Wireless communication method, terminal device and network device

Abstract

Provided are a wireless communication method, a terminal device and a network device. The method comprises: if a first event is satisfied, a terminal device executing a preset behavior, wherein the first event is related to a low-layer triggered mobility (LTM) handover or is related to the LTM handover and a radio link failure event predicted by the terminal device, and the preset behavior is related to the LTM handover.

Description

Wireless communication methods, terminal devices, and network devices Technical Field

[0001] This application relates to the field of communication technology, and more specifically, to a wireless communication method, terminal device, and network device. Background Technology

[0002] When a terminal device triggers a radio link failure (RLF) event, many communication processes will be affected. For example, RLF will impact lower layer triggered mobility (LTM) handover mechanisms. For instance, if a terminal device triggers an RLF in the serving cell, it will initiate a re-establishment process. On one hand, the RLF-triggered re-establishment process causes a period of data interruption for the terminal device, reducing user throughput and experience; on the other hand, the RLF-triggered re-establishment process may cause the terminal device to discard its stored LTM candidate cell configurations before they are used, wasting network device configuration resources.

[0003] Summary of the Invention

[0004] This application provides a wireless communication method, a terminal device, and a network device. The various aspects covered by this application are described below.

[0005] In a first aspect, a wireless communication method is provided, the method comprising: if a first event is satisfied, a terminal device performs a preset behavior; wherein the first event is related to LTM handover or the first event is related to LTM handover and a wireless link failure event predicted by the terminal device, and the preset behavior is related to LTM handover.

[0006] In a second aspect, a wireless communication method is provided, the method comprising: a network device sending configuration information to a terminal device, the configuration information being related to a first event and / or a preset behavior; wherein the first event is related to LTM handover or the first event is related to LTM handover and a wireless link failure event predicted by the terminal device, and the preset behavior is related to LTM handover.

[0007] Thirdly, a terminal device is provided, comprising: an execution module, configured to execute a preset behavior if a first event is satisfied; wherein the first event is related to a low-layer triggered mobility LTM handover or the first event is related to LTM handover and a radio link failure event predicted by the terminal device, and the preset behavior is related to LTM handover.

[0008] Fourthly, a network device is provided, comprising: a transmitting unit for transmitting configuration information to a terminal device, the configuration information being related to a first event and / or a preset behavior; wherein the first event is related to LTM handover or the first event is related to LTM handover and a radio link failure event predicted by the terminal device, and the preset behavior is related to LTM handover.

[0009] Fifthly, a terminal device is provided, including a transceiver, a memory, and a processor, wherein the memory is used to store a program, the processor is used to invoke the program in the memory, and to control the transceiver to receive or send signals so that the terminal device performs some or all of the steps in the method of the first aspect.

[0010] In a sixth aspect, a network device is provided, including a transceiver, a memory, and a processor, wherein the memory is used to store a program, the processor is used to invoke the program in the memory, and to control the transceiver to receive or transmit signals so that the network device performs some or all of the steps in the method of the second aspect.

[0011] Seventhly, an example provides a communication system that includes the aforementioned terminal device and / or network device. In another possible design, the system may further include other devices that interact with the terminal device or network device as described in the embodiments of this application.

[0012] Eighthly, a computer-readable storage medium is provided, the computer-readable storage medium storing a computer program that causes a terminal device and / or a network device to perform some or all of the steps in the methods of the above aspects.

[0013] Ninthly, embodiments of this application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program operable to cause a terminal device and / or a network device to perform some or all of the steps of the methods described in the foregoing aspects. In some implementations, the computer program product may be a software installation package.

[0014] In a tenth aspect, embodiments of this application provide a chip including a memory and a processor, the processor being able to call and run a computer program from the memory to implement some or all of the steps described in the methods of the foregoing aspects.

[0015] In this application, the terminal device can execute preset actions based on a first event related to a predicted radio link failure event. This allows for more reasonable actions to be performed before the predicted radio link failure event occurs, reducing the probability of the event and even preventing it from happening, thereby mitigating the adverse effects of the failure. Alternatively, the terminal device can execute preset actions based on a first event related to LTM handover. This allows for more reasonable actions to be performed before the LTM candidate cell configuration is discarded, reducing the probability of discarding the configuration and thus reducing or avoiding waste of configuration resources. Furthermore, the predicted actions can be related to LTM handover. Therefore, the terminal device can optimize LTM handover behavior based on the first event, thereby avoiding or reducing data interruption duration, improving user throughput and experience, and reducing or avoiding waste of network device configuration resources. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the wireless communication system used in the embodiments of this application.

[0017] Figure 2 is a schematic flowchart of a wireless communication method provided in an embodiment of this application.

[0018] Figure 3 is a schematic flowchart of another wireless communication method provided in an embodiment of this application.

[0019] Figure 4 is a schematic structural diagram of a terminal device provided in an embodiment of this application.

[0020] Figure 5 is a schematic structural diagram of a network device provided in an embodiment of this application.

[0021] Figure 6 is a schematic structural diagram of a communication device provided in an embodiment of this application. Detailed Implementation

[0022] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0023] Communication system

[0024] Figure 1 illustrates a wireless communication system 100 according to an embodiment of this application. The wireless communication system 100 may include communication devices. These communication devices may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120.

[0025] Figure 1 illustrates an exemplary network device and two terminals. Optionally, the wireless communication system 100 may include multiple network devices, and each network device may include other terminal devices within its coverage area. This application embodiment does not limit this.

[0026] Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment.

[0027] It should be understood that the technical solutions of the embodiments of this application can be applied to various communication systems, such as: 5th generation (5G) systems or new radio (NR), long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, etc. The technical solutions provided in this application can also be applied to future communication systems, such as 6th generation mobile communication systems, satellite communication systems, and so on.

[0028] The terminal device in this application embodiment can also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The terminal device in this application embodiment can be a device that provides voice and / or data connectivity to a user, and can be used to connect people, objects, and machines, such as a handheld device with wireless connectivity, vehicle-mounted device, etc. The terminal device in the embodiments of this application can be a mobile phone, tablet computer, laptop computer, PDA, mobile internet device (MID), wearable device, virtual reality (VR) device, augmented reality (AR) device, wireless terminal in industrial control, wireless terminal in self-driving, wireless terminal in remote medical surgery, wireless terminal in smart grid, wireless terminal in transportation safety, wireless terminal in smart city, wireless terminal in smart home, etc. Optionally, the UE can be used to act as a base station. For example, the UE can act as a scheduling entity, providing sidelink signals between UEs in vehicle-to-everything (V2X) or device-to-device (D2D) communication. For example, cellular phones and cars communicate with each other using sidelink signals. Cellular phones and smart home devices communicate without relaying communication signals through a base station.

[0029] The network device in this application embodiment can be a device for communicating with terminal devices. The network device may also include an access network device. The access network device can provide communication coverage for a specific geographical area and can communicate with the terminal device 120 located within that coverage area. The access network device can also be called a wireless access network device or a base station, etc. In this application embodiment, the access network device can refer to a radio access network (RAN) node (or device) that connects the terminal device to the wireless network. Access network equipment can broadly encompass various names listed below, or be replaced by names such as: NodeB, Evolved NodeB (eNB), Next Generation NodeB (gNB), Relay Station, Transmitting and Receiving Point (TRP), Transmitting Point (TP), Master eNB (MeNB), Secondary eNB (SeNB), Multi-Standard Radio (MSR) Node, Home Base Station, Network Controller, Access Node, Wireless Node, Access Point (AP), Transmitter Node, Transceiver Node, Baseband Unit (BBU), Remote Radio Unit (RRU), Active Antenna Unit (AAU), Remote Radio Head (RRH), Central Unit (CU), Distributed Unit (DU), Location Node, Centralized Unit-Control Plane (CU-CP), Centralized Unit-User Plane (CU-User) Base stations can be macro base stations, micro base stations, relay nodes, donor nodes, or similar entities, or combinations thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. A base station can also be a mobile switching center, equipment performing base station functions in D2D, V2X, and machine-to-machine (M2M) communications, network-side equipment in 6G networks, and equipment performing base station functions in future communication systems. Base stations can support networks using the same or different access technologies. The embodiments of this application do not limit the specific technologies or equipment forms used in the access network equipment.

[0030] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.

[0031] Wireless communication systems involve communication equipment that can include not only access network equipment and terminal equipment, but also core network elements. Core network elements can be implemented through devices; that is, core network elements are core network devices. It can be understood that core network devices can also be a type of network device.

[0032] The core network elements in this application embodiment may include network elements that process and forward user signaling and data. For example, core network equipment may include core access and mobility management function (AMF), session management function (SMF), location management function (LMF), network slice selection function (NSSF), authentication server function (AUSF), unified data management (UDM), policy control function (PCF), user plane function (UPF), sensing function (SF), network data analytics function (NWDAF), and artificial intelligence (AI) function management entity, etc. Of course, the core network may also include other network elements, which are not listed here.

[0033] In some deployments, the network device in this application embodiment may refer to a CU or a DU, or the network device may include both a CU and a DU. The gNB may also include an AAU.

[0034] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located.

[0035] It should be understood that all or part of the functions of the communication device in this application can also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (e.g., a cloud platform).

[0036] LTM switching mechanism

[0037] To achieve rapid and continuous handover, related technologies (such as 3GPP NR R18) have introduced a Layer 1 / Layer 2 triggered handover mechanism, namely the LTM handover mechanism. The basic process of the LTM handover mechanism is illustrated below.

[0038] The LTM switching process may include steps 1 through 5.

[0039] Step 1: The network device configures one or more LTM candidate cell configurations for the terminal device via radio resource control (RRC) messages. Each LTM candidate cell configuration includes configurations for one or more reference beams, as well as other configurations.

[0040] Step 2: After successfully receiving configuration information for one or more LTM candidate cells, the terminal device measures one or more reference beams associated with the LTM candidate cells and reports the beam measurement results obtained during the measurement process to the current serving cell through uplink control information (UCI).

[0041] Step 3: The serving cell of the terminal device decides whether to perform an LTM handover based on the beam measurement results reported by the terminal device and the local policy. If it is determined to perform an LTM handover, the serving cell sends the relevant information of the target cell to the terminal device through the media access control element (MAC CE).

[0042] Step 4: After successfully receiving the MAC CE information sent by the serving cell to trigger LTM handover, the terminal device initiates the handover process to the target cell according to the information indicated by the MAC CE.

[0043] Step 5: After successfully accessing the target cell for handover, if the LTM configuration stored in the terminal device is still valid, the terminal device continues to perform measurements on one or more reference beams associated with the LTM candidate cell and reports the beam measurement results obtained during the measurement process to the current serving cell via UCI. Subsequent actions are the same as in steps 3 and 4, and will not be repeated here. This process continues until the LTM configuration stored in the terminal device becomes invalid or the network device actively releases the LTM configuration stored in the terminal device, at which point the LTM handover process terminates.

[0044] LTM-based conditional handover (CHO)

[0045] To improve the robustness of the handover process, some communication systems (such as NR systems) have introduced a conditional handover mechanism, namely the CHO mechanism. Of course, if the CHO mechanism is applied to dual connectivity (DC) scenarios, it includes conditional primary / secondary cell addition (CPA), conditional primary / secondary cell change (CPC), and subsequent conditional primary / secondary cell addition / change (SCPAC). This application does not limit the specific scenario to which the CHO mechanism applies; that is, it can be applied to both DC and non-DC scenarios.

[0046] To enable conditional handover, network devices can configure one or more candidate cells (or one or more conditional handover cells, or one or more conditional handover candidate cells) for terminal devices. The configuration of these candidate cells can include the cell configuration associated with each candidate cell and the handover conditions associated with each candidate cell. The terminal device can determine whether a candidate cell meets the handover conditions and initiate a handover procedure to a candidate cell that meets the handover conditions.

[0047] Typical handover conditions include the following events: the cell-level measurement result of the neighboring cell is higher than the cell-level measurement result of the serving cell by an offset; or, the cell-level measurement result of the neighboring cell is greater than an absolute threshold; or, the cell-level measurement result of the neighboring cell is greater than an absolute threshold and the cell-level measurement result of the serving cell is less than another absolute threshold. Handover conditions can also be related to the time-to-trigger (TTT) duration. For example, when at least one cell satisfies an event, and the duration corresponding to the satisfied state of the event is equal to the TTT duration associated with the event, the terminal device triggers the action of accessing a candidate cell that meets the conditions.

[0048] In conditional handover, the terminal device can directly initiate a handover procedure to a cell that meets the handover conditions without waiting for a handover command from the network device; that is, the terminal device can determine the target cell itself. Therefore, under conditional handover, even if the channel quality of the serving cell deteriorates sharply (e.g., in high-speed mobile scenarios), the handover will not fail due to the failure of the handover command transmission.

[0049] For LTM technology, the aforementioned conditional handover mechanism can also be applied to achieve LTM-based conditional handover (i.e., conditional LTM handover). In LTM-based conditional handover scenarios, LTM candidate cells can be conditional handover cells. This application refers to the LTM candidate cells in conditional LTM handover as conditional LTM candidate cells; however, these cells can also be referred to by other names. Network devices can configure the handover conditions of conditional LTM candidate cells to terminal devices. Terminal devices can independently determine whether conditional LTM candidate cells meet the corresponding handover conditions. When at least one conditional LTM candidate cell meets the corresponding handover condition, the terminal device can initiate a handover procedure to the conditional LTM candidate cell that meets the handover condition.

[0050] As one possible implementation, the network device can configure one or more conditional LTM candidate cells for the terminal device. This configuration may include cell configurations associated with the conditional LTM candidate cells and handover conditions associated with them. For example, handover conditions may include the following events: the cell-level measurement result of the conditional LTM candidate cell is higher than the cell-level measurement result of the serving cell by an offset; or, the beam-level measurement result corresponding to the best beam of the conditional LTM candidate cell is higher than the beam-level measurement result corresponding to the best beam of the serving cell by an offset; or, the beam-level measurement result corresponding to the best beam of the conditional LTM candidate cell is higher than the beam-level measurement result corresponding to the currently best serving beam of the terminal device by an offset; or, the cell-level measurement result of the conditional LTM candidate cell is greater than an absolute threshold; or, the conditional LTM candidate cell's... The handover condition is determined by the following conditions: The beam-level measurement result corresponding to the best beam is greater than an absolute threshold; or, the cell-level measurement result of the conditional LTM candidate cell is greater than an absolute threshold and the cell-level measurement result of the serving cell is less than another absolute threshold; or, the beam-level measurement result corresponding to the best beam of the conditional LTM candidate cell is greater than an absolute threshold and the beam-level measurement result corresponding to the best beam of the serving cell is less than another absolute threshold; or, the beam-level measurement result corresponding to the best beam of the conditional LTM candidate cell is greater than an absolute threshold and the beam-level measurement result corresponding to the current best serving beam of the terminal device is less than another absolute threshold. The handover condition can also be related to the TTT duration. For example, when at least one conditional LTM candidate cell satisfies an event, and the duration of waiting for the event to be satisfied is equal to the TTT duration associated with that event, the handover condition is satisfied, and the terminal device triggers the action of accessing the conditional LTM candidate cell that satisfies the condition.

[0051] It should be noted that the LTM candidate cells in this application may include: conditional LTM candidate cells (i.e., handover behavior is triggered by the terminal device itself), and / or, LTM candidate cells in the unconditional handover process (i.e., handover behavior is triggered by the handover command of the network device).

[0052] Reconstruction mechanism involving LTM technology

[0053] Reconstruction scenarios involving LTM technology can include scenario 1 and scenario 2.

[0054] Scenario 1: After successfully receiving configurations for one or more LTM candidate cells, the terminal device needs to wait for a specific MAC CE triggered by the network device or determine that at least one conditional LTM candidate cell meets the handover conditions before it can perform a cell handover based on LTM technology. Alternatively, after successfully receiving configurations for one or more conditional LTM candidate cells, the terminal device waits for at least one conditional LTM candidate cell to meet the handover conditions before performing a conditional LTM handover. If an RLF occurs in the serving cell during the above waiting process, the terminal device will trigger a reconstruction.

[0055] Scenario 2: If the network device sends MAC CE information to the terminal device to trigger LTM handover, and the terminal device successfully receives the MAC CE information, it triggers the LTM handover process. However, if the terminal device fails to successfully access the LTM candidate cell indicated by the MAC CE before the handover timer T304 expires, the terminal device will trigger a rebuild. Alternatively, if the terminal device determines that at least one conditional LTM candidate cell meets the handover conditions, but fails to successfully access the conditional LTM candidate cell that meets the handover conditions before the handover timer T304 expires, the terminal device will trigger a rebuild.

[0056] Reconstruction behaviors involving LTM technology can be divided into two categories: Category 1 and Category 2 behaviors.

[0057] The first type of behavior: If the network device allows the terminal device to reconsider LTM candidate cells during the reconstruction process during the configuration process, then after the reconstruction is triggered by one of the above two scenarios, the terminal device selects a cell based on the cell selection process. If the cell belongs to one or more LTM candidate cell configurations stored by the terminal device, the terminal device can initiate a handover process based on LTM technology to the cell; otherwise, if the cell does not belong to one or more LTM candidate cell configurations stored by the terminal device, the terminal device will normally initiate a reconstruction process in the cell.

[0058] The second type of behavior: If the network device does not allow the terminal device to reconsider LTM candidate cells during the reconstruction process during the configuration process, then after the reconstruction is triggered by one of the above two scenarios, the terminal device selects a cell based on the cell selection process, regardless of whether the cell belongs to one or more LTM candidate cell configurations stored by the terminal device, and the terminal device initiates the reconstruction process normally in that cell.

[0059] As described above, in the LTM handover mechanism, the terminal device always passively waits for a relevant event (such as an RLF event) to occur before executing subsequent actions. For example, after successfully receiving one or more LTM candidate cell configurations, the terminal device needs to wait for a specific MAC CE triggered by the network device before it can perform LTM-based cell handover. If an RLF occurs in the serving cell while waiting for the handover command, the terminal device will trigger a reconstruction. Similarly, after successfully receiving one or more conditional LTM candidate cell configurations, the terminal device needs to wait for it to determine that a conditional LTM candidate cell meets the handover conditions before it can perform conditional LTM handover. If an RLF is triggered in the serving cell while waiting for the handover conditions to be met, the terminal device will trigger a re-establishment. The cost of these actions is twofold: firstly, the reconstruction process triggered by an RLF will cause a period of data interruption for the terminal device, reducing user throughput and experience; secondly, the LTM candidate cell configurations stored by the terminal device may be discarded before they are used, wasting the network device's configuration resources.

[0060] Figure 2 is a schematic flowchart of a wireless communication method provided in an embodiment of this application. The method shown in Figure 2 can be executed by a terminal device.

[0061] The method shown in Figure 2 may include step S210.

[0062] Step S210: If the first event is satisfied, the terminal device executes a preset action. The first event is related to LTM handover, or the first event is related to a radio link failure event predicted by the terminal device, or the first event is related to both LTM handover and a radio link failure event predicted by the terminal device. The preset action is related to LTM handover, or the preset event is related to a radio link failure event predicted by the terminal device.

[0063] Terminal devices can predict wireless link failure events. This means predicting future wireless link failure events. For example, at a specific historical moment or at the present moment, the terminal device can predict how long after that moment a wireless link event will occur.

[0064] This application does not limit the method by which a terminal device predicts wireless link failure events. For example, a terminal device can predict wireless link failure events using an AI model.

[0065] It should be noted that the LTM switching in this application can be the conditional LTM switching described above, or other types of switching based on LTM (such as unconditional LTM switching).

[0066] In this application, the terminal device can execute preset actions based on a first event related to a predicted radio link failure event. This allows for more reasonable actions to be performed before the predicted radio link failure event occurs, reducing the probability of the event and even preventing it from happening, thereby mitigating the adverse effects of the failure. Alternatively, the terminal device can execute preset actions based on a first event related to LTM handover. This allows for more reasonable actions to be performed before the LTM candidate cell configuration is discarded, reducing the probability of discarding the configuration and thus reducing or avoiding waste of configuration resources. Furthermore, the predicted actions can be related to LTM handover. Therefore, the terminal device can optimize LTM handover behavior based on the first event, thereby avoiding or reducing data interruption duration, improving user throughput and experience, and reducing or avoiding waste of network device configuration resources.

[0067] Figure 3 is a schematic flowchart of another wireless communication method provided in an embodiment of this application. The method shown in Figure 3 can be executed by a terminal device and a network device. The network device may include the access network device described above.

[0068] The method shown in Figure 3 may include step S310.

[0069] In step S310, the terminal device receives configuration information sent by the network device, and correspondingly, the network device sends configuration information to the terminal device. The configuration information may be related to a first event and / or a preset behavior. For example, the configuration information may be used to configure parameters related to the first event and / or the preset behavior. The configuration information will be described in detail below in conjunction with different scenarios.

[0070] Alternatively, configuration information can be transmitted via dedicated signaling or system broadcast messages.

[0071] It should be noted that some or all of the parameters included in the configuration information in the embodiments of this application can be determined in other embodiments through predefined methods. For example, one or more of the first to twenty-first parameters described below can be determined through predefined methods.

[0072] In some embodiments, the terminal device may send capability information to the network device. The capability information may be used to indicate the terminal device's capabilities related to a first event and / or a preset behavior. The capability information will be explained in conjunction with different scenarios below.

[0073] It should be noted that, in some embodiments, the aforementioned capability information may be reported by the terminal device to the current serving cell. In some embodiments, the aforementioned capability information may be reported by the terminal device to the serving cell where the terminal device is located during the registration process, and then reported by the serving cell to the core network. Subsequently, the core network may provide the aforementioned capability information to the terminal device's current serving cell.

[0074] It should be noted that the current serving cell of the terminal device can send the configuration information mentioned above to the terminal device based on the capability information reported by the terminal device or the capability information indicated by the core network.

[0075] It should be noted that the network device receiving the capability information and the network device sending the configuration information are the same network device. In some embodiments, the network device receiving the capability information and the network device sending the configuration information are different network devices. This application does not limit this.

[0076] For ease of understanding, the first event and preset behavior will be explained in detail below through Examples 1 to 3.

[0077] Example 1

[0078] Example 1 can be applied to Scenario 1. Scenario 1 addresses a conditional LTM handover scenario. In Example 1, the first event is related to conditional LTM handover and a radio link failure event predicted by the terminal device. The preset behavior is related to conditional LTM handover.

[0079] In Example 1, during conditional LTM handover, the terminal device can predict the impending radio link failure event before it actually occurs. On one hand, this technical solution can largely prevent actual radio link failures, thereby avoiding data interruptions and improving user throughput. On the other hand, if a radio link failure event is predicted, the terminal device can perform conditional LTM handover (i.e., perform conditional LTM handover in advance) even if no conditional LTM candidate cell meets the handover conditions, thus avoiding the discarding of stored LTM handover configurations and improving the utilization efficiency of network device configuration resources.

[0080] The first event in Example 1 will be described in detail below.

[0081] The first event in Example 1

[0082] In Example 1, the first event may include event 1 or event 2. These will be described separately below.

[0083] Event 1 includes: at a first moment, the terminal device predicts that at a second moment after a first duration, the terminal device will trigger a radio link failure in the serving cell, and at the first moment, the terminal device predicts that within the first duration, the handover conditions associated with any one or more conditional LTM candidate cells will not be met. Here, the first moment refers to the current moment of the terminal device.

[0084] In some embodiments, the second moment can be the moment when the terminal device predicts the RLF event will trigger. In other words, the terminal device predicts that it will trigger the RLF event in the serving cell at the second moment, or the terminal device predicts that the probability or confidence level of triggering the RLF event in the serving cell at the second moment is greater than a threshold, such as a threshold of 90%.

[0085] It should be noted that, in this application, one or more conditional LTM candidate cells can be conditional LTM candidate cells configured by the network device for the terminal device.

[0086] In some embodiments, the first duration can be used to indicate the duration for which the terminal device predicts a wireless link failure event. Exemplarily, the first duration can be used to indicate the maximum duration for which the terminal device predicts a wireless link failure event, such as the maximum prediction duration for the terminal device to perform wireless link failure event prediction based on AI technology. In other words, the first duration can be used to indicate the maximum time the terminal device can predict before a wireless link failure event will occur.

[0087] In some embodiments, the first duration can be used to indicate the duration for the terminal device to predict whether the handover conditions associated with any conditional LTM candidate cell are met. For example, the first duration can be used to indicate the maximum duration for the terminal device to predict whether the handover conditions associated with any conditional LTM candidate cell are met, such as the maximum prediction duration for the terminal device to perform the prediction behavior based on AI technology. In other words, the first duration can be used to indicate the maximum time the terminal device can predict after which any conditional LTM candidate cell will meet the handover conditions associated with that conditional LTM candidate cell.

[0088] It should be noted that the first duration can satisfy one or more of the following: predefined, preconfigured, or configured by the network device.

[0089] Based on Event 1, if the terminal device predicts that it will trigger a radio link failure in the serving cell in the future, and the terminal device predicts that before the radio link failure occurs, the handover conditions associated with all conditional LTM candidate cells will not be met (i.e., according to relevant technologies, the terminal device will not initiate a handover process), the terminal device can execute a preset behavior.

[0090] Event 2 includes: at the first moment, the terminal device predicts that the time interval between the fourth moment and the third moment is less than or equal to the second duration, wherein the third moment is the earliest moment when the handover condition associated with at least one of the one or more conditional LTM candidate cells predicted by the terminal device is met. The fourth moment is the moment when the terminal device predicts that the terminal device will trigger a radio link failure in the serving cell.

[0091] It should be noted that the second duration can satisfy one or more of the following: predefined, preconfigured, or configured by the network device.

[0092] It should be noted that the terminal device can predict in the first moment that it will trigger a radio link failure in the serving cell in the fourth moment, and predict the third moment in the first moment or earlier, thus determining the time interval between the fourth and third moments in the first moment. Alternatively, the terminal device can predict in the first moment that it will trigger a radio link failure in the serving cell in the fourth moment, and predict the third moment in the first moment, thus predicting the time interval between the third and fourth moments in the first moment. The second or fourth moment is the earliest moment predicted by the terminal device that it will trigger a radio link failure in the serving cell.

[0093] It should be noted that this application does not restrict the order of the third and fourth moments. The third moment may be earlier than the fourth moment, or the fourth moment may be earlier than the third moment, or the third and fourth moments may coincide.

[0094] Based on Event 2, if the time interval between the predicted moment when the terminal device triggers a radio link failure event in the serving cell and the earliest moment when the handover condition associated with at least one predicted conditional LTM candidate cell is satisfied is less than or equal to the second duration, the terminal device can perform a preset behavior.

[0095] The predictions made by the terminal device may contain prediction errors. For example, the predicted time when the terminal device triggers a radio link failure event in the serving cell may be incorrect (i.e., earlier or later than the actual occurrence time), and / or the predicted earliest time when the handover conditions associated with at least one conditional LTM candidate cell are met may be incorrect (i.e., earlier or later than the actual fulfillment time). This prediction error may result in the following: although the predicted (earliest) time when the terminal device triggers a radio link failure event in the serving cell is after the predicted earliest time when the handover conditions associated with at least one conditional LTM candidate cell are met, the actual time when the radio link failure event occurs in the future may be before the predicted earliest time when the handover conditions associated with at least one conditional LTM candidate cell are met. Event 2 of this application can perform a preset behavior when the interval between the third and fourth times is small, thereby avoiding the terminal device triggering a radio link failure event before the handover conditions associated with at least one conditional LTM candidate cell are met.

[0096] In Embodiment 1, the configuration information may include first configuration information. That is, the network device may send the first configuration information to the terminal device.

[0097] The first configuration information is related to the first event. For example, the first configuration information can be used to configure event 1 or event 2. That is, the defined configuration information can be used to configure parameters related to the first event in embodiment 1.

[0098] For example, the first configuration information may include a first parameter and / or a second parameter. Exemplarily, the first configuration information includes: a first parameter; or, a second parameter; or, both a first parameter and a second parameter.

[0099] The first parameter is used to indicate the value of the first duration. Optionally, if the first event includes event 1, the first configuration information may include the first parameter.

[0100] The second parameter is used to indicate the value of the second duration. Optionally, if the first event includes event 2, the first configuration information may include the second parameter. Optionally, if the first event includes event 2, the first configuration information may include both the first parameter and the second parameter.

[0101] Preset behavior in Example 1

[0102] In Example 1, the preset behavior may include the terminal device selecting a cell from the conditional LTM candidate cells to initiate a handover process.

[0103] To facilitate the explanation of the preset behavior, the following sections will explain when the terminal device initiates the handover process and how the terminal device selects the cell to initiate the handover process.

[0104] When the terminal device initiates the handover process

[0105] The handover procedure can be initiated by the terminal device at a time before the predicted time when the terminal device will trigger a radio link failure event in the serving cell. In other words, the terminal device can initiate the handover procedure before the predicted time when the terminal device will trigger a radio link failure event in the serving cell, thereby avoiding the actual triggering of a radio link failure event.

[0106] It should be noted that, in this application, the predicted time when the terminal device triggers a radio link failure event in the serving cell may include the second or fourth time mentioned above.

[0107] It is understandable that at the moment the handover procedure is initiated, it is highly probable that all conditional LTM candidate cells will not meet the handover conditions. In other words, the terminal device can initiate the handover procedure before the handover conditions associated with any one of the conditional LTM candidate cells are met, which means initiating the conditional LTM handover procedure in advance.

[0108] As one possible implementation, the terminal device can initiate the handover process at the very first moment. In other words, if the first event is met, the terminal device can immediately initiate the handover process. Triggering LTM handover upon the first event being met is simple for the terminal device to implement.

[0109] As another possible implementation, the handover procedure can be initiated by the terminal device at any time between the first time and the predicted time when the terminal device triggers a radio link failure event in the serving cell (which may include the first time). In other words, the terminal device can initiate the handover procedure at any time between the first time and the predicted time when the terminal device triggers a radio link failure event in the serving cell (which may include the first time). For example, the terminal device can initiate the handover procedure at the seventh time. The seventh time can be any time between the first time and the predicted time when the terminal device triggers a radio link failure event in the serving cell. The seventh time can be equal to or later than the first time. Optionally, the terminal device can choose a time to initiate the handover procedure, depending on its implementation. Triggering LTM handover at any time allows for greater flexibility for the terminal device.

[0110] As another possible implementation, the timing of the handover procedure initiated by the terminal device can be calculated based on the first timeframe. For example, the terminal device can initiate the handover procedure at the fifth timeframe. Here, the time interval between the fifth timeframe and the first timeframe is the third duration. It is understandable that after the first event is satisfied, the terminal device can wait for the third duration before initiating the handover procedure. Generally, waiting a period after the first event is satisfied before triggering the LTM handover judgment can improve the measurement results of the conditional LTM candidate cells; therefore, initiating the handover procedure at the fifth timeframe can increase the probability of a successful handover.

[0111] It should be noted that the third duration can satisfy one or more of the following: predefined, preconfigured, or configured by the network device.

[0112] As another possible implementation, the timing of the handover procedure initiated by the terminal device can be calculated based on the predicted time when the terminal device triggers a radio link failure event in the serving cell. For example, the terminal device can initiate the handover procedure at the sixth time. Here, the time interval between the sixth time and the predicted time when the terminal device triggers a radio link failure event in the serving cell is the fourth duration. It is understandable that after the first time, the terminal device can wait for a period of time before initiating the handover procedure at the sixth time. Generally, waiting for a period of time after the first event is satisfied before triggering the LTM handover judgment can improve the measurement results of the conditional LTM candidate cells; therefore, initiating the handover procedure at the sixth time can increase the probability of a successful handover.

[0113] It should be noted that the fourth duration can satisfy one or more of the following: predefined, preconfigured, or configured by the network device.

[0114] For ease of understanding and comparison, Table 1 shows the various moments that may be relevant to Example 1.

[0115] Table 1

[0116] It should be noted that some of the contents in Table 1 can be implemented independently. For example, Example 1 may only be related to the first and second time points, and not to other time points. Similarly, Example 1 may only be related to the first, fourth, and fifth time points, and not to other time points.

[0117] As another possible implementation, the terminal device can initiate the handover process at the moment when preset conditions are met. These preset conditions may include, for example, a first condition, a third condition, or a fourth condition. That is, if the first, third, or fourth condition is met, the terminal device can immediately initiate the handover process. It should be noted that the moment the preset conditions are met can be the first instant or a time after the first instant.

[0118] The first condition may include conditions related to the measurement results of the conditional LTM candidate cells. In other words, the timing for initiating the handover procedure can be determined based on the measurement results of the conditional LTM candidate cells. The third condition may include conditions related to the measurement results of the serving cell. In other words, the timing for initiating the handover procedure can be determined based on the measurement results of the serving cell. The fourth condition may include conditions related to both the measurement results of the conditional LTM candidate cells and the measurement results of the serving cell. In other words, the timing for initiating the handover procedure can be determined based on both the measurement results of the conditional LTM candidate cells and the measurement results of the serving cell.

[0119] It should be noted that the measurement results in this application may include beam-level measurement results and / or cell-level measurement results. For example, the measurement results of LTM candidate cells (including conditional LTM candidate cells) may include cell-level measurement results and / or beam measurement results of the LTM candidate cells. The measurement results of the serving cell may include cell-level measurement results and / or beam measurement results of the serving cell. The measurement results in this application may include measurement results obtained from the prediction process and / or measurement results obtained from the actual measurement process. For example, the measurement results of LTM candidate cells (including conditional LTM candidate cells) may include measurement results of LTM candidate cells obtained from the prediction process and / or measurement results of LTM candidate cells obtained from the actual measurement process. The measurement results of the serving cell may include measurement results of the serving cell obtained from the prediction process and / or measurement results of the serving cell obtained from the actual measurement process.

[0120] It should be noted that the measurement results may include one or more of the following: reference signal received power (RSRP), reference signal received quality (RSRQ), and signal to interference plus noise ratio (SINR).

[0121] For ease of understanding and comparison, Table 2 shows the various conditions that may be related to Example 1.

[0122] Table 2

[0123] It should be noted that some of the contents in Table 2 can be implemented independently. For example, Example 1 may only be related to the first condition and not to the other conditions. Similarly, Example 1 may only be related to the first and third conditions and not to the other conditions.

[0124] Examples of the first, second, third, and fourth conditions are given below.

[0125] The first condition may include, for example, the cell-level measurement results and / or beam-level measurement results corresponding to the conditional LTM candidate cell satisfying the event type indicated in its associated handover condition, but the duration corresponding to the state where the cell-level measurement results and / or beam-level measurement results corresponding to the conditional LTM candidate cell satisfying the event type indicated in its associated handover condition up to the current time is less than a first duration threshold; or, the beam measurement result corresponding to the best beam of the conditional LTM candidate cell is greater than the first threshold; or, the cell-level measurement result corresponding to the conditional LTM candidate cell is greater than a second threshold. Wherein, the first duration threshold, the first threshold, or the second threshold are positive numbers. Please refer to the preceding text for the event types indicated in the handover condition; they will not be repeated here.

[0126] It should be noted that the first duration threshold, the first threshold, or the second threshold can satisfy one or more of the following: predefined, preconfigured, or configured by the network device.

[0127] The terminal device initiates the handover process when the first condition is met. This can be done when the measurement results of the conditional LTM candidate cell are good, thereby improving the handover success rate.

[0128] The first duration threshold could be, for example, the TTT duration associated with the event type. That is, the first condition could include: the cell-level measurement results and / or beam-level measurement results corresponding to the conditional LTM candidate cell satisfy the event type indicated in its associated handover conditions, but the duration corresponding to the state where the cell-level measurement results and / or beam-level measurement results corresponding to the conditional LTM candidate cell satisfy the event type indicated in its associated handover conditions, up to the current time, is less than the TTT duration requirement associated with the event type.

[0129] The second condition may include, for example, the best beam measurement result of the conditional LTM candidate cell being the best among all the beam measurement results of the conditional LTM candidate cells, or the cell-level measurement result of the conditional LTM candidate cell being the best among all the cell-level measurement results of the conditional LTM candidate cells.

[0130] The third condition may include, for example: the beam measurement result of the terminal device's current serving beam is less than or equal to a third threshold; or the beam measurement result corresponding to the best beam of the terminal device's current serving cell is less than or equal to a fourth threshold; or the cell-level measurement result of the terminal device's current serving cell is less than or equal to a fifth threshold. The third, fourth, or fifth thresholds are positive numbers. It should be noted that if the terminal device has more than one serving beam, the current serving beam can be the terminal device's current best serving beam. The best beam of the current serving cell may or may not be the terminal device's serving beam, depending on the instructions of the beam management process controlled by the network device.

[0131] It should be noted that the third, fourth, or fifth threshold can satisfy one or more of the following: predefined, preconfigured, or configured by the network device.

[0132] When the third condition is met, the terminal device initiates the handover process. This can be done when the measurement results of the serving cell are poor, thus avoiding premature handover caused by initiating the handover when the measurement results of the serving cell are good.

[0133] The fourth condition may include, for example, any one of the fourth conditions 1 to 15.

[0134] Fourth condition 1: The cell-level measurement results and / or beam-level measurement results corresponding to the condition LTM candidate cell meet the event type indicated in its associated handover conditions, but the duration of the state corresponding to the cell-level measurement results and / or beam-level measurement results corresponding to the condition LTM candidate cell meeting the event type indicated in its associated handover conditions up to the current time is less than the first duration threshold, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the third threshold.

[0135] Fourth condition 2: The cell-level measurement results and / or beam-level measurement results corresponding to the condition LTM candidate cell meet the event type indicated in its associated handover condition, but the duration of the state corresponding to the cell-level measurement results and / or beam-level measurement results corresponding to the condition LTM candidate cell meeting the event type indicated in its associated handover condition up to the current time is less than the first duration threshold, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fourth threshold.

[0136] Fourth condition 3: The cell-level measurement results and / or beam-level measurement results corresponding to the condition LTM candidate cell meet the event type indicated in its associated handover conditions, but the duration of the state corresponding to the cell-level measurement results and / or beam-level measurement results corresponding to the condition LTM candidate cell meeting the event type indicated in its associated handover conditions up to the current time is less than the first duration threshold, and the cell-level measurement results of the current serving cell of the terminal device are less than or equal to the fifth threshold.

[0137] Fourth condition 4: The beam measurement result corresponding to the best beam of the condition LTM candidate cell is greater than the first threshold, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the third threshold.

[0138] Fourth condition 5: The beam measurement result corresponding to the best beam of the condition LTM candidate cell is greater than the first threshold, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fourth threshold.

[0139] Fourth condition 6: The beam measurement result corresponding to the best beam of the condition LTM candidate cell is greater than the first threshold, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the fifth threshold.

[0140] Fourth condition 7: The beam measurement result corresponding to the best beam of the conditional LTM candidate cell is the best among all the beam measurement results corresponding to the conditional LTM candidate cells, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the third threshold; or

[0141] Fourth condition 8: The beam measurement result corresponding to the best beam of the conditional LTM candidate cell is the best among all the beam measurement results corresponding to the conditional LTM candidate cells, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fourth threshold.

[0142] Fourth condition 9: The beam measurement result corresponding to the best beam of the conditional LTM candidate cell is the best among all the beam measurement results corresponding to the conditional LTM candidate cells, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the fifth threshold; or

[0143] Fourth condition 10: The cell-level measurement result corresponding to the LTM candidate cell is greater than the second threshold, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the third threshold.

[0144] Fourth condition 11: The cell-level measurement result corresponding to the LTM candidate cell is greater than the second threshold, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fourth threshold.

[0145] Fourth condition 12: The cell-level measurement result corresponding to the LTM candidate cell is greater than the second threshold, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the fifth threshold.

[0146] Fourth condition 13: The cell-level measurement result corresponding to the condition LTM candidate cell is the best among all cell-level measurement results corresponding to the condition LTM candidate cells, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the third threshold.

[0147] Fourth condition 14: The cell-level measurement result corresponding to the conditional LTM candidate cell is the best among all cell-level measurement results corresponding to the conditional LTM candidate cells, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fourth threshold.

[0148] Fourth condition 15: The cell-level measurement result corresponding to the conditional LTM candidate cell is the best among all the cell-level measurement results corresponding to the conditional LTM candidate cells, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the fifth threshold.

[0149] It should be noted that if the terminal device has more than one serving beam, then the current serving beam of the terminal device in the fourth condition above can be the current best serving beam of the terminal device.

[0150] When the fourth condition is met, the terminal device initiates the handover process. This can be done when the measurement results of the serving cell are poor and the measurement results of the conditional LTM candidate cell are good. This avoids premature handover caused by initiating handover when the measurement results of the serving cell are good, and also improves the handover success rate.

[0151] How does the terminal device select the cell to initiate the handover procedure?

[0152] Terminal devices can select one conditional LTM candidate cell from one or more conditional LTM candidate cells to initiate a handover process.

[0153] As one possible implementation, the terminal device can arbitrarily select a conditional LTM candidate cell to initiate the handover procedure. Specifically, the terminal device can select a conditional LTM candidate cell to initiate the handover procedure based on its own implementation. This implementation method is relatively flexible.

[0154] As another possible implementation, the terminal device can select a candidate cell from the conditional LTM candidate cells that meet preset conditions to initiate a handover procedure. The preset conditions may include a first condition, a second condition, or a fourth condition. In some embodiments, the terminal device can select any one of the following cells to initiate the handover procedure (a first type of cell selection method): any one of the conditional LTM candidate cells that meets the first condition, or any one of the conditional LTM candidate cells that meets the second condition, or any one of the conditional LTM candidate cells that meets the fourth condition. In other embodiments, the terminal device may select one of the following cells to initiate a handover procedure (the second type of cell selection method): the cell with the best cell-level measurement result among the conditional LTM candidate cells that meets the first condition; or, a first cell that is a conditional LTM candidate cell and meets the first condition, and the beam measurement result corresponding to the best beam of the first cell is the best among the beam measurement results corresponding to all conditional LTM candidate cells that meet the first condition; or, the cell with the best cell-level measurement result among the conditional LTM candidate cells that meets the fourth condition; or, a second cell that is a conditional LTM candidate cell and meets the fourth condition, and the beam measurement result corresponding to the best beam of the second cell is the best among the beam measurement results corresponding to all conditional LTM candidate cells that meet the fourth condition. The explanations of the first, second, and fourth conditions are detailed above.

[0155] The terminal device selects a conditional LTM candidate cell that meets the first condition to initiate the handover procedure. This allows it to switch to a cell with better measurement results from the conditional LTM candidate cell, thereby improving the handover success rate. Furthermore, the reliability of the first condition is relatively high.

[0156] The terminal device selects a conditional LTM candidate cell that meets the second condition to initiate a handover process. It can hand over to the cell with the best measurement result among one or more conditional LTM candidate cells, thereby improving the handover success rate.

[0157] The terminal device selects a conditional LTM candidate cell that meets the fourth condition to initiate the handover process. This allows it to switch to a cell with better measurement results from the conditional LTM candidate cell when the measurement results of the serving cell are poor, thereby avoiding premature handover and improving the handover success rate.

[0158] As another possible implementation, the terminal device can select one of the predicted conditional LTM candidate cells that meet the handover conditions (i.e., conditional LTM candidate cells that may meet the handover conditions in the future) to initiate a handover procedure. For example, the terminal device can predict that at least one conditional LTM candidate cell will meet the handover conditions at a third time. In this case, the terminal device can select one of the predicted at least one conditional LTM candidate cell that meets the handover conditions to initiate a handover procedure. For example, the terminal device can choose the conditional LTM candidate cell whose handover conditions are met earliest to initiate the handover procedure, or the terminal device can arbitrarily select one of the predicted at least one conditional LTM candidate cell that meets the handover conditions to initiate a handover procedure.

[0159] Terminal devices can improve the handover success rate by selecting conditional LTM candidate cells that may meet the handover conditions in the future.

[0160] Based on the time when the terminal device initiates the handover procedure and the conditional LTM candidate cell selected by the terminal device to initiate the handover procedure, the preset behavior may include: the terminal device initiating the handover procedure to the selected conditional LTM candidate cell at the corresponding time.

[0161] The timing of the handover procedure initiated by the terminal device and the conditions for the terminal device to select LTM candidate cells to initiate the handover procedure, as described above, can be arbitrarily combined. For ease of understanding, examples of preset behaviors are provided below. Preset behaviors can include any one of behaviors 1.1 to 1.10.

[0162] Action 1.1: If the first condition is met, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets the first condition. If there is more than one conditional LTM candidate cell that meets the first condition, the terminal device will select one of the cells to initiate the handover procedure. The two methods for selecting a cell are described above and will not be repeated here. For example, the execution of Action 1.1 can occur at the moment the first condition is met. The moment the first condition is met can be the first instant or a time after the first instant.

[0163] Action 1.1, which determines the first condition, can improve the success rate of early LTM handover and has high reliability. If the first event is met, LTM handover may not be triggered immediately, giving terminal devices more flexibility, since the first condition is not necessarily met simultaneously with the first event; the terminal device can wait until the first condition is met before triggering LTM handover.

[0164] Action 1.2: If the first event is satisfied, the terminal device initiates a handover procedure to the conditional LTM candidate cell that satisfies the second condition. In other words, if the first event is satisfied, the terminal device can immediately initiate a handover procedure to the conditional LTM candidate cell that satisfies the second condition. For example, the moment when Action 1.2 is executed can be the moment when the first event is satisfied, i.e., the first moment.

[0165] Action 1.2 triggers the LTM switching judgment when the first event is met, which is simple to implement. At the same time, the additional judgment of the second condition can improve the success rate of early LTM switching.

[0166] Action 1.3: If the third condition is met, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets the first condition, or to a conditional LTM candidate cell that meets the second condition. If there is more than one conditional LTM candidate cell that meets the first condition, the terminal device will select one of these cells to initiate the handover procedure. The two methods for cell selection are described above and will not be repeated here. For example, Action 1.3 can be executed at the moment the third condition is met. The moment the third condition is met can be the first moment or a moment after the first moment.

[0167] Behavior 1.3 allows for initiating a handover process when the serving cell's measurement results are poor, avoiding premature handover caused by initiating the process when the serving cell's measurement results are good. Furthermore, it allows for not immediately triggering LTM handover when the first event is met, providing more flexibility to the terminal device, as the third condition is not necessarily met simultaneously with the first event; the terminal device can wait until the third condition is met before triggering LTM handover.

[0168] Action 1.4: If the fourth condition is met, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets the fourth condition. If there is more than one conditional LTM candidate cell that meets the fourth condition, the terminal device will select one of the cells to initiate the handover procedure. The two methods for selecting a cell are described above and will not be repeated here. For example, the execution of Action 1.4 can occur at the moment the fourth condition is met. The moment the fourth condition is met can be the first moment or a moment after the first moment.

[0169] Behavior 1.4 initiates the handover procedure when the measurement results of the serving cell are poor and the measurement results of the conditional LTM candidate cell are good. This avoids the problem of premature handover caused by initiating the handover procedure when the measurement results of the serving cell are good, and also avoids the problem of handover failure caused by poor measurement results of the conditional LTM candidate cell. Furthermore, LTM handover can be delayed until the first event is met, giving the terminal device more flexibility, because the fourth condition is not necessarily met at the same time as the first event. The terminal device can wait until the fourth condition is met before triggering LTM handover.

[0170] Action 1.5: Upon reaching the fifth time point, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets either the first or second condition. The time interval between the fifth time point and the first time point is the third duration. In other words, three durations after the first event is satisfied, the terminal device can initiate a handover procedure to a conditional LTM candidate cell that meets either the first or second condition.

[0171] Generally, waiting a period of time after the first event is met before triggering the LTM handover decision can improve the measurement results of the conditional LTM candidate cells. Therefore, behavior 1.5, which involves waiting for a period of time, increases the probability of meeting the first or second condition. Furthermore, calculating the fifth time based on the first time, i.e., determining the fifth time based on the current time, is easier for terminal equipment to implement. Additionally, further judging the first or second condition can improve the success rate of performing LTM handover earlier.

[0172] Action 1.6: Upon reaching the sixth time, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets either the first or second condition. The time interval between the predicted time when the terminal device triggers radio link failure in the serving cell and the sixth time is the fourth time period. In other words, four time periods prior to the predicted time when the terminal device triggers radio link failure in the serving cell, the terminal device can initiate a handover procedure to a conditional LTM candidate cell that meets either the first or second condition.

[0173] Generally, waiting a period of time after the first event is met before triggering the LTM handover decision can improve the measurement results of the conditional LTM candidate cells. Therefore, behavior 1.6, waiting for a period of time, can increase the probability of meeting the first or second condition. Furthermore, calculating the sixth time step based on the predicted time when the terminal device triggers radio link failure in the serving cell is easier for the terminal device to implement. Additionally, further determining the first or second condition can improve the success rate of performing LTM handover earlier.

[0174] Action 1.7: Upon reaching the seventh time, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets either the first or second condition. The seventh time is any time between the first time and the predicted time when the terminal device triggers a radio link failure in the serving cell. The seventh time can be the first time or a time after the first time. In other words, at any time between the current time and the predicted time when the terminal device triggers a radio link failure in the serving cell, the terminal device can initiate a handover procedure to a conditional LTM candidate cell that meets either the first or second condition. The seventh time can be determined based on the implementation of the terminal device.

[0175] In behavior 1.7, the terminal device can independently determine the timing of initiating the handover process, thus increasing its flexibility. Furthermore, additional checks on the first or second condition can improve the success rate of early LTM handover execution.

[0176] Action 1.8: If the first event is met, the terminal device arbitrarily selects a cell from at least one of the LTM candidate cells whose handover conditions are expected to be met to initiate a handover procedure. The execution of Action 1.8 can be the moment when the first event is met. In other words, if the first event is met, the terminal device can immediately arbitrarily select a cell from at least one of the LTM candidate cells whose handover conditions are expected to be met to initiate a handover procedure. The execution of Action 1.8 can be the moment when the first event is met, i.e., the first instant.

[0177] Behavior 1.8 triggers the LTM switching judgment when the first event is met, which is simple to implement. At the same time, the additional prediction of whether the switching condition is met can improve the success rate of early LTM switching.

[0178] Action 1.9: If the third condition is met, the terminal device arbitrarily selects a cell from at least one of the LTM candidate cells for which the handover condition is expected to be met to initiate a handover procedure. In other words, if the third condition is met, the terminal device can immediately arbitrarily select a cell from at least one of the LTM candidate cells for which the handover condition is expected to be met to initiate a handover procedure. For example, the execution of Action 1.9 can be at the moment the third condition is met. The moment the third condition is met can be the first moment or a moment after the first moment.

[0179] In behavior 1.9, the terminal device can initiate a handover process when the measurement results of the serving cell are poor. At the same time, additional prediction of whether the handover conditions are met can improve the success rate of early LTM handover.

[0180] Action 1.10: If the third condition is met, the terminal device initiates a handover procedure to a conditional LTM candidate cell where the handover condition is expected to be met and the time when the handover condition associated with the expected conditional LTM candidate cell is met is the shortest distance from the time when the third condition is met. In other words, if the third condition is met, the terminal device can immediately initiate a handover procedure to a conditional LTM candidate cell where the handover condition is expected to be met and the time when the handover condition associated with the expected conditional LTM candidate cell is met is the shortest distance from the time when the third condition is met. For example, the time of executing Action 1.10 can be the time when the third condition is met. The time when the third condition is met can be the first moment or a moment after the first moment.

[0181] In behavior 1.10, the terminal device can initiate a handover procedure when the measurement results of the serving cell are poor. At the same time, selecting the LTM candidate cell with the earliest predicted handover conditions to initiate the handover procedure can improve the success rate of performing LTM handover in advance.

[0182] In Embodiment 2, the configuration information may include second configuration information. That is, the terminal device can receive the second configuration information sent by the network device.

[0183] The second configuration information can be related to a preset behavior. In other words, the second configuration information can be related to the preset behavior provided in Embodiment 2. That is, the second configuration information can be used to configure parameters related to the preset behavior in Embodiment 2.

[0184] As one possible implementation, the second configuration information may include one or more of the following: a third parameter, a fourth parameter, a fifth parameter, a sixth parameter, a seventh parameter, an eighth parameter, and a ninth parameter. Wherein, the third parameter indicates the value of the first threshold; the fourth parameter indicates the value of the second threshold; the fifth parameter indicates the value of the third threshold; the sixth parameter indicates the value of the fourth threshold; the seventh parameter indicates the value of the fifth threshold; the eighth parameter indicates the value of the third duration; and the ninth parameter indicates the value of the fourth duration.

[0185] For example, the second configuration information may include a third parameter. When the preset behavior is related to the first condition, and the first condition includes a beam measurement result corresponding to the best beam of the conditional LTM candidate cell that is greater than a first threshold, the second configuration information may include a third parameter. For example, if the preset behavior includes behavior 1.1, then the second configuration information may include a third parameter.

[0186] For example, the second configuration information may include a fourth parameter. When the preset behavior is related to the first condition, and the first condition includes a cell-level measurement result corresponding to a conditional LTM candidate cell that is greater than a second threshold, the second configuration information may include a fourth parameter. For instance, if the preset behavior includes behavior 1.1, then the second configuration information may include a fourth parameter.

[0187] For example, the second configuration information may include a fifth parameter. When the preset behavior is related to a third condition, and the third condition includes the beam measurement result of the terminal device's current serving beam being less than or equal to a third threshold, the second configuration information may include a fifth parameter. For instance, if the preset behavior includes behavior 1.3, the second configuration information may include a fifth parameter.

[0188] For example, the second configuration information may include a sixth parameter. When the preset behavior is related to a third condition, and the third condition includes a beam measurement result corresponding to the best beam of the current serving cell of the terminal device being less than or equal to a fourth threshold, the second configuration information may include a sixth parameter. For instance, if the preset behavior includes behavior 1.3, the second configuration information may include a sixth parameter.

[0189] For example, the second configuration information may include a seventh parameter. When the preset behavior is related to a third condition, and the third condition includes a cell-level measurement result of the current serving cell of the terminal device being less than or equal to a fifth threshold, the second configuration information may include a seventh parameter. For instance, if the preset behavior includes behavior 1.3, the second configuration information may include a seventh parameter.

[0190] For example, the second configuration information may include a third parameter and a fifth parameter. When the preset behavior is related to a fourth condition, and the fourth condition includes a beam measurement result corresponding to the best beam of the conditional LTM candidate cell being greater than a first threshold, and the beam measurement result of the current serving beam of the terminal device being less than or equal to a third threshold, the second configuration information may include the third parameter and the fifth parameter. For instance, if the preset behavior includes behavior 1.4, the second configuration information may include the third parameter and the fifth parameter.

[0191] For example, the second configuration information may include a third parameter and a sixth parameter. When the preset behavior is related to a fourth condition, and the fourth condition includes a beam measurement result corresponding to the best beam of the conditional LTM candidate cell being greater than a first threshold, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device being less than or equal to the fourth threshold, the second configuration information may include the third parameter and the sixth parameter. For example, when the preset behavior includes behavior 1.4, the second configuration information may include the third parameter and the sixth parameter.

[0192] For example, the second configuration information may include a third parameter and a seventh parameter. When the preset behavior is related to a fourth condition, and the fourth condition includes a beam measurement result corresponding to the best beam of the conditional LTM candidate cell being greater than a first threshold, and the cell-level measurement result of the current serving cell of the terminal device being less than or equal to a fifth threshold, the second configuration information may include the third parameter and the seventh parameter. For instance, if the preset behavior includes behavior 1.4, the second configuration information may include the third parameter and the seventh parameter.

[0193] For example, the second configuration information may include a fourth parameter and a fifth parameter. When the preset behavior is related to the fourth condition, and the fourth condition includes a cell-level measurement result corresponding to the conditional LTM candidate cell being greater than a second threshold, and the beam measurement result of the current serving beam of the terminal device being less than or equal to a third threshold, the second configuration information may include the fourth parameter and the fifth parameter. For instance, if the preset behavior includes behavior 1.4, the second configuration information may include the fourth parameter and the fifth parameter.

[0194] For example, the second configuration information may include a fourth parameter and a sixth parameter. When the preset behavior is related to the fourth condition, and the fourth condition includes a cell-level measurement result corresponding to the conditional LTM candidate cell being greater than a second threshold, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device being less than or equal to the fourth threshold, the second configuration information may include the fourth parameter and the sixth parameter. For instance, when the preset behavior includes behavior 1.4, the second configuration information may include the fourth parameter and the sixth parameter.

[0195] For example, the second configuration information may include a fourth parameter and a seventh parameter. When the preset behavior is related to the fourth condition, and the fourth condition includes a cell-level measurement result corresponding to the conditional LTM candidate cell being greater than a second threshold, and the cell-level measurement result of the terminal device's current serving cell being less than or equal to a fifth threshold, the second configuration information may include the fourth parameter and the seventh parameter. For instance, when the preset behavior includes behavior 1.4, the second configuration information may include the fourth parameter and the seventh parameter.

[0196] For example, the second configuration information may include an eighth parameter. When the terminal device initiates a handover process at the fifth moment, the second configuration information may include the eighth parameter. For instance, if the preset behavior includes behavior 1.5, the second configuration information may include the eighth parameter.

[0197] For example, the second configuration information may include a ninth parameter. When the terminal device initiates a handover process at the sixth moment, the second configuration information may include the ninth parameter. For instance, if the preset behavior includes behavior 1.6, the second configuration information may include the ninth parameter.

[0198] As one possible implementation, the terminal device can send first information to a network device (e.g., an access network device). It should be noted that the network device sending the configuration information and the network device receiving the first information can be the same or different. It should also be noted that the network device receiving the capability information and the network device receiving the first information can be the same or different.

[0199] The first information can be used to indicate information related to a predicted radio link failure event triggered by the terminal device in the serving cell. Using this first information, network devices can adjust their communication strategies to prevent actual radio link failure events from occurring.

[0200] For example, if the terminal device is unable to initiate an LTM handover procedure before the predicted time of radio link failure in the serving cell (e.g., no LTM candidate cell meets the conditions for early handover initiation) or the LTM handover fails, the terminal device can send a first message to the network device. As mentioned above, by initiating an LTM handover procedure, the terminal device can prevent the radio link failure event from actually occurring; that is, the terminal device can adjust its communication strategy to avoid the radio link failure event from actually occurring. When the terminal device is unable to initiate an LTM handover procedure or the handover fails, the terminal device cannot prevent the radio link failure event from actually occurring by adjusting its communication strategy. In this case, the terminal device sends a first message to "request" the network device to adjust its communication strategy, thereby minimizing the occurrence of the radio link failure event.

[0201] For example, at the first moment, if the terminal device predicts that no conditional LTM candidate cell satisfies the first condition at any time before the terminal device triggers a radio link failure event in the serving cell, the terminal device may send first information to the network device. The moment when the terminal device triggers a radio link failure event in the serving cell can be a second moment or a fourth moment. That is, if, between the first moment and the second or fourth moment, none of the one or more candidate cells satisfy the first condition, the terminal device may send first information to the network device.

[0202] For example, at the first moment, if the terminal device predicts that no conditional LTM candidate cell satisfies the fourth condition at any time before the terminal device triggers a radio link failure event in the serving cell, the terminal device may send first information to the network device. The moment when the terminal device triggers a radio link failure event in the serving cell can be either the second moment or the fourth moment. That is, if none of the one or more candidate cells satisfy the fourth condition between the first moment and the second or fourth moment, the terminal device may send first information.

[0203] Taking any one of the preset behaviors, from behavior 1.1 to behavior 1.10, as an example, we will explain the reporting of the first information.

[0204] If, under the preset behavior including behavior 1.1, the terminal device predicts that at any time before the serving cell triggers a radio link failure event, no conditional LTM candidate cell satisfies the first condition, the terminal device sends first information. The terminal device may send the first information at the first moment.

[0205] If, under the preset behavior including behavior 1.3, the terminal device predicts that the serving cell does not meet the third condition at any time before the terminal device triggers a radio link failure event in the serving cell, the terminal device sends first information. The terminal device may send first information at the first moment.

[0206] If, under the preset behavior including behavior 1.4, the terminal device predicts that at any time before the serving cell triggers a radio link failure event, no conditional LTM candidate cell satisfies the fourth condition, the terminal device sends the first information. The terminal device may send the first information at the first moment.

[0207] When the preset behavior includes behavior 1.5, behavior 1.5 is that upon reaching the fifth time point, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets the first condition. If the terminal device predicts that no conditional LTM candidate cell meets the first condition at the fifth time point, the terminal device sends the first information. The terminal device can send the first information at either the first time point or the fifth time point.

[0208] When the preset behavior includes behavior 1.6, behavior 1.6 is that upon reaching the sixth time, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets the first condition. If the terminal device predicts that no conditional LTM candidate cell meets the first condition at the sixth time, the terminal device sends the first information. The terminal device can send the first information at either the first time or the sixth time.

[0209] When the preset behavior includes behavior 1.7, behavior 1.7 is that upon reaching the seventh time, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets the first condition. If the terminal device predicts that no conditional LTM candidate cell meets the first condition at the seventh time, the terminal device sends the first information. The terminal device can send the first information at either the first time or the seventh time.

[0210] Under the preset behavior including behavior 1.8, if the terminal device predicts that at any time before the serving cell triggers a radio link failure event, the terminal device does not predict that any conditional LTM candidate cell will meet the handover conditions, the terminal device sends first information. The terminal device can send first information at the first moment.

[0211] Under the preset behavior including behavior 1.9, if the terminal device predicts that at any time before the terminal device triggers a radio link failure event in the serving cell, the terminal device does not predict that any conditional LTM candidate cell meets the handover conditions, or the terminal device predicts that the third condition will never be met in the serving cell, the terminal device sends first information. The terminal device may send first information at a first moment.

[0212] In the case of preset behavior including behavior 1.10, if the terminal device predicts that at any time before the terminal device triggers a radio link failure event in the serving cell, the terminal device does not predict that any conditional LTM candidate cell meets the handover conditions, or the terminal device predicts that the third condition will never be met in the serving cell, the terminal device sends first information. The terminal device may send first information at a first moment.

[0213] For example, if the first event is met, the terminal device sends the first information to the network device. That is, if the terminal device predicts that a wireless link failure will occur, it can immediately send the first information to the network device. In other words, in response to the first event being met, the terminal device can immediately send the first information to the network device.

[0214] It is understandable that regardless of whether the terminal device initiates a handover action in advance, it can send the first message to the network device. In this case, both the terminal device and the network device can adjust their communication strategies to avoid actual radio link failures, thereby minimizing the probability of such events. After the first event is satisfied, the measurement results of the serving cell may gradually decrease. Therefore, sending the first message immediately upon satisfaction of the first event can increase the success rate of the network device corresponding to the serving cell receiving the first message.

[0215] The first information may include second information and / or third information, wherein the second information is used to indicate that the terminal device predicts that it will trigger a radio link failure in the serving cell at a future time. The third information is used to indicate detailed information related to the radio link failure event predicted by the terminal device.

[0216] Reporting third-party information allows network devices to obtain detailed early warning information before a terminal device actually triggers a wireless link failure event. This helps network devices adjust their strategies in a timely manner. For example, network devices can trigger timely handover commands (such as Layer 3 handover or LTM handover) to switch the terminal device to a different cell, thereby preventing the terminal device from actually triggering a wireless link failure event and improving the user throughput experience.

[0217] The first method for implementing third information will be introduced below.

[0218] In the first implementation, the third information may include one or more of the following: beam identification information corresponding to the beam with the best beam measurement result in the first beam set at the first time point actually measured by the terminal device; beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first time point actually measured by the terminal device; beam identification information corresponding to the beam with the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device; beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device; cell-level measurement result of the serving cell at the first time point actually measured by the terminal device; cell-level measurement result of the serving cell at the time when the wireless link failure event is predicted to be triggered by the terminal device; and fourth information, which is used to indicate the time interval length between the time when the wireless link failure event is predicted to be triggered by the terminal device and the time when the first information is reported; wherein, the first beam set is the beam set used by the terminal device to perform the wireless link failure monitoring task or is a beam set composed of reference beams indicated in the cell configuration corresponding to one or more conditional LTM candidate cells. The time at which the terminal device triggers a radio link failure event in the serving cell can be the second or fourth time.

[0219] When the third information includes the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first moment as actually measured by the terminal device, the network device can know which beam is the best beam at present, and thus adjust the communication strategy based on the beam to avoid the actual occurrence of wireless link failure events.

[0220] If the third information includes the beam measurement result corresponding to the best beam measurement result in the first beam set at the first moment, as actually measured by the terminal device, the network device can know the measurement result of the best beam at present, thereby quantitatively adjusting the communication strategy and avoiding the actual occurrence of wireless link failure events.

[0221] When the third information includes the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the moment when the wireless link failure event is predicted to be triggered by the terminal device, the network device can know which beam is the best beam at the moment when the predicted wireless link failure event is triggered, and thus adjust the communication strategy based on the beam to avoid the actual occurrence of the wireless link failure event.

[0222] If the third information includes the beam measurement result of the best beam in the first beam set at the moment when the wireless link failure event is predicted to be triggered by the terminal device, the network device can know the measurement result of the best beam at the moment when the predicted wireless link failure event is triggered, thereby quantitatively adjusting the communication strategy to avoid the actual occurrence of the wireless link failure event.

[0223] When the third information includes the cell-level measurement results of the serving cell at the first moment actually measured by the terminal device, the network device can know the cell-level measurement results of the current serving cell, and thus quantitatively adjust the communication strategy according to the cell-level measurement results of the current serving cell to avoid the actual occurrence of wireless link failure events.

[0224] If the third information includes the cell-level measurement results of the serving cell at the moment when the predicted wireless link failure event is triggered by the terminal device, the network device can know the cell-level measurement results of the serving cell at the moment when the predicted wireless link failure event is triggered, and thus quantitatively adjust the communication strategy according to the predicted cell-level measurement results of the serving cell to avoid the actual occurrence of the wireless link failure event.

[0225] When the third information includes the fourth information, the network device can assess the urgency of the wireless link failure event in order to flexibly adjust its strategy.

[0226] Optionally, the third information may include one of the information in the first implementation. For example, the third information may include the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device; or it may include the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device; or it may include the cell-level measurement result of the serving cell at the first time actually measured by the terminal device; or it may include the cell-level measurement result of the serving cell at the time when the wireless link failure event is predicted to be triggered by the terminal device; or it may include fourth information.

[0227] Optionally, the third information may include two types of information from the first implementation. For example, the third information may include the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first moment, as actually measured by the terminal device, and the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first moment, as actually measured by the terminal device; or it may include the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the moment the wireless link failure event is predicted to be triggered by the terminal device, and the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the moment the wireless link failure event is predicted to be triggered by the terminal device; or it may include the cell-level measurement result of the serving cell at the first moment, as actually measured by the terminal device, and the cell-level measurement result of the serving cell at the moment the wireless link failure event is predicted to be triggered by the terminal device. The results may include: beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first moment, as actually measured by the terminal device, and cell-level measurement results of the serving cell at the first moment, as actually measured by the terminal device; or beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the moment the wireless link failure event is predicted to be triggered by the terminal device, and cell-level measurement results of the serving cell at the moment the wireless link failure event is predicted to be triggered by the terminal device; or beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first moment, as actually measured by the terminal device, and fourth information; or beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the moment the wireless link failure event is predicted to be triggered by the terminal device, and fourth information; or cell-level measurement results of the serving cell at the first moment, as actually measured by the terminal device, and fourth information; or cell-level measurement results of the serving cell at the moment the wireless link failure event is predicted to be triggered by the terminal device, and fourth information.

[0228] Optionally, the third information may include the three types of information in the first implementation. For example, the third information may include the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, and the cell-level measurement result of the serving cell at the first time actually measured by the terminal device; or the third information may include the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, and the cell-level measurement result of the serving cell at the first time actually measured by the terminal device. The beam measurement result corresponding to the best-performing beam and the cell-level measurement result of the serving cell at the time the wireless link failure event is predicted by the terminal device; or the third information includes the beam identifier information corresponding to the best-performing beam in the first beam set at the first time, the beam measurement result corresponding to the best-performing beam in the first beam set at the first time, and the fourth information; or the beam identification information corresponding to the best-performing beam in the first beam set at the time the wireless link failure event is predicted by the terminal device. The beam identification information, the beam measurement result corresponding to the best beam measurement result in the first beam set at the time the wireless link failure event is predicted by the terminal device, and the cell-level measurement result of the serving cell at the first time actually measured by the terminal device; or including the beam identification information corresponding to the best beam measurement result in the first beam set at the time the wireless link failure event is predicted by the terminal device, the beam measurement result corresponding to the best beam measurement result in the first beam set at the time the wireless link failure event is predicted by the terminal device, and the cell-level measurement result of the serving cell at the first time actually measured by the terminal device; The cell-level measurement results of the serving cell at the time the wireless link failure event is triggered; or including the beam identification information corresponding to the beam with the best beam measurement result in the first beam set at the time the wireless link failure event is triggered as predicted by the terminal device, the beam measurement results corresponding to the beam with the best beam measurement result in the first beam set at the time the wireless link failure event is triggered as predicted by the terminal device, and the fourth information; or including the cell-level measurement results of the serving cell at the first time actually measured by the terminal device, the cell-level measurement results of the serving cell at the time the wireless link failure event is triggered as predicted by the terminal device, and the fourth information.

[0229] Optionally, the third information may include the four types of information in the first implementation. For example, the third information may include the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first moment, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first moment, the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the moment the wireless link failure event is predicted to be triggered by the terminal device, and the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the moment the wireless link failure event is predicted to be triggered by the terminal device; or it may include the beam measurement result in the first beam set at the first moment actually measured by the terminal device. The best beam identification information, the beam measurement result corresponding to the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the cell-level measurement result of the serving cell at the first time actually measured by the terminal device, and the cell-level measurement result of the serving cell at the time when the wireless link failure event is predicted by the terminal device; or including the beam identification information corresponding to the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the beam measurement result corresponding to the best beam measurement result in the first beam set at the first time actually measured by the terminal device, and the cell-level measurement result of the serving cell at the time when the wireless link failure event is predicted by the terminal device; or including the beam identification information corresponding to the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the beam measurement result corresponding to the best beam measurement result in the first beam set at the first time actually measured by the terminal device, and the cell-level measurement result of the serving cell at the time when the wireless link failure event is predicted by the terminal device. The cell-level measurement results of the serving cell and the fourth information; or including the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first moment actually measured by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first moment actually measured by the terminal device, the cell-level measurement results of the serving cell at the moment when the radio link failure event is predicted by the terminal device, and the fourth information; or including the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the moment when the radio link failure event is predicted by the terminal device, the cell-level measurement results of the serving cell at the moment when the radio link failure event is predicted by the terminal device, and the fourth information; or including the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the moment when the radio link failure event is predicted by the terminal device, and the fourth information. The beam measurement result corresponding to the beam with the best beam measurement result in a beam set, the cell-level measurement result of the serving cell at the first moment actually measured by the terminal device, and the cell-level measurement result of the serving cell at the moment when the wireless link failure event is predicted by the terminal device; or including the beam identification information corresponding to the beam with the best beam measurement result in the first beam set at the moment when the wireless link failure event is predicted by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the moment when the wireless link failure event is predicted by the terminal device, the cell-level measurement result of the serving cell at the first moment actually measured by the terminal device, and the fourth information;Alternatively, it may include the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the time the wireless link failure event is predicted to be triggered by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the time the wireless link failure event is predicted to be triggered by the terminal device, the cell-level measurement result of the serving cell at the time the wireless link failure event is predicted to be triggered by the terminal device, and the fourth information.

[0230] Optionally, the third information may include the five types of information in the first implementation. For example, the third information includes the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first moment, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first moment, the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the moment the wireless link failure event is predicted to be triggered by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the moment the wireless link failure event is predicted to be triggered by the terminal device, and the beam identifier information ... The cell-level measurement results of the serving cell at the first moment; or including the third information including the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first moment actually measured by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first moment actually measured by the terminal device, the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the moment when the wireless link failure event is predicted by the terminal device, and the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the moment when the wireless link failure event is predicted by the terminal device. The beam measurement results corresponding to the beam and the cell-level measurement results of the serving cell at the time the wireless link failure event is predicted by the terminal device; or including the third information including the beam identification information corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the beam measurement results corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the beam identification information corresponding to the beam with the best beam measurement result in the first beam set at the time the wireless link failure event is predicted by the terminal device, and the beam identification information of the serving cell at the time the wireless link failure event is predicted by the terminal device. The information includes: the beam measurement result corresponding to the best beam measurement result in the first beam set at the time the wireless link failure event is triggered, and the fourth information; or the beam identification information corresponding to the best beam measurement result in the first beam set at the first time as actually measured by the terminal device, the beam measurement result corresponding to the best beam measurement result in the first beam set at the first time as actually measured by the terminal device, the cell-level measurement result of the serving cell at the first time as actually measured by the terminal device, the cell-level measurement result of the serving cell at the time the wireless link failure event is triggered as predicted by the terminal device, and the fourth information.Alternatively, it may include the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the time the wireless link failure event is predicted to trigger by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the time the wireless link failure event is predicted to trigger by the terminal device, the cell-level measurement result of the serving cell at the first moment actually measured by the terminal device, the cell-level measurement result of the serving cell at the time the wireless link failure event is predicted to trigger by the terminal device, and the fourth information.

[0231] Optionally, the third information may include the six types of information in the first implementation. For example, the third information includes the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted by the terminal device, the cell-level measurement result of the serving cell at the first time actually measured by the terminal device, and the cell-level measurement result of the serving cell at the time when the wireless link failure event is predicted by the terminal device; or the third information includes the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the cell-level measurement result of the serving cell .... The third information includes: beam identifier information corresponding to the best beam measurement result in the first beam set at the time the wireless link failure event is triggered; beam measurement result corresponding to the best beam measurement result in the first beam set at the time the wireless link failure event is triggered as predicted by the terminal device; cell-level measurement result of the serving cell at the first moment actually measured by the terminal device; and fourth information. Alternatively, the third information may include: beam identifier information corresponding to the best beam measurement result in the first beam set at the first moment actually measured by the terminal device; beam measurement result corresponding to the best beam measurement result in the first beam set at the first moment actually measured by the terminal device; beam identifier information corresponding to the best beam measurement result in the first beam set at the time the wireless link failure event is triggered as predicted by the terminal device; beam measurement result corresponding to the best beam measurement result in the first beam set at the time the wireless link failure event is triggered as predicted by the terminal device; cell-level measurement result of the serving cell at the time the wireless link failure event is triggered as predicted by the terminal device; and fourth information.

[0232] Optionally, the third information may include the seven types of information in the first implementation. For example, the third information includes the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device, the cell-level measurement result of the serving cell at the first time actually measured by the terminal device, the cell-level measurement result of the serving cell at the time when the wireless link failure event is predicted to be triggered by the terminal device, and the fourth information.

[0233] The third information may also include information related to PCI and / or frequency point information. For example, the third information may also include one or more of the following: the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the first moment actually measured by the terminal device; the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the moment when the wireless link failure event is predicted to be triggered by the terminal device.

[0234] In the first implementation of the third information, the third information may also include the information related to PCI and / or frequency point information mentioned above.

[0235] Optionally, the third information may include one type of information from the first implementation and the aforementioned information related to PCI and / or frequency point information. For example, the third information may include the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first time, as measured by the terminal device, and the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the first time, as measured by the terminal device; or it may include the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the time the wireless link failure event is predicted to be triggered by the terminal device, and the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the time the wireless link failure event is predicted to be triggered by the terminal device; or it may include the cell-level measurement result of the serving cell at the first time, as measured by the terminal device; or it may include fourth information.

[0236] Optionally, the third information may include the two types of information in the first implementation and the information related to PCI and / or frequency point information mentioned above. For example, the third information includes the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first moment actually measured by the terminal device, the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the first moment actually measured by the terminal device, and the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first moment actually measured by the terminal device; or it may include the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the moment when the wireless link failure event is predicted by the terminal device, the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the first moment actually measured by the terminal device, and the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the moment when the wireless link failure event is predicted by the terminal device, and the beam identification information ... The information includes: the PCI and / or frequency information associated with the beam with the best beam measurement result in the first beam set at the time the wireless link failure event is triggered, and the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the time the wireless link failure event is predicted by the terminal device; or it includes the beam identification information corresponding to the beam with the best beam measurement result in the first beam set at the first moment actually measured by the terminal device, the PCI and / or frequency information associated with the beam with the best beam measurement result in the first beam set at the first moment actually measured by the terminal device, and the time the wireless link failure event is predicted by the terminal device. The beam identifier information corresponding to the beam with the best beam measurement result in the first beam set, and the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted by the terminal device; or including the cell-level measurement results of the serving cell actually measured by the terminal device at the first moment and the cell-level measurement results of the serving cell at the time when the wireless link failure event is predicted by the terminal device; or including the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set actually measured by the terminal device at the first moment, and the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set actually measured by the terminal device; or including the cell-level measurement results of the serving cell actually measured by the terminal device at the first moment. The PCI and / or frequency information associated with the beam with the best beam measurement result in the first beam set at the first moment, and the cell-level measurement result of the serving cell actually measured by the terminal device at the first moment; or including the beam identification information corresponding to the beam with the best beam measurement result in the first beam set at the moment when the wireless link failure event is predicted to be triggered by the terminal device, the PCI and / or frequency information associated with the beam with the best beam measurement result in the first beam set at the moment when the wireless link failure event is predicted to be triggered by the terminal device, and the cell-level measurement result of the serving cell at the moment when the wireless link failure event is predicted to be triggered by the terminal device;Alternatively, it may include the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first time point, the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the first time point, and a fourth piece of information; or it may include the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the time the wireless link failure event is predicted to be triggered by the terminal device, the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the time the wireless link failure event is predicted to be triggered by the terminal device, and a fourth piece of information; or it may include the cell-level measurement result of the serving cell at the first time point, as measured by the terminal device, and a fourth piece of information; or it may include the cell-level measurement result of the serving cell at the time the wireless link failure event is predicted to be triggered by the terminal device, and a fourth piece of information.

[0237] Optionally, the third information may include the three types of information in the first implementation and the information related to PCI and / or frequency point information mentioned above. For example, the third information includes the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, and the cell-level measurement result of the serving cell at the first time actually measured by the terminal device; or it may include the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device. The information includes: beam identification information, the PCI and / or frequency point information associated with the best beam measurement result in the first beam set at the first moment as actually measured by the terminal device, the beam measurement result corresponding to the best beam measurement result in the first beam set at the first moment as actually measured by the terminal device, and the cell-level measurement result of the serving cell at the moment when the wireless link failure event is predicted by the terminal device; or the third information includes the beam identification information corresponding to the best beam measurement result in the first beam set at the first moment as actually measured by the terminal device, and the beam measurement result corresponding to the best beam measurement result in the first beam set at the first moment as actually measured by the terminal device. The associated PCI and / or frequency point information, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first moment actually measured by the terminal device, and the fourth information; or including the beam identification information corresponding to the beam with the best beam measurement result in the first beam set at the moment the wireless link failure event is predicted to be triggered by the terminal device, the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the moment the wireless link failure event is predicted to be triggered by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the moment the wireless link failure event is predicted to be triggered by the terminal device, and the fourth information; The cell-level measurement results of the serving cell at the first moment actually measured by the terminal device; or including the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the moment the wireless link failure event is predicted by the terminal device, the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the moment the wireless link failure event is predicted by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the moment the wireless link failure event is predicted by the terminal device, and the cell-level measurement results of the serving cell at the moment the wireless link failure event is predicted by the terminal device;Alternatively, it may include the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the time the wireless link failure event is predicted to be triggered by the terminal device, the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the time the wireless link failure event is predicted to be triggered by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the time the wireless link failure event is predicted to be triggered by the terminal device, and the fourth information; or it may include the cell-level measurement result of the serving cell at the first moment actually measured by the terminal device, the cell-level measurement result of the serving cell at the time the wireless link failure event is predicted to be triggered by the terminal device, and the fourth information.

[0238] Optionally, the third information may include the four types of information in the first implementation and the information related to PCI and / or frequency point information mentioned above. For example, the third information includes the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first moment actually measured by the terminal device, the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the first moment actually measured by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first moment actually measured by the terminal device, the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the moment when the wireless link failure event is predicted by the terminal device, the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the moment when the wireless link failure event is predicted by the terminal device, and the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the moment when the wireless link failure event is predicted by the terminal device. Alternatively, it may include the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first moment, as actually measured by the terminal device; the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the first moment, as actually measured by the terminal device; the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first moment, as actually measured by the terminal device; the cell-level measurement result of the serving cell at the first moment, as actually measured by the terminal device; and the cell-level measurement result of the serving cell at the moment when the radio link failure event is predicted by the terminal device. The information includes: the PCI and / or frequency information associated with the best beam measurement result; the beam measurement result corresponding to the best beam measurement result in the first beam set at the first time actually measured by the terminal device; the cell-level measurement result of the serving cell at the first time actually measured by the terminal device; and a fourth piece of information. Alternatively, it may include: the beam identification information corresponding to the best beam measurement result in the first beam set at the first time actually measured by the terminal device; the PCI and / or frequency information associated with the best beam measurement result in the first beam set at the first time actually measured by the terminal device; the beam measurement result corresponding to the best beam measurement result in the first beam set at the first time actually measured by the terminal device; the cell-level measurement result of the serving cell at the time the wireless link failure event is predicted to be triggered by the terminal device; and a fourth piece of information.Alternatively, it may include the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the time the wireless link failure event is predicted by the terminal device, the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the time the wireless link failure event is predicted by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the time the wireless link failure event is predicted by the terminal device, the cell-level measurement result of the serving cell at the first moment actually measured by the terminal device, and the cell-level measurement result of the serving cell at the time the wireless link failure event is predicted by the terminal device; or it may include the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the time the wireless link failure event is predicted by the terminal device, the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the time the wireless link failure event is predicted by the terminal device, and the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the time the wireless link failure event is predicted by the terminal device. The information includes: the PCI and / or frequency information associated with the best beam in the beam measurement results; the beam measurement results corresponding to the best beam in the first beam set at the time the wireless link failure event is predicted by the terminal device; the cell-level measurement results of the serving cell at the first moment actually measured by the terminal device; and a fourth piece of information. Alternatively, it may include: the beam identification information corresponding to the best beam in the first beam set at the time the wireless link failure event is predicted by the terminal device; the PCI and / or frequency information associated with the best beam in the first beam set at the time the wireless link failure event is predicted by the terminal device; the beam measurement results corresponding to the best beam in the first beam set at the time the wireless link failure event is predicted by the terminal device; the cell-level measurement results of the serving cell at the time the wireless link failure event is predicted by the terminal device; and a fourth piece of information.

[0239] Optionally, the third information may include the five types of information in the first implementation and the information related to PCI and / or frequency point information mentioned above. For example, the third information includes the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted by the terminal device, the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted by the terminal device, and the cell-level measurement result of the serving cell at the first time actually measured by the terminal device; or it may include the... The third information includes the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted by the terminal device, the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted by the terminal device, and the cell-level measurement result of the serving cell at the time when the wireless link failure event is predicted by the terminal device.Alternatively, the third information may include the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first moment actually measured by the terminal device, the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the first moment actually measured by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first moment actually measured by the terminal device, the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the moment the wireless link failure event is predicted to be triggered by the terminal device, the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the moment the wireless link failure event is predicted to be triggered by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the moment the wireless link failure event is predicted to be triggered by the terminal device, and the fourth information; or it may include the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first moment actually measured by the terminal device, ... beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first moment actually measured by the terminal device, the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first moment actually measured by the terminal device, the beam identifier information corresponding to the beam with the best beam measurement result in the The information includes: the PCI and / or frequency information associated with the beam with the best beam measurement result in the beam set; the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device; the cell-level measurement result of the serving cell at the first time actually measured by the terminal device; the cell-level measurement result of the serving cell at the time when the radio link failure event is predicted by the terminal device; and a fourth piece of information. Alternatively, it may include: the beam identification information corresponding to the beam with the best beam measurement result in the first beam set at the time when the radio link failure event is predicted by the terminal device; the PCI and / or frequency information associated with the beam with the best beam measurement result in the first beam set at the time when the radio link failure event is predicted by the terminal device; the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the time when the radio link failure event is predicted by the terminal device; the cell-level measurement result of the serving cell at the first time actually measured by the terminal device; the cell-level measurement result of the serving cell at the time when the radio link failure event is predicted by the terminal device; and a fourth piece of information.

[0240] Optionally, the third information may include the six types of information in the first implementation as well as the information related to PCI and / or frequency point information mentioned above. For example, the third information includes the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first time point actually measured by the terminal device; the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the first time point actually measured by the terminal device; the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first time point actually measured by the terminal device; the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device; the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device; the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device; the cell-level measurement result of the serving cell at the first time point actually measured by the terminal device; and the information related to the wireless link failure event predicted by the terminal device. The information includes: cell-level measurement results of the serving cell at any given time; or the third information including: beam identifier information corresponding to the best beam measurement result in the first beam set at the first time actually measured by the terminal device; PCI and / or frequency point information associated with the best beam measurement result in the first beam set at the first time actually measured by the terminal device; beam measurement result corresponding to the best beam measurement result in the first beam set at the first time actually measured by the terminal device; beam identifier information corresponding to the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted by the terminal device; PCI and / or frequency point information associated with the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted by the terminal device; beam measurement result corresponding to the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted by the terminal device; cell-level measurement results of the serving cell at the first time actually measured by the terminal device; and the fourth information.Alternatively, the third information may include the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first moment, the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the first moment, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first moment, the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the moment the wireless link failure event is predicted to be triggered by the terminal device, the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the moment the wireless link failure event is predicted to be triggered by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the moment the wireless link failure event is predicted to be triggered by the terminal device, the cell-level measurement result of the serving cell at the moment the wireless link failure event is predicted to be triggered by the terminal device, and the fourth information.

[0241] Optionally, the third information may include the seven types of information in the first implementation as well as the information related to PCI and / or frequency point information mentioned above. For example, the third information includes the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first time actually measured by the terminal device, the beam identifier information corresponding to the beam with the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device, the PCI and / or frequency point information associated with the beam with the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device, the beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device, the cell-level measurement result of the serving cell at the first time actually measured by the terminal device, the cell-level measurement result of the serving cell at the time when the wireless link failure event is predicted to be triggered by the terminal device, and the fourth information.

[0242] The second implementation of the third information is described below. In this second implementation, the third information includes one or more of the following: beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the first moment, as actually measured by the terminal device; beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first moment, as actually measured by the terminal device; beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the moment the wireless link failure event is predicted to be triggered by the terminal device; beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the moment the wireless link failure event is predicted to be triggered by the terminal device. The beam set includes: the beam measurement results corresponding to the beam; the cell-level measurement results of the serving cell at the first moment actually measured by the terminal device; the cell-level measurement results of the serving cell at the moment when the radio link failure event predicted by the terminal device is triggered; and fourth information, which indicates the time interval length between the moment when the radio link failure event predicted by the terminal device is triggered and the moment when the first information is reported; wherein, K is a positive integer, and the first beam set is the beam set used by the terminal device to perform the radio link failure monitoring task or the beam set composed of reference beams indicated in the cell configuration corresponding to one or more conditional LTM candidate cells.

[0243] When the third information includes the beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the first moment as actually measured by the terminal device, the network device can know one or more of the better beams at present, thereby adjusting the communication strategy and avoiding the actual occurrence of wireless link failure events.

[0244] When the third information includes the beam measurement results of the top K best beams in the first beam set at the first moment as actually measured by the terminal device, the network device can know the measurement results of one or more of the better beams at present, thereby quantitatively adjusting the communication strategy and avoiding the actual occurrence of wireless link failure events.

[0245] When the third information includes the beam identification information of the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device, the network device can know which beams are the better beams at the time when the predicted wireless link failure event is triggered, and thus adjust the communication strategy based on the beams to avoid the actual occurrence of the wireless link failure event.

[0246] If the third information includes the beam measurement results of the top K beams with the best beam measurement results in the first beam set at the time when the predicted wireless link failure event is triggered by the terminal device, the network device can know the measurement results of one or more of the better beams at the time when the predicted wireless link failure event is triggered, thereby quantitatively adjusting the communication strategy to avoid the actual occurrence of the wireless link failure event.

[0247] When the third information includes the cell-level measurement results of the serving cell at the first moment actually measured by the terminal device, the network device can know the cell-level measurement results of the current serving cell, and thus quantitatively adjust the communication strategy according to the cell-level measurement results of the current serving cell to avoid the actual occurrence of wireless link failure events.

[0248] If the third information includes the cell-level measurement results of the serving cell at the moment when the predicted wireless link failure event is triggered by the terminal device, the network device can know the cell-level measurement results of the serving cell at the moment when the predicted wireless link failure event is triggered, and thus quantitatively adjust the communication strategy according to the predicted cell-level measurement results of the serving cell to avoid the actual occurrence of the wireless link failure event.

[0249] When the third information includes the fourth information, the network device can assess the urgency of the wireless link failure event in order to flexibly adjust its strategy.

[0250] Optionally, the third information may include one of the information in the second implementation. For example, the third information may include the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time point actually measured by the terminal device; or it may include the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device; or it may include the cell-level measurement results of the serving cell at the first time point actually measured by the terminal device; or it may include the cell-level measurement results of the serving cell at the time when the wireless link failure event is predicted to be triggered by the terminal device; or it may include fourth information.

[0251] Optionally, the third information may include the two types of information from the second implementation. For example, the third information includes the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, and the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device; or it includes the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event is predicted by the terminal device, and the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event is predicted by the terminal device; or it includes the cell-level measurement results of the serving cell at the first time actually measured by the terminal device, and the cell-level measurement results of the serving cell at the time when the wireless link failure event is predicted by the terminal device. The results may include: district-level measurement results; or beam identification information corresponding to the top K best beam measurement results in the first beam set at the first time, as actually measured by the terminal device, and cell-level measurement results of the serving cell at the first time, as actually measured by the terminal device; or beam identification information corresponding to the top K best beam measurement results in the first beam set at the time the wireless link failure event is predicted to be triggered by the terminal device, and cell-level measurement results of the serving cell at the time the wireless link failure event is predicted to be triggered by the terminal device; or beam identification information corresponding to the top K best beam measurement results in the first beam set at the first time, as actually measured by the terminal device, and fourth information; or beam identification information corresponding to the top K best beam measurement results in the first beam set at the time the wireless link failure event is predicted to be triggered by the terminal device, and fourth information; or cell-level measurement results of the serving cell at the first time, as actually measured by the terminal device, and fourth information; or cell-level measurement results of the serving cell at the time the wireless link failure event is predicted to be triggered by the terminal device, and fourth information.

[0252] Optionally, the third information may include the three types of information in the second implementation. For example, the third information includes the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, and the cell-level measurement results of the serving cell at the first time actually measured by the terminal device; or the third information may include the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, and the cell-level measurement results of the serving cell at the first time actually measured by the terminal device. The beam measurement results corresponding to the top K beams with the best beam measurement results and the cell-level measurement results of the serving cell at the time when the wireless link failure event is predicted by the terminal device; or including the third information including the beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, and the fourth information; or including the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event is predicted by the terminal device. The beam identification information corresponding to the beam, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted by the terminal device, and the cell-level measurement results of the serving cell actually measured by the terminal device at the first time; or including the beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted by the terminal device, and the cell-level measurement results of the serving cell actually measured by the terminal device at the first time; The information may include: cell-level measurement results of the serving cell at the time the radio link failure event is triggered; or beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the time the radio link failure event is triggered, as predicted by the terminal device; beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the time the radio link failure event is triggered, as predicted by the terminal device; and fourth information; or cell-level measurement results of the serving cell at the first time actually measured by the terminal device; cell-level measurement results of the serving cell at the time the radio link failure event is triggered, as predicted by the terminal device; and fourth information.

[0253] Optionally, the third information may include the four types of information in the second implementation. For example, the third information includes the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first moment actually measured by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first moment actually measured by the terminal device, the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the moment when the wireless link failure event is predicted to be triggered by the terminal device, and the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the moment when the wireless link failure event is predicted to be triggered by the terminal device. The beam measurement results; or including the beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the cell-level measurement results of the serving cell at the first time actually measured by the terminal device, and the cell-level measurement results of the serving cell at the time when the radio link failure event is predicted by the terminal device; or including the best beam measurement results in the first beam set at the first time actually measured by the terminal device. The beam identification information corresponding to the first K beams, the beam measurement results corresponding to the first K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the cell-level measurement results of the serving cell at the first time actually measured by the terminal device, and fourth information; or including the beam identification information corresponding to the first K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam measurement results corresponding to the first K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, and the information predicted by the terminal device. The cell-level measurement results of the serving cell at the time the wireless link failure event is triggered, and the fourth information; or including the beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is triggered as predicted by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is triggered as predicted by the terminal device, the cell-level measurement results of the serving cell at the first time actually measured by the terminal device, and the cell-level measurement results of the serving cell at the time the wireless link failure event is triggered as predicted by the terminal device;Alternatively, it may include beam identification information corresponding to the top K best beam measurement results in the first beam set at the time the wireless link failure event is predicted to trigger by the terminal device, beam measurement results corresponding to the top K best beam measurement results in the first beam set at the time the wireless link failure event is predicted to trigger by the terminal device, cell-level measurement results of the serving cell at the first moment actually measured by the terminal device, and a fourth piece of information; or it may include beam identification information corresponding to the top K best beam measurement results in the first beam set at the time the wireless link failure event is predicted to trigger by the terminal device, beam measurement results corresponding to the top K best beam measurement results in the first beam set at the time the wireless link failure event is predicted to trigger by the terminal device, cell-level measurement results of the serving cell at the time the wireless link failure event is predicted to trigger by the terminal device, and a fourth piece of information.

[0254] Optionally, the third information may include the five types of information in the second implementation. For example, the third information includes the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first moment actually measured by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first moment actually measured by the terminal device, the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the moment when the wireless link failure event is predicted to be triggered by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the moment when the wireless link failure event is predicted to be triggered by the terminal device, and the information of the terminal device's actual measurement results. The cell-level measurement results of the serving cell at the first moment actually measured; or including the third information including the beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the first moment actually measured by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first moment actually measured by the terminal device, the beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the moment when the wireless link failure event is predicted to be triggered by the terminal device, and the beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the moment when the wireless link failure event is predicted to be triggered by the terminal device. The beam measurement results corresponding to the first K beams and the cell-level measurement results of the serving cell at the time when the wireless link failure event is predicted by the terminal device; or including the third information including the beam identification information corresponding to the first K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam measurement results corresponding to the first K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam identification information corresponding to the first K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event is predicted by the terminal device, and the cell-level measurement results of the serving cell at the time when the wireless link failure event is predicted by the terminal device. The information includes: the beam measurement results of the top K best beams in the first beam set at the time the wireless link failure event is triggered, and the fourth information; or the beam identification information corresponding to the top K best beams in the first beam set at the first time as actually measured by the terminal device, the beam measurement results corresponding to the top K best beams in the first beam set at the first time as actually measured by the terminal device, the cell-level measurement results of the serving cell at the first time as actually measured by the terminal device, the cell-level measurement results of the serving cell at the time the wireless link failure event is triggered as predicted by the terminal device, and the fourth information.Alternatively, it may include beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted to trigger by the terminal device, beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted to trigger by the terminal device, cell-level measurement results of the serving cell at the first moment actually measured by the terminal device, cell-level measurement results of the serving cell at the time the wireless link failure event is predicted to trigger by the terminal device, and fourth information.

[0255] Optionally, the third information may include the six types of information in the second implementation. For example, the third information includes the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the time predicted by the terminal device when the wireless link failure event is triggered, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the time predicted by the terminal device when the wireless link failure event is triggered, the cell-level measurement results of the serving cell at the first time actually measured by the terminal device, and the cell-level measurement results of the serving cell at the time predicted by the terminal device when the wireless link failure event is triggered; or it includes the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the cell-level measurement results of the serving cell at the time predicted by the terminal device when the wireless link failure event is triggered; or it includes the third information including the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the cell-level measurement results of the serving cell at the time predicted by the terminal device when the wireless link failure event is triggered; or it includes the cell-level measurement results of the serving cell ... identifier information corresponding to the top K beam The third information includes: beam identification information corresponding to the top K best beam measurement results in the first beam set at the time the wireless link failure event is triggered; beam measurement results corresponding to the top K best beam measurement results in the first beam set at the time the wireless link failure event is triggered as predicted by the terminal device; cell-level measurement results of the serving cell at the first moment actually measured by the terminal device; and fourth information. Alternatively, the third information may include: beam identification information corresponding to the top K best beam measurement results in the first beam set at the first moment actually measured by the terminal device; beam measurement results corresponding to the top K best beam measurement results in the first beam set at the first moment actually measured by the terminal device; beam identification information corresponding to the top K best beam measurement results in the first beam set at the time the wireless link failure event is triggered as predicted by the terminal device; beam measurement results corresponding to the top K best beam measurement results in the first beam set at the time the wireless link failure event is triggered as predicted by the terminal device; cell-level measurement results of the serving cell at the time the wireless link failure event is triggered as predicted by the terminal device; and fourth information.

[0256] Optionally, the third information may include the seven types of information in the second implementation. For example, the third information includes the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device, the cell-level measurement results of the serving cell at the first time actually measured by the terminal device, the cell-level measurement results of the serving cell at the time when the wireless link failure event is predicted to be triggered by the terminal device, and the fourth information.

[0257] As mentioned above, the third information may also include information related to PCI and / or frequency point information. In a second implementation of the third information, the third information may also include the aforementioned information related to PCI and / or frequency point information.

[0258] Optionally, the third information may include one of the information in the second implementation and the aforementioned information related to PCI and / or frequency point information. For example, the third information may include the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, and the PCI and / or frequency point information associated with the top K beam measurement results in the first beam set at the first time actually measured by the terminal device; or it may include the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device, and the PCI and / or frequency point information associated with the top K beam measurement results in the first beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device; or it may include the cell-level measurement results of the serving cell at the first time actually measured by the terminal device; or it may include the cell-level measurement results of the serving cell at the time when the wireless link failure event is predicted to be triggered by the terminal device; or it may include fourth information.

[0259] Optionally, the third information may include the two types of information in the second implementation and the information related to PCI and / or frequency point information mentioned above. For example, the third information includes the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, and the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device; or it may include the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event is predicted by the terminal device, the PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, and the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event is predicted by the terminal device, and the beam identifier information ... first time when the wireless link failure event is predicted by the terminal device, and the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time when the wireless link failure event is predicted by the terminal device, and the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time when the wireless link failure event is predicted by the terminal device, and the beam identifier information corresponding to the top K The information includes the PCI and / or frequency points associated with the top K beams in the first beam set with the best beam measurement results at the time the wireless link failure event is triggered, and the beam measurement results corresponding to the top K beams in the first beam set with the best beam measurement results predicted by the terminal device at the time the wireless link failure event is triggered; or it includes the beam identification information corresponding to the top K beams in the first beam set with the best beam measurement results actually measured by the terminal device at the first time, the PCI and / or frequency points associated with the top K beams in the first beam set with the best beam measurement results actually measured by the terminal device at the first time, and the information included in the wireless link failure event predicted by the terminal device. The information includes: beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the time of transmission; and PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the time of the wireless link failure event predicted by the terminal device; or cell-level measurement results of the serving cell actually measured by the terminal device at the first time and cell-level measurement results of the serving cell predicted by the terminal device at the time of the wireless link failure event triggered by the terminal device; or beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, and PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device. The information includes: PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the first moment; and cell-level measurement results of the serving cell actually measured by the terminal device at the first moment; or the information includes: beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the moment when the wireless link failure event is predicted to be triggered by the terminal device; PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the moment when the wireless link failure event is predicted to be triggered by the terminal device; and cell-level measurement results of the serving cell at the moment when the wireless link failure event is predicted to be triggered by the terminal device.Alternatively, it may include the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time point, the PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the first time point, and a fourth piece of information; or it may include the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted to be triggered by the terminal device, the PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted to be triggered by the terminal device, and a fourth piece of information; or it may include the cell-level measurement results of the serving cell at the first time point, as measured by the terminal device, and a fourth piece of information; or it may include the cell-level measurement results of the serving cell at the time the wireless link failure event is predicted to be triggered by the terminal device, and a fourth piece of information.

[0260] Optionally, the third information may include the three types of information in the second implementation as well as the information related to PCI and / or frequency point information mentioned above. For example, the third information includes the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the PCI and / or frequency point information associated with the top K beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam measurement results corresponding to the top K beam measurement results in the first beam set at the first time actually measured by the terminal device, and the cell-level measurement results of the serving cell at the first time actually measured by the terminal device; or it includes the third information including the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the PCI and / or frequency point information associated with the top K beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam measurement results corresponding to the top K beam measurement results in the first beam set at the first time actually measured by the terminal device, and the serving cell at the time when the wireless link failure event is predicted by the terminal device. The cell-level measurement results of the area; or including the third information including the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the PCI and / or frequency point information associated with the top K beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam measurement results corresponding to the top K beam measurement results in the first beam set at the first time actually measured by the terminal device, and the fourth information; or including the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event is predicted by the terminal device, the PCI and / or frequency point information associated with the top K beam measurement results in the first beam set at the time when the wireless link failure event is predicted by the terminal device, the beam measurement results corresponding to the top K beam measurement results in the first beam set at the time when the wireless link failure event is predicted by the terminal device, and the cell-level measurement results of the serving cell at the first time actually measured by the terminal device;Alternatively, it may include the beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted by the terminal device, the PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted by the terminal device, and the cell-level measurement results of the serving cell at the time the wireless link failure event is predicted by the terminal device; or it may include the wireless link failure event predicted by the terminal device. The information includes: beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the time the event is triggered; PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted by the terminal device; beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted by the terminal device; and fourth information; or it includes the cell-level measurement results of the serving cell at the first moment actually measured by the terminal device; the cell-level measurement results of the serving cell at the time the wireless link failure event is predicted by the terminal device; and fourth information.

[0261] Optionally, the third information may include the four types of information in the second implementation and the information related to PCI and / or frequency point information mentioned above. For example, the third information includes the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event is predicted by the terminal device, and the wireless link failure event predicted by the terminal device. The information includes: the PCI and / or frequency point information associated with the top K beams in the first beam set with the best beam measurement results at the time the event is triggered; and the beam measurement results corresponding to the top K beams in the first beam set with the best beam measurement results at the time the wireless link failure event is predicted by the terminal device; or it includes the beam identification information corresponding to the top K beams in the first beam set with the best beam measurement results actually measured by the terminal device at the first time, the PCI and / or frequency point information associated with the top K beams in the first beam set with the best beam measurement results actually measured by the terminal device at the first time, and the beam identification information corresponding to the top K beams in the first beam set with the best beam measurement results actually measured by the terminal device at the first time. The beam measurement results corresponding to the first K beams, the cell-level measurement results of the serving cell actually measured by the terminal device at the first moment, and the cell-level measurement results of the serving cell at the moment when the radio link failure event is predicted by the terminal device; or including the beam identification information corresponding to the first K beams with the best beam measurement results in the first beam set actually measured by the terminal device at the first moment, the PCI and / or frequency point information associated with the first K beams with the best beam measurement results in the first beam set actually measured by the terminal device at the first moment, and the beam measurement results corresponding to the first K beams with the best beam measurement results in the first beam set actually measured by the terminal device at the first moment. The results include: the cell-level measurement results of the serving cell at the first moment actually measured by the terminal device, and the fourth information; or the beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the first moment actually measured by the terminal device, the PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the first moment actually measured by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first moment actually measured by the terminal device, the cell-level measurement results of the serving cell at the moment when the wireless link failure event is predicted by the terminal device, and the fourth information.Alternatively, it may include beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted by the terminal device, PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted by the terminal device, beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted by the terminal device, cell-level measurement results of the serving cell at the first moment actually measured by the terminal device, and cell-level measurement results of the serving cell at the time the wireless link failure event is predicted by the terminal device; or it may include beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted by the terminal device, PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted by the terminal device, and beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted by the terminal device. The information includes: PCI and / or frequency point information associated with the top K beams with the best beam measurement results; beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted by the terminal device; cell-level measurement results of the serving cell at the first time actually measured by the terminal device; and fourth information. Alternatively, it may include: beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted by the terminal device; PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted by the terminal device; beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted by the terminal device; cell-level measurement results of the serving cell at the time the wireless link failure event is predicted by the terminal device; and fourth information.

[0262] Optionally, the third information may include the five types of information in the second implementation as well as the information related to PCI and / or frequency point information mentioned above. For example, the third information includes the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the PCI and / or frequency point information associated with the top K beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam measurement results corresponding to the top K beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam identifier information corresponding to the top K beam measurement results in the first beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device, the PCI and / or frequency point information associated with the top K beam measurement results in the first beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device, the beam measurement results corresponding to the top K beam measurement results in the first beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device, and the cell-level measurement results of the serving cell at the first time actually measured by the terminal device; or includes The third information includes the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event is predicted by the terminal device, the PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event is predicted by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event is predicted by the terminal device, and the cell-level measurement results of the serving cell at the time when the wireless link failure event is predicted by the terminal device.Alternatively, the third information may include the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first moment as actually measured by the terminal device, the PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the first moment as actually measured by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first moment as actually measured by the terminal device, and the top K beams with the best beam measurement results in the first beam set at the moment when the wireless link failure event is predicted by the terminal device. The beam identification information corresponding to K beams, the PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted by the terminal device, and the fourth information; or including the beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, ..., the beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set, the beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set, the beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set, the beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set, the beam identification The information includes: the PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set; the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first moment actually measured by the terminal device; the cell-level measurement results of the serving cell at the first moment actually measured by the terminal device; the cell-level measurement results of the serving cell at the moment when the radio link failure event is predicted by the terminal device; and fourth information; or it includes the information of the top K beams with the best beam measurement results in the first beam set at the moment when the radio link failure event is predicted by the terminal device. The information includes: beam identification information corresponding to the first K beams; PCI and / or frequency point information associated with the first K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted to be triggered by the terminal device; beam measurement results corresponding to the first K beams with the best beam measurement results in the first beam set at the time the wireless link failure event is predicted to be triggered by the terminal device; cell-level measurement results of the serving cell at the first moment actually measured by the terminal device; cell-level measurement results of the serving cell at the time the wireless link failure event is predicted to be triggered by the terminal device; and fourth information.

[0263] Optionally, the third information may include the six types of information in the second implementation as well as the information related to PCI and / or frequency point information mentioned above. For example, the third information includes the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first time actually measured by the terminal device, the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event is predicted by the terminal device, the PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event is predicted by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event is predicted by the terminal device, the cell-level measurement results of the serving cell at the first time actually measured by the terminal device, and the wireless link failure event predicted by the terminal device. The information includes: cell-level measurement results of the serving cell at the first moment; or the third information including: beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first moment actually measured by the terminal device; PCI and / or frequency point information associated with the top K beam measurement results in the first beam set at the first moment actually measured by the terminal device; beam measurement results corresponding to the top K beam measurement results in the first beam set at the first moment actually measured by the terminal device; beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the moment when the wireless link failure event is predicted by the terminal device; PCI and / or frequency point information associated with the top K beam measurement results in the first beam set at the moment when the wireless link failure event is predicted by the terminal device; beam measurement results corresponding to the top K beam measurement results in the first beam set at the moment when the wireless link failure event is predicted by the terminal device; cell-level measurement results of the serving cell at the first moment actually measured by the terminal device; and the fourth information.Alternatively, the third information may include the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first moment, the PCI and / or frequency point information associated with the top K beam measurement results in the first beam set at the first moment, the beam measurement results corresponding to the top K beam measurement results in the first beam set at the first moment, the beam identifier information corresponding to the top K beam measurement results in the first beam set at the first moment, the PCI and / or frequency point information associated with the top K beam measurement results in the first beam set at the moment the wireless link failure event is predicted to be triggered by the terminal device, the beam measurement results corresponding to the top K beam measurement results in the first beam set at the moment the wireless link failure event is predicted to be triggered by the terminal device, the cell-level measurement results of the serving cell at the moment the wireless link failure event is predicted to be triggered by the terminal device, and the fourth information.

[0264] Optionally, the third information may include the seven types of information in the second implementation and the aforementioned information related to PCI and / or frequency point information. For example, the third information may include the beam identifier information corresponding to the top K beams with the best beam measurement results in the first beam set at the first moment actually measured by the terminal device, the PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the first moment actually measured by the terminal device, the beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first moment actually measured by the terminal device, and the top K beams with the best beam measurement results in the first beam set at the moment the wireless link failure event is predicted to be triggered by the terminal device. The information includes: beam identification information corresponding to K beams; PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event is predicted by the terminal device; beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event is predicted by the terminal device; cell-level measurement results of the serving cell at the first moment actually measured by the terminal device; cell-level measurement results of the serving cell at the time when the wireless link failure event is predicted by the terminal device; and fourth information.

[0265] The PCI and / or frequency information associated with the first K beams may be the same or different.

[0266] In this application, the value of K can satisfy one or more of the following: predefined, preset value, network device configuration.

[0267] As described above, the terminal device can send capability information to the network device. This capability information may include, for example, first capability information. That is, the terminal device can send first capability information to the network device. The first capability information can be used to indicate whether the terminal device supports a radio link failure event prediction function and / or to indicate whether the terminal device supports the function of triggering conditional handover before the handover conditions associated with any conditional LTM candidate cell are met. The radio link failure event prediction function can be an AI-based radio link failure event prediction function.

[0268] It should be noted that the terminal device's ability to trigger conditional handover before the handover conditions associated with any conditional LTM candidate cell are met can also be called the conditional LTM early handover function.

[0269] Example 2

[0270] Example 2 can be applied to Scenario 2. Scenario 2 addresses the conditional LTM switching scenario. In Example 2, the first event is related to conditional LTM switching. The preset behavior is also related to conditional LTM switching.

[0271] In Example 2, the terminal device can initiate a handover process before the handover conditions associated with the conditional LTM candidate cell are met. This can effectively avoid premature or late handover caused by unreasonable configuration during the LTM handover process, improve the success rate of LTM handover, and optimize the terminal device throughput and user experience.

[0272] The first event in Example 2

[0273] In Example 2, the first event may include, for example, the terminal device predicting at the eighth time that at least one of the conditional LTM candidate cells among the five time-duration cells will meet the handover condition. Here, the eighth time refers to the current time of the terminal device.

[0274] In other words, in Embodiment 2, the first event may include the terminal device predicting that the handover conditions associated with at least one conditional LTM candidate cell will be met in the future. That is, if the terminal device predicts that the handover conditions associated with at least one conditional LTM candidate cell will be met in the future, the terminal device may perform a preset action.

[0275] In some embodiments, the fifth duration can be used to indicate the duration for the terminal device to predict whether the handover conditions associated with any conditional LTM candidate cell are met. For example, the fifth duration can be used to indicate the maximum duration for the terminal device to predict whether the handover conditions associated with any conditional LTM candidate cell are met. In other words, the fifth duration can be used to indicate the maximum time the terminal device can predict after which any conditional LTM candidate cell will meet the handover conditions associated with that conditional LTM candidate cell.

[0276] It should be noted that the fifth duration can satisfy one or more of the following: predefined, preconfigured, or configured by the network device.

[0277] It should be noted that the handover conditions associated with at least one conditional LTM candidate cell can be met at the same or different times. The earliest time when the handover conditions associated with at least one conditional LTM candidate cell are met can be any time within the fifth time period.

[0278] Preset behavior in Example 2

[0279] In Example 2, the preset behavior may include the terminal device selecting one cell from one or more conditional LTM candidate cells to initiate a handover process.

[0280] To facilitate the explanation of the preset behavior, the following sections will explain when the terminal device initiates the handover process and how the terminal device selects the cell to initiate the handover process.

[0281] When the terminal device initiates the handover process

[0282] The terminal device can initiate a handover procedure at a time before the predicted handover conditions associated with at least one conditional LTM candidate cell are met. In other words, the terminal device can initiate a handover procedure before the earliest time when the handover conditions associated with at least one conditional LTM candidate cell are met, which means initiating the conditional LTM handover procedure in advance.

[0283] As one possible implementation, the terminal device can execute the preset behavior at the moment the first event is met, i.e., the eighth moment. In other words, if the first event is met, the terminal device can immediately initiate the handover process. Triggering LTM handover when the first event is met is simple for the terminal device to implement.

[0284] As another possible implementation, the terminal device can initiate the handover process at any time within the fifth time period (including the eighth time period). Optionally, the terminal device can choose a time to initiate the handover process, depending on its implementation. Triggering LTM handover at any time allows for greater flexibility for the terminal device.

[0285] As another possible implementation, the timing of the handover procedure initiated by the terminal device can be calculated based on the eighth time point. For example, the terminal device can initiate the handover procedure at a certain time after the eighth time point. It is understandable that after the eighth time point, the terminal device can wait for a certain period before initiating the handover procedure. Generally, waiting for a period after the first event is satisfied before triggering LTM handover can improve the measurement results of the LTM candidate cells. Therefore, initiating the handover procedure at a certain time interval after the eighth time point can increase the probability of a successful handover.

[0286] As another possible implementation, the timing of the handover procedure initiated by the terminal device can be calculated based on the fifth time interval. For example, the terminal device can initiate the handover procedure a certain time before the arrival of the fifth time interval. It is understandable that after the eighth time interval, the terminal device can wait for a period of time before initiating the handover procedure a certain time before the arrival of the fifth time interval. Generally, waiting a period of time after the first event is satisfied before triggering the LTM handover judgment can improve the measurement results of the LTM candidate cells. Therefore, initiating the handover procedure a certain time before the arrival of the fifth time interval can increase the probability of a successful handover.

[0287] As another possible implementation, the time when the terminal device initiates the handover procedure can be determined based on the measurement results of the serving cell. For example, the time when the terminal device initiates the handover procedure can be the ninth time. Specifically, at the ninth time, the beam measurement result of the terminal device's current serving beam is less than or equal to a sixth threshold, or the beam measurement result corresponding to the best beam of the terminal device's current serving cell is less than or equal to a seventh threshold, or the cell measurement result of the terminal device's current serving cell is less than or equal to an eighth threshold. The ninth time is equal to the eighth time or is a time after the eighth time. The sixth, seventh, or eighth thresholds are positive numbers.

[0288] It should be noted that if a terminal device has more than one serving beam, then the terminal device's current serving beam can be the terminal device's current best serving beam.

[0289] It should be noted that the sixth, seventh, or eighth threshold can satisfy one or more of the following: predefined, preconfigured, or configured by the network device.

[0290] How does the terminal device select the cell to initiate the handover procedure?

[0291] Terminal devices can select one conditional LTM candidate cell from one or more conditional LTM candidate cells to initiate a handover process.

[0292] As one possible implementation, the terminal device can initiate a handover procedure from one of the conditional LTM candidate cells that meets the first event. That is, the terminal device selects one of the conditional LTM candidate cells that it predicts will meet the handover conditions in the future. For example, the terminal device can choose any one of the conditional LTM candidate cells that meets the first event to initiate the handover procedure, or it can choose the cell with the best cell measurement result at time eight among the conditional LTM candidate cells that meets the first event to initiate the handover procedure, or a third cell that is a conditional LTM candidate cell that meets the first event and whose best beam measurement result at time eight is the best among all the beam measurement results corresponding to the conditional LTM candidate cells that meet the first event.

[0293] As another possible implementation, the cell initiating the handover procedure by the terminal device can be one of the conditional LTM candidate cells that meets preset conditions. These preset conditions can be, for example, the fifth condition described below. The fifth condition can be related to the handover conditions. For example, the fifth condition is either that the handover conditions associated with the expected conditional LTM candidate cell will be met within the fifth time period, or that the time at which the expected handover conditions associated with the expected conditional LTM candidate cell are met is shortest from the ninth time period.

[0294] As another possible implementation, the terminal device can select a cell that meets preset conditions to initiate the handover process. These preset conditions may include a first condition, a second condition, or a fourth condition. The first, second, and fourth conditions have already been explained previously and will not be repeated here.

[0295] As another possible implementation, the terminal device can select any conditional LTM candidate cell to initiate the handover process.

[0296] The timing of the handover procedure initiated by the terminal device and the conditions for the terminal device to select LTM candidate cells to initiate the handover procedure, as described above, can be arbitrarily combined. For ease of understanding, examples of preset behaviors are provided below. Preset behaviors may include behavior 2.1 or behavior 2.2.

[0297] Action 2.1: At the eighth time, the terminal device initiates a handover procedure to an LTM candidate cell that meets the conditions of the first event. It is understood that while the terminal device is evaluating whether the handover conditions associated with one or more LTM candidate cells are met, as long as the terminal device predicts that the handover conditions associated with at least one of the one or more LTM candidate cells are met, the terminal device can immediately (e.g., at the eighth time) initiate a handover procedure to an LTM candidate cell that meets the conditions of the first event. If there is more than one LTM candidate cell that meets the conditions of the first event, the terminal device will select one of the cells to initiate the handover procedure. The method for selecting the cell is described above and will not be repeated here.

[0298] In behavior 2.1, the terminal device behavior is simple. By using prediction functions (such as AI prediction functions), the LTM switching process can be initiated in advance, effectively avoiding scenarios where the switching is too late.

[0299] Action 2.2: Upon reaching the ninth time, if at least one of the conditional LTM candidate cells satisfies the fifth condition, the terminal device initiates a handover procedure to the conditional LTM candidate cell that satisfies the fifth condition. The ninth time is equal to the eighth time or is a time after the eighth time. Furthermore, at the ninth time, the beam measurement result of the terminal device's current serving beam is less than or equal to the sixth threshold, or the beam measurement result corresponding to the best beam of the terminal device's current serving cell is less than or equal to the seventh threshold, or the cell measurement result of the terminal device's current serving cell is less than or equal to the eighth threshold. The fifth condition is either the handover condition associated with the expected conditional LTM candidate cell will be satisfied within the fifth time period, or the time at which the handover condition associated with the expected conditional LTM candidate cell is satisfied is the shortest from the ninth time.

[0300] In other words, behavior 2.2 can be: if the beam measurement result of the current serving beam of the terminal device at the ninth time is less than or equal to the sixth threshold, or the beam measurement result corresponding to the best beam of the current serving cell of the terminal device at the ninth time is less than or equal to the seventh threshold, or the cell measurement result of the current serving cell of the terminal device at the ninth time is less than or equal to the eighth threshold, the terminal device can initiate a handover procedure to the conditional LTM candidate cell that meets the fifth condition.

[0301] It is understandable that, in Action 2.2, during the period when the terminal device evaluates whether the handover conditions associated with one or more LTM candidate cells are met, even if the terminal device predicts that the handover conditions associated with at least one LTM candidate cell will be met after the fifth time interval, the terminal device will not necessarily immediately (e.g., at the eighth time interval) initiate a handover procedure to the LTM candidate cell that meets the fifth condition. Specifically, it is necessary to determine whether the beam measurement result of the terminal device's current serving beam at the eighth time interval is less than or equal to the sixth threshold, or whether the beam measurement result corresponding to the best beam of the terminal device's current serving cell at the eighth time interval is less than or equal to the seventh threshold, or whether the cell measurement result of the terminal device's current serving cell at the eighth time interval is less than or equal to the eighth threshold. If, at the eighth time interval, the beam measurement result of the terminal device's current serving beam is less than or equal to the sixth threshold, or the beam measurement result corresponding to the best beam of the terminal device's current serving cell is less than or equal to the seventh threshold, or the cell measurement result of the terminal device's current serving cell is less than or equal to the eighth threshold, then the ninth time interval is equal to the eighth time interval, and the terminal device immediately initiates a handover procedure to the LTM candidate cell that meets the fifth condition. If, at time eight, the beam measurement result of the current serving beam of the terminal device is greater than the sixth threshold, or the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is greater than the seventh threshold, or the cell measurement result of the current serving cell of the terminal device is greater than the eighth threshold, then time nine is later than time eight. That is, the terminal device needs to wait until time nine (i.e., time nine) after the beam measurement result of the current serving beam is less than or equal to the sixth threshold, or the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the seventh threshold, or the cell measurement result of the current serving cell of the terminal device is less than or equal to the eighth threshold before initiating a handover procedure to the LTM candidate cell that meets the fifth condition.

[0302] For behavior 2.2, the behavior of the terminal device performing LTM handover in advance not only considers the prediction measurement results of LTM candidate cells, but also the beam measurement results of the current serving beam, the cell measurement results of the current serving cell, or the beam measurement results of the current serving cell. The former can avoid the scenario of handover being too late, and the latter can avoid the scenario of handover being too early. This method can further improve the success probability of handover and optimize system performance.

[0303] In Embodiment 2, the configuration information may include third configuration information. That is, the network device may send third configuration information to the terminal device. The third configuration information may be related to the first event and / or a preset behavior. In other words, the third configuration information can be used to configure parameters related to the preset behavior and / or the first event in Embodiment 2.

[0304] For example, the third configuration information may include a tenth parameter and / or an eleventh parameter. The tenth parameter may be used to indicate the value of the fifth duration. The eleventh parameter may be used to indicate the value of the sixth threshold, the seventh threshold, or the eighth threshold.

[0305] Optionally, the third configuration information may include a tenth parameter. For example, if the preset behavior includes behavior 2.1, the third configuration information may include a tenth parameter.

[0306] Optionally, the third configuration information may include the tenth parameter and the eleventh parameter. For example, if the preset behavior includes behavior 2.2, the third configuration information may include the tenth parameter and the eleventh parameter.

[0307] As described above, the terminal device can send capability information to the network device. This capability information may include second capability information. That is, the terminal device can send second capability information to the network device. This second capability information indicates whether the terminal device supports the function of triggering conditional handover before the handover conditions associated with any conditional LTM candidate cell are met. For example, the second capability information can be used to indicate whether the terminal device supports measurement prediction behavior in conditional LTM handover scenarios and whether the terminal device supports the function of triggering conditional handover before the handover conditions associated with any conditional LTM candidate cell are met. The measurement prediction behavior in conditional LTM handover scenarios can be measurement prediction behavior in LTM handover scenarios based on AI technology.

[0308] Example 3

[0309] Example 3 can be applied to Scenario 3. Scenario 3 can be applied to unconditional LTM handover scenarios (in unconditional LTM handover scenarios, the network device triggers the terminal device to perform LTM handover by sending a special MAC CE command). In Example 3, the first event is related to the radio link failure event predicted by the terminal device. The preset behavior is related to the radio link failure event or handover predicted by the terminal device.

[0310] In Embodiment 3, the terminal device can predict the impending wireless link failure event before it actually occurs. Specifically, the first event may include the terminal device predicting that it will trigger a wireless link failure in the serving cell. On one hand, this technical solution can largely prevent actual wireless link failures, thereby avoiding data interruptions and improving user throughput. On the other hand, after predicting a potential wireless link failure event, the terminal device can report a warning to the network device, which can assist the network device in adjusting its strategies in a timely manner, such as changing the RLF monitoring beamset or triggering LTM handover command transmission, which can also prevent the actual occurrence of the wireless link failure event to some extent.

[0311] The first event in Example 3 will be described in detail below.

[0312] The first event in Example 3

[0313] In Embodiment 3, the first event may include: the terminal device storing cell configurations of one or more valid LTM candidate cells, and at the tenth time, the terminal device predicts that at the eleventh time after the sixth time interval, the terminal device will trigger a radio link failure in the serving cell. Here, the tenth time interval refers to the current time of the terminal device.

[0314] In some embodiments, the eleventh time can be the time when the terminal device predicts the RLF event will be triggered. In other words, the terminal device predicts that it will trigger the RLF event in the serving cell at the eleventh time, or the terminal device predicts that the probability or confidence level of triggering the RLF event in the serving cell at the eleventh time is greater than a threshold, such as a threshold of 90%.

[0315] In some embodiments, the sixth duration can be used to indicate the duration for which the terminal device predicts a wireless link failure event. Exemplarily, the sixth duration can be used to indicate the maximum duration for which the terminal device predicts a wireless link failure event, such as the maximum temporal prediction duration for which the terminal device performs wireless link failure event prediction based on AI technology. In other words, the sixth duration can be used to indicate the maximum time the terminal device can predict before a wireless link failure event will occur.

[0316] It should be noted that the sixth duration can satisfy one or more of the following: predefined, preconfigured, or configured by the network device.

[0317] Preset behavior in Example 3

[0318] In Example 3, the preset behavior can be implemented using either Method 1 or Method 2. These will be explained below.

[0319] Method 1 for implementing preset behavior

[0320] In one implementation method, the default behavior may include: the terminal device sending fifth information to the network device. It should be noted that the network device sending the configuration information and the network device receiving the fifth information may be the same or different. It should also be noted that the network device receiving the capability information and the network device receiving the fifth information may be the same or different.

[0321] The fifth piece of information can be used to indicate information related to a predicted radio link failure event triggered by the terminal device in the serving cell. In implementation one, the terminal device can send the fifth piece of information as long as it predicts that the terminal device will trigger a radio link failure in the serving cell at some future time. That is, if the first event is met, the terminal device can send the fifth piece of information.

[0322] It is understandable that after predicting a possible wireless link failure event, the terminal device can report a warning to the network device through the fifth information, which can help the network device adjust its strategy in a timely manner, such as changing the RLF monitoring beam set or triggering the LTM handover command. This can also prevent the wireless link failure event from actually occurring to a certain extent.

[0323] The time when the fifth message is sent can be the time before the predicted radio link failure event occurs in the serving cell (e.g., the eleventh time).

[0324] As one possible implementation, the fifth message can be sent at the moment the first event is satisfied. That is, at the tenth moment, the terminal device can send the fifth message. This implementation is simple and can provide early warning to network devices.

[0325] As another possible implementation, the terminal device may choose to send the fifth information at any time between the tenth time and the predicted time when the radio link failure event occurs in the serving cell (which may include the tenth time). The time for sending the fifth information can be determined by the implementation of the terminal device.

[0326] As another possible implementation, the time for sending the fifth message can be determined based on the tenth time. For example, the time for sending the fifth message could be the twelfth time. The twelfth time can be a time after the tenth time, and the time interval between the twelfth time and the tenth time is equal to the seventh duration. The seventh duration is less than the sixth duration.

[0327] It should be noted that the seventh duration can satisfy one or more of the following: predefined, preconfigured, or configured by the network device.

[0328] As another possible implementation, the timing of sending the fifth message can be determined based on the predicted time when a radio link failure event occurs in the serving cell. For example, the timing of sending the fifth message can be a time after the tenth time, and the time interval between this time and the predicted time when the terminal device triggers a radio link failure event in the serving cell is equal to the tenth duration. Here, the tenth duration is less than the sixth duration.

[0329] It should be noted that the tenth duration can satisfy one or more of the following: predefined, preconfigured, or configured by the network device.

[0330] As another possible implementation, the time for sending the fifth information can be a time that meets preset conditions. Preset conditions may include, for example, the beam measurement result of the current serving beam of the terminal device being less than or equal to a ninth threshold, or the beam measurement result corresponding to the best beam of the current serving cell of the terminal device being less than or equal to a tenth threshold, or the cell measurement result of the current serving cell of the terminal device being less than or equal to an eleventh threshold. For example, the time for sending the fifth information can be a thirteenth time. The thirteenth time is equal to the tenth time or is a time after the tenth time, and at the thirteenth time, the beam measurement result of the current serving beam of the terminal device is less than or equal to the ninth threshold, or the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the tenth threshold, or the cell measurement result of the current serving cell of the terminal device is less than or equal to the eleventh threshold. Wherein, the ninth threshold, the tenth threshold, or the eleventh threshold are positive numbers.

[0331] It should be noted that the ninth, tenth, or eleventh thresholds can satisfy one or more of the following: predefined, preconfigured, or configured by the network device.

[0332] In one implementation of the preset behavior in Embodiment 3, the configuration information may include fourth configuration information. That is, the terminal device can receive fourth configuration information sent by the network device. The fourth configuration information is related to the first event and / or the preset behavior. In other words, the fourth configuration information can be used to configure the parameters related to the first event and / or the preset behavior in Embodiment 3.

[0333] Optionally, the fourth configuration information may include one or more of the following: a twelfth parameter, a thirteenth parameter, and a fourteenth parameter. The twelfth parameter indicates the value of the sixth duration. The thirteenth parameter indicates the value of the seventh duration. The fourteenth parameter indicates the value of the ninth threshold, the tenth threshold, or the eleventh threshold.

[0334] For example, the fourth configuration information may include a twelfth parameter. For instance, if the first event includes the terminal device storing a valid cell configuration of one or more LTM candidate cells, and the terminal device predicts at the eleventh time after the sixth time period that the terminal device will trigger a radio link failure in the serving cell, the fourth configuration information may include a twelfth parameter.

[0335] For example, the fourth configuration information may include a twelfth parameter and a thirteenth parameter. For instance, if the first event includes the terminal device storing a valid cell configuration for one or more LTM candidate cells, and at the tenth moment the terminal device predicts that at the eleventh moment after the sixth duration, the terminal device will trigger a radio link failure in the serving cell, and a preset behavior is executed at the twelfth moment, the fourth configuration information may include the twelfth parameter and the thirteenth parameter.

[0336] For example, the fourth configuration information may include the twelfth parameter and the fourteenth parameter. For instance, if the first event includes the terminal device storing a valid cell configuration for one or more LTM candidate cells, and at the tenth time the terminal device predicts that at the eleventh time after the sixth time interval, the terminal device will trigger a radio link failure in the serving cell, and the preset behavior is executed at the thirteenth time interval, the fourth configuration information may include the twelfth parameter and the fourteenth parameter.

[0337] Method 2 for implementing preset behavior

[0338] In implementation method two, the preset behavior may include: the terminal device initiating a handover procedure. That is, if the terminal device predicts that it will trigger a radio link failure in the serving cell in the future, the terminal device can initiate a handover procedure.

[0339] As mentioned above, in unconditional LTM handover scenarios, the terminal device needs to wait for instructions from the network device (e.g., a handover command) and initiate the handover process according to the network device's instructions. However, in this application, the terminal device does not need to initiate the handover process according to the network device's instructions. Instead, it can determine and initiate the handover process itself based on the terminal device's prediction that the terminal device will trigger a radio link failure in the serving cell in the future.

[0340] Understandably, terminal devices will switch to other cells before a potential wireless link failure event is triggered, thereby avoiding a real wireless link failure in the original serving cell and thus preventing data interruption caused by the wireless link failure, thus improving the user's throughput experience.

[0341] To facilitate the explanation of the preset behavior, the following sections will explain when the terminal device initiates the handover process and how the terminal device selects the cell to initiate the handover process.

[0342] When the terminal device initiates the handover process

[0343] The handover procedure can be initiated by the terminal device at a time before the predicted time of the radio link failure event in the serving cell. In other words, the terminal device can initiate the handover procedure before the predicted time of the radio link failure event in the serving cell (e.g., the eleventh time).

[0344] As one possible implementation, the terminal device can initiate the handover process at the moment the first event is met. That is, at the tenth moment, the terminal device can initiate the handover process. In other words, if the first event is met, the terminal device can immediately initiate the handover process. Triggering the handover process when the first event is met is simple for the terminal device to implement.

[0345] As another possible implementation, the timing of the handover procedure initiated by the terminal device can be determined based on the tenth time. For example, the terminal device can initiate the handover procedure at the fourteenth time. The time interval between the fourteenth time and the tenth time is the eighth duration. The eighth duration is less than the sixth duration. The fourteenth time can be equal to or later than the tenth time. It is understood that after the first event, the terminal device can wait for the eighth duration before initiating the handover procedure. Generally, waiting for a period after the first event is satisfied before triggering the handover can improve the measurement results of the LTM candidate cells; therefore, initiating the handover procedure at the fourteenth time can increase the probability of a successful handover.

[0346] It should be noted that the eighth duration can satisfy one or more of the following: predefined, preconfigured, or configured by the network device.

[0347] As another possible implementation, the timing of the handover procedure initiated by the terminal device can be determined based on the eleventh time. For example, the terminal device can initiate the handover procedure at the fifteenth time. The time interval between the eleventh and fifteenth times is the ninth duration, where the ninth duration is less than the sixth duration. It is understood that after the first event is satisfied, the terminal device can wait for a period of time before initiating the handover procedure at the fifteenth time. Generally, waiting for a period of time after the first event is satisfied before triggering the LTM handover judgment can improve the measurement results of the LTM candidate cells; therefore, initiating the handover procedure at the fifteenth time can increase the probability of a successful handover.

[0348] It should be noted that the ninth duration can satisfy one or more of the following: predefined, preconfigured, or configured by the network device.

[0349] As another possible implementation, the terminal device can initiate the handover procedure at any time between the tenth and eleventh times (including the tenth time). For example, the terminal device can initiate the handover procedure at the sixteenth time. Here, the sixteenth time is any time between the tenth time and the predicted time when the terminal device triggers a radio link failure in the serving cell (including the tenth time). Optionally, the terminal device can choose a time to initiate the handover procedure, depending on its implementation. Triggering LTM handover at any time allows for greater flexibility for the terminal device.

[0350] For ease of understanding, Table 3 shows the various moments that may be related to Embodiment 3 (including moments related to Implementation Method 1 and Implementation Method 2 of the preset behavior).

[0351] Table 3

[0352] It should be noted that some of the contents in Table 3 can be implemented independently. For example, Example 3 may only be related to the tenth and eleventh times, and not to other times. Similarly, Example 3 may only be related to the tenth, eleventh, and fourteenth times, and not to other times.

[0353] As another possible implementation, the terminal device can initiate the handover process when preset conditions are met. These preset conditions could include, for example, the sixth, eighth, or ninth condition. That is, if the sixth, eighth, or ninth condition is met, the terminal device can immediately initiate the handover process.

[0354] In this application, the sixth condition can be related to the measurement results of the LTM candidate cells. That is, the time to initiate the handover procedure can be determined based on the measurement results of the LTM candidate cells. For example, the sixth condition is that the beam measurement result corresponding to the best beam of the LTM candidate cell is greater than the twelfth threshold or the cell-level measurement result corresponding to the LTM candidate cell is greater than the thirteenth threshold. Wherein, the twelfth or thirteenth threshold is a positive number.

[0355] It should be noted that the twelfth or thirteenth threshold can satisfy one or more of the following: predefined, preconfigured, or configured by the network device.

[0356] When the sixth condition is met, the terminal device initiates the handover process. This can be done when the measurement results of the LTM candidate cell are relatively good, thereby improving the handover success rate.

[0357] In this application, the eighth condition can be related to the measurement results of the serving cell. That is, the timing of initiating the handover procedure can be determined based on the measurement results of the serving cell. For example, the eighth condition is that the beam measurement result of the current serving beam of the terminal device is less than or equal to the fourteenth threshold, or the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fifteenth threshold, or the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the sixteenth threshold. Wherein, the fourteenth, fifteenth, or sixteenth thresholds are positive numbers.

[0358] It should be noted that the fourteenth, fifteenth, or sixteenth thresholds can satisfy one or more of the following: predefined, preconfigured, or configured by the network device.

[0359] When the eighth condition is met, the terminal device initiates the handover process. This can be done when the measurement results of the serving cell are poor, thus avoiding premature handover caused by initiating handover when the measurement results of the serving cell are good.

[0360] In this application, the ninth condition can be related to the measurement results of the serving cell and the LTM candidate cell. That is, the timing for initiating the handover procedure can be determined based on the measurement results of the LTM candidate cell and the measurement results of the serving cell.

[0361] The ninth condition may include, for example, any one of the ninth conditions 1 to 12.

[0362] Ninth condition 1: The beam measurement result corresponding to the best beam of the LTM candidate cell is greater than the twelfth threshold, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the fourteenth threshold.

[0363] Ninth condition 2: Or the beam measurement result corresponding to the best beam of the LTM candidate cell is greater than the twelfth threshold, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fifteenth threshold.

[0364] Condition 3: The beam measurement result corresponding to the best beam of the LTM candidate cell is greater than the twelfth threshold, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the sixteenth threshold.

[0365] Ninth condition 4: The beam measurement result corresponding to the best beam of the LTM candidate cell is the best among the beam measurement results corresponding to all LTM candidate cells, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the fourteenth threshold.

[0366] Ninth condition 5: The beam measurement result corresponding to the best beam of the LTM candidate cell is the best among all the beam measurement results corresponding to the LTM candidate cells, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fifteenth threshold.

[0367] Condition 6: The beam measurement result corresponding to the best beam of the LTM candidate cell is the best among all the beam measurement results corresponding to the LTM candidate cells, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the sixteenth threshold.

[0368] Condition 7: The cell-level measurement result corresponding to the LTM candidate cell is greater than the thirteenth threshold, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the fourteenth threshold.

[0369] Ninth condition 8: The cell-level measurement result corresponding to the LTM candidate cell is greater than the thirteenth threshold, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fifteenth threshold.

[0370] Condition 9: The cell-level measurement result corresponding to the LTM candidate cell is greater than the thirteenth threshold, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the sixteenth threshold.

[0371] Ninth condition 10: The cell-level measurement result corresponding to the LTM candidate cell is the best among all cell-level measurement results corresponding to the LTM candidate cells, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the fourteenth threshold.

[0372] Ninth condition 11: The cell-level measurement result corresponding to the LTM candidate cell is the best among all cell-level measurement results corresponding to the LTM candidate cells, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fifteenth threshold.

[0373] Ninth condition 12: The cell-level measurement result corresponding to the LTM candidate cell is the best among all the cell-level measurement results corresponding to the LTM candidate cells, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the sixteenth threshold.

[0374] It should be noted that if the terminal device has more than one serving beam, then the current serving beam of the terminal device in the ninth condition above can be the current best serving beam of the terminal device.

[0375] The ninth condition considers not only the measurement results of LTM candidate cells but also the measurement results of the serving cell. By determining the timing of initiating the cell handover procedure based on the ninth condition, the handover can be prevented from being executed too early or too late, increasing the probability of successful LTM handover and optimizing terminal device throughput and user experience.

[0376] For ease of understanding, Table 4 shows the various conditions that may be associated with Example 3.

[0377] Table 4

[0378] It should be noted that some of the contents in Table 4 can be implemented independently. For example, Example 3 may only be related to the sixth condition and not to the other conditions. Similarly, Example 1 may only be related to the sixth and eighth conditions and not to the other conditions.

[0379] How does the terminal device select the cell to initiate the handover procedure?

[0380] Terminal devices can select one conditional LTM candidate cell from one or more conditional LTM candidate cells to initiate a handover process.

[0381] As one possible implementation, the terminal device can select any LTM candidate cell to initiate the handover procedure. Specifically, the terminal device can choose one LTM candidate cell to initiate the handover procedure based on its own implementation. This implementation method is relatively flexible.

[0382] As another possible implementation, the terminal device can select one of the LTM candidate cells that meets preset conditions to initiate a handover procedure. These preset conditions may include a sixth, seventh, or ninth condition. The seventh condition can be that the beam measurement result corresponding to the best beam of the LTM candidate cell is the best among all the beam measurement results corresponding to all LTM candidate cells, or that the cell-level measurement result corresponding to the LTM candidate cell is the best among all the cell-level measurement results corresponding to all LTM candidate cells. See above for details on the sixth and ninth conditions.

[0383] As one possible implementation, the terminal device can select a candidate cell from LTM candidate cells that meet preset conditions to initiate a handover procedure. The preset conditions may include a sixth condition, a seventh condition, or a ninth condition. In some embodiments, the terminal device can select one of the following cells to initiate the handover procedure (a first method of cell selection): any one of the LTM candidate cells that meet the sixth condition, or any one of the LTM candidate cells that meet the seventh condition, or any one of the LTM candidate cells that meet the ninth condition. In other embodiments, the terminal device can select one of the following cells to initiate the handover procedure (a second method of cell selection): the cell with the best cell-level measurement result among the LTM candidate cells that meet the sixth condition, or a fourth cell, which is an LTM candidate cell and meets the sixth condition, and the beam measurement result corresponding to the best beam of the fourth cell is the best among all the beam measurement results corresponding to the LTM candidate cells that meet the sixth condition; or, the cell with the best cell-level measurement result among the LTM candidate cells that meet the ninth condition, or a fifth cell, which is an LTM candidate cell and meets the ninth condition, and the beam measurement result corresponding to the best beam of the fifth cell is the best among all the beam measurement results corresponding to the LTM candidate cells that meet the ninth condition. For details regarding the sixth, seventh, or ninth conditions, please refer to the above text.

[0384] The terminal device selects an LTM candidate cell that meets the sixth condition to initiate the handover procedure. This allows it to switch to a cell with better measurement results among the LTM candidate cells, thereby improving the handover success rate. Furthermore, the sixth condition has high reliability.

[0385] The terminal device selects an LTM candidate cell that meets the seventh condition to initiate a handover process. It can hand over to the cell with the best measurement result among one or more LTM candidate cells, thereby improving the handover success rate.

[0386] Terminal equipment can initiate a handover process by selecting an LTM candidate cell that meets the ninth condition. This allows the device to switch to a cell with better LTM candidate cell measurement results when the measurement results of the serving cell are poor, thereby avoiding premature handover and improving the handover success rate.

[0387] Based on the time when the terminal device initiates the handover procedure and the LTM candidate cell selected by the terminal device to initiate the handover procedure, the preset behavior may include: the terminal device initiates the handover procedure to the selected LTM candidate cell at the corresponding time.

[0388] The timing of the handover procedure initiated by the terminal device and the LTM candidate cell selected by the terminal device to initiate the handover procedure, as described above, can be arbitrarily combined. For ease of understanding, examples of preset behaviors are given below. Preset behaviors can include any one of behaviors 3.1 to 3.7.

[0389] Action 3.1: If the sixth condition is met, the terminal device initiates a handover procedure to an LTM candidate cell that meets the sixth condition. If there is more than one LTM candidate cell that meets the sixth condition, the terminal device will select one of the cells to initiate the handover procedure. The two methods for selecting a cell are described above and will not be repeated here. For example, the execution time of Action 3.1 can be the time when the sixth condition is met. The time when the sixth condition is met can be the tenth time or a time after the tenth time.

[0390] Action 3.1, which checks the sixth condition, can improve the success rate of early LTM handover and has high reliability. If the first event is met, LTM handover can be delayed, giving the terminal device more flexibility, since the sixth condition is not necessarily met simultaneously with the first event. The terminal device can wait until the sixth condition is met before triggering LTM handover.

[0391] Action 3.2: If the first event is satisfied, the terminal device initiates a handover procedure to the LTM candidate cell that meets the seventh condition. In other words, if the first event is satisfied, the terminal device can immediately initiate a handover procedure to the LTM candidate cell that meets the seventh condition. For example, the execution time of Action 3.2 can be the time when the first event is satisfied, i.e., the tenth time.

[0392] Action 3.2 triggering the LTM switching judgment when the first event is met is simple to implement, and the additional judgment of the seventh condition can improve the success rate of early LTM switching.

[0393] Action 3.3: If the eighth condition is met, the terminal device initiates a handover procedure to an LTM candidate cell that meets the sixth condition, or the terminal device initiates a handover procedure to an LTM candidate cell that meets the seventh condition. In other words, if the eighth condition is met, the terminal device can immediately initiate a handover procedure to an LTM candidate cell that meets the sixth condition, or the terminal device can immediately initiate a handover procedure to an LTM candidate cell that meets the seventh condition. For example, the time when Action 3.3 is executed can be the time when the eighth condition is met. The time when the eighth condition is met can be the tenth time or a time after the tenth time. If there is more than one LTM candidate cell that meets the sixth condition, the terminal device will select one of the cells to initiate a handover procedure. The two methods for selecting a cell are described above and will not be repeated here.

[0394] Behavior 3.3 allows for initiating a handover process when the serving cell's measurement results are poor, thus avoiding premature handover caused by initiating the process when the serving cell's measurement results are good. Furthermore, it allows for not immediately triggering LTM handover when the first event is met, providing more flexibility to the terminal device, as the eighth condition is not necessarily met simultaneously with the first event; the terminal device can wait until the eighth condition is met before triggering LTM handover.

[0395] Action 3.4: If the ninth condition is met, the terminal device initiates a handover procedure to an LTM candidate cell that meets the ninth condition. If there is more than one LTM candidate cell that meets the ninth condition, the terminal device will select one of the cells to initiate the handover procedure. The two methods for selecting a cell are described above and will not be repeated here. For example, the execution of Action 3.4 can be at the moment the ninth condition is met. The moment the ninth condition is met can be at the tenth moment or a moment after the tenth moment.

[0396] Behavior 3.4 allows for initiating a handover procedure even when the serving cell's measurement results are poor and the LTM candidate cell's measurement results are good. This avoids premature handover caused by initiating the handover procedure when the serving cell's measurement results are good, and also avoids handover failure caused by poor LTM candidate cell measurement results. Furthermore, LTM handover can be delayed until the first event is met, providing more flexibility for the terminal device, as the ninth condition is not necessarily met simultaneously with the first event. The terminal device can wait until the ninth condition is met before triggering LTM handover.

[0397] Action 3.5: Upon reaching the fourteenth time, the terminal device initiates a handover procedure to an LTM candidate cell that meets the sixth or seventh condition, wherein the time interval between the fourteenth time and the tenth time is an eighth duration. In other words, eight durations after the first event is satisfied, the terminal device may initiate a handover procedure to an LTM candidate cell that meets the sixth or seventh condition.

[0398] Generally, waiting a period of time after the first event is met before triggering the LTM handover decision can improve the measurement results of LTM candidate cells. Therefore, behavior 3.5, waiting for a period of time, can increase the probability of meeting the sixth or seventh condition. Furthermore, calculating the fourteenth time based on the tenth time, i.e., determining the fourteenth time based on the current time, is easier for terminal equipment to implement. Additionally, further judging the sixth or seventh condition can improve the success rate of early LTM handover execution.

[0399] Action 3.6: Upon reaching the fifteenth time, the terminal device initiates a handover procedure to an LTM candidate cell that meets the sixth or seventh condition, wherein the time interval between the eleventh and fifteenth times is the ninth duration. In other words, nine durations prior to the predicted time when the terminal device triggers a radio link failure in the serving cell, the terminal device can initiate a handover procedure to an LTM candidate cell that meets the sixth or seventh condition.

[0400] Generally, waiting a period of time after the first event is met before triggering the LTM handover decision can improve the measurement results of the LTM candidate cells. Therefore, behavior 3.6, waiting for a period of time, can increase the probability of meeting the sixth or seventh condition. Furthermore, calculating the fifteenth time based on the predicted time when the terminal device triggers radio link failure, i.e., determining the fifteenth time based on the current time, is easier for the terminal device to implement. Additionally, further judging the sixth or seventh condition can improve the success rate of performing LTM handover earlier.

[0401] Action 3.7: Upon reaching the sixteenth time, the terminal device initiates a handover procedure to an LTM candidate cell that satisfies either the sixth or seventh condition. The sixteenth time is any time between the tenth and eleventh times. In other words, at any time between the current time and the predicted time after the current time when the terminal device triggers a radio link failure in the serving cell, the terminal device can initiate a handover procedure to an LTM candidate cell that satisfies either the sixth or seventh condition. The sixteenth time can be determined based on the implementation of the terminal device.

[0402] In behavior 3.7, the terminal device can independently determine the timing of initiating the handover process, thus increasing its flexibility. Furthermore, additional checks on the sixth or seventh condition can improve the success rate of early LTM handover execution.

[0403] In Embodiment 3, the configuration information may include fifth configuration information. That is, the terminal device can receive fifth configuration information sent by the network device. The fifth configuration information may be related to the first event and / or a preset behavior. In other words, the fifth configuration information can be used to configure parameters related to the first event and / or the preset behavior in Embodiment 3.

[0404] For example, the fifth configuration information may include one or more of the following: the fifteenth parameter, the sixteenth parameter, the seventeenth parameter, the eighteenth parameter, the nineteenth parameter, the twentieth parameter, and the twenty-first parameter.

[0405] The fifteenth parameter is used to indicate the value of the twelfth threshold. For example, if the preset behavior includes behavior 3.1, the fifth configuration information may include the fifteenth parameter. If the sixth condition is that the beam measurement result corresponding to the best beam of the LTM candidate cell is greater than the twelfth threshold, the fifth configuration information may include the fifteenth parameter.

[0406] The sixteenth parameter is used to indicate the value of the thirteenth threshold. For example, if the preset behavior includes behavior 3.1, the fifth configuration information may include the sixteenth parameter. In behavior 3.1, the sixth condition is that the cell-level measurement result corresponding to the LTM candidate cell is greater than the thirteenth threshold.

[0407] The seventeenth parameter is used to indicate the value of the fourteenth threshold. For example, if the preset behavior includes behavior 3.3, the fifth configuration information may include the seventeenth parameter. In behavior 3.3, the eighth condition is that the beam measurement result of the current serving beam of the terminal device is less than or equal to the fourteenth threshold.

[0408] The eighteenth parameter is used to indicate the value of the fifteenth threshold. For example, if the preset behavior includes behavior 3.3, the fifth configuration information may include the eighteenth parameter. In behavior 3.3, the eighth condition is that the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fifteenth threshold.

[0409] The nineteenth parameter is used to indicate the value of the sixteenth threshold. For example, if the preset behavior includes behavior 3.3, the fifth configuration information may include the nineteenth parameter. In behavior 3.3, the eighth condition is that the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the sixteenth threshold.

[0410] The twentieth parameter is used to indicate the value of the eighth duration. For example, if the preset behavior includes behavior 3.5, the fifth configuration information may include the twentieth parameter.

[0411] The 21st parameter is used to indicate the value of the 9th duration. For example, if the preset behavior includes behavior 3.6, the 5th configuration information may include the 20th parameter.

[0412] When the preset behavior includes behavior 3.4, the fifth configuration information may include the fifteenth and seventeenth parameters, or the fifth configuration information may include the fifteenth and eighteenth parameters, or the fifth configuration information may include the fifteenth and nineteenth parameters, or the fifth configuration information may include the sixteenth and seventeenth parameters, or the fifth configuration information may include the sixteenth and eighteenth parameters, or the fifth configuration information may include the sixteenth and nineteenth parameters.

[0413] For example, if the ninth condition includes: the beam measurement result corresponding to the best beam of the LTM candidate cell is greater than the twelfth threshold, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the fourteenth threshold, the fifth configuration information may include: the fifteenth parameter and the seventeenth parameter.

[0414] For example, if the ninth condition includes: the beam measurement result corresponding to the best beam of the LTM candidate cell is greater than the twelfth threshold, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fifteenth threshold, the fifth configuration information may include: the fifteenth parameter and the eighteenth parameter.

[0415] For example, if the ninth condition includes: the beam measurement result corresponding to the best beam of the LTM candidate cell is greater than the twelfth threshold, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the sixteenth threshold, the fifth configuration information may include: the fifteenth parameter and the nineteenth parameter.

[0416] For example, if the ninth condition includes: the beam measurement result corresponding to the best beam of the LTM candidate cell is the best among the beam measurement results corresponding to all LTM candidate cells, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the fourteenth threshold, the fifth configuration information may include: the seventeenth parameter.

[0417] For example, if the ninth condition includes: the beam measurement result corresponding to the best beam of the LTM candidate cell is the best among all the beam measurement results corresponding to the LTM candidate cells, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fifteenth threshold, the fifth configuration information may include: the eighteenth parameter.

[0418] For example, if the ninth condition includes: the beam measurement result corresponding to the best beam of the LTM candidate cell is the best among all the beam measurement results corresponding to the LTM candidate cells, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the sixteenth threshold, the fifth configuration information may include: the nineteenth parameter.

[0419] For example, if the ninth condition includes: the cell-level measurement result corresponding to the LTM candidate cell is the best among all cell-level measurement results corresponding to the LTM candidate cells, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the fourteenth threshold, the fifth configuration information may include: the seventeenth parameter.

[0420] For example, if the ninth condition includes: the cell-level measurement result corresponding to the LTM candidate cell is the best among all cell-level measurement results corresponding to the LTM candidate cells, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fifteenth threshold, the fifth configuration information may include: the eighteenth parameter.

[0421] For example, if the ninth condition includes: the cell-level measurement result corresponding to the LTM candidate cell is the best among all cell-level measurement results corresponding to LTM candidate cells, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the sixteenth threshold, the fifth configuration information may include: the nineteenth parameter. For example, if the ninth condition includes: the cell-level measurement result corresponding to the LTM candidate cell is greater than the thirteenth threshold, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the fourteenth threshold, the fifth configuration information may include: the sixteenth parameter and the seventeenth parameter.

[0422] For example, if the ninth condition includes: the cell-level measurement result corresponding to the LTM candidate cell is greater than the thirteenth threshold, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fifteenth threshold, the fifth configuration information may include: the sixteenth parameter and the eighteenth parameter.

[0423] For example, if the ninth condition includes: the cell-level measurement result corresponding to the LTM candidate cell is greater than the thirteenth threshold, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the sixteenth threshold, the fifth configuration information may include: the sixteenth parameter and the nineteenth parameter.

[0424] In the second implementation of Embodiment 3, the terminal device can send the fifth information to the network device. It should be noted that the network device sending the configuration information and the network device receiving the fifth information can be the same or different.

[0425] The fifth piece of information can be used to indicate information that the terminal device has predicted will trigger a radio link failure in the serving cell. With this fifth piece of information, network devices can adjust their communication strategies to prevent radio link failure events from actually occurring.

[0426] For example, if a terminal device is unable to initiate a handover procedure before the predicted time when a radio link failure occurs in the serving cell (e.g., no LTM candidate cell meets the conditions for early handover initiation) or the handover fails, the terminal device can send a fifth message to the network device. As mentioned above, by initiating a handover procedure, the terminal device can prevent the radio link failure event from actually occurring; that is, the terminal device can adjust its communication strategy to avoid the actual occurrence of the radio link failure. When the terminal device is unable to initiate a handover procedure or the handover fails, the terminal device cannot prevent the actual occurrence of the radio link failure by adjusting its communication strategy. In this case, the terminal device sends a fifth message to "request assistance" from the network device to adjust its communication strategy, thereby minimizing the possibility of the radio link failure event actually occurring.

[0427] To facilitate understanding, the transmission of the fifth information in the second implementation of Embodiment 3 will be illustrated below with several examples.

[0428] For example, at the tenth time, if the terminal device predicts that no LTM candidate cell meets the sixth condition at any time before the terminal device triggers a radio link failure event in the serving cell, the terminal device sends the fifth information to the network device. That is, if none of the LTM candidate cells meet the sixth condition between the tenth and eleventh times, the terminal device can send the fifth information to the network device.

[0429] For example, at the tenth moment, if the terminal device predicts that no LTM candidate cell satisfies the ninth condition at any time before the terminal device triggers a radio link failure event in the serving cell, the terminal device sends the fifth information to the network device.

[0430] For example, if the first event is met, the terminal device sends a fifth message to the network device. That is, if the terminal device predicts an impending radio link failure, it can send a fifth message to the network device. In other words, regardless of whether the terminal device initiates a handover beforehand, it can send the fifth message to the network device. In this case, both the terminal device and the network device can adjust their communication strategies to avoid actual radio link failures, thereby minimizing the probability of such failures. For instance, in response to the first event being met, the terminal device can immediately send the fifth message to the network device. After waiting for a period of time after the first event is met, the measurement results of the serving cell may decrease. Therefore, sending the fifth message immediately upon the first event being met increases the success rate of the network device corresponding to the serving cell receiving the fifth message.

[0431] The following example, using any one of the preset behaviors 3.1 to 3.7, illustrates the sending of the fifth message.

[0432] If, under the preset behavior including behavior 3.1, the terminal device predicts that no LTM candidate cell meets the sixth condition between the tenth and eleventh time, the terminal device may send the fifth information. The fifth information may be sent at the tenth time.

[0433] Under the preset behavior including behavior 3.3, if the terminal device predicts that no LTM candidate cell meets the sixth condition or the serving cell cannot meet the eighth condition between the tenth and eleventh time, the terminal device may send the fifth information. The fifth information may be sent at the tenth time.

[0434] Action 3.4: If the terminal device predicts that the LTM candidate cell or serving cell cannot meet the ninth condition between the tenth and eleventh time, the terminal device may send the fifth information. The fifth information may be sent at the tenth time.

[0435] Action 3.5: If, at time fourteen, no LTM candidate cell satisfies the sixth or seventh condition, the terminal device may send the fifth message. The fifth message may be sent at time fourteen.

[0436] Action 3.6: If, at time 15, no LTM candidate cell satisfies the sixth or seventh condition, the terminal device may send the fifth message. The fifth message may be sent at time 15.

[0437] Action 3.7: Upon reaching the sixteenth time, if no LTM candidate cell satisfies the sixth or seventh condition, the terminal device may send the fifth information. The fifth information may be sent at the sixteenth time.

[0438] The fifth piece of information will be described in detail below. It should be noted that the description of the fifth piece of information below is valid throughout this application. That is, the technical solution regarding the fifth piece of information can be applied to either the first implementation of Embodiment 3 or the second implementation of Embodiment 3.

[0439] As one possible implementation, the fifth information may include the sixth and / or seventh information. The sixth information indicates that the terminal device predicts a future radio link failure in the serving cell. The seventh information indicates details related to the predicted radio link failure event.

[0440] Reporting the seventh information allows network devices to obtain detailed early warning information before the terminal device actually triggers a wireless link failure event, thereby assisting the network device to adjust its strategy in a timely manner. For example, the network device can trigger a timely handover command (such as Layer 3 handover or LTM handover) to change the terminal device to a different cell, thereby avoiding the terminal device from actually triggering a wireless link failure event and improving the user throughput experience.

[0441] The first implementation method of the seventh information is introduced below.

[0442] In the first implementation, the seventh information includes one or more of the following: beam identifier information corresponding to the beam with the best beam measurement result in the second beam set at the tenth time, actually measured by the terminal device; beam measurement result corresponding to the beam with the best beam measurement result in the second beam set at the tenth time, actually measured by the terminal device; beam identifier information corresponding to the beam with the best beam measurement result in the second beam set at the time when the terminal device predicts the radio link failure event is triggered; beam measurement result corresponding to the beam with the best beam measurement result in the second beam set at the time when the terminal device predicts the radio link failure event is triggered; cell-level measurement result of the serving cell at the tenth time, actually measured by the terminal device; cell-level measurement result of the serving cell at the time when the terminal device predicts the radio link failure event is triggered; and eighth information, which indicates the time interval between the time when the terminal device predicts the radio link failure event is triggered and the time when the fifth information is reported. The time when the terminal device triggers the radio link failure event in the serving cell can be the eleventh time. The second beam set is either the beam set used by the terminal device to perform the wireless link failure monitoring task, or a beam set composed of reference beams indicated in the cell configuration corresponding to one or more LTM candidate cells.

[0443] When the seventh information includes the beam identifier information corresponding to the beam with the best beam measurement result in the second beam set at the tenth moment as actually measured by the terminal device, the network device can know which beam is the best beam at present, and thus adjust the communication strategy based on the beam to avoid the actual occurrence of wireless link failure events.

[0444] When the seventh piece of information includes the beam measurement result corresponding to the best beam in the second beam set at the tenth moment, which is actually measured by the terminal device, the network device can know the measurement result of the best beam at present, thereby quantitatively adjusting the communication strategy and avoiding the actual occurrence of wireless link failure events.

[0445] If the seventh information includes the beam identifier information corresponding to the beam with the best beam measurement result in the second beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device, the network device can know which beam is the best beam at the time when the predicted wireless link failure event is triggered, and thus adjust the communication strategy based on that beam to avoid the actual occurrence of the wireless link failure event.

[0446] If the seventh information includes the beam measurement result of the best beam in the second beam set at the moment when the wireless link failure event is predicted to be triggered by the terminal device, the network device can know the measurement result of the best beam at the moment when the predicted wireless link failure event is triggered, thereby quantitatively adjusting the communication strategy to avoid the actual occurrence of the wireless link failure event.

[0447] When the seventh piece of information includes the cell-level measurement results of the serving cell at the tenth moment actually measured by the terminal device, the network device can know the cell-level measurement results of the current serving cell, and thus quantitatively adjust the communication strategy according to the cell-level measurement results of the current serving cell to avoid the actual occurrence of wireless link failure events.

[0448] If the seventh piece of information includes the cell-level measurement results of the serving cell at the moment when the predicted wireless link failure event is triggered by the terminal device, the network device can know the cell-level measurement results of the serving cell at the moment when the predicted wireless link failure event is triggered, and thus quantitatively adjust the communication strategy according to the predicted cell-level measurement results of the serving cell to avoid the actual occurrence of the wireless link failure event.

[0449] When the seventh piece of information includes the eighth piece of information, the network device can assess the urgency of the wireless link failure event in order to flexibly adjust its strategy.

[0450] Optionally, the seventh information may include one of the information in the first implementation. For example, the seventh information may include the beam identifier information corresponding to the beam with the best beam measurement result in the second beam set at the tenth time, as actually measured by the terminal device; or it may include the beam identifier information corresponding to the beam with the best beam measurement result in the second beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device; or it may include the cell-level measurement result of the serving cell at the tenth time, as actually measured by the terminal device; or it may include the cell-level measurement result of the serving cell at the time when the wireless link failure event is predicted to be triggered by the terminal device; or it may include eighth information.

[0451] Optionally, the seventh information may include two types of information from the first implementation. For example, the seventh information may include the beam identifier information corresponding to the beam with the best beam measurement result in the second beam set at the tenth time, as actually measured by the terminal device, and the beam measurement result corresponding to the beam with the best beam measurement result in the second beam set at the tenth time, as actually measured by the terminal device; or it may include the beam identifier information corresponding to the beam with the best beam measurement result in the second beam set at the time the wireless link failure event is predicted to be triggered by the terminal device, and the beam measurement result corresponding to the beam with the best beam measurement result in the second beam set at the time the wireless link failure event is predicted to be triggered by the terminal device; or it may include the cell-level measurement result of the serving cell at the tenth time, as actually measured by the terminal device, and the cell-level measurement result of the serving cell at the time the wireless link failure event is predicted to be triggered by the terminal device. The results may include: the beam identifier information corresponding to the best beam measurement result in the second beam set at the tenth time, as actually measured by the terminal device, and the cell-level measurement result of the serving cell at the tenth time, as actually measured by the terminal device; or the beam identifier information corresponding to the best beam measurement result in the second beam set at the time the wireless link failure event is predicted to be triggered by the terminal device, and the cell-level measurement result of the serving cell at the time the wireless link failure event is predicted to be triggered by the terminal device; or the beam identifier information corresponding to the best beam measurement result in the second beam set at the tenth time, as actually measured by the terminal device, and the eighth information; or the beam identifier information corresponding to the best beam measurement result in the second beam set at the time the wireless link failure event is predicted to be triggered by the terminal device, and the eighth information; or the cell-level measurement result of the serving cell at the tenth time, as actually measured by the terminal device, and the eighth information; or the cell-level measurement result of the serving cell at the time the wireless link failure event is predicted to be triggered by the terminal device, and the eighth information.

[0452] Optionally, the seventh information may include the three types of information in the first implementation. For example, the seventh information may include the beam identifier information corresponding to the beam with the best beam measurement result in the second beam set at the tenth time, the beam measurement result corresponding to the beam with the best beam measurement result in the second beam set at the tenth time, and the cell-level measurement result of the serving cell at the tenth time, as actually measured by the terminal device; or the seventh information may include the beam identifier information corresponding to the beam with the best beam measurement result in the second beam set at the tenth time, the beam measurement result corresponding to the beam with the best beam measurement result in the second beam set at the tenth time, and the cell-level measurement result of the serving cell as actually measured by the terminal device; or the seventh information may include the beam identifier information corresponding to the beam with the best beam measurement result in the second beam set at the tenth time, the beam measurement result corresponding to the beam with the best beam measurement result in the second beam set at the tenth time, and the cell-level measurement result of the serving cell as actually measured by the terminal device. The beam measurement result corresponding to the best-performing beam and the cell-level measurement result of the serving cell at the time the wireless link failure event is predicted by the terminal device; or the seventh information includes the beam identifier information corresponding to the best-performing beam in the second beam set at the tenth time, the beam measurement result corresponding to the best-performing beam in the second beam set at the tenth time, and the eighth information; or the beam identification information corresponding to the best-performing beam in the second beam set at the time the wireless link failure event is predicted by the terminal device. The beam identification information, the beam measurement result corresponding to the best beam measurement result in the second beam set at the time the wireless link failure event is predicted by the terminal device, and the cell-level measurement result of the serving cell at the tenth time actually measured by the terminal device; or including the beam identification information corresponding to the best beam measurement result in the second beam set at the time the wireless link failure event is predicted by the terminal device, the beam measurement result corresponding to the best beam measurement result in the second beam set at the time the wireless link failure event is predicted by the terminal device, and the cell-level measurement result of the serving cell at the tenth time actually measured by the terminal device; The cell-level measurement results of the serving cell at the time the wireless link failure event is triggered; or the beam identification information corresponding to the beam with the best beam measurement result in the second beam set at the time the wireless link failure event is triggered as predicted by the terminal device, the beam measurement results corresponding to the beam with the best beam measurement result in the second beam set at the time the wireless link failure event is triggered as predicted by the terminal device, and the eighth information; or the cell-level measurement results of the serving cell at the tenth time actually measured by the terminal device, the cell-level measurement results of the serving cell at the time the wireless link failure event is triggered as predicted by the terminal device, and the eighth information.

[0453] Optionally, the seventh information may include the four types of information in the first implementation. For example, the seventh information may include the beam identifier information corresponding to the beam with the best beam measurement result in the second beam set at the tenth time, the beam measurement result corresponding to the beam with the best beam measurement result in the second beam set at the tenth time, the beam identifier information corresponding to the beam with the best beam measurement result in the second beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device, and the beam measurement result corresponding to the beam with the best beam measurement result in the second beam set at the time when the wireless link failure event is predicted to be triggered by the terminal device; or it may include the beam measurement result in the second beam set at the tenth time actually measured by the terminal device. The best beam identification information, the beam measurement result corresponding to the best beam measurement result in the second beam set at the tenth time as actually measured by the terminal device, the cell-level measurement result of the serving cell at the tenth time as actually measured by the terminal device, and the cell-level measurement result of the serving cell at the time when the radio link failure event is predicted by the terminal device; or including the beam identification information corresponding to the best beam measurement result in the second beam set at the tenth time as actually measured by the terminal device, the beam measurement result corresponding to the best beam measurement result in the second beam set at the tenth time as actually measured by the terminal device, and the cell-level measurement result of the serving cell at the time when the radio link failure event is predicted by the terminal device; or including the beam identification information corresponding to the best beam measurement result in the second beam set at the tenth time as actually measured by the terminal device, the beam measurement result corresponding to the best beam measurement result in the second beam set at the tenth time as actually measured by the terminal device, and the cell-level measurement result of the serving cell at the time when the radio link failure event is predicted by the terminal device. The information includes: the cell-level measurement results of the serving cell at the tenth moment and the eighth information; or the beam identifier information corresponding to the best beam measurement result in the second beam set at the tenth moment as actually measured by the terminal device, the beam measurement result corresponding to the best beam measurement result in the second beam set at the tenth moment as actually measured by the terminal device, the cell-level measurement results of the serving cell at the moment when the radio link failure event is predicted by the terminal device, and the eighth information; or the beam identifier information corresponding to the best beam measurement result in the second beam set at the moment when the radio link failure event is predicted by the ter...

Claims

1. A method of wireless communication, the method comprising: include: If the first event is met, the terminal device executes the preset behavior; The first event is related to a low-layer triggered mobility LTM handover, or the first event is related to LTM handover and a radio link failure event predicted by the terminal device, and the preset behavior is related to LTM handover.

2. The method of claim 1, wherein, The first event includes: In the first moment, the terminal device predicts that in the second moment after the first duration, the terminal device will trigger a radio link failure in the serving cell, and in the first moment, the terminal device predicts that within the first duration, the handover conditions associated with any one or more conditional LTM candidate cells will not be met; or In the first moment, the terminal device predicts that the time interval between the fourth moment and the third moment is less than or equal to the second duration, wherein the third moment is the earliest moment when the handover conditions associated with at least one LTM candidate cell predicted by the terminal device are met, and the fourth moment is the moment when the terminal device predicts that the terminal device will trigger a radio link failure in the serving cell. Wherein, the first moment is the current moment of the terminal device.

3. The method according to claim 2, characterized in that, Also includes: The terminal device receives first configuration information sent by the network device, the first configuration information being related to the first event, and the first configuration information including: The first parameter indicates the value of the first duration; or The second parameter indicates the value of the second duration; or The first parameter and the second parameter are used to indicate the value of the first duration and the second parameter is used to indicate the value of the second duration.

4. The method according to any one of claims 1 to 3, characterized in that, The preset behavior includes any one of the following: If the first condition is met, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets the first condition, wherein the first condition is related to the measurement results of the conditional LTM candidate cell; or If the first event is satisfied, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets the second condition, wherein the second condition is that the beam measurement result corresponding to the best beam of the conditional LTM candidate cell is the best among all beam measurement results corresponding to all conditional LTM candidate cells, or the cell-level measurement result corresponding to the conditional LTM candidate cell is the best among all cell-level measurement results corresponding to all conditional LTM candidate cells; or If the third condition is met, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets the first condition, or the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets the second condition, wherein the third condition is related to the measurement result of the serving cell of the terminal device; or If the fourth condition is met, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets the fourth condition, wherein the fourth condition is related to the measurement results of the conditional LTM candidate cell and the measurement results of the serving cell of the terminal device; or Upon reaching the fifth time point, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets the second condition, wherein the time interval between the fifth time point and the first time point is a third duration; or Upon reaching the sixth time point, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets the second condition, wherein the time interval between the second time point and the sixth time point is a fourth duration; or Upon reaching the seventh time, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets the second condition, wherein the seventh time is any time between the first time and the second time.

5. The method of claim 4, wherein, The first condition includes any one of the following: The cell-level measurement results and / or beam-level measurement results corresponding to the conditional LTM candidate cell satisfy the event type indicated in its associated handover conditions, but the duration of the state corresponding to the cell-level measurement results and / or beam-level measurement results corresponding to the conditional LTM candidate cell satisfying the event type indicated in its associated handover conditions as of the current time is less than a first duration threshold. or The beam measurement result corresponding to the best beam of the conditional LTM candidate cell is greater than the first threshold. or The cell-level measurement result corresponding to the conditional LTM candidate cell is greater than the second threshold.

6. The method according to claim 4 or 5, characterized in that, The third condition includes any one of the following: The beam measurement result of the current serving beam of the terminal device is less than or equal to the third threshold; or The beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fourth threshold. or The cell-level measurement result of the current serving cell of the terminal device is less than or equal to the fifth threshold.

7. The method according to any one of claims 4-6, characterized in that, The fourth condition includes any one of the following: The cell-level measurement results and / or beam-level measurement results corresponding to the conditional LTM candidate cell satisfy the event type indicated in its associated handover conditions, but the duration corresponding to the state where the cell-level measurement results and / or beam-level measurement results corresponding to the conditional LTM candidate cell satisfy the event type indicated in its associated handover conditions as of the current time is less than a first duration threshold, and the current service of the terminal device... The beam measurement result of the service beam is less than or equal to the third threshold; or The cell-level measurement results and / or beam-level measurement results corresponding to the conditional LTM candidate cell satisfy the event type indicated in its associated handover conditions, but the duration of the state corresponding to the cell-level measurement results and / or beam-level measurement results corresponding to the conditional LTM candidate cell satisfying the event type indicated in its associated handover conditions up to the current time is less than a first duration threshold, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to a fourth threshold. or The cell-level measurement results and / or beam-level measurement results corresponding to the conditional LTM candidate cell satisfy the event type indicated in its associated handover conditions, but the duration of the state corresponding to the cell-level measurement results and / or beam-level measurement results corresponding to the conditional LTM candidate cell satisfying the event type indicated in its associated handover conditions up to the current time is less than the first duration threshold, and the cell-level measurement results of the current serving cell of the terminal device are less than or equal to the fifth threshold. or The beam measurement result corresponding to the best beam of the conditional LTM candidate cell is greater than the first threshold, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the third threshold. or The beam measurement result corresponding to the best beam of the conditional LTM candidate cell is greater than the first threshold, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fourth threshold. or The beam measurement result corresponding to the best beam of the conditional LTM candidate cell is greater than the first threshold, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the fifth threshold. or The beam measurement result corresponding to the best beam of the conditional LTM candidate cell is the best among all the beam measurement results corresponding to the conditional LTM candidate cells, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the third threshold. or The beam measurement result corresponding to the best beam of the conditional LTM candidate cell is the best among all the beam measurement results corresponding to the conditional LTM candidate cells, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fourth threshold. or The beam measurement result corresponding to the best beam of the conditional LTM candidate cell is the best among all the beam measurement results corresponding to the conditional LTM candidate cells, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the fifth threshold. or The cell-level measurement result corresponding to the conditional LTM candidate cell is greater than the second threshold, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the third threshold. or The cell-level measurement result corresponding to the conditional LTM candidate cell is greater than the second threshold, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fourth threshold. or The cell-level measurement result corresponding to the conditional LTM candidate cell is greater than the second threshold, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the fifth threshold. or The cell-level measurement result corresponding to the conditional LTM candidate cell is the best among all cell-level measurement results corresponding to the conditional LTM candidate cells, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the third threshold. or The cell-level measurement result corresponding to the conditional LTM candidate cell is the best among all cell-level measurement results corresponding to the conditional LTM candidate cells, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fourth threshold. or The cell-level measurement result corresponding to the conditional LTM candidate cell is the best among all the cell-level measurement results corresponding to the conditional LTM candidate cells, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the fifth threshold.

8. The method according to any one of claims 4-7, characterized in that, The method further includes: The terminal device receives second configuration information sent by the network device. The second configuration information is related to the preset behavior and includes: A third parameter, wherein the third parameter is used to indicate the value of the first threshold; or The fourth parameter, which indicates the value of the second threshold; or The fifth parameter, which indicates the value of the third threshold; or The sixth parameter, which indicates the value of the fourth threshold; or The seventh parameter, which indicates the value of the fifth threshold; or The third parameter and the fifth parameter, wherein the third parameter indicates the value of the first threshold, and the fifth parameter indicates the value of the third threshold; or The third parameter and the sixth parameter, wherein the third parameter indicates the value of the first threshold, and the sixth parameter indicates the value of the fourth threshold; or The third parameter and the seventh parameter, wherein the third parameter indicates the value of the first threshold, and the seventh parameter indicates the value of the fifth threshold; or The fourth parameter and the fifth parameter, wherein the fourth parameter indicates the value of the second threshold, and the fifth parameter indicates the value of the third threshold; or The fourth parameter and the sixth parameter, wherein the fourth parameter indicates the value of the second threshold, and the sixth parameter indicates the value of the fourth threshold; or The fourth parameter and the seventh parameter, wherein the fourth parameter is used to indicate the value of the second threshold, and the seventh parameter is used to indicate the... The value of the fifth threshold; or The eighth parameter, which indicates the value of the third duration; or The ninth parameter is used to indicate the value of the fourth duration.

9. The method according to any one of claims 4-8, characterized in that, The method further includes: At the first moment, if the terminal device predicts that no conditional LTM candidate cell satisfies the first condition at any time before the terminal device triggers a radio link failure event in the serving cell, the terminal device sends first information to the network device. The first information includes second information and / or third information, wherein the second information is used to indicate that the terminal device predicts that the terminal device will trigger a radio link failure in the serving cell at a future time, and the third information is used to indicate detailed information related to the radio link failure event predicted by the terminal device.

10. The method according to any one of claims 4-9, characterized in that, The method further includes: At the first moment, if the terminal device predicts that no conditional LTM candidate cell satisfies the fourth condition at any time before the terminal device triggers a radio link failure event in the serving cell, the terminal device sends first information to the network device. The first information includes second information and / or third information, wherein the second information is used to indicate that the terminal device predicts that the terminal device will trigger a radio link failure in the serving cell at a future time, and the third information is used to indicate detailed information related to the radio link failure event predicted by the terminal device.

11. The method according to any one of claims 2-8, characterized in that, The method further includes: If the first event is satisfied, the terminal device sends first information to the network device. The first information includes second information and / or third information, wherein the second information is used to indicate that the terminal device predicts that it will trigger a radio link failure in the serving cell at a future time, and the third information is used to indicate details related to the radio link failure event predicted by the terminal device.

12. The method according to any one of claims 9-11, characterized in that, The third information includes one or more of the following: The beam identification information corresponding to the beam with the best beam measurement result in the first beam set at the first moment, as actually measured by the terminal device; The beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first moment, as actually measured by the terminal device; The beam identification information corresponding to the beam with the best beam measurement result in the first beam set at the moment when the wireless link failure event predicted by the terminal device is triggered. The beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the moment when the wireless link failure event predicted by the terminal device is triggered; The cell-level measurement results of the serving cell actually measured by the terminal device at the first moment; The cell-level measurement results of the serving cell at the moment when the wireless link failure event predicted by the terminal device is triggered; The fourth information is used to indicate the length of the time interval between the time when the terminal device predicts the wireless link failure event and the time when it reports the first information. Wherein, the first beam set is either the beam set used by the terminal device to perform the wireless link failure monitoring task or a beam set composed of reference beams indicated in the cell configuration corresponding to one or more conditional LTM candidate cells.

13. The method according to any one of claims 9-11, characterized in that, The third information includes one or more of the following: The beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the first moment, as actually measured by the terminal device; The beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first moment, as actually measured by the terminal device; The beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event predicted by the terminal device is triggered; The beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event predicted by the terminal device is triggered. The cell-level measurement results of the serving cell actually measured by the terminal device at the first moment; The cell-level measurement results of the serving cell at the moment when the wireless link failure event predicted by the terminal device is triggered; The fourth information is used to indicate the length of the time interval between the time when the terminal device predicts the wireless link failure event and the time when it reports the first information. Where K is a positive integer, and the first beam set is either the beam set used by the terminal device to perform the wireless link failure monitoring task or the beam set composed of reference beams indicated in the cell configuration corresponding to one or more conditional LTM candidate cells.

14. The method according to claim 12 or 13, characterized in that, The third information also includes one or more of the following: The PCI and / or frequency point information of the beam with the best beam measurement result in the first beam set at the first moment, as actually measured by the terminal device; The PCI and / or frequency information associated with the beam with the best beam measurement result in the first beam set at the moment when the wireless link failure event predicted by the terminal device is triggered. The PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the first beam set at the first moment, as actually measured by the terminal device; The PCI and / or frequency information associated with the top K beams with the best beam measurement results in the first beam set at the moment when the wireless link failure event predicted by the terminal device is triggered.

15. The method of any one of claims 1-14, wherein, The method further includes: The terminal device sends first capability information to the network device. The first capability information is used to indicate whether the terminal device supports the radio link failure event prediction function and / or to indicate whether the terminal device supports the function of triggering conditional handover before the handover conditions associated with any conditional LTM candidate cell are met.

16. The method of claim 1, wherein, The first event includes: At the eighth time, the terminal device predicts that at least one handover condition associated with a conditional LTM candidate cell will be met at the time after the fifth time period, wherein the eighth time is the current time of the terminal device.

17. The method of claim 16, wherein, The preset behavior includes any one of the following: At the eighth moment, the terminal device initiates a handover procedure to an LTM candidate cell that meets the conditions of the first event; or Upon reaching the ninth time, if at least one of the conditional LTM candidate cells satisfies the fifth condition, the terminal device initiates a handover procedure to the conditional LTM candidate cell that satisfies the fifth condition. The ninth time is equal to the eighth time or is a time after the eighth time. Furthermore, at the ninth time, the beam measurement result of the terminal device's current serving beam is less than or equal to the sixth threshold, or the beam measurement result corresponding to the best beam of the terminal device's current serving cell is less than or equal to the seventh threshold, or the cell measurement result of the terminal device's current serving cell is less than or equal to the eighth threshold. The fifth condition is either the handover condition associated with the expected conditional LTM candidate cell will be satisfied within the fifth time period, or the time at which the handover condition associated with the expected conditional LTM candidate cell is satisfied is the shortest from the ninth time.

18. The method according to claim 16 or 17, characterized in that, The method further includes: The terminal device receives third configuration information sent by the network device. This third configuration information is related to the first event and / or to the preset behavior. The third configuration information includes: The tenth parameter, which indicates the value of the fifth duration; or The tenth parameter and the eleventh parameter, wherein the tenth parameter is used to indicate the value of the fifth duration, and the eleventh parameter is used to indicate the value of the sixth threshold, the seventh threshold, or the eighth threshold.

19. The method of any one of claims 16-18, wherein, The method further includes: The terminal device sends second capability information to the network device. The second capability information is used to indicate whether the terminal device supports the function of triggering conditional handover before the handover conditions associated with any conditional LTM candidate cell are met.

20. The method of claim 1, wherein, The first event includes: The terminal device stores the cell configuration of one or more valid LTM candidate cells. At the tenth time, the terminal device predicts that at the eleventh time after the sixth time, the terminal device will trigger a radio link failure in the serving cell. Here, the tenth time is the current time of the terminal device.

21. The method of claim 20, wherein, The preset behaviors include: If the first event is satisfied, the terminal device sends fifth information to the network device. The fifth information includes sixth and / or seventh information, wherein the sixth information indicates that the terminal device predicts a future radio link failure in the serving cell, and the seventh information indicates details related to the predicted radio link failure event; or At the twelfth moment, the terminal device sends fifth information to the network device. This fifth information includes sixth and / or seventh information. The sixth information indicates that the terminal device predicts a future time when it will trigger a radio link failure in the serving cell. The seventh information indicates details related to the predicted radio link failure event. The twelfth moment is a time after the tenth moment, and the time interval between the twelfth and tenth moments is equal to the seventh duration. At the thirteenth moment, the terminal device sends fifth information to the network device. The fifth information includes sixth and / or seventh information. The sixth information indicates that the terminal device predicts a future radio link failure in the serving cell. The seventh information indicates details related to the predicted radio link failure event. The thirteenth moment is equal to or follows the tenth moment. The beam measurement result of the current serving beam of the terminal device is less than or equal to the ninth threshold, or the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the tenth threshold, or the cell measurement result of the current serving cell of the terminal device is less than or equal to the eleventh threshold at the thirteenth time.

22. The method of claim 20 or 21, wherein, The method further includes: The terminal device receives fourth configuration information sent by the network device. This fourth configuration information is related to the first event and / or to the preset behavior. The fourth configuration information includes: The twelfth parameter, which indicates the value of the sixth duration; or... The twelfth and thirteenth parameters, wherein the twelfth parameter indicates the value of the sixth duration, and the thirteenth parameter indicates the value of the seventh duration; or... The twelfth parameter and the fourteenth parameter, wherein the twelfth parameter is used to indicate the value of the sixth duration, and the fourteenth parameter is used to indicate the value of the ninth threshold, the tenth threshold, or the eleventh threshold.

23. The method of claim 20, wherein, The preset behaviors include: If the sixth condition is met, the terminal device initiates a handover procedure to an LTM candidate cell that meets the sixth condition, wherein the sixth condition is that the beam measurement result corresponding to the best beam of the LTM candidate cell is greater than the twelfth threshold or the cell-level measurement result corresponding to the LTM candidate cell is greater than the thirteenth threshold; or If the first event is satisfied, the terminal device initiates a handover procedure to an LTM candidate cell that meets the seventh condition, wherein the seventh condition is that the beam measurement result corresponding to the best beam of the LTM candidate cell is the best among all beam measurement results corresponding to all LTM candidate cells, or the seventh condition is that the cell-level measurement result corresponding to the LTM candidate cell is the best among all cell-level measurement results corresponding to all LTM candidate cells; or If the eighth condition is met, the terminal device initiates a handover procedure to an LTM candidate cell that meets the sixth condition, or the terminal device initiates a handover procedure to an LTM candidate cell that meets the seventh condition. The eighth condition is that the beam measurement result of the terminal device's current serving beam is less than or equal to the fourteenth threshold, or the beam measurement result corresponding to the best beam of the terminal device's current serving cell is less than or equal to the fifteenth threshold, or the cell-level measurement result of the terminal device's current serving cell is less than or equal to the sixteenth threshold. If the ninth condition is met, the terminal device initiates a handover procedure to an LTM candidate cell that meets the ninth condition, wherein the ninth condition is related to the measurement results of the LTM candidate cell and the measurement results of the serving cell of the terminal device; or At the fourteenth time, the terminal device initiates a handover procedure to an LTM candidate cell that meets the seventh condition, wherein the time interval between the fourteenth time and the tenth time is an eighth duration; or At the fifteenth time, the terminal device initiates a handover procedure to an LTM candidate cell that meets the seventh condition, wherein the time interval between the eleventh time and the fifteenth time is the ninth duration; or Upon reaching the sixteenth time, the terminal device initiates a handover procedure to an LTM candidate cell that meets the seventh condition. The sixteenth time is any time between the tenth time and the eleventh time.

24. The method of claim 23, wherein, The ninth condition includes any one of the following: The beam measurement result corresponding to the best beam of the LTM candidate cell is greater than the twelfth threshold, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the fourteenth threshold. or The beam measurement result corresponding to the best beam of the LTM candidate cell is greater than the twelfth threshold, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fifteenth threshold. or The beam measurement result corresponding to the best beam of the LTM candidate cell is greater than the twelfth threshold, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the sixteenth threshold. or The beam measurement result corresponding to the best beam of the LTM candidate cell is the best among all the beam measurement results corresponding to the LTM candidate cells, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the fourteenth threshold. or The beam measurement result corresponding to the best beam of the LTM candidate cell is the best among all the beam measurement results corresponding to the LTM candidate cells, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fifteenth threshold. or The best beam measurement result of the LTM candidate cell is the best among all the beam measurement results of the LTM candidate cells, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the sixteenth threshold. or The cell-level measurement result corresponding to the LTM candidate cell is greater than the thirteenth threshold, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the fourteenth threshold. or The cell-level measurement result corresponding to the LTM candidate cell is greater than the thirteenth threshold, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fifteenth threshold. or The cell-level measurement result corresponding to the LTM candidate cell is greater than the thirteenth threshold, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the sixteenth threshold. or The cell-level measurement results corresponding to the LTM candidate cells are the best among all cell-level measurement results corresponding to the LTM candidate cells, and the The beam measurement result of the current serving beam of the terminal device is less than or equal to the fourteenth threshold; or The cell-level measurement result corresponding to the LTM candidate cell is the best among all cell-level measurement results corresponding to the LTM candidate cells, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fifteenth threshold. or The cell-level measurement result corresponding to the LTM candidate cell is the best among all cell-level measurement results corresponding to the LTM candidate cells, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the sixteenth threshold.

25. The method of claim 23 or 24, wherein, The method further includes: The terminal device receives fifth configuration information sent by the network device. This fifth configuration information is related to the preset behavior and includes: The fifteenth parameter, which indicates the value of the twelfth threshold; or The sixteenth parameter, which indicates the value of the thirteenth threshold; or The seventeenth parameter, which indicates the value of the fourteenth threshold; or The eighteenth parameter, which indicates the value of the fifteenth threshold; or The nineteenth parameter, which indicates the value of the sixteenth threshold; or The fifteenth parameter and the seventeenth parameter, wherein the fifteenth parameter indicates the value of the twelfth threshold, and the seventeenth parameter indicates the value of the fourteenth threshold; or The fifteenth parameter and the eighteenth parameter, wherein the fifteenth parameter is used to indicate the value of the twelfth threshold, and the eighteenth parameter is used to indicate the value of the fifteenth threshold; or The fifteenth parameter and the nineteenth parameter, wherein the fifteenth parameter indicates the value of the twelfth threshold, and the nineteenth parameter indicates the value of the sixteenth threshold; or The sixteenth parameter and the seventeenth parameter, wherein the sixteenth parameter indicates the value of the thirteenth threshold, and the seventeenth parameter indicates the value of the fourteenth threshold; or The sixteenth parameter and the eighteenth parameter, wherein the sixteenth parameter indicates the value of the thirteenth threshold, and the eighteenth parameter indicates the value of the fifteenth threshold; or The sixteenth parameter and the nineteenth parameter, wherein the sixteenth parameter indicates the value of the thirteenth threshold, and the nineteenth parameter indicates the value of the sixteenth threshold; or The twentieth parameter, which indicates the value of the eighth duration; or The twenty-first parameter is used to indicate the value of the ninth duration.

26. The method of any one of claims 23-25, wherein, The method further includes: At the tenth moment, if the terminal device predicts that no LTM candidate cell satisfies the sixth condition at any time before the terminal device triggers a radio link failure event in the serving cell, the terminal device sends fifth information to the network device. The fifth information includes the sixth information and / or the seventh information, wherein the sixth information is used to indicate that the terminal device predicts that the terminal device will trigger a radio link failure in the serving cell at a future time, and the seventh information is used to indicate the details related to the radio link failure event predicted by the terminal device.

27. The method of any one of claims 23-26, wherein, The method further includes: At the tenth moment, if the terminal device predicts that no LTM candidate cell satisfies the ninth condition at any time before the terminal device triggers a radio link failure event in the serving cell, the terminal device sends fifth information to the network device. The fifth information includes sixth information and / or seventh information, wherein the sixth information is used to indicate that the terminal device predicts that the terminal device will trigger a radio link failure in the serving cell at a future time, and the seventh information is used to indicate the details related to the radio link failure event predicted by the terminal device.

28. The method of any one of claims 23-25, wherein, The method further includes: If the first event is satisfied, the terminal device sends fifth information to the network device. The fifth information includes sixth information and / or seventh information. The sixth information is used to indicate that the terminal device predicts that it will trigger a radio link failure in the serving cell at a future time. The seventh information is used to indicate details related to the predicted radio link failure event.

29. The method of any one of claims 21, 26-28, wherein, The seventh piece of information includes one or more of the following: The beam identification information corresponding to the beam with the best beam measurement result in the second beam set at the tenth moment, as actually measured by the terminal device; The beam measurement result corresponding to the beam with the best beam measurement result in the second beam set at the tenth moment, as actually measured by the terminal device; The beam identification information corresponding to the beam with the best beam measurement result in the second beam set at the moment when the wireless link failure event predicted by the terminal device is triggered. The beam pair with the best beam measurement results in the second beam set at the moment when the wireless link failure event predicted by the terminal device is triggered. The corresponding beam measurement results; The cell-level measurement results of the serving cell at the tenth moment actually measured by the terminal device; The cell-level measurement results of the serving cell at the moment when the wireless link failure event predicted by the terminal device is triggered; The eighth information is used to indicate the length of the time interval between the time when the terminal device predicts the wireless link failure event and the time when the fifth information is reported; The second beam set is either the beam set used by the terminal device to perform the wireless link failure monitoring task or the beam set composed of reference beams indicated in the cell configuration corresponding to one or more LTM candidate cells.

30. The method of any one of claims 21, 26-28, wherein, The seventh piece of information includes one or more of the following: The beam identification information corresponding to the top K beams with the best beam measurement results in the second beam set at the tenth moment, as actually measured by the terminal device; The beam measurement results corresponding to the top K beams with the best beam measurement results in the second beam set at the tenth moment, as actually measured by the terminal device; The beam identification information corresponding to the top K beams with the best beam measurement results in the second beam set at the time when the wireless link failure event predicted by the terminal device is triggered; The beam measurement results corresponding to the top K beams with the best beam measurement results in the second beam set at the time when the wireless link failure event predicted by the terminal device is triggered. The cell-level measurement results of the serving cell at the tenth moment actually measured by the terminal device; The cell-level measurement results of the serving cell at the moment when the wireless link failure event predicted by the terminal device is triggered; The eighth information is used to indicate the length of the time interval between the time when the terminal device predicts the wireless link failure event and the time when the fifth information is reported; Where K is a positive integer, and the second beam set is either the beam set used by the terminal device to perform the wireless link failure monitoring task or the beam set composed of reference beams indicated in the cell configuration corresponding to one or more LTM candidate cells.

31. The method of claim 29 or 30, wherein, The seventh information also includes one or more of the following: The PCI and / or frequency point information of the beam associated with the best beam measurement result in the second beam set at the tenth moment, as actually measured by the terminal device; The PCI and / or frequency information associated with the beam with the best beam measurement result in the second beam set at the moment when the wireless link failure event predicted by the terminal device is triggered. The PCI and / or frequency information associated with the top K beams with the best beam measurement results in the second beam set at the tenth moment, as actually measured by the terminal device; The PCI and / or frequency information associated with the top K beams in the second beam set with the best beam measurement results at the time when the wireless link failure event predicted by the terminal device is triggered.

32. The method of any one of claims 20-31, wherein, The method further includes: The terminal device sends third capability information to the network device. The third capability information is used to indicate whether the terminal device supports the wireless link failure event prediction function and / or to indicate whether the terminal device supports the function of autonomously triggering LTM handover before receiving the LTM handover command sent by the network device.

33. A method of wireless communication, the method comprising: include: The network device sends configuration information to the terminal device, the configuration information being related to a first event and / or a preset behavior; The first event is related to a low-layer triggered mobility LTM handover, or the first event is related to LTM handover and a radio link failure event predicted by the terminal device, and the preset behavior is related to LTM handover.

34. The method of claim 33, wherein, The configuration information includes first configuration information, which is related to the first event. The first configuration information includes: The first parameter, which indicates the value of the first duration; or The second parameter indicates the value of the second duration; or The first parameter and the second parameter, wherein the first parameter is used to indicate the value of the first duration and the second parameter is used to indicate the value of the second duration; The first event includes: In the first moment, the terminal device predicts that in the second moment after the first duration, the terminal device will trigger a radio link failure in the serving cell, and in the first moment, the terminal device predicts that within the first duration, the handover conditions associated with any one or more conditional LTM candidate cells will not be met; or If the time interval predicted by the terminal device at the first moment is less than or equal to the third moment, its... In this context, the third time is the earliest time when the handover conditions associated with at least one LTM candidate cell predicted by the terminal device are met, and the fourth time is the time when the terminal device predicts that the terminal device will trigger a radio link failure in the serving cell. Wherein, the first moment is the current moment of the terminal device.

35. The method of claim 34, wherein, The configuration information includes second configuration information, which is related to the preset behavior. The second configuration information includes: The third parameter, which indicates the value of the first threshold; or The fourth parameter, which indicates the value of the second threshold; or The fifth parameter, which indicates the value of the third threshold; or The sixth parameter, which indicates the value of the fourth threshold; or The seventh parameter, which indicates the value of the fifth threshold; or The third parameter and the fifth parameter, wherein the third parameter indicates the value of the first threshold, and the fifth parameter indicates the value of the third threshold; or The third parameter and the sixth parameter, wherein the third parameter indicates the value of the first threshold, and the sixth parameter indicates the value of the fourth threshold; or The third parameter and the seventh parameter, wherein the third parameter indicates the value of the first threshold, and the seventh parameter indicates the value of the fifth threshold; or The fourth parameter and the fifth parameter, wherein the fourth parameter indicates the value of the second threshold, and the fifth parameter indicates the value of the third threshold; or The fourth parameter and the sixth parameter, wherein the fourth parameter indicates the value of the second threshold, and the sixth parameter indicates the value of the fourth threshold; or The fourth parameter and the seventh parameter, wherein the fourth parameter indicates the value of the second threshold, and the seventh parameter indicates the value of the fifth threshold; or The eighth parameter, which indicates the value of the third duration; or The ninth parameter, which is used to indicate the value of the fourth duration; The preset behavior includes any one of the following: If the first condition is met, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets the first condition, wherein the first condition is related to the measurement results of the conditional LTM candidate cell; or If the first event is satisfied, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets the second condition, wherein the second condition is that the beam measurement result corresponding to the best beam of the conditional LTM candidate cell is the best among all the beam measurement results corresponding to all conditional LTM candidate cells; or the second condition is that the cell-level measurement result corresponding to the conditional LTM candidate cell is the best among all the cell-level measurement results corresponding to all conditional LTM candidate cells; or If the third condition is met, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets the first condition, or the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets the second condition, wherein the third condition is related to the measurement result of the serving cell of the terminal device; or If the fourth condition is met, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets the fourth condition, wherein the fourth condition is related to the measurement results of the conditional LTM candidate cell and the measurement results of the serving cell of the terminal device; or Upon reaching the fifth time point, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets the second condition, wherein the time interval between the fifth time point and the first time point is a third duration; or Upon reaching the sixth time point, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets the second condition, wherein the time interval between the second time point and the sixth time point is a fourth duration; or Upon reaching the seventh time, the terminal device initiates a handover procedure to a conditional LTM candidate cell that meets the second condition, wherein the seventh time is any time between the first time and the second time.

36. The method of claim 34 or 35, wherein, The method further includes: The network device receives first information sent by the terminal device, the first information including second information and / or third information, wherein the second information is used to indicate that the terminal device predicts that the terminal device will trigger a radio link failure in the serving cell at a future time, and the third information is used to indicate details related to the radio link failure event predicted by the terminal device.

37. The method of claim 36, wherein, The third information includes one or more of the following: The beam identification information corresponding to the beam with the best beam measurement result in the first beam set at the first moment, as actually measured by the terminal device; The beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the first moment, as actually measured by the terminal device; The beam pair with the best beam measurement results in the first beam set at the moment when the wireless link failure event predicted by the terminal device is triggered. Corresponding beam identification information; The beam measurement result corresponding to the beam with the best beam measurement result in the first beam set at the moment when the wireless link failure event predicted by the terminal device is triggered; The cell-level measurement results of the serving cell actually measured by the terminal device at the first moment; The cell-level measurement results of the serving cell at the moment when the wireless link failure event predicted by the terminal device is triggered; The fourth information is used to indicate the length of the time interval between the time when the terminal device predicts the wireless link failure event and the time when it reports the first information. Wherein, the first beam set is either the beam set used by the terminal device to perform the wireless link failure monitoring task or a beam set composed of reference beams indicated in the cell configuration corresponding to one or more conditional LTM candidate cells.

38. The method of claim 36, wherein, The third information includes one or more of the following: The beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the first moment, as actually measured by the terminal device; The beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the first moment, as actually measured by the terminal device; The beam identification information corresponding to the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event predicted by the terminal device is triggered; The beam measurement results corresponding to the top K beams with the best beam measurement results in the first beam set at the time when the wireless link failure event predicted by the terminal device is triggered. The cell-level measurement results of the serving cell actually measured by the terminal device at the first moment; The cell-level measurement results of the serving cell at the moment when the wireless link failure event predicted by the terminal device is triggered; The fourth information is used to indicate the length of the time interval between the time when the terminal device predicts the wireless link failure event and the time when it reports the first information. Where K is a positive integer, and the first beam set is either the beam set used by the terminal device to perform the wireless link failure monitoring task or the beam set composed of reference beams indicated in the cell configuration corresponding to one or more conditional LTM candidate cells.

39. The method of claim 37 or 38, wherein, The third information also includes one or more of the following: The PCI and / or frequency point information of the beam with the best beam measurement result in the first beam set at the first moment, as actually measured by the terminal device; The PCI and / or frequency information associated with the beam with the best beam measurement result in the first beam set at the moment when the wireless link failure event predicted by the terminal device is triggered. The PCI and / or frequency point information associated with the top K beams with the best beam measurement results in the second beam set at the first moment, as actually measured by the terminal device; The PCI and / or frequency information associated with the top K beams in the second beam set with the best beam measurement results at the time when the wireless link failure event predicted by the terminal device is triggered.

40. The method of any one of claims 34-39, wherein, The method further includes: The network device receives first capability information sent by the terminal device. The first capability information is used to indicate whether the terminal device supports the radio link failure event prediction function and / or to indicate whether the terminal device supports the function of triggering conditional handover before the handover conditions associated with any conditional LTM candidate cell are met.

41. The method of claim 33, wherein, The configuration information includes third configuration information, which is related to the first event and / or the preset behavior. The third configuration information includes: The tenth parameter, which indicates the value of the fifth duration; or The tenth parameter and the eleventh parameter, wherein the tenth parameter is used to indicate the value of the fifth duration, and the eleventh parameter is used to indicate the value of the sixth threshold, the seventh threshold, or the eighth threshold; The first event includes: At the eighth time, the terminal device predicts that at least one handover condition associated with the conditional LTM candidate cell is met at the time after the fifth time period, wherein the eighth time is the current time of the terminal device; The preset behavior includes any one of the following: At the eighth moment, the terminal device arbitrarily selects a cell from the LTM candidate cells that meet the conditions of the first event to initiate a handover procedure; or Upon reaching the ninth time, if at least one cell in the conditional LTM candidate cells satisfies the fifth condition, the terminal device arbitrarily selects one cell from the conditional LTM candidate cells that satisfies the fifth condition to initiate a handover procedure. Here, the ninth time is equal to the eighth time or is a time after the eighth time, and at the ninth time, the terminal device's current service... If the beam measurement result of the serving beam is less than or equal to the sixth threshold, or the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the seventh threshold, or the cell measurement result of the current serving cell of the terminal device is less than or equal to the eighth threshold at the ninth time, then the fifth condition is that the handover condition associated with the expected LTM candidate cell will be met within the fifth time period, or the fifth condition is that the handover condition associated with the expected LTM candidate cell will be met within the fifth time period and the time when the handover condition associated with the expected LTM candidate cell is met is the shortest from the ninth time period.

42. The method of claim 41, wherein, The method further includes: The network device receives second capability information sent by the terminal device. The second capability information is used to indicate whether the terminal device supports the function of triggering conditional handover before the handover conditions associated with any conditional LTM candidate cell are met.

43. The method of claim 33, wherein, The configuration information includes fourth configuration information, which is related to the first event and / or the preset behavior. The fourth configuration information includes: The twelfth parameter, which indicates the value of the sixth duration; or The twelfth and thirteenth parameters, wherein the twelfth parameter indicates the value of the sixth duration, and the thirteenth parameter indicates the value of the seventh duration; or The twelfth parameter and the fourteenth parameter, wherein the twelfth parameter is used to indicate the value of the sixth duration, and the fourteenth parameter is used to indicate the value of the ninth threshold, the tenth threshold, or the eleventh threshold; The first event includes: The terminal device stores the cell configuration of one or more valid LTM candidate cells. At the tenth time, the terminal device predicts that at the eleventh time after the sixth time period, the terminal device will trigger a radio link failure in the serving cell. Here, the tenth time is the current time of the terminal device. The preset behaviors include: If the first event is satisfied, the terminal device sends fifth information to the network device. The fifth information includes sixth and / or seventh information, wherein the sixth information indicates that the terminal device predicts a future radio link failure in the serving cell, and the seventh information indicates details related to the predicted radio link failure event; or At the twelfth moment, the terminal device sends fifth information to the network device. This fifth information includes sixth and / or seventh information. The sixth information indicates that the terminal device predicts a future radio link failure in the serving cell. The seventh information indicates details related to the predicted radio link failure event. The twelfth moment is a time after the tenth moment, and the time interval between the twelfth and tenth moments is equal to the seventh duration. At the thirteenth moment, the terminal device sends fifth information to the network device. The fifth information includes sixth and / or seventh information. The sixth information indicates that the terminal device predicts that it will trigger a radio link failure in the serving cell at a future time. The seventh information indicates details related to the predicted radio link failure event. The thirteenth moment is equal to the tenth moment or is a moment after the tenth moment. At the thirteenth moment, the beam measurement result of the current serving beam of the terminal device is less than or equal to the ninth threshold, or the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the tenth threshold, or the cell measurement result of the current serving cell of the terminal device is less than or equal to the eleventh threshold.

44. The method of claim 33, wherein, The configuration information includes fifth configuration information, which is related to the first event and / or the preset behavior. The fifth configuration information includes: The fifteenth parameter, which indicates the value of the twelfth threshold; or The sixteenth parameter, which indicates the value of the thirteenth threshold; or The seventeenth parameter, which indicates the value of the fourteenth threshold; or The eighteenth parameter, which indicates the value of the fifteenth threshold; or The nineteenth parameter, which indicates the value of the sixteenth threshold; or The fifteenth parameter and the seventeenth parameter, wherein the fifteenth parameter indicates the value of the twelfth threshold, and the seventeenth parameter indicates the value of the fourteenth threshold; or The fifteenth parameter and the eighteenth parameter, wherein the fifteenth parameter is used to indicate the value of the twelfth threshold, and the eighteenth parameter is used to indicate the value of the fifteenth threshold; or The fifteenth parameter and the nineteenth parameter, wherein the fifteenth parameter indicates the value of the twelfth threshold, and the nineteenth parameter indicates the value of the sixteenth threshold; or The sixteenth parameter and the seventeenth parameter, wherein the sixteenth parameter indicates the value of the thirteenth threshold, and the seventeenth parameter indicates the value of the fourteenth threshold; or The sixteenth parameter and the eighteenth parameter, wherein the sixteenth parameter indicates the value of the thirteenth threshold, and the eighteenth parameter indicates the value of the fifteenth threshold; or The sixteenth parameter and the nineteenth parameter, wherein the sixteenth parameter indicates the value of the thirteenth threshold, and the nineteenth parameter indicates the value of the sixteenth threshold; or The twentieth parameter, used to indicate the value of the eighth duration; or The twenty-first parameter is used to indicate the value of the ninth duration. The first event includes: The terminal device stores the cell configuration of one or more valid LTM candidate cells. At the tenth time, the terminal device predicts that at the eleventh time after the sixth time, the terminal device will trigger a radio link failure in the serving cell. Here, the tenth time is the current time of the terminal device. The preset behaviors include: If the sixth condition is met, the terminal device initiates a handover procedure to an LTM candidate cell that meets the sixth condition, wherein the sixth condition is that the beam measurement result corresponding to the best beam of the LTM candidate cell is greater than the twelfth threshold or the cell-level measurement result corresponding to the LTM candidate cell is greater than the thirteenth threshold; or If the first event is satisfied, the terminal device initiates a handover procedure to an LTM candidate cell that meets the seventh condition, wherein the seventh condition is that the beam measurement result corresponding to the best beam of the LTM candidate cell is the best among all beam measurement results corresponding to all LTM candidate cells, or the seventh condition is that the cell-level measurement result corresponding to the LTM candidate cell is the best among all cell-level measurement results corresponding to all LTM candidate cells; or If the eighth condition is met, the terminal device initiates a handover procedure to an LTM candidate cell that meets the sixth condition, or the terminal device initiates a handover procedure to an LTM candidate cell that meets the seventh condition. The eighth condition is that the beam measurement result of the terminal device's current serving beam is less than or equal to the fourteenth threshold, or the beam measurement result corresponding to the best beam of the terminal device's current serving cell is less than or equal to the fifteenth threshold, or the cell-level measurement result of the terminal device's current serving cell is less than or equal to the sixteenth threshold. If the ninth condition is met, the terminal device initiates a handover procedure to an LTM candidate cell that meets the ninth condition, wherein the ninth condition is related to the measurement results of the LTM candidate cell and the measurement results of the serving cell of the terminal device; or At the fourteenth time, the terminal device initiates a handover procedure to an LTM candidate cell that meets the seventh condition, wherein the time interval between the fourteenth time and the tenth time is an eighth duration; or At the fifteenth time, the terminal device initiates a handover procedure to an LTM candidate cell that meets the seventh condition, wherein the time interval between the eleventh time and the fifteenth time is the ninth duration; or Upon reaching the sixteenth time, the terminal device initiates a handover procedure to an LTM candidate cell that meets the seventh condition. The sixteenth time is any time between the tenth time and the eleventh time.

45. The method of claim 44, wherein, The ninth condition includes any one of the following: The beam measurement result corresponding to the best beam of the LTM candidate cell is greater than the twelfth threshold, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the fourteenth threshold. or The beam measurement result corresponding to the best beam of the LTM candidate cell is greater than the twelfth threshold, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fifteenth threshold. or The beam measurement result corresponding to the best beam of the LTM candidate cell is greater than the twelfth threshold, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the sixteenth threshold. or The beam measurement result corresponding to the best beam of the LTM candidate cell is the best among all the beam measurement results corresponding to the LTM candidate cells, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the fourteenth threshold. or The beam measurement result corresponding to the best beam of the LTM candidate cell is the best among all the beam measurement results corresponding to the LTM candidate cells, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fifteenth threshold. or The best beam measurement result of the LTM candidate cell is the best among all the beam measurement results of the LTM candidate cells, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the sixteenth threshold. or The cell-level measurement result corresponding to the LTM candidate cell is greater than the thirteenth threshold, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the fourteenth threshold. or The cell-level measurement result corresponding to the LTM candidate cell is greater than the thirteenth threshold, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fifteenth threshold. or The cell-level measurement result corresponding to the LTM candidate cell is greater than the thirteenth threshold, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the sixteenth threshold. or The cell-level measurement result corresponding to the LTM candidate cell is the best among all cell-level measurement results corresponding to the LTM candidate cells, and the beam measurement result of the current serving beam of the terminal device is less than or equal to the fourteenth threshold. or The cell-level measurement result corresponding to the LTM candidate cell is the best among all cell-level measurement results corresponding to the LTM candidate cells, and the beam measurement result corresponding to the best beam of the current serving cell of the terminal device is less than or equal to the fifteenth threshold. or The cell-level measurement result corresponding to the LTM candidate cell is the best among all cell-level measurement results corresponding to the LTM candidate cells, and the cell-level measurement result of the current serving cell of the terminal device is less than or equal to the sixteenth threshold.

46. The method of claim 44 or 45, wherein, The method further includes: The network device receives fifth information sent by the terminal device, the fifth information including sixth information and / or seventh information, wherein the sixth information is used to indicate that the terminal device predicts that the terminal device will trigger a radio link failure in the serving cell at a future time, and the seventh information is used to indicate details related to the radio link failure event predicted by the terminal device.

47. The method of claim 43 or 46, wherein, The seventh piece of information includes one or more of the following: The beam identification information corresponding to the beam with the best beam measurement result in the second beam set at the tenth moment, as actually measured by the terminal device; The beam measurement result corresponding to the beam with the best beam measurement result in the second beam set at the tenth moment, as actually measured by the terminal device; The beam identification information corresponding to the beam with the best beam measurement result in the second beam set at the moment when the wireless link failure event predicted by the terminal device is triggered. The beam measurement result corresponding to the beam with the best beam measurement result in the second beam set at the moment when the wireless link failure event predicted by the terminal device is triggered; The cell-level measurement results of the serving cell at the tenth moment actually measured by the terminal device; The cell-level measurement results of the serving cell at the moment when the wireless link failure event predicted by the terminal device is triggered; The eighth information is used to indicate the length of the time interval between the time when the terminal device predicts the wireless link failure event and the time when the fifth information is reported; The second beam set is either the beam set used by the terminal device to perform the wireless link failure monitoring task or the beam set composed of reference beams indicated in the cell configuration corresponding to one or more LTM candidate cells.

48. The method of claim 43 or 46, wherein, The seventh piece of information includes one or more of the following: The beam identification information corresponding to the top K beams with the best beam measurement results in the second beam set at the tenth moment, as actually measured by the terminal device; The beam measurement results corresponding to the top K beams with the best beam measurement results in the second beam set at the tenth moment, as actually measured by the terminal device; The beam identification information corresponding to the top K beams with the best beam measurement results in the second beam set at the time when the wireless link failure event predicted by the terminal device is triggered; The beam measurement results corresponding to the top K beams with the best beam measurement results in the second beam set at the time when the wireless link failure event predicted by the terminal device is triggered. The cell-level measurement results of the serving cell at the tenth moment actually measured by the terminal device; The cell-level measurement results of the serving cell at the moment when the wireless link failure event predicted by the terminal device is triggered; The eighth information is used to indicate the length of the time interval between the time when the terminal device predicts the wireless link failure event and the time when the fifth information is reported; Where K is a positive integer, and the second beam set is either the beam set used by the terminal device to perform the wireless link failure monitoring task or the beam set composed of reference beams indicated in the cell configuration corresponding to one or more LTM candidate cells.

49. The method of claim 47 or 48, wherein, The seventh information also includes one or more of the following: The PCI and / or frequency point information of the beam associated with the best beam measurement result in the second beam set at the tenth moment, as actually measured by the terminal device; The PCI and / or frequency information associated with the beam with the best beam measurement result in the second beam set at the moment when the wireless link failure event predicted by the terminal device is triggered. The PCI and / or frequency information associated with the top K beams with the best beam measurement results in the second beam set at the tenth moment, as actually measured by the terminal device; The PCI and / or frequency information associated with the top K beams in the second beam set with the best beam measurement results at the time when the wireless link failure event predicted by the terminal device is triggered.

50. The method of any one of claims 43-49, wherein, The method further includes: The network device receives third capability information sent by the terminal device. The third capability information is used to indicate whether the terminal device supports the wireless link failure event prediction function and / or to indicate whether the terminal device supports the function of autonomously triggering LTM handover before receiving the LTM handover command sent by the network device.

51. A terminal device, comprising: include: The execution module is used to execute preset behaviors if the first event is satisfied. Wherein, the first event is related to a low-layer triggered mobility LTM handover, or the first event is related to LTM handover and the aforementioned event. The preset behavior is related to the wireless link failure event predicted by the terminal device and is related to LTM handover.

52. A network device, comprising: include: A sending unit is used to send configuration information to a terminal device, the configuration information being related to a first event and / or a preset behavior; The first event is related to a low-layer triggered mobility LTM handover, or the first event is related to LTM handover and a radio link failure event predicted by the terminal device, and the preset behavior is related to LTM handover.

53. A terminal device, comprising: It includes a memory and a processor, the memory being used to store a program, and the processor being used to invoke the program in the memory to cause the terminal device to perform the method as described in any one of claims 1-32.

54. A network device, comprising: The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or transmit signals so that the network device performs the method as described in any one of claims 33-50.

55. An apparatus comprising: Includes a processor for calling a program from memory to cause the device to perform the method as described in any one of claims 1-50.

56. A chip, comprising: Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1-50.

57. A computer-readable storage medium, comprising: It contains a program that causes a computer to perform the method as described in any one of claims 1-50.

58. A computer program product, characterised in that, Includes a program that causes a computer to perform the method as described in any one of claims 1-50.

59. A computer program characterised in that, The computer program causes a computer to perform the method of any one of claims 1-50.

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