Mobility failure processing method and device, terminal and network equipment

Abstract

The invention provides a mobility failure processing method and device, a terminal and network equipment. The method comprises the following steps: under the condition that a terminal is configured with mobility LTM configuration information triggered by a layer 1 and / or a layer 2, if a failure occurs, recording first information which is LTM-related failure information; and the terminal sends the first information to a network device. In the application, when the terminal is configured with the LTM configuration information and the terminal fails, the failure information related to the LTM is recorded and reported to the network device, so that the network device or other related nodes perform mobility optimization.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a mobility failure processing method, apparatus, terminal and network equipment. Background Art

[0002] Layer 1 and / or Layer 2 triggered mobility (L1 / L2 triggered mobility, LTM) mechanism: the network device pre-configures multiple candidate cell configurations and their L1 measurement configurations for the user equipment (UE), the UE performs L1 measurement and reports based on the L1 measurement configuration configured by the network device, and the network device sends an LTM cell switch command to the UE based on the L1 measurement results reported by the UE. Further optimization is needed for the possible LTM mobility failure of the UE. Summary of the invention

[0003] The purpose of the present application 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 the terminal.

[0004] An embodiment of the present application provides a method for handling mobility failure, which is applied to a terminal. The method includes:

[0005] 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;

[0006] The terminal sends the first information to the network device.

[0007] Optionally, 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:

[0008] 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;

[0009] 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.

[0010] Optionally, the single failure includes one of the following:

[0011] Failed to execute LTM;

[0012] Radio Link Failure (RLF) occurs in the source cell;

[0013] Failed to perform a traditional cell change.

[0014] Optionally, the continuous failure includes one of the following:

[0015] Failed to execute LTM and failed to recover through LTM;

[0016] RLF occurs in the source cell and recovery through LTM fails;

[0017] The traditional cell change fails and the recovery via LTM fails;

[0018] The LTM execution fails, but the LTM recovery succeeds, and RLF occurs within the first time of accessing the target cell;

[0019] RLF occurs in the source cell, recovery is successful through LTM, and RLF occurs within the second time of accessing the target cell;

[0020] The traditional cell change fails, but is successfully recovered through LTM, and RLF occurs within the third time of accessing the target cell.

[0021] Optionally, the first information includes at least one of the following:

[0022] Information related to the failure to execute LTM;

[0023] Information about LTM recovery failure;

[0024] Information about the time when the failure occurred;

[0025] Indication of whether subsequent LTM is supported.

[0026] Optionally, the relevant information of the failure to execute LTM includes at least one of the following:

[0027] The first indication information is used to indicate the LTM execution type;

[0028] Information about LTM cell changes;

[0029] Identification information of LTM candidate cells;

[0030] Layer 1 measurement result information of LTM candidate cells;

[0031] Layer 1 measurement configuration information of LTM candidate cells;

[0032] Information on the status of the transmission configuration indicator (TCI) activated in advance;

[0033] The second indication information is used to indicate whether the execution mode of LTM is a random access channel (RACH) or a non-RACH;

[0034] The timing advance (TA) value of the target cell determined by the terminal;

[0035] Configured Grant (CG) configuration information of the target cell;

[0036] The value of the LTM timer;

[0037] The time between the time when the terminal receives the LTM configuration information and the time when the LTM execution fails;

[0038] 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;

[0039] Refer to configuration information;

[0040] Configuration information of LTM candidate cells;

[0041] The candidate cell executes the configuration information.

[0042] Optionally, the relevant information of the LTM recovery failure includes at least one of the following:

[0043] LTM restores the identification information of the cell;

[0044] The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell;

[0045] The TA value of the LTM recovery cell determined by the terminal;

[0046] Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process;

[0047] The fifth indication information is used to indicate whether the terminal recovers downlink synchronization of the cell with the LTM;

[0048] LTM restores the CG configuration information of the cell;

[0049] Refer to configuration information;

[0050] LTM restores the cell configuration information;

[0051] The identification information of the cell where the radio link failure occurs.

[0052] Optionally, the information related to the time when the failure occurred includes at least one of the following:

[0053] The time between the time when the terminal receives the LTM configuration information and the time when the RLF occurs;

[0054] The time between the moment when the terminal receives the LTM configuration information and the moment when the traditional cell change fails;

[0055] 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;

[0056] 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;

[0057] 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.

[0058] Optionally, the LTM cell change information includes at least one of the following:

[0059] TCI status identification information;

[0060] Target configuration identification information;

[0061] TA value of the target cell;

[0062] Contention Free Random Access (CFRA) resource information.

[0063] Optionally, the recorded first information includes at least one of the following:

[0064] recording the first information in a report;

[0065] The first information is recorded in different reports, and association relationships between different reports are established.

[0066] Optionally, the establishing of association relationships between different reports includes at least one of the following:

[0067] Establish associations between different reports through parameters in different reports;

[0068] Setting indication information in the report, and establishing association relationships between different reports through the indication information;

[0069] Establish associations between different reports through timestamps;

[0070] The association relationship between different reports is established through the terminal's identification information.

[0071] Optionally, the method further includes:

[0072] Receiving a request message sent by a network device;

[0073] The sending the first information to the network device includes:

[0074] The first information is sent to the network device according to the request message.

[0075] Optionally, before receiving the request message sent by the network device, the method further includes:

[0076] Send sixth indication information to the network device, where the sixth indication information is used to indicate that the terminal stores the first information.

[0077] An embodiment of the present application provides a mobility failure processing method, which is applied to a network device, including:

[0078] The network side device receives the 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.

[0079] Optionally, the failure includes a single failure and / or continuous failure, and the continuous failure includes at least two failures.

[0080] Optionally, the single failure includes one of the following:

[0081] Failed to execute LTM;

[0082] RLF occurs in the source cell;

[0083] Failed to perform a traditional cell change.

[0084] Optionally, the continuous failure includes one of the following:

[0085] Failed to execute LTM and failed to recover through LTM;

[0086] RLF occurs in the source cell and recovery through LTM fails;

[0087] The traditional cell change fails and the recovery via LTM fails;

[0088] The LTM execution fails, but the LTM recovery succeeds, and RLF occurs within the first time of accessing the target cell;

[0089] RLF occurs in the source cell, recovery is successful through LTM, and RLF occurs within the second time of accessing the target cell;

[0090] The traditional cell change fails, but is successfully recovered through LTM, and RLF occurs within the third time of accessing the target cell.

[0091] Optionally, the first information includes at least one of the following:

[0092] Information related to the failure to execute LTM;

[0093] Information about LTM recovery failure;

[0094] Information about the time when the failure occurred;

[0095] Indication of whether subsequent LTM is supported.

[0096] Optionally, the relevant information of the failure to execute LTM includes at least one of the following:

[0097] The first indication information is used to indicate the LTM execution type;

[0098] Information about LTM cell changes;

[0099] Identification information of LTM candidate cells;

[0100] Layer 1 measurement result information of LTM candidate cells;

[0101] Layer 1 measurement configuration information of LTM candidate cells;

[0102] Information about the status of the transmission configuration indication TCI activated in advance;

[0103] The second indication information is used to indicate whether the execution mode of the LTM is a random access channel RACH or non-RACH;

[0104] The TA value of the target cell determined by the terminal;

[0105] Configuration authorization CG configuration information of the target cell;

[0106] The value of the LTM timer;

[0107] The time between the time when the terminal receives the LTM configuration information and the time when the LTM execution fails;

[0108] 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;

[0109] Refer to configuration information;

[0110] Configuration information of LTM candidate cells;

[0111] The candidate cell executes the configuration information.

[0112] Optionally, the relevant information of the LTM recovery failure includes at least one of the following:

[0113] LTM restores the identification information of the cell;

[0114] The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell;

[0115] The TA value of the LTM recovery cell determined by the terminal;

[0116] Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process;

[0117] The fifth indication information is used to indicate whether the terminal recovers downlink synchronization of the cell with the LTM;

[0118] LTM restores the CG configuration information of the cell;

[0119] Refer to configuration information;

[0120] LTM restores the cell configuration information;

[0121] The identification information of the cell where the radio link failure occurs.

[0122] Optionally, the information related to the time when the failure occurred includes at least one of the following:

[0123] The time between the time when the terminal receives the LTM configuration information and the time when the RLF occurs;

[0124] The time between the moment when the terminal receives the LTM configuration information and the moment when the traditional cell change fails;

[0125] 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;

[0126] 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;

[0127] 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.

[0128] Optionally, the LTM cell change information includes at least one of the following:

[0129] TCI status identification information;

[0130] Target configuration identification information;

[0131] TA value of the target cell;

[0132] Non-contention random access CFRA resource information.

[0133] Optionally, 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.

[0134] Optionally, different reports are linked by at least one of the following:

[0135] Parameters in different reports;

[0136] Instructions in the report;

[0137] Timestamp;

[0138] Terminal identification information.

[0139] Optionally, before receiving the first information sent by the terminal, the method further includes:

[0140] Send a request message to the terminal.

[0141] Optionally, before sending the request message to the terminal, the method further includes:

[0142] The sixth indication information sent by the receiving terminal is used to indicate that the terminal stores the first information.

[0143] Optionally, the method further includes:

[0144] 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.

[0145] An embodiment of the present application provides a terminal, including: a memory, a transceiver, and a processor:

[0146] 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:

[0147] 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;

[0148] The first information is sent to a network device.

[0149] Optionally, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0150] 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;

[0151] 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.

[0152] Optionally, the single failure includes one of the following:

[0153] Failed to execute LTM;

[0154] A radio link failure RLF occurs in the source cell;

[0155] Failed to perform a traditional cell change.

[0156] Optionally, the continuous failure includes one of the following:

[0157] Failed to execute LTM and failed to recover through LTM;

[0158] RLF occurs in the source cell and recovery through LTM fails;

[0159] The traditional cell change fails and the recovery via LTM fails;

[0160] The LTM execution fails, but the LTM recovery succeeds, and RLF occurs within the first time of accessing the target cell;

[0161] RLF occurs in the source cell, recovery is successful through LTM, and RLF occurs within the second time of accessing the target cell;

[0162] The traditional cell change fails, but is successfully recovered through LTM, and RLF occurs within the third time of accessing the target cell.

[0163] Optionally, the first information includes at least one of the following:

[0164] Information related to the failure to execute LTM;

[0165] Information about LTM recovery failure;

[0166] Information about the time when the failure occurred;

[0167] Indication of whether subsequent LTM is supported.

[0168] Optionally, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0169] The first indication information is used to indicate the LTM execution type;

[0170] Information about LTM cell changes;

[0171] Identification information of LTM candidate cells;

[0172] Layer 1 measurement result information of LTM candidate cells;

[0173] Layer 1 measurement configuration information of LTM candidate cells;

[0174] Information about the status of the transmission configuration indication TCI activated in advance;

[0175] The second indication information is used to indicate whether the execution mode of the LTM is a random access channel RACH or non-RACH;

[0176] The timing advance TA value of the target cell determined by the terminal;

[0177] Configuration authorization CG configuration information of the target cell;

[0178] The value of the LTM timer;

[0179] The time between the time when the terminal receives the LTM configuration information and the time when the LTM execution fails;

[0180] 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;

[0181] Refer to configuration information;

[0182] Configuration information of LTM candidate cells;

[0183] The candidate cell executes the configuration information.

[0184] Optionally, the relevant information of the LTM recovery failure includes at least one of the following:

[0185] LTM restores the identification information of the cell;

[0186] The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell;

[0187] The TA value of the LTM recovery cell determined by the terminal;

[0188] Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process;

[0189] The fifth indication information is used to indicate whether the terminal recovers downlink synchronization of the cell with the LTM;

[0190] LTM restores the CG configuration information of the cell;

[0191] Refer to configuration information;

[0192] LTM restores the cell configuration information;

[0193] The identification information of the cell where the radio link failure occurs.

[0194] Optionally, the information related to the time when the failure occurred includes at least one of the following:

[0195] The time between the time when the terminal receives the LTM configuration information and the time when the RLF occurs;

[0196] The time between the moment when the terminal receives the LTM configuration information and the moment when the traditional cell change fails;

[0197] 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;

[0198] 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;

[0199] 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.

[0200] Optionally, the LTM cell change information includes at least one of the following:

[0201] TCI status identification information;

[0202] Target configuration identification information;

[0203] TA value of the target cell;

[0204] Non-contention random access CFRA resource information.

[0205] Optionally, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0206] recording the first information in a report;

[0207] The first information is recorded in different reports, and association relationships are established between different reports.

[0208] Optionally, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0209] Establish associations between different reports through parameters in different reports;

[0210] Setting indication information in the report, and establishing association relationships between different reports through the indication information;

[0211] Establish associations between different reports through timestamps;

[0212] The association relationship between different reports is established through the terminal's identification information.

[0213] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0214] Receiving a request message sent by a network device;

[0215] The sending the first information to the network device includes:

[0216] The first information is sent to the network device according to the request message.

[0217] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0218] Send sixth indication information to the network device, where the sixth indication information is used to indicate that the terminal stores the first information.

[0219] An embodiment of the present application provides a network device, including: a memory, a transceiver, and a processor:

[0220] 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:

[0221] 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.

[0222] Optionally, the failure includes a single failure and / or continuous failure, and the continuous failure includes at least two failures.

[0223] Optionally, the single failure includes one of the following:

[0224] Failed to execute LTM;

[0225] RLF occurs in the source cell;

[0226] Traditional cell change failed

[0227] Optionally, the continuous failure includes one of the following:

[0228] Failed to execute LTM and failed to recover through LTM;

[0229] RLF occurs in the source cell and recovery through LTM fails;

[0230] The traditional cell change fails and the recovery via LTM fails;

[0231] The LTM execution fails, but the LTM recovery succeeds, and RLF occurs within the first time of accessing the target cell;

[0232] RLF occurs in the source cell, recovery is successful through LTM, and RLF occurs within the second time of accessing the target cell;

[0233] The traditional cell change fails, but is successfully recovered through LTM, and RLF occurs within the third time of accessing the target cell.

[0234] Optionally, the first information includes at least one of the following:

[0235] Information related to the failure to execute LTM;

[0236] Information about LTM recovery failure;

[0237] Information about the time when the failure occurred;

[0238] Indication of whether subsequent LTM is supported.

[0239] Optionally, the relevant information of the failure to execute LTM includes at least one of the following:

[0240] The first indication information is used to indicate the LTM execution type;

[0241] Information about LTM cell changes;

[0242] Identification information of LTM candidate cells;

[0243] Layer 1 measurement result information of LTM candidate cells;

[0244] Layer 1 measurement configuration information of LTM candidate cells;

[0245] Information about the status of the transmission configuration indication TCI activated in advance;

[0246] The second indication information is used to indicate whether the execution mode of the LTM is a random access channel RACH or non-RACH;

[0247] The TA value of the target cell determined by the terminal;

[0248] Configuration authorization CG configuration information of the target cell;

[0249] The value of the LTM timer;

[0250] The time between the time when the terminal receives the LTM configuration information and the time when the LTM execution fails;

[0251] 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;

[0252] Refer to configuration information;

[0253] Configuration information of LTM candidate cells;

[0254] The candidate cell executes the configuration information.

[0255] Optionally, the relevant information of the LTM recovery failure includes at least one of the following:

[0256] LTM restores the identification information of the cell;

[0257] The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell;

[0258] The TA value of the LTM recovery cell determined by the terminal;

[0259] Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process;

[0260] The fifth indication information is used to indicate whether the terminal recovers downlink synchronization of the cell with the LTM;

[0261] LTM restores the CG configuration information of the cell;

[0262] Refer to configuration information;

[0263] LTM restores the cell configuration information;

[0264] The identification information of the cell where the radio link failure occurs.

[0265] Optionally, the information related to the time when the failure occurred includes at least one of the following:

[0266] The time between the time when the terminal receives the LTM configuration information and the time when the RLF occurs;

[0267] The time between the moment when the terminal receives the LTM configuration information and the moment when the traditional cell change fails;

[0268] 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;

[0269] 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;

[0270] 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.

[0271] Optionally, the LTM cell change information includes at least one of the following:

[0272] TCI status identification information;

[0273] Target configuration identification information;

[0274] TA value of the target cell;

[0275] Non-contention random access CFRA resource information.

[0276] Optionally, 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.

[0277] Optionally, different reports are linked by at least one of the following:

[0278] Parameters in different reports;

[0279] Instructions in the report;

[0280] Timestamp;

[0281] Terminal identification information.

[0282] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0283] Send a request message to the terminal.

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

[0285] The sixth indication information sent by the receiving terminal is used to indicate that the terminal stores the first information.

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

[0287] 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.

[0288] An embodiment of the present application provides a mobility failure processing device, including:

[0289] 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;

[0290] The first sending unit is used to send the first information to the network device.

[0291] An embodiment of the present application provides a mobility failure processing device, including:

[0292] The first receiving unit is used 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 failure information related to LTM.

[0293] An embodiment of the present application provides a processor-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned mobility failure processing method are implemented.

[0294] The beneficial effects of the above technical solution of the present application are:

[0295] In an embodiment of the present application, 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 can perform mobility optimization. BRIEF DESCRIPTION OF THE DRAWINGS

[0296] Figure 1 A flow chart showing a method for handling mobility failure according to an embodiment of the present application;

[0297] Figure 2 A second flowchart of the method for handling mobility failure according to an embodiment of the present application is shown;

[0298] Figure 3 A schematic diagram showing a structure of a mobility failure processing device according to an embodiment of the present application;

[0299] Figure 4 A second structural diagram showing the mobility failure processing device according to an embodiment of the present application;

[0300] Figure 5 A schematic diagram showing the structure of a terminal according to an embodiment of the present application;

[0301] Figure 6 A schematic diagram showing the structure of a network device according to an embodiment of the present application. DETAILED DESCRIPTION

[0302] In order to make the technical problems, technical solutions and advantages to be solved by the application clearer, the following will be described in detail 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 application. 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 application. In addition, for clarity and brevity, the description of known functions and structures has been omitted.

[0303] It should be understood that the references to "one embodiment" or "an embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present application. Therefore, the references to "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0304] In the various embodiments of the present application, 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 application.

[0305] In the embodiments of the present application, the term "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0306] In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0307] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0308] 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. There is currently no optimization method for the situation where the UE has an LTM mobility failure. The embodiments of the present application provide a mobility failure processing method, apparatus, terminal and network device for optimizing the problem of LTM mobility failure in the terminal.

[0309] Among them, the method and the device are based on the same application concept. Since the method and the device solve the problem in a similar principle, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0310] like Figure 1 As shown, an embodiment of the present application provides a method for handling mobility failure, which is applied to a terminal and specifically includes the following steps:

[0311] 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.

[0312] Step 102: The terminal sends the first information to a network device.

[0313] In this embodiment, the network device configures LTM configuration information for the terminal. If the terminal fails, the LTM-related failure information is recorded and reported to the network device. The network device can perform LTM mobility optimization based on the LTM-related failure information, or the network device sends the LTM-related failure information to other related nodes for LTM mobility optimization. Optionally, the terminal failure can be LTM execution failure or other failure situations.

[0314] Optionally, the LTM may be an LTM on a master cell group (MCG) side or an LTM on a secondary cell group (SCG) side.

[0315] In an embodiment of the present application, 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 can perform mobility optimization.

[0316] As an optional embodiment, 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:

[0317] (1) When the 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;

[0318] (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.

[0319] In this embodiment, the terminal may record the failure information related to the LTM in the case of a single failure, or may record the failure information related to the LTM in the case of consecutive failures. For example, the terminal may record the failure information and report it to the network device when the first failure occurs, and / or the terminal may record the failure information and report it to the network device when two or more consecutive failures occur.

[0320] Optionally, the single failure includes one of the following:

[0321] 11) Failure to execute LTM; for example: the terminal fails to execute LTM, but LTM is successfully restored or rebuilt. The terminal only fails to execute LTM once, and the terminal records and reports the failure information related to LTM.

[0322] 12) Radio link failure RLF occurs in the source cell; for example: the terminal has RLF in the source cell, but LTM recovers or reestablishes successfully, and the terminal has only experienced one RLF failure. The terminal can record and report LTM-related failure information.

[0323] 13) Failure to perform legacy cell change (legacy handover, legacy HO), for example: the terminal fails to perform legacy HO, but LTM recovers or reestablishes successfully, the terminal only has one legacy HO failure, and the terminal records and reports LTM-related failure information. The legacy cell change is for example, legacy L3 handover, legacy Primary SCG Cell (PSCell) change.

[0324] 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, and the UE directly executes the configuration information of the candidate cell for recovery, and the recovery is successful.

[0325] 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).

[0326] Optionally, the continuous failure includes one of the following:

[0327] 21) Failed to execute LTM and failed to recover through LTM (LTM recovery);

[0328] 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 to recover, and if the recovery fails, the terminal can record the first information.

[0329] 22) RLF occurs in the source cell and recovery through LTM fails;

[0330] In this embodiment, the failure to recover through LTM indicates that: after RLF occurs in the source cell, the terminal performs cell selection, the cell selected 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.

[0331] 23) Failure to perform a legacy cell change (legacy HO) and failure to recover through LTM.

[0332] In this embodiment, the failure to recover through LTM indicates that: after the legacy HO fails, the terminal performs cell selection, the cell selected 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] 24) Failure in executing LTM, success in recovering through LTM, and RLF occurs within the first time of accessing the target cell;

[0334] The first time is a shorter time, which can be a preset value. If the terminal fails to execute LTM and recovers successfully through LTM, but RLF occurs soon in the target cell, the first information can be recorded. The successful LTM recovery 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.

[0335] 25) RLF occurs in the source cell, recovery is successful through LTM, and RLF occurs within the second time of accessing the target cell;

[0336] The second time is a shorter time and may be a preset value. The second time may be the same as or different from the first time, which is not limited here. After RLF occurs in the source cell, the terminal successfully recovers through LTM, but RLF occurs in the target cell soon, and the first information may be recorded.

[0337] 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 this candidate cell for recovery, and the recovery is successful.

[0338] 26) The traditional cell change fails, but is successfully recovered through LTM, and RLF occurs within the third time of accessing the target cell.

[0339] The third time is a shorter time and may be a preset value. The third time may be the same as or different from the first time and / or the second time, and is not limited here. After the terminal executes legacy HO, it recovers successfully through LTM, but RLF soon occurs in the target cell, and the first information may 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.

[0340] As an optional embodiment, the first information includes at least one of the following:

[0341] (1) Information related to the failure to execute LTM;

[0342] Optionally, the relevant information of the failure to execute LTM includes at least one of the following:

[0343] 11) First indication information, used to indicate the LTM execution type; the first indication information may indicate that the execution type is "LTM".

[0344] 12) LTM cell switch information; Optionally, 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-competitive random access CFRA resource information.

[0345] Optionally, the TCI state may include uplink and / or downlink TCI state.

[0346] Optionally, the CFRA resource information includes at least one of the following: a random access preamble index (Random Access Preamble index), a synchronization signal (Synchronization Signal, SS) / physical broadcast channel (Physical broadcast channel, PBCH) index, an uplink carrier (such as: supplementary uplink (Supplementary Uplink, SUL) or normal uplink (Normal Uplink, NUL)), and a PRACH mask index (Mask index).

[0347] 13) Identification information of the LTM candidate cell; it can be a physical cell identifier (PCI) + frequency information, or a cell global identifier (CGI).

[0348] 14) Layer 1 measurement result information of the LTM candidate cell; it may be L1 reference signal received power (Layer 1 reference signal received power, L1-RSRP) information, etc.;

[0349] 15) Layer 1 measurement configuration information of the LTM candidate cell; it may be information such as synchronization signal block (SSB) frequency, subcarrier spacing, SSB period, etc.

[0350] 16) Information of the transmission configuration indication TCI state (state(s)) activated in advance; the TCI state may include uplink and / or downlink TCI state. The TCI state activated in advance is the TCI state activated by the terminal based on the command of the network device (such as MAC CE) before receiving the LTM command, or the activated TCI state sent by the network device through MAC CE before the terminal receives the LTM command.

[0351] 17) Second indication information, 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.

[0352] 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;

[0353] 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 for the UE to send UL data when accessing the target cell in RACH-less mode;

[0354] 110) The value of the LTM timer; for example, the T304 value.

[0355] 111) The time between the moment when the terminal receives the LTM configuration information and the moment when the LTM execution fails; the time unit can be milliseconds, seconds, minutes, hours, etc., which is not limited here.

[0356] 112) The time from the moment when the terminal fails to execute LTM to 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.

[0357] 113), reference configuration information, which is sent by the network device to the UE. The configuration information of all incompletely configured LTM candidate cells is common configuration information. The UE applies the configuration information of the LTM candidate cells based on the reference configuration information to generate a complete configuration;

[0358] 114), configuration information of LTM candidate cells. Each candidate cell is associated with a piece of 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.

[0359] 115) The candidate cell executes configuration information.

[0360] 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).

[0361] (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 occurs in the target cell soon.

[0362] Optionally, the relevant information of the LTM recovery failure includes at least one of the following:

[0363] LTM restores the identification information of the cell; it can be the physical cell identifier (PCI) + frequency, or CGI.

[0364] 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;

[0365] The TA value of the LTM recovery cell determined by the terminal; it 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;

[0366] Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH (RACH-less) process;

[0367] The fifth indication information is used to indicate whether the terminal is synchronized with the LTM recovery cell downlink; the relevant information of the LTM recovery failure may include the indication information of whether the UE has been synchronized with the LTM recovery cell downlink;

[0368] 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, and this CG configuration information is used for the UE to send UL data when accessing the recovery cell in RACH-less mode;

[0369] Refer to configuration information;

[0370] 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.

[0371] The identification information of the cell where the radio link failure occurs may be for a situation 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.

[0372] (3) Information related to the time when the failure occurred;

[0373] Optionally, the information related to the time when the failure occurred includes at least one of the following:

[0374] The time between the time when the terminal receives the LTM configuration information and the time when the RLF occurs;

[0375] The time between the moment when the terminal receives the LTM configuration information and the moment when the legacy cell change (legacy HO) fails;

[0376] 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;

[0377] 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;

[0378] 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.

[0379] (4) Indication information of whether to support subsequent LTM. This indication information is used to indicate whether the UE will execute subsequent LTM. Subsequent LTM means that after the UE executes 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 cellswitch.

[0380] As an optional embodiment, the recording of the first information includes at least one of the following:

[0381] recording the first information in a report;

[0382] The first information is recorded in different reports, and association relationships are established between different reports.

[0383] In this embodiment, the terminal records the first information in one report or in different reports. For a single failure, the terminal records the first information in one report.

[0384] 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 a newly introduced report. The other existing reports include, for example, a connection establishment failure (CEF) report, a random access report (RACH report), a successful handover report (SHR), and the like.

[0385] Optionally, the establishing of association relationships between different reports includes at least one of the following:

[0386] Through the parameters in different reports, the association relationship between different reports is established. For example, two reports can include the same parameter. If the value of this parameter is the same, the two reports are related reports. If the parameter values ​​are different, they are unrelated reports.

[0387] Setting indication information in the report, and establishing associations between different reports through the indication information, for example: adding an indication information in report A to indicate that report A has a related report B, and / or adding an indication information in report B to indicate that report B has a related report A;

[0388] 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;

[0389] An association relationship between different reports is established through the identification information of the terminal, for example: through the Cell Radio Network Temporary Identifier (C-RNTI) to associate, 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 the UE in the source cell or both are C-RNTIs of the UE in the target cell), so 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 different, Report A and Report B are unrelated reports.

[0390] 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: associating with parameters in multiple reports; associating by introducing indication information in the report; associating with timestamps; associating with terminal identification information.

[0391] As an optional embodiment, the method further includes:

[0392] Receiving a request message sent by a network device;

[0393] The sending the first information to the network device includes:

[0394] The first information is sent to the network device according to the request message.

[0395] Optionally, before receiving the request message sent by the network device, the method further includes:

[0396] Send sixth indication information to the network device, where the sixth indication information is used to indicate that the terminal stores the first information.

[0397] 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 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 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.

[0398] 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, wherein the interface signaling may be Xn, X2, E1, or F1 interface signaling.

[0399] The following example illustrates the implementation process of the mobility failure processing method.

[0400] Specifically, they include:

[0401] Step (1): UE fails continuously.

[0402] When the UE is configured with LTM configuration information, the UE executes LTM, and scenarios in which the terminal fails to send continuously may include one or more of the following scenarios:

[0403] Scenario 1: UE fails to execute LTM and fails to recover through LTM;

[0404] Scenario 2: UE experiences RLF in the source cell and fails to recover through LTM;

[0405] Scenario 3: The UE fails to perform legacy HO and fails to recover through LTM.

[0406] Scenario 4: The UE fails to perform LTM and succeeds through LTM recovery, but RLF soon occurs in the target cell;

[0407] Scenario 5: The UE experiences RLF in the source cell and succeeds in LTM recovery, but soon experiences RLF in the target cell;

[0408] Scenario 6: The UE fails to perform legacy HO and succeeds through LTM recovery, but RLF soon occurs in the target cell;

[0409] In addition, continuous LTM failures can also be the following scenarios:

[0410] Scenario 7: The UE fails to perform LTM, succeeds through LTM recovery, and RLF occurs in the target cell after a period of time;

[0411] Scenario 8: The UE has RLF in the source cell, and LTM recovery succeeds. After a period of time, RLF occurs in the target cell.

[0412] Scenario 9: The UE fails to perform legacy HO, succeeds through LTM recovery, and RLF occurs in the target cell after a period of time.

[0413] Step (2): The UE records the first information.

[0414] When the 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:

[0415] a) Information related to the failure of the first LTM execution;

[0416] b) Information related to the failure of the second LTM recovery;

[0417] c) Information related to the failure of the third LTM recovery;

[0418] d) Fourth other LTM failure related information.

[0419] The information related to the above-mentioned a) first LTM execution failure may include one or more of the following information:

[0420] a1: LTM execution type indication information, that is, the type is "LTM";

[0421] The LTM execution type indication information may be 1-bit indication information, indicating that the most recently executed switching type is "LTM".

[0422] a2: information in LTM cell switch (one or more);

[0423] 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 by means of 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.

[0424] a3: Identification information of each LTM candidate cell.

[0425] The identification information of each candidate LTM cell may be a physical cell id (PCI) + frequency information, or a CGI.

[0426] The identification information of each candidate cell of this LTM can be reported in the following ways:

[0427] Method 1: candidate cell identification information list, that is, all candidate cell identification information is put into a list, and each entry in the list is the identification information of a candidate cell;

[0428] Mode 2: Indication information in L3 neighbor cell measurement, that is, in the neighbor cell measurement result report, for each neighbor cell, an indication information is added to indicate whether the neighbor cell is an LTM candidate cell; in addition, for LTM candidate cells that are not in the L3 neighbor cell measurement, they are recorded in the same way as Mode 1, that is, in the form of a list;

[0429] Method 3: Acquire the candidate cell identification information through L1 measurement result reporting or L1 measurement configuration information.

[0430] a4: L1 measurement result information of each candidate cell of LTM. The L1 measurement result information of each candidate cell of LTM may be L1 reference signal received power (Layer 1 reference signal received power, L1-RSRP) information and the like.

[0431] a5: Layer 1 measurement configuration information of LTM candidate cells.

[0432] 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.

[0433] a6: Information of TCI state(s) activated in advance.

[0434] The information of the pre-activated TCI state(s) is the information of the pre-activated TCI state(s) sent by the network device through a Medium Access Control (MAC) control element (CE).

[0435] 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;

[0436] a8: Timing advance TA value of the target cell determined by the UE. It can be the TA value of the target cell calculated by the UE itself.

[0437] a9: CG configuration information of the target cell. It 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.

[0438] a10: LTM timer value (such as T304 value).

[0439] a11: The time from when the UE receives the LTM configuration information to when the LTM execution fails.

[0440] a12: The time from the failure of UE to execute LTM to the reporting of the first information.

[0441] a13: Refer to the configuration information.

[0442] 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 is necessary 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.

[0443] a14: Configuration information of LTM candidate cells.

[0444] a15: candidate cell execution configuration information.

[0445] In this embodiment, the above-mentioned information related to the failure to execute LTM may be information that needs to be recorded and reported for the first LTM execution failure. The first LTM execution failure related information may be recorded and reported when the failure occurs for the first time in scenarios 7 to 9 in step (1), or recorded and reported when a single LTM execution fails. For example, if LTM execution fails, but LTM recovery succeeds, and there is no subsequent failure in the target cell, the above-mentioned information may be recorded and reported.

[0446] Regarding the above b) information related to the failure of the second LTM recovery, it may include one or more of the following information (mainly for the information that needs to be recorded and reported during the LTM recovery process):

[0447] b1: LTM recovery cell identification information;

[0448] 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 identification (such as LTM CellId) 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.

[0449] 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.

[0450] b3: TA value of the LTM recovery cell determined by the UE. It 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.

[0451] 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 the RACH mode or the RACH-less mode during the LTM recovery process.

[0452] 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.

[0453] b6: CG configuration of LTM recovery cell;

[0454] It can be the CG configuration pre-configured by the network device for the LTM recovery cell, which is 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.

[0455] 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.

[0456] 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).

[0457] The above c) third LTM recovery failure related information may include one or more of the following information (mainly for the information that needs to be recorded and reported when RLF occurs in the target cell within a short time after LTM recovery is successful):

[0458] c1: information related to the failure of the second LTM recovery;

[0459] c2: failed cell identification information; refers to the identification information of the failed target cell where RLF occurs within a short period of time after the UE successfully performs LTM recovery. It can be PCI+frequency or CGI.

[0460] The fourth other LTM failure related information mentioned above (d) may include one or more of the following information (other information that needs to be recorded and reported in addition to the above three types of information):

[0461] d1: the time from receiving the LTM configuration to the occurrence of RLF / legacy HO failure;

[0462] d2: the time from receiving the LTM configuration to reporting the first information;

[0463] d3: time from the occurrence of RLF / legacy HO failure to the reporting of the first information;

[0464] d4: Indication information of whether to support subsequent LTM; this indication information indicates whether the network device configures the UE to execute subsequent LTM.

[0465] Optionally, the recording method of the first information may include:

[0466] The first information may be recorded in one or more of the following reports:

[0467] RLF report (report);

[0468] Use other existing reports; for example, it may be a Connection Establishment Failure (CEF) report, a Random Access Report (RACH report), a Successful Handover Report (SHR) and the like.

[0469] Introducing new reports.

[0470] When the contents of the first information are recorded in two or more reports, they can be associated in one or more of the following ways:

[0471] Method a: Associate with parameters in multiple reports;

[0472] For example, if there is a same parameter in multiple reports, the same reference can be used for association. When the network device receives these reports and finds that the parameter values ​​in these reports are the same, the network device considers that these reports are associated with the same LTM switch. Otherwise, the network device considers that these reports are not associated.

[0473] Method b: Introduce indication information in the report for association.

[0474] 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.

[0475] In addition, you can also consider giving each report generated by this LTM execution a unique number, and when reporting the report, you will report the number of this report and the numbers of the associated reports. After the network receives this report, it will know which reports are associated with this report.

[0476] Method c: Associate by timestamp.

[0477] 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 they are reports related to the same LTM switch; otherwise, it indicates that there is no correlation between these reports.

[0478] Method d: associate with terminal identification information.

[0479] Taking the Cell Radio Network Temporary Identifier (C-RNTI) of the source cell as an example, if multiple reports store the C-RNTI information of the source cell executed by this LTM, 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 switch. If they are not the same, it indicates that they are not reports related to the same LTM switch, that is, there is no correlation between the reports.

[0480] Step (3): UE reports the first information.

[0481] When the UE generates the first information, the UE may send an available indication information 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 completion message, an RRC connection establishment completion message, an RRC connection recovery completion message, and an RRC connection reestablishment completion message. The indication information may be 1-bit indication information.

[0482] When the network device receives the available 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 directly send a request message to the UE to request the UE to report the first information without being based on the available indication information, that is, the UE may not report the available indication information to the device.

[0483] 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.

[0484] The above-mentioned network device request and UE response may be sent using a UE information request / response message pair.

[0485] Step (4): Network optimization.

[0486] 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 the 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.

[0487] 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 of the continuous LTM failure.

[0488] In an embodiment of the present application, 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 can perform mobility optimization.

[0489] like Figure 2 As shown, the embodiment of the present application also provides a mobility failure processing method, which is applied to a network device, including:

[0490] Step 201: A network-side device receives 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.

[0491] In this embodiment, the network device configures LTM configuration information for the terminal. If a failure occurs in the terminal, the failure information related to the LTM is recorded and reported to the network device.

[0492] Optionally, the method further includes:

[0493] 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.

[0494] In this embodiment, the network device can perform LTM mobility optimization according to the failure information related to the LTM, or the network device sends the failure information related to the LTM to other related nodes for LTM mobility optimization. Optionally, the failure of the terminal can be LTM execution failure or other failure situations. The first node is a node related to the first information.

[0495] Optionally, the failure includes a single failure and / or continuous failure, and the continuous failure includes at least two failures.

[0496] In this embodiment, the terminal may record the failure information related to the LTM in the case of a single failure, or may record the failure information related to the LTM in the case of consecutive failures. For example, the terminal may record the failure information and report it to the network device when the first failure occurs, and / or the terminal may record the failure information and report it to the network device when two or more consecutive failures occur.

[0497] Optionally, the single failure includes one of the following:

[0498] Failed to execute LTM;

[0499] RLF occurs in the source cell;

[0500] Failed to perform a traditional cell change.

[0501] Optionally, the continuous failure includes one of the following:

[0502] Failed to execute LTM and failed to recover through LTM;

[0503] RLF occurs in the source cell and recovery through LTM fails;

[0504] The traditional cell change fails and the recovery via LTM fails;

[0505] The LTM execution fails, but the LTM recovery succeeds, and RLF occurs within the first time of accessing the target cell;

[0506] RLF occurs in the source cell, recovery is successful through LTM, and RLF occurs within the second time of accessing the target cell;

[0507] The traditional cell change fails, but is successfully recovered through LTM, and RLF occurs within the third time of accessing the target cell.

[0508] Optionally, the first information includes at least one of the following:

[0509] (1) Information related to the failure to execute LTM;

[0510] Optionally, the relevant information of the failure to execute LTM includes at least one of the following:

[0511] The first indication information is used to indicate the LTM execution type;

[0512] Information about LTM cell changes;

[0513] Identification information of LTM candidate cells;

[0514] Layer 1 measurement result information of LTM candidate cells;

[0515] Layer 1 measurement configuration information of LTM candidate cells;

[0516] Information about the status of the transmission configuration indication TCI activated in advance;

[0517] The second indication information is used to indicate whether the execution mode of the LTM is a random access channel RACH or non-RACH;

[0518] The TA value of the target cell determined by the terminal;

[0519] Configuration authorization CG configuration information of the target cell;

[0520] The value of the LTM timer;

[0521] The time between the time when the terminal receives the LTM configuration information and the time when the LTM execution fails;

[0522] 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;

[0523] Refer to configuration information;

[0524] Configuration information of LTM candidate cells;

[0525] The candidate cell executes the configuration information.

[0526] (2) Information related to LTM recovery failure.

[0527] Optionally, the relevant information of the LTM recovery failure includes at least one of the following:

[0528] LTM restores the identification information of the cell;

[0529] The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell;

[0530] 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.

[0531] Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process;

[0532] The fifth indication information is used to indicate whether the terminal recovers downlink synchronization of the cell with the LTM;

[0533] LTM restores the CG configuration information of the cell;

[0534] Refer to configuration information;

[0535] LTM restores the cell configuration information;

[0536] The identification information of the cell where the radio link failure occurs.

[0537] (3) Information related to the time when the failure occurred.

[0538] The information related to the time when the failure occurred includes at least one of the following:

[0539] The time between the time when the terminal receives the LTM configuration information and the time when the RLF occurs;

[0540] The time between the moment when the terminal receives the LTM configuration information and the moment when the traditional cell change fails;

[0541] 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;

[0542] 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;

[0543] 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.

[0544] (4) Whether the subsequent LTM indication information is supported.

[0545] Optionally, the LTM cell change information includes at least one of the following:

[0546] TCI status identification information;

[0547] Target configuration identification information;

[0548] TA value of the target cell;

[0549] Non-contention random access CFRA resource information.

[0550] 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.

[0551] In this embodiment, the terminal records the first information in one report or in different reports. For a single failure, the terminal records the first information in one report.

[0552] 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 a newly introduced report. The other existing reports may be, for example, a CEF report, a RACH report, and a SHR.

[0553] Optionally, different reports are linked by at least one of the following:

[0554] Parameters in different reports; for example, two reports can include the same parameter. If the parameter value is the same, then the reports are related; if the parameter value is different, then the reports are unrelated;

[0555] Indication information in a report; for example, adding an indication information to report A to indicate that report A has a related report B, and / or adding an indication information to report B to indicate that report B has a related report A;

[0556] Timestamp; that is, introduce timestamp information in multiple reports. If the timestamp information in multiple reports is the same or similar, they are related reports;

[0557] Terminal identification information. For example, through the Cell Radio Network Temporary Identifier (C-RNTI), the C-RNTI 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 related reports. If they are different, they are unrelated reports.

[0558] As an optional embodiment, before receiving the first information sent by the terminal, the method further includes: sending a request message to the terminal.

[0559] Optionally, before sending the request message to the terminal, the method further includes:

[0560] The sixth indication information sent by the receiving terminal is used to indicate that the terminal stores the first information.

[0561] In this embodiment, the terminal reports the first information by: 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.

[0562] 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. , wherein the interface signaling may be Xn, X2, E1, or F1 interface signaling.

[0563] In an embodiment of the present application, 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. 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 in turn perform mobility optimization.

[0564] The above embodiment introduces the method for handling mobility failure of the present application. The following embodiment will further illustrate the corresponding device in conjunction with the accompanying drawings.

[0565] Specifically, Figure 3As shown, the embodiment of the present application provides a mobility failure processing device 300, which is applied to a terminal, including:

[0566] The recording unit 310 is 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;

[0567] The first sending unit 320 is configured to send the first information to a network device.

[0568] Optionally, the recording unit is used to implement at least one of the following:

[0569] 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;

[0570] 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.

[0571] Optionally, the single failure includes one of the following:

[0572] Failed to execute LTM;

[0573] A radio link failure RLF occurs in the source cell;

[0574] Failed to perform a traditional cell change.

[0575] Optionally, the continuous failure includes one of the following:

[0576] Failed to execute LTM and failed to recover through LTM;

[0577] RLF occurs in the source cell and recovery through LTM fails;

[0578] The traditional cell change fails and the recovery via LTM fails;

[0579] The LTM execution fails, but the LTM recovery succeeds, and RLF occurs within the first time of accessing the target cell;

[0580] RLF occurs in the source cell, recovery is successful through LTM, and RLF occurs within the second time of accessing the target cell;

[0581] The traditional cell change fails, but is successfully recovered through LTM, and RLF occurs within the third time of accessing the target cell.

[0582] Optionally, the first information includes at least one of the following:

[0583] Information related to the failure to execute LTM;

[0584] Information related to LTM recovery failure;

[0585] Information about the time when the failure occurred;

[0586] Indication of whether subsequent LTM is supported.

[0587] Optionally, the relevant information of the failure to execute LTM includes at least one of the following:

[0588] The first indication information is used to indicate the LTM execution type;

[0589] Information about LTM cell changes;

[0590] Identification information of LTM candidate cells;

[0591] Layer 1 measurement result information of LTM candidate cells;

[0592] Layer 1 measurement configuration information of LTM candidate cells;

[0593] Information about the status of the transmission configuration indication TCI activated in advance;

[0594] The second indication information is used to indicate whether the execution mode of the LTM is a random access channel RACH or non-RACH;

[0595] The timing advance TA value of the target cell determined by the terminal;

[0596] Configuration authorization CG configuration information of the target cell;

[0597] The value of the LTM timer;

[0598] The time between the time when the terminal receives the LTM configuration information and the time when the LTM execution fails;

[0599] 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;

[0600] Refer to configuration information;

[0601] Configuration information of LTM candidate cells;

[0602] The candidate cell executes the configuration information.

[0603] Optionally, the relevant information of the LTM recovery failure includes at least one of the following:

[0604] LTM restores the identification information of the cell;

[0605] The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell;

[0606] The TA value of the LTM recovery cell determined by the terminal;

[0607] Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process;

[0608] The fifth indication information is used to indicate whether the terminal recovers downlink synchronization of the cell with the LTM;

[0609] LTM restores the CG configuration information of the cell;

[0610] Refer to configuration information;

[0611] LTM restores the cell configuration information;

[0612] The identification information of the cell where the radio link failure occurs.

[0613] Optionally, the information related to the time when the failure occurred includes at least one of the following:

[0614] The time between the time when the terminal receives the LTM configuration information and the time when the RLF occurs;

[0615] The time between the moment when the terminal receives the LTM configuration information and the moment when the traditional cell change fails;

[0616] 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;

[0617] 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;

[0618] 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.

[0619] Optionally, the LTM cell change information includes at least one of the following:

[0620] TCI status identification information;

[0621] Target configuration identification information;

[0622] TA value of the target cell;

[0623] Non-contention random access CFRA resource information.

[0624] Optionally, the recording unit is specifically configured to perform at least one of the following:

[0625] recording the first information in a report;

[0626] The first information is recorded in different reports, and association relationships between different reports are established.

[0627] Optionally, the establishing of association relationships between different reports includes at least one of the following:

[0628] Establish associations between different reports through parameters in different reports;

[0629] Setting indication information in the report, and establishing association relationships between different reports through the indication information;

[0630] Establish associations between different reports through timestamps;

[0631] The association relationship between different reports is established through the terminal's identification information.

[0632] Optionally, the device further comprises:

[0633] A second receiving unit, configured to receive a request message sent by a network device;

[0634] The first sending unit is specifically configured to send the first information to the network device according to the request message.

[0635] Optionally, the device further comprises:

[0636] 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.

[0637] It should be noted here that the above-mentioned device provided in the embodiment of the present application 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.

[0638] Specifically, Figure 4 As shown, the embodiment of the present application provides a mobility failure processing device 400, which is applied to a network device, including:

[0639] The first receiving unit 410 is used 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.

[0640] Optionally, the failure includes a single failure and / or continuous failure, and the continuous failure includes at least two failures.

[0641] Optionally, the single failure includes one of the following:

[0642] Failed to execute LTM;

[0643] RLF occurs in the source cell;

[0644] Failed to perform a traditional cell change.

[0645] Optionally, the continuous failure includes one of the following:

[0646] Failed to execute LTM and failed to recover through LTM;

[0647] RLF occurs in the source cell and recovery through LTM fails;

[0648] The traditional cell change fails and the recovery via LTM fails;

[0649] The LTM execution fails, but the LTM recovery succeeds, and RLF occurs within the first time of accessing the target cell;

[0650] RLF occurs in the source cell, recovery is successful through LTM, and RLF occurs within the second time of accessing the target cell;

[0651] The traditional cell change fails, but is successfully recovered through LTM, and RLF occurs within the third time of accessing the target cell.

[0652] Optionally, the first information includes at least one of the following:

[0653] Information related to the failure to execute LTM;

[0654] Information about LTM recovery failure;

[0655] Information about the time when the failure occurred;

[0656] Indication of whether subsequent LTM is supported.

[0657] Optionally, the relevant information of the failure to execute LTM includes at least one of the following:

[0658] The first indication information is used to indicate the LTM execution type;

[0659] Information about LTM cell changes;

[0660] Identification information of LTM candidate cells;

[0661] Layer 1 measurement result information of LTM candidate cells;

[0662] Layer 1 measurement configuration information of LTM candidate cells;

[0663] Information about the status of the transmission configuration indication TCI activated in advance;

[0664] The second indication information is used to indicate whether the execution mode of the LTM is a random access channel RACH or non-RACH;

[0665] The TA value of the target cell determined by the terminal;

[0666] Configuration authorization CG configuration information of the target cell;

[0667] The value of the LTM timer;

[0668] The time between the time when the terminal receives the LTM configuration information and the time when the LTM execution fails;

[0669] 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;

[0670] Refer to configuration information;

[0671] Configuration information of LTM candidate cells;

[0672] The candidate cell executes the configuration information.

[0673] Optionally, the relevant information of the LTM recovery failure includes at least one of the following:

[0674] LTM restores the identification information of the cell;

[0675] The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell;

[0676] The TA value of the LTM recovery cell determined by the terminal;

[0677] Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process;

[0678] The fifth indication information is used to indicate whether the terminal recovers downlink synchronization of the cell with the LTM;

[0679] LTM restores the CG configuration information of the cell;

[0680] Refer to configuration information;

[0681] LTM restores the cell configuration information;

[0682] The identification information of the cell where the radio link failure occurs.

[0683] Optionally, the information related to the time when the failure occurred includes at least one of the following:

[0684] The time between the time when the terminal receives the LTM configuration information and the time when the RLF occurs;

[0685] The time between the moment when the terminal receives the LTM configuration information and the moment when the traditional cell change fails;

[0686] 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;

[0687] 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;

[0688] 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.

[0689] Optionally, the LTM cell change information includes at least one of the following:

[0690] TCI status identification information;

[0691] Target configuration identification information;

[0692] TA value of the target cell;

[0693] Non-contention random access CFRA resource information.

[0694] Optionally, 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.

[0695] Optionally, different reports are linked by at least one of the following:

[0696] Parameters in different reports;

[0697] Instructions in the report;

[0698] Timestamp;

[0699] Terminal identification information.

[0700] Optionally, the device further comprises:

[0701] The third sending unit is used to send a request message to the terminal.

[0702] Optionally, the device further comprises:

[0703] 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.

[0704] Optionally, the device further comprises:

[0705] 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.

[0706] It should be noted here that the above-mentioned device provided in the embodiment of the present application 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.

[0707] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0708] 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 application 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 to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0709] like Figure 5 As shown, an embodiment of the present application 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; the processor 510 is used to read the computer program in the memory and perform the following operations:

[0710] 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;

[0711] The first information is sent to a network device.

[0712] Optionally, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0713] 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;

[0714] 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.

[0715] Optionally, the single failure includes one of the following:

[0716] Failed to execute LTM;

[0717] A radio link failure RLF occurs in the source cell;

[0718] Failed to perform a traditional cell change.

[0719] Optionally, the continuous failure includes one of the following:

[0720] Failed to execute LTM and failed to recover through LTM;

[0721] RLF occurs in the source cell and recovery through LTM fails;

[0722] The traditional cell change fails and the recovery via LTM fails;

[0723] The LTM execution fails, but the LTM recovery succeeds, and RLF occurs within the first time of accessing the target cell;

[0724] RLF occurs in the source cell, recovery is successful through LTM, and RLF occurs within the second time of accessing the target cell;

[0725] The traditional cell change fails, but is successfully recovered through LTM, and RLF occurs within the third time of accessing the target cell.

[0726] Optionally, the first information includes at least one of the following:

[0727] Information related to the failure to execute LTM;

[0728] Information about LTM recovery failure;

[0729] Information about the time when the failure occurred;

[0730] Indication of whether subsequent LTM is supported.

[0731] Optionally, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0732] The first indication information is used to indicate the LTM execution type;

[0733] Information about LTM cell changes;

[0734] Identification information of LTM candidate cells;

[0735] Layer 1 measurement result information of LTM candidate cells;

[0736] Layer 1 measurement configuration information of LTM candidate cells;

[0737] Information about the status of the transmission configuration indication TCI activated in advance;

[0738] The second indication information is used to indicate whether the execution mode of the LTM is a random access channel RACH or non-RACH;

[0739] The timing advance TA value of the target cell determined by the terminal;

[0740] Configuration authorization CG configuration information of the target cell;

[0741] The value of the LTM timer;

[0742] The time between the time when the terminal receives the LTM configuration information and the time when the LTM execution fails;

[0743] 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;

[0744] Refer to configuration information;

[0745] Configuration information of LTM candidate cells;

[0746] The candidate cell executes the configuration information.

[0747] Optionally, the relevant information of the LTM recovery failure includes at least one of the following:

[0748] LTM restores the identification information of the cell;

[0749] The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell;

[0750] The TA value of the LTM recovery cell determined by the terminal;

[0751] Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process;

[0752] The fifth indication information is used to indicate whether the terminal recovers downlink synchronization of the cell with the LTM;

[0753] LTM restores the CG configuration information of the cell;

[0754] Refer to configuration information;

[0755] LTM restores the cell configuration information;

[0756] The identification information of the cell where the radio link failure occurs.

[0757] Optionally, the information related to the time when the failure occurred includes at least one of the following:

[0758] The time between the time when the terminal receives the LTM configuration information and the time when the RLF occurs;

[0759] The time between the moment when the terminal receives the LTM configuration information and the moment when the traditional cell change fails;

[0760] 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;

[0761] 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;

[0762] 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.

[0763] Optionally, the LTM cell change information includes at least one of the following:

[0764] TCI status identification information;

[0765] Target configuration identification information;

[0766] TA value of the target cell;

[0767] Non-contention random access CFRA resource information.

[0768] Optionally, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0769] recording the first information in a report;

[0770] The first information is recorded in different reports, and association relationships are established between different reports.

[0771] Optionally, the processor is configured to read the computer program in the memory and perform at least one of the following operations:

[0772] Establish associations between different reports through parameters in different reports;

[0773] Setting indication information in the report, and establishing association relationships between different reports through the indication information;

[0774] Establish associations between different reports through timestamps;

[0775] The association relationship between different reports is established through the terminal's identification information.

[0776] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0777] Receiving a request message sent by a network device;

[0778] The sending the first information to the network device includes:

[0779] The first information is sent to the network device according to the request message.

[0780] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0781] Send sixth indication information to the network device, where the sixth indication information is used to indicate that the terminal stores the first information.

[0782] Among them, Figure 5 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 510 and various circuits of memory represented by memory 520 are linked together. The bus architecture may also link together various other circuits such as peripherals, 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, namely, 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 externally and internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0783] 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.

[0784] Optionally, 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), and the processor may also adopt a multi-core architecture.

[0785] The processor calls the computer program stored in the memory to execute any of the methods provided in the embodiments of the present application according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

[0786] It should be noted here that the above-mentioned terminal provided in the embodiment of the present application can implement all the method steps implemented by 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.

[0787] like Figure 6 As shown, an embodiment of the present application 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; the processor 610 is used to read the computer program in the memory and perform the following operations:

[0788] 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.

[0789] Optionally, the failure includes a single failure and / or continuous failure, and the continuous failure includes at least two failures.

[0790] Optionally, the single failure includes one of the following:

[0791] Failed to execute LTM;

[0792] RLF occurs in the source cell;

[0793] Failed to perform traditional cell change

[0794] Optionally, the continuous failure includes one of the following:

[0795] Failed to execute LTM and failed to recover through LTM;

[0796] RLF occurs in the source cell and recovery through LTM fails;

[0797] The traditional cell change fails and the recovery via LTM fails;

[0798] The LTM execution fails, but the LTM recovery succeeds, and RLF occurs within the first time of accessing the target cell;

[0799] RLF occurs in the source cell, recovery is successful through LTM, and RLF occurs within the second time of accessing the target cell;

[0800] The traditional cell change fails, but is successfully recovered through LTM, and RLF occurs within the third time of accessing the target cell.

[0801] Optionally, the first information includes at least one of the following:

[0802] Information related to the failure to execute LTM;

[0803] Information about LTM recovery failure;

[0804] Information about the time when the failure occurred;

[0805] Indication of whether subsequent LTM is supported.

[0806] Optionally, the relevant information of the failure to execute LTM includes at least one of the following:

[0807] The first indication information is used to indicate the LTM execution type;

[0808] Information about LTM cell changes;

[0809] Identification information of LTM candidate cells;

[0810] Layer 1 measurement result information of LTM candidate cells;

[0811] Layer 1 measurement configuration information of LTM candidate cells;

[0812] Information about the status of the transmission configuration indication TCI activated in advance;

[0813] The second indication information is used to indicate whether the execution mode of the LTM is a random access channel RACH or non-RACH;

[0814] The TA value of the target cell determined by the terminal;

[0815] Configuration authorization CG configuration information of the target cell;

[0816] The value of the LTM timer;

[0817] The time between the time when the terminal receives the LTM configuration information and the time when the LTM execution fails;

[0818] 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;

[0819] Refer to configuration information;

[0820] Configuration information of LTM candidate cells;

[0821] The candidate cell executes the configuration information.

[0822] Optionally, the relevant information of the LTM recovery failure includes at least one of the following:

[0823] LTM restores the identification information of the cell;

[0824] The third indication information is used to indicate whether the terminal obtains the TA value of the LTM recovery cell;

[0825] The TA value of the LTM recovery cell determined by the terminal;

[0826] Fourth indication information, used to indicate whether the LTM recovery process is a RACH process or a non-RACH process;

[0827] The fifth indication information is used to indicate whether the terminal recovers downlink synchronization of the cell with the LTM;

[0828] LTM restores the CG configuration information of the cell;

[0829] Refer to configuration information;

[0830] LTM restores the cell configuration information;

[0831] The identification information of the cell where the radio link failure occurs.

[0832] Optionally, the information related to the time when the failure occurred includes at least one of the following:

[0833] The time between the time when the terminal receives the LTM configuration information and the time when the RLF occurs;

[0834] The time between the moment when the terminal receives the LTM configuration information and the moment when the traditional cell change fails;

[0835] 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;

[0836] 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;

[0837] 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.

[0838] Optionally, the LTM cell change information includes at least one of the following:

[0839] TCI status identification information;

[0840] Target configuration identification information;

[0841] TA value of the target cell;

[0842] Non-contention random access CFRA resource information.

[0843] Optionally, 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.

[0844] Optionally, different reports are linked by at least one of the following:

[0845] Parameters in different reports;

[0846] Instructions in the report;

[0847] Timestamp;

[0848] Terminal identification information.

[0849] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0850] Send a request message to the terminal.

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

[0852] The sixth indication information sent by the receiving terminal is used to indicate that the terminal stores the first information.

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

[0854] 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.

[0855] Among them, Figure 6In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 610 and memory represented by memory 620. The bus architecture may also link various other circuits such as peripherals, 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 600 may be a plurality of components, namely, a transmitter and a transceiver, providing a unit for communicating with various other devices on 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.

[0856] 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.

[0857] It should be noted here that the above-mentioned network device provided in the embodiment of the present application can implement all the method steps implemented by the above-mentioned method embodiment applied to the network device, and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0858] In addition, a specific embodiment of the present application further provides a processor-readable storage medium on which a computer program is stored, wherein the program, when executed by the processor, implements the steps of the above-mentioned mobility failure processing method and can achieve the same technical effect. To avoid repetition, it is not repeated here. 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), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)), etc.

[0859] It should be noted that the technical solution provided in the embodiment of the present application can be applicable to a variety of systems, especially 5G systems. For example, the applicable system can be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, a long term evolution (LTE) system, a LTE frequency division duplex (FDD) system, a LTE time division duplex (TDD) system, an advanced long term evolution (LTE-A) system, a universal mobile telecommunication system (UMTS), a world-wide interoperability for microwave access (WiMAX) system, a 5G new radio (NR) system, etc. These various systems include terminal equipment and network equipment. The system may also include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), etc.

[0860] The terminal device involved in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device with a 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 a 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 a "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 language and / or data with a wireless 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, and a user device, but is not limited in the embodiments of the present application.

[0861] The network device involved in the embodiment of the present application may be a base station, which may include multiple cells providing services for the terminal. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, and serve 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 application may be a network device (Base Transceiver Station, BTS) in the Global System for Mobile communications (Global System for Mobile communications, GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA), or a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolutionary network device (evolutional Node B, eNB or e-NodeB) in the long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), or a home evolved Node B (Home evolved Node B, HeNB), a relay node, a home base station (femto), a pico base station (pico), etc., which is not limited in the embodiments of the present application. 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 arranged geographically separately.

[0862] 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 form and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO or massive-MIMO, or it can be diversity transmission, precoded transmission or beamforming transmission, etc.

[0863] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0864] The present application is described with reference to the flowchart and / or block diagram of the method, device (system) and computer program product according to the embodiment of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, and the combination of the process and / or box 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 a process or multiple processes in the flowchart and / or a box or multiple boxes in the block diagram.

[0865] 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.

[0866] 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 performed 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.

[0867] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A method for handling mobility failure, It is characterized in that include: 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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.

6. The method according to claim 5, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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.

12. The method according to claim 1, It is characterized in that The method further comprises: 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, It is characterized in that 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, It is characterized in that include: 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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 according to claim 14, It is characterized in that 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, It is characterized in that 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 according to claim 14, It is characterized in that The method further comprises: 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.

28. A terminal, It is characterized in that include: 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that The processor is configured to read the computer program in the memory and perform at least one of the following operations: 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, It is characterized in that 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, It is characterized in that 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.

36. The terminal according to claim 33, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that include: 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: 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, It is characterized in that The failure includes a single failure and / or consecutive failures, and the consecutive failure includes at least two failures.

43. The network device according to claim 42, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that 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, It is characterized in that include: 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. A mobility failure processing device, It is characterized in that include: 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.

57. A processor-readable storage medium having a computer program stored thereon, It is characterized in that 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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