Conditional ltm processing method, apparatus, terminal and network-side device

Abstract

The application discloses a conditional LTM processing method and device, a terminal and a network side equipment, and belongs to the technical field of communication. The conditional LTM processing method comprises the following steps: a terminal starts a first TA timer respectively associated with one or more candidate cells; in the case that the terminal triggers conditional LTM execution, the terminal performs a first behavior, the first behavior comprising at least one of the following: stopping or considering timeout of the first TA timer associated with at least one candidate cell; restarting the first TA timer associated with at least one candidate cell; continuing to run the first TA timer associated with at least one candidate cell; starting a second TA timer associated with a PTAG to which at least one candidate cell belongs; stopping or considering timeout of a third TA timer associated with a PTAG to which a source cell belongs; starting or restarting a fourth TA timer associated with the source cell; deactivating other activated TCI states except a first TCI state; activating the first TCI state; and deactivating all activated TCI states.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to a conditional LTM processing method, apparatus, terminal, and network-side equipment. Background Technology

[0002] To reduce handover latency, current technologies introduce Layer 1 or Layer 2 Triggered Mobility (L1 / L2 Triggered Mobility, LTM), where the Distributed Unit (DU) instructs the terminal to hand over to a suitable candidate cell based on the Layer 1 measurement results reported by the terminal using Layer 1 or Layer 2 signaling.

[0003] In related technologies, in order to reduce the problem of excessive measurement reporting caused by periodic or semi-continuous reporting in traditional LTM, Conditional LTM (CLTM) is introduced. That is, by pre-defining execution events, when the event is met, the terminal does not perform measurement reporting, but directly performs LTM, that is, performs cell or beam handover process.

[0004] In Conditional LTM, an early uplink and downlink synchronization process also exists. The network sends a Physical Downlink Control Channel (PDCCH) command to the terminal, which then sends a preamble to the indicated candidate cell. After the entire process is completed, the network sends the Timing Advance (TA) to the terminal via the Media Access Control Control Element (MAC CE). The TA corresponds to a specific candidate cell. The terminal can obtain the TAs of multiple cells in advance. Once the terminal obtains the TA, it starts the corresponding TA timer. During the TA timer's operation, the TA of that cell is considered valid.

[0005] The terminal will evaluate based on the configuration of Conditional LTM. When the candidate cell or beam meets the conditions, Conditional LTM will be triggered. At this time, if the terminal believes that it has a valid TA, it can perform RACH-less to access the target cell.

[0006] In related technologies, conditional LTM also involves an early uplink and downlink synchronization process. Downlink synchronization activates or deactivates the Transmission Configuration Indicator state (TCI state), while uplink synchronization acquires the TA of candidate cells in advance. Since conditional LTM is a handover process performed by the terminal based on measurements, it is unclear how the acquired TAs and activated TCI states of multiple cells are processed after conditional LTM is executed. Summary of the Invention

[0007] This application provides a conditional LTM processing method, apparatus, terminal, and network-side device, which can solve the problem in the related art that there is no relevant solution to instruct the terminal on how to handle the TA and / or activated TCIstate of multiple cells after conditional LTM is executed.

[0008] In a first aspect, a mobility LTM processing method triggered by a conditional layer 1 or layer 2 is provided, the method comprising:

[0009] When the terminal trigger condition LTM is executed, the terminal performs a first action, the first action including at least one of the following:

[0010] Stop the first TA timer associated with at least one candidate cell;

[0011] The first TA timer associated with at least one candidate cell has timed out;

[0012] Start or restart the first TA timer associated with at least one candidate cell;

[0013] Continue running the first TA timer associated with at least one candidate cell;

[0014] Start or restart the second TA timer associated with the primary timing advance group (PTAG) of at least one candidate cell;

[0015] Stop the third TA timer associated with the PTAG of the source cell;

[0016] The third TA timer associated with the PTAG of the source cell has timed out;

[0017] Start or restart the fourth TA timer associated with the source cell;

[0018] Deactivate all active TCI states except for the first TCI state;

[0019] Activate the first TCI state;

[0020] Deactivate all active TCI states.

[0021] Secondly, a conditional LTM processing method is provided, the method comprising:

[0022] The terminal obtains first information from the target cell, the first information including at least one of the following:

[0023] At least one candidate cell associated with TA information;

[0024] The remaining duration of the first TA timer associated with at least one candidate cell;

[0025] The running time of the first TA timer associated with at least one candidate cell;

[0026] The at least one candidate cell includes: a candidate cell among other candidate cells besides the target cell selected by the terminal trigger condition LTM.

[0027] Thirdly, a conditional LTM processing method is provided, the method comprising:

[0028] After the terminal trigger condition LTM is executed, the terminal determines the CSI reference signal resources for CSI measurement reporting of the target cell;

[0029] The terminal obtains the first CSI measurement result based on the CSI reference signal resource;

[0030] The terminal sends the first CSI measurement result to the target cell.

[0031] Fourthly, a conditional LTM processing apparatus is provided, the apparatus comprising:

[0032] A first processing module is configured to perform a first action when the terminal trigger condition LTM is executed, the first action including at least one of the following:

[0033] Stop the first TA timer associated with at least one candidate cell;

[0034] The first TA timer associated with at least one candidate cell has timed out;

[0035] Start or restart the first TA timer associated with at least one candidate cell;

[0036] Continue running the first TA timer associated with at least one candidate cell;

[0037] Start or restart the second TA timer associated with the primary timing advance group (PTAG) of at least one candidate cell;

[0038] Stop the third TA timer associated with the PTAG of the source cell;

[0039] The third TA timer associated with the PTAG of the source cell has timed out;

[0040] Start or restart the fourth TA timer associated with the source cell;

[0041] Deactivate all active TCI states except for the first TCI state;

[0042] Activate the first TCI state;

[0043] Deactivate all active TCI states.

[0044] Fifthly, a conditional LTM processing apparatus is provided, applied to a target cell of a terminal, the apparatus comprising:

[0045] A first receiving module is configured to acquire first information, the first information including at least one of the following:

[0046] At least one candidate cell associated with TA information;

[0047] The remaining duration of the first TA timer associated with at least one candidate cell;

[0048] The running time of the first TA timer associated with at least one candidate cell;

[0049] The at least one candidate cell includes: a candidate cell among other candidate cells besides the target cell selected by the terminal trigger condition LTM.

[0050] Sixthly, a conditional LTM processing apparatus is provided for use in a terminal, the apparatus comprising:

[0051] The second processing module is used to determine the CSI reference signal resources for CSI measurement reporting of the target cell after the terminal trigger condition LTM is executed.

[0052] The third processing module is used to obtain the first CSI measurement result based on the CSI reference signal resource;

[0053] The second transmitting module is used to transmit the first CSI measurement result to the target cell.

[0054] In a seventh aspect, a conditional LTM processing apparatus is provided, the apparatus being configured to perform the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect, or to implement the steps of the method described in the third aspect.

[0055] Eighthly, 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, or implementing the steps of the method as described in the third aspect.

[0056] A ninth aspect provides a terminal, including a processor and a communication interface, wherein the processor is configured to initiate a first TA timer associated with the timing advance (TA) of one or more candidate cells; and, when the terminal trigger condition LTM is executed, to perform a first action, the first action including at least one of the following:

[0057] Stop the first TA timer associated with at least one candidate cell;

[0058] The first TA timer associated with at least one candidate cell has timed out;

[0059] Start or restart the first TA timer associated with at least one candidate cell;

[0060] Continue running the first TA timer associated with at least one candidate cell;

[0061] Start or restart the second TA timer associated with the primary timing advance group (PTAG) of at least one candidate cell;

[0062] Stop the third TA timer associated with the PTAG of the source cell;

[0063] The third TA timer associated with the PTAG of the source cell has timed out;

[0064] Start or restart the fourth TA timer associated with the source cell;

[0065] Deactivate all active TCI states except for the first TCI state;

[0066] Activate the first TCI state;

[0067] Deactivate all active TCI states.

[0068] Alternatively, the processor is further configured to, after the terminal trigger condition LTM is executed, determine the CSI reference signal resources for CSI measurement reporting of the target cell; and obtain a first CSI measurement result based on the CSI reference signal resources; the communication interface is further configured to send the first CSI measurement result to the target cell by the terminal.

[0069] In a tenth 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 aspect.

[0070] Eleventhly, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is used to acquire first information, the first information including at least one of the following:

[0071] At least one candidate cell associated with TA information;

[0072] The remaining duration of the first TA timer associated with at least one candidate cell;

[0073] The running time of the first TA timer associated with at least one candidate cell;

[0074] The at least one candidate cell includes: a candidate cell among other candidate cells besides the target cell selected by the terminal trigger condition LTM.

[0075] In a twelfth 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.

[0076] In a thirteenth aspect, a wireless communication system is provided, comprising: a terminal and a network-side device, wherein the terminal is configured to perform the steps of the method as described in the first or third aspect, and the network-side device is configured to perform the steps of the method as described in the second aspect.

[0077] In a fourteenth 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 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.

[0078] In a fifteenth 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.

[0079] In this embodiment, after the terminal receives the TA of one or more candidate cells sent by the network side, the first TA timer associated with the TA is started. After the terminal triggers the LTM condition, the terminal performs the first action to operate on the TA timer and / or TCI state of other candidate cells. This can avoid the terminal power consumption caused by the terminal continuously maintaining an invalid TA timer and / or continuously performing beam tracking based on the active TCI state, thereby achieving terminal energy saving. Attached Figure Description

[0080] Figure 1 A block diagram illustrating a wireless communication system to which embodiments of this application may be applied;

[0081] Figure 2 This diagram illustrates one of the steps of the conditional LTM processing method provided in this application embodiment.

[0082] Figure 3 This is the second schematic diagram illustrating the steps of the conditional LTM processing method provided in the embodiments of this application.

[0083] Figure 4 This is the third schematic diagram illustrating the steps of the conditional LTM processing method provided in the embodiments of this application;

[0084] Figure 5 This is a schematic diagram of one of the structural diagrams of the conditional LTM processing apparatus provided in the embodiments of this application;

[0085] Figure 6 This is a second schematic diagram illustrating the structure of the conditional LTM processing apparatus provided in the embodiments of this application;

[0086] Figure 7 This is the third schematic diagram of the structure of the conditional LTM processing device provided in the embodiments of this application;

[0087] Figure 8 This is a schematic diagram of the structure of the communication device provided in the embodiments of this application;

[0088] Figure 9 This is a schematic diagram of the structure of the terminal provided in the embodiments of this application;

[0089] Figure 10 This is a schematic diagram illustrating the structure of the network-side device provided in the embodiments of this application. Detailed Implementation

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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 with the systems and radio technologies mentioned above, as well as with 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) radio systems. th Generation 6G communication system.

[0094] Figure 1This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 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 devices (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game consoles, personal computers (PCs), ATMs, or self-service machines, etc. Wearable devices include: smartwatches, smart bracelets, smart earphones, 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 11 is not limited in this application embodiment. Network-side equipment 12 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, Transmit / Receive Point (TRP), Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform stations). 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.

[0095] 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.

[0096] 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).

[0097] The conditional LTM processing method provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0098] like Figure 2 As shown, this application embodiment provides a mobility LTM processing method triggered by condition layer 1 or layer 2, the method comprising:

[0099] Step 201: When the terminal trigger condition LTM is executed, the terminal performs a first action, the first action including at least one of the following:

[0100] Stop the first timing advance (TA) timer associated with at least one candidate cell;

[0101] It is determined (or assumed) that the first TA timer associated with at least one candidate cell has timed out;

[0102] Start or restart the first TA timer associated with at least one candidate cell;

[0103] Continue running the first TA timer associated with at least one candidate cell;

[0104] Start or restart the second TA timer associated with at least one candidate cell’s Primary Timing Advance Group (PTAG);

[0105] Stop the third TA timer associated with the PTAG of the source cell;

[0106] It has been determined (or assumed) that the third TA timer associated with the PTAG of the source cell has timed out;

[0107] Start or restart the fourth TA timer associated with the source cell;

[0108] Deactivate all active TCI states except for the first transport configuration indicating TCI state;

[0109] Activate the first TCI state;

[0110] Deactivate all active TCI states.

[0111] Optionally, the source cell mentioned above is the serving cell of the terminal before the trigger condition LTM.

[0112] It should be noted that, prior to step 101, the method further includes:

[0113] After the terminal receives the TA of one or more candidate cells sent by the network side, the terminal starts the first TA timer associated with the timing advance TA of one or more candidate cells respectively; and / or, the terminal activates one or more TCI states.

[0114] For example, during the early uplink synchronization process, the terminal acquires the TAs of multiple candidate cells and starts the first TA timer after receiving the TAs. Subsequently, when one or more beams of the candidate cells meet the conditions, the terminal triggers conditional LTM execution and selects a cell or beam as the target cell or beam.

[0115] For example, during the early downlink synchronization process, the terminal activates multiple TCI states. Subsequently, when one or more beams of the candidate cell meet the conditions, the terminal triggers conditional LTM execution to select a cell or beam as the target cell or beam.

[0116] Optionally, a candidate cell may be activated by one or more TCI states (all of which belong to the candidate cell); or, multiple candidate cells may be activated by one or more TCI states (which belong to different candidate cells), without specific limitations.

[0117] In one implementation, the first action includes: when deactivating other active TCI states besides the first TCI state, the first TCI state is an active TCI state.

[0118] In another implementation, the first action includes: when the first TCI state is activated, the first TCI state is an inactive TCI state.

[0119] In another implementation, the first action includes: when deactivating all activated TCI states, the first TCI state is not included among all activated TCI states, that is, the first TCI state is an inactive TCI state.

[0120] In at least one embodiment of this application, the method further includes at least one of the following:

[0121] If the terminal has a running first TA timer, it is determined that the TA of the cell corresponding to the first TA timer is valid.

[0122] When the terminal sends a preamble to the first candidate cell according to the physical downlink control channel (PDCCH) command sent by the network-side device, if the first candidate cell has a running first TA timer, it is determined that the first TA timer has expired or that the TA corresponding to the first candidate cell is invalid.

[0123] When a terminal receives a new TA for a second candidate cell from a network-side device, the terminal starts a first TA timer for the second candidate cell to maintain the new TA and determines that the old TA maintained by the first TA timer for the second candidate cell is invalid.

[0124] In at least one embodiment of this application, the first TCI state includes at least one of the following:

[0125] The triggering condition is the reference signal or one or more TCI states associated with the beam that trigger LTM execution;

[0126] The triggering condition for LTM execution is one or more active TCI states of the target cell associated with the reference signal or beam.

[0127] The triggering condition for LTM execution is one or more active TCI states associated with the target cell;

[0128] The target reference signal or one or more TCI states associated with the beam are selected by the terminal during conditional LTM execution;

[0129] The target reference signal or beam-associated target cell selected by the terminal during conditional LTM execution, and one or more active TCI states;

[0130] The target cell selected by the terminal during conditional LTM execution is associated with one or more active TCI states.

[0131] Optionally, the target cell is the cell corresponding to the target reference signal or beam selected after the terminal trigger condition LTM is executed.

[0132] In at least one embodiment of this application, the at least one candidate cell includes: other candidate cells besides the target cell;

[0133] The target cell is the cell corresponding to the target beam selected after the terminal trigger condition LTM is executed.

[0134] As an optional embodiment, when one or more beams of a candidate cell meet the conditions, the terminal triggers conditional LTM execution to select a cell or beam as the target cell or beam. For other candidate cells that are not the target cell, the terminal performs the first action described above.

[0135] As an optional embodiment, the first line includes starting or restarting a second TA timer associated with the PTAG of at least one candidate cell, including:

[0136] If the configured duration of the second TA timer is less than the configured duration or remaining duration of the first TA timer, start or restart the second TA timer.

[0137] For example, for any candidate cell, such as candidate cell A, if the configured duration of the second TA timer associated with the PTAG to which candidate cell A belongs is less than the configured duration or remaining duration of the first TA timer of candidate cell A, the terminal starts or restarts the second TA timer.

[0138] As another optional embodiment, when the first action includes: stopping the first TA timer associated with at least one candidate cell and starting or restarting the second TA timer associated with the PTAG to which at least one candidate cell belongs, the configuration duration of the second TA timer is equal to the remaining duration of the first TA timer.

[0139] For example, for any candidate cell, such as candidate cell B, if the configured duration of the second TA timer associated with the PTAG to which candidate cell B belongs is equal to the remaining duration of the first TA timer of candidate cell B, the terminal stops the first TA timer associated with candidate cell B and starts or restarts the second TA timer associated with the PTAG to which candidate cell B belongs.

[0140] As another optional embodiment, when the first action includes stopping the third TA timer associated with the PTAG to which the source cell belongs, and starting or restarting the fourth TA timer associated with the source cell, the configuration duration of the fourth TA timer is equal to the remaining duration of the third TA timer.

[0141] For example, if the configured duration of the fourth TA timer associated with the source cell of the terminal is equal to the remaining duration of the third timer associated with the PTAG to which the source cell belongs, the terminal stops the third TA timer associated with the PTAG to which the source cell belongs and starts or restarts the fourth TA timer associated with the source cell.

[0142] In an optional embodiment of this application, the continued operation of the first TA timer associated with at least one candidate cell in the first line includes:

[0143] Continue running the first TA timer associated with at least one candidate cell that satisfies the first condition; wherein the first condition includes at least one of the following:

[0144] The candidate cells are in the first list of target cells;

[0145] The candidate cell and the target cell belong to the same TA group;

[0146] The target cell is configured with Layer 3 measurement-related configurations for the frequency point where the candidate cell is located;

[0147] The target cell is configured with layer 1 or layer 3 measurement-related configurations for the candidate cell beams.

[0148] In another optional embodiment of this application, the step of stopping the first TA timer associated with at least one candidate cell or determining that the first TA timer associated with at least one candidate cell has timed out includes:

[0149] Stop the first TA timer associated with at least one candidate cell that meets the second condition, or determine that the first TA timer associated with at least one candidate cell that meets the second condition has timed out; wherein the second condition includes at least one of the following:

[0150] The candidate cell is not in the first list of the target cells;

[0151] The candidate cell and the target cell do not belong to the same TA group;

[0152] The target cell is not configured with Layer 3 measurement-related configurations for the frequency point of the candidate cell;

[0153] The target cell is not configured with the beam-related layer 1 or layer 3 configuration of the candidate cell.

[0154] In one implementation, the first list is a pre-defined list of target cells. Optionally, this first list can be updated based on relevant information about the target cells.

[0155] In at least one embodiment of this application, when the first action includes: deactivating other active TCI states besides the first TCI state; activating the first TCI state; and deactivating at least one of all active TCI states, the terminal performs the first action, including:

[0156] If a third condition is met, the terminal performs the first action; wherein the third condition includes at least one of the following:

[0157] There exists a beam that satisfies the LTM trigger condition for at least one candidate cell;

[0158] There exists at least one candidate cell that satisfies the LTM trigger condition;

[0159] The terminal begins executing conditional LTM;

[0160] Conditional LTM execution complete;

[0161] Conditional LTM execution failed, and the terminal performed fast recovery using the candidate cells of Conditional LTM.

[0162] The fulfillment of this third condition can also be understood as the terminal determining the trigger condition for LTM execution.

[0163] In at least one embodiment of this application, when the terminal completes a conditional LTM handover to the target cell, the method further includes:

[0164] The terminal sends first information to the target cell; the first information includes at least one of the following:

[0165] At least one candidate cell associated with TA information;

[0166] The remaining duration of the first TA timer associated with at least one candidate cell;

[0167] The elapsed duration of the first TA timer associated with at least one candidate cell.

[0168] Optionally, this first information can be carried by a Radio Resource Control (RRC) reconfiguration completion message sent to the target cell, or by other terminal auxiliary messages.

[0169] In at least one embodiment of this application, when the terminal completes a conditional LTM handover to the target cell, the method further includes:

[0170] After the first TA timer associated with at least one candidate cell expires, the terminal sends second information to the target cell, the second information indicating that the first TA timer associated with the candidate cell has expired.

[0171] For example, the relevant process for conditional LTM is as follows:

[0172] Step 1: The base station sends conditional LTM configuration to the terminal;

[0173] Step 2: The terminal performs a conditional LTM configuration assessment;

[0174] Step 3: The base station sends a PDCCH command to the terminal. The terminal sends a preamble to the candidate cell. The candidate cell sends the TA to the source cell. The source cell sends the TA to the terminal. After receiving the TA, the terminal starts the first TA timer.

[0175] Step 4: Terminal evaluation condition LTM, at least one beam satisfies the event triggering condition;

[0176] Step 5: The terminal triggers conditional LTM execution, selecting the first beam as the target beam;

[0177] Step 6: The terminal performs a RACH-based (without RACH) or RACH-LESS (based on RACH) procedure on the target cell based on the operation status of the first TAtimer of the target cell and other factors.

[0178] Step 7: The terminal stops the first TA timer associated with other candidate cells that are not the target cell or considers that the first TA timer associated with other candidate cells has timed out;

[0179] Step 8: The terminal completes the conditional LTM process.

[0180] Optionally, after the terminal completes the conditional LTM process based on step 6, it further includes:

[0181] Send an RRC reconfiguration complete message to the target cell, which includes the remaining duration of the first TA timer associated with other candidate cells that are not the target cell.

[0182] In summary, in this embodiment, after the terminal receives the TA of one or more candidate cells sent by the network side, the first TA timer associated with the TA is started. After the terminal triggers the LTM condition, the terminal performs the first action to operate on the TA timers and / or TCI states of other candidate cells. This can avoid the terminal power consumption caused by the terminal continuously maintaining an invalid TA timer and / or continuously performing beam tracking based on the active TCI state, thereby achieving terminal energy saving.

[0183] like Figure 3 As shown in the embodiments of this application, a conditional LTM processing method is also provided, the method comprising:

[0184] Step 301: The terminal obtains first information from the target cell, the first information including at least one of the following:

[0185] At least one candidate cell associated with TA information;

[0186] The remaining duration of the first TA timer associated with at least one candidate cell;

[0187] The running time of the first TA timer associated with at least one candidate cell;

[0188] The at least one candidate cell includes: a candidate cell among other candidate cells besides the target cell selected by the terminal trigger condition LTM.

[0189] Optionally, the target cell is the cell corresponding to the target reference signal or beam selected after the terminal trigger condition LTM is executed.

[0190] In an optional embodiment of this application, step 301 includes:

[0191] The target cell receives the first information sent by the terminal.

[0192] Optionally, when the terminal completes the conditional LTM handover to the target cell, the target cell receives the first information sent by the terminal.

[0193] In one implementation, the first information can be carried by a Radio Resource Control (RRC) reconfiguration completion message sent to the target cell, or by other terminal auxiliary messages.

[0194] In another optional embodiment of this application, step 301 includes:

[0195] The target cell receives the first information sent by the source cell of the terminal.

[0196] Optionally, the target cell receives the first information sent by the source cell of the terminal, including:

[0197] When the terminal trigger condition LTM is executed, the target cell receives the first information sent by the source cell;

[0198] or,

[0199] After the terminal completes the conditional LTM execution, the target cell receives the Radio Resource Control (RRC) reconfiguration completion message sent by the terminal, and obtains the first information from the source cell based on the RRC reconfiguration completion message.

[0200] It should be noted that the target cell of the terminal mentioned in the embodiments of this application can also be called the target base station of the terminal; the source cell of the terminal can also be called the source base station of the terminal, and no specific limitation is made here.

[0201] For example, the target cell of the terminal receives the first information sent by the source cell; or, the target base station of the terminal receives the first information sent by the source base station; or, the target cell of the terminal receives the first information sent by the source base station; or, the target base station of the terminal receives the first information sent by the source cell.

[0202] For example, if at least one candidate cell or beam meets the triggering condition, the terminal triggering condition LTM is executed. In this case, the terminal's source cell sends the first information to the terminal's target cell.

[0203] Optionally, the source cell may include at least one of a source centralized unit (CU) or a source distributed unit (DU); the target cell may include at least one of a target CU or a target DU; no specific limitation is made here.

[0204] For example, if at least one candidate cell or beam meets the triggering conditions, the terminal triggers conditional LTM execution. After LTM execution is completed, the terminal sends an RRC reconfiguration completion message to the target cell. When the target cell receives the RRC reconfiguration completion message, the target cell sends a request message to the source cell, and then the source cell sends the first information to the target cell.

[0205] Alternatively, if at least one candidate cell or beam meets the triggering conditions, the terminal triggers conditional LTM execution. After LTM execution is completed, the terminal sends an RRC reconfiguration completion message to the target cell. Upon receiving the RRC reconfiguration completion message, the target cell sends a notification or indication message to the source cell, indicating that the source cell's conditional LTM is complete. Subsequently, the source cell sends first information to the target cell. Optionally, the notification or indication message includes the request information to request the source cell to send the first information.

[0206] In summary, in the embodiments of this application, when the terminal completes the conditional LTM handover to the target cell, the target cell can obtain at least one TA information associated with a candidate cell or information of the first TA timer, thereby enabling transmission processing based on the TA information associated with the candidate cell or information of the first TA timer, thereby improving transmission efficiency.

[0207] like Figure 4 As shown in the embodiments of this application, a conditional LTM processing method is also provided, the method comprising:

[0208] Step 401: After the terminal trigger condition LTM is executed, the terminal determines the CSI reference signal resources for CSI measurement reporting of the target cell;

[0209] Step 402: The terminal obtains the first CSI measurement result based on the CSI reference signal resource;

[0210] Step 403: The terminal sends the first CSI measurement result to the target cell.

[0211] In this embodiment, after the terminal trigger condition LTM is executed and before the terminal switches to the target cell, the terminal determines the CSI reference signal resources for CSI measurement reporting of the target cell, and performs the measurement and reports the measurement results. This embodiment can measure the CSI reference signal resources in advance before the terminal switches to the target cell, thereby enabling rapid data transmission to the target cell based on advance measurement and improving cell handover efficiency.

[0212] In at least one embodiment of this application, the CSI reference signal resources for reporting CSI measurements of the target cell include any one of the following:

[0213] The first report configures the associated CSI reference signal resources;

[0214] The trigger condition is at least one CSI reference signal resource associated with the TCI state of the selected reference signal after LTM execution.

[0215] Triggering condition: At least one CSI reference signal resource associated with the reference signal selected after LTM execution;

[0216] Triggering condition: At least one CSI reference signal resource associated with the cell selected after LTM execution.

[0217] Optionally, the association between the TCI state and at least one CSI reference signal resource is configured by the network.

[0218] Among them, at least one of the above-mentioned CSI reference signal resources can be CSI resource settings, CSI reference signal resource sets, or CSI reference signal resources.

[0219] The TCI state of the reference signal selected after the LTM trigger condition is executed can be understood as follows: the quasi-co-address QCL reference signal or QCL root reference signal in the TCI state is the reference signal selected by the terminal for the LTM trigger condition execution.

[0220] Optionally, the association between the reference signal and at least one CSI reference signal resource is configured by the network.

[0221] Optionally, the reference signal selected after the triggering condition LTM is executed is a measurement resource among the at least one CSI reference signal resources.

[0222] Optionally, the method further includes: determining that the first report configuration includes at least one of the following:

[0223] The report configuration associated with the TCI status of the reference signal of the LTM trigger condition selected by the terminal;

[0224] The report configuration associated with the reference signal of the LTM trigger condition selected by the terminal;

[0225] The terminal selects the LTM cell association report configuration.

[0226] In one implementation, the first report configuration can be either an LTM CSI report configuration or a CSI report configuration.

[0227] Optionally, the association between the TCI status and the report configuration is configured by the network.

[0228] The TCI state of the reference signal for the trigger condition LTM selected by the terminal can be understood as follows: the quasi-co-address QCL reference signal or the QCL root reference signal in the TCI state is the reference signal for the execution of the trigger condition LTM selected by the terminal.

[0229] Optionally, the association between the reference signal and the reporting configuration is configured by the network.

[0230] The reference signal for the LTM trigger condition selected by the terminal is the measurement resource associated with the report configuration. Specifically, the identifier corresponding to the reference signal is included in the resource set in the LTM CSI report config.

[0231] Optionally, only one report configuration is configured in the cell for which the terminal selects the trigger condition LTM.

[0232] In at least one embodiment of this application, the first CSI measurement result includes at least one of the following:

[0233] Broadband Channel Quality Indicator (PMI) based on Type I codebook;

[0234] Wideband precoding matrix indicator (CQI);

[0235] Rank indicator RI;

[0236] CSI Reference Signal Resource Indicator (CRI)

[0237] As an optional embodiment, the terminal sends the first CSI measurement result to the target cell, including:

[0238] The terminal transmits the first CSI measurement result to the target cell on a first uplink resource; wherein the first uplink resource includes at least one of the following:

[0239] The physical uplink shared channel resources configured in the network to carry the first uplink message;

[0240] The resources of random access message A;

[0241] The resources for random access message 3;

[0242] The network is configured with dedicated physical uplink control channel resources to carry the results of the first CSI measurement;

[0243] The network is configured with a dedicated Type 1 physical uplink shared channel resource for carrying the first CSI measurement results.

[0244] In summary, in this embodiment, after the terminal trigger condition LTM is executed and before the terminal switches to the target cell, the terminal determines the CSI reference signal resources for CSI measurement reporting of the target cell, and performs the measurement and reports the measurement results. This embodiment can measure the CSI reference signal resources in advance before the terminal switches to the target cell, thereby enabling rapid data transmission to the target cell based on advance measurement and improving cell handover efficiency.

[0245] The conditional LTM execution method provided in this application can be executed by a conditional LTM execution device. This application uses the execution of the conditional LTM execution method by a conditional LTM execution device as an example to illustrate the conditional LTM execution device provided in this application.

[0246] This application provides a conditional LTM processing apparatus. As an example, the conditional LTM processing apparatus 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 11 listed above, and the network-side device may include, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0247] The conditional LTM processing 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 a general-purpose processor, a special-purpose processor, such as a Central Processing Unit (CPU), microprocessor, Digital Signal Processor (DSP), Artificial Intelligence (AI) processor, Graphics Processing Unit (GPU), Application Specific Integrated Circuit (ASIC), Network Processor (NP), Field Programmable Gate Array (FPGA), 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: transceiver, pins, circuits, bus, radio frequency unit, etc.

[0248] For details, see Figure 5 When the conditional LTM execution device is a terminal or a component within a terminal, the conditional LTM execution device includes:

[0249] The first processing module 501 is used to start the first TA timer associated with the timing advance TA of one or more candidate cells respectively;

[0250] When the terminal trigger condition LTM is executed, the terminal performs a first action, the first action including at least one of the following:

[0251] Stop the first TA timer associated with at least one candidate cell;

[0252] The first TA timer associated with at least one candidate cell has timed out;

[0253] Start or restart the first TA timer associated with at least one candidate cell;

[0254] Continue running the first TA timer associated with at least one candidate cell;

[0255] Start or restart the second TA timer associated with the primary timing advance group (PTAG) of at least one candidate cell;

[0256] Stop the third TA timer associated with the PTAG of the source cell;

[0257] The third TA timer associated with the PTAG of the source cell has timed out;

[0258] Start or restart the fourth TA timer associated with the source cell;

[0259] Deactivate all active TCI states except for the first TCI state;

[0260] Activate the first TCI state;

[0261] Deactivate all active TCI states.

[0262] In some embodiments, the first TCI state includes at least one of the following:

[0263] The triggering condition is the reference signal or one or more TCI states associated with the beam that trigger LTM execution;

[0264] The triggering condition for LTM execution is one or more active TCI states of the target cell associated with the reference signal or beam.

[0265] The triggering condition for LTM execution is one or more active TCI states associated with the target cell;

[0266] The target reference signal or one or more TCI states associated with the beam are selected by the terminal during conditional LTM execution;

[0267] The target reference signal or beam-associated target cell selected by the terminal during conditional LTM execution, and one or more active TCI states;

[0268] The target cell selected by the terminal during conditional LTM execution is associated with one or more active TCI states.

[0269] In some embodiments, the at least one candidate cell includes: other candidate cells besides the target cell;

[0270] The target cell is the cell corresponding to the target beam selected after the terminal trigger condition LTM is executed.

[0271] In some embodiments, starting or restarting a second TA timer associated with the primary timing advance group (PTAG) to which at least one candidate cell belongs includes:

[0272] If the configured duration of the second TA timer is less than the configured duration or remaining duration of the first TA timer, start or restart the second TA timer.

[0273] In some embodiments, when the first action includes stopping a first TA timer associated with at least one candidate cell and starting or restarting a second TA timer associated with the PTAG to which at least one candidate cell belongs, the configuration duration of the second TA timer is equal to the remaining duration of the first TA timer.

[0274] In some embodiments, when the first action includes stopping the third TA timer associated with the PTAG to which the source cell belongs, and starting or restarting the fourth TA timer associated with the source cell, the configuration duration of the fourth TA timer is equal to the remaining duration of the third TA timer.

[0275] In some embodiments, continuing to run the first TA timer associated with at least one candidate cell includes:

[0276] Continue running the first TA timer associated with at least one candidate cell that satisfies the first condition; wherein the first condition includes at least one of the following:

[0277] The candidate cells are in the first list of target cells;

[0278] The candidate cell and the target cell belong to the same TA group;

[0279] The target cell is configured with Layer 3 measurement-related configurations for the frequency point where the candidate cell is located;

[0280] The target cell is configured with layer 1 or layer 3 measurement-related configurations for the candidate cell beams.

[0281] In some embodiments, stopping the first TA timer associated with at least one candidate cell or determining that the first TA timer associated with at least one candidate cell has timed out includes:

[0282] Stop the first TA timer associated with at least one candidate cell that meets the second condition, or determine that the first TA timer associated with at least one candidate cell that meets the second condition has timed out; wherein the second condition includes at least one of the following:

[0283] The candidate cell is not in the first list of the target cells;

[0284] The candidate cell and the target cell do not belong to the same TA group;

[0285] The target cell is not configured with Layer 3 measurement-related configurations for the frequency point of the candidate cell;

[0286] The target cell is not configured with the beam-related layer 1 or layer 3 configuration of the candidate cell.

[0287] In some embodiments, where the first action includes deactivating at least one activated TCI state, the first processing module is further configured to:

[0288] If a third condition is met, the first action is performed; wherein the third condition includes at least one of the following:

[0289] There exists a beam that satisfies the LTM trigger condition for at least one candidate cell;

[0290] There exists at least one candidate cell that satisfies the LTM trigger condition;

[0291] The terminal begins executing conditional LTM;

[0292] Conditional LTM execution complete;

[0293] Conditional LTM execution failed, and the terminal performed fast recovery using the candidate cells of Conditional LTM.

[0294] In some embodiments, the apparatus further includes:

[0295] A first transmitting module is configured to transmit first information to the target cell; the first information includes at least one of the following:

[0296] At least one candidate cell associated with TA information;

[0297] The remaining duration of the first TA timer associated with at least one candidate cell;

[0298] The elapsed duration of the first TA timer associated with at least one candidate cell.

[0299] In some embodiments, the apparatus further includes:

[0300] The second sending module is configured to send second information to the target cell after the first TA timer associated with at least one candidate cell has expired, the second information being used to indicate that the first TA timer associated with the candidate cell has expired.

[0301] In some embodiments, the apparatus further includes at least one of the following modules:

[0302] The fourth processing module is used to determine that the TA of the cell corresponding to the first TA timer is valid when the terminal has a running first TA timer.

[0303] The fifth processing module is used to determine whether the first TA timer has expired or the TA corresponding to the first candidate cell is invalid when the terminal sends a preamble to the first candidate cell according to the physical downlink control channel (PDCCH) command sent by the network-side device.

[0304] The sixth processing module is configured to, when the terminal receives a new TA for the second candidate cell sent by the network-side device, start the first TA timer of the second candidate cell to maintain the new TA, and determine that the old TA maintained by the first TA timer of the second candidate cell is invalid.

[0305] In this embodiment, after the terminal receives the TA of one or more candidate cells sent by the network side, the first TA timer associated with the TA is started. After the terminal triggers the LTM condition, the terminal performs the first action to operate on the TA timer and / or TCI state of other candidate cells. This can avoid the terminal power consumption caused by the terminal continuously maintaining an invalid TA timer and / or continuously performing beam tracking based on the active TCI state, thereby achieving terminal energy saving.

[0306] It should be noted that the conditional LTM execution device provided in this application embodiment is a device capable of executing the above-described conditional LTM execution method. Therefore, all embodiments of the above-described conditional LTM execution method are applicable to this device and can achieve the same or similar beneficial effects, which will not be repeated here.

[0307] See Figure 6 When the conditional LTM execution device is a network-side device or a component within a network-side device, the device includes:

[0308] The first receiving module 601 is configured to acquire first information, the first information including at least one of the following:

[0309] At least one candidate cell associated with TA information;

[0310] The remaining duration of the first TA timer associated with at least one candidate cell;

[0311] The running time of the first TA timer associated with at least one candidate cell;

[0312] The at least one candidate cell includes: a candidate cell among other candidate cells besides the target cell selected by the terminal trigger condition LTM.

[0313] In some embodiments, the first receiving module includes:

[0314] The first receiving submodule is used to receive the first information sent by the terminal;

[0315] And / or,

[0316] The second receiving submodule is used to receive the first information sent by the source cell of the terminal.

[0317] In some embodiments, the second receiving submodule is further configured to:

[0318] When the terminal trigger condition LTM is executed, the first information sent by the source cell is received;

[0319] or,

[0320] After the terminal completes the conditional LTM execution, it receives the Radio Resource Control (RRC) reconfiguration completion message sent by the terminal, and obtains the first information from the source cell based on the RRC reconfiguration completion message.

[0321] In this embodiment of the application, when the terminal completes the conditional LTM handover to the target cell, the target cell can obtain at least one candidate cell associated with TA information or the information of the first TA timer, thereby enabling transmission processing based on the candidate cell associated with TA information or the information of the first TA timer, thereby improving transmission efficiency.

[0322] It should be noted that the conditional LTM execution device provided in this application embodiment is a device capable of executing the above-described conditional LTM execution method. Therefore, all embodiments of the above-described conditional LTM execution method are applicable to this device and can achieve the same or similar beneficial effects, which will not be repeated here.

[0323] For details, see Figure 7 When the conditional LTM execution device is a terminal or a component within a terminal, the conditional LTM execution device includes:

[0324] The second processing module 701 is used to determine the CSI reference signal resources for CSI measurement reporting of the target cell after the terminal trigger condition LTM is executed.

[0325] The third processing module 702 is used to obtain the first CSI measurement result based on the CSI reference signal resource;

[0326] The second transmitting module 703 is used to transmit the first CSI measurement result to the target cell.

[0327] In some embodiments, the CSI reference signal resources for CSI measurement reporting of the target cell include any one of the following:

[0328] The first report configures the associated CSI reference signal resources;

[0329] The trigger condition is at least one CSI reference signal resource associated with the TCI state of the selected reference signal after LTM execution.

[0330] Triggering condition: At least one CSI reference signal resource associated with the reference signal selected after LTM execution;

[0331] Triggering condition: At least one CSI reference signal resource associated with the cell selected after LTM execution.

[0332] In some embodiments, the apparatus further includes:

[0333] The fourth processing module is configured to determine that the first report configuration includes at least one of the following:

[0334] The report configuration associated with the TCI status of the reference signal of the LTM trigger condition selected by the terminal;

[0335] The report configuration associated with the reference signal of the LTM trigger condition selected by the terminal;

[0336] The terminal selects the LTM cell association report configuration.

[0337] In some embodiments, the first CSI measurement result includes at least one of the following:

[0338] Broadband Channel Quality Indicator (PMI) based on Type I codebook;

[0339] Wideband precoding matrix indicator (CQI);

[0340] Rank indicator RI;

[0341] CSI Reference Signal Resource Indicator (CRI)

[0342] In some embodiments, the second sending module is further configured to:

[0343] The first CSI measurement result is transmitted to the target cell on a first uplink resource; wherein the first uplink resource includes at least one of the following:

[0344] The physical uplink shared channel resources configured in the network to carry the first uplink message;

[0345] The resources of random access message A;

[0346] The resources for random access message 3;

[0347] The network is configured with dedicated physical uplink control channel resources to carry the results of the first CSI measurement;

[0348] The network is configured with a dedicated Type 1 physical uplink shared channel resource for carrying the first CSI measurement results.

[0349] In this embodiment, after the terminal trigger condition LTM is executed and before the terminal switches to the target cell, the terminal determines the CSI reference signal resources for CSI measurement reporting of the target cell, and performs the measurement and reports the measurement results. This embodiment can measure the CSI reference signal resources in advance before the terminal switches to the target cell, thereby enabling rapid data transmission to the target cell based on advance measurement and improving cell handover efficiency.

[0350] It should be noted that the conditional LTM execution device provided in this application embodiment is a device capable of executing the above-described conditional LTM execution method. Therefore, all embodiments of the above-described conditional LTM execution method are applicable to this device and can achieve the same or similar beneficial effects, which will not be repeated here.

[0351] The conditional LTM execution device provided in this application embodiment can achieve... Figures 2 to 4 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0352] like Figure 8 As shown, this application embodiment also provides a communication device 800, including a processor 801 and a memory 802. The memory 802 stores programs or instructions that can run on the processor 801. For example, when the communication device 800 is a terminal, the program or instructions executed by the processor 801 implement the various steps of the above-described conditional LTM processing method embodiment and achieve the same technical effect. When the communication device 800 is a network-side device, the program or instructions executed by the processor 801 implement the various steps of the above-described conditional LTM processing method embodiment and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0353] This application embodiment 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, for example... Figure 2 or Figure 4 The steps in the method embodiment shown are illustrated. This terminal embodiment corresponds to the above-described terminal-side method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and achieve the same technical effect. The terminal can be... Figure 5 or Figure 7 The conditional LTM execution device is shown. Specifically, Figure 9 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0354] The terminal 900 includes, but is not limited to, at least some of the following components: radio frequency unit 901, network module 902, audio output unit 903, input unit 904, sensor 905, display unit 906, user input unit 907, interface unit 908, memory 909, and processor 910.

[0355] Those skilled in the art will understand that the terminal 900 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 910 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 9 The terminal structure shown 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.

[0356] It should be understood that, in this embodiment, the input unit 904 may include a graphics processor 9041 and a microphone 9042. The graphics processor 9041 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 906 may include a display panel 9061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 907 includes at least one of a touch panel 9071 and other input devices 9072. The touch panel 9071 is also called a touch screen. The touch panel 9071 may include a touch detection device and a touch controller. Other input devices 9072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0357] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 901 can transmit it to the processor 910 for processing; in addition, the radio frequency unit 901 can send uplink data to the network-side device. Typically, the radio frequency unit 901 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0358] The memory 909 can be used to store software programs or instructions, as well as various data. The memory 909 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 909 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 909 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0359] Processor 910 may include one or more processing units; optionally, processor 910 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 910.

[0360] Wherein, processor 910 is configured to execute a first action when the terminal trigger condition LTM is executed, the first action including at least one of the following:

[0361] Stop the first timing advance (TA) timer associated with at least one candidate cell;

[0362] The first TA timer associated with at least one candidate cell has timed out;

[0363] Start or restart the first TA timer associated with at least one candidate cell;

[0364] Continue running the first TA timer associated with at least one candidate cell;

[0365] Start or restart the second TA timer associated with the primary timing advance group (PTAG) of at least one candidate cell;

[0366] Stop the third TA timer associated with the PTAG of the source cell;

[0367] The third TA timer associated with the PTAG of the source cell has timed out;

[0368] Start or restart the fourth TA timer associated with the source cell;

[0369] Deactivate all active TCI states except for the first transport configuration indicating TCI state;

[0370] Activate the first TCI state;

[0371] Deactivate all active TCI states.

[0372] Alternatively, the processor 910 is further configured to, after the terminal trigger condition LTM is executed, determine the CSI reference signal resources for CSI measurement reporting of the target cell; obtain a first CSI measurement result based on the CSI reference signal resources; and the radio frequency unit 901 is configured to send the first CSI measurement result to the target cell.

[0373] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the method embodiment and achieve the same or corresponding technical effect. To avoid repetition, it will not be described again here.

[0374] This application embodiment also provides a network-side device, 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, for example... Figure 3 The steps of the method embodiment shown are illustrated. 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.

[0375] Specifically, embodiments of this application also provide a network-side device, which can be... Figure 6 The conditions shown are for the LTM execution device. For example... Figure 10As shown, the network-side device 1100 includes: an antenna 111, a radio frequency (RF) device 112, a baseband device 113, a processor 114, and a memory 115. The antenna 111 is connected to the RF device 112. In the uplink direction, the RF device 112 receives information through the antenna 111 and transmits the received information to the baseband device 113 for processing. In the downlink direction, the baseband device 113 processes the information to be transmitted and sends it to the RF device 112. The RF device 112 processes the received information and transmits it through the antenna 111.

[0376] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 113, which includes a baseband processor.

[0377] Baseband device 113 may include, for example, at least one baseband board on which multiple chips are disposed, such as Figure 10 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 115 via a bus interface to call the program or instructions in the memory 115 to execute the network-side device operation shown in the above method embodiment.

[0378] The network-side device may also include a network interface 116, such as a Common Public Radio Interface (CPRI).

[0379] The radio frequency device 112 is used to acquire first information, which includes at least one of the following:

[0380] At least one candidate cell associated with TA information;

[0381] The remaining duration of the first TA timer associated with at least one candidate cell;

[0382] The running time of the first TA timer associated with at least one candidate cell;

[0383] The at least one candidate cell includes: a candidate cell among other candidate cells besides the target cell selected by the terminal trigger condition LTM.

[0384] Furthermore, the network-side device 1100 in this embodiment of the application also includes: a program or instructions stored in memory 115 and executable on processor 114, wherein processor 114 calls the program or instructions in memory 115 to execute. Figure 6 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0385] 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 conditional LTM processing method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0386] 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.

[0387] This application embodiment 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 conditional LTM processing method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0388] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0389] 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 conditional LTM processing method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0390] This application also provides a communication system, including: a terminal and a network-side device, wherein the terminal can be used to execute the steps of the conditional LTM processing method described above, and the network-side device can be used to execute the steps of the conditional LTM processing method described above.

[0391] 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.

[0392] 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.

[0393] 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

1. A mobility LTM processing method triggered by a conditional layer 1 or layer 2, characterized in that, The method includes: When the terminal trigger condition LTM is executed, the terminal performs a first action, which includes at least one of the following: Stop the first timing advance (TA) timer associated with at least one candidate cell; The first TA timer associated with at least one candidate cell has timed out; Start or restart the first TA timer associated with at least one candidate cell; Continue running the first TA timer associated with at least one candidate cell; Start or restart the second TA timer associated with the primary timing advance group (PTAG) of at least one candidate cell; Stop the third TA timer associated with the PTAG of the source cell; The third TA timer associated with the PTAG of the source cell has timed out; Start or restart the fourth TA timer associated with the source cell; Deactivate all active TCI states except for the first transport configuration indicating TCI state; Activate the first TCI state; Deactivate all active TCI states.

2. The method according to claim 1, characterized in that, The first TCI state includes at least one of the following: The triggering condition is the reference signal or one or more TCI states associated with the beam that trigger LTM execution; The triggering condition for LTM execution is one or more active TCI states of the target cell associated with the reference signal or beam. The triggering condition for LTM execution is one or more active TCI states associated with the target cell; The target reference signal or one or more TCI states associated with the beam are selected by the terminal during conditional LTM execution; The target reference signal or beam-associated target cell selected by the terminal during conditional LTM execution, and one or more active TCI states; The target cell selected by the terminal during conditional LTM execution is associated with one or more active TCI states.

3. The method according to claim 1, characterized in that, The at least one candidate cell includes: other candidate cells besides the target cell; The target cell is the cell corresponding to the target beam selected after the terminal trigger condition LTM is executed.

4. The method according to claim 1, characterized in that, Start or restart the second TA timer associated with the primary timing advance group (PTAG) of at least one candidate cell, including: If the configured duration of the second TA timer is less than the configured duration or remaining duration of the first TA timer, start or restart the second TA timer.

5. The method according to claim 1, characterized in that, When the first action includes stopping the first TA timer associated with at least one candidate cell and starting or restarting the second TA timer associated with the PTAG to which at least one candidate cell belongs, the configuration duration of the second TA timer is equal to the remaining duration of the first TA timer.

6. The method according to claim 1, characterized in that, When the first action includes stopping the third TA timer associated with the PTAG of the source cell and starting or restarting the fourth TA timer associated with the source cell, the configuration duration of the fourth TA timer is equal to the remaining duration of the third TA timer.

7. The method according to claim 3, characterized in that, The continued operation of the first TA timer associated with at least one candidate cell includes: Continue running the first TA timer associated with at least one candidate cell that satisfies the first condition; wherein the first condition includes at least one of the following: The candidate cells are in the first list of target cells; The candidate cell and the target cell belong to the same TA group; The target cell is configured with Layer 3 measurement-related configurations for the frequency point where the candidate cell is located; The target cell is configured with layer 1 or layer 3 measurement related configurations for the candidate cell beam.

8. The method according to claim 3, characterized in that, The step of stopping the first TA timer associated with at least one candidate cell or determining that the first TA timer associated with at least one candidate cell has timed out includes: Stop the first TA timer associated with at least one candidate cell that meets the second condition, or determine that the first TA timer associated with at least one candidate cell that meets the second condition has timed out; wherein the second condition includes at least one of the following: The candidate cell is not in the first list of the target cells; The candidate cell and the target cell do not belong to the same TA group; The target cell is not configured with Layer 3 measurement-related configurations for the frequency point of the candidate cell; The target cell is not configured with the beam-related layer 1 or layer 3 configuration of the candidate cell.

9. The method according to claim 1, characterized in that, The terminal performs the first action, including: If a third condition is met, the terminal performs the first action; wherein the third condition includes at least one of the following: There exists a beam that satisfies the LTM trigger condition for at least one candidate cell; There exists at least one candidate cell that satisfies the LTM trigger condition; The terminal begins executing conditional LTM; Conditional LTM execution complete; Conditional LTM execution failed, and the terminal performed fast recovery using the candidate cells of Conditional LTM.

10. The method according to any one of claims 1-9, characterized in that, The method further includes: The terminal sends first information to the target cell; the first information includes at least one of the following: At least one candidate cell associated with TA information; The remaining duration of the first TA timer associated with at least one candidate cell; The elapsed duration of the first TA timer associated with at least one candidate cell.

11. The method according to any one of claims 1-9, characterized in that, The method further includes: After the first TA timer associated with at least one candidate cell expires, the terminal sends second information to the target cell, the second information indicating that the first TA timer associated with the candidate cell has expired.

12. The method according to any one of claims 1-11, characterized in that, The method further includes at least one of the following: If the terminal has a running first TA timer, it is determined that the TA of the cell corresponding to the first TA timer is valid. When the terminal sends a preamble to the first candidate cell according to the physical downlink control channel (PDCCH) command sent by the network-side device, if the first candidate cell has a running first TA timer, it is determined that the first TA timer has expired or that the TA corresponding to the first candidate cell is invalid. When a terminal receives a new TA for a second candidate cell from a network-side device, the terminal starts a first TA timer for the second candidate cell to maintain the new TA and determines that the old TA maintained by the first TA timer for the second candidate cell is invalid.

13. A conditional LTM processing method, characterized in that, The method includes: The terminal obtains first information from the target cell, the first information including at least one of the following: At least one candidate cell associated with TA information; The remaining duration of the first TA timer associated with at least one candidate cell; The running time of the first TA timer associated with at least one candidate cell; The at least one candidate cell includes: a candidate cell among other candidate cells besides the target cell selected by the terminal trigger condition LTM.

14. The method according to claim 13, characterized in that, The terminal obtains first information about the target cell, including: The target cell receives the first information sent by the terminal; or, The target cell receives the first information sent by the source cell of the terminal.

15. The method according to claim 14, characterized in that, The target cell receives the first information sent by the source cell of the terminal, including: When the terminal trigger condition LTM is executed, the target cell receives the first information sent by the source cell; or, After the terminal completes the conditional LTM execution, the target cell receives the Radio Resource Control (RRC) reconfiguration completion message sent by the terminal, and obtains the first information from the source cell based on the RRC reconfiguration completion message.

16. A conditional LTM processing method, characterized in that, The method includes: After the terminal trigger condition LTM is executed, the terminal determines the CSI reference signal resources for CSI measurement reporting of the target cell; The terminal obtains the first CSI measurement result based on the CSI reference signal resource; The terminal sends the first CSI measurement result to the target cell.

17. The method according to claim 16, characterized in that, The CSI reference signal resources used for CSI measurement reporting of the target cell include any one of the following: The first report configures the associated CSI reference signal resources; The trigger condition is at least one CSI reference signal resource associated with the TCI state of the selected reference signal after LTM execution. Triggering condition: At least one CSI reference signal resource associated with the reference signal selected after LTM execution; Triggering condition: At least one CSI reference signal resource associated with the cell selected after LTM execution.

18. The method according to claim 17, characterized in that, The method further includes: determining that the first report configuration includes at least one of the following: The report configuration associated with the TCI status of the reference signal of the LTM trigger condition selected by the terminal; The report configuration associated with the reference signal of the LTM trigger condition selected by the terminal; The terminal selects the LTM cell association report configuration.

19. The method according to claim 16, characterized in that, The first CSI measurement result includes at least one of the following: Broadband Channel Quality Indicator (PMI) based on Type I codebook; Wideband precoding matrix indicator (CQI); Rank indicator RI; CSI Reference Signal Resource Indicator (CRI) 20. The method according to claim 16, characterized in that, The terminal sends the first CSI measurement result to the target cell, including: The terminal transmits the first CSI measurement result to the target cell on a first uplink resource; wherein the first uplink resource includes at least one of the following: The physical uplink shared channel resources configured in the network to carry the first uplink message; The resources of random access message A; The resources for random access message 3; The network is configured with dedicated physical uplink control channel resources to carry the results of the first CSI measurement; The network is configured with a dedicated Type 1 physical uplink shared channel resource for carrying the first CSI measurement results.

21. A conditional LTM processing apparatus, characterized in that, Applied to a terminal, the device includes: A first processing module is configured to execute a first action when the terminal trigger condition LTM is executed, the first action including at least one of the following: Stop the first TA timer associated with at least one candidate cell; The first TA timer associated with at least one candidate cell has timed out; Start or restart the first TA timer associated with at least one candidate cell; Continue running the first TA timer associated with at least one candidate cell; Start or restart the second TA timer associated with the primary timing advance group (PTAG) of at least one candidate cell; Stop the third TA timer associated with the PTAG of the source cell; The third TA timer associated with the PTAG of the source cell has timed out; Start or restart the fourth TA timer associated with the source cell; Deactivate all active TCI states except for the first TCI state; Activate the first TCI state; Deactivate all active TCI states.

22. The apparatus according to claim 21, characterized in that, The first TCI state includes at least one of the following: The triggering condition is the reference signal or one or more TCI states associated with the beam that trigger LTM execution; The triggering condition for LTM execution is one or more active TCI states of the target cell associated with the reference signal or beam. The triggering condition for LTM execution is one or more active TCI states associated with the target cell; The target reference signal or one or more TCI states associated with the beam are selected by the terminal during conditional LTM execution; The target reference signal or beam-associated target cell selected by the terminal during conditional LTM execution, and one or more active TCI states; The target cell selected by the terminal during conditional LTM execution is associated with one or more active TCI states.

23. The apparatus according to claim 21, characterized in that, The at least one candidate cell includes: other candidate cells besides the target cell; The target cell is the cell corresponding to the target beam selected after the terminal trigger condition LTM is executed.

24. The apparatus according to claim 21, characterized in that, Start or restart the second TA timer associated with the primary timing advance group (PTAG) of at least one candidate cell, including: If the configured duration of the second TA timer is less than the configured duration or remaining duration of the first TA timer, start or restart the second TA timer.

25. The apparatus according to claim 21, characterized in that, When the first action includes stopping the first TA timer associated with at least one candidate cell and starting or restarting the second TA timer associated with the PTAG to which at least one candidate cell belongs, the configuration duration of the second TA timer is equal to the remaining duration of the first TA timer.

26. The apparatus according to claim 21, characterized in that, When the first action includes stopping the third TA timer associated with the PTAG of the source cell and starting or restarting the fourth TA timer associated with the source cell, the configuration duration of the fourth TA timer is equal to the remaining duration of the third TA timer.

27. The apparatus according to claim 23, characterized in that, The continued operation of the first TA timer associated with at least one candidate cell includes: Continue running the first TA timer associated with at least one candidate cell that satisfies the first condition; wherein the first condition includes at least one of the following: The candidate cells are in the first list of target cells; The candidate cell and the target cell belong to the same TA group; The target cell is configured with Layer 3 measurement-related configurations for the frequency point where the candidate cell is located; The target cell is configured with layer 1 or layer 3 measurement related configurations for the candidate cell beam.

28. The apparatus according to claim 23, characterized in that, The step of stopping the first TA timer associated with at least one candidate cell or determining that the first TA timer associated with at least one candidate cell has timed out includes: Stop the first TA timer associated with at least one candidate cell that meets the second condition, or determine that the first TA timer associated with at least one candidate cell that meets the second condition has timed out; wherein the second condition includes at least one of the following: The candidate cell is not in the first list of the target cells; The candidate cell and the target cell do not belong to the same TA group; The target cell is not configured with Layer 3 measurement-related configurations for the frequency point of the candidate cell; The target cell is not configured with the beam-related layer 1 or layer 3 configuration of the candidate cell.

29. The apparatus according to claim 21, characterized in that, The first processing module is further configured to: If a third condition is met, the first action is performed; wherein the third condition includes at least one of the following: There exists a beam that satisfies the LTM trigger condition for at least one candidate cell; There exists at least one candidate cell that satisfies the LTM trigger condition; The terminal begins executing conditional LTM; Conditional LTM execution complete; Conditional LTM execution failed, and the terminal performed fast recovery using the candidate cells of Conditional LTM.

30. The apparatus according to any one of claims 21-29, characterized in that, The device further includes: A first transmitting module is configured to transmit first information to a target cell; the first information includes at least one of the following: At least one candidate cell associated with TA information; The remaining duration of the first TA timer associated with at least one candidate cell; The elapsed duration of the first TA timer associated with at least one candidate cell.

31. The apparatus according to any one of claims 21-29, characterized in that, The device further includes: The second sending module is configured to send second information to the target cell after the first TA timer associated with at least one candidate cell has expired, the second information being used to indicate that the first TA timer associated with the candidate cell has expired.

32. The apparatus according to any one of claims 21-31, characterized in that, The device further includes at least one of the following modules: The fourth processing module is used to determine that the TA of the cell corresponding to the first TA timer is valid when the terminal has a running first TA timer. The fifth processing module is used to determine whether the first TA timer has expired or the TA corresponding to the first candidate cell is invalid when the terminal sends a preamble to the first candidate cell according to the physical downlink control channel (PDCCH) command sent by the network-side device. The sixth processing module is configured to, when the terminal receives a new TA for the second candidate cell sent by the network-side device, start the first TA timer of the second candidate cell to maintain the new TA, and determine that the old TA maintained by the first TA timer of the second candidate cell is invalid.

33. A conditional LTM processing apparatus, characterized in that, The device is applied to the target cell of the terminal and includes: A first receiving module is configured to acquire first information, the first information including at least one of the following: At least one candidate cell associated with TA information; The remaining duration of the first TA timer associated with at least one candidate cell; The running time of the first TA timer associated with at least one candidate cell; The at least one candidate cell includes: a candidate cell among other candidate cells besides the target cell selected by the terminal trigger condition LTM.

34. The apparatus according to claim 33, characterized in that, The first receiving module includes: The first receiving submodule is used to receive the first information sent by the terminal; And / or, The second receiving submodule is used to receive the first information sent by the source cell of the terminal.

35. The apparatus according to claim 34, characterized in that, The second receiving submodule is further used for: When the terminal trigger condition LTM is executed, the first information sent by the source cell is received; or, After the terminal completes the conditional LTM execution, it receives the Radio Resource Control (RRC) reconfiguration completion message sent by the terminal, and obtains the first information from the source cell based on the RRC reconfiguration completion message.

36. A conditional LTM processing apparatus, characterized in that, Applied to a terminal, the device includes: The second processing module is used to determine the CSI reference signal resources for CSI measurement reporting of the target cell after the terminal trigger condition LTM is executed. The third processing module is used to obtain the first CSI measurement result based on the CSI reference signal resource; The second transmitting module is used to transmit the first CSI measurement result to the target cell.

37. The apparatus according to claim 36, characterized in that, The CSI reference signal resources used for CSI measurement reporting of the target cell include any one of the following: The first report configures the associated CSI reference signal resources; The trigger condition is at least one CSI reference signal resource associated with the TCI state of the selected reference signal after LTM execution. Triggering condition: At least one CSI reference signal resource associated with the reference signal selected after LTM execution; Triggering condition: At least one CSI reference signal resource associated with the cell selected after LTM execution.

38. The apparatus according to claim 37, characterized in that, The device further includes: The fourth processing module is configured to determine that the first report configuration includes at least one of the following: The report configuration associated with the TCI status of the reference signal of the LTM trigger condition selected by the terminal; The report configuration associated with the reference signal of the LTM trigger condition selected by the terminal; The terminal selects the LTM cell association report configuration.

39. The apparatus according to claim 36, characterized in that, The first CSI measurement result includes at least one of the following: Broadband Channel Quality Indicator (PMI) based on Type I codebook; Wideband precoding matrix indicator (CQI); Rank indicator RI; CSI Reference Signal Resource Indicator (CRI) 40. The apparatus according to claim 36, characterized in that, The second sending module is further used for: The first CSI measurement result is transmitted to the target cell on a first uplink resource; wherein the first uplink resource includes at least one of the following: The physical uplink shared channel resources configured in the network to carry the first uplink message; The resources of random access message A; The resources for random access message 3; The network is configured with dedicated physical uplink control channel resources to carry the results of the first CSI measurement; The network is configured with a dedicated Type 1 physical uplink shared channel resource for carrying the first CSI measurement results.

41. A terminal, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the conditional LTM processing method as described in any one of claims 1-12, or to implement the steps of the conditional LTM processing method as described in any one of claims 16-20.

42. A network-side device, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the conditional LTM processing method as described in any one of claims 13-15.

43. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the conditional LTM processing method as described in any one of claims 1-12, or the steps of the conditional LTM processing method as described in any one of claims 13-15, or the steps of the conditional LTM processing method as described in any one of claims 16-20.

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