Information processing method, terminal, network device, apparatus, and storage medium

Abstract

The present disclosure provides an information processing method, a terminal, a network device, an apparatus, and a storage medium. The method comprises: when a terminal stores L1 / L2 triggered mobility (LTM) configuration information and a mobility issue occurs, recording, in a first report and / or a secondary cell group failure information message, first information used for indicating an LTM type, wherein the first report comprises one or more of a radio link failure report, a successful handover report, and a successful primary secondary-cell-group cell addition or change report; and sending the first report and / or the secondary cell group failure information message to a network device.

Description

Information processing methods, terminals, network equipment, devices and storage media

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202510071932.3, filed on January 16, 2025, entitled "Information Processing Method, Terminal, Network Device, Apparatus and Storage Medium", 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, terminal, network device, apparatus, and storage medium. Background Technology

[0004] Layer 1 or Layer 2 triggered mobility (L1 / L2 Triggered Mobility, LTM) supports both L1 measurement-based LTM and L3 measurement-based LTM. For L1 and L3 measurement-based LTM, when a mobility issue occurs, the user equipment (UE) records the relevant information and reports it to the network. In related technologies, the network performs mobility optimization based on the mobility issue information reported by the UE, which can easily lead to incorrect optimization. Summary of the Invention

[0005] This disclosure provides an information processing method, terminal, network device, apparatus, and storage medium to address the problem of erroneous optimization that easily occurs when optimizing network mobility.

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

[0007] In the event that a mobility LTM configuration information triggered by Layer 1 or Layer 2 is stored and a mobility problem occurs, first information indicating the LTM type is recorded in the first report and / or secondary cell group failure information message; the first report includes one or more of the following: radio link failure report, successful handover report, successful secondary cell group primary cell addition or change report;

[0008] Send the first report and / or secondary cell group failure information message to the network device.

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

[0010] Receive a first report and / or a secondary cell group failure information message, wherein the first report and / or secondary cell group failure information message records first information for indicating the LTM type; wherein the first report includes one or more of the following: radio link failure report, successful handover report, and successful secondary cell group primary cell addition or change report;

[0011] Based on the first information, the first network node is determined, and the first network node is the optimized node for mobility issues.

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

[0013] Record the first information indicating the LTM type in the terminal's context information;

[0014] The receiving terminal sends a first report and / or a secondary cell group failure information message; wherein the first report includes one or more of the following: a radio link failure report, a successful handover report, and a successful secondary cell group primary cell addition or change report;

[0015] The first information is searched in the context information of the terminal. Based on the obtained first information, the first network node is determined. The first network node is the optimization node for mobility issues.

[0016] Fourthly, this disclosure also provides a terminal, including a memory, a transceiver, and a processor;

[0017] 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:

[0018] In the event that a mobility LTM configuration information triggered by Layer 1 or Layer 2 is stored and a mobility problem occurs, first information indicating the LTM type is recorded in the first report and / or secondary cell group failure information message; the first report includes one or more of the following: radio link failure report, successful handover report, successful secondary cell group primary cell addition or change report;

[0019] Send the first report and / or secondary cell group failure information message to the network device.

[0020] Fifthly, this disclosure also provides a network device, including a memory, a transceiver, and a processor;

[0021] 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:

[0022] Receive a first report and / or a secondary cell group failure information message, wherein the first report and / or secondary cell group failure information message records first information for indicating the LTM type; wherein the first report includes one or more of the following: radio link failure report, successful handover report, and successful secondary cell group primary cell addition or change report;

[0023] Based on the first information, the first network node is determined, and the first network node is the optimized node for mobility issues.

[0024] Sixthly, this disclosure also provides a network device, including a memory, a transceiver, and a processor;

[0025] 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:

[0026] Record the first information indicating the LTM type in the terminal's context information;

[0027] The receiving terminal sends a first report and / or a secondary cell group failure information message; wherein the first report includes one or more of the following: a radio link failure report, a successful handover report, and a successful secondary cell group primary cell addition or change report;

[0028] The first information is searched in the context information of the terminal. Based on the obtained first information, the first network node is determined. The first network node is the optimization node for mobility issues.

[0029] In a seventh aspect, this disclosure also provides an information processing apparatus, comprising:

[0030] The first recording unit is used to record first information indicating the LTM type in the first report and / or secondary cell group failure information message when the LTM configuration information triggered by Layer 1 or Layer 2 is stored and a mobility problem occurs; the first report includes one or more of the following: radio link failure report, successful handover report, and successful secondary cell group primary cell addition or change report;

[0031] The first sending unit is used to send a first report and / or secondary cell group failure information message to the network device.

[0032] Eighthly, this disclosure also provides an information processing apparatus, comprising:

[0033] The second receiving unit is configured to receive a first report and / or a secondary cell group failure information message, wherein the first report and / or the secondary cell group failure information message records first information for indicating the LTM type; wherein the first report includes one or more of the following: radio link failure report, successful handover report, and successful secondary cell group primary cell addition or change report;

[0034] The first determining unit is used to determine the first network node based on the first information, wherein the first network node is an optimized node for mobility problems.

[0035] Ninthly, this disclosure also provides an information processing apparatus, comprising:

[0036] The second recording unit is used to record first information indicating the LTM type in the context information of the terminal;

[0037] The third receiving unit is used to receive a first report and / or secondary cell group failure information message sent by the terminal; wherein the first report includes one or more of the following: radio link failure report, successful handover report, and successful addition or change of primary cell in secondary cell group;

[0038] The second determining unit is used to search for first information in the context information of the terminal, and determine the first network node based on the obtained first information. The first network node is an optimization node for mobility issues.

[0039] 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.

[0040] In an eleventh aspect, this disclosure also provides a communication device, wherein the communication device stores a program for causing the communication device 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.

[0041] In a twelfth aspect, 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.

[0042] In a thirteenth 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.

[0043] The information processing method, terminal, network device, apparatus, and storage medium provided in this disclosure allow a UE to record first information indicating the LTM type in reports and / or messages such as RLF report, SHR, SPR, and secondary cell group failure information message when LTM configuration information is stored and a mobility problem occurs. This enables the network device to determine the optimization node for the mobility problem based on the first information recorded in the reports and / or messages after receiving them, thereby performing mobility optimization more accurately and reducing erroneous optimization problems. Attached Figure Description

[0044] 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.

[0045] Figure 1 is a schematic flowchart of one of the information processing methods provided in this embodiment of the present disclosure;

[0046] Figure 2 is a second schematic flowchart of the information processing method provided in the embodiments of this disclosure;

[0047] Figure 3 is a third schematic flowchart of the information processing method provided in this embodiment of the present disclosure;

[0048] Figure 4 is a schematic diagram of the structure of the terminal provided in an embodiment of this disclosure;

[0049] Figure 5 is a schematic diagram of the structure of a network device provided in an embodiment of this disclosure;

[0050] Figure 6 is a second schematic diagram of the structure of the network device provided in the embodiment of this disclosure;

[0051] Figure 7 is a schematic diagram of the structure of an information processing device provided in an embodiment of this disclosure;

[0052] Figure 8 is a second schematic diagram of the structure of the information processing device provided in the embodiments of this disclosure;

[0053] Figure 9 is a third schematic diagram of the structure of the information processing device provided in the embodiments of this disclosure. Detailed Implementation

[0054] 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.

[0055] In this disclosure, the term "multiple" refers to two or more, and other quantifiers are similar.

[0056] 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.

[0057] 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.

[0058] To facilitate a clearer understanding of the technical solutions of the embodiments of this disclosure, some technical content related to the embodiments of this disclosure will be introduced first.

[0059] 1. LTM mechanism

[0060] In related technologies, LTM supports L1 measurement-based LTM and L3 measurement-based LTM. These two types of LTM are triggered by different nodes based on different measurement results. For L1 measurement-based LTM, the source distributed unit (source DU) makes a handover decision based on the L1 measurement results reported by the UE and directly sends an LTM cell switch command to the UE. For L3 measurement-based LTM, the centralized unit (CU) makes a handover decision based on the L3 measurement results reported by the UE and notifies the source DU to send an LTM cell switch command to the UE through the F1 interface (the interface between the CU and DU).

[0061] In the LTM mechanism of related technologies, the network pre-configures multiple candidate cell configurations and their L1 measurement configurations for the UE. The UE performs L1 measurements based on the network-configured L1 measurement settings and reports them. Based on the L1 measurement results reported by the UE, the network sends an LTM cell change command to the UE. This LTM cell change command is sent to the UE through the Media Access Control-Control Element (MAC CE). When the UE receives the LTM cell change command from the network, it will perform an LTM cell change to access the target cell. The UE will maintain its LTM configuration and continue performing L1 measurements, continuing the subsequent LTM process.

[0062] The LTM mechanism of related technologies also supports the CU to make handover decisions based on the L3 measurement results reported by the UE, and notify the source DU of the decision results through the F1 interface. The source DU then sends an LTM cell change command to the UE. Similar to L1 measurement-based LTM, when the UE receives this L3 measurement-based LTM cell change command, the UE performs LTM cell change and accesses the target cell.

[0063] In addition, the LTM mechanism will also support inter-CU LTM and conditional LTM.

[0064] 2. Relevant reports or news

[0065] Radio Link Failure Report (RLF report): This report records information related to radio link failures or handover failures on the Master Cell Group (MCG) side. This report is not submitted immediately; the UE can store it for 48 hours.

[0066] 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; the UE can store it for 48 hours.

[0067] Successful PSCell Addition or Change Report (SPR): This report records information related to successful PSCell additions or changes (but near-failures) on the Secondary Cell Group (SCG) side. This report is not submitted immediately; the UE can store it for 48 hours. PSCell refers to the Primary SCG Cell (PSCell).

[0068] SCG Failure Information Message: This message is used to report information related to SCG-side radio link failure or PSCell addition or change failure. This message is reported immediately.

[0069] In related technologies, LTM supports L1 measurement-based LTM and L3 measurement-based LTM. When mobility issues occur, such as LTM execution failure, the UE records an RLF report and reports it to the network. When the network receives this RLF report, it does not know whether the LTM execution failure associated with this RLF report was caused by the LTM execution triggered by the source DU based on L1 measurement results or by the LTM execution triggered by the CU based on L3 measurement results. Therefore, the network does not know whether the CU or the source DU should perform optimization, which may lead to incorrect optimization. For example, if the LTM execution was triggered by the CU based on L3 measurement results, after receiving this RLF report, the CU is unsure whether to optimize its own handover decision and handover-related parameters or to send this RLF report to the source DU via the F1 interface for optimization. Therefore, when the CU finds that the LTM execution has failed, it may send this RLF report to the source DU for optimization, causing the source DU's originally correct handover decision and handover-related parameters to be incorrectly optimized.

[0070] The solutions provided by the embodiments of this disclosure enable networks to more accurately identify optimized nodes for mobility issues and reduce the problem of incorrect optimization.

[0071] Figure 1 is a flowchart of one of the information processing methods provided in this disclosure. The method is applied to a terminal. As shown in Figure 1, the method includes the following steps 101 and 102.

[0072] Step 101: In the case of storing mobility LTM configuration information triggered by Layer 1 or Layer 2 and a mobility problem occurs, record first information indicating the LTM type in the first report and / or secondary cell group failure information message; the first report includes one or more of the following: radio link failure report, successful handover report, successful secondary cell group primary cell addition or change report.

[0073] Step 102: Send the first report and / or secondary cell group failure information message to the network device.

[0074] Specifically, the LTM configuration information in this disclosure can be either unconditional LTM configuration information or conditional LTM configuration information, without any limitation. Unconditional LTM configuration information means that the network has not configured LTM candidate cell execution conditions for the UE, and the network instructs the UE to execute LTM through network signaling, such as notifying the UE to execute LTM through MAC CE signaling. Conditional LTM configuration information means that the network configures LTM candidate cell execution conditions for the UE, and the UE can execute LTM by evaluating the execution conditions. For example, when the UE evaluates that the execution conditions of a certain LTM candidate cell are met, the UE can execute LTM to access this LTM candidate target cell. This execution condition can be an L1 execution condition (based on L1 measurement results) or an L3 execution condition (based on L3 measurement results). For L3 execution conditions, it can be the execution condition of reused CHO or the L3 execution condition of newly introduced LTM.

[0075] The LTM can be any LTM supported in the related technologies described above, or other LTMs that will be supported in the future; this disclosure does not limit it.

[0076] Network devices can pre-configure LTM configuration information to UEs. To enable more accurate mobility optimization and reduce erroneous optimization, UEs storing LTM configuration information can record first information indicating the LTM type in reports and / or messages such as RLF reports, SHR, SPR, and secondary cell group failure information messages when a mobility problem occurs (e.g., after the UE determines a mobility problem has occurred). This first information allows the network device to determine which network node caused the mobility problem or which network node should optimize it, thus enabling more accurate identification of the optimization node for the mobility problem.

[0077] It should be noted that for RLF report, SHR, and SPR, these three reports are not reported immediately. The UE can send an available indication to the network device if it has the report stored. For example, the UE can send an RLF report available indication, an SHR available indication, or an SPR available indication to the network device. After receiving the available indication from the UE, if the network device wants to obtain the report information, it can send a UE information request message to the UE. After receiving the UE information request message from the network device, the UE sends a UE information response message to the network device, which carries the RLF report, SHR, or SPR requested by the network device. For the secondary cell group failure information message, this message is reported immediately. The UE does not need to send an available indication to the network device; instead, it sends this message directly to the network device when an SCG failure occurs.

[0078] The information processing method provided in this disclosure allows a UE to record first information indicating the LTM type in reports and / or messages such as RLF report, SHR, SPR, and secondary cell group failure information message when LTM configuration information is stored and a mobility problem occurs. This enables the network device to determine the optimization node for the mobility problem based on the first information recorded in the reports and / or messages after receiving them, thereby performing mobility optimization more accurately and reducing the problem of incorrect optimization.

[0079] In some embodiments, the first information includes one or more of the following:

[0080] First instruction message;

[0081] First execution condition information;

[0082] First measurement result information.

[0083] For example, the UE can record explicit first indication information in reports and / or messages such as RLF report, SHR, SPR, secondary cell group failure information message, etc., to explicitly indicate the LTM type. There are various ways to explicitly indicate the type, which are not limited here.

[0084] For example, the UE can record information such as the first execution condition and the first measurement result in reports and / or messages such as RLF report, SHR, SPR, and secondary cell group failure information message. The UE can implicitly indicate the LTM type through this information. There are many ways to implicitly indicate the type, which are not limited here.

[0085] It should be noted that the execution conditions in the various embodiments of this disclosure can be LTM execution conditions or Conditional Handover (CHO) execution conditions, and this disclosure does not limit them.

[0086] LTM type indications are more flexible through various forms of first information.

[0087] In some embodiments, the first indication information includes one or more of the following indication information:

[0088] The second indication information indicates a Layer 1 based LTM, or indicates a Layer 3 based LTM, or indicates both a Layer 1 based LTM and a Layer 3 based LTM.

[0089] The third indication information indicates whether it is a Layer 1 based LTM, or whether it is a Layer 3 based LTM, or whether it is both a Layer 1 based LTM and a Layer 3 based LTM.

[0090] The fourth indication information indicates the LTM triggered by the distributed unit DU, or the LTM triggered by the centralized unit CU, or the LTM triggered by both DU and CU.

[0091] The fifth indication information indicates whether the LTM is triggered by DU, or whether the LTM is triggered by CU, or whether the LTM is triggered by both DU and CU.

[0092] The sixth instruction information indicates that LTM execution is triggered based on Layer 1 measurement results, or LTM execution is triggered based on Layer 3 measurement results, or LTM execution is triggered based on both Layer 1 and Layer 3 measurement results.

[0093] The seventh indication information indicates whether the LTM execution is triggered based on the Layer 1 measurement results, or whether the LTM execution is triggered based on the Layer 3 measurement results, or whether the LTM execution is triggered based on both Layer 1 and Layer 3 measurement results.

[0094] Specifically, the second indication information indicates a Layer 1-based LTM, a Layer 3-based LTM, or both a Layer 1-based LTM and a Layer 3-based LTM. In some implementations, the second indication information can be an enumeration type, such as ENUMERATED{L1-based LTM, L3-based LTM} or ENUMERATED{L1-based LTM, L3-based LTM, both}. Here, ENUMERATED represents an enumeration, and both represents both a Layer 1-based LTM and a Layer 3-based LTM.

[0095] The third indication information indicates whether it is an L1-based LTM, an L3-based LTM, or both. For example, the third indication information is ENUMERATED{true}, where the parameter value is true. If the third indication information indicates whether it is an L1-based LTM, then the parameter value is true; if the third indication information indicates whether it is an L3-based LTM, then the parameter value is true; if the third indication information indicates whether it is both an L1-based LTM and L3-based LTM, then the parameter value is true.

[0096] The fourth indication information indicates the LTM trigger node, namely DU, CU, or both (i.e., DU and CU). In some embodiments, the DU may be, for example, a source DU, and the CU may be, for example, a source CU; this disclosure is not limiting. For example, the fourth indication information may be ENUMERATED{source DU, CU} or ENUMERATED{source DU, CU, both}.

[0097] The fifth indication information indicates whether the LTM trigger node is a DU, or whether the LTM trigger node is a CU, or whether the LTM trigger node is both a DU and a CU. In some embodiments, the DU may be, for example, a source DU, and the CU may be, for example, a source CU; this disclosure is not limiting. For example, the fifth indication information is ENUMERATED{true}, where the parameter value is true. When the fifth indication information indicates whether the LTM trigger node is a DU, the parameter value true indicates that the LTM trigger node is a DU; when the fifth indication information indicates whether the LTM trigger node is a CU, the parameter value true indicates that the LTM trigger node is a CU; when the fifth indication information indicates whether the LTM trigger node is both a DU and a CU, the parameter value true indicates that the LTM trigger node is both a DU and a CU.

[0098] The sixth indication information indicates LTM execution triggered based on L1 measurement results, or LTM execution triggered based on L3 measurement results, or both (i.e., LTM execution triggered based on both L1 and L3 measurement results). For example, the sixth indication information could be ENUMERATED{based L1 measurement, based L3 measurement} or ENUMERATED{based L1 measurement, based L3 measurement, both}.

[0099] The seventh indication information indicates whether LTM execution is triggered based on L1 measurement results, LTM execution is triggered based on L3 measurement results, or LTM execution is triggered based on both L1 and L3 measurement results. For example, the fourth indication information is ENUMERATED{true}, where the parameter value is true. If the seventh indication information indicates whether LTM execution is triggered based on L1 measurement results, then the parameter value true indicates that LTM execution is triggered based on L1 measurement results; if the seventh indication information indicates whether LTM execution is triggered based on L3 measurement results, then the parameter value true indicates that LTM execution is triggered based on both L1 and L3 measurement results.

[0100] The flexibility of LTM type indication is enhanced through the above-mentioned multiple explicit indication methods.

[0101] In some embodiments, the method further includes:

[0102] Receive the first instruction information sent by the network device.

[0103] Specifically, the network device sends a first indication message to the terminal, which can be sent by a CU or a DU. In various embodiments of this disclosure, the DU can be, for example, a source DU, and the CU can be, for example, a source CU.

[0104] The network device sends a first indication message to the UE, which can then directly record this first indication message in reports and / or messages such as the RLF report, SHR, SPR, and secondary cell group failure information message when mobility issues occur and LTM configuration information is stored. This approach helps reduce the implementation complexity on the UE side.

[0105] In some embodiments, the network device may send the first indication information to the UE before sending the LTM cell change command to the UE or before triggering the LTM cell change execution. From the UE's perspective, the UE will receive the first indication information sent by the network before receiving the LTM cell change command.

[0106] The specific timing of sending the first indication information can depend on the network implementation, as long as the UE receives the first indication information before receiving the LTM cell change command.

[0107] For example, the CU sends the first indication information to the UE in the pre-configured LTM configuration information. This pre-configured LTM configuration information is sent before the LTM cell change command.

[0108] For example, in the case where the CU triggers L3 measurement-based LTM, before the DU sends the LTM cell change command (e.g., when the CU triggers L3 measurement-based LTM, or before the CU triggers L3 measurement-based LTM), the CU sends the first indication information to the UE via Radio Resource Control (RRC) signaling. The RRC signaling could be, for example, an RRC reconfiguration message.

[0109] For example, in the case where the CU triggers L3 measurement-based LTM, the DU sends the first indication information to the UE via L1 signaling or L2 signaling before sending the LTM cell change command. L1 signaling is, for example, Downlink Control Information (DCI). L2 signaling is, for example, MAC CE.

[0110] For example, in the case where the DU triggers L1 measurement-based LTM, before sending the LTM cell change command (e.g., when the DU triggers L1 measurement-based LTM, or before the DU triggers L1 measurement-based LTM), the DU sends the first indication information to the UE via L1 signaling or L2 signaling.

[0111] For example, in the case where the DU triggers L1 measurement-based LTM, before sending the LTM cell change command (e.g., when the DU triggers L1 measurement-based LTM, or before the DU triggers L1 measurement-based LTM), the DU sends the first indication information to the CU, which then sends the first indication information to the UE via RRC signaling. After the CU sends the first indication information to the UE, it can notify the DU of successful transmission. The DU can then send the LTM cell change command after receiving the successful transmission notification from the CU.

[0112] In some embodiments, the network device may carry first indication information in the LTM cell change command. For example, 1 bit may be introduced in the LTM cell change command to indicate the LTM type.

[0113] In some embodiments, first information indicating the LTM type is recorded in the first report and / or secondary cell group failure information message, including:

[0114] Based on the execution conditions, the first instruction information is recorded in the first report and / or auxiliary cell group failure information message.

[0115] Specifically, the execution condition refers to the execution condition on which the UE records the first indication information. Which execution condition(s) the UE uses to record the first indication information can be agreed upon by the protocol, indicated by the network (network configuration), implemented by the UE, or determined through other means; this is not limited here. For example, the execution condition on which the UE records the first indication information can be the execution condition configured in the LTM configuration information. As another example, the execution condition on which the UE records the first indication information can be an LTM execution condition or a CHO execution condition.

[0116] The UE records the first indication information in the first report and / or secondary cell group failure information message based on the execution conditions, without the need for the network to send explicit first indication information, which can save signaling overhead and reduce the implementation complexity on the network side.

[0117] In some embodiments, based on execution conditions, first indication information is recorded in the first report and / or secondary cell group failure information message, including:

[0118] When the execution condition is a Layer 1 execution condition, a first indication information is recorded in the first report and / or secondary cell group failure information message to indicate the first LTM; or,

[0119] When the execution condition is Layer 3 execution condition, a first indication information is recorded in the first report and / or secondary cell group failure information message to indicate the second LTM; or,

[0120] When the execution conditions include both Layer 1 and Layer 3 execution conditions, a first indication information is recorded in the first report and / or secondary cell group failure information message to indicate the first LTM, the second LTM, or the third LTM.

[0121] The first LTM includes any one of the following: LTM based on layer 1, LTM triggered by DU, and LTM execution triggered by layer 1 measurement results.

[0122] The second LTM includes any one of the following: Layer 3-based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results;

[0123] The third LTM includes any of the following:

[0124] Layer 1-based LTM and Layer 3-based LTM;

[0125] LTM triggered by DU and LTM triggered by CU;

[0126] LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

[0127] Specifically, when recording the first instruction information, for any given first instruction information, the specific LTM type indicated by that first instruction information can be determined based on the execution conditions on which the recording of the first instruction information is based.

[0128] For example, when recording a first indication information, if the execution condition on which the first indication information is recorded is an L1 execution condition, then the UE records the first indication information to indicate a first LTM; if the execution condition on which the first indication information is recorded is an L3 execution condition, then the UE records the first indication information to indicate a second LTM; if the execution condition on which the first indication information is recorded is both an L1 execution condition and an L3 execution condition, then the UE records the first indication information to indicate a first LTM, a second LTM, or a third LTM, or the UE combines other methods (such as protocol predefinition or first indication information sent by the network) to determine which LTM type to indicate.

[0129] By recording the first indication information through the above correspondence between the execution condition type and the LTM type, the accuracy of the LTM type indication is ensured, enabling the network to accurately determine the optimization node for mobility issues.

[0130] In some embodiments, based on execution conditions, first indication information is recorded in the first report and / or secondary cell group failure information message, including:

[0131] Based on the execution condition configuration information, a first indication message is recorded in the first report and / or the secondary cell group failure message, or a first indication message is recorded separately for each candidate cell.

[0132] For example, the execution conditions on which the UE records the first indication information can be the execution conditions configured in the LTM configuration information. If the execution conditions are configured per LTM configuration information, that is, the execution condition type of each LTM candidate cell in the LTM configuration information is the same, such as all being L1 execution conditions or all being L3 execution conditions, the UE can record a first indication information in the first report and / or secondary cell group failure information message based on the execution conditions configured in the LTM configuration information. If the execution conditions are configured per candidate cell, that is, the execution condition type of different LTM candidate cells in the LTM configuration information is different, such as some LTM candidate cells being L1 execution conditions and some being L3 execution conditions, the UE can record a first indication information for each candidate cell in the first report and / or secondary cell group failure information message based on the execution conditions configured for each LTM candidate cell.

[0133] In some embodiments, if no LTM cell change execution occurs, such as when an RLF occurs, the UE may record a first indication message in the first report and / or secondary cell group failure message based on the LTM candidate cell execution condition configuration information in the LTM configuration information, or record a first indication message separately for each candidate cell.

[0134] In some embodiments, when an LTM cell change is executed, the UE may record a first indication message in the first report and / or secondary cell group failure message based on the LTM candidate cell execution condition configuration information in the LTM configuration information, or record a first indication message separately for each candidate cell.

[0135] In some embodiments, when an LTM cell change is executed, the UE may record a first indication message for the target cell in the first report and / or secondary cell group failure information message based on the execution conditions of the target cell.

[0136] In some embodiments, the first measurement result information includes any of the following:

[0137] Layer 1 measurement results are used to indicate the first LTM;

[0138] The results of the third-layer measurement are used to indicate the second LTM;

[0139] Layer 1 and Layer 3 measurement results are used to indicate the first LTM, second LTM, or third LTM;

[0140] The first LTM includes any one of the following: LTM based on layer 1, LTM triggered by DU, and LTM execution triggered by layer 1 measurement results.

[0141] The second LTM includes any one of the following: Layer 3-based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results;

[0142] The third LTM includes any of the following:

[0143] Layer 1-based LTM and Layer 3-based LTM;

[0144] LTM triggered by DU and LTM triggered by CU;

[0145] LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

[0146] Specifically, the first information used to indicate the LTM type can be implicit indication information, which can be the first measurement result information, that is, the LTM type can be implicitly indicated by the first measurement result information recorded in the first report and / or secondary cell group failure information message.

[0147] For example, if the first report and / or secondary cell group failure message records an L1 measurement result, the network can consider it an implicit indication of the first LTM.

[0148] For example, if the first report and / or secondary cell group failure message records an L3 measurement result, the network can consider it an implicit indication of a second LTM; for example, this UE may not support L1 measurement, that is, this UE does not have the ability to perform L1 measurement but has the ability to perform LTM.

[0149] For example, if the first report and / or secondary cell group failure message records L1 measurement results and L3 measurement results, the network may consider it an implicit indication of the first LTM, second LTM, or third LTM. Alternatively, the network may determine the LTM type through other means (such as the first indication information recorded in the first report and / or secondary cell group failure message).

[0150] Using implicit instructions can help save on reporting costs.

[0151] In some embodiments, the first execution condition information includes any of the following:

[0152] Layer 1 execution condition, used to indicate the first LTM;

[0153] The third-level execution condition is used to indicate the second LTM;

[0154] Level 1 execution conditions and Level 3 execution conditions are used to indicate the first LTM, the second LTM, or the third LTM;

[0155] The first LTM includes any one of the following: LTM based on layer 1, LTM triggered by DU, and LTM execution triggered by layer 1 measurement results.

[0156] The second LTM includes any one of the following: Layer 3-based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results;

[0157] The third LTM includes any of the following:

[0158] Layer 1-based LTM and Layer 3-based LTM;

[0159] LTM triggered by DU and LTM triggered by CU;

[0160] LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

[0161] Specifically, the first information used to indicate the LTM type can be implicit indication information, which can be first execution condition information, that is, the LTM type can be implicitly indicated by the first execution condition information recorded in the first report and / or secondary cell group failure information message.

[0162] For example, if the first report and / or secondary cell group failure message records an L1 execution condition, the network can consider it an implicit indication of the first LTM.

[0163] For example, if the first report and / or secondary cell group failure message records an L3 execution condition, the network can consider it an implicit indication of a second LTM.

[0164] For example, if the first report and / or secondary cell group failure information message records L1 execution conditions and L3 execution conditions, the network may consider it an implicit indication of the first LTM, second LTM, or third LTM. Alternatively, the network may determine the LTM type through other means (such as the first indication information recorded in the first report and / or secondary cell group failure information message).

[0165] Using implicit instructions can help save on reporting costs.

[0166] In some embodiments, the first execution condition information may be the execution conditions of the target cell.

[0167] In some embodiments, mobility issues include one or more of the following:

[0168] Wireless link failure;

[0169] LTM execution failed;

[0170] LTM execution was successful, but a critical failure occurred.

[0171] Legacy Layer 3 handover failed;

[0172] CHO execution failed;

[0173] The Dual Active Protocol Stack Handover (DAPS HO) operation failed.

[0174] It should be noted that the technical solution disclosed herein supports both MCG LTM and SCG LTM.

[0175] It should be noted that the aforementioned radio link failures can include source cell RLF and short-term RLF during handover to the target cell.

[0176] It should be noted that critical failure refers to the LTM executing successfully, but a critical failure occurs. This critical failure could be, for example, T310 exceeding the configured threshold, T312 exceeding the configured threshold, or T304 exceeding the configured threshold. T310, T312, and T304 are timers with different functions; please refer to existing technical documentation for details, which will not be elaborated upon here.

[0177] Figure 2 is a second flowchart of the information processing method provided in this embodiment of the present disclosure. The method is applied to a network device. As shown in Figure 2, the method includes the following steps 201 and 202.

[0178] Step 201: Receive a first report and / or a secondary cell group failure information message. The first report and / or secondary cell group failure information message contains first information used to indicate the LTM type. The first report includes one or more of the following: radio link failure report, successful handover report, and successful secondary cell group primary cell addition or change report.

[0179] Step 202: Based on the first information, determine the first network node, which is the optimization node for mobility issues.

[0180] Specifically, network devices can send pre-configured LTM configuration information to the UE. To enable more accurate mobility optimization and reduce erroneous optimization issues, UEs storing LTM configuration information can record first information indicating the LTM type in reports and / or messages such as RLF report, SHR, SPR, and secondary cell group failure information messages when mobility problems occur. This first information allows the network device to determine which network node caused the mobility problem or which network node should optimize it, thus enabling more accurate determination of the optimization node for the mobility problem.

[0181] It should be noted that in the various embodiments of this disclosure, the network device receiving the first report and / or secondary cell group failure information message may be received by other network nodes from the terminal and forwarded to the network node (i.e., the network device) through an interface, or the network node may receive it from the terminal itself. This disclosure does not impose any restrictions.

[0182] The information processing method provided in this disclosure allows a UE to record first information indicating the LTM type in reports and / or messages such as RLF report, SHR, SPR, and secondary cell group failure information message when LTM configuration information is stored and a mobility problem occurs. This enables the network device to determine the optimization node for the mobility problem based on the first information recorded in the reports and / or messages after receiving them, thereby performing mobility optimization more accurately and reducing the problem of incorrect optimization.

[0183] In some embodiments, the first information includes one or more of the following:

[0184] First instruction message;

[0185] First execution condition information;

[0186] First measurement result information.

[0187] For example, the UE can record explicit first indication information in reports and / or messages such as RLF report, SHR, SPR, secondary cell group failure information message, etc., to explicitly indicate the LTM type. There are various ways to explicitly indicate the type, which are not limited here.

[0188] For example, the UE can record information such as the first execution condition and the first measurement result in reports and / or messages such as RLF report, SHR, SPR, and secondary cell group failure information message. The UE can implicitly indicate the LTM type through this information. There are many ways to implicitly indicate the type, which are not limited here.

[0189] In some embodiments, the first indication information includes one or more of the following indication information:

[0190] The second indication information indicates a Layer 1 based LTM, or indicates a Layer 3 based LTM, or indicates both a Layer 1 based LTM and a Layer 3 based LTM.

[0191] The third indication information indicates whether it is a Layer 1 based LTM, or whether it is a Layer 3 based LTM, or whether it is both a Layer 1 based LTM and a Layer 3 based LTM.

[0192] The fourth indication information indicates the LTM triggered by the DU, or the LTM triggered by the CU, or both the LTM triggered by the DU and the LTM triggered by the CU.

[0193] The fifth indication information indicates whether the LTM is triggered by DU, or whether the LTM is triggered by CU, or whether the LTM is triggered by both DU and CU.

[0194] The sixth instruction information indicates that LTM execution is triggered based on Layer 1 measurement results, or LTM execution is triggered based on Layer 3 measurement results, or LTM execution is triggered based on both Layer 1 and Layer 3 measurement results.

[0195] The seventh indication information indicates whether the LTM execution is triggered based on the Layer 1 measurement results, or whether the LTM execution is triggered based on the Layer 3 measurement results, or whether the LTM execution is triggered based on both Layer 1 and Layer 3 measurement results.

[0196] Specifically, the second indication information indicates an L1-based LTM, an L3-based LTM, or both an L1-based LTM and an L3-based LTM. In some embodiments, the second indication information can be an enumeration type, such as ENUMERATED{L1-based LTM, L3-based LTM} or ENUMERATED{L1-based LTM, L3-based LTM, both}. Here, ENUMERATED represents an enumeration, and both represents both L1-based LTM and L3-based LTM.

[0197] The third indication information indicates whether it is an L1-based LTM, an L3-based LTM, or both. For example, the third indication information is ENUMERATED{true}, where the parameter value is true. If the third indication information indicates whether it is an L1-based LTM, then the parameter value is true; if the third indication information indicates whether it is an L3-based LTM, then the parameter value is true; if the third indication information indicates whether it is both an L1-based LTM and L3-based LTM, then the parameter value is true.

[0198] The fourth indication information indicates the LTM trigger node, namely DU, CU, or both (i.e., DU and CU). In some embodiments, the DU may be, for example, a source DU, and the CU may be, for example, a source CU; this disclosure is not limiting. For example, the fourth indication information may be ENUMERATED{source DU, CU} or ENUMERATED{source DU, CU, both}.

[0199] The fifth indication information indicates whether the LTM trigger node is a DU, or whether the LTM trigger node is a CU, or whether the LTM trigger node is both a DU and a CU. In some embodiments, the DU may be, for example, a source DU, and the CU may be, for example, a source CU; this disclosure is not limiting. For example, the fifth indication information is ENUMERATED{true}, where the parameter value is true. When the fifth indication information indicates whether the LTM trigger node is a DU, the parameter value true indicates that the LTM trigger node is a DU; when the fifth indication information indicates whether the LTM trigger node is a CU, the parameter value true indicates that the LTM trigger node is a CU; when the fifth indication information indicates whether the LTM trigger node is both a DU and a CU, the parameter value true indicates that the LTM trigger node is both a DU and a CU.

[0200] The sixth indication information indicates LTM execution triggered based on L1 measurement results, or LTM execution triggered based on L3 measurement results, or both (i.e., LTM execution triggered based on both L1 and L3 measurement results). For example, the sixth indication information could be ENUMERATED{based L1 measurement, based L3 measurement} or ENUMERATED{based L1 measurement, based L3 measurement, both}.

[0201] The seventh indication information indicates whether LTM execution is triggered based on L1 measurement results, LTM execution is triggered based on L3 measurement results, or LTM execution is triggered based on both L1 and L3 measurement results. For example, the fourth indication information is ENUMERATED{true}, where the parameter value is true. If the seventh indication information indicates whether LTM execution is triggered based on L1 measurement results, then the parameter value true indicates that LTM execution is triggered based on L1 measurement results; if the seventh indication information indicates whether LTM execution is triggered based on L3 measurement results, then the parameter value true indicates that LTM execution is triggered based on both L1 and L3 measurement results.

[0202] In some embodiments, the method further includes:

[0203] Send the first instruction information to the terminal.

[0204] Specifically, the network device sends a first indication message to the terminal, which can be sent by a CU or a DU. In various embodiments of this disclosure, the DU can be, for example, a source DU, and the CU can be, for example, a source CU.

[0205] The network device sends a first indication message to the UE, which can then directly record this first indication message in reports and / or messages such as the RLF report, SHR, SPR, and secondary cell group failure information message when mobility issues occur and LTM configuration information is stored. This approach helps reduce the implementation complexity on the UE side.

[0206] In some embodiments, a first indication message is sent to the terminal, including one or more of the following:

[0207] Before sending the LTM cell change command to the terminal, send the first indication information to the terminal;

[0208] Send an LTM cell change command to the terminal. The LTM cell change command carries the first indication information.

[0209] Specifically, the network device can send the first indication information to the UE before sending the LTM cell change command to the UE or before triggering the LTM cell change execution. The specific timing of sending the first indication information can depend on the network implementation, as long as the UE receives the first indication information before receiving the LTM cell change command.

[0210] Network devices can also carry initial indication information in LTM cell change commands. For example, 1 bit can be introduced in the LTM cell change command to indicate the LTM type.

[0211] In some embodiments, before sending the LTM cell change command to the terminal, first indication information is sent to the terminal, including:

[0212] Before sending the LTM cell change command to the terminal, a first indication message is sent to the terminal using one of the following methods:

[0213] Send LTM configuration information to the terminal, the LTM configuration information carrying the first indication information; or...

[0214] The CU of the network device sends the first indication information to the terminal via RRC signaling; or,

[0215] The DU of the network device sends the first instruction information to the terminal through Layer 1 signaling or Layer 2 signaling.

[0216] For example, the CU sends the first indication information to the UE in the pre-configured LTM configuration information. This pre-configured LTM configuration information is sent before the LTM cell change command.

[0217] For example, before sending an LTM cell change command to the terminal, the CU can send the first indication information to the terminal via RRC signaling, or the DU can send the first indication information to the terminal via Layer 1 signaling or Layer 2 signaling. There are various specific timing and methods for sending the information, which are not specifically limited here.

[0218] For example, in the case where the CU triggers L3 measurement-based LTM, before the DU sends the LTM cell change command (e.g., when the CU triggers L3 measurement-based LTM, or before the CU triggers L3 measurement-based LTM), the CU sends the first indication information to the UE via RRC signaling. The RRC signaling is, for example, an RRC reconfiguration message.

[0219] For example, in the case where the CU triggers L3 measurement-based LTM, the DU sends the first indication information to the UE via L1 signaling or L2 signaling before sending the LTM cell change command. L1 signaling is, for example, DCI. L2 signaling is, for example, MAC CE.

[0220] For example, in the case where the DU triggers L1 measurement-based LTM, before sending the LTM cell change command (e.g., when the DU triggers L1 measurement-based LTM, or before the DU triggers L1 measurement-based LTM), the DU sends the first indication information to the UE via L1 signaling or L2 signaling.

[0221] In some embodiments, the DU of the network device sends first indication information to the terminal via Layer 1 signaling or Layer 2 signaling, including:

[0222] The CU of the network device sends the first indication information to the DU of the network device through the F1 interface signaling;

[0223] The DU of the network device sends the first instruction information to the terminal through Layer 1 signaling or Layer 2 signaling.

[0224] For example, in the case where the CU triggers L3 measurement-based LTM, the CU can send the first indication information to the DU, and the DU can send the first indication information to the UE via Layer 1 signaling or Layer 2 signaling before sending the LTM cell change command.

[0225] In some embodiments, the CU of the network device sends first indication information to the terminal via RRC signaling, including:

[0226] The DU of the network device sends the first indication information to the CU of the network device through the F1 interface signaling;

[0227] The CU of the network device sends the first instruction information to the terminal via RRC signaling.

[0228] For example, in the case where the DU triggers L1 measurement-based LTM, the DU can send the first indication information to the CU before sending the LTM cell change command. The CU then sends the first indication information to the UE via RRC signaling. After the CU sends the first indication information to the UE, it can notify the DU of successful transmission. The DU can then send the LTM cell change command after receiving the successful transmission notification from the CU.

[0229] In some embodiments, the first measurement result information includes any of the following:

[0230] Layer 1 measurement results are used to indicate the first LTM;

[0231] The results of the third-layer measurement are used to indicate the second LTM;

[0232] Layer 1 and Layer 3 measurement results are used to indicate the first LTM, second LTM, or third LTM;

[0233] The first LTM includes any one of the following: LTM based on layer 1, LTM triggered by DU, and LTM execution triggered by layer 1 measurement results.

[0234] The second LTM includes any one of the following: Layer 3-based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results;

[0235] The third LTM includes any of the following:

[0236] Layer 1-based LTM and Layer 3-based LTM;

[0237] LTM triggered by DU and LTM triggered by CU;

[0238] LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

[0239] Specifically, the first information used to indicate the LTM type can be implicit indication information, which can be the first measurement result information, that is, the LTM type can be implicitly indicated by the first measurement result information recorded in the first report and / or secondary cell group failure information message.

[0240] For example, if the first report and / or secondary cell group failure message records an L1 measurement result, the network can consider it an implicit indication of the first LTM.

[0241] For example, if the first report and / or secondary cell group failure message records an L3 measurement result, the network can consider it an implicit indication of a second LTM; for example, this UE may not support L1 measurement, that is, this UE does not have the ability to perform L1 measurement but has the ability to perform LTM.

[0242] For example, if the first report and / or secondary cell group failure message records L1 measurement results and L3 measurement results, the network may consider it an implicit indication of the first LTM, second LTM, or third LTM. Alternatively, the network may determine the LTM type through other means (such as the first indication information recorded in the first report and / or secondary cell group failure message).

[0243] In some embodiments, the first execution condition information includes any of the following:

[0244] Layer 1 execution condition, used to indicate the first LTM;

[0245] The third-level execution condition is used to indicate the second LTM;

[0246] Level 1 execution conditions and Level 3 execution conditions are used to indicate the first LTM, the second LTM, or the third LTM;

[0247] The first LTM includes any one of the following: LTM based on layer 1, LTM triggered by DU, and LTM execution triggered by layer 1 measurement results.

[0248] The second LTM includes any one of the following: Layer 3-based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results;

[0249] The third LTM includes any of the following:

[0250] Layer 1-based LTM and Layer 3-based LTM;

[0251] LTM triggered by DU and LTM triggered by CU;

[0252] LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

[0253] Specifically, the first information used to indicate the LTM type can be implicit indication information, which can be first execution condition information, that is, the LTM type can be implicitly indicated by the first execution condition information recorded in the first report and / or secondary cell group failure information message.

[0254] For example, if the first report and / or secondary cell group failure message records an L1 execution condition, the network can consider it an implicit indication of the first LTM.

[0255] For example, if the first report and / or secondary cell group failure message records an L3 execution condition, the network can consider it an implicit indication of a second LTM.

[0256] For example, if the first report and / or secondary cell group failure information message records L1 execution conditions and L3 execution conditions, the network may consider it an implicit indication of the first LTM, second LTM, or third LTM. Alternatively, the network may determine the LTM type through other means (such as the first indication information recorded in the first report and / or secondary cell group failure information message).

[0257] In some embodiments, determining the first network node based on the first information includes:

[0258] If the first information indicates the first LTM, the first network node is determined to be a DU; or,

[0259] If the first information indicates the second LTM, the first network node is determined to be a CU; or,

[0260] In the case where the first information indicates the third LTM, the first network nodes are identified as DU and CU;

[0261] The first LTM includes any one of the following: LTM based on layer 1, LTM triggered by DU, and LTM execution triggered by layer 1 measurement results.

[0262] The second LTM includes any one of the following: Layer 3-based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results;

[0263] The third LTM includes any of the following:

[0264] Layer 1-based LTM and Layer 3-based LTM;

[0265] LTM triggered by DU and LTM triggered by CU;

[0266] LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

[0267] For example, if the LTM type indicated by the first information is L1-based LTM, the network can determine that the optimization node for the mobility problem is DU; if the LTM type indicated by the first information is L3-based LTM, the network can determine that the optimization node for the mobility problem is CU; if the LTM types indicated by the first information are both L1-based LTM and L3-based LTM, the network can determine that the optimization nodes for the mobility problem are DU and CU. In various embodiments of this disclosure, DU may be, for example, a source DU, and CU may be, for example, a source CU.

[0268] In some embodiments, the method further includes:

[0269] Send at least one of the following messages to the first network node via interface signaling: first information, first report, and / or secondary cell group failure information message.

[0270] Specifically, after receiving reports and / or messages such as RLF report, SHR, SPR, and secondary cell group failure information message, the network device can obtain the first information recorded therein, determine the first network node based on the first information, and then send the first information to the first network node through interface signaling such as F1 interface signaling, or send the first report and / or secondary cell group failure information message to the first network node, or send both the first information and the first report and / or secondary cell group failure information message to the first network node, so that the first network node can optimize the mobility problem.

[0271] Figure 3 is a flowchart of the information processing method provided in this embodiment of the present disclosure. The method is applied to a network device. As shown in Figure 3, the method includes the following steps 301, 302 and 303.

[0272] Step 301: Record the first information used to indicate the LTM type in the terminal's context information.

[0273] Step 302: Receive a first report and / or secondary cell group failure information message sent by the terminal; wherein, the first report includes one or more of the following: radio link failure report, successful handover report, and successful addition or change of primary cell in secondary cell group.

[0274] Step 303: Search for the first information in the context information of the terminal. Based on the obtained first information, determine the first network node. The first network node is the optimization node for mobility issues.

[0275] Specifically, the embodiments of this disclosure are implemented through a separate network-side solution, eliminating the need for the terminal to record the first information used to indicate the LTM type in the first report and / or secondary cell group failure information message.

[0276] The network device can first record the first information used to indicate the LTM type in the UE's context information. For example, the network device can save the first information corresponding to this configuration when pre-configuring LTM configuration information for the UE (or afterward), or save the corresponding first information when issuing the LTM execution command. The relevant content of the first information can be found in the previous text and will not be repeated here.

[0277] After the network device receives the first report and / or secondary cell group failure information message sent by the UE, it can search for the corresponding first information in the UE's context information based on the relevant information in the first report and / or secondary cell group failure information message. Then, based on this first information, it determines the optimization node for mobility issues, i.e., the first network node. This allows the network to perform mobility optimization more accurately and reduces erroneous optimization problems.

[0278] In some embodiments, determining the first network node based on the first information includes:

[0279] If the first information indicates the first LTM, the first network node is determined to be a DU; or,

[0280] If the first information indicates the second LTM, the first network node is determined to be a CU; or,

[0281] In the case where the first information indicates the third LTM, the first network nodes are identified as DU and CU;

[0282] The first LTM includes any one of the following: LTM based on layer 1, LTM triggered by DU, and LTM execution triggered by layer 1 measurement results.

[0283] The second LTM includes any one of the following: Layer 3-based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results;

[0284] The third LTM includes any of the following:

[0285] Layer 1-based LTM and Layer 3-based LTM;

[0286] LTM triggered by DU and LTM triggered by CU;

[0287] LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

[0288] For example, if the LTM type indicated by the first information is L1-based LTM, the network can determine that the optimization node for the mobility problem is DU; if the LTM type indicated by the first information is L3-based LTM, the network can determine that the optimization node for the mobility problem is CU; if the LTM types indicated by the first information are both L1-based LTM and L3-based LTM, the network can determine that the optimization nodes for the mobility problem are DU and CU. In various embodiments of this disclosure, DU may be, for example, a source DU, and CU may be, for example, a source CU.

[0289] In some embodiments, the method further includes:

[0290] Send at least one of the following messages to the first network node via interface signaling: first information, first report, and / or secondary cell group failure information message.

[0291] Specifically, the network device determines the first network node based on the first information, and then sends the first information to the first network node through interface signaling such as F1 interface signaling, or sends the first report and / or secondary cell group failure information message to the first network node, or sends both the first information and the first report and / or secondary cell group failure information message to the first network node, so that the first network node can optimize the mobility problem.

[0292] The methods provided in the various embodiments of this disclosure are based on the same technical concept, so the implementation of each method can be referred to each other, and repeated parts will not be described again.

[0293] The methods provided in the above embodiments of this disclosure are illustrated by specific examples below.

[0294] Example 1: Send the first indication information to the UE in advance.

[0295] Step 1: The network sends pre-configured LTM configuration information to the UE.

[0296] Step 2: Based on the measurement results reported by the UE, the network sends an LTM cell change command to the UE. Before sending the LTM cell change command, the network sends a first indication message to the UE, which may include one or more of the following methods:

[0297] Case 1: If the source DU makes a handover decision based on the L1 measurement results reported by the UE and decides to send an LTM cell change command to the UE:

[0298] (1) Before the source DU triggers L1 measurement-based LTM, that is, before the source DU sends the LTM cell change command to the UE, the source DU first notifies the UE of the first indication information in advance through L1 signaling (DCI) or L2 signaling (MAC CE).

[0299] (2) Before the source DU triggers L1 measurement-based LTM, that is, before the source DU sends the LTM cell change command to the UE, the source DU sends the first indication information to the CU through the F1 interface signaling. After the CU receives the first indication information sent by the source DU, the CU sends RRC signaling (such as RRC reconfiguration message) to the UE to notify the UE of the first indication information.

[0300] (3) In step 1, when the CU sends the pre-configured LTM configuration information to the UE, an indication information is introduced in the pre-configured LTM configuration information to indicate the LTM type, namely the first indication information; the first indication information can be configured as a whole, that is, only one first indication information is configured for a set of LTM configurations, or it can be configured per candidate cell.

[0301] Case 2: If the CU makes a handover decision based on the L3 measurement results reported by the UE and decides to trigger LTM execution:

[0302] (1) Before the CU triggers L3 measurement-based LTM, that is, before the CU triggers the source DU to send the LTM cell change command through the F1 interface signaling (or at the same time), the CU notifies the UE of the first indication information through RRC signaling (such as RRC reconfiguration message), which can be sent to the UE together with the SHR configuration.

[0303] (2) When the source DU receives the L3 measurement-based LTM triggered by the CU, the source DU first notifies the UE of the first indication information in advance through L1 signaling (DCI) or L2 signaling (MAC CE), and then sends the LTM cell change command to the UE.

[0304] (3) In step 1, when the CU sends the pre-configured LTM configuration information to the UE, an indication information is introduced in the pre-configured LTM configuration information to indicate the LTM type, namely the first indication information; the first indication information can be configured as a whole, that is, only one first indication information is configured for a set of LTM configurations, or it can be configured per candidate cell.

[0305] Step 3: When the UE receives the LTM cell change command sent by the network, the UE performs the LTM cell change to access the target cell, but access fails.

[0306] Step 4: The UE records the RLF report and records the first indication information in the RLF report.

[0307] Step 5: The UE reports the availability indication information to the network, indicating that the UE has stored an RLF report.

[0308] Step 6: The network sends a request message (UE Information Request Message) to request the UE to report an RLF report.

[0309] Step 7: The UE receives the request message sent by the network and reports the RLF report to the network in the request response message (UE information response message) based on the request message.

[0310] Step 8: The network receives the RLF report from the UE and forwards it to the CU at that time. The CU then determines whether to optimize the RLF report based on the first indication information in the RLF report, or to send the RLF report to the source DU via the F1 interface for optimization. For example, if the first indication information in the RLF report indicates L1-based LTM, the CU will send the RLF report to the source DU via the F1 interface, and the source DU will make the handover decision or optimize the handover-related parameters.

[0311] It should be noted that this example uses an RLF report, but it is also applicable to other reports or messages (such as SHR, SPR, SCGFailureInformation message, etc.).

[0312] It should be noted that in step 8, regardless of whether the CU sends the RLF report to the source DU at that time, the CU can send the first indication information to the source DU through the F1 interface.

[0313] Example 2: Send the first indication information and the LTM cell change command to the UE together.

[0314] Step 1: The network sends pre-configured LTM configuration information to the UE.

[0315] Step 2: The network sends an LTM cell change command to the UE based on the measurement results reported by the UE. The first indication information is carried in the LTM cell change command and sent to the UE. Specifically, it includes one or more of the following sending methods:

[0316] Case 1: If the source DU makes a handover decision based on the L1 measurement results reported by the UE and decides to send an LTM cell change command to the UE, then when the source DU triggers L1 measurement-based LTM, that is, when the source DU sends the LTM cell change command to the UE, the source DU will put the first indication information into the LTM cell change command and send it to the UE together.

[0317] Case 2: If the CU makes a handover decision based on the L3 measurement results reported by the UE and decides to trigger LTM execution, then when the source DU receives the notification from the CU that L3 measurement-based LTM has been triggered, the source DU sends an LTM cell change command to the UE, and the LTM cell change command carries the first indication information.

[0318] Step 3: When the UE receives the LTM cell change command sent by the network, the UE performs the LTM cell change to access the target cell, but access fails.

[0319] Step 4: The UE records the RLF report and records the first indication information in the RLF report.

[0320] Step 5: The UE reports the Available indication information to the network, indicating that the UE has stored the RLF report.

[0321] Step 6: The network sends a request message (UE Information Request Message) to request the UE to report an RLF report.

[0322] Step 7: The UE receives the request message sent by the network and reports the RLF report to the network in the request response message (UE information response message) based on the request message.

[0323] Step 8: The network receives the RLF report from the UE and forwards it to the CU at that time. The CU then determines whether to optimize the RLF report based on the first indication information in the RLF report, or to send the RLF report to the source DU via the F1 interface for optimization. For example, if the first indication information in the RLF report indicates L1-based LTM, the CU will send the RLF report to the source DU via the F1 interface, and the source DU will make the handover decision or optimize the handover-related parameters.

[0324] It should be noted that this example uses an RLF report, but it is also applicable to other reports or messages (such as SHR, SPR, SCGFailureInformation message, etc.).

[0325] It should be noted that in step 8, regardless of whether the CU sends the RLF report to the source DU at that time, the CU can send the first indication information to the source DU through the F1 interface.

[0326] Example 3: Implicitly indicating the LTM type.

[0327] Unlike Examples 1 and 2, Example 3 indicates the LTM type to the UE in an implicit way.

[0328] When a UE experiences a mobility problem, the UE records relevant information and reports it to the network. If the information recorded by the UE includes measurement results / execution condition information, then the LTM type can be implicitly indicated through the measurement results / execution condition information.

[0329] For implicit indications of LTM type through measurement results, the specifics are as follows:

[0330] (1) If only L1 measurement results are carried, it is considered to be an L1-based LTM.

[0331] (2) If only L3 measurement results are carried, it is considered to be L3-based LTM; for example, this UE may not support L1 measurement, that is, this UE does not have the ability to perform L1 measurement but has the ability to perform LTM.

[0332] (3) If the L1 and L3 measurement results are included, then:

[0333] a. It is considered to be an L1-based LTM.

[0334] b. It is believed that both nodes should be optimized. For example, if it is too late handover, then both CU and source DU should be optimized.

[0335] c. Determine based on explicit indication. When both L1 and L3 measurement results are available, further use explicit methods, such as indicating them as in Example 1 or Example 2.

[0336] For implicit indication of LTM type through execution condition information, the details are as follows:

[0337] (1) If the target cell records L1 execution conditions, then it is L1-based LTM. For example, for conditional LTM, the L1 execution conditions are configured by the source DU, so it is considered L1-based LTM, that is, the source DU should be used for optimization.

[0338] (2) If the target cell records L3 execution conditions, then it is L3-based LTM. For example, for conditional LTM, the L3 execution conditions are configured by the CU, so it is considered L3-based LTM, that is, the CU should optimize it.

[0339] (3) If the target cell records both L1 and L3 execution conditions, it is considered to be L1-based LTM, or L3-based LTM, or both nodes should be optimized, or the determination is based on explicit indications. For example, for conditional LTM, if an LTM candidate cell is configured with both L1 and L3 execution conditions, then:

[0340] a. It is considered to be the default L1-based LTM, that is, the default optimization is source DU.

[0341] b. It is considered to be the default L3-based LTM, that is, the default optimization is CU.

[0342] c. It is believed that both need optimization. For example, in the case of "too late," it means that neither execution condition is triggered, and both should be optimized.

[0343] d. Determine based on explicit instructions. See Example 1 or Example 2 for specific instructions.

[0344] For implicitly indicating the LTM type through measurement results, the process in Example 3 is as follows:

[0345] Step 1-1: The network sends pre-configured LTM configuration information to the UE.

[0346] Step 2-1: The network sends an LTM cell change command to the UE based on the measurement results reported by the UE.

[0347] Step 3-1: When the UE receives the LTM cell change command sent by the network, the UE performs the LTM cell change to access the target cell, but access fails.

[0348] Step 4-1: The UE records the RLF report, which contains measurement result information.

[0349] Step 5-1: The UE reports the information that it can obtain to the network, indicating that the UE has stored an RLF report.

[0350] Step 6-1: The network sends a request message (UE information request message) to request the UE to report an RLF report.

[0351] Step 7-1: The UE receives the request message sent by the network and reports the RLF report to the network in the request response message (UE information response message) based on the request message.

[0352] Step 8-1: The network receives the RLF report from the UE and forwards it to the CU at that time. The CU then decides whether to optimize the RLF report based on the measurement results in the report or to send it to the source DU via the F1 interface for optimization. For example, if the RLF report only includes L3 measurement results, the CU will make its own handover decision or optimize the handover-related parameters, and will not send the RLF report to the source DU via the F1 interface.

[0353] For implicit indication of the LTM type through execution condition information, the process in Example 3 is as follows:

[0354] Step 1-2: The network sends pre-configured conditional LTM configuration information to the UE.

[0355] Step 2-2: The UE performs an execution condition evaluation based on the execution conditions configured by the network.

[0356] Step 3-2: When the UE evaluation finds that one or more LTM candidate cells meet the execution conditions, the UE performs LTM cell change to access a target cell, but access fails.

[0357] Step 4-2: The UE records the RLF report, which contains the execution condition information.

[0358] Step 5-2: The UE reports the information that it can obtain to the network, indicating that the UE has stored an RLF report.

[0359] Step 6-2: The network sends a request message (UE information request message) to request the UE to report an RLF report.

[0360] Step 7-2: The UE receives the request message sent by the network and reports the RLF report to the network in the request response message (UE information response message) based on the request message.

[0361] Step 8-2: The network receives the RLF report from the UE and forwards it to the CU at that time. The CU then decides whether to optimize the RLF report based on the execution condition information in the RLF report, or to send the RLF report to the source DU via the F1 interface for optimization. For example, if the RLF report only includes L3 execution conditions, the CU will make its own handover decision or optimize the handover-related parameters, and will not send the RLF report to the source DU via the F1 interface.

[0362] It should be noted that this example uses an RLF report, but it is also applicable to other reports or messages (such as SHR, SPR, SCGFailureInformation message, etc.).

[0363] It should be noted that in steps 8-1 and 8-2, regardless of whether the CU sends the RLF report to the source DU at that time, the CU can send the information (measurement results / execution condition information) used to indicate the LTM type to the source DU through the F1 interface.

[0364] Example 4: Network scheme.

[0365] The network (CU) stores initial information in the UE context to indicate the LTM type.

[0366] When the network (CU) receives a mobility issue-related report or message from the UE, such as an RLF report, based on the information in the RLF report, the network can find the stored UE context information at that time and know the type of LTM execution associated with this RLF report.

[0367] It should be noted that regardless of whether the CU sends the RLF report to the source DU, the CU can send the first information indicating the LTM type to the source DU through the F1 interface.

[0368] Example 5: The terminal records and reports the first instruction information based on the execution conditions.

[0369] Step 1: The network sends pre-configured conditional LTM configuration information to the UE.

[0370] Step 2: The UE performs an execution condition evaluation based on the execution conditions configured by the network.

[0371] Step 3: When the UE evaluation finds that one or more LTM candidate cells meet the execution conditions, the UE performs an LTM cell switch to access a target cell, but the access fails.

[0372] Step 4: The UE records an RLF report, which will record one or more of the following information:

[0373] (1) If an LTM cell change is executed, the UE records a first indication information for the target cell based on the execution conditions configured for the target cell.

[0374] (2) If an LTM cell change is executed, the UE records a first indication information (execution condition per LTM configuration) based on the configured execution conditions, or records the first indication information of each LTM candidate cell (execution condition per candidate cell configuration).

[0375] (3) If no LTM cell change is performed, but the UE experiences a radio link failure (RLF) in the source cell, the UE records a first indication information based on the configured execution conditions (execution conditions per LTM configuration), or records the first indication information for each LTM candidate cell (execution conditions per candidate cell configuration).

[0376] Step 5: The UE reports the information that it can obtain to the network, indicating that the UE has stored an RLF report.

[0377] Step 6: The network sends a request message (UE Information Request Message) to request the UE to report an RLF report.

[0378] Step 7: The UE receives the request message sent by the network and reports the RLF report to the network in the request response message (UE information response message) based on the request message.

[0379] Step 8: The network receives the RLF report from the UE and forwards it to the CU at that time. The CU at that time decides whether to optimize the RLF report itself or send it to the source DU via the F1 interface based on the first indication information in the RLF report. For example, if the RLF report indicates L3-based LTM, the CU will make the handover decision or optimize the handover-related parameters itself, and will not send the RLF report to the source DU via the F1 interface.

[0380] It should be noted that this example uses an RLF report, but it is also applicable to other reports or messages (such as SHR, SPR, SCGFailureInformation message, etc.).

[0381] It should be noted that in step 8, regardless of whether the CU sends the RLF report to the source DU at that time, the CU can send the first indication information to the source DU through the F1 interface.

[0382] 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.

[0383] 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.

[0384] 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.

[0385] 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.

[0386] 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.

[0387] The processor 400 executes any of the methods provided in this disclosure embodiment according to the obtained executable instructions by calling a computer program stored in the memory 420, including:

[0388] In the event that a mobility LTM configuration information triggered by Layer 1 or Layer 2 is stored and a mobility problem occurs, first information indicating the LTM type is recorded in the first report and / or secondary cell group failure information message; the first report includes one or more of the following: radio link failure report, successful handover report, successful secondary cell group primary cell addition or change report;

[0389] Send the first report and / or secondary cell group failure information message to the network device.

[0390] In some embodiments, the first information includes one or more of the following:

[0391] First instruction message;

[0392] First execution condition information;

[0393] First measurement result information.

[0394] In some embodiments, the first indication information includes one or more of the following indication information:

[0395] The second indication information indicates a Layer 1 based LTM, or indicates a Layer 3 based LTM, or indicates both a Layer 1 based LTM and a Layer 3 based LTM.

[0396] The third indication information indicates whether it is a Layer 1 based LTM, or whether it is a Layer 3 based LTM, or whether it is both a Layer 1 based LTM and a Layer 3 based LTM.

[0397] The fourth indication information indicates the LTM triggered by the distributed unit DU, or the LTM triggered by the centralized unit CU, or the LTM triggered by both DU and CU.

[0398] The fifth indication information indicates whether the LTM is triggered by DU, or whether the LTM is triggered by CU, or whether the LTM is triggered by both DU and CU.

[0399] The sixth instruction information indicates that LTM execution is triggered based on Layer 1 measurement results, or LTM execution is triggered based on Layer 3 measurement results, or LTM execution is triggered based on both Layer 1 and Layer 3 measurement results.

[0400] The seventh indication information indicates whether the LTM execution is triggered based on the Layer 1 measurement results, or whether the LTM execution is triggered based on the Layer 3 measurement results, or whether the LTM execution is triggered based on both Layer 1 and Layer 3 measurement results.

[0401] In some embodiments, the method further includes:

[0402] Receive the first instruction information sent by the network device.

[0403] In some embodiments, first information indicating the LTM type is recorded in the first report and / or secondary cell group failure information message, including:

[0404] Based on the execution conditions, the first instruction information is recorded in the first report and / or auxiliary cell group failure information message.

[0405] In some embodiments, based on execution conditions, first indication information is recorded in the first report and / or secondary cell group failure information message, including:

[0406] When the execution condition is a Layer 1 execution condition, a first indication information is recorded in the first report and / or secondary cell group failure information message to indicate the first LTM; or,

[0407] When the execution condition is Layer 3 execution condition, a first indication information is recorded in the first report and / or secondary cell group failure information message to indicate the second LTM; or,

[0408] When the execution conditions include both Layer 1 and Layer 3 execution conditions, a first indication information is recorded in the first report and / or secondary cell group failure information message to indicate the first LTM, the second LTM, or the third LTM.

[0409] The first LTM includes any one of the following: LTM based on layer 1, LTM triggered by DU, and LTM execution triggered by layer 1 measurement results.

[0410] The second LTM includes any one of the following: Layer 3-based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results;

[0411] The third LTM includes any of the following:

[0412] Layer 1-based LTM and Layer 3-based LTM;

[0413] LTM triggered by DU and LTM triggered by CU;

[0414] LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

[0415] In some embodiments, based on execution conditions, first indication information is recorded in the first report and / or secondary cell group failure information message, including:

[0416] Based on the execution condition configuration information, a first indication message is recorded in the first report and / or the secondary cell group failure message, or a first indication message is recorded separately for each candidate cell.

[0417] In some embodiments, the first measurement result information includes any of the following:

[0418] Layer 1 measurement results are used to indicate the first LTM;

[0419] The results of the third-layer measurement are used to indicate the second LTM;

[0420] Layer 1 and Layer 3 measurement results are used to indicate the first LTM, second LTM, or third LTM;

[0421] The first LTM includes any one of the following: LTM based on layer 1, LTM triggered by DU, and LTM execution triggered by layer 1 measurement results.

[0422] The second LTM includes any one of the following: Layer 3-based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results;

[0423] The third LTM includes any of the following:

[0424] Layer 1-based LTM and Layer 3-based LTM;

[0425] LTM triggered by DU and LTM triggered by CU;

[0426] LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

[0427] In some embodiments, the first execution condition information includes any of the following:

[0428] Layer 1 execution condition, used to indicate the first LTM;

[0429] The third-level execution condition is used to indicate the second LTM;

[0430] Level 1 execution conditions and Level 3 execution conditions are used to indicate the first LTM, the second LTM, or the third LTM;

[0431] The first LTM includes any one of the following: LTM based on layer 1, LTM triggered by DU, and LTM execution triggered by layer 1 measurement results.

[0432] The second LTM includes any one of the following: Layer 3-based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results;

[0433] The third LTM includes any of the following:

[0434] Layer 1-based LTM and Layer 3-based LTM;

[0435] LTM triggered by DU and LTM triggered by CU;

[0436] LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

[0437] In some embodiments, mobility issues include one or more of the following:

[0438] Wireless link failure;

[0439] LTM execution failed;

[0440] LTM execution was successful, but a critical failure occurred.

[0441] Traditional Layer 3 handover failed;

[0442] Conditional switching CHO execution failed;

[0443] The dual-activation protocol stack switching DAPS HO execution failed.

[0444] Figure 5 is a schematic diagram of the structure of a network device provided in an embodiment of this disclosure. As shown in Figure 5, the network 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.

[0445] 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.

[0446] 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.

[0447] 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.

[0448] The processor 500 can be a CPU, ASIC, FPGA or CPLD, and the processor can also adopt a multi-core architecture.

[0449] The processor 500 executes any of the methods provided in the embodiments of this disclosure according to the obtained executable instructions by calling a computer program stored in the memory 520, including:

[0450] Receive a first report and / or a secondary cell group failure information message, wherein the first report and / or secondary cell group failure information message records first information for indicating the LTM type; wherein the first report includes one or more of the following: radio link failure report, successful handover report, and successful secondary cell group primary cell addition or change report;

[0451] Based on the first information, the first network node is determined, and the first network node is the optimized node for mobility issues.

[0452] In some embodiments, the first information includes one or more of the following:

[0453] First instruction message;

[0454] First execution condition information;

[0455] First measurement result information.

[0456] In some embodiments, the first indication information includes one or more of the following indication information:

[0457] The second indication information indicates a Layer 1 based LTM, or indicates a Layer 3 based LTM, or indicates both a Layer 1 based LTM and a Layer 3 based LTM.

[0458] The third indication information indicates whether it is a Layer 1 based LTM, or whether it is a Layer 3 based LTM, or whether it is both a Layer 1 based LTM and a Layer 3 based LTM.

[0459] The fourth indication information indicates the LTM triggered by the DU, or the LTM triggered by the CU, or both the LTM triggered by the DU and the LTM triggered by the CU.

[0460] The fifth indication information indicates whether the LTM is triggered by DU, or whether the LTM is triggered by CU, or whether the LTM is triggered by both DU and CU.

[0461] The sixth instruction information indicates that LTM execution is triggered based on Layer 1 measurement results, or LTM execution is triggered based on Layer 3 measurement results, or LTM execution is triggered based on both Layer 1 and Layer 3 measurement results.

[0462] The seventh indication information indicates whether the LTM execution is triggered based on the Layer 1 measurement results, or whether the LTM execution is triggered based on the Layer 3 measurement results, or whether the LTM execution is triggered based on both Layer 1 and Layer 3 measurement results.

[0463] In some embodiments, the method further includes:

[0464] Send the first instruction information to the terminal.

[0465] In some embodiments, a first indication message is sent to the terminal, including one or more of the following:

[0466] Before sending the LTM cell change command to the terminal, send the first indication information to the terminal;

[0467] Send an LTM cell change command to the terminal. The LTM cell change command carries the first indication information.

[0468] In some embodiments, before sending the LTM cell change command to the terminal, first indication information is sent to the terminal, including:

[0469] Before sending the LTM cell change command to the terminal, a first indication message is sent to the terminal using one of the following methods:

[0470] Send LTM configuration information to the terminal, the LTM configuration information carrying the first indication information; or...

[0471] The CU of the network device sends the first indication information to the terminal via Radio Resource Control (RRC) signaling; or,

[0472] The DU of the network device sends the first instruction information to the terminal through Layer 1 signaling or Layer 2 signaling.

[0473] In some embodiments, the DU of the network device sends first indication information to the terminal via Layer 1 signaling or Layer 2 signaling, including:

[0474] The CU of the network device sends the first indication information to the DU of the network device through the F1 interface signaling;

[0475] The DU of the network device sends the first instruction information to the terminal through Layer 1 signaling or Layer 2 signaling.

[0476] In some embodiments, the CU of the network device sends first indication information to the terminal via RRC signaling, including:

[0477] The DU of the network device sends the first indication information to the CU of the network device through the F1 interface signaling;

[0478] The CU of the network device sends the first instruction information to the terminal via RRC signaling.

[0479] In some embodiments, the first measurement result information includes any of the following:

[0480] Layer 1 measurement results are used to indicate the first LTM;

[0481] The results of the third-layer measurement are used to indicate the second LTM;

[0482] Layer 1 and Layer 3 measurement results are used to indicate the first LTM, second LTM, or third LTM;

[0483] The first LTM includes any one of the following: LTM based on layer 1, LTM triggered by DU, and LTM execution triggered by layer 1 measurement results.

[0484] The second LTM includes any one of the following: Layer 3-based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results;

[0485] The third LTM includes any of the following:

[0486] Layer 1-based LTM and Layer 3-based LTM;

[0487] LTM triggered by DU and LTM triggered by CU;

[0488] LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

[0489] In some embodiments, the first execution condition information includes any of the following:

[0490] Layer 1 execution condition, used to indicate the first LTM;

[0491] The third-level execution condition is used to indicate the second LTM;

[0492] Level 1 execution conditions and Level 3 execution conditions are used to indicate the first LTM, the second LTM, or the third LTM;

[0493] The first LTM includes any one of the following: LTM based on layer 1, LTM triggered by DU, and LTM execution triggered by layer 1 measurement results.

[0494] The second LTM includes any one of the following: Layer 3-based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results;

[0495] The third LTM includes any of the following:

[0496] Layer 1-based LTM and Layer 3-based LTM;

[0497] LTM triggered by DU and LTM triggered by CU;

[0498] LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

[0499] In some embodiments, determining the first network node based on the first information includes:

[0500] If the first information indicates the first LTM, the first network node is determined to be a DU; or,

[0501] If the first information indicates the second LTM, the first network node is determined to be a CU; or,

[0502] In the case where the first information indicates the third LTM, the first network nodes are identified as DU and CU;

[0503] The first LTM includes any one of the following: LTM based on layer 1, LTM triggered by DU, and LTM execution triggered by layer 1 measurement results.

[0504] The second LTM includes any one of the following: Layer 3-based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results;

[0505] The third LTM includes any of the following:

[0506] Layer 1-based LTM and Layer 3-based LTM;

[0507] LTM triggered by DU and LTM triggered by CU;

[0508] LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

[0509] In some embodiments, the method further includes:

[0510] Send at least one of the following messages to the first network node via interface signaling: first information, first report, and / or secondary cell group failure information message.

[0511] Figure 6 is a second schematic diagram of the structure of the network device provided in the embodiment of this disclosure. As shown in Figure 6, the network 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.

[0512] 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.

[0513] 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.

[0514] 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.

[0515] The processor 600 can be a CPU, ASIC, FPGA or CPLD, and the processor can also adopt a multi-core architecture.

[0516] The processor 600 executes any of the methods provided in the embodiments of this disclosure according to the obtained executable instructions by calling a computer program stored in the memory 620, including:

[0517] Record the first information indicating the LTM type in the terminal's context information;

[0518] The receiving terminal sends a first report and / or a secondary cell group failure information message; wherein the first report includes one or more of the following: a radio link failure report, a successful handover report, and a successful secondary cell group primary cell addition or change report;

[0519] The first information is searched in the context information of the terminal. Based on the obtained first information, the first network node is determined. The first network node is the optimization node for mobility issues.

[0520] In some embodiments, the method further includes:

[0521] Send at least one of the following messages to the first network node via interface signaling: first information, first report, and / or secondary cell group failure information message.

[0522] It should be noted that the terminals and network 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.

[0523] The information processing apparatus provided in the embodiments of this disclosure is described below. The information processing apparatus described below and the information processing method described above can be referred to in correspondence.

[0524] Figure 7 is a schematic diagram of one of the information processing devices provided in this disclosure. As shown in Figure 7, the device includes:

[0525] The first recording unit 710 is configured to record first information indicating the LTM type in a first report and / or secondary cell group failure information message when the LTM configuration information triggered by Layer 1 or Layer 2 is stored and a mobility problem occurs; the first report includes one or more of the following: radio link failure report, successful handover report, and successful secondary cell group primary cell addition or change report;

[0526] The first sending unit 720 is used to send a first report and / or secondary cell group failure information message to the network device.

[0527] In some embodiments, the first information includes one or more of the following:

[0528] First instruction message;

[0529] First execution condition information;

[0530] First measurement result information.

[0531] In some embodiments, the first indication information includes one or more of the following indication information:

[0532] The second indication information indicates a Layer 1 based LTM, or indicates a Layer 3 based LTM, or indicates both a Layer 1 based LTM and a Layer 3 based LTM.

[0533] The third indication information indicates whether it is a Layer 1 based LTM, or whether it is a Layer 3 based LTM, or whether it is both a Layer 1 based LTM and a Layer 3 based LTM.

[0534] The fourth indication information indicates the LTM triggered by the distributed unit DU, or the LTM triggered by the centralized unit CU, or the LTM triggered by both DU and CU.

[0535] The fifth indication information indicates whether the LTM is triggered by DU, or whether the LTM is triggered by CU, or whether the LTM is triggered by both DU and CU.

[0536] The sixth instruction information indicates that LTM execution is triggered based on Layer 1 measurement results, or LTM execution is triggered based on Layer 3 measurement results, or LTM execution is triggered based on both Layer 1 and Layer 3 measurement results.

[0537] The seventh indication information indicates whether the LTM execution is triggered based on the Layer 1 measurement results, or whether the LTM execution is triggered based on the Layer 3 measurement results, or whether the LTM execution is triggered based on both Layer 1 and Layer 3 measurement results.

[0538] In some embodiments, the device further includes:

[0539] The first receiving unit is used to receive the first instruction information sent by the network device.

[0540] In some embodiments, first information indicating the LTM type is recorded in the first report and / or secondary cell group failure information message, including:

[0541] Based on the execution conditions, the first instruction information is recorded in the first report and / or auxiliary cell group failure information message.

[0542] In some embodiments, based on execution conditions, first indication information is recorded in the first report and / or secondary cell group failure information message, including:

[0543] When the execution condition is a Layer 1 execution condition, a first indication information is recorded in the first report and / or secondary cell group failure information message to indicate the first LTM; or,

[0544] When the execution condition is Layer 3 execution condition, a first indication information is recorded in the first report and / or secondary cell group failure information message to indicate the second LTM; or,

[0545] When the execution conditions include both Layer 1 and Layer 3 execution conditions, a first indication information is recorded in the first report and / or secondary cell group failure information message to indicate the first LTM, the second LTM, or the third LTM.

[0546] The first LTM includes any one of the following: LTM based on layer 1, LTM triggered by DU, and LTM execution triggered by layer 1 measurement results.

[0547] The second LTM includes any one of the following: Layer 3-based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results;

[0548] The third LTM includes any of the following:

[0549] Layer 1-based LTM and Layer 3-based LTM;

[0550] LTM triggered by DU and LTM triggered by CU;

[0551] LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

[0552] In some embodiments, based on execution conditions, first indication information is recorded in the first report and / or secondary cell group failure information message, including:

[0553] Based on the execution condition configuration information, a first indication message is recorded in the first report and / or secondary cell group failure message, or a first indication is recorded separately for each candidate cell.

[0554] In some embodiments, the first measurement result information includes any of the following:

[0555] Layer 1 measurement results are used to indicate the first LTM;

[0556] The results of the third-layer measurement are used to indicate the second LTM;

[0557] Layer 1 and Layer 3 measurement results are used to indicate the first LTM, second LTM, or third LTM;

[0558] The first LTM includes any one of the following: LTM based on layer 1, LTM triggered by DU, and LTM execution triggered by layer 1 measurement results.

[0559] The second LTM includes any one of the following: Layer 3-based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results;

[0560] The third LTM includes any of the following:

[0561] Layer 1-based LTM and Layer 3-based LTM;

[0562] LTM triggered by DU and LTM triggered by CU;

[0563] LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

[0564] In some embodiments, the first execution condition information includes any of the following:

[0565] Layer 1 execution condition, used to indicate the first LTM;

[0566] The third-level execution condition is used to indicate the second LTM;

[0567] Level 1 execution conditions and Level 3 execution conditions are used to indicate the first LTM, the second LTM, or the third LTM;

[0568] The first LTM includes any one of the following: LTM based on layer 1, LTM triggered by DU, and LTM execution triggered by layer 1 measurement results.

[0569] The second LTM includes any one of the following: Layer 3-based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results;

[0570] The third LTM includes any of the following:

[0571] Layer 1-based LTM and Layer 3-based LTM;

[0572] LTM triggered by DU and LTM triggered by CU;

[0573] LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

[0574] In some embodiments, mobility issues include one or more of the following:

[0575] Wireless link failure;

[0576] LTM execution failed;

[0577] LTM execution was successful, but a critical failure occurred.

[0578] Traditional Layer 3 handover failed;

[0579] Conditional switching CHO execution failed;

[0580] The dual-activation protocol stack switching DAPS HO execution failed.

[0581] Figure 8 is a second schematic diagram of the structure of the information processing device provided in this embodiment of the present disclosure. As shown in Figure 8, the device includes:

[0582] The second receiving unit 810 is configured to receive a first report and / or a secondary cell group failure information message, wherein the first report and / or the secondary cell group failure information message records first information for indicating the LTM type; wherein the first report includes one or more of the following: radio link failure report, successful handover report, and successful secondary cell group primary cell addition or change report;

[0583] The first determining unit 820 is used to determine the first network node based on the first information, wherein the first network node is an optimized node for mobility problems.

[0584] In some embodiments, the first information includes one or more of the following:

[0585] First instruction message;

[0586] First execution condition information;

[0587] First measurement result information.

[0588] In some embodiments, the first indication information includes one or more of the following indication information:

[0589] The second indication information indicates a Layer 1 based LTM, or indicates a Layer 3 based LTM, or indicates both a Layer 1 based LTM and a Layer 3 based LTM.

[0590] The third indication information indicates whether it is a Layer 1 based LTM, or whether it is a Layer 3 based LTM, or whether it is both a Layer 1 based LTM and a Layer 3 based LTM.

[0591] The fourth indication information indicates the LTM triggered by the DU, or the LTM triggered by the CU, or both the LTM triggered by the DU and the LTM triggered by the CU.

[0592] The fifth indication information indicates whether the LTM is triggered by DU, or whether the LTM is triggered by CU, or whether the LTM is triggered by both DU and CU.

[0593] The sixth instruction information indicates that LTM execution is triggered based on Layer 1 measurement results, or LTM execution is triggered based on Layer 3 measurement results, or LTM execution is triggered based on both Layer 1 and Layer 3 measurement results.

[0594] The seventh indication information indicates whether the LTM execution is triggered based on the Layer 1 measurement results, or whether the LTM execution is triggered based on the Layer 3 measurement results, or whether the LTM execution is triggered based on both Layer 1 and Layer 3 measurement results.

[0595] In some embodiments, the device further includes:

[0596] The second sending unit is used to send the first instruction information to the terminal.

[0597] In some embodiments, a first indication message is sent to the terminal, including one or more of the following:

[0598] Before sending the LTM cell change command to the terminal, send the first indication information to the terminal;

[0599] Send an LTM cell change command to the terminal. The LTM cell change command carries the first indication information.

[0600] In some embodiments, before sending the LTM cell change command to the terminal, first indication information is sent to the terminal, including:

[0601] Before sending the LTM cell change command to the terminal, a first indication message is sent to the terminal using one of the following methods:

[0602] Send LTM configuration information to the terminal, the LTM configuration information carrying the first indication information; or...

[0603] The CU of the network device sends the first indication information to the terminal via Radio Resource Control (RRC) signaling; or,

[0604] The DU of the network device sends the first instruction information to the terminal through Layer 1 signaling or Layer 2 signaling.

[0605] In some embodiments, the DU of the network device sends first indication information to the terminal via Layer 1 signaling or Layer 2 signaling, including:

[0606] The CU of the network device sends the first indication information to the DU of the network device through the F1 interface signaling;

[0607] The DU of the network device sends the first instruction information to the terminal through Layer 1 signaling or Layer 2 signaling.

[0608] In some embodiments, the CU of the network device sends first indication information to the terminal via RRC signaling, including:

[0609] The DU of the network device sends the first indication information to the CU of the network device through the F1 interface signaling;

[0610] The CU of the network device sends the first instruction information to the terminal via RRC signaling.

[0611] In some embodiments, the first measurement result information includes any of the following:

[0612] Layer 1 measurement results are used to indicate the first LTM;

[0613] The results of the third-layer measurement are used to indicate the second LTM;

[0614] Layer 1 and Layer 3 measurement results are used to indicate the first LTM, second LTM, or third LTM;

[0615] The first LTM includes any one of the following: LTM based on layer 1, LTM triggered by DU, and LTM execution triggered by layer 1 measurement results.

[0616] The second LTM includes any one of the following: Layer 3-based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results;

[0617] The third LTM includes any of the following:

[0618] Layer 1-based LTM and Layer 3-based LTM;

[0619] LTM triggered by DU and LTM triggered by CU;

[0620] LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

[0621] In some embodiments, the first execution condition information includes any of the following:

[0622] Layer 1 execution condition, used to indicate the first LTM;

[0623] The third-level execution condition is used to indicate the second LTM;

[0624] Level 1 execution conditions and Level 3 execution conditions are used to indicate the first LTM, the second LTM, or the third LTM;

[0625] The first LTM includes any one of the following: LTM based on layer 1, LTM triggered by DU, and LTM execution triggered by layer 1 measurement results.

[0626] The second LTM includes any one of the following: Layer 3-based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results;

[0627] The third LTM includes any of the following:

[0628] Layer 1-based LTM and Layer 3-based LTM;

[0629] LTM triggered by DU and LTM triggered by CU;

[0630] LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

[0631] In some embodiments, determining the first network node based on the first information includes:

[0632] If the first information indicates the first LTM, the first network node is determined to be a DU; or,

[0633] If the first information indicates the second LTM, the first network node is determined to be a CU; or,

[0634] In the case where the first information indicates the third LTM, the first network nodes are identified as DU and CU;

[0635] The first LTM includes any one of the following: LTM based on layer 1, LTM triggered by DU, and LTM execution triggered by layer 1 measurement results.

[0636] The second LTM includes any one of the following: Layer 3-based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results;

[0637] The third LTM includes any of the following:

[0638] Layer 1-based LTM and Layer 3-based LTM;

[0639] LTM triggered by DU and LTM triggered by CU;

[0640] LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

[0641] In some embodiments, the device further includes:

[0642] The third sending unit is used to send at least one of the following messages to the first network node via interface signaling: first information, first report, and / or secondary cell group failure information message.

[0643] Figure 9 is a third schematic diagram of the structure of the information processing device provided in this embodiment of the present disclosure. As shown in Figure 9, the device includes:

[0644] The second recording unit 910 is used to record first information indicating the LTM type in the context information of the terminal;

[0645] The third receiving unit 920 is used to receive a first report and / or secondary cell group failure information message sent by the terminal; wherein the first report includes one or more of the following: radio link failure report, successful handover report, and successful addition or change of primary cell in secondary cell group;

[0646] The second determining unit 930 is used to search for first information in the context information of the terminal, and determine the first network node based on the obtained first information. The first network node is an optimization node for mobility issues.

[0647] In some embodiments, the device further includes:

[0648] The fourth sending unit is used to send at least one of the following messages to the first network node via interface signaling: first information, first report, and / or secondary cell group failure information message.

[0649] It should be noted that the information processing 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.

[0650] 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.

[0651] 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.

[0652] In some embodiments, this disclosure also provides a processor-readable storage medium storing a program for causing a processor to execute the information processing methods provided in the method embodiments where the execution subject is a terminal, or to execute the information processing methods provided in the method embodiments where the execution subject is a network device.

[0653] It should be noted that the processor-readable storage medium provided in this embodiment can implement all the method steps implemented in the corresponding method embodiment and achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0654] 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)).

[0655] In some embodiments, this disclosure also provides a non-transitory readable storage medium storing a computer program that causes a processor to execute the information processing methods provided in the method embodiments where the execution subject is a terminal, or the information processing methods provided in the method embodiments where the execution subject is a network device.

[0656] The non-transiently readable storage medium 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.

[0657] In some embodiments, this disclosure also provides a communication device, which stores a computer program for causing the communication device to execute the information processing methods provided in the above-described method embodiments where the execution subject is a terminal, or to execute the information processing methods provided in the above-described method embodiments where the execution subject is a network device.

[0658] The communication device provided in this disclosure 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.

[0659] In some embodiments, this disclosure also provides a chip product storing a computer program, which is used to cause the chip product to execute the information processing methods provided in the above-described method embodiments where the execution subject is a terminal, or to execute the information processing methods provided in the above-described method embodiments where the execution subject is a network device.

[0660] Specifically, the chip products provided in this disclosure can implement all the method steps implemented in the corresponding 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.

[0661] The technical solutions provided in this disclosure are applicable 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 Telecommunication 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 terminal equipment 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.

[0662] 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.

[0663] The network device disclosed in this embodiment may 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 device through one or more sectors on the air interface, or other names. The network device may be used to exchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network equipment 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 5G network architecture, 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 network equipment may include Centralized Unit (CU) nodes and Distributed Unit (DU) nodes, and the Centralized Unit and Distributed Unit may be geographically separated.

[0664] 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.

[0665] 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.

[0666] 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.

[0667] 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.

[0668] 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, comprising: In the event that a mobility LTM configuration information triggered by Layer 1 or Layer 2 is stored and a mobility problem occurs, first information indicating the LTM type is recorded in the first report and / or secondary cell group failure information message; the first report includes one or more of the following: radio link failure report, successful handover report, successful secondary cell group primary cell addition or change report; Send the first report and / or the secondary cell group failure information message to the network device.

2. The information processing method according to claim 1, wherein, The first information includes one or more of the following: First instruction message; First execution condition information; First measurement result information.

3. The information processing method according to claim 2, wherein, The first indication information includes one or more of the following indication information: The second indication information indicates a Layer 1 based LTM, or an LTM based on Layer 3, or both a Layer 1 based LTM and a Layer 3 based LTM. The third indication information indicates whether it is a Layer 1 based LTM, or whether it is a Layer 3 based LTM, or whether it is a Layer 1 based LTM and a Layer 3 based LTM. The fourth indication information indicates an LTM triggered by a distributed unit (DU), or an LTM triggered by a centralized unit (CU), or an LTM triggered by both DU and CU. The fifth indication information indicates whether the LTM is triggered by DU, or whether the LTM is triggered by CU, or whether the LTM is triggered by both DU and CU. The sixth indication information indicates LTM execution triggered based on Layer 1 measurement results, or LTM execution triggered based on Layer 3 measurement results, or LTM execution triggered based on both Layer 1 and Layer 3 measurement results. The seventh indication information indicates whether LTM execution is triggered based on Layer 1 measurement results, or whether LTM execution is triggered based on Layer 3 measurement results, or whether LTM execution is triggered based on both Layer 1 and Layer 3 measurement results.

4. The information processing method according to claim 2, wherein, The method further includes: Receive the first indication information sent by the network device.

5. The information processing method according to claim 2, wherein, The first information recorded in the first report and / or secondary cell group failure information message to indicate the LTM type includes: Based on the execution conditions, the first indication information is recorded in the first report and / or secondary cell group failure information message.

6. The information processing method according to claim 5, wherein, The step of recording the first indication information in the first report and / or secondary cell group failure information message based on execution conditions includes: When the execution condition is a Layer 1 execution condition, the first indication information is recorded in the first report and / or secondary cell group failure information message to indicate the first LTM; or, When the execution condition is a Layer 3 execution condition, the first indication information is recorded in the first report and / or secondary cell group failure information message to indicate the second LTM; or, When the execution conditions include Layer 1 execution conditions and Layer 3 execution conditions, the first indication information is recorded in the first report and / or secondary cell group failure information message to indicate the first LTM, the second LTM or the third LTM. The first LTM includes any one of the following: Layer 1 based LTM, DU-triggered LTM, and LTM execution triggered by Layer 1 measurement results. The second LTM includes any one of the following: Layer 3 based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results; The third LTM includes any of the following: Layer 1-based LTM and Layer 3-based LTM; LTM triggered by DU and LTM triggered by CU; LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

7. The information processing method according to claim 5, wherein, The step of recording the first indication information in the first report and / or secondary cell group failure information message based on execution conditions includes: Based on the execution condition configuration information, record one of the first indication messages in the first report and / or secondary cell group failure information message, or record one of the first indication messages for each candidate cell.

8. The information processing method according to claim 2, wherein, The first measurement result information includes any one of the following: Layer 1 measurement results are used to indicate the first LTM; The results of the third-layer measurement are used to indicate the second LTM; Layer 1 and Layer 3 measurement results are used to indicate the first LTM, second LTM, or third LTM; The first LTM includes any one of the following: Layer 1 based LTM, DU-triggered LTM, and LTM execution triggered by Layer 1 measurement results. The second LTM includes any one of the following: Layer 3 based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results; The third LTM includes any of the following: Layer 1-based LTM and Layer 3-based LTM; LTM triggered by DU and LTM triggered by CU; LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

9. The information processing method according to claim 2, wherein, The first execution condition information includes any one of the following: Layer 1 execution condition, used to indicate the first LTM; The third-level execution condition is used to indicate the second LTM; Level 1 execution conditions and Level 3 execution conditions are used to indicate the first LTM, the second LTM, or the third LTM; The first LTM includes any one of the following: Layer 1 based LTM, DU-triggered LTM, and LTM execution triggered by Layer 1 measurement results. The second LTM includes any one of the following: Layer 3 based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results; The third LTM includes any of the following: Layer 1-based LTM and Layer 3-based LTM; LTM triggered by DU and LTM triggered by CU; LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

10. The information processing method according to claim 1, wherein, The mobility problem includes one or more of the following: Wireless link failure; LTM execution failed; LTM execution was successful, but a critical failure occurred. Traditional Layer 3 handover failed; Conditional switching CHO execution failed; The dual-activation protocol stack switching DAPS HO execution failed.

11. An information processing method applied to a network device, comprising: Receive a first report and / or a secondary cell group failure information message, wherein the first report and / or the secondary cell group failure information message records first information for indicating the LTM type; wherein the first report includes one or more of a radio link failure report, a successful handover report, and a successful secondary cell group primary cell addition or change report; Based on the first information, a first network node is determined, which is an optimization node for mobility issues.

12. The information processing method according to claim 11, wherein, The first information includes one or more of the following: First instruction message; First execution condition information; First measurement result information.

13. The information processing method according to claim 12, wherein, The first indication information includes one or more of the following indication information: The second indication information indicates a Layer 1 based LTM, or an LTM based on Layer 3, or both a Layer 1 based LTM and a Layer 3 based LTM. The third indication information indicates whether it is a Layer 1 based LTM, or whether it is a Layer 3 based LTM, or whether it is a Layer 1 based LTM and a Layer 3 based LTM. The fourth indication information indicates an LTM triggered by a DU, or an LTM triggered by a CU, or both an LTM triggered by a DU and an LTM triggered by a CU. The fifth indication information indicates whether the LTM is triggered by DU, or whether the LTM is triggered by CU, or whether the LTM is triggered by both DU and CU. The sixth indication information indicates LTM execution triggered based on Layer 1 measurement results, or LTM execution triggered based on Layer 3 measurement results, or LTM execution triggered based on both Layer 1 and Layer 3 measurement results. The seventh indication information indicates whether LTM execution is triggered based on Layer 1 measurement results, or whether LTM execution is triggered based on Layer 3 measurement results, or whether LTM execution is triggered based on both Layer 1 and Layer 3 measurement results.

14. The information processing method according to claim 12, wherein, The method further includes: Send the first instruction information to the terminal.

15. The information processing method according to claim 14, wherein, Sending the first indication information to the terminal includes one or more of the following: Before sending the LTM cell change command to the terminal, the first indication information is sent to the terminal; An LTM cell change command is sent to the terminal, and the LTM cell change command carries the first indication information.

16. The information processing method according to claim 15, wherein, Before sending the LTM cell change command to the terminal, sending the first indication information to the terminal includes: Before sending the LTM cell change command to the terminal, the first indication information is sent to the terminal in one of the following ways: Send LTM configuration information to the terminal, wherein the LTM configuration information carries the first indication information; or... The CU of the network device sends the first indication information to the terminal via Radio Resource Control (RRC) signaling; or... The DU of the network device sends the first indication information to the terminal via Layer 1 signaling or Layer 2 signaling.

17. The information processing method according to claim 16, wherein, The DU of the network device sends the first indication information to the terminal via Layer 1 signaling or Layer 2 signaling, including: The CU of the network device sends the first indication information to the DU of the network device through F1 interface signaling; The DU of the network device sends the first indication information to the terminal via Layer 1 signaling or Layer 2 signaling.

18. The information processing method according to claim 16, wherein, The CU of the network device sends the first indication information to the terminal via RRC signaling, including: The DU of the network device sends the first indication information to the CU of the network device through F1 interface signaling; The CU of the network device sends the first indication information to the terminal via RRC signaling.

19. The information processing method according to claim 12, wherein, The first measurement result information includes any one of the following: Layer 1 measurement results are used to indicate the first LTM; The results of the third-layer measurement are used to indicate the second LTM; Layer 1 and Layer 3 measurement results are used to indicate the first LTM, second LTM, or third LTM; The first LTM includes any one of the following: Layer 1 based LTM, DU-triggered LTM, and LTM execution triggered by Layer 1 measurement results. The second LTM includes any one of the following: Layer 3 based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results; The third LTM includes any of the following: Layer 1-based LTM and Layer 3-based LTM; LTM triggered by DU and LTM triggered by CU; LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

20. The information processing method according to claim 12, wherein, The first execution condition information includes any one of the following: Layer 1 execution condition, used to indicate the first LTM; The third-level execution condition is used to indicate the second LTM; Level 1 execution conditions and Level 3 execution conditions are used to indicate the first LTM, the second LTM, or the third LTM; The first LTM includes any one of the following: Layer 1 based LTM, DU-triggered LTM, and LTM execution triggered by Layer 1 measurement results. The second LTM includes any one of the following: Layer 3 based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results; The third LTM includes any of the following: Layer 1-based LTM and Layer 3-based LTM; LTM triggered by DU and LTM triggered by CU; LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

21. The information processing method according to any one of claims 11 to 20, wherein, The step of determining the first network node based on the first information includes: If the first information indicates a first LTM, then the first network node is determined to be a DU; or, If the first information indicates a second LTM, then the first network node is determined to be a CU; or, In the case where the first information indicates a third LTM, the first network node is determined to be a DU and / or a CU; The first LTM includes any one of the following: Layer 1 based LTM, DU-triggered LTM, and LTM execution triggered by Layer 1 measurement results. The second LTM includes any one of the following: Layer 3 based LTM, CU-triggered LTM, and LTM execution triggered by Layer 3 measurement results; The third LTM includes any of the following: Layer 1-based LTM and Layer 3-based LTM; LTM triggered by DU and LTM triggered by CU; LTM execution triggered by Layer 1 measurement results and LTM execution triggered by Layer 3 measurement results.

22. The information processing method according to claim 11, wherein, The method further includes: Send at least one of the following messages to the first network node via interface signaling: the first information, the first report, and / or the secondary cell group failure information message.

23. An information processing method applied to a network device, comprising: Record the first information indicating the LTM type in the terminal's context information; The terminal receives a first report and / or a secondary cell group failure information message; wherein the first report includes one or more of the following: a radio link failure report, a successful handover report, and a successful secondary cell group primary cell addition or change report; The first information is searched in the context information of the terminal, and based on the obtained first information, a first network node is determined, wherein the first network node is an optimization node for mobility issues.

24. The information processing method according to claim 23, wherein, The method further includes: Send at least one of the following to the first network node via interface signaling: the first information, the first report, and / or the secondary cell group failure information message.

25. A terminal, 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: In the event that a mobility LTM configuration information triggered by Layer 1 or Layer 2 is stored and a mobility problem occurs, first information indicating the LTM type is recorded in the first report and / or secondary cell group failure information message; the first report includes one or more of the following: radio link failure report, successful handover report, successful secondary cell group primary cell addition or change report; Send the first report and / or the secondary cell group failure information message to the network device.

26. A network 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: Receive a first report and / or a secondary cell group failure information message, wherein the first report and / or the secondary cell group failure information message records first information for indicating the LTM type; wherein the first report includes one or more of a radio link failure report, a successful handover report, and a successful secondary cell group primary cell addition or change report; Based on the first information, a first network node is determined, which is an optimization node for mobility issues.

27. A network 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: Record the first information indicating the LTM type in the terminal's context information; The terminal receives a first report and / or a secondary cell group failure information message; wherein the first report includes one or more of the following: a radio link failure report, a successful handover report, and a successful secondary cell group primary cell addition or change report; The first information is searched in the context information of the terminal, and based on the obtained first information, a first network node is determined, wherein the first network node is an optimization node for mobility issues.

28. An information processing apparatus, comprising: The first recording unit is configured to record first information indicating the LTM type in the first report and / or secondary cell group failure information message when the LTM configuration information triggered by Layer 1 or Layer 2 is stored and a mobility problem occurs; the first report includes one or more of the following: radio link failure report, successful handover report, and successful secondary cell group primary cell addition or change report; The first sending unit is configured to send the first report and / or the secondary cell group failure information message to the network device.

29. An information processing apparatus, comprising: The second receiving unit is configured to receive a first report and / or a secondary cell group failure information message, wherein the first report and / or the secondary cell group failure information message records first information for indicating the LTM type; wherein the first report includes one or more of a radio link failure report, a successful handover report, and a successful secondary cell group primary cell addition or change report; The first determining unit is configured to determine a first network node based on the first information, wherein the first network node is an optimization node for mobility issues.

30. An information processing apparatus, comprising: The second recording unit is used to record first information indicating the LTM type in the context information of the terminal; The third receiving unit is configured to receive a first report and / or secondary cell group failure information message sent by the terminal; wherein, the first report includes one or more of the following: radio link failure report, successful handover report, and successful addition or change of primary cell in secondary cell group; The second determining unit is used to search for the first information in the context information of the terminal, and based on the obtained first information, determine a first network node, wherein the first network node is an optimization node for mobility issues.

Images