Mobility failure processing method and device and processor readable storage medium

Abstract

The embodiment of the invention relates to a mobility failure processing method and device and a processor readable storage medium. The method comprises the steps that a first network side node acquires first failure information and / or UE context information; and performing mobility failure analysis based on the first failure information and / or the UE context information. According to the technical scheme provided by the embodiment of the invention, a method for storing the context information of the user and transmitting the failure information at the network side is provided, the failure information of the main cell and the corresponding failure information of the auxiliary cell involved in the failure information are limited, the network side can be supported to complete the goal of parameter configuration optimization in a CHO + CAN SCG scene, and the mobility related indexes are improved.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of wireless communication technologies, and in particular, to a method and device for processing mobility failure, and a processor-readable storage medium. Background Art

[0002] The current mobility robustness optimization (MRO) function in wireless communications only supports traditional handover and conditional handover (CHO) scenarios, but is not applicable to the newly added "CHO+candidate" secondary cell group (SCG) scenario. Summary of the invention

[0003] Based on the above situation of the prior art, the purpose of the embodiments of the present invention is to provide a method, device and processor-readable storage medium for processing mobility failure. By providing a solution for saving and transmitting failure information on the network side, mobility parameter optimization in the newly added "CHO+candidate" SCG scenario is achieved.

[0004] To achieve the above object, according to a first aspect of the present invention, a method for processing mobility failure is provided, which is applied to a first network side node, and the method includes:

[0005] The first network side node obtains first failure information and / or user equipment UE context information;

[0006] performing mobility failure analysis based on the first failure information and / or UE context information;

[0007] The first failure information includes at least one of the following information: a candidate primary cell list, a candidate secondary cell list, and a correspondence between the candidate primary and secondary cell lists;

[0008] The UE context information includes UE identification information, and the UE identification information includes at least one of the following information: an identification of the UE in a primary cell of the first network side node, an identification of the UE in a secondary cell of the first network side node, an identification of the UE in a primary cell of the second network side node, and an identification of the UE in a secondary cell of the second network side node;

[0009] The first network side node and the second network side node are mobility parameter configuration optimization related nodes.

[0010] Furthermore, the method further comprises:

[0011] The first network side node sends second failure information and / or UE context information to the second network side node; the second failure information is used for the second network side node to perform optimization;

[0012] The second failure information includes the first failure information.

[0013] Furthermore, the first failure information further includes at least one of the following information: a radio link failure RLF report, a secondary cell group failure information SCG Failure Information, and a primary cell group failure information MCG Failure Information;

[0014] The RLF report, SCG Failure Information and MCG Failure Information are obtained from the UE.

[0015] Furthermore, the UE context information also includes measurement configuration information and radio resource configuration information.

[0016] Furthermore, the second failure information further includes at least one of the following information: cell identification information, switching best primary cell identification information, changing best secondary cell identification information, and failure type indication information.

[0017] Furthermore, the method further comprises:

[0018] The first network side node receives an enhanced information element MobilityInformation IE sent by the second network side node;

[0019] The first network side node sends the enhanced information element Mobility Information IE to the second network side node, and the enhanced information element Mobility Information IE is used for the second network side node to perform optimization.

[0020] Furthermore, the candidate secondary cell list includes at least one of the following information corresponding to each candidate secondary cell:

[0021] Cell identification information;

[0022] Trigger condition information;

[0023] The primary cell candidate cell identification information corresponding to the secondary cell.

[0024] Further, the candidate primary cell list includes, for each primary cell, a candidate secondary cell list corresponding to the primary cell, and each candidate secondary cell in the candidate secondary cell list includes at least one of the following information:

[0025] Cell identification information;

[0026] Trigger condition information.

[0027] According to a second aspect of the present invention, a method for processing mobility failure is provided, which is applied to a second network side node, and the method includes:

[0028] The second network side node sends first failure information and / or UE context information to the first network side node;

[0029] The second network side node receives second failure information and / or UE context information sent by the first network side node;

[0030] The second network side node performs optimization based on the second failure information and / or UE context information;

[0031] Among them, the second failure information includes the first failure information; the first failure information and / or UE context information is obtained by the first network side node and used by the first network side node to perform mobility failure analysis; the first failure information includes a candidate primary cell list, a candidate secondary cell list and / or a correspondence between a candidate primary and secondary cell list; the UE context information at least includes UE identification information, and the UE identification information includes at least one of the following information: an identification of the UE in the primary cell of the first network side node, an identification of the UE in the secondary cell of the first network side node, an identification of the UE in the primary cell of the second network side node, and an identification of the UE in the secondary cell of the second network side node; the first network side node and the second network side node are mobility parameter configuration optimization related nodes.

[0032] Furthermore, the method further comprises:

[0033] The second network side node sends an enhanced information element MobilityInformation IE to the first network side node;

[0034] The second network side node receives the enhanced information element Mobility Information IE sent by the first network side node;

[0035] The second network side node performs optimization based on the enhanced information element Mobility Information IE.

[0036] According to a third aspect of the present invention, there is provided a device for processing mobility failure, which is applied to a first network side node and includes a memory, a transceiver, and a processor:

[0037] Memory for storing computer programs;

[0038] a transceiver, for transmitting and receiving data under the control of the processor;

[0039] A processor is configured to read the computer program in the memory and perform the following operations:

[0040] The first network side node obtains first failure information and / or UE context information;

[0041] performing mobility failure analysis based on the first failure information and / or UE context information;

[0042] Among them, the first failure information includes a candidate primary cell list, a candidate secondary cell list and / or a correspondence between a candidate primary and secondary cell list; the UE context information includes at least UE identification information, and the UE identification information includes at least one of the following information: an identification of the UE in the primary cell of the first network side node, an identification of the UE in the secondary cell of the first network side node, an identification of the UE in the primary cell of the second network side node, and an identification of the UE in the secondary cell of the second network side node; the first network side node and the second network side node are mobility parameter configuration optimization related nodes.

[0043] Furthermore, the operations performed also include:

[0044] The first network side node sends second failure information and / or UE context information to the second network side node; the second failure information is used for the second network side node to perform optimization;

[0045] The second failure information includes the first failure information.

[0046] Furthermore, the first failure information further includes at least one of the following information: a radio link failure RLF report, a secondary cell group failure information SCG Failure Information, and a primary cell group failure information MCG Failure Information;

[0047] The RLF report, SCG Failure Information and MCG Failure Information are obtained from the UE.

[0048] Furthermore, the UE context information also includes measurement configuration information and radio resource configuration information.

[0049] Furthermore, the second failure information further includes at least one of the following information: cell identification information, switching best primary cell identification information, changing best secondary cell identification information, and failure type indication information.

[0050] Furthermore, the operations performed also include:

[0051] The first network side node receives an enhanced information element MobilityInformation IE sent by the second network side node;

[0052] The first network side node sends the enhanced information element Mobility Information IE to the second network side node, and the enhanced information element Mobility Information IE is used for the second network side node to perform optimization.

[0053] Furthermore, the candidate secondary cell list includes at least one of the following information corresponding to each candidate secondary cell:

[0054] Cell identification information;

[0055] Trigger condition information;

[0056] The primary cell candidate cell identification information corresponding to the secondary cell.

[0057] Further, the candidate primary cell list includes, for each primary cell, a candidate secondary cell list corresponding to the primary cell, and each candidate secondary cell in the candidate secondary cell list includes at least one of the following information:

[0058] Cell identification information;

[0059] Trigger condition information.

[0060] According to a fourth aspect of the present invention, there is provided a device for processing mobility failure, which is applied to a second network side node and includes a memory, a transceiver, and a processor:

[0061] Memory for storing computer programs;

[0062] a transceiver, for transmitting and receiving data under the control of the processor;

[0063] A processor is configured to read the computer program in the memory and perform the following operations:

[0064] The second network side node sends first failure information to the first network side node;

[0065] The second network side node receives second failure information and / or UE context information sent by the first network side node;

[0066] The second network side node performs optimization based on the second failure information and / or UE context information;

[0067] Among them, the second failure information includes the first failure information; the first failure information and / or UE context information is obtained by the first network side node and used by the first network side node to perform mobility failure analysis; the first failure information includes a candidate primary cell list, a candidate secondary cell list and / or a correspondence between a candidate primary and secondary cell list; the UE context information at least includes UE identification information, and the UE identification information includes at least one of the following information: an identification of the UE in the primary cell of the first network side node, an identification of the UE in the secondary cell of the first network side node, an identification of the UE in the primary cell of the second network side node, and an identification of the UE in the secondary cell of the second network side node; the first network side node and the second network side node are mobility parameter configuration optimization related nodes.

[0068] Furthermore, the operations performed also include:

[0069] The second network side node sends an enhanced information element MobilityInformation IE to the first network side node;

[0070] The second network side node receives the enhanced information element Mobility Information IE sent by the first network side node;

[0071] The second network side node performs optimization based on the enhanced information element Mobility Information IE.

[0072] According to a fifth aspect of the present invention, there is provided a device for processing mobility failure, which is applied to a first network side node, and the device includes:

[0073] An information acquisition module, used by the first network side node to acquire first failure information and / or UE context information;

[0074] A failure analysis module, configured to perform mobility failure analysis based on the first failure information and / or UE context information;

[0075] Among them, the first failure information includes a candidate primary cell list, a candidate secondary cell list and / or a correspondence between a candidate primary and secondary cell list; the UE context information includes at least UE identification information, and the UE identification information includes at least one of the following information: an identification of the UE in the primary cell of the first network side node, an identification of the UE in the secondary cell of the first network side node, an identification of the UE in the primary cell of the second network side node, and an identification of the UE in the secondary cell of the second network side node; the first network side node and the second network side node are mobility parameter configuration optimization related nodes.

[0076] According to a sixth aspect of the present invention, there is provided a device for processing mobility failure, which is applied to a second network side node, and the device includes:

[0077] An information sending module, configured for the second network side node to send first failure information and / or UE context information to the first network side node;

[0078] An information receiving module, used for the second network side node to receive second failure information and / or UE context information sent by the first network side node;

[0079] An optimization module, configured for the second network side node to perform optimization based on the second failure information and / or UE context information;

[0080] Among them, the second failure information includes the first failure information; the first failure information and / or UE context information is obtained by the first network side node and used by the first network side node to perform mobility failure analysis; the UE context information at least includes UE identification information, and the UE identification information includes at least one of the following information: the identification of the UE in the primary cell of the first network side node, the identification of the UE in the secondary cell of the first network side node, the identification of the UE in the primary cell of the second network side node, and the identification of the UE in the secondary cell of the second network side node; the first failure information includes the correspondence between the candidate primary cell list, the candidate secondary cell list and / or the candidate primary and secondary cell list; the first network side node and the second network side node are mobility parameter configuration optimization related nodes.

[0081] According to a seventh aspect of the present invention, there is provided a processor-readable storage medium storing a program for causing the processor to execute the method described in the first and second aspects of the present application.

[0082] In summary, the embodiments of the present invention provide a method, device and processor-readable storage medium for processing mobility failure, the method comprising: a first network side node obtains first failure information and / or user equipment UE context information; and performs mobility failure analysis based on the first failure information and / or UE context information. The technical solution provided by the embodiments of the present invention provides a method for saving user context information and transmitting failure information on the network side, limits the primary cell failure information and the corresponding secondary cell failure information involved in the failure information, and can support the network side to achieve the goal of parameter configuration optimization in the CHO+candidate SCG scenario, thereby improving mobility-related indicators. BRIEF DESCRIPTION OF THE DRAWINGS

[0083] Figure 1 It is a schematic diagram of the MR-DC control plane architecture connected to 5GC;

[0084] Figure 2 It is a schematic diagram of UE exchanging data with MCG and SCG simultaneously;

[0085] Figure 3 is a flow chart of a method for processing mobility failure provided by an embodiment of the present invention;

[0086] Figure 4 is a flow chart of a method for processing mobility failure provided by another embodiment of the present invention;

[0087] Figure 5 is a structural diagram of a device for processing mobility failure provided by an embodiment of the present invention;

[0088] Figure 6 is a structural diagram of a device for processing mobility failure provided by another embodiment of the present invention;

[0089] Figure 7 is a structural diagram of a device for processing mobility failure provided by another embodiment of the present invention;

[0090] Figure 8 It is a structural diagram of a device for processing mobility failure provided by another embodiment of the present invention. DETAILED DESCRIPTION

[0091] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0092] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in one or more embodiments of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0093] 3GPP R18 version supports CHO+candidate SCG feature. CHO+candidate refers to the process of selecting the best candidate cell as the handover target according to the measurement results during wireless communication and initiating random access to the candidate cell. The current version only supports mobility parameter optimization of traditional handover and CHO. In order to support parameter optimization of the newly added mobility scenario, some failure information related to the scenario needs to be recorded.

[0094] (1) Multi-Radio Dual Connectivity (MR-DC) Network Architecture

[0095] In a multi-connection architecture, a user equipment (User Equipment, hereinafter referred to as "UE") may be connected to a master node (Master Node, hereinafter referred to as "MN"), and to one or more secondary nodes (Secondary Node, hereinafter referred to as "SN"), and perform signaling and / or data interaction with these network nodes. Both MN and SN nodes can be Long-Term Evolution (Long-Term Evolution, hereinafter referred to as "LET") / Evolved Long-Term Evolution (Evolved Long-Term Evolution, hereinafter referred to as "e-LTE") and New Radio (New Radio, hereinafter referred to as "NR") nodes. When there is one MN node and one SN node, it can be called dual connection (Dual connection, hereinafter referred to as "DC").

[0096] When the UE is in a connected state, it can be connected to one or more network-side nodes, and the network-side nodes can be in one or more radio access technologies (Radio Access Technology, hereinafter referred to as "RAT"). For example, when the MN is an LTE node and the SN is an NR node, it is (NG)EN-DC; when the MN is an NR node and the SN is an LTE node, it is NE-DC; when both the MN and the SN are NR nodes, it is NR-NR-DC. Figure 1 The figure shows a schematic diagram of the MR-DC control plane architecture connected to 5GC, wherein the UE is connected to the MN node and the SN node respectively through the user plane interface Uu, the MN node and the SN node are connected to each other through the control plane interface Xn-C, and the MN node is connected to the core network through the control plane interface NG-C.

[0097] (2) R18 mobility enhancement

[0098] The overall idea of ​​CHO conditional synchronous reconfiguration is that the network side sends a synchronous reconfiguration command to the terminal in advance. After receiving the conditional synchronous reconfiguration command, the terminal does not immediately initiate the synchronous reconfiguration process in the synchronous reconfiguration target cell like the traditional synchronous reconfiguration process, but first saves the configuration in the synchronous reconfiguration command. The synchronous reconfiguration process is not initiated in the target cell until the conditions configured in the synchronous reconfiguration command are met. A conditional synchronous reconfiguration command allows the configuration of the synchronous reconfiguration configuration of one or more target cells.

[0099] Considering the desire to select a suitable PSCell for access as much as possible when CHO is executed, the R18 NR mobility project discussed CHO+candidate SCG, that is, when configuring the CHO configuration, multiple candidate primary secondary cells (hereinafter referred to as "PSCell") configurations can be configured for each candidate primary cell (Primary Cell, hereinafter referred to as "PCell") . In the case where a candidate PCell configuration is associated with multiple candidate PSCell configurations, the network can provide multiple CHO configurations for this candidate PCell, and each CHO configuration corresponds to a different candidate SCG configuration. The network reconfigures the execution conditions of the associated PCell and the execution conditions of the associated PSCell for each condition. Only when the PCell and PSCell execution conditions are met at the same time, the UE executes the CHO+candidate SCG configuration and accesses the candidate target PCell and candidate target PSCell. Otherwise, the UE does not execute CHO+candidate SCG and continues to evaluate.

[0100] (3) Existing Switching MRO

[0101] MRO is used to solve the failure problem in the terminal mobility process and assist network optimization. When a handover failure or radio link failure (RLF) occurs, the terminal generates an RLF report. After the network side obtains the RLF report, it combines the information maintained by the network side to analyze the handover failure and optimize the handover configuration parameters to improve the handover success rate.

[0102] (4) Air Interface SCG Failure Information Message

[0103] RLF is divided into two types: Master Cell Group (MCG) MCG and Secondary Cell Group (SCG). If a radio link failure occurs in the MCG, the UE triggers the resource block group radio resource control (RRC) connection re-establishment process. If a failure occurs in the SCG, the UE sends an SCG failure information message to the MN node. The purpose of this message is to notify the MN node about the radio link failure, synchronization reconfiguration failure, SCG configuration failure and SCG integrity check failure on the signaling bearer (SRB3) of the UE at the SN node. The content of this message mainly includes the ID of the PSCell cell where the failure occurs, the ID of the source PSCell cell where the PSCell cell change occurs, the length of time from the occurrence of the PSCell cell change to the SCG failure, and the random access related information, SCG failure type, and UE measurement results when random access fails.

[0104] (5) Air Interface MCG Failure Information Message

[0105] In MR-DC, a UE can interact with MCG and SCG at the same time. Figure 2 The diagram shows a UE interacting with MCG and SCG at the same time. When a radio link failure occurs in the MCG on one side, resulting in disconnection, the UE should start the T316 timer and report the MCG Failure Information message to the network side. The message includes the failure type and related measurement result information, notifying the network that the MCG connection is disconnected and waiting for the network decision. Currently, the UE will only send the MCG Failure Information message when the radio link fails.

[0106] The MRO solution is mainly divided into a terminal side solution and a network side solution, that is, the network side and the terminal side save the necessary information for the handover failure analysis. Since the terminal side solution needs to occupy the terminal and air interface resources and has a large overhead, it is necessary to adopt the network side solution. The embodiment of the present invention provides an implementation method for saving and transmitting the relevant information of the handover failure and SCG failure on the network side in different failure scenarios in the CHO+candidate SCG scenario, that is, transmitting the relevant information of the handover failure and SCG failure between the relevant nodes of the handover, and after waiting for the failure report reported by the UE, the information maintained by the network side and the report reported by the UE are combined to perform the mobility failure analysis, and the mobility parameter configuration optimization is completed according to the analysis results and the relevant network nodes are notified.

[0107] The technical solution of the present invention is described in detail below with reference to the accompanying drawings. An embodiment of the present invention provides a method for processing mobility failure, which is applied to a first network side node. Figure 3 The flowchart of the method is shown in FIG. 1 , and the method comprises the following steps:

[0108] S302: The first network side node obtains first failure information and / or UE context information.

[0109] S304: Perform mobility failure analysis based on the first failure information and / or UE context information.

[0110] The first failure information includes at least one of the following information: a list of candidate primary cells, a list of candidate secondary cells, and a correspondence between the lists of candidate primary and secondary cells. The UE context information includes UE identification information, and the UE identification information includes at least one of the following information: an identification of the UE in the primary cell of the first network side node, an identification of the UE in the secondary cell of the first network side node, an identification of the UE in the primary cell of the second network side node, and an identification of the UE in the secondary cell of the second network side node.

[0111] The method for processing mobility failure provided by the embodiment of the present invention realizes the storage and transmission of relevant failure information including primary cell failure information and corresponding secondary cell failure information and UE context information involving relevant primary cells and secondary cells at the network side node, which can support the network side to complete the goal of parameter configuration optimization in the CHO+candidate SCG scenario and improve mobility-related indicators.

[0112] According to some optional embodiments, the first failure information may also include at least one of an RLF report, an SCG Failure Information message, and an MCG Failure Information message. The RLF report, the SCG Failure Information message, and the MCG Failure Information message are obtained from the UE. Based on different switching scenarios and analysis requirements, the first network side node also needs to obtain at least one of a candidate primary cell list, a candidate secondary cell list, and a correspondence between the candidate primary and secondary cell lists to perform mobility failure analysis.

[0113] According to some optional embodiments, in the candidate secondary cell list, corresponding to each candidate secondary cell, at least one of the following information is included: cell identification information, trigger condition information, and primary cell candidate cell identification information corresponding to the secondary cell. In the candidate secondary cell list, each candidate secondary cell also corresponds to at least one of the cell identification information, trigger condition information, and primary cell candidate cell identification information corresponding to the secondary cell. The trigger condition information may be, for example, measurement information, that is, if the corresponding measurement trigger condition is met, a candidate secondary cell may be selected as a target cell.

[0114] According to certain optional embodiments, in the candidate primary cell list, for each primary cell, a candidate secondary cell list corresponding to the primary cell is included, and for each candidate secondary cell in the candidate secondary cell list, at least one of the following information is included: cell identification information and trigger condition information. The candidate secondary cell list information involved in the above embodiments may also be in the candidate primary cell list to imply an identification correspondence, that is, in the candidate primary cell list, for each primary cell, there is a candidate secondary cell list corresponding to the primary cell; in the candidate secondary cell list, each candidate secondary cell also corresponds to at least one of the cell identification information and the trigger condition information.

[0115] The technical solution of the above embodiment adds corresponding cell identification information, trigger condition information and other related information to the candidate primary cell list and the candidate secondary cell list, which helps to support the network side node to achieve better mobility failure analysis and optimization.

[0116] According to some optional embodiments, the UE context information may also include measurement configuration information, radio resource configuration information, and other possibly related information.

[0117] According to some optional embodiments, the method may further include the steps of:

[0118] The first network side node sends the second failure information and / or UE context information to the second network side node, and the second failure information and / or UE context information is used for the second network side node to perform optimization.

[0119] The second failure information includes the first failure information. The second failure information may also include at least one of the following information: cell identification information, best primary cell for switching, best secondary cell identification information, and failure type indication information. The second failure information is used for optimizing the second network side node. The technical solution of this embodiment of the present invention can transmit failure information between network side nodes based on different switching scenarios and analysis requirements, so that the network side nodes are optimized based on the failure information.

[0120] According to some optional embodiments, the method may further include the steps of:

[0121] The first network side node receives the enhanced information element MobilityInformation IE sent by the second network side node; the first network side node sends the Mobility Information IE to the second network side node, and the Mobility Information IE is used for the second network side node to optimize. The Mobility Information extended IE is actually a bit string, and the information that can be used to record and transmit depends on the implementation of the network side node. The second network side node sends the Mobility Information IE to the first network side node during the switching trigger phase, and then when performing network parameter analysis and optimization, the first network side node sends the second failure information and / or UE context information to the second network side node while sending the Mobility Information IE to the second network side node, that is, the first network side node returns it to the second network side node, assisting the second network side node to optimize the parameters, and actually realizes the function of the node where the first network side node is located to temporarily store instead of the second network side node. The specific content saved can be determined based on the implementation, and there is no restriction here.

[0122] The embodiment of the present invention further provides a method for processing mobility failure, which is applied to a second network side node. Figure 4 The flowchart of the method is shown in FIG. 1 , and the method comprises the following steps:

[0123] S402. The second network side node sends first failure information and / or UE context information to the first network side node.

[0124] S404: The second network side node receives the second failure information and / or UE context information sent by the first network side node. The second failure information includes the first failure information

[0125] S406. The second network side node performs optimization based on the second failure information and / or UE context information.

[0126] According to some optional embodiments, the method further comprises the steps of:

[0127] The second network side node sends an enhanced information element Mobility Information IE to the first network side node; the second network side node receives the enhanced information element Mobility Information IE sent by the first network side node; the second network side node performs optimization based on the enhanced information element Mobility Information IE.

[0128] The technical solution of the above embodiment is described below with specific embodiments.

[0129] Embodiment 1: In a scenario where PCell1+PSCellA switches to PCell2+PSCellB, the switch fails soon after it succeeds.

[0130] In the first embodiment, PCell1 is located at the second network side node, and a dual-connection MR-DC is established. The auxiliary node cell is PSCellA. The UE switches to PCell2, which is located at the first network side node. At the same time, the auxiliary node cell is also changed to PSCellB. After the UE successfully switches, the following scenarios may occur:

[0131] 1) A radio link failure occurs on PCell2;

[0132] 2) The transformation from PSCellA to PSCellB fails;

[0133] 3) The transformation from PSCellA to PSCellB fails soon after success;

[0134] For scenario 1), the UE will generate an RLF report, which will be obtained by the first network node and sent to the PCell2 cell. For scenarios 2) and 3), the UE may send an SCG failure Information message to PCell2 located at the first network node (if PCell2 is available at this time), or may trigger RRC connection re-establishment to generate an RLF report.

[0135] Scenario 1) and scenario 2) may both occur, or any one of them may occur first. Scenario 1) and scenario 3) may both occur, or any one of them may occur first. If scenario 2) or scenario 3) fails first, and scenario 1) has not failed, the UE may send an SCG failure Information message to PCell2. After scenario 1) fails again, the UE will generate an RLF report. If scenario 1) occurs first, the UE may generate an RLF report or send an MCG failure information message through PSCellB. If scenario 2) and scenario 3) fail again, the UE needs to record the SCG failure related information in the RLF report.

[0136] After receiving the RLF report or SCG failure Information message, PCell2 of the first network side node will analyze the cause of failure. The failure cause analysis requires the candidate cell list information of the second network side node PCell and PSCell. Currently, PCell1 only sends the PCell candidate cell list information of CHO to PCell2. It is necessary to increase the candidate cell list information of PSCell and / or the correspondence between the PCell candidate cell list.

[0137] The candidate cell list information of the PSCell includes at least one node, and the node includes at least one of the following information: cell identification information, trigger condition information, and PCell candidate cell identification information corresponding to the PSCell cell, wherein the trigger condition information may specifically be measurement information, that is, if the corresponding measurement trigger condition is met, the PSCell can be selected as the target cell.

[0138] The PSCell candidate cell list information can also be added to the PCell candidate cell list to implicitly identify the corresponding relationship. Specifically, the PSCell candidate cell list information is added to each node of the current PCell candidate cell list. Each node in the PSCell candidate cell list contains at least one of the following information: cell identification information and trigger condition information, where the trigger condition information can specifically be measurement information, that is, if the corresponding measurement trigger condition is met, the PSCell can be selected as the target cell.

[0139] The above information is sent from PCell1 to PCell2, and messages need to be sent between nodes, involving the XN interface. Currently, the XN interface message SN state transfer (STATUS TRANSFER) message is used to transmit the PCell candidate cell list information of CHO, and the message can be used to transmit the above PSCell related information, or other messages or new messages can be used.

[0140] The first network-side node may determine the cause of the failure according to the above-mentioned correspondence between the PCell candidate cell list information and / or the PSCell candidate cell list information and / or the PCell candidate cell list, which may be:

[0141] Whether the PCell2 selected for handover is the best handover target cell. If not, the selection of the handover target cell needs to be optimized;

[0142] Whether the best target cell for handover is included in the PCell candidate cell list. If not, the PCell candidate cell list needs to be optimized.

[0143] If the best target cell for handover is included in the PCell candidate cell list, whether the conditions for triggering handover are appropriate;

[0144] Whether PSCellB corresponding to PCell2 is the best secondary cell. If not, the selection of the target cell for PSCell transformation needs to be optimized;

[0145] Whether the best target cell for PSCell transformation is included in the PSCell candidate cell list. If not, the PSCell candidate cell list needs to be optimized.

[0146] If the best target cell for PSCell transformation is included in the PSCell candidate cell list, whether the conditions for triggering transformation are suitable;

[0147] If the best target cell for PSCell transformation is included in the PSCell candidate cell list, whether the primary cell corresponding to the PSCell is the best cell for handover selection;

[0148] The above possible parameter optimization may require the first network node PCell2 to perform optimization, or may require PSCell B to perform optimization. If PSCellB is required to perform optimization, PCell2 needs to send an interface message to notify PSCellB to perform optimization.

[0149] After analyzing PCell2 of the first network side node, if it is considered that PCell1 of the second network side node needs parameter configuration optimization, it is also necessary to send a HANDOVER REPORT message to the node where PCell1 is located to notify PCell1 to perform optimization. The current HANDOVER REPORT message only contains CHO-related candidate cell information, and the above information also needs to be added, that is, the correspondence between the candidate cell list information of the PSCell and / or the candidate cell list of the PCell. The above information can be added to the XN interface message HANDOVER REPORT, or other existing messages, or new messages, and sent by the first network side node where the PCell2 cell is located to the second network side node where the PCell1 cell is located.

[0150] The above-mentioned transmission of PCell candidate cell list information and / or PSCell candidate cell list information and / or the correspondence between PCell and PSCell candidate cell lists between network side nodes where PCell1 and PCell2 are located. It is also possible to adopt the method of enhancing Mobility Information IE. The current Mobility Information IE is included in the XN interface message HANDOVER REQUEST, SN STATUS TRANSFER and HANDOVER REPORT message. The MobilityInformation IE structure is a 32-bit bit string. Due to its small length, it can only record some auxiliary information. It is possible to consider extending the length of Mobility Information IE, and use this IE to record PCell candidate cell list information and / or PSCell candidate cell list information and / or the correspondence between PCell and PSCell candidate cell lists. The specific method is to add a new IE, for example: Mobility Information extended IE, the name is not limited, and the main function is to extend the length of the original Mobility Information IE. Therefore, the extended Mobility Information can be used in the HANDOVER REQUESTSN and / or STATUS TRANSFER to transfer the PCell candidate cell list information and / or the PSCell candidate cell list information and / or the correspondence between the PCell and PSCell candidate cell lists from the node where the PCell1 cell is located to the node where the PCell2 cell is located. In the HANDOVER REPORT message, the PCell candidate cell list information and / or the PSCell candidate cell list information and / or the correspondence between the PCell and PSCell candidate cell lists are transferred from the node where the PCell2 cell is located to the node where the PCell1 cell is located.

[0151] UE context information can also be transmitted between the network side nodes where PCell1 and PCell2 are located. The UE context information includes at least UE identification information, such as at least one of the UE identification in PCell1, the UE identification in PSCellA, the UE identification in PCell2, and the UE identification in PSCellB; the UE context information can also include measurement configuration information, wireless resource configuration information, and other related information.

[0152] The existing HANDOVER REQUEST message is only used to transmit RLF report information, but in the above scenario analysis: if scenario 2) or scenario 3) fails first, and scenario 1) has not failed yet, the UE may send an SCG failureInformation message to PCell2. If scenario 1) occurs first, the UE can generate an RLF report or send an MCG failure information message through PSCellB. Since the UE's mobility is triggered by PCell1, PCell1 may still need to be optimized in the end, so the SCG failure Information message and the MCG failure information message need to be sent to PCell1. The current HANDOVER REPORT message can be extended to transmit the SCG failure Information message and the MCG failure information message, or other existing messages or new messages can be used for transmission, and there is no restriction here.

[0153] Example 2: PCell1+PSCellA switching to PCell2+PSCellB scenario, switching fails

[0154] In the second embodiment, PCell1 is located at the first network side node, the UE establishes MR-DC, and the secondary cell accessed is PSCellA. The UE switches from PCell1 to PCell2, and PSCellA also triggers the transition to PSCellB. PCell2 is located at the second network side node, the UE's PCell switching fails, and the following scenarios may occur in PSCell:

[0155] 1) PSCellA is transformed to PSCellB successfully;

[0156] 2) The transformation from PSCellA to PSCellB fails;

[0157] 3) The transformation from PSCellA to PSCellB fails soon after success;

[0158] For scenarios 1) and 3), the UE may send an MCG failure Information message to PSCell B. For scenario 2), the UE will generate an RLF report and send it to the first network-side node where PCell1 is located after network acquisition.

[0159] After receiving the RLF report and / or the MCG failure Information message, PCell1 located at the first network side node analyzes that the cause of the failure may be caused by PCell2 and / or PSCellB. The specific reasons may be:

[0160] 1) The best PCell to be selected for handover is in the candidate cell list selected by PCell1, but not in the candidate cell list selected by PCell2;

[0161] 2) The best PSCell that should be selected for PSCell transformation is in the candidate cell list selected by PCell1, but not in the candidate cell list selected by PSCellB;

[0162] 3) The best PCell and PSCell cell combination that should be selected for handover and PSCell change is in the candidate cell list selected by PCell1, but not in the candidate cell list selected by PCell2 and PSCellB.

[0163] The failure caused by the above reasons requires the PCell2 and / or PSCellB of the second network side node to perform parameter optimization, so the PCell1 of the first network side node needs to send the second failure information to notify the PCell2 of the second network side node, which can be done through the existing HANDOVER REPORT message, or other existing messages or new messages can be used without limitation. The second failure information includes at least one of the following:

[0164] 1) UE identification information, which may include the UE identification in PCell 1 and / or the UE identification in PSCell A and / or the UE identification in PCell 2 and / or the UE identification in PSCell B;

[0165] 2) Cell identification information, identification of PCell 1 and / or PCell 2 and / or PSCell A and / or PSCell B cells.

[0166] 3) Correspondence between PCell candidate cell list information and / or PSCell candidate cell list information and / or PCell candidate cell list;

[0167] 4) Switch the best PCell and / or best PSCell cell identifier. The best PCell to be switched may be the cell reestablished after the handover failure, the cell re-accessed, or the cell selected by PCell1. The best PSCell cell may be the cell selected by PCell1. When the best PCell and the best PSCell cell are provided together, the corresponding relationship between the PCell and PSCell cells may also be implicitly or explicitly indicated.

[0168] 5) RLF report;

[0169] 6) SCG failure Information or MCG failure Information message content;

[0170] 7) Failure type indication, specifically indicating the reasons for the failure of 1), 2), and 3) above.

[0171] 8) Mobility Information cellular and Mobility Information extension.

[0172] Example 3: PCell1+PSCellA switches to PCell2+PSCellB, and the switch is successful

[0173] In the third embodiment, PCell1 is located at the second network side node, and PCell2 is located at the first network side node. After the UE is successfully switched, the following scenarios may occur:

[0174] 1) The transformation from PSCellA to PSCellB fails;

[0175] 2) The transformation from PSCellA to PSCellB fails soon after it succeeds.

[0176] For scenarios 1) and 2), if PCell2 of the first network side node can be used at this time, the UE will send an SCGfailure Information message to PCell2 of the first network side node, and the first network side node will perform analysis using the analysis and processing method in Example 1. If PCell2 of the first network side node cannot be used, the RRC connection re-establishment process will be triggered to generate an RLF report, and the report will be sent to the second network side node where PCell1 is located after the network is acquired, and the second network side node will perform analysis using the analysis and processing method in Example 2.

[0177] An embodiment of the present invention further provides a device for processing mobility failure, which is applied to a first network side node. Figure 5 The structural diagram of the device is shown in FIG. Figure 5 As shown, it includes a memory 5120, a transceiver 5110 and a processor 5100:

[0178] A memory 5120, used for storing computer programs;

[0179] A transceiver 5110, configured to send and receive data under the control of the processor;

[0180] The processor 5100 is configured to read the computer program in the memory and perform the following operations:

[0181] The first network side node obtains first failure information and / or UE context information;

[0182] performing mobility failure analysis based on the first failure information and / or UE context information;

[0183] The first failure information includes at least one of the following information: a list of candidate primary cells, a list of candidate secondary cells, and a correspondence between the lists of candidate primary and secondary cells. The UE context information includes UE identification information, and the UE identification information includes at least one of the following information: an identification of the UE in the primary cell of the first network side node, an identification of the UE in the secondary cell of the first network side node, an identification of the UE in the primary cell of the second network side node, and an identification of the UE in the secondary cell of the second network side node.

[0184] The mobility failure processing device provided in the embodiment of the present invention realizes the storage and transmission of relevant failure information including primary cell failure information and corresponding secondary cell failure information and UE context information involving relevant primary cells and secondary cells at the network side node, which can support the network side to complete the goal of parameter configuration optimization in the CHO+candidate SCG scenario and improve mobility-related indicators.

[0185] According to some optional embodiments, the first failure information may also include at least one of an RLF report, an SCG Failure Information message, and an MCG Failure Information message. The RLF report, the SCG Failure Information message, and the MCG Failure Information message are obtained from the UE. Based on different switching scenarios and analysis requirements, the first network side node also needs to obtain at least one of a candidate primary cell list, a candidate secondary cell list, and a correspondence between the candidate primary and secondary cell lists to perform mobility failure analysis.

[0186] According to some optional embodiments, in the candidate secondary cell list, corresponding to each candidate secondary cell, at least one of the following information is included: cell identification information, trigger condition information, and primary cell candidate cell identification information corresponding to the secondary cell. In the candidate secondary cell list, each candidate secondary cell also corresponds to at least one of the cell identification information, trigger condition information, and primary cell candidate cell identification information corresponding to the secondary cell. The trigger condition information may be, for example, measurement information, that is, if the corresponding measurement trigger condition is met, a candidate secondary cell may be selected as a target cell.

[0187] According to certain optional embodiments, in the candidate primary cell list, for each primary cell, a candidate secondary cell list corresponding to the primary cell is included, and for each candidate secondary cell in the candidate secondary cell list, at least one of the following information is included: cell identification information and trigger condition information. The candidate secondary cell list information involved in the above embodiments may also be in the candidate primary cell list to imply an identification correspondence, that is, in the candidate primary cell list, for each primary cell, there is a candidate secondary cell list corresponding to the primary cell; in the candidate secondary cell list, each candidate secondary cell also corresponds to at least one of the cell identification information and the trigger condition information.

[0188] According to some optional embodiments, the UE context information may also include measurement configuration information, radio resource configuration information, and other possibly related information.

[0189] According to some optional embodiments, the operations performed may also include:

[0190] The first network side node sends the second failure information and / or UE context information to the second network side node, and the second failure information and / or UE context information is used for the second network side node to perform optimization.

[0191] The second failure information includes the first failure information. The second failure information may also include at least one of the following information: cell identification information, best primary cell for switching, best secondary cell identification information, and failure type indication information. The second failure information is used for optimizing the second network side node. The technical solution of this embodiment of the present invention can transmit failure information between network side nodes based on different switching scenarios and analysis requirements, so that the network side nodes are optimized based on the failure information.

[0192] According to some optional embodiments, the operations performed may also include:

[0193] The first network side node receives the enhanced information element MobilityInformation IE sent by the second network side node; the first network side node sends the Mobility Information IE to the second network side node, and the Mobility Information IE is used for optimization of the second network side node. The Mobility Information extended IE is actually a bit string, and the information that can be used to record and transmit depends on the implementation of the network side node. The second network side node sends the Mobility Information IE to the first network side node during the switching trigger phase, and then the second network side node returns it to the second network side node when performing network parameter analysis and optimization, to assist the second network side node in parameter optimization, which actually realizes the function of the node where the first network side node is located to temporarily store instead of the second network side node. The specific content saved can be determined based on the implementation, and there is no restriction here.

[0194] exist Figure 5 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 5100 and various circuits of the memory represented by the memory 5120 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 5110 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which may include a wireless channel, a wired channel, an optical cable, and other transmission media. The processor 5100 is responsible for managing the bus architecture and general processing, and the memory may store data used by the processor 5100 when performing operations. The processor 5100 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.

[0195] The embodiment of the present invention further provides a device for processing mobility failure, which is applied to a second network side node. Figure 6 The structural diagram of the device is shown in FIG. Figure 6 As shown, it includes a memory 6120, a transceiver 6110 and a processor 6100:

[0196] Memory 6120, used for storing computer programs;

[0197] A transceiver 6110, configured to send and receive data under the control of the processor;

[0198] The processor 6100 is configured to read the computer program in the memory and perform the following operations:

[0199] The second network side node sends first failure information and / or UE context information to the first network side node;

[0200] The second network side node receives the second failure information and / or UE context information sent by the first network side node;

[0201] The second network side node performs optimization based on the second failure information and / or UE context information;

[0202] Among them, the second failure information includes the first failure information; the first failure information and / or UE context information are obtained by the first network side node and used by the first network side node to perform mobility failure analysis; the first failure information includes the correspondence between the candidate main cell list, the candidate secondary cell list and / or the candidate main and secondary cell list; the UE context information at least includes UE identification information, and the UE identification information includes at least one of the following information: the identification of the UE in the main cell of the first network side node, the identification of the UE in the secondary cell of the first network side node, the identification of the UE in the main cell of the second network side node, and the identification of the UE in the secondary cell of the second network side node; the first network side node and the second network side node are nodes related to mobility parameter configuration optimization.

[0203] According to certain optional embodiments, the operations performed also include: the second network side node sends an enhanced information element Mobility Information IE to the first network side node; the second network side node receives the enhanced information element Mobility Information IE sent by the first network side node; and the second network side node optimizes based on the enhanced information element Mobility Information IE.

[0204] Among them, Figure 6In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 6100 and various circuits of the memory represented by the memory 6120 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 6110 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which may include a wireless channel, a wired channel, an optical cable, and other transmission media. The processor 6100 is responsible for managing the bus architecture and general processing, and the memory may store data used by the processor 5100 when performing operations. The processor 6100 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.

[0205] An embodiment of the present invention further provides a device for processing mobility failure, which is applied to a first network side node. Figure 7 The schematic diagram of the structure of the device is shown in FIG. Figure 7 As shown, the mobility failure processing device 7000 includes:

[0206] The information acquisition module 7100 is used for the first network side node to obtain the first failure information and / or UE context information.

[0207] The failure analysis module 7110 is configured to perform mobility failure analysis based on the first failure information and / or UE context information.

[0208] The first failure information includes at least one of the following information: a list of candidate primary cells, a list of candidate secondary cells, and a correspondence between the lists of candidate primary and secondary cells. The UE context information includes UE identification information, and the UE identification information includes at least one of the following information: an identification of the UE in the primary cell of the first network side node, an identification of the UE in the secondary cell of the first network side node, an identification of the UE in the primary cell of the second network side node, and an identification of the UE in the secondary cell of the second network side node.

[0209] The mobility failure processing device provided in the embodiment of the present invention realizes the storage and transmission of relevant failure information including primary cell failure information and corresponding secondary cell failure information and UE context information involving relevant primary cells and secondary cells at the network side node, which can support the network side to complete the goal of parameter configuration optimization in the CHO+candidate SCG scenario and improve mobility-related indicators.

[0210] According to some optional embodiments, the first failure information may also include at least one of an RLF report, an SCG Failure Information message, and an MCG Failure Information message. The RLF report, the SCG Failure Information message, and the MCG Failure Information message are obtained from the UE. Based on different switching scenarios and analysis requirements, the first network side node also needs to obtain at least one of a candidate primary cell list, a candidate secondary cell list, and a correspondence between the candidate primary and secondary cell lists to perform mobility failure analysis.

[0211] According to some optional embodiments, in the candidate secondary cell list, corresponding to each candidate secondary cell, at least one of the following information is included: cell identification information, trigger condition information, and primary cell candidate cell identification information corresponding to the secondary cell. In the candidate secondary cell list, each candidate secondary cell also corresponds to at least one of the cell identification information, trigger condition information, and primary cell candidate cell identification information corresponding to the secondary cell. The trigger condition information may be, for example, measurement information, that is, if the corresponding measurement trigger condition is met, a candidate secondary cell may be selected as a target cell.

[0212] According to certain optional embodiments, in the candidate primary cell list, for each primary cell, a candidate secondary cell list corresponding to the primary cell is included, and for each candidate secondary cell in the candidate secondary cell list, at least one of the following information is included: cell identification information and trigger condition information. The candidate secondary cell list information involved in the above embodiments may also be in the candidate primary cell list to imply an identification correspondence, that is, in the candidate primary cell list, for each primary cell, there is a candidate secondary cell list corresponding to the primary cell; in the candidate secondary cell list, each candidate secondary cell also corresponds to at least one of the cell identification information and the trigger condition information.

[0213] According to some optional embodiments, the UE context information may also include measurement configuration information, radio resource configuration information, and other possibly related information.

[0214] According to some optional embodiments, the device may further include:

[0215] The information sending module is used for the first network side node to send the second failure information and / or UE context information to the second network side node, and the second failure information and / or UE context information is used for the second network side node to perform optimization.

[0216] The second failure information includes the first failure information. The second failure information may also include at least one of the following information: cell identification information, best primary cell for switching, best secondary cell identification information, and failure type indication information. The second failure information is used for optimizing the second network side node. The technical solution of this embodiment of the present invention can transmit failure information between network side nodes based on different switching scenarios and analysis requirements, so that the network side nodes are optimized based on the failure information.

[0217] According to certain optional embodiments, the information acquisition module can also be used for the first network side node to receive the enhanced information element Mobility Information IE sent by the second network side node; the first network side node sends the Mobility Information IE to the second network side node through the information sending module, and the Mobility Information IE is used for the second network side node to optimize. The Mobility Information extended IE is actually a bit string, and the information that can be used to record and transmit depends on the implementation of the network side node. The second network side node sends the MobilityInformation IE to the first network side node during the switching trigger phase, and then returns it to the second network side node when performing network parameter analysis and optimization, to assist the second network side node in parameter optimization, which actually realizes the function of the node where the first network side node is located to temporarily store instead of the second network side node. The specific content saved can be determined based on the implementation, and there is no restriction here.

[0218] The embodiment of the present invention further provides a device for processing mobility failure, which is applied to a second network side node. Figure 8 The schematic diagram of the structure of the device is shown in FIG. Figure 8 As shown, the mobility failure processing device 8000 includes:

[0219] The information sending module 8100 is used for the second network side node to send the first failure information and / or UE context information to the first network side node.

[0220] The information receiving module 8110 is used for the second network side node to receive the second failure information and / or UE context information sent by the first network side node.

[0221] The optimization module 8120 is used for the second network side node to perform optimization based on the second failure information and / or UE context information.

[0222] Among them, the second failure information includes the first failure information; the first failure information and / or UE context information are obtained by the first network side node and used by the first network side node to perform mobility failure analysis; the first failure information includes the correspondence between the candidate main cell list, the candidate secondary cell list and / or the candidate main and secondary cell list; the UE context information at least includes UE identification information, and the UE identification information includes at least one of the following information: the identification of the UE in the main cell of the first network side node, the identification of the UE in the secondary cell of the first network side node, the identification of the UE in the main cell of the second network side node, and the identification of the UE in the secondary cell of the second network side node; the first network side node and the second network side node are nodes related to mobility parameter configuration optimization.

[0223] According to certain optional embodiments, the information sending module is also used for the second network side node to send an enhanced information element Mobility Information IE to the first network side node; the second network side node receives the enhanced information element Mobility Information IE sent by the first network side node through the information receiving module; and the second network side node performs optimization based on the enhanced information element Mobility Information IE through the optimization module.

[0224] An embodiment of the present invention further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a program, and the program is used to enable the processor to execute the method for handling mobility failure involved in the above-mentioned embodiment of the present invention. The processor-readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to magnetic storage (such as floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state drive (SSD)), etc.

[0225] In summary, the embodiments of the present invention relate to a method, device and processor-readable storage medium for processing mobility failure, the method comprising: a first network side node obtains first failure information and / or UE context information; and performs mobility failure analysis based on the first failure information and / or UE context information. The technical solution provided by the embodiments of the present invention provides a method for saving user context information and transmitting failure information at a network side node, limits the primary cell failure information and the corresponding secondary cell failure information involved in the failure information, and can support the network side to achieve the goal of parameter configuration optimization in the CHO+candidate SCG scenario, greatly improving mobility-related indicators.

[0226] It should be understood that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the present invention (including claims) is limited to these examples; under the idea of ​​the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other changes in different aspects of one or more embodiments of the present invention as described above, which are not provided in detail for the sake of simplicity. The above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the scope of protection of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A method for handling mobility failures, characterized in that, applied to a first network side node, the method includes: the first network side node obtains first failure information and / or user equipment (UE) context information; performs mobility failure analysis based on the first failure information and / or UE context information; wherein, the first failure information includes at least one of the following information: a candidate primary cell list, a candidate secondary cell list, and the corresponding relationship of the candidate primary and secondary cell list; the UE context information includes UE identification information, and the UE identification information includes at least one of the following information: the identification of the UE in the primary cell of the first network side node, the identification of the UE in the secondary cell of the first network side node, the identification of the UE in the primary cell of the second network side node, and the identification of the UE in the secondary cell of the second network side node; the first network side node and the second network side node are nodes related to the optimization of mobility parameter configuration.

2. The method according to claim 1, characterized in that, the method further includes: the first network side node sends second failure information and / or UE context information to the second network side node; the second failure information is used for the second network side node to perform optimization; wherein, the second failure information includes the first failure information.

3. The method according to claim 1 or 2, characterized in that, the first failure information further includes at least one of the following information: a radio link failure (RLF) report, secondary cell group failure information (SCG FailureInformation), and primary cell group failure information (MCG FailureInformation); the RLF report, SCG Failure Information, and MCG Failure Information are obtained from the UE.

4. The method according to claim 1, characterized in that, the UE context information further includes measurement configuration information and radio resource configuration information.

5. The method according to claim 2, characterized in that, the second failure information further includes at least one of the following information: cell identification information, handover best primary cell identification information, transform best secondary cell identification information, and failure type indication information.

6. The method according to claim 1, characterized in that, the method further includes: the first network side node receives an enhanced information element (MobilityInformation IE) sent by the second network side node; the first network side node sends the enhanced information element (Mobility Information IE) to the second network side node, and the enhanced information element (MobilityInformationIE) is used for the second network side node to perform optimization.

7. The method according to claim 1, characterized in that, in the candidate secondary cell list, for each candidate secondary cell, it includes at least one of the following information: cell identification information; trigger condition information; the candidate cell identification information of the primary cell corresponding to the secondary cell.

8. The method according to claim 1, It is characterized in that The candidate primary cell list includes, for each primary cell, a candidate secondary cell list corresponding to the primary cell, and each candidate secondary cell in the candidate secondary cell list includes at least one of the following information: Cell identification information; Trigger condition information.

9. A method for handling mobility failure, It is characterized in that Applied to the second network side node, the method includes: The second network side node sends first failure information and / or UE context information to the first network side node; The second network side node receives second failure information and / or UE context information sent by the first network side node; The second network side node performs optimization based on the second failure information and / or UE context information; Among them, the second failure information includes the first failure information; the first failure information and / or UE context information is obtained by the first network side node and used by the first network side node to perform mobility failure analysis; the first failure information includes a candidate primary cell list, a candidate secondary cell list and / or a correspondence between a candidate primary and secondary cell list; the UE context information at least includes UE identification information, and the UE identification information includes at least one of the following information: an identification of the UE in the primary cell of the first network side node, an identification of the UE in the secondary cell of the first network side node, an identification of the UE in the primary cell of the second network side node, and an identification of the UE in the secondary cell of the second network side node; the first network side node and the second network side node are mobility parameter configuration optimization related nodes.

10. The method according to claim 9, It is characterized in that The method further comprises: The second network side node sends an enhanced information element MobilityInformation IE to the first network side node; The second network side node receives the enhanced information element MobilityInformation IE sent by the first network side node; The second network side node performs optimization based on the enhanced information element Mobility Information IE.

11. A device for processing mobility failure, It is characterized in that Applied to the first network side node, including a memory, a transceiver and a processor: Memory for storing computer programs; a transceiver, for transmitting and receiving data under the control of the processor; A processor is configured to read the computer program in the memory and perform the following operations: The first network side node obtains first failure information and / or UE context information; performing mobility failure analysis based on the first failure information and / or UE context information; Among them, the first failure information includes a candidate primary cell list, a candidate secondary cell list and / or a correspondence between a candidate primary and secondary cell list; the UE context information includes at least UE identification information, and the UE identification information includes at least one of the following information: an identification of the UE in the primary cell of the first network side node, an identification of the UE in the secondary cell of the first network side node, an identification of the UE in the primary cell of the second network side node, and an identification of the UE in the secondary cell of the second network side node; the first network side node and the second network side node are mobility parameter configuration optimization related nodes.

12. The device according to claim 11, It is characterized in that The operations performed also include: The first network side node sends second failure information and / or UE context information to the second network side node; the second failure information is used for the second network side node to perform optimization; The second failure information includes the first failure information.

13. The device according to claim 11 or 12, It is characterized in that The first failure information further includes at least one of the following information: a radio link failure RLF report, a secondary cell group failure information SCG Failure Information, and a primary cell group failure information MCG Failure Information; The RLF report, SCG Failure Information and MCG Failure Information are obtained from the UE.

14. The device according to claim 11, It is characterized in that The UE context information also includes measurement configuration information and radio resource configuration information.

15. The device according to claim 12, It is characterized in that The second failure information further includes at least one of the following information: cell identification information, switching best primary cell identification information, changing best secondary cell identification information, and failure type indication information.

16. The device according to claim 11, It is characterized in that The operations performed also include: The first network side node receives an enhanced information element MobilityInformation IE sent by the second network side node; The first network side node sends the enhanced information element Mobility Information IE to the second network side node, and the enhanced information element Mobility Information IE is used for optimization of the second network side node.

17. The device according to claim 11, It is characterized in that The candidate secondary cell list includes at least one of the following information corresponding to each candidate secondary cell: Cell identification information; Trigger condition information; The primary cell candidate cell identification information corresponding to the secondary cell.

18. The method according to claim 11, It is characterized in that The candidate primary cell list includes, for each primary cell, a candidate secondary cell list corresponding to the primary cell, and each candidate secondary cell in the candidate secondary cell list includes at least one of the following information: Cell identification information; Trigger condition information.

19. A device for processing mobility failure, It is characterized in that Applied to the second network side node, including a memory, a transceiver and a processor: Memory for storing computer programs; a transceiver, for transmitting and receiving data under the control of the processor; A processor is configured to read the computer program in the memory and perform the following operations: The second network side node sends first failure information to the first network side node; The second network side node receives second failure information and / or UE context information sent by the first network side node; The second network side node performs optimization based on the second failure information and / or UE context information; The second failure information includes the first failure information; the first failure information and / or UE context information is acquired by the first network side node and used by the first network side node to perform mobility failure analysis; the first failure information includes a candidate primary cell list, a candidate secondary cell list and / or a correspondence between a candidate primary and secondary cell list; The UE context information includes at least UE identification information, and the UE identification information includes at least one of the following information: an identification of the UE in a primary cell of a first network side node, an identification of the UE in a secondary cell of the first network side node, an identification of the UE in a primary cell of a second network side node, and an identification of the UE in a secondary cell of a second network side node; the first network side node and the second network side node are nodes related to mobility parameter configuration optimization.

20. The device according to claim 19, It is characterized in that The operations performed also include: The second network side node sends an enhanced information element MobilityInformation IE to the first network side node; The second network side node receives the enhanced information element MobilityInformation IE sent by the first network side node; The second network side node performs optimization based on the enhanced information element Mobility Information IE.

21. A device for processing mobility failure, It is characterized in that Applied to a first network side node, the device includes: An information acquisition module, used by the first network side node to acquire first failure information and / or UE context information; A failure analysis module, configured to perform mobility failure analysis based on the first failure information and / or UE context information; Among them, the first failure information includes a candidate primary cell list, a candidate secondary cell list and / or a correspondence between a candidate primary and secondary cell list; the UE context information includes at least UE identification information, and the UE identification information includes at least one of the following information: an identification of the UE in the primary cell of the first network side node, an identification of the UE in the secondary cell of the first network side node, an identification of the UE in the primary cell of the second network side node, and an identification of the UE in the secondary cell of the second network side node; the first network side node and the second network side node are mobility parameter configuration optimization related nodes.

22. A device for processing mobility failure, It is characterized in that Applied to a second network side node, the apparatus comprises: An information sending module, configured to enable the second network side node to send first failure information and / or UE context information to a first network side node; An information receiving module, configured to enable the second network side node to receive second failure information and / or UE context information sent by the first network side node; An optimization module, configured to enable the second network side node to perform optimization based on the second failure information and / or UE context information; Wherein, the second failure information includes the first failure information; the first failure information and / or UE context information is obtained by the first network side node and used by the first network side node for mobility failure analysis; the UE context information at least includes UE identification information, and the UE identification information includes at least one of the following information: the identification of the UE in the primary cell of the first network side node, the identification of the UE in the secondary cell of the first network side node, the identification of the UE in the primary cell of the second network side node, and the identification of the UE in the secondary cell of the second network side node; the first failure information includes the correspondence relationship of the candidate primary cell list, the candidate secondary cell list and / or the candidate primary and secondary cell list; the first network side node and the second network side node are nodes related to mobility parameter configuration optimization.

23. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a program, and the program is used to cause the processor to execute the method according to any one of claims 1 to 10.

Images