Information processing method, and terminal and network-side device

Abstract

Provided in the present disclosure are an information processing method, and a terminal and a network-side device. The information processing method provided in the embodiments of the present invention comprises: when first configuration information is stored and a mobility failure and / or a critical failure occurs, recording first failure-related information and / or first success-related information; and sending the first failure-related information and / or the first success-related information to a network-side device, wherein the first configuration information comprises configuration information of one or more candidate cells, and at least one candidate cell is configured with an execution condition for cell change.

Description

Information processing methods, terminals and network-side equipment

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 2025100719465, filed on January 16, 2025, entitled "Information Processing Method, Terminal and Network Side Device", the entirety of which is incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of wireless communication technology, and in particular to an information processing method, a terminal, and a network-side device. Background Technology

[0004] Related technologies are discussing L1 / L2 triggered mobility (LTM), which supports configuring LTM candidate cells and their execution conditions (e.g., L1 or L3 execution conditions) for terminals. After receiving the configuration, the terminal evaluates the execution conditions, and when the conditions are met, the terminal accesses the corresponding target cell. Mobility optimization has been discussed for non-conditional LTM, but not for conditional LTM. The industry urgently needs solutions for mobility optimization of conditional LTM. Summary of the Invention

[0005] This disclosure provides an information processing method, a terminal, and a network-side device.

[0006] In a first aspect, this disclosure provides an information processing method applied to a terminal, the method comprising:

[0007] In the event of a mobility failure and / or critical failure, the system records first failure-related information and / or first success-related information, where first configuration information is stored and mobility failure and / or critical failure occur. The first configuration information includes configuration information for one or more candidate cells, and at least one candidate cell is configured with conditions for cell change execution.

[0008] Send the first failure-related information and / or the first success-related information to the network-side device.

[0009] Secondly, this disclosure also provides an information processing method applied to a network-side device, the method comprising:

[0010] The receiving terminal sends the first failure-related information and / or the first success-related information.

[0011] The first failure-related information and / or the first success-related information are recorded by the terminal when it stores the first configuration information and a mobility failure and / or critical failure occurs; the first configuration information includes the configuration information of one or more candidate cells, and at least one candidate cell is configured with the execution conditions for cell change.

[0012] Thirdly, this disclosure also provides an information processing method applied to a network device, comprising:

[0013] The terminal receives a first report and / or a secondary cell group failure information message (SCGFailureInformation), searches for first configuration information in the terminal's context information, wherein the first report includes one or more of a radio link failure report (RLF report), a successful handover report (SHR), and a successful secondary cell group primary cell addition or change report (SPR); the first configuration information is recorded in the terminal's context information and is at least one of LTM configuration information and subsequent CPAC configuration information.

[0014] Based on at least one of the received first report, the secondary cell group failure information message SCGFailureInformation, and the found first configuration information, failure and / or critical failure optimization is performed.

[0015] Fourthly, this disclosure also provides a terminal, including a memory, a transceiver, and a processor;

[0016] A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations:

[0017] In the event of a mobility failure and / or critical failure, the system records first failure-related information and / or first success-related information, where first configuration information is stored and mobility failure and / or critical failure occur. The first configuration information includes configuration information for one or more candidate cells, and at least one candidate cell is configured with conditions for cell change execution.

[0018] Send the first failure-related information and / or the first success-related information to the network-side device.

[0019] Fifthly, this disclosure also provides a network-side device, including a memory, a transceiver, and a processor;

[0020] A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations:

[0021] receive the first failure-related information and / or the first success-related information sent by the terminal;

[0022] The first failure-related information and / or the first success-related information are recorded by the terminal in the case of storing the first configuration information and occurrence of mobility failure and / or critical failure; the first configuration information includes configuration information of one or more candidate cells, and at least one candidate cell is configured with an execution condition of cell change.

[0023] In a sixth aspect, the present disclosure further provides a network side device, comprising a memory, a transceiver, and a processor;

[0024] The memory is configured to store a computer program; the transceiver is configured to transceive data under the control of the processor; and the processor is configured to read the computer program in the memory and perform the following operations:

[0025] receive a first report and / or a secondary cell group failure information message (SCGFailureInformation message), and find first configuration information in the context information of the terminal, wherein the first report includes one or more of a radio link failure report (RLF report), a successful handover report (SHR), and a successful secondary cell group primary cell addition or change report (SPR); and the first configuration information is at least one of LTM configuration information and subsequent CPAC configuration information recorded in the context information of the terminal;

[0026] based on at least one of the received first report, the secondary cell group failure information message (SCGFailureInformation message), and the found first configuration information, perform failure and / or critical failure optimization.

[0027] In a seventh aspect, the present disclosure further provides a terminal, comprising:

[0028] a first recording module configured to record first failure-related information and / or first success-related information in the case of storing first configuration information and occurrence of mobility failure and / or critical failure; the first configuration information includes configuration information of one or more candidate cells, and at least one candidate cell is configured with an execution condition of cell change;

[0029] a first sending module configured to send the first failure-related information and / or the first success-related information to a network side device.

[0030] In an eighth aspect, the present disclosure further provides a network side device, comprising:

[0031] a first receiving module configured to receive first failure-related information and / or first success-related information sent by a terminal.

[0032] The first failure-related information and / or the first success-related information are recorded by the terminal when it stores the first configuration information and a mobility failure and / or critical failure occurs; the first configuration information includes the configuration information of one or more candidate cells, and at least one candidate cell is configured with the execution conditions for cell change.

[0033] Ninthly, this disclosure also provides a network-side device, including:

[0034] The second receiving module is configured to receive a first report and / or a secondary cell group failure information message (SCGFailureInformation), and search for first configuration information in the terminal's context information. The first report includes one or more of a radio link failure report (RLF report), a successful handover report (SHR), and a successful secondary cell group primary cell addition or change report (SPR). The first configuration information is recorded in the terminal's context information and is at least one of LTM configuration information and subsequent CPAC configuration information.

[0035] The optimization module performs failure and / or critical failure optimization based on at least one of the received first report, the secondary cell group failure information message SCGFailureInformation, and the found first configuration information.

[0036] In a tenth aspect, this disclosure also provides a non-transitory readable storage medium storing a program for causing a processor to execute the information processing method described in the first aspect, or the information processing method described in the second aspect, or the information processing method described in the third aspect.

[0037] Eleventhly, this disclosure also provides a processor-readable storage medium storing a program for causing a processor to perform the information processing method described in the first aspect, or the information processing method described in the second aspect, or the information processing method described in the third aspect.

[0038] In a twelfth aspect, this disclosure also provides a chip product storing a program for causing the chip product to perform the information processing method described in the first aspect, or the information processing method described in the second aspect, or the information processing method described in the third aspect.

[0039] The information processing method, terminal, and network-side device disclosed herein include the following steps: In the event of a mobility failure and / or critical failure, where first configuration information is stored, recording first failure-related information and / or first success-related information, and sending the first failure-related information and / or first success-related information to the network-side device. The first configuration information includes configuration information for one or more candidate cells, and at least one candidate cell is configured with cell change execution conditions. In this embodiment of the invention, when a mobility failure and / or critical failure occurs, the terminal records first failure-related information and / or first success-related information, and achieves network optimization by sending the recorded first failure-related information and / or first success-related information to the network-side device. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments or related technologies of this disclosure, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 is a schematic flowchart of an information processing method provided in an embodiment of this disclosure.

[0042] Figure 2 is a second schematic diagram of the information processing method provided in the embodiments of this disclosure.

[0043] Figure 3 is a schematic diagram of the information processing method provided in the embodiments of this disclosure.

[0044] Figure 4 is one of the structural schematic diagrams of the terminal provided in the embodiments of this disclosure.

[0045] Figure 5 is one of the structural schematic diagrams of the network-side device provided in the embodiments of this disclosure.

[0046] Figure 6 is a second schematic diagram of the structure of the network-side device provided in the embodiments of this disclosure.

[0047] Figure 7 is a second schematic diagram of the structure of the terminal provided in the embodiments of this disclosure.

[0048] Figure 8 is a third schematic diagram of the network-side device provided in the embodiments of this disclosure.

[0049] Figure 9 is a fourth schematic diagram of the network-side device provided in the embodiments of this disclosure. Detailed Implementation

[0050] In this disclosure, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0051] In this disclosure, the term "multiple" refers to two or more, and other quantifiers are similar.

[0052] In the embodiments of this disclosure, the terms "first," "second," etc., are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this disclosure can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, and the number of objects is not limited; for example, the first object can be one or more.

[0053] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this disclosure.

[0054] To better understand the technical content of the various embodiments of this disclosure, the relevant technologies are first introduced as follows.

[0055] (a) Conditional LTM

[0056] Related technologies introduce an LTM (Low-Terminal Measurement) mechanism. The network pre-configures multiple candidate cell configurations and their L1 measurement configurations for the User Equipment (UE). The UE performs L1 measurements based on the network-configured L1 measurement settings and reports the results. The network then sends an LTM cell switch command to the UE based on the reported L1 measurement results. This LTM cell switch command is sent to the UE via a Medium Access Control (MAC) Element (MAC CE). When the UE receives the LTM cell switch command from the network, it executes the LTM cell switch to access the target cell. The UE maintains its LTM configuration and continues L1 measurements, continuing the subsequent LTM process.

[0057] Related technologies enhance unconditional LTM by introducing conditional LTM. In addition to configuring multiple LTM candidate cells and their L1 measurement configurations for the UE, the supporting network also supports configuring corresponding execution conditions for each LTM candidate cell. These execution conditions can be L1 execution conditions (evaluated based on L1 beam measurement results) or L3 execution conditions (evaluated based on L3 cell measurement results, similar to Conditional Handover (CHO) execution conditions). When the UE receives the conditional LTM configuration from the network, it evaluates the LTM candidate cells according to the network configuration. If the evaluation execution conditions are met, the UE accesses the corresponding target cell. The UE maintains the LTM configuration and can continue to perform L1 measurements and / or execution condition evaluations based on the configuration to continue the subsequent LTM process. In these related technologies, conditional LTM only supports conditional intra-CU LTM.

[0058] (2) subsequent CPAC

[0059] Among related technologies, CPAC (conditional PSCell addition / change) is supported. This involves the network pre-configuring multiple candidate cell configurations (candidate PSCell configurations) and their corresponding execution conditions for the UE. The UE evaluates the candidate cells based on the network configuration. If the evaluation execution conditions are met, the UE accesses the corresponding target cell. Once the UE successfully accesses the target cell, it deletes the CPAC configuration.

[0060] To avoid frequent CPAC configuration on the air interface, it is supported that the UE does not release the CPAC configuration after successful CPAC execution. That is, the UE continues to maintain the CPAC configuration for subsequent CPAC evaluation and execution. In other words, the relevant technology supports subsequent CPAC.

[0061] (III) Relevant reports or news

[0062] Radio Link Failure (RLF) report: This report is used to record information related to radio link failure or handover failure on the Master Cell Group (MCG) side. This report is not reported in real time, and the UE can store it for 48 hours.

[0063] Successful Handover Report (SHR): This report records information related to successful handover (but critical failure) on the MCG side. This report is not reported immediately and can be stored by the UE for 48 hours.

[0064] Secondary Cell Group Failure Information Message: This message is used to report information related to radio link failure or PSCell addition / change failure on the Secondary Cell Group (SCG) side. This message is reported immediately.

[0065] Successful PSCell Addition or Change Report (SPR): This report records information related to successful PSCell additions / changes (but critical failures) on the SCG side. This report is not submitted immediately; the UE can store it for 48 hours.

[0066] The embodiments of this disclosure address the deficiency that mobility optimization does not support optimization of conditional LTM, resulting in the network being unable to perform condition-related optimizations if a UE is configured with conditional LTM but experiences a failure and / or critical failure, such as due to inappropriate execution conditions configured on the network side. To address this deficiency, a solution is provided. For example, the network-side device configures conditional LTM for the terminal. When the terminal experiences a mobility failure and / or critical failure, the terminal records first failure-related information (information on the failure record) and / or first success-related information (information on the critical failure record). The terminal reports the recorded first failure-related information and / or first success-related information to the network for network optimization of conditional LTM. The embodiments of this invention support the optimization of conditional LTM mobility failures and / or critical failures through a conditional mobility optimization method.

[0067] Figure 1 is a schematic flowchart of an information processing method provided in an embodiment of this disclosure. The method can be applied to a terminal. As shown in Figure 1, the method includes the following steps 101 and 102.

[0068] Step 101: In the case of storing the first configuration information and a mobility failure and / or critical failure, record the first failure-related information and / or the first success-related information;

[0069] Step 102: Send the first failure-related information and / or the first success-related information to the network-side device.

[0070] The information processing method provided in this embodiment of the invention allows a terminal to record first failure-related information and / or first success-related information when mobility failure and / or critical failure occur. The recorded first failure-related information and / or first success-related information are then sent to a network-side device for network optimization, such as optimizing conditional LTM mobility or subsequent CPAC mobility.

[0071] In some embodiments, the terminal stores first configuration information, and in the event of a mobility failure and / or a critical failure, the terminal may record first failure-related information and / or first success-related information. Specifically, in the event of a UE mobility failure, first failure-related information may be recorded; in the event of a UE critical failure, first success-related information may be recorded.

[0072] In some embodiments, a single cell change process may result in both success and failure reports being generated. For example, if the UE successfully performs an LTM or subsequent CPAC cell change, and the triggering condition for recording a success report is met, the UE will record a success report and record the first success-related information in the success report. If the UE successfully accesses the target cell and then experiences an RLF in the target cell within a short period of time, the UE will record a failure report and record the first failure-related information in the failure report. The terminal can record both the first failure-related information and the first success-related information for a single cell change, and the first failure-related information and the first success-related information can be recorded in different reports.

[0073] In some embodiments, the first failure-related information may be failure-related information recorded when a failure is determined to have occurred, and the first success-related information may be success-related information recorded when a critical failure is determined to have occurred. Here, critical failure can be understood as a situation where cell change is successfully executed, but a critical failure occurs.

[0074] In some embodiments, the first configuration information can be used for continuous or discontinuous cell changes. The first configuration information includes configuration information for one or more candidate cells, and at least one candidate cell is configured with cell change execution conditions. Specifically, the first configuration information stored by the terminal may have been previously sent by the network-side device and stored locally on the terminal, and the first configuration information may include configuration information for one or more candidate cells, with at least one candidate cell configured with cell change execution conditions.

[0075] After the terminal records the first failure information and / or the first success information, it can send the recorded information to the network-side device for optimization processes.

[0076] In some embodiments, information related to the first failure can be recorded in an RLF report or an SCGFailureInformation message, while information related to the first success can be recorded in an SHR or SPR.

[0077] The information processing method provided in this embodiment of the invention allows a terminal to record first failure-related information and / or first success-related information when mobility failure and / or critical failure occur. The recorded first failure-related information and / or first success-related information are then sent to a network-side device for network optimization, such as optimizing conditional LTM mobility or subsequent CPAC mobility.

[0078] In some embodiments, the first configuration information is mobility LTM configuration information triggered by Layer 1L1 or Layer 2L2, and the LTM configuration information includes any one or a combination of the following:

[0079] Conditional LTM configuration based on L1 measurement (L1-based conditional LTM configuration, with L1 execution conditions);

[0080] Conditional LTM configuration based on layer 3 (L3-based conditional LTM configuration execution conditions are L3 execution conditions);

[0081] L1-based measurement-based unconditional LTM configuration (L1-based LTM configuration, unconditional LTM execution);

[0082] L3-based unconditional LTM configuration (L3-based LTM configuration, unconditional LTM execution).

[0083] In the embodiments of this disclosure, unconditional LTM execution is network-triggered LTM execution.

[0084] The L1 execution condition can be understood as an evaluation based on L1 beam measurement results. That is, the terminal needs to evaluate based on the L1 measurement results of the serving cell's beam (which can be the beam corresponding to the indicated TCI state, or the beam with the highest signal quality, etc.) and the candidate beam (the candidate beam of the candidate cell). The L3 execution condition is an evaluation based on L3 cell measurement results. That is, the UE needs to evaluate based on the cell measurement results of the serving cell and the candidate cell. The L1 execution conditions can be events such as (LTM) event A3, (LTM) event A4, and (LTM) event A5, where (LTM) event A3 is when the candidate cell beam signal quality becomes better than the serving cell beam signal quality by an offset; (LTM) event A4 is when the candidate cell beam signal quality becomes better than an absolute threshold; and (LTM) event A5 is when the serving cell beam signal quality becomes worse than an absolute threshold, and the candidate cell beam signal quality becomes better than another absolute threshold. The L3 execution conditions can be events such as (CHO or LTM) event A3, (CHO or LTM) event A4, and (CHO or LTM) event A5, where (CHO or LTM) event A3 is when the candidate cell signal quality becomes better than the serving cell signal quality by an offset; (CHO or LTM) event A4 is when the candidate cell signal quality becomes better than an absolute threshold; and (CHO or LTM) event A5 is when the serving cell signal quality becomes worse than an absolute threshold, and the candidate cell signal quality becomes better than another absolute threshold.

[0085] Among them, the unconditional LTM configuration based on L1 or L3 measurements does not have the execution condition configuration and is the way the network triggers cell change execution.

[0086] When the quality of the candidate beam signal is better than the quality of the serving beam signal by a certain offset value (LTM-event A3) or the quality of the serving beam signal is lower than an absolute threshold and the quality of the candidate beam signal is better than an absolute threshold (LTM-event A5), the terminal can determine that the LTM execution conditions are met.

[0087] In this embodiment of the invention, unless otherwise specified, the execution condition type can be considered to refer to either L1 execution condition, L3 execution condition, or both.

[0088] The above information can be configured together or separately, depending on actual needs.

[0089] In some embodiments, a failure may include one or more of the following mobility failures:

[0090] The terminal experiences a radio link failure (RLF) in the source cell;

[0091] The terminal attempted to execute conditional LTM, but the execution failed.

[0092] The terminal attempted to perform an unconditional LTM, but the execution failed.

[0093] The terminal successfully performed conditional LTM, but an RLF occurred in the target cell; specifically, the terminal successfully performed conditional LTM, but an RLF occurred in the target cell shortly thereafter.

[0094] The terminal successfully performed unconditional LTM, but an RLF (Recovery Risk Failure) occurred in the target cell. Specifically, the terminal successfully performed unconditional LTM, but an RLF occurred in the target cell shortly afterward.

[0095] From the terminal's perspective, it is only necessary to detect whether an RLF occurs in the target cell. At this time, the target cell is also the source cell for the next cell change. In the short term, the network-side device makes the judgment based on the time information reported by the UE (such as the time interval between executing the cell change and the failure).

[0096] Unconditional LTM can be understood as the network not configuring execution conditions for LTM candidate cells, and the network sending a MAC CE command to trigger the UE to execute LTM.

[0097] In some embodiments, the UE successfully performs conditional LTM, but a critical failure occurs. A mobility critical failure includes one or more of the following:

[0098] If the time alignment timer (TAT) corresponding to the time alignment (TA) value of the target cell sent by the network-side device exceeds a first preset threshold, the network-side device configures a first preset threshold for the terminal before the terminal performs conditional LTM. This first preset threshold is used by the terminal to determine whether the TAT corresponding to the TA value of the target cell exceeds this threshold when performing conditional LTM, so as to determine whether to record the first success information. This threshold can be configured for each (conditional) LTM candidate cell, or for all (conditional) LTM candidate cells.

[0099] When the TAT corresponding to the TA value of the target cell sent by the network-side equipment times out, the terminal performs RACH-less access based on the TA value measured by the terminal (UE-based TA).

[0100] When the TAT timeout corresponding to the TA value of the target cell sent by the network-side device, the terminal performs RACH-based access.

[0101] The terminal accesses an LTM candidate cell based on a network command. The LTM candidate cell is configured with execution conditions, but the execution conditions are not met.

[0102] The network-side equipment provides TA values ​​for non-target LTM candidate cells, but does not provide TA values ​​for target cells;

[0103] For L1 execution condition evaluation, during the TTT operation, if the service beam is changed, the L1 execution condition is met, triggering LTM execution and LTM execution is successful. This triggering condition can also be used for unconditional LTM. That is, for L1 execution condition evaluation, during the TTT operation, if the service beam is changed, unconditional LTM execution is received, and LTM execution is successful, it can also be used as the triggering condition for recording the first success information.

[0104] The T310 timer of the source cell has exceeded the second preset threshold, which can be configured by the network.

[0105] The T312 timer of the source cell has exceeded the third preset threshold, which can be configured by the network.

[0106] The T304 timer of the target cell has exceeded the fourth preset threshold, which can be configured by the network.

[0107] In some embodiments, if the terminal experiences one or more of the following critical failure scenarios, the first success-related information is recorded:

[0108] The terminal execution condition LTM succeeded, but a critical failure occurred;

[0109] The terminal successfully executed the unconditional LTM, but a critical failure occurred.

[0110] In some embodiments, the first failure-related information and / or the first success-related information include any one or a combination of the following:

[0111] Execution condition information;

[0112] Time-related information;

[0113] Beam-related information;

[0114] The first indication information indicates that the current or most recent handover type is conditional LTM; this first indication information indicates that the most recent / current handover type is conditional LTM. For example: ENUMERATED{X,X,conditional LTM}.

[0115] L1 measurement results information for conditional LTM candidate cells or candidate beams.

[0116] L3 measurement results information for candidate cells or candidate beams in conditional LTM.

[0117] This refers to the L3 / L1 measurement results of each candidate cell or candidate beam in conditional LTM.

[0118] L1 measurement results information for the serving cell, target cell, or neighboring cells;

[0119] L3 measurement results information for the serving cell, target cell, or neighboring cells;

[0120] This refers to the L1 / L3 measurement results information of the serving cell, target cell, or neighboring cells. For example, L1 measurement results include L1-RSRP, L1-RSRQ, and L1-SINR; L3 measurement results are beam-level measurement results such as L3-RSRP, L3-RSRQ, and L3-SINR, or cell-level measurement results such as cell-level RSRP, cell-level RSRQ, and cell-level SINR.

[0121] The received conditional LTM candidate cell or candidate beam or target cell or target beam TA value is the TA value sent by the network side to the terminal for each candidate cell. If the TA values ​​of multiple candidate cells are recorded, a list can be recorded per candidate cell. This list includes a candidate cell identifier or configuration identifier and the TA value provided by the network for this candidate cell. This is just an example and does not limit the specific recording method.

[0122] The cause value for triggering a successful cell change report record indicates the reason for triggering the first successful information related to the record.

[0123] Specifically, this cause indicates the reason that triggered the recording of the first success information (i.e., which triggering condition was met).

[0124] For example: a casue indication, this cause indication is used to indicate the first success-related information record (SHR record or SPR record) triggered because the TAT corresponding to the TA value of the target cell sent by the network exceeds a threshold;

[0125] A casue indication, this cause indication is used to indicate the first success-related information record (SHR record or SPR record) triggered by the terminal performing RACH-less access based on UE-based TA due to the TAT timeout corresponding to the TA value of the target cell sent by the network;

[0126] A cause indication is used to indicate the first success-related information record (SHR record or SPR record) triggered by the terminal performing RACH-based access due to the timeout of the TAT corresponding to the TA value of the target cell sent by the network.

[0127] A casue indication. This cause indication is used to indicate the first success-related information record (SHR record or SPR record) triggered when the terminal accesses an LTM candidate cell based on network indication, and the LTM candidate cell has configured execution conditions for this cell change, but the execution conditions are not met.

[0128] A casue indication, this cause indication is used to indicate the first success-related information record (SHR record or SPR record) triggered because the network provided TA values ​​for other LTM candidate cells but did not provide TA values ​​for the target cell;

[0129] A cause indicator is used to indicate the first success-related information record (SHR record or SPR record) triggered due to the change of service beam during the TTT operation, which was met due to the evaluation of the L1 execution conditions.

[0130] The beam measurement results or cell measurement results mentioned above can be the most recently obtained measurement results, the measurement results when LTM is executed, or the measurement results when LTM is triggered.

[0131] In some embodiments, the above information can be recorded as either the previous information or the current information. The previous information is the information before LTM is executed, such as the TA value of the conditional LTM candidate cell before LTM is executed. The current information refers to the information after LTM is executed, such as the TA value of the conditional LTM candidate cell after LTM is executed.

[0132] The relevant information mentioned above will be introduced below.

[0133] In some embodiments, execution condition-related information includes any one or a combination of the following:

[0134] The second indication information is used to indicate whether the neighboring cell or LTM candidate cell is configured with LTM execution conditions.

[0135] A first list of conditional LTM candidate cells and / or execution conditions;

[0136] The third indication information is used to indicate the type of LTM execution conditions;

[0137] A second list of LTM candidate cells and / or execution conditions configured for each LTM candidate cell when the LTM candidate cell is the serving cell;

[0138] A third list of conditional LTM candidate cells and / or execution conditions when the source cell is the serving cell;

[0139] A fourth list of conditional LTM candidate cells and / or execution conditions when the target cell is the serving cell;

[0140] For a conditional LTM candidate cell, the first L1 or L3 execution condition that is met;

[0141] For a conditional LTM candidate cell, the time interval between two satisfied L1 or L3 execution conditions;

[0142] The fourth indication information, for a conditional LTM candidate cell, is used to indicate that the L3 execution conditions configured for the conditional LTM candidate cell are the execution conditions of conditional handover CHO, or the execution conditions of LTM, or the execution conditions that include both conditional handover CHO and LTM.

[0143] Specifically:

[0144] The second indication information indicates whether the neighboring cell or LTM candidate cell is configured with LTM execution conditions. Taking a neighboring cell as an example, this second indication information can be sent to the network side explicitly or implicitly. If explicit, 1 bit can be used, where 1 indicates that the neighboring cell is configured with LTM execution conditions, and 0 indicates that the neighboring cell is not configured with LTM execution conditions. If implicit, the indication can be implicitly sent by recording the LTM execution conditions. For example, if LTM execution conditions are recorded for a neighboring cell, it means that the neighboring cell is configured with LTM execution conditions; if LTM execution conditions are not recorded for a neighboring cell, it means that the neighboring cell is not configured with LTM execution conditions. Other implicit methods are also possible and are not limited here. In addition, the execution conditions indicated by this second indication information are for the current serving cell, and it is determined whether each neighboring cell is configured with LTM execution conditions.

[0145] For example, the network side configures candidate cells 1 to 6 (all neighboring cells) for the terminal, and the current serving cell is 0. The current serving cell has execution conditions configured for candidate cells 1 to 6, candidate cell 1 has execution conditions configured for candidate cells 2 to 6, candidate cell 2 has execution conditions configured for candidate cells 1 and candidate cells 3 to 6, and so on. Since the terminal is currently connected to serving cell 0, and serving cell 0 is serving the terminal, and because serving cell 0 has execution conditions configured for candidate cells 1 to 6, the second indication information should indicate that neighboring cells 1 to 6 are configured with LTM execution conditions. When the terminal performs a cell change and connects to candidate cell 5, which is the current serving cell, and because candidate cell 5 has configured execution conditions for candidate cells 1 to 4 and candidate cell 6 for the terminal, the second indication information should indicate that neighboring cells 1 to 4 and neighboring cell 6 are configured with LTM execution conditions.

[0146] Taking an LTM candidate cell as an example, this second indication information indicates whether the LTM candidate cell is configured with LTM execution conditions. This second indication information is used when a neighboring cell has already been designated as an LTM candidate cell (explicitly or implicitly). For this LTM candidate cell, it can further indicate whether the LTM candidate cell is configured with LTM execution conditions. This second indication information can be sent to the network explicitly or implicitly. For explicit indication, 1 bit can be used, where 1 indicates that the LTM candidate cell is configured with LTM execution conditions, and 0 indicates that the LTM candidate cell is not configured with LTM execution conditions. For implicit indication, the indication can be implicitly shown by recording the LTM execution conditions. For example, if LTM execution conditions are recorded for an LTM candidate cell, it means that the LTM candidate cell is configured with LTM execution conditions; if LTM execution conditions are not recorded for an LTM candidate cell, it means that the LTM candidate cell is not configured with LTM execution conditions. Other implicit methods are also possible and are not limited here. Furthermore, the execution conditions indicated by this information are specific to the current serving cell, and it specifies whether each LTM candidate cell is configured with LTM execution conditions.

[0147] For example, the network side configures LTM candidate cells 1-6 for the terminal, the current serving cell is 0, the current serving cell has execution conditions configured for candidate cells 1-6, candidate cell 1 has execution conditions configured for candidate cells 2-6, candidate cell 2 has execution conditions configured for candidate cells 1 and candidate cells 3-6, and so on. Since the terminal is currently connected to serving cell 0, and serving cell 0 is serving the terminal, because serving cell 0 has execution conditions configured for candidate cells 1-6, this indication information should indicate that candidate cells 1-6 are configured with LTM execution conditions. When the terminal performs a cell change and connects to candidate cell 5, which is the current serving cell, because candidate cell 5 has configured execution conditions for candidate cells 1-4 and candidate cell 6 for the UE, this indication information should indicate that candidate cells 1-4 and candidate cell 6 are configured with LTM execution conditions.

[0148] A first list of conditional LTM candidate cells and / or execution conditions: a list of LTM candidate cells and / or execution conditions configured with execution conditions; embodiments of the present invention may introduce a list to record LTM candidate cells and / or execution conditions configured with execution conditions. Each entry in the list may include candidate cell identification information (such as frequency point + PCI or CGI), or include a configuration identifier (this configuration identifier is the index of this LTM candidate cell configuration in the entire LTM candidate cell configuration), or may include the execution conditions configured for each conditional LTM candidate cell. Furthermore, the LTM candidate cells configured with execution conditions in this list are each LTM candidate cell configured with execution conditions for the current serving cell.

[0149] For example: The network side configures LTM candidate cells 1-6 for the terminal, and the current serving cell is 0. The current serving cell has execution conditions configured for candidate cells 1-6. Candidate cell 1 has execution conditions configured for candidate cells 2-6, candidate cell 2 has execution conditions configured for candidate cells 1 and candidate cells 3-6, and so on. Since the terminal is currently connected to serving cell 0, and serving cell 0 is serving the terminal, because serving cell 0 has execution conditions configured for candidate cells 1-6, the list of LTM candidate cells with execution conditions should include candidate cells 1-6 (cell identification information and / or execution conditions for candidate cells 1-6). When the terminal performs a cell change and connects to candidate cell 5, which is the current serving cell, because candidate cell 5 has execution conditions configured for candidate cells 1-4 and candidate cell 6, the list of LTM candidate cells with execution conditions should also include candidate cells 1-4 and candidate cell 6 (cell identification information and / or execution conditions for candidate cells 1-4 and candidate cell 6).

[0150] The third indication information indicates the type of LTM execution condition (L1 or L3). This third indication information is used to indicate whether the execution condition configured for this LTM candidate cell is an L1 or L3 execution condition. This third indication information can be sent to the network explicitly or implicitly. For example, in the explicit method, 1 bit can be used, where 0 represents an L1 execution condition and 1 represents an L3 execution condition. In the implicit method, the indication can be implicitly indicated by recording the LTM execution condition. For example, if an L1 execution condition is recorded for a neighboring cell or LTM candidate cell, it means that this neighboring cell or LTM candidate cell is configured with an L1 execution condition. If an L3 execution condition is recorded for a neighboring cell or LTM candidate cell, it means that this neighboring cell or LTM candidate cell is configured with an L3 execution condition. Other implicit methods are also possible and are not limited here.

[0151] The second list contains a list of other conditional LTM candidate cells and / or execution conditions configured for each conditional LTM candidate cell when it becomes the serving cell. Considering that conditional LTM can perform subsequent conditional LTM, when configuring execution conditions, a candidate cell can configure execution conditions for other candidate cells. These execution conditions are used to evaluate other candidate cells and initiate the next handover when this candidate cell becomes the serving cell. The term "handover" here can also be replaced with "mobility," "PSCell addition / change," or "cell change," etc.

[0152] For example, the network side configures candidates 1 to 6 for the UE. Candidate cells 1 to 6 are all configured with L1 execution conditions. Candidate cells 1 to 6 also need to configure execution conditions for other candidate cells separately. For instance, candidate cell 1 needs to configure execution conditions for candidate cells 2 to 6, candidate cell 2 needs to configure execution conditions for candidate cell 1 and candidate cells 3 to 6, and so on. The purpose is to evaluate the execution conditions of candidate cells 2 to 6 when the terminal accesses candidate cell 1, for use in the next cell change. Therefore, this records the other candidate cells and / or execution conditions configured for this candidate cell when it is the serving cell. For example, for candidate cell 1, it records candidate cells 2 to 6 (cell identification information and / or execution conditions for candidate cells 2 to 6); for candidate cell 2, it records candidate cells 1 and candidate cells 3 to 6 (cell identification information and / or execution conditions for candidate cells 1 and candidate cells 3 to 6), and so on.

[0153] In some embodiments, they can also be combined into a larger list, where each entry in the list includes a second list.

[0154] The third list is the list of conditional LTM candidate cells and / or execution conditions when the source cell is the serving cell.

[0155] The fourth list is a list of conditional LTM candidate cells and / or execution conditions when the target cell is the serving cell.

[0156] For a conditional LTM candidate cell, the first L1 or L3 execution condition to be satisfied; it can be the first L1 execution condition to be satisfied (the first execution condition (event) in the L1 execution conditions or the second execution condition (event) in the L1 execution conditions or the first execution condition (event) in the L3 execution conditions or the second execution condition (event) in the L3 execution conditions), such as ENUMERATED{condFirstEvent,condSecondEvent}; or it can be the first execution condition (L1 execution condition or L3 execution condition) to be satisfied if a conditional LTM candidate cell is configured with L1 and L3 execution conditions, such as ENUMERATED{L1 execution condition,L3 execution condition}.

[0157] For a conditional LTM candidate cell, the time interval between two satisfied L1 or L3 execution conditions; it can be the time interval between two satisfied L3 execution conditions (events), or the time interval between L1 execution conditions (events); or, if a conditional LTM candidate cell is configured with both L1 and L3 execution conditions, the time interval between the L1 and L3 execution conditions. The unit of time interval can be ms or s.

[0158] Fourth instruction information: This fourth instruction information is used to indicate whether this L3 execution condition is a CHO, LTM, or both execution condition; such as ENUMERATED{CHO,LTM,both}.

[0159] In the above, the conditional LTM candidate cells in the case of the serving cell do not include the serving cell, even if the serving cell is also configured as an LTM candidate cell.

[0160] In some embodiments, the above information may be recorded as either the previous information or the current information, where the previous information is information before the execution of LTM, such as the second instruction information before the execution of LTM, and the current information is information after the execution of LTM, such as the second instruction information after the execution of LTM.

[0161] In some embodiments, time-related information may include any one or a combination of the following:

[0162] The time interval from the start of the assessment of the (current) LTM execution conditions to the occurrence of failure;

[0163] The TAT configuration duration corresponding to the TA of the LTM candidate cell;

[0164] The TA (Target Acquisition Time) of an LTM candidate cell corresponds to the TAT (Target Acquisition Time). Both the TA and TAT can be provided / configured by network-side equipment.

[0165] The time elapsed from the last time the TA value of a conditional LTM candidate cell was received until a failure occurred or a cell change was executed.

[0166] Specifically:

[0167] Time interval: The time interval from the start of the LTM execution condition evaluation to the occurrence of failure. The time unit can be ms or s. For example: The network side configures candidate cells 1 to 6 for the terminal. The terminal's current serving cell is serving cell 0. Serving cell 0 does not have execution conditions configured for candidate cells 1 to 6, while candidate cell 6 has execution conditions configured for candidate cells 3 to 5. When the terminal is serving cell 0, it receives an LTM cell switch command MAC CE from the network instructing the terminal to access candidate cell 6. The terminal accesses candidate cell 6 as instructed and starts evaluating candidate cells 3 to 5 after successfully accessing candidate cell 6. However, the terminal experiences a radio link failure (RLF) in candidate cell 6. In this case, the time interval from the start of the terminal's successful access to candidate cell 6 and the start of the evaluation of candidate cells 3 to 5 to the detection of the RLF should be recorded.

[0168] The TAT configuration duration corresponding to the TA of an LTM candidate cell: For example, if the network side configures candidate cells 1 to 6 for the terminal, and the network side sends a TA value for candidate cell 3, and the TAT duration corresponding to this TA value is 500ms, then for candidate cell 3, the terminal can record that the TAT duration corresponding to this TA value is 500ms; this TAT ​​configuration duration can be recorded per candidate cell or a TAT duration can be recorded for all candidate cells.

[0169] The TAT runtime of the TA for LTM candidate cells: For example, if the network side configures candidate cells 1 to 6 for the UE, and the network side sends a TA value for candidate cell 3, the TAT runtime corresponding to this TA value is 500ms. When the terminal evaluates that the execution conditions are met and accesses a candidate cell, this TAT ​​runs for 300ms. Then, for candidate cell 3, the terminal can record the TAT runtime corresponding to this TA value as 300ms. This TAT ​​runtime can be recorded per candidate cell or a TAT runtime can be recorded for all candidate cells.

[0170] The time unit from the most recent receipt of the TA value of this candidate cell to the occurrence of failure / handover execution can be ms or s. For example, the network side configures candidate cells 1 to 6 for the terminal. The network side sends the TA value for candidate cell 3 at time T1. A while later, the network side sends the TA value for candidate cell 3 again at time T2. Subsequently, at time T3, the terminal evaluates that the execution conditions of candidate cell 3 meet the requirements to execute LTM access to candidate cell 3. The terminal should record T3-T2.

[0171] In some embodiments, the above information may be recorded as either the previous information or the current information. The previous information is the information before LTM is executed, such as the TAT runtime of the TA of the LTM candidate cell before LTM is executed. The current information refers to the information after LTM is executed, such as the TAT runtime of the TA of the LTM candidate cell after LTM is executed.

[0172] In some embodiments, beam-related information includes any one or a combination of the following:

[0173] Service beam information for the assessment;

[0174] Beam information of candidate cells participating in the evaluation;

[0175] The fifth indication information is used to indicate whether the serving beam has been changed during the TTT operation;

[0176] Service beam identification information before and after replacement;

[0177] Service beam measurement results before and after the update;

[0178] Source beam information for executing cell changes;

[0179] Target beam information for cell modification.

[0180] Cell changes can include two types: handover and PSCell addition / change.

[0181] Specifically:

[0182] The service beam information involved in the evaluation includes beam identifiers, the indicated Transmission Configuration Indication (TCI) state, and measurement result information (such as L1-Reference Signal Received Power (RSRP)). For example, the service beam of the serving cell involved in the evaluation is the beam corresponding to the indicated TCI state. The identification information of this beam is recorded, such as beam identifier = 1; the identification information of this indicated TCI state can also be recorded, such as TCI state id = 12; the measurement result information of this beam can also be recorded, such as L1-RSRP, L1-Reference Signal Received Quality (RSRQ), L1-SINR, L3-RSRP, L3-RSRQ, L3-SINR, etc.; where L1 refers to the measurement result without L3 filtering, and L3 refers to the measurement result with L3 filtering.

[0183] Information on the target beams involved in the evaluation, such as beam identifiers and measurement result information (e.g., L1-RSRP): For example, the beam information involved in the evaluation includes multiple beams from multiple candidate cells. The identification information of each beam involved in the evaluation can be recorded, such as beam identifier = 1; the TCI state information of each beam involved in the evaluation can also be recorded, such as TCI state id = 12; the measurement result information of each beam involved in the evaluation can also be recorded, such as L1-RSRP, L1-RSRQ, L1-Signal to Noise Ratio (SINR); where L1 refers to the measurement result without L3 filtering.

[0184] Fifth indication information: This fifth indication information is used to indicate whether the serving beam has been changed during the Time To Trigger (TTT) operation; this indication information can be 1 bit, 0 indicates that the serving beam has not been changed during the TTT operation, and 1 indicates that the serving beam has been changed during the TTT operation; this TTT can be the TTT of the target cell that finally meets the execution conditions to trigger cell change, or the TTT of any other candidate cell.

[0185] Service beam(s) identification information before and after replacement: For example, if the service beam of the current serving cell is beam identifier = 1, during the execution condition assessment process, when the target cell is evaluated, the execution conditions of the target cell are met and TTT is enabled. However, during the TTT enabling process, the service beam of the serving cell changes from beam identifier = 1 to beam identifier = 3. At this time, beam identifier = 1 (before replacement) and / or beam identifier = 3 (after replacement) should be recorded. If there are multiple service beam replacements of serving cells, multiple beam identifiers can be recorded, such as recording a beam identifier list.

[0186] Service beam(s) measurement results before and after update: In addition to recording the beam identification information as described above, the measurement results of the service beam before and after update can also be recorded in the same way as the beam identification information.

[0187] The source beam information for executing cell change, that is, the source serving beam information when the execution conditions are finally met to trigger cell change. This beam information can be beam identification information and beam measurement result information, specifically recorded in the same way as the beam identification information and beam measurement result above.

[0188] The target beam information for cell change execution, i.e. the target beam information when the execution conditions are finally met to trigger cell change, can be beam identification information and beam measurement result information, specifically recorded in the same way as the beam identification information and beam measurement result above.

[0189] The above beam measurement results can be the most recently obtained measurement results, or the measurement results when LTM is executed, or the measurement results when LTM is triggered.

[0190] In some embodiments, the above information may be recorded as either the previous information or the current information. The previous information refers to the information before LTM was performed, such as the source beams and candidate beams that participated in the evaluation before LTM was performed. The current information refers to the information after LTM was performed, such as the source beams and candidate beams that participated in the evaluation after LTM was performed.

[0191] In some embodiments, the first configuration information can be the addition / modification of subsequent CPAC configuration information for the primary cell PSCell of the continuous condition secondary cell group.

[0192] When the first configuration information is subsequent CPAC configuration information, the first failure-related information and / or the first success-related information include any one or a combination of the following:

[0193] The sixth indication information is used to indicate whether the neighboring cell is configured with the subsequent CPAC execution condition or whether the neighboring cell is a subsequent CPAC candidate cell; specifically, this sixth indication information indicates whether the neighboring cell is configured with the subsequent CPAC execution condition or whether the neighboring cell is a subsequent CPAC candidate cell.

[0194] The fifth list configured for each subsequent CPAC candidate cell, when the subsequent CPAC candidate cell is the serving cell, includes other subsequent CPAC candidate cells and / or execution conditions.

[0195] The sixth list of subsequent CPAC candidate cells and / or execution conditions when the source cell is the serving cell, i.e., the list of other subsequent CPAC candidate cells and / or execution conditions when the source cell is the serving cell.

[0196] The seventh list of subsequent CPAC candidate cells and / or execution conditions when the target cell is the serving cell, i.e., the list of other subsequent CPAC candidate cells and / or execution conditions when the target cell is the serving cell.

[0197] For a subsequent CPAC candidate cell, the first execution condition that is met;

[0198] For a subsequent CPAC candidate cell, the time interval between two satisfied execution conditions.

[0199] In some embodiments, the information processing method provided by the present invention includes:

[0200] The terminal sends a seventh indication message to the network-side device, which indicates that the terminal has stored first failure-related information and / or first success-related information. Specifically, the terminal reports the seventh indication message to the network-side device, indicating that it has stored first failure-related information and / or first success-related information.

[0201] In some embodiments, the information processing method provided by the present invention includes:

[0202] The terminal receives an eighth indication message from the network-side device, which instructs the terminal to report the first failure-related information and / or the first success-related information. Specifically, the network-side device sends a request message requesting the terminal to report; based on the network-side device's request, the terminal reports the first failure-related information and / or the first success-related information to the network-side device.

[0203] Figure 2 is a second schematic flowchart of the information processing method provided in this embodiment of the present disclosure. This method can be applied to network-side devices. As shown in Figure 2, the method includes the following steps:

[0204] Step 201: Receive the first failure-related information and / or the first success-related information sent by the terminal.

[0205] The terminal stores first configuration information, and in the event of a mobility failure and / or a critical failure, the terminal can record first failure-related information and / or first success-related information. Specifically, in the event of a UE mobility failure, first failure-related information can be recorded; in the event of a UE critical failure, first success-related information can be recorded.

[0206] In some embodiments, a single cell change process may result in both success and failure reports being generated. For example, if the UE successfully performs an LTM or subsequent CPAC cell change, and the triggering condition for recording a success report is met, the UE will record a success report and record the first success-related information in the success report. If the UE successfully accesses the target cell and then experiences an RLF in the target cell within a short period of time, the UE will record a failure report and record the first failure-related information in the failure report. The terminal can record both the first failure-related information and the first success-related information for a single cell change, and the first failure-related information and the first success-related information can be recorded in different reports.

[0207] In some embodiments, the first failure-related information may be failure-related information recorded when a failure is determined to have occurred, and the first success-related information may be success-related information recorded when a critical failure is determined to have occurred. Here, critical failure can be understood as a situation where cell change is successfully executed, but a critical failure occurs.

[0208] In some embodiments, the first configuration information can be used for continuous or discontinuous cell changes. The first configuration information includes configuration information for one or more candidate cells, and at least one candidate cell is configured with cell change execution conditions. Specifically, the first configuration information stored by the terminal may have been previously sent by the network-side device and stored locally on the terminal, and the first configuration information may include configuration information for one or more candidate cells, with at least one candidate cell configured with cell change execution conditions.

[0209] After the terminal records the first failure information and / or the first success information, it can send the recorded information to the network-side device for optimization processes.

[0210] The information processing method provided in this embodiment of the invention allows a terminal to record first failure-related information and / or first success-related information when a mobility failure and / or critical failure occurs. The terminal then sends the recorded first failure-related information and / or first success-related information to a network-side device for network optimization, such as optimizing conditional LTM mobility or optimizing subsequent CPAC mobility.

[0211] In some embodiments, the first configuration information is sent to the terminal, wherein the first configuration information is LTM configuration information, and the LTM configuration information includes any one or a combination of the following:

[0212] Conditional LTM configuration based on L1 measurement (L1-based conditional LTM configuration, with L1 execution conditions);

[0213] Conditional LTM configuration based on layer 3 (L3-based conditional LTM configuration execution conditions are L3 execution conditions);

[0214] L1-based measurement-based unconditional LTM configuration (L1-based LTM configuration, unconditional LTM execution);

[0215] L3-based unconditional LTM configuration (L3-based LTM configuration, unconditional LTM execution).

[0216] For details, please refer to the description of the above method embodiments, which will not be repeated here.

[0217] In some other embodiments, the first configuration information is sent to the terminal, and the first configuration information is subsequent CPAC configuration information.

[0218] In some embodiments, the information processing method provided by the present invention includes:

[0219] The receiving terminal sends a seventh indication message, which indicates that the terminal stores the first failure-related information and / or the first success-related information. Specifically, the terminal reports the seventh indication message to the network-side device, indicating that the terminal side stores the first failure-related information and / or the first success-related information.

[0220] In some embodiments, the information processing method provided by the present invention includes:

[0221] The network-side device sends an eighth indication message to the terminal, which instructs the terminal to report the first failure-related information and / or the first success-related information. Specifically, the network-side device sends a request message to request the terminal to report, and based on the request from the network-side device, the terminal reports the first failure-related information and / or the first success-related information to the network-side device.

[0222] In some embodiments, the network-side device performs conditional LTM MRO optimization based on first failure-related information and / or first success-related information reported by the terminal, wherein the interface includes one or more of the following behaviors:

[0223] The first failure-related information and / or the first success-related information are sent via the Xn / X2 interface to the source node or source centralized unit (CU), or to the failed node or failed CU. Specifically, the node receiving the first failure-related information and / or the first success-related information sends this information via the Xn / X2 interface to the node that experienced the problem. This problematic node may be the source CU of this cell change, or the node that failed (source node or target node).

[0224] The failed node or failed CU will send the first failure-related information and / or the first success-related information to the source node or source CU via the Xn / X2 interface; or

[0225] The source node or source CU sends the first failure-related information and / or the first success-related information to the source distributed unit (DU) via the F1 interface.

[0226] The aforementioned failed node can be understood as the target node when the cell change failed or the source node the terminal connected to when the radio link failed. The source node is the node the UE connected to before the cell change. "At that time" refers to the situation where mobility failure / critical failure occurred. The node can be a CU / DU separated base station or a non-CU / DU separated base station.

[0227] In the information processing method provided in this embodiment of the invention, when a mobility failure and / or critical failure occurs, the terminal records first failure-related information and / or first success-related information, and sends the recorded first failure-related information and / or first success-related information to the network-side device to achieve network optimization.

[0228] Figure 3 is a third schematic flowchart of the information processing method provided in this embodiment of the present disclosure. This method can be applied to network-side devices. As shown in Figure 3, the method includes the following steps:

[0229] Step 301: Receive a first report and / or a secondary cell group failure information message (SCGFailureInformation), and search for first configuration information in the terminal's context information. The first report includes one or more of the following: Radio Link Failure Report (RLF), Successful Handover Report (SHR), and Successful Secondary Cell Group Primary Cell Addition or Change Report (SPR). The first configuration information is recorded in the terminal's context information and is at least one of LTM configuration information and subsequent CPAC configuration information.

[0230] Step 302: Based on at least one of the received first report, the secondary cell group failure information message SCGFailureInformation, and the found first configuration information, perform failure and / or critical failure optimization.

[0231] Specifically, the network-side device configures the first configuration information for the terminal and then records the first configuration information in the terminal's context information. The first configuration information can be LTM configuration information, subsequent CPAC configuration information, or both LTM configuration information and subsequent CPAC configuration information.

[0232] When a network-side device receives one or more of the following: Radio Link Failure Report (RLF), Successful Handover Report (SHR), or Successful Addition or Change of Primary Cell in Secondary Cell Group (SPR), it can find the terminal information recorded at that time based on the information in the report. Then, it can combine the first configuration information in the terminal recorded at that time with the first report and / or SCGFailureInformation message to perform conditional LTM optimization or subsequent CPAC optimization.

[0233] In some embodiments, this network node (such as CU) may send at least one of the following messages to the source DU via the F1 interface: UE context information, first configuration information, first report, and / or SCGFailureInformation message, for conditional LTM optimization by the source DU.

[0234] The methods provided in the embodiments of the present invention will be further described below with reference to some specific examples.

[0235] Example 1: The terminal is configured with conditional LTM, but the terminal experiences an RLF in the source cell.

[0236] Step 1: The network side sends pre-configured LTM configuration information to the terminal; the configuration information may include one or more of the following:

[0237] 1) L1-based LTM configuration; This L1-based LTM configuration is for unconditional LTM execution, that is, no execution conditions are configured for LTM candidate cells. The execution of LTM is triggered by the source DU making a cell change decision based on the L1 measurement results reported by the UE and sending an LTM cell switch command MAC CE to the terminal E. When the terminal receives the LTM cell switch command MAC CE sent by the source DU, the UE performs LTM access to the target cell.

[0238] 2) L3-based LTM configuration; This L3-based LTM configuration is for unconditional LTM execution, that is, no execution conditions are configured for LTM candidate cells. The execution of LTM is triggered by the CU making a cell change decision based on the L3 measurement results reported by the terminal and the source DU sending an LTM cell switch command MAC CE to the terminal. When the terminal receives the LTM cell switch command MAC CE sent by the source DU, the terminal executes LTM to access the target cell.

[0239] 3) L1-based conditional LTM configuration; This L1-based conditional LTM configuration is for terminal-triggered LTM execution, that is, L1 execution conditions are configured for LTM candidate cells, the UE performs L1 execution condition evaluation, and when the evaluation execution conditions are met, the terminal accesses the corresponding target cell.

[0240] 4) L3-based conditional LTM configuration; This L3-based conditional LTM configuration is for the terminal to trigger LTM execution, that is, to configure L3 execution conditions for LTM candidate cells, the terminal performs L3 execution condition evaluation, and when the evaluation execution conditions are met, the terminal accesses the corresponding target cell.

[0241] The above configuration information can include any combination of the four types of configuration information mentioned above. For example, the network side can configure LTM candidates, some of which are configured with execution conditions (terminal-triggered conditional LTM), and some of which are not configured with execution conditions (non-conditional LTM). The execution conditions of the candidate cells for terminal-triggered conditional LTM can be L1 execution conditions or L3 execution conditions. Non-conditional LTM can be determined by the source DU based on the L1 measurement results reported by the terminal and instruct the UE to change the cell through LTM cell switch command MAC CE, or it can be determined by the CU based on the L3 measurement results reported by the terminal and instruct the terminal to change the cell through the source DU by sending LTM cell switch command MAC CE.

[0242] Step 2: The terminal performs L1 and / or L3 measurements in the source cell, evaluating (terminal-triggered) or not evaluating (network-triggered) the execution conditions. However, a Radio Link Failure (RLF) occurs. The terminal records the first failure-related information in the RLF report or SCGFailureInformation message. The specific failure information includes one or more of the following:

[0243] (1) Execution condition related information:

[0244] An indication message that indicates whether the neighboring cell or candidate cell is configured with LTM execution conditions;

[0245] A list of LTM candidate cells configured with execution conditions;

[0246] An instruction message indicates the type of LTM execution condition (L1 execution condition or L3 execution condition);

[0247] Each conditional LTM candidate cell is configured with other conditional LTM candidate cells and / or execution condition list in the case of serving cell.

[0248] The first L3 execution condition to be met;

[0249] The time interval between two satisfied L3 execution conditions;

[0250] An indication message indicates that this L3 execution condition is a CHO, LTM, or both execution condition.

[0251] (2) Time-related information:

[0252] The time interval from the start of this assessment of LTM execution conditions to the occurrence of failure;

[0253] The TAT configuration duration corresponding to the TA of the LTM candidate cell;

[0254] The TAT runtime of the TA for LTM candidate cells;

[0255] From the last time the TA value of this candidate cell was received until the failure occurred;

[0256] (3) Beam-related information:

[0257] Information on the service beams involved in the evaluation, such as beam identifier, indicated TCI state, and measurement result information (such as L1-RSRP);

[0258] Information on the beams involved in the evaluation, such as beam identification and measurement results (e.g., L1-RSRP);

[0259] An indication message shows whether the serving beam has been changed during TTT operation;

[0260] Service beam(s) identification information before and after replacement;

[0261] Information on service beam(s) measurement results before and after the update.

[0262] (4) Other relevant information

[0263] L3 / L1 measurement results for each candidate cell / candidate beam in conditional LTM;

[0264] L1 / L3 measurement results information for the serving cell / target cell / neighboring cell;

[0265] The received TA values ​​for each candidate cell and / or each candidate beam;

[0266] Step 3: The terminal sends an availability indication to the network;

[0267] Step 4: The network side sends a terminal information request message to request information related to the first failure;

[0268] Step 5: The terminal sends the first failure-related information to the network side based on the network side's request, such as a terminal information response message.

[0269] Step 6: After receiving the first failure-related information from the terminal, the node that received the first failure-related information sends this information to the failed node through the Xn / X2 interface. The failed node analyzes and optimizes the conditional LTM based on the first failure-related information, and the analysis includes one or more of the following situations:

[0270] Case 1: The problem lies with the CU itself, such as the configuration of L3 execution conditions or L3-based LTM (unconditional LTM execution), and the source CU performs the analysis itself;

[0271] Case 2: If the source CU analyzes that the problem is not its own, such as if it is configured with L1 execution conditions or L1-based LTM (unconditional LTM execution), the source CU sends the first failure information to the source DU through the F1 interface, and the source DU optimizes it.

[0272] Case 3: The source CU analyzes that both it and the source DU have problems, such as when L3 execution conditions are configured at the same time (e.g., for different candidate cells). The source CU sends the first failure information to the source DU through the F1 interface, and the source CU and source DU work together to optimize it.

[0273] Example 2a: The terminal is configured with conditional LTM, and the terminal fails to execute conditional LTM; Example 2b: The terminal is configured with conditional LTM, and the terminal fails to execute unconditional LTM.

[0274] Step 1 is the same as in Example 1;

[0275] Step 2a: The terminal performs L1 and / or L3 measurements in the source cell, evaluates the execution conditions, evaluates that there are candidate cells that meet the execution conditions, triggers LTM to perform access to the corresponding candidate target cell, but access failure occurs;

[0276] Step 2b: The terminal performs L1 and / or L3 measurements in the source cell without evaluating the execution conditions (network triggering). The terminal receives the LTM cell switch command MAC CE sent by the network. The UE performs LTM access to the candidate target cell but the execution fails.

[0277] The terminal records the first failure-related information in the RLF report or SCGFailureInformation message. The specific failure information includes one or more of the following:

[0278] (1) Execution condition related information:

[0279] An indication message that indicates whether the neighboring cell or candidate cell is configured with LTM execution conditions;

[0280] A list of LTM candidate cells configured with execution conditions;

[0281] An instruction message indicates the type of LTM execution condition (L1 execution condition or L3 execution condition);

[0282] Each conditional LTM candidate cell is configured with other conditional LTM candidate cells and / or execution condition list in the case of serving cell.

[0283] The first L3 execution condition to be met;

[0284] The time interval between two satisfied L3 execution conditions;

[0285] An instruction message indicates that this L3 execution condition is a CHO, LTM, or both execution condition;

[0286] (2) Time-related information

[0287] The time interval from the start of this assessment of LTM execution conditions to the occurrence of failure;

[0288] The TAT configuration duration corresponding to the TA of the LTM candidate cell;

[0289] The TAT runtime of the TA for LTM candidate cells;

[0290] From the last time the TA value of this candidate cell was received until the failure occurred / cell change was executed;

[0291] (3) Beam-related information

[0292] Information on the service beams involved in the evaluation, such as beam identifier, indicated TCI state, and measurement result information (such as L1-RSRP);

[0293] Information on the beams involved in the evaluation, such as beam identification and measurement results (e.g., L1-RSRP);

[0294] An indication message shows whether the serving beam has been changed during TTT operation;

[0295] Service beam(s) identification information before and after replacement;

[0296] Service beam(s) measurement results before and after the update;

[0297] Source beam information for cell modification (source beam information that meets the conditions);

[0298] Target beam information for cell modification;

[0299] (4) Other information

[0300] An indication message indicating that the current handover type is Conditional LTM; (This only applies to Conditional LTM, i.e., only to LTMs triggered by the UE)

[0301] L3 / L1 measurement results for each candidate cell / candidate beam in conditional LTM;

[0302] L1 / L3 measurement results information for the serving cell / target cell / neighboring cell;

[0303] The received TA values ​​for each candidate cell / candidate beam / target cell / target beam.

[0304] Steps 3 through 5 are the same as in Example 1 above;

[0305] Step 6: After receiving the first failure-related information from the terminal, the node that received the first failure-related information sends this information to the target node or source node at that time through the Xn / X2 interface. If it sends it to the target node, the target node can further send this information to the source node at that time through the Xn / X2 interface. The source node analyzes and optimizes the conditional LTM based on the first failure-related information, including one or more of the following situations:

[0306] Case 1: The source CU analysis is its own problem, such as the configuration of L3 execution conditions or L3-based LTM (unconditional LTM execution), the source CU performs the analysis itself;

[0307] Case 2: If the source CU analyzes that the problem is not its own, such as if it is configured with L1 execution conditions or L1-based LTM (unconditional LTM execution), the source CU sends the first failure information to the source DU through the F1 interface, and the source DU performs optimization.

[0308] Case 3: Both the source CU and the source DU have issues. For example, if L3 execution conditions are configured, and LTM execution fails even when the conditions are met, it indicates a problem with the CU's execution condition configuration. If the network also has LTM candidate cells without execution conditions and L1 measurement and reporting are configured, then the source DU's failure to trigger unconditional LTM execution also indicates a problem and requires optimization. The source CU sends the first failure information to the source DU through the F1 interface, and the source CU and source DU work together to optimize the process.

[0309] Example 3: The terminal is configured with conditional LTM configuration. The terminal successfully executes LTM, but an RLF occurs in the target cell shortly afterward.

[0310] Step 1 is the same as in Example 1 above;

[0311] Step 2: The terminal performs L1 and / or L3 measurements in the source cell and evaluates (UE-triggered) or does not evaluate (network-triggered) the execution conditions. The UE evaluates that there is a candidate cell that meets the execution conditions or the terminal receives the LTM cell switch command MAC CE sent by the network. The UE successfully executes LTM to access the candidate target cell, but the UE experiences an RLF in the target cell within a short period of time.

[0312] The terminal records the first failure-related information in the RLF report or SCGFailureInformation message. The specific failure information includes one or more of the following:

[0313] (1) Execution condition related information:

[0314] An indication message that indicates whether the neighboring cell / candidate cell is configured with LTM execution conditions;

[0315] A list of LTM candidate cells configured with execution conditions;

[0316] An instruction message indicates the type of LTM execution condition (L1 execution condition or L3 execution condition);

[0317] Each conditional LTM candidate cell is configured with other conditional LTM candidate cells and / or execution condition list in the case of serving cell.

[0318] Other conditions for LTM candidate cells and / or execution conditions when the source cell is the serving cell;

[0319] Other conditions for LTM candidate cells and / or execution conditions when the target cell is the serving cell;

[0320] The first L3 execution condition to be met;

[0321] The time interval between two satisfied L3 execution conditions;

[0322] An instruction message indicates that this L3 execution condition is a CHO, LTM, or both execution condition;

[0323] The above information can be recorded as either the previous one or the current one, and the terminal can further specify whether it is the previous one or the current one (mainly content related to L3 execution conditions).

[0324] (2) Time-related information

[0325] The time interval from the start of this assessment of LTM execution conditions to the occurrence of failure;

[0326] The TAT configuration duration corresponding to the TA of the LTM candidate cell;

[0327] The TAT runtime of the TA for LTM candidate cells;

[0328] From the last time the TA value of this candidate cell was received until the failure occurred;

[0329] From the time the TA value of this candidate cell was last received to the time the cell change was executed;

[0330] The above information can be recorded as either the previous one or the current one, and the terminal can further specify whether it is the previous one or the current one.

[0331] (3) Beam-related information

[0332] Information on the service beams involved in the evaluation, such as beam identifier, indicated TCI state, and measurement result information (such as L1-RSRP);

[0333] Information on the beams involved in the evaluation, such as beam identification and measurement results (e.g., L1-RSRP);

[0334] An indication message shows whether the serving beam has been changed during TTT operation;

[0335] Service beam(s) identification information before and after replacement;

[0336] Service beam(s) measurement results before and after the update;

[0337] Source beam information for cell modification (source beam information that meets the conditions);

[0338] Target beam information for cell modification;

[0339] The above information can be recorded as either the previous one or the current one, and the terminal can further specify whether it is the previous one or the current one; (except for the source / target beam information for performing cell changes).

[0340] (4) Other information

[0341] An indication message indicating that the most recent / current handover type was Conditional LTM; (This message is only executed for Conditional LTM, i.e., only for LTMs triggered by the UE)

[0342] L3 / L1 measurement results for each candidate cell / candidate beam in conditional LTM;

[0343] L1 / L3 measurement results information for the serving cell / target cell / neighboring cell;

[0344] The received TA values ​​for each candidate cell / candidate beam / target cell / target beam;

[0345] The above information can be recorded as either the previous one or the current one, and the terminal can further specify whether it is the previous one or the current one (except for the switching type indication).

[0346] Steps 3 through 5 are the same as in Example 1;

[0347] Step 6: After receiving the first failure-related information from the terminal, the node that received the first failure-related information sends this information to the failing node through the Xn / X2 interface. If the failing node analyzes that the problem lies with the source node, the failing node can further send this information to the source node at that time through the Xn / X2 interface. The source node analyzes and optimizes the conditional LTM based on the first failure-related information, including one or more of the following situations:

[0348] Case 1: The source CU analysis is its own problem, such as the configuration of L3 execution conditions or L3-based LTM (unconditional LTM execution), the source CU performs the analysis itself;

[0349] Case 2: If the source CU analyzes that the problem is not its own, such as if it is configured with L1 execution conditions or L1-based LTM (unconditional LTM execution), the source CU sends the first failure information to the source DU through the F1 interface, and the source DU performs optimization.

[0350] Case 3: Both the source CU and the source DU have issues. For example, if L3 execution conditions are configured and LTM execution is successful when the conditions are met, but an RLF occurs shortly afterward in the target cell, it indicates that the CU's execution conditions are configured incorrectly. If the network side also has LTM candidate cells without execution conditions configured, and L1 measurement and reporting are configured, then the source DU's failure to trigger unconditional LTM execution at that time also indicates a problem and requires optimization. The source CU sends the first failure information to the source DU through the F1 interface, and the source CU and source DU work together to optimize the process.

[0351] Example 4: The terminal is configured with conditional LTM configuration. The terminal executes LTM successfully, but a critical failure occurs.

[0352] Step 1 is the same as in Example 1;

[0353] Step 2: The terminal performs L1 and / or L3 measurements in the source cell, evaluates (terminal triggered) or does not evaluate (network triggered) the execution conditions, the terminal evaluates that there is a candidate cell that meets the execution conditions or the terminal receives the LTM cell switch command MAC CE sent by the network, the terminal successfully executes LTM access to the candidate target cell, but a critical failure occurs;

[0354] The methods for a terminal to determine (the terminal can determine this during cell change, random access completion, or during cell change process) to identify critical failure include one or more of the following methods:

[0355] 1) If the TAT corresponding to the TA value of the target cell sent by the network exceeds a threshold; this threshold is pre-configured by the network, and the terminal considers a critical failure to have occurred;

[0356] 2) If the TAT corresponding to the TA value of the target cell sent by the network times out, and the terminal performs RACH-less access based on UE-based TA, the terminal considers a critical failure to have occurred;

[0357] 3) If the TAT corresponding to the TA value of the target cell sent by the network times out, the terminal performs RACH-based access, and the terminal considers a critical failure to have occurred.

[0358] 4) If terminal E accesses an LTM candidate cell based on network instructions, and the LTM candidate cell has been configured with execution conditions for this cell change, but the execution conditions are not met, the terminal considers a critical failure to have occurred.

[0359] 5) If the network provides TA values ​​for other LTM candidate cells but does not provide TA values ​​for the target cell, the terminal considers a critical failure to have occurred;

[0360] 6) If, during the TTT operation, the service beam is changed for the L1 execution condition assessment, this execution condition is met, execution is triggered, and the execution is successful, the terminal considers a critical failure to have occurred.

[0361] 7) The T310 timer of the source cell exceeds the second preset threshold;

[0362] 8) The T312 timer of the source cell exceeded the third preset threshold;

[0363] 9) The T304 timer of the target cell exceeded the fourth preset threshold.

[0364] The terminal records first success-related information in SHR or SPR, which specifically includes one or more of the following:

[0365] (1) Execution condition related information:

[0366] An indication message that indicates whether the neighboring cell / candidate cell is configured with LTM execution conditions;

[0367] A list of LTM candidate cells configured with execution conditions;

[0368] An instruction message indicates the type of LTM execution condition (L1 execution condition or L3 execution condition);

[0369] Each conditional LTM candidate cell is configured with other conditional LTM candidate cells and / or execution condition list in the case of serving cell.

[0370] The first L3 execution condition to be met;

[0371] The time interval between two satisfied L3 execution conditions;

[0372] An instruction message indicates that this L3 execution condition is a CHO, LTM, or both execution condition;

[0373] The above information can be recorded as either the previous one or the current one, and the terminal can further specify whether it is the previous one or the current one; (mainly content related to L3 execution conditions).

[0374] (2) Time-related information

[0375] The TAT configuration duration corresponding to the TA of the LTM candidate cell;

[0376] The TAT runtime of the TA for LTM candidate cells;

[0377] From the time the TA value of this candidate cell was last received to the time the cell change was executed;

[0378] The above information can be recorded as either the previous one or the current one, and the terminal can further specify whether it is the previous one or the current one.

[0379] (3) Beam-related information

[0380] Information on the service beams involved in the evaluation, such as beam identifier, indicated TCI state, and measurement result information (such as L1-RSRP);

[0381] Information on the beams involved in the evaluation, such as beam identification and measurement results (e.g., L1-RSRP);

[0382] An indication message shows whether the serving beam has been changed during TTT operation;

[0383] Service beam(s) identification information before and after replacement;

[0384] Service beam(s) measurement results before and after the update;

[0385] Source beam information for cell modification (source beam information that meets the conditions);

[0386] Target beam information for cell modification;

[0387] The above information can be recorded as either the previous one or the current one, and the terminal can further specify whether it is the previous one or the current one; (except for the source / target beam information for performing cell changes).

[0388] (4) Other information

[0389] An indication message indicating that the most recent / current handover type was conditional LTM; (only executed for conditional LTM, i.e., only for LTMs triggered by the UE);

[0390] L3 / L1 measurement results for each candidate cell / candidate beam in conditional LTM;

[0391] L1 / L3 measurement results information for the serving cell / target cell / neighboring cell;

[0392] The received TA values ​​for each candidate cell / candidate beam / target cell / target beam;

[0393] The Cause value indicates the reason that triggered the first successful record (i.e., which triggering condition was met).

[0394] The above information can be recorded as either the previous one or the current one, and the terminal can further specify whether it is the previous one or the current one; (except for the switch type indicator and cause value).

[0395] Steps 3 through 5 are the same as in Example 1; (the difference lies in the information related to the first success).

[0396] Step 6: After receiving the first success-related information from the terminal, the node that received the first success-related information sends this information to the source node at that time through the Xn / X2 interface. The source node analyzes and optimizes the conditional LTM based on the first success-related information, including one or more of the following situations:

[0397] Case 1: The source CU analysis is its own problem, such as the configuration of L3 execution conditions or L3-based LTM (unconditional LTM execution), the source CU performs the analysis itself;

[0398] Case 2: If the source CU analyzes that the problem is not its own, such as if it is configured with L1 execution conditions or L1-based LTM (unconditional LTM execution), the source CU sends the first success information to the source DU through the F1 interface, and the source DU performs optimization.

[0399] Case 3: Both the source CU and the source DU have issues. For example, if L3 execution conditions are configured, and LTM execution is successful when the conditions are met, but a critical failure occurs, it indicates that the CU's execution conditions are configured incorrectly. If the network also has LTM candidate cells without execution conditions and L1 measurement and reporting are configured, then the source DU's failure to trigger unconditional LTM execution at that time also indicates a problem and needs optimization. The source CU sends the first success information to the source DU through the F1 interface, and the source CU and source DU work together to optimize the process.

[0400] Example 5: Network-side solution.

[0401] Step 1: Configure conditional LTM configuration information for the terminal on the network side;

[0402] Step 2: The network records this configuration information, such as in the terminal context, and maintains this terminal context;

[0403] Step 3a: When the network testing device receives an RLF report or SCGFailureInformation message containing information related to the first failure, or an SHR or SPR containing information related to the first success, the network can find the UE information recorded at that time based on the information (such as time information, Cell Radio Network Temporary Identifier (C-RNTI) information) and perform conditional LTM optimization by combining the UE information recorded at that time with the received information related to the first failure or the first success.

[0404] Step 3b: When the network receives an RLF report or SCGFailureInformation message or an SHR or SPR, the network can find the terminal information recorded at that time based on the information contained therein (such as time information, C-RNTI information) and perform conditional LTM optimization by combining the terminal information recorded at that time with the information in the RLF report or SCGFailureInformation message or the SHR or SPR; (in this case, the RLF report or SCGFailureInformation message does not include information related to the first failure, and the SHR or SPR does not include information related to the first success).

[0405] The information recorded on the network side includes all or part of the information related to the first failure or the first success. The network may include a (source) CU and a (source or candidate) DU; the network-side scheme includes information exchange between the interfaces of the (source) CU and the (source or candidate) DU, such as the source CU and source DU exchanging information through the F1 interface for optimization.

[0406] Example 6: Subsequent CPAC failure / critical failure.

[0407] The scenarios in which Subsequent CPAC fails include one or more of the following:

[0408] 1) The terminal is configured with subsequent CPAC, but an RLF occurs in the source cell (source PSCell);

[0409] 2) The terminal is configured with subsequent CPAC, but the subsequent CPAC execution fails;

[0410] 3) The terminal is configured with subsequent CPAC, and the subsequent CPAC is executed successfully, but an RLF occurs in the target cell within a short period of time;

[0411] The scenarios in which Subsequent CPAC experiences critical failure include one or more of the following scenarios:

[0412] 1) T310 exceeded a configured threshold;

[0413] 2) T312 exceeded a configured threshold;

[0414] 3) T304 exceeded a configured threshold;

[0415] When a terminal is configured with subsequent CPAC and a failure / critical failure occurs, the terminal can log the following execution condition-related information:

[0416] An indication message that indicates whether the neighboring cell is configured with subsequent CPAC execution conditions or whether the neighboring cell is a subsequent CPAC candidate cell;

[0417] Each subsequent CPAC candidate cell is configured as another subsequent CPAC candidate cell and / or execution condition list in the case of the serving cell.

[0418] A list of other subsequent CPAC candidate cells and / or execution conditions when the source cell is the serving cell;

[0419] A list of other subsequent CPAC candidate cells and / or execution conditions when the target cell is the serving cell;

[0420] The first execution condition that is met;

[0421] The time interval between two satisfied execution conditions.

[0422] Figure 4 is a schematic diagram of the structure of a terminal provided in an embodiment of this disclosure. As shown in Figure 4, the terminal includes a memory 420, a transceiver 410, and a processor 400; wherein the processor 400 and the memory 420 may also be physically arranged separately.

[0423] The memory 420 is used to store computer programs; the transceiver 410 is used to send and receive data under the control of the processor 400.

[0424] In Figure 4, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 400 and memory represented by memory 420. The bus architecture may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be further described herein. The bus interface provides an interface. Transceiver 410 may be multiple elements, including transmitters and receivers, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, etc. For different user equipment, user interface 430 may also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[0425] The processor 400 is responsible for managing the bus architecture and general processing, while the memory 420 can store the data used by the processor 400 when performing operations.

[0426] The processor 400 can 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 can also adopt a multi-core architecture.

[0427] The processor 400 executes any of the information processing methods provided in this disclosure embodiment according to the obtained executable instructions by calling a computer program stored in the memory 420, including:

[0428] In the event of a mobility failure and / or critical failure, the system records first failure-related information and / or first success-related information, where first configuration information is stored and mobility failure and / or critical failure occur. The first configuration information includes configuration information for one or more candidate cells, and at least one candidate cell is configured with conditions for cell change execution.

[0429] Send the first failure-related information and / or the first success-related information to the network-side device.

[0430] In some embodiments, the first configuration information is mobility LTM configuration information triggered by Layer 1L1 or Layer 2L2, and the LTM configuration information includes any one or a combination of the following:

[0431] Conditional LTM configuration based on L1 measurement;

[0432] Conditional LTM configuration based on layer 3 L3 measurements;

[0433] Unconditional LTM configuration based on L1 measurement;

[0434] Unconditional LTM configuration based on L3 measurements.

[0435] In some embodiments, the occurrence of mobility failure includes one or more of the following mobility failures:

[0436] The terminal experiences a radio link failure (RLF) in the source cell.

[0437] The terminal execution condition LTM failed.

[0438] The terminal attempted unconditional LTM, but the execution failed.

[0439] The terminal successfully performed conditional LTM, but an RLF occurred in the target cell;

[0440] The terminal successfully performed unconditional LTM, but an RLF occurred in the target cell.

[0441] In some embodiments, the occurrence of a mobility critical failure includes the occurrence of one or more of the following mobility critical failures:

[0442] The time alignment timer TAT corresponding to the time alignment TA value of the target cell sent by the network-side device exceeds the first preset threshold.

[0443] The TAT timeout corresponding to the TA value of the target cell sent by the network-side device, and the terminal performs RACH-less access without random access procedure based on the TA value measured by the terminal (UE-based TA).

[0444] When the TAT timeout corresponding to the TA value of the target cell sent by the network-side device, the terminal performs cell access based on random access procedure (RACH-based access).

[0445] The terminal accesses an LTM candidate cell based on a network command. The LTM candidate cell is configured with execution conditions, but the execution conditions are not met.

[0446] The network-side equipment provides TA values ​​for non-target LTM candidate cells, but does not provide TA values ​​for target cells;

[0447] For L1 execution condition evaluation, during the TTT operation, if the service beam is changed, the L1 execution condition is met, triggering LTM execution and LTM execution is successful. This triggering condition can also be used for unconditional LTM. That is, for L1 execution condition evaluation, during the TTT operation, if the service beam is changed, unconditional LTM execution is received, and LTM execution is successful, it can also be used as the triggering condition for recording the first success information.

[0448] The T310 timer of the source cell exceeded the second preset threshold;

[0449] The T312 timer of the source cell exceeded the third preset threshold;

[0450] The T304 timer in the target cell has exceeded the fourth preset threshold.

[0451] In some embodiments, the first failure-related information and / or the first success-related information includes any one or a combination of the following:

[0452] Execution condition information;

[0453] Time-related information;

[0454] Beam-related information;

[0455] First indication information, the first indication information is used to indicate that the current or most recent switch type is conditional LTM;

[0456] L1 measurement results information for conditional LTM candidate cells or candidate beams;

[0457] L3 measurement results information for conditional LTM candidate cells or candidate beams

[0458] L1 measurement results information for the serving cell, target cell, or neighboring cells;

[0459] L3 measurement results information for the serving cell, target cell, or neighboring cells;

[0460] The received conditional LTM candidate cell or candidate beam or target cell or target beam TA value;

[0461] The reason value for triggering the successful cell change report record is used to indicate the reason for triggering the recording of the first successful related information.

[0462] In some embodiments, the execution condition-related information includes any one or a combination of the following:

[0463] The second indication information is used to indicate whether the neighboring cell or LTM candidate cell is configured with LTM execution conditions.

[0464] A first list of conditional LTM candidate cells and / or execution conditions;

[0465] The third indication information is used to indicate the type of LTM execution conditions;

[0466] A second list of LTM candidate cells and / or execution conditions configured for each LTM candidate cell when the LTM candidate cell is the serving cell;

[0467] A third list of conditional LTM candidate cells and / or execution conditions when the source cell is the serving cell;

[0468] A fourth list of conditional LTM candidate cells and / or execution conditions when the target cell is the serving cell;

[0469] For a conditional LTM candidate cell, the first L1 or L3 execution condition that is met;

[0470] For a conditional LTM candidate cell, the time interval between two satisfied L1 or L3 execution conditions;

[0471] The fourth indication information, for a conditional LTM candidate cell, is used to indicate that the L3 execution conditions configured for the conditional LTM candidate cell are the execution conditions of conditional handover CHO, or the execution conditions of LTM, or the execution conditions that include both conditional handover CHO and LTM.

[0472] In some embodiments, the time-related information includes any one or a combination of the following:

[0473] The time interval from the start of LTM execution condition evaluation to the occurrence of failure;

[0474] The TAT configuration duration corresponding to the TA of the LTM candidate cell;

[0475] The TAT runtime of the TA for LTM candidate cells;

[0476] The time elapsed from the last time the TA value of a conditional LTM candidate cell was received until a failure occurred or a cell change was executed.

[0477] In some embodiments, the beam-related information includes any one or a combination of the following:

[0478] Service beam information for the assessment;

[0479] Beam information of candidate cells participating in the evaluation;

[0480] The fifth indication information is used to indicate whether the serving beam has been changed during the TTT operation;

[0481] Service beam identification information before and after replacement;

[0482] Service beam measurement results before and after the update;

[0483] Source beam information for executing cell changes;

[0484] Target beam information for cell modification.

[0485] In some embodiments, the first configuration information is the configuration information for adding / changing the subsequentCPAC of the primary cell PSCell in the continuous condition secondary cell group.

[0486] In some embodiments, the first failure-related information and / or the first success-related information includes any one or a combination of the following:

[0487] The sixth indication information is used to indicate whether the neighboring cell is configured with subsequent CPAC execution conditions or whether the neighboring cell is a subsequent CPAC candidate cell;

[0488] A fifth list of other subsequent CPAC candidate cells and / or execution conditions configured for each subsequent CPAC candidate cell when the subsequent CPAC candidate cell is the serving cell;

[0489] If the source cell is the serving cell, then the sixth list of subsequent CPAC candidate cells and / or execution conditions;

[0490] If the target cell is the serving cell, then the seventh list of subsequent CPAC candidate cells and / or execution conditions;

[0491] For a subsequent CPAC candidate cell, the first execution condition that is met;

[0492] For a subsequent CPAC candidate cell, the time interval between two satisfied execution conditions.

[0493] In some embodiments, the operation includes:

[0494] A seventh indication message is sent to the network-side device, the seventh indication message being used to indicate that the terminal stores the first failure-related information and / or the first success-related information.

[0495] In some embodiments, the operation includes:

[0496] The terminal receives an eighth instruction message from the network-side device, the eighth instruction message being used to instruct the terminal to report the first failure-related information and / or the first success-related information.

[0497] Figure 5 is a schematic diagram of the structure of a network-side device provided in an embodiment of this disclosure. As shown in Figure 5, the network-side device includes a memory 520, a transceiver 510, and a processor 500; wherein the processor 500 and the memory 520 may also be physically arranged separately.

[0498] The memory 520 is used to store computer programs; the transceiver 510 is used to send and receive data under the control of the processor 500.

[0499] In Figure 5, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 500 and memory represented by memory 520. The bus architecture may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be further described herein. The bus interface provides an interface. The transceiver 510 may be multiple elements, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, and other transmission media.

[0500] The processor 500 is responsible for managing the bus architecture and general processing, while the memory 520 can store the data used by the processor 500 when performing operations.

[0501] The processor 500 can be a CPU, ASIC, FPGA or CPLD, and the processor can also adopt a multi-core architecture.

[0502] The processor 500 executes any of the information processing methods provided in this disclosure embodiment according to the obtained executable instructions by calling a computer program stored in the memory 520, including:

[0503] The receiving terminal sends the first failure-related information and / or the first success-related information.

[0504] The first failure-related information and / or the first success-related information are recorded by the terminal when it stores the first configuration information and a mobility failure and / or critical failure occurs; the first configuration information includes the configuration information of one or more candidate cells, and at least one candidate cell is configured with the execution conditions for cell change.

[0505] In some embodiments, the operation further includes:

[0506] The first configuration information is sent to the terminal. The first configuration information is LTM configuration information, which includes any one or a combination of the following:

[0507] L1-based conditional LTM configuration;

[0508] L3-based conditional LTM configuration;

[0509] L1-based unconditional LTM configuration;

[0510] L3-based unconditional LTM configuration.

[0511] In some embodiments, the operation further includes:

[0512] The first configuration information is sent to the terminal, and the first configuration information is subsequent CPAC configuration information.

[0513] In some embodiments, the operation further includes:

[0514] The terminal receives a seventh indication message, which indicates that the terminal stores the first failure-related information and / or the first success-related information.

[0515] In some embodiments, the operation further includes:

[0516] Send an eighth instruction message to the terminal, the eighth instruction message being used to instruct the terminal to report the first failure-related information and / or the first success-related information.

[0517] In some embodiments, the operation further includes:

[0518] Send the first failure-related information and / or the first success-related information to the source node or source central unit CU via the Xn / X2 interface, or send them to the failure node or failure CU; or

[0519] The failed node or failed CU sends the first failure-related information and / or the first success-related information to the source node or source CU via the Xn / X2 interface; or

[0520] The source node or source CU sends the first failure-related information and / or the first success-related information to the source distributed unit DU via the F1 interface.

[0521] Figure 6 is a second schematic diagram of the structure of the network-side device provided in the embodiment of this disclosure. As shown in Figure 6, the network-side device includes a memory 620, a transceiver 610 and a processor 600; wherein the processor 600 and the memory 620 can also be physically arranged separately.

[0522] The memory 620 is used to store computer programs; the transceiver 610 is used to send and receive data under the control of the processor 600.

[0523] In Figure 6, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 600 and memory represented by memory 620. The bus architecture may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be further described herein. A bus interface provides an interface. Transceiver 610 may be multiple elements, including transmitters and receivers, providing a unit for communicating with various other devices over a transmission medium, including wireless channels, wired channels, optical fibers, and other transmission media.

[0524] The processor 600 is responsible for managing the bus architecture and general processing, while the memory 620 can store the data used by the processor 600 when performing operations.

[0525] The processor 600 can be a CPU, ASIC, FPGA or CPLD, and the processor can also adopt a multi-core architecture.

[0526] The processor 600 executes any of the information processing methods provided in this disclosure embodiment according to the obtained executable instructions by calling a computer program stored in the memory 620, including:

[0527] The terminal receives a first report and / or a secondary cell group failure information message (SCGFailureInformation), searches for first configuration information in the terminal's context information, wherein the first report includes one or more of a radio link failure report (RLF report), a successful handover report (SHR), and a successful secondary cell group primary cell addition or change report (SPR); the first configuration information is recorded in the terminal's context information and is at least one of LTM configuration information and subsequent CPAC configuration information.

[0528] Based on at least one of the received first report, the secondary cell group failure information message SCGFailureInformation, and the found first configuration information, failure and / or critical failure optimization is performed.

[0529] It should be noted that the terminal and network-side devices provided in this disclosure can implement all the method steps implemented in the corresponding method embodiments and achieve the same technical effects. Therefore, the parts and beneficial effects that are the same as those in the method embodiments will not be described in detail here.

[0530] The apparatus provided in the embodiments of this disclosure is described below, and the apparatus described below can be referred to in correspondence with the method described above.

[0531] Figure 7 is a second structural schematic diagram of the terminal provided in an embodiment of this disclosure. As shown in Figure 7, the terminal includes a first recording module 71 and a first sending module 72, wherein:

[0532] The first recording module 71 is used to record first failure-related information and / or first success-related information when the first configuration information is stored and a mobility failure and / or critical failure occurs; the first configuration information includes configuration information of one or more candidate cells, and at least one candidate cell is configured with cell change execution conditions; the first sending module 72 is used to send the first failure-related information and / or the first success-related information to the network-side device.

[0533] In some embodiments, the first configuration information is mobility LTM configuration information triggered by Layer 1L1 or Layer 2L2, and the LTM configuration information includes any one or a combination of the following:

[0534] Conditional LTM configuration based on L1 measurement;

[0535] Conditional LTM configuration based on layer 3 L3 measurements;

[0536] Unconditional LTM configuration based on L1 measurement;

[0537] Unconditional LTM configuration based on L3 measurements.

[0538] In some embodiments, the occurrence of mobility failure includes one or more of the following mobility failures:

[0539] The terminal experiences a radio link failure (RLF) in the source cell.

[0540] The terminal execution condition LTM failed.

[0541] The terminal attempted unconditional LTM, but the execution failed.

[0542] The terminal successfully performed conditional LTM, but an RLF occurred in the target cell;

[0543] The terminal successfully performed unconditional LTM, but an RLF occurred in the target cell.

[0544] In some embodiments, the occurrence of a mobility critical failure includes the occurrence of one or more of the following mobility critical failures:

[0545] The time alignment timer TAT corresponding to the time alignment TA value of the target cell sent by the network-side device exceeds the first preset threshold.

[0546] The TAT timeout corresponding to the TA value of the target cell sent by the network-side device, and the terminal performs RACH-less access without random access procedure based on the TA value measured by the terminal (UE-based TA).

[0547] When the TAT timeout corresponding to the TA value of the target cell sent by the network-side device, the terminal performs cell access based on random access procedure (RACH-based access).

[0548] The terminal accesses an LTM candidate cell based on a network command. The LTM candidate cell is configured with execution conditions, but the execution conditions are not met.

[0549] The network-side equipment provides TA values ​​for non-target LTM candidate cells, but does not provide TA values ​​for target cells;

[0550] For L1 execution condition evaluation, during the TTT operation, if the service beam is changed, the L1 execution condition is met, triggering LTM execution and LTM execution is successful. This triggering condition can also be used for unconditional LTM. That is, for L1 execution condition evaluation, during the TTT operation, if the service beam is changed, unconditional LTM execution is received, and LTM execution is successful, it can also be used as the triggering condition for recording the first success information.

[0551] The T310 timer of the source cell exceeded the second preset threshold;

[0552] The T312 timer of the source cell exceeded the third preset threshold;

[0553] The T304 timer in the target cell has exceeded the fourth preset threshold.

[0554] In some embodiments, the first failure-related information and / or the first success-related information includes any one or a combination of the following:

[0555] Execution condition information;

[0556] Time-related information;

[0557] Beam-related information;

[0558] First indication information, the first indication information is used to indicate that the current or most recent switch type is conditional LTM;

[0559] L1 measurement results information for conditional LTM candidate cells or candidate beams;

[0560] L3 measurement results information for conditional LTM candidate cells or candidate beams

[0561] L1 measurement results information for the serving cell, target cell, or neighboring cells;

[0562] L3 measurement results information for the serving cell, target cell, or neighboring cells;

[0563] The received conditional LTM candidate cell or candidate beam or target cell or target beam TA value;

[0564] The reason value for triggering the successful cell change report record is used to indicate the reason for triggering the recording of the first successful related information.

[0565] In some embodiments, the execution condition-related information includes any one or a combination of the following:

[0566] The second indication information is used to indicate whether the neighboring cell or LTM candidate cell is configured with LTM execution conditions.

[0567] A first list of conditional LTM candidate cells and / or execution conditions;

[0568] The third indication information is used to indicate the type of LTM execution conditions;

[0569] A second list of LTM candidate cells and / or execution conditions configured for each LTM candidate cell when the LTM candidate cell is the serving cell;

[0570] A third list of conditional LTM candidate cells and / or execution conditions when the source cell is the serving cell;

[0571] A fourth list of conditional LTM candidate cells and / or execution conditions when the target cell is the serving cell;

[0572] For a conditional LTM candidate cell, the first L1 or L3 execution condition that is met;

[0573] For a conditional LTM candidate cell, the time interval between two satisfied L1 or L3 execution conditions;

[0574] The fourth indication information, for a conditional LTM candidate cell, is used to indicate that the L3 execution conditions configured for the conditional LTM candidate cell are the execution conditions of conditional handover CHO, or the execution conditions of LTM, or the execution conditions that include both conditional handover CHO and LTM.

[0575] In some embodiments, the time-related information includes any one or a combination of the following:

[0576] The time interval from the start of LTM execution condition evaluation to the occurrence of failure;

[0577] The TAT configuration duration corresponding to the TA of the LTM candidate cell;

[0578] The TAT runtime of the TA for LTM candidate cells;

[0579] The time elapsed from the last time the TA value of a conditional LTM candidate cell was received until a failure occurred or a cell change was executed.

[0580] In some embodiments, the beam-related information includes any one or a combination of the following:

[0581] Service beam information for the assessment;

[0582] Beam information of candidate cells participating in the evaluation;

[0583] The fifth indication information is used to indicate whether the serving beam has been changed during the TTT operation;

[0584] Service beam identification information before and after replacement;

[0585] Service beam measurement results before and after the update;

[0586] Source beam information for executing cell changes;

[0587] Target beam information for cell modification.

[0588] In some embodiments, the first configuration information is the configuration information for adding / changing subsequent CPAC in the primary cell PSCell of the continuous condition secondary cell group.

[0589] In some embodiments, the first failure-related information and / or the first success-related information includes any one or a combination of the following:

[0590] The sixth indication information is used to indicate whether the neighboring cell is configured with subsequent CPAC execution conditions or whether the neighboring cell is a subsequent CPAC candidate cell;

[0591] A fifth list of other subsequent CPAC candidate cells and / or execution conditions configured for each subsequent CPAC candidate cell when the subsequent CPAC candidate cell is the serving cell;

[0592] If the source cell is the serving cell, then the sixth list of subsequent CPAC candidate cells and / or execution conditions;

[0593] If the target cell is the serving cell, then the seventh list of subsequent CPAC candidate cells and / or execution conditions;

[0594] For a subsequent CPAC candidate cell, the first execution condition that is met;

[0595] For a subsequent CPAC candidate cell, the time interval between two satisfied execution conditions.

[0596] In some embodiments, the first sending module 72 is used to send a seventh indication information to the network-side device, the seventh indication information being used to indicate that the terminal stores the first failure-related information and / or the first success-related information.

[0597] In some embodiments, the terminal includes a third receiving module for receiving an eighth indication message sent by a network-side device, the eighth indication message being used to instruct the terminal to report the first failure-related information and / or the first success-related information.

[0598] Figure 8 is a third schematic diagram of the network-side device provided in this embodiment of the present disclosure. As shown in Figure 8, the network-side device includes:

[0599] The first receiving module 81 is used to receive first failure-related information and / or first success-related information sent by the terminal; the first failure-related information and / or first success-related information are recorded by the terminal when it stores first configuration information and a mobility failure and / or critical failure occurs; the first configuration information includes configuration information of one or more candidate cells, and at least one candidate cell is configured with cell change execution conditions.

[0600] In some embodiments, the network-side device includes a second transmitting module, configured to transmit the first configuration information to the terminal, wherein the first configuration information is LTM configuration information, and the LTM configuration information includes any one or a combination of the following:

[0601] L1-based conditional LTM configuration;

[0602] L3-based conditional LTM configuration;

[0603] L1-based unconditional LTM configuration;

[0604] L3-based unconditional LTM configuration.

[0605] In some embodiments, the network-side device includes a second sending module, which is used to send the first configuration information to the terminal, wherein the first configuration information is subsequent CPAC configuration information.

[0606] In some embodiments, the network-side device includes a first receiving module 81 for receiving a seventh indication information sent by the terminal, the seventh indication information being used to indicate that the terminal stores the first failure-related information and / or the first success-related information.

[0607] In some embodiments, the network-side device includes a second sending module, which is used to send an eighth indication message to the terminal, the eighth indication message being used to instruct the terminal to report the first failure-related information and / or the first success-related information.

[0608] In some embodiments, the network-side device sends the first failure-related information and / or the first success-related information to the source node or source central unit CU via the Xn / X2 interface, or sends it to the failed node or failed CU; or

[0609] The failed node or failed CU sends the first failure-related information and / or the first success-related information to the source node or source CU via the Xn / X2 interface; or

[0610] The source node or source CU sends the first failure-related information and / or the first success-related information to the source distributed unit DU via the F1 interface.

[0611] Figure 9 is a fourth structural schematic diagram of the network-side device provided in this embodiment of the present disclosure. As shown in Figure 9, the network-side device includes a second receiving module 91 and an optimization module 92, wherein:

[0612] The second receiving module 91 is used to receive a first report and / or a secondary cell group failure information message (SCGFailureInformation), and to search for first configuration information in the terminal's context information. The first report includes one or more of a radio link failure report (RLF report), a successful handover report (SHR), and a successful secondary cell group primary cell addition or change report (SPR). The first configuration information is recorded in the terminal's context information and is at least one of LTM configuration information and subsequent CPAC configuration information. The optimization module 92 is used to perform failure and / or critical failure optimization based on at least one of the received first report, the secondary cell group failure information message (SCGFailureInformation), and the searched first configuration information.

[0613] It should be noted that the apparatus provided in this embodiment can implement all the method steps implemented in the corresponding method embodiments and achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiments will not be described in detail here.

[0614] It should be noted that the division of units in the embodiments of this disclosure is illustrative and only represents one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of this disclosure can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in hardware or as software functional units.

[0615] If the integrated unit is implemented as 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 this disclosure, in essence, or the part that contributes to related technologies, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this disclosure. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0616] In some embodiments, a computer program product is also provided, which includes a computer program that can be stored on a non-transitory readable storage medium. When the computer program is executed by a processor, the computer enables the processor to perform the information processing methods provided in the above embodiments.

[0617] Specifically, the computer program products provided in this disclosure can implement all the method steps implemented in the above method embodiments and can achieve the same technical effects. Here, the parts that are the same as those in the method embodiments and the beneficial effects will not be described in detail.

[0618] In some embodiments, a non-transient readable storage medium is also provided, which stores a computer program for causing a processor to execute the information processing methods provided in the various method embodiments where the execution subject is a terminal or a network-side device.

[0619] The non-transiently readable storage medium provided in this disclosure can implement all the method steps implemented by the method embodiments with the execution subject being a terminal, or by the method embodiments with the execution subject being a network-side device, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiments and the beneficial effects will not be described in detail.

[0620] In some embodiments, a computer-readable storage medium is also provided, the computer-readable storage medium storing a computer program for causing a processor to execute the information processing methods provided in the various method embodiments where the execution subject is a terminal or a network-side device.

[0621] The computer-readable storage medium provided in this disclosure can implement all the method steps implemented by the method embodiments with the execution subject being a terminal, or the method embodiments with the execution subject being a network-side device, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiments and the beneficial effects will not be described in detail.

[0622] The processor-readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to magnetic memory (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO)), optical memory (e.g., CD, DVD, BD, HVD), and semiconductor memory (e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)).

[0623] The technical solutions provided in this disclosure can be applied to a variety of systems. For example, applicable systems may include Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, Long Term Evolution Advanced (LTE-A) systems, Universal Mobile Telecommunications System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) systems, 5G New Radio (NR) systems and their evolved communication systems, and 6G (sixth generation mobile communication technology) systems. These systems may include terminals and network equipment. The systems may also include a core network component, such as an Evolved Packet Core (EPC), a 5G core network (5GC), or a 6G core network.

[0624] The terminals disclosed in this embodiment can be devices that provide voice and / or data connectivity to users, handheld devices with wireless connectivity, or other processing devices connected to a wireless modem. The names of the terminals may differ in different systems; for example, in a 5G system, a terminal may be called User Equipment (UE). Wireless terminals can communicate with one or more core networks (CNs) via a Radio Access Network (RAN). Wireless terminals can be mobile terminals, such as mobile phones (or "cellular" phones) and computers with mobile terminals, for example, portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices that exchange voice and / or data with the RAN. Examples include Personal Communication Service (PCS) phones, cordless phones, Session Initiated Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). The wireless terminal may also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal, user agent, or user device, but is not limited to these terms in the embodiments disclosed herein.

[0625] The access network entity involved in this disclosure can be a base station, which may include multiple cells providing services to terminals. Depending on the specific application, the base station may also be called an access point, or a device in the access network that communicates with the wireless terminal through one or more sectors on the air interface, or other names. The access network entity can be used to exchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The access network entity can also coordinate the attribute management of the air interface. For example, the access network entity involved in this disclosure can be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a base station (NodeB) in Wide-band Code Division Multiple Access (WCDMA), an evolved Node B (eNB or e-NodeB) in a long term evolution (LTE) system, a 5G base station (gNB) in a next generation system, a Home evolved Node B (HeNB), a relay node, a femto, a pico, etc., and is not limited in this disclosure. In some network structures, the access network entity may include centralized unit (CU) nodes and distributed unit (DU) nodes, and the centralized unit and distributed unit may be geographically separated.

[0626] Network devices and terminal devices can each use one or more antennas to perform multiple-input multiple-output (MIMO) transmission. MIMO transmission can be single-user MIMO or multi-user MIMO. Depending on the configuration and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, and can also be diversity transmission, precoding transmission, or beamforming transmission, etc.

[0627] In some embodiments, a chip product is also provided, wherein the chip product stores a computer program, the computer program being used to cause the chip product to execute the information processing methods provided in the above-described method embodiments.

[0628] Specifically, the chip products provided in this disclosure can implement all the method steps implemented in the above method embodiments and achieve the same technical effects. Here, the parts that are the same as those in the method embodiments and the beneficial effects will not be described in detail.

[0629] Those skilled in the art will understand that embodiments of this disclosure can be provided as methods, systems, or computer program products. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0630] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in one or more flowchart illustrations and / or one or more block diagrams.

[0631] These processor-executable instructions may also be stored in a processor-readable memory that can instruct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means that implement the functions specified in one or more flowcharts and / or one or more block diagrams.

[0632] These processor-executable instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and / or one or more block diagrams.

[0633] Obviously, those skilled in the art can make various modifications and variations to this disclosure without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims of this disclosure and their equivalents, this disclosure is also intended to include such modifications and variations.

Claims

1. An information processing method applied to a terminal, the method comprising: In the event of a mobility failure and / or critical failure, the system records first failure-related information and / or first success-related information, where first configuration information is stored and mobility failure and / or critical failure occur. The first configuration information includes configuration information for one or more candidate cells, and at least one candidate cell is configured with conditions for cell change execution. Send the first failure-related information and / or the first success-related information to the network-side device.

2. The information processing method according to claim 1, wherein, The first configuration information is mobility LTM configuration information triggered by Layer 1 (L1) or Layer 2 (L2), and the LTM configuration information includes any one or a combination of the following: Conditional LTM configuration based on L1 measurement; Conditional LTM configuration based on layer 3 L3 measurements; Unconditional LTM configuration based on L1 measurement; Unconditional LTM configuration based on L3 measurements.

3. The information processing method according to claim 1 or 2, wherein, The occurrence of mobility failure includes one or more of the following: The terminal experiences a radio link failure (RLF) in the source cell. The terminal execution condition LTM failed. The terminal attempted unconditional LTM, but the execution failed. The terminal successfully performed conditional LTM, but an RLF occurred in the target cell; The terminal successfully performed unconditional LTM, but an RLF occurred in the target cell.

4. The information processing method according to claim 1 or 2, wherein, The occurrence of a mobility critical failure includes one or more of the following: The time alignment timer TAT corresponding to the time alignment TA value of the target cell sent by the network-side device exceeds the first preset threshold. The TAT timeout corresponding to the TA value of the target cell sent by the network-side device, and the terminal performs RACH-less access without random access procedure based on the TA value measured by the terminal (UE-based TA). When the TAT timeout corresponding to the TA value of the target cell sent by the network-side device, the terminal performs cell access based on random access procedure (RACH-based access). The terminal accesses an LTM candidate cell based on a network command. The LTM candidate cell is configured with execution conditions, but the execution conditions are not met. The network-side equipment provides TA values ​​for non-target LTM candidate cells, but does not provide TA values ​​for target cells; For L1 execution condition evaluation, during the TTT (Time To Trigger) operation, if the service beam is changed and the L1 execution condition is met, LTM (Learning Time Trigger) is triggered and LTM execution is successful. The T310 timer of the source cell exceeded the second preset threshold; The T312 timer of the source cell exceeded the third preset threshold; The T304 timer in the target cell has exceeded the fourth preset threshold.

5. The information processing method according to claim 1 or 2, wherein, The first failure-related information and / or the first success-related information include any one or a combination of the following: Execution condition information; Time-related information; Beam-related information; First indication information, the first indication information is used to indicate that the current or most recent switch type is conditional LTM; L1 measurement results information for conditional LTM candidate cells or candidate beams; L3 measurement results information for conditional LTM candidate cells or candidate beams; L1 measurement results information for the serving cell, target cell, or neighboring cells; L3 measurement results information for the serving cell, target cell, or neighboring cells; The received conditional LTM candidate cell or candidate beam or target cell or target beam TA value; The reason value for triggering the successful cell change report record is used to indicate the reason for triggering the recording of the first successful related information.

6. The information processing method according to claim 5, wherein, The execution condition-related information includes any one or a combination of the following: The second indication information is used to indicate whether the neighboring cell or LTM candidate cell is configured with LTM execution conditions. A first list of conditional LTM candidate cells and / or execution conditions; The third indication information is used to indicate the type of LTM execution conditions; A second list of LTM candidate cells and / or execution conditions configured for each LTM candidate cell when the LTM candidate cell is the serving cell; A third list of conditional LTM candidate cells and / or execution conditions when the source cell is the serving cell; A fourth list of conditional LTM candidate cells and / or execution conditions when the target cell is the serving cell; For a conditional LTM candidate cell, the first L1 or L3 execution condition that is met; For a conditional LTM candidate cell, the time interval between two satisfied L1 or L3 execution conditions; The fourth indication information, for a conditional LTM candidate cell, is used to indicate that the L3 execution conditions configured for the conditional LTM candidate cell are the execution conditions of conditional handover CHO, or the execution conditions of LTM, or the execution conditions that include both conditional handover CHO and LTM.

7. The information processing method according to claim 5, wherein, The time-related information includes any one or a combination of the following: The time interval from the start of LTM execution condition evaluation to the occurrence of failure; The TAT configuration duration corresponding to the TA of the LTM candidate cell; The TAT runtime of the TA for LTM candidate cells; The time elapsed from the last time the TA value of a conditional LTM candidate cell was received until a failure occurred or a cell change was executed.

8. The information processing method according to claim 5, wherein, The beam-related information includes any one or a combination of the following: Service beam information for the assessment; Beam information of candidate cells participating in the evaluation; The fifth indication information is used to indicate whether the serving beam has been changed during the TTT operation; Service beam identification information before and after replacement; Service beam measurement results before and after the update; Source beam information for executing cell changes; Target beam information for cell modification.

9. The information processing method according to claim 1, wherein, The first configuration information is the configuration information for adding / changing subsequent CPAC in the PSCell of the primary cell of the secondary cell group under continuous conditions.

10. The information processing method according to claim 1 or 9, wherein, The first failure-related information and / or the first success-related information include any one or a combination of the following: The sixth indication information is used to indicate whether the neighboring cell is configured with subsequent CPAC execution conditions or whether the neighboring cell is a subsequent CPAC candidate cell; A fifth list of other subsequent CPAC candidate cells and / or execution conditions configured for each subsequent CPAC candidate cell when the subsequent CPAC candidate cell is the serving cell; If the source cell is the serving cell, then the sixth list of subsequent CPAC candidate cells and / or execution conditions; If the target cell is the serving cell, then the seventh list of subsequent CPAC candidate cells and / or execution conditions; For a subsequent CPAC candidate cell, the first execution condition that is met; For a subsequent CPAC candidate cell, the time interval between two satisfied execution conditions.

11. The information processing method according to claim 1, wherein, The method includes: A seventh indication message is sent to the network-side device, the seventh indication message being used to indicate that the terminal stores the first failure-related information and / or the first success-related information.

12. The information processing method according to claim 1, wherein, The method includes: The terminal receives an eighth instruction message from the network-side device, the eighth instruction message being used to instruct the terminal to report the first failure-related information and / or the first success-related information.

13. An information processing method applied to a network-side device, the method comprising: The receiving terminal sends the first failure-related information and / or the first success-related information. The first failure-related information and / or the first success-related information are recorded by the terminal when it stores the first configuration information and a mobility failure and / or critical failure occurs; the first configuration information includes the configuration information of one or more candidate cells, and at least one candidate cell is configured with the execution conditions for cell change.

14. The information processing method according to claim 13, wherein, The method further includes: The first configuration information is sent to the terminal. The first configuration information is LTM configuration information, which includes any one or a combination of the following: L1-based conditional LTM configuration; L3-based conditional LTM configuration; L1-based unconditional LTM configuration; L3-based unconditional LTM configuration.

15. The information processing method according to claim 13, wherein, The method further includes: The first configuration information is sent to the terminal, and the first configuration information is subsequent CPAC configuration information.

16. The information processing method according to claim 13, wherein, The method further includes: The terminal receives a seventh indication message, which indicates that the terminal stores the first failure-related information and / or the first success-related information.

17. The information processing method according to claim 13, wherein, The method further includes: Send an eighth instruction message to the terminal, the eighth instruction message being used to instruct the terminal to report the first failure-related information and / or the first success-related information.

18. The information processing method according to claim 13, wherein, The method further includes: Send the first failure-related information and / or the first success-related information to the source node or source central unit CU via the Xn / X2 interface, or send them to the failure node or failure CU; or The failed node or failed CU sends the first failure-related information and / or the first success-related information to the source node or source CU via the Xn / X2 interface; or The source node or source CU sends the first failure-related information and / or the first success-related information to the source distributed unit DU via the F1 interface.

19. An information processing method, wherein, Applied to network devices, including: The terminal receives a first report and / or a secondary cell group failure information message (SCGFailureInformation), and searches for first configuration information in the terminal's context information. The first report includes one or more of a radio link failure report (RLF), a successful handover report (SHR), and a successful secondary cell group primary cell addition or change report (SPR). The first configuration information is recorded in the terminal's context information and is at least one of LTM configuration information and subsequent CPAC configuration information. Based on at least one of the received first report, the secondary cell group failure information message SCGFailureInformation, and the found first configuration information, failure and / or critical failure optimization is performed.

20. A terminal, comprising a memory, a transceiver, and a processor; Memory, used to store computer programs; The transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations: In the event of a mobility failure and / or critical failure, the system records first failure-related information and / or first success-related information, where first configuration information is stored and mobility failure and / or critical failure occur. The first configuration information includes configuration information for one or more candidate cells, and at least one candidate cell is configured with conditions for cell change execution. Send the first failure-related information and / or the first success-related information to the network-side device.

21. A network-side device, comprising a memory, a transceiver, and a processor; Memory, used to store computer programs; Transceiver, used to send and receive data under the control of the processor; Processor, configured to read the computer program in the memory and perform the following operations: The receiving terminal sends the first failure-related information and / or the first success-related information. The first failure-related information and / or the first success-related information are recorded by the terminal when it stores the first configuration information and a mobility failure and / or critical failure occurs; the first configuration information includes the configuration information of one or more candidate cells, and at least one candidate cell is configured with the execution conditions for cell change.

22. A network-side device, comprising a memory, a transceiver, and a processor; Memory, used to store computer programs; The transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations: The terminal receives a first report and / or a secondary cell group failure information message (SCGFailureInformation), searches for first configuration information in the terminal's context information, wherein the first report includes one or more of a radio link failure report (RLF report), a successful handover report (SHR), and a successful secondary cell group primary cell addition or change report (SPR); the first configuration information is recorded in the terminal's context information and is at least one of LTM configuration information and subsequent CPAC configuration information. Based on at least one of the received first report, the secondary cell group failure information message SCGFailureInformation, and the found first configuration information, failure and / or critical failure optimization is performed.

23. A terminal, comprising: The first recording module is used to record first failure-related information and / or first success-related information when a mobility failure and / or critical failure occurs, in the case of storing first configuration information; the first configuration information includes configuration information of one or more candidate cells, and at least one candidate cell is configured with cell change execution conditions; The first sending module is used to send the first failure-related information and / or the first success-related information to the network-side device.

24. A network-side device, comprising: The first receiving module is used to receive first failure-related information and / or first success-related information sent by the terminal; The first failure-related information and / or the first success-related information are recorded by the terminal when it stores the first configuration information and a mobility failure and / or critical failure occurs; the first configuration information includes the configuration information of one or more candidate cells, and at least one candidate cell is configured with the execution conditions for cell change.

25. A network-side device, comprising: The second receiving module receives a first report and / or a secondary cell group failure information message (SCGFailureInformation), searches for first configuration information in the terminal's context information, wherein the first report includes one or more of a radio link failure report (RLF report), a successful handover report (SHR), and a successful secondary cell group primary cell addition or change report (SPR); the first configuration information is recorded in the terminal's context information, and the first configuration information is at least one of LTM configuration information and subsequent CPAC configuration information. The optimization module performs failure and / or critical failure optimization based on at least one of the received first report, the secondary cell group failure information message SCGFailureInformation, and the found first configuration information.

26. A non-transitory readable storage medium, the processor-readable storage medium storing a program for causing a processor to perform the information processing method as described in any one of claims 1 to 19.

27. A processor-readable storage medium storing a program for causing a processor to perform the information processing method as described in any one of claims 1 to 19.

28. A chip product, wherein the chip product stores a program for causing the chip product to perform the information processing method as described in any one of claims 1 to 19.

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