Operation execution method and apparatus, information receiving method and apparatus, and related device

Abstract

The present application relates to the technical field of communications. Disclosed are an operation execution method and apparatus, an information receiving method and apparatus, and a related device. The operation execution method in the embodiments of the present application comprises: a terminal executing a first operation, wherein the execution of the first operation comprises at least one of the following: sending first information to a first cell when the terminal triggers the execution of a conditional layer-1 or layer-2 triggered mobility (LTM), which first information comprises at least one of the following: first indication information, selected beam information, and information of an activated transmission configuration indicator (TCI) state, the first indication information being used for indicating that the terminal has triggered the conditional LTM, and the first cell being a serving cell for the terminal before a conditional LTM handover is successful; and when the terminal has triggered the execution of the conditional LTM, on the basis of whether a first time alignment timer (TAT) expires, determining a process of executing the conditional LTM, which first TAT is a started TAT.

Description

Operation execution method, information receiving method, device and related equipment

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202510119441.1, filed in China on January 24, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of communication technology, specifically relating to an operation execution method, an information receiving method, an apparatus, and related equipment. Background Technology

[0004] In related technologies, for traditional Layer 1 or Layer 2 triggered mobility (LTM), network-side devices can trigger LTM based on the terminal's measurement reports. However, for conditional LTM, execution events are predefined; when the event is met, the terminal does not report measurements and directly executes LTM. Since the terminal is unaware of how to operate under conditional LTM triggering, the probability of conditional LTM execution failure is relatively high. Summary of the Invention

[0005] This application provides an operation execution method, an information receiving method, an apparatus, and related equipment, which can solve the problem of a high probability of terminal execution condition LTM failure.

[0006] Firstly, an operation execution method is provided, the method comprising:

[0007] The terminal performs the first operation;

[0008] The execution of the first operation includes at least one of the following:

[0009] When the terminal triggers the execution of conditional LTM triggered by layer 1 or layer 2, first information is sent to the first cell, wherein the first information includes at least one of the following: first indication information, selected beam information, and information indicating the active transmission configuration (TCI) status. The first indication information is used to indicate that the terminal has triggered conditional LTM, and the first cell is the serving cell of the terminal before the conditional LTM handover was successful.

[0010] When the terminal triggers the execution condition LTM, the process of determining the execution condition LTM is based on whether the first time calibration timer TAT has expired, wherein the first TAT is the TAT that has been started.

[0011] Secondly, an information receiving method is provided, the method comprising:

[0012] The second network node receives second information sent by the first network node, the second information including at least one of the following: information on the activated TCI state, and information on the deactivated TCI state;

[0013] The second network node includes a second cell, which is a candidate cell for the terminal to use for conditional LTM handover. The first network node includes a first cell, which is the serving cell of the terminal before the conditional LTM handover is successful.

[0014] Thirdly, an operation execution method is provided, the method comprising:

[0015] The first network node performs the second operation, and the first network node includes a first cell, which is the serving cell of the terminal before the conditional LTM handover is successful.

[0016] The execution of the second operation includes at least one of the following:

[0017] Send second information to multiple second network nodes respectively, the second information including at least one of the following: information on the activated TCI state, information on the deactivated TCI state;

[0018] Send the information about the activated TCI state to the second network node associated with the activated TCI state;

[0019] Send the deactivated TCI state information to the second network node associated with the deactivated TCI state;

[0020] The receiving terminal sends first information, which includes at least one of the following: first indication information, selected beam information, and activated TCI status information, wherein the first indication information is used to indicate that the terminal has triggered conditional LTM;

[0021] The second network node includes a second cell, which is a candidate cell for conditional LTM handover of the terminal.

[0022] Fourthly, an operation execution device is provided, comprising:

[0023] The processing module is used to perform the first operation;

[0024] The execution of the first operation includes at least one of the following:

[0025] When the terminal triggers the execution of conditional LTM triggered by layer 1 or layer 2, first information is sent to the first cell, wherein the first information includes at least one of the following: first indication information, selected beam information, and information indicating the active transmission configuration (TCI) status. The first indication information is used to indicate that the terminal has triggered conditional LTM, and the first cell is the serving cell of the terminal before the conditional LTM handover was successful.

[0026] When the terminal triggers the execution condition LTM, the process of determining the execution condition LTM is based on whether the first time calibration timer TAT has expired, wherein the first TAT is the TAT that has been started.

[0027] Fifthly, an information receiving device is provided, comprising:

[0028] The receiving module is configured to receive second information sent by the first network node through the second cell, the second information including at least one of the following: information on the activated TCI state and information on the deactivated TCI state;

[0029] Wherein, the second cell is a candidate cell for the terminal for conditional LTM handover, and the first network node includes a first cell, which is the serving cell of the terminal before the conditional LTM handover is successful.

[0030] Sixthly, an operation execution device is provided, comprising:

[0031] The processing module is used to perform the second operation through the first cell, which is the serving cell of the terminal before the conditional LTM handover is successful;

[0032] The execution of the second operation includes at least one of the following:

[0033] Send second information to multiple second network nodes respectively, the second information including at least one of the following: information on the activated TCI state, information on the deactivated TCI state;

[0034] Send the information about the activated TCI state to the second network node associated with the activated TCI state;

[0035] Send the deactivated TCI state information to the second network node associated with the deactivated TCI state;

[0036] The receiving terminal sends first information, which includes at least one of the following: first indication information, selected beam information, and activated TCI status information, wherein the first indication information is used to indicate that the terminal has triggered conditional LTM;

[0037] The second network node includes a second cell, which is a candidate cell for conditional LTM handover of the terminal.

[0038] In a seventh aspect, an operation execution apparatus is provided, the apparatus being configured to perform the steps of the method described in the first aspect.

[0039] Eighthly, an information receiving apparatus is provided, the apparatus being configured to perform the steps of the method described in the second aspect.

[0040] A ninth aspect provides an operation execution apparatus configured to perform the steps of the method described in the third aspect.

[0041] In a tenth aspect, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0042] Eleventhly, a terminal is provided, including a processor and a communication interface, wherein,

[0043] The processor is used to perform the first operation;

[0044] The execution of the first operation includes at least one of the following:

[0045] When the terminal triggers the execution of conditional LTM triggered by layer 1 or layer 2, first information is sent to the first cell, wherein the first information includes at least one of the following: first indication information, selected beam information, and information indicating the active transmission configuration (TCI) status. The first indication information is used to indicate that the terminal has triggered conditional LTM, and the first cell is the serving cell of the terminal before the conditional LTM handover was successful.

[0046] When the terminal triggers the execution condition LTM, the process of determining the execution condition LTM is based on whether the first time calibration timer TAT has expired, wherein the first TAT is the TAT that has been started.

[0047] In a twelfth aspect, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the second or third aspect.

[0048] In a thirteenth aspect, a network-side device is provided, which is a second network node, including a processor and a communication interface, wherein...

[0049] A communication interface is used to receive second information sent by a first network node, the second information including at least one of the following: information on the activated TCI state and information on the deactivated TCI state;

[0050] The second network node includes a second cell, which is a candidate cell for the terminal to use for conditional LTM handover. The first network node includes a first cell, which is the serving cell of the terminal before the conditional LTM handover is successful.

[0051] In a fourteenth aspect, a network-side device is provided, the network-side device being a first network node, including a processor and a communication interface, wherein...

[0052] A communication interface is used to perform a second operation, wherein the first network node includes a first cell, which is the serving cell of the terminal before the conditional LTM handover is successful.

[0053] The execution of the second operation includes at least one of the following:

[0054] Send second information to multiple second network nodes respectively, the second information including at least one of the following: information on the activated TCI state, information on the deactivated TCI state;

[0055] Send the information about the activated TCI state to the second network node associated with the activated TCI state;

[0056] Send the deactivated TCI state information to the second network node associated with the deactivated TCI state;

[0057] The receiving terminal sends first information, which includes at least one of the following: first indication information, selected beam information, and activated TCI status information, wherein the first indication information is used to indicate that the terminal has triggered conditional LTM;

[0058] The second network node includes a second cell, which is a candidate cell for conditional LTM handover of the terminal.

[0059] In a fifteenth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or the steps of the method described in the second aspect, or the steps of the method described in the third aspect.

[0060] In a sixteenth aspect, a wireless communication system is provided, comprising: a terminal, a first network node, and a second network node; or comprising a terminal and a first network node; or comprising a first network node and a second network node. The terminal may be used to perform the steps of the method described in the first aspect, the second network node may be used to perform the steps of the method described in the second aspect, and the first network node may be used to perform the steps of the method described in the third aspect.

[0061] In a seventeenth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the steps of the method described in the first aspect, or the steps of the method described in the second aspect, or the steps of the method described in the third aspect.

[0062] In a thirteenth aspect, a computer program / program product is provided, the computer program / program product being stored in a storage medium, the computer program / program product being executed by at least one processor to implement the steps of the method as described in the first aspect, or the steps of the method as described in the second aspect, or the steps of the method as described in the third aspect.

[0063] In this embodiment of the application, when the terminal triggers the execution of conditional LTM, the network-side device can know that the terminal has triggered the execution of conditional LTM by sending the first information, which facilitates the network-side device to schedule the terminal and reduces the probability of the terminal failing to execute conditional LTM; and / or, when the terminal triggers the execution of conditional LTM, the terminal determines the execution process of conditional LTM based on whether the first TAT has timed out, so that the terminal can execute conditional LTM based on RACH-less process or RACH-based process by judging whether the first TAT has timed out, which can improve the probability of the terminal successfully executing conditional LTM. Attached Figure Description

[0064] Figure 1 is a block diagram of a wireless communication system applicable to an embodiment of this application;

[0065] Figure 2 is a schematic diagram of an LTM process in related technologies;

[0066] Figure 3 is a flowchart of an operation execution method provided in an embodiment of this application;

[0067] Figure 4 is a schematic diagram of an LTM process provided in an embodiment of this application;

[0068] Figure 5 is a flowchart of an information receiving method provided in an embodiment of this application;

[0069] Figure 6 is a flowchart of an operation execution method provided in an embodiment of this application;

[0070] Figure 7 is a schematic diagram of an operation execution device provided in an embodiment of this application;

[0071] Figure 8 is a schematic diagram of the structure of an information receiving device provided in an embodiment of this application;

[0072] Figure 9 is a schematic diagram of an operation execution device provided in an embodiment of this application;

[0073] Figure 10 is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0074] Figure 11 is a schematic diagram of the structure of a terminal provided in an embodiment of this application;

[0075] Figure 12 is one of the structural schematic diagrams of a network-side device provided in an embodiment of this application;

[0076] Figure 13 is a second schematic diagram of the structure of a network-side device provided in an embodiment of this application. Detailed Implementation

[0077] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0078] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0079] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as the sender explicitly informing the receiver of specific information, the required operation, or the requested result in the instruction sent. An indirect instruction can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the required operation or requested result based on the judgment result.

[0080] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used in the systems and radio technologies mentioned above, as well as in other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th Generation (6G) communication systems.

[0081] Figure 1 shows a block diagram of a wireless communication system applicable to an embodiment of this application. The wireless communication system includes a terminal 101 and a network-side device 102. The terminal 101 can also be referred to as User Equipment (UE), and can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home (home devices with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game console, personal computer (PC), ATM, or self-service machine, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. It should be noted that the specific type of terminal 101 is not limited in this application embodiment. Network-side equipment 102 may include access network equipment or core network equipment, wherein access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, or radio access network unit. Access network equipment may include base stations, Wireless Local Area Network (WLAN) access points (APs), or Wireless Fidelity (WiFi) nodes, etc.Among them, base stations can be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmission and Reception Point (TRP), and Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform). The term "base station" can be any suitable term in the field, such as "station" or any other appropriate term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to specific technical terms. It should be noted that the embodiments of this application only use the base station in the NR system as an example for introduction, and do not limit the specific type of base station.

[0082] Core network equipment, also known as core network nodes, core network functions, or core network elements, includes, but is not limited to, at least one of the following: Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), and Binding Support. Functions include BSF, Application Function (AF), Location Management Function (LMF), Gateway Mobile Location Centre (GMLC), Network Data Analytics Function (NWDAF), and Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform station).It should be noted that the embodiments of this application only use the core network equipment in the NR system as an example for introduction, and do not limit the specific type of core network equipment. If the name of the core network equipment mentioned in the embodiments of this application changes in subsequent protocol versions (e.g., 6G), it is also within the scope of protection of this application.

[0083] Optionally, the core network equipment can be implemented by one or more functional modules in a single device, or by multiple devices working together; this application does not specifically limit this. It is understood that the aforementioned functional modules can be network elements in hardware devices, software functional modules running on dedicated hardware, or virtualized functional modules instantiated on a platform (e.g., a cloud platform).

[0084] For ease of understanding, the following explains some aspects of the embodiments of this application:

[0085] 1. LTM measurement configuration and reporting configuration

[0086] LTM refers to Layer 1 / L2 triggered mobility. The serving base station determines the target cell based on the UE's Layer 1 (L1) measurements and uses the Medium Access Control (MAC) Control Element (CE) to trigger the UE to hand over the primary cell or primary / secondary cell (or primary / secondary cell group) to the target cell (or target cell group). During LTM, the network sends a Radio Resource Control (RRC) message in advance, which contains multiple candidate configuration information and multiple LTM Channel State Information (CSI) resource configuration information. Each LTM CSI resource configuration information includes one or more reference signals (RS) resources from one or more LTM candidate cells, i.e., one or more candidate configuration identifiers (IDs) and corresponding Synchronization Signal Block (SSB) indices.

[0087] In addition, the UE's serving cell configuration also includes one or more LTM-related CSI reporting configurations, each of which contains the following information:

[0088] LTM CSI reports configuration identifier;

[0089] LTM CSI resource configuration identifier;

[0090] LTM reporting configuration types include periodic reporting / semi-persistent reporting based on the Physical Uplink Control Channel (PUCCH) and their corresponding reporting resources;

[0091] The LTM report includes the number of candidate cells reported by LTM CSI and the number of RS reported by each cell.

[0092] Each LTM CSI reporting configuration is associated with one LTM CSI resource configuration information. The UE uses the reporting type and reporting resources in this LTM CSI reporting configuration to report the L1 measurement results of N RSs of M candidate cells in the LTM CSI resource configuration information.

[0093] 2. LTM Process

[0094] To reduce handover latency, LTM (Level 1 Measuring) is introduced. The Distributed Unit (DU) uses L1 / L2 signaling to instruct the terminal to hand over to a suitable candidate cell based on the Layer 1 measurement results reported by the terminal. LTM only supports handover within the same Centralized Unit (CU). The process is shown in Figure 2.

[0095] In step (4a), the UE will perform downlink synchronization. That is, before receiving the cell switch command in step (6), the UE will activate and deactivate the Transmission Configuration Indicator (TCI) state of the candidate cell based on the network side's indication.

[0096] 3. Event-triggered L1 measurement reporting

[0097] To reduce the excessive measurement reporting caused by periodic or semi-persistent reporting in traditional LTM, event-triggered LTM reporting mechanisms have been introduced. Events used for event-triggered L1 reporting include:

[0098] Event 2: When the measurement result of the current beam of the serving cell is <= the second threshold;

[0099] Event 3: When the measurement result of the candidate beam of the candidate cell is greater than or equal to the measurement result of the current beam of the serving cell, and the difference is greater than or equal to the first offset value;

[0100] Event 4: When the measurement result of the candidate beam of the candidate cell is >= the third threshold;

[0101] Event 5: When the measurement result of the current beam of the serving cell is <= the fourth threshold and the measurement result of the candidate beam of the candidate cell is >= the fifth threshold.

[0102] When the corresponding event meets the conditions, the UE will use MAC CE to report the measurement results and notify the base station of the measurement results of the beam corresponding to the candidate cell, which is used by the base station to decide whether to trigger LTM, etc.

[0103] 4. Conditional LTM

[0104] Conditional LTM refers to a process where, by pre-defining execution events, when the event is met, the UE does not report measurements but directly performs LTM, i.e., performs cell / beam handover.

[0105] The operation execution method, information receiving method, apparatus and related equipment provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0106] Referring to Figure 3, which is a flowchart of an operation execution method provided in an embodiment of this application, the operation execution method includes the following steps:

[0107] Step 11: The terminal performs the first operation;

[0108] The execution of the first operation includes at least one of the following:

[0109] When the terminal triggers the execution of conditional LTM triggered by layer 1 or layer 2, first information is sent to the first cell, wherein the first information includes at least one of the following: first indication information, selected beam information, and information indicating the active transmission configuration (TCI) status. The first indication information is used to indicate that the terminal has triggered conditional LTM, and the first cell is the serving cell of the terminal before the conditional LTM handover was successful.

[0110] When the terminal triggers the execution condition LTM, the process of determining the execution condition LTM is based on whether the first time alignment timer (TAT) has timed out, wherein the first TAT is the TAT that has been started.

[0111] The first indication information may be an identifier used to identify that the terminal has triggered condition LTM; or, the first indication information may be implicitly carried through a dedicated message used to indicate that the terminal has triggered condition LTM; or, the first indication information may be a specific value, and when the message carries the specific value, it indicates that the terminal has triggered condition LTM; etc. This embodiment does not limit the specific form of the first indication information.

[0112] In one implementation, the terminal sending first information to the first cell may refer to the terminal sending first information to the first network node, where the first network node includes the first cell.

[0113] In one embodiment, after the terminal sends first information to the first cell, the first cell sends the activated TCI status information to multiple candidate cells or candidate cells associated with the activated TCI status. The candidate cells that receive the activated TCI status information perform dynamic grant (DG) scheduling and / or reserved / activated configured grant (CG) resources based on the activated TCI status information.

[0114] In one embodiment, when the terminal triggers the execution condition LTM, the terminal sends first information to the first cell; the terminal determines the execution condition LTM process based on whether the first time alignment timer (TAT) has timed out.

[0115] In one embodiment, when the terminal triggers the execution condition LTM, the terminal determines the execution condition LTM process based on whether the timing advance (TA) associated with the beam selected by the terminal is the TA sent by the first cell and whether the first TAT has timed out.

[0116] In one embodiment, when the terminal triggers the execution condition LTM, the terminal determines the execution condition LTM process based on whether the TCI state of the beam association selected by the terminal is an active TCI state and whether the first TAT has timed out.

[0117] In one embodiment, when the terminal triggers the execution condition LTM, the terminal determines the execution condition LTM process based on whether the TCI state associated with the beam selected by the terminal is an active TCI state, whether the TA associated with the beam selected by the terminal is a TA sent by the first cell, and whether the first TAT has timed out.

[0118] For example, if the TA associated with the beam selected by the terminal is the TA sent by the first cell, the TCI state associated with the beam selected by the terminal is an active TCI state, and the first TAT has not timed out, a conditional LTM based on a non-random access channel-less (RACH-less) procedure is executed.

[0119] In one implementation, when the terminal triggers the execution condition LTM, the terminal determines the execution condition LTM process based on whether the first TAT has timed out, wherein the first TAT is an already started TAT.

[0120] The terminal can determine whether the first TAT has timed out based on a comparison between the runtime of the first TAT and a first threshold. The first threshold can be predefined by the protocol or preconfigured by the network-side device; this embodiment does not limit the first threshold.

[0121] In one implementation, the process of determining the execution condition LTM based on whether the first TAT has timed out can be understood or replaced as determining the execution condition LTM of different processes based on whether the first TAT has timed out; or determining the type of execution condition LTM based on whether the first TAT has timed out; or determining the execution of different types of condition LTM based on whether the first TAT has timed out.

[0122] In one embodiment, the method further includes: the terminal performing a conditional LTM based on the beam corresponding to the activated TCI state; and the terminal determining that the conditional LTM was successfully executed when the terminal receives uplink grant resources for the transmission of the first Physical Uplink Shared Channel (PUSCH).

[0123] In one implementation, when the terminal triggers the execution condition LTM, the terminal executes the condition LTM based on a comparison result between the runtime of the started TAT and a first threshold in the TAT configuration.

[0124] For example, if the timeout of the initiated TAT is determined based on a comparison between the runtime of the initiated TAT and a first threshold in the TAT configuration, a conditional LTM based on a random access channel (RACH)-based procedure is performed.

[0125] If it is determined that the started TAT has not timed out based on a comparison between the runtime of the started TAT and a first threshold in the TAT configuration, a conditional LTM based on the RACH-less procedure is executed.

[0126] In addition, the activated TAT can be the activated TAT corresponding to the target candidate cell, and the TAT configuration can be the TAT configuration of the target candidate cell.

[0127] or,

[0128] The activated TAT can be the activated TAT corresponding to the Timing Advance Group (TAG) where the target candidate cell is located, and the TAT configuration can be the TAT configuration of the TAG where the target candidate cell is located.

[0129] The target candidate cell is a candidate cell that has at least one beam that satisfies the measurement event and triggers conditional LTM execution.

[0130] In one implementation, sending information to the first cell means sending information to a first network node (such as a CU or DU); sending information to the second cell means sending information to a second network node (such as a CU or DU); receiving information in the first cell means that the first network node receives information; receiving information in the second cell means that the second network node receives information; the first network node includes the first cell, and the second network node includes the second cell.

[0131] In related technologies, for traditional LTM, the network side can ultimately trigger the UE to perform LTM based on information such as UE measurement reports. After LTM is triggered, candidate cells can use dynamic grant resources to schedule the UE, or the UE can use a pre-associated configured grant (CG) to send uplink data. However, in conditional LTM, the network side is unaware of when the terminal triggers the LTM execution process. In this embodiment, when the terminal triggers conditional LTM, the terminal sends first information to the first cell, so that the network-side device can know that the terminal has triggered conditional LTM, facilitating the network-side device to schedule the terminal.

[0132] In this embodiment of the application, when the terminal triggers the execution of conditional LTM, the network-side device can know that the terminal has triggered the execution of conditional LTM by sending the first information, which facilitates the network-side device to schedule the terminal and reduces the probability of the terminal failing to execute conditional LTM; and / or, when the terminal triggers the execution of conditional LTM, the terminal determines the execution process of conditional LTM based on whether the first TAT has timed out, so that the terminal can execute conditional LTM based on RACH-less process or RACH-based process by judging whether the first TAT has timed out, which can improve the probability of the terminal successfully executing conditional LTM.

[0133] Optionally, the process of determining the execution condition LTM based on whether the first TAT has timed out includes at least one of the following:

[0134] If the first TAT has not timed out, execute the conditional LTM based on the RACH-less procedure;

[0135] If the first TAT times out, a conditional LTM based on the random access channel (RACH) procedure is executed.

[0136] In one implementation, the first TAT is the activated TAT corresponding to the target candidate cell. By determining whether the activated TAT corresponding to the target candidate cell has timed out, the execution of conditional LTM based on RACH-less or RACH-based procedures can be determined, which can improve the probability of the terminal successfully executing conditional LTM. Furthermore, if the first TAT has not timed out, the execution of conditional LTM based on RACH-less procedures can reduce access latency.

[0137] In one implementation, the first TAT is the first activated TAT corresponding to the TAG where the target candidate cell is located. By determining whether the activated first TAT corresponding to the TAG where the target candidate cell is located has timed out, the execution of conditional LTM based on RACH-less or RACH-based procedures can be determined, which can improve the probability of the terminal successfully executing conditional LTM. Moreover, if the first TAT has not timed out, the execution of conditional LTM based on RACH-less procedures can reduce access latency.

[0138] It should be noted that if the first TAT does not time out, the TA associated with the first TAT is valid, and the terminal can perform the RACH-less process based on the TA associated with the first TAT.

[0139] In this embodiment of the application, when the first TAT has not timed out, a conditional LTM based on the RACH-less procedure is executed, thereby enabling the conditional LTM based on the RACH-less procedure to be executed when the TA associated with the first TAT is valid, which can reduce access latency.

[0140] Optionally, the process of determining the execution condition LTM based on whether the first TAT has timed out includes at least one of the following:

[0141] If the timing advance (TA) associated with the beam selected by the terminal is the TA transmitted by the first cell, and the first TA has not timed out, then conditional LTM based on the RACH-less procedure is executed.

[0142] If the TA associated with the beam selected by the terminal is not the TA sent by the first cell, or if the first TAT times out, a conditional LTM based on a RACH-based procedure is executed.

[0143] Wherein, the TA sent by the first cell can be the TA sent by the first cell through the target MAC CE, and the first TAT is associated with the TA carried by the target MAC CE.

[0144] In one implementation, the UE receives a MAC CE sent by a first cell, the MAC CE including at least a TA value; after receiving the TA value, the UE initiates TAT; when performing conditional LTM, if the TA associated with the beam selected by the UE is a TA sent to the UE by the first cell through the MAC CE, and the TAT has not timed out, then the UE performs conditional LTM of the RACH-less procedure, otherwise it performs conditional LTM of the RACH-based procedure.

[0145] In this embodiment of the application, when the TA associated with the beam selected by the terminal is the TA sent by the first cell and the first TAT has not timed out, a conditional LTM based on the RACH-less procedure is executed, so that the terminal can perform the RACH-less procedure based on the TA associated with the beam selected by the terminal, thereby reducing access latency.

[0146] Optionally, the method further includes:

[0147] When the terminal receives the Target Media Access Control Unit (MAC CE) sent by the first cell, the terminal initiates the first TAT;

[0148] The target MAC CE carries a TA.

[0149] The first TAT is associated with the TA carried by the target MAC CE. The TA carried by the target MAC CE can be the TA of the target candidate cell.

[0150] In one implementation, a candidate cell is configured with a timing advance (TA) timer. The TA timer is configured in the Radio Resource Control (RRC) reconfiguration of the candidate cell. When the UE receives the TA value in the early TA process, the TA is started. The UE performs conditional LTM and applies the candidate cell configuration. Based on the TA configuration in the candidate cell, it determines whether a timeout has occurred. If a timeout occurs, a RACH-based process is performed; otherwise, a RACH-less process is performed.

[0151] In this embodiment of the application, when the terminal receives the target MAC CE carrying the TA sent by the first cell, the terminal initiates the first TAT, thereby enabling the TAT corresponding to the candidate cell to be initiated through the target MAC CE carrying the TA sent by the serving cell. Thus, the terminal can determine whether to execute conditional LTM based on RACH-less or RACH-based procedures based on whether the TAT corresponding to the candidate cell has timed out, thereby increasing the probability of the terminal successfully executing conditional LTM.

[0152] Optionally, the method further includes:

[0153] The terminal determines whether the first TAT has timed out based on a comparison between the runtime of the first TAT and a first threshold in the TAT configuration.

[0154] The first threshold can be a threshold used to determine whether the TAT has timed out.

[0155] In one implementation, if the runtime of the first TAT is greater than a first threshold in the TAT configuration, the terminal determines that the first TAT has timed out; and / or, if the runtime of the first TAT is less than or equal to the first threshold in the TAT configuration, the terminal determines that the first TAT has not timed out.

[0156] In one implementation, if the runtime of the first TAT is greater than or equal to a first threshold in the TAT configuration, the terminal determines that the first TAT has timed out; and / or, if the runtime of the first TAT is less than the first threshold in the TAT configuration, the terminal determines that the first TAT has not timed out.

[0157] In this embodiment, the terminal determines whether the first TAT has timed out based on the comparison result between the runtime of the first TAT and the first threshold in the TAT configuration. Thus, the terminal can determine whether the first TAT has timed out by judging whether the runtime of the first TAT exceeds the first threshold in the TAT configuration, and then determine whether to execute conditional LTM based on RACH-less or RACH-based procedures by judging whether the first TAT has timed out, which can improve the probability of the terminal successfully executing conditional LTM; and when the first TAT has not timed out, executing conditional LTM based on RACH-less procedures can reduce access latency.

[0158] Optionally, the TAT configuration is the TAT configuration of the target candidate cell;

[0159] or,

[0160] The TAT configuration is the TAT configuration of the timing advance group TAG to which the target candidate cell belongs;

[0161] The target candidate cell is a candidate cell that has at least one beam that satisfies the measurement event, and the measurement event is used to trigger conditional LTM execution.

[0162] It should be noted that at least one beam in the target candidate cell satisfies the measurement event, thereby triggering the terminal to perform conditional LTM.

[0163] It should be noted that each candidate cell can correspond to a TAT configuration, which is the TAT configuration of the target candidate cell; or, each TAG can correspond to a TAT configuration, which is the TAT configuration of the TAG where the target candidate cell is located.

[0164] In this embodiment of the application, by configuring the TAT appropriately, it can be ensured that the RACH-less process can be performed correctly during the execution of the conditional LTM, thereby reducing access latency.

[0165] Optionally, the first TAT is the TAT that has been activated for the target candidate cell;

[0166] or,

[0167] The first TAT is the activated TAT corresponding to the TAG of the target candidate cell;

[0168] The target candidate cell is a candidate cell that has at least one beam that satisfies the measurement event, and the measurement event is used to trigger conditional LTM execution.

[0169] It should be noted that each candidate cell can correspond to a TAT, and the first TAT is the TAT that has been activated for the target candidate cell; or, each TAG can correspond to a TAT, and the first TAT is the TAT that has been activated for the TAG where the target candidate cell is located.

[0170] Optionally, the method further includes:

[0171] The terminal receives the configuration of the target candidate cell sent by the first cell, and the configuration of the target candidate cell includes at least one of the TAT configuration and the TAG identifier (ID) configuration;

[0172] The target candidate cell is a candidate cell that has at least one beam that satisfies the measurement event, and the measurement event is used to trigger conditional LTM execution.

[0173] The configuration of the target candidate cell may be generated by the first cell; or the configuration of the target candidate cell may be generated by another candidate cell; this embodiment of the application does not limit this. For example, the configuration of the target candidate cell is generated by the target candidate cell itself. After generating the configuration, the target candidate cell sends the configuration to the first cell, which then forwards the configuration to the terminal.

[0174] In this embodiment, the terminal receives the configuration of the target candidate cell sent by the first cell. The configuration of the target candidate cell includes at least one of the TAT configuration and the TAG identifier ID configuration. Thus, the terminal can determine whether the first TAT has timed out based on the configuration of the target candidate cell, and then determine whether to execute conditional LTM based on RACH-less or RACH-based procedures by judging whether the first TAT has timed out. This can improve the probability of the terminal successfully executing conditional LTM. Moreover, if the first TAT has not timed out, executing conditional LTM based on RACH-less procedures can reduce access latency.

[0175] Optionally, the process of determining the execution condition LTM based on whether the first TAT has timed out includes at least one of the following:

[0176] If the TCI state of the beam association selected by the terminal is an active TCI state and the first TAT has not timed out, a conditional LTM based on the RACH-less procedure is executed.

[0177] If the TCI state of the beam association selected by the terminal is not an active TCI state, or if the first TAT times out, a conditional LTM based on a RACH-based procedure is executed.

[0178] In this embodiment, the terminal determines whether to execute a conditional LTM based on a RACH-less procedure or a RACH-based procedure based on whether the selected beam association's TCI state is an active TCI state and whether the first TAT has timed out. This can increase the probability of the terminal successfully executing the conditional LTM. Furthermore, when the selected beam association's TCI state is an active TCI state and the first TAT has not timed out, executing a conditional LTM based on a RACH-less procedure can reduce access latency.

[0179] Optionally, the method further includes:

[0180] The terminal selects a beam;

[0181] If the selected beam association TCI state is not an active TCI state, the terminal performs a conditional LTM based on a RACH-based procedure; and / or,

[0182] When the selected beam association TCI state is an active TCI state, the terminal performs a conditional LTM based on the RACH-less procedure.

[0183] In this embodiment, when the TCI state of the beam association selected by the terminal is not an active TCI state, the terminal performs a conditional LTM based on a RACH-based procedure; and / or, when the TCI state of the beam association selected by the terminal is an active TCI state, the terminal performs a conditional LTM based on a RACH-less procedure. Thus, the terminal determines whether to perform a conditional LTM based on a RACH-less procedure or a RACH-based procedure based on whether the selected TCI state is active, which increases the probability of successful conditional LTM execution. Furthermore, performing a conditional LTM based on a RACH-less procedure when the selected TCI state is active reduces access latency.

[0184] Optionally, the method further includes:

[0185] When the terminal triggers the execution of conditional LTM, the MAC layer of the terminal sends a second indication message to the Radio Resource Control (RRC) layer of the terminal. The second indication message is used to indicate that the terminal has triggered the execution of conditional LTM.

[0186] In this embodiment of the application, when the terminal triggers the execution of conditional LTM, the MAC layer of the terminal sends a second indication information to the Radio Resource Control (RRC) layer of the terminal, so that the RRC layer of the terminal can know through the second indication information that the terminal has triggered conditional LTM execution, and then can perform the relevant operations of conditional LTM.

[0187] Optionally, the second indication information includes at least one of the following:

[0188] The configuration ID of the target candidate cell;

[0189] The TA value of the target candidate cell;

[0190] TAG ID of the target candidate cell;

[0191] Information related to the selected beam;

[0192] The target candidate cell is a candidate cell that has at least one beam that satisfies the measurement event, and the measurement event is used to trigger conditional LTM execution.

[0193] The relevant information of the selected beam may include beam identifier, whether the beam TCI state is activated, and other information related to the selected beam. This embodiment does not limit the relevant information of the selected beam.

[0194] The following examples will provide further explanation:

[0195] In the examples below, "serving cell sending information" can be understood as the network node (such as CU or DU) corresponding to the serving cell sending information; "serving cell receiving information" can be understood as the network node corresponding to the serving cell receiving information. "Candidate cell sending information" can be understood as the network node (such as CU or DU) corresponding to the candidate cell sending information; "candidate cell receiving information" can be understood as the network node corresponding to the candidate cell receiving information. The interaction between the network node corresponding to the serving cell and the network node corresponding to the candidate cell can be between the CU corresponding to the serving cell and the CU corresponding to the candidate cell, or between the DU corresponding to the serving cell and the DU corresponding to the candidate cell, and the interaction between DUs can be performed through the same CU (e.g., under the same CU).

[0196] Example 1:

[0197] Case 1:

[0198] Step (1): The network-side device sends the conditional LTM-related configuration to the UE.

[0199] Step (2): The network-side device activates and / or deactivates one or more TCI states of the LTM candidate cells.

[0200] Step (3): The serving cell (e.g., the first cell) notifies all candidate cells of the information of activated and / or deactivated TCI states, and the candidate cells (e.g., the second cell) perform dynamic resource scheduling on the beams associated with these TCI states; or, the serving cell only notifies all candidate cells associated with activated TCI states of the information of activated TCI states, and only notifies all candidate cells associated with deactivated TCI states of the information of deactivated TCI states.

[0201] Step (4): The UE performs event evaluation based on the conditional LTM configuration. When the event is satisfied, the UE triggers LTM execution.

[0202] Step (5): The UE selects only the TCI-activated beams for transmission and / or reception and performs the RACH-less procedure. When the UE receives an uplink (UL) grant for the first PUSCH transmission, the LTM procedure is considered to be successfully completed; or, the UE selects a beam based on the implementation. If the TCI state associated with the beam selected by the UE is not the previously activated TCI state, the UE performs RACH-based LTM; otherwise, it performs RACH-based LTM.

[0203] Step (6): Optionally, the new serving cell (such as the target cell) to which the UE accesses notifies the original serving cell (such as the first cell), and the original serving cell notifies all original candidate cells (i.e., the candidate cells in step (3)) that LTM has been successfully executed, and the original candidate cells stop performing dynamic resource scheduling on the beam associated with the TCI state in step (3).

[0204] Optionally, the new serving cell may notify other candidate cells that the UE has successfully accessed the network, and the other candidate cells may automatically stop dynamic resource scheduling on the beam associated with the TCI state.

[0205] Case 2:

[0206] Similar to case 1, in step (3), information about candidate cell A, other candidate cells B, C or D, etc. is provided.

[0207] Step (1): The network-side device sends the conditional LTM-related configuration to the UE.

[0208] Step (2): The network-side device activates and / or deactivates one or more TCI states of the LTM candidate cells.

[0209] Step (3): The serving cell (e.g., cell 1) performs at least one of the following:

[0210] The serving cell notifies all candidate cells of the activated and / or deactivated TCI states, and the candidate cells (such as the second cell) perform dynamic resource scheduling on the beams associated with these TCI states; or, the serving cell only notifies all candidate cells associated with activated TCI states of the activated TCI states, and only notifies all candidate cells associated with deactivated TCI states of the deactivated TCI states of the deactivated TCI states.

[0211] Each candidate cell is notified of information about other candidate cells, such as which candidate cells are available, including their frequency points and / or PCI.

[0212] Step (4): The UE performs event evaluation based on the conditional LTM configuration. When the event is satisfied, the UE triggers LTM execution.

[0213] Step (5): The UE selects only the TCI-activated beams for transmission and / or reception and performs the RACH-less procedure. When the UE receives the UL grant for the first PUSCH transmission, the LTM procedure is considered to be successfully completed; or, the UE selects a beam based on the implementation. If the TCI state associated with the beam selected by the UE is not the previously activated TCI state, the UE performs RACH-based LTM; otherwise, it performs RACH-based LTM.

[0214] Step (6): Optionally, the new serving cell (such as the target cell) accessed by the UE notifies all original candidate cells (i.e., the candidate cells in step (3)) that LTM has been successfully executed based on the information of all candidate cells obtained in step (3), and the original candidate cells stop performing dynamic resource scheduling on the beam associated with the TCI state in step (3).

[0215] Optionally, the original serving cell (such as the first cell) may notify the candidate cell that the UE LTM has been successfully executed, and the original candidate cell may stop dynamic resource scheduling on the beam associated with the TCI state in step (3).

[0216] Case 3:

[0217] The original serving cell UE was notified of conditional LTM by a termination signaling (bye message).

[0218] Step (1): The network-side device sends the conditional LTM-related configuration to the UE.

[0219] Step (2): The network-side device activates and / or deactivates one or more TCI states of the LTM candidate cells.

[0220] Step (3): The serving cell (e.g., cell 1) performs at least one of the following:

[0221] The serving cell notifies all candidate cells of the activated and / or deactivated TCI states, and the candidate cells (such as the second cell) perform dynamic resource scheduling on the beams associated with these TCI states; or, the serving cell only notifies all candidate cells associated with activated TCI states of the activated TCI states, and only notifies all candidate cells associated with deactivated TCI states of the deactivated TCI states of the deactivated TCI states.

[0222] Notify all candidate cells of information about other candidate cells, such as which candidate cells are available, including their frequency points and / or PCI, etc.

[0223] Step (4): The UE performs event evaluation based on the conditional LTM configuration. When the event is met, the UE triggers LTM execution and sends a message to the network-side device to inform it that it has performed conditional LTM, as well as the selected beam information and / or the selected and activated TCI state information.

[0224] Step (5): The serving cell notifies all candidate cells or candidate cells associated with the activated TCI state of the activated TCI state. Based on this information, the candidate cells use the corresponding beam for DG scheduling.

[0225] Optionally, a candidate cell can notify other candidate cells of the activated TCI state, and the candidate cells can use the corresponding beam for dynamic grant (DG) scheduling based on this information.

[0226] Step (6): The UE transmits and / or receives based on the TCI-activated beam and performs the RACH-less procedure. When the UE receives an uplink grant (UL grant) for the first PUSCH transmission, the LTM procedure is considered to be successfully completed.

[0227] Example 2:

[0228] In this example, the question of when to perform DG scheduling can be resolved through the interaction between network-side devices.

[0229] As shown in Figure 4, LTM includes the following process:

[0230] Step (1): If L1 or L3 measurement is configured, the UE sends a measurement report to the source gNB / DU.

[0231] Step (2): gNB CU decides to initiate LTM configuration.

[0232] Step (3): For each candidate cell, the gNB CU sends a message to the candidate gNB Distributed Unit (DU), including the candidate cell ID and measurement resource configuration. The gNB CU may also request the candidate gNB DU(s) to provide lower layer RRC configuration.

[0233] Step (4): If the candidate DU accepts the LTM configuration request, it replies with UE CONTEXT SETUP RESPONSE, including the corresponding lower layer RRC configuration.

[0234] Step (5): gNB CU sends UE CONTEXT MODIFICATION REQUEST to source gNB-DU, including information related to early synchronization, etc.

[0235] Step (6): Source gNB-DU responds to UE CONTEXT MODIFICATION RESPONSE, including updated lower layer configuration, etc.

[0236] Step (7): gNB-CU may send UE CONTEXT MODIFICATION REQUEST to each candidate cell accepted by gNB-DU.

[0237] Step (8): candidate gNB-DU reply UE CONTEXT MODIFICATION RESPONSE.

[0238] Step (9): gNB-CU sends DL RRC MESSAGE TRANSFER to source gNB-DU, which contains the RRC reconfiguration message with LTM configuration.

[0239] Step (10): Source gNB-DU forwards the received RRC reconfiguration message to the UE.

[0240] Step (11): The UE replies with an RRC reconfiguration complete message to the source gNB-DU.

[0241] Step (12): Source gNB-DU forwards the received RRC reconfiguration complete message to gNB-CU.

[0242] Step (13): Perform the advance TA acquisition process.

[0243] Step (14): The candidate gNB-DU sends a DU-CU TA INFORMATION TRANSFER message to gNB-CU, which includes the TA value, etc.

[0244] Step (15): gNB-CU forwards the TA value to source gNB-DU.

[0245] Step (16): The source gNB-DU sends the TA value to the UE via the MAC CE. Optionally, the MAC CE may include CG resources, etc.

[0246] Step (17): Source gNB-DU triggers UE to perform TCI state activation and / or deactivation, etc.

[0247] Step (18): The source gNB-DU sends a DU-CU CELL SWITCH NOTIFICATION to the gNB-CU, including at least one of the following:

[0248] Candidate cell ID; TCI state ID; activation state corresponding to TCI state ID; deactivation state corresponding to TCI state ID; TA value.

[0249] Step (19): gNB-CU sends a CU-DU CELL SWITCH NOTIFICATION to candidate gNB-DU, including at least one of the following:

[0250] Candidate cell ID; TCI state ID; activation state corresponding to TCI state ID; deactivation state corresponding to TCI state ID; TA value.

[0251] Step (20): The UE performs conditional LTM evaluation to determine whether the measurement event meets the triggering conditions and performs the LTM execution process.

[0252] Step (21): If no TA is available, the UE initiates a random access procedure to the target cell; otherwise, the UE performs a RACH-less procedure.

[0253] Step (22): After completing the access, the target gNB-DU sends an ACCESS SUCCESS to the gNB-CU.

[0254] Step (23): The UE sends RRCReconfigurationComplete to the target gNB-DU.

[0255] Step (24): The target gNB-DU forwards RRCReconfigurationComplete to gNB-CU.

[0256] Step (25): gNB-CU sends UE CONTEXT MODIFICATION REQUEST to source gNB-DU.

[0257] It should be noted that step (25) can be performed before or after step (24). If the gNB-CU knows that the UE has successfully accessed the network, then step (25) is performed before step (24).

[0258] In addition, gNB-CU may initiate a UE context release procedure for other candidate target gNB-DUs to cancel conditional LTM.

[0259] Step (26): source gNB-DU reply UE CONTEXT MODIFICATION RESPONSE.

[0260] Step (27): gNB-CU sends UE CONTEXT RELEASE COMMAND to source gNB-DU.

[0261] Step (28): Source gNB-DU releases the UE context and replies to gNB-CU with the following message: UE CONTEXT RELEASE COMPLET E.

[0262] Example 3:

[0263] This example addresses the question of when to activate / deactivate CG resources on the network side.

[0264] Step (1): The network-side device sends the conditional LTM-related configuration to the UE.

[0265] Step (2): The network-side device activates and / or deactivates one or more TCI states of the LTM candidate cells.

[0266] Step (3): The serving cell (e.g., the first cell) notifies all candidate cells of the information on the activation and / or deactivation of the TCI state, and the candidate cells (e.g., the second cell) begin to reserve and / or activate CG resources on the beams associated with these TCI states.

[0267] Optionally, a candidate cell may notify other candidate cells of the activation and / or deactivation of TCI states, and the candidate cell may begin to reserve and / or activate CG resources on the beams associated with these TCI states.

[0268] Step (4): The UE performs event evaluation based on the conditional LTM configuration. When the event is satisfied, the UE triggers LTM execution.

[0269] Step (5): The UE selects only the TCI-activated beams for transmission and / or reception and performs the RACH-less procedure. When the UE receives the UL grant for the first PUSCH transmission, the LTM procedure is considered to have been successfully completed.

[0270] Step (6): Optionally, the new serving cell (such as the target cell) to which the UE accesses notifies the original serving cell (such as the first cell), and the original serving cell notifies all original candidate cells (i.e., the candidate cells in step (3)) that LTM has been successfully executed, and the original candidate cells release and / or deactivate the CG resources reserved for the terminal.

[0271] Optionally, the new serving cell may notify other candidate cells that the UE LTM has been successfully executed, and the other candidate cells may release and / or deactivate the CG resources reserved for the terminal.

[0272] Example 4:

[0273] This example demonstrates the maintenance of a TA timer.

[0274] Case 1:

[0275] In this case, the TAT timer is the TAT timer per candidate cell.

[0276] Step (1): The network-side device sends the candidate cell configuration to the UE. The candidate cell configuration includes the TAT configuration.

[0277] Step (2): The serving cell (such as the first cell) sends the TA of one or more candidate cells (such as the second cell) to the UE, and the UE starts the TAT of the corresponding candidate cell.

[0278] Optionally, the UE can report capabilities and initiate up to N TATs.

[0279] Optionally, the network-side device can be configured with a default maximum value. As long as this maximum value is not exceeded, the UE will continue to run TAT.

[0280] Step (3): The serving cell notifies the candidate cell of the start time and length of the TAT.

[0281] Step (4): The UE evaluates the conditional LTM event. When the event is satisfied, the conditional LTM is triggered. At this time, the UE applies the candidate cell configuration and obtains the TAT configuration. The UE determines whether the TAT has timed out based on the already run TAT duration and the threshold in the TAT configuration. If the run duration is greater than the threshold, the timeout occurs. At this time, RACH-based LTM is initiated. Otherwise, RACH-less LTM is initiated.

[0282] Step (4a): Optionally, the network-side device maintains the TA based on the information in step (2). After the TA expires, the candidate cell releases / deactivates the CG resources or stops DG scheduling.

[0283] Step (5): Optionally, after the conditional LTM is completed, the new serving cell (such as the target cell) that the UE accesses notifies the original serving cell (such as the first cell), and the original serving cell then notifies the original candidate cell to release / deactivate CG resources or stop DG scheduling.

[0284] Optionally, the new serving cell may notify other candidate cells that the UE LTM has been successfully executed, and the other candidate cells may release / deactivate CG resources or stop DG scheduling.

[0285] Case 2:

[0286] In this case, the TAT timer is the per TAG TAT timer.

[0287] Step (1): The network-side device sends the candidate cell configuration to the UE. The candidate cell configuration includes TAT ​​configuration and / or TAG ID configuration.

[0288] Step (2): The serving cell (such as the first cell) sends the TA value and / or TAG ID of one or more candidate cells (such as the second cell) to the UE, and the UE initiates one TAT for each TAG.

[0289] Optionally, the UE can report capabilities and initiate up to N TATs.

[0290] Optionally, the network-side device can be configured with a default maximum value. As long as this maximum value is not exceeded, the UE will continue to run TAT.

[0291] Step (3): The serving cell notifies the candidate cell of the start time and length of the TAT.

[0292] Step (4): The UE evaluates the conditional LTM event. When the event is satisfied, conditional LTM is triggered. At this time, the UE applies the candidate cell configuration and obtains the TAT configuration and / or TAG ID configuration. The UE determines whether the TAT has timed out based on the TAT duration of the TAG in which the candidate cell is located and the threshold in the TAT configuration. If the duration is greater than the threshold, the timeout occurs, and RACH-based LTM is initiated. Otherwise, RACH-less LTM is initiated.

[0293] Step (4a): Optionally, the network-side device maintains the TA based on the information in step (2). After the TA expires, the candidate cell will release / deactivate the CG resources or stop DG scheduling.

[0294] Step (5): Optionally, after the conditional LTM is completed, the new serving cell (such as the target cell) that the UE accesses notifies the original serving cell (such as the first cell), and the original serving cell then notifies the original candidate cell to release / deactivate CG resources or stop DG scheduling.

[0295] Optionally, the new serving cell may notify other candidate cells that the UE LTM has been successfully executed, and the other candidate cells may release / deactivate CG resources or stop DG scheduling.

[0296] Through the embodiments of this application, candidate cells can perform DG scheduling and / or CG resource reservation / activation based on the notification from the serving cell, enabling the terminal to perform the correct RACH-less process during the execution of conditional LTM, and ensuring the smooth completion of conditional LTM based on the RACH-less process.

[0297] Referring to Figure 5, which is a flowchart of an information receiving method provided in an embodiment of this application, the information receiving method includes the following steps:

[0298] Step 21: The second network node receives the second information sent by the first network node, the second information including at least one of the following: information on the activated TCI state and information on the deactivated TCI state;

[0299] The second network node includes a second cell, which is a candidate cell for the terminal to use for conditional LTM handover. The first network node includes a first cell, which is the serving cell of the terminal before the conditional LTM handover is successful.

[0300] In one implementation, the second network node receiving can be understood or replaced by the second cell receiving; the second network node transmitting can be understood or replaced by the second cell transmitting.

[0301] In one implementation, the first network node receiving can be understood or replaced by the first cell receiving; the first network node transmitting can be understood or replaced by the first cell transmitting.

[0302] In one embodiment, the second network node includes a second cell. This can be understood or replaced as the second network node being the network node corresponding to the second cell, or the second network node being the network-side device corresponding to the second cell.

[0303] In one embodiment, the first network node includes a first cell. This can be understood or replaced as the first network node being the network node corresponding to the first cell, or the first network node being the network-side device corresponding to the first cell.

[0304] In one implementation, the second network node receives second information sent by the first network node and performs resource scheduling based on the second information.

[0305] In related technologies, in conditional LTM, the network side does not know when the terminal triggers the LTM execution process, nor how candidate cells are subsequently dynamically scheduled or how CG resources are activated or deactivated.

[0306] In this embodiment of the application, the second network node receives the second information sent by the first network node, and can perform at least one of dynamic licensed DG scheduling and configured licensed CG scheduling on the beam associated with the TCI state corresponding to the second information.

[0307] In one embodiment, the step of CG scheduling on the beam associated with the TCI state corresponding to the second information includes: reserving or activating CG resources for the terminal on the beam associated with the TCI state corresponding to the second information.

[0308] In one implementation, when the serving cell activates the TCI state during the early downlink (DL) process, it notifies the candidate cell, which then begins dynamic grant (DG) scheduling on the associated beam ahead of time. When the UE performs RACH-less during conditional LTM execution and receives DG scheduling, the conditional LTM execution is considered successful.

[0309] In one implementation, when the serving cell activates the TCI state during the early DL process, it notifies the candidate cell that the candidate cell reserves or activates the Configured Grant (CG) resources on the associated beam. When the UE triggers the conditional LTM execution process, it can use the corresponding CG resources to transmit uplink data.

[0310] In this embodiment, the second network node receives second information sent by the first network node. The second information includes at least one of the following: information on the activated TCI state and information on the deactivated TCI state. The second network node includes a second cell, which is a candidate cell for conditional LTM handover of the terminal. The first network node includes a first cell, which is the serving cell of the terminal before successful conditional LTM handover. Thus, by receiving the second information sent by the first cell, the second network node can facilitate resource scheduling for the terminal to perform conditional LTM, thereby increasing the probability of successful conditional LTM execution by the terminal.

[0311] Optionally, when the second network node is the target network node, the method further includes at least one of the following:

[0312] The second network node sends a third indication message to the first network node;

[0313] The second network node sends a third instruction message to the third network node;

[0314] The target network node includes a target cell, which is the serving cell of the terminal after a successful conditional LTM handover. The third network node includes at least one candidate cell other than the target cell among the terminal's candidate cells. The third indication information is used to indicate that the terminal has successfully executed conditional LTM, or to indicate that the terminal's context is released or modified.

[0315] The third indication information may be an identifier; or, the third indication information may be implicitly carried through a dedicated message, which is used to indicate that the terminal has successfully executed the condition LTM, or to indicate that the terminal's context has been released or modified; or, the third indication information may be a specific value, which, when carried in the message, indicates that the terminal has successfully executed the condition LTM, or indicates that the terminal's context has been released or modified; etc. This embodiment does not limit the specific form of the third indication information.

[0316] In one implementation, when the second network node is the target network node, the second network node sends third indication information to the first network node, and the first network node sends third indication information to the third network node. This allows the third indication information to be forwarded through the first network node.

[0317] In this embodiment of the application, when the second network node is the target network node, the method further includes at least one of the following: the second network node sends a third indication information to the first network node; the second network node sends a third indication information to the third network node, so that the candidate cells of the terminal other than the target cell can know through the third indication information that the terminal has successfully executed conditional LTM, and thus can release or modify the context of the terminal.

[0318] Optionally, if the second network node is not the target network node, the method further includes:

[0319] The second network node receives third indication information sent by the first network node or the target network node;

[0320] The target network node includes a target cell, which is the serving cell of the terminal after the conditional LTM handover is successful. The third indication information is used to indicate that the terminal has successfully executed conditional LTM, or to indicate that the terminal's context is released or modified.

[0321] In one embodiment, when the second network node is not the target network node, the method further includes at least one of the following:

[0322] The second network node receives the third indication information sent by the first network node or the target network node and stops performing DG scheduling or CG scheduling on the beam associated with the TCI state corresponding to the second information.

[0323] In this embodiment of the application, when the second network node is not the target network node, the method further includes: the second network node receiving third indication information sent by the first network node or the target network node, so that the candidate cells of the terminal other than the target cell can know through the third indication information that the terminal has successfully executed conditional LTM, and thus can release or modify the context of the terminal.

[0324] Optionally, the method further includes:

[0325] If the timing advance (TA) corresponding to the second cell times out, the second network node stops resource scheduling on the beam associated with the TCI state corresponding to the second information.

[0326] In one embodiment, the step of stopping resource scheduling on the beam associated with the TCI state corresponding to the second information when the time advance (TA) of the second cell times out includes: stopping DG scheduling or CG scheduling on the beam associated with the TCI state corresponding to the second information when the TA of the second cell times out.

[0327] In this embodiment of the application, when the timing advance (TA) corresponding to the second cell times out, the second network node stops resource scheduling on the beam associated with the TCI state corresponding to the second information. This allows the resource scheduling for the terminal to perform conditional LTM to be controlled by whether the TA times out, thereby increasing the probability of the terminal successfully performing conditional LTM.

[0328] Referring to Figure 6, which is a flowchart of an operation execution method provided in an embodiment of this application, the operation execution method includes the following steps:

[0329] Step 31: The first network node performs the second operation. The first network node includes a first cell, which is the serving cell of the terminal before the conditional LTM handover is successful.

[0330] The execution of the second operation includes at least one of the following:

[0331] Send second information to multiple second network nodes respectively, the second information including at least one of the following: information on the activated TCI state, information on the deactivated TCI state;

[0332] Send the information about the activated TCI state to the second network node associated with the activated TCI state;

[0333] Send the deactivated TCI state information to the second network node associated with the deactivated TCI state;

[0334] The receiving terminal sends first information, which includes at least one of the following: first indication information, selected beam information, and activated TCI status information, wherein the first indication information is used to indicate that the terminal has triggered conditional LTM;

[0335] The second network node includes a second cell, which is a candidate cell for conditional LTM handover of the terminal.

[0336] In one embodiment, sending second information to multiple second network nodes may include: a first network node sending second information to each of all second network nodes, or a first cell sending second information to each of all candidate cells.

[0337] Optionally, after the receiving terminal sends the first information, the method further includes:

[0338] The first network node sends the activated TCI status information to multiple second network nodes or the second network node associated with the activated TCI status.

[0339] In one implementation, the first network node sending the activated TCI status information to multiple second network nodes may include the first network node sending the activated TCI status information to each of all second network nodes, or the first cell sending the activated TCI status information to each of all candidate cells.

[0340] Optionally, the method further includes at least one of the following:

[0341] The first network node receives the third indication information sent by the target network node;

[0342] The first network node sends a third indication message to the third network node;

[0343] The target network node includes a target cell, which is the serving cell of the terminal after a successful conditional LTM handover. The third network node includes at least one candidate cell other than the target cell among the terminal's candidate cells. The third indication information is used to indicate that the terminal has successfully executed conditional LTM, or to indicate that the terminal's context is released or modified.

[0344] Optionally, the method further includes:

[0345] The first network node sends third information to multiple second network nodes respectively, and the third information is information about all candidate cells of the terminal.

[0346] In one embodiment, the first network node sends third information to multiple second network nodes respectively, which may include: the first network node sending third information to each of all second network nodes respectively, or the first cell sending third information to each of all candidate cells respectively.

[0347] It should be noted that this embodiment is an implementation of the first cell or the first network node corresponding to the embodiment shown in Figure 3 or Figure 5. For the specific implementation, please refer to the relevant description of the embodiment shown in Figure 3 or Figure 5. To avoid repetition, this embodiment will not be described again.

[0348] The operation execution method provided in this application can be executed by an operation execution device. This application uses an operation execution device executing the operation execution method as an example to illustrate the operation execution device provided in this application.

[0349] This application provides an operation execution device. As an example, the operation execution device may be a communication device or a component within a communication device, such as a chip. The communication device may be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal may include, but is not limited to, the type of terminal 101 listed above, and the network-side device may include, but is not limited to, the type of network-side device 102 listed above. This application does not impose specific limitations.

[0350] The operation execution device includes a receiving module, a transmitting module, and a processing module. These modules can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include general-purpose processors, special-purpose processors, etc., such as central processing units (CPUs), microprocessors, digital signal processors (DSPs), artificial intelligence (AI) processors, graphics processing units (GPUs), application-specific integrated circuits (ASICs), network processors (NPs), field-programmable gate arrays (FPGAs), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules can be implemented by a communication interface, which can include one or more of the following: transceivers, pins, circuits, buses, radio frequency units, etc.

[0351] Specifically, referring to Figure 7, when the operation execution device is a terminal or a component within a terminal, the operation execution device 200 includes:

[0352] Processing module 201 is used to perform the first operation;

[0353] The execution of the first operation includes at least one of the following:

[0354] When the terminal triggers the execution of conditional LTM triggered by layer 1 or layer 2, first information is sent to the first cell, wherein the first information includes at least one of the following: first indication information, selected beam information, and information indicating the active transmission configuration (TCI) status. The first indication information is used to indicate that the terminal has triggered conditional LTM, and the first cell is the serving cell of the terminal before the conditional LTM handover was successful.

[0355] When the terminal triggers the execution condition LTM, the process of determining the execution condition LTM is based on whether the first time calibration timer TAT has expired, wherein the first TAT is the TAT that has been started.

[0356] Optionally, the processing module is specifically used for at least one of the following:

[0357] If the first TAT has not timed out, execute the conditional LTM based on the RACH-less procedure;

[0358] If the first TAT times out, a conditional LTM based on the random access channel (RACH) procedure is executed.

[0359] Optionally, the processing module is specifically used for at least one of the following:

[0360] If the time advance TA associated with the beam selected by the terminal is the TA transmitted by the first cell, and the first TAT has not timed out, a conditional LTM based on the RACH-less procedure is executed.

[0361] If the TA associated with the beam selected by the terminal is not the TA sent by the first cell, or if the first TAT times out, a conditional LTM based on a RACH-based procedure is executed.

[0362] Optionally, the processing module of the device is used for:

[0363] When the terminal receives the Target Media Access Control Unit (MAC CE) sent by the first cell, the first TAT is activated.

[0364] The target MAC CE carries a TA.

[0365] Optionally, the processing module of the device is used for:

[0366] Whether the first TAT has timed out is determined based on the comparison result between the runtime of the first TAT and the first threshold in the TAT configuration.

[0367] Optionally, the TAT configuration is the TAT configuration of the target candidate cell;

[0368] or,

[0369] The TAT configuration is the TAT configuration of the timing advance group TAG to which the target candidate cell belongs;

[0370] The target candidate cell is a candidate cell that has at least one beam that satisfies the measurement event, and the measurement event is used to trigger conditional LTM execution.

[0371] Optionally, the first TAT is the TAT that has been activated for the target candidate cell;

[0372] or,

[0373] The first TAT is the activated TAT corresponding to the TAG of the target candidate cell;

[0374] The target candidate cell is a candidate cell that has at least one beam that satisfies the measurement event, and the measurement event is used to trigger conditional LTM execution.

[0375] Optionally, the device further includes:

[0376] The receiving module is configured to receive the configuration of the target candidate cell sent by the first cell, wherein the configuration of the target candidate cell includes at least one of the TAT configuration and the TAG identifier ID configuration;

[0377] The target candidate cell is a candidate cell that has at least one beam that satisfies the measurement event, and the measurement event is used to trigger conditional LTM execution.

[0378] Optionally, the processing module is specifically used for at least one of the following:

[0379] If the TCI state of the beam association selected by the terminal is an active TCI state and the first TAT has not timed out, a conditional LTM based on the RACH-less procedure is executed.

[0380] If the TCI state of the beam association selected by the terminal is not an active TCI state, or if the first TAT times out, a conditional LTM based on a RACH-based procedure is executed.

[0381] Optionally, the processing module of the device is used for:

[0382] Select beam;

[0383] If the selected beam-associated TCI state is not an active TCI state, perform a conditional LTM based on a RACH-based procedure; and / or,

[0384] If the selected beam association TCI state is an active TCI state, a conditional LTM based on the RACH-less process is performed.

[0385] Optionally, the sending module is further configured to:

[0386] When the terminal triggers the execution of condition LTM, a second indication message is sent from the MAC layer to the terminal's Radio Resource Control (RRC) layer. The second indication message is used to indicate that the terminal has triggered condition LTM execution.

[0387] Optionally, the second indication information includes at least one of the following:

[0388] The configuration ID of the target candidate cell;

[0389] The TA value of the target candidate cell;

[0390] TAG ID of the target candidate cell;

[0391] Information related to the selected beam;

[0392] The target candidate cell is a candidate cell that has at least one beam that satisfies the measurement event, and the measurement event is used to trigger conditional LTM execution.

[0393] The operation execution device provided in this application embodiment can implement the various processes implemented in the method embodiment of FIG3 and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0394] The information receiving method provided in this application can be executed by an information receiving device. This application uses an information receiving device executing the information receiving method as an example to illustrate the information receiving device provided in this application.

[0395] This application provides an information receiving device. As an example, the information receiving device may be a communication device or a component within a communication device, such as a chip. The communication device may be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal may include, but is not limited to, the type of terminal 101 listed above, and the network-side device may include, but is not limited to, the type of network-side device 102 listed above. This application does not impose specific limitations.

[0396] The information receiving device includes a receiving module, a transmitting module, and a processing module. These modules can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include general-purpose processors, special-purpose processors, etc., such as central processing units (CPUs), microprocessors, digital signal processors (DSPs), artificial intelligence (AI) processors, graphics processing units (GPUs), application-specific integrated circuits (ASICs), network processors (NPs), field-programmable gate arrays (FPGAs), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules can be implemented by a communication interface, which can include one or more of the following: transceivers, pins, circuits, buses, radio frequency units, etc.

[0397] Referring to Figure 8, when the information receiving device is a second network node or a component within a second network node, the information receiving device 300 includes:

[0398] The receiving module 301 is used to receive second information sent by the first network node, the second information including at least one of the following: information on the activated TCI state and information on the deactivated TCI state;

[0399] The second network node includes a second cell, which is a candidate cell for the terminal to use for conditional LTM handover. The first network node includes a first cell, which is the serving cell of the terminal before the conditional LTM handover is successful.

[0400] Optionally, when the second network node is the target network node, the apparatus further includes a sending module for at least one of the following:

[0401] Send a third instruction message to the first network node;

[0402] Send a third instruction message to a third network node;

[0403] The target network node includes a target cell, which is the serving cell of the terminal after a successful conditional LTM handover. The third network node includes at least one candidate cell other than the target cell among the terminal's candidate cells. The third indication information is used to indicate that the terminal has successfully executed conditional LTM, or to indicate that the terminal's context is released or modified.

[0404] Optionally, if the second network node is not the target network node, the receiving module is further configured to:

[0405] Receive third indication information sent by the first network node or the target network node;

[0406] The target network node includes a target cell, which is the serving cell of the terminal after the conditional LTM handover is successful. The third indication information is used to indicate that the terminal has successfully executed conditional LTM, or to indicate that the terminal's context is released or modified.

[0407] Optionally, the device further includes:

[0408] The processing module is used to stop resource scheduling on the beam associated with the TCI state corresponding to the second information when the time advance (TA) of the second cell expires.

[0409] The information receiving device provided in this application embodiment can implement the various processes implemented in the method embodiment of FIG5 and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0410] Referring to Figure 9, when the operation execution device is a first network node or a component in the first network node, the operation execution device 400 includes:

[0411] Processing module 401 is used to perform a second operation, wherein the first network node includes a first cell, and the first cell is the serving cell of the terminal before the conditional LTM handover is successful;

[0412] The execution of the second operation includes at least one of the following:

[0413] Send second information to multiple second network nodes respectively, the second information including at least one of the following: information on the activated TCI state, information on the deactivated TCI state;

[0414] Send the information about the activated TCI state to the second network node associated with the activated TCI state;

[0415] Send the deactivated TCI state information to the second network node associated with the deactivated TCI state;

[0416] The receiving terminal sends first information, which includes at least one of the following: first indication information, selected beam information, and activated TCI status information, wherein the first indication information is used to indicate that the terminal has triggered conditional LTM;

[0417] The second network node includes a second cell, which is a candidate cell for conditional LTM handover of the terminal.

[0418] Optionally, the device further includes:

[0419] The sending module is used to send the information of the activated TCI state to multiple second network nodes or the second network node associated with the activated TCI state.

[0420] Optionally, the processing module is further configured to perform at least one of the following:

[0421] Receive third indication information sent by the target network node;

[0422] Send a third instruction message to a third network node;

[0423] The target network node includes a target cell, which is the serving cell of the terminal after a successful conditional LTM handover. The third network node includes at least one candidate cell other than the target cell among the terminal's candidate cells. The third indication information is used to indicate that the terminal has successfully executed conditional LTM, or to indicate that the terminal's context is released or modified.

[0424] Optionally, the transmitting module of the device is used for:

[0425] The third information, which is the information of all candidate cells of the terminal, is sent to multiple second network nodes respectively.

[0426] The operation execution device provided in this application embodiment can implement the various processes implemented in the method embodiment of FIG6 and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0427] As shown in Figure 10, this application embodiment also provides a communication device 500, including a processor 501 and a memory 502. The memory 502 stores programs or instructions that can run on the processor 501. For example, when the communication device 500 is a terminal, the program or instructions executed by the processor 501 implement the various steps of the above-described operation execution method embodiment and achieve the same technical effect. When the communication device 500 is a second network node, the program or instructions executed by the processor 501 implement the various steps of the above-described information receiving method embodiment and achieve the same technical effect; therefore, to avoid repetition, they will not be described again here. When the communication device 500 is a first network node, the program or instructions executed by the processor 501 implement the various steps of the above-described operation execution method embodiment and achieve the same technical effect; therefore, to avoid repetition, they will not be described again here.

[0428] This application also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps in the method embodiment shown in FIG3. This terminal embodiment corresponds to the above-described terminal-side method embodiment, and all implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and can achieve the same technical effect. The terminal can be the operation execution device shown in FIG7. Specifically, FIG11 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of this application.

[0429] The terminal 600 includes, but is not limited to, at least some of the following components: radio frequency unit 601, network module 602, audio output unit 603, input unit 604, sensor 605, display unit 606, user input unit 607, interface unit 608, memory 609, and processor 610.

[0430] Those skilled in the art will understand that terminal 600 may also include a power supply (such as a battery) for powering various components. The power supply can be logically connected to processor 610 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The terminal structure shown in Figure 11 does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0431] It should be understood that, in this embodiment, the input unit 604 may include a graphics processor 6041 and a microphone 6042. The graphics processor 6041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 606 may include a display panel 6061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 607 includes at least one of a touch panel 6071 and other input devices 6072. The touch panel 6071 is also called a touch screen. The touch panel 6071 may include two parts: a touch detection device and a touch controller. Other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, power buttons, etc.), a trackball, a mouse, and a joystick, which will not be described in detail here.

[0432] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 601 can transmit it to the processor 610 for processing; in addition, the radio frequency unit 601 can send uplink data to the network-side device. Typically, the radio frequency unit 601 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0433] The memory 609 can be used to store software programs or instructions, as well as various data. The memory 609 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 609 may include volatile memory or non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 609 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0434] Processor 610 may include one or more processing units; optionally, processor 610 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 610.

[0435] The processor 610 is used for:

[0436] Perform the first operation;

[0437] The execution of the first operation includes at least one of the following:

[0438] When the terminal triggers the execution of conditional LTM triggered by layer 1 or layer 2, first information is sent to the first cell, wherein the first information includes at least one of the following: first indication information, selected beam information, and information indicating the active transmission configuration (TCI) status. The first indication information is used to indicate that the terminal has triggered conditional LTM, and the first cell is the serving cell of the terminal before the conditional LTM handover was successful.

[0439] When the terminal triggers the execution condition LTM, the process of determining the execution condition LTM is based on whether the first time calibration timer TAT has expired, wherein the first TAT is the TAT that has been started.

[0440] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description in Figure 3 of the method embodiment and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.

[0441] This application also provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method embodiment shown in FIG5 or FIG6. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this network-side device embodiment and can achieve the same technical effect.

[0442] Specifically, this application embodiment also provides a network-side device, which can be the information receiving device or operation execution device shown in FIG8 or FIG9. As shown in FIG12, the network-side device 700 includes: an antenna 701, a radio frequency device 702, a baseband device 703, a processor 704, and a memory 705. The antenna 701 is connected to the radio frequency device 702. In the uplink direction, the radio frequency device 702 receives information through the antenna 701 and sends the received information to the baseband device 703 for processing. In the downlink direction, the baseband device 703 processes the information to be transmitted and sends it to the radio frequency device 702, which processes the received information and then transmits it through the antenna 701.

[0443] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 703, which includes a baseband processor.

[0444] The baseband device 703 may include at least one baseband board, on which multiple chips are disposed, as shown in FIG12. One of the chips is, for example, a baseband processor, which is connected to the memory 705 via a bus interface to call the program or instructions in the memory 705 to execute the network-side device operation shown in the above method embodiment.

[0445] The network-side device may also include a network interface 706, such as a Common Public Radio Interface (CPRI).

[0446] Wherein, if the network-side device is a second network node, the radio frequency device 702 is used for:

[0447] Receive second information sent by the first network node, the second information including at least one of the following: information on the active TCI state, information on the deactivated TCI state;

[0448] The second network node includes a second cell, which is a candidate cell for the terminal to use for conditional LTM handover. The first network node includes a first cell, which is the serving cell of the terminal before the conditional LTM handover is successful.

[0449] Wherein, if the network-side device is the first network node, the radio frequency device 702 is used for:

[0450] The second operation is performed, wherein the first network node includes a first cell, which is the serving cell of the terminal before the conditional LTM handover is successful;

[0451] The execution of the second operation includes at least one of the following:

[0452] Send second information to multiple second network nodes respectively, the second information including at least one of the following: information on the activated TCI state, information on the deactivated TCI state;

[0453] Send the information about the activated TCI state to the second network node associated with the activated TCI state;

[0454] Send the deactivated TCI state information to the second network node associated with the deactivated TCI state;

[0455] The receiving terminal sends first information, which includes at least one of the following: first indication information, selected beam information, and activated TCI status information, wherein the first indication information is used to indicate that the terminal has triggered conditional LTM;

[0456] The second network node includes a second cell, which is a candidate cell for conditional LTM handover of the terminal.

[0457] In addition, the network-side device 700 of this application embodiment also includes: a program or instructions stored in a memory 705 and executable on a processor 704. The processor 704 calls the program or instructions in the memory 705 to execute the methods executed by the modules shown in FIG8 or FIG9 and achieve the same technical effect. To avoid repetition, it will not be described in detail here.

[0458] Specifically, this application also provides a network-side device. As shown in FIG13, the network-side device 800 includes a processor 801, a network interface 802, and a memory 803. The network-side device may be the information receiving device or operation execution device shown in FIG8 or FIG9. The network interface 802 is, for example, a Common Public Radio Interface (CPRI).

[0459] Wherein, if the network-side device is a second network node, the network interface 802 is used for:

[0460] Receive second information sent by the first network node, the second information including at least one of the following: information on the active TCI state, information on the deactivated TCI state;

[0461] The second network node includes a second cell, which is a candidate cell for the terminal to use for conditional LTM handover. The first network node includes a first cell, which is the serving cell of the terminal before the conditional LTM handover is successful.

[0462] Wherein, if the network-side device is the first network node, the network interface 802 is used for:

[0463] The second operation is performed, wherein the first network node includes a first cell, which is the serving cell of the terminal before the conditional LTM handover is successful;

[0464] The execution of the second operation includes at least one of the following:

[0465] Send second information to multiple second network nodes respectively, the second information including at least one of the following: information on the activated TCI state, information on the deactivated TCI state;

[0466] Send the information about the activated TCI state to the second network node associated with the activated TCI state;

[0467] Send the deactivated TCI state information to the second network node associated with the deactivated TCI state;

[0468] The receiving terminal sends first information, which includes at least one of the following: first indication information, selected beam information, and activated TCI status information, wherein the first indication information is used to indicate that the terminal has triggered conditional LTM;

[0469] The second network node includes a second cell, which is a candidate cell for conditional LTM handover of the terminal. Furthermore, the network-side device 800 in this embodiment also includes a program or instructions stored in a memory 803 and executable on a processor 801. The processor 801 calls the program or instructions in the memory 803 to execute the methods shown in Figure 8 or Figure 9, achieving the same technical effect. To avoid repetition, this will not be described further.

[0470] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described information receiving method or operation execution method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0471] The processor mentioned above is either the processor in the terminal described in the above embodiments or the processor in the network-side device. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0472] This application also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described information receiving method or operation execution method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here. It should be understood that the chip mentioned in this application embodiment can also be called a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0473] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described information receiving method or operation execution method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0474] This application also provides a wireless communication system, including: a terminal, a first network node, and a second network node; or including a terminal and a first network node; or including a first network node and a second network node. The terminal can be used to execute the steps of the operation execution method applied to the terminal as described above, the first network node can be used to execute the steps of the information receiving method applied to the first network node as described above, and the second network node can be used to execute the steps of the operation execution method applied to the second network node as described above.

[0475] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0476] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.), and the computer software product includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0477] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.

Claims

An operation execution method, comprising: The terminal performs the first operation; The execution of the first operation includes at least one of the following: When the terminal triggers the execution of conditional LTM triggered by layer 1 or layer 2, first information is sent to the first cell, wherein the first information includes at least one of the following: first indication information, selected beam information, and information indicating the active transmission configuration (TCI) status. The first indication information is used to indicate that the terminal has triggered conditional LTM, and the first cell is the serving cell of the terminal before the conditional LTM handover was successful. When the terminal triggers the execution condition LTM, the process of determining the execution condition LTM is based on whether the first time calibration timer TAT has expired, wherein the first TAT is the TAT that has been started. The method of claim 1, wherein, The process of determining the execution condition LTM based on whether the first TAT has timed out includes at least one of the following: If the first TAT has not timed out, execute the conditional LTM based on the RACH-less procedure; If the first TAT times out, a conditional LTM based on the random access channel (RACH) procedure is executed. The method of claim 1, wherein, The process of determining the execution condition LTM based on whether the first TAT has timed out includes at least one of the following: If the time advance TA associated with the beam selected by the terminal is the TA transmitted by the first cell, and the first TAT has not timed out, a conditional LTM based on the RACH-less procedure is executed. If the TA associated with the beam selected by the terminal is not the TA sent by the first cell, or if the first TAT times out, a conditional LTM based on a RACH-based procedure is executed. The method according to any one of claims 1-3, the method further comprising: When the terminal receives the Target Media Access Control Unit (MAC CE) sent by the first cell, the terminal initiates the first TAT; The target MAC CE carries a TA. The method according to any one of claims 1-4, the method further comprising: The terminal determines whether the first TAT has timed out based on a comparison between the runtime of the first TAT and a first threshold in the TAT configuration. The method of claim 5, wherein, The TAT configuration is the TAT configuration of the target candidate cell; or, The TAT configuration is the TAT configuration of the timing advance group TAG to which the target candidate cell belongs; The target candidate cell is a candidate cell that has at least one beam that satisfies the measurement event, and the measurement event is used to trigger conditional LTM execution. The method of any one of claims 1-6, wherein, The first TAT is the TAT that has been activated corresponding to the target candidate cell; or, The first TAT is the activated TAT corresponding to the TAG of the target candidate cell; The target candidate cell is a candidate cell that has at least one beam that satisfies the measurement event, and the measurement event is used to trigger conditional LTM execution. The method according to any one of claims 5-7, the method further comprising: The terminal receives the configuration of the target candidate cell sent by the first cell, and the configuration of the target candidate cell includes at least one of the TAT configuration and the TAG identifier ID configuration; The target candidate cell is a candidate cell that has at least one beam that satisfies the measurement event, and the measurement event is used to trigger conditional LTM execution. The method of any one of claims 1-8, wherein, The process of determining the execution condition LTM based on whether the first TAT has timed out includes at least one of the following: If the TCI state of the beam association selected by the terminal is an active TCI state and the first TAT has not timed out, a conditional LTM based on the RACH-less procedure is executed. If the TCI state of the beam association selected by the terminal is not an active TCI state, or if the first TAT times out, a conditional LTM based on a RACH-based procedure is executed. The method according to any one of claims 1-8, the method further comprising: The terminal selects a beam; If the selected beam association TCI state is not an active TCI state, the terminal performs a conditional LTM based on a RACH-based procedure; and / or, When the selected beam association TCI state is an active TCI state, the terminal performs a conditional LTM based on the RACH-less procedure. The method according to any one of claims 1-10, the method further comprising: When the terminal triggers the execution of conditional LTM, the MAC layer of the terminal sends a second indication information to the Radio Resource Control (RRC) layer of the terminal. The second indication information is used to indicate that the terminal has triggered conditional LTM execution. The method of claim 11, wherein, The second instruction information includes at least one of the following: The configuration ID of the target candidate cell; The TA value of the target candidate cell; TAG ID of the target candidate cell; Information related to the selected beam; The target candidate cell is a candidate cell that has at least one beam that satisfies the measurement event, and the measurement event is used to trigger conditional LTM execution. An information receiving method, comprising: The second network node receives second information sent by the first network node, the second information including at least one of the following: information on the activated TCI state and information on the deactivated TCI state; The second network node includes a second cell, which is a candidate cell for the terminal to use for conditional LTM handover. The first network node includes a first cell, which is the serving cell of the terminal before the conditional LTM handover is successful. The method of claim 13, wherein, When the second network node is the target network node, the method further includes at least one of the following: The second network node sends a third indication message to the first network node; The second network node sends a third instruction message to the third network node; The target network node includes a target cell, which is the serving cell of the terminal after a successful conditional LTM handover. The third network node includes at least one candidate cell other than the target cell among the terminal's candidate cells. The third indication information is used to indicate that the terminal has successfully executed conditional LTM, or to indicate that the terminal's context is released or modified. The method of claim 13, wherein, If the second network node is not the target network node, the method further includes: The second network node receives third indication information sent by the first network node or the target network node; The target network node includes a target cell, which is the serving cell of the terminal after the conditional LTM handover is successful. The third indication information is used to indicate that the terminal has successfully executed conditional LTM, or to indicate that the terminal's context is released or modified. The method according to any one of claims 13-15, the method further comprising: If the timing advance (TA) corresponding to the second cell times out, the second network node stops resource scheduling on the beam associated with the TCI state corresponding to the second information. An operation execution method, comprising: The first network node performs the second operation, and the first network node includes a first cell, which is the serving cell of the terminal before the conditional LTM handover is successful. The execution of the second operation includes at least one of the following: Send second information to multiple second network nodes respectively, the second information including at least one of the following: information on the activated TCI state, information on the deactivated TCI state; Send the information about the activated TCI state to the second network node associated with the activated TCI state; Send the deactivated TCI state information to the second network node associated with the deactivated TCI state; The receiving terminal sends first information, which includes at least one of the following: first indication information, selected beam information, and activated TCI status information, wherein the first indication information is used to indicate that the terminal has triggered conditional LTM; The second network node includes a second cell, which is a candidate cell for conditional LTM handover of the terminal. The method of claim 17, wherein, After the receiving terminal sends the first information, the method further includes: The first network node sends the activated TCI status information to multiple second network nodes or the second network node associated with the activated TCI status. The method according to claim 17 or 18, further comprising at least one of the following: The first network node receives the third indication information sent by the target network node; The first network node sends a third indication message to the third network node; wherein The target network node includes a target cell, which is the serving cell of the terminal after a successful conditional LTM handover. The third network node includes at least one candidate cell other than the target cell among the terminal's candidate cells. The third indication information is used to indicate that the terminal has successfully executed conditional LTM, or to indicate that the terminal's context is released or modified. The method according to any one of claims 17-19, the method further comprising: The first network node sends third information to multiple second network nodes respectively, and the third information is information about all candidate cells of the terminal. An operation execution device, comprising: The processing module is used to perform the first operation; The execution of the first operation includes at least one of the following: When the terminal triggers the execution of conditional LTM triggered by layer 1 or layer 2, first information is sent to the first cell, wherein the first information includes at least one of the following: first indication information, selected beam information, and information indicating the active transmission configuration (TCI) status. The first indication information is used to indicate that the terminal has triggered conditional LTM, and the first cell is the serving cell of the terminal before the conditional LTM handover was successful. When the terminal triggers the execution condition LTM, the process of determining the execution condition LTM is based on whether the first time calibration timer TAT has expired, wherein the first TAT is the TAT that has been started. The apparatus of claim 21, wherein The processing module is specifically used for at least one of the following: If the first TAT has not timed out, execute the conditional LTM based on the RACH-less procedure; If the first TAT times out, a conditional LTM based on the random access channel (RACH) procedure is executed. The apparatus of claim 21, wherein The processing module is specifically used for at least one of the following: If the time advance TA associated with the beam selected by the terminal is the TA transmitted by the first cell, and the first TAT has not timed out, a conditional LTM based on the RACH-less procedure is executed. If the TA associated with the beam selected by the terminal is not the TA sent by the first cell, or if the first TAT times out, a conditional LTM based on a RACH-based procedure is executed. The apparatus of any one of claims 21-23, wherein The processing module of the device is used for: Whether the first TAT has timed out is determined based on the comparison result between the runtime of the first TAT and the first threshold in the TAT configuration. The apparatus of any one of claims 21-24, wherein The processing module is specifically used for at least one of the following: If the beam association TCI state selected by the terminal is an active TCI state and the first TAT has not timed out, a conditional LTM based on the RACH-less procedure is executed. If the TCI state of the beam association selected by the terminal is not an active TCI state, or if the first TAT times out, a conditional LTM based on a RACH-based procedure is executed. An information receiving device includes: The receiving module is configured to receive second information sent by the first network node through the second cell, the second information including at least one of the following: information on the activated TCI state and information on the deactivated TCI state; Wherein, the second cell is a candidate cell for the terminal for conditional LTM handover, and the first network node includes a first cell, which is the serving cell of the terminal before the conditional LTM handover is successful. An operation execution device, comprising: The processing module is used to perform the second operation through the first cell, which is the serving cell of the terminal before the conditional LTM handover is successful; The execution of the second operation includes at least one of the following: Send second information to multiple second network nodes respectively, the second information including at least one of the following: information on the activated TCI state, information on the deactivated TCI state; Send the information about the activated TCI state to the second network node associated with the activated TCI state; Send the deactivated TCI state information to the second network node associated with the deactivated TCI state; The receiving terminal sends first information, which includes at least one of the following: first indication information, selected beam information, and activated TCI status information, wherein the first indication information is used to indicate that the terminal has triggered conditional LTM; The second network node includes a second cell, which is a candidate cell for conditional LTM handover of the terminal. A terminal includes a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the operation execution method as described in any one of claims 1 to 12. A network-side device includes a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions being executed by the processor to implement the steps of the information receiving method as described in any one of claims 13 to 16, or to implement the steps of the operation execution method as described in any one of claims 17 to 20. A readable storage medium storing a program or instructions that, when executed by a processor, implement the steps of the operation execution method as claimed in any one of claims 1 to 12, or the steps of the information receiving method as claimed in any one of claims 13 to 16, or the steps of the operation execution method as claimed in any one of claims 17 to 20.

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