Communication method, device, and storage medium

Abstract

Embodiments of the present application relate to technical fields such as communications and terminals, and provide a communication method, a device, and a storage medium. The method comprises: sending at least one piece of L1 / L2-triggered mobility (LTM)-related information. The LTM-related information comprises or is used for determining a configured application type of a target cell, and the configured application type is LTM execution or LTM recovery. A terminal sends the LTM-related information, so that the timeliness of accessing an optimal cell by the terminal can be improved.

Description

Communication method, device and storage medium

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on February 26, 2024, with application number 202410211827.0 and application name “Communication Method, Device and Storage Medium”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to technical fields such as communications and terminals, and in particular to communication methods, devices, and storage media. Background Art

[0003] Currently, layer-triggered mobility (L1 / L2-triggered mobility, LTM) is introduced in New Radio (NR) to shorten the cell switching delay and communication interruption delay of the terminal.

[0004] In LTM, the network configures multiple candidate cells for a terminal. If the measured cell or the cell selected during reestablishment is not one of the configured candidate cells, the terminal cannot promptly access the optimal cell (the measured cell or the cell selected during reestablishment). Therefore, what information should the terminal send to improve the timeliness of its access to the optimal cell has become a pressing technical issue. Summary of the Invention

[0005] The embodiments of the present application provide a communication method, device, and storage medium, which are applied to technical fields such as communications and terminals. In the method, the terminal sends LTM-related information to improve the timeliness of the terminal accessing the best cell.

[0006] In a first aspect, an embodiment of the present application provides a communication method, including:

[0007] At least one bottom layer triggered mobility handover LTM related information is sent, where the LTM related information includes or is used to determine a configuration application type of a target cell, where the configuration application type is LTM execution or LTM recovery.

[0008] In an embodiment of the present application, the terminal sends at least one LTM-related information to the network side device, wherein the LTM-related information includes or is used to determine the configuration application type of the target cell, and the configuration application type is LTM execution or LTM recovery. The LTM-related information sent by the terminal can enable the network side device to adjust the LTM configuration information, thereby improving the timeliness of the terminal's access to the target cell (optimal cell).

[0009] In a possible implementation, the LTM-related information further includes one or more of the following:

[0010] The first relevant information of the target cell, the second relevant information of the source cell, the third relevant information of the adjacent cell, the time interval from receiving the LTM configuration information to performing the LTM indicating the configuration application type, the time information from the last application of the configuration information of the target cell to the current application, the switching condition of the target cell, the absence of a suitable LTM candidate cell at the time of reconstruction, the fourth relevant information of the cell selected at the time of reconstruction, the reason for reporting a successful switching, the reason for reporting a radio link failure, or the length of time the cell is in residence.

[0011] In one possible implementation, the first relevant information, the second relevant information and the third relevant information include one or more of the following: a cell-related index, a cell indication (used to indicate whether the cell is an LTM candidate cell), a transmission configuration indication TCI state-related information, a reference signal index, a beam index, or measurement-related information.

[0012] In a possible implementation, the cell-related index includes any one of the following: a physical cell identifier, a global cell identifier, frequency information, a cell unique identifier, a pre-configured unique identifier, or a configuration-related index. The configuration-related index is specifically an LTM candidate index.

[0013] In a possible implementation, the TCI status related information includes a TCI status index;

[0014] The TCI state index is an uplink TCI state index, a combined TCI state index, or a downlink TCI state index.

[0015] In one possible implementation, the fourth relevant information includes one or more of the following: a selected cell-related index, a cell indication (used to indicate whether the cell is an LTM candidate cell), a selected beam index, a selected TCI state index, whether the selected TCI state is activated, and measurement-related information.

[0016] In a possible implementation, the method further includes: sending a first message to a network-side device, where the first message includes a first indication, and the first indication is used to indicate that LTM-related information is recorded.

[0017] In a possible implementation manner, the first message is any one of the following messages: a radio resource control RRC setup complete message, an RRC reconfiguration complete message, or an RRC recovery complete message.

[0018] In a possible implementation, the method further includes: receiving a second indication sent by the network-side device, where the second indication is used to instruct the terminal to send LTM-related information.

[0019] In a possible implementation, the sending of at least one LTM-related information includes:

[0020] The at least one LTM related information is sent according to the reporting configuration related information, where the reporting configuration related information includes or is used to determine a sending period of the LTM related information and / or a triggering event for sending the LTM related information.

[0021] In a possible implementation, the reporting configuration-related information is configured by the network or agreed upon by a protocol.

[0022] In one possible implementation, the at least one LTM-related information is all LTM-related information recorded according to recording-related configuration information, where the recording-related configuration information includes or is used to determine a recording period of the LTM-related information and / or a triggering event for recording the LTM-related information; or

[0023] The at least one LTM related information is part of the LTM related information among all the LTM related information.

[0024] In a possible implementation, the record-related configuration information is configured by the network or agreed upon by a protocol.

[0025] In a possible implementation, the recording period is a preset period, or between receiving the LTM configuration information and the second indication, or between receiving two adjacent second indications.

[0026] In a possible implementation manner, the partial LTM related information is at least one LTM related information recorded last in all the LTM related information.

[0027] In one possible implementation, the triggering event is any one of the following: a preset timer times out, the running time of the preset timer is greater than and / or equal to a first preset threshold, the proportion of the running time of the preset timer in the preset time is greater than and / or equal to a second preset threshold, the remaining time of the preset timer is less than and / or equal to a third preset threshold, the selected cell is an LTM candidate cell during reconstruction, the selected cell is not an LTM candidate cell during reconstruction, the LTM candidate cell change process is performed during reconstruction, LTM fails, the wireless link fails, or the handover fails.

[0028] In a possible implementation manner, the LTM related information is included in a successful handover report or a radio link failure report.

[0029] In a possible implementation, the LTM execution or LTM recovery is an LTM execution or LTM recovery based on an indication from a network-side device; or, the LTM execution or LTM recovery is a conditional LTM execution or LTM recovery.

[0030] In a second aspect, an embodiment of the present application provides a communication method, including:

[0031] At least one LTM related information is received, where the LTM related information includes or is used to determine a configuration application type of a target cell, where the configuration application type is LTM execution or LTM recovery.

[0032] In a possible implementation, the LTM-related information further includes one or more of the following:

[0033] The first relevant information of the target cell, the second relevant information of the source cell, the third relevant information of the adjacent cell, the time interval from receiving the LTM configuration information to performing the LTM indicating the configuration application type, the time information from the last application of the configuration information of the target cell to the current application, the switching condition of the target cell, the absence of a suitable LTM candidate cell at the time of reconstruction, the fourth relevant information of the cell selected at the time of reconstruction, the reason for reporting a successful switching, the reason for reporting a radio link failure, or the length of time the cell is in residence.

[0034] In one possible implementation, the first relevant information, the second relevant information and the third relevant information include one or more of the following: a cell-related index, a cell indication (used to indicate whether the cell is an LTM candidate cell), a transmission configuration indication TCI state-related information, a reference signal index, a beam index, or measurement-related information.

[0035] In a possible implementation, the cell-related index includes any one of the following: a physical cell identifier, a global cell identifier, frequency information, a cell unique identifier, a pre-configured unique identifier, or a configuration-related index. The configuration-related index is specifically an LTM candidate index.

[0036] In a possible implementation, the TCI status related information includes a TCI status index;

[0037] The TCI state index is an uplink TCI state index, a combined TCI state index, or a downlink TCI state index.

[0038] In one possible implementation, the fourth relevant information includes one or more of the following: a selected cell-related index, a cell indication (used to indicate whether the cell is an LTM candidate cell), a selected beam index, a selected TCI state index, whether the selected TCI state is activated, and measurement-related information.

[0039] In a possible implementation, the method further includes: receiving a first message sent by the terminal, where the first message includes a first indication, and the first indication is used to indicate that LTM-related information is recorded.

[0040] In a possible implementation manner, the first message is any one of the following messages: a radio resource control RRC setup complete message, an RRC reconfiguration complete message, or an RRC recovery complete message.

[0041] In a possible implementation manner, the method further includes: sending a second instruction to the terminal, where the second instruction is used to instruct the terminal to send LTM-related information.

[0042] In a possible implementation, the method further includes: sending reporting configuration related information to the terminal, where the reporting configuration related information includes or is used to determine a sending period of the LTM related information and / or a triggering event for sending the LTM related information.

[0043] In a possible implementation, the method further includes: sending record-related configuration information to the terminal, where the record-related configuration information includes or is used to determine a recording period of the LTM-related information and / or a triggering event for recording the LTM-related information.

[0044] In a possible implementation, the recording period is a preset period, or between receiving the LTM configuration information and the second indication, or between receiving two adjacent second indications.

[0045] In a possible implementation manner, the partial LTM related information is at least one LTM related information recorded last in all the LTM related information.

[0046] In one possible implementation, the triggering event is any one of the following: a preset timer times out, the running time of the preset timer is greater than and / or equal to a first preset threshold, the proportion of the running time of the preset timer in the preset time is greater than and / or equal to a second preset threshold, the remaining time of the preset timer is less than and / or equal to a third preset threshold, the selected cell is an LTM candidate cell during reconstruction, the selected cell is not an LTM candidate cell during reconstruction, the LTM candidate cell change process is performed during reconstruction, LTM fails, the wireless link fails, or the handover fails.

[0047] In a possible implementation manner, the LTM related information is included in a successful handover report or a radio link failure report.

[0048] In a possible implementation, the LTM execution or LTM recovery is based on an instruction from a network-side device; or

[0049] The LTM execution or LTM restoration is a conditional LTM execution or LTM restoration.

[0050] In a third aspect, an embodiment of the present application provides a communication device, the device comprising:

[0051] The first sending module is configured to send at least one bottom-layer triggered mobility handover LTM related information, where the LTM related information includes or is used to determine a configuration application type of a target cell, where the configuration application type is LTM execution or LTM recovery.

[0052] In a possible implementation, the LTM-related information further includes one or more of the following:

[0053] The first relevant information of the target cell, the second relevant information of the source cell, the third relevant information of the adjacent cell, the time interval from receiving the LTM configuration information to performing the LTM indicating the configuration application type, the time information from the last application of the configuration information of the target cell to the current application, the switching condition of the target cell, the absence of a suitable LTM candidate cell at the time of reconstruction, the fourth relevant information of the cell selected at the time of reconstruction, the reason for reporting a successful switching, the reason for reporting a radio link failure, or the length of time the cell is in residence.

[0054] In one possible implementation, the first relevant information, the second relevant information and the third relevant information include one or more of the following: a cell-related index, a cell indication (used to indicate whether the cell is an LTM candidate cell), a transmission configuration indication TCI state-related information, a reference signal index, a beam index, or measurement-related information.

[0055] In a possible implementation, the cell-related index includes any one of the following: a physical cell identifier, a global cell identifier, frequency information, a cell unique identifier, a pre-configured unique identifier, or a configuration-related index. The configuration-related index is specifically an LTM candidate index.

[0056] In a possible implementation, the TCI status related information includes a TCI status index;

[0057] The TCI state index is an uplink TCI state index, a combined TCI state index, or a downlink TCI state index.

[0058] In a possible implementation, the fourth relevant information includes one or more of the following:

[0059] Selected cell related index, cell indication (used to indicate whether the cell is an LTM candidate cell), selected beam index, selected TCI state index, whether the selected TCI state is activated, and measurement related information.

[0060] In a possible implementation, the first sending module is further configured to:

[0061] A first message is sent to a network-side device, where the first message includes a first indication, and the first indication is used to indicate that LTM-related information is recorded.

[0062] In a possible implementation, the first message is any one of the following messages: a radio resource control RRC setup complete message, an RRC reconfiguration complete message, or an RRC recovery complete message.

[0063] In a possible implementation, the device further includes:

[0064] The first receiving module is configured to receive a second instruction sent by the network side device, where the second instruction is used to instruct the terminal to send LTM related information.

[0065] In a possible implementation, the first sending module is specifically configured to:

[0066] The at least one LTM related information is sent according to the reporting configuration related information, where the reporting configuration related information includes or is used to determine a sending period of the LTM related information and / or a triggering event for sending the LTM related information.

[0067] In a possible implementation, the reporting configuration-related information is configured by the network or agreed upon by a protocol.

[0068] In one possible implementation, the at least one LTM-related information is all LTM-related information recorded according to recording-related configuration information, where the recording-related configuration information includes or is used to determine a recording period of the LTM-related information and / or a triggering event for recording the LTM-related information; or

[0069] The at least one LTM related information is part of the LTM related information among all the LTM related information.

[0070] In a possible implementation, the record-related configuration information is configured by the network or agreed upon by a protocol.

[0071] In a possible implementation, the recording period is a preset period, or between receiving the LTM configuration information and the second indication, or between receiving two adjacent second indications.

[0072] In a possible implementation manner, the partial LTM related information is at least one LTM related information recorded last in all the LTM related information.

[0073] In one possible implementation, the triggering event is any one of the following: a preset timer times out, the running time of the preset timer is greater than and / or equal to a first preset threshold, the proportion of the running time of the preset timer in the preset time is greater than and / or equal to a second preset threshold, the remaining time of the preset timer is less than and / or equal to a third preset threshold, the selected cell is an LTM candidate cell during reconstruction, the selected cell is not an LTM candidate cell during reconstruction, the LTM candidate cell change process is performed during reconstruction, LTM fails, the wireless link fails, or the handover fails.

[0074] In a possible implementation manner, the LTM related information is included in a successful handover report or a radio link failure report.

[0075] In a possible implementation, the LTM execution or LTM recovery is an LTM execution or LTM recovery based on an indication from a network-side device; or, the LTM execution or LTM recovery is a conditional LTM execution or LTM recovery.

[0076] In a fourth aspect, an embodiment of the present application provides a communication device, including:

[0077] The second receiving module is configured to receive at least one LTM related information, where the LTM related information includes or is used to determine a configuration application type of a target cell, where the configuration application type is LTM execution or LTM recovery.

[0078] In a possible implementation, the LTM-related information further includes one or more of the following:

[0079] The first relevant information of the target cell, the second relevant information of the source cell, the third relevant information of the adjacent cell, the time interval from receiving the LTM configuration information to performing the LTM indicating the configuration application type, the time information from the last application of the configuration information of the target cell to the current application, the switching condition of the target cell, the absence of a suitable LTM candidate cell at the time of reconstruction, the fourth relevant information of the cell selected at the time of reconstruction, the reason for reporting a successful switching, the reason for reporting a radio link failure, or the length of time the cell is in residence.

[0080] In one possible implementation, the first relevant information, the second relevant information and the third relevant information include one or more of the following: a cell-related index, a cell indication (used to indicate whether the cell is an LTM candidate cell), a transmission configuration indication TCI state-related information, a reference signal index, a beam index, or measurement-related information.

[0081] In a possible implementation, the cell-related index includes any one of the following: a physical cell identifier, a global cell identifier, frequency information, a cell unique identifier, a pre-configured unique identifier, or a configuration-related index. The configuration-related index is specifically an LTM candidate index.

[0082] In a possible implementation, the TCI status related information includes a TCI status index;

[0083] The TCI state index is an uplink TCI state index, a combined TCI state index, or a downlink TCI state index.

[0084] In one possible implementation, the fourth relevant information includes one or more of the following: a selected cell related index, a cell indication (used to indicate whether the cell is an LTM candidate cell), a selected beam index, a selected TCI state index, whether the selected TCI state is activated, or measurement related information.

[0085] In a possible implementation, the second receiving module is further configured to: receive a first message sent by the terminal, where the first message includes a first indication, and the first indication is used to indicate that LTM-related information is recorded.

[0086] In a possible implementation manner, the first message is any one of the following messages: a radio resource control RRC setup complete message, an RRC reconfiguration complete message, or an RRC recovery complete message.

[0087] In a possible implementation, the device further includes:

[0088] The second sending module is configured to send a second instruction to the terminal, where the second instruction is used to instruct the terminal to send LTM related information.

[0089] In a possible implementation, the second sending module is further configured to:

[0090] Sending reporting configuration related information to the terminal, where the reporting configuration related information includes or is used to determine a sending period of the LTM related information and / or a triggering event for sending the LTM related information.

[0091] In a possible implementation, the second sending module is further configured to send recording-related configuration information to the terminal, where the recording-related configuration information includes or is used to determine a recording period for the LTM-related information and / or a triggering event for recording the LTM-related information.

[0092] In a possible implementation, the recording period is a preset period, or between receiving the LTM configuration information and the second indication, or between receiving two adjacent second indications.

[0093] In a possible implementation manner, the partial LTM related information is at least one LTM related information recorded last in all the LTM related information.

[0094] In one possible implementation, the triggering event is any one of the following: a preset timer times out, the running time of the preset timer is greater than and / or equal to a first preset threshold, the proportion of the running time of the preset timer in the preset time is greater than and / or equal to a second preset threshold, the remaining time of the preset timer is less than and / or equal to a third preset threshold, the selected cell is an LTM candidate cell during reconstruction, the selected cell is not an LTM candidate cell during reconstruction, the LTM candidate cell change process is performed during reconstruction, LTM fails, the wireless link fails, or the handover fails.

[0095] In a possible implementation manner, the LTM related information is included in a successful handover report or a radio link failure report.

[0096] In a possible implementation, the LTM execution or LTM recovery is based on an instruction from a network-side device; or

[0097] The LTM execution or LTM restoration is a conditional LTM execution or LTM restoration.

[0098] In a fifth aspect, an embodiment of the present application provides an electronic device comprising a processor and a memory, the memory being used to store code instructions, and the processor being used to run the code instructions to execute the method described in the first aspect or any possible implementation of the first aspect, and the method described in the second aspect or any possible implementation of the second aspect.

[0099] In a sixth aspect, an embodiment of the present application provides a computer-readable storage medium, in which a computer program or instruction is stored. When the computer program or instruction is run on a computer, the computer executes the method described in the first aspect or any possible implementation of the first aspect, and the method described in the second aspect or any possible implementation of the second aspect.

[0100] In the seventh aspect, an embodiment of the present application provides a computer program product including a computer program, which, when the computer program is run on a computer, enables the computer to execute the method described in the first aspect or any possible implementation of the first aspect, and the method described in the second aspect or any possible implementation of the second aspect.

[0101] In an eighth aspect, the present application provides a chip or chip system, comprising at least one processor and a communication interface, wherein the communication interface and the at least one processor are interconnected by a line, and the at least one processor is configured to run a computer program or instruction to execute the method described in the first aspect or any possible implementation of the first aspect, and the method described in the second aspect or any possible implementation of the second aspect. The communication interface in the chip may be an input / output interface, a pin, or a circuit, etc.

[0102] In one possible implementation, the chip or chip system described above in this application further includes at least one memory, in which instructions are stored. The memory may be a storage unit within the chip, such as a register, a cache, etc., or a storage unit of the chip (e.g., a read-only memory, a random access memory, etc.).

[0103] It should be understood that the second to eighth aspects of the present application correspond to the technical solutions of the first aspect of the present application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation methods are similar and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0104] FIG1 is a schematic diagram of an application scenario provided by an embodiment of the present application;

[0105] FIG2 is a flow chart of a first embodiment of a communication method provided in an embodiment of the present application;

[0106] FIG3 is a flow chart of a second embodiment of a communication method provided in an embodiment of the present application;

[0107] FIG4 is a flow chart of a third embodiment of a communication method provided in an embodiment of the present application;

[0108] FIG5 is a flow chart of a fourth embodiment of a communication method provided in an embodiment of the present application;

[0109] FIG6 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0110] FIG7 is a schematic structural diagram of another communication device provided in an embodiment of the present application;

[0111] FIG8 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0112] To facilitate a clear description of the technical solutions of the embodiments of the present application, some of the terms and technologies involved in the embodiments of the present application are briefly introduced as follows:

[0113] 1. Long-Term Transaction (LTM)

[0114] The network-side device preconfigures multiple candidate cells for the terminal. Based on the L1 measurement results of the multiple candidate cells sent by the terminal, the network-side device continuously uses the handover command (i.e., LTM command) carried by the Medium Access Control Control Element (MAC CE) to trigger the terminal to execute LTM.

[0115] 2. LTM execution

[0116] The terminal applies the cell's configuration information and accesses the cell.

[0117] 3. LTM Recovery

[0118] After the terminal detects the radio link failure (RLF) of the main cell group MCG or the reconfiguration failure with synchronization or the mobility management failure, it performs cell reselection. If the reselected cell is still one of the LTM candidate cells related to the MCG, the LTM execution process is performed on the selected LTM candidate cell.

[0119] 4. Minimization Drive Test (MDT)

[0120] It is an automated drive test technology introduced by 3G Universal Mobile Telecommunications System (UMTS), 4G Long Term Evolution (LTE), and 5G New Radio (NR). It uses network-configured ordinary user / commercial terminals to collect, report, and preprocess measurement data.

[0121] When the terminal has the positioning system enabled and supports the MDT function, the terminal can automatically send MDT data containing user location information to the base station. MDT data is similar to a Measurement Report (MR). MDT data includes fields such as Reference Signal Received Power (RSRP) and Reference Signal Received Quality (RSRQ), as well as longitude and latitude information, which can be used for big data analysis. The positioning system can be, for example, the Global Positioning System (GPS), and the longitude and latitude information can be, for example, the GPS longitude and latitude information of the terminal.

[0122] The terminal may send the MDT data in real time or in non-real time.

[0123] The terminal may send the MDT data using a log (LOG); or send the MDT data through existing Radio Resource Management (RRM) measurement and reporting.

[0124] As an example, MDT data includes: (1) positioning information; (2) idle state information; (3) out-of-service area information; (4) serving cell signal below threshold report; (5) terminal transmit power margin below threshold report; (6) access failure report; (7) paging channel failure report; (8) broadcast channel failure report; (9) radio link failure report.

[0125] 5. Other terms

[0126] In the embodiments of this application, terms such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. For example, the terms "first chip" and "second chip" are used solely to distinguish between different chips and do not define their order. Those skilled in the art will understand that terms such as "first" and "second" do not define the quantity or execution order, and do not necessarily define differences.

[0127] In the embodiments of this application, words such as "exemplary," "for example," or "as an example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0128] In the embodiments of the present application, "at least one" refers to one or more, and "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, a--c, bc, or abc, where a, b, c can be single or multiple.

[0129] 6. Terminal

[0130] A terminal may also be referred to as a terminal device, user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user apparatus, etc. It may be an entity on the user side for receiving or transmitting signals, such as a mobile phone. Terminal devices include handheld devices, vehicle-mounted devices, wearable devices, or computing devices with wireless communication capabilities. For example, a UE may be a mobile phone, a tablet computer, or a computer with wireless transceiver capabilities. A terminal device may also be a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a wireless terminal in a smart grid, a wireless terminal in a smart city, a wireless terminal in a smart home, and the like. The terminal can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, etc. The terminal can be a mobile phone, tablet computer, computer with wireless transceiver function, wearable device, vehicle, drone, helicopter, airplane, ship, robot, robotic arm, smart home device, etc. In the embodiment of the present application, the device for implementing the function of the terminal can be a terminal; it can also be a device that can support the terminal to implement the function, such as a chip system, or a communication module, or a modem, which can be installed in the terminal. In the embodiment of the present application, the chip system can be composed of a chip, or it can include a chip and other discrete devices. In the technical solutions provided in the embodiments of the present application, the device for implementing the function of the terminal is a terminal, and the terminal is a UE as an example to describe the technical solutions provided in the embodiments of the present application. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

[0131] 7. Network side equipment

[0132] Able to communicate with the terminal, it can be a wireless access network (RAN) device. The wireless access network device can be a device with wireless transceiver functions. The wireless access network device can be a device that provides wireless communication function services, usually located on the network side, including but not limited to: the next generation base station (gNodeB, gNB) in the fifth generation (5G) communication system, the next generation base station in the sixth generation (6G) mobile communication system, the base station in the future mobile communication system or the access node in the WiFi system, etc., the evolved node B (eNB) in the long term evolution (LTE) system, the radio network controller (RNC), the node B (NB), the base station controller (BSC), the home base station (for example, home evolved NodeB, or home Node B, HNB), the base band unit (BBU), the transmission reception point (TRP), the transmitting point (TP), the base transceiver station (BTS), etc. In a network structure, the radio access network equipment may include a centralized unit (CU) node, a distributed unit (DU) node, or a RAN device including a CU node and a DU node, or a control plane CU node and a user plane CU node, as well as a RAN device of a DU node. The radio access network equipment provides services for a cell, and a user equipment communicates with a base station through the transmission resources used by the cell (e.g., frequency domain resources, or spectrum resources). The cell may be a cell corresponding to a base station (e.g., a base station), and the cell may belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.The radio access network device may be a macro base station, a micro base station, an indoor station, a relay node, a donor node, a device that provides wireless communication services to user equipment in a V2X communication system, a wireless controller in a cloud radio access network (CRAN) scenario, a relay station, a vehicle-mounted device, a wearable device, and a network-side device in a future evolution network. The radio access network device in this embodiment may also be an open radio access network (O-RAN) device, which may include an open distributed unit (O-DU) and an open centralized unit (O-CU).

[0133] In an embodiment of the present application, the terminal and / or network-side device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also known as main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software.

[0134] Figure 1 is a schematic diagram of an application scenario provided by an embodiment of the present application. As shown in Figure 1, it includes: a terminal and a network-side device. The terminal can wirelessly communicate with the network-side device.

[0135] The network side device may send LTM configuration information to the terminal. The LTM configuration information includes one or more of the following information about multiple candidate cells configured for the terminal: cell-related index, configuration information, or handover condition.

[0136] Currently, terminals can perform LTM based on LTM configuration information. During LTM, if the measured cell or the cell selected during reestablishment is a candidate cell in the above configuration, the terminal can promptly access the best cell (i.e., the measured cell or the cell selected during reestablishment). If the measured cell or the cell selected during reestablishment is not a candidate cell in the above configuration, the terminal cannot promptly access the best cell.

[0137] In order to enable the terminal to access the best cell in a timely manner, an embodiment of the present application provides a communication method, in which the terminal sends at least one LTM-related information to a network-side device; the network-side device can determine whether the LTM configuration information is appropriate based on the at least one LTM-related information. If it is determined that it is not appropriate, the LTM configuration information can be adjusted to enable the terminal to access the best cell in a timely manner.

[0138] The technical solutions shown in this application are described in detail below through specific embodiments. It should be noted that the following embodiments can exist independently or in combination with each other. For the same or similar content, such as the explanation of terms or nouns, and the explanation of steps, etc., different embodiments can refer to each other and will not be repeated.

[0139] FIG2 is a flow chart of a first embodiment of a communication method provided in an embodiment of the present application. As shown in FIG2 , the method includes:

[0140] S201. The terminal sends at least one layer-triggered mobility handover LTM-related information to a network-side device, where the LTM-related information includes or is used to determine a configuration application type of a target cell, where the configuration application type is LTM execution or LTM recovery.

[0141] The configuration application type of the target cell is the application type of the configuration information of the target cell.

[0142] The LTM execution indication indicates that the LTM is successful. As an example, the LTM success indication indicates that the LTM candidate cell change process is successful.

[0143] The LTM recovery indication fails. As an example, the failure includes, for example, LTM failure, radio link failure, or handover failure.

[0144] As an example, the configuration application type may be explicitly included or explicitly indicated in the LTM related information, or may be implicitly indicated.

[0145] As an example, when displaying the configuration application type, the configuration application type may be indicated by 1 bit. As an example, 1 indicates LTM execution, and 0 indicates LTM recovery.

[0146] As an example, when the application type is explicitly included or indicated, the application type can also be configured using an enumeration of switching types. For example, true indicates LTM execution and false indicates LTM recovery; or success indicates LTM execution and failure indicates LTM recovery.

[0147] As an example, when the configuration application type is implicitly indicated, at least one LTM-related information may be included in a successful handover report or a radio link failure report.

[0148] As an example, when implicitly indicating the configuration application type, LTM related information is included in the successful switching report, indicating that the configuration application type is LTM execution; LTM related information is included in the radio link failure report, indicating that the configuration application type is LTM recovery.

[0149] In a possible implementation, the LTM execution or LTM recovery is an LTM execution or LTM recovery based on an indication from a network-side device; or, the LTM execution or LTM recovery is a conditional LTM execution or LTM recovery.

[0150] As an example, when the configuration application type is LTM execution, the network-side device may adjust the LTM configuration information or may not adjust the LTM configuration information.

[0151] As an example, when the configuration application type is LTM recovery, the network-side device can adjust the LTM configuration information.

[0152] In an embodiment of the present application, the terminal sends at least one LTM-related information to the network side device, wherein the LTM-related information includes or is used to determine the configuration application type of the target cell, and the configuration application type is LTM execution or LTM recovery. The LTM-related information sent by the terminal can enable the network side device to adjust the LTM configuration information, thereby improving the timeliness of the terminal's access to the target cell (optimal cell).

[0153] In one possible implementation, the LTM-related information also includes one or more of the following: first relevant information of the target cell, second relevant information of the source cell, third relevant information of the adjacent cell, the time interval from receiving the LTM configuration information to configuring the LTM indicating the application type, time information from the last application of the configuration information of the target cell to this application, the switching condition of the target cell, the absence of a suitable LTM candidate cell at the time of reconstruction, fourth relevant information of the selected cell at the time of reconstruction, the reason for reporting a successful switching, the reason for reporting a wireless link failure, or the length of time the cell is in residence.

[0154] The source cell is the source cell of the target cell, and the adjacent cell is a cell adjacent to the target cell.

[0155] In one possible implementation, the first relevant information, the second relevant information, and the third relevant information include one or more of the following: a cell-related index, a cell indication (used to indicate whether it is an LTM candidate cell), transmission configuration indication (TCI) state-related information, a reference signal index, a beam index, and measurement-related information.

[0156] In one possible implementation, the cell-related index includes any of the following: a physical cell identifier (PCI), a global cell identifier, frequency information, a cell unique identifier (e.g., a cell ID), a preconfigured unique identifier (e.g., a preconfigured ID), or a configuration-related index. The frequency information may be, for example, an absolute radio frequency channel number. The configuration-related index is specifically an LTM candidate index.

[0157] In a possible implementation manner, the TCI state related information includes a TCI state index, which is an uplink TCI state index, a combined TCI state index, or a downlink TCI state index.

[0158] As an example, the measurement-related information includes one or more of the following: measured beam quality, measured cell quality, and measured quality corresponding to the first reference signal.

[0159] As an example, the beam quality can be: a beam-level measurement result based on a first reference signal-related measurement, or a beam-level measurement result based on a second reference signal-related measurement, or a measurement result of the best quality beam in the cell, a beam-level measurement result.

[0160] As an example, the quality of the cell may be: a cell-level measurement result based on the first reference signal-related measurement, a cell-level measurement result based on the second reference signal-related measurement, or a cell-level measurement result.

[0161] As an example, the first reference signal may include but is not limited to a synchronization signal block (Synchronization Signal / PBCH Block, SSB), a channel state information reference signal (Channel-State-Information Reference Signal, CSI-RS), a tracking reference signal (Tracking Reference Signal, TRS), etc.

[0162] As an example, the second reference signal may include but is not limited to a synchronization signal block (Synchronization Signal / PBCH Block, SSB), a channel state information reference signal (Channel-State-Information Reference Signal, CSI-RS), a tracking reference signal (Tracking Reference Signal, TRS), etc.

[0163] As an example, the first reference signal and the second reference signal may be different. For example, the first reference signal is SSB, and the second reference signal is CSI-RS.

[0164] As an example, the time information from the last application to the current application of the configuration information of the target cell may be: the time interval from the last application to the current application, or the absolute value of the time interval, or a predefined duration level corresponding to the time interval.

[0165] As an example, there is a first corresponding relationship, which includes multiple predefined duration levels and interval ranges corresponding to each predefined duration level. When the time interval is within an interval range, the predefined duration level corresponding to the time interval is the predefined duration level corresponding to the interval range where the time interval is located.

[0166] As an example, successful handover includes, for example: the handover is successful but the running time of the timer T304 is greater than and / or equal to a predefined time threshold.

[0167] As an example, the radio link failure includes one or more of the following: LTM handover failure, triggering LTM recovery, triggering the selected cell after reconstruction is not an LTM candidate cell, and triggering the selected cell after reconstruction is an LTM candidate cell.

[0168] In one possible implementation, the fourth relevant information includes one or more of the following: a selected cell-related index, a cell indication (used to indicate whether it is an LTM candidate cell), a selected beam index, a selected TCI state index, whether the selected TCI state is activated, and measurement-related information.

[0169] FIG3 is a flow chart of a second embodiment of the communication method provided in the embodiment of the present application. As shown in FIG3 , the method includes:

[0170] S301: The network-side device sends LTM configuration information to the terminal.

[0171] As an example, the network side device sends a radio resource control (Radio Resource Control, RRC) reconfiguration completion message to the terminal, and the RRC reconfiguration completion message includes LTM configuration information.

[0172] The LTM configuration information includes one or more of the following information of multiple cells: cell-related information, configuration information, and switching conditions.

[0173] S302: The terminal sends capability information to the network-side device.

[0174] The capability information is used to indicate whether the terminal has the capability to record and / or send LTM-related information.

[0175] As an example, in FIG3 , S302 may not be included.

[0176] S303: The network-side device sends record-related configuration information to the terminal.

[0177] In a possible implementation, recording relevant configuration information is configured by the network or agreed upon by a protocol.

[0178] It should be noted that FIG. 3 is described by taking the example of recording relevant configuration information configured by the network (ie S303 ).

[0179] In a possible implementation, the recording-related configuration information includes or is used to determine a recording period of the LTM-related information and / or a triggering event for recording the LTM-related information.

[0180] In a possible implementation, the recording period of the LTM-related information is a preset period, or between receiving the LTM configuration information and the second indication, or between receiving two adjacent second indications.

[0181] As an example, the start time of the recording period is the time when the LTM configuration information is received, and the end time of the recording period is the time when the second indication is received.

[0182] As an example, the start time of the recording period is the time when one second indication is received, and the end time of the recording period is the time when another second indication is received, wherein the another second indication is after the one second indication and is adjacent to the one second indication.

[0183] In one possible embodiment, the triggering event for recording LTM-related information is any one of the following: a preset timer times out, the running time of the preset timer is greater than and / or equal to a first preset threshold, the proportion of the running time of the preset timer in the preset time is greater than and / or equal to a second preset threshold, the remaining time of the preset timer is less than and / or equal to a third preset threshold, the proportion of the remaining time of the preset timer in the preset time is less than and / or equal to a fourth preset threshold, the selected cell is an LTM candidate cell during reconstruction, the selected cell is not an LTM candidate cell during reconstruction, the LTM candidate cell change process is performed during reconstruction, LTM failure, radio link failure (Radio Link Failure, RLF), or handover failure (handover failure).

[0184] LTM failure refers to unsuccessful handover to the target cell.

[0185] S304. The terminal records LTM-related information according to the record-related configuration information.

[0186] S304 is described in detail below with reference to some examples.

[0187] Example 11: The recording-related configuration information includes or is used to determine a recording period of the LTM-related information; the terminal records the LTM-related information according to the recording period.

[0188] Example 12: Recording related configuration information includes or is used to determine a triggering event for recording LTM related information; when a triggering event occurs, the terminal records the LTM related information.

[0189] Example 13: The recording-related configuration information includes or is used to determine a recording period for LTM-related information and a triggering event for recording LTM-related information; when a triggering event occurs, the terminal records the LTM-related information.

[0190] As an embodiment, the recording-related configuration information includes any of the following items: recording start time and recording end time, recording start time and recording duration, a timer for indicating recording, and a timer for indicating recording.

[0191] S305: The terminal sends a first message to the network-side device. The first message includes a first indication, and the first indication is used to indicate that LTM-related information is recorded.

[0192] In a possible implementation manner, the first message is any one of the following messages: an RRC setup complete message (RRCSetupComplete), an RRC reconfiguration complete message (RRCReconfigurationComplete), or an RRC recovery complete message (RRCResumeComplete).

[0193] S306: The network-side device sends a second instruction to the terminal, where the second instruction is used to instruct the terminal to send LTM-related information.

[0194] S307: The terminal sends at least one LTM-related information to the network-side device.

[0195] As an example, after S304 , S305 and S306 may not be executed, and S307 may be executed directly.

[0196] In a possible implementation, the at least one LTM-related information is all LTM-related information recorded according to the record-related configuration information; or, the at least one LTM-related information is part of the LTM-related information in all the LTM-related information.

[0197] In a possible implementation manner, the partial LTM related information is at least one LTM related information recorded last in all LTM related information.

[0198] As an example, the recording period is a preset period, and the partial LTM related information is the last LTM related information recorded within the preset period.

[0199] As an example, the recording period is between receiving the LTM configuration information and the second indication, and the portion of the LTM-related information is the most recently recorded LTM-related information before receiving the second indication. For example, the order of the recorded multiple LTM-related information and the receipt of the second indication is: LTM-related information 1, LTM-related information 2, ..., LTM-related information 5, then the second indication, and the most recently recorded LTM-related information is LTM-related information 5.

[0200] As an example, the recording period is between the receipt of two adjacent second indications, and the portion of LTM-related information is the most recently recorded LTM-related information before the second second indication is received. For example, the order of the recorded multiple LTM-related information and the receipt of the second indication is: second indication, LTM-related information 1, LTM-related information 2, ..., LTM-related information 5, second indication, and the most recently recorded LTM-related information is LTM-related information 5.

[0201] S308: The network-side device determines whether to adjust the LTM configuration information according to the at least one LTM-related information sent; if it is determined to adjust the LTM configuration information, the network-side device adjusts the LTM configuration information.

[0202] The following describes how to adjust LTM configuration information on network-side devices, using some LTM-related information.

[0203] Case 1: LTM related information includes or is used to determine the configuration application type of the target cell

[0204] The network side device determines whether the switching condition configuration of the target cell is unreasonable based on the configured application type.

[0205] Case 2: LTM related information includes: the time interval from receiving LTM configuration information to configuring the LTM application type indication

[0206] When the network-side device determines that the time interval is too long, after generally excluding other reasons, it determines that it may be because the reserved resources are occupied. In this case, the LTM trigger threshold in the switching condition of the target cell may be configured too high. In this case, the LTM trigger threshold should be lowered.

[0207] Case 3: LTM related information includes: the handover conditions of the target cell, the time interval from receiving the LTM configuration information to the LTM indicating the configuration application type

[0208] When the network-side device determines that the time interval is too long, it considers that the switching condition configuration is unreasonable, for example, the LTM trigger threshold is too high, and lowers the LTM trigger threshold.

[0209] When the LTM related information has the following cases 4 to 9, other behaviors of the network side device are described. Case 4, the LTM related information includes: the cell indication in the fourth related information is used to indicate that the cell is an LTM candidate cell

[0210] The network side device may lower the threshold of the switching condition of the LTM candidate cell, or the network side device may prefer to switch the LTM command to the LTM candidate cell rather than the target cell.

[0211] Case 5: LTM related information includes: No suitable LTM candidate cell exists during reconstruction

[0212] The network side device can configure the cell selected during reconstruction as an LTM candidate cell, configure at least one beam with the best reported quality as the beam of the LTM candidate cell; and / or configure at least one TCI state with the best reported quality as the TCI state of the LTM candidate cell.

[0213] Case 6, LTM related information includes: reasons for successful handover reporting and / or reasons for radio link failure reporting

[0214] The network-side device determines whether to send subsequent request information based on the reason for reporting successful handover and / or the reason for reporting radio link failure.

[0215] Case 7, LTM related information includes: configuration application type and cell-related index of the source cell

[0216] The network-side device can determine which cells are prone to failure in sending LTMs based on cell-related indexes and configured application types.

[0217] Case 8, LTM related information includes: configuration application type, target cell handover conditions and the time interval from receiving LTM configuration information to LTM indicating the configuration application type

[0218] When the network-side device determines that the time interval is too long, it may be considered that the LTM trigger threshold in the switching condition is too high, resulting in the inability to trigger LTM execution. In this case, the LTM trigger threshold should be lowered.

[0219] Case 9, LTM related information includes: configuration application type, time information from the last application of the target cell configuration information to the current application, and the switching conditions of the target cell

[0220] When the network-side device determines that the time information is too short, it may be considered that the LTM trigger threshold in the switching condition is too low, resulting in premature LTM execution. In this case, the LTM trigger threshold should be increased.

[0221] Furthermore, after adjusting the LTM configuration information, when subsequently sending the LTM configuration information to the terminal, more appropriate switching conditions or configuration information, as well as signaling delivery time, are selected to improve the timeliness of the terminal accessing the target cell.

[0222] FIG4 is a flow chart of a third embodiment of the communication method provided in the present application. As shown in FIG4 , the method includes:

[0223] S401: The network-side device sends LTM configuration information to the terminal.

[0224] S402: The terminal sends capability information to the network-side device.

[0225] It should be noted that the execution method of S401 and S402 is the same as the execution method of S301 and S302, and the execution process of S401 and S402 will not be repeated here.

[0226] S403: The network-side device sends record-related configuration information and report-related configuration information to the terminal.

[0227] In a possible implementation manner, reporting configuration-related information includes or is used to determine a time period for sending LTM-related information and / or a triggering event for sending LTM-related information.

[0228] The triggering event for sending LTM-related information may be any of the following: a preset timer times out, the running time of the preset timer is greater than and / or equal to a first preset threshold, the proportion of the running time of the preset timer in the preset time is greater than and / or equal to a second preset threshold, the remaining time of the preset timer is less than and / or equal to a third preset threshold, the proportion of the remaining time of the preset timer in the preset time is less than and / or equal to a fourth preset threshold, the selected cell is an LTM candidate cell during reconstruction, the selected cell is not an LTM candidate cell during reconstruction, the LTM candidate cell change process is performed during reconstruction, LTM failure, radio link failure (Radio Link Failure, RLF), or handover failure (handover failure).

[0229] As an example, the triggering event for sending the LTM-related information and the triggering event for recording the LTM-related information may be the same or different. For example, the triggering event is the expiration of a preset timer.

[0230] As an example, when the triggering event for recording LTM-related information and the triggering event for sending LTM-related information are the same, the terminal can record LTM-related information according to the triggering event before being in the connected state, and send LTM-related information to the network side device according to the triggering event when the terminal is in the connected state.

[0231] S404: The terminal records LTM-related information according to the record-related configuration information.

[0232] It should be noted that the execution method of S404 is the same as the execution method of S304, and the execution process of S404 is not repeated here.

[0233] S405: The terminal sends at least one LTM-related information to the network-side device according to the reported configuration-related information.

[0234] The execution process of S405 is described below with reference to some examples.

[0235] In Example 21, the reported configuration-related information includes or is used to determine a transmission period for LTM-related information; the terminal sends at least one LTM-related information to the network-side device according to the transmission period. Specifically, the at least one LTM-related information is sent to the network-side device within the transmission period; or, the at least one LTM-related information is sent every transmission period. The number of LTM-related information sent every transmission period may vary.

[0236] Example 22: The reported configuration-related information includes or is used to determine a triggering event for sending LTM-related information; when a triggering event occurs, the terminal sends at least one LTM-related information to the network-side device.

[0237] Example 23: The reported configuration-related information includes or is used to determine the sending period of LTM-related information and the triggering event for sending LTM-related information; when a triggering event occurs, the terminal sends at least one LTM-related information to the network-side device according to the sending period.

[0238] S406: The network-side device determines whether to adjust the LTM configuration information according to at least one LTM-related information, and adjusts the LTM configuration information if it is determined to adjust the LTM configuration information.

[0239] Specifically, the execution method of S406 is the same as that of S308, and the execution process of S406 is not repeated here.

[0240] FIG5 is a flow chart of a fourth embodiment of a communication method provided in an embodiment of the present application. As shown in FIG5 , the method includes:

[0241] S501: The network-side device sends LTM configuration information to the terminal.

[0242] S502: The network-side device sends a second instruction to the terminal.

[0243] S503: The terminal sends at least one LTM-related information to the network-side device according to the second instruction.

[0244] As an example, the at least one LTM-related information may be all LTM-related information recorded by the terminal according to the recording-related configuration information, or part of the LTM-related information in all LTM-related information.

[0245] As an example, the recording-related configuration information is predetermined by a protocol or pre-set in the terminal.

[0246] As an example, the recording-related configuration information includes or is used to determine the recording period.

[0247] As an example, the recording period is between receiving the LTM configuration information and the second indication; all LTM related information is the LTM related information recorded by the terminal between receiving the LTM configuration information and the second indication.

[0248] As an example, the recording period is between the last time the second indication is received and the current time the second indication is received; all LTM related information is the LTM related information recorded by the terminal between the last time the second indication is received and the current time the second indication is received.

[0249] As an example, the recording period is a preset period; all LTM related information is LTM related information recorded by the terminal within the preset period.

[0250] The partial LTM related information may be one or more LTM related information recorded last in all the LTM related information.

[0251] S504: The network-side device determines whether to adjust the LTM configuration information according to at least one LTM-related information, and adjusts the LTM configuration information if it is determined to adjust the LTM configuration information.

[0252] Specifically, the execution method of S504 is the same as that of S308, and the execution process of S504 is not repeated here.

[0253] The communication method of the embodiment of the present application has been described above. The device for executing the above method provided by the embodiment of the present application is described below. Those skilled in the art will understand that the method and device can be combined and referenced with each other, and the relevant device provided by the embodiment of the present application can perform the steps in the above list sorting method.

[0254] FIG6 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. As shown in FIG6 , the communication device 60 includes:

[0255] The first sending module 601 is configured to send at least one bottom layer triggered mobility handover LTM related information, where the LTM related information includes or is used to determine a configuration application type of a target cell, where the configuration application type is LTM execution or LTM recovery.

[0256] The communication device 60 provided in the embodiment of the present application can execute the method steps executed by the terminal in the technical solution shown in the above method embodiment. Its implementation principles and beneficial effects are similar and will not be repeated here.

[0257] In a possible implementation, the LTM-related information further includes one or more of the following:

[0258] The first relevant information of the target cell, the second relevant information of the source cell, the third relevant information of the adjacent cell, the time interval from receiving the LTM configuration information to performing the LTM indicating the configuration application type, the time information from the last application of the configuration information of the target cell to the current application, the switching condition of the target cell, the absence of a suitable LTM candidate cell at the time of reconstruction, the fourth relevant information of the cell selected at the time of reconstruction, the reason for reporting a successful switching, the reason for reporting a radio link failure, or the length of time the cell is in residence.

[0259] In one possible implementation, the first relevant information, the second relevant information and the third relevant information include one or more of the following: a cell-related index, a cell indication (used to indicate whether the cell is an LTM candidate cell), a transmission configuration indication TCI state-related information, a reference signal index, a beam index, or measurement-related information.

[0260] In a possible implementation, the cell-related index includes any one of the following: a physical cell identifier, a global cell identifier, frequency information, a cell unique identifier, a pre-configured unique identifier, or a configuration-related index. The configuration-related index is specifically an LTM candidate index.

[0261] In a possible implementation, the TCI status related information includes a TCI status index;

[0262] The TCI state index is an uplink TCI state index, a combined TCI state index, or a downlink TCI state index.

[0263] In one possible implementation, the fourth relevant information includes one or more of the following: a selected cell-related index, a cell indication, a selected beam index, a selected TCI state index, whether the selected TCI state is activated, or measurement-related information.

[0264] In a possible implementation, the first sending module 601 is further configured to:

[0265] A first message is sent to a network-side device, where the first message includes a first indication, and the first indication is used to indicate that LTM-related information is recorded.

[0266] In a possible implementation manner, the first message is any one of the following messages: a radio resource control RRC setup complete message, an RRC reconfiguration complete message, or an RRC recovery complete message.

[0267] In a possible implementation, the device further includes:

[0268] The first receiving module 602 is configured to receive a second instruction sent by the network-side device, where the second instruction is used to instruct the terminal to send LTM-related information.

[0269] In a possible implementation, the first sending module 601 is specifically configured to:

[0270] The at least one LTM related information is sent according to the reporting configuration related information, where the reporting configuration related information includes or is used to determine a sending period of the LTM related information and / or a triggering event for sending the LTM related information.

[0271] In a possible implementation, the reporting configuration-related information is configured by the network or agreed upon by a protocol.

[0272] In one possible implementation, the at least one LTM-related information is all LTM-related information recorded according to recording-related configuration information, where the recording-related configuration information includes or is used to determine a recording period of the LTM-related information and / or a triggering event for recording the LTM-related information; or

[0273] The at least one LTM related information is part of the LTM related information among all the LTM related information.

[0274] In a possible implementation, the record-related configuration information is configured by the network or agreed upon by a protocol.

[0275] In a possible implementation, the recording period is a preset period, or between receiving the LTM configuration information and the second indication, or between receiving two adjacent second indications.

[0276] In a possible implementation manner, the partial LTM related information is at least one LTM related information recorded last in all the LTM related information.

[0277] In a possible implementation, the triggering event is any one of the following:

[0278] The preset timer times out, the running time of the preset timer is greater than and / or equal to the first preset threshold, the proportion of the running time of the preset timer in the preset time is greater than and / or equal to the second preset threshold, the remaining time of the preset timer is less than and / or equal to the third preset threshold, the selected cell is the LTM candidate cell during reconstruction, the selected cell is not the LTM candidate cell during reconstruction, the LTM candidate cell change process is performed during reconstruction, LTM fails, the wireless link fails, or the handover fails.

[0279] In a possible implementation manner, the LTM related information is included in a successful handover report or a radio link failure report.

[0280] In a possible implementation, the LTM execution or LTM recovery is an LTM execution or LTM recovery based on an indication from a network-side device; or, the LTM execution or LTM recovery is a conditional LTM execution or LTM recovery.

[0281] The communication device 60 provided in the embodiment of the present application can execute the method steps executed by the terminal in the technical solution shown in the above method embodiment. Its implementation principles and beneficial effects are similar and will not be repeated here.

[0282] FIG7 is a schematic diagram of the structure of another communication device provided in an embodiment of the present application. As shown in FIG7 , the communication device 70 includes:

[0283] The second receiving module 701 is configured to receive at least one LTM related information, where the LTM related information includes or is used to determine a configuration application type of a target cell, where the configuration application type is LTM execution or LTM recovery.

[0284] The communication device 70 provided in the embodiment of the present application can execute the method steps performed by the network side device in the technical solution shown in the above method embodiment. Its implementation principles and beneficial effects are similar and will not be repeated here.

[0285] In a possible implementation, the LTM-related information further includes one or more of the following:

[0286] First relevant information of the target cell, second relevant information of the source cell, third relevant information of the neighboring cell, time interval from receiving LTM configuration information to performing LTM indicating the configuration application type, time information from the last application of the configuration information of the target cell to the current application, switching conditions of the target cell, absence of suitable LTM candidate cells at the time of reconstruction, fourth relevant information of the cell selected at the time of reconstruction, reason for successful handover reporting, reason for radio link failure reporting, or cell residence time

[0287] In one possible implementation, the first relevant information, the second relevant information and the third relevant information include one or more of the following: a cell-related index, a cell indication (used to indicate whether the cell is an LTM candidate cell), a transmission configuration indication TCI state-related information, a reference signal index, a beam index, or measurement-related information.

[0288] In a possible implementation, the cell-related index includes any one of the following: a physical cell identifier, a global cell identifier, frequency information, a cell unique identifier, a pre-configured unique identifier, or a configuration-related index. The configuration-related index is specifically an LTM candidate index.

[0289] In a possible implementation, the TCI status related information includes a TCI status index;

[0290] The TCI state index is an uplink TCI state index, a combined TCI state index, or a downlink TCI state index.

[0291] In a possible implementation, the fourth relevant information includes one or more of the following:

[0292] Selected cell related index, cell indication, selected beam index, selected TCI state index, whether the selected TCI state is activated, or measurement related information.

[0293] In a possible implementation, the second receiving module 701 is further configured to:

[0294] A first message sent by a receiving terminal is received, where the first message includes a first indication, and the first indication is used to indicate that LTM-related information is recorded.

[0295] In a possible implementation manner, the first message is any one of the following messages: a radio resource control RRC setup complete message, an RRC reconfiguration complete message, or an RRC recovery complete message.

[0296] In a possible implementation, the device further includes:

[0297] The second sending module 702 is configured to send a second instruction to the terminal, where the second instruction is used to instruct the terminal to send LTM-related information.

[0298] In a possible implementation, the second sending module 702 is further configured to:

[0299] Sending reporting configuration related information to the terminal, where the reporting configuration related information includes or is used to determine a sending period of the LTM related information and / or a triggering event for sending the LTM related information.

[0300] In a possible implementation, the second sending module 702 is further configured to:

[0301] The recording-related configuration information is sent to the terminal, where the recording-related configuration information includes or is used to determine a recording period of the LTM-related information and / or a triggering event for recording the LTM-related information.

[0302] In a possible implementation, the recording period is a preset period, or between receiving the LTM configuration information and the second indication, or between receiving two adjacent second indications.

[0303] In a possible implementation manner, the partial LTM related information is at least one LTM related information recorded last in all the LTM related information.

[0304] In one possible implementation, the triggering event is any one of the following: a preset timer times out, the running time of the preset timer is greater than and / or equal to a first preset threshold, the proportion of the running time of the preset timer in the preset time is greater than and / or equal to a second preset threshold, the remaining time of the preset timer is less than and / or equal to a third preset threshold, the selected cell is an LTM candidate cell during reconstruction, the selected cell is not an LTM candidate cell during reconstruction, the LTM candidate cell change process is performed during reconstruction, LTM fails, the wireless link fails, or the handover fails.

[0305] In a possible implementation manner, the LTM related information is included in a successful handover report or a radio link failure report.

[0306] In a possible implementation, the LTM execution or LTM recovery is based on an instruction from a network-side device; or

[0307] The LTM execution or LTM restoration is a conditional LTM execution or LTM restoration.

[0308] The communication device 70 provided in the embodiment of the present application can execute the method steps performed by the network side device in the technical solution shown in the above method embodiment. Its implementation principles and beneficial effects are similar and will not be repeated here.

[0309] It should be noted that the module names involved in the embodiments of the present application can be defined as other names as long as the functions of each module can be achieved, and there is no specific restriction on the names of the modules.

[0310] Figure 8 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. As shown in Figure 8, the electronic device 80 may include: a memory 801, a processor 802, and a transceiver 803. The transceiver 803 may include: a transmitter and / or a receiver. The transmitter may also be referred to as a transmitter, a transmitter, a transmitting port, a transmitting interface, or similar descriptions, and the receiver may also be referred to as a receiver, a receiving port, a receiving interface, or similar descriptions. Exemplarily, the memory 801, the processor 802, and the transceiver 803 are interconnected via a bus 804.

[0311] The memory 801 is used to store computer-executable programs or instructions.

[0312] The processor 802 is configured to execute the computer-executable program or instructions stored in the memory 801, so that the electronic device performs the method steps performed by the network-side device or terminal in the above-mentioned method embodiment. The implementation principle and technical effects thereof are similar to those of the above-mentioned related embodiments and will not be described in detail here.

[0313] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in the embodiments of the present application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of the relevant countries and regions, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0314] This application provides a chip or chip system comprising at least one processor and a communication interface. The communication interface and the at least one processor are interconnected via a circuit. The at least one processor is configured to execute a computer program or instruction to implement the method steps performed by the network-side device or terminal in the above-described method embodiments. The implementation principles and technical effects thereof are similar to those of the above-described related embodiments and are not further described here.

[0315] The present application also provides a computer-readable storage medium having a computer program or instructions stored therein. When the computer program or instructions are executed on a computer, the computer executes the method steps performed by the network-side device or terminal in the above-described method embodiment.

[0316] The methods described in the above embodiments can be implemented in whole or in part through software, hardware, firmware, or any combination thereof. If implemented in software, the functions can be stored as one or more instructions or codes on a computer-readable medium or transmitted on a computer-readable medium. Computer-readable media can include computer storage media and communication media, and can also include any medium that can transfer a computer program from one place to another. The storage medium can be any target medium that can be accessed by a computer.

[0317] In one possible implementation, computer-readable media may include RAM, ROM, compact disc read-only memory (CD-ROM) or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium designed to carry or store the desired program code in the form of instructions or data structures and accessible by a computer. Moreover, any connection is appropriately referred to as a computer-readable medium. For example, if a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwave are used to transmit software from a website, server or other remote source, the coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwave are included in the definition of medium. Disk and optical disk as used herein include optical disk, laser disk, optical disk, digital versatile disk (DVD), floppy disk and Blu-ray disk, where disks generally reproduce data magnetically, while optical disks reproduce data optically using lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0318] An embodiment of the present application provides a computer program product, which includes a computer program. When the computer program runs on a computer, it enables the computer to execute the method steps executed by the network-side device or terminal in the above method embodiment.

[0319] The present application embodiment is described with reference to the flow chart and / or block diagram of the method, device (system) and computer program product according to the embodiment of the present application.It should be understood that each flow process and / or box in the flow chart and / or block diagram and the combination of the flow process and / or box in the flow chart and / or block diagram can be realized by computer program instructions.These computer program instructions can be provided to the processing unit of general-purpose computer, special-purpose computer, embedded processing machine or other programmable device to produce a machine, so that the instruction executed by the processing unit of computer or other programmable data processing device produces the device for realizing the function specified in one flow chart flow or multiple flows and / or one block or multiple blocks of block diagram.

[0320] The above specific implementation methods further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific implementation methods of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the present invention should be included in the scope of protection of the present invention.

Claims

1. A communication method, characterized in that: include: At least one bottom layer triggered mobility handover LTM related information is sent, where the LTM related information includes or is used to determine a configuration application type of a target cell, where the configuration application type is LTM execution or LTM recovery.

2. The method according to claim 1, characterized in that The LTM-related information may also include one or more of the following: first relevant information of the target cell; second relevant information of the source cell; third related information of the neighboring cells; the time interval between receiving the LTM configuration information and the LTM performing the configuration application type indication; Time information from the last application of the configuration information of the target cell to the current application; Handover conditions of the target cell; There are no suitable LTM candidate cells at the time of reconstruction; fourth related information of the cell selected during reconstruction; Reason for successful switching report; Reason for reporting radio link failure; or, Length of stay in the cell.

3. The method according to claim 2, characterized in that The first relevant information, the second relevant information, and the third relevant information include one or more of the following: Cell related index; Cell indication, used to indicate whether the cell is an LTM candidate cell; Transmission Configuration Indication TCI status related information; Reference signal index; beam index; or, Measurement related information.

4. The method according to claim 3, characterized in that The cell-related index includes any of the following: Physical cell identification; Global cell identification; Frequency information; Unique identifier of the cell; A pre-configured unique identifier; or, The configuration-related index is specifically an LTM candidate index.

5. The method according to claim 3 or 4, characterized in that The TCI status related information includes a TCI status index; The TCI state index is an uplink TCI state index, a combined TCI state index, or a downlink TCI state index.

6. The method according to any one of claims 2 to 5, characterized in that: The fourth relevant information includes one or more of the following: The relevant index of the selected cell; Cell indication, used to indicate whether the cell is an LTM candidate cell; selected beam index; The selected TCI state index; Whether the selected TCI state is activated; Measurement related information.

7. The method according to any one of claims 1 to 6, characterized in that The method further comprises: A first message is sent to a network-side device, where the first message includes a first indication, and the first indication is used to indicate that LTM-related information is recorded.

8. The method according to claim 7, characterized in that The first message is any of the following messages: Radio Resource Control RRC setup complete message; RRC reconfiguration complete message; or, RRC recovery complete message.

9. The method according to any one of claims 1 to 8, characterized in that The method further comprises: A second instruction sent by a network-side device is received, where the second instruction is used to instruct the terminal to send LTM-related information.

10. The method according to any one of claims 1 to 9, characterized in that The sending of at least one LTM related information includes: The at least one LTM related information is sent according to the reporting configuration related information, where the reporting configuration related information includes or is used to determine a sending period of the LTM related information and / or a triggering event for sending the LTM related information.

11. The method according to claim 10, characterized in that The reporting configuration related information is configured by the network or agreed upon by the protocol.

12. The method according to any one of claims 1 to 11, characterized in that The at least one LTM-related information is all LTM-related information recorded according to the recording-related configuration information, wherein the recording-related configuration information includes or is used to determine a recording period of the LTM-related information and / or a triggering event for recording the LTM-related information; or, The at least one LTM related information is part of the LTM related information among all the LTM related information.

13. The method according to claim 12, characterized in that The record-related configuration information is configured by the network or agreed upon by the protocol.

14. The method according to claim 12 or 13, characterized in that The recording period is a preset period, or between receiving the LTM configuration information and the second indication, or between receiving two adjacent second indications.

15. The method according to any one of claims 12 to 14, characterized in that: The partial LTM related information is at least one LTM related information recorded last in all the LTM related information.

16. The method according to any one of claims 11 to 15, characterized in that The triggering event is any of the following: The preset timer times out; The running time of the preset timer is greater than and / or equal to the first preset threshold; The proportion of the running time of the preset timer in the preset time is greater than and / or equal to the second preset threshold; The remaining duration of the preset timer is less than and / or equal to a third preset threshold; The cell selected during reconstruction is the LTM candidate cell; The cell selected during reconstruction is not an LTM candidate cell; LTM failure; The wireless link fails; or, Switching failed.

17. The method according to any one of claims 1 to 16, characterized in that The LTM related information is included in a successful handover report or a radio link failure report.

18. The method according to any one of claims 1 to 17, characterized in that The LTM execution or LTM recovery is based on an LTM execution or LTM recovery indicated by a network-side device; or The LTM execution or LTM restoration is a conditional LTM execution or LTM restoration.

19. A communication method, characterized in that: include: At least one LTM related information is received, where the LTM related information includes or is used to determine a configuration application type of a target cell, where the configuration application type is LTM execution or LTM recovery.

20. The method according to claim 19, characterized in that The LTM-related information may also include one or more of the following: first relevant information of the target cell; second relevant information of the source cell; third related information of the neighboring cells; the time interval between receiving the LTM configuration information and the LTM performing the configuration application type indication; Time information from the last application to the current application of the configuration information of the target cell; or Handover conditions of the target cell; There are no suitable LTM candidate cells at the time of reconstruction; fourth related information of the cell selected during reconstruction; Reason for successful switching report; Reasons for reporting wireless link failures; Length of stay in the cell.

21. The method according to claim 19 or 20, characterized in that The method further comprises: A first message sent by a receiving terminal is received, where the first message includes a first indication, and the first indication is used to indicate that LTM-related information is recorded.

22. The method according to any one of claims 19 to 21, characterized in that The method further comprises: A second instruction is sent to the terminal, where the second instruction is used to instruct the terminal to send LTM-related information.

23. The method according to any one of claims 19 to 22, characterized in that: The method further comprises: Sending reporting configuration related information to the terminal, where the reporting configuration related information includes or is used to determine a sending period of the LTM related information and / or a triggering event for sending the LTM related information.

24. The method according to any one of claims 19 to 23, characterized in that The method further comprises: The recording-related configuration information is sent to the terminal, where the recording-related configuration information includes or is used to determine a recording period of the LTM-related information and / or a triggering event for recording the LTM-related information.

25. The method according to any one of claims 1 to 24, characterized in that The LTM related information is included in a successful handover report or a radio link failure report.

26. The method according to any one of claims 1 to 25, characterized in that The LTM execution or LTM recovery is based on an LTM execution or LTM recovery indicated by a network-side device; or The LTM execution or LTM restoration is a conditional LTM execution or LTM restoration.

27. An electronic device, characterized in that: include: processor and memory; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the electronic device performs the method according to any one of claims 1 to 26.

28. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 26 is implemented.

29. A chip system, characterized in that: The system comprises at least one processor and a communication interface, wherein the communication interface and the at least one processor are interconnected via a line, and the at least one processor is configured to run a computer program or instruction to execute the method according to any one of claims 1 to 26.

30. A computer program product, characterized in that The method comprises a computer program which, when being executed, causes a computer to execute the method according to any one of claims 1 to 26.

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