Configuration optimization method, device, apparatus and storage medium

Abstract

This application provides a configuration optimization method, device, apparatus, and storage medium. The method includes: a first network node receiving a first message sent by a second network node; and optimizing the configuration parameters of Conditional Handover (CHO) or Conditional Primary / Secondary Cell Change (CPC) based on the first message. This satisfies the requirements of CHO+candidate SCG configuration optimization and effectively improves the handover success rate.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a configuration optimization method, device, apparatus and storage medium. Background Technology

[0002] In the context of Multi Radio Access Technology Dual connection (MR-DC), considering the desire to select a suitable primary secondary cell (PSCell) for access during Conditional Handover (CHO), related technologies have discussed Conditional Handover with a Conditional Candidate Secondary Cell Group (CHO+candidate SCG). This scheme allows for the configuration of multiple candidate PSCells for each candidate primary cell (PCell) when configuring CHO, i.e., Conditional PSCell change (CPC).

[0003] During the CHO+candidate SCG process, Master Cell Group (MCG) and / or SCG failures may occur. Therefore, it is necessary to optimize the CHO and CPC configurations simultaneously for a specific PCell+PSCell group. However, current technologies only allow for separate CHO and CPC configuration optimizations, which is insufficient to meet the requirements of CHO+candidate SCG configuration optimization and cannot effectively improve the handover success rate. Summary of the Invention

[0004] This application provides a configuration optimization method, device, apparatus, and storage medium to solve the above-mentioned technical problems.

[0005] In a first aspect, embodiments of this application provide a configuration optimization method applied to a first network node, comprising: Receive the first message sent by the second network node; Based on the first message, the configuration parameters of Conditional Handover CHO or Conditional Primary / Secondary Cell Change CPC are optimized.

[0006] In some embodiments, the first message includes one or more of the following: Radio link failure (RLF) report; SCG failure message for auxiliary cell group; Information related to CHO failure; Information related to CPC failure; Information related to the failure of conditional handover in the conditional candidate secondary cell group; Candidate cell pair list; the candidate cell pair list contains at least one set of candidate cell pairs, and any candidate cell pair includes a candidate primary cell PCell and a candidate primary-secondary cell PSCell; Information related to the failure of the candidate cell to the corresponding CPC; Information related to the failure of conditional handover for the candidate cell to the corresponding conditional candidate auxiliary cell group; The cell configuration information of the relevant nodes in the RLF report; the relevant nodes in the RLF report include the neighboring nodes of the primary node corresponding to the RLF report, and the neighboring nodes of the secondary node corresponding to the RLF report; The cell configuration information of the nodes related to the SCG failure information; the nodes related to the SCG failure information include the neighboring nodes of the primary node corresponding to the SCG failure information, and the neighboring nodes of the secondary node corresponding to the SCG failure information.

[0007] In some embodiments, the relevant information regarding the CHO failure includes one or more of the following: The identification information of the PCell that the terminal reselects after CHO failure; Information on the reasons for CHO failure; CHO failure type information.

[0008] In some embodiments, the relevant information regarding the CPC failure includes one or more of the following: The PSCell cell identifier information that the terminal reselects after CPC failure; Information regarding the reasons for CPC failure; Information on the type of CPC failure; CPC configuration instructions are used to indicate how to optimize the CPC configuration.

[0009] In some embodiments, the information related to the conditional handover failure of the conditional candidate secondary cell group includes one or more of the following: After a conditional handover of a conditional candidate secondary cell group fails, the terminal reselects the PCell cell identifier information and the PSCell cell identifier information. Information regarding the reasons for the failure of conditional handover in the conditional candidate auxiliary cell group; Information on the type of conditional handover failure in the conditional candidate secondary cell group; CHO and CPC configuration instructions are provided to indicate how to optimize the configuration of CHO and CPC.

[0010] In some embodiments, the method further includes: Receive the cell configuration information of the neighboring nodes of the second network node sent by the second network node; The optimization of configuration parameters for conditional handover CHO or conditional primary / secondary cell change CPC based on the first message includes: Based on the first message and the cell configuration information of the neighboring nodes of the second network node, the configuration parameters of Conditional Handover (CHO) or Conditional Primary / Secondary Cell Change (CPC) are optimized.

[0011] In some embodiments, the first network node is the master node of the candidate PCell in the candidate cell pair.

[0012] In some embodiments, the first network node is the master node where the PCell is located after the terminal reconnects following a CHO failure, or the master node where the PCell is located selected by the network side.

[0013] Secondly, embodiments of this application provide a configuration optimization method applied to a second network node, comprising: Send a first message to the first network node; the first message is used by the first network node to optimize the configuration parameters of the conditional handover CHO or conditional primary / secondary cell change CPC.

[0014] In some embodiments, the first message includes one or more of the following: Radio link failure (RLF) report; SCG failure message for auxiliary cell group; Information related to CHO failure; Information related to CPC failure; Information related to the failure of conditional handover in the conditional candidate secondary cell group; Candidate cell pair list; the candidate cell pair list contains at least one set of candidate cell pairs, and any candidate cell pair includes a candidate primary cell PCell and a candidate primary-secondary cell PSCell; Information related to the failure of the candidate cell to the corresponding CPC; Information related to the failure of conditional handover for the candidate cell to the corresponding conditional candidate auxiliary cell group; The cell configuration information of the relevant nodes in the RLF report; the relevant nodes in the RLF report include the neighboring nodes of the primary node corresponding to the RLF report, and the neighboring nodes of the secondary node corresponding to the RLF report; The cell configuration information of the nodes related to the SCG failure information; the nodes related to the SCG failure information include the neighboring nodes of the primary node corresponding to the SCG failure information, and the neighboring nodes of the secondary node corresponding to the SCG failure information.

[0015] In some embodiments, the relevant information regarding the CHO failure includes one or more of the following: The identification information of the PCell that the terminal reselects after CHO failure; Information on the reasons for CHO failure; CHO failure type information.

[0016] In some embodiments, the relevant information regarding the CPC failure includes one or more of the following: The PSCell cell identifier information that the terminal reselects after CPC failure; Information regarding the reasons for CPC failure; Information on the type of CPC failure; CPC configuration instructions are used to indicate how to optimize the CPC configuration.

[0017] In some embodiments, the information related to the conditional handover failure of the conditional candidate secondary cell group includes one or more of the following: After a conditional handover of a conditional candidate secondary cell group fails, the terminal reselects the PCell cell identifier information and the PSCell cell identifier information. Information regarding the reasons for the failure of conditional handover in the conditional candidate auxiliary cell group; Information on the type of conditional handover failure in the conditional candidate secondary cell group; CHO and CPC configuration instructions are provided to indicate how to optimize the configuration of CHO and CPC.

[0018] In some embodiments, the method further includes: The cell configuration information of the neighboring nodes of the second network node is sent to the first network node.

[0019] In some embodiments, the first network node is the master node of the candidate PCell in the candidate cell pair.

[0020] In some embodiments, the first network node is the master node where the PCell is located after the terminal reconnects following a CHO failure, or the master node where the PCell is located selected by the network side.

[0021] Thirdly, embodiments of this application provide a first network node, including a memory, a transceiver, and a processor; 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: Receive the first message sent by the second network node; Based on the first message, the configuration parameters of Conditional Handover CHO or Conditional Primary / Secondary Cell Change CPC are optimized.

[0022] In some embodiments, the first message includes one or more of the following: Radio link failure (RLF) report; SCG failure message for auxiliary cell group; Information related to CHO failure; Information related to CPC failure; Information related to the failure of conditional handover in the conditional candidate secondary cell group; Candidate cell pair list; the candidate cell pair list contains at least one set of candidate cell pairs, and any candidate cell pair includes a candidate primary cell PCell and a candidate primary-secondary cell PSCell; Information related to the failure of the candidate cell to the corresponding CPC; Information related to the failure of conditional handover for the candidate cell to the corresponding conditional candidate auxiliary cell group; The cell configuration information of the relevant nodes in the RLF report; the relevant nodes in the RLF report include the neighboring nodes of the primary node corresponding to the RLF report, and the neighboring nodes of the secondary node corresponding to the RLF report; The cell configuration information of the nodes related to the SCG failure information; the nodes related to the SCG failure information include the neighboring nodes of the primary node corresponding to the SCG failure information, and the neighboring nodes of the secondary node corresponding to the SCG failure information.

[0023] In some embodiments, the relevant information regarding the CHO failure includes one or more of the following: The identification information of the PCell that the terminal reselects after CHO failure; Information on the reasons for CHO failure; CHO failure type information.

[0024] In some embodiments, the relevant information regarding the CPC failure includes one or more of the following: The PSCell cell identifier information that the terminal reselects after CPC failure; Information regarding the reasons for CPC failure; Information on the type of CPC failure; CPC configuration instructions are used to indicate how to optimize the CPC configuration.

[0025] In some embodiments, the information related to the conditional handover failure of the conditional candidate secondary cell group includes one or more of the following: After a conditional handover of a conditional candidate secondary cell group fails, the terminal reselects the PCell cell identifier information and the PSCell cell identifier information. Information regarding the reasons for the failure of conditional handover in the conditional candidate auxiliary cell group; Information on the type of conditional handover failure in the conditional candidate secondary cell group; CHO and CPC configuration instructions are provided to indicate how to optimize the configuration of CHO and CPC.

[0026] In some embodiments, the operation further includes: Receive the cell configuration information of the neighboring nodes of the second network node sent by the second network node; The optimization of configuration parameters for conditional handover CHO or conditional primary / secondary cell change CPC based on the first message includes: Based on the first message and the cell configuration information of the neighboring nodes of the second network node, the configuration parameters of Conditional Handover (CHO) or Conditional Primary / Secondary Cell Change (CPC) are optimized.

[0027] In some embodiments, the first network node is the master node of the candidate PCell in the candidate cell pair.

[0028] In some embodiments, the first network node is the master node where the PCell is located after the terminal reconnects following a CHO failure, or the master node where the PCell is located selected by the network side.

[0029] Fourthly, embodiments of this application provide a second network node, including a memory, a transceiver, and a processor; 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: Send a first message to the first network node; the first message is used by the first network node to optimize the configuration parameters of the conditional handover CHO or conditional primary / secondary cell change CPC.

[0030] In some embodiments, the first message includes one or more of the following: Radio link failure (RLF) report; SCG failure message for auxiliary cell group; Information related to CHO failure; Information related to CPC failure; Information related to the failure of conditional handover in the conditional candidate secondary cell group; Candidate cell pair list; the candidate cell pair list contains at least one set of candidate cell pairs, and any candidate cell pair includes a candidate primary cell PCell and a candidate primary-secondary cell PSCell; Information related to the failure of the candidate cell to the corresponding CPC; Information related to the failure of conditional handover for the candidate cell to the corresponding conditional candidate auxiliary cell group; The cell configuration information of the relevant nodes in the RLF report; the relevant nodes in the RLF report include the neighboring nodes of the primary node corresponding to the RLF report, and the neighboring nodes of the secondary node corresponding to the RLF report; The cell configuration information of the nodes related to the SCG failure information; the nodes related to the SCG failure information include the neighboring nodes of the primary node corresponding to the SCG failure information, and the neighboring nodes of the secondary node corresponding to the SCG failure information.

[0031] In some embodiments, the relevant information regarding the CHO failure includes one or more of the following: The identification information of the PCell that the terminal reselects after CHO failure; Information on the reasons for CHO failure; CHO failure type information.

[0032] In some embodiments, the relevant information regarding the CPC failure includes one or more of the following: The PSCell cell identifier information that the terminal reselects after CPC failure; Information regarding the reasons for CPC failure; Information on the type of CPC failure; CPC configuration instructions are used to indicate how to optimize the CPC configuration.

[0033] In some embodiments, the information related to the conditional handover failure of the conditional candidate secondary cell group includes one or more of the following: After a conditional handover of a conditional candidate secondary cell group fails, the terminal reselects the PCell cell identifier information and the PSCell cell identifier information. Information regarding the reasons for the failure of conditional handover in the conditional candidate auxiliary cell group; Information on the type of conditional handover failure in the conditional candidate secondary cell group; CHO and CPC configuration instructions are provided to indicate how to optimize the configuration of CHO and CPC.

[0034] In some embodiments, the operation further includes: The cell configuration information of the neighboring nodes of the second network node is sent to the first network node.

[0035] In some embodiments, the first network node is the master node of the candidate PCell in the candidate cell pair.

[0036] In some embodiments, the first network node is the master node where the PCell is located after the terminal reconnects following a CHO failure, or the master node where the PCell is located selected by the network side.

[0037] Fifthly, embodiments of this application provide a configuration optimization device applied to a first network node, comprising: The receiving module is used to receive the first message sent by the second network node; The optimization module is used to optimize the configuration parameters of conditional handover CHO or conditional primary / secondary cell change CPC based on the first message.

[0038] Sixthly, embodiments of this application provide a configuration optimization device applied to a second network node, comprising: The sending module is used to send a first message to the first network node; the first message is used by the first network node to optimize the configuration parameters of the conditional handover CHO or conditional primary / secondary cell change CPC.

[0039] In a seventh aspect, embodiments of this application also provide a non-transitory readable storage medium storing a computer program for causing a processor to execute the configuration optimization method described in the first or second aspect above.

[0040] Eighthly, embodiments of this application also provide a processor-readable storage medium storing a computer program for causing a processor to perform the configuration optimization method described in the first or second aspect above.

[0041] In a ninth aspect, embodiments of this application also provide a computer-readable storage medium storing a computer program for causing a computer to perform the configuration optimization method described in the first or second aspect above.

[0042] In a tenth aspect, embodiments of this application also provide a communication device, wherein the communication device stores a computer program, the computer program being used to cause the communication device to perform the configuration optimization method described in the first or second aspect as above.

[0043] Eleventhly, embodiments of this application also provide a chip product, wherein the chip product stores a computer program, the computer program being used to cause the chip product to perform the configuration optimization method described in the first or second aspect as above.

[0044] The configuration optimization method, device, apparatus, and storage medium provided in this application embodiment transmit a first message between different nodes configured with CHO+candidate SCG. Different nodes can determine the overall configuration optimization scheme for CHO and CPC, and optimize the configuration parameters of CHO and CPC respectively, thereby meeting the requirements of CHO+candidate SCG configuration optimization and effectively improving the handover success rate. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is one of the flowcharts illustrating the configuration optimization method provided in the embodiments of this application; Figure 2 This is a second schematic flowchart of the configuration optimization method provided in the embodiments of this application; Figure 3 This is one of the schematic diagrams illustrating the execution of CHO+candidate SCG provided in the embodiments of this application; Figure 4 This is the second schematic diagram of the execution of CHO+candidate SCG provided in the embodiments of this application; Figure 5 The third schematic diagram of CHO+candidate SCG execution provided in the embodiments of this application; Figure 6 The fourth schematic diagram of CHO+candidate SCG execution provided in the embodiments of this application; Figure 7 This is a schematic diagram of network node connections provided in an embodiment of this application; Figure 8 This is a schematic diagram of the structure of the first network node provided in an embodiment of this application; Figure 9 This is a schematic diagram of the structure of the second network node provided in an embodiment of this application; Figure 10 This is one of the structural schematic diagrams of the configuration optimization device provided in the embodiments of this application; Figure 11 This is the second schematic diagram of the configuration optimization device provided in the embodiments of this application. Detailed Implementation

[0047] To better understand the solutions provided in the embodiments of this application, a brief introduction to the relevant technologies will be given first.

[0048] 1. Multi-Radio Access Technology DualConnectivity (MR-DC) Network Architecture In a multi-connectivity architecture, a UE may connect to one master node (MN) and one or more secondary nodes (SNs), and interact with these network nodes for signaling and / or data exchange. Both the MN and SN nodes can be long-term evolution (LTE), enterprise long-term evolution (e-LTE), or new radio (NR) nodes. When there is one MN node and one SN node, it is referred to as dual connectivity (DC).

[0049] When a UE is in connected mode, it can connect to one or more network-side nodes, which can be based on one or more Radio Access Technologies (RATs). For example, when MN is an LTE node and SN is an NR node, it is (NG)EN-DC dual connectivity; when MN is an NR node and SN is an LTE node, it is NE-DC dual connectivity; when both MN and SN are NR nodes, it is NR-NR-DC.

[0050] SCG is a serving cell group under the SN node in MR-DC, which includes one PSCell and one or more possible secondary cells (Scell).

[0051] 2. Enhanced mobility The general idea of ​​CHO conditional synchronization reconfiguration is that the network side sends a synchronization reconfiguration command to the terminal in advance. After receiving the conditional synchronization reconfiguration command, the terminal does not immediately initiate a synchronization reconfiguration process in the target cell as in the traditional synchronization reconfiguration process. Instead, it first saves the configuration in the synchronization reconfiguration command and only initiates the synchronization reconfiguration process in the target cell after the conditions configured in the synchronization reconfiguration command are met. A conditional synchronization reconfiguration command allows configuring the synchronization reconfiguration configuration of one or more target cells.

[0052] To ensure optimal access to a suitable PSCell during CHO execution, the related technologies discuss CHO+candidate SCG. This involves configuring multiple candidate PSCell configurations (CPC configurations) for each candidate PCell during CHO configuration. When a candidate PCell configuration is associated with multiple candidate PSCell configurations, the network can provide multiple CHO configurations for that candidate PCell, each corresponding to a different candidate SCG configuration (CPC configuration). The network reconfigures the execution conditions for both the associated PCell and PSCell for each condition. Only when both the PCell and PSCell execution conditions are simultaneously met (CHO and CPC are simultaneously met) will the UE execute the CHO+candidate SCG configuration and access the candidate target PCell and PSCell. Otherwise, the UE does not execute CHO+candidate SCG and continues to evaluate.

[0053] 3. Introduction to Mobility Robustness Optimisation (MRO) during switching MRO (Mobile Resource Recovery) primarily addresses failures during terminal mobility and assists in network optimization. When a handover failure or radio link failure (RLF) occurs, the terminal measures and records the measured frequencies configured for the signal. The terminal also records information related to random access, handover, and re-establishment. After a handover failure, the terminal performs cell selection and then re-establishes or re-accesses the network via Radio Resource Control (RRC) connection re-establishment or RRC connection establishment. The terminal notifies the network that it retains information about the radio link failure or handover failure, which the network can retrieve from the terminal when needed for network optimization.

[0054] MRO features are primarily used to discover and resolve parameter configuration issues during mobility operations, and define three failure types: premature handover, delayed handover, and handover to the wrong cell.

[0055] Late handover: After the terminal has been stably camped in the source cell for a period of time, a radio link failure occurs, and the terminal attempts to establish a connection in a different cell.

[0056] Premature handover: During the handover process, the terminal fails to access the target cell, or it successfully accesses the target cell but the radio link fails shortly afterward, and the terminal attempts to establish a connection in the source cell.

[0057] Switching to the wrong cell: During the handover process, the terminal fails to access the target cell, or successfully accesses the target cell but the radio link fails shortly afterward, and the terminal attempts to establish a connection in a cell that is different from the target cell and the source cell.

[0058] MRO is also used to optimize mobility failures during PSCell transformation and defines three failure types: PSCell transformation too early, PSCell transformation too late, and PSCell transformation to the wrong PSCell.

[0059] PSCell transition too late: After the terminal has been stably camped on the source PSCell cell for a period of time, an SCG failure occurs, and the newly selected suitable PSCell is not the source PSCell.

[0060] Premature PSCell transition: During the PSCell transition process, the terminal fails to access the target PSCell cell, or successfully accesses the target PSCell cell but quickly experiences SCG failure. The newly selected suitable PSCell is the source PSCell.

[0061] PSCell transition to the wrong PSCell cell: During the PSCell transition process, the terminal fails to access the target PSCell cell, or successfully accesses the target PSCell cell but quickly experiences SCG failure. The newly selected suitable PSCell is another PSCell cell that is neither the target PSCell cell nor the source PSCell cell.

[0062] 4. RLF report and SCG failure information message If a radio link failure or handover failure occurs in the MCG, the UE generates an RLF report; if a radio link failure or PSCell addition / transformation failure occurs in the SCG, the UE sends an SCG failure information message to the MN node.

[0063] Both the RLF report and the SCG failure information message contain failure-related information recorded by the UE when the failure occurs.

[0064] The CHO+candidate SCG process requires the simultaneous fulfillment of both PCell and PSCell execution conditions, meaning the CHO and CPC conditions in the configuration must be met concurrently. During the CHO+candidate SCG process, MCG failure and / or SCG failure may occur. Since the RLF report reported after an MCG failure also includes SCG information, and similarly, the SCG failure information message sent after an SCG failure also includes MCG information, the RLF report and SCG failure information message can support triggering optimizations for both CHO and CPC configurations. However, in the current protocol, the RLF report only triggers CHO configuration optimization, and the SCG failure information message only triggers CPC configuration optimization, lacking a holistic consideration of CHO and CPC optimization to meet the requirements of CHO+candidate SCG configuration optimization. This application provides a configuration optimization method, device, apparatus, and storage medium to solve the problem of optimizing configuration parameters for CHO+candidate SCG.

[0065] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0066] Figure 1 This is one of the flowcharts illustrating the configuration optimization method provided in the embodiments of this application, such as... Figure 1 As shown in the figure, this application embodiment provides a configuration optimization method, the execution subject of which can be a first network node. The method includes the following steps: Step 100: Receive the first message sent by the second network node.

[0067] Step 101: Based on the first message, optimize the configuration parameters of Conditional Handover CHO or Conditional Primary / Secondary Cell Change CPC.

[0068] Specifically, in the embodiments of this application, the network node is essentially a functional entity. Different network devices can serve as different network nodes. For example, a first network device can serve as a first network node, and a second network device can serve as a second network node. For instance, a first base station can serve as a first network node, and a second base station can serve as a second network node.

[0069] As mentioned above, in related technologies, if the MCG experiences a radio link failure or handover failure, the terminal generates an RLF report; if the SCG experiences a radio link failure or PSCell addition / transformation failure, the terminal generates an SCG failureinformation message.

[0070] Among them, the RLF report is a non-real-time report. After the network receives the RLF report reported by the terminal, it will send it to the MN node where the terminal last camped for analysis and to optimize the CHO configuration. The SCG failure information message is a real-time message, which is sent to the MN node that the UE was connected to when the SCG failed, and to optimize the CPC configuration.

[0071] In the CHO+candidate SCG scenario, both the CHO and CPC conditions in the configuration need to be met simultaneously. If the MCG and / or SCG switching fails, both the CHO and CPC conditions need to be optimized to meet the requirements of CHO+candidate SCG configuration optimization.

[0072] In this embodiment of the application, the first network node may be the MN node where the PCell that should optimize the CHO configuration is located. In this case, the second network node may be the node that obtains information related to the failure of MCG and / or SCG.

[0073] For example, if node 1 is the MN node where the terminal last resided and receives the RLF report reported by the terminal due to MCG failure, and node 2 is the MN node where the PCell is located after the terminal reconnects after MCG failure, then node 1 can be the second network node and node 2 can be the first network node.

[0074] For example, if node 1 is the MN node that keeps the terminal connected and receives the SCG failure information reported by the terminal due to SCG failure, and node 2 is the MN node where the PCell is located when the terminal fails to switch to the PCell, then node 1 can be the second network node and node 2 can be the first network node.

[0075] The second network node can send a first message to the first network node. The first message may contain information that the first network node can refer to during the CHO configuration optimization process, such as information related to MCG and / or SCG failure, information related to CHO configuration optimization, etc.

[0076] In some implementations, after the second network node obtains the MCG and / or SCG failure information, it can directly send the MCG and / or SCG failure information as the content of the first message to the first network node. For example, the first message may include RLF reports, SCG failure information, etc.

[0077] In some implementations, after the second network node obtains the MCG and / or SCG failure information, it can analyze the MCG and / or SCG failure information to determine the relevant information for CHO configuration optimization, and then send the relevant information for CHO configuration optimization as the content of the first message to the first network node.

[0078] Therefore, after receiving the first message sent by the second network node, the first network node can optimize the configuration parameters of CHO based on the first message.

[0079] Alternatively, in this embodiment, the first network node may be the MN node where the PCell, whose CPC configuration should be optimized, is located.

[0080] In some embodiments, the first network node may be the master node where the PCell is located after the terminal reconnects following a CHO failure, or the first network node may be the master node where the PCell is located selected by the network side.

[0081] In this case, the second network node can be an MN node that acquires information related to MCG and / or SCG failure, or it can be an MN node that performs optimization analysis based on information related to MCG and / or SCG failure, or it can be an MN node that receives analysis results obtained by other nodes based on optimization analysis of information related to MCG and / or SCG failure.

[0082] For example, Node 1 is the MN node where the terminal last resided, receiving the RLF report reported by the terminal due to MCG failure; Node 2 is the MN node where the PCell is located after the terminal reconnects after MCG failure; Node 3 is the MN node where the PScell ​​connects when the terminal's MCG fails. Based on the relevant information of MCG and / or SCG failure, optimization analysis can be performed, so Node 1 and Node 3 can both be used as the second network node, and Node 2 can be used as the first network node.

[0083] The second network node can send a first message to the first network node. The first message may contain information that the first network node can refer to during the CPC configuration optimization process, such as information related to MCG and / or SCG failure, information related to CPC configuration optimization, etc.

[0084] In some implementations, after the second network node obtains the MCG and / or SCG failure information, it can directly send the MCG and / or SCG failure information as the content of the first message to the first network node. For example, the first message may include RLF reports, SCG failure information, etc.

[0085] In some implementations, after the second network node obtains the failure information related to MCG and / or SCG, it can analyze the failure information related to MCG and / or SCG to determine the relevant information related to CPC configuration optimization, and then send the relevant information related to CPC configuration optimization as the content of the first message to the first network node.

[0086] In some implementations, the second network node may receive the analysis results (i.e., CPC configuration optimization information) obtained by other nodes based on the failure information of MCG and / or SCG, and then send the analysis results as the content of the first message to the first network node.

[0087] Therefore, after receiving the first message sent by the second network node, the first network node can optimize the CPC configuration parameters based on the first message.

[0088] It is understood that the second network node can directly send the first message to the first network node, or the second network node can send the first message to the first network node through other nodes (such as a third node). This application embodiment does not limit this.

[0089] For example, if node 1 is the MN node where the terminal last resided and receives the RLF report reported by the terminal due to MCG failure, node 2 is the MN node where the PCell is located after the terminal reconnects after MCG failure, and node 3 is the MN node where the PScell ​​connects when the terminal's MCG fails, then node 1 can act as the second network node, node 3 can act as the third node, and node 2 can act as the first network node. Node 1 can send the first message to node 2 through node 3 via pass-through.

[0090] The configuration optimization method provided in this application provides that by transmitting a first message between different nodes configured with CHO+candidate SCG, different nodes can determine the overall configuration optimization scheme for CHO and CPC, and optimize the configuration parameters of CHO and CPC respectively, thereby meeting the requirements of CHO+candidate SCG configuration optimization and effectively improving the handover success rate.

[0091] In some embodiments, the first message may include one or more of the following: (1) RLF report.

[0092] Specifically, the first message may include an RLF report. As mentioned earlier, the RLF report contains not only MCG information but also SCG information. After receiving the first message sent by the second network node, the first network node can analyze the CHO triggering conditions based on the RLF report; or, the first network node can analyze the CPC triggering conditions based on the RLF report; or, the first network node can analyze both CHO and CPC triggering conditions based on the RLF report. Thus, the first network node can optimize the configuration parameters of CHO or CPC based on the first message.

[0093] (2) SCG failure message.

[0094] Specifically, the first message may include SCG failure information. As mentioned earlier, the SCG failure information contains not only SCG information but also MCG information. After receiving the first message sent by the second network node, the first network node can analyze the CHO triggering conditions based on the SCG failure information; or, the first network node can analyze the CPC triggering conditions based on the SCG failure information; or, the first network node can analyze both the CHO and CPC triggering conditions based on the SCG failure information. Thus, the first network node can optimize the configuration parameters of CHO or CPC based on the first message.

[0095] (3) Information related to CHO failure.

[0096] Specifically, the first message may include information related to CHO failure. When the second network node obtains information related to MCG and / or SCG failure, it can analyze the CHO triggering conditions based on this information to obtain CHO failure information, and then send a first message containing this information to the first network node. After receiving the first message from the second network node, the first network node can optimize the CHO configuration parameters based on the CHO failure information.

[0097] (4) Information related to CPC failure.

[0098] Specifically, the first message may include information related to CPC failure. When the second network node obtains information related to MCG and / or SCG failure, it can analyze the CPC triggering conditions based on this information to obtain CPC failure information, and then send a first message containing this information to the first network node. After receiving the first message from the second network node, the first network node can optimize the CPC configuration parameters based on the CPC failure information.

[0099] (5) Information related to the failure of conditional handover of the candidate auxiliary cell group with conditions.

[0100] Specifically, the first message may include information related to a failed conditional handover of a conditional candidate secondary cell group. If a connection to a group of CHO+candidate SCG candidate cells fails, it can be assumed that a conditional handover of the conditional candidate secondary cell group has failed for that group of CHO+candidate SCG candidate cells. This concept remains consistent throughout the text and will not be elaborated further.

[0101] When the second network node obtains information related to MCG and / or SCG failures, it can analyze the overall triggering conditions of CHO and CPC based on this information. This allows it to obtain information related to the failure of conditional handover for the conditional candidate secondary cell group, and the second network node sends a first message containing this information to the first network node. After receiving the first message from the second network node, the first network node can optimize the configuration parameters of CHO or CPC based on this information.

[0102] (6) Candidate cell pair list; The candidate cell pair list contains at least one set of candidate cell pairs, and any candidate cell pair includes a candidate PCell and a candidate PSCell.

[0103] Specifically, since the terminal may be configured with multiple sets of CHO+candidate SCG candidate cells, the first message may include a list of candidate cell pairs, which contains at least one set of candidate cell pairs. Any set of candidate cell pairs includes a candidate PCell and a candidate PSCell.

[0104] Understandably, each candidate cell pair in the candidate cell pair list can be assigned an identifier or index. Thus, after the first message is received from the second network node, the configuration parameters of CHO or CPC can be optimized based on the relevant information of each candidate cell pair in the candidate cell pair list.

[0105] It is understood that, in some embodiments, when the first message contains candidate cell pairs, the first network node may be the master node of the candidate PCell in the candidate cell pair.

[0106] (7) Information related to the failure of the candidate cell to the corresponding CPC.

[0107] Specifically, the first message may include information related to the failure of CPC for the candidate cell pair. When the second network node obtains the failure information related to MCG and / or SCG, it can analyze the CPC triggering conditions for different candidate cell pairs based on this information, thereby obtaining the CPC failure information for each candidate cell pair, and then send the first message containing this information to the first network node. After receiving the first message from the second network node, the first network node can optimize the CPC configuration parameters for different candidate cell pairs based on the CPC failure information.

[0108] (8) Information related to the failure of conditional handover of the candidate cell to the corresponding conditional candidate auxiliary cell group.

[0109] Specifically, the first message may include information related to the failure of conditional handover for the candidate cell pair to the corresponding conditional candidate secondary cell group. When the second network node obtains the failure information related to MCG and / or SCG, it can analyze the overall triggering conditions of CHO and CPC for different candidate cell pairs based on the MCG and / or SCG failure information, thereby obtaining information related to the failure of conditional handover for the corresponding conditional candidate secondary cell group for different candidate cell pairs, and send a first message containing this information to the first network node. After receiving the first message from the second network node, the first network node can optimize the configuration parameters of the CHO or CPC for different candidate cell pairs based on the information related to the failure of conditional handover for the corresponding conditional candidate secondary cell group for the candidate cell pair.

[0110] (9) Cell configuration information of the relevant nodes in the RLF report; The relevant nodes in the RLF report include the neighboring nodes of the primary node corresponding to the RLF report and the neighboring nodes of the secondary node corresponding to the RLF report.

[0111] Specifically, the measurement results information in the RLF report includes Physical Cell Identities (PCI), frequency points, and corresponding measurement metrics. However, without the cell configuration information of the relevant nodes in the RLF report, the first network node cannot uniquely determine the Cell Global Identity (CGI) based on the measurement results information in the RLF report, and therefore cannot use the measurement results information in the RLF report. Therefore, the first message can include the cell configuration information of the relevant nodes in the RLF report. These relevant nodes include the neighboring nodes of the primary node corresponding to the RLF report, and the neighboring nodes of the secondary node corresponding to the RLF report. Thus, after receiving the first message from the second network node, the first network node can determine the CGI based on the cell configuration information of the relevant nodes in the RLF report, and then optimize the configuration parameters of the CHO or CPC based on the measurement results information in the RLF report.

[0112] (10) Cell configuration information of the relevant nodes of SCG failure information; The relevant nodes of SCG failure information include the adjacent nodes of the primary node corresponding to the SCG failure information and the adjacent nodes of the secondary node corresponding to the SCG failure information.

[0113] Specifically, the measurement result information in the SCG failure information includes PCI, frequency point, and corresponding measurement indicators. However, without the cell configuration information of the relevant nodes in the SCG failure information, the first network node cannot uniquely determine the CGI based on the measurement result information in the SCG failure information and therefore cannot use it. Therefore, the first message can include the cell configuration information of the relevant nodes in the SCG failure information. These relevant nodes include the neighboring nodes of the primary node corresponding to the SCG failure information and the neighboring nodes of the secondary node corresponding to the SCG failure information. Thus, after receiving the first message from the second network node, the first network node can determine the CGI based on the cell configuration information of the relevant nodes in the SCG failure information, and then optimize the configuration parameters of the CHO or CPC based on the measurement result information in the SCG failure information.

[0114] In some embodiments, information related to CHO failure may include one or more of the following: (1) Identification information of the PCell that the terminal reselects after CHO failure. For example, if the terminal reselects PCell1 after CHO failure, the relevant information about CHO failure may include the identifier of PCell1.

[0115] (2) CHO failure reason information, used to indicate the true reason for CHO failure determined by combining CHO and CPC. For example, if both CHO and CPC need to be triggered early to avoid CHO and CPC failure, then the true reason for CHO failure is that CHO switching is too late.

[0116] (3) CHO failure type information, used to indicate the type of CHO failure determined according to the existing process. For example, the three types of CHO failure defined in MRO: PCell handover too early, PCell handover too late, and PCell handover to the wrong cell.

[0117] In some embodiments, information related to CPC failure may include one or more of the following: (1) The PSCell cell identifier information that the terminal reselects after CPC failure. For example, if the terminal reselects PSCell1 after CPC failure, the relevant information about CPC failure may include the identifier of PSCell1.

[0118] (2) The reason for CPC failure is used to indicate the true reason for CPC failure determined by combining CHO and CPC. For example, if both CHO and CPC need to be triggered early to avoid CHO and CPC failure, then the true reason for CPC failure is that CPC change is too late.

[0119] (3) CPC failure type information, used to indicate the type of CPC failure determined according to the existing process. For example, the three types of CPC failure defined in MRO are: PSCell transformation too early, PSCell transformation too late, and PSCell transformation to the wrong PSCell.

[0120] (4) CPC configuration indication information, used to indicate how to optimize the CPC configuration. For example, if the real reason for CPC failure is that the CPC change is too late, the CPC configuration indication information can be used to indicate that the CPC execution time should be brought forward; or, if the real reason for CPC failure is that the CPC change is too early, the CPC configuration indication information can be used to indicate that the CPC execution time should be delayed; or, if the real reason for CPC failure is that the CPC changes to the wrong PSCell, the CPC configuration indication information can be used to indicate that the CPC changes to the correct PSCell; or, the CPC configuration indication information can be used to indicate the deletion of candidate cell configurations for incorrect PSCells, etc.

[0121] In some embodiments, information related to a conditional handover failure with a conditional candidate secondary cell group may include one or more of the following: (1) The PCell and PSCell cell identifiers that the terminal reselects after the conditional handover of the conditional candidate secondary cell group fails. For example, if the terminal reselects PCell1 and PSCell2 after the conditional handover of the conditional candidate secondary cell group fails, the relevant information on the conditional handover failure of the conditional candidate secondary cell group may include the identifiers of PCell1 and PSCell2.

[0122] (2) Information on the reasons for the failure of conditional handover of the conditional candidate secondary cell group, which is used to indicate the true reason for the failure of conditional handover of the conditional candidate secondary cell group determined by combining CHO and CPC. For example, if both CHO and CPC need to be triggered early to avoid CHO and CPC failure, then the true reason for the failure of conditional handover of the conditional candidate secondary cell group is that CHO+candidate SCG is executed too late.

[0123] (3) Type information of conditional handover failure for conditional candidate secondary cell groups, used to indicate the type of conditional handover failure for a determined conditional candidate secondary cell group. The types of CHO failure and CPC failure defined in the MRO can be used to determine the types of conditional handover failure for various conditional candidate secondary cell groups. For example, the types of conditional handover failure for conditional candidate secondary cell groups may include: CHO+candidate SCG executed too early, CHO+candidate SCG executed too late, CHO+candidate SCG executed to the wrong cell, PCell handover to the wrong cell, and PSCell transition to the wrong PSCell, etc.

[0124] (4) CHO and CPC configuration indication information, used to indicate how to optimize the configuration of CHO and CPC. For example, CHO and CPC configuration indication information can be used to indicate that the execution time of CHO+candidate SCG is advanced; or, CHO and CPC configuration indication information can be used to indicate that the execution time of CHO+candidate SCG is delayed; or, CHO and CPC configuration indication information can be used to indicate that CHO+candidate SCG is executed to the correct PCell; or, CHO and CPC configuration indication information can be used to indicate that CHO is switched to the correct PCell; or, CHO and CPC configuration indication information can be used to indicate that CPC is switched to the correct PSCell; or, CHO and CPC configuration indication information can be used to indicate that candidate cell configurations with incorrect PSCells are deleted, etc.

[0125] In some embodiments, the method further includes: Receive the cell configuration information of the neighboring nodes of the second network node sent by the second network node; Based on the first message, the configuration parameters for conditional handover CHO or conditional primary / secondary cell change CPC are optimized, including: Based on the cell configuration information of the neighboring nodes of the first message and the second network node, the configuration parameters of the conditional handover CHO or conditional primary / secondary cell change CPC are optimized.

[0126] Specifically, as mentioned above, the measurement result information in the RLF report and SCG failure information includes PCI, frequency point and corresponding measurement indicators. However, without the cell configuration information of the relevant nodes in the RLF report / SCG failure information, the first network node cannot uniquely determine the CGI based on the measurement result information in the RLF report / SCG failure information, and therefore cannot use the measurement result information in the RLF report / SCG failure information.

[0127] Therefore, in this embodiment of the application, the second network node can also send the cell configuration information of the neighboring nodes of the second network node to the first network node.

[0128] Cell configuration information includes one or more of the cell's frequency information, PCI information, and CGI information. The cell configuration information is used by the first network node to determine the cell identification information when analyzing the measurement results in the RLF report and / or SCG failure information.

[0129] Therefore, the first network node can analyze the CHO triggering conditions and / or CPC triggering conditions based on the cell configuration information of the neighboring nodes of the first message and the second network node, and then optimize the configuration parameters of CHO or CPC.

[0130] Figure 2 This is a second flowchart illustrating the configuration optimization method provided in this application embodiment, as shown below. Figure 2 As shown in the figure, this application embodiment provides a configuration optimization method, the execution subject of which can be a second network node. The method includes the following steps: Step 201: Send a first message to the first network node; the first message is used by the first network node to optimize the configuration parameters of the conditional handover CHO or conditional primary / secondary cell change CPC.

[0131] Specifically, in the embodiments of this application, the network node is essentially a functional entity. Different network devices can serve as different network nodes. For example, a first network device can serve as a first network node, and a second network device can serve as a second network node. For instance, a first base station can serve as a first network node, and a second base station can serve as a second network node.

[0132] As mentioned above, in related technologies, if the MCG experiences a radio link failure or handover failure, the terminal generates an RLF report; if the SCG experiences a radio link failure or PSCell addition / transformation failure, the terminal generates an SCG failureinformation message.

[0133] Among them, the RLF report is a non-real-time report. After the network receives the RLF report reported by the terminal, it will send it to the MN node where the terminal last camped for analysis and to optimize the CHO configuration. The SCG failure information message is a real-time message, which is sent to the MN node that the UE was connected to when the SCG failed, and to optimize the CPC configuration.

[0134] In the CHO+candidate SCG scenario, both the CHO and CPC conditions in the configuration need to be met simultaneously. If the MCG and / or SCG switching fails, both the CHO and CPC conditions need to be optimized to meet the requirements of CHO+candidate SCG configuration optimization.

[0135] In this embodiment of the application, the first network node may be the MN node where the PCell that should optimize the CHO configuration is located. In this case, the second network node may be the node that obtains information related to the failure of MCG and / or SCG.

[0136] For example, if node 1 is the MN node where the terminal last resided and receives the RLF report reported by the terminal due to MCG failure, and node 2 is the MN node where the PCell is located after the terminal reconnects after MCG failure, then node 1 can be the second network node and node 2 can be the first network node.

[0137] For example, if node 1 is the MN node that keeps the terminal connected and receives the SCG failure information reported by the terminal due to SCG failure, and node 2 is the MN node where the PCell is located when the terminal fails to switch to the PCell, then node 1 can be the second network node and node 2 can be the first network node.

[0138] The second network node can send a first message to the first network node. The first message may contain information that the first network node can refer to during the CHO configuration optimization process, such as information related to MCG and / or SCG failure, information related to CHO configuration optimization, etc.

[0139] In some implementations, after the second network node obtains the MCG and / or SCG failure information, it can directly send the MCG and / or SCG failure information as the content of the first message to the first network node. For example, the first message may include RLF reports, SCG failure information, etc.

[0140] In some implementations, after the second network node obtains the MCG and / or SCG failure information, it can analyze the MCG and / or SCG failure information to determine the relevant information for CHO configuration optimization, and then send the relevant information for CHO configuration optimization as the content of the first message to the first network node.

[0141] Therefore, after receiving the first message sent by the second network node, the first network node can optimize the configuration parameters of CHO based on the first message.

[0142] Alternatively, in this embodiment, the first network node may be the MN node where the PCell, whose CPC configuration should be optimized, is located.

[0143] In some embodiments, the first network node may be the master node where the PCell is located after the terminal reconnects following a CHO failure, or the first network node may be the master node where the PCell is located selected by the network side.

[0144] In this case, the second network node can be an MN node that acquires information related to MCG and / or SCG failure, or it can be an MN node that performs optimization analysis based on information related to MCG and / or SCG failure, or it can be an MN node that receives analysis results obtained by other nodes based on optimization analysis of information related to MCG and / or SCG failure.

[0145] For example, Node 1 is the MN node where the terminal last resided, receiving the RLF report reported by the terminal due to MCG failure; Node 2 is the MN node where the PCell is located after the terminal reconnects after MCG failure; Node 3 is the MN node where the PScell ​​connects when the terminal's MCG fails. Based on the relevant information of MCG and / or SCG failure, optimization analysis can be performed, so Node 1 and Node 3 can both be used as the second network node, and Node 2 can be used as the first network node.

[0146] The second network node can send a first message to the first network node. The first message may contain information that the first network node can refer to during the CPC configuration optimization process, such as information related to MCG and / or SCG failure, information related to CPC configuration optimization, etc.

[0147] In some implementations, after the second network node obtains the MCG and / or SCG failure information, it can directly send the MCG and / or SCG failure information as the content of the first message to the first network node. For example, the first message may include RLF reports, SCG failure information, etc.

[0148] In some implementations, after the second network node obtains the failure information related to MCG and / or SCG, it can analyze the failure information related to MCG and / or SCG to determine the relevant information related to CPC configuration optimization, and then send the relevant information related to CPC configuration optimization as the content of the first message to the first network node.

[0149] In some implementations, the second network node may receive the analysis results (i.e., CPC configuration optimization information) obtained by other nodes based on the failure information of MCG and / or SCG, and then send the analysis results as the content of the first message to the first network node.

[0150] Therefore, after receiving the first message sent by the second network node, the first network node can optimize the CPC configuration parameters based on the first message.

[0151] It is understood that the second network node can directly send the first message to the first network node, or the second network node can send the first message to the first network node through other nodes (such as a third node). This application embodiment does not limit this.

[0152] For example, if node 1 is the MN node where the terminal last resided and receives the RLF report reported by the terminal due to MCG failure, node 2 is the MN node where the PCell is located after the terminal reconnects after MCG failure, and node 3 is the MN node where the PScell ​​connects when the terminal's MCG fails, then node 1 can act as the second network node, node 3 can act as the third node, and node 2 can act as the first network node. Node 1 can send the first message to node 2 through node 3 via pass-through.

[0153] The configuration optimization method provided in this application provides that by transmitting a first message between different nodes configured with CHO+candidate SCG, different nodes can determine the overall configuration optimization scheme for CHO and CPC, and optimize the configuration parameters of CHO and CPC respectively, thereby meeting the requirements of CHO+candidate SCG configuration optimization and effectively improving the handover success rate.

[0154] In some embodiments, the first message may include one or more of the following: (1) RLF report.

[0155] Specifically, the first message may include an RLF report. As mentioned earlier, the RLF report contains not only MCG information but also SCG information. After receiving the first message sent by the second network node, the first network node can analyze the CHO triggering conditions based on the RLF report; or, the first network node can analyze the CPC triggering conditions based on the RLF report; or, the first network node can analyze both CHO and CPC triggering conditions based on the RLF report. Thus, the first network node can optimize the configuration parameters of CHO or CPC based on the first message.

[0156] (2) SCG failure message.

[0157] Specifically, the first message may include SCG failure information. As mentioned earlier, the SCG failure information contains not only SCG information but also MCG information. After receiving the first message sent by the second network node, the first network node can analyze the CHO triggering conditions based on the SCG failure information; or, the first network node can analyze the CPC triggering conditions based on the SCG failure information; or, the first network node can analyze both the CHO and CPC triggering conditions based on the SCG failure information. Thus, the first network node can optimize the configuration parameters of CHO or CPC based on the first message.

[0158] (3) Information related to CHO failure.

[0159] Specifically, the first message may include information related to CHO failure. When the second network node obtains information related to MCG and / or SCG failure, it can analyze the CHO triggering conditions based on this information to obtain CHO failure information, and then send a first message containing this information to the first network node. After receiving the first message from the second network node, the first network node can optimize the CHO configuration parameters based on the CHO failure information.

[0160] (4) Information related to CPC failure.

[0161] Specifically, the first message may include information related to CPC failure. When the second network node obtains information related to MCG and / or SCG failure, it can analyze the CPC triggering conditions based on this information to obtain CPC failure information, and then send a first message containing this information to the first network node. After receiving the first message from the second network node, the first network node can optimize the CPC configuration parameters based on the CPC failure information.

[0162] (5) Information related to the failure of conditional handover of the candidate auxiliary cell group with conditions.

[0163] Specifically, the first message may include information related to a failed conditional handover of a conditional candidate secondary cell group. If a connection to a group of CHO+candidate SCG candidate cells fails, it can be assumed that a conditional handover of the conditional candidate secondary cell group has failed for that group of CHO+candidate SCG candidate cells. This concept remains consistent throughout the text and will not be elaborated further.

[0164] When the second network node obtains information related to MCG and / or SCG failures, it can analyze the overall triggering conditions of CHO and CPC based on this information. This allows it to obtain information related to the failure of conditional handover for the conditional candidate secondary cell group, and the second network node sends a first message containing this information to the first network node. After receiving the first message from the second network node, the first network node can optimize the configuration parameters of CHO or CPC based on this information.

[0165] (6) Candidate cell pair list; The candidate cell pair list contains at least one set of candidate cell pairs, and any candidate cell pair includes a candidate PCell and a candidate PSCell.

[0166] Specifically, since the terminal may be configured with multiple sets of CHO+candidate SCG candidate cells, the first message may include a list of candidate cell pairs, which contains at least one set of candidate cell pairs. Any set of candidate cell pairs includes a candidate PCell and a candidate PSCell.

[0167] Understandably, each candidate cell pair in the candidate cell pair list can be assigned an identifier or index. Thus, after the first message is received from the second network node, the configuration parameters of CHO or CPC can be optimized based on the relevant information of each candidate cell pair in the candidate cell pair list.

[0168] It is understood that, in some embodiments, when the first message contains candidate cell pairs, the first network node may be the master node of the candidate PCell in the candidate cell pair.

[0169] (7) Information related to the failure of the candidate cell to the corresponding CPC.

[0170] Specifically, the first message may include information related to the failure of CPC for the candidate cell pair. When the second network node obtains the failure information related to MCG and / or SCG, it can analyze the CPC triggering conditions for different candidate cell pairs based on this information, thereby obtaining the CPC failure information for each candidate cell pair, and then send the first message containing this information to the first network node. After receiving the first message from the second network node, the first network node can optimize the CPC configuration parameters for different candidate cell pairs based on the CPC failure information.

[0171] (8) Information related to the failure of conditional handover of the candidate cell to the corresponding conditional candidate auxiliary cell group.

[0172] Specifically, the first message may include information related to the failure of conditional handover for the candidate cell pair to the corresponding conditional candidate secondary cell group. When the second network node obtains the failure information related to MCG and / or SCG, it can analyze the overall triggering conditions of CHO and CPC for different candidate cell pairs based on the MCG and / or SCG failure information, thereby obtaining information related to the failure of conditional handover for the corresponding conditional candidate secondary cell group for different candidate cell pairs, and send a first message containing this information to the first network node. After receiving the first message from the second network node, the first network node can optimize the configuration parameters of the CHO or CPC for different candidate cell pairs based on the information related to the failure of conditional handover for the corresponding conditional candidate secondary cell group for the candidate cell pair.

[0173] (9) Cell configuration information of the relevant nodes in the RLF report; The relevant nodes in the RLF report include the neighboring nodes of the primary node corresponding to the RLF report and the neighboring nodes of the secondary node corresponding to the RLF report.

[0174] Specifically, the measurement results information in the RLF report includes the PCI, frequency point, and corresponding measurement indicators. However, without the cell configuration information of the relevant nodes in the RLF report, the first network node cannot uniquely determine the CGI based on the measurement results information in the RLF report, and therefore cannot use the measurement results information in the RLF report. Therefore, the first message can include the cell configuration information of the relevant nodes in the RLF report. These relevant nodes include the neighboring nodes of the primary node corresponding to the RLF report, and the neighboring nodes of the secondary node corresponding to the RLF report. Thus, after receiving the first message sent by the second network node, the first network node can determine the CGI based on the cell configuration information of the relevant nodes in the RLF report, and then optimize the configuration parameters of the CHO or CPC based on the measurement results information in the RLF report.

[0175] (10) Cell configuration information of the relevant nodes of SCG failure information; The relevant nodes of SCG failure information include the adjacent nodes of the primary node corresponding to the SCG failure information and the adjacent nodes of the secondary node corresponding to the SCG failure information.

[0176] Specifically, the measurement result information in the SCG failure information includes PCI, frequency point, and corresponding measurement indicators. However, without the cell configuration information of the relevant nodes in the SCG failure information, the first network node cannot uniquely determine the CGI based on the measurement result information in the SCG failure information and therefore cannot use it. Therefore, the first message can include the cell configuration information of the relevant nodes in the SCG failure information. These relevant nodes include the neighboring nodes of the primary node corresponding to the SCG failure information and the neighboring nodes of the secondary node corresponding to the SCG failure information. Thus, after receiving the first message from the second network node, the first network node can determine the CGI based on the cell configuration information of the relevant nodes in the SCG failure information, and then optimize the configuration parameters of the CHO or CPC based on the measurement result information in the SCG failure information.

[0177] In some embodiments, information related to CHO failure may include one or more of the following: (1) Identification information of the PCell that the terminal reselects after CHO failure. For example, if the terminal reselects PCell1 after CHO failure, the relevant information about CHO failure may include the identifier of PCell1.

[0178] (2) CHO failure reason information, used to indicate the true reason for CHO failure determined by combining CHO and CPC. For example, if both CHO and CPC need to be triggered early to avoid CHO and CPC failure, then the true reason for CHO failure is that CHO switching is too late.

[0179] (3) CHO failure type information, used to indicate the type of CHO failure determined according to the existing process. For example, the three types of CHO failure defined in MRO: PCell handover too early, PCell handover too late, and PCell handover to the wrong cell.

[0180] In some embodiments, information related to CPC failure may include one or more of the following: (1) The PSCell cell identifier information that the terminal reselects after CPC failure. For example, if the terminal reselects PSCell1 after CPC failure, the relevant information about CPC failure may include the identifier of PSCell1.

[0181] (2) The reason for CPC failure is used to indicate the true reason for CPC failure determined by combining CHO and CPC. For example, if both CHO and CPC need to be triggered early to avoid CHO and CPC failure, then the true reason for CPC failure is that CPC change is too late.

[0182] (3) CPC failure type information, used to indicate the type of CPC failure determined according to the existing process. For example, the three types of CPC failure defined in MRO are: PSCell transformation too early, PSCell transformation too late, and PSCell transformation to the wrong PSCell.

[0183] (4) CPC configuration indication information, used to indicate how to optimize the CPC configuration. For example, if the real reason for CPC failure is that the CPC change is too late, the CPC configuration indication information can be used to indicate that the CPC execution time should be brought forward; or, if the real reason for CPC failure is that the CPC change is too early, the CPC configuration indication information can be used to indicate that the CPC execution time should be delayed; or, if the real reason for CPC failure is that the CPC changes to the wrong PSCell, the CPC configuration indication information can be used to indicate that the CPC changes to the correct PSCell; or, the CPC configuration indication information can be used to indicate the deletion of candidate cell configurations for incorrect PSCells, etc.

[0184] In some embodiments, information related to a conditional handover failure with a conditional candidate secondary cell group may include one or more of the following: (1) The PCell and PSCell cell identifiers that the terminal reselects after the conditional handover of the conditional candidate secondary cell group fails. For example, if the terminal reselects PCell1 and PSCell2 after the conditional handover of the conditional candidate secondary cell group fails, the relevant information on the conditional handover failure of the conditional candidate secondary cell group may include the identifiers of PCell1 and PSCell2.

[0185] (2) Information on the reasons for the failure of conditional handover of the conditional candidate secondary cell group, which is used to indicate the true reason for the failure of conditional handover of the conditional candidate secondary cell group determined by combining CHO and CPC. For example, if both CHO and CPC need to be triggered early to avoid CHO and CPC failure, then the true reason for the failure of conditional handover of the conditional candidate secondary cell group is that CHO+candidate SCG is executed too late.

[0186] (3) Type information of conditional handover failure for conditional candidate secondary cell groups, used to indicate the type of conditional handover failure for a determined conditional candidate secondary cell group. The types of CHO failure and CPC failure defined in the MRO can be used to determine the types of conditional handover failure for various conditional candidate secondary cell groups. For example, the types of conditional handover failure for conditional candidate secondary cell groups may include: CHO+candidate SCG executed too early, CHO+candidate SCG executed too late, CHO+candidate SCG executed to the wrong cell, PCell handover to the wrong cell, and PSCell transition to the wrong PSCell, etc.

[0187] (4) CHO and CPC configuration indication information, used to indicate how to optimize the configuration of CHO and CPC. For example, CHO and CPC configuration indication information can be used to indicate that the execution time of CHO+candidate SCG is advanced; or, CHO and CPC configuration indication information can be used to indicate that the execution time of CHO+candidate SCG is delayed; or, CHO and CPC configuration indication information can be used to indicate that CHO+candidate SCG is executed to the correct PCell; or, CHO and CPC configuration indication information can be used to indicate that CHO is switched to the correct PCell; or, CHO and CPC configuration indication information can be used to indicate that CPC is switched to the correct PSCell; or, CHO and CPC configuration indication information can be used to indicate that candidate cell configurations with incorrect PSCells are deleted, etc.

[0188] In some embodiments, the method further includes: Send the cell configuration information of the neighboring nodes of the second network node to the first network node.

[0189] Specifically, as mentioned above, the measurement result information in the RLF report and SCG failure information includes PCI, frequency point and corresponding measurement indicators. However, without the cell configuration information of the relevant nodes in the RLF report / SCG failure information, the first network node cannot uniquely determine the CGI based on the measurement result information in the RLF report / SCG failure information, and therefore cannot use the measurement result information in the RLF report / SCG failure information.

[0190] Therefore, in this embodiment of the application, the second network node can also send the cell configuration information of the neighboring nodes of the second network node to the first network node.

[0191] Cell configuration information includes one or more of the cell's frequency information, PCI information, and CGI information. The cell configuration information is used by the first network node to determine the cell identification information when analyzing the measurement results in the RLF report and / or SCG failure information.

[0192] Therefore, the first network node can analyze the CHO triggering conditions and / or CPC triggering conditions based on the cell configuration information of the neighboring nodes of the first message and the second network node, and then optimize the configuration parameters of CHO or CPC.

[0193] Specifically, the configuration optimization method provided in this application embodiment can refer to the above-described configuration optimization method embodiment with the first network node as the execution subject, and can achieve the same technical effect. Here, the parts and beneficial effects that are the same as those in the corresponding method embodiments described above will not be described in detail.

[0194] The configuration optimization methods provided in the above embodiments are further illustrated below with specific examples: Example 1: Processing of RLF reports received by the network in a delayed handover scenario. Figure 3 This is one of the schematic diagrams illustrating the execution of CHO+candidate SCG provided in the embodiments of this application.

[0195] like Figure 3 As shown, after the UE receives the CHO+candidate SCG configuration, the execution conditions are not met, that is, the execution of conditional reconfiguration is not triggered, and the failure occurs on the MCG.

[0196] The UE established dual connectivity, accessing both PCellA and PSCell1, and received the CHO+candidate SCG configuration. This configuration can include candidate cells for PCellB and PSCell2, although PCellB may not be among the candidate cells. During the UE's movement in the direction shown in the diagram, the CHO+candidate SCG was not triggered, meaning the execution condition was not met. The UE moved out of the coverage area of ​​PCellA at the location indicated by the black dot in the diagram, resulting in an RLF (Restricted Response Failure).

[0197] After receiving the RLF report from the UE, the network will send it to the MN node where the UE last camped, i.e. the MN node where PCellA is located, for analysis.

[0198] The UE experienced a Recurrent Least Function Failure (RLF) while accessing PCellA and re-accessed PCellB, meaning a delayed handover occurred on PCellA. PCellA needs to optimize its mobility configuration information to allow the handover to occur earlier. However, the traditional MRO (Mobility Operations Restriction) for handover is no longer suitable for the CHO + candidate SCG scenario because triggering CHO + candidate SCG requires both PCell and PSCell execution conditions to be met simultaneously, or in other words, both the CHO and CPC (conditional PSCell change) trigger conditions must be met simultaneously. Simply advancing the CHO alone cannot advance the triggering of CHO + candidate SCG.

[0199] The PCellA cell of the MN node is responsible for configuring the CHO trigger conditions for the handover from PCellA to PCellB, while the MN node where PCellB is located is responsible for configuring the CPC trigger conditions for the transition from PSCell1 to PSCell2. Therefore, it is necessary for nodes to collaborate in analyzing the reasons for failure and optimizing the mobility configuration of CHO+candidate SCG.

[0200] The solution for inter-node exchange and coordination is as follows: The MN node where PCellA resides analyzes and optimizes the CHO triggering conditions for PCell handover, and sends an RLF report to other MN nodes. These other MN nodes can be: The candidate MN node is the MN node where the PCell is located in the candidate cell list configured in the UE's CHO+candidate SCG; and / or, The cell that the UE reconnects to after RLF or the MN node where the next suitable cell selected by the network is located.

[0201] The analysis and optimization of the triggering conditions for CPC transformation by other MN nodes after receiving the RLF report.

[0202] Taking the above diagram as an example, after the MN node where PCellB is located receives the RLF report, optimization according to the traditional CPC procedure will cause problems. The traditional CPC optimization procedure is as follows: the reselected PSCell may be PSCell1 or PSCell2, because the UE is still within the overlapping coverage area of ​​PSCell1 and PSCell2 at the location where the RLF occurred, so the signal quality of PSCell1 and PSCell2 will be relatively good. If we analyze the CPC failure type of the transition from PSCell1 to PSCell2 based on the newly selected PSCell1, we will get the CPC failure type of too early; if we analyze the CPC failure type of the transition from PSCell1 to PSCell2 based on the newly selected PSCell2, we will find that the CPC does not need to be optimized, because the original CPC selection is not the problem. However, the failure of CHO+candidate SCG is actually due to too late handover. CHO+candidateSCG needs to trigger handover in the horizontal line area to avoid failure. Therefore, if we optimize according to the traditional CPC procedure, neither the conclusion of too early CPC nor no optimization reflects the real cause of failure - too late handover. The MN node where PCellB is located requires further comprehensive analysis and optimization based on other information.

[0203] To address the above issues, the MN node containing PCellA may also send at least one of the following information to other MN nodes: 1) The reason for the failure of the CHO during PCell handover, specifically including the identification information of the newly selected PCell cell after the failure and / or the reason for the handover failure and / or the type of handover failure.

[0204] Taking the above diagram as an example, after the MN node where PCellB is located receives the RLF report, the analysis according to the traditional CPC process might result in a CPC error type of premature handover or no need for optimization. However, referring to the CHO failure reason of the MN node where PCellA is located, which is a delayed handover, the MN node where PCellB is located should also consider performing corresponding CPC optimization according to the CHO failure reason, that is, also consider advancing the CPC execution time. As shown in the diagram, the overlapping area of ​​PSCell1 and PSCell2 is large, and CPC execution can be triggered within this overlapping area. Depending on the UE's movement direction, CPC is generally triggered only when it moves to the boundary of PSCell1 (that is, the area shown by the vertical line). However, for CHO+candidate SCG handover, since the conditions of CHO and CPC must be met simultaneously, only the area shown by the horizontal line can be selected. Therefore, the MN node where PCellB is located can consider the requirements of the CHO execution conditions in CHO+candidate SCG and advance the CPC execution time.

[0205] 2) CPC failure types or how to optimize CPC configuration parameters, specifically including the newly selected PSCell cell identifier information after failure and / or CPC failure reasons and / or CPC failure types and / or CPC configuration optimization methods.

[0206] In the first solution above, the MN node where PCellB resides determines the CPC failure type and performs optimizations. In this solution, the MN node where PCellA resides is responsible for CPC analysis and notifies the MN node where PCellB resides of the CPC failure type or required parameter optimization methods during the transformation from PSCell1 to PSCell2. Therefore, the main difference between these two solutions lies in whether the CPC failure and optimization analysis is deployed on the MN node where PCellA resides or the MN node where PCellB resides.

[0207] 3) The failure type of CHO+candidate SCG as a whole and the parameter configuration optimization method of CHO+candidate SCG as a whole, specifically including the newly selected PCell cell identifier information and PSCell cell identifier information after failure and / or the failure reason of CHO+candidate SCG and / or the failure type of CHO+candidate SCG and / or the configuration optimization method of CHO+candidate SCG.

[0208] The difficulty of this approach lies in defining the failure type of CHO+candidate SCG as a whole, and it is also not easy to analyze the overall optimization direction of CHO and CPC. Figure 3 The scenario shown can be defined as CHO+candidate SCG executing too late.

[0209] 4) List information: Each node in the list transmits optimization information for a set of candidate cells.

[0210] Schemes 2) and 3) only consider the case where the UE is configured with one set of CHO+candidate SCG candidate cells PCellB / PSCell2. In reality, the UE may be configured with multiple sets of CHO+candidate SCG candidate cell lists, as shown in Table 1: Table 1

[0211] In the table above, the UE is configured with 6 candidate cells of CHO+candidate SCG, of which the first 5 belong to MN node 1 and the 6th belongs to MN node 2.

[0212] Therefore, the scheme in point 2) should convey the CPC failure type or how to optimize CPC configuration parameters. If extended to multiple candidate cells, each index needs to individually indicate the CPC failure type or how to optimize CPC configuration parameters. Specifically, for index 1 in the table above, it is necessary to indicate the CPC failure type or how to optimize CPC configuration parameters when transforming from PSCell1 to PSCell2; for index 2 in the table above, it is necessary to indicate the CPC failure type or how to optimize CPC configuration parameters when transforming from PSCell1 to PSCell3; for indices 3 to 6, it is not necessary to indicate the CPC failure type or how to optimize CPC configuration parameters.

[0213] In the scheme at point 3), the failure type of the CHO+candidate SCG as a whole and the parameter configuration optimization method of the CHO+candidate SCG as a whole and the CPC should be communicated. If extended to multiple candidate cells, each index needs to individually indicate the failure type of the CHO+candidate SCG as a whole and the CPC or the parameter configuration optimization method of the CHO+candidate SCG as a whole and the CPC. Specifically, for indices 1 and 2 in the table above, the failure type of the overall CHO and CPC can be indicated as "delayed execution"; for indices 3 to 6 in the table above, the failure type of the overall CHO and CPC can be indicated as "switch to the wrong cell". After the main failure, the reselected cell is PCellB / PSCell2, and the MN where PCellA is located and the candidate cell MN may no longer need to be configured with additional candidate cell lists.

[0214] In summary, the inter-node information sent by the original MN node to other MN nodes, in addition to RLF reports, may also include: 1) The reason for the failure of the CHO during PCell handover, specifically including the identifier information of the newly selected PCell cell after the failure and / or the reason for the handover failure and / or the type of handover failure; and / or 2) An information list, which includes one or more nodes, each containing one or more of the following information: The failure types of CPC or how to optimize CPC configuration parameters, specifically including the newly selected PSCell cell identifier information after failure and / or the CPC failure reason and / or CPC failure type and / or CPC configuration optimization method.

[0215] The failure types of CHO+candidate SCG as a whole and CHO and CPC, or the parameter configuration optimization methods of CHO+candidateSCG as a whole and CHO and CPC, specifically include the newly selected PCell cell identifier information and PSCell cell identifier information after failure and / or the CHO+candidate SCG failure reason and / or the CHO+candidate SCG failure type and / or the CHO+candidate SCG configuration optimization method.

[0216] Other MN nodes can be: The candidate MN node is the MN node where the PCell is located in the candidate cell list configured in the UE's CHO+candidate SCG; and / or, The cell that the UE reconnects to after RLF or the MN node where the next suitable cell selected by the network is located.

[0217] Example 2: Processing of RLF reports received by the network after a handover failure in scenarios of premature handover and handover failure to the wrong cell. Figure 4 This is the second schematic diagram of the execution of CHO+candidate SCG provided in the embodiments of this application.

[0218] like Figure 4 As shown, the UE establishes dual connectivity, accessing PCellA and PSCell1, and receives the CHO+candidate SCG configuration. This configuration can include candidate cells for PCellC / PSCell2, and may also include candidate cells for PCellB / PSCell2. When the UE presses... Figure 4 During the movement in the direction shown, the execution of CHO+candidate SCG to access PCellC / PSCell2 failed, as indicated by the black dot in the figure.

[0219] After receiving the RLF report from the UE, the network will send it to the MN node where the UE last camped for analysis. In the figure, the MN node where PCellA is located is shown.

[0220] After a handover failure, the UE reconnects to the cell PCellB, meaning the handover failure occurred on PCellA to the wrong cell. This implies that PCellA should trigger a handover to PCellB instead of PCellC, and PCellA needs to optimize its mobility configuration information. However, the traditional handover MRO is no longer applicable to the CHO+candidate SCG scenario because triggering CHO+candidate SCG requires both PCell and PSCell execution conditions to be met simultaneously, or in other words, the triggering conditions for CHO and CPC (conditional PSCell change) must be met simultaneously.

[0221] In the diagram, the CHO+candidate SCG switched to the candidate cell PCellC / PSCell2 instead of the candidate cell PCellB / PSCell2. This likely indicates that optimizing not only the CHO configuration conditions but also the CPC trigger conditions is necessary (if the CPC conditions within the PCellB / PSCell2 candidate cell group are difficult to meet, it will prevent a handover to that candidate cell group). The PCellA cell of the MN node is responsible for configuring the CHO trigger conditions for the handover from PCellA to PCellB, while the MN node containing PCellB is responsible for configuring the CPC trigger conditions for the transition from PSCell1 to PSCell2. Therefore, inter-node collaboration is needed to analyze the failure reasons and optimize the mobility configuration of the CHO+candidate SCG.

[0222] The solution for inter-node exchange and coordination is as follows: The MN node where PCellA resides analyzes and optimizes the CHO triggering conditions for PCell handover, and sends an RLF report to other MN nodes. These other MN nodes can be: The candidate MN node is the MN node where the PCell is located in the candidate cell list configured in the UE's CHO+candidate SCG. And / or, After a handover failure, the UE reconnects to the cell or the MN node where the next suitable cell selected by the network is located.

[0223] Analysis and optimization of CPC transition trigger conditions after other MN nodes receive RLF reports. Taking the above diagram as an example, if the MN node where PCellB is located receives an RLF report, optimization according to the traditional CPC procedure will cause problems. The traditional CPC optimization procedure is as follows: the reselected PSCell may be PSCell1 or PSCell2, because the UE is still within the overlapping coverage area of ​​PSCell1 and PSCell2 at the location where the RLF occurred, so the signal quality of PSCell1 and PSCell2 will be relatively good. If we analyze the CPC failure type of the transition from PSCell1 to PSCell2 based on the newly selected PSCell1, we will get the CPC failure type too early (the optimization direction is to postpone CPC execution, making the trigger condition more difficult to meet); if we analyze the CPC failure type of the transition from PSCell1 to PSCell2 based on the newly selected PSCell2, we will find that CPC does not need optimization, because the original CPC selection is not problematic. However, the failure of CHO+candidate SCG actually stemmed from switching to the candidate cell PCellC / PSCell2 instead of selecting the candidate cell PCellB / PSCell2. Only by lowering the triggering conditions for PCellB and / or PSCell2 within the PCellB / PSCell2 candidate cell group, thus ensuring PCellB / PSCell2 is selected as the handover target cell, can the failure be avoided. Therefore, optimizing according to the traditional CPC process, whether it's premature CPC or no optimization, cannot solve the problem. The MN node where PCellB resides requires further comprehensive analysis and optimization based on additional information.

[0224] After the MN node where PCellC resides receives the RLF report, optimizing the CPC configuration according to the traditional CPC procedure is not the correct solution. This is because the CHO+candidate SCG failure is due to switching to the candidate cell of PCellC / PSCell2 instead of selecting the candidate cell of PCellB / PSCell2. Even if the CPC configuration within the candidate cells of PCellC / PSCell2 is adjusted, there is no guarantee that the UE will select the candidate cell of PCellB / PSCell2. Therefore, optimizing only the CPC within the candidate cells of PCellC / PSCell2 is not very meaningful.

[0225] To address the above issues, the MN node containing PCellA may also send at least one of the following information to other MN nodes: 1) The reason for the failure of the CHO during PCell handover, specifically including the identification information of the newly selected PCell cell after the failure and / or the reason for the handover failure and / or the type of handover failure.

[0226] Taking the above diagram as an example, after receiving the RLF report, the MN node where PCellB is located might analyze the CPC error according to the traditional CPC procedure, and the error type might be premature handover or no optimization needed. However, referring to the CHO failure reason of the MN node where PCellA is located, that is, handover to the wrong cell, the MN node where PCellB is located might also consider optimizing the CPC execution conditions to make the CPC execution conditions in the candidate cells of PCellB / PSCell2 better met, that is, the condition requirements are lower than the CPC execution conditions in the candidate cells of PCellC / PSCell2. Of course, after receiving the RLF report, the MN node where PCellC is located might also improve the CPC execution conditions in the candidate cells of PCellC / PSCell2, but since it is not a direct adjustment of the CPC execution conditions in the candidate cells of PCellB / PSCell2, the effect might not be significant, and the MN node where PCellC is located will not optimize according to the traditional CPC procedure.

[0227] 2) CPC failure types or how to optimize CPC configuration parameters, specifically including the newly selected PSCell cell identifier information after failure and / or CPC failure reasons and / or CPC failure types and / or CPC configuration optimization methods.

[0228] In the first solution above, the MN node where PCellB resides determines the CPC failure type and performs optimizations. In this solution, the MN node where PCellA resides is responsible for CPC analysis and notifies the MN node where PCellB resides of the CPC failure type or required parameter optimization methods during the transformation from PSCell1 to PSCell2. Therefore, the main difference between these two solutions lies in whether the CPC failure and optimization analysis is deployed on the MN node where PCellA resides or the MN node where PCellB resides.

[0229] 3) The failure type of CHO+candidate SCG as a whole and the parameter configuration optimization method of CHO+candidate SCG as a whole, specifically including the newly selected PCell cell identifier information and PSCell cell identifier information after failure and / or the failure reason of CHO+candidate SCG and / or the failure type of CHO+candidate SCG and / or the configuration optimization method of CHO+candidate SCG.

[0230] The difficulty of this approach lies in defining the failure type of CHO+candidate SCG as a whole, and it is not easy to analyze the overall optimization direction of CHO and CPC. The scenario shown in the figure above can be defined as CHO+candidate SCG executing to the wrong cell.

[0231] 4) List information: Each node in the list transmits optimization information for a set of candidate cells.

[0232] Schemes 2) and 3) consider the case where the UE's configured CHO+candidate SCG candidate cell is PCellC / PSCell2. The candidate cells may also include PCellB / PSCell2. In reality, the UE may configure more groups of CHO+candidate SCG candidate cells, as shown in Table 2. Table 2

[0233] Table 2 shows that the UE is configured with 6 candidate cells of CHO+candidate SCG, of which the first 5 belong to MN node 1 and the 6th belongs to MN node 2.

[0234] Therefore, the failure type of CPC or how to optimize CPC configuration parameters should be communicated in the scheme at point 2). If extended to multiple candidate cells, each index needs to individually indicate the failure type of CPC or how to optimize CPC configuration parameters. Specifically, for index 1 in the table above, it needs to indicate the failure type of CPC transitioning from PSCell1 to PSCell2 or how to optimize CPC configuration parameters. The type is CPC execution too late (the CPC execution needs to be brought forward) or the CPC execution conditions need to be lowered so that the candidate cell of PCellB / PSCell2 is more likely to be selected. For index 2 in the table above, it needs to indicate the failure type of CPC transitioning from PSCell1 to PSCell3 or how to optimize CPC configuration parameters, that is, CPC to the wrong cell or delete the candidate cell configuration of PCellB / PSCell3 to avoid the candidate cell of PCellB / PSCell3 being selected. The principle is similar for indices 3 to 6, and will not be analyzed further.

[0235] In the scheme at point 3), the failure type of CHO+candidate SCG as a whole and the parameter configuration optimization method of CHO+candidate SCG as a whole and CHO+CPC should be communicated. If extended to multiple candidate cells, each index needs to individually indicate the failure type of CHO+candidate SCG as a whole and the parameter configuration optimization method of CHO+candidate SCG as a whole and CHO+CPC. Specifically, for index 1 in Table 2, the failure type of the whole CHO and CPC can be indicated as delayed execution (requiring earlier execution of CHO and CPC) or reduced execution conditions of CHO and CPC, so that the candidate cell of PCellB / PSCell2 is more likely to be selected; for indices 2~6 in the table above, the failure type of the whole CHO and CPC can be indicated as switching to the wrong cell, and the cell reselected after the main failure is PCellB / PSCell2. The MN where PCellA is located and the candidate cell MN may no longer need to be configured with extra candidate cell lists.

[0236] In summary, the inter-node information sent by the original MN node to other MN nodes, in addition to RLF reports, may also include: 1) The reason for the failure of the CHO during PCell handover, specifically including the identifier information of the newly selected PCell cell after the failure and / or the reason for the handover failure and / or the type of handover failure; and / or 2) An information list, which includes one or more nodes, each containing one or more of the following information: The failure types of CPC or how to optimize CPC configuration parameters, specifically including the newly selected PSCell cell identifier information after failure and / or the CPC failure reason and / or CPC failure type and / or CPC configuration optimization method.

[0237] The failure types of CHO+candidate SCG as a whole and CHO and CPC, or the parameter configuration optimization methods of CHO+candidateSCG as a whole and CHO and CPC, specifically include the newly selected PCell cell identifier information and PSCell cell identifier information after failure and / or the CHO+candidate SCG failure reason and / or the CHO+candidate SCG failure type and / or the CHO+candidate SCG configuration optimization method.

[0238] Other MN nodes can be: The candidate MN node is the MN node where the PCell is located in the candidate cell list configured in the UE's CHO+candidate SCG; and / or, After a handover failure, the UE reconnects to the cell or the MN node where the next suitable cell selected by the network is located.

[0239] Example 3: Processing of RLF reports received by the network after a successful handover that fails shortly after a successful handover in scenarios of premature handover and handover failure to the wrong cell.

[0240] like Figure 4 As shown, the UE establishes dual connectivity, accessing PCellA and PSCell1, and receives the CHO+candidate SCG configuration. This configuration can include candidate cells for PCellC / PSCell2, and may also include candidate cells for PCellB / PSCell2. During the UE's movement in the direction shown in the diagram, after successfully triggering the execution of the CHO+candidate SCG and accessing PCellC / PSCell2, in... Figure 4 The location indicated by the black dot has moved out of the coverage area of ​​PCellC, resulting in an RLF (Reactive Low Flow) event.

[0241] After receiving the RLF report from the UE, the network will send it to the MN node where the UE last camped for analysis. Figure 4 The middle node is the MN node where PCellC is located.

[0242] The UE experienced a handover failure (RLF) shortly after successfully accessing PCellC, and re-accessed to PCellB. This means the handover failure occurred on PCellA to the wrong cell. In other words, PCellA should have triggered a handover to PCellB instead of PCellC, and PCellA needs to optimize its mobility configuration information. However, the traditional handover MRO is no longer applicable to the CHO+candidate SCG scenario because triggering CHO+candidate SCG requires both PCell and PSCell execution conditions to be met simultaneously, or in other words, the triggering conditions for CHO and CPC (conditional PSCell change) must be met simultaneously.

[0243] In the diagram, the CHO+candidate SCG switched to the candidate cell PCellC / PSCell2 instead of the candidate cell PCellB / PSCell2. This may indicate that not only the CHO configuration conditions need to be optimized, but also the CPC trigger conditions. The MN node's PCellA cell is responsible for configuring the CHO trigger conditions for the handover from PCellA to PCellB, while the MN node where PCellB is located is responsible for configuring the CPC trigger conditions for the handover from PSCell1 to PSCell2. Therefore, after receiving the RLF, the MN node where PCellC is located needs to notify the MN nodes where PCellA and PCellB are located to optimize the CHO and CPC.

[0244] The process of exchange and coordination between nodes is as follows: The MN node where PCellC is located analyzes and optimizes the CHO triggering conditions for PCell handover, and sends an RLF report to the MN node where PCellA is located. Alternatively, the MN node where PCellC resides may not perform analysis and optimization, but instead send an RLF report to the MN node where PCellA resides. The MN node where PCellA resides will then analyze and optimize the CHO trigger conditions for PCell switching. Finally, the MN node where PCellA resides will send an RLF report to other MN nodes, which may include: The candidate MN node is the MN node where the PCell is located in the candidate cell list configured in the UE's CHO+candidate SCG; and / or, The cell that the UE reconnects to after RLF or the MN node where the next suitable cell selected by the network is located.

[0245] Similar to the principles in Embodiments 1 and 2, the information transmitted between the MN interface nodes mentioned above, in addition to RLF reports, may also include: 1) The reason for the failure of the CHO during PCell handover, specifically including the identifier information of the newly selected PCell cell after the failure and / or the reason for the handover failure and / or the type of handover failure; and / or 2) An information list, which includes one or more nodes, each containing one or more of the following information: The failure types of CPC or how to optimize CPC configuration parameters, specifically including the newly selected PSCell cell identifier information after failure and / or the CPC failure reason and / or CPC failure type and / or CPC configuration optimization method.

[0246] The failure types of CHO+candidate SCG as a whole and CHO and CPC, or the parameter configuration optimization methods of CHO+candidateSCG as a whole and CHO and CPC, specifically include the newly selected PCell cell identifier information and PSCell cell identifier information after failure and / or the CHO+candidate SCG failure reason and / or the CHO+candidate SCG failure type and / or the CHO+candidate SCG configuration optimization method.

[0247] Example 4: Processing of the original MN receiving the SCG failure Information message in the scenario of SCG failure. Figure 5 The third schematic diagram of CHO+candidate SCG execution provided in the embodiments of this application.

[0248] like Figure 5 As shown, after the UE receives the CHO+candidate SCG configuration, the execution conditions are not met, that is, the execution of conditional reconfiguration is not triggered, and the failure occurs on the SCG.

[0249] The UE established dual connectivity, accessing PCell1 and PSCellA, and received the CHO+candidate SCG configuration. This configuration can include candidate cells for PCell2 and PSCellB, although PSCellB may not be among the candidate cells. During the UE's movement in the direction shown in the diagram, the CHO+candidate SCG was not triggered, meaning the execution condition was not met. Figure 5 The location indicated by the black dot has moved out of the coverage area of ​​PSCellA, resulting in an SCG RLF.

[0250] The UE is still within the PCell1 cell range, meaning the UE still maintains a connection with the MN, and will receive the SCGfailure Information message on the MN.

[0251] The solution for inter-node exchange and coordination is as follows: The MN node where PCell1 is located can analyze and optimize the CHO triggering conditions for PCell handover (if the network selects PCell2 as the next suitable PCell cell, and the UE's access time on PCell1 exceeds the threshold duration, it should be judged as a delayed handover). Afterwards, it sends an SCG failure information message to other MN nodes, which can be: The candidate MN node is the MN node where the PCell is located in the candidate cell list configured in the UE's CHO+candidate SCG; and / or, The MN node where the next suitable PCell cell is located after the SCG fails.

[0252] After receiving the SCG failure Information message, other MN nodes analyze and optimize the triggering conditions for CPC transformation.

[0253] Taking the above diagram as an example, after the MN node where PCell1 resides receives the SCG failure Information message, if analyzed according to the traditional handover failure process, the type of handover failure cannot be defined because there is no RLF failure and no cell reconnected after the failure. However, under the CHO+candidate SCG configuration, the CHO+candidate SCG handover should have been triggered, and PCell1 should have switched to PCell2. Traditionally, the handover band for PCell1 to PCell2 should be deployed in the vertical line area, i.e., the edge of PCell1. However, to consider the simultaneous satisfaction of CHO and CPC, the handover band needs to be deployed in the horizontal line area, which also includes the common coverage area of ​​PSCellA and PSCellB. Therefore, the MN node where PCell1 resides should also address the issue of delayed handover.

[0254] After the MN node where PCell2 resides receives the SCG failure Information message, it can optimize according to the traditional CPC procedure. The traditional CPC optimization process is as follows: the network might reselect PSCell B as a suitable PSCell because the UE is within the coverage area of ​​PSCell B at the location where the SCG RLF occurred. Based on the newly selected PSCell B, the CPC failure type for the transition from PSCell A to PSCell B is analyzed and optimized. If PSCell B is not in the candidate cell list, PSCell B is added; if there are redundant PSCell candidate cell configurations, they can be deleted, etc.

[0255] Similar to the principles in Examples 1 and 2, the MN node where PCell2 is located needs to know the optimization information of the appropriate PCell cell and CHO selected by the PCell1 node so that the MN node where PCell2 is located can continue to optimize the CPC configuration based on the selected PCell. For example, optimizing the CPC configuration in PCell2 / PSCellB.

[0256] Therefore, the inter-node information sent from the original MN to the candidate MN, in addition to the SCG failure Information message, may also include: 1) The reason for the failure of the CHO during PCell handover, specifically including the identifier information of the newly selected PCell cell after the failure and / or the reason for the handover failure and / or the type of handover failure; and / or 2) An information list, which includes one or more nodes, each containing one or more of the following information: The failure types of CPC or how to optimize CPC configuration parameters, specifically including the newly selected PSCell cell identifier information after failure and / or the CPC failure reason and / or CPC failure type and / or CPC configuration optimization method.

[0257] The failure types of CHO+candidate SCG as a whole and CHO and CPC, or the parameter configuration optimization methods of CHO+candidateSCG as a whole and CHO and CPC, specifically include the newly selected PCell cell identifier information and PSCell cell identifier information after failure and / or the CHO+candidate SCG failure reason and / or the CHO+candidate SCG failure type and / or the CHO+candidate SCG configuration optimization method.

[0258] Example 5: Processing of the target MN receiving the SCG failure Information message in the scenario of SCG failure. Figure 6 The fourth schematic diagram of CHO+candidate SCG execution provided in the embodiments of this application.

[0259] like Figure 6 As shown, the UE establishes dual connectivity, accessing PCell1 and PSCellA, and receives the CHO+candidate SCG configuration. This configuration includes candidate cells for PCell3 / PSCellC, and may also include candidate cells for PCell2 / PSCellB. During the UE's movement in the direction shown in the diagram, the execution of the CHO+candidate SCG is triggered, successfully connecting to PCell3 / PSCellC. Figure 6 The location indicated by the black dot has moved out of the coverage area of ​​PSCellC, resulting in an SCG RLF.

[0260] Based on the above scenario, the UE should choose to execute CHO+candidate SCG on PCell2 / PSCellB instead of PCell3 / PSCellC. Optimizing not only the CHO configuration conditions but also the CPC trigger conditions may be necessary. The PCell1 cell of the MN node is responsible for configuring the CHO trigger conditions for PCell handover; the MN node where PCell2 is located is responsible for configuring the CPC trigger conditions for the transition from PSCellA to PSCellB; and the MN node where PCell3 is located is responsible for configuring the CPC trigger conditions for the transition from PSCellA to PSCellC. Therefore, inter-node collaboration is required to analyze the failure reasons and optimize the mobility configuration of CHO+candidate SCG.

[0261] The UE is still within the PCell3 cell range, meaning the UE still maintains a connection with the MN, and will receive the SCG failure Information message on the MN where PCell3 is located.

[0262] The process of exchange and coordination between nodes is as follows: The MN node where PCell3 is located analyzes and optimizes the CHO triggering conditions for PCell handover, and sends an SCGfailure Information message to the MN node where PCell1 is located. Alternatively, the MN node where PCell3 resides may not perform analysis and optimization, but instead send an SCG failure Information message to the MN node where PCell1 resides. The MN node where PCell1 resides will then analyze and optimize the CHO triggering conditions for PCell handover. Finally, the MN node where PCell1 resides will send an SCG failure Information message to other MN nodes, which may be: The candidate MN node is the MN node where the PCell is located in the candidate cell list configured in the UE's CHO+candidate SCG. And / or, The MN node where the next suitable PCell cell is located after the SCG fails.

[0263] Similar to the principles in Embodiments 1 and 2, the information transmitted between the various MN nodes, in addition to the SCG failureInformation message, may also include: 1) The reason for the failure of the CHO during PCell handover, specifically including the identifier information of the newly selected PCell cell after the failure and / or the reason for the handover failure and / or the type of handover failure; and / or 2) An information list, which includes one or more nodes, each containing one or more of the following information: The failure types of CPC or how to optimize CPC configuration parameters, specifically including the newly selected PSCell cell identifier information after failure and / or the CPC failure reason and / or CPC failure type and / or CPC configuration optimization method.

[0264] The failure types of CHO+candidate SCG as a whole and CHO and CPC, or the parameter configuration optimization methods of CHO+candidateSCG as a whole and CHO and CPC, specifically include the newly selected PCell cell identifier information and PSCell cell identifier information after failure and / or the CHO+candidate SCG failure reason and / or the CHO+candidate SCG failure type and / or the CHO+candidate SCG configuration optimization method.

[0265] Example 6: Measurement usage issues with SCG failure Information messages and RLF reports.

[0266] In Examples 1 to 5, SCG failure Information messages and RLF reports are transmitted between the various MN nodes. The receiving MN node needs to use the measurements in the SCG failure Information messages and RLF reports for analysis, but there are some limitations to the use of the current measurements.

[0267] Taking the SCG failure in Example 4 as an example, such as Figure 5 As shown, the UE establishes dual connectivity, accessing both PCell1 and PSCellA. Both PCell1 and PSCellA can be configured for UE measurements. The UE then receives the CHO+candidate SCG configuration, which can include candidate cells for PCell2 and PSCellB, although PSCellB may not be among the candidate cells. During the UE's movement in the direction shown in the diagram, the CHO+candidate SCG is not triggered, meaning the execution condition is not met. Figure 5 The location indicated by the black dot has moved out of the coverage area of ​​PSCellA, resulting in an SCG RLF.

[0268] The UE is still within the PCell1 cell range, meaning the UE still maintains a connection with the MN. It will receive an SCGfailure Information message on the MN, and the measurement results in the message will be the measurement results configured according to PCell1 and / or PSCellA.

[0269] Figure 7 This is a schematic diagram of network node connections provided in an embodiment of this application. Figure 7 As shown, the arrows indicate the XN interface connections between the network nodes: In the existing XN interface process, adjacent nodes will transmit the configuration of the serving cell and neighboring cells within the node. Specifically, this includes information such as the PCI (Physical Cell Identifier), frequency point, and CGI (Cell Global Identifier) ​​of the serving cell within the node, as well as the neighboring cell information corresponding to each serving cell. The neighboring cell information includes information such as PCI, frequency point, and CGI (Cell Global Identifier).

[0270] The measurement results information in the SCG failure Information message and RLF report specifically includes PCI, frequency point, and corresponding measurement indicators.

[0271] After receiving the SCG failure information message, PCell1 of the original MN can uniquely identify the CGI based on the PCI and frequency point in the measurement results. This is because the measurement was configured by the original MN and / or the original SN, and the original MN also knows the serving cell and neighbor cell configuration information of the original SN. However, after the target MN receives the SCG failure information message, although the target MN knows the serving cell and neighbor cell configuration information of the original MN, it does not know the serving cell and neighbor cell configuration information of the original SN. Therefore, for the measurement results in the SCG failure information message, the PCI and frequency point in the measurement results generated by the measurement configured by the original MN can be mapped to the CGI, while the PCI and frequency point in the measurement results generated by the measurement configured by the original SN cannot be mapped to the CGI. Therefore, the target MN cannot use the measurement configured by the original SN and can only use the measurement configured by the original MN. Similarly, the target SN does not know the serving cell and neighbor cell configuration information of the original MN and the original SN, and therefore cannot use the measurement results obtained by the measurement configured by the original MN and the original SN.

[0272] To solve the above problems, one or more of the following solutions may be adopted: 1) The existing XN interface process only transmits the serving cell information and neighboring cell information of the current node. It is also necessary to transmit the serving cell information and neighboring cell information of other relevant nodes. Other relevant nodes can be the neighboring nodes of this node.

[0273] 2) When transmitting measurement results between nodes, the XN interface also needs to transmit cell configuration information. Cell configuration information includes the cell's frequency information, and / or PCI information, and / or CGI information. The cell configuration information is used by the target node to determine the cell identifier information when analyzing the measurement results. The messages currently transmitted by the XN interface to transmit measurement results include, but are not limited to: the XN interface messages used in Examples 1 to 5 for transmitting RLF reports and SCG failure Information messages, HANDOVERREQUEST messages, S-NODE ADDITION REQUEST, S-NODE MODIFICATION REQUIRED, S-NODECHANGE REQUIRED messages, etc. The above messages also need to transmit cell configuration information in the interface when transmitting measurement results.

[0274] Figure 8 This is a schematic diagram of the structure of the first network node provided in an embodiment of this application, as shown below. Figure 8 As shown, the first network node includes a memory 803, a transceiver 801, and a processor 802, wherein: The memory 803 is used to store computer programs; the transceiver 801 is used to send and receive data under the control of the processor 802; the processor 802 is used to read the computer program in the memory 803 and perform the following operations: Receive the first message sent by the second network node; Based on the first message, the configuration parameters of conditional handover CHO or conditional primary / secondary cell change CPC are optimized.

[0275] Among them, Figure 8 In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits together, such as one or more processors represented by processor 802 and memory represented by memory 803. The bus architecture can also link together 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 described further herein. The bus interface provides an interface. The transceiver 801 can 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.

[0276] The processor 802 is responsible for managing the bus architecture and general processing, while the memory 803 can store the data used by the processor 802 when performing operations.

[0277] In some embodiments, the processor 802 may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD), and the processor may also adopt a multi-core architecture.

[0278] The processor executes any of the methods described in the embodiments of this application according to the obtained executable instructions by calling a computer program stored in memory. The processor and memory may also be physically separated.

[0279] In some embodiments, the first message includes one or more of the following: Radio link failure (RLF) report; SCG failure message for auxiliary cell group; Information related to CHO failure; Information related to CPC failure; Information related to the failure of conditional handover in the conditional candidate secondary cell group; Candidate cell pair list; The candidate cell pair list contains at least one candidate cell pair, and any candidate cell pair includes one candidate primary cell PCell and one candidate primary-secondary cell PSCell; Information related to the failure of the candidate cell to the corresponding CPC; Information related to the failure of conditional handover for the candidate cell to the corresponding conditional candidate auxiliary cell group; The cell configuration information of the relevant nodes in the RLF report; the relevant nodes in the RLF report include the neighboring nodes of the primary node corresponding to the RLF report, and the neighboring nodes of the secondary node corresponding to the RLF report; Cell configuration information of nodes related to SCG failure information; the nodes related to SCG failure information include the neighboring nodes of the primary node corresponding to the SCG failure information, and the neighboring nodes of the secondary node corresponding to the SCG failure information.

[0280] In some embodiments, information related to CHO failure includes one or more of the following: The identification information of the PCell that the terminal reselects after CHO failure; Information on the reasons for CHO failure; CHO failure type information.

[0281] In some embodiments, information related to CPC failure includes one or more of the following: The PSCell cell identifier information that the terminal reselects after CPC failure; Information regarding the reasons for CPC failure; Information on the type of CPC failure; CPC configuration instructions are used to indicate how to optimize the CPC configuration.

[0282] In some embodiments, information related to a conditional handover failure of a conditional candidate secondary cell group includes one or more of the following: After a conditional handover of a conditional candidate secondary cell group fails, the terminal reselects the PCell cell identifier information and the PSCell cell identifier information. Information regarding the reasons for the failure of conditional handover in the conditional candidate auxiliary cell group; Information on the type of conditional handover failure in the conditional candidate secondary cell group; CHO and CPC configuration instructions are provided to indicate how to optimize the configuration of CHO and CPC.

[0283] In some embodiments, the operation further includes: Receive the cell configuration information of the neighboring nodes of the second network node sent by the second network node; Based on the first message, the configuration parameters for conditional handover CHO or conditional primary / secondary cell change CPC are optimized, including: Based on the cell configuration information of the neighboring nodes of the first message and the second network node, the configuration parameters of the conditional handover CHO or conditional primary / secondary cell change CPC are optimized.

[0284] In some embodiments, the first network node is the master node where the candidate PCell in the candidate cell pair is located.

[0285] In some embodiments, the first network node is the master node where the PCell is located after the terminal reconnects following a CHO failure, or the master node where the PCell is located selected by the network side.

[0286] It should be noted that the first network node provided in this application embodiment can implement all the method steps implemented by the method embodiment with the first network node as the execution subject, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0287] Figure 9 This is a schematic diagram of the structure of the second network node provided in an embodiment of this application, as shown below. Figure 9 As shown, the second network node includes a memory 903, a transceiver 901, and a processor 902, wherein: The memory 903 is used to store computer programs; the transceiver 901 is used to send and receive data under the control of the processor 902; the processor 902 is used to read the computer program in the memory 903 and perform the following operations: Send a first message to the first network node; the first message is used by the first network node to optimize the configuration parameters of the conditional handover CHO or conditional primary / secondary cell change CPC.

[0288] Among them, Figure 9 In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits together, represented by one or more processors (processor 902) and memory (memory 903). The bus architecture can 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 described further herein. The bus interface provides an interface. The transceiver 901 can 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, etc. The processor 902 is responsible for managing the bus architecture and general processing, and the memory 903 can store data used by the processor 902 during operation.

[0289] The processor 902 can be a CPU, ASIC, FPGA or CPLD, and the processor can also adopt a multi-core architecture.

[0290] In some embodiments, the first message includes one or more of the following: Radio link failure (RLF) report; SCG failure message for auxiliary cell group; Information related to CHO failure; Information related to CPC failure; Information related to the failure of conditional handover in the conditional candidate secondary cell group; Candidate cell pair list; The candidate cell pair list contains at least one candidate cell pair, and any candidate cell pair includes one candidate primary cell PCell and one candidate primary-secondary cell PSCell; Information related to the failure of the candidate cell to the corresponding CPC; Information related to the failure of conditional handover for the candidate cell to the corresponding conditional candidate auxiliary cell group; The cell configuration information of the relevant nodes in the RLF report; the relevant nodes in the RLF report include the neighboring nodes of the primary node corresponding to the RLF report, and the neighboring nodes of the secondary node corresponding to the RLF report; Cell configuration information of nodes related to SCG failure information; the nodes related to SCG failure information include the neighboring nodes of the primary node corresponding to the SCG failure information, and the neighboring nodes of the secondary node corresponding to the SCG failure information.

[0291] In some embodiments, information related to CHO failure includes one or more of the following: The identification information of the PCell that the terminal reselects after CHO failure; Information on the reasons for CHO failure; CHO failure type information.

[0292] In some embodiments, information related to CPC failure includes one or more of the following: The PSCell cell identifier information that the terminal reselects after CPC failure; Information regarding the reasons for CPC failure; Information on the type of CPC failure; CPC configuration instructions are used to indicate how to optimize the CPC configuration.

[0293] In some embodiments, information related to a conditional handover failure of a conditional candidate secondary cell group includes one or more of the following: After a conditional handover of a conditional candidate secondary cell group fails, the terminal reselects the PCell cell identifier information and the PSCell cell identifier information. Information regarding the reasons for the failure of conditional handover in the conditional candidate auxiliary cell group; Information on the type of conditional handover failure in the conditional candidate secondary cell group; CHO and CPC configuration instructions are provided to indicate how to optimize the configuration of CHO and CPC.

[0294] In some embodiments, the operation further includes: Send the cell configuration information of the neighboring nodes of the second network node to the first network node.

[0295] In some embodiments, the first network node is the master node where the candidate PCell in the candidate cell pair is located.

[0296] In some embodiments, the first network node is the master node where the PCell is located after the terminal reconnects following a CHO failure, or the master node where the PCell is located selected by the network side.

[0297] Specifically, the second network node provided in this application embodiment can implement all the method steps implemented by the method embodiment with the second network node as the execution subject, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0298] Figure 10 This is one of the structural schematic diagrams of the configuration optimization device provided in the embodiments of this application, such as... Figure 10 As shown in the figure, this application embodiment provides a configuration optimization device applied to a first network node, including the following modules: The receiving module 1000 is used to receive the first message sent by the second network node; The optimization module 1010 is used to optimize the configuration parameters of conditional handover CHO or conditional primary / secondary cell change CPC based on the first message.

[0299] In some embodiments, the first message includes one or more of the following: Radio link failure (RLF) report; SCG failure message for auxiliary cell group; Information related to CHO failure; Information related to CPC failure; Information related to the failure of conditional handover in the conditional candidate secondary cell group; Candidate cell pair list; The candidate cell pair list contains at least one candidate cell pair, and any candidate cell pair includes one candidate primary cell PCell and one candidate primary-secondary cell PSCell; Information related to the failure of the candidate cell to the corresponding CPC; Information related to the failure of conditional handover for the candidate cell to the corresponding conditional candidate auxiliary cell group; The cell configuration information of the relevant nodes in the RLF report; the relevant nodes in the RLF report include the neighboring nodes of the primary node corresponding to the RLF report, and the neighboring nodes of the secondary node corresponding to the RLF report; Cell configuration information of nodes related to SCG failure information; the nodes related to SCG failure information include the neighboring nodes of the primary node corresponding to the SCG failure information, and the neighboring nodes of the secondary node corresponding to the SCG failure information.

[0300] In some embodiments, information related to CHO failure includes one or more of the following: The identification information of the PCell that the terminal reselects after CHO failure; Information on the reasons for CHO failure; CHO failure type information.

[0301] In some embodiments, information related to CPC failure includes one or more of the following: The PSCell cell identifier information that the terminal reselects after CPC failure; Information regarding the reasons for CPC failure; Information on the type of CPC failure; CPC configuration instructions are used to indicate how to optimize the CPC configuration.

[0302] In some embodiments, information related to a conditional handover failure of a conditional candidate secondary cell group includes one or more of the following: After a conditional handover of a conditional candidate secondary cell group fails, the terminal reselects the PCell cell identifier information and the PSCell cell identifier information. Information regarding the reasons for the failure of conditional handover in the conditional candidate auxiliary cell group; Information on the type of conditional handover failure in the conditional candidate secondary cell group; CHO and CPC configuration instructions are provided to indicate how to optimize the configuration of CHO and CPC.

[0303] In some embodiments, the receiving module 1000 is further configured to: Receive the cell configuration information of the neighboring nodes of the second network node sent by the second network node; Optimization module 1010 is used for: Based on the cell configuration information of the neighboring nodes of the first message and the second network node, the configuration parameters of the conditional handover CHO or conditional primary / secondary cell change CPC are optimized.

[0304] In some embodiments, the first network node is the master node where the candidate PCell in the candidate cell pair is located.

[0305] In some embodiments, the first network node is the master node where the PCell is located after the terminal reconnects following a CHO failure, or the master node where the PCell is located selected by the network side.

[0306] Specifically, the configuration optimization device provided in this application embodiment can implement all the method steps implemented by the method embodiment with the first network node as the execution subject, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0307] Figure 11 This is a second schematic diagram of the configuration optimization device provided in the embodiments of this application, as shown below. Figure 11 As shown in the figure, this application embodiment provides a configuration optimization device applied to a second network node, including the following modules: The sending module 1100 is used to send a first message to the first network node; the first message is used by the first network node to optimize the configuration parameters of the conditional handover CHO or conditional primary / secondary cell change CPC.

[0308] In some embodiments, the first message includes one or more of the following: Radio link failure (RLF) report; SCG failure message for auxiliary cell group; Information related to CHO failure; Information related to CPC failure; Information related to the failure of conditional handover in the conditional candidate secondary cell group; Candidate cell pair list; The candidate cell pair list contains at least one candidate cell pair, and any candidate cell pair includes one candidate primary cell PCell and one candidate primary-secondary cell PSCell; Information related to the failure of the candidate cell to the corresponding CPC; Information related to the failure of conditional handover for the candidate cell to the corresponding conditional candidate auxiliary cell group; The cell configuration information of the relevant nodes in the RLF report; the relevant nodes in the RLF report include the neighboring nodes of the primary node corresponding to the RLF report, and the neighboring nodes of the secondary node corresponding to the RLF report; Cell configuration information of nodes related to SCG failure information; the nodes related to SCG failure information include the neighboring nodes of the primary node corresponding to the SCG failure information, and the neighboring nodes of the secondary node corresponding to the SCG failure information.

[0309] In some embodiments, information related to CHO failure includes one or more of the following: The identification information of the PCell that the terminal reselects after CHO failure; Information on the reasons for CHO failure; CHO failure type information.

[0310] In some embodiments, information related to CPC failure includes one or more of the following: The PSCell cell identifier information that the terminal reselects after CPC failure; Information regarding the reasons for CPC failure; Information on the type of CPC failure; CPC configuration instructions are used to indicate how to optimize the CPC configuration.

[0311] In some embodiments, information related to a conditional handover failure of a conditional candidate secondary cell group includes one or more of the following: After a conditional handover of a conditional candidate secondary cell group fails, the terminal reselects the PCell cell identifier information and the PSCell cell identifier information. Information regarding the reasons for the failure of conditional handover in the conditional candidate auxiliary cell group; Information on the type of conditional handover failure in the conditional candidate secondary cell group; CHO and CPC configuration instructions are provided to indicate how to optimize the configuration of CHO and CPC.

[0312] In some embodiments, the sending module 1100 is further configured to: Send the cell configuration information of the neighboring nodes of the second network node to the first network node.

[0313] In some embodiments, the first network node is the master node where the candidate PCell in the candidate cell pair is located.

[0314] In some embodiments, the first network node is the master node where the PCell is located after the terminal reconnects following a CHO failure, or the master node where the PCell is located selected by the network side.

[0315] Specifically, the configuration optimization device provided in this application embodiment can implement all the method steps implemented by the method embodiment where the execution subject is the second network node, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0316] It should be noted that the division of units / modules in the above embodiments of this application 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 application 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.

[0317] 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 application, 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 application. 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.

[0318] In some embodiments, a non-transient readable storage medium is also provided, the non-transient readable storage medium storing a computer program for causing a processor to execute the configuration optimization methods provided in the above method embodiments.

[0319] Specifically, the non-transiently readable storage medium provided in this application embodiment can implement all the method steps implemented in the above method embodiments and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiments and the beneficial effects will not be described in detail.

[0320] It should be noted that the non-transiently 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)).

[0321] In some embodiments, a processor-readable storage medium is also provided, the processor-readable storage medium storing a computer program for causing the processor to execute the configuration optimization methods provided in the above-described method embodiments.

[0322] Specifically, the processor-readable storage medium provided in this application embodiment can implement all the method steps implemented in the above method embodiments and achieve the same technical effect. Here, the parts that are the same as those in the method embodiments and the beneficial effects will not be described in detail.

[0323] In some embodiments, a computer-readable storage medium is also provided, the computer-readable storage medium storing a computer program for causing a computer to execute the configuration optimization methods provided in the above-described method embodiments.

[0324] Specifically, the computer-readable storage medium provided in the embodiments of this application can implement all the method steps implemented in the above method embodiments and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiments and the beneficial effects will not be described in detail.

[0325] In some embodiments, a communication device is also provided, wherein the communication device stores a computer program for causing the communication device to execute the configuration optimization methods provided in the above-described method embodiments.

[0326] Specifically, the communication device provided in this application embodiment can implement all the method steps implemented in the above method embodiments and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiments and the beneficial effects will not be described in detail.

[0327] In some embodiments, a chip product is also provided, wherein the chip product stores a computer program, the computer program being used to cause the chip product to execute the configuration optimization methods provided in the above-described method embodiments.

[0328] Specifically, the chip product provided in this application embodiment can implement all the method steps implemented in the above method embodiments and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiments and the beneficial effects will not be described in detail.

[0329] It should also be noted that the terms "first," "second," etc., used in the embodiments of this application 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 application 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.

[0330] In the embodiments of this application, the term "and / or" describes the relationship between associated 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 associated objects have an "or" relationship.

[0331] In the embodiments of this application, the term "multiple" refers to two or more, and other quantifiers are similar.

[0332] The technical solutions provided in this application can be applied to various systems, especially 5G or 6G systems. For example, applicable systems include Global System for Mobile Communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS), Long Term Evolution (LTE), LTE Frequency Division Duplex (FDD), LTE Time Division Duplex (TDD), Long Term Evolution Advanced (LTE-A), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX), 5G New Radio (NR), and 6G systems. All of these systems include terminal equipment and network equipment. The system may also include a core network component, such as the Evolved Packet System (EPS) or the 5G system (5GS).

[0333] The terminal devices involved in the embodiments of this application 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 terminal devices may differ in different systems; for example, in a 5G system, a terminal device can be called User Equipment (UE). Wireless terminal devices can communicate with one or more core networks (CNs) via a Radio Access Network (RAN). Wireless terminal devices can be mobile terminal devices, such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, 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). Wireless terminal equipment can 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 this application does not limit the terminology.

[0334] The network device involved in this application embodiment can be a base station, which may include multiple cells providing services to terminals. Depending on the specific application, a base station may also be called an access point, or a device in an access network that communicates with a wireless terminal device through one or more sectors on the air interface, or other names. The network device can 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 can also coordinate the attribute management of the air interface. For example, the network equipment involved in the embodiments of this application can be a base transceiver station (BTS) in a Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA) system, a NodeB in a wide-band Code Division Multiple Access (WCDMA) system, an evolved Node B (eNB or e-NodeB) in a long term evolution (LTE) system, a 5G base station (gNB) in a next generation system, a Home evolved Node B (HeNB), a relay node, a femto, a pico, etc., and is not limited in the embodiments of this application. 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 also be geographically separated.

[0335] In this application, "determining B based on A" means that factor A must be considered when determining B. It is not limited to "B can be determined based solely on A," but should also include: "determining B based on A and C," "determining B based on A, C, and E," "determining C based on A, and further determining B based on C," etc. It can also include using A as a condition for determining B, for example, "when A satisfies the first condition, B is determined using the first method"; or "when A satisfies the second condition, B is determined," or "when A satisfies the third condition, B is determined based on the first parameter," etc. Of course, it can also be a condition where A is a factor in determining B, for example, "when A satisfies the first condition, C is determined using the first method, and B is further determined based on C," etc.

[0336] Network devices and terminal devices can each use one or more antennas for multiple-input multiple-output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multiple-user MIMO (MU-MIMO). Depending on the configuration and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, and can also be diversity transmission, precoding transmission, or beamforming transmission, etc.

[0337] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0338] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. 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, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0339] These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0340] These processors can execute instructions that can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable device for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0341] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A configuration optimization method, characterized in that, Applied to the first network node, including: Receive the first message sent by the second network node; Based on the first message, the configuration parameters of Conditional Handover CHO or Conditional Primary / Secondary Cell Change CPC are optimized.

2. The configuration optimization method according to claim 1, characterized in that, The first message includes one or more of the following: Radio link failure (RLF) report; SCG failure message for auxiliary cell group; Information related to CHO failure; Information related to CPC failure; Information related to the failure of conditional handover in the conditional candidate secondary cell group; Candidate cell pair list; the candidate cell pair list contains at least one set of candidate cell pairs, and any candidate cell pair includes a candidate primary cell PCell and a candidate primary-secondary cell PSCell; Information related to the failure of the candidate cell to the corresponding CPC; Information related to the failure of conditional handover for the candidate cell to the corresponding conditional candidate auxiliary cell group; The cell configuration information of the relevant nodes in the RLF report; the relevant nodes in the RLF report include the neighboring nodes of the primary node corresponding to the RLF report, and the neighboring nodes of the secondary node corresponding to the RLF report; The cell configuration information of the nodes related to the SCG failure information; the nodes related to the SCG failure information include the neighboring nodes of the primary node corresponding to the SCG failure information, and the neighboring nodes of the secondary node corresponding to the SCG failure information.

3. The configuration optimization method according to claim 2, characterized in that, The relevant information regarding the failure of the CHO includes one or more of the following: The identification information of the PCell that the terminal reselects after CHO failure; Information on the reasons for CHO failure; CHO failure type information.

4. The configuration optimization method according to claim 2, characterized in that, The relevant information regarding the CPC failure includes one or more of the following: The PSCell cell identifier information that the terminal reselects after CPC failure; Information regarding the reasons for CPC failure; Information on the type of CPC failure; CPC configuration instructions are used to indicate how to optimize the CPC configuration.

5. The configuration optimization method according to claim 2, characterized in that, The relevant information regarding the conditional handover failure of the conditional candidate secondary cell group includes one or more of the following: After a conditional handover of a conditional candidate secondary cell group fails, the terminal reselects the PCell cell identifier information and the PSCell cell identifier information. Information regarding the reasons for the failure of conditional handover in the conditional candidate auxiliary cell group; Information on the type of conditional handover failure in the conditional candidate secondary cell group; CHO and CPC configuration instructions are provided to indicate how to optimize the configuration of CHO and CPC.

6. The configuration optimization method according to any one of claims 1 to 5, characterized in that, The method further includes: Receive the cell configuration information of the neighboring nodes of the second network node sent by the second network node; The optimization of configuration parameters for conditional handover CHO or conditional primary / secondary cell change CPC based on the first message includes: Based on the first message and the cell configuration information of the neighboring nodes of the second network node, the configuration parameters of Conditional Handover (CHO) or Conditional Primary / Secondary Cell Change (CPC) are optimized.

7. The configuration optimization method according to any one of claims 2 to 5, characterized in that, The first network node is the master node where the candidate PCell in the candidate cell pair is located.

8. The configuration optimization method according to any one of claims 1 to 5, characterized in that, The first network node is the master node where the PCell is located after the terminal reconnects following the CHO failure, or the master node where the PCell is located selected by the network side.

9. A configuration optimization method, characterized in that, Applied to the second network node, including: Send a first message to the first network node; the first message is used by the first network node to optimize the configuration parameters of the conditional handover CHO or conditional primary / secondary cell change CPC.

10. The configuration optimization method according to claim 9, characterized in that, The first message includes one or more of the following: Radio link failure (RLF) report; SCG failure message for auxiliary cell group; Information related to CHO failure; Information related to CPC failure; Information related to the failure of conditional handover in the conditional candidate secondary cell group; Candidate cell pair list; the candidate cell pair list contains at least one set of candidate cell pairs, and any candidate cell pair includes a candidate primary cell PCell and a candidate primary-secondary cell PSCell; Information related to the failure of the candidate cell to the corresponding CPC; Information related to the failure of conditional handover for the candidate cell to the corresponding conditional candidate auxiliary cell group; The cell configuration information of the relevant nodes in the RLF report; the relevant nodes in the RLF report include the neighboring nodes of the primary node corresponding to the RLF report, and the neighboring nodes of the secondary node corresponding to the RLF report; The cell configuration information of the nodes related to the SCG failure information; the nodes related to the SCG failure information include the neighboring nodes of the primary node corresponding to the SCG failure information, and the neighboring nodes of the secondary node corresponding to the SCG failure information.

11. The configuration optimization method according to claim 10, characterized in that, The relevant information regarding the failure of the CHO includes one or more of the following: The identification information of the PCell that the terminal reselects after CHO failure; Information on the reasons for CHO failure; CHO failure type information.

12. The configuration optimization method according to claim 10, characterized in that, The relevant information regarding the CPC failure includes one or more of the following: The PSCell cell identifier information that the terminal reselects after CPC failure; Information regarding the reasons for CPC failure; Information on the type of CPC failure; CPC configuration instructions are used to indicate how to optimize the CPC configuration.

13. The configuration optimization method according to claim 10, characterized in that, The relevant information regarding the conditional handover failure of the conditional candidate secondary cell group includes one or more of the following: After a conditional handover of a conditional candidate secondary cell group fails, the terminal reselects the PCell cell identifier information and the PSCell cell identifier information. Information regarding the reasons for the failure of conditional handover in the conditional candidate auxiliary cell group; Information on the type of conditional handover failure in the conditional candidate secondary cell group; CHO and CPC configuration instructions are provided to indicate how to optimize the configuration of CHO and CPC.

14. The configuration optimization method according to any one of claims 9 to 13, characterized in that, The method further includes: The cell configuration information of the neighboring nodes of the second network node is sent to the first network node.

15. The configuration optimization method according to any one of claims 10 to 13, characterized in that, The first network node is the master node where the candidate PCell in the candidate cell pair is located.

16. The configuration optimization method according to any one of claims 9 to 13, characterized in that, The first network node is the master node where the PCell is located after the terminal reconnects following the CHO failure, or the master node where the PCell is located selected by the network side.

17. A first network node, characterized in that, Includes memory, transceiver, and processor; 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: Receive the first message sent by the second network node; Based on the first message, the configuration parameters of Conditional Handover CHO or Conditional Primary / Secondary Cell Change CPC are optimized.

18. The first network node according to claim 17, characterized in that, The first message includes one or more of the following: Radio link failure (RLF) report; SCG failure message for auxiliary cell group; Information related to CHO failure; Information related to CPC failure; Information related to the failure of conditional handover in the conditional candidate secondary cell group; Candidate cell pair list; the candidate cell pair list contains at least one set of candidate cell pairs, and any candidate cell pair includes a candidate primary cell PCell and a candidate primary-secondary cell PSCell; Information related to the failure of the candidate cell to the corresponding CPC; Information related to the failure of conditional handover for the candidate cell to the corresponding conditional candidate auxiliary cell group; The cell configuration information of the relevant nodes in the RLF report; the relevant nodes in the RLF report include the neighboring nodes of the primary node corresponding to the RLF report, and the neighboring nodes of the secondary node corresponding to the RLF report; The cell configuration information of the nodes related to the SCG failure information; the nodes related to the SCG failure information include the neighboring nodes of the primary node corresponding to the SCG failure information, and the neighboring nodes of the secondary node corresponding to the SCG failure information.

19. The first network node according to claim 18, characterized in that, The relevant information regarding the failure of the CHO includes one or more of the following: The identification information of the PCell that the terminal reselects after CHO failure; Information on the reasons for CHO failure; CHO failure type information.

20. The first network node according to claim 18, characterized in that, The relevant information regarding the CPC failure includes one or more of the following: The PSCell cell identifier information that the terminal reselects after CPC failure; Information regarding the reasons for CPC failure; Information on the type of CPC failure; CPC configuration instructions are used to indicate how to optimize the CPC configuration.

21. The first network node according to claim 18, characterized in that, The relevant information regarding the conditional handover failure of the conditional candidate secondary cell group includes one or more of the following: After a conditional handover of a conditional candidate secondary cell group fails, the terminal reselects the PCell cell identifier information and the PSCell cell identifier information. Information regarding the reasons for the failure of conditional handover in the conditional candidate auxiliary cell group; Information on the type of conditional handover failure in the conditional candidate secondary cell group; CHO and CPC configuration instructions are provided to indicate how to optimize the configuration of CHO and CPC.

22. The first network node according to any one of claims 17 to 21, characterized in that, The operation also includes: Receive the cell configuration information of the neighboring nodes of the second network node sent by the second network node; The optimization of configuration parameters for conditional handover CHO or conditional primary / secondary cell change CPC based on the first message includes: Based on the first message and the cell configuration information of the neighboring nodes of the second network node, the configuration parameters of Conditional Handover (CHO) or Conditional Primary / Secondary Cell Change (CPC) are optimized.

23. The first network node according to any one of claims 18 to 21, characterized in that, The first network node is the master node where the candidate PCell in the candidate cell pair is located.

24. The first network node according to any one of claims 17 to 21, characterized in that, The first network node is the master node where the PCell is located after the terminal reconnects following the CHO failure, or the master node where the PCell is located selected by the network side.

25. A second network node, characterized in that, Includes memory, transceiver, and processor; 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: Send a first message to the first network node; the first message is used by the first network node to optimize the configuration parameters of the conditional handover CHO or conditional primary / secondary cell change CPC.

26. The second network node according to claim 25, characterized in that, The first message includes one or more of the following: Radio link failure (RLF) report; SCG failure message for auxiliary cell group; Information related to CHO failure; Information related to CPC failure; Information related to the failure of conditional handover in the conditional candidate secondary cell group; Candidate cell pair list; the candidate cell pair list contains at least one set of candidate cell pairs, and any candidate cell pair includes a candidate primary cell PCell and a candidate primary-secondary cell PSCell; Information related to the failure of the candidate cell to the corresponding CPC; Information related to the failure of conditional handover for the candidate cell to the corresponding conditional candidate auxiliary cell group; The cell configuration information of the relevant nodes in the RLF report; the relevant nodes in the RLF report include the neighboring nodes of the primary node corresponding to the RLF report, and the neighboring nodes of the secondary node corresponding to the RLF report; The cell configuration information of the nodes related to the SCG failure information; the nodes related to the SCG failure information include the neighboring nodes of the primary node corresponding to the SCG failure information, and the neighboring nodes of the secondary node corresponding to the SCG failure information.

27. The second network node according to claim 26, characterized in that, The relevant information regarding the failure of the CHO includes one or more of the following: The identification information of the PCell that the terminal reselects after CHO failure; Information on the reasons for CHO failure; CHO failure type information.

28. The second network node according to claim 26, characterized in that, The relevant information regarding the CPC failure includes one or more of the following: The PSCell cell identifier information that the terminal reselects after CPC failure; Information regarding the reasons for CPC failure; Information on the type of CPC failure; CPC configuration instructions are used to indicate how to optimize the CPC configuration.

29. The second network node according to claim 26, characterized in that, The relevant information regarding the conditional handover failure of the conditional candidate secondary cell group includes one or more of the following: After a conditional handover of a conditional candidate secondary cell group fails, the terminal reselects the PCell cell identifier information and the PSCell cell identifier information. Information regarding the reasons for the failure of conditional handover in the conditional candidate auxiliary cell group; Information on the type of conditional handover failure in the conditional candidate secondary cell group; CHO and CPC configuration instructions are provided to indicate how to optimize the configuration of CHO and CPC.

30. The second network node according to any one of claims 25 to 29, characterized in that, The operation also includes: The cell configuration information of the neighboring nodes of the second network node is sent to the first network node.

31. The second network node according to any one of claims 26 to 29, characterized in that, The first network node is the master node where the candidate PCell in the candidate cell pair is located.

32. The second network node according to any one of claims 25 to 29, characterized in that, The first network node is the master node where the PCell is located after the terminal reconnects following the CHO failure, or the master node where the PCell is located selected by the network side.

33. A configuration optimization device, characterized in that, Applied to the first network node, including: The receiving module is used to receive the first message sent by the second network node; The optimization module is used to optimize the configuration parameters of conditional handover CHO or conditional primary / secondary cell change CPC based on the first message.

34. A configuration optimization device, characterized in that, Applied to the second network node, including: The sending module is used to send a first message to the first network node; the first message is used by the first network node to optimize the configuration parameters of the conditional handover CHO or conditional primary / secondary cell change CPC.

35. A non-transiently readable storage medium, characterized in that, The non-transiently readable storage medium stores a computer program that causes a processor to execute the configuration optimization method according to any one of claims 1 to 8.

36. A non-transiently readable storage medium, characterized in that, The non-transiently readable storage medium stores a computer program that causes a processor to execute the configuration optimization method according to any one of claims 9 to 16.

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