Mobility failure processing method and apparatus, and terminal and network device

Abstract

Provided in the present disclosure are a mobility failure processing method and apparatus, and a terminal and a network device. The method comprises: when a terminal is configured with layer 1 and / or layer 2 triggered mobility (LTM) configuration information, if a failure occurs, the terminal recording first information, wherein the first information is LTM-related failure information; and the terminal sending the first information to a network device.

Description

Mobility failure processing method, device, terminal and network equipment

[0001] This disclosure claims priority to the Chinese patent application filed with the China Patent Office on November 23, 2023, with application number 202311576008.8 and application name “Mobility failure processing method, device, terminal and network equipment”, all contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the field of communication technologies, and in particular to a method, apparatus, terminal, and network equipment for handling mobility failures. Background Art

[0003] Layer 1 and / or Layer 2 triggered mobility (L1 / L2 triggered mobility, LTM) mechanism: The network device pre-configures multiple candidate cell configurations and Layer 1 measurement configurations for user equipment (UE). The UE performs and reports Layer 1 measurements based on the configured Layer 1 measurement configurations. The network device then sends an LTM cell switch command to the UE based on the reported Layer 1 measurement results. Further optimization is needed to address potential LTM mobility failures in UEs.

[0004] Summary of the Invention

[0005] The purpose of the present disclosure is to provide a method, apparatus, terminal and network equipment for handling mobility failure, so as to optimize the problem of LTM mobility failure occurring in a terminal.

[0006] An embodiment of the present disclosure provides a method for handling mobility failure, applied to a terminal, the method comprising:

[0007] When the terminal is configured with layer 1 and / or layer 2 triggered mobility LTM configuration information, if a failure occurs, recording first information, where the first information is LTM-related failure information;

[0008] The terminal sends the first information to the network device.

[0009] In some embodiments, when the mobility LTM configuration information triggered by layer 1 and / or layer 2 is configured, if a failure occurs, recording the first information includes at least one of the following:

[0010] When the terminal is configured with the mobility LTM configuration information triggered by layer 1 and / or layer 2, if a single failure occurs, recording the first information;

[0011] When the terminal is configured with the mobility LTM configuration information triggered by layer 1 and / or layer 2, if continuous failures occur, the terminal records the first information, where the continuous failures include at least two failures.

[0012] In some embodiments, the single failure includes one of the following:

[0013] Failed to execute LTM;

[0014] Radio Link Failure (RLF) occurs in the source cell;

[0015] Failed to perform a traditional cell change.

[0016] In some embodiments, the consecutive failures include one of the following:

[0017] The LTM execution fails, and the LTM recovery fails;

[0018] RLF occurs in the source cell and LTM recovery fails;

[0019] The traditional cell change fails and the recovery via LTM fails;

[0020] If LTM fails and LTM recovery succeeds, RLF occurs within the first time of accessing the target cell.

[0021] An RLF occurs in the source cell, is successfully recovered through LTM, and an RLF occurs within the second time of accessing the target cell;

[0022] The traditional cell change fails, but LTM recovery succeeds, and RLF occurs within the third time of accessing the target cell.

[0023] In some embodiments, the first information includes at least one of the following:

[0024] Information about the failure to execute LTM;

[0025] Information about LTM recovery failures;

[0026] Information about the time when the failure occurred;

[0027] Indicates whether subsequent LTMs are supported.

[0028] In some embodiments, the information related to the failure to execute the LTM includes at least one of the following:

[0029] The first indication information is used to indicate the LTM execution type;

[0030] LTM cell change information;

[0031] Identification information of LTM candidate cells;

[0032] Layer 1 measurement result information of LTM candidate cells;

[0033] Layer 1 measurement configuration information of LTM candidate cells;

[0034] Information on the status of the Transmission Configuration Indicator (TCI) activated in advance;

[0035] The second indication information is used to indicate whether the execution mode of LTM is a random access channel (RACH) or a non-RACH;

[0036] The timing advance (TA) value of the target cell determined by the terminal;

[0037] Configured Grant (CG) configuration information of the target cell;

[0038] The value of the LTM timer;

[0039] The time between the time the terminal receives the LTM configuration information and the time the LTM execution fails;

[0040] The time between the moment when the terminal fails to execute the LTM and the moment when the first information is sent to the network device;

[0041] Refer to the configuration information;

[0042] Configuration information of LTM candidate cells;

[0043] The candidate cell executes the configuration information.

[0044] In some embodiments, the information related to the LTM recovery failure includes at least one of the following:

[0045] LTM restores the identification information of the cell;

[0046] The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell;

[0047] The TA value of the LTM recovery cell determined by the terminal;

[0048] Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process;

[0049] The fifth indication information is used to indicate whether the terminal has restored downlink synchronization of the cell with the LTM;

[0050] LTM restores the CG configuration information of the cell;

[0051] Refer to the configuration information;

[0052] LTM restores the cell configuration information;

[0053] Identification information of the cell where the radio link failure occurs.

[0054] In some embodiments, the information related to the time when the failure occurred includes at least one of the following:

[0055] The time between the time the terminal receives the LTM configuration information and the time when RLF occurs;

[0056] The time between the moment the terminal receives the LTM configuration information and the moment the traditional cell change fails;

[0057] The time between the moment when the terminal receives the LTM configuration information and the moment when the first information is sent to the network device;

[0058] The time between the time when the RLF occurs in the terminal and the time when the first information is sent to the network device;

[0059] The time between the moment when the terminal fails to change the traditional cell and the moment when the first information is sent to the network device.

[0060] In some embodiments, the LTM cell change information includes at least one of the following:

[0061] TCI status identification information;

[0062] Target configuration identification information;

[0063] TA value of the target cell;

[0064] Contention Free Random Access (CFRA) resource information.

[0065] In some embodiments, the recording of the first information includes at least one of the following:

[0066] recording the first information in a report;

[0067] The first information is recorded in different reports, and association relationships are established between different reports.

[0068] In some embodiments, establishing associations between different reports includes at least one of the following:

[0069] Establish associations between different reports through parameters in different reports;

[0070] Setting indication information in the report, and establishing association relationships between different reports through the indication information;

[0071] Establish associations between different reports through timestamps;

[0072] The association relationship between different reports is established through the terminal identification information.

[0073] In some embodiments, the method further comprises:

[0074] Receive a request message sent by a network device;

[0075] The sending the first information to the network device includes:

[0076] The first information is sent to the network device according to the request message.

[0077] In some embodiments, before receiving the request message sent by the network device, the method further includes:

[0078] Send sixth indication information to the network device, where the sixth indication information is used to indicate that the terminal stores the first information.

[0079] An embodiment of the present disclosure provides a method for handling mobility failure, which is applied to a network device and includes:

[0080] The network side device receives first information sent by the terminal, where the first information is recorded when the terminal is configured with LTM configuration information and a failure occurs; the first information is LTM-related failure information.

[0081] In some embodiments, the failure comprises a single failure and / or consecutive failures, wherein the consecutive failures comprise at least two failures.

[0082] In some embodiments, the single failure includes one of the following:

[0083] Failed to execute LTM;

[0084] RLF occurs in the source cell;

[0085] Failed to perform a traditional cell change.

[0086] In some embodiments, the consecutive failures include one of the following:

[0087] The LTM execution fails, and the LTM recovery fails;

[0088] RLF occurs in the source cell and LTM recovery fails;

[0089] The traditional cell change fails and the recovery via LTM fails;

[0090] If LTM fails and LTM recovery succeeds, RLF occurs within the first time of accessing the target cell.

[0091] An RLF occurs in the source cell, is successfully recovered through LTM, and an RLF occurs within the second time of accessing the target cell;

[0092] The traditional cell change fails, but LTM recovery succeeds, and RLF occurs within the third time of accessing the target cell.

[0093] In some embodiments, the first information includes at least one of the following:

[0094] Information about the failure to execute LTM;

[0095] Information about LTM recovery failures;

[0096] Information about the time when the failure occurred;

[0097] Indicates whether subsequent LTMs are supported.

[0098] In some embodiments, the information related to the failure to execute the LTM includes at least one of the following:

[0099] The first indication information is used to indicate the LTM execution type;

[0100] LTM cell change information;

[0101] Identification information of LTM candidate cells;

[0102] Layer 1 measurement result information of LTM candidate cells;

[0103] Layer 1 measurement configuration information of LTM candidate cells;

[0104] Information about the status of the transmission configuration indication TCI activated in advance;

[0105] The second indication information is used to indicate whether the execution mode of LTM is a random access channel RACH or non-RACH;

[0106] The TA value of the target cell determined by the terminal;

[0107] Configuration authorization CG configuration information of the target cell;

[0108] The value of the LTM timer;

[0109] The time between the time the terminal receives the LTM configuration information and the time the LTM execution fails;

[0110] The time between the moment when the terminal fails to execute the LTM and the moment when the first information is sent to the network device;

[0111] Refer to the configuration information;

[0112] Configuration information of LTM candidate cells;

[0113] The candidate cell executes the configuration information.

[0114] In some embodiments, the information related to the LTM recovery failure includes at least one of the following:

[0115] LTM restores the identification information of the cell;

[0116] The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell;

[0117] The TA value of the LTM recovery cell determined by the terminal;

[0118] Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process;

[0119] The fifth indication information is used to indicate whether the terminal has restored downlink synchronization of the cell with the LTM;

[0120] LTM restores the CG configuration information of the cell;

[0121] Refer to the configuration information;

[0122] LTM restores the cell configuration information;

[0123] Identification information of the cell where the radio link failure occurs.

[0124] In some embodiments, the information related to the time when the failure occurred includes at least one of the following:

[0125] The time between the time the terminal receives the LTM configuration information and the time when RLF occurs;

[0126] The time between the moment the terminal receives the LTM configuration information and the moment the traditional cell change fails;

[0127] The time between the moment when the terminal receives the LTM configuration information and the moment when the first information is sent to the network device;

[0128] The time between the time when the RLF occurs in the terminal and the time when the first information is sent to the network device;

[0129] The time between the moment when the terminal fails to change the traditional cell and the moment when the first information is sent to the network device.

[0130] In some embodiments, the LTM cell change information includes at least one of the following:

[0131] TCI status identification information;

[0132] Target configuration identification information;

[0133] TA value of the target cell;

[0134] Non-contention random access CFRA resource information.

[0135] In some embodiments, the first information is recorded in one report, and / or the first information is recorded in different reports, and the different reports are associated with each other.

[0136] In some embodiments, different reports are linked by at least one of the following:

[0137] Parameters in different reports;

[0138] Instructions in the report;

[0139] Timestamp;

[0140] Terminal identification information.

[0141] In some embodiments, before receiving the first information sent by the terminal, the method further includes:

[0142] Send a request message to the terminal.

[0143] In some embodiments, before sending the request message to the terminal, the method further includes:

[0144] The sixth indication information sent by the receiving terminal is used to indicate that the terminal stores the first information.

[0145] In some embodiments, the method further comprises:

[0146] Perform LTM mobility optimization according to the first information; and / or send the first information to the first node, where the first information is used by the first node to perform LTM mobility optimization according to the first information.

[0147] An embodiment of the present disclosure provides a terminal, including: a memory, a transceiver, and a processor:

[0148] A memory for storing a computer program; a transceiver for receiving and sending data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0149] In a case where layer 1 and / or layer 2 triggered mobility LTM configuration information is configured, if a failure occurs, first information is recorded, where the first information is LTM-related failure information;

[0150] The first information is sent to the network device.

[0151] In some embodiments, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0152] When the terminal is configured with the mobility LTM configuration information triggered by layer 1 and / or layer 2, if a single failure occurs, recording the first information;

[0153] When the terminal is configured with the mobility LTM configuration information triggered by layer 1 and / or layer 2, if continuous failures occur, the terminal records the first information, where the continuous failures include at least two failures.

[0154] In some embodiments, the single failure includes one of the following:

[0155] Failed to execute LTM;

[0156] A radio link failure (RLF) occurs in the source cell;

[0157] Failed to perform a traditional cell change.

[0158] In some embodiments, the consecutive failures include one of the following:

[0159] The LTM execution fails, and the LTM recovery fails;

[0160] RLF occurs in the source cell and LTM recovery fails;

[0161] The traditional cell change fails and the recovery via LTM fails;

[0162] If LTM fails and LTM recovery succeeds, RLF occurs within the first time of accessing the target cell.

[0163] An RLF occurs in the source cell, is successfully recovered through LTM, and an RLF occurs within the second time of accessing the target cell;

[0164] The traditional cell change fails, but LTM recovery succeeds, and RLF occurs within the third time of accessing the target cell.

[0165] In some embodiments, the first information includes at least one of the following:

[0166] Information about the failure to execute LTM;

[0167] Information about LTM recovery failures;

[0168] Information about the time when the failure occurred;

[0169] Indicates whether subsequent LTMs are supported.

[0170] In some embodiments, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0171] The first indication information is used to indicate the LTM execution type;

[0172] LTM cell change information;

[0173] Identification information of LTM candidate cells;

[0174] Layer 1 measurement result information of LTM candidate cells;

[0175] Layer 1 measurement configuration information of LTM candidate cells;

[0176] Information about the status of the transmission configuration indication TCI activated in advance;

[0177] The second indication information is used to indicate whether the execution mode of LTM is a random access channel RACH or non-RACH;

[0178] Timing Advance (TA) value of the target cell determined by the terminal;

[0179] Configuration authorization CG configuration information of the target cell;

[0180] The value of the LTM timer;

[0181] The time between the time the terminal receives the LTM configuration information and the time the LTM execution fails;

[0182] The time between the moment when the terminal fails to execute the LTM and the moment when the first information is sent to the network device;

[0183] Refer to the configuration information;

[0184] Configuration information of LTM candidate cells;

[0185] The candidate cell executes the configuration information.

[0186] In some embodiments, the information related to the LTM recovery failure includes at least one of the following:

[0187] LTM restores the identification information of the cell;

[0188] The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell;

[0189] The TA value of the LTM recovery cell determined by the terminal;

[0190] Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process;

[0191] The fifth indication information is used to indicate whether the terminal has restored downlink synchronization of the cell with the LTM;

[0192] LTM restores the CG configuration information of the cell;

[0193] Refer to the configuration information;

[0194] LTM restores the cell configuration information;

[0195] Identification information of the cell where the radio link failure occurs.

[0196] In some embodiments, the information related to the time when the failure occurred includes at least one of the following:

[0197] The time between the time the terminal receives the LTM configuration information and the time when RLF occurs;

[0198] The time between the moment the terminal receives the LTM configuration information and the moment the traditional cell change fails;

[0199] The time between the moment when the terminal receives the LTM configuration information and the moment when the first information is sent to the network device;

[0200] The time between the time when the RLF occurs in the terminal and the time when the first information is sent to the network device;

[0201] The time between the moment when the terminal fails to change the traditional cell and the moment when the first information is sent to the network device.

[0202] In some embodiments, the LTM cell change information includes at least one of the following:

[0203] TCI status identification information;

[0204] Target configuration identification information;

[0205] TA value of the target cell;

[0206] Non-contention random access CFRA resource information.

[0207] In some embodiments, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0208] recording the first information in a report;

[0209] The first information is recorded in different reports, and association relationships are established between different reports.

[0210] In some embodiments, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0211] Establish associations between different reports through parameters in different reports;

[0212] Setting indication information in the report, and establishing association relationships between different reports through the indication information;

[0213] Establish associations between different reports through timestamps;

[0214] The association relationship between different reports is established through the terminal identification information.

[0215] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0216] Receive a request message sent by a network device;

[0217] The sending the first information to the network device includes:

[0218] The first information is sent to the network device according to the request message.

[0219] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0220] Send sixth indication information to the network device, where the sixth indication information is used to indicate that the terminal stores the first information.

[0221] An embodiment of the present disclosure provides a network device, including: a memory, a transceiver, and a processor:

[0222] A memory for storing a computer program; a transceiver for receiving and sending data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0223] The first information sent by the receiving terminal is recorded when the terminal is configured with LTM configuration information and a failure occurs; the first information is LTM-related failure information.

[0224] In some embodiments, the failure comprises a single failure and / or consecutive failures, wherein the consecutive failures comprise at least two failures.

[0225] In some embodiments, the single failure includes one of the following:

[0226] Failed to execute LTM;

[0227] RLF occurs in the source cell;

[0228] Failed to execute traditional cell change

[0229] In some embodiments, the consecutive failures include one of the following:

[0230] The LTM execution fails, and the LTM recovery fails;

[0231] RLF occurs in the source cell and LTM recovery fails;

[0232] The traditional cell change fails and the recovery via LTM fails;

[0233] If LTM fails and LTM recovery succeeds, RLF occurs within the first time of accessing the target cell.

[0234] An RLF occurs in the source cell, is successfully recovered through LTM, and an RLF occurs within the second time of accessing the target cell;

[0235] The traditional cell change fails, but LTM recovery succeeds, and RLF occurs within the third time of accessing the target cell.

[0236] In some embodiments, the first information includes at least one of the following:

[0237] Information about the failure to execute LTM;

[0238] Information about LTM recovery failures;

[0239] Information about the time when the failure occurred;

[0240] Indicates whether subsequent LTMs are supported.

[0241] In some embodiments, the information related to the failure to execute the LTM includes at least one of the following:

[0242] The first indication information is used to indicate the LTM execution type;

[0243] LTM cell change information;

[0244] Identification information of LTM candidate cells;

[0245] Layer 1 measurement result information of LTM candidate cells;

[0246] Layer 1 measurement configuration information of LTM candidate cells;

[0247] Information about the status of the transmission configuration indication TCI activated in advance;

[0248] The second indication information is used to indicate whether the execution mode of LTM is a random access channel RACH or non-RACH;

[0249] The TA value of the target cell determined by the terminal;

[0250] Configuration authorization CG configuration information of the target cell;

[0251] The value of the LTM timer;

[0252] The time between the time the terminal receives the LTM configuration information and the time the LTM execution fails;

[0253] The time between the moment when the terminal fails to execute the LTM and the moment when the first information is sent to the network device;

[0254] Refer to the configuration information;

[0255] Configuration information of LTM candidate cells;

[0256] The candidate cell executes the configuration information.

[0257] In some embodiments, the information related to the LTM recovery failure includes at least one of the following:

[0258] LTM restores the identification information of the cell;

[0259] The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell;

[0260] The TA value of the LTM recovery cell determined by the terminal;

[0261] Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process;

[0262] The fifth indication information is used to indicate whether the terminal has restored downlink synchronization of the cell with the LTM;

[0263] LTM restores the CG configuration information of the cell;

[0264] Refer to the configuration information;

[0265] LTM restores the cell configuration information;

[0266] Identification information of the cell where the radio link failure occurs.

[0267] In some embodiments, the information related to the time when the failure occurred includes at least one of the following:

[0268] The time between the time the terminal receives the LTM configuration information and the time when RLF occurs;

[0269] The time between the moment the terminal receives the LTM configuration information and the moment the traditional cell change fails;

[0270] The time between the moment when the terminal receives the LTM configuration information and the moment when the first information is sent to the network device;

[0271] The time between the time when the RLF occurs in the terminal and the time when the first information is sent to the network device;

[0272] The time between the moment when the terminal fails to change the traditional cell and the moment when the first information is sent to the network device.

[0273] In some embodiments, the LTM cell change information includes at least one of the following:

[0274] TCI status identification information;

[0275] Target configuration identification information;

[0276] TA value of the target cell;

[0277] Non-contention random access CFRA resource information.

[0278] In some embodiments, the first information is recorded in one report, and / or the first information is recorded in different reports, and the different reports are associated with each other.

[0279] In some embodiments, different reports are linked by at least one of the following:

[0280] Parameters in different reports;

[0281] Instructions in the report;

[0282] Timestamp;

[0283] Terminal identification information.

[0284] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0285] Send a request message to the terminal.

[0286] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0287] The sixth indication information sent by the receiving terminal is used to indicate that the terminal stores the first information.

[0288] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0289] Perform LTM mobility optimization according to the first information; and / or send the first information to the first node, where the first information is used by the first node to perform LTM mobility optimization according to the first information.

[0290] An embodiment of the present disclosure provides a mobility failure processing device, including:

[0291] a recording unit, configured to, when configured with layer 1 and / or layer 2 triggered mobility LTM configuration information, record first information if a failure occurs, the first information being LTM-related failure information;

[0292] The first sending unit is configured to send the first information to the network device.

[0293] An embodiment of the present disclosure provides a mobility failure processing device, including:

[0294] The first receiving unit is configured to receive first information sent by a terminal, where the first information is recorded when the terminal is configured with LTM configuration information and a failure occurs; the first information is LTM-related failure information.

[0295] An embodiment of the present disclosure provides a processor-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the above-mentioned mobility failure processing method are implemented.

[0296] The beneficial effects of the above technical solution disclosed in the present invention are:

[0297] In an embodiment of the present disclosure, when a terminal is configured with LTM configuration information and a terminal failure occurs, LTM-related failure information is recorded and reported to a network device, so that the network device or other related nodes perform mobility optimization. BRIEF DESCRIPTION OF THE DRAWINGS

[0298] FIG1 shows a flow chart of a method for handling mobility failure according to an embodiment of the present disclosure;

[0299] FIG2 shows a second flow chart of a method for handling mobility failure according to an embodiment of the present disclosure;

[0300] FIG3 shows a schematic diagram of the structure of a mobility failure processing device according to an embodiment of the present disclosure;

[0301] FIG4 shows a second structural diagram of the mobility failure processing device according to an embodiment of the present disclosure;

[0302] FIG5 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure;

[0303] FIG6 is a schematic diagram showing the structure of a network device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0304] To make the technical problems, technical solutions, and advantages to be solved by the present disclosure more clear, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help fully understand the embodiments of the present disclosure. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. In addition, for the sake of clarity and brevity, descriptions of known functions and configurations have been omitted.

[0305] It should be understood that references throughout this specification to "one embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic associated with the embodiment is included in at least one embodiment of the present disclosure. Therefore, the appearances of "in one embodiment" or "in an embodiment" throughout this specification do not necessarily refer to the same embodiment. Furthermore, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0306] In the various embodiments of the present disclosure, it should be understood that the size of the serial numbers of the following processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present disclosure.

[0307] In the embodiments of the present disclosure, the term "and / or" describes the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0308] In the embodiments of the present disclosure, the term "plurality" refers to two or more than two, and other quantifiers are similar thereto.

[0309] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure and not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0310] The network device sends an LTM cell switch command to the UE based on the L1 measurement results reported by the UE. When the UE receives the LTM cell switch command sent by the network device, the UE will execute an LTM cell change. If the UE fails to execute the MCG LTM cell change, the UE will execute a cell selection process. If the target cell selected by the UE cell selection is an LTM candidate cell, the UE will execute LTM recovery. When the target cell selected by the UE cell selection is not an LTM candidate cell, the UE triggers a reconstruction process. If the target cell selected by the UE cell selection is an LTM candidate cell, when the UE fails to execute LTM recovery, the UE will trigger a reconstruction process. For the situation where the UE has an LTM mobility failure, there is currently no optimization method. The embodiments of the present disclosure provide a mobility failure processing method, apparatus, terminal and network device for optimizing the problem of LTM mobility failure in the terminal.

[0311] Among them, the method and the device are based on the same application concept. Since the principles of solving problems by the method and the device are similar, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0312] As shown in FIG1 , an embodiment of the present disclosure provides a method for handling mobility failure, which is applied to a terminal and specifically includes the following steps:

[0313] Step 101: When a terminal is configured with layer 1 and / or layer 2 triggered mobility LTM configuration information, if a failure occurs, the terminal records first information, where the first information is LTM-related failure information.

[0314] Step 102: The terminal sends the first information to a network device.

[0315] In this embodiment, the network device configures LTM configuration information for the terminal. If a failure occurs in the terminal, the LTM-related failure information is recorded and reported to the network device. The network device can then perform LTM mobility optimization based on the LTM-related failure information, or the network device can send the LTM-related failure information to other relevant nodes for LTM mobility optimization. In some embodiments, the terminal failure can be an LTM execution failure or other failure conditions.

[0316] In some embodiments, the LTM may be an LTM on a Master Cell Group (MCG) side or an LTM on a Secondary Cell Group (SCG) side.

[0317] In an embodiment of the present disclosure, when a terminal is configured with LTM configuration information and a terminal failure occurs, LTM-related failure information is recorded and reported to a network device, so that the network device or other related nodes perform mobility optimization.

[0318] As an optional embodiment, when the mobility LTM configuration information triggered by layer 1 and / or layer 2 is configured, if a failure occurs, recording the first information includes at least one of the following:

[0319] (1) When a terminal is configured with the mobility LTM configuration information triggered by layer 1 and / or layer 2, if a single failure occurs, the terminal records the first information;

[0320] (2) When the terminal is configured with the mobility LTM configuration information triggered by layer 1 and / or layer 2, if continuous failures occur, the terminal records the first information, where the continuous failures include at least two failures.

[0321] In this embodiment, the terminal may record LTM-related failure information in the event of a single failure, or in the event of consecutive failures. For example, the terminal may record failure information and report it to the network device when the first failure occurs, and / or may record failure information and report it to the network device when two or more consecutive failures occur.

[0322] In some embodiments, the single failure includes one of the following:

[0323] 11) LTM execution failure; for example: the terminal fails to execute LTM, but LTM is successfully restored or rebuilt. The terminal only experiences one LTM execution failure, and the terminal records and reports LTM-related failure information.

[0324] 12) Radio link failure (RLF) occurs in the source cell; for example, if a terminal experiences RLF in the source cell but LTM recovers or reestablishes successfully, the terminal only experiences one RLF failure. The terminal may record and report LTM-related failure information.

[0325] 13) Failure to perform a legacy handover (legacy HO). For example, if a terminal fails to perform a legacy HO but LTM recovery or reestablishment succeeds, and the terminal experiences only one legacy HO failure, the terminal records and reports LTM-related failure information. Legacy cell changes include legacy L3 handovers and legacy Primary SCG Cell (PSCell) changes.

[0326] The above LTM recovery is successful when the target cell selected by the UE during the cell selection process is a candidate cell among the LTM candidate cells. The UE directly executes the configuration information of the candidate cell for recovery, and the recovery is successful.

[0327] The candidate cell execution configuration information is the candidate cell configuration information executed by the UE when executing LTM, and the candidate cell execution configuration information may be the configuration information of the LTM candidate cell (when the configuration information of the LTM candidate cell is a complete configuration), or the candidate cell execution configuration information is the reference configuration information + the configuration information of the LTM candidate cell (when the configuration information of the LTM candidate cell is a delta configuration based on the reference configuration information).

[0328] In some embodiments, the consecutive failures include one of the following:

[0329] 21) LTM execution fails and LTM recovery fails;

[0330] In this embodiment, the failure to recover through LTM means that after the terminal fails to execute LTM, the terminal selects a cell, and the cell selected is a candidate cell among the LTM candidate cells. The terminal directly executes the configuration information of this candidate cell for recovery, and if the recovery fails, the terminal can record the first information.

[0331] 22) RLF occurs in the source cell and recovery through LTM fails;

[0332] In this embodiment, the failure to recover through LTM indicates that: after RLF occurs in the source cell, the terminal performs cell selection, the selected cell is a candidate cell among the LTM candidate cells, the terminal executes the configuration information of the candidate cell for recovery, and the recovery fails. In this case, the terminal can record the first information.

[0333] 23) The legacy cell change (legacy HO) fails, and recovery via LTM fails.

[0334] In this embodiment, the failure to recover through LTM indicates that: after the legacy HO fails, the terminal performs cell selection, the selected cell is a candidate cell among the LTM candidate cells, the terminal executes the configuration information of the candidate cell for recovery, and the recovery fails. In this case, the terminal can record the first information.

[0335] 24) Failure in executing LTM, successful recovery through LTM, and RLF occurs within the first time of accessing the target cell;

[0336] The first time is a short time and can be a preset value. If the terminal fails to execute LTM and successfully recovers through LTM, but RLF soon occurs in the target cell, the first information can be recorded. The successful LTM recovery means that the target cell selected by the UE during the cell selection process is a candidate cell among the LTM candidate cells, and the UE directly executes the configuration information of this candidate cell for recovery, and the recovery is successful.

[0337] 25) RLF occurs in the source cell, is successfully recovered through LTM, and RLF occurs within the second time of accessing the target cell;

[0338] The second time period is a shorter time period and may be a preset value. The second time period may be the same as or different from the first time period, and is not limited here. If the terminal successfully recovers through LTM after an RLF occurs in the source cell, but an RLF occurs in the target cell soon after, the terminal may record the first information.

[0339] The successful recovery through LTM means that the target cell selected by the UE during the cell selection process is a candidate cell among the LTM candidate cells, and the UE directly executes the configuration information of the candidate cell for recovery, and the recovery is successful.

[0340] 26) The traditional cell change fails, but is successfully recovered through LTM, and RLF occurs within the third time of accessing the target cell.

[0341] The third time is a shorter time and can be a preset value. The third time can be the same as or different from the first time and / or the second time, which is not limited here. After the terminal executes legacy HO, it successfully recovers through LTM, but RLF occurs soon in the target cell, then the first information can be recorded. The successful recovery through LTM means that the target cell selected by the UE when executing the cell selection process is a candidate cell among the LTM candidate cells, and the UE directly executes the configuration information of this candidate cell for recovery, and the recovery is successful.

[0342] As an optional embodiment, the first information includes at least one of the following:

[0343] (1) Information related to the failure to execute LTM;

[0344] In some embodiments, the information related to the failure to execute the LTM includes at least one of the following:

[0345] 11) First indication information, used to indicate the LTM execution type; the first indication information may indicate that the execution type is "LTM".

[0346] 12) LTM cell switch information; in some embodiments, the LTM cell switch information includes at least one of the following: TCI state identification information; target configuration identification information; TA value of the target cell; non-contention random access CFRA resource information.

[0347] In some embodiments, the TCI state may include uplink and / or downlink TCI state.

[0348] In some embodiments, the CFRA resource information includes at least one of the following: a random access preamble index, a synchronization signal (SS) / physical broadcast channel (PBCH) index, an uplink carrier (such as a supplementary uplink (SUL) or a normal uplink (NUL)), and a PRACH mask index.

[0349] 13) Identification information of the LTM candidate cell; it can be the physical cell identifier (PCI) + frequency information, or the cell global identifier (CGI).

[0350] 14) Layer 1 measurement result information of the LTM candidate cell; which may be Layer 1 reference signal received power (L1-RSRP) information, etc.

[0351] 15) Layer 1 measurement configuration information of the LTM candidate cell; this may be information such as the synchronization signal block (SSB) frequency, subcarrier spacing, and SSB period;

[0352] 16) Information about the pre-activated transmission configuration indication (TCI) state (state(s)); the TCI state may include uplink and / or downlink TCI states. The pre-activated TCI state is a TCI state activated by the terminal based on a command from a network device (e.g., a MAC CE) before receiving an LTM command, or an activated TCI state sent by a network device via a MAC CE before the terminal receives the LTM command.

[0353] 17) Second indication information is used to indicate whether the execution mode of LTM is random access channel RACH or non-RACH (RACH-less); the second indication information is used to indicate whether LTM is executed in RACH mode or RACH-less mode.

[0354] 18) The timing advance (TA) value of the target cell determined by the terminal; for example, the TA value of the LTM target cell calculated by the terminal or the TA value sent by the network device received by the terminal;

[0355] 19) Configuration authorization CG configuration information of the target cell; the CG configuration information may be configured by the network device for the target cell, and this CG configuration information is used by the UE to send UL data when accessing the target cell in RACH-less mode;

[0356] 110) The value of the LTM timer; for example, the T304 value.

[0357] 111) The time between the moment the terminal receives the LTM configuration information and the moment the LTM execution fails; the time unit can be milliseconds, seconds, minutes, hours, etc., which is not limited here.

[0358] 112) The time between the moment when the terminal fails to execute LTM and the moment when the first information is sent to the network device; the time unit can be milliseconds, seconds, minutes, hours, etc., which is not limited here.

[0359] 113) Reference configuration information: This reference configuration information is sent by the network device to the UE. It is common configuration information for all incompletely configured LTM candidate cells. The UE applies the configuration information of the LTM candidate cells based on the reference configuration information to generate a complete configuration.

[0360] 114) Configuration information of the LTM candidate cell. Each candidate cell is associated with an LTM candidate cell configuration information. The configuration information of a candidate cell can be a complete configuration or a delta configuration based on a reference configuration.

[0361] 115) Candidate cell execution configuration information.

[0362] The candidate cell execution configuration information is the candidate cell configuration information executed by the UE when executing LTM. The candidate cell execution configuration information may be the configuration information of the LTM candidate cell (when the configuration information of the LTM candidate cell is a complete configuration), or the candidate cell execution configuration information is the reference configuration information + the configuration information of the LTM candidate cell (when the configuration information of the LTM candidate cell is a delta configuration based on the reference configuration information).

[0363] (2) Related information of LTM recovery failure; the LTM recovery failure may include: failure to recover through LTM, and / or success in recovering through LTM but RLF occurring soon in the target cell.

[0364] In some embodiments, the information related to the LTM recovery failure includes at least one of the following:

[0365] LTM recovers the cell identification information, which can be the physical cell identifier (PCI) + frequency, or CGI.

[0366] The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell; the relevant information of the LTM recovery failure may include indication information of whether the UE has obtained the TA value of the LTM recovery cell, and this acquisition method may be the TA value of the LTM recovery cell calculated by the UE or the TA value of the LTM recovery cell received by the UE from the network device;

[0367] The TA value of the LTM recovery cell determined by the terminal; this may be the TA value of the LTM recovery cell calculated by the UE or the TA value of the LTM recovery cell received by the UE from the network device;

[0368] Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH (RACH-less) process;

[0369] Fifth indication information, used to indicate whether the terminal is synchronized with the LTM recovery cell downlink; the relevant information of the LTM recovery failure may include indication information of whether the UE has been synchronized with the LTM recovery cell downlink;

[0370] CG configuration information of the LTM recovery cell; the CG configuration information may be pre-configured by the network device for the LTM recovery cell. This CG configuration information is used by the UE to send UL data when accessing the recovery cell in RACH-less mode;

[0371] Refer to the configuration information;

[0372] Configuration information of the LTM recovery cell; the configuration information of the LTM recovery cell is the configuration information of the LTM candidate cell of this LTM recovery cell configured by the network for the UE, which can be complete configuration information or delta configuration information based on the reference configuration.

[0373] The identification information of the cell where the radio link failure occurs may be for a case where the terminal successfully recovers through LTM but RLF soon occurs in the target cell. The terminal may record the identification information of the cell where the radio link failure occurs.

[0374] (3) Information related to the time when the failure occurred;

[0375] In some embodiments, the information related to the time when the failure occurred includes at least one of the following:

[0376] The time between the time the terminal receives the LTM configuration information and the time when RLF occurs;

[0377] The time between the moment the terminal receives the LTM configuration information and the moment the legacy cell change (legacy HO) fails;

[0378] The time between the moment when the terminal receives the LTM configuration information and the moment when the first information is sent to the network device;

[0379] The time between the time when the RLF occurs in the terminal and the time when the first information is sent to the network device;

[0380] The time between the time when the terminal fails to change the traditional cell and the time when the first information is sent to the network device. The above time unit can be milliseconds, seconds, minutes, hours, etc., which is not limited here.

[0381] (4) Indication information indicating whether the UE supports subsequent LTM. This indication information is used to indicate whether the UE will perform subsequent LTM. Subsequent LTM means that after the UE performs an LTM cell switch, the UE does not release the LTM configuration information (that is, the UE does not release all LTM-related configuration information) and continues to perform subsequent LTM cell switches.

[0382] As an optional embodiment, the recording of the first information includes at least one of the following:

[0383] recording the first information in a report;

[0384] The first information is recorded in different reports, and association relationships are established between different reports.

[0385] In this embodiment, the terminal recording the first information may be recording multiple failure-related information in the first information in one report, or recording multiple failure-related information in the first information in different reports and establishing associations. For a single failure, the terminal records the first information in one report.

[0386] The terminal records the first information in a report, and the report may be in one or more forms such as an RLF report, other existing reports, and newly introduced reports. The other existing reports include, for example, a connection establishment failure (CEF) report, a random access report (RACH report), and a successful handover report (SHR).

[0387] In some embodiments, establishing associations between different reports includes at least one of the following:

[0388] Establish associations between different reports through parameters in different reports. For example, two reports can include the same parameter. If the parameter value is the same, the two reports are related. If the parameter value is different, the two reports are unrelated.

[0389] Setting indication information in the report, and establishing association relationships between different reports through the indication information, for example: adding an indication information to report A to indicate that this report A has a related report B, and / or adding an indication information to report B to indicate that this report B has a related report A;

[0390] Establish associations between different reports through timestamps. That is, introduce timestamp information into multiple reports. If the timestamp information in multiple reports is the same or similar, they are related reports.

[0391] The association relationship between different reports is established through the identification information of the terminal, for example: the association is through the Cell Radio Network Temporary Identifier (C-RNTI), C-RNTI is introduced in Report A, and C-RNTI is also introduced in Report B. These two C-RNTIs are both C-RNTIs for UEs in the same cell (such as both are C-RNTIs of UEs in the source cell or both are C-RNTIs of UEs in the target cell). Therefore, when the C-RNTI in Report A and the C-RNTI in Report B are the same, Report A and Report B are associated reports. If they are different, Report A and Report B are unrelated reports.

[0392] In this embodiment, the terminal records multiple failure-related information in the first information in different reports and associates them, where the association method can be one or more of the above: association with parameters in multiple reports; association by introducing indication information in the report; association with timestamps; association with terminal identification information.

[0393] As an optional embodiment, the method further includes:

[0394] Receive a request message sent by a network device;

[0395] The sending the first information to the network device includes:

[0396] The first information is sent to the network device according to the request message.

[0397] In some embodiments, before receiving the request message sent by the network device, the method further includes:

[0398] Send sixth indication information to the network device, where the sixth indication information is used to indicate that the terminal stores the first information.

[0399] In this embodiment, the terminal reporting the first information may be: the terminal directly reports the first information to the network device; or, the network device sends a request message to the terminal to request the first information, and the terminal reports the first information based on the situation of the network device; or, after recording the first information, the terminal sends an available indication information to the network device to notify the network device that the terminal has stored the LTM-related failure information, and the network device can then request the first information from the terminal based on the indication information, and the terminal reports the first information based on the request of the network device.

[0400] After receiving the first information, the network device may perform LTM mobility optimization or forward the information to a related node through interface signaling for LTM mobility optimization, where the interface signaling may be Xn, X2, E1, or F1 interface signaling.

[0401] The following example illustrates the implementation process of the mobility failure processing method.

[0402] Specifically, they include:

[0403] Step (1): UE experiences continuous failures.

[0404] When the UE is configured with LTM configuration information and executes LTM, scenarios in which the terminal fails to send messages continuously may include one or more of the following scenarios:

[0405] Scenario 1: The UE fails to execute LTM and fails to recover from LTM.

[0406] Scenario 2: The UE experiences RLF in the source cell and LTM recovery fails.

[0407] Scenario 3: The UE fails to perform legacy HO and fails to perform LTM recovery.

[0408] Scenario 4: The UE fails LTM and succeeds through LTM recovery, but soon experiences RLF in the target cell.

[0409] Scenario 5: The UE experiences RLF in the source cell and succeeds through LTM recovery, but soon experiences RLF in the target cell.

[0410] Scenario 6: The UE fails in legacy HO and succeeds through LTM recovery, but soon experiences RLF in the target cell.

[0411] In addition, continuous LTM failures can also occur in the following scenarios:

[0412] Scenario 7: The UE fails LTM, succeeds LTM recovery, and then experiences RLF in the target cell after a period of time.

[0413] Scenario 8: The UE experiences RLF in the source cell, succeeds through LTM recovery, and then experiences RLF in the target cell some time later.

[0414] Scenario 9: The UE fails to perform legacy HO, succeeds through LTM recovery, and then experiences RLF in the target cell after a period of time.

[0415] Step (2): The UE records the first information.

[0416] When a UE encounters any of the consecutive failure scenarios in step (1) above, the UE shall record one or more of the following LTM-related failure information:

[0417] a) Information related to the failure of the first LTM execution;

[0418] b) Information related to the second LTM recovery failure;

[0419] c) Information related to the third LTM recovery failure;

[0420] d) Fourth other LTM failure related information.

[0421] The information related to the failure of the first LTM execution mentioned above may include one or more of the following information:

[0422] a1: LTM execution type indication information, that is, the type is "LTM";

[0423] The LTM execution type indication information may be 1-bit indication information, indicating that the most recently executed handover type is "LTM".

[0424] a2: information in LTM cell switch (one or more);

[0425] The information in the LTM cell switch includes TCI state identification information, target configuration identification information, target cell TA value, and CFRA resource information. The target cell TA value is the TA value for the target cell obtained through a physical downlink control channel (PDCCH) order. The CFRA resource information includes the RACH dedicated configuration information required for the UE to access the target cell. The target configuration identification information indicates which target cell the UE will switch to or which target configuration the UE will apply. The TCI state identification information can be understood as indicating the beam to be applied after the UE switches to the target cell.

[0426] a3: Identification information of each LTM candidate cell.

[0427] The identification information of each candidate LTM cell can be physical cell ID (PCI) + frequency information, or CGI.

[0428] The identification information of each candidate cell in this LTM can be reported in the following ways:

[0429] Method 1: Candidate cell identification information list, that is, all candidate cell identification information is put into a list, and each entry in this list is the identification information of a candidate cell;

[0430] Method 2: Indication information in L3 neighbor measurement, that is, in the neighbor measurement result report, for each neighbor, add an indication information to indicate whether this neighbor is an LTM candidate cell; in addition, for LTM candidate cells that are not in the L3 neighbor measurement, record them in the same way as method 1, that is, record them in list form;

[0431] Method 3: Obtain candidate cell identification information through L1 measurement result reporting or L1 measurement configuration information.

[0432] a4: L1 measurement result information of each candidate LTM cell. The L1 measurement result information of each candidate LTM cell may be L1 reference signal received power (Layer 1 reference signal received power, L1-RSRP) information, etc.

[0433] a5: Layer 1 measurement configuration information of the LTM candidate cell.

[0434] The configured layer 1 measurement configuration information of each LTM candidate cell may be information such as the configured SSB frequency, subcarrier spacing, and SSB period.

[0435] a6: Information about the TCI state(s) activated in advance.

[0436] The information of the pre-activated TCI state(s) is the pre-activated TCI state(s) information sent by the network device through a Medium Access Control (MAC) control element (CE).

[0437] a7: Whether the LTM execution mode is RACH mode or RACH-less mode, which can indicate whether the access mode of the most recent LTM execution is RACH mode or RACH-less mode;

[0438] a8: Timing Advance (TA) value of the target cell determined by the UE. This can be the TA value of the target cell calculated by the UE itself.

[0439] a9: CG configuration information of the target cell. This can be the uplink resource / configuration authorization configured by the network device for the target cell and used by the UE to send the first UL data after accessing the target cell.

[0440] a10: LTM timer value (such as T304 value).

[0441] a11: The time from when the UE receives the LTM configuration information to when the LTM execution fails.

[0442] a12: The time from the UE failing to execute LTM to reporting the first information.

[0443] a13: Refer to the configuration information.

[0444] The reference configuration information is the reference configuration configured by the network device for the UE. That is, when the UE generates the target cell configuration, it needs to combine the candidate target cell configuration and the reference configuration to generate a complete target cell configuration. That is, the candidate target cell configuration is a delta configuration based on the reference configuration.

[0445] a14: Configuration information of LTM candidate cells.

[0446] a15: candidate cell execution configuration information.

[0447] In this embodiment, the information related to the LTM execution failure may be information that needs to be recorded and reported for the first LTM execution failure. The information related to the first LTM execution failure may be recorded and reported for the first failure in scenarios 7 to 9 in step (1), or recorded and reported for a single LTM execution failure. For example, if the LTM execution fails but LTM recovery succeeds and there is no subsequent failure in the target cell, the above information may be recorded and reported.

[0448] Regarding the above b) information related to the second LTM recovery failure, it may include one or more of the following information (mainly for information that needs to be recorded and reported during the LTM recovery process):

[0449] b1: LTM recovery cell identification information;

[0450] The LTM recovery cell identification information can be the physical cell ID (PCI) + frequency, or CGI. If the UE supports recording LTM related information in the RLF report, the LTM recovery cell identifier (such as LTMCellId) recorded in the RLF report is the global cell identification information (CGI) of the selected cell (if any), otherwise it is recorded as the physical cell ID (PCI) and frequency.

[0451] b2: Indication information of whether the UE has obtained the TA value of the LTM recovery cell. This indication information indicates whether the UE has obtained the TA value of the LTM recovery cell, that is, whether the UE has calculated the TA value of the LTM recovery cell by itself.

[0452] b3: TA value of the LTM recovery cell determined by the UE. This can be the TA value of the LTM recovery cell calculated by the UE itself or the TA value of the LTM recovery cell received by the UE from the network device.

[0453] b4: Indication information of whether the LTM recovery process is a RACH process or a RACH-less process. It can indicate whether the UE accesses the LTM recovery cell in RACH mode or RACH-less mode during the LTM recovery process.

[0454] b5: Indication information of whether the UE has been synchronized with the LTM recovery cell downlink; indicates whether the UE has been synchronized with the LTM recovery cell downlink when accessing the LTM recovery cell.

[0455] b6: CG configuration of LTM recovery cell;

[0456] It can be the CG configuration pre-configured by the network device for the LTM recovery cell, or the uplink resource / configuration authorization configured by the network device for the UE to send the first UL data when accessing the LTM recovery cell.

[0457] b7: reference configuration information; same as the reference configuration information in the information related to the first LTM execution failure, which will not be repeated here.

[0458] b8: configuration information of the LTM recovery cell; refers to the configuration information of the LTM recovery cell pre-configured by the network device (configuration information of a candidate cell among the candidate cells).

[0459] The third LTM recovery failure related information mentioned in c) may include one or more of the following information (mainly for information that needs to be recorded and reported when RLF occurs in the target cell shortly after successful LTM recovery):

[0460] c1: information related to the second LTM recovery failure;

[0461] c2: failed cell identification information; refers to the identification information of the failed target cell in which RLF occurs within a short period of time after the UE successfully performs LTM recovery. It can be PCI+frequency or CGI.

[0462] The fourth other LTM failure related information mentioned above (d) may include one or more of the following information (information that needs to be recorded and reported in addition to the above three types of information):

[0463] d1: The time from receiving the LTM configuration to the occurrence of RLF / legacy HO failure;

[0464] d2: the time from receiving the LTM configuration to reporting the first information;

[0465] d3: time from the occurrence of RLF / legacy HO failure to the reporting of the first information;

[0466] d4: Indication information of whether subsequent LTM is supported; this indication information indicates whether the network device configures the UE to execute subsequent LTM.

[0467] In some embodiments, the recording method of the first information may include:

[0468] The first information may be recorded in one or more of the following reports:

[0469] RLF report (report);

[0470] Other existing reports are used; for example, a Connection Establishment Failure (CEF) report, a Random Access Report (RACH) report, a Successful Handover Report (SHR) and the like.

[0471] Introducing new reports.

[0472] When the content of the first information is recorded in two or more reports, they can be associated in one or more of the following ways:

[0473] Method a: Associate with parameters from multiple reports;

[0474] For example, if multiple reports contain the same parameter, they can be associated using the same reference. When a network device receives these reports and finds the same parameter value, it considers them to be related to the same LTM switch. Otherwise, it considers them to be unrelated.

[0475] Method b: Introduce indicator information in the report for association.

[0476] The same indication information can be added to multiple reports of the same LTM switch to indicate that these reports are related to the same LTM execution. Alternatively, indication information can be introduced in some reports to indicate that there are other reports for this LTM switch, or even to indicate that there are several related reports.

[0477] Alternatively, you could also consider assigning a unique number to each report generated by this LTM execution. When submitting a report, you would include the report number and the numbers of the associated reports. Once the network receives the report, it will know which reports are associated with it.

[0478] Method c: Associate by timestamp.

[0479] For example, if the timestamps recorded in multiple reports are the same or the time interval between the timestamps recorded in these reports is very short, it indicates that these reports are related to the same LTM switch; otherwise, it indicates that there is no correlation between these reports.

[0480] Method d: associate with terminal identification information.

[0481] Taking the Cell Radio Network Temporary Identifier (C-RNTI) of the source cell as an example, if the C-RNTI information of the source cell executed by this LTM is stored in multiple reports, then when the network device receives these reports, it can check whether the C-RNTI of the source cell recorded in these reports is the same. If they are the same, it indicates that they are reports related to the same LTM handover. If they are not the same, it indicates that they are not reports related to the same LTM handover, that is, there is no correlation between the reports.

[0482] Step (3): The UE reports the first information.

[0483] When the UE generates the first information, the UE may send an availability indication message to the network in an uplink completion message, notifying the network that the UE side stores the first information. The uplink completion message may be one or more of a radio resource control (RRC) reconfiguration complete message, an RRC connection establishment complete message, an RRC connection recovery complete message, and an RRC connection reestablishment complete message. The indication information may be 1-bit indication information.

[0484] When the network device receives the availability indication information sent by the UE, it sends a request message to the UE, requesting the UE to report the first information; alternatively, the network may also directly send a request message to the UE to request the UE to report the first information without the need for the availability indication information, that is, the UE may not report the availability indication information to the device.

[0485] After the UE receives the request information sent by the network device, the UE reports the first information based on the request of the network device.

[0486] The above-mentioned network device request and UE response may be sent using a UE Information Request / Response message pair.

[0487] Step (4): Network optimization.

[0488] When the network device receives the first information sent by the UE, it can perform mobility optimization based on the first information, or the network device can send this first information to the relevant node through interface signaling, and the relevant node will perform mobility optimization, where the interface signaling can be one or more of Xn, X2, E1, and F1 interface signaling.

[0489] In this embodiment, when a UE has a continuous LTM failure, the UE may record and report information related to the continuous LTM failure to a network device for network optimization.

[0490] In an embodiment of the present disclosure, when a terminal is configured with LTM configuration information and a terminal failure occurs, LTM-related failure information is recorded and reported to a network device, so that the network device or other related nodes perform mobility optimization.

[0491] As shown in FIG2 , an embodiment of the present disclosure further provides a method for handling mobility failure, which is applied to a network device and includes:

[0492] Step 201: A network-side device receives first information sent by a terminal. The first information is recorded when the terminal is configured with LTM configuration information and a failure occurs; the first information is LTM-related failure information.

[0493] In this embodiment, the network device configures LTM configuration information for the terminal. If a failure occurs in the terminal, the LTM-related failure information is recorded and reported to the network device.

[0494] In some embodiments, the method further comprises:

[0495] Perform LTM mobility optimization according to the first information; and / or send the first information to the first node, where the first information is used by the first node to perform LTM mobility optimization according to the first information.

[0496] In this embodiment, the network device may perform LTM mobility optimization based on the LTM-related failure information, or the network device may send the LTM-related failure information to other related nodes for LTM mobility optimization. In some embodiments, the terminal failure may be an LTM execution failure or other failure conditions. The first node is a node related to the first information.

[0497] In some embodiments, the failure comprises a single failure and / or consecutive failures, wherein the consecutive failures comprise at least two failures.

[0498] In this embodiment, the terminal may record LTM-related failure information in the event of a single failure, or in the event of consecutive failures. For example, the terminal may record failure information and report it to the network device when the first failure occurs, and / or may record failure information and report it to the network device when two or more consecutive failures occur.

[0499] In some embodiments, the single failure includes one of the following:

[0500] Failed to execute LTM;

[0501] RLF occurs in the source cell;

[0502] Failed to perform a traditional cell change.

[0503] In some embodiments, the consecutive failures include one of the following:

[0504] The LTM execution fails, and the LTM recovery fails;

[0505] RLF occurs in the source cell and LTM recovery fails;

[0506] The traditional cell change fails and the recovery via LTM fails;

[0507] If LTM fails and LTM recovery succeeds, RLF occurs within the first time of accessing the target cell.

[0508] An RLF occurs in the source cell, is successfully recovered through LTM, and an RLF occurs within the second time of accessing the target cell;

[0509] The traditional cell change fails, but LTM recovery succeeds, and RLF occurs within the third time of accessing the target cell.

[0510] In some embodiments, the first information includes at least one of the following:

[0511] (1) Information related to the failure to execute LTM;

[0512] In some embodiments, the information related to the failure to execute the LTM includes at least one of the following:

[0513] The first indication information is used to indicate the LTM execution type;

[0514] LTM cell change information;

[0515] Identification information of LTM candidate cells;

[0516] Layer 1 measurement result information of LTM candidate cells;

[0517] Layer 1 measurement configuration information of LTM candidate cells;

[0518] Information about the status of the transmission configuration indication TCI activated in advance;

[0519] The second indication information is used to indicate whether the execution mode of LTM is a random access channel RACH or non-RACH;

[0520] The TA value of the target cell determined by the terminal;

[0521] Configuration authorization CG configuration information of the target cell;

[0522] The value of the LTM timer;

[0523] The time between the time the terminal receives the LTM configuration information and the time the LTM execution fails;

[0524] The time between the moment when the terminal fails to execute the LTM and the moment when the first information is sent to the network device;

[0525] Refer to the configuration information;

[0526] Configuration information of LTM candidate cells;

[0527] The candidate cell executes the configuration information.

[0528] (2) Information related to LTM recovery failure.

[0529] In some embodiments, the information related to the LTM recovery failure includes at least one of the following:

[0530] LTM restores the identification information of the cell;

[0531] The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell;

[0532] The TA value of the LTM recovery cell determined by the terminal; it can be the TA value of the LTM recovery cell calculated by the UE or the TA value of the LTM recovery cell received by the UE from the network device.

[0533] Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process;

[0534] The fifth indication information is used to indicate whether the terminal has restored downlink synchronization of the cell with the LTM;

[0535] LTM restores the CG configuration information of the cell;

[0536] Refer to the configuration information;

[0537] LTM restores the cell configuration information;

[0538] Identification information of the cell where the radio link failure occurs.

[0539] (3) Information related to the time when the failure occurred.

[0540] The information related to the time when the failure occurred includes at least one of the following:

[0541] The time between the time the terminal receives the LTM configuration information and the time when RLF occurs;

[0542] The time between the moment the terminal receives the LTM configuration information and the moment the traditional cell change fails;

[0543] The time between the moment when the terminal receives the LTM configuration information and the moment when the first information is sent to the network device;

[0544] The time between the time when the RLF occurs in the terminal and the time when the first information is sent to the network device;

[0545] The time between the moment when the terminal fails to change the traditional cell and the moment when the first information is sent to the network device.

[0546] (4) Whether the subsequent LTM indication information is supported.

[0547] In some embodiments, the LTM cell change information includes at least one of the following:

[0548] TCI status identification information;

[0549] Target configuration identification information;

[0550] TA value of the target cell;

[0551] Non-contention random access CFRA resource information.

[0552] As an optional embodiment, the first information is recorded in one report, and / or the first information is recorded in different reports, and the different reports are associated with each other.

[0553] In this embodiment, the terminal recording the first information may be recording multiple failure-related information in the first information in one report, or recording multiple failure-related information in the first information in different reports and establishing associations. For a single failure, the terminal records the first information in one report.

[0554] The terminal records the first information in a report, and the report may be in one or more forms such as an RLF report, other existing reports, and newly introduced reports. Examples of the other existing reports include a CEF report, a RACH report, and an SHR report.

[0555] In some embodiments, different reports are linked by at least one of the following:

[0556] Parameters in different reports; for example, two reports can include the same parameter. If the parameter value is the same, the reports are related; if the parameter value is different, the reports are unrelated.

[0557] Instruction information in a report; for example, adding an instruction to report A to indicate that report A has a related report B, and / or adding an instruction to report B to indicate that report B has a related report A;

[0558] Timestamp: that is, timestamp information is introduced in multiple reports. If the timestamp information in multiple reports is the same or similar, then they are related reports;

[0559] Terminal identification information. For example, through the Cell Radio Network Temporary Identifier (C-RNTI), the association is introduced in Report A and Report B. These two C-RNTIs are for the UE in the same cell (such as the C-RNTI of the UE in the source cell or the C-RNTI of the UE in the target cell). Therefore, when the C-RNTI in Report A and the C-RNTI in Report B are the same, they are associated reports. If they are different, they are unrelated reports.

[0560] As an optional embodiment, before receiving the first information sent by the terminal, the method further includes: sending a request message to the terminal.

[0561] In some embodiments, before sending the request message to the terminal, the method further includes:

[0562] The sixth indication information sent by the receiving terminal is used to indicate that the terminal stores the first information.

[0563] In this embodiment, the terminal reports the first information in the following ways: the terminal directly reports the first information to the network device; or the network device sends a request message to the terminal to request the first information, and the terminal reports the first information based on the situation of the network device; or after recording the first information, the terminal sends an available indication information to the network device to notify the network device that the terminal has stored the first information, and the network device can request the first information from the terminal according to the indication information, and the terminal reports the first information based on the request of the network device.

[0564] After receiving the first information, the network device may perform LTM mobility optimization or forward the information to a related node via interface signaling for LTM mobility optimization. The interface signaling may be Xn, X2, E1, or F1 interface signaling.

[0565] In an embodiment of the present disclosure, when a terminal is configured with LTM configuration information and a terminal failure occurs, the LTM-related failure information is recorded and reported to a network device. The network device may perform mobility optimization based on the LTM-related failure information, or the network device may send the LTM-related failure information to other related nodes, which then perform mobility optimization.

[0566] The above embodiment introduces the method for handling mobility failure of the present disclosure. The following embodiment will further illustrate the corresponding device with reference to the accompanying drawings.

[0567] Specifically, as shown in FIG3 , an embodiment of the present disclosure provides a mobility failure processing device 300 , which is applied to a terminal and includes:

[0568] a recording unit 310 configured to, when configured with layer 1 and / or layer 2 triggered mobility LTM configuration information, record first information if a failure occurs, the first information being LTM-related failure information;

[0569] The first sending unit 320 is configured to send the first information to the network device.

[0570] In some embodiments, the recording unit is configured to implement at least one of the following:

[0571] When the terminal is configured with the mobility LTM configuration information triggered by layer 1 and / or layer 2, if a single failure occurs, recording the first information;

[0572] When the terminal is configured with the mobility LTM configuration information triggered by layer 1 and / or layer 2, if continuous failures occur, the terminal records the first information, where the continuous failures include at least two failures.

[0573] In some embodiments, the single failure includes one of the following:

[0574] Failed to execute LTM;

[0575] A radio link failure (RLF) occurs in the source cell;

[0576] Failed to perform a traditional cell change.

[0577] In some embodiments, the consecutive failures include one of the following:

[0578] The LTM execution fails, and the LTM recovery fails;

[0579] RLF occurs in the source cell and LTM recovery fails;

[0580] The traditional cell change fails and the recovery via LTM fails;

[0581] If LTM fails and LTM recovery succeeds, RLF occurs within the first time of accessing the target cell.

[0582] An RLF occurs in the source cell, is successfully recovered through LTM, and an RLF occurs within the second time of accessing the target cell;

[0583] The traditional cell change fails, but LTM recovery succeeds, and RLF occurs within the third time of accessing the target cell.

[0584] In some embodiments, the first information includes at least one of the following:

[0585] Information about the failure to execute LTM;

[0586] Information about LTM recovery failures;

[0587] Information about the time when the failure occurred;

[0588] Indicates whether subsequent LTMs are supported.

[0589] In some embodiments, the information related to the failure to execute the LTM includes at least one of the following:

[0590] The first indication information is used to indicate the LTM execution type;

[0591] LTM cell change information;

[0592] Identification information of LTM candidate cells;

[0593] Layer 1 measurement result information of LTM candidate cells;

[0594] Layer 1 measurement configuration information of LTM candidate cells;

[0595] Information about the status of the transmission configuration indication TCI activated in advance;

[0596] The second indication information is used to indicate whether the execution mode of LTM is a random access channel RACH or non-RACH;

[0597] Timing Advance (TA) value of the target cell determined by the terminal;

[0598] Configuration authorization CG configuration information of the target cell;

[0599] The value of the LTM timer;

[0600] The time between the time the terminal receives the LTM configuration information and the time the LTM execution fails;

[0601] The time between the moment when the terminal fails to execute the LTM and the moment when the first information is sent to the network device;

[0602] Refer to the configuration information;

[0603] Configuration information of LTM candidate cells;

[0604] The candidate cell executes the configuration information.

[0605] In some embodiments, the information related to the LTM recovery failure includes at least one of the following:

[0606] LTM restores the identification information of the cell;

[0607] The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell;

[0608] The TA value of the LTM recovery cell determined by the terminal;

[0609] Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process;

[0610] The fifth indication information is used to indicate whether the terminal has restored downlink synchronization of the cell with the LTM;

[0611] LTM restores the CG configuration information of the cell;

[0612] Refer to the configuration information;

[0613] LTM restores the cell configuration information;

[0614] Identification information of the cell where the radio link failure occurs.

[0615] In some embodiments, the information related to the time when the failure occurred includes at least one of the following:

[0616] The time between the time the terminal receives the LTM configuration information and the time when RLF occurs;

[0617] The time between the moment the terminal receives the LTM configuration information and the moment the traditional cell change fails;

[0618] The time between the moment when the terminal receives the LTM configuration information and the moment when the first information is sent to the network device;

[0619] The time between the time when the RLF occurs in the terminal and the time when the first information is sent to the network device;

[0620] The time between the moment when the terminal fails to change the traditional cell and the moment when the first information is sent to the network device.

[0621] In some embodiments, the LTM cell change information includes at least one of the following:

[0622] TCI status identification information;

[0623] Target configuration identification information;

[0624] TA value of the target cell;

[0625] Non-contention random access CFRA resource information.

[0626] In some embodiments, the recording unit is specifically configured to perform at least one of the following:

[0627] recording the first information in a report;

[0628] The first information is recorded in different reports, and association relationships are established between different reports.

[0629] In some embodiments, establishing associations between different reports includes at least one of the following:

[0630] Establish associations between different reports through parameters in different reports;

[0631] Setting indication information in the report, and establishing association relationships between different reports through the indication information;

[0632] Establish associations between different reports through timestamps;

[0633] The association relationship between different reports is established through the terminal identification information.

[0634] In some embodiments, the apparatus further comprises:

[0635] A second receiving unit, configured to receive a request message sent by the network device;

[0636] The first sending unit is specifically configured to send the first information to the network device according to the request message.

[0637] In some embodiments, the apparatus further comprises:

[0638] The second sending unit is configured to send sixth indication information to the network device, where the sixth indication information is used to indicate that the terminal stores the first information.

[0639] It should be noted here that the above-mentioned device provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment applied to the terminal, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0640] Specifically, as shown in FIG4 , an embodiment of the present disclosure provides a mobility failure processing apparatus 400 , which is applied to a network device and includes:

[0641] The first receiving unit 410 is configured to receive first information sent by a terminal, where the first information is recorded when the terminal is configured with LTM configuration information and a failure occurs; the first information is LTM-related failure information.

[0642] In some embodiments, the failure comprises a single failure and / or consecutive failures, wherein the consecutive failures comprise at least two failures.

[0643] In some embodiments, the single failure includes one of the following:

[0644] Failed to execute LTM;

[0645] RLF occurs in the source cell;

[0646] Failed to perform a traditional cell change.

[0647] In some embodiments, the consecutive failures include one of the following:

[0648] The LTM execution fails, and the LTM recovery fails;

[0649] RLF occurs in the source cell and LTM recovery fails;

[0650] The traditional cell change fails and the recovery via LTM fails;

[0651] If LTM fails and LTM recovery succeeds, RLF occurs within the first time of accessing the target cell.

[0652] An RLF occurs in the source cell, is successfully recovered through LTM, and an RLF occurs within the second time of accessing the target cell;

[0653] The traditional cell change fails, but LTM recovery succeeds, and RLF occurs within the third time of accessing the target cell.

[0654] In some embodiments, the first information includes at least one of the following:

[0655] Information about the failure to execute LTM;

[0656] Information about LTM recovery failures;

[0657] Information about the time when the failure occurred;

[0658] Indicates whether subsequent LTMs are supported.

[0659] In some embodiments, the information related to the failure to execute the LTM includes at least one of the following:

[0660] The first indication information is used to indicate the LTM execution type;

[0661] LTM cell change information;

[0662] Identification information of LTM candidate cells;

[0663] Layer 1 measurement result information of LTM candidate cells;

[0664] Layer 1 measurement configuration information of LTM candidate cells;

[0665] Information about the status of the transmission configuration indication TCI activated in advance;

[0666] The second indication information is used to indicate whether the execution mode of LTM is a random access channel RACH or non-RACH;

[0667] The TA value of the target cell determined by the terminal;

[0668] Configuration authorization CG configuration information of the target cell;

[0669] The value of the LTM timer;

[0670] The time between the time the terminal receives the LTM configuration information and the time the LTM execution fails;

[0671] The time between the moment when the terminal fails to execute the LTM and the moment when the first information is sent to the network device;

[0672] Refer to the configuration information;

[0673] Configuration information of LTM candidate cells;

[0674] The candidate cell executes the configuration information.

[0675] In some embodiments, the information related to the LTM recovery failure includes at least one of the following:

[0676] LTM restores the identification information of the cell;

[0677] The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell;

[0678] The TA value of the LTM recovery cell determined by the terminal;

[0679] Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process;

[0680] The fifth indication information is used to indicate whether the terminal has restored downlink synchronization of the cell with the LTM;

[0681] LTM restores the CG configuration information of the cell;

[0682] Refer to the configuration information;

[0683] LTM restores the cell configuration information;

[0684] Identification information of the cell where the radio link failure occurs.

[0685] In some embodiments, the information related to the time when the failure occurred includes at least one of the following:

[0686] The time between the time the terminal receives the LTM configuration information and the time when RLF occurs;

[0687] The time between the moment the terminal receives the LTM configuration information and the moment the traditional cell change fails;

[0688] The time between the moment when the terminal receives the LTM configuration information and the moment when the first information is sent to the network device;

[0689] The time between the time when the RLF occurs in the terminal and the time when the first information is sent to the network device;

[0690] The time between the moment when the terminal fails to change the traditional cell and the moment when the first information is sent to the network device.

[0691] In some embodiments, the LTM cell change information includes at least one of the following:

[0692] TCI status identification information;

[0693] Target configuration identification information;

[0694] TA value of the target cell;

[0695] Non-contention random access CFRA resource information.

[0696] In some embodiments, the first information is recorded in one report, and / or the first information is recorded in different reports, and the different reports are associated with each other.

[0697] In some embodiments, different reports are linked by at least one of the following:

[0698] Parameters in different reports;

[0699] Instructions in the report;

[0700] Timestamp;

[0701] Terminal identification information.

[0702] In some embodiments, the apparatus further comprises:

[0703] The third sending unit is configured to send a request message to the terminal.

[0704] In some embodiments, the apparatus further comprises:

[0705] The third receiving unit is configured to receive sixth indication information sent by the terminal, where the sixth indication information is used to indicate that the terminal stores the first information.

[0706] In some embodiments, the apparatus further comprises:

[0707] A processing unit is configured to perform LTM mobility optimization according to the first information; and / or send the first information to a first node, where the first information is used by the first node to perform LTM mobility optimization according to the first information.

[0708] It should be noted here that the above-mentioned device provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment applied to the network device, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0709] It should be noted that the division of units in the embodiments of the present disclosure is schematic and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of the present disclosure may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0710] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present disclosure is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the method described in each embodiment of the present disclosure. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0711] As shown in FIG5 , an embodiment of the present disclosure further provides a terminal, including: a memory 520, a transceiver 500, and a processor 510; wherein the memory 520 is used to store a computer program; the transceiver 500 is used to receive and send data under the control of the processor 510; and the processor 510 is used to read the computer program in the memory and perform the following operations:

[0712] In a case where layer 1 and / or layer 2 triggered mobility LTM configuration information is configured, if a failure occurs, first information is recorded, where the first information is LTM-related failure information;

[0713] The first information is sent to the network device.

[0714] In some embodiments, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0715] When the terminal is configured with the mobility LTM configuration information triggered by layer 1 and / or layer 2, if a single failure occurs, recording the first information;

[0716] When the terminal is configured with the mobility LTM configuration information triggered by layer 1 and / or layer 2, if continuous failures occur, the terminal records the first information, where the continuous failures include at least two failures.

[0717] In some embodiments, the single failure includes one of the following:

[0718] Failed to execute LTM;

[0719] A radio link failure (RLF) occurs in the source cell;

[0720] Failed to perform a traditional cell change.

[0721] In some embodiments, the consecutive failures include one of the following:

[0722] The LTM execution fails, and the LTM recovery fails;

[0723] RLF occurs in the source cell and LTM recovery fails;

[0724] The traditional cell change fails and the recovery via LTM fails;

[0725] If LTM fails and LTM recovery succeeds, RLF occurs within the first time of accessing the target cell.

[0726] An RLF occurs in the source cell, is successfully recovered through LTM, and an RLF occurs within the second time of accessing the target cell;

[0727] The traditional cell change fails, but LTM recovery succeeds, and RLF occurs within the third time of accessing the target cell.

[0728] In some embodiments, the first information includes at least one of the following:

[0729] Information about the failure to execute LTM;

[0730] Information about LTM recovery failures;

[0731] Information about the time when the failure occurred;

[0732] Indicates whether subsequent LTMs are supported.

[0733] In some embodiments, the information related to the failure to execute the LTM includes at least one of the following:

[0734] The first indication information is used to indicate the LTM execution type;

[0735] LTM cell change information;

[0736] Identification information of LTM candidate cells;

[0737] Layer 1 measurement result information of LTM candidate cells;

[0738] Layer 1 measurement configuration information of LTM candidate cells;

[0739] Information about the status of the transmission configuration indication TCI activated in advance;

[0740] The second indication information is used to indicate whether the execution mode of LTM is a random access channel RACH or non-RACH;

[0741] Timing Advance (TA) value of the target cell determined by the terminal;

[0742] Configuration authorization CG configuration information of the target cell;

[0743] The value of the LTM timer;

[0744] The time between the time the terminal receives the LTM configuration information and the time the LTM execution fails;

[0745] The time between the moment when the terminal fails to execute the LTM and the moment when the first information is sent to the network device;

[0746] Refer to the configuration information;

[0747] Configuration information of LTM candidate cells;

[0748] The candidate cell executes the configuration information.

[0749] In some embodiments, the information related to the LTM recovery failure includes at least one of the following:

[0750] LTM restores the identification information of the cell;

[0751] The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell;

[0752] The TA value of the LTM recovery cell determined by the terminal;

[0753] Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process;

[0754] The fifth indication information is used to indicate whether the terminal has restored downlink synchronization of the cell with the LTM;

[0755] LTM restores the CG configuration information of the cell;

[0756] Refer to the configuration information;

[0757] LTM restores the cell configuration information;

[0758] Identification information of the cell where the radio link failure occurs.

[0759] In some embodiments, the information related to the time when the failure occurred includes at least one of the following:

[0760] The time between the time the terminal receives the LTM configuration information and the time when RLF occurs;

[0761] The time between the moment the terminal receives the LTM configuration information and the moment the traditional cell change fails;

[0762] The time between the moment when the terminal receives the LTM configuration information and the moment when the first information is sent to the network device;

[0763] The time between the time when the RLF occurs in the terminal and the time when the first information is sent to the network device;

[0764] The time between the moment when the terminal fails to change the traditional cell and the moment when the first information is sent to the network device.

[0765] In some embodiments, the LTM cell change information includes at least one of the following:

[0766] TCI status identification information;

[0767] Target configuration identification information;

[0768] TA value of the target cell;

[0769] Non-contention random access CFRA resource information.

[0770] In some embodiments, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0771] recording the first information in a report;

[0772] The first information is recorded in different reports, and association relationships are established between different reports.

[0773] In some embodiments, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0774] Establish associations between different reports through parameters in different reports;

[0775] Setting indication information in the report, and establishing association relationships between different reports through the indication information;

[0776] Establish associations between different reports through timestamps;

[0777] The association relationship between different reports is established through the terminal identification information.

[0778] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0779] Receive a request message sent by a network device;

[0780] The sending the first information to the network device includes:

[0781] The first information is sent to the network device according to the request message.

[0782] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0783] Send sixth indication information to the network device, where the sixth indication information is used to indicate that the terminal stores the first information.

[0784] In FIG5 , the bus architecture may include any number of interconnected buses and bridges, specifically various circuits connected together by one or more processors represented by processor 510 and memory represented by memory 520. The bus architecture may also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 500 may be a plurality of components, including a transmitter and a transceiver, providing a unit for communicating with various other devices on a transmission medium. For different user devices, the user interface 530 may also be an interface capable of connecting external or internal devices as required, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0785] The processor 510 is responsible for managing the bus architecture and general processing, and the memory 520 can store data used by the processor 510 when performing operations.

[0786] In some embodiments, the processor 510 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0787] The processor calls the computer program stored in the memory to execute any of the methods provided by the embodiments of the present disclosure according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

[0788] It should be noted here that the above-mentioned terminal provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment applied to the terminal, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0789] As shown in FIG6 , an embodiment of the present disclosure further provides a network device, including: a memory 620, a transceiver 600, and a processor 610; wherein the memory 620 is used to store a computer program; the transceiver 600 is used to receive and send data under the control of the processor 610; and the processor 610 is used to read the computer program in the memory and perform the following operations:

[0790] The first information sent by the receiving terminal is recorded when the terminal is configured with LTM configuration information and a failure occurs; the first information is LTM-related failure information.

[0791] In some embodiments, the failure comprises a single failure and / or consecutive failures, wherein the consecutive failures comprise at least two failures.

[0792] In some embodiments, the single failure includes one of the following:

[0793] Failed to execute LTM;

[0794] RLF occurs in the source cell;

[0795] Failed to execute traditional cell change

[0796] In some embodiments, the consecutive failures include one of the following:

[0797] The LTM execution fails, and the LTM recovery fails;

[0798] RLF occurs in the source cell and LTM recovery fails;

[0799] The traditional cell change fails and the recovery via LTM fails;

[0800] If LTM fails and LTM recovery succeeds, RLF occurs within the first time of accessing the target cell.

[0801] An RLF occurs in the source cell, is successfully recovered through LTM, and an RLF occurs within the second time of accessing the target cell;

[0802] The traditional cell change fails, but LTM recovery succeeds, and RLF occurs within the third time of accessing the target cell.

[0803] In some embodiments, the first information includes at least one of the following:

[0804] Information about the failure to execute LTM;

[0805] Information about LTM recovery failures;

[0806] Information about the time when the failure occurred;

[0807] Indicates whether subsequent LTMs are supported.

[0808] In some embodiments, the information related to the failure to execute the LTM includes at least one of the following:

[0809] The first indication information is used to indicate the LTM execution type;

[0810] LTM cell change information;

[0811] Identification information of LTM candidate cells;

[0812] Layer 1 measurement result information of LTM candidate cells;

[0813] Layer 1 measurement configuration information of LTM candidate cells;

[0814] Information about the status of the transmission configuration indication TCI activated in advance;

[0815] The second indication information is used to indicate whether the execution mode of LTM is a random access channel RACH or non-RACH;

[0816] The TA value of the target cell determined by the terminal;

[0817] Configuration authorization CG configuration information of the target cell;

[0818] The value of the LTM timer;

[0819] The time between the time the terminal receives the LTM configuration information and the time the LTM execution fails;

[0820] The time between the moment when the terminal fails to execute the LTM and the moment when the first information is sent to the network device;

[0821] Refer to the configuration information;

[0822] Configuration information of LTM candidate cells;

[0823] The candidate cell executes the configuration information.

[0824] In some embodiments, the information related to the LTM recovery failure includes at least one of the following:

[0825] LTM restores the identification information of the cell;

[0826] The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell;

[0827] The TA value of the LTM recovery cell determined by the terminal;

[0828] Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process;

[0829] The fifth indication information is used to indicate whether the terminal has restored downlink synchronization of the cell with the LTM;

[0830] LTM restores the CG configuration information of the cell;

[0831] Refer to the configuration information;

[0832] LTM restores the cell configuration information;

[0833] Identification information of the cell where the radio link failure occurs.

[0834] In some embodiments, the information related to the time when the failure occurred includes at least one of the following:

[0835] The time between the time the terminal receives the LTM configuration information and the time when RLF occurs;

[0836] The time between the moment the terminal receives the LTM configuration information and the moment the traditional cell change fails;

[0837] The time between the moment when the terminal receives the LTM configuration information and the moment when the first information is sent to the network device;

[0838] The time between the time when the RLF occurs in the terminal and the time when the first information is sent to the network device;

[0839] The time between the moment when the terminal fails to change the traditional cell and the moment when the first information is sent to the network device.

[0840] In some embodiments, the LTM cell change information includes at least one of the following:

[0841] TCI status identification information;

[0842] Target configuration identification information;

[0843] TA value of the target cell;

[0844] Non-contention random access CFRA resource information.

[0845] In some embodiments, the first information is recorded in one report, and / or the first information is recorded in different reports, and the different reports are associated with each other.

[0846] In some embodiments, different reports are linked by at least one of the following:

[0847] Parameters in different reports;

[0848] Instructions in the report;

[0849] Timestamp;

[0850] Terminal identification information.

[0851] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0852] Send a request message to the terminal.

[0853] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0854] The sixth indication information sent by the receiving terminal is used to indicate that the terminal stores the first information.

[0855] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0856] Perform LTM mobility optimization according to the first information; and / or send the first information to the first node, where the first information is used by the first node to perform LTM mobility optimization according to the first information.

[0857] In FIG6 , the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 610 and memory represented by memory 620. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, all of which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. The transceiver 600 may be a plurality of components, namely, including a transmitter and a transceiver, providing a unit for communicating with various other devices over a transmission medium. The processor 610 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 610 when performing operations.

[0858] The processor 610 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0859] It should be noted here that the above-mentioned network device provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment applied to the network device, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0860] In addition, a specific embodiment of the present disclosure further provides a processor-readable storage medium on which a computer program is stored. When the program is executed by the processor, the steps of the above-mentioned mobility failure processing method are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here. Among them, the readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disk, hard disk, magnetic tape, magneto-optical disk (MO)), optical storage (such as (Compact Disk, CD), Digital Versatile Disc (DVD), Blu-ray Disc (BD), High-Definition Versatile Disc (HVD)), etc.), and semiconductor memory (such as read-only memory (ROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), non-volatile memory (NAND FLASH), solid-state drive (SSD)), etc.

[0861] It should be noted that the technical solutions provided by the embodiments of the present disclosure can be applicable to a variety of systems, especially 5G systems. For example, applicable systems may be global system of mobile communication (GSM) systems, code division multiple access (CDMA) systems, wideband code division multiple access (WCDMA) general packet radio service (GPRS) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, long term evolution advanced (LTE-A) systems, universal mobile telecommunication systems (UMTS), worldwide interoperability for microwave access (WiMAX) systems, 5G new air interface (NR) systems, etc. These various systems include terminal devices and network devices. The system may also include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), etc.

[0862] The terminal device involved in the embodiments of the present disclosure may be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called User Equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges voice and / or data with a radio access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, or a user device, but is not limited in the embodiments of the present disclosure.

[0863] The network device involved in the embodiments of the present disclosure may be a base station, which may include multiple cells providing services to terminals. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in an access network that communicates with a wireless terminal device through one or more sectors on an air interface, or may be called another name. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present disclosure may be a base transceiver station (BTS) in the Global System for Mobile communications (GSM) or code division multiple access (CDMA), a network device (NodeB) in wide-band code division multiple access (WCDMA), an evolutionary Node B (eNB or e-NodeB) in the long term evolution (LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), a home evolved Node B (HeNB), a relay node, a femto, a pico, etc., and is not limited in the embodiments of the present disclosure. In some network structures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be geographically separated.

[0864] Network devices and terminal devices can each use one or more antennas for Multiple Input Multiple Output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the configuration and number of antenna combinations, MIMO transmission can be two-dimensional MIMO (2D-MIMO), three-dimensional MIMO (3D-MIMO), full-dimensional MIMO (FD-MIMO), or massive MIMO. It can also use diversity transmission, precoding, or beamforming.

[0865] Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage, etc.) containing computer-usable program code.

[0866] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one process or multiple processes in the flowchart and / or one box or multiple boxes in the block diagram.

[0867] These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0868] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0869] In addition, it should be noted that, in the apparatus and method of the present invention, it is obvious that each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent schemes of the present invention. Moreover, the steps of performing the above-mentioned series of processing can naturally be performed in chronological order according to the order of description, but it is not necessary to perform them in chronological order, and some steps can be performed in parallel or independently of each other. For those of ordinary skill in the art, it will be understood that all or any steps or components of the method and apparatus of the present invention can be implemented in any computing device (including processors, storage media, etc.) or a network of computing devices in hardware, firmware, software or a combination thereof, which can be achieved by those of ordinary skill in the art using their basic programming skills after reading the description of the present invention.

[0870] It should be noted that it should be understood that the division of the above modules is merely a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. Moreover, these modules can all be implemented in the form of software called by a processing element; or they can all be implemented in the form of hardware; or some modules can be implemented in the form of software called by a processing element, and some modules can be implemented in the form of hardware. For example, a module can be a separately established processing element, or it can be integrated into a chip of the above-mentioned device. In addition, it can also be stored in the memory of the above-mentioned device in the form of program code, and called by a processing element of the above-mentioned device to perform the functions of the above-mentioned module. The implementation of other modules is similar. In addition, these modules can all or partly be integrated together, or they can be implemented independently. The processing element described here can be an integrated circuit with signal processing capabilities. During implementation, each step of the above method or each module above can be completed by an integrated logic circuit of hardware in the processor element or instructions in the form of software.

[0871] For example, each module, unit, sub-unit or sub-module can be one or more integrated circuits configured to implement the above method, such as one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), or one or more field programmable gate arrays (FPGAs). For another example, when a module is implemented by scheduling program code through a processing element, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processor that can call program code. For another example, these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0872] The terms "first," "second," and the like in the specification and claims of the present disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present disclosure described herein may be implemented in a sequence other than that illustrated or described herein. In addition, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units need not be limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to these processes, methods, products, or devices. In addition, the use of "and / or" in the specification and claims to indicate at least one of the connected objects, for example, A and / or B and / or C, means that seven situations are included: A alone, B alone, C alone, both A and B present, both B and C present, both A and C present, and all A, B, and C present. Similarly, the use of "at least one of A and B" in the specification and claims should be understood to mean "A alone, B alone, or both A and B present."

[0873] Obviously, those skilled in the art may make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include these modifications and variations.

Claims

1. A method for handling mobility failure, comprising: When the terminal is configured with the mobility LTM configuration information triggered by layer 1 and / or layer 2, if a failure occurs, the terminal records the first information, where the first information is the failure information related to the LTM; The terminal sends the first information to the network device.

2. The method according to claim 1, wherein: In the case where the mobility LTM configuration information triggered by layer 1 and / or layer 2 is configured, if a failure occurs, recording the first information includes at least one of the following: When the terminal is configured with the mobility LTM configuration information triggered by layer 1 and / or layer 2, if a single failure occurs, recording the first information; When the terminal is configured with the mobility LTM configuration information triggered by layer 1 and / or layer 2, if continuous failures occur, the terminal records the first information, where the continuous failures include at least two failures.

3. The method according to claim 2, wherein: The single failure includes one of the following: Failed to execute LTM; A radio link failure RLF occurs in the source cell; Failed to perform a traditional cell change.

4. The method according to claim 2, wherein: The consecutive failures include one of the following: Failed to execute LTM and failed to recover through LTM; RLF occurs in the source cell and recovery through LTM fails; The traditional cell change fails and the recovery via LTM fails; The LTM execution fails, but the LTM recovery succeeds, and RLF occurs within the first time of accessing the target cell; RLF occurs in the source cell, recovery is successful through LTM, and RLF occurs within the second time of accessing the target cell; The traditional cell change fails, but is successfully recovered through LTM, and RLF occurs within the third time of accessing the target cell.

5. The method according to claim 1, wherein: The first information includes at least one of the following: Information related to the failure to execute LTM; Information about LTM recovery failure; Information about the time when the failure occurred; Indication of whether subsequent LTM is supported.

6. The method according to claim 5, wherein: The relevant information of the failure to execute LTM includes at least one of the following: The first indication information is used to indicate the LTM execution type; Information about LTM cell changes; Identification information of LTM candidate cells; Layer 1 measurement result information of LTM candidate cells; Layer 1 measurement configuration information of LTM candidate cells; Information about the status of the transmission configuration indication TCI activated in advance; The second indication information is used to indicate whether the execution mode of the LTM is a random access channel RACH or non-RACH; The timing advance TA value of the target cell determined by the terminal; Configuration authorization CG configuration information of the target cell; The value of the LTM timer; The time between the time when the terminal receives the LTM configuration information and the time when the LTM execution fails; The time between the moment when the terminal fails to execute the LTM and the moment when the first information is sent to the network device; Refer to configuration information; Configuration information of LTM candidate cells; The candidate cell executes the configuration information.

7. The method according to claim 5, wherein: The relevant information of the LTM recovery failure includes at least one of the following: LTM restores the identification information of the cell; The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell; The TA value of the LTM recovery cell determined by the terminal; Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process; The fifth indication information is used to indicate whether the terminal recovers downlink synchronization of the cell with the LTM; LTM restores the CG configuration information of the cell; Refer to configuration information; LTM restores the cell configuration information; The identification information of the cell where the radio link failure occurs.

8. The method according to claim 5, wherein: The information related to the time when the failure occurred includes at least one of the following: The time between the time when the terminal receives the LTM configuration information and the time when the RLF occurs; The time between the moment when the terminal receives the LTM configuration information and the moment when the traditional cell change fails; The time between the moment when the terminal receives the LTM configuration information and the moment when the first information is sent to the network device; The time between the time when the RLF occurs in the terminal and the time when the first information is sent to the network device; The time between the time when the terminal fails to change the traditional cell and the time when the first information is sent to the network device.

9. The method according to claim 6, wherein: The LTM cell change information includes at least one of the following: TCI status identification information; Target configuration identification information; TA value of the target cell; Non-contention random access CFRA resource information.

10. The method according to claim 1, wherein: The recorded first information includes at least one of the following: recording the first information in a report; The first information is recorded in different reports, and association relationships are established between different reports.

11. The method according to claim 10, wherein: The establishing of association relationships between different reports includes at least one of the following: Establish associations between different reports through parameters in different reports; Set indication information in the report, and establish association relationships between different reports through the indication information Tie; Establish associations between different reports through timestamps; The association relationship between different reports is established through the terminal's identification information.

12. The method according to claim 1, further comprising: Receiving a request message sent by a network device; The sending the first information to the network device includes: The first information is sent to the network device according to the request message.

13. The method according to claim 12, wherein: Before receiving the request message sent by the network device, the method further includes: Send sixth indication information to the network device, where the sixth indication information is used to indicate that the terminal stores the first information.

14. A method for handling mobility failure, comprising: The network side device receives first information sent by the terminal, where the first information is recorded when the terminal is configured with LTM configuration information and a failure occurs; The first information is LTM-related failure information.

15. The method according to claim 14, wherein: The failure includes a single failure and / or continuous failure, and the continuous failure includes at least two failures.

16. The method according to claim 15, wherein: The single failure includes one of the following: Failed to execute LTM; RLF occurs in the source cell; Failed to perform a traditional cell change.

17. The method according to claim 15, wherein: The consecutive failures include one of the following: Failed to execute LTM and failed to recover through LTM; RLF occurs in the source cell and recovery through LTM fails; The traditional cell change fails and the recovery via LTM fails; The LTM execution fails, but the LTM recovery succeeds, and RLF occurs within the first time of accessing the target cell; RLF occurs in the source cell, recovery is successful through LTM, and RLF occurs within the second time of accessing the target cell; The traditional cell change fails, but is successfully recovered through LTM, and RLF occurs within the third time of accessing the target cell.

18. The method according to claim 14, wherein: The first information includes at least one of the following: Information related to the failure to execute LTM; Information related to LTM recovery failure; Information about the time when the failure occurred; Indication of whether subsequent LTM is supported.

19. The method according to claim 18, wherein: The relevant information of the failure to execute LTM includes at least one of the following: The first indication information is used to indicate the LTM execution type; Information about LTM cell changes; Identification information of LTM candidate cells; Layer 1 measurement result information of LTM candidate cells; Layer 1 measurement configuration information of LTM candidate cells; Information about the status of the transmission configuration indication TCI activated in advance; The second indication information is used to indicate whether the execution mode of the LTM is a random access channel RACH or non-RACH; The TA value of the target cell determined by the terminal; Configuration authorization CG configuration information of the target cell; The value of the LTM timer; The time between the time when the terminal receives the LTM configuration information and the time when the LTM execution fails; The time between the moment when the terminal fails to execute the LTM and the moment when the first information is sent to the network device; Refer to configuration information; Configuration information of LTM candidate cells; The candidate cell executes the configuration information.

20. The method according to claim 18, wherein: The relevant information of the LTM recovery failure includes at least one of the following: LTM restores the identification information of the cell; The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell; The TA value of the LTM recovery cell determined by the terminal; Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process; The fifth indication information is used to indicate whether the terminal recovers downlink synchronization of the cell with the LTM; LTM restores the CG configuration information of the cell; Refer to configuration information; LTM restores the cell configuration information; The identification information of the cell where the radio link failure occurs.

21. The method according to claim 18, wherein: The information related to the time when the failure occurred includes at least one of the following: The time between the time when the terminal receives the LTM configuration information and the time when the RLF occurs; The time between the moment when the terminal receives the LTM configuration information and the moment when the traditional cell change fails; The time between the moment when the terminal receives the LTM configuration information and the moment when the first information is sent to the network device; The time between the time when the RLF occurs in the terminal and the time when the first information is sent to the network device; The time between the time when the terminal fails to change the traditional cell and the time when the first information is sent to the network device.

22. The method according to claim 19, wherein: The LTM cell change information includes at least one of the following: TCI status identification information; Target configuration identification information; TA value of the target cell; Non-contention random access CFRA resource information.

23. The method according to claim 14, wherein: The first information is recorded in one report, and / or the first information is recorded in different reports, and the different reports are associated with each other.

24. The method according to claim 23, wherein: Different reports are related by at least one of the following: Parameters in different reports; Instructions in the report; Timestamp; Terminal identification information.

25. The method of claim 14, wherein: Before receiving the first information sent by the terminal, the method further includes: Send a request message to the terminal.

26. The method according to claim 25, wherein: Before sending the request message to the terminal, the method further includes: The sixth indication information sent by the receiving terminal is used to indicate that the terminal stores the first information.

27. The method of claim 14, further comprising: performing LTM mobility optimization according to the first information; And / or, sending the first information to the first node, where the first information is used by the first node to perform LTM mobility optimization according to the first information.

28. A terminal, comprising: Memory, transceiver, processor: Memory for storing computer programs; a transceiver for receiving and sending data under the control of the processor; A processor is configured to read the computer program in the memory and perform the following operations: In the case of being configured with layer 1 and / or layer 2 triggered mobility LTM configuration information, if a failure occurs, first information is recorded, where the first information is LTM related failure information; The first information is sent to a network device.

29. The terminal according to claim 28, wherein: The processor is configured to read the computer program in the memory and perform at least one of the following operations: When the terminal is configured with the mobility LTM configuration information triggered by layer 1 and / or layer 2, if a single failure occurs, recording the first information; When the terminal is configured with the mobility LTM configuration information triggered by layer 1 and / or layer 2, if continuous failures occur, the terminal records the first information, where the continuous failures include at least two failures.

30. The terminal according to claim 29, wherein: The single failure includes one of the following: Failed to execute LTM; A radio link failure RLF occurs in the source cell; Failed to perform a traditional cell change.

31. The terminal according to claim 29, wherein: The consecutive failures include one of the following: Failed to execute LTM and failed to recover through LTM; RLF occurs in the source cell and recovery through LTM fails; The traditional cell change fails and the recovery via LTM fails; The LTM execution fails, but the LTM recovery succeeds, and RLF occurs within the first time of accessing the target cell; RLF occurs in the source cell, recovery is successful through LTM, and RLF occurs within the second time of accessing the target cell; The traditional cell change fails, but is successfully recovered through LTM, and RLF occurs within the third time of accessing the target cell.

32. The terminal according to claim 28, wherein: The first information includes at least one of the following: Information related to the failure to execute LTM; Information about LTM recovery failure; Information about the time when the failure occurred; Indication of whether subsequent LTM is supported.

33. The terminal according to claim 32, wherein: The relevant information of the failure to execute LTM includes at least one of the following: The first indication information is used to indicate the LTM execution type; Information about LTM cell changes; Identification information of LTM candidate cells; Layer 1 measurement result information of LTM candidate cells; Layer 1 measurement configuration information of LTM candidate cells; Information about the status of the transmission configuration indication TCI activated in advance; The second indication information is used to indicate whether the execution mode of the LTM is a random access channel RACH or non-RACH; The timing advance TA value of the target cell determined by the terminal; Configuration authorization CG configuration information of the target cell; The value of the LTM timer; The time between the time when the terminal receives the LTM configuration information and the time when the LTM execution fails; The time between the moment when the terminal fails to execute the LTM and the moment when the first information is sent to the network device; Refer to configuration information; Configuration information of LTM candidate cells; The candidate cell executes the configuration information.

34. The terminal according to claim 32, wherein: The relevant information of the LTM recovery failure includes at least one of the following: LTM restores the identification information of the cell; The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell; The TA value of the LTM recovery cell determined by the terminal; Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process; The fifth indication information is used to indicate whether the terminal recovers downlink synchronization of the cell with the LTM; LTM restores the CG configuration information of the cell; Refer to configuration information; LTM restores the cell configuration information; The identification information of the cell where the radio link failure occurs.

35. The terminal according to claim 32, wherein: The information related to the time when the failure occurred includes at least one of the following: The time between the time when the terminal receives the LTM configuration information and the time when the RLF occurs; The time between the moment when the terminal receives the LTM configuration information and the moment when the traditional cell change fails; The time between the moment when the terminal receives the LTM configuration information and the moment when the first information is sent to the network device; The time between the time when the RLF occurs in the terminal and the time when the first information is sent to the network device; From the time when the terminal fails to change the traditional cell to the time when the first information is sent to the network device The time between moments.

36. The terminal according to claim 33, wherein: The LTM cell change information includes at least one of the following: TCI status identification information; Target configuration identification information; TA value of the target cell; Non-contention random access CFRA resource information.

37. The terminal according to claim 28, wherein: The processor is configured to read the computer program in the memory and perform at least one of the following operations: recording the first information in a report; The first information is recorded in different reports, and association relationships are established between different reports.

38. The terminal according to claim 37, wherein: The processor is configured to read the computer program in the memory and perform at least one of the following operations: Establish associations between different reports through parameters in different reports; Setting indication information in the report, and establishing association relationships between different reports through the indication information; Establish associations between different reports through timestamps; The association relationship between different reports is established through the terminal's identification information.

39. The terminal according to claim 28, wherein: The processor is configured to read the computer program in the memory and perform the following operations: Receiving a request message sent by a network device; The sending the first information to the network device includes: The first information is sent to the network device according to the request message.

40. The terminal according to claim 39, wherein: The processor is used to read the computer program in the memory and perform the following operations Send sixth indication information to the network device, where the sixth indication information is used to indicate that the terminal stores the first information.

41. A network device comprising: Memory, transceiver, processor: Memory for storing computer programs; A transceiver for receiving, under the control of the processor and send data; A processor is configured to read the computer program in the memory and perform the following operations: The first information sent by the receiving terminal is recorded when the terminal is configured with LTM configuration information and a failure occurs; the first information is failure information related to LTM.

42. The network device according to claim 41, wherein: The failure includes a single failure and / or continuous failure, and the continuous failure includes at least two failures.

43. The network device according to claim 42, wherein: The single failure includes one of the following: Failed to execute LTM; RLF occurs in the source cell; Failed to perform a traditional cell change.

44. The network device according to claim 42, wherein: The consecutive failures include one of the following: Failed to execute LTM and failed to recover through LTM; RLF occurs in the source cell and recovery through LTM fails; The traditional cell change fails and the recovery via LTM fails; The LTM execution fails, but the LTM recovery succeeds, and RLF occurs within the first time of accessing the target cell; RLF occurs in the source cell, recovery is successful through LTM, and RLF occurs within the second time of accessing the target cell; The traditional cell change fails, but is successfully recovered through LTM, and RLF occurs within the third time of accessing the target cell.

45. The network device according to claim 41, wherein: The first information includes at least one of the following: Information related to the failure to execute LTM; Information about LTM recovery failure; Information about the time when the failure occurred; Indication of whether subsequent LTM is supported.

46. ​​The network device according to claim 45, wherein: The relevant information of the failure to execute LTM includes at least one of the following: The first indication information is used to indicate the LTM execution type; Information about LTM cell changes; Identification information of LTM candidate cells; Layer 1 measurement result information of LTM candidate cells; Layer 1 measurement configuration information of LTM candidate cells; Information about the status of the transmission configuration indication TCI activated in advance; The second indication information is used to indicate whether the execution mode of the LTM is a random access channel RACH or non-RACH; The TA value of the target cell determined by the terminal; Configuration authorization CG configuration information of the target cell; The value of the LTM timer; The time between the time when the terminal receives the LTM configuration information and the time when the LTM execution fails; The time between the moment when the terminal fails to execute the LTM and the moment when the first information is sent to the network device; Refer to configuration information; Configuration information of LTM candidate cells; The candidate cell executes the configuration information.

47. The network device according to claim 45, wherein: The relevant information of the LTM recovery failure includes at least one of the following: LTM restores the identification information of the cell; The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell; The TA value of the LTM recovery cell determined by the terminal; Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process; The fifth indication information is used to indicate whether the terminal recovers downlink synchronization of the cell with the LTM; LTM restores the CG configuration information of the cell; Refer to configuration information; LTM restores the cell configuration information; The identification information of the cell where the radio link failure occurs.

48. The network device according to claim 45, wherein: The information related to the time when the failure occurred includes at least one of the following: The time between the time when the terminal receives the LTM configuration information and the time when the RLF occurs; The time between the moment when the terminal receives the LTM configuration information and the moment when the traditional cell change fails; The time between the moment when the terminal receives the LTM configuration information and the moment when the first information is sent to the network device; The time between the time when the RLF occurs in the terminal and the time when the first information is sent to the network device; The time between the time when the terminal fails to change the traditional cell and the time when the first information is sent to the network device.

49. The network device according to claim 46, wherein: The LTM cell change information includes at least one of the following: TCI status identification information; Target configuration identification information; TA value of the target cell; Non-contention random access CFRA resource information.

50. The network device according to claim 41, wherein: The first information is recorded in one report, and / or the first information is recorded in different reports, and the different reports are associated with each other.

51. The network device according to claim 50, wherein: Different reports are related by at least one of the following: Parameters in different reports; Instructions in the report; Timestamp; Terminal identification information.

52. The network device according to claim 41, wherein: The processor is configured to read the computer program in the memory and perform the following operations: Send a request message to the terminal.

53. The network device according to claim 52, wherein: The processor is configured to read the computer program in the memory and perform the following operations: The sixth indication information sent by the receiving terminal is used to indicate that the terminal stores the first information.

54. The network device according to claim 41, wherein: The processor is configured to read the computer program in the memory and perform the following operations: Perform LTM mobility optimization according to the first information; and / or send the first information to the first node, where the first information is used by the first node to perform LTM mobility optimization according to the first information.

55. A mobility failure processing device, comprising: a recording unit, configured to record first information if a failure occurs when the mobility LTM configuration information triggered by layer 1 and / or layer 2 is configured, wherein the first information is failure information related to the LTM; The first sending unit is used to send the first information to the network device.

56. The apparatus of claim 55, wherein: The recording unit is used to implement at least one of the following: In the case of being configured with the mobility LTM configuration information triggered by layer 1 and / or layer 2, if a single failure occurs, recording the first information; In the case of being configured with layer 1 and / or layer 2 triggered mobility LTM configuration information, if continuous failures occur, the first information is recorded, and the continuous failures include at least two failures.

57. The apparatus of claim 56, wherein: The single failure includes one of the following: Failed to execute LTM; A radio link failure RLF occurs in the source cell; Failed to perform a traditional cell change.

58. The apparatus of claim 56, wherein: The consecutive failures include one of the following: Failed to execute LTM and failed to recover through LTM; RLF occurs in the source cell and recovery through LTM fails; The traditional cell change fails and the recovery via LTM fails; The LTM execution fails, but the LTM recovery succeeds, and RLF occurs within the first time of accessing the target cell; When RLF occurs in the source cell, LTM is used to recover successfully, and the second time the target cell is accessed RLF occurs within; The traditional cell change fails, but is successfully recovered through LTM, and RLF occurs within the third time of accessing the target cell.

59. The apparatus of claim 55, wherein: The first information includes at least one of the following: Information related to the failure to execute LTM; Information related to LTM recovery failure; Information about the time when the failure occurred; Indication of whether subsequent LTM is supported.

60. The apparatus of claim 59, wherein: The relevant information of the failure to execute LTM includes at least one of the following: The first indication information is used to indicate the LTM execution type; Information about LTM cell changes; Identification information of LTM candidate cells; Layer 1 measurement result information of LTM candidate cells; Layer 1 measurement configuration information of LTM candidate cells; Information about the status of the transmission configuration indication TCI activated in advance; The second indication information is used to indicate whether the execution mode of the LTM is a random access channel RACH or non-RACH; The timing advance TA value of the target cell determined by the terminal; Configuration authorization CG configuration information of the target cell; The value of the LTM timer; The time between the time when the terminal receives the LTM configuration information and the time when the LTM execution fails; The time between the moment when the terminal fails to execute the LTM and the moment when the first information is sent to the network device; Refer to configuration information; Configuration information of LTM candidate cells; The candidate cell executes the configuration information.

61. The apparatus of claim 59, wherein: The relevant information of the LTM recovery failure includes at least one of the following: LTM restores the identification information of the cell; The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell; The TA value of the LTM recovery cell determined by the terminal; Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process; The fifth indication information is used to indicate whether the terminal recovers downlink synchronization of the cell with the LTM; LTM restores the CG configuration information of the cell; Refer to configuration information; LTM restores the cell configuration information; The identification information of the cell where the radio link failure occurs.

62. The apparatus of claim 59, wherein: The information related to the time when the failure occurred includes at least one of the following: The time between the time when the terminal receives the LTM configuration information and the time when the RLF occurs; The time between the moment when the terminal receives the LTM configuration information and the moment when the traditional cell change fails; The time between the moment when the terminal receives the LTM configuration information and the moment when the first information is sent to the network device; The time between the time when the RLF occurs in the terminal and the time when the first information is sent to the network device; The time between the time when the terminal fails to change the traditional cell and the time when the first information is sent to the network device.

63. The apparatus of claim 60, wherein: The LTM cell change information includes at least one of the following: TCI status identification information; Target configuration identification information; TA value of the target cell; Non-contention random access CFRA resource information.

64. The apparatus of claim 55, wherein: The recording unit is specifically configured to perform at least one of the following: recording the first information in a report; The first information is recorded in different reports, and association relationships are established between different reports.

65. The apparatus of claim 64, wherein: The establishing of association relationships between different reports includes at least one of the following: Establish associations between different reports through parameters in different reports; Setting indication information in the report, and establishing association relationships between different reports through the indication information; Establish associations between different reports through timestamps; The association relationship between different reports is established through the terminal's identification information.

66. The apparatus of claim 55, wherein: The device also includes: A second receiving unit, configured to receive a request message sent by a network device; The first sending unit is specifically configured to send the first information to the network device according to the request message.

67. The apparatus of claim 66, further comprising: The second sending unit is used to send sixth indication information to the network device, where the sixth indication information is used to indicate that the terminal stores the first information.

68. A mobility failure processing device, comprising: A first receiving unit, configured to receive first information sent by a terminal, where the first information is recorded when the terminal is configured with LTM configuration information and a failure occurs; The first information is LTM-related failure information.

69. The apparatus of claim 68, wherein: The failure includes a single failure and / or continuous failure, and the continuous failure includes at least two failures.

70. The apparatus of claim 69, wherein: The single failure includes one of the following: Failed to execute LTM; RLF occurs in the source cell; Failed to perform a traditional cell change.

71. The apparatus of claim 69, wherein: The consecutive failures include one of the following: Failed to execute LTM and failed to recover through LTM; RLF occurs in the source cell and recovery through LTM fails; The traditional cell change fails and the recovery via LTM fails; The LTM execution fails, but the LTM recovery succeeds, and RLF occurs within the first time of accessing the target cell; RLF occurs in the source cell, recovery is successful through LTM, and RLF occurs within the second time of accessing the target cell; The traditional cell change fails, but is successfully recovered through LTM, and RLF occurs within the third time of accessing the target cell.

72. The apparatus of claim 68, wherein: The first information includes at least one of the following: Information related to the failure to execute LTM; Information about LTM recovery failure; Information about the time when the failure occurred; Indication of whether subsequent LTM is supported.

73. The apparatus of claim 72, wherein: The relevant information of the failure to execute LTM includes at least one of the following: The first indication information is used to indicate the LTM execution type; Information about LTM cell changes; Identification information of LTM candidate cells; Layer 1 measurement result information of LTM candidate cells; Layer 1 measurement configuration information of LTM candidate cells; Information about the status of the transmission configuration indication TCI activated in advance; The second indication information is used to indicate whether the execution mode of the LTM is a random access channel RACH or non-RACH; The TA value of the target cell determined by the terminal; Configuration authorization CG configuration information of the target cell; The value of the LTM timer; The time between the time when the terminal receives the LTM configuration information and the time when the LTM execution fails; The time between the moment when the terminal fails to execute the LTM and the moment when the first information is sent to the network device; Refer to configuration information; Configuration information of LTM candidate cells; The candidate cell executes the configuration information.

74. The apparatus of claim 72, wherein: The relevant information of the LTM recovery failure includes at least one of the following: LTM restores the identification information of the cell; The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell; The TA value of the LTM recovery cell determined by the terminal; Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process; The fifth indication information is used to indicate whether the terminal recovers downlink synchronization of the cell with the LTM; LTM restores the CG configuration information of the cell; Refer to configuration information; LTM restores the cell configuration information; The identification information of the cell where the radio link failure occurs.

75. The apparatus of claim 72, wherein: The information related to the time when the failure occurred includes at least one of the following: The time between the time when the terminal receives the LTM configuration information and the time when the RLF occurs; The time between the moment when the terminal receives the LTM configuration information and the moment when the traditional cell change fails; The time between the moment when the terminal receives the LTM configuration information and the moment when the first information is sent to the network device; The time between the time when the RLF occurs in the terminal and the time when the first information is sent to the network device; The time between the time when the terminal fails to change the traditional cell and the time when the first information is sent to the network device.

76. The apparatus of claim 73, wherein: The LTM cell change information includes at least one of the following: TCI status identification information; Target configuration identification information; TA value of the target cell; Non-contention random access CFRA resource information.

77. The apparatus of claim 68, wherein: The first information is recorded in one report, and / or the first information is recorded in different reports, and the different reports are associated with each other.

78. The apparatus of claim 77, wherein: Different reports are related by at least one of the following: Parameters in different reports; Instructions in the report; Timestamp; Terminal identification information.

79. The apparatus of claim 68, further comprising: The third sending unit is used to send a request message to the terminal.

80. The apparatus of claim 79, further comprising: The third receiving unit is used to receive sixth indication information sent by the terminal, where the sixth indication information is used to indicate that the terminal stores the first information.

81. The apparatus of claim 68, wherein: The device also includes: A processing unit is used to perform LTM mobility optimization according to the first information; and / or send the first information to the first node, where the first information is used by the first node to perform LTM mobility optimization according to the first information.

82. A processor-readable storage medium having a computer program stored thereon, wherein: When the computer program is executed by a processor, the computer program implements the steps of the mobility failure processing method according to any one of claims 1 to 13, or implements the steps of the mobility failure processing method according to any one of claims 14 to 27.

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