Primary secondary cell addition or change processing method, nodes, device, system, and medium

Abstract

Provided in the present application are a primary secondary cell addition or change processing method, nodes, a device, a system, and a medium. The method may be applied to a first service node, wherein the first service node is connected to a user equipment, and the user equipment has a subsequent conditional primary secondary cell addition or change (SCPAC) configuration. The method comprises: receiving secondary cell group (SCG) failure information which is sent by a user equipment when an SCG failure occurs; on the basis of the SCG failure information, determining a service node associated with the SCG failure; and when the associated service node is not a first service node, sending the SCG failure information and SCPAC configuration information to the associated service node, wherein the SCPAC configuration information comprises a current subsequent candidate primary secondary cell list and execution conditions corresponding to primary secondary cells.

Description

Methods, nodes, equipment, systems, and media for processing changes or additions to primary and secondary cells Technical Field

[0001] The present application relates to the field of wireless communication technology, and for example, to a method, node, device, system, and medium for processing changes or additions of primary and secondary cells. Background Art

[0002] The subsequent conditional PSCell addition or change (SCPAC), whether SCPAC can be successfully executed depends mainly on whether the network side has correctly configured the candidate primary and secondary cells (PSCell) and the execution conditions. When the PSCell change or addition fails, the user equipment (UE) can report the secondary cell group (SCG) failure information to the master node (MN), such as reporting the source PSCell and target subsequent PSCell information. Based on the MN's timely acquisition of the SCG failure information, the node related to the SCG failure can optimize the configuration of the PScell ​​and the execution conditions for this SCG failure, wherein the node related to the SCG failure may be the MN or the secondary node (SN). However, in the case of SCG failure, the MN may not obtain the SCG failure information in time, and the node related to the SCG failure (MN or SN) may have deleted the UE's text. Therefore, it is impossible to determine whether the SCG failure is related to the configuration generated by itself, and it is also impossible to determine whether and how to optimize the PScell ​​and the configuration of the execution conditions, which affects the reliability of SCPAC and the network performance. Summary of the Invention

[0003] The present application provides a method, node, device, system and medium for processing changes or additions of primary and secondary cells.

[0004] The present invention provides a method for processing a change or addition of a primary or secondary cell, which is applied to a first serving node connected to a user equipment (UE). The UE has a subsequent conditional SCPAC configuration for changing or adding a primary or secondary cell. The method includes:

[0005] receiving SCG failure information sent by the user equipment when the secondary cell group (SCG) fails;

[0006] Determine the service node associated with the SCG failure according to the SCG failure information;

[0007] In a case where the associated serving node is not the first serving node, the SCG failure information and SCPAC configuration information are sent to the associated serving node, where the SCPAC configuration information includes a current subsequent candidate primary and secondary cell list and execution conditions corresponding to the primary and secondary cells.

[0008] An embodiment of the present application further provides a method for processing a change or addition of a primary or secondary cell, which is applied to a first serving node, wherein the user equipment has a subsequent conditional primary or secondary cell change or addition SCPAC configuration, and the first serving node is a serving node connected to the user equipment when an SCG fails; the method comprising:

[0009] receiving SCG failure enhancement information from a third service node, where the third service node is a service node to which the user equipment is connected after the connection with the first service node is released, the SCG failure enhancement information being sent by the user equipment to the third service node, the SCG failure enhancement information including SCPAC configuration information and an identifier of a primary cell connected to the user equipment when the SCG fails, the SCPAC configuration information including a current subsequent candidate primary and secondary cell list and execution conditions corresponding to the primary and secondary cells;

[0010] Determine the service node associated with the SCG failure according to the SCG failure enhancement information.

[0011] The embodiment of the present application further provides a method for processing a change or addition of a primary or secondary cell, which is applied to a second serving node, wherein the second serving node fails to associate with a secondary cell group (SCG) of a user, and the user equipment has a subsequent conditional primary or secondary cell change or addition SCPAC configuration; the method includes:

[0012] receiving SCG failure information and SCPAC configuration information sent by the first serving node, wherein the SCPAC configuration information includes a current subsequent candidate primary and secondary cell list and execution conditions corresponding to the primary and secondary cells;

[0013] The SCPAC configuration of the user equipment is updated according to the SCG failure information and the SCPAC configuration information, or the SCPAC configuration is optimized and the optimized SCPAC configuration information is saved, where the optimized SCPAC configuration information is used to configure the SCPAC of a subsequently connected UE.

[0014] An embodiment of the present application further provides a method for processing changes or additions of primary and secondary cells, which is applied to a third serving node, where the third serving node is a serving node to which a user equipment is connected after a connection with a first serving node is released, and the first serving node is a serving node to which the user equipment is connected when a secondary cell group (SCG) fails. The method comprises:

[0015] receiving SCG failure enhancement information sent by the user equipment, the SCG failure enhancement information including SCPAC configuration information and an identifier of a primary cell connected to the user equipment when the SCG fails, the SCPAC configuration information including a current subsequent candidate primary and secondary cell list and execution conditions corresponding to the primary and secondary cells;

[0016] Send the SCG failure enhancement information to the first serving node according to the identifier of the primary cell.

[0017] The embodiment of the present application further provides a method for processing a change or addition of a primary or secondary cell, which is applied to a user equipment and includes:

[0018] In the event of a secondary cell group (SCG) failure, SCG failure information is generated;

[0019] Sending SCG failure information and SCPAC configuration information to a first service node, where the first service node is the service node connected to the user equipment when the SCG fails, and the SCPAC configuration information includes a current subsequent candidate primary and secondary cell list and execution conditions corresponding to the primary and secondary cells.

[0020] The embodiment of the present application further provides a method for processing a change or addition of a primary or secondary cell, which is applied to a user equipment and includes:

[0021] Generate SCG failure enhancement information, the SCG failure enhancement information including SCPAC configuration information and an identifier of a primary cell connected to the user equipment when the SCG fails, the SCPAC configuration information including a current subsequent candidate primary and secondary cell list and execution conditions corresponding to the primary and secondary cells;

[0022] Sending SCG failure enhancement information to a third service node, the third service node being the service node to which the user equipment is connected after the connection with the first service node is released

[0023] The embodiment of the present application further provides a first service node, comprising: a memory, and one or more processors;

[0024] The memory is configured to store one or more programs;

[0025] When the one or more programs are executed by the one or more processors, the one or more processors implement the above-mentioned processing method for changing or adding a primary or secondary cell applied to the first serving node.

[0026] The embodiment of the present application further provides a second service node, comprising: a memory, and one or more processors;

[0027] The memory is configured to store one or more programs;

[0028] When the one or more programs are executed by the one or more processors, the one or more processors implement the above-mentioned processing method for changing or adding a primary or secondary cell applied to the second serving node.

[0029] The embodiment of the present application further provides a third service node, comprising: a memory, and one or more processors;

[0030] The memory is configured to store one or more programs;

[0031] When the one or more programs are executed by the one or more processors, the one or more processors implement the above-mentioned processing method for changing or adding a primary or secondary cell applied to the third serving node.

[0032] An embodiment of the present application further provides a user equipment, comprising: a memory, and one or more processors;

[0033] The memory is configured to store one or more programs;

[0034] When the one or more programs are executed by the one or more processors, the one or more processors implement the above-mentioned processing method for changing or adding primary and secondary cells applied to user equipment.

[0035] An embodiment of the present application further provides a communication system, including: the above-mentioned first service node, the second service node, and user equipment.

[0036] An embodiment of the present application further provides a communication system, including: the above-mentioned first service node, the third service node, and user equipment.

[0037] An embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, the above-mentioned processing method for changing or adding primary and secondary cells is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] FIG1 is a flowchart of a method for processing changes or additions of primary and secondary cells provided by an embodiment;

[0039] FIG2 is a flowchart of another method for processing changes or additions of primary and secondary cells provided by an embodiment;

[0040] FIG3 is a flowchart of another method for processing changes or additions of primary and secondary cells provided by an embodiment;

[0041] FIG4 is a flowchart of another method for processing changes or additions of primary and secondary cells provided by an embodiment;

[0042] FIG5 is a flowchart of another method for processing changes or additions of primary and secondary cells provided by an embodiment;

[0043] FIG6 is a flowchart of another method for processing changes or additions of primary and secondary cells provided by an embodiment;

[0044] FIG7 is a schematic diagram of a process for changing or adding a primary or secondary cell when a SCPAC PSCell is changed too late, provided by an embodiment;

[0045] FIG8 is a schematic diagram of a process for changing or adding a primary or secondary cell when a SCPAC PSCell is changed or added prematurely or incorrectly, according to an embodiment;

[0046] FIG9 is a schematic diagram of a process for changing or adding a primary or secondary cell when a UE is connected to a non-SCG failure-related serving node, provided by an embodiment;

[0047] FIG10 is a schematic diagram of the hardware structure of a service node provided by an embodiment;

[0048] FIG11 is a schematic diagram of the hardware structure of a user terminal provided by an embodiment;

[0049] FIG12 is a schematic structural diagram of a communication system provided by an embodiment;

[0050] FIG13 is a schematic structural diagram of another communication system provided by an embodiment. DETAILED DESCRIPTION

[0051] The present application is described below in conjunction with the accompanying drawings and embodiments. It will be understood that the specific embodiments described herein are merely intended to explain the present application and are not intended to limit the present application. It should be noted that, unless there is a conflict, the embodiments and features within the embodiments of the present application may be combined with each other in any manner. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present application, not all structures.

[0052] For high-speed data and low-latency applications, user services have very strict requirements for latency and reliability. To ensure basic user coverage, operators may deploy a large-scale dual connectivity (DC) architecture and configure high-frequency cells as secondary cells (SCells) to ensure basic user coverage due to the transmission characteristics of high-frequency millimeter waves.

[0053] In the Rel-17 version of the 3rd Generation Partnership Project (3GPP), the Conditional PSCell Change / Addition (CPAC) function, namely the Conditional PSCell Change (CPC) / Conditional PSCell Addition (CPA) function, is introduced for the addition and change of dual-connectivity Primary Secondary Cell (PSCell). The network side can pre-configure the CPAC configuration for the UE, that is, configure some candidate PSCells that can be used for addition or change, including the relevant resource configuration and radio bearer (RB) configuration of the candidate PSCells, as well as the measurement-related execution conditions of each candidate PSCell. The execution condition may refer to the configured UE signal quality measurement requirement for the PSCell cell. When the UE measures the corresponding PSCell cell signal quality that meets the requirement, it is considered that the execution condition for adding the PSCell or switching to the PSCell is met. Based on the CPAC configuration, the UE continuously evaluates the signal quality of each PSCell, specifically assessing whether the execution conditions for each PSCell are met. If a PSCell's execution conditions are met, the UE can directly switch from the source PSCell to that PSCell, or, if the UE does not already have a PSCell connection, directly add a connection to that PSCell. This eliminates the need for the network to evaluate the cell quality measurement results reported by the UE and initiate PSCell switching / addition. Instead, the UE directly executes PSCell switching / addition based on its own measurement results, eliminating the need for network-assisted switching and significantly reducing PSCell switching / addition latency.

[0054] However, in Rel-17, after a UE configured with CPAC completes the connection to the target PSCell, the CPAC configuration is no longer applicable to the target PSCell, and the UE needs to release the CPAC configuration. Therefore, unless the network side reconfigures a new subsequent CPAC candidate cell configuration to the UE, the UE can only trigger the PSCell change or addition by reporting the cell measurement quality during subsequent mobility. The network side reconfigures a new subsequent CPAC to the UE, or the network side directly triggers the PSCell change or addition based on the cell measurement reported by the UE. Both methods still increase the delay of PSCell switching / addition.

[0055] 3GPP Rel-18 introduced the Subsequent Conditional PSCell Addition or Change (SCPAC). The network pre-configures the SCPAC configuration for the UE. The SCPAC configuration includes: configuring some candidate PSCells that can be added or changed based on the current connection status, including the relevant resource configuration and RB configuration of the candidate PSCells, as well as the measurement-related execution conditions of each PSCell; and configuring the subsequent candidate PSCells for each PSCell, including the relevant resource configuration and RB configuration of the subsequent candidate PSCells, as well as the measurement-related execution conditions of each subsequent candidate PSCell. After the UE completes the connection to the target PSCell (Primary Secondary Cell), it does not need to release the SCPAC configuration. Instead, the UE evaluates the signal quality of each subsequent candidate PSCell according to the subsequent changed candidate PSCells configuration corresponding to the currently connected PSCell in the SCPAC configuration, that is, evaluates whether the execution conditions of a subsequent PSCell continue to exist. If so, the UE directly switches to the subsequent PSCell based on its own measurement results without the need for network-side assisted switching.

[0056] Whether SCPAC can be successfully executed depends mainly on whether the network side correctly selects the candidate PSCell and whether the corresponding candidate PSCell execution conditions are correctly configured.

[0057] In SCPAC initiated by the Rel-18 Master Node (MN), the MN provides recommended candidate Secondary Nodes (SNs) for the currently connected PScell ​​or when a PScell ​​is needed when none exists. For each candidate SN, the MN provides a list of recommended candidate PScells and also provides execution conditions for each candidate PScell. The candidate SN ultimately decides which candidate PScells to accept or reject and further determines the list of subsequent candidate PScells corresponding to that candidate PScell ​​and the execution conditions for each subsequent candidate PScell.

[0058] In Rel-18 SN-initiated SCPAC, the source SN recommends candidate SNs for the currently connected cell and PScell. For each candidate SN, it provides a list of recommended candidate PScells for the current PScell. The source SN also provides execution conditions for each candidate PScell. The candidate SN ultimately decides which candidate PScells to accept or reject, and for each accepted candidate PScell, it determines the corresponding list of subsequent candidate PScells and the execution conditions for the associated subsequent candidate PScells.

[0059] When a PSCell change or addition failure occurs, the UE reports secondary cell group (SCG) failure information to the MN, including source PSCell information and target subsequent PSCell information.

[0060] In order to further optimize the candidate PSCell configuration on the network side, the MN first determines whether the failure is related to itself. If so, the MN optimizes the PScell ​​configuration and the configuration of the execution conditions. If not, the MN can forward the SCG failure information to the SN related to the error. However, after the network side configures the SCPAC configuration for the UE, the SCG failure information currently reported by the UE does not include the SCPAC's subsequent candidate PSCell list for each possible connected PSCell, and the execution conditions of each subsequent candidate PSCell. Since the SCG failure occurred, the SN side may have deleted the UE's text. Therefore, when the SN receives the SCG failure information related to the UE forwarded by the MN, the SN cannot determine whether the SCG error is related to its own generated configuration, resulting in the inability to optimize network performance.

[0061] In addition, under normal circumstances, when SCG fails, the UE will usually immediately notify the network side of the SCG failure information. However, there may be some situations where the network side MN does not obtain the SCG failure information from the UE side in time, and then another service node (for example, the UE moves out of the MN's coverage) obtains the UE's SCG failure information. At this time, the service node has no way to know which MN node is at the time based on the SCG failure information, nor can it forward the SCG failure information to the corresponding MN node. The MN node may also delete the UE's text. In this case, the network side is unable to analyze and optimize the SCG failure.

[0062] The embodiment of the present application provides a method for processing changes or additions of primary and secondary cells. The UE can report SCG failure information and SCPAC configuration information to the service node (such as MN or other service node) connected to it, so that the MN or other service node can determine the service node associated with the SCG failure, and then the service node associated with the SCG failure can analyze and optimize the SCG failure according to the SCPAC configuration information, reduce the PSCell switching / increase delay, and improve the reliability and communication quality of SCPAC.

[0063] Figure 1 is a flowchart of a method for processing changes or additions to primary and secondary cells, provided by one embodiment. This method can be applied to a first serving node, which can be a mobile network (MN) or a network-side node connected to a UE when an SCG fails. In this embodiment, the UE is connected to the first serving node and has an SCPAC configuration.

[0064] As shown in FIG1 , the method provided in this embodiment includes:

[0065] Step 110: Receive SCG failure information sent by the user equipment when the secondary cell group SCG fails.

[0066] Step 120: Determine the service node associated with the SCG failure according to the SCG failure information.

[0067] Step 130: If the associated service node is not the first service node, send the SCG failure information and SCPAC configuration information to the associated service node, where the SCPAC configuration information includes a current subsequent candidate primary and secondary cell list and execution conditions corresponding to the primary and secondary cells.

[0068] In this embodiment, the UE may send SCG failure information to the first service node in the event of an SCG failure. The SCG failure information may include the time and type of the SCG failure and / or the identifier of the service node connected to the UE when the SCG fails, etc. The first service node may determine the service node associated with the SCG failure based on the SCG failure information, wherein the service node associated with the SCG failure may be understood as the service node connected to the UE when the SCG fails, or may be understood as the service node responsible for SCG failure analysis and optimization. On this basis, if the associated service node is the first service node, the first service node may perform SCG failure analysis and optimization based on the SCPAC configuration information in the current UE text; if the associated service node is not the first service node (the associated service node is recorded as the second service node), the SCG failure information and SCPAC configuration information may be sent to the associated service node, so that the associated service node can perform SCG failure analysis and optimization.

[0069] In one embodiment, the method further comprises:

[0070] Step 140: Determine a target subsequent primary and secondary cell, and send an identifier of the target subsequent primary and secondary cell to the associated serving node. The target subsequent primary and secondary cell can be understood as a suitable subsequent PSCell determined or recommended by the first serving node based on actual conditions (e.g., cell signal quality meets requirements). The target subsequent primary and secondary cell can serve as a basis for the associated serving node to analyze the type of SCG failure and optimize SCPAC configuration.

[0071] In one embodiment, when the associated service node is the first service node, the method further includes:

[0072] Step 1510: If the first condition is met, determine that the type of SCG failure is a late SCPAC primary / secondary cell change; the first condition includes: determining based on the SCG failure information that the source primary / secondary cell fails when SCPAC is not executed, and there is a target subsequent primary / secondary cell.

[0073] In one embodiment, when the associated service node is the first service node, the method further includes:

[0074] Step 1520: If the second condition is met, determine that the type of SCG failure is premature SCPAC primary / secondary cell change; the second condition includes: in a dual connectivity scenario, determine based on the SCG failure information that SCPAC has been executed, and the target subsequent primary / secondary cell is the source primary / secondary cell.

[0075] In one embodiment, when the associated service node is the first service node, the method further includes:

[0076] Step 1530: If the third condition is met, determine that the type of SCG failure is premature SCPAC primary and secondary cell addition; the third condition includes: in a single connection scenario, determine based on the SCG failure information that SCPAC has been executed and there is no target subsequent primary and secondary cell.

[0077] In one embodiment, when the associated service node is the first service node, the method further includes:

[0078] Step 1540: Determine that the type of SCG failure is an incorrect SCPAC primary / secondary cell change when the fourth condition is met; the fourth condition includes: in a dual-connection scenario, determine that SCPAC has been executed based on the SCG failure information, and the target subsequent primary / secondary cell is neither the source primary / secondary cell nor the primary / secondary cell of the SCG failure.

[0079] In one embodiment, when the associated service node is the first service node, the method further includes:

[0080] Step 1550: When the fifth condition is met, determine that the type of SCG failure is an error and add SCPAC primary and secondary cells; the fifth condition includes: in a single connection scenario, determine that SCPAC has been executed according to the SCG failure information, and the target subsequent primary and secondary cells are not the primary and secondary cells of the SCG failure.

[0081] In one embodiment, the apparatus further comprises:

[0082] Step 160: Update the SCPAC configuration of the user equipment according to the type of SCG failure and the SCPAC configuration information in the user equipment context, or optimize the SCPAC configuration and save the optimized SCPAC configuration information. The optimized SCPAC configuration information is used to configure the SCPAC of subsequently connected user terminals.

[0083] Figure 2 is a flow chart of a method for processing changes or additions to primary and secondary cells, provided in one embodiment. This method can be applied to a first serving node. In this embodiment, a UE is connected to a third serving node, the UE has an SCPAC configuration, the first serving node is the serving node to which the UE is connected when the SCG fails, and the third serving node is the serving node to which the UE is connected after the connection with the first serving node is released.

[0084] As shown in FIG2 , the method provided in this embodiment includes:

[0085] Step 210: Receive SCG failure enhancement information from the third service node.

[0086] Step 220: Determine the service node associated with the SCG failure according to the SCG failure enhancement information.

[0087] In this embodiment, the SCG failure enhancement information is sent by the UE to the third serving node. The SCG failure enhancement information includes SCPAC configuration information and an identifier of the primary cell (i.e., the first serving node) to which the UE is connected when the SCG fails. The SCPAC configuration information includes a list of current and subsequent candidate primary and secondary cells and execution conditions for the corresponding primary and secondary cells.

[0088] In this embodiment, the UE may send SCG failure enhancement information to the third service node in the event of an SCG failure. The SCG failure enhancement information may include SCPAC configuration information and an identifier of the primary cell (i.e., the first service node) to which the UE is connected when the SCG fails. The third service node sends the SCG failure enhancement information to the first service node based on the identifier, and the first service node determines the service node associated with the SCG failure based on the information. On this basis, if the associated service node is the first service node, the first service node may perform SCG failure analysis and optimization based on the SCG failure enhancement information; if the associated service node is not the first service node (the associated service node is recorded as the second service node), the SCG failure enhancement information may be sent to the associated service node, so that the associated service node can perform SCG failure analysis and optimization.

[0089] In one embodiment, the SCG failure enhanced information further includes an identifier of a target subsequent primary and secondary cell determined by the user equipment.

[0090] In one embodiment, when the associated service node is the first service node, the method further includes:

[0091] Step 230: Determine the type of SCG failure according to the SCG failure enhancement information;

[0092] Step 240: Update the SCPAC configuration of the user equipment according to the type of SCG failure and the SCPAC configuration information, or optimize the SCPAC configuration and save the optimized SCPAC configuration information. The optimized SCPAC configuration information is used to configure the SCPAC of subsequently connected user terminals.

[0093] In one embodiment, when the associated service node is not the first service node, the method further includes:

[0094] Step 250: Send SCG failure enhancement information and SCPAC configuration information to the associated service node. The SCPAC configuration information includes the current subsequent candidate primary and secondary cell list and the execution conditions of the corresponding primary and secondary cells.

[0095] Figure 3 is a flowchart of a method for processing a change or addition of a primary or secondary cell, provided by one embodiment. This method can be applied to a second serving node. The second serving node may be a node with a failed SCG association, and the UE currently has no connection to the second serving node. The UE has a subsequent conditional SCPAC configuration for changing or adding a primary or secondary cell.

[0096] As shown in FIG3 , the method provided in this embodiment includes:

[0097] Step 310: Receive SCG failure information and SCPAC configuration information sent by the first service node, where the SCPAC configuration information includes a current subsequent candidate primary and secondary cell list and execution conditions corresponding to the primary and secondary cells.

[0098] Step 320: Update the SCPAC configuration of the user equipment according to the SCG failure information and the SCPAC configuration information, or optimize the SCPAC configuration and save the optimized SCPAC configuration information, where the optimized SCPAC configuration information is used to configure the SCPAC of a subsequently connected user terminal.

[0099] In this embodiment, the UE is connected to the first service node. In the event of an SCG failure, the UE may send SCG failure information to the first service node. The SCG failure information may include the time and type of the SCG failure and / or the identifier of the service node connected to the UE when the SCG fails, etc. The first service node may determine that the service node associated with the SCG failure is the second service node based on the identifier, and send the SCG failure information and SCPAC configuration information to the second service node. The second service node may perform SCG failure analysis and optimization. The optimization may be understood as updating the SCPAC configuration of the UE, such as updating the current subsequent candidate primary and secondary cell list and the configuration information of the execution conditions of the corresponding primary and secondary cells. It may also be understood as optimizing the SCPAC configuration and saving the optimized SCPAC configuration information. The saved optimized SCPAC configuration information may be used to configure the SCPAC of the UE subsequently connected to the second service node.

[0100] In one embodiment, the method further comprises:

[0101] Step 330: Determine a target subsequent primary and secondary cell; or, receive an identifier of the target subsequent primary and secondary cell determined by the first serving node. In this embodiment, the second serving node may determine a suitable target subsequent primary and secondary cell, or the first serving node may determine a suitable target subsequent primary and secondary cell and send the identifier of the target subsequent primary and secondary cell to the second serving node. The second serving node may analyze the type of SCG failure or optimize the SCPAC configuration based on the suitable target subsequent primary and secondary cell.

[0102] In one embodiment, the method further comprises:

[0103] Step 3410: If the first condition is met, determine that the type of SCG failure is a late SCPAC primary and secondary cell change; the first condition includes: determining based on the SCG failure information that the source primary and secondary cells fail when SCPAC is not executed, and there are target subsequent primary and secondary cells.

[0104] In one embodiment, the method further comprises:

[0105] Step 3420: If the second condition is met, determine that the type of SCG failure is premature SCPAC primary / secondary cell change; the second condition includes: in a dual connectivity scenario, determine based on the SCG failure information that SCPAC has been executed, and the target subsequent primary / secondary cell is the source primary / secondary cell.

[0106] In one embodiment, the method further comprises:

[0107] Step 3430: Determine that the type of SCG failure is an incorrect SCPAC primary / secondary cell change when the fourth condition is met; the fourth condition includes: in a dual-connection scenario, determine that SCPAC has been executed based on the SCG failure information, and the target subsequent primary / secondary cell is neither the source primary / secondary cell nor the primary / secondary cell of the SCG failure.

[0108] Figure 4 is a flowchart of a processing method for changing or adding primary and secondary cells provided by an embodiment. The method can be applied to a third service node, where the third service node is the service node to which the UE is connected after the connection with the first service node is released, and the first service node is the service node to which the user equipment is connected when the SCG fails.

[0109] As shown in FIG4 , the method provided in this embodiment includes:

[0110] Step 410: Receive SCG failure enhancement information sent by the user equipment, where the SCG failure enhancement information includes SCPAC configuration information and an identifier of the primary cell connected to the user equipment when the SCG fails, and the SCPAC configuration information includes a current subsequent candidate primary and secondary cell list and execution conditions for the corresponding primary and secondary cells.

[0111] Step 420: Send the SCG failure enhancement information to the first serving node according to the identifier of the primary cell.

[0112] In this embodiment, the UE may send SCG failure enhancement information to the third service node in the event of SCG failure. The SCG failure enhancement information may include SCPAC configuration information and the identifier of the primary cell (i.e., the first service node) connected to the UE when the SCG fails. The third service node sends the SCG failure enhancement information to the first service node based on the identifier. The first service node may determine whether the service node associated with the SCG failure is this node, and then determine whether it is necessary to send the SCG failure enhancement information to the associated service node. On this basis, the associated service node may perform SCG failure analysis and optimization.

[0113] In one embodiment, the SCG failure enhancement information further includes an identifier of a target subsequent primary and secondary cell determined by the user equipment.

[0114] FIG5 is a flowchart of a method for processing a change or addition of a primary or secondary cell according to an embodiment, which can be applied to a UE. As shown in FIG5 , the method provided in this embodiment includes:

[0115] Step 510: In the event of SCG failure, generate SCG failure information.

[0116] Step 520: Send SCG failure information and SCPAC configuration information to the first serving node, where the SCPAC configuration information includes a current subsequent candidate primary and secondary cell list and execution conditions corresponding to the primary and secondary cells.

[0117] In this embodiment, the first service node is the service node connected to the UE when the SCG fails. In the event of an SCG failure, the UE may send SCG failure information to the first service node. The SCG failure information may include the time and type of the SCG failure and / or the identifier of the service node connected to the UE when the SCG fails. The first service node may determine the service node associated with the SCG failure based on the SCG failure information. On this basis, if the associated service node is the first service node, the first service node may perform SCG failure analysis and optimization based on the SCPAC configuration information; if the associated service node is not the first service node (the associated service node is recorded as the second service node), the SCG failure information and SCPAC configuration information may be sent to the associated service node, so that the associated service node can perform SCG failure analysis and optimization.

[0118] FIG6 is a flowchart of a method for processing a change or addition of a primary or secondary cell according to an embodiment, which can be applied to a UE. As shown in FIG6 , the method provided in this embodiment includes:

[0119] Step 610: Generate SCG failure enhancement information, which includes SCPAC configuration information and the identifier of the primary cell connected to the user equipment when the SCG fails. The SCPAC configuration information includes the current subsequent candidate primary and secondary cell list and execution conditions of the corresponding primary and secondary cells.

[0120] Step 620: Send SCG failure enhancement information to the third service node.

[0121] In this embodiment, the third service node is the service node to which the user equipment is connected after the connection with the first service node is released. In the event of an SCG failure, the UE may send SCG failure enhancement information to the third service node. The SCG failure enhancement information may include SCPAC configuration information and an identifier of the primary cell (i.e., the first service node) to which the UE is connected at the time of the SCG failure. The third service node sends the SCG failure enhancement information to the first service node based on the identifier, so that the first service node can decide whether to ultimately complete the SCG failure analysis and SCPAC configuration optimization by itself or by a node associated with the SCG.

[0122] In one embodiment, the SCG failure enhanced information further includes an identifier of a target subsequent primary and secondary cell determined by the user equipment.

[0123] The following describes the method for processing the change or addition of primary and secondary cells of the present application through some embodiments.

[0124] Example 1

[0125] This embodiment takes the case where a SCPAC PSCell is changed too late as an example. Figure 7 is a schematic diagram of a process for changing or adding a primary or secondary cell in the case where a SCPAC PSCell is changed too late, provided by one embodiment. As shown in Figure 7, the process for changing or adding a primary or secondary cell includes:

[0126] A0: The UE maintains dual connectivity with the MN (ie, the first serving node) and the source SN (ie, the second serving node), and the UE has been configured with SCPAC configuration.

[0127] It should be noted that in some scenarios, the UE can also maintain a connection with only one service node (i.e., a single connection). However, the UE corresponding to this scenario executes SCPAC to add a PSCell instead of changing the source PScell ​​on the source SN. In this case, the error of adding the PSCell too late will not occur, so the single connection situation is not considered in this embodiment.

[0128] A1: The UE detects that the SCG connected to the source PSCell of the current source SN fails, and at this time, none of the candidate PSCells of SCPAC meets the execution conditions.

[0129] A2: The UE generates SCG failure information (which may include the source PSCell ID, the failed PSCell ID and / or the number of neighboring cell measurements, etc.), and the UE may send the SCG failure information to the MN via a Radio Resource Control (RRC) message.

[0130] A3: Based on the SCPAC configuration in the current UE context, the MN determines that a SCPAC PSCell change error has occurred according to the following principles:

[0131] In the SCG failure information, the failed PSCell ID is the same as the source PSCell ID (ie, the source PSCell fails without SCPAC being executed), and the MN finds a currently suitable target subsequent PSCell (suitable changeable PSCell) based on the UE's measurement report.

[0132] On this basis, the MN determines whether the SCPAC subsequent candidate PSCell list and / or the corresponding execution conditions are determined by the SN. If at least one of the two is determined by the SN, the MN executes A4. Otherwise, the MN optimizes the SCPAC configuration. For example, the MN can determine whether the appropriate target subsequent PSCell is not included in the SCPAC subsequent candidate PSCell list in the SCPAC configuration; or whether the appropriate target subsequent PSCell is included in the list, but the execution conditions of the appropriate target subsequent PSCell may be configured incorrectly. Both situations may result in the PSCell change not being executed in a timely manner, resulting in a PSCell change error. The MN optimizes the SCPAC configuration based on the analysis results.

[0133] A4. (Optional step, whether to execute is determined based on A3): The MN sends an XnAP / X2AP message to the SN (the specific message type may depend on whether the current interface between the MN and the SN is an Xn interface or an X2 interface), which contains SCG failure information and SCPAC configuration information, and optionally, the ID of a suitable target subsequent PSCell determined by the MN; the SCPAC configuration includes: a list of current subsequent candidate PScells and the execution conditions of the corresponding PScells.

[0134] A5 (optional step, performed only if A4 is executed): The SN receives the message from the MN and, based on the message content, analyzes the SCPAC configuration for errors and performs optimizations. (The optimization process can refer to A3, where the SCG failure is analyzed to be due to a late change of the SCPAC PSCell.) The SN may determine that SCPAC is not executed based on the fact that the failed PSCell ID and the source PSCell ID are the same in the SCG failure information.

[0135] The SN can analyze whether there is a more suitable subsequent candidate PSCell for the source PScell ​​that is not included; or the SN can analyze whether the execution conditions of the current subsequent candidate PSCell are not properly configured, resulting in late execution; or the SN receives a suitable subsequent PSCell ID sent by the MN, and the SN further analyzes whether the suitable target subsequent PSCell ID is not included in the subsequent candidate PSCell list; or the suitable target subsequent PSCell ID is already included in the list, but the execution conditions of the suitable PSCell may be configured incorrectly.

[0136] Example 2

[0137] This embodiment uses the case where a SCPAC PSCell is changed or added prematurely, or a PSCell is changed or added incorrectly as an example. Figure 8 is a schematic diagram of a process for changing or adding a primary or secondary cell when a SCPAC PSCell is changed or added prematurely or incorrectly, provided by one embodiment. As shown in Figure 8, the process for changing or adding a primary or secondary cell includes:

[0138] B0: The UE maintains dual connectivity with the MN (i.e., the first serving node) and the source SN (i.e., the second serving node), and the UE has been configured with SCPAC. Note that this embodiment also considers the case where the UE maintains connectivity with only one serving node. In this case, the UE performs SCPAC by adding a PSCell rather than changing the source PScell ​​on the source SN.

[0139] B1: There is a subsequent candidate PSCell that meets the execution conditions. The UE performs a change (dual connection scenario) or adds (single connection scenario) the candidate PSCell, but the PSCell change or addition fails, or the PSCell change or addition succeeds, but an SCG failure soon occurs on the changed / added PSCell.

[0140] B2: The UE generates SCG failure information (which may include the source PSCell ID, the failed PSCell ID and / or the measurement data of the neighboring cell, etc.), and sends the SCG failure information to the MN through an RRC message.

[0141] B3: The MN determines, based on the SCPAC configuration in the current UE context, that a premature SCPAC PSCell change / addition or an incorrect PSCell change / addition has occurred according to the following principles;

[0142] 1) In the dual connectivity scenario, in the SCG failure information, the failed PSCell ID and the source PSCell ID are different (i.e., SCPAC has been executed). The MN finds based on the UE's measurement report that the current suitable target subsequent PSCell is still the source PSCell. The MN can determine that the candidate cell execution condition of the current SCPAC has been executed prematurely, which is a premature PSCell change.

[0143] 2) In a single connection scenario, the SCG failure information contains a failed PSCell ID (i.e., SCPAC has been executed). The MN finds that there is no suitable target subsequent PSCell based on the UE's measurement report. The MN can determine that the candidate cell execution conditions of the current SCPAC have been executed prematurely, which is a premature PSCell addition.

[0144] 3) In the dual-connectivity scenario, in the SCG failure information, the failed PSCell ID and the source PSCell ID are different (i.e., SCPAC has been executed). The MN finds based on the UE's measurement report that the current suitable target subsequent PSCell is neither the source PSCell nor the failed PSCell. The MN can determine that the candidate cell for the current SCPAC execution is an incorrect cell, which is an incorrect PSCell change.

[0145] 4) In a single connection scenario, the SCG failure information contains a failed PSCell ID (i.e., SCPAC has been executed). The MN finds based on the UE's measurement report that the current suitable target subsequent PSCell is not the failed PSCell. The MN can determine that the candidate cell for the current SCPAC execution is an incorrect cell, which means that the incorrect PSCell has been added.

[0146] The MN determines whether the SCPAC subsequent candidate PSCell list and / or the corresponding execution conditions are determined by the SN. If at least one of the two is determined by the SN, the MN executes B4. Otherwise, the MN optimizes the SCPAC configuration. For example, the MN may determine whether the appropriate target subsequent PSCell is not included in the SCPAC subsequent candidate PSCell list; or whether the appropriate target subsequent PSCell is included in the list, but the execution conditions of the appropriate target subsequent PSCell may be incorrectly configured. Both of these situations may result in the PSCell being changed or added to the wrong PSCell, or may result in the PSCell being changed or added prematurely. The MN optimizes the SCPAC configuration based on the analysis results.

[0147] B4: (Optional step, whether to execute is determined according to B3): The MN sends an XnAP / X2AP message to the source SN and / or target SN (the specific message type may depend on whether the current interface between the MN and the SN is an Xn interface or an X2 interface), which contains SCG failure information and SCPAC configuration, and optionally also contains a suitable subsequent PSCell ID determined by the MN, where the SCPAC configuration includes the following: the current subsequent candidate PScell ​​list and the execution conditions of the corresponding PScell.

[0148] B5: The source SN and the target SN determine whether the subsequent candidate PSCell list and / or the corresponding execution conditions of the SCPAC are determined by this node (the changed PScell, that is, the SN where the PScell ​​corresponding to the failed PSCell ID is located). If at least one of the two is determined by this node, this node analyzes the SCPAC configuration error and optimizes it (the optimization process can refer to B3 to determine whether the PSCell is changed or added to the wrong PSCell, or causes a premature PSCell change or addition).

[0149] This node can analyze whether there is a more suitable subsequent candidate PSCell for the source PScell ​​that is not included; or whether the execution conditions of the current subsequent candidate PSCell are inappropriately configured. If this node receives a suitable subsequent PSCell ID sent by the MN, this node can further determine in the SCPAC configuration whether the suitable target subsequent PSCell is not included in the SCPAC's subsequent candidate PSCell list; or whether the suitable target subsequent PSCell is already included in the list, but the execution conditions of the suitable target subsequent PSCell may be incorrectly configured. Both of these situations may result in the PSCell being changed or added to the wrong PSCell, or may result in the PSCell being changed or added prematurely. This node optimizes the SCPAC configuration based on the analysis results.

[0150] Example 3

[0151] This embodiment uses the case where the UE and the MN configured with SCPAC are no longer connected as an example. Figure 9 is a schematic diagram of a process for changing or adding a primary or secondary cell when the UE is connected to a serving node other than an SCG failure-related serving node, provided in one embodiment. As shown in Figure 9, the process for changing or adding a primary or secondary cell includes:

[0152] C0: The UE is configured with SCPAC, and a SCPAC-related SCG failure occurred before the current time. However, the network-side mobile node (i.e., the first serving node) did not promptly receive the SCG failure information from the UE. As the UE moves, it releases the connection to the mobile node associated with the SCG failure and connects to another primary base station (i.e., the third serving node, a Radio Access Network (RAN) node).

[0153] C1: The UE generates enhanced SCG failure information (which may include the source PSCell ID, the failed PSCell ID, and / or neighboring cell measurement data). The enhanced SCG failure information includes the following new information: SCPAC configuration information and the connected PSCell ID at the time of the SCG failure. Optionally, the UE also includes the currently suitable subsequent PSCell ID determined by the UE. The SCPAC configuration information includes the current subsequent candidate PScell ​​list and the execution conditions for the corresponding PScells. The UE sends the enhanced SCG failure information to the currently connected RAN node via an RRC message.

[0154] C2: The RAN Node receives the SCG failure information, determines the MN at the time of the SCG failure based on the PCell ID, and sends an XnAP / X2AP message to the MN (the specific message type may depend on whether the current interface between the MN and the SN is an Xn interface or an X2 interface), which contains enhanced SCG failure information.

[0155] C3: MN is responsible for analyzing the SCPAC configuration error and optimizing the SCPAC configuration. This process can refer to any of the above embodiments. For example, based on the content of the enhanced SCG failure information, MN determines whether the SCPAC subsequent candidate PSCell list and / or corresponding execution conditions are determined by other SNs. If at least one of the two is determined by other SNs, MN sends the enhanced SCG failure information to other SNs for analysis. Otherwise, MN is responsible for analyzing the SCPAC configuration error and optimization.

[0156] The present application also provides a device for processing changes or additions to primary and secondary cells. In this embodiment, a first serving node is connected to a user equipment, and the user equipment has a subsequent conditional primary and secondary cell change or addition SCPAC configuration. The device for processing changes or additions to primary and secondary cells includes:

[0157] a failure information receiving module configured to receive SCG failure information sent by a user equipment when a secondary cell group SCG fails;

[0158] An association module configured to determine a service node associated with the SCG failure based on the SCG failure information;

[0159] The failure information sending module is configured to send SCG failure information and SCPAC configuration information to the associated service node when the associated service node is not the first service node. The SCPAC configuration information includes the current subsequent candidate primary and secondary cell list and the execution conditions of the corresponding primary and secondary cells.

[0160] In one embodiment, the apparatus further comprises:

[0161] The target cell determination module is configured to determine a target subsequent primary and secondary cell and send an identifier of the target subsequent primary and secondary cell to an associated serving node.

[0162] In one embodiment, the apparatus further comprises:

[0163] The first type determination module is configured to determine that the type of SCG failure is a late SCPAC primary and secondary cell change when the first condition is met; the first condition includes: determining based on the SCG failure information that the source primary and secondary cell fails when SCPAC is not executed, and there is a target subsequent primary and secondary cell.

[0164] In one embodiment, the apparatus further comprises:

[0165] The second type determination module is configured to determine that the type of SCG failure is a premature SCPAC primary and secondary cell change when the second condition is met; the second condition includes: in a dual connection scenario, determining that SCPAC has been executed according to the SCG failure information, and the target subsequent primary and secondary cell is the source primary and secondary cell.

[0166] In one embodiment, the apparatus further comprises:

[0167] The third type determination module is configured to determine that the type of SCG failure is premature SCPAC primary and secondary cell addition when the third condition is met; the third condition includes: in a single connection scenario, it is determined according to the SCG failure information that SCPAC has been executed and there is no target subsequent primary and secondary cell.

[0168] In one embodiment, the apparatus further comprises:

[0169] The fourth type determination module is configured to determine that the type of SCG failure is an erroneous SCPAC primary and secondary cell change when the fourth condition is met; the fourth condition includes: in a dual connection scenario, it is determined based on the SCG failure information that SCPAC has been executed, and the target subsequent primary and secondary cell is neither the source primary and secondary cell nor the primary and secondary cell of the SCG failure.

[0170] In one embodiment, the apparatus further comprises:

[0171] The fifth type determination module is configured to determine that the type of SCG failure is an erroneous SCPAC primary and secondary cell addition when the fifth condition is met; the fifth condition includes: in a single connection scenario, determining that SCPAC has been executed based on the SCG failure information, and the target subsequent primary and secondary cells are not the primary and secondary cells of the SCG failure.

[0172] In one embodiment, the apparatus further comprises:

[0173] The optimization module is configured to update the SCPAC configuration of the user equipment according to the type of SCG failure and the SCPAC configuration information in the user equipment text, or optimize the SCPAC configuration and save the optimized SCPAC configuration information, and the optimized SCPAC configuration information is used to configure the SCPAC of the subsequently connected user terminal.

[0174] The processing device for changing or adding primary and secondary cells proposed in this embodiment and the processing method for changing or adding primary and secondary cells applied to the first service node proposed in the above embodiment belong to the same inventive concept. Technical details not fully described in this embodiment can be referred to any of the above embodiments, and this embodiment has the same beneficial effect as executing the processing method for changing or adding primary and secondary cells applied to the first service node.

[0175] The embodiment of the present application also provides a processing device for changing or adding a primary or secondary cell. In this embodiment, the user equipment has a subsequent conditional primary or secondary cell change or addition SCPAC configuration, and the first serving node is the serving node connected to the user equipment when the SCG fails. The device includes:

[0176] an enhanced information receiving module, configured to receive SCG failure enhancement information from a third service node, where the third service node is a service node to which the user equipment is connected after the connection with the first service node is released, the SCG failure enhancement information being sent by the user equipment to the third service node, the SCG failure enhancement information including SCPAC configuration information and an identifier of a primary cell connected to the user equipment at the time of the SCG failure, the SCPAC configuration information including a current subsequent candidate primary and secondary cell list and execution conditions corresponding to the primary and secondary cells;

[0177] The association module is configured to determine the service node associated with the SCG failure based on the SCG failure enhancement information.

[0178] In one embodiment, the SCG failure enhancement information further includes an identifier of a target subsequent primary and secondary cell determined by the user equipment.

[0179] In one embodiment, the apparatus further comprises:

[0180] A type determination module, configured to determine the type of SCG failure according to the SCG failure enhancement information;

[0181] The optimization module is configured to update the SCPAC configuration of the user equipment according to the type of SCG failure and the SCPAC configuration information, or optimize the SCPAC configuration and save the optimized SCPAC configuration information, wherein the optimized SCPAC configuration information is used to configure the SCPAC of a subsequently connected user terminal.

[0182] In one embodiment, the apparatus further comprises:

[0183] The enhanced information sending module is configured to send the SCG failure enhanced information and SCPAC configuration information to the associated service node, where the SCPAC configuration information includes a current subsequent candidate primary and secondary cell list and execution conditions corresponding to the primary and secondary cells.

[0184] The processing device for changing or adding primary and secondary cells proposed in this embodiment and the processing method for changing or adding primary and secondary cells applied to the first service node proposed in the above embodiment belong to the same inventive concept. Technical details not fully described in this embodiment can be referred to any of the above embodiments, and this embodiment has the same beneficial effect as executing the processing method for changing or adding primary and secondary cells applied to the first service node.

[0185] The embodiment of the present application also provides a processing device for changing or adding a primary or secondary cell. In this embodiment, the second serving node fails to associate with the user's secondary cell group SCG, and the user equipment has a subsequent conditional primary or secondary cell change or addition SCPAC configuration. The device includes:

[0186] a failure information receiving module, configured to receive SCG failure information and SCPAC configuration information sent by the first service node, wherein the SCPAC configuration information includes a current subsequent candidate primary and secondary cell list and execution conditions corresponding to the primary and secondary cells;

[0187] The optimization module is configured to update the SCPAC configuration of the user equipment according to the SCG failure information and the SCPAC configuration information, or optimize the SCPAC configuration and save the optimized SCPAC configuration information, wherein the optimized SCPAC configuration information is used to configure the SCPAC of a subsequently connected user terminal.

[0188] In one embodiment, the apparatus further comprises:

[0189] A target cell determination module is configured to determine a target subsequent primary and secondary cell; or

[0190] Receive an identifier of a target subsequent primary and secondary cell determined by the first serving node.

[0191] In one embodiment, the device also includes: a first type determination module, configured to: determine that the type of SCG failure is a late SCPAC primary and secondary cell change when a first condition is met; the first condition includes: determining based on the SCG failure information that the source primary and secondary cells fail when SCPAC is not executed, and there is a target subsequent primary and secondary cell.

[0192] In one embodiment, the device also includes: a second type determination module, configured to: determine that the type of SCG failure is a premature SCPAC primary and secondary cell change when the second condition is met; the second condition includes: in a dual connection scenario, determining that SCPAC has been executed based on the SCG failure information, and the target subsequent primary and secondary cell is the source primary and secondary cell.

[0193] In one embodiment, the device also includes: a fourth type determination module, configured to: determine that the type of SCG failure is an erroneous SCPAC primary and secondary cell change when the fourth condition is met; the fourth condition includes: in a dual-connection scenario, determining that SCPAC has been executed based on the SCG failure information, and the target subsequent primary and secondary cell is neither the source primary and secondary cell, nor the primary and secondary cell of the SCG failure.

[0194] The processing device for changing or adding primary and secondary cells proposed in this embodiment and the processing method for changing or adding primary and secondary cells applied to the second service node proposed in the above embodiment belong to the same inventive concept. Technical details not fully described in this embodiment can be referred to any of the above embodiments, and this embodiment has the same beneficial effect as executing the processing method for changing or adding primary and secondary cells applied to the second service node.

[0195] An embodiment of the present application also provides a processing device for changing or adding a primary or secondary cell. In this embodiment, the third service node is a service node to which the user equipment is connected after the connection with the first service node is released, and the first service node is a service node to which the user equipment is connected when the secondary cell group (SCG) fails. The device includes:

[0196] an enhanced information receiving module, configured to receive SCG failure enhanced information sent by the user equipment, the SCG failure enhanced information including SCPAC configuration information and an identifier of a primary cell connected to the user equipment when the SCG fails, the SCPAC configuration information including a current subsequent candidate primary and secondary cell list and execution conditions corresponding to the primary and secondary cells;

[0197] The enhanced information sending module is configured to send the SCG failure enhanced information to the first service node according to the identifier of the primary cell.

[0198] In one embodiment, the SCG failure enhancement information further includes an identifier of a target subsequent primary and secondary cell determined by the user equipment.

[0199] The processing device for changing or adding primary and secondary cells proposed in this embodiment and the processing method for changing or adding primary and secondary cells applied to the third service node proposed in the above embodiment belong to the same inventive concept. Technical details not fully described in this embodiment can be referred to any of the above embodiments, and this embodiment has the same beneficial effect as executing the processing method for changing or adding primary and secondary cells applied to the third service node.

[0200] The present application also provides a device for processing changes or additions of primary and secondary cells. The device includes:

[0201] A failure information generating module is configured to generate SCG failure information when a secondary cell group SCG fails;

[0202] A failure information sending module is configured to send SCG failure information and SCPAC configuration information to a first service node, where the first service node is the service node connected to the user equipment when the SCG fails, and the SCPAC configuration information includes a current subsequent candidate primary and secondary cell list and execution conditions of the corresponding primary and secondary cells.

[0203] The processing device for changing or adding primary and secondary cells proposed in this embodiment and the processing method for changing or adding primary and secondary cells applied to the first service node proposed in the above embodiment belong to the same inventive concept. Technical details not fully described in this embodiment can be referred to any of the above embodiments, and this embodiment has the same beneficial effect as executing the processing method for changing or adding primary and secondary cells applied to the first service node.

[0204] The present application also provides a device for processing changes or additions of primary and secondary cells. The device includes:

[0205] an enhanced information generation module, configured to generate SCG failure enhanced information, the SCG failure enhanced information including SCPAC configuration information and an identifier of a primary cell connected to the user equipment when the SCG fails, the SCPAC configuration information including a current subsequent candidate primary and secondary cell list and execution conditions corresponding to the primary and secondary cells;

[0206] The enhanced information sending module is configured to send SCG failure enhanced information to a third service node, where the third service node is the service node to which the user equipment is connected after the connection with the first service node is released.

[0207] In one embodiment, the SCG failure enhancement information further includes an identifier of a target subsequent primary and secondary cell determined by the user equipment.

[0208] The processing device for changing or adding primary and secondary cells proposed in this embodiment and the processing method for changing or adding primary and secondary cells applied to the first service node proposed in the above embodiment belong to the same inventive concept. Technical details not fully described in this embodiment can be referred to any of the above embodiments, and this embodiment has the same beneficial effect as executing the processing method for changing or adding primary and secondary cells applied to the first service node.

[0209] The embodiment of the present application also provides a service node, which can be any of the first service node, the second service node, and the third service node in any of the above embodiments. Figure 10 is a schematic diagram of the hardware structure of a service node provided by an embodiment. As shown in Figure 10, the service node provided by the present application includes a processor 710 and a memory 720; the processor 710 in the service node can be one or more, and Figure 10 takes one processor 710 as an example; the memory 720 is configured to store one or more programs; the one or more programs are executed by the one or more processors 710, so that the one or more processors 710 implement the processing method for changing or adding the primary and secondary cells applied to the service node as described in the embodiment of the present application.

[0210] The service node further includes: a communication device 730 , an input device 740 and an output device 750 .

[0211] The processor 710 , memory 720 , communication device 730 , input device 740 and output device 750 in the service node may be connected via a bus or other means. FIG10 takes the bus connection as an example.

[0212] The input device 740 may be used to receive input digital or character information and generate key signal input related to user settings and function control of the service node. The output device 750 may include a display device such as a display screen.

[0213] The communication device 730 may include a receiver and a transmitter. The communication device 730 is configured to perform information transmission and reception communication according to the control of the processor 710.

[0214] The memory 720, as a computer-readable storage medium, can be configured to store software programs, computer executable programs, and modules, such as program instructions / modules corresponding to the processing method for changing or adding primary and secondary cells as described in the embodiments of the present application (for example, modules in the processing device for changing or adding primary and secondary cells). The memory 720 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and application programs required for at least one function; the data storage area may store data created based on the use of the service node, etc. In addition, the memory 720 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 720 may further include a memory remotely located relative to the processor 710, and these remote memories may be connected to the service node via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0215] The embodiment of the present application also provides a user equipment, which can be any of the first user equipment, the second user equipment, and the third user equipment in any of the above embodiments. Figure 11 is a schematic diagram of the hardware structure of a user equipment provided by an embodiment. As shown in Figure 11, the user equipment provided by the present application includes a processor 810 and a memory 820; the processor 810 in the user equipment can be one or more, and Figure 11 takes one processor 810 as an example; the memory 820 is configured to store one or more programs; the one or more programs are executed by the one or more processors 810, so that the one or more processors 810 implement the processing method for changing or adding the primary and secondary cells applied to the user equipment as described in the embodiment of the present application.

[0216] The user equipment further includes: a communication device 830 , an input device 840 and an output device 850 .

[0217] The processor 810 , memory 820 , communication device 830 , input device 840 and output device 850 in the user equipment may be connected via a bus or other means. FIG11 takes the bus connection as an example.

[0218] The input device 840 may be used to receive input digital or character information and generate key signal input related to user settings and function control of the user device. The output device 850 may include a display device such as a display screen.

[0219] The communication device 830 may include a receiver and a transmitter. The communication device 830 is configured to perform information transmission and reception communication according to the control of the processor 810.

[0220] The memory 820, as a computer-readable storage medium, can be configured to store software programs, computer executable programs, and modules, such as program instructions / modules corresponding to the processing method for changing or adding primary and secondary cells as described in the embodiments of the present application (for example, modules in the processing device for changing or adding primary and secondary cells). The memory 820 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and applications required for at least one function; the data storage area may store data created according to the use of the user equipment, etc. In addition, the memory 820 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 820 may further include a memory remotely located relative to the processor 810, and these remote memories may be connected to the user equipment via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0221] FIG12 is a schematic diagram of the structure of a communication system provided by an embodiment of the present application. As shown in FIG12 , the communication system includes a first service node 10 , a second service node 20 , and a user equipment 40 .

[0222] An embodiment of the present application further provides a communication system. FIG13 is a schematic structural diagram of another communication system provided by an embodiment. As shown in FIG13 , the communication system includes a first service node 10 , a third service node 30 , and a user equipment 40 .

[0223] In the communication system provided in the embodiment of the present application, the UE can report SCG failure information and SCPAC configuration information to the service node (such as MN or other service node) connected to it, so that the MN or other service node can determine the service node associated with the SCG failure, and then the service node associated with the SCG failure can analyze and optimize the SCG failure according to the SCPAC configuration information, reduce PSCell switching / increased delay, and improve the reliability and communication quality of SCPAC.

[0224] The communication system proposed in the embodiment of the present application and the processing method for changing or adding the primary and secondary cells proposed in the above embodiment belong to the same inventive concept. The technical details not fully described in this embodiment can be referred to any of the above embodiments, and this embodiment has the same beneficial effect as the processing method for changing or adding the primary and secondary cells.

[0225] An embodiment of the present application further provides a storage medium storing a computer program. When the computer program is executed by a processor, the processing method for changing or adding a primary or secondary cell as described in any one of the embodiments of the present application is implemented.

[0226] An embodiment of the present application further provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements any of the processing methods for changing or adding primary and secondary cells described in the embodiments of the present application.

[0227] The computer storage medium of the embodiment of the present application can adopt any combination of one or more computer-readable media.Computer-readable media can be computer-readable signal media or computer-readable storage media.Computer-readable storage media can be, for example, but not limited to: electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or devices, or any combination of the above.More specific examples (non-exhaustive list) of computer-readable storage media include: electrical connections with one or more wires, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM), flash memories, optical fibers, portable portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the above.Computer-readable storage media can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it.

[0228] A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such a propagated data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0229] The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wire, optical cable, radio frequency (RF), etc., or any suitable combination of the foregoing.

[0230] The computer program code for performing the operations of the present application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as an independent software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (e.g., using an Internet service provider to connect via the Internet).

[0231] An embodiment of the present application further provides a computer program product, comprising a computer program / instruction, which, when executed by a processor, implements the video encoding method as described in any of the above embodiments.

[0232] The above description is merely an exemplary embodiment of the present application and is not intended to limit the scope of protection of the present application.

[0233] It will be understood by those skilled in the art that the term user terminal covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processor, a portable web browser or a vehicle-mounted mobile station.

[0234] In general, various embodiments of the present application may be implemented in hardware or dedicated circuits, software, logic, or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device, although the present application is not limited thereto.

[0235] Embodiments of the present application may be implemented by executing computer program instructions by a data processor of a mobile device, for example, in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

[0236] The block diagram of any logic flow in the drawings of this application may represent program steps, or may represent interconnected logic circuits, modules and functions, or may represent a combination of program steps and logic circuits, modules and functions. A computer program may be stored on a memory. The memory may be of any type suitable for the local technical environment and may be implemented using any suitable data storage technology, such as but not limited to read-only memory (ROM), random access memory (RAM), optical storage devices and systems (digital versatile discs (DVD) or compact disks (CD), etc.). Computer-readable media may include non-transitory storage media. The data processor may be of any type suitable for the local technical environment, such as but not limited to a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), and a processor based on a multi-core processor architecture.

[0237] The above description of exemplary embodiments of the present application has been provided by way of exemplary and non-limiting examples. However, various modifications and adaptations of the above embodiments will be apparent to those skilled in the art, when considered in conjunction with the accompanying drawings and the appended claims, without departing from the scope of the present application. Therefore, the proper scope of the present application will be determined by reference to the appended claims.

Claims

1. A method for processing a change or addition of a primary or secondary cell, applied to a first serving node, the first serving node being connected to a user equipment (UE), the UE having a subsequent conditional primary or secondary cell change or addition SCPAC configuration; the method comprising: receiving SCG failure information sent by the user equipment when the secondary cell group (SCG) fails; Determine the service node associated with the SCG failure according to the SCG failure information; In a case where the associated serving node is not the first serving node, the SCG failure information and SCPAC configuration information are sent to the associated serving node, where the SCPAC configuration information includes a current subsequent candidate primary and secondary cell list and execution conditions corresponding to the primary and secondary cells.

2. The method according to claim 1, further comprising: A target subsequent primary and secondary cell is determined, and an identifier of the target subsequent primary and secondary cell is sent to the associated serving node.

3. The method according to claim 1, wherein when the associated service node is the first service node, the method further comprises: If the first condition is met, the type of SCG failure is determined to be a late SCPAC primary and secondary cell change; The first condition includes: determining, based on the SCG failure information, that the source primary and secondary cells fail when SCPAC is not executed, and that there are target subsequent primary and secondary cells.

4. The method according to claim 1, wherein when the associated service node is the first service node, the method further comprises: If the second condition is met, determining that the type of SCG failure is a premature SCPAC primary / secondary cell change; The second condition includes: in a dual connectivity scenario, determining, according to the SCG failure information, that SCPAC has been executed, and the target subsequent primary and secondary cells are source primary and secondary cells.

5. The method according to claim 1, wherein when the associated service node is the first service node, the method further comprises: If the third condition is met, the type of SCG failure is determined to be premature SCPAC primary and secondary cell addition; The third condition includes: in a single connection scenario, determining according to the SCG failure information that SCPAC has been executed and that there is no target subsequent primary and secondary cell.

6. The method according to claim 1, wherein when the associated service node is the first service node, the method further comprises: If the fourth condition is met, determining that the type of SCG failure is an incorrect SCPAC primary and secondary cell change; The fourth condition includes: in a dual connectivity scenario, it is determined according to the SCG failure information that SCPAC has been executed, and the target subsequent primary and secondary cells are neither the source primary and secondary cells nor the primary and secondary cells where the SCG failed.

7. The method according to claim 1, wherein when the associated service node is the first service node, the method further comprises: If the fifth condition is met, it is determined that the type of SCG failure is an error in adding SCPAC primary and secondary cells; The fifth condition includes: in a single connection scenario, determining according to the SCG failure information that SCPAC has been executed, and the target subsequent primary and secondary cells are not the primary and secondary cells of the SCG failure.

8. The method according to any one of claims 1, 3-7, further comprising: According to the type of SCG failure and the SCPAC configuration information in the user equipment context, the SCPAC configuration of the user equipment is updated, or the SCPAC configuration is optimized and the optimized SCPAC configuration information is saved. The optimized SCPAC configuration information is used to configure the SCPAC of subsequently connected user terminals.

9. A method for processing a change or addition of a primary or secondary cell, applied to a first serving node, wherein a user equipment has a subsequent conditional primary or secondary cell change or addition SCPAC configuration, and the first serving node is the serving node to which the user equipment is connected when an SCG fails; the method comprising: receiving SCG failure enhancement information from a third service node, where the third service node is a service node to which the user equipment is connected after the connection with the first service node is released, the SCG failure enhancement information being sent by the user equipment to the third service node, the SCG failure enhancement information including SCPAC configuration information and an identifier of a primary cell connected to the user equipment when the SCG fails, the SCPAC configuration information including a current subsequent candidate primary and secondary cell list and execution conditions corresponding to the primary and secondary cells; Determine the service node associated with the SCG failure according to the SCG failure enhancement information.

10. The method according to claim 9, wherein: The SCG failure enhancement information further includes an identifier of a target subsequent primary and secondary cell determined by the user equipment.

11. The method according to claim 9, wherein when the associated service node is the first service node, the method further comprises: determining the type of SCG failure according to the SCG failure enhancement information; According to the type of SCG failure and the SCPAC configuration information, the SCPAC configuration of the user equipment is updated, or the SCPAC configuration is optimized and the optimized SCPAC configuration information is saved. The optimized SCPAC configuration information is used to configure the SCPAC of a subsequently connected user terminal.

12. The method according to claim 9, wherein when the associated service node is not the first service node, the method further comprises: The SCG failure enhancement information and SCPAC configuration information are sent to the associated service node, where the SCPAC configuration information includes a current subsequent candidate primary and secondary cell list and execution conditions corresponding to the primary and secondary cells.

13. A method for processing a change or addition of a primary or secondary cell, applied to a second serving node, wherein the second serving node fails to associate with a user's secondary cell group (SCG), and the user equipment has a subsequent conditional primary or secondary cell change or addition (SCPAC) configuration; the method comprising: receiving SCG failure information and SCPAC configuration information sent by the first serving node, wherein the SCPAC configuration information includes a current subsequent candidate primary and secondary cell list and execution conditions corresponding to the primary and secondary cells; The SCPAC configuration of the user equipment is updated according to the SCG failure information and the SCPAC configuration information, or the SCPAC configuration is optimized and the optimized SCPAC configuration information is saved, where the optimized SCPAC configuration information is used to configure the SCPAC of a subsequently connected user terminal.

14. The method according to claim 13, further comprising: Determine a target subsequent primary and secondary cell; or, Receive an identifier of a target subsequent primary and secondary cell determined by the first serving node.

15. The method according to claim 13, further comprising: If the first condition is met, the type of SCG failure is determined to be a late SCPAC primary and secondary cell change; The first condition includes: determining, based on the SCG failure information, that the source primary and secondary cells fail when SCPAC is not executed, and that there are target subsequent primary and secondary cells.

16. The method according to claim 13, further comprising: If the second condition is met, determining that the type of SCG failure is a premature SCPAC primary / secondary cell change; The second condition includes: in a dual connectivity scenario, determining, according to the SCG failure information, that SCPAC has been executed, and the target subsequent primary and secondary cells are source primary and secondary cells.

17. The method according to claim 13, further comprising: If the fourth condition is met, determining that the type of SCG failure is an incorrect SCPAC primary and secondary cell change; The fourth condition includes: in a dual connectivity scenario, it is determined according to the SCG failure information that SCPAC has been executed, and the target subsequent primary and secondary cells are neither the source primary and secondary cells nor the primary and secondary cells where the SCG failed.

18. A method for processing changes or additions of primary and secondary cells, applied to a third serving node, the third serving node being a serving node to which a user equipment is connected after a connection with a first serving node is released, the first serving node being a serving node to which the user equipment is connected when a secondary cell group (SCG) fails; the method comprising: receiving SCG failure enhancement information sent by the user equipment, the SCG failure enhancement information including subsequent conditional primary and secondary cell change or addition SCPAC configuration information and an identifier of the primary cell connected to the user equipment when the SCG fails, the SCPAC configuration information including a current subsequent candidate primary and secondary cell list and execution conditions corresponding to the primary and secondary cells; Send the SCG failure enhancement information to the first serving node according to the identifier of the primary cell.

19. The method according to claim 18, wherein The SCG failure enhancement information further includes an identifier of a target subsequent primary and secondary cell determined by the user equipment.

20. A method for processing a change or addition of a primary or secondary cell, applied to a user equipment, comprising: In the event of a secondary cell group (SCG) failure, SCG failure information is generated; Send SCG failure information and subsequent conditional primary and secondary cell changes or additions of SCPAC configuration information to the first service node, where the first service node is the service node connected to the user equipment when the SCG fails, and the SCPAC configuration information includes the current subsequent candidate primary and secondary cell list and the execution conditions of the corresponding primary and secondary cells.

21. A method for processing a change or addition of a primary or secondary cell, applied to a user equipment, comprising: Generate secondary cell group SCG failure enhancement information, the SCG failure enhancement information including subsequent conditional primary and secondary cell change or addition SCPAC configuration information and an identifier of the primary cell connected to the user equipment when the SCG fails, the SCPAC configuration information including a current subsequent candidate primary and secondary cell list and execution conditions corresponding to the primary and secondary cells; The SCG failure enhancement information is sent to a third service node, where the third service node is a service node to which the user equipment is connected after the connection with the first service node is released.

22. The method according to claim 21, wherein The SCG failure enhancement information further includes an identifier of a target subsequent primary and secondary cell determined by the user equipment.

23. A first service node, comprising: memory, and one or more processors; The memory is configured to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the processing method for changing or adding a primary or secondary cell according to any one of claims 1 to 12.

24. A second service node, comprising: memory, and one or more processors; The memory is configured to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the processing method for changing or adding a primary or secondary cell as described in any one of claims 13 to 17.

25. A third service node, comprising: memory, and one or more processors; The memory is configured to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the processing method for changing or adding a primary or secondary cell as described in any one of claims 18 to 19.

26. A user equipment comprising: memory, and one or more processors; The memory is configured to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the processing method for changing or adding a primary or secondary cell as described in any one of claims 20 to 22.

27. A communication system, comprising the first serving node according to claim 23, the second serving node according to claim 24, and the user equipment according to claim 26.

28. A communication system, comprising the first serving node according to claim 23, the third serving node according to claim 25, and the user equipment according to claim 26.

29. A computer-readable storage medium having a computer program stored thereon, wherein: When the program is executed by a processor, the method for processing the change or addition of the primary and secondary cells as described in any one of claims 1 to 22 is implemented.

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