WO2023202605A1 - 条件切换方法及网络侧设备 - Google Patents

条件切换方法及网络侧设备 Download PDF

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Publication number
WO2023202605A1
WO2023202605A1 PCT/CN2023/089156 CN2023089156W WO2023202605A1 WO 2023202605 A1 WO2023202605 A1 WO 2023202605A1 CN 2023089156 W CN2023089156 W CN 2023089156W WO 2023202605 A1 WO2023202605 A1 WO 2023202605A1
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Prior art keywords
cpac
network side
side device
information
conditional
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PCT/CN2023/089156
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English (en)
French (fr)
Inventor
刘选兵
鲍炜
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维沃移动通信有限公司
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Publication of WO2023202605A1 publication Critical patent/WO2023202605A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point

Definitions

  • This application belongs to the field of communication technology, and specifically relates to a conditional switching method and network side equipment.
  • Dual Connectivity is a resource that provides terminals with two network nodes (access network elements), one of which is the master node (MN) and the other is the secondary node (SN).
  • MN master node
  • SN secondary node
  • SCG Secondary Cell Group
  • PSCell Primary Secondary Cell
  • Scells secondary cells
  • conditional handover In the process of configuring conditional handover (CHO), how the network provides candidate cell configuration for conditional primary and secondary cell addition or change (Conditional PSCell Addition or Change, CPAC) is an urgent technical issue that needs to be solved in related technologies. .
  • Embodiments of the present application provide a conditional handover method and network side equipment, which can solve the problem in related technologies that candidate cell configuration for CPAC cannot be provided.
  • a conditional handover method including: a first network side device sending a handover request message to a second network side device; wherein the first network side device is a source node of conditional handover, and the second network side device
  • the network side device is a target node for conditional handover, and the handover request message is used by the source node to request the target node to prepare resources for conditional handover; the first network side device receives a message from the second network side device.
  • a handover request confirmation message is used by the target node to notify the source node of prepared resources, and the handover request confirmation message includes CPAC information.
  • a conditional handover method including: the second network side device receives a signal from the first network side A handover request message of a device; wherein the first network side device is a source node for conditional handover, the second network side device is a target node for conditional handover, and the handover request message is used for the source node to request the The target node prepares resources for conditional handover; the second network side device sends a handover request confirmation message to the first network side device, and the handover request confirmation message is used by the target node to notify the source node of the prepared resources.
  • the handover request confirmation message includes CPAC information.
  • a first network side device including: a sending module, configured to send a handover request message to a second network side device; wherein the first network side device is a source node of conditional handover, and the The second network side device is the target node of the conditional handover, and the handover request message is used by the source node to request the target node to prepare resources for the conditional handover; the receiving module is used to receive the message from the second network side device.
  • a handover request confirmation message is used by the target node to notify the source node of prepared resources, and the handover request confirmation message includes CPAC information.
  • a second network side device including: a receiving module configured to receive a handover request message from a first network side device; wherein the first network side device is a source node of conditional handover, The second network side device is the target node of conditional handover, and the handover request message is used by the source node to request the target node to prepare resources for conditional handover; a sending module is used to send the message to the first network side device.
  • a handover request confirmation message is used by the target node to notify the source node of prepared resources, and the handover request confirmation message includes CPAC information.
  • a network side device in a fifth aspect, includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are executed by the processor.
  • a first network side device including a processor and a communication interface, wherein the communication interface is used to send a handover request message to a second network side device; wherein the first network side device is The source node of conditional handover, the second network side device is the target node of conditional handover, and the handover request message is used by the source node to request the target node to prepare resources for conditional handover; receiving a message from the second network A handover request confirmation message of the side device.
  • the handover request confirmation message is used by the target node to notify the source node of prepared resources.
  • the handover request confirmation message includes CPAC information.
  • a second network side device including a processor and a communication interface, wherein the communication interface is used to receive a handover request message from the first network side device; wherein the first network side device
  • the device is a source node for conditional handover
  • the second network side device is a target node for conditional handover.
  • the handover request message is used by the source node to request the target node to prepare resources for conditional handover; to the first network
  • the side device sends a handover request confirmation message.
  • the handover request confirmation message is used by the target node to notify the source node of prepared resources.
  • the handover request confirmation message includes CPAC information.
  • a conditional switching system including: a terminal and a network side device, and the network side device can be configured to perform the steps of the method described in the first aspect or the second aspect.
  • a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. The program When the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.
  • a chip in a tenth aspect, includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the method described in the first aspect. steps, or steps to implement the method described in the second aspect.
  • a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the first aspect The steps of the method, or the steps of implementing the method as described in the second aspect.
  • the first network side device sends a handover request message to the second network side device, and the first network side device receives a handover request confirmation message from the second network side device.
  • the handover request The confirmation message includes CPAC information. Since the handover request confirmation message includes CPAC information, it is convenient to provide the terminal with candidate cell configuration for CPAC, which further facilitates including multiple CPAC candidate cells in the conditional handover CHO.
  • Figure 1 is a schematic diagram of a wireless communication system according to an embodiment of the present application.
  • Figure 2 is a schematic flow chart of a conditional switching method according to an embodiment of the present application.
  • Figure 3 is a schematic flow chart of a conditional switching method according to an embodiment of the present application.
  • Figure 4 is a schematic flow chart of a conditional switching method according to an embodiment of the present application.
  • Figure 5 is a schematic flow chart of a conditional switching method according to an embodiment of the present application.
  • Figure 6 is a schematic flow chart of a conditional switching method according to an embodiment of the present application.
  • Figure 7 is a schematic structural diagram of a first network side device according to an embodiment of the present application.
  • Figure 8 is a schematic structural diagram of a second network side device according to an embodiment of the present application.
  • Figure 9 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • Figure 10 is a schematic structural diagram of a network side device according to an embodiment of the present application.
  • first, second, etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and "first,”
  • the objects distinguished by “second” are usually of the same type, and the number of objects is not limited.
  • the first object can be one or multiple.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/” generally indicates that the related objects are in an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced, LTE-A Long Term Evolution
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • NR New Radio
  • FIG. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable.
  • the wireless communication system includes a terminal 11 and a network side device 12.
  • the network side device 12 may include an access network device, where the access network device may also be called a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network unit.
  • Access network equipment can include base stations, WLAN access points or WiFi nodes, etc.
  • the base station can be called Node B, Evolved Node B (eNB), access point, Base Transceiver Station (BTS), radio base station , radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home B-Node, Home Evolved B-Node, Transmitting Receiving Point (TRP) or the above
  • eNB Evolved Node B
  • BTS Base Transceiver Station
  • ESS Extended Service Set
  • Home B-Node Home Evolved B-Node
  • TRP Transmitting Receiving Point
  • the embodiment of the present application provides a conditional switching method 200, which can be executed by the first network side device.
  • the method can be executed by software or hardware installed on the first network side device.
  • the method includes the following steps.
  • the first network side device sends a handover request message to the second network side device; wherein the first network side device is the source node of the conditional handover, and the second network side device is the target node of the conditional handover.
  • the handover request message is used by the source node to request the target node to prepare resources for conditional handover.
  • the first network side device may be the source master node of the conditional handover (such as Source-MN, S-MN), and the second network side device may be the target master node of the conditional handover (such as Target-MN, T-MN). MN).
  • the first network side device receives a handover request confirmation message from the second network side device.
  • the handover request confirmation message is used by the target node to notify the source node of the prepared resources.
  • the handover request confirmation message The message includes Conditional PSCell Addition or Change (CPAC) information.
  • the CPAC mentioned in various embodiments of this application may include conditional primary and secondary cell addition (Conditional PSCell Addition, CPA) and/or conditional primary and secondary cell change (Conditional PSCell Change, CPC).
  • the CPAC information includes at least one of the following 1) to 4):
  • the CPAC candidate cell information includes at least one of the following: frequency point information; physical cell identity; cell group configuration.
  • the CPAC-related measurement requirement information includes at least one of the following: a measurement object, the measurement object contains information on measuring frequency points of CPAC candidate cells; b measurement report configuration; c condition trigger configuration, the condition trigger configuration includes CPAC The measurement event configuration corresponding to the execution conditions of the candidate cell; d. the configuration of the measurement identification (ID), where the measurement configuration associated with the measurement ID includes at least one of the following: MCG measurement configuration, SCG measurement configuration, and target MCG measurement configuration.
  • ID the configuration of the measurement identification
  • CPAC conditional reconfiguration identification information which includes a conditional reconfiguration identification corresponding to at least one CPAC candidate cell prepared by the second network side device.
  • CPAC conditional reconfiguration information includes at least one of the following: conditional reconfiguration identifier; execution condition; Radio Resource Control (Radio Resource Control, RRC) reconfiguration.
  • RRC Radio Resource Control
  • the first network side device sends a switching request message to the second network side device, and the first network side device receives the switching request confirmation message from the second network side device, so
  • the handover request confirmation message includes CPAC information. Since the handover request confirmation message includes CPAC information, it is convenient to provide the terminal with candidate cell configuration for CPAC, which further facilitates including multiple CPAC candidate cells in the conditional handover CHO.
  • the handover request confirmation message contains CPAC information to facilitate instructing the S-MN to Reconfigure the MCG measurement configuration; in the case of secondary cell group (Secondary Cell Group, SCG) measurement, the handover request confirmation message contains CPAC information to facilitate the S-MN to send CPAC information to the source secondary node (S-SN) to initiate Secondary node (SN) modification process, the SN can reconfigure the SCG measurement configuration.
  • conditional handover method supports the inclusion of multiple CPAC candidate cells in conditional handover (CHO), which is conducive to the smooth execution of the conditional handover (Conditional Handover, CHO) process accompanying CPAC.
  • the CPAC information includes CPAC-related measurement requirement information
  • the CPAC-related measurement requirement information includes the configuration of the measurement ID
  • the measurement configuration associated with the measurement ID is the MCG measurement configuration
  • the method further includes: the first network side device sending an RRC reconfiguration message to the terminal, the RRC reconfiguration message including the MCG measurement configuration, and the MCG measurement configuration including measurement information related to the CPAC candidate cell.
  • This embodiment is based on MCG measurement, and the handover request confirmation message contains CPAC information to facilitate instructing the S-MN to reconfigure the MCG measurement configuration.
  • the first network side device receives a switch from the second network side device.
  • the method further includes: the first network side device sending the CPAC information to a third network side device, and the third network side device is the source secondary node (S-SN) of the conditional handover. ;
  • the first network side device receives the SCG measurement configuration from the third network side device, where the SCG measurement configuration includes measurement information of the CPAC candidate cell.
  • At least one of the following is satisfied: 1) If the handover request confirmation message includes the CPAC information, the first network side device sends the CPAC information to the third network side device; 2) the The CPAC information sent by the first network side device is carried by the secondary node modification request message.
  • the method of this embodiment also includes: the first network side device sends an RRC reconfiguration message to the terminal, where the RRC reconfiguration message includes the SCG measurement configuration, and the SCG measurement configuration includes measurement information related to the CPAC candidate cell.
  • This embodiment is based on SCG measurement, and the handover request confirmation message contains CPAC information, which facilitates the S-MN to send the CPAC information to the S-SN to initiate the SN modification process, and the S-SN reconfigures the SCG measurement configuration.
  • the handover request message may include at least one of the following:
  • CPAC candidate secondary node SN The maximum number of at least one of the following that is allowed to be added by the second network side device: CPAC candidate secondary node SN, candidate primary and secondary cells, and candidate cells.
  • CondReconfigId conditional reconfiguration identifiers allowed to be added by the second network side device.
  • S-MN can inform T-MN1 that the CondReconfigId range that can be added is 1-4; S-MN can inform T-MN2 that the CondReconfigId range that can be added is 5-8.
  • the measurement result is a measurement result reported by the terminal.
  • the first network device recommends that the second network device consider one or more configured CPAC candidate cell information.
  • the CPAC candidate target cell information includes at least one of the following: frequency point information; physical cell identification; execution conditions; wherein the measurement ID indicated in the execution conditions is the measurement ID in the MCG measurement configuration or the SCG measurement configuration.
  • the handover request message contains CPAC request indication or capability indication information, so as to maintain the MR-DC connection as much as possible during CHO.
  • the above handover request message may include at least one of the following:
  • the first network device recommends that the second network device consider one or more configured CPAC candidate targets Neighborhood information.
  • the CPAC candidate target cell information includes at least one of the following: frequency point information; physical cell identification; execution conditions; wherein the measurement ID indicated in the execution conditions is the measurement ID in the MCG measurement configuration or the SCG measurement configuration.
  • the second network device may also send a secondary node addition request message to at least one potential target secondary node (Target-SN, T-SN for short).
  • the second network device when considering CPAC candidate cells, only considers one or more CPC candidate target cells that the first network side device recommends considering configuring in the handover request message.
  • the second network device includes the CPAC indication information sent by the source node in the secondary node addition request message, such as measurement results, and the first network side device recommends that one or more CPCs be considered for configuration. Candidate target area.
  • the first network side device can recommend CPAC candidate cells to the second network device through a handover request message, which can efficiently configure CPAC candidate cells without introducing new measurements or too many CPAC candidate cells.
  • the above handover request message also includes at least one of the following:
  • the first network device configures measurement configuration information for the terminal.
  • the second network device may also send a secondary node addition request message to at least one potential target secondary node (Target-SN, T-SN).
  • Target-SN potential target secondary node
  • the second network device only considers one or more CPC candidate target cells that the first network side device recommends considering configuring in the handover request message.
  • the second network side device may not be allowed to introduce additional measurements, so as to avoid configuring too many measurement frequency points that exceed the capabilities of the terminal and improve the performance of the communication system.
  • the handover request confirmation message further includes indication information, the indication information is used to indicate that the CHO candidate cell in the handover request confirmation message contains at least one CPAC Candidate area.
  • the handover request confirmation message when based on MCG or SCG measurement, contains indication information related to the CPAC candidate cell to prevent the S-MN and or S-SN from decoding the inter-node message container.
  • the handover request confirmation message indicates whether the CHO candidate cell contains the CPAC candidate cell, which facilitates the S-MN to configure the terminal to decode the T-MN in advance.
  • Measurement configuration to support CPAC evaluation can help reduce signaling processing time and improve signaling transmission efficiency.
  • the indication information includes at least one of the following:
  • CHO indication accompanying CPAC the CHO indication accompanying CPAC is used to indicate that the second network side device is configured with a CPAC candidate cell.
  • At least one target primary and secondary cell identifier is used to indicate the target primary cell of the terminal CPAC candidate cells are configured.
  • At least one CHO conditional reconfiguration identification information is used to indicate that the target primary cell configuration corresponding to the CHO conditional reconfiguration identification includes at least one CPAC candidate cell.
  • the method provided by this embodiment further includes: the first network side device sends an RRC reconfiguration message to the terminal, where the RRC reconfiguration message includes conditional reconfiguration information of the CHO candidate cell, and the conditional reconfiguration information of the CHO candidate cell Include at least one of the following:
  • the CPAC indication information is used to indicate that the configuration of the CHO candidate cell includes at least one CPAC candidate cell.
  • the RRC reconfiguration message corresponding to the CHO candidate cell includes a target MCG measurement configuration
  • the target MCG measurement configuration includes measurement information related to the CPAC candidate cell.
  • the terminal measures based on source MCG (Source MCG), as shown in Figure 3.
  • Source MCG Source MCG
  • Step 1 The source master node (S-MN) initiates a conditional handover process.
  • the S-MN sends a handover request message (Handover Request) to at least one potential target master node (T-MN).
  • the handover request message contains a conditional handover information request. Cell.
  • the handover request message contains at least one of the following CPAC information:
  • Instruction information for initiating conditional handover with CPAC or MR-DC for example, instruction for initiating conditional handover with CPAC (CHOwithCPAC-initiation).
  • Indication information that supports CPAC that is, the candidate cells that support conditional handover in the conditional handover process initiated by the S-MN carry CPAC candidate cells.
  • Indication information of supporting MR-DC that is, the conditional handover process initiated by the S-MN supports MR-DC.
  • T-MN The maximum number of at least one of the following that the T-MN is allowed to add: CPAC candidate secondary node (SN), candidate primary and secondary cells, and candidate cells.
  • Measurement configuration information configured by the source node (such as S-MN, or S-MN and S-SN) for the UE.
  • conditional handover information request element Conditional Handover Information Request
  • conditional handover trigger cell indication of conditional handover with CPAC (CHOwithCPAC-initiation), or condition with MR-DC.
  • Switch (CHO with MR-DC) to indicate.
  • Step 2 The potential target master node (T-MN) receives the handover request message.
  • the target master node (T-MN) performs at least one of the following operations:
  • the T-MN sends a secondary node addition request message to at least one potential target secondary node (Target-SN, T-SN). Further, the secondary node addition request message sent to the potential target secondary node carries the measurement configuration information configured by the source node (S-MN, or S-MN and S-SN) for the UE.
  • Step 3 T-SN sends secondary node addition confirmation information to T-MN, including at least one CPAC candidate cell configuration.
  • Step 4 T-MN feeds back the Handover Request Acknowledge message (Handover Request Acknowledge) to S-MN.
  • the handover request confirmation message contains at least one of the following CPAC information:
  • CPAC candidate cell information includes at least one of the following: frequency information, such as synchronization signal/physical broadcast channel signal block (Synchronization Signal and PBCH block, SSB) frequency (Frequency); physical cell identity (physCellId); cell group configuration (CG- Config).
  • frequency information such as synchronization signal/physical broadcast channel signal block (Synchronization Signal and PBCH block, SSB) frequency (Frequency); physical cell identity (physCellId); cell group configuration (CG- Config).
  • CPAC-related measurement requirement information such as one or more of the following:
  • Measurement object which contains the frequency point of the CPAC candidate cell.
  • Measurement report configuration (ReportConfig) or condition trigger configuration (CondTriggerConfig), which contains the measurement event configuration corresponding to the CPAC candidate cell execution condition.
  • Measurement ID (measId) configuration.
  • the measurement ID is associated with the MCG measurement configuration.
  • the measurement ID is used to associate a measurement object identifier (measObjectId) and a report configuration identifier (reportConfigId).
  • the measurement configuration associated with a measurement ID includes at least one of the following: MCG measurement configuration, that is, the source master node S-MN The provided MCG measurement configuration; the SCG measurement configuration, that is, the SCG measurement configuration provided by the source secondary node S-SN; the target MCG measurement configuration, that is, the target MCG measurement configuration provided by the target master node T-MN.
  • the UE should be able to clearly identify the Configure and report which node configured the measurement object identifier associated with the configuration identifier in order to perform wireless signal quality measurement on the corresponding measurement object.
  • the measurement ID configured for S-MN is 1, and its associated measurement object is F1 (frequency point 1); the measurement ID configured for S-SN is 1, and its associated measurement object is F2 (frequency point 2).
  • the UE needs to clearly know whether the measurement ID1 is associated with F1 (S-MN configuration) or F2 (S-SN configuration). Therefore, the relevant instruction information needs to be carried in the "handover request confirmation message".
  • Available indication methods include: in the "handover request confirmation message", indicating which node configured the measurement configuration corresponding to the measurement ID.
  • the measurement ID is associated with the MCG measurement configuration.
  • CPAC conditional reconfiguration identification information including the conditional reconfiguration identification (condReconfigID) corresponding to at least one CPAC candidate cell associated with the T-MN.
  • the CPAC conditional reconfiguration information includes at least one of the following: conditional reconfiguration identifier (CondReconfigID); execution condition, wherein, in this embodiment, the terminal regards the measurement ID indicated in the execution condition as the measurement ID in the MCG measurement configuration. Measurement ID; RRC reconfiguration.
  • the above-mentioned CPAC information is included in the handover command message (such as the existing HandoverCommand message, or the new handover command message HandoverCommand2) sent by the T-MN to the S-MN contained in the handover request confirmation message.
  • the handover command message such as the existing HandoverCommand message, or the new handover command message HandoverCommand2
  • the switching command message is HandoverCommand2, which carries at least one piece of CPAC information (cpacCandidateList).
  • the switching command message is specifically as follows.
  • the S-MN receives a handover request acknowledgment message (Handover Request Acknowledge). If the handover request confirmation message contains the CPAC information, in the RRC reconfiguration message sent by the S-MN to the UE, the MCG measurement configuration contains measurement information related to the CPAC candidate cell, such as frequency points, measurement objects, and conditions. Measurement events, condition trigger configuration.
  • Step 5 The S-MN sends an RRC Reconfiguration (RRCReconfiguration) message containing conditional handover to the UE.
  • RRCReconfiguration RRC Reconfiguration
  • Step 6 The UE sends an RRC reconfiguration complete (RRCReconfigurationComplete) message to the S-MN.
  • the terminal measures based on the source SCG (source SCG), as shown in Figure 4.
  • This embodiment includes the following steps:
  • Step 1 The source master node S-MN initiates a conditional handover process. Specifically, the source master node S-MN sends a handover request message to at least one potential target master node T-MN.
  • the source master node S-MN sends a handover request message to at least one potential target master node T-MN.
  • Step 2 The potential target master node (T-MN) initiates CPAC after receiving the handover request message. Specifically, the T-MN sends a secondary node addition request to at least one potential target secondary node (Target-SN, T-SN for short). message; for details, see the introduction of relevant steps in Embodiment 1.
  • Step 3 The target secondary node T-SN sends secondary node addition confirmation information to the T-MN, including the configuration of at least one CPAC candidate cell.
  • T-MN including the configuration of at least one CPAC candidate cell.
  • Step 4 The T-MN feeds back a handover request acknowledgment message (Handover Request Acknowledge) to the S-MN.
  • a handover request acknowledgment message Handover Request Acknowledge
  • Step 4a The S-MN sends CPAC information (or CPAC candidate cell information) to the S-SN.
  • CPAC information or CPAC candidate cell information
  • the S-MN sends the CPAC information to the S-SN.
  • the CPAC information is carried by the secondary node modification request message (S-NODE MODIFICATION REQUEST).
  • Step 4b S-SN sends SCG configuration information to S-MN, such as secondary node modification confirmation message (S-NODE MODIFICATION REQUEST ACKNOWLEDGE).
  • S-NODE MODIFICATION REQUEST ACKNOWLEDGE secondary node modification confirmation message
  • the secondary node (such as S-SN) sends it to the primary node.
  • the message of the node (such as S-MN), such as the secondary node modification confirmation message, contains the SCG measurement configuration.
  • the SCG measurement configuration contains measurement information related to the CPAC candidate cell, that is, the measurement frequency point, measurement object, and measurement object indicated by the CPAC information. wait.
  • Step 5 The S-MN sends an RRC Reconfiguration (RRCReconfiguration) message containing conditional handover to the UE.
  • RRCReconfiguration RRC Reconfiguration
  • the SCG measurement configuration in the RRC reconfiguration message includes measurement information related to the CPAC candidate cell, such as frequency points, measurement objects, conditional measurement events, and conditional trigger configurations.
  • Step 6 The UE sends an RRC reconfiguration complete (RRCReconfigurationComplete) message to the S-MN.
  • the terminal measures based on the source node (S-MN, or S-MN and S-SN), and the source node (S-MN, or S-MN and S-SN) determines the range of CPAC candidate cells, as shown in Figure As shown in 3, this embodiment includes the following steps:
  • Step 1 The source master node S-MN initiates a conditional handover process. Specifically, the source master node S-MN sends a handover request message to at least one potential target master node T-MN.
  • the handover request message contains a conditional handover information request information element. .
  • the handover request message includes at least one of the following CPAC indication information:
  • the UE reports the measurement results to the source node (S-MN, or S-MN and S-SN).
  • the source node (S-MN and/or S-SN) recommends that the target node (T-MN and/or T-SN) considers one or more CPC candidate target cells configured, including at least one of the following information: frequency point Information, such as SSB Frequency; physical cell identity; execution conditions.
  • frequency point Information such as SSB Frequency
  • the terminal regards the measurement ID indicated in the execution conditions as the measurement ID in the MCG measurement configuration or SCG measurement configuration.
  • Step 2 The potential target master node (T-MN) receives the handover request message, and the target master node T-MN sends a slave node addition request message to at least one potential target slave node (Target-SN, T-SN for short).
  • the T-MN when considering CPAC candidate cells, the T-MN only considers the configuration suggested by the source node (S-MN and/or S-SN) in the handover request message to the target node (T-MN and/or T-SN).
  • One or more CPC candidate target cells when considering CPAC candidate cells, the T-MN only considers the configuration suggested by the source node (S-MN and/or S-SN) in the handover request message to the target node (T-MN and/or T-SN).
  • One or more CPC candidate target cells are examples.
  • the T-MN includes the CPAC indication information sent by the source node in the secondary node addition request message, such as measurement results.
  • the source node (S-MN and/or S-SN) recommends that the target node ( T-MN and/or T-SN) considers one or more CPC candidate target cells configured.
  • Step 3 The target secondary node T-SN sends secondary node addition confirmation information to the T-MN, including at least one CPAC candidate cell configuration.
  • Step 4 T-MN feeds back the handover request confirmation message to S-MN.
  • the handover request confirmation message includes at least one of the following CPAC information:
  • CPAC candidate cell information including at least one of the following: frequency information, such as SSB Frequency; physical cell identity; cell group configuration (CG-Config).
  • CPAC conditional reconfiguration identification information including the conditional reconfiguration identification (condReconfigID) corresponding to at least one CPAC candidate cell associated with the T-MN.
  • the CPAC conditional reconfiguration information includes at least one of the following: conditional reconfiguration identification (CondReconfigID); execution condition, the terminal regards the measurement ID indicated in the execution condition as the measurement ID in the MCG measurement configuration or SCG measurement configuration; RRC reconfiguration.
  • conditional reconfiguration identification CondReconfigID
  • execution condition the terminal regards the measurement ID indicated in the execution condition as the measurement ID in the MCG measurement configuration or SCG measurement configuration
  • RRC reconfiguration the terminal regards the measurement ID indicated in the execution condition as the measurement ID in the MCG measurement configuration or SCG measurement configuration.
  • the above-mentioned CPAC information is included in the handover command message (such as the existing HandoverCommand message, or the new handover command message HandoverCommand2) sent by the T-MN to the S-MN contained in the handover request confirmation message.
  • the handover command message such as the existing HandoverCommand message, or the new handover command message HandoverCommand2
  • Step 5 The S-MN receives the handover request confirmation message, and the S-MN sends an RRC Reconfiguration (RRCReconfiguration) message containing conditional handover to the UE.
  • RRC Reconfiguration RRCReconfiguration
  • Step 6 The UE sends an RRC reconfiguration complete (RRRCeconfigurationComplete) message to the source node.
  • the terminal measures based on the source node and does not allow the T-MN to introduce additional measurements for the CPAC configuration.
  • this embodiment includes the following steps:
  • Step 1 The source master node S-MN initiates a conditional handover process. For example, the source master node S-MN sends a handover request message to at least one potential target master node T-MN, where the handover request message contains a conditional handover information request information element.
  • the handover request message includes at least one of the following CPAC indication information:
  • the UE reports the measurement results to the source node (S-MN, or S-MN and S-SN).
  • Measurement configuration information configured by the source node (S-MN, or S-MN and S-SN) for the UE.
  • Step 2 The potential target master node (T-MN) receives the handover request message.
  • the target master node T-MN sends a message to at least one potential target slave node (Target-SN, referred to as T for short).
  • -SN sends a secondary node add request message.
  • the T-MN when considering CPAC candidate cells, the T-MN only considers the frequency and frequency points included in the measurement configuration information configured by the source node (S-MN, or S-MN and S-SN) for the UE in the handover request message. /or community.
  • Step 3 The target secondary node T-SN sends secondary node addition confirmation information to the T-MN, including at least one CPAC candidate cell configuration.
  • Step 4 The T-MN feeds back the handover request confirmation message to the S-MN, and the S-MN receives the handover request confirmation message.
  • the S-MN receives the handover request confirmation message.
  • Step 5 The S-MN sends an RRC Reconfiguration (RRCReconfiguration) message containing conditional handover to the UE.
  • RRCReconfiguration RRC Reconfiguration
  • Step 6 The UE sends an RRC reconfiguration complete (RRRCeconfigurationComplete) message to the source node.
  • the terminal measures based on the target MCG (Target MCG).
  • the CPAC indication is used to decode the configuration message sent by the T-MN in advance. As shown in Figure 3, this embodiment includes the following steps:
  • Step 1 The source master node S-MN initiates a conditional handover process.
  • the source master node S-MN sends a handover request message to at least one potential target master node T-MN.
  • the handover request message includes: the maximum number of at least one of the following that the T-MN is allowed to add: CPAC candidate SN, candidate primary and secondary cells, and candidate cells.
  • Step 2 The potential target master node (T-MN) initiates CPAC after receiving the handover request message. Specifically, the T-MN sends a slave node addition request to at least one potential target slave node (Target-SN, T-SN).
  • T-MN The potential target master node
  • Step 3 The target secondary node T-SN sends secondary node addition confirmation information to the T-MN, including the configuration of at least one CPAC candidate cell.
  • T-MN including the configuration of at least one CPAC candidate cell.
  • the T-MN includes the measurement configuration of the accepted CPAC candidate cell in the RRC reconfiguration corresponding to the CHO candidate cell, such as frequency points, measurement objects, and conditions. Measurement events, condition trigger configuration.
  • Step 4 The T-MN feeds back the Handover Request Acknowledge message to the S-MN.
  • the handover request confirmation message includes CHO with CPAC indication information, which is used to indicate that at least one CHO candidate cell in the handover request confirmation message includes at least one CPAC candidate cell.
  • the CHOwithCPAC instruction information includes at least one of the following:
  • At least one target primary and secondary cell identifier indicating that the terminal's target primary cell is configured with a CPAC candidate cell.
  • At least one CHO conditional reconfiguration identification information is used to indicate that the target primary cell configuration corresponding to the CHO conditional reconfiguration identification includes at least one CPAC candidate cell.
  • the above-mentioned CHOwithCPAC indication information is included in at least one of the following messages: 1) the handover command message (such as HandoverCommand message) sent by the T-MN to the S-MN contained in the handover request confirmation message. 2) Conditional Handover Information Acknowledge IE in Handover Request Acknowledge.
  • Step 5 The S-MN sends an RRC Reconfiguration (RRCReconfiguration) message containing conditional handover to the UE.
  • RRCReconfiguration RRC Reconfiguration
  • the conditional reconfiguration information of the CHO candidate cell in the RRC reconfiguration message sent by the S-MN to the UE includes at least one of the following CPAC information:
  • the terminal regards the measurement ID indicated in the execution conditions as the measurement ID in the target MCG measurement configuration.
  • CPAC indication information indicating that the CHO candidate cell configuration contains at least one CPAC candidate cell.
  • the above operations facilitate decoding the T-MN configuration to the UE in advance to obtain CPAC-related conditional reconfiguration information and measurement configuration information.
  • the MCG measurement configuration in the RRC reconfiguration information corresponding to the CHO candidate cell includes measurement information related to the CPAC candidate cell, such as frequency points, measurement objects, conditional measurement events, and conditional trigger configurations.
  • Step 6 The UE sends an RRC reconfiguration complete (RRRCeconfigurationComplete) message to the source node.
  • the terminal measures SCG based on the CHO configured by the target master node (target-MN), as shown in Figure 5.
  • target-MN target master node
  • Step 1 The source master node S-MN initiates a conditional handover process.
  • the source master node S-MN sends a handover request message to at least one potential target master node T-MN.
  • Step 2 The potential target master node (T-MN) initiates CPAC after receiving the handover request message.
  • T-MN sends a slave node addition request to at least one potential target slave node (Target-SN, T-SN for short).
  • T-SN potential target slave node
  • Step 3 The target secondary node T-SN sends secondary node addition confirmation information to the T-MN, including the configuration of at least one CPAC candidate cell.
  • T-MN including the configuration of at least one CPAC candidate cell.
  • Step 4 If the secondary node addition confirmation information contains at least one accepted CPAC candidate cell, the T-MN notifies the T-SN to include the accepted CPAC candidate cell in the RRC reconfiguration of the target primary and secondary cells corresponding to the CHO candidate cell.
  • Measurement configurations such as frequency points, measurement objects, conditional measurement events, and conditional trigger configurations.
  • Step 5 The T-MN feeds back the Handover Request Acknowledge message to the S-MN.
  • Step 5 The T-MN feeds back the Handover Request Acknowledge message to the S-MN.
  • Step 6 The S-MN sends an RRC reconfiguration (RRCReconfiguration) message containing conditional handover to the UE.
  • RRC reconfiguration RRCReconfiguration
  • the SCG measurement configuration in the RRC reconfiguration information corresponding to the CHO candidate cell includes measurement information related to the CPAC candidate cell, such as frequency points, measurement objects, conditional measurement events, and conditional trigger configurations.
  • Step 7 The UE sends an RRC reconfiguration complete (RRRCeconfigurationComplete) message to the source node.
  • conditional switching method is described in detail above with reference to FIGS. 2 to 5 .
  • a conditional switching method according to another embodiment of the present application will be described in detail below with reference to FIG. 6 .
  • the description of the second network side device is the same as or corresponding to the description of the first network side device in the method shown in FIG. 2. To avoid duplication, the relevant description is appropriately omitted.
  • Figure 6 is a schematic flowchart of the implementation of the conditional switching method according to the embodiment of the present application, which can be applied to the second network side device. As shown in Figure 6, the method 600 includes the following steps.
  • the second network side device receives a handover request message from the first network side device; wherein the first network side device is the source node of the conditional handover, and the second network side device is the target node of the conditional handover, The switch The request message is used by the source node to request the target node to prepare resources for conditional handover.
  • the second network side device sends a handover request confirmation message to the first network side device.
  • the handover request confirmation message is used by the target node to notify the source node of the prepared resources.
  • the handover request confirmation message includes CPAC information.
  • the second network side device receives a handover request message from the first network side device, and the second network side device sends a handover request confirmation message to the first network side device.
  • the handover request The confirmation message includes CPAC information. Since the handover request confirmation message includes CPAC information, it is convenient to provide the terminal with candidate cell configuration for CPAC, which further facilitates including multiple CPAC candidate cells in the conditional handover CHO.
  • the CPAC information includes at least one of the following: 1) CPAC candidate cell information; 2) CPAC-related measurement requirement information; 3) CPAC conditional reconfiguration identification information, and the CPAC conditional reconfiguration
  • the identification information includes a conditional reconfiguration identifier corresponding to at least one CPAC candidate cell prepared by the second network side device; 4) CPAC conditional reconfiguration information, the CPAC conditional reconfiguration information includes at least one of the following: a conditional reconfiguration identifier; Execution conditions; RRC reconfiguration.
  • the CPAC-related measurement requirement information includes at least one of the following: 1) measurement object, the measurement object contains information on measuring frequency points of CPAC candidate cells; 2) measurement report configuration; 3 ) Conditional triggering configuration, the conditional triggering configuration includes the measurement event configuration corresponding to the execution conditions of the CPAC candidate cell; 4)
  • the configuration of the measurement ID, the measurement configuration associated with the measurement ID includes at least one of the following: MCG measurement configuration, SCG Measurement configuration, target MCG measurement configuration.
  • the measurement configuration associated with the measurement ID is the MCG measurement configuration
  • the method further includes: the second network side device initiating CPAC, and/or the handover request confirmation
  • the message includes the CPAC candidate cell information.
  • the handover request message includes at least one of the following: 1) Instruction information used to indicate initiating conditional handover with CPAC or MR-DC; 2) Instruction information used to indicate support for CPAC; 3) Instruction information used to indicate support for MR-DC; 4) Instruction information used to indicate support for multiple SCG candidate cells; 5) The maximum number of at least one of the following allowed to be added by the second network side device: CPAC candidates SN, candidate primary and secondary cells, candidate cells; 6) The range of conditional reconfiguration identifiers (CondReconfigId) allowed to be added by the second network side device; 7) The measurement configuration information configured by the first network side device for the terminal; 8) Measurement results; 9) The first network device recommends that the second network device consider one or more configured CPAC candidate cell information.
  • the method further includes: the second network side device sending a secondary node addition request message to a fourth network side device, where the fourth network side device is the target secondary node of the conditional handover;
  • the second network device when considering CPAC candidate cells, the second network device only considers one or more CPC candidate target cells suggested by the first network device in the handover request message; or, in the secondary node addition request message, Contains the CPAC information sent by the first network side device; or, when considering the CPAC candidate cell, the second network device only considers the measurement configuration information configured for the terminal by the first network device in the handover request message.
  • Frequencies and/or cells included or, when considering CPAC candidate cells, the second network device only considers the measurement results in the handover request message. Frequencies and/or cells included in .
  • the handover request confirmation message further includes indication information, and the indication information is used to indicate that the CHO candidate cell in the handover request confirmation message includes at least one CPAC candidate cell.
  • the indication information includes at least one of the following: 1) CHO indication accompanying CPAC, the CHO indication accompanying CPAC is used to indicate that the second network side device is configured with a CPAC candidate cell; 2) At least one target primary and secondary cell identifier, the target primary and secondary cell identifier is used to indicate that the target primary cell of the terminal is configured with a CPAC candidate cell; 3) At least one CHO conditional reconfiguration identification information, the CHO conditional reconfiguration identification information It is used to indicate that the target primary cell configuration corresponding to the CHO conditional reconfiguration identifier includes at least one CPAC candidate cell.
  • the method further includes: the second network side device sending a secondary node addition request message to a fourth network side device, where the fourth network side device is the target secondary node of the conditional handover;
  • the second network side device receives secondary node addition confirmation information from the fourth network side device.
  • the method further includes: if the secondary node addition confirmation information contains at least one accepted CPAC candidate cell, the second network side device performs one of the following: 1) In the CHO candidate The RRC reconfiguration corresponding to the cell contains the measurement configuration of the accepted CPAC candidate cell; 2) the second network side device notifies the fourth network side device to include it in the RRC reconfiguration of the target primary and secondary cells corresponding to the CHO candidate cell. The accepted measurement configuration of the CPAC candidate cell.
  • FIG. 7 is a schematic structural diagram of a first network side device according to an embodiment of the present application. As shown in Figure 7, the first network side device 700 includes the following modules.
  • the sending module 702 is configured to send a handover request message to the second network side device; wherein the first network side device is the source node of the conditional handover, and the second network side device is the target node of the conditional handover.
  • the request message is used by the source node to request the target node to prepare resources for conditional handover.
  • Receiving module 704 configured to receive a handover request confirmation message from the second network side device.
  • the handover request confirmation message is used by the target node to notify the source node of prepared resources.
  • the handover request confirmation message Includes CPAC information.
  • the first network side device sends a handover request message to the second network side device, and the first network side device receives a handover request confirmation message from the second network side device.
  • the handover request The confirmation message includes CPAC information. Since the handover request confirmation message includes CPAC information, it is convenient to provide the terminal with candidate cell configuration for CPAC, which further facilitates including multiple CPAC candidate cells in the conditional handover CHO.
  • the CPAC information includes at least one of the following: 1) CPAC candidate cell information; 2) CPAC-related measurement requirement information; 3) CPAC conditional reconfiguration identification information, and the CPAC conditional reconfiguration
  • the identification information includes a conditional reconfiguration identifier corresponding to at least one CPAC candidate cell prepared by the second network side device; 4) CPAC conditional reconfiguration information, the CPAC conditional reconfiguration information includes at least one of the following: a conditional reconfiguration identifier; Execution conditions; RRC reconfiguration.
  • the CPAC candidate cell information includes at least one of the following: frequency point information; Physical cell identification; cell group configuration.
  • the CPAC-related measurement requirement information includes at least one of the following: 1) measurement object, the measurement object contains information on measuring frequency points of CPAC candidate cells; 2) measurement report configuration; 3 ) Conditional triggering configuration, the conditional triggering configuration includes the measurement event configuration corresponding to the execution conditions of the CPAC candidate cell; 4)
  • the configuration of the measurement identification ID, the measurement configuration associated with the measurement ID includes at least one of the following: Main cell group MCG Measurement configuration, secondary cell group SCG measurement configuration, target MCG measurement configuration.
  • the measurement configuration associated with the measurement ID is the MCG measurement configuration
  • the sending module 702 is further configured to send an RRC reconfiguration message to the terminal, where the RRC reconfiguration message includes the MCG Measurement configuration, the MCG measurement configuration includes measurement information related to CPAC candidate cells.
  • the sending module 702 is also configured to send the CPAC information to a third network side device, where the third network side device is the source secondary node of the conditional handover; the receiving module 704 is also configured to Receive SCG measurement configuration from the third network side device, where the SCG measurement configuration includes measurement information of the CPAC candidate cell.
  • the sending module 702 is configured to send the CPAC information to the third network side device if the handover request confirmation message includes the CPAC information, and/or the sending module 702 The CPAC information sent is carried by the secondary node modification request message.
  • the sending module 702 is also configured to send an RRC reconfiguration message to the terminal, where the RRC reconfiguration message includes the SCG measurement configuration, and the SCG measurement configuration includes measurement information related to the CPAC candidate cell. .
  • the handover request message includes at least one of the following: 1) Instruction information used to indicate initiating conditional handover with CPAC or MR-DC; 2) Instruction information used to indicate support for CPAC; 3) Instruction information used to indicate support for MR-DC; 4) Instruction information used to indicate support for multiple SCG candidate cells; 5) The maximum number of at least one of the following allowed to be added by the second network side device: CPAC candidates SN, candidate primary and secondary cells, candidate cells; 6) The range of conditional reconfiguration identifiers (CondReconfigId) allowed to be added by the second network side device; 7) The measurement configuration information configured by the first network side device for the terminal; 8) Measurement results; 9) The first network device recommends that the second network device consider one or more configured CPAC candidate cell information.
  • the CPAC candidate target cell information includes at least one of the following: 1) frequency point information; 2) physical cell identity; 3) execution conditions; wherein, the measurement ID indicated in the execution conditions Is the measurement ID in the MCG measurement configuration or SCG measurement configuration.
  • the handover request confirmation message further includes indication information, and the indication information is used to indicate that the CHO candidate cell in the handover request confirmation message includes at least one CPAC candidate cell.
  • the indication information includes at least one of the following: 1) CHO indication accompanying CPAC, the CHO indication accompanying CPAC is used to indicate that the second network side device is configured with a CPAC candidate cell; 2) At least one target primary and secondary cell identifier, the target primary and secondary cell identifier is used to indicate that the target primary cell of the terminal is configured with a CPAC candidate cell; 3) At least one CHO conditional reconfiguration identification information, the CHO conditional reconfiguration identification information Used to indicate that the target primary cell configuration corresponding to the CHO conditional reconfiguration identifier contains at least one CPAC candidate community.
  • the sending module 702 is also configured to send an RRC reconfiguration message to the terminal.
  • the RRC reconfiguration message includes the conditional reconfiguration information of the CHO candidate cell.
  • the conditional reconfiguration information of the CHO candidate cell Including at least one of the following: 1) execution conditions of the CPAC candidate cell, the measurement ID indicated in the execution condition is the measurement ID in the target MCG measurement configuration; 2) conditional reconfiguration identification of the CPAC candidate cell; 3) CPAC indication information , the CPAC indication information is used to indicate that the configuration of the CHO candidate cell includes at least one CPAC candidate cell.
  • the RRC reconfiguration message corresponding to the CHO candidate cell includes a target MCG measurement configuration
  • the target MCG measurement configuration includes measurement information related to the CPAC candidate cell.
  • the first network side device 700 can refer to the process of the method 200 corresponding to the embodiment of the present application, and each unit/module in the first network side device 700 and the above-mentioned other operations and/or functions are respectively for The corresponding processes in method 200 are implemented and can achieve the same or equivalent technical effects. For the sake of simplicity, they will not be described again here.
  • FIG 8 is a schematic structural diagram of a second network side device according to an embodiment of the present application. As shown in Figure 8, the second network side device 800 includes the following modules.
  • the receiving module 802 is configured to receive a handover request message from a first network side device; wherein the first network side device is a source node of conditional handover, and the second network side device is a target node of conditional handover, so The handover request message is used by the source node to request the target node to prepare resources for conditional handover.
  • Sending module 804 configured to send a handover request confirmation message to the first network side device.
  • the handover request confirmation message is used by the target node to notify the source node of prepared resources.
  • the handover request confirmation message includes CPAC. information.
  • the second network side device receives a handover request message from the first network side device, and the second network side device sends a handover request confirmation message to the first network side device.
  • the handover request The confirmation message includes CPAC information. Since the handover request confirmation message includes CPAC information, it is convenient to provide the terminal with candidate cell configuration for CPAC, which further facilitates including multiple CPAC candidate cells in the conditional handover CHO.
  • the CPAC information includes at least one of the following: 1) CPAC candidate cell information; 2) CPAC-related measurement requirement information; 3) CPAC conditional reconfiguration identification information, and the CPAC conditional reconfiguration
  • the identification information includes a conditional reconfiguration identifier corresponding to at least one CPAC candidate cell prepared by the second network side device; 4) CPAC conditional reconfiguration information, the CPAC conditional reconfiguration information includes at least one of the following: a conditional reconfiguration identifier; Execution conditions; RRC reconfiguration.
  • the CPAC-related measurement requirement information includes at least one of the following: 1) measurement object, the measurement object contains information on measuring frequency points of CPAC candidate cells; 2) measurement report configuration; 3 ) Conditional triggering configuration, the conditional triggering configuration includes the measurement event configuration corresponding to the execution conditions of the CPAC candidate cell; 4)
  • the configuration of the measurement ID, the measurement configuration associated with the measurement ID includes at least one of the following: MCG measurement configuration, SCG measurement configuration, target MCG measurement configuration.
  • the measurement configuration associated with the measurement ID is the MCG measurement configuration
  • the sending module 804 is also used to initiate CPAC
  • the handover request confirmation message includes the CPAC candidate cell information
  • the handover request message includes at least one of the following: 1) Instruction information used to indicate initiating conditional handover with CPAC or MR-DC; 2) Instruction information used to indicate support for CPAC; 3) Instruction information used to indicate support for MR-DC; 4) Instruction information used to indicate support for multiple SCG candidate cells; 5) The maximum number of at least one of the following allowed to be added by the second network side device: CPAC candidates SN, candidate primary and secondary cells, candidate cells; 6) The range of conditional reconfiguration identifiers (CondReconfigId) allowed to be added by the second network side device; 7) The measurement configuration information configured by the first network side device for the terminal; 8) Measurement results; 9) The first network device recommends that the second network device consider one or more configured CPAC candidate cell information.
  • the sending module 804 is also configured to send a secondary node addition request message to a fourth network side device, which is the target secondary node of the conditional handover; wherein, the When considering CPAC candidate cells, the second network device only considers one or more CPC candidate target cells suggested by the first network device in the handover request message; or, the secondary node addition request message contains the third CPAC information sent by a network-side device; or, when considering CPAC candidate cells, the second network device only considers the frequency points included in the measurement configuration information configured for the terminal by the first network device in the handover request message. and/or cells; or, when considering CPAC candidate cells, the second network device only considers frequencies and/or cells included in the measurement results in the handover request message.
  • the handover request confirmation message further includes indication information, and the indication information is used to indicate that the CHO candidate cell in the handover request confirmation message includes at least one CPAC candidate cell.
  • the indication information includes at least one of the following: 1) CHO indication accompanying CPAC, the CHO indication accompanying CPAC is used to indicate that the second network side device is configured with a CPAC candidate cell; 2) At least one target primary and secondary cell identifier, the target primary and secondary cell identifier is used to indicate that the target primary cell of the terminal is configured with a CPAC candidate cell; 3) At least one CHO conditional reconfiguration identification information, the CHO conditional reconfiguration identification information It is used to indicate that the target primary cell configuration corresponding to the CHO conditional reconfiguration identifier includes at least one CPAC candidate cell.
  • the sending module 804 is also configured to send a secondary node addition request message to a fourth network side device, which is the target secondary node of the conditional handover; the receiving module 802. Also configured to receive secondary node addition confirmation information from the fourth network side device.
  • the sending module 804 is also configured to perform one of the following: 1) RRC corresponding to the CHO candidate cell The reconfiguration includes the accepted measurement configuration of the CPAC candidate cell; 2) Notify the fourth network side device to include the accepted measurement configuration of the CPAC candidate cell in the RRC reconfiguration of the target primary and secondary cells corresponding to the CHO candidate cell.
  • the second network side device 800 can refer to the process of the method 600 corresponding to the embodiment of the present application, and each unit/module in the second network side device 800 and the above-mentioned other operations and/or functions are respectively for The corresponding processes in method 600 are implemented and can achieve the same or equivalent technical effects. For the sake of simplicity, they will not be described again here.
  • this embodiment of the present application also provides a communication device 900, which includes a processor 901 and a memory 902.
  • the memory 902 stores programs or instructions that can be run on the processor 901, for example.
  • the communication device 900 is a network side device (such as a first network side device or a second network side device)
  • the program or instruction is executed by the processor 901
  • each step of the above conditional switching method embodiment is implemented, and the same can be achieved. The technical effects will not be repeated here to avoid repetition.
  • An embodiment of the present application also provides a first network side device, including a processor and a communication interface.
  • the communication interface is used to send a handover request message to a second network side device; wherein the first network side device is the source of conditional handover. node, the second network side device is the target node of conditional handover, and the handover request message is used by the source node to request the target node to prepare resources for conditional handover; receiving the handover from the second network side device Request confirmation message, the switching request confirmation message is used by the target node to notify the source node of prepared resources, and the switching request confirmation message includes CPAC information.
  • An embodiment of the present application also provides a second network side device, including a processor and a communication interface, the communication interface being used to receive a handover request message from the first network side device; wherein the first network side device is The source node of conditional handover, the second network side device is the target node of conditional handover, and the handover request message is used by the source node to request the target node to prepare resources for conditional handover; to the first network side device Send a handover request confirmation message, where the handover request confirmation message is used by the target node to notify the source node of prepared resources, and the handover request confirmation message includes CPAC information.
  • the network side device (such as the first network side device or the second network side device) embodiment corresponds to the above network side device method embodiment, and each implementation process and implementation manner of the above method embodiment can be applied to the network side device implementation. example, and can achieve the same technical effect.
  • the embodiment of the present application also provides a network side device.
  • the network side device 1000 includes: an antenna 101 , a radio frequency device 102 , a baseband device 103 , a processor 104 and a memory 105 .
  • the antenna 101 is connected to the radio frequency device 102 .
  • the radio frequency device 102 receives information through the antenna 101 and sends the received information to the baseband device 103 for processing.
  • the baseband device 103 processes the information to be sent and sends it to the radio frequency device 102.
  • the radio frequency device 102 processes the received information and then sends it out through the antenna 101.
  • the method performed by the network side device in the above embodiment can be implemented in the baseband device 103, which includes a baseband processor.
  • the baseband device 103 may include, for example, at least one baseband board on which multiple chips are disposed, as shown in FIG. Program to perform the network device operations shown in the above method embodiments.
  • the network side device may also include a network interface 106, which is, for example, a common public wireless interface. public radio interface (CPRI).
  • CPRI public radio interface
  • the network side device 1000 in this embodiment of the present invention also includes: instructions or programs stored in the memory 105 and executable on the processor 104.
  • the processor 104 calls the instructions or programs in the memory 105 to execute Figure 7 or Figure 8
  • the execution methods of each module are shown and achieve the same technical effect. To avoid repetition, they will not be described in detail here.
  • Embodiments of the present application also provide a readable storage medium.
  • Programs or instructions are stored on the readable storage medium.
  • the program or instructions are executed by a processor, each process of the above conditional switching method embodiment is implemented, and the same can be achieved. The technical effects will not be repeated here to avoid repetition.
  • the processor is the processor in the terminal described in the above embodiment.
  • the readable storage media includes computer-readable storage media, such as computer read-only memory (Read Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disks or optical disks, etc.
  • An embodiment of the present application further provides a chip.
  • the chip includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the above conditional switching method embodiment. Each process can achieve the same technical effect. To avoid duplication, it will not be described again here.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • Embodiments of the present application further provide a computer program/program product.
  • the computer program/program product is stored in a storage medium.
  • the computer program/program product is executed by at least one processor to implement the above conditional switching method embodiment.
  • Each process can achieve the same technical effect. To avoid repetition, we will not go into details here.
  • Embodiments of the present application also provide a conditional switching system, including: a terminal and a network side device.
  • the terminal can be used to perform the steps of the conditional switching method as described above.
  • the network side device can be used to perform the conditions as described above. Steps to switch methods.
  • the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation.
  • the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology.
  • the computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to make a terminal (can be a mobile phone, computing machine, server, air conditioner, or network device, etc.) to perform the methods described in various embodiments of this application.

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Abstract

本申请实施例公开了一种条件切换方法及网络侧设备，属于通信技术领域，本申请实施例的条件切换方法包括：第一网络侧设备向第二网络侧设备发送切换请求消息；其中，所述第一网络侧设备为条件切换的源节点，所述第二网络侧设备为条件切换的目标节点，所述切换请求消息用于所述源节点请求所述目标节点为条件切换准备资源；所述第一网络侧设备接收来自于所述第二网络侧设备的切换请求确认消息，所述切换请求确认消息用于所述目标节点向所述源节点通知准备的资源，所述切换请求确认消息包括CPAC信息。

Description

条件切换方法及网络侧设备
交叉引用
本发明要求在2022年04月22日提交中国专利局、申请号为202210429731.2、发明名称为“条件切换方法及网络侧设备”的中国专利申请的优先权，该申请的全部内容通过引用结合在本发明中。
技术领域
本申请属于通信技术领域，具体涉及一种条件切换方法及网络侧设备。
背景技术
双连接(Dual Connectivity，DC)是为终端提供两个网络节点(接入网网元)的资源，其中一个网络节点为主节点(Master node，MN)，另一个为辅节点(Secondary node，SN)，SN控制的辅小区组(Secondary Cell Group，SCG)中包括有主辅小区(Primary Secondary Cell，PSCell)和一些辅小区(Scell)。
在配置条件切换(Conditional Handover，CHO)的过程中，网络如何提供用于条件主辅小区添加或变更(Conditional PSCell Addition or Change，CPAC)的候选小区配置，是相关技术中亟需解决的技术问题。
发明内容
本申请实施例提供一种条件切换方法及网络侧设备，能够解决相关技术中无法提供用于CPAC的候选小区配置的问题。
第一方面，提供了一种条件切换方法，包括：第一网络侧设备向第二网络侧设备发送切换请求消息；其中，所述第一网络侧设备为条件切换的源节点，所述第二网络侧设备为条件切换的目标节点，所述切换请求消息用于所述源节点请求所述目标节点为条件切换准备资源；所述第一网络侧设备接收来自于所述第二网络侧设备的切换请求确认消息，所述切换请求确认消息用于所述目标节点向所述源节点通知准备的资源，所述切换请求确认消息包括CPAC信息。
第二方面，提供了一种条件切换方法，包括：第二网络侧设备接收来自于第一网络侧 设备的切换请求消息；其中，所述第一网络侧设备为条件切换的源节点，所述第二网络侧设备为条件切换的目标节点，所述切换请求消息用于所述源节点请求所述目标节点为条件切换准备资源；所述第二网络侧设备向所述第一网络侧设备发送切换请求确认消息，所述切换请求确认消息用于所述目标节点向所述源节点通知准备的资源，所述切换请求确认消息包括CPAC信息。
第三方面，提供了一种第一网络侧设备，包括：发送模块，用于向第二网络侧设备发送切换请求消息；其中，所述第一网络侧设备为条件切换的源节点，所述第二网络侧设备为条件切换的目标节点，所述切换请求消息用于所述源节点请求所述目标节点为条件切换准备资源；接收模块，用于接收来自于所述第二网络侧设备的切换请求确认消息，所述切换请求确认消息用于所述目标节点向所述源节点通知准备的资源，所述切换请求确认消息包括CPAC信息。
第四方面，提供了一种第二网络侧设备，包括：接收模块，用于接收来自于第一网络侧设备的切换请求消息；其中，所述第一网络侧设备为条件切换的源节点，所述第二网络侧设备为条件切换的目标节点，所述切换请求消息用于所述源节点请求所述目标节点为条件切换准备资源；发送模块，用于向所述第一网络侧设备发送切换请求确认消息，所述切换请求确认消息用于所述目标节点向所述源节点通知准备的资源，所述切换请求确认消息包括CPAC信息。
第五方面，提供了一种网络侧设备，该网络侧设备包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第一方面或第二方面所述的方法的步骤。
第六方面，提供了一种第一网络侧设备，包括处理器及通信接口，其中，所述通信接口用于向第二网络侧设备发送切换请求消息；其中，所述第一网络侧设备为条件切换的源节点，所述第二网络侧设备为条件切换的目标节点，所述切换请求消息用于所述源节点请求所述目标节点为条件切换准备资源；接收来自于所述第二网络侧设备的切换请求确认消息，所述切换请求确认消息用于所述目标节点向所述源节点通知准备的资源，所述切换请求确认消息包括CPAC信息。
第七方面，提供了一种第二网络侧设备，包括处理器及通信接口，其中，所述通信接口用于接收来自于第一网络侧设备的切换请求消息；其中，所述第一网络侧设备为条件切换的源节点，所述第二网络侧设备为条件切换的目标节点，所述切换请求消息用于所述源节点请求所述目标节点为条件切换准备资源；向所述第一网络侧设备发送切换请求确认消息，所述切换请求确认消息用于所述目标节点向所述源节点通知准备的资源，所述切换请求确认消息包括CPAC信息。
第八方面，提供了一种条件切换系统，包括：终端及网络侧设备，所述网络侧设备可用于执行如第一方面或第二方面所述的方法的步骤。
第九方面，提供了一种可读存储介质，所述可读存储介质上存储程序或指令，所述程 序或指令被处理器执行时实现如第一方面所述的方法的步骤，或者实现如第二方面所述的方法的步骤。
第十方面，提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如第一方面所述的方法的步骤，或实现如第二方面所述的方法的步骤。
第十一方面，提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现如第一方面所述的方法的步骤，或者实现如第二方面所述的方法的步骤。
在本申请实施例中，第一网络侧设备向第二网络侧设备发送切换请求消息，所述第一网络侧设备接收来自于所述第二网络侧设备的切换请求确认消息，所述切换请求确认消息包括CPAC信息，由于在切换请求确认消息包括CPAC信息，便于为终端提供用于CPAC的候选小区配置，进一步有利于在条件切换CHO中包含多个CPAC候选小区。
附图说明
图1是根据本申请实施例的无线通信系统的示意图；
图2是根据本申请实施例的条件切换方法的示意性流程图；
图3是根据本申请实施例的条件切换方法的示意性流程图；
图4是根据本申请实施例的条件切换方法的示意性流程图；
图5是根据本申请实施例的条件切换方法的示意性流程图；
图6是根据本申请实施例的条件切换方法的示意性流程图；
图7是根据本申请实施例的第一网络侧设备的结构示意图；
图8是根据本申请实施例的第二网络侧设备的结构示意图；
图9是根据本申请实施例的通信设备的结构示意图；
图10是根据本申请实施例的网络侧设备的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、 “第二”所区别的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”一般表示前后关联对象是一种“或”的关系。
值得指出的是，本申请实施例所描述的技术不限于长期演进型(Long Term Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)系统，还可用于其他无线通信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency Division Multiple Access，SC-FDMA)和其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用，所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。以下描述出于示例目的描述了新空口(New Radio，NR)系统，并且在以下大部分描述中使用NR术语，但是这些技术也可应用于NR系统应用以外的应用，如第6代(6th Generation，6G)通信系统。
图1示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括终端11和网络侧设备12。网络侧设备12可以包括接入网设备，其中，接入网设备也可以称为无线接入网设备、无线接入网(Radio Access Network，RAN)、无线接入网功能或无线接入网单元。接入网设备可以包括基站、WLAN接入点或WiFi节点等，基站可被称为节点B、演进节点B(eNB)、接入点、基收发机站(Base Transceiver Station，BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set，BSS)、扩展服务集(Extended Service Set，ESS)、家用B节点、家用演进型B节点、发送接收点(Transmitting Receiving Point，TRP)或所述领域中其他某个合适的术语，只要达到相同的技术效果，所述基站不限于特定技术词汇，需要说明的是，在本申请实施例中仅以NR系统中的基站为例进行介绍，并不限定基站的具体类型。下面结合附图，通过一些实施例及其应用场景对本申请实施例提供的条件切换方法进行详细地说明。
如图2所示，本申请实施例提供一种条件切换方法200，该方法可以由第一网络侧设备执行，换言之，该方法可以由安装在第一网络侧设备的软件或硬件来执行，该方法包括如下步骤。
S202：第一网络侧设备向第二网络侧设备发送切换请求消息；其中，所述第一网络侧设备为条件切换的源节点，所述第二网络侧设备为条件切换的目标节点，所述切换请求消息用于所述源节点请求所述目标节点为条件切换准备资源。
该实施例中，第一网络侧设备可以为条件切换的源主节点(如Source-MN,S-MN)，第二网络侧设备可以为条件切换的目标主节点(如Target-MN，T-MN)。
S204：第一网络侧设备接收来自于所述第二网络侧设备的切换请求确认消息，所述切换请求确认消息用于所述目标节点向所述源节点通知准备的资源，所述切换请求确认消息包括条件主辅小区添加或变更(Conditional PSCell Addition or Change，CPAC)信息。
本申请各个实施例提到的CPAC可以包括条件主辅小区添加(Conditional PSCell Addition，CPA)和/或条件主辅小区变更(Conditional PSCell Change，CPC)。
可选地，所述CPAC信息包括以下1)至4)至少一项：
1)CPAC候选小区信息。所述CPAC候选小区信息包括以下至少一项：频点信息；物理小区标识；小区组配置。
2)CPAC相关的测量需求信息。所述CPAC相关的测量需求信息包括以下至少一项：a测量对象，所述测量对象包含测量CPAC候选小区的频点的信息；b测量报告配置；c条件触发配置，所述条件触发配置包括CPAC候选小区的执行条件对应的测量事件配置；d测量标识(ID)的配置，所述测量ID所关联的测量配置包括以下至少一项：MCG测量配置，SCG测量配置，目标MCG测量配置。
3)CPAC条件重配置标识信息，所述CPAC条件重配置标识信息包括所述第二网络侧设备准备的至少一个CPAC候选小区对应的条件重配置标识。
4)CPAC条件重配置信息，所述CPAC条件重配置信息包括以下至少一项：条件重配置标识；执行条件；无线资源控制(Radio Resource Control，RRC)重配置。
本申请实施例提供的条件切换方法，第一网络侧设备向第二网络侧设备发送切换请求消息，所述第一网络侧设备接收来自于所述第二网络侧设备的切换请求确认消息，所述切换请求确认消息包括CPAC信息，由于在切换请求确认消息包括CPAC信息，便于为终端提供用于CPAC的候选小区配置，进一步有利于在条件切换CHO中包含多个CPAC候选小区。
对于上述提到的便于在CHO中提供CPAC的候选小区配置，例如，在基于主小区组(Master Cell Group，MCG)测量的情况下，切换请求确认消息中包含CPAC信息，便于指示S-MN来重配置MCG测量配置；在基于辅小区组(Secondary Cell Group，SCG)测量的情况下，切换请求确认消息中包含CPAC信息，便于S-MN向源辅节点(S-SN)发送CPAC信息来发起辅节点(SN)修改过程，SN可以重配置SCG测量配置。
本申请实施例提供的条件切换方法，支持在条件切换(Conditional Handover，CHO)中包含多个CPAC候选小区，有利于伴随CPAC的条件切换(Conditional Handover，CHO)过程的顺利执行。
可选地，在一个实施例中，所述CPAC信息包括CPAC相关的测量需求信息，所述CPAC相关的测量需求信息包括测量ID的配置，所述测量ID所关联的测量配置为MCG测量配置，所述方法还包括：所述第一网络侧设备向终端发送RRC重配置消息，所述RRC重配置消息包括所述MCG测量配置，所述MCG测量配置包括CPAC候选小区相关的测量信息，该实施例的具体执行过程可以参见后续实施例一的介绍。
该实施例为基于MCG测量，切换请求确认消息中包含CPAC信息，便于指示S-MN来重配置MCG测量配置。
可选地，在一个实施例中，所述第一网络侧设备接收来自于所述第二网络侧设备的切 换请求确认消息之后，所述方法还包括：所述第一网络侧设备向第三网络侧设备发送所述CPAC信息，所述第三网络侧设备为条件切换的源辅节点(S-SN)；所述第一网络侧设备接收来自于所述第三网络侧设备的SCG测量配置，所述SCG测量配置包括CPAC候选小区的测量信息。
该实施例中，满足以下至少一项：1)如果所述切换请求确认消息包括所述CPAC信息，则所述第一网络侧设备向第三网络侧设备发送所述CPAC信息；2)所述第一网络侧设备发送的所述CPAC信息由辅节点修改请求消息承载。
该实施例的方法还包括：所述第一网络侧设备向终端发送RRC重配置消息，所述RRC重配置消息包括所述SCG测量配置，所述SCG测量配置包括CPAC候选小区相关的测量信息。
该实施例的具体执行过程可以参见后续实施例二的介绍。
该实施例为基于SCG测量，切换请求确认消息中包含CPAC信息，便于S-MN向S-SN发送CPAC信息来发起SN修改过程，S-SN重配置SCG测量配置。
可选地，在前文各个实施例的基础上，所述切换请求消息可以包括以下至少一项：
1)用于指示发起带CPAC或多无线接入技术双连接MR-DC多无线接入技术双连接(Multi Rat-Dual Connectivity，MR-DC)的条件切换的指示信息。
2)用于指示支持CPAC的指示信息。
3)用于指示支持MR-DC的指示信息。
4)用于指示支持多个SCG候选小区的指示信息。
5)允许所述第二网络侧设备添加的以下至少之一的最大数量：CPAC候选辅节点SN，候选主辅小区，候选小区。
6)允许所述第二网络侧设备添加的条件重配置标识(CondReconfigId)范围。例如：S-MN可以告知T-MN1可添加的CondReconfigId范围为1-4；S-MN可以告知T-MN2可添加的CondReconfigId范围为5-8。
7)所述第一网络侧设备为终端配置的测量配置信息；
8)测量结果。一种实施方式中，该测量结果是终端上报的测量结果。
9)所述第一网络设备建议所述第二网络设备考虑配置的一个或多个CPAC候选小区信息。所述CPAC候选目标小区信息包括以下至少一项：频点信息；物理小区标识；执行条件；其中，所述执行条件中指示的测量ID为MCG测量配置或SCG测量配置中的测量ID。
该实施例中，在切换请求消息中包含CPAC请求指示或能力指示信息，便于在CHO时尽量保持MR-DC连接。
在一个实施例中，上述切换请求消息可以包括以下至少一项：
1)终端上报的测量结果。
2)所述第一网络设备建议所述第二网络设备考虑配置的一个或多个CPAC候选目标 小区信息。所述CPAC候选目标小区信息包括以下至少一项：频点信息；物理小区标识；执行条件；其中，所述执行条件中指示的测量ID为MCG测量配置或SCG测量配置中的测量ID。
该实施例中，所述第二网络设备接收所述切换请求消息后，还可以向至少一个潜在目标辅节点(Target-SN简称T-SN)发送辅节点添加请求消息。
在一个例子中，所述第二网络设备在考虑CPAC候选小区时，仅考虑切换请求消息中第一网络侧设备建议考虑配置的一个或多个CPC候选目标小区。
在另一个例子中，所述第二网络设备在所述辅节点添加请求消息中包含所述源节点发送的CPAC指示信息，如测量结果，第一网络侧设备建议考虑配置的一个或多个CPC候选目标小区。
该实施例中，第一网络侧设备可以通过切换请求消息向第二网络设备推荐CPAC候选小区，能高效地配置CPAC候选小区，且不引入新的测量或过多的CPAC候选小区。
在一个实施例中，上述切换请求消息还包括以下至少一项：
1)终端上报的测量结果。
2)允许所述第二网络侧设备添加的以下至少之一的最大数量：CPAC候选SN，候选主辅小区，候选小区。
3)所述第一网络设备为终端配置的测量配置信息。
该实施例中，所述第二网络设备接收所述切换请求消息后，还可以向至少一个潜在目标辅节点(Target-SN，T-SN)发送辅节点添加请求消息。所述第二网络设备在考虑CPAC候选小区时，仅考虑切换请求消息中第一网络侧设备建议考虑配置的一个或多个CPC候选目标小区。
该实施例中可以不允许所述第二网络侧设备引入额外的测量，避免配置过多的测量频点而超出终端的能力，提高通信系统的性能。
可选地，在一个实施例中，在实施例200的基础上，所述切换请求确认消息还包括指示信息，所述指示信息用于指示所述切换请求确认消息中CHO候选小区包含至少一个CPAC候选小区。
该实施例中，在基于MCG或SCG测量的情况下，切换请求确认消息中包含CPAC候选小区相关的指示信息，避免S-MN和或S-SN解码节点间消息容器。
该实施例中，基于目标主节点(T-MN)的MCG或SCG测量的情况下，切换请求确认消息中指示CHO候选小区是否包含CPAC候选小区，便于S-MN配置终端来提前解码T-MN测量配置来支持CPAC评估，有利于减少信令处理时长，提高信令传输的效率。
可选地，所述指示信息包括以下至少一项：
1)伴随CPAC的CHO指示，所述伴随CPAC的CHO指示用于指示所述第二网络侧设备配置有CPAC候选小区。
2)至少一个目标主辅小区标识，所述目标主辅小区标识用于指示终端的目标主小区 配置有CPAC候选小区。
3)至少一个CHO条件重配置标识信息，所述CHO条件重配置标识信息用于指示所述CHO条件重配置标识对应的目标主小区配置包含至少一个CPAC候选小区。
该实施例提供的方法还包括：所述第一网络侧设备向终端发送RRC重配置消息，所述RRC重配置消息包括CHO候选小区的条件重配置信息，所述CHO候选小区的条件重配置信息包括以下至少一项：
1)CPAC候选小区的执行条件，所述执行条件中指示的测量ID为目标MCG测量配置中的测量ID。
2)CPAC候选小区的条件重配置标识。
3)CPAC指示信息，所述CPAC指示信息用于指示所述CHO候选小区的配置中包含至少一个CPAC候选小区。
可选地，所述RRC重配置消息中，CHO候选小区对应的RRC重配置消息包括目标MCG测量配置，所述目标MCG测量配置包括CPAC候选小区相关的测量信息。
为详细说明本申请实施例提供的条件切换方法，以下将结合几个具体的实施例进行说明。
实施例一
该实施例中，终端基于源MCG(Source MCG)测量，如图3所示，该实施例包括如下步骤：
步骤1：源主节点(S-MN)发起条件切换过程，S-MN向至少一个潜在目标主节点(T-MN)发送切换请求消息(Handover Request)，所述切换请求消息包含条件切换信息请求信元。
可选地，所述切换请求消息包含以下至少一项CPAC信息：
1)发起带CPAC或MR-DC的条件切换的指示信息，例如，发起带CPAC的条件切换的指示(CHOwithCPAC-initiation)。
2)支持CPAC的指示信息，即所述S-MN发起的条件切换过程支持条件切换的候选小区携带CPAC候选小区。
3)支持MR-DC的指示信息，即所述S-MN发起的条件切换过程支持MR-DC。
4)支持多个SCG候选小区的指示信息。即所述S-MN发起的条件切换过程支持条件切换的候选小区携带多个SCG候选小区。
5)允许该T-MN添加的以下至少之一的最大数量：CPAC候选辅节点(SN)，候选主辅小区，候选小区。
6)源节点(如S-MN，或S-MN和S-SN)给UE配置的测量配置信息。
进一步地，上述CPAC信息包含在切换请求消息中的条件切换信息请求信元(Conditional Handover Information Request)中。可选地，条件切换触发(CHO Trigger)信元取值为：带CPAC的条件切换的指示(CHOwithCPAC-initiation)，或带MR-DC的条件 切换(CHO with MR-DC)来指示。
一种实施方式如下表所示：
步骤2：潜在目标主节点(T-MN)接收所述切换请求消息。可选地，如果所述切换请求消息包含所述CPAC信息，目标主节点(T-MN)执行以下至少之一操作：
1)发起CPAC，具体地，T-MN向至少一个潜在目标辅节点(Target-SN，T-SN)发送辅节点添加请求消息。进一步地，在给潜在目标辅节点发送的辅节点添加请求消息中，携带源节点(S-MN，或S-MN和S-SN)给UE配置的测量配置信息。
2)在发送给S-MN的切换请求确认消息(Handover Request Acknowledge)中包含CPAC候选小区信息，具体见步骤4。
步骤3：T-SN向T-MN发送辅节点添加确认信息，包括至少一个CPAC候选小区配置。
步骤4：T-MN向S-MN反馈切换请求确认消息(Handover Request Acknowledge)。
所述切换请求确认消息包含以下至少一项CPAC信息：
1)CPAC候选小区信息。
CPAC候选小区信息包括如下至少之一：频点信息，如同步信号/物理广播信道信号块(Synchronization Signal and PBCH block，SSB)频率(Frequency)；物理小区标识(physCellId)；小区组配置(CG-Config)。
2)CPAC相关的测量需求信息，如以下一项或多项：
a测量对象(MeasObject)，其中包含所述CPAC候选小区的频点。
b测量报告配置(ReportConfig)或条件触发配置(CondTriggerConfig)，其中包含所述CPAC候选小区执行条件对应的测量事件配置。
c测量ID(measId)配置，该实施例中，所述测量ID关联到MCG测量配置。
测量ID用来关联一个测量对象标识(measObjectId)和一个上报配置标识(reportConfigId)。
一个测量ID所关联的测量配置包括以下至少一项：MCG测量配置，即源主节点S-MN 提供的MCG测量配置；SCG测量配置，即源辅节点S-SN提供的SCG测量配置；目标MCG测量配置，即目标主节点T-MN提供的目标MCG测量配置。
因为S-MN，S-SN和T-MN所配置的测量对应的标识有相同的取值范围(例如：取值范围都是1～64)；所以，UE基于该配置消息，应该能够明确被配置上报配置标识所关联的测量对象标识是由哪一个节点所配置的，以便对对应的测量对象进行无线信号质量测量。
例如：S-MN配置的测量ID为1，其关联的测量对象为F1(频点1)；S-SN配置的测量ID为1，其关联的测量对象为F2(频点2)。UE需要基于测量配置，明确地知道测量ID1关联的是F1(S-MN配置)还是F2(S-SN配置)。因此，相关的指示信息需要在“切换请求确认消息”中携带。
可用的指示方法包括：在“切换请求确认消息”中，指示与测量ID对应的测量配置是由哪个节点配置的。本实施例中个，所述测量ID关联到MCG测量配置。
3)CPAC条件重配置标识信息，包含所述T-MN关联的至少一个CPAC候选小区对应的条件重配置标识(condReconfigID)。
4)CPAC条件重配置信息。
所述CPAC条件重配置信息包含如下至少之一：条件重配置标识(CondReconfigID)；执行条件，其中，该实施例中，终端把所述执行条件中指示的测量ID看作是MCG测量配置中的测量ID；RRC重配置。
进一步，上述CPAC信息包含在所述切换请求确认消息所包含的T-MN发送给S-MN的切换命令消息(如现有的HandoverCommand message，或新的切换命令消息HandoverCommand2)中。
一种实施方式中，切换命令消息为HandoverCommand2，其中携带至少一个CPAC信息(cpacCandidateList)，该切换命令消息具体如下所示。
HandoverCommand2message

该实施例中，S-MN接收切换请求确认消息(Handover Request Acknowledge)。如果所述切换请求确认消息中包含所述CPAC信息，S-MN在向UE发送的RRC重配置消息中，MCG测量配置包含所述CPAC候选小区相关的测量信息，如频点，测量对象，条件测量事件，条件触发配置。
步骤5：S-MN给UE发送包含条件切换的RRC重配置(RRCReconfiguration)消息。
步骤6：UE给S-MN发送RRC重配置完成(RRCReconfigurationComplete)消息。
实施例二
该实施例中，终端基于源SCG(source SCG)测量，如图4所示，该实施例包括如下步骤：
步骤1：源主节点S-MN发起条件切换过程，具体地，源主节点S-MN向至少一个潜在目标主节点T-MN发送切换请求消息，具体见实施例一的相关步骤的介绍。
步骤2：潜在目标主节点(T-MN)接收所述切换请求消息后发起CPAC，具体地，T-MN向至少一个潜在目标辅节点(Target-SN，简称T-SN)发送辅节点添加请求消息；具体见实施例一的相关步骤的介绍。
步骤3：目标辅节点T-SN向T-MN发送辅节点添加确认信息，包括至少一个CPAC候选小区配置，具体见实施例一的相关步骤的介绍。
步骤4：T-MN向S-MN反馈切换请求确认消息(Handover Request Acknowledge)，具体见实施例一的相关步骤的介绍。
步骤4a：S-MN向S-SN发送CPAC信息(或称作CPAC候选小区信息)，该CPAC信息具体参见实施例一的步骤4的介绍。
进一步，如果所述切换请求确认消息(Handover Request Acknowledge)中包含上述 CPAC信息，S-MN向S-SN发送所述CPAC信息。
所述CPAC信息由辅节点修改请求消息(S-NODE MODIFICATION REQUEST)承载。
步骤4b：S-SN向S-MN发送SCG配置信息，如辅节点修改确认消息(S-NODE MODIFICATION REQUEST ACKNOWLEDGE)。
如果主节点(如S-MN)发送给辅节点(如S-SN)的消息如辅节点修改请求消息(S-NODE MODIFICATION REQUEST)包含CPAC信息，辅节点(如S-SN)在发送给主节点(如S-MN)的消息如辅节点修改确认消息中包含SCG测量配置，所述SCG测量配置包含CPAC候选小区相关的测量信息，即CPAC信息所指示的测量频点、测量对象、测量对象等。
步骤5：S-MN给UE发送包含条件切换的RRC重配置(RRCReconfiguration)消息。
所述RRC重配置消息中SCG测量配置中包含CPAC候选小区相关的测量信息，如频点，测量对象，条件测量事件，条件触发配置。
步骤6：UE给S-MN发送RRC重配置完成(RRCReconfigurationComplete)消息。
实施例三
该实施例中，终端基于源节点(S-MN，或S-MN和S-SN)测量，源节点(S-MN，或S-MN和S-SN)决定CPAC候选小区的范围，如图3所示，该实施例包括如下步骤：
步骤1：源主节点S-MN发起条件切换过程，具体地，源主节点S-MN向至少一个潜在目标主节点T-MN发送切换请求消息，所述切换请求消息包含条件切换信息请求信元。
基于实施例一中的步骤1，进一步可选地，所述切换请求消息包含以下至少一项CPAC指示信息：
1)UE上报给源节点(S-MN，或S-MN和S-SN)的测量结果。
2)源节点(S-MN和/或S-SN)建议目标节点(T-MN和/或T-SN)考虑配置的一个或多个CPC候选目标小区，包括以下至少之一信息：频点信息，如SSB Frequency；物理小区标识；执行条件，终端将所述执行条件中指示的测量ID看作是MCG测量配置或SCG测量配置中的测量ID。
步骤2：潜在目标主节点(T-MN)接收所述切换请求消息，目标主节点T-MN向至少一个潜在目标辅节点(Target-SN，简称T-SN)发送辅节点添加请求消息。
在一个例子中，T-MN在考虑CPAC候选小区时，仅考虑切换请求消息中源节点(S-MN和/或S-SN)建议目标节点(T-MN和/或T-SN)考虑配置的一个或多个CPC候选目标小区。
在另一个例子中，T-MN在所述辅节点添加请求消息中包含所述源节点发送的CPAC指示信息，如测量结果，源节点(S-MN和/或S-SN)建议目标节点(T-MN和/或T-SN)考虑配置的一个或多个CPC候选目标小区。
步骤3：目标辅节点T-SN向T-MN发送辅节点添加确认信息，包括至少一个CPAC候选小区配置。
步骤4：T-MN向S-MN反馈切换请求确认消息。
基于实施例一，进一步地，所述切换请求确认消息包含以下至少一项CPAC信息：
1)CPAC候选小区信息，包括如下至少之一：频点信息，如SSB Frequency；物理小区标识；小区组配置(CG-Config)。
2)CPAC条件重配置标识信息，包含所述T-MN关联的至少一个CPAC候选小区对应的条件重配置标识(condReconfigID)。
3)CPAC条件重配置信息。
所述CPAC条件重配置信息包含如下至少之一：条件重配置标识(CondReconfigID)；执行条件，终端将所述执行条件中指示的测量ID看作是MCG测量配置或SCG测量配置中的测量ID；RRC重配置。
进一步，上述CPAC信息包含在所述切换请求确认消息所包含的T-MN发送给S-MN的切换命令消息(如现有的HandoverCommand message，或新的切换命令消息HandoverCommand2)中。
步骤5：S-MN接收切换请求确认消息，S-MN给UE发送包含条件切换的RRC重配置(RRCReconfiguration)消息。
步骤6：UE给源节点发送RRC重配置完成(RRCReconfigurationComplete)消息。
实施例四
该实施例中，终端基于源节点测量，不允许T-MN为CPAC配置引入额外的测量，如图3所示，该实施例包括如下步骤：
步骤1：源主节点S-MN发起条件切换过程，例如，源主节点S-MN向至少一个潜在目标主节点T-MN发送切换请求消息，所述切换请求消息包含条件切换信息请求信元。
基于实施例一中的步骤1，可选地，所述切换请求消息包含以下至少一项CPAC指示信息：
1)UE上报给源节点(S-MN，或S-MN和S-SN)的测量结果。
2)允许该T-MN添加的以下至少之一的最大数量：CPAC候选SN，候选主辅小区，候选小区。
3)源节点(S-MN，或S-MN和S-SN)给UE配置的测量配置信息。
步骤2：潜在目标主节点(T-MN)接收所述切换请求消息，具体见实施例一的相关步骤的介绍，目标主节点T-MN向至少一个潜在目标辅节点(Target-SN,简称T-SN)发送辅节点添加请求消息。
该实施例中，T-MN在考虑CPAC候选小区时，仅考虑切换请求消息中源节点(S-MN，或S-MN和S-SN)给UE配置的测量配置信息中包含的频点和/或小区。
步骤3：目标辅节点T-SN向T-MN发送辅节点添加确认信息，包括至少一个CPAC候选小区配置。
步骤4：T-MN向S-MN反馈切换请求确认消息，S-MN接收切换请求确认消息。具体见实施例一的相关步骤的介绍。
步骤5：S-MN给UE发送包含条件切换的RRC重配置(RRCReconfiguration)消息。
步骤6：UE给源节点发送RRC重配置完成(RRCReconfigurationComplete)消息。
实施例五
该实施例中，终端基于目标MCG(Target MCG)测量，可选地，CPAC指示用于提前解码T-MN发送的配置消息，如图3所示，该实施例包括如下步骤：
步骤1：源主节点S-MN发起条件切换过程，例如，源主节点S-MN向至少一个潜在目标主节点T-MN发送切换请求消息，具体见实施例一的相关步骤的介绍。
可选地，所述切换请求消息包含有：允许该T-MN添加的以下至少之一的最大数量：CPAC候选SN，候选主辅小区，候选小区。
步骤2：潜在目标主节点(T-MN)接收所述切换请求消息后发起CPAC，具体地，T-MN向至少一个潜在目标辅节点(Target-SN，T-SN)发送辅节点添加请求，具体见实施例一的相关步骤的介绍。
步骤3：目标辅节点T-SN向T-MN发送辅节点添加确认信息，包括至少一个CPAC候选小区配置，具体见实施例一的相关步骤的介绍。
如果辅节点添加确认信息中包含至少一个接受的CPAC候选小区，T-MN在CHO候选小区对应的RRC重配置中包含对所述接受的CPAC候选小区的测量配置，如频点，测量对象，条件测量事件，条件触发配置。
步骤4：T-MN向S-MN反馈切换请求确认(Handover Request Acknowledge)消息。
可选地，所述切换请求确认消息包含伴随CPAC的CHO(CHOwithCPAC)指示信息，用于指示所述切换请求确认消息中至少一个CHO候选小区包含至少一个CPAC候选小区。所述CHOwithCPAC指示信息包含以下至少一项：
1)CHOwithCPAC指示，指示所述T-MN配置有CPAC候选小区。
2)至少一个目标主辅小区标识，指示终端的目标主小区配置有CPAC候选小区。
3)至少一个CHO条件重配置标识信息，所述CHO条件重配置标识信息用于指示所述CHO条件重配置标识对应的目标主小区配置包含至少一个CPAC候选小区。
进一步，上述CHOwithCPAC指示信息包含在以下至少一项消息：1)所述切换请求确认消息所包含的T-MN发送给S-MN的切换命令消息(如HandoverCommand message)中。2)切换请求确认(Handover Request Acknowledge)中的条件切换信息确认信元(Conditional Handover Information Acknowledge IE)。
步骤5：S-MN给UE发送包含条件切换的RRC重配置(RRCReconfiguration)消息。
可选地，如果所述切换请求确认消息包含CHOwithCPAC指示信息，S-MN发送给UE的RRC重配置消息中CHO候选小区的条件重配置信息包含以下至少一项CPAC信息：
1)一个或多个CPAC候选小区的执行条件，终端将所述执行条件中指示的测量ID看作是目标MCG测量配置中的测量ID。
2)CPAC候选小区的条件重配置标识。
3)CPAC指示信息，指示该CHO候选小区配置中包含至少一个CPAC候选小区。
以上操作便于向UE提前解码T-MN配置，以获取CPAC相关的条件重配置信息和测量配置信息。
所述RRC重配置消息中，CHO候选小区对应的RRC重配置信息中MCG测量配置中包含所述CPAC候选小区相关的测量信息，如频点，测量对象，条件测量事件，条件触发配置。
步骤6：UE给源节点发送RRC重配置完成(RRCReconfigurationComplete)消息。
实施例六
该实施例中，终端基于目标主节点(target-MN)配置的CHO中的SCG测量，如图5所示，该实施例包括如下步骤：
步骤1：源主节点S-MN发起条件切换过程，例如，源主节点S-MN向至少一个潜在目标主节点T-MN发送切换请求消息，具体见实施例一的相关步骤的介绍。
步骤2：潜在目标主节点(T-MN)接收所述切换请求消息后发起CPAC，例如，T-MN向至少一个潜在目标辅节点(Target-SN，简称T-SN)发送辅节点添加请求，具体见实施例一的相关步骤的介绍。
步骤3：目标辅节点T-SN向T-MN发送辅节点添加确认信息，包括至少一个CPAC候选小区配置，具体见实施例一的相关步骤的介绍。
步骤4：如果辅节点添加确认信息中包含至少一个接受的CPAC候选小区，T-MN通知T-SN在CHO候选小区对应的目标主辅小区的RRC重配置中包含对所述接受的CPAC候选小区的测量配置，如频点，测量对象，条件测量事件，条件触发配置。
步骤5：T-MN向S-MN反馈切换请求确认消息Handover Request Acknowledge，具体见实施例三的相关步骤的介绍。
步骤6：S-MN给UE发送包含条件切换的RRC重配置(RRCReconfiguration)消息，具体见实施例三的相关步骤的介绍。
所述RRC重配置消息中，CHO候选小区对应的RRC重配置信息中SCG测量配置中包含所述CPAC候选小区相关的测量信息，如频点，测量对象，条件测量事件，条件触发配置。
步骤7：UE给源节点发送RRC重配置完成(RRCReconfigurationComplete)消息。
以上结合图2至图5详细描述了根据本申请实施例的条件切换方法。下面将结合图6详细描述根据本申请另一实施例的条件切换方法。可以理解的是，从第二网络侧设备的描述与图2所示的方法中的第一网络侧设备的描述相同或相对应，为避免重复，适当省略相关描述。
图6是本申请实施例的条件切换方法实现流程示意图，可以应用在第二网络侧设备。如图6所示，该方法600包括如下步骤。
S602：第二网络侧设备接收来自于第一网络侧设备的切换请求消息；其中，所述第一网络侧设备为条件切换的源节点，所述第二网络侧设备为条件切换的目标节点，所述切换 请求消息用于所述源节点请求所述目标节点为条件切换准备资源。
S604：第二网络侧设备向所述第一网络侧设备发送切换请求确认消息，所述切换请求确认消息用于所述目标节点向所述源节点通知准备的资源，所述切换请求确认消息包括CPAC信息。
在本申请实施例中，第二网络侧设备接收来自于第一网络侧设备的切换请求消息，所述第二网络侧设备向所述第一网络侧设备发送切换请求确认消息，所述切换请求确认消息包括CPAC信息，由于在切换请求确认消息包括CPAC信息，便于为终端提供用于CPAC的候选小区配置，进一步有利于在条件切换CHO中包含多个CPAC候选小区。
可选地，作为一个实施例，所述CPAC信息包括以下至少一项：1)CPAC候选小区信息；2)CPAC相关的测量需求信息；3)CPAC条件重配置标识信息，所述CPAC条件重配置标识信息包括所述第二网络侧设备准备的至少一个CPAC候选小区对应的条件重配置标识；4)CPAC条件重配置信息，所述CPAC条件重配置信息包括以下至少一项：条件重配置标识；执行条件；RRC重配置。
可选地，作为一个实施例，所述CPAC相关的测量需求信息包括以下至少一项：1)测量对象，所述测量对象包含测量CPAC候选小区的频点的信息；2)测量报告配置；3)条件触发配置，所述条件触发配置包括CPAC候选小区的执行条件对应的测量事件配置；4)测量ID的配置，所述测量ID所关联的测量配置包括以下至少一项：MCG测量配置，SCG测量配置，目标MCG测量配置。
可选地，作为一个实施例，所述测量ID所关联的测量配置为所述MCG测量配置，所述方法还包括：所述第二网络侧设备发起CPAC，和/或，所述切换请求确认消息包括所述CPAC候选小区信息。
可选地，作为一个实施例，所述切换请求消息包括以下至少一项：1)用于指示发起带CPAC或MR-DC的条件切换的指示信息；2)用于指示支持CPAC的指示信息；3)用于指示支持MR-DC的指示信息；4)用于指示支持多个SCG候选小区的指示信息；5)允许所述第二网络侧设备添加的以下至少之一的最大数量：CPAC候选SN，候选主辅小区，候选小区；6)允许所述第二网络侧设备添加的条件重配置标识(CondReconfigId)范围；7)所述第一网络侧设备为终端配置的测量配置信息；8)测量结果；9)所述第一网络设备建议所述第二网络设备考虑配置的一个或多个CPAC候选小区信息。
可选地，作为一个实施例，所述方法还包括：所述第二网络侧设备向第四网络侧设备发送辅节点添加请求消息，所述第四网络侧设备为条件切换的目标辅节点；其中，所述第二网络设备在考虑CPAC候选小区时，仅考虑所述切换请求消息中所述第一网络设备建议的一个或多个CPC候选目标小区；或者，所述辅节点添加请求消息中包含所述第一网络侧设备发送的CPAC信息；或者，所述第二网络设备在考虑CPAC候选小区时，仅考虑所述切换请求消息中所述第一网络设备为终端配置的测量配置信息中包含的频点和/或小区；或者，所述第二网络设备在考虑CPAC候选小区时，仅考虑所述切换请求消息中测量结果 中包含的频点和/或小区。
可选地，作为一个实施例，所述切换请求确认消息还包括指示信息，所述指示信息用于指示所述切换请求确认消息中CHO候选小区包含至少一个CPAC候选小区。
可选地，作为一个实施例，所述指示信息包括以下至少一项：1)伴随CPAC的CHO指示，所述伴随CPAC的CHO指示用于指示所述第二网络侧设备配置有CPAC候选小区；2)至少一个目标主辅小区标识，所述目标主辅小区标识用于指示终端的目标主小区配置有CPAC候选小区；3)至少一个CHO条件重配置标识信息，所述CHO条件重配置标识信息用于指示所述CHO条件重配置标识对应的目标主小区配置包含至少一个CPAC候选小区。
可选地，作为一个实施例，所述方法还包括：所述第二网络侧设备向第四网络侧设备发送辅节点添加请求消息，所述第四网络侧设备为条件切换的目标辅节点；所述第二网络侧设备接收来自于所述第四网络侧设备的辅节点添加确认信息。
可选地，作为一个实施例，所述方法还包括：如果所述辅节点添加确认信息中包含至少一个接受的CPAC候选小区，所述第二网络侧设备执行如下之一：1)在CHO候选小区对应的RRC重配置中包含所述接受的CPAC候选小区的测量配置；2)所述第二网络侧设备通知第四网络侧设备在CHO候选小区对应的目标主辅小区的RRC重配置中包含所述接受的CPAC候选小区的测量配置。
图7是根据本申请实施例的第一网络侧设备的结构示意图，如图7所示，第一网络侧设备700包括如下模块。
发送模块702，用于向第二网络侧设备发送切换请求消息；其中，所述第一网络侧设备为条件切换的源节点，所述第二网络侧设备为条件切换的目标节点，所述切换请求消息用于所述源节点请求所述目标节点为条件切换准备资源。
接收模块704，用于接收来自于所述第二网络侧设备的切换请求确认消息，所述切换请求确认消息用于所述目标节点向所述源节点通知准备的资源，所述切换请求确认消息包括CPAC信息。
在本申请实施例中，第一网络侧设备向第二网络侧设备发送切换请求消息，所述第一网络侧设备接收来自于所述第二网络侧设备的切换请求确认消息，所述切换请求确认消息包括CPAC信息，由于在切换请求确认消息包括CPAC信息，便于为终端提供用于CPAC的候选小区配置，进一步有利于在条件切换CHO中包含多个CPAC候选小区。
可选地，作为一个实施例，所述CPAC信息包括以下至少一项：1)CPAC候选小区信息；2)CPAC相关的测量需求信息；3)CPAC条件重配置标识信息，所述CPAC条件重配置标识信息包括所述第二网络侧设备准备的至少一个CPAC候选小区对应的条件重配置标识；4)CPAC条件重配置信息，所述CPAC条件重配置信息包括以下至少一项：条件重配置标识；执行条件；RRC重配置。
可选地，作为一个实施例，所述CPAC候选小区信息包括以下至少一项：频点信息； 物理小区标识；小区组配置。
可选地，作为一个实施例，所述CPAC相关的测量需求信息包括以下至少一项：1)测量对象，所述测量对象包含测量CPAC候选小区的频点的信息；2)测量报告配置；3)条件触发配置，所述条件触发配置包括CPAC候选小区的执行条件对应的测量事件配置；4)测量标识ID的配置，所述测量ID所关联的测量配置包括以下至少一项：主小区组MCG测量配置，辅小区组SCG测量配置，目标MCG测量配置。
可选地，作为一个实施例，所述测量ID所关联的测量配置为所述MCG测量配置，发送模块702，还用于向终端发送RRC重配置消息，所述RRC重配置消息包括所述MCG测量配置，所述MCG测量配置包括CPAC候选小区相关的测量信息。
可选地，作为一个实施例，发送模块702，还用于向第三网络侧设备发送所述CPAC信息，所述第三网络侧设备为条件切换的源辅节点；接收模块704，还用于接收来自于所述第三网络侧设备的SCG测量配置，所述SCG测量配置包括CPAC候选小区的测量信息。
可选地，作为一个实施例，发送模块702，用于如果所述切换请求确认消息包括所述CPAC信息，则向第三网络侧设备发送所述CPAC信息，和/或，所述发送模块702发送的所述CPAC信息由辅节点修改请求消息承载。
可选地，作为一个实施例，发送模块702，还用于向终端发送RRC重配置消息，所述RRC重配置消息包括所述SCG测量配置，所述SCG测量配置包括CPAC候选小区相关的测量信息。
可选地，作为一个实施例，所述切换请求消息包括以下至少一项：1)用于指示发起带CPAC或MR-DC的条件切换的指示信息；2)用于指示支持CPAC的指示信息；3)用于指示支持MR-DC的指示信息；4)用于指示支持多个SCG候选小区的指示信息；5)允许所述第二网络侧设备添加的以下至少之一的最大数量：CPAC候选SN，候选主辅小区，候选小区；6)允许所述第二网络侧设备添加的条件重配置标识(CondReconfigId)范围；7)所述第一网络侧设备为终端配置的测量配置信息；8)测量结果；9)所述第一网络设备建议所述第二网络设备考虑配置的一个或多个CPAC候选小区信息。
可选地，作为一个实施例，所述CPAC候选目标小区信息包括以下至少一项：1)频点信息；2)物理小区标识；3)执行条件；其中，所述执行条件中指示的测量ID为MCG测量配置或SCG测量配置中的测量ID。
可选地，作为一个实施例，所述切换请求确认消息还包括指示信息，所述指示信息用于指示所述切换请求确认消息中CHO候选小区包含至少一个CPAC候选小区。
可选地，作为一个实施例，所述指示信息包括以下至少一项：1)伴随CPAC的CHO指示，所述伴随CPAC的CHO指示用于指示所述第二网络侧设备配置有CPAC候选小区；2)至少一个目标主辅小区标识，所述目标主辅小区标识用于指示终端的目标主小区配置有CPAC候选小区；3)至少一个CHO条件重配置标识信息，所述CHO条件重配置标识信息用于指示所述CHO条件重配置标识对应的目标主小区配置包含至少一个CPAC候选 小区。
可选地，作为一个实施例，发送模块702，还用于向终端发送RRC重配置消息，所述RRC重配置消息包括CHO候选小区的条件重配置信息，所述CHO候选小区的条件重配置信息包括以下至少一项：1)CPAC候选小区的执行条件，所述执行条件中指示的测量ID为目标MCG测量配置中的测量ID；2)CPAC候选小区的条件重配置标识；3)CPAC指示信息，所述CPAC指示信息用于指示所述CHO候选小区的配置中包含至少一个CPAC候选小区。
可选地，作为一个实施例，所述RRC重配置消息中，CHO候选小区对应的RRC重配置消息包括目标MCG测量配置，所述目标MCG测量配置包括CPAC候选小区相关的测量信息。
根据本申请实施例的第一网络侧设备700可以参照对应本申请实施例的方法200的流程，并且，该第一网络侧设备700中的各个单元/模块和上述其他操作和/或功能分别为了实现方法200中的相应流程，并且能够达到相同或等同的技术效果，为了简洁，在此不再赘述。
图8是根据本申请实施例的第二网络侧设备的结构示意图，如图8所示，第二网络侧设备800包括如下模块。
接收模块802，用于接收来自于第一网络侧设备的切换请求消息；其中，所述第一网络侧设备为条件切换的源节点，所述第二网络侧设备为条件切换的目标节点，所述切换请求消息用于所述源节点请求所述目标节点为条件切换准备资源。
发送模块804，用于向所述第一网络侧设备发送切换请求确认消息，所述切换请求确认消息用于所述目标节点向所述源节点通知准备的资源，所述切换请求确认消息包括CPAC信息。
在本申请实施例中，第二网络侧设备接收来自于第一网络侧设备的切换请求消息，所述第二网络侧设备向所述第一网络侧设备发送切换请求确认消息，所述切换请求确认消息包括CPAC信息，由于在切换请求确认消息包括CPAC信息，便于为终端提供用于CPAC的候选小区配置，进一步有利于在条件切换CHO中包含多个CPAC候选小区。
可选地，作为一个实施例，所述CPAC信息包括以下至少一项：1)CPAC候选小区信息；2)CPAC相关的测量需求信息；3)CPAC条件重配置标识信息，所述CPAC条件重配置标识信息包括所述第二网络侧设备准备的至少一个CPAC候选小区对应的条件重配置标识；4)CPAC条件重配置信息，所述CPAC条件重配置信息包括以下至少一项：条件重配置标识；执行条件；RRC重配置。
可选地，作为一个实施例，所述CPAC相关的测量需求信息包括以下至少一项：1)测量对象，所述测量对象包含测量CPAC候选小区的频点的信息；2)测量报告配置；3)条件触发配置，所述条件触发配置包括CPAC候选小区的执行条件对应的测量事件配置；4)测量ID的配置，所述测量ID所关联的测量配置包括以下至少一项：MCG测量配置， SCG测量配置，目标MCG测量配置。
可选地，作为一个实施例，所述测量ID所关联的测量配置为所述MCG测量配置，所述发送模块804，还用于发起CPAC，和/或，所述切换请求确认消息包括所述CPAC候选小区信息。
可选地，作为一个实施例，所述切换请求消息包括以下至少一项：1)用于指示发起带CPAC或MR-DC的条件切换的指示信息；2)用于指示支持CPAC的指示信息；3)用于指示支持MR-DC的指示信息；4)用于指示支持多个SCG候选小区的指示信息；5)允许所述第二网络侧设备添加的以下至少之一的最大数量：CPAC候选SN，候选主辅小区，候选小区；6)允许所述第二网络侧设备添加的条件重配置标识(CondReconfigId)范围；7)所述第一网络侧设备为终端配置的测量配置信息；8)测量结果；9)所述第一网络设备建议所述第二网络设备考虑配置的一个或多个CPAC候选小区信息。
可选地，作为一个实施例，所述发送模块804，还用于向第四网络侧设备发送辅节点添加请求消息，所述第四网络侧设备为条件切换的目标辅节点；其中，所述第二网络设备在考虑CPAC候选小区时，仅考虑所述切换请求消息中所述第一网络设备建议的一个或多个CPC候选目标小区；或者，所述辅节点添加请求消息中包含所述第一网络侧设备发送的CPAC信息；或者，所述第二网络设备在考虑CPAC候选小区时，仅考虑所述切换请求消息中所述第一网络设备为终端配置的测量配置信息中包含的频点和/或小区；或者，所述第二网络设备在考虑CPAC候选小区时，仅考虑所述切换请求消息中测量结果中包含的频点和/或小区。
可选地，作为一个实施例，所述切换请求确认消息还包括指示信息，所述指示信息用于指示所述切换请求确认消息中CHO候选小区包含至少一个CPAC候选小区。
可选地，作为一个实施例，所述指示信息包括以下至少一项：1)伴随CPAC的CHO指示，所述伴随CPAC的CHO指示用于指示所述第二网络侧设备配置有CPAC候选小区；2)至少一个目标主辅小区标识，所述目标主辅小区标识用于指示终端的目标主小区配置有CPAC候选小区；3)至少一个CHO条件重配置标识信息，所述CHO条件重配置标识信息用于指示所述CHO条件重配置标识对应的目标主小区配置包含至少一个CPAC候选小区。
可选地，作为一个实施例，所述发送模块804，还用于向第四网络侧设备发送辅节点添加请求消息，所述第四网络侧设备为条件切换的目标辅节点；所述接收模块802，还用于接收来自于所述第四网络侧设备的辅节点添加确认信息。
可选地，作为一个实施例，如果所述辅节点添加确认信息中包含至少一个接受的CPAC候选小区，所述发送模块804，还用于执行如下之一：1)在CHO候选小区对应的RRC重配置中包含所述接受的CPAC候选小区的测量配置；2)通知第四网络侧设备在CHO候选小区对应的目标主辅小区的RRC重配置中包含所述接受的CPAC候选小区的测量配置。
根据本申请实施例的第二网络侧设备800可以参照对应本申请实施例的方法600的流程，并且，该第二网络侧设备800中的各个单元/模块和上述其他操作和/或功能分别为了实现方法600中的相应流程，并且能够达到相同或等同的技术效果，为了简洁，在此不再赘述。
可选的，如图9所示，本申请实施例还提供一种通信设备900，包括处理器901和存储器902，存储器902上存储有可在所述处理器901上运行的程序或指令，例如，该通信设备900为网络侧设备(如第一网络侧设备或第二网络侧设备)时，该程序或指令被处理器901执行时实现上述条件切换方法实施例的各个步骤，且能达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供一种第一网络侧设备，包括处理器和通信接口，通信接口用于向第二网络侧设备发送切换请求消息；其中，所述第一网络侧设备为条件切换的源节点，所述第二网络侧设备为条件切换的目标节点，所述切换请求消息用于所述源节点请求所述目标节点为条件切换准备资源；接收来自于所述第二网络侧设备的切换请求确认消息，所述切换请求确认消息用于所述目标节点向所述源节点通知准备的资源，所述切换请求确认消息包括CPAC信息。
本申请实施例还提供一种第二网络侧设备，包括处理器和通信接口，所述通信接口用于接收来自于第一网络侧设备的切换请求消息；其中，所述第一网络侧设备为条件切换的源节点，所述第二网络侧设备为条件切换的目标节点，所述切换请求消息用于所述源节点请求所述目标节点为条件切换准备资源；向所述第一网络侧设备发送切换请求确认消息，所述切换请求确认消息用于所述目标节点向所述源节点通知准备的资源，所述切换请求确认消息包括CPAC信息。
该网络侧设备(如第一网络侧设备或第二网络侧设备)实施例与上述网络侧设备方法实施例对应，上述方法实施例的各个实施过程和实现方式均可适用于该网络侧设备实施例中，且能达到相同的技术效果。
具体地，本申请实施例还提供了一种网络侧设备。如图10所示，该网络侧设备1000包括：天线101、射频装置102、基带装置103、处理器104和存储器105。天线101与射频装置102连接。在上行方向上，射频装置102通过天线101接收信息，将接收的信息发送给基带装置103进行处理。在下行方向上，基带装置103对要发送的信息进行处理，并发送给射频装置102，射频装置102对收到的信息进行处理后经过天线101发送出去。
以上实施例中网络侧设备执行的方法可以在基带装置103中实现，该基带装置103包括基带处理器。
基带装置103例如可以包括至少一个基带板，该基带板上设置有多个芯片，如图10所示，其中一个芯片例如为基带处理器，通过总线接口与存储器105连接，以调用存储器105中的程序，执行以上方法实施例中所示的网络设备操作。
该网络侧设备还可以包括网络接口106，该接口例如为通用公共无线接口(common  public radio interface，CPRI)。
具体地，本发明实施例的网络侧设备1000还包括：存储在存储器105上并可在处理器104上运行的指令或程序，处理器104调用存储器105中的指令或程序执行图7或图8所示各模块执行的方法，并达到相同的技术效果，为避免重复，故不在此赘述。
本申请实施例还提供一种可读存储介质，所述可读存储介质上存储有程序或指令，该程序或指令被处理器执行时实现上述条件切换方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
其中，所述处理器为上述实施例中所述的终端中的处理器。所述可读存储介质，包括计算机可读存储介质，如计算机只读存储器(Read Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等。
本申请实施例另提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现上述条件切换方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
本申请实施例另提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现上述条件切换方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供了一种条件切换系统，包括：终端及网络侧设备，所述终端可用于执行如上所述的条件切换方法的步骤，所述网络侧设备可用于执行如上所述的条件切换方法的步骤。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去、或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以计算机软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算 机，服务器，空调器，或者网络设备等)执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (28)

  1. 一种条件切换方法，其中，包括：
    第一网络侧设备向第二网络侧设备发送切换请求消息；其中，所述第一网络侧设备为条件切换的源节点，所述第二网络侧设备为条件切换的目标节点，所述切换请求消息用于所述源节点请求所述目标节点为条件切换准备资源；
    所述第一网络侧设备接收来自于所述第二网络侧设备的切换请求确认消息，所述切换请求确认消息用于所述目标节点向所述源节点通知准备的资源，所述切换请求确认消息包括条件主辅小区添加或变更CPAC信息。
  2. 根据权利要求1所述的方法，其中，所述CPAC信息包括以下至少一项：
    CPAC候选小区信息；
    CPAC相关的测量需求信息；
    CPAC条件重配置标识信息，所述CPAC条件重配置标识信息包括所述第二网络侧设备准备的至少一个CPAC候选小区对应的条件重配置标识；
    CPAC条件重配置信息，所述CPAC条件重配置信息包括以下至少一项：条件重配置标识；执行条件；无线资源控制RRC重配置。
  3. 根据权利要求2所述的方法，其中，所述CPAC候选小区信息包括以下至少一项：频点信息；物理小区标识；小区组配置。
  4. 根据权利要求2所述的方法，其中，所述CPAC相关的测量需求信息包括以下至少一项：
    测量对象，所述测量对象包含测量CPAC候选小区的频点的信息；
    测量报告配置；
    条件触发配置，所述条件触发配置包括CPAC候选小区的执行条件对应的测量事件配置；
    测量标识ID的配置，所述测量ID所关联的测量配置包括以下至少一项：主小区组MCG测量配置，辅小区组SCG测量配置，目标MCG测量配置。
  5. 根据权利要求4所述的方法，其中，所述测量ID所关联的测量配置为所述MCG测量配置，所述方法还包括：
    所述第一网络侧设备向终端发送RRC重配置消息，所述RRC重配置消息包括所述MCG测量配置，所述MCG测量配置包括CPAC候选小区相关的测量信息。
  6. 根据权利要求1至4任一项所述的方法，其中，所述第一网络侧设备接收来自于所述第二网络侧设备的切换请求确认消息之后，所述方法还包括：
    所述第一网络侧设备向第三网络侧设备发送所述CPAC信息，所述第三网络侧设备为条件切换的源辅节点；
    所述第一网络侧设备接收来自于所述第三网络侧设备的SCG测量配置，所述SCG测量配置包括CPAC候选小区的测量信息。
  7. 根据权利要求6所述的方法，其中，满足以下至少一项：
    如果所述切换请求确认消息包括所述CPAC信息，则所述第一网络侧设备向第三网络侧设备发送所述CPAC信息；
    所述第一网络侧设备发送的所述CPAC信息由辅节点修改请求消息承载。
  8. 根据权利要求6所述的方法，其中，所述方法还包括：
    所述第一网络侧设备向终端发送RRC重配置消息，所述RRC重配置消息包括所述SCG测量配置，所述SCG测量配置包括CPAC候选小区相关的测量信息。
  9. 根据权利要求1至4任一项所述的方法，其中，所述切换请求消息包括以下至少一项：
    用于指示发起带CPAC或多无线接入技术双连接MR-DC的条件切换的指示信息；
    用于指示支持CPAC的指示信息；
    用于指示支持MR-DC的指示信息；
    用于指示支持多个SCG候选小区的指示信息；
    允许所述第二网络侧设备添加的以下至少之一的最大数量：CPAC候选辅节点SN，候选主辅小区，候选小区；
    允许所述第二网络侧设备添加的条件重配置标识范围；
    所述第一网络设备为终端配置的测量配置信息；
    测量结果；
    所述第一网络设备建议所述第二网络设备考虑配置的一个或多个CPAC候选小区信息。
  10. 根据权利要求9所述的方法，其中，所述CPAC候选目标小区信息包括以下至少一项：
    频点信息；
    物理小区标识；
    执行条件；其中，所述执行条件中指示的测量ID为MCG测量配置或SCG测量配置中的测量ID。
  11. 根据权利要求1所述的方法，其中，所述切换请求确认消息还包括指示信息，所述指示信息用于指示所述切换请求确认消息中CHO候选小区包含至少一个CPAC候选小区。
  12. 根据权利要求11所述的方法，其中，所述指示信息包括以下至少一项：
    伴随CPAC的CHO指示，所述伴随CPAC的CHO指示用于指示所述第二网络侧设备配置有CPAC候选小区；
    至少一个目标主辅小区标识，所述目标主辅小区标识用于指示终端的目标主小区配置有CPAC候选小区；
    至少一个CHO条件重配置标识信息，所述CHO条件重配置标识信息用于指示所述 CHO条件重配置标识对应的目标主小区配置包含至少一个CPAC候选小区。
  13. 根据权利要求12所述的方法，其中，所述方法还包括：
    所述第一网络侧设备向终端发送RRC重配置消息，所述RRC重配置消息包括CHO候选小区的条件重配置信息，所述CHO候选小区的条件重配置信息包括以下至少一项：
    CPAC候选小区的执行条件，所述执行条件中指示的测量ID为目标MCG测量配置中的测量ID；
    CPAC候选小区的条件重配置标识；
    CPAC指示信息，所述CPAC指示信息用于指示所述CHO候选小区的配置中包含至少一个CPAC候选小区。
  14. 根据权利要求13所述的方法，其中，
    所述RRC重配置消息中，CHO候选小区对应的RRC重配置消息包括目标MCG测量配置，所述目标MCG测量配置包括CPAC候选小区相关的测量信息。
  15. 一种条件切换方法，其中，包括：
    第二网络侧设备接收来自于第一网络侧设备的切换请求消息；其中，所述第一网络侧设备为条件切换的源节点，所述第二网络侧设备为条件切换的目标节点，所述切换请求消息用于所述源节点请求所述目标节点为条件切换准备资源；
    所述第二网络侧设备向所述第一网络侧设备发送切换请求确认消息，所述切换请求确认消息用于所述目标节点向所述源节点通知准备的资源，所述切换请求确认消息包括CPAC信息。
  16. 根据权利要求15所述的方法，其中，所述CPAC信息包括以下至少一项：
    CPAC候选小区信息；
    CPAC相关的测量需求信息；
    CPAC条件重配置标识信息，所述CPAC条件重配置标识信息包括所述第二网络侧设备准备的至少一个CPAC候选小区对应的条件重配置标识；
    CPAC条件重配置信息，所述CPAC条件重配置信息包括以下至少一项：条件重配置标识；执行条件；RRC重配置。
  17. 根据权利要求16所述的方法，其中，所述CPAC相关的测量需求信息包括以下至少一项：
    测量对象，所述测量对象包含测量CPAC候选小区的频点的信息；
    测量报告配置；
    条件触发配置，所述条件触发配置包括CPAC候选小区的执行条件对应的测量事件配置；
    测量ID的配置，所述测量ID所关联的测量配置包括以下至少一项：MCG测量配置，SCG测量配置，目标MCG测量配置。
  18. 根据权利要求17所述的方法，其中，所述测量ID所关联的测量配置为所述MCG 测量配置，
    所述方法还包括：所述第二网络侧设备发起CPAC；和/或
    所述切换请求确认消息包括所述CPAC候选小区信息。
  19. 根据权利要求15至17任一项所述的方法，其中，所述切换请求消息包括以下至少一项：
    用于指示发起带CPAC或MR-DC的条件切换的指示信息；
    用于指示支持CPAC的指示信息；
    用于指示支持MR-DC的指示信息；
    用于指示支持多个SCG候选小区的指示信息；
    允许所述第二网络侧设备添加的以下至少之一的最大数量：CPAC候选SN，候选主辅小区，候选小区；
    允许所述第二网络侧设备添加的条件重配置标识范围；
    所述第一网络设备为终端配置的测量配置信息；
    测量结果；
    所述第一网络设备建议所述第二网络设备考虑配置的一个或多个CPAC候选小区信息。
  20. 根据权利要求19所述的方法，其中，所述方法还包括：所述第二网络侧设备向第四网络侧设备发送辅节点添加请求消息，所述第四网络侧设备为条件切换的目标辅节点；
    其中，所述第二网络设备在考虑CPAC候选小区时，仅考虑所述切换请求消息中所述第一网络设备建议的一个或多个CPC候选目标小区；或者，
    所述辅节点添加请求消息中包含所述第一网络侧设备发送的CPAC信息；或者，
    所述第二网络设备在考虑CPAC候选小区时，仅考虑所述切换请求消息中所述第一网络设备为终端配置的测量配置信息中包含的频点和/或小区；或者，
    所述第二网络设备在考虑CPAC候选小区时，仅考虑所述切换请求消息中测量结果中包含的频点和/或小区。
  21. 根据权利要求15所述的方法，其中，所述切换请求确认消息还包括指示信息，所述指示信息用于指示所述切换请求确认消息中CHO候选小区包含至少一个CPAC候选小区。
  22. 根据权利要求21所述的方法，其中，所述指示信息包括以下至少一项：
    伴随CPAC的CHO指示，所述伴随CPAC的CHO指示用于指示所述第二网络侧设备配置有CPAC候选小区；
    至少一个目标主辅小区标识，所述目标主辅小区标识用于指示终端的目标主小区配置有CPAC候选小区；
    至少一个CHO条件重配置标识信息，所述CHO条件重配置标识信息用于指示所述CHO条件重配置标识对应的目标主小区配置包含至少一个CPAC候选小区。
  23. 根据权利要求21所述的方法，其中，所述方法还包括：
    所述第二网络侧设备向第四网络侧设备发送辅节点添加请求消息，所述第四网络侧设备为条件切换的目标辅节点；
    所述第二网络侧设备接收来自于所述第四网络侧设备的辅节点添加确认信息。
  24. 根据权利要求23所述的方法，其中，所述方法还包括：如果所述辅节点添加确认信息中包含至少一个接受的CPAC候选小区，所述第二网络侧设备执行如下之一：
    在CHO候选小区对应的RRC重配置中包含所述接受的CPAC候选小区的测量配置；
    所述第二网络侧设备通知第四网络侧设备在CHO候选小区对应的目标主辅小区的RRC重配置中包含所述接受的CPAC候选小区的测量配置。
  25. 一种第一网络侧设备，其中，包括：
    发送模块，用于向第二网络侧设备发送切换请求消息；其中，所述第一网络侧设备为条件切换的源节点，所述第二网络侧设备为条件切换的目标节点，所述切换请求消息用于所述源节点请求所述目标节点为条件切换准备资源；
    接收模块，用于接收来自于所述第二网络侧设备的切换请求确认消息，所述切换请求确认消息用于所述目标节点向所述源节点通知准备的资源，所述切换请求确认消息包括CPAC信息。
  26. 一种第二网络侧设备，其中，包括：
    接收模块，用于接收来自于第一网络侧设备的切换请求消息；其中，所述第一网络侧设备为条件切换的源节点，所述第二网络侧设备为条件切换的目标节点，所述切换请求消息用于所述源节点请求所述目标节点为条件切换准备资源；
    发送模块，用于向所述第一网络侧设备发送切换请求确认消息，所述切换请求确认消息用于所述目标节点向所述源节点通知准备的资源，所述切换请求确认消息包括CPAC信息。
  27. 一种网络侧设备，其中，包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如权利要求1至24任一项所述的方法的步骤。
  28. 一种可读存储介质，其中，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如权利要求1至24任一项所述的方法的步骤。
PCT/CN2023/089156 2022-04-22 2023-04-19 条件切换方法及网络侧设备 WO2023202605A1 (zh)

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CN113784401A (zh) * 2020-06-10 2021-12-10 中国移动通信有限公司研究院 信息发送方法、接收方法及设备
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