WO2021179911A1 - 通信方法及装置 - Google Patents

通信方法及装置 Download PDF

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Publication number
WO2021179911A1
WO2021179911A1 PCT/CN2021/077851 CN2021077851W WO2021179911A1 WO 2021179911 A1 WO2021179911 A1 WO 2021179911A1 CN 2021077851 W CN2021077851 W CN 2021077851W WO 2021179911 A1 WO2021179911 A1 WO 2021179911A1
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WO
WIPO (PCT)
Prior art keywords
pscell
configuration information
candidate
list
terminal
Prior art date
Application number
PCT/CN2021/077851
Other languages
English (en)
French (fr)
Inventor
孙慧明
胡星星
张宏平
耿婷婷
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP21767239.3A priority Critical patent/EP4099749A4/en
Publication of WO2021179911A1 publication Critical patent/WO2021179911A1/zh
Priority to US17/939,456 priority patent/US20230007552A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • 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
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00835—Determination of neighbour cell lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control
    • H04W36/36—Reselection control by user or terminal equipment
    • H04W36/362—Conditional handover

Definitions

  • the embodiments of the present application relate to the field of wireless communication, and in particular, to a communication method and device.
  • DC can support two or more base stations to provide data transmission services for one terminal at the same time.
  • These base stations include a primary base station and one or more secondary base stations.
  • the primary base station can establish a radio resource control (Radio Resource Control, RRC) connection with the terminal, and can transmit RRC messages with the terminal, and the primary base station can also establish a control plane connection with the core network.
  • RRC Radio Resource Control
  • the secondary base station may transmit part of the RRC message with the terminal, and the part of the RRC message includes measurement configuration information or measurement report for measuring the signal quality of the cell.
  • the terminal After establishing an RRC connection with the primary base station, the terminal can perform conditional PSCell addition (CPA) to establish a connection with the secondary base station. After the terminal establishes a connection with the primary base station and the secondary base station, it can also perform a conditional PSCell change (CPC) to change the PSCell connected to the terminal.
  • CPC conditional PSCell change
  • CPAC conditional PSCell addition/change
  • the embodiments of the present application provide a communication method and device, which can reduce the air interface overhead of the target primary base station and the terminal for CPAC after the terminal performs the handover of the primary base station.
  • an embodiment of the present application provides a communication method, the method includes: a terminal receives a first message from a first master node, the first message includes the identity of the first candidate PSCell, or the configuration information of the first candidate PSCell
  • the first candidate PSCell is included in the first PSCell list and also included in the second PSCell list; or the first message includes the incremental configuration information of the candidate PSCell in the second PSCell list; wherein, the first candidate PSCell’s
  • the configuration information includes the addition/change conditions and configuration of the first candidate PSCell, the first PSCell list includes one or more candidate PSCells configured by the first master node for the terminal, and the second PSCell list includes the second master node One or more candidate PSCells configured by the terminal; the terminal adds a target PSCell or changes from the original PSCell to the target PSCell according to the first message and first configuration information, and the first configuration information includes candidates in the first PSCell list PSCell addition/change conditions and configuration, the target
  • the terminal may receive the first message from the first master node, and add the target PSCell or change the target PSCell from the original PSCell according to the first message and the first configuration information, where the first message includes The size of the identifier or information is smaller than the size of the configuration information of the candidate PSCell in the second PSCell list, and therefore, the air interface overhead of the CPAC between the second master node and the terminal can be reduced.
  • the incremental configuration information includes different configuration information in the configuration information of the same candidate PSCell configured by the second master node and the first master node for the terminal, and /Or, the configuration information of each candidate PSCell in the second PSCell list except the first PSCell, and/or the configuration information of the candidate PSCells in the first PSCell list determined to be released by the second master node Logo.
  • the first message may not include the full configuration information of the candidate PSCells in the second PSCell list, but may include the above incremental configuration information. Therefore, the air interface overhead of the CPAC between the second master node and the terminal can be reduced.
  • the terminal adds the target PSCell or changes the target PSCell from the original PSCell according to the first message and the first configuration information, including: the terminal according to The first message and the first configuration information determine second configuration information.
  • the second configuration information includes addition/change conditions and configurations of candidate PSCells in the second PSCell list; the terminal determines the second configuration information according to the second configuration information.
  • a PSCell that meets the addition/change condition of the candidate PSCell is added as the target PSCell, or is changed from the original PSCell to the target PSCell.
  • the terminal can restore the second configuration information according to the first message and the first configuration information, and add PSCells that meet the candidate PSCell addition conditions according to the second configuration information; or change from the original PSCell to the change that meets the candidate PSCell Conditional PSCell, in this way, the first master node does not need to send the second configuration information to the terminal, which reduces the air interface overhead for the second master node to perform CPAC with the terminal.
  • the first message includes the incremental configuration information of the candidate PSCells in the second PSCell list, and the terminal is configured according to the first message and the first configuration.
  • the information determining the second configuration information includes: the terminal determines the second configuration information according to the incremental configuration information and the first configuration information. Based on the above method, the terminal can restore the second configuration information according to the incremental configuration information and the first configuration information. In this way, the first master node does not need to send the second configuration information to the terminal, which reduces the CPAC between the second master node and the terminal. Air interface overhead.
  • the first message includes the identification of the first candidate PSCell or the identification of the configuration information of the first candidate PSCell, and the terminal is based on the identification of the first candidate PSCell.
  • a message and the first configuration information determine the second configuration information, including: the terminal determines that the first configuration information corresponding to the identifier of the first candidate PSCell or the identifier of the configuration information of the first candidate PSCell is the second Configuration information.
  • the terminal may identify the identity of the first PSCell candidate or the configuration information of the first PSCell candidate.
  • the first configuration information corresponding to the identifier is determined to be the second configuration information. In this way, the first master node does not need to send the second configuration information to the terminal, which reduces the air interface overhead for the second master node to perform CPAC with the terminal.
  • the first configuration information further includes configuration information of the original PSCell
  • the incremental configuration information includes any candidate in the second PSCell list Different configuration information in the configuration information of the PSCell and the original PSCell.
  • the first message may not include the full configuration information of the candidate PSCells in the second PSCell list, but may include the above incremental configuration information. Therefore, the air interface overhead of the CPAC between the second master node and the terminal can be reduced.
  • an embodiment of the present application provides a communication method.
  • the method includes: a first master node sends a first message to a second master node, where the first message is used to indicate a first configuration of a candidate PSCell in the first PSCell list Information, the first configuration information includes addition/change conditions and configurations of candidate PSCells in the first PSCell list, the first PSCell list includes one or more candidate PSCells configured by the first master node for the terminal, and the second master node
  • the node is the target master node for the terminal handover;
  • the first master node receives a second message from the second master node, the second message is obtained according to the first message, and the second message includes the information of the first candidate PSCell ID, or ID of the configuration information of the first candidate PSCell, the first candidate PSCell is included in the first PSCell list, and is included in the second PSCell list; or the second message includes the candidate PSCells in the second PSCell list
  • the first master node may send the first message for indicating the first configuration information of the candidate PSCells in the first PSCell list to the second master node, and receive the second message from the second master node , wherein the size of the identifier or information included in the second message is smaller than the size of the configuration information of the candidate PSCell in the second PSCell list, so the communication overhead of the first master node and the second master node can be reduced.
  • the incremental configuration information includes different configuration information in the configuration information of the same candidate PSCell configured by the second master node and the first master node for the terminal, and /Or, the configuration information of each candidate PSCell in the second PSCell list except the first candidate PScell, and/or, the configuration information of the candidate PSCells in the first PSCell list determined by the second master node to be released Logo.
  • the second message may not include the full configuration information of the candidate PSCells in the second PSCell list, but may include the above incremental configuration information. Therefore, the communication overhead of the first master node and the second master node can be reduced.
  • the method further includes: the first master node sends a first release request message to the node to which each candidate PSCell in the first PSCell list belongs, The first release request message is used to request the release of each candidate PSCell in the first PSCell list.
  • the first master node determines that the terminal is to be handed over to the second master node, it can instruct the node to which each candidate PSCell in the first PSCell list belongs to release the candidate PSCell configured for the terminal through the first master node.
  • the first The node to which each candidate PSCell in the PSCell list belongs can configure the released candidate PSCell to other terminals, which saves communication resources.
  • the first release request message is also used to indicate to which the first candidate PSCell belongs
  • the node retains the context with the terminal.
  • the second master node configures the first candidate PSCell as the candidate PSCell of the terminal
  • the first candidate secondary node does not need to regenerate the context with the terminal.
  • the first candidate PSCell is determined as the target PSCell
  • the first candidate The secondary node can communicate with the terminal through the reserved context.
  • the first message includes configuration information of candidate PSCells in the first PSCell list; or, the first message includes the configuration information of candidate PSCells in the first PSCell list.
  • the first master node can use the configuration information of the candidate PSCell in the first PSCell list; or, the identification of the candidate PSCell in the first PSCell list; or, the identification of the secondary cell group to which the candidate PSCell belongs in the first PSCell list.
  • the first configuration information of candidate PSCells in the PSCell list increases the diversity of the first configuration information of the candidate PSCells in the first PSCell list indicated by the first master node.
  • the first message further includes the identity of the original PSCell, and the original PSCell is the terminal handing over from the first master node to the second master node Previously, the PSCell that the terminal was connected to.
  • the first master node may also indicate the original PSCell to the second master node, so that the second master node determines to add the original PSCell to the terminal or add other PSCells.
  • the incremental configuration information includes configuration information of any candidate PSCell in the second PSCell list that is different from the configuration information of the original PSCell .
  • the second message may not include the full configuration information of the candidate PSCells in the second PSCell list, but may include the above incremental configuration information. Therefore, the communication overhead of the first master node and the second master node can be reduced.
  • an embodiment of the present application provides a communication method, the method includes: a second master node receives a first message from a first master node, the first message is used to indicate the first PSCell candidate in the first PSCell list Configuration information.
  • the first configuration information includes addition/change conditions and configurations of candidate PSCells in the first PSCell list.
  • the first PSCell list includes one or more candidate PSCells configured by the first master node for the terminal.
  • the second master node is the target master node for the terminal handover; the second master node determines according to the first message that the first master node configures the conditional PSCell addition/change function for the terminal, and sends the second master node to the first master node Message, the second message includes the identity of the first candidate PSCell, or the identity of the configuration information of the first candidate PSCell, the first candidate PSCell is included in the first PSCell list, and is included in the second PSCell list; or The second message includes the incremental configuration information of the PSCell candidate in the second PSCell list, the configuration information of the first PSCell candidate includes the addition/change condition and configuration of the first PSCell candidate, and the second PSCell list includes the second master node One or more candidate PSCells configured for the terminal.
  • the second master node may determine that the first master node configures the terminal after receiving the first message from the first master node that is used to indicate the first configuration information of the candidate PSCells in the first PSCell list
  • the conditional PSCell addition/change function is implemented, and a second message is sent to the first master node, where the size of the identification or information included in the second message is smaller than the size of the configuration information of the candidate PSCell in the second PSCell list. Therefore, you can Reduce the communication overhead between the second master node and the first master node.
  • the incremental configuration information includes different configuration information in the configuration information of the same candidate PSCell configured by the second master node and the first master node for the terminal, and Configuration information of each candidate PSCell in the second PSCell list except for the first PSCell, and/or, the second master node determines to release the identifier of the configuration information of the candidate PSCell in the first PSCell list.
  • the second message may not include the full configuration information of the candidate PSCells in the second PSCell list, but may include the above incremental configuration information. Therefore, the communication overhead of the first master node and the second master node can be reduced.
  • the first message includes configuration information of candidate PSCells in the first PSCell list; or, the first message includes the configuration information of candidate PSCells in the first PSCell list.
  • the second master node can determine the first configuration information of the candidate PSCell in the first PSCell list based on the configuration information of the candidate PSCell in the first PSCell list, so that the second master node can determine the first configuration information of the candidate PSCell in the first PSCell list according to the first PSCell candidate in the first PSCell list.
  • the configuration information determines the configuration information of the candidate PSCell in the second PSCell list; or, the second master node may determine the first PSCell according to the identification of the candidate PSCell in the first PSCell list; or, the identification of the secondary cell group to which the candidate PSCell belongs in the first PSCell list.
  • the first message further includes the identity of the original PSCell
  • the original PSCell is the terminal handing over from the first master node to the second master node Previously, the PSCell that the terminal was connected to.
  • the second master node may determine that the first master node added the original PSCell to the terminal through the identification of the original PSCell in the first message, and subsequently, the second master node may add the original PSCell to the terminal or add other PSCells.
  • the incremental configuration information includes configuration information that is different between any candidate PSCell in the second PSCell list and the configuration information of the original PSCell.
  • the second message may not include the full configuration information of the candidate PSCells in the second PSCell list, but may include the above incremental configuration information. Therefore, the communication overhead of the first master node and the second master node can be reduced.
  • an embodiment of the present application provides a communication method, the method includes: a first candidate secondary node receives a first release request message from a first master node, the first release request message is used to request the release of the first candidate
  • the secondary node is a candidate PSCell configured by the first primary node, and is used to instruct the first candidate secondary node to retain the context with the terminal, and the first candidate secondary node is included in both the first PSCell list and the second PSCell
  • the first candidate secondary node can release the PSCell configured by the first candidate secondary node for the first primary node after receiving the first release request message from the first primary node.
  • the first candidate secondary node The released PSCell can be configured to other terminals, saving communication resources.
  • the first release request message includes the identity of the first candidate secondary node or the identity of the PSCell of the first candidate secondary node.
  • the first candidate secondary node may release the PSCell configured by the first candidate secondary node for the first primary node according to the identity of the first candidate secondary node or the identity of the PSCell of the first candidate secondary node.
  • an embodiment of the present application provides a communication device, which can implement the foregoing first aspect or the method in any possible implementation manner of the first aspect.
  • the device includes corresponding units or components for performing the above-mentioned methods.
  • the units included in the device can be implemented in software and/or hardware.
  • the device may be, for example, a terminal, or a chip, a chip system, or a processor that can support the terminal to implement the foregoing method.
  • an embodiment of the present application provides a communication device, which can implement the foregoing second aspect or the method in any possible implementation manner of the second aspect.
  • the device includes corresponding units or components for performing the above-mentioned methods.
  • the units included in the device can be implemented in software and/or hardware.
  • the device may be, for example, a network device, or a chip, a chip system, or a processor that can support the network device to implement the foregoing method.
  • an embodiment of the present application provides a communication device that can implement the foregoing third aspect or the method in any possible implementation manner of the third aspect.
  • the device includes corresponding units or components for performing the above-mentioned methods.
  • the units included in the device can be implemented in software and/or hardware.
  • the device may be, for example, a terminal, or a chip, a chip system, or a processor that can support the terminal to implement the foregoing method.
  • an embodiment of the present application provides a communication device that can implement the foregoing fourth aspect or the method in any possible implementation manner of the fourth aspect.
  • the device includes corresponding units or components for performing the above-mentioned methods.
  • the units included in the device can be implemented in software and/or hardware.
  • the device may be, for example, a network device, or a chip, a chip system, or a processor that can support the network device to implement the foregoing method.
  • an embodiment of the present application provides a communication device, including: a processor, the processor is coupled with a memory, the memory is used to store a program or an instruction, when the program or an instruction is executed by the processor , So that the device implements the method described in the foregoing first aspect or any one of the possible implementation manners of the first aspect.
  • an embodiment of the present application provides a communication device, including: a processor, the processor is coupled with a memory, the memory is used to store a program or an instruction, when the program or an instruction is executed by the processor , So that the device implements the method described in the second aspect or any one of the possible implementation manners of the second aspect.
  • an embodiment of the present application provides a communication device, including: a processor, the processor is coupled with a memory, the memory is used to store a program or instruction, when the program or instruction is executed by the processor At this time, the device is made to implement the method described in the foregoing third aspect or any one of the possible implementation manners of the third aspect.
  • an embodiment of the present application provides a communication device, including: a processor, the processor is coupled with a memory, the memory is used to store a program or instruction, when the program or instruction is executed by the processor At this time, the device is made to implement the foregoing fourth aspect or the method described in any one of the possible implementation manners of the fourth aspect.
  • an embodiment of the present application provides a communication device, which is configured to implement the foregoing first aspect or the method described in any one of the possible implementation manners of the first aspect.
  • an embodiment of the present application provides a communication device, which is configured to implement the foregoing second aspect or the method described in any one of the possible implementation manners of the second aspect.
  • an embodiment of the present application provides a communication device, which is configured to implement the foregoing third aspect or the method described in any one of the possible implementation manners of the third aspect.
  • an embodiment of the present application provides a communication device, which is configured to implement the foregoing fourth aspect or the method described in any one of the possible implementation manners of the fourth aspect.
  • an embodiment of the present application provides a computer-readable medium on which a computer program or instruction is stored.
  • the computer program or instruction When the computer program or instruction is executed, the computer executes the first aspect or any one of the first aspect.
  • an embodiment of the present application provides a computer-readable medium on which a computer program or instruction is stored, and when the computer program or instruction is executed, the computer executes the second aspect or any one of the second aspect described above.
  • an embodiment of the present application provides a computer-readable medium on which a computer program or instruction is stored, and when the computer program or instruction is executed, the computer executes the third aspect or any one of the third aspects.
  • an embodiment of the present application provides a computer-readable medium on which a computer program or instruction is stored.
  • the computer program or instruction When executed, the computer executes the fourth aspect or any one of the fourth aspect.
  • an embodiment of the present application provides a computer program product, which includes computer program code that, when run on a computer, causes the computer to execute the first aspect or any of the first aspects. The method described in the embodiment.
  • an embodiment of the present application provides a computer program product, which includes computer program code, which, when run on a computer, causes the computer to execute the second aspect or any of the second aspects described above. The method described in the embodiment.
  • an embodiment of the present application provides a computer program product, which includes computer program code, which, when run on a computer, causes the computer to execute the third aspect or any of the third aspects described above. The method described in the embodiment.
  • an embodiment of the present application provides a computer program product, which includes computer program code, which, when run on a computer, causes the computer to execute the fourth aspect or any one of the fourth aspects. The method described in the embodiment.
  • an embodiment of the present application provides a chip, including: a processor, the processor is coupled with a memory, the memory is used to store a program or an instruction, when the program or instruction is executed by the processor At this time, the chip is made to implement the method described in the foregoing first aspect or any one of the possible implementation manners of the first aspect.
  • an embodiment of the present application provides a chip, including: a processor, the processor is coupled with a memory, the memory is used to store a program or instruction, when the program or instruction is executed by the processor At this time, the chip is made to implement the method described in the foregoing second aspect or any one of the possible implementation manners of the second aspect.
  • an embodiment of the present application provides a chip, including: a processor, the processor is coupled with a memory, the memory is used to store a program or an instruction, when the program or instruction is executed by the processor At this time, the chip is made to implement the method described in the foregoing third aspect or any one of the possible implementation manners of the third aspect.
  • an embodiment of the present application provides a chip, including: a processor, the processor is coupled with a memory, the memory is used to store a program or an instruction, when the program or instruction is executed by the processor At this time, the chip is made to implement the foregoing fourth aspect or the method described in any one of the possible implementation manners of the fourth aspect.
  • an embodiment of the present application provides a communication system.
  • the system includes the device described in the fifth aspect, and/or the device described in the sixth aspect, and/or the device described in the seventh aspect, and/or the device described in the eighth aspect, or
  • the system includes the device described in the aforementioned ninth aspect, and/or the device described in the aforementioned tenth aspect, and/or the device described in the aforementioned eleventh aspect, and/or the device described in the aforementioned twelfth aspect, or
  • the system includes the device described in the thirteenth aspect above, and/or the device described in the fourteenth aspect above, and/or the device described in the fifteenth aspect above, and/or the device described in the sixteenth aspect above Device.
  • any communication device, chip, computer readable medium, computer program product, or communication system provided above are all used to execute the corresponding method provided above, and therefore, the beneficial effects that can be achieved can be Refer to the beneficial effects in the corresponding method, which will not be repeated here.
  • an embodiment of the present application provides a communication method.
  • the method includes: a terminal obtains first configuration information of a target PSCell, where the first configuration information includes that when the master node configures the target PSCell as a candidate PSCell of the terminal, the Configuration information of the target PSCell; the terminal receives the first message from the master node, the first message includes the identity of the target PSCell or the identity of the secondary cell group to which the target PSCell belongs; the terminal according to the first message and the first message A configuration information determines the second configuration information of the target PSCell.
  • the second configuration information includes the configuration information of the target PSCell when the master node determines that the target PSCell is the PSCell of the terminal; the terminal and the terminal according to the second configuration information
  • the secondary node to which the target PSCell belongs establishes a connection.
  • the terminal can obtain the first configuration information of the target PSCell.
  • the terminal When receiving the first message from the autonomous node, it knows that the master node has added the target PSCell to itself, and the terminal can determine through the identifier in the first message And apply the second configuration information of the target PSCell.
  • the first message further includes the incremental configuration of the target PSCell, and the incremental configuration includes the first configuration information.
  • the first message can include the incremental configuration of the target PSCell instead of the full configuration of the target PSCell. In this way, the air interface between the master node and the terminal can be reduced. Overhead.
  • an embodiment of the present application provides a communication method.
  • the method includes: a master node sends first configuration information of a target PSCell to a terminal, where the first configuration information includes that the master node configures the target PSCell as the terminal's When a candidate PSCell, the configuration information of the target PSCell; the master node sends a first message to the terminal, the first message includes the identity of the target PSCell or the identity of the secondary node to which the target PSCell belongs, and the first message is used to communicate with the first message
  • a configuration information determines second configuration information of the target PSCell, and the second configuration information includes configuration information of the target PSCell when the master node determines that the target PSCell is the PSCell of the terminal.
  • the master node may send the first configuration information of the target PSCell to the terminal, and after adding the target PSCell to the terminal, send the first message to the terminal, so that the terminal can determine the target through the identifier in the first message And apply the second configuration information of the PSCell.
  • the first message further includes the incremental configuration of the target PSCell, and the incremental configuration includes the first configuration information.
  • the first message can include the incremental configuration of the target PSCell instead of the full configuration of the target PSCell. In this way, the air interface between the master node and the terminal can be reduced. Overhead.
  • an embodiment of the present application provides a communication device that includes: a processing unit and a receiving unit; the processing unit is configured to obtain first configuration information of a target PSCell, where the first configuration information includes a master node When the target PSCell is configured as a candidate PSCell of the terminal, the configuration information of the target PSCell; the receiving unit is configured to receive a first message from the master node, the first message including the identity of the target PSCell or the target PSCell to which it belongs The identification of the secondary cell group; the processing unit is further configured to determine second configuration information of the target PSCell according to the first message and the first configuration information, where the second configuration information includes the master node determining that the target PSCell is the When the PSCell of the terminal is configured, the configuration information of the target PSCell; the processing unit is further configured to establish a connection with the secondary node to which the target PSCell belongs according to the second configuration information.
  • the first message further includes the incremental configuration of the target PSCell, and the incremental configuration includes the first configuration information.
  • Configuration information in the configuration information that is different from the configuration information in the second configuration information.
  • an embodiment of the present application provides a communication device, the communication device includes: a sending unit; the sending unit is configured to send first configuration information of a target PSCell to a terminal, where the first configuration information includes the master node When configuring the target PSCell as a candidate PSCell of the terminal, the configuration information of the target PSCell; the sending unit is also used to send a first message to the terminal, the first message including the identifier of the target PSCell or the secondary node to which the target PSCell belongs The first message is used to determine the second configuration information of the target PSCell with the first configuration information, and the second configuration information includes the configuration of the target PSCell when the master node determines that the target PSCell is the PSCell of the terminal information.
  • the first message further includes the incremental configuration of the target PSCell, and the incremental configuration includes the first configuration information.
  • Configuration information in the configuration information that is different from the configuration information in the second configuration information.
  • an embodiment of the present application provides a communication device, including a processor, the processor is coupled with a memory, and the memory is used to store a program or instruction. When executed, the device is made to implement the method described in the thirtieth aspect or any one of the possible implementation manners of the thirtieth aspect.
  • an embodiment of the present application provides a communication device, including a processor, the processor is coupled with a memory, and the memory is used to store a program or instruction. When executed, the device is caused to implement the method described in the foregoing thirty-first aspect or any one of the possible implementation manners of the thirty-first aspect.
  • an embodiment of the present application provides a communication device, which is configured to implement the above-mentioned thirtieth aspect or the method described in any one of the possible implementation manners of the thirtieth aspect.
  • an embodiment of the present application provides a communication device, which is configured to implement the foregoing thirty-first aspect or the method described in any one of the possible implementation manners of the thirty-first aspect.
  • an embodiment of the present application provides a computer-readable medium on which a computer program or instruction is stored.
  • the computer program or instruction executes the thirtieth aspect or the thirtieth aspect. Any of the methods described in the possible implementations.
  • an embodiment of the present application provides a computer-readable medium on which a computer program or instruction is stored.
  • the computer program or instruction When the computer program or instruction is executed, the computer executes the thirty-first aspect or the thirtieth aspect.
  • the method described in any possible implementation manner On the one hand, the method described in any possible implementation manner.
  • an embodiment of the present application provides a computer program product, which includes computer program code that, when run on a computer, causes the computer to execute any one of the thirtieth aspect or the thirtieth aspect.
  • an embodiment of the present application provides a computer program product, which includes computer program code, which, when run on a computer, causes the computer to execute the above-mentioned thirty-first aspect or the thirty-first aspect Any of the methods described in the possible implementations.
  • an embodiment of the present application provides a chip, including: a processor, the processor is coupled with a memory, the memory is used to store a program or instruction, when the program or instruction is executed by the processor At this time, the chip is made to implement the method described in the thirtieth aspect or any one of the possible implementation manners of the thirtieth aspect.
  • an embodiment of the present application provides a chip, including: a processor, the processor is coupled with a memory, the memory is used to store a program or instruction, when the program or instruction is executed by the processor At this time, the chip is made to implement the method described in the foregoing thirty-first aspect or any one of the possible implementation manners of the thirty-first aspect.
  • an embodiment of the present application provides a communication system.
  • the system includes the device described in the foregoing thirty-second aspect and/or the device described in the foregoing thirty-third aspect, or the system includes the device described in the foregoing thirty-fourth aspect and/or the foregoing thirty-fifth aspect
  • the device or the system includes the device described in the thirty-sixth aspect and/or the device described in the thirty-seventh aspect.
  • any communication device, chip, computer readable medium, computer program product, or communication system provided above are all used to execute the corresponding method provided above, and therefore, the beneficial effects that can be achieved can be Refer to the beneficial effects in the corresponding method, which will not be repeated here.
  • FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the application
  • FIG. 2 is a schematic diagram of the hardware structure of a communication device provided by an embodiment of the application.
  • FIG. 3 is a first flowchart of a communication method provided by an embodiment of this application.
  • FIG. 4 is a schematic diagram 2 of the flow of the communication method provided by an embodiment of this application.
  • FIG. 5 is a third schematic flowchart of a communication method provided by an embodiment of this application.
  • FIG. 6 is a fourth flowchart of a communication method provided by an embodiment of this application.
  • FIG. 7 is a first structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 8 is a second structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 9 is a third structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 10 is a fourth structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 11 is a fifth structural schematic diagram of a communication device provided by an embodiment of this application.
  • FIG. 12 is a sixth structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 13 is a schematic diagram 1 of the composition of a communication system provided by an embodiment of this application.
  • FIG. 14 is a second schematic diagram of the composition of a communication system provided by an embodiment of this application.
  • the method provided in the embodiments of the present application can be used in various dual RAT dual connectivity (MR-DC) architectures.
  • MR-DC dual RAT dual connectivity
  • the dual connection of the 4th generation (4G) communication system and the 5th generation (5G) communication system the dual connection of the 5G communication system and the 4G communication system, or the dual connection of the 5G communication system and the 5G communication system Connect and so on.
  • the dual connection between the 4G communication system and the 5G communication system may include: the evolved universal terrestrial radio access (E-UTRA) system and the dual connection (E-UTRA) of the new radio (NR) system.
  • E-UTRA evolved universal terrestrial radio access
  • E-UTRA dual connection
  • NR new radio
  • EN-DC dual connectivity between the E-UTRA system and the NR system under the 5G core network
  • NG-RAN E-UTRA-NR dual connectivity NGEN-DC
  • EN-DC can also be called option 3 series (option 3 series).
  • EN-DC is a long-term evolution (LTE) base station, such as an eNB, which acts as a master node (MN) or primary base station, and an NR base station, such as gNB, acts as a secondary node (SN) or secondary node.
  • LTE long-term evolution
  • eNB master node
  • gNB secondary node
  • the DC of the base station, the MN and the SN can respectively have a data plane connection with an evolved packet core (EPC) network, that is, a 4G core network, which provides air interface transmission resources for data between the terminal and the EPC.
  • EPC evolved packet core
  • NGEN-DC can also be called option 7 series (option 7series).
  • NGEN-DC is an LTE base station, such as ng-eNB, as the MN, and an NR base station, such as gNB, as the DC of the SN.
  • 5G core network 5G core network, 5GC
  • the dual connection of the 5G communication system and the 4G communication system may include the dual connection of the NR system and the E-UTRA system (NR-E-UTRA dual connectivity, NE-DC), etc.
  • NE-DC can also be called option 4 series.
  • NE-DC is an NR base station, such as gNB, as the MN, and an LTE base station, such as ng-eNB, as the SN, and MN and SN can be connected to the 5GC on the data plane respectively, providing air interface transmission for data between the terminal and the 5GC resource.
  • the dual connection of the 5G communication system and the 5G communication system may include the DC of the NR system and the NR system.
  • both MN and SN are NR base stations.
  • FIG. 1 it is a schematic diagram of the architecture of a communication system 10 provided by an embodiment of this application.
  • the communication system 10 may include a network device 101, a network device 102, a network device 105, a terminal 103, and a terminal 104.
  • FIG. 1 is only a schematic diagram, and does not constitute a limitation on the applicable scenarios of the technical solutions provided in this application.
  • the network device in FIG. 1, for example, the network device 101, the network device 102, or the network device 105 may be any device with a wireless transceiver function. Including but not limited to: evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional NodeB), base station in NR (gNodeB or gNB) or transmission receiving point/transmission reception point (TRP), 3GPP Follow-up evolution and so on.
  • the base station can be: a macro base station, a micro base station, a pico base station, a small station, a relay station, or a balloon station, etc. Multiple base stations can support networks of the same technology mentioned above, or networks of different technologies mentioned above.
  • the base station can contain one or more co-site or non-co-site TRPs.
  • the network device may also be a wireless controller, a centralized unit (CU), and/or a distributed unit (DU) in a cloud radio access network (CRAN) scenario.
  • CRAN cloud radio
  • terminal 103 or terminal 104 is a device with wireless transceiver function, which can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.) ); It can also be deployed in the air (such as airplanes, balloons, and satellites, etc.).
  • the terminal may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver function, virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, industrial control (industrial control) Control), in-vehicle terminal equipment, unmanned driving (self-driving) terminal, assisted driving terminal, remote medical (remote medical) terminal, smart grid (smart grid) terminal, transportation safety ( Terminals in transportation safety, terminals in smart cities, terminals in smart homes, etc.
  • VR virtual reality
  • AR augmented reality
  • industrial control industrial control
  • in-vehicle terminal equipment unmanned driving (self-driving) terminal
  • assisted driving terminal remote medical (remote medical) terminal
  • smart grid (smart grid) terminal smart grid (smart grid) terminal
  • transportation safety Terminals in transportation safety, terminals in smart cities, terminals in smart homes, etc.
  • the embodiments of this application do not limit the application scenarios.
  • Terminals can sometimes be referred to as terminal equipment, user equipment (UE), access terminal, vehicle-mounted terminal, industrial control terminal, UE unit, UE station, mobile station, mobile station, remote station, remote terminal, mobile equipment, UE terminal equipment, wireless communication equipment, machine terminal, UE agent or UE device, etc.
  • the terminal can be fixed or mobile.
  • the terminal may be a wearable device.
  • Wearable devices can also be called wearable smart devices. It is a general term for using wearable technology to intelligently design everyday wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones.
  • the terminal 103 or the terminal 104 can be dual-connected to the network device 101 and the network device 102, where one network device is an MN, and the other network device is an SN.
  • One or more serving cells in the MN form a master cell group (MCG).
  • MCG includes a primary cell (PCell).
  • PCell primary cell
  • SCell secondary cell
  • One or more serving cells in the SN form a secondary cell group (SCG).
  • the SCG includes PSCell.
  • the SCG may optionally include one or more SCells.
  • the terminal 103 or the terminal 104 can perform CPAC.
  • the terminal 103 may perform CPA through the following example 1 and CPC through the following example 2.
  • Example 1 Taking the terminal 103 to establish an RRC connection with the network device 101, the terminal 103 needs to perform CPA and establish a connection with the network device 102 as an example. After the network device 101 and the terminal 103 establish an RRC connection, one or more of them can be configured for the terminal 103
  • the one or more candidate PSCells include PSCells configured by the network device 102 for the terminal 103 and PSCells configured by other network devices for the terminal 103; the network device 101 sends configuration information 1 of the one or more candidate PSCells to the terminal 103,
  • the configuration information 1 of the candidate PSCell includes the configuration 1 of the candidate PSCell and the addition conditions.
  • the terminal 103 receives the configuration information 1 of the one or more candidate PSCells from the network device 101, can detect the addition conditions of the one or more candidate PSCells, and when detecting at least one candidate PSCell that meets the addition conditions, the terminal 103 selects One of the candidate PSCells (for example, the candidate PSCell configured by the network device 102 for the terminal), and the configuration of the candidate PSCell is applied. Subsequently, the terminal 103 initiates random access with the candidate PSCell, and establishes a dual connection with the network device 101 and the network device 102 after the candidate PSCell is successfully randomly accessed.
  • the configuration information 1 of the candidate PSCell may also be referred to as the CPA configuration information 1 of the candidate PSCell, which is not limited.
  • the terminal 103 when the terminal 103 detects multiple candidate PSCells that meet the adding conditions, it can select a candidate PSCell according to a preset strategy, and apply the configuration of the candidate PSCell. For example, when the terminal 103 detects multiple candidate PSCells that meet the addition conditions, it can randomly select one candidate PSCell and apply the configuration of the candidate PSCell; or, it can select the highest signal quality among the multiple candidate PSCells that meet the addition condition. A good candidate PSCell, and apply the configuration of the candidate PSCell; or, among the multiple candidate PSCells that meet the adding conditions and the number of beams is greater than or equal to the threshold, select the candidate PSCell with the largest number of beams, and apply The configuration of this candidate PSCell.
  • the foregoing is only an example of the terminal 103 selecting the candidate PSCell, and the terminal 103 may also select the candidate PSCell in other ways, which is not limited.
  • Example 2 Taking the terminal 103 dually connected to the network device 101 and the network device 102, the network device 101 is MN, the network device 102 is SN, and the terminal 103 needs to perform CPC as an example.
  • the network device 101 can configure one or more candidates for the terminal 103 PSCell; the network device 101 sends the configuration information 2 of the one or more candidate PSCells to the terminal 103, and the configuration information 2 of the candidate PSCell includes the configuration 2 of the candidate PSCell and the change conditions.
  • the terminal 103 receives the configuration information 2 of the one or more candidate PSCells from the network device 101, can detect the change condition of the one or more candidate PSCells, and when it detects at least one candidate PSCell that meets the change condition, the terminal 103 selects One of the candidate PSCells, and the configuration of the candidate PSCell is applied. Subsequently, the terminal 103 initiates random access with the candidate PSCell, and after successful random access of the candidate PSCell, establishes a dual connection with the network device 101 and the secondary base station to which the candidate PSCell belongs.
  • the configuration information 2 of the candidate PSCell may also be referred to as the CPC configuration information 2 of the candidate PSCell, which is not limited.
  • the terminal 103 when it detects multiple candidate PSCells that meet the changing conditions, it can select a candidate PSCell according to a preset strategy, and apply the configuration of the candidate PSCell. For example, when the terminal 103 detects multiple candidate PSCells that meet the changing conditions, it may randomly select a candidate PSCell and apply the configuration of the candidate PSCell; or, may select the most signal quality among the multiple candidate PSCells that meet the changing condition. Good candidate PSCell, and apply the configuration of the candidate PSCell; or, among the multiple candidate PSCells that meet the changing conditions and the number of beams is greater than or equal to the threshold, select the candidate PSCell with the largest number of beams, and apply The configuration of this candidate PSCell.
  • the foregoing is only an example of the terminal 103 selecting the candidate PSCell, and the terminal 103 may also select the candidate PSCell in other ways, which is not limited.
  • the configuration information 1 of the candidate PSCell and the terminal performs CPC
  • the configuration information 2 of the candidate PSCell can be collectively referred to as the configuration information of the candidate PSCell
  • the configuration 1 of the candidate PSCell when the terminal performs CPA, the configuration 1 of the candidate PSCell, and when the terminal performs CPC, the configuration 2 of the candidate PSCell can be collectively referred to as the configuration of the candidate PSCell.
  • the configuration information of the candidate PSCell includes the configuration and addition/change conditions of the candidate PSCell.
  • the configuration of the candidate PSCell is used by the terminal to communicate with the candidate PSCell after adding the candidate PSCell.
  • the addition/change condition of the candidate PSCell includes the addition condition of the candidate PSCell, and the addition condition of the candidate PSCell is used by the terminal to determine whether Add the candidate PSCell.
  • the configuration of the candidate PSCell is used by the terminal to communicate with the candidate PSCell after changing the original PSCell to the candidate PSCell.
  • the addition/change condition of the candidate PSCell includes the change condition of the candidate PSCell, and the change condition of the candidate PSCell is used for the terminal Determine whether to change the original PSCell to the candidate PSCell.
  • the terminal 103 can also switch from the current MN to the target MN with better signal quality. For example, the terminal 103 can switch from the network device 101 to the network device 105. However, when the terminal 103 performs MN handover, the current MN will release one or more candidate PSCells configured for the terminal 103. After the target MN establishes an RRC connection with the terminal 103, one or more candidate PSCells can be reconfigured for the terminal 103, and The configuration information of one or more candidate PSCells configured by the target MN for the terminal is sent to the terminal 103 for the terminal to perform CPAC. The configuration information of one or more candidate PSCells configured by the target MN for the terminal includes the configuration and addition/change of the candidate PSCells condition.
  • the configuration and addition/change conditions of the candidate PSCell generally include more information.
  • the configuration of the candidate PSCell includes: the identification of the configuration of the candidate PSCell, and/or the random access resources allocated by the candidate PSCell to the terminal, and/ Or, the cell radio network temporary identifier (C-RNIT), and/or the cell global identification (CGI) of the candidate PSCell, and/or, the physical cell identifier (physical cell identifier) of the candidate PSCell cell identifier, PCI), and/or frequency information corresponding to the candidate PSCell.
  • C-RNIT cell radio network temporary identifier
  • CGI cell global identification
  • PCI physical cell identifier
  • the frequency information corresponding to the candidate PSCell may include one or more of the following: the absolute frequency of the synchronization signal block (such as absoluteFrequencySSB), the absolute frequency position of the reference resource module (common RB0) (such as absoluteFrequencyPointA), the frequency bandwidth list (such as frequencyBandList), Sub-carrier spacing (SCS) specific carrier list (such as scs-SpecificCarrierList), etc.
  • the configuration of the candidate PSCell also includes resource information corresponding to the candidate PSCell.
  • the resource information corresponding to the candidate PSCell includes one or more of the following: bearer configuration parameters (radioBearerConfig), cell group configuration (cellGroupConfig) parameters, physical (PHY) layer configuration Parameters, media access control (MAC) layer configuration parameters, radio link control (RLC) layer configuration parameters, packet data convergence protocol (PDCP) layer configuration parameters, services Data adaptation protocol (service data adaptation protocol, SDAP) layer configuration parameters or RRC layer configuration parameters.
  • bearer configuration parameters (radioBearerConfig), cell group configuration (cellGroupConfig) parameters, physical (PHY) layer configuration Parameters, media access control (MAC) layer configuration parameters, radio link control (RLC) layer configuration parameters, packet data convergence protocol (PDCP) layer configuration parameters, services Data adaptation protocol (service data adaptation protocol, SDAP) layer configuration parameters or RRC layer configuration parameters.
  • bearer configuration parameters radioBearerConfig
  • cellGroupConfig cell group configuration
  • PHY physical
  • MAC media access control
  • RLC radio link control
  • PDCP packet data convergence protocol
  • the addition/change condition of the candidate PSCell is used for the terminal to determine whether to add the candidate PSCell, or for the terminal to determine whether to change the original PSCell to the candidate PSCell, for example, if the terminal detects that the candidate PSCell satisfies the candidate PSCell's addition/change condition , The terminal determines to add the candidate PSCell, or changes the original PSCell to the candidate PSCell, if the terminal detects that the candidate PSCell does not meet the addition/change conditions of the candidate PSCell, the terminal determines not to add the candidate PSCell or not to change the original PSCell Is the candidate PSCell.
  • the addition/change condition of the candidate PSCell includes the execution event type of the addition/change condition of the candidate PSCell, and the execution event type may also be referred to as a measurement event or a report event.
  • the terminal can measure the signal quality of the candidate PSCell, or measure the signal quality of the candidate PSCell and the signal quality of the neighboring cells of the candidate PSCell, and determine whether to add the candidate PSCell or determine whether to add the original PSCell according to the measurement result and the execution event type.
  • the PSCell is changed to the candidate PSCell.
  • the execution event type includes one or more events.
  • the execution event type may include one or more of the following events: event A3, event A4, event A5, event B1, or event B2.
  • event A3 indicates that the signal quality of the neighboring cell is greater than or equal to a certain offset (offset) than the signal quality of a special cell (SpCell)
  • event A4 indicates that the signal quality of the neighboring cell is greater than or equal to a certain threshold
  • event A5 indicates the signal quality of SpCell Less than or equal to threshold 1 (threshold 1)
  • neighboring cell signal quality is greater than or equal to threshold 2 (threshold 2)
  • event B1 indicates that the inter-radio access technology (inter RAT) neighboring cell signal quality is greater than or equal to A certain threshold
  • event B2 indicates that the PCell signal quality is less than or equal to the threshold 3 (threshold 3)
  • the neighboring cell signal quality of the inter RAT is greater than or equal to the threshold 4 (threshold 4).
  • the above events are only examples of events in the execution event type, and the execution event type may also include other events without limitation.
  • the execution event type also includes the threshold value corresponding to the event in the execution event type.
  • the execution event type also includes the length of time (timeToTrigger) that satisfies the event in the execution event type, and/or the hysteresis value (hysteresis) when entering/leaving the event in the execution event type, etc.
  • the event in the execution event type may correspond to one or more threshold values, for example, the event A5 corresponds to two threshold values.
  • the same event in the execution event type can correspond to different measurement quantities.
  • event A3 can correspond to A3 reference signal received power (RSRP) and A3 reference signal received quality (RSRQ).
  • the configuration and addition/change conditions of one or more candidate PSCells are generally relatively large, and the terminal receives the configuration and addition/change conditions of one or more candidate PSCells with relatively large air interface overhead.
  • an embodiment of the present application provides a communication method.
  • the current MN can indicate to the target MN the configuration information of the candidate PSCell configured by the current MN for the terminal
  • the candidate PSCell configured by the target MN for the terminal may include all or part of the candidate PSCells configured by the current MN for the terminal.
  • the target MN may configure the terminal according to the current MN.
  • the configuration information of the candidate PSCell is sent to the terminal, the identification of the candidate PSCell configured by the target MN for the terminal, or the identification of the configuration information of the candidate PSCell configured by the target MN for the terminal, or the incremental configuration information of the candidate PSCell configured by the target MN for the terminal, The terminal receives the identification of the candidate PSCell configured by the target MN for the terminal, or the identification of the configuration information of the candidate PSCell configured by the target MN for the terminal, or the incremental configuration information of the candidate PSCell configured by the target MN for the terminal, according to the current MN as the terminal
  • the configuration information of the configured candidate PSCell is obtained, and the configuration information of the candidate PSCell configured by the target MN for the terminal is obtained.
  • the target MN is the identity of the candidate PSCell configured by the terminal, or the identity of the configuration information of the candidate PSCell configured by the target MN for the terminal, or the incremental configuration information of the candidate PSCell configured by the target MN for the terminal is less than the candidate configured by the target MN for the terminal
  • the full configuration information of the PSCell therefore, reduces the air interface overhead of CPAC between the target MN and the terminal.
  • the communication system 10 shown in FIG. 1 is only used as an example, and is not used to limit the technical solution of the present application. Those skilled in the art should understand that, in a specific implementation process, the communication system 10 may also include other devices, and the number of network devices and terminal devices may also be determined according to specific needs, without limitation.
  • each network element in FIG. 1 in the embodiment of the present application may be a functional module in a device.
  • the functional module can be an element in a hardware device, such as a communication chip or communication component in a terminal or network device, or a software functional module running on hardware, or a platform (for example, cloud Platform) instantiated virtualization functions.
  • each network element in FIG. 1 may be implemented by the communication device 200 in FIG. 2.
  • Fig. 2 shows a schematic diagram of the hardware structure of a communication device applicable to the embodiments of the present application.
  • the communication device 200 may include at least one processor 201, a communication line 202, a memory 203, and at least one communication interface 204.
  • the processor 201 can be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more programs for controlling the execution of the program of this application. integrated circuit.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • the communication line 202 may include a path for transferring information between the above-mentioned components, such as a bus.
  • the communication interface 204 uses any device such as a transceiver to communicate with other devices or communication networks, such as an Ethernet interface, a radio access network (RAN), and a wireless local area network (wireless local area networks, WLAN) etc.
  • a transceiver to communicate with other devices or communication networks, such as an Ethernet interface, a radio access network (RAN), and a wireless local area network (wireless local area networks, WLAN) etc.
  • RAN radio access network
  • WLAN wireless local area network
  • the memory 203 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types that can store information and instructions
  • the dynamic storage device can also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disk storage, optical disc storage (Including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program codes in the form of instructions or data structures and can be used by a computer Any other media accessed, but not limited to this.
  • the memory can exist independently and is connected to the processor through the communication line 202.
  • the memory can also be integrated with the processor.
  • the memory provided in the embodiments of the present application may generally be non-volatile.
  • the memory 203 is used to store and execute the computer execution instructions involved in the solution of the present application, and the processor 201 controls the execution.
  • the processor 201 is configured to execute computer execution instructions stored in the memory 203, so as to implement the method provided in the embodiment of the present application.
  • the computer-executable instructions in the embodiments of the present application may also be referred to as application program codes, which are not specifically limited in the embodiments of the present application.
  • the processor 201 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 2.
  • the communication device 200 may include multiple processors, such as the processor 201 and the processor 207 in FIG. 2. Each of these processors can be a single-CPU (single-CPU) processor or a multi-core (multi-CPU) processor.
  • the processor here may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).
  • the communication apparatus 200 may further include an output device 205 and an input device 206.
  • the output device 205 communicates with the processor 201 and can display information in a variety of ways.
  • the output device 205 may be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector (projector) Wait.
  • the input device 206 communicates with the processor 201, and can receive user input in a variety of ways.
  • the input device 206 may be a mouse, a keyboard, a touch screen device, a sensor device, or the like.
  • the communication device 200 may be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, an embedded device, or a similar structure in Figure 2 equipment.
  • PDA personal digital assistant
  • the embodiment of the present application does not limit the type of the communication device 200.
  • the network element in the following embodiment may have the components shown in FIG. 2.
  • first or second are only used for the purpose of distinguishing description, and cannot be understood as indicating or implying relative importance, nor can it be understood as indicating or The order is implied.
  • first message and other messages with different numbers in this application are used only for contextual convenience. The different sequence numbers do not have specific technical meanings.
  • the first message, the second message, etc. can be understood Is one or any of a series of messages. It can be understood that, in specific implementation, messages with different numbers may also be messages of the same type, which is not limited in this application.
  • the configuration information of any PSCell can be replaced with the configuration information of the SCG to which the PSCell belongs.
  • the configuration information of the aforementioned candidate PSCell may be replaced with the configuration information of the SCG to which the candidate PSCell belongs.
  • the configuration information of any PSCell includes the configuration and addition/change conditions of the PSCell
  • the configuration information of the SCG to which the PSCell belongs includes the configuration information of the PSCell
  • the configuration information of the SCG to which the PSCell belongs includes the configuration information of the PSCell and Configuration information of one or more SCells in the SCG.
  • the configuration information of any SCell in the SCG includes the configuration of the SCell; or, the configuration information of any SCell in the SCG includes the configuration and adding/changing conditions of the SCell.
  • the configuration and addition/change conditions of the PSCell, as well as the introduction of the configuration and addition/change conditions of the SCell can refer to the description of the configuration and addition/change conditions of the candidate PSCell described above, which will not be repeated.
  • the terminal, the first master node, the second master node, or the first candidate secondary node may perform some or all of the steps in the embodiments of the present application. These steps are only examples. The embodiments of the present application Other steps or variations of various steps can also be performed. In addition, each step may be executed in a different order presented in the embodiment of the present application, and it may not be necessary to perform all the steps in the embodiment of the present application.
  • the communication method includes step 301-step 304.
  • Step 301 The first master node sends a first message to the second master node.
  • the first master node may be the network device 101 or the network device 102 in FIG. 1, or may be a component in the network device 101 or the network device 102.
  • the first master node may be a processor in the network device 101 or the network device 102, a chip in the network device 101 or the network device 102, or a chip system in the network device 101 or the network device 102, etc., without limitation.
  • the second master node may be the network device 105 in FIG. 1 or a component in the network device 105.
  • the second master node may be a processor in the network device 105, a chip in the network device 105, or a chip system in the network device 105, etc., which is not limited.
  • the first master node is the master node to which the terminal is currently connected.
  • the second master node is the target master node of the terminal handover.
  • the terminal may be the terminal 103 or the terminal 104 in FIG. 1, or may be a component in the terminal 103 or the terminal 104.
  • the terminal may be the processor of the terminal 103 or the terminal 104 in FIG. 1, or the chip of the terminal 103 or the terminal 104 in FIG. 1, or the system chip of the terminal 103 or the terminal 104 in FIG. 1, which is not limited.
  • the terminal performs CPA or CPC before switching from the first master node to the second master node, but it has not yet detected a PSCell that meets the addition/change conditions.
  • CPA CPA
  • CPC CPC
  • the first message may be used to indicate the first configuration information of the candidate PSCell in the first PSCell list, or the first message may be used to indicate the candidate PSCell in the first PSCell list.
  • the first configuration information includes addition conditions and configurations of candidate PSCells in the first PSCell list, and the first PSCell list includes one or more candidate PSCells configured by the first master node for the terminal.
  • the first PSCell list may also be referred to as the first PSCell set or the first PSCell group, etc., without limitation.
  • the first message when the first message is used to indicate the first configuration information of the candidate PSCell in the first PSCell list, the first message includes the first configuration information; when the first message is used to indicate the candidate PSCell in the first PSCell list At this time, the first message includes the identifier of the candidate PSCell in the first PSCell list, or the identifier of the SCG to which the candidate PSCell in the first PSCell list belongs, or other identifiers used to indicate the candidate PSCell in the first PSCell list.
  • the first master node obtains first configuration information.
  • the first master node sends a first conditional secondary node addition request message to the first candidate node.
  • the first candidate node receives the first conditional secondary node addition request message, it can confirm the first conditional secondary node addition request message, or it can reject the request. If the first candidate node confirms the first conditional secondary node addition request message, it sends a first addition request confirmation message to the first master node.
  • the first master node After receiving the first add request confirmation message, the first master node can send to the terminal the configuration information of the PSCell configured by the first candidate node for the terminal, and receive the first verification completion message from the terminal.
  • the first candidate node is configured for the terminal
  • the configuration information of the PSCell includes the configuration and addition conditions of the PSCell configured by the first candidate node for the terminal.
  • the first conditional secondary node addition request message may be used to request the first candidate node to pre-configure PSCell configuration information for the terminal.
  • the first conditional secondary node addition request message is also used to indicate that the configuration information of the PSCell configured by the first candidate node for the terminal is used for the addition of the conditional secondary node.
  • the first conditional secondary node addition request message may include the measurement result of the first candidate node, for example, the measurement result of the signal quality of the cell of the first candidate node.
  • the measurement result of the first candidate node may be used as a reference for the configuration information of the PSCell configured by the first candidate node for the terminal.
  • the first conditional secondary node addition request message is a message after the condition addition indication is added to the secondary node addition request (SN addition request) message, or the first conditional secondary node addition request message is a newly added message.
  • the condition addition indication may be 1-bit indication information.
  • the secondary node addition request message may be used to indicate that the configuration information of the PSCell configured by the first candidate node for the terminal is used for the addition of the conditional secondary node.
  • the first add request confirmation message includes the first RRC container (container).
  • the adding condition of the PSCell configured by the first candidate node for the terminal is determined by the first master node, or determined by the first candidate node, or determined through negotiation between the two.
  • the first RRC container contains the configuration of the PSCell configured by the first candidate node for the terminal.
  • the adding condition of the PSCell configured by the first candidate node for the terminal is determined by the first candidate node
  • the first RRC container contains the configuration and adding condition of the PSCell configured by the first candidate node for the terminal.
  • the information contained in the foregoing first RRC container is included in the RRC message generated by the first candidate node, and subsequently, the RRC message is forwarded by the first master node to the terminal.
  • the first verification completion message is used to indicate that the terminal can apply the configuration information of the PSCell configured by the first candidate node for the terminal.
  • the first message may be used to indicate the first configuration information of the candidate PSCell in the first PSCell list and the original PSCell, or the first message may be used to indicate the candidate PSCell and the original PSCell in the first PSCell list.
  • the first configuration information includes change conditions and configurations of candidate PSCells in the first PSCell list.
  • the first PSCell list please refer to the above scenario 1, which will not be repeated.
  • the first message when the first message is used to indicate the first configuration information of the candidate PSCell in the first PSCell list and the original PSCell, the first message includes the first configuration information and the identity of the original PSCell; when the first message is used to indicate When the candidate PSCell and the original PSCell in the first PSCell list, the first message includes the identification of the candidate PSCell in the first PSCell list, the identification of the original PSCell, or the identification of the SCG to which the candidate PSCell in the first PSCell list belongs and the identification of the original PSCell , Or other used to indicate the identity of the candidate PSCell in the first PSCell list and the identity of the original PSCell.
  • the original PSCell is the PSCell to which the terminal is connected before the terminal switches from the first master node to the second master node.
  • the first message also includes the interface identifier of the node to which the original PSCell belongs and the terminal (for example, SN UE XnAP ID). Taking EN-DC as an example, the SN UE XnAP ID may be SN UE X2AP ID.
  • the first master node obtains first configuration information.
  • the configuration information of the PSCell configured by the first candidate node for the terminal includes the configuration and change of the PSCell configured by the first candidate node for the terminal.
  • the first master node may send to the terminal the configuration information of the PSCell configured by the first candidate node for the terminal, or may also send to the terminal the PSCell configured by the first candidate node for the terminal.
  • the configuration information is different from the configuration information of the original PSCell.
  • the first incremental configuration information includes the configuration of the node to which the candidate PSCells in the first PSCell list belong to the terminal.
  • the configuration information of the PSCell is different from the configuration information of the original PSCell.
  • the first incremental configuration information includes an add modification list (ToAddModList) and/or a release list (ToReleaseList).
  • the addition and modification list includes configuration information of candidate PSCells in the first PSCell list that are different from the configuration information of the original PSCell, and the release list includes configuration information relative to the original PSCell, and configuration information to be released by the candidate PSCells in the first PSCell list. It should be understood that if the configuration information of one or several candidate PSCells in the first PSCell list is the same as the configuration information of the original PSCell, the first incremental configuration information may not include the one or several candidate PSCells. Configuration information.
  • the first PSCell list includes candidate PSCell 1, candidate PSCell 2, and candidate PSCell 3.
  • the configuration information of candidate PSCell 1 includes data bearer 1.
  • data bearer 2 the configuration information of candidate PSCell 2 includes data bearer 1 and data bearer 4
  • the configuration information of candidate PSCell 3 includes data bearer 1 data bearer 2 and data bearer 3.
  • the first incremental configuration information can be as shown in Table 1.
  • the first incremental configuration information can be as shown in Table 2.
  • the first incremental configuration information includes an added modification list and a release list, where the added modification list includes data bearer 1 and data bearer 4, and the release list includes data bearer 3.
  • the first incremental configuration information includes an added modification list, where the added modification list includes data bearer 1 and data bearer 4, and data bearer 1 and data bearer 2. It is understandable that the first incremental configuration information shown in Table 1 and Table 2 does not include the configuration information of the candidate PSCell 3, which means that the configuration information of the candidate PSCell 3 is the same as the configuration information of the original PSCell.
  • the foregoing first configuration information may also be obtained by the node to which the original PSCell belongs and sent to the terminal.
  • the process in which the node to which the original PSCell belongs obtains the first configuration information and sends the first configuration information to the terminal can refer to the description of the first master node obtaining the first configuration information and sending the first configuration information to the terminal, which will not be repeated.
  • the first message is a handover request (handover request) message.
  • Step 302 The second master node receives the first message from the first master node, determines according to the first message that the first master node has configured the CPAC function for the terminal, and sends the second message to the first master node.
  • the second message includes the second RRC container.
  • the second RRC container contains the identifier of the first PSCell candidate, or the identifier of the configuration information of the first PSCell candidate, or the second incremental configuration information of the candidate PSCell in the second PSCell list.
  • the identification or information contained in the above-mentioned second RRC container is included in the RRC message generated by the second master node, and subsequently, the RRC message is forwarded by the first master node to the terminal.
  • the first candidate PSCell is included in both the first PSCell list and the second PSCell list.
  • the identifier of the configuration information of the first candidate PSCell is used to identify the configuration information of the first candidate PSCell. It is understandable that the number of first candidate PSCells may be zero, one or more, which is not limited.
  • Step 302 is introduced below for case 1 and case 2 in step 301 respectively.
  • the second master node determines according to the first message that the first master node has configured the CPA function for the terminal, and adds candidate PSCells in the second PSCell list to the terminal.
  • the second PSCell list includes one or more candidate PSCells configured by the second master node for the terminal.
  • the second PSCell list may also be referred to as a second PSCell set or a second PSCell group, etc., without limitation.
  • the second master node sends the second conditional auxiliary node to the second candidate node after determining that the first master node has configured the CPA function for the terminal. Node addition request message.
  • the second candidate node can confirm the second conditional secondary node addition request message, or reject the request. If the second candidate node confirms the second conditional secondary node addition request message, it sends a second addition request confirmation message to the second master node.
  • the second conditional secondary node addition request message and the second addition request confirmation message reference may be made to the description of the first conditional secondary node addition request message and the first addition request confirmation message in step 301, which will not be repeated.
  • the second master node determines the second message according to the first message and the second PSCell list.
  • the second master node determines the second PSCell list and the second configuration information according to the first configuration information, and according to the first configuration information A configuration information, a second PSCell list, and a second configuration information determine a second message, where the second configuration information includes addition conditions and configurations of candidate PSCells in the second PSCell list, and the second RRC container in the second message includes the second The second incremental configuration information of the candidate PSCell in the PSCell list.
  • the second incremental configuration information includes different configuration information in the configuration information of the same candidate PSCell configured by the second master node and the first master node for the terminal, and/or, other than the first candidate PSCell in the second PSCell list
  • the configuration information of each candidate PSCell, and/or the identification of the configuration information of the candidate PSCell in the released first PSCell list determined by the second master node.
  • the second incremental configuration information includes an add modification list (ToAddModList) and/or a release list (ToReleaseList), and the addition modification list includes the second master node and the configuration information of the same candidate PSCell configured by the first master node for the terminal
  • the release list does not include the identifier of the configuration information of the second candidate PSCell, the second configuration information of the second candidate PSCell Same as the first configuration information.
  • the information included in the first message is shown in Table 3.
  • the second PSCell list determined by the second master node includes candidate PSCell 2, candidate PSCell 3, and candidate PSCell 4.
  • the second configuration information of candidate PSCell 2 includes configuration information 4.
  • the second configuration information of candidate PSCell 3 includes configuration information 3, and the second configuration information of candidate PSCell 4 includes configuration information 5 as an example.
  • the first configuration information of candidate PSCell 1 includes configuration information 1
  • One configuration information includes configuration information 2
  • the first configuration information of the candidate PSCell 3 includes configuration information 3.
  • the second incremental configuration information may be as shown in Table 4.
  • the second incremental configuration information includes an add/modify list
  • the release list, the added modification list includes configuration information 4 and configuration information 5.
  • Configuration information 4 is the second configuration information of candidate PSCell 2 that is different from the configuration information in the first configuration information
  • configuration information 5 is the second configuration of candidate PSCell 4 Information
  • the release list includes candidate PSCell 1. It is understandable that the second incremental configuration information does not include candidate PSCell 3 related information, which means that the second configuration information of candidate PSCell 3 is the same as the first configuration information.
  • Identifier of the configuration information of the candidate PSCell in the first PSCell list First configuration information Identification of the configuration information of candidate PSCell 1 Configuration information 1 Identification of the configuration information of the candidate PSCell 2 Configuration information 2 The identification of the configuration information of the candidate PSCell 3 Configuration information 3
  • Table 4 is only an example of the second incremental configuration information, and the second incremental configuration information may also be in other forms and is not limited.
  • the second master node determines the second PSCell candidate list according to the first PSCell list, and determines the second PSCell candidate list according to the second PSCell list.
  • the second RRC container in the second message contains the identity of the first PSCell candidate, or the identity of the SCG to which the first candidate PSCell belongs, or the identity of the configuration information of the first candidate PSCell, or other indications for the second PSCell list The identity of the candidate PSCell in.
  • the PSCells in the second PSCell list are included in the first PSCell list, or the second PSCell list is the same as the first PSCell list, and the addition/change conditions and configuration of candidate PSCells in the second PSCell list are the same as those in the second PSCell list.
  • the corresponding candidate PSCells in the first PSCell list are the same. It is understandable that the identifier of the configuration information of the first candidate PSCell may be sent by the first master node to the second master node, or may be sent by the first candidate PSCell to the second master node.
  • the second master node determines according to the first message that the first master node has configured the CPC function for the terminal, and adds candidate PSCells in the second PSCell list to the terminal.
  • the second candidate node configures the PSCell configuration for the terminal.
  • the information includes the configuration and change conditions of the PSCell configured by the second candidate node for the terminal.
  • the second master node determines the second message according to the first message and the second PSCell list.
  • the second RRC container contains the second increase.
  • the information in the volume configuration information may also be replaced with: different configuration information in the candidate PSCell in the second PSCell list and the configuration information in the original PSCell.
  • the second incremental configuration information includes an add modification list (ToAddModList) and/or a release list (ToReleaseList).
  • the adding and modifying list includes configuration information that is different from the configuration information of the candidate PSCell in the second PSCell list and the configuration information of the original PSCell, and the release list includes configuration information relative to the original PSCell, and configuration information to be released by the candidate PSCell in the second PSCell list. It should be understood that if the configuration information of one or several candidate PSCells in the second PSCell list is the same as the configuration information of the original PSCell, the second incremental configuration information may not include the one or several candidate PSCells. Configuration information.
  • the second PSCell list includes candidate PSCell 1, candidate PSCell 2 and candidate PSCell 3, and the second configuration information of candidate PSCell 1 includes data bearer 1.
  • Data bearer 2 and data bearer 3 the second configuration information of candidate PSCell 2 includes data bearer 1 and data bearer 2
  • the second configuration information of candidate PSCell 3 includes data bearer 1 and data bearer 4
  • the second incremental configuration The information may be as shown in Table 5; or, the second incremental configuration information may be as shown in Table 6.
  • the second incremental configuration information includes an added modification list and a release list.
  • the added modification list includes data bearer 1 and data bearer 4
  • the release list includes data bearer 3.
  • the second incremental configuration information includes an added modification list, where the added modification list includes data bearer 1 and data bearer 2, and data bearer 1 and data bearer 4. It is understandable that none of the second incremental configuration information shown in Table 5 and Table 6 includes the second configuration information of the candidate PSCell 1, which means that the second configuration information of the candidate PSCell 1 is the same as the configuration information of the original PSCell.
  • the second master node determines not to change the PSCell to which the terminal is currently connected, the second master node sends an SN addition request (SN addition request) message, and receive an SN addition request acknowledgement (SN addition request acknowledge) message from the node to which the original PSCell belongs.
  • the SN add request message can be used to request to add the original PSCell as the PSCell of the terminal.
  • the SN add request message may include the interface identifier of the node to which the original PSCell belongs and the terminal, such as SN UE XnAP ID, SN UE X2 ID, etc., so that the node to which the original PSCell belongs can determine the context with the terminal, and the original PSCell does not need to regenerate the context with the terminal.
  • the SN addition request confirmation message is used to indicate to the second master node that the node to which the original PSCell belongs determines that the second master node adds the original PSCell to the terminal.
  • the SN addition request confirmation message includes the third incremental configuration information or the full configuration information.
  • the third incremental configuration information includes configuration information of the original PSCell after the terminal is switched to the second master node and different configuration information in the configuration information of the original PSCell before the terminal is switched to the second master node.
  • the full configuration information includes the configuration information of the original PSCell after the terminal is switched to the second master node.
  • the second message is a handover request acknowledgement (handover request acknowledge) message.
  • Step 303 The first master node receives the second message from the second master node, and sends a third message to the terminal.
  • the third message includes the identifier of the first candidate PSCell, or the identifier of the configuration information of the first candidate PSCell, or the second incremental configuration information of the candidate PSCell in the second PSCell list.
  • the identification of the first candidate PSCell, or the identification of the configuration information of the first candidate PSCell, or the introduction of the second incremental configuration information of the candidate PSCell in the second PSCell list can refer to the description in step 302 above, and will not be repeated here. .
  • Step 304 The terminal receives the third message from the first master node, and adds the target PSCell or changes the target PSCell from the original PSCell according to the third message and the first configuration information.
  • the target PSCell is a candidate PSCell in the second PSCell list.
  • Step 303 is introduced below for case 1 and case 2 in step 301 and step 302 respectively.
  • the terminal determines the second configuration information according to the third message and the first configuration information, and according to the second configuration information, adds PSCells that meet the candidate PSCell addition conditions in the second PSCell list as Target PSCell.
  • the terminal corresponds to the identity of the first candidate PSCell or the identity of the configuration information of the first candidate PSCell
  • the first configuration information of is determined to be the second configuration information.
  • the terminal may determine the first configuration information of candidate PSCell 2 as The second configuration information of the candidate PSCell 2 determines the first configuration information of the candidate PSCell 3 as the second configuration information of the candidate PSCell 3.
  • the terminal determines the second configuration information according to the second incremental configuration information and the first configuration information.
  • the second incremental configuration information of the candidate PSCells in the second PSCell list reference may be made to the above step 302, which will not be repeated.
  • the terminal traverses the configuration information corresponding to each candidate PSCell in the addition/modification list in the second incremental configuration information, and determines the configuration information corresponding to each candidate PSCell in the addition/modification list as the second configuration information of the candidate PSCell , Determine the first configuration information of the candidate PSCell that is included in the first PSCell list but not included in the add/modify list and the release list as the second configuration information of the candidate PSCell.
  • the terminal may also delete the first configuration information of each candidate PSCell in the stored release list.
  • the second configuration information of the candidate PSCell in the second PSCell list may be as shown in Table 7.
  • the candidate PSCell The second configuration information of 2 includes configuration information 4
  • the second configuration information of candidate PSCell 3 includes configuration information 3
  • the second configuration information of candidate PSCell 4 includes configuration information 5.
  • the terminal may also delete the stored first configuration information of the candidate PSCell1.
  • Identifier of the configuration information of the candidate PSCell in the second PSCell list Second configuration information Identification of the configuration information of the candidate PSCell 2 Configuration information 4 The identification of the configuration information of the candidate PSCell 3 Configuration information 3 Identification of the configuration information of the candidate PSCell 4 Configuration information 5
  • the terminal adds PSCells that meet the candidate PSCell addition condition in the second PSCell list as the target PSCell, including: the terminal determines the target PSCell that meets the candidate PSCell addition condition in the second PSCell list, and initiates random to the target PSCell Access.
  • the terminal determines the second configuration information according to the third message and the first configuration information, and changes from the original PSCell to the target PSCell according to the second configuration information.
  • the terminal determines the second configuration according to the second incremental configuration information and the first configuration information information. Specifically, reference may be made to the description in case 1 in step 303 above, and details are not repeated.
  • the terminal changing from the original PSCell to the target PSCell includes: the terminal determines the target PSCell that meets the change condition of the candidate PSCell in the second PSCell list, initiates random access to the target PSCell and releases the connection with the original PSCell.
  • the terminal releases the connection with the first master node, initiates random access to the second master node, and sends a reconfiguration complete message to the second master node after the random access is successful,
  • the reconfiguration complete message is used to indicate that the terminal succeeds in switching the master node and the terminal succeeds in verifying the second configuration information.
  • the terminal adds the target PSCell or changes from the original PSCell to the target PSCell, the terminal sends a confirmation message to the second master node, and the confirmation message includes the identity of the target PSCell or the identity of the SCG to which the target PSCell belongs.
  • the confirmation message further includes a reconfiguration complete message sent by the terminal to the target PSCell, and the reconfiguration complete message is used to indicate that the terminal successfully adds the target PSCell, or the terminal successfully changes from the original PSCell to the target PSCell.
  • the second master node after receiving the confirmation message, sends the reconfiguration complete message sent by the terminal to the target PSCell to the target PSCell.
  • the terminal may receive a third message from the first master node, where the third message includes the identity of the first candidate PSCell, or the identity of the configuration information of the first candidate PSCell, or the second PSCell list
  • the terminal may add the target PSCell or change the target PSCell from the original PSCell according to the third message and the addition/change condition and configuration of the candidate PSCell in the first PSCell list.
  • the size of the identifier or information included in the third message is smaller than the size of the addition/change condition and configuration of the candidate PSCell in the second PSCell list. Therefore, the air interface overhead of the CPAC between the second master node and the terminal can be reduced.
  • the first master node may also send a first release request message to the node to which each candidate PSCell in the first PSCell list belongs, so that the first master node can release Each candidate PSCell in the first PSCell list.
  • the method shown in FIG. 3 further includes step 401.
  • Step 401 The first master node sends a first release request message to the node to which each candidate PSCell in the first PSCell list belongs.
  • the first release request message is used to request the release of each candidate PSCell in the first PSCell list.
  • the first release request message includes indication information for retaining the terminal context, and the indication information is used to instruct the first candidate secondary node to retain the context with the terminal.
  • a candidate secondary node does not need to regenerate the context with the terminal. If the first candidate PSCell is determined as the target PSCell, the first candidate secondary node can communicate with the terminal through the reserved context with the terminal.
  • the node to which each candidate PSCell in the first PSCell list belongs receives the first release request message from the first master node.
  • the first master node determines that the terminal is to be handed over to the second master node, it can instruct the node to which each candidate PSCell in the first PSCell list belongs to release the candidate PSCell configured for the terminal through the first master node.
  • the node to which each candidate PSCell in the first PSCell list belongs can configure the released candidate PSCell to other terminals.
  • the first primary node may also instruct the first candidate secondary node to retain Therefore, when the second master node configures the first candidate PSCell as a candidate PSCell of the terminal, the first candidate secondary node does not need to regenerate the context with the terminal. Subsequently, if the first candidate PSCell is determined as the target PSCell , The first candidate secondary node can communicate with the terminal through the reserved context.
  • the first master node sends a second release request message to the node to which the original PSCell belongs, so that the first master node releases the original PSCell.
  • the method shown in FIG. 4 further includes step 501.
  • Step 501 The first master node sends a second release request message to the node to which the original PSCell belongs.
  • the second release request message is used to request the release of the original PSCell.
  • the second release request message includes indication information for retaining the terminal context, and the indication information is used to instruct the node to which the original PSCell belongs to retain the context with the terminal, and subsequently, The original PSCell does not need to regenerate the context with the terminal, and can communicate with the terminal through the reserved context with the terminal.
  • the node to which the original PSCell belongs receives the second release request message from the first master node.
  • step 501 may be executed first and then step 401 may be executed, or step 401 may be executed first and then step 501 may be executed.
  • the first master node determines that the terminal is to switch to the second master node, it can instruct the node to which the original PSCell belongs to release the original PSCell, so that the node to which the original PSCell belongs can configure the released original PSCell to other terminals.
  • the first master node may also instruct the node to which the original PSCell belongs to retain the context with the terminal, so that the node to which the original PSCell belongs retains the context of the node and the terminal to which the original PSCell belongs, and can also pass The reserved context communicates with the terminal.
  • the master node can configure one or more candidate PSCells for the terminal, and send the configuration information of the one or more candidate PSCells to the terminal, and subsequently, if the master node
  • the master node When a node adds a target PSCell in one or more candidate PSCells to the terminal, it may indicate the target PSCell to the terminal through the identification of the target PSCell or the incremental configuration of the target PSCell.
  • the method includes step 601 to step 605.
  • Step 601 The master node sends the first configuration information of the target PSCell to the terminal.
  • the master node may be the network device 101 or the network device 102 in FIG. 1, and the master node may also be a component in the network device 101 or the network device 102 in FIG. 1.
  • the master node may be the processor of the network device 101 or the network device 102 in FIG. 1, or the chip of the network device 101 or the network device 102 in FIG. 1, or the chip system of the network device 101 or the network device 102 in FIG. 1, etc., No restrictions.
  • the terminal may be the terminal 103 or the terminal 104 in FIG. 1, and the terminal may also be a component in the terminal 103 or the terminal 104 in FIG. 1.
  • the terminal may be the processor of the terminal 103 or the terminal 104 in FIG. 1, or the chip of the terminal 103 or the terminal 104 in FIG. 1, or the chip system of the terminal 103 or the terminal 104, etc., which is not limited.
  • the first configuration information of the target PSCell includes configuration information of the target PSCell when the master node configures the target PSCell as a candidate PSCell of the terminal.
  • the configuration information of the target PSCell includes addition/change conditions and configuration of the target PSCell.
  • the target PSCell is included in a PSCell list, and the PSCell list includes one or more candidate PSCells configured by the master node for the terminal.
  • the master node sends the first configuration information of candidate PSCells in the PSCell list to the terminal.
  • the first configuration information of the candidate PSCell includes the first configuration information of the target PSCell.
  • the master node obtains the first configuration information of the candidate PSCell in the PSCell list.
  • the master node sends a conditional secondary node addition request message to the third candidate node, and after the third candidate node receives the conditional secondary node addition request message, The conditional secondary node addition request message can be confirmed, or the request can be rejected. If the third candidate node confirms the conditional secondary node addition request message, it sends an addition request confirmation message to the primary node.
  • the addition request confirmation message includes the candidates in the PSCell list. The first configuration information of the PSCell.
  • the master node may send the first configuration information of the candidate PSCell in the PSCell list to the terminal, and receive a verification completion message from the terminal.
  • the process for the master node to obtain the first configuration information of the candidate PSCells in the PSCell list refer to the above step 301, the process for the first master node to obtain the first configuration information, which will not be repeated.
  • Step 602 The terminal obtains the first configuration information of the target PSCell.
  • the terminal receives and stores the first configuration information of the target PSCell from the master node.
  • the terminal obtains the first configuration information of the target PSCell locally; or, the terminal receives and stores the first configuration information from the target PSCell.
  • the terminal obtains the first configuration information of the target PSCell locally.
  • Step 603 The master node sends the first message to the terminal.
  • the first message may be used to instruct the master node to add a target PSCell for the terminal.
  • the first message may include the identifier of the target PSCell or the identifier of the SCG to which the target PSCell belongs; or, the first message may include the identifier of the target PSCell or the identifier of the SCG to which the target PSCell belongs, and the incremental configuration of the target PSCell; or
  • a message includes the identification of the target PSCell configuration information and the incremental configuration of the target PSCell.
  • the incremental configuration includes different configuration information in the second configuration information of the target PSCell and the first configuration information of the target PSCell.
  • the second configuration information includes configuration information of the target PSCell when the master node determines that the target PSCell is the PSCell of the terminal.
  • the second configuration information of the target PSCell is the same as the first configuration information of the target PSCell, and the first message includes the identity of the target PSCell or the identity of the SCG to which the target PSCell belongs, Or other identifiers used to indicate the target PSCell. If the second configuration information of the target PSCell is different from the first configuration information of the target PSCell, the first message includes the identifier of the target PSCell or the identifier of the SCG to which the target PSCell belongs, and the incremental configuration of the target PSCell; or, the first message includes The identifier of the target PSCell configuration information and the incremental configuration of the target PSCell.
  • the master node adds a target PSCell for the terminal.
  • the master node sends an SN addition request (SN addition request) message to the node to which the PSCell belongs, and receives an SN addition request acknowledgement (SN addition request acknowledge) message from the node to which the target PSCell belongs.
  • the SN adding request message can be used to request to add the target PSCell as the PSCell of the terminal.
  • the SN addition request confirmation message is used to instruct the node to which the target PSCell belongs to determine that the master node adds the target PSCell to the terminal. If the second configuration information of the target PSCell is different from the first configuration information of the target PSCell, the SN addition request confirmation message includes the incremental configuration of the target PSCell.
  • Step 604 The terminal receives the first message from the master node, and determines the second configuration information of the target PSCell according to the first message and the first configuration information of the target PSCell.
  • the terminal determines the first configuration information corresponding to the identifier of the target PSCell or the identifier of the SCG to which the target PSCell belongs as the second configuration of the target PSCell information.
  • the terminal determines the target PSCell according to the first configuration information of the target PSCell and the incremental configuration of the target PSCell The second configuration information.
  • Step 605 The terminal establishes a connection with the secondary node to which the target PSCell belongs according to the second configuration information of the target PSCell.
  • the terminal initiates random access to the secondary node to which the target PSCell belongs according to the second configuration information of the target PSCell.
  • the master node After the master node adds the target PSCell in the PSCell list to the terminal, it does not need to send the second configuration information of the target PSCell to the terminal, but sends the first message to the terminal.
  • the identifier included in the first message Or the size of the incremental configuration is smaller than the size of the second configuration information of the target PSCell, thus reducing the air interface overhead.
  • the terminal, the first master node, the second master node, or the first candidate auxiliary node, etc. include hardware structures and/or software modules corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to realize the described functions, but this realization should not be considered as going beyond the scope of this application.
  • the embodiment of the present application can divide the functional modules of the terminal, the first master node, the second master node, or the first candidate auxiliary node according to the foregoing method examples.
  • each functional module can be divided corresponding to each function, or two or More than two functions are integrated in one processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or software functional modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 7 shows a schematic structural diagram of a communication device 70.
  • the communication device 70 may be a terminal or a chip or a system on a chip in the terminal, or other combination devices or components that can realize the above-mentioned terminal functions.
  • the communication device 70 may be used to perform the functions of the terminal involved in the above-mentioned embodiments.
  • the communication device 70 shown in FIG. 7 includes: a receiving unit 701 and a processing unit 702.
  • the receiving unit 701 is configured to receive a first message from a first master node, where the first message includes the identity of the first candidate PSCell included in both the first PSCell list and the second PSCell list, Or the identification of the configuration information of the first candidate PSCell included in the first PSCell list and the second PSCell list, or the incremental configuration information of the candidate PSCell in the second PSCell list; wherein, the first candidate
  • the configuration information of the PSCell includes the addition/change condition and configuration of the first PSCell candidate
  • the first PSCell list includes one or more candidate PSCells configured by the first master node for the communication device
  • the second PSCell list includes second PSCells.
  • the processing unit 702 is configured to add or change the target PSCell from the original PSCell to the target PSCell according to the first message and first configuration information, the first configuration information including the addition/change conditions of the candidate PSCell in the first PSCell list and Configuration, the target PSCell is the PSCell in the second PSCell list, and the original PSCell is the PSCell to which the communication device is connected before the communication device switches from the first master node to the second master node.
  • the incremental configuration information includes different configuration information in the configuration information of the same candidate PSCell configured by the second master node and the first master node for the communication device, and/or, in the second PSCell list Configuration information of each candidate PSCell other than the first candidate PScell, and/or, the second master node determines the identifier of the configuration information of the candidate PSCell in the first PSCell list to be released.
  • the processing unit 702 is specifically configured to determine second configuration information according to the first message and the first configuration information, where the second configuration information includes addition/change conditions and configurations of candidate PSCells in the second PSCell list;
  • the processing unit 702 is further specifically configured to add a PSCell in the second PSCell list that meets the candidate PSCell addition/change condition as the target PSCell or change the original PSCell to the target PSCell according to the second configuration information.
  • the first message includes incremental configuration information of candidate PSCells in the second PSCell list
  • the processing unit 702 is further specifically configured to determine the second configuration information according to the incremental configuration information and the first configuration information.
  • the first message includes the identity of the first candidate PSCell, or the identity of the configuration information of the first candidate PSCell
  • the processing unit 702 is further specifically configured to identify the first candidate PSCell, or the first candidate PSCell.
  • the first configuration information corresponding to the identifier of the configuration information of the candidate PSCell is determined to be the second configuration information.
  • the first configuration information further includes configuration information of the original PSCell
  • the incremental configuration information includes configuration information that is different between any candidate PSCell in the second PSCell list and the configuration information of the original PSCell.
  • the communication device 70 is presented in the form of dividing various functional modules in an integrated manner.
  • the "module” here can refer to a specific ASIC, circuit, processor and memory that executes one or more software or firmware programs, integrated logic circuit, and/or other devices that can provide the above-mentioned functions.
  • the communication device 70 may adopt the form shown in FIG. 2.
  • the processor 201 in FIG. 2 may invoke the computer-executable instructions stored in the memory 203 to cause the communication device 70 to execute the communication method in the foregoing method embodiment.
  • the functions/implementation process of the receiving unit 701 and the processing unit 702 in FIG. 7 may be implemented by the processor 201 in FIG. 2 calling a computer execution instruction stored in the memory 203.
  • the function/implementation process of the processing unit 702 in FIG. 7 may be implemented by the processor 201 in FIG. 2 calling a computer execution instruction stored in the memory 203
  • the function/implementation process of the receiving unit 701 in FIG. 7 may be implemented as shown in FIG. 2 in the communication interface 204 to achieve.
  • the communication device 70 provided in this embodiment can execute the above-mentioned communication method, the technical effects that can be obtained can refer to the above-mentioned method embodiment, and will not be repeated here.
  • FIG. 8 shows a schematic structural diagram of a communication device 80.
  • the communication device 80 may be a first master node or a chip or a system on a chip in the first master node, or other combination devices, components, etc. that can realize the functions of the first master node, and the communication device 80 may be used to implement the foregoing embodiments.
  • the communication device 80 shown in FIG. 8 includes: a sending unit 801 and a receiving unit 802.
  • the sending unit 801 is configured to send a second message to the second master node, where the second message is used to indicate first configuration information of candidate PSCells in the PSCell list of the first primary and secondary cell, where the first configuration information includes the first PSCell list Add/change conditions and configuration of candidate PSCells, the first PSCell list includes one or more candidate PSCells configured by the communication device for the terminal, and the second master node is a target master node for handover of the terminal.
  • the receiving unit 802 is configured to receive a third message from the second master node, the third message is obtained according to the second message, and the third message includes not only included in the first PSCell list, but also included in the first PSCell list. 2.
  • the identification of the first candidate PSCell in the PSCell list, or the identification of the configuration information of the first candidate PSCell included in both the first PSCell list and the second PSCell list, or the identification of the candidate PSCell in the second PSCell list Incremental configuration information of the PSCell, the configuration information of the first candidate PSCell includes the addition/change conditions and configuration of the first candidate PSCell, and the second PSCell list includes one or more candidates configured by the second master node for the terminal PSCell.
  • the sending unit 801 is further configured to send a first message to the terminal according to the third message, the first message including the identity of the first candidate PSCell, or the identity of the configuration information of the first candidate PSCell, or the second PSCell Incremental configuration information of candidate PSCells in the list.
  • the incremental configuration information includes different configuration information in the configuration information of the same candidate PSCell configured by the second master node and the communication device for the terminal, and/or, the second PSCell list except the first PSCell Configuration information of each candidate PSCell other than a candidate PScell, and/or the second master node determines the identifier of the configuration information of the candidate PSCell in the first PSCell list to be released.
  • the sending unit 801 is further configured to send a first release request message to the node to which each candidate PSCell in the first PSCell list belongs, where the first release request message is used to request the release of each PSCell in the first PSCell list.
  • the first release request message is used to request the release of each PSCell in the first PSCell list.
  • the first release request message is also used to instruct the node to which the first candidate PSCell belongs to retain the context with the terminal.
  • the second message includes the configuration information of the candidate PSCell in the first PSCell list; or, the second message includes the identity of the candidate PSCell in the first PSCell list; or, the second message includes the first PSCell The identifier of the secondary cell group to which the candidate PSCell belongs in the list.
  • the second message further includes the identity of the original PSCell, and the original PSCell is the PSCell to which the terminal is connected before the terminal switches from the communication device to the second master node.
  • the incremental configuration information includes configuration information of any candidate PSCell in the second PSCell list that is different from the configuration information of the original PSCell.
  • the communication device 80 is presented in the form of dividing various functional modules in an integrated manner.
  • the "module” here can refer to a specific ASIC, circuit, processor and memory that executes one or more software or firmware programs, integrated logic circuit, and/or other devices that can provide the above-mentioned functions.
  • the communication device 80 may adopt the form shown in FIG. 2.
  • the processor 201 in FIG. 2 may invoke the computer execution instructions stored in the memory 203 to enable the communication device 80 to execute the communication method in the foregoing method embodiment.
  • the functions/implementation process of the sending unit 801 and the receiving unit 802 in FIG. 8 may be implemented by the processor 201 in FIG. 2 calling a computer execution instruction stored in the memory 203.
  • the functions/implementation process of the sending unit 801 and the receiving unit 802 in FIG. 8 may be implemented through the communication interface 204 in FIG. 2.
  • the communication device 80 provided in this embodiment can execute the above-mentioned communication method, the technical effects that can be obtained can refer to the above-mentioned method embodiment, and will not be repeated here.
  • FIG. 9 shows a schematic structural diagram of a communication device 90.
  • the communication device 90 may be a second master node or a chip or a system on a chip in the second master node, or other combination devices, components, etc. that can realize the functions of the second master node, and the communication device 90 may be used to implement the above-mentioned embodiments.
  • the communication device 90 shown in FIG. 9 includes: a receiving unit 901 and a processing unit 902.
  • the receiving unit 901 is configured to receive a second message from the first primary node, where the second message is used to indicate the first configuration information of the candidate PSCell in the PSCell list of the first primary and secondary cell, where the first configuration information includes the first PSCell Add/change conditions and configurations of candidate PSCells in the list, the first PSCell list includes one or more candidate PSCells configured by the first master node for the terminal, and the communication device is the target master node for handover of the terminal.
  • the processing unit 902 is configured to determine, according to the second message, that the first master node has configured a conditional PSCell addition/change function for the terminal, and send a third message to the first master node, where the third message includes both In the first PSCell list, the identification of the first candidate PSCell in the second PSCell list is also included, or the configuration information of the first candidate PSCell is included in the first PSCell list and the second PSCell list ID, or incremental configuration information of the candidate PSCell in the second PSCell list, the configuration information of the first PSCell candidate includes the addition/change condition and configuration of the first PSCell candidate, and the second PSCell list includes the communication device for the One or more candidate PSCells configured by the terminal.
  • the incremental configuration information includes different configuration information in the configuration information of the same candidate PSCell configured by the communication device and the first master node for the terminal, and/or, the second PSCell list except for the second PSCell Configuration information of each candidate PSCell other than a candidate PScell, and/or the second master node determines the identifier of the configuration information of the candidate PSCell in the first PSCell list to be released.
  • the second message includes the configuration information of the candidate PSCell in the first PSCell list; or, the second message includes the identity of the candidate PSCell in the first PSCell list; or, the second message includes the first PSCell The identifier of the secondary cell group to which the candidate PSCell belongs in the list.
  • the second message further includes the identity of the original PSCell, and the original PSCell is the PSCell to which the terminal is connected before the terminal switches from the first master node to the communication device.
  • the incremental configuration information includes configuration information that is different between any candidate PSCell in the second PSCell list and the configuration information of the original PSCell.
  • the communication device 90 is presented in the form of dividing various functional modules in an integrated manner.
  • the "module” here can refer to a specific ASIC, circuit, processor and memory that executes one or more software or firmware programs, integrated logic circuit, and/or other devices that can provide the above-mentioned functions.
  • the communication device 90 may adopt the form shown in FIG. 2.
  • the processor 201 in FIG. 2 may invoke the computer execution instructions stored in the memory 203 to enable the communication device 90 to execute the communication method in the foregoing method embodiment.
  • the functions/implementation process of the receiving unit 901 and the processing unit 902 in FIG. 9 may be implemented by the processor 201 in FIG. 2 calling a computer execution instruction stored in the memory 203.
  • the function/implementation process of the processing unit 902 in FIG. 9 may be implemented by the processor 201 in FIG. 2 calling a computer execution instruction stored in the memory 203
  • the function/implementation process of the receiving unit 901 in FIG. 9 may be implemented as shown in FIG. 2 in the communication interface 204 to achieve.
  • the communication device 90 provided in this embodiment can execute the above-mentioned communication method, the technical effects that can be obtained can refer to the above-mentioned method embodiment, and will not be repeated here.
  • FIG. 10 shows a schematic structural diagram of a communication device 100.
  • the communication device 100 may be a first candidate secondary node or a chip or a system on a chip in the first candidate secondary node, or other combination devices, components, etc. that can realize the functions of the first candidate secondary node.
  • the communication device 100 may be used to execute The function of the first candidate secondary node involved in the above embodiment.
  • the communication device 100 shown in FIG. 10 includes: a receiving unit 1001 and a processing unit 1002.
  • the receiving unit 1001 is configured to receive a first release request message from a first master node, where the first release request message is used to request to release the PSCell configured by the communication device for the first master node, and to instruct the communication device to reserve
  • the communication device is the node to which the first candidate PSCell that is included in the first PSCell list and the second PSCell list belongs
  • the first PSCell list includes the configuration of the first master node for the terminal
  • the second PSCell list includes one or more candidate PSCells configured by the second master node for the terminal, and the second master node is the target master node for handover of the terminal.
  • the processing unit 1002 is configured to release the PSCell configured by the communication device for the first master node according to the first release request message and retain the context between the communication device and the terminal.
  • the first release request message includes the identity of the communication device or the identity of the PSCell of the communication device.
  • the communication device 100 is presented in the form of dividing various functional modules in an integrated manner.
  • the "module” here can refer to a specific ASIC, circuit, processor and memory that executes one or more software or firmware programs, integrated logic circuit, and/or other devices that can provide the above-mentioned functions.
  • the communication device 100 may adopt the form shown in FIG. 2.
  • the processor 201 in FIG. 2 may invoke the computer-executable instructions stored in the memory 203 to enable the communication device 100 to execute the communication method in the foregoing method embodiment.
  • the functions/implementation process of the receiving unit 1001 and the processing unit 1002 in FIG. 10 may be implemented by the processor 201 in FIG. 2 calling a computer execution instruction stored in the memory 203.
  • the function/implementation process of the processing unit 1002 in FIG. 10 may be implemented by the processor 201 in FIG. 2 calling a computer execution instruction stored in the memory 203, and the function/implementation process of the receiving unit 1001 in FIG. 2 in the communication interface 204 to achieve.
  • the communication device 100 provided in this embodiment can execute the above-mentioned communication method, the technical effects that can be obtained can refer to the above-mentioned method embodiment, and will not be repeated here.
  • FIG. 11 shows a schematic structural diagram of a communication device 110.
  • the communication device 110 may be a terminal or a chip or a system on a chip in the terminal, or other combination devices or components that can realize the above-mentioned terminal functions, and the communication device 110 may be used to perform the functions of the terminal involved in the above-mentioned embodiments.
  • the communication device 110 shown in FIG. 11 includes: a processing unit 1101 and a receiving unit 1102.
  • the processing unit 1101 is configured to obtain first configuration information of the target PSCell, where the first configuration information includes the configuration information of the target PSCell when the master node configures the target PSCell as a candidate PSCell of the terminal; the receiving unit 1102 is configured to receive data from The first message of the master node, where the first message includes the identity of the target PSCell or the identity of the secondary cell group to which the target PSCell belongs; the processing unit 1101 is further configured to determine the The second configuration information of the target PSCell, where the second configuration information includes the configuration information of the target PSCell when the master node determines that the target PSCell is the PSCell of the terminal; the processing unit 1101 is further configured to compare the second configuration information with the The secondary node to which the target PSCell belongs establishes a connection.
  • the first message further includes the incremental configuration of the target PSCell, and the incremental configuration includes the difference between the first configuration information and the second configuration information Configuration information.
  • the communication device 110 is presented in the form of dividing various functional modules in an integrated manner.
  • the "module” here can refer to a specific ASIC, circuit, processor and memory that executes one or more software or firmware programs, integrated logic circuit, and/or other devices that can provide the above-mentioned functions.
  • the communication device 110 may adopt the form shown in FIG. 2.
  • the processor 201 in FIG. 2 may invoke the computer-executable instructions stored in the memory 203 to enable the communication device 110 to execute the communication method in the foregoing method embodiment.
  • the functions/implementation process of the processing unit 1101 and the receiving unit 1102 in FIG. 11 may be implemented by the processor 201 in FIG. 2 calling a computer execution instruction stored in the memory 203.
  • the function/implementation process of the processing unit 1101 in FIG. 11 may be implemented by the processor 201 in FIG. 2 calling a computer execution instruction stored in the memory 203
  • the function/implementation process of the receiving unit 1102 in FIG. 11 may be implemented as shown in FIG. 2 in the communication interface 204 to achieve.
  • the communication device 110 provided in this embodiment can execute the above-mentioned communication method, the technical effects that can be obtained can refer to the above-mentioned method embodiment, and will not be repeated here.
  • FIG. 12 shows a schematic structural diagram of a communication device 120.
  • the communication device 120 may be a master node or a chip or a system on a chip in the master node, or other combination devices, components, etc. that can realize the functions of the master node. Function.
  • the communication device 120 shown in FIG. 12 includes: a sending unit 1201.
  • the sending unit 1201 is configured to send first configuration information of the target PSCell to the terminal, where the first configuration information includes the configuration information of the target PSCell when the master node configures the target PSCell as a candidate PSCell of the terminal; the sending unit 1201 also Used to send a first message to the terminal, the first message including the identifier of the target PSCell or the identifier of the secondary node to which the target PSCell belongs, and the first message is used to determine the second configuration information of the target PSCell with the first configuration information
  • the second configuration information includes configuration information of the target PSCell when the master node determines that the target PSCell is the PSCell of the terminal.
  • the first message further includes the incremental configuration of the target PSCell, and the incremental configuration includes the difference between the first configuration information and the second configuration information Configuration information.
  • the communication device 120 is presented in the form of dividing various functional modules in an integrated manner.
  • the "module” here can refer to a specific ASIC, circuit, processor and memory that executes one or more software or firmware programs, integrated logic circuit, and/or other devices that can provide the above-mentioned functions.
  • the communication device 120 may adopt the form shown in FIG. 2.
  • the processor 201 in FIG. 2 may invoke the computer-executable instructions stored in the memory 203 to enable the communication device 120 to execute the communication method in the foregoing method embodiment.
  • the function/implementation process of the sending unit 1201 in FIG. 12 may be implemented by the processor 201 in FIG. 2 calling a computer execution instruction stored in the memory 203.
  • the function/implementation process of the sending unit 1201 in FIG. 12 may be implemented through the communication interface 204 in FIG. 2.
  • the communication device 120 provided in this embodiment can perform the above-mentioned communication method, the technical effects that can be obtained can refer to the above-mentioned method embodiment, and will not be repeated here.
  • FIG. 13 shows a schematic diagram of the composition of a communication system.
  • the communication system 130 may include: a terminal 1301, a primary node 1302, a primary node 1303, and a candidate secondary node 1304. It should be noted that FIG. 13 is only an exemplary drawing, and the embodiment of the present application does not limit the network elements included in the communication system 130 shown in FIG. 13 and the number of network elements.
  • the terminal 1301 has the function of the communication device 70 shown in FIG. 7, and can be used to receive the first message of the master node 1302, and add a target PSCell or change the target PSCell from the original PSCell according to the first message and the first configuration information. .
  • the master node 1302 has the function of the communication device 80 shown in FIG. 8 and can be used to send a second message to the master node 1303, receive a third message from the master node 1303, and send a first message to the terminal 1301 according to the third message.
  • the master node 1303 has the function of the communication device 90 shown in FIG. 9 and can be used to receive the second message from the master node 1302, and determine according to the second message that the master node 1302 configures the terminal 1301 with the conditional PSCell add/change function, and send it to The master node 1302 sends the third message.
  • the candidate secondary node 1304 has the function of the communication device 100 shown in FIG. 10, and can be used to receive the first release request message from the primary node 1302, and release the candidate secondary node 1304 according to the first release request message to the PSCell parallel configured by the primary node 1302. The context of the candidate secondary node 1304 and the terminal 1301 is retained.
  • FIG. 14 shows a schematic diagram of the composition of a communication system.
  • the communication system 140 may include: a terminal 1401 and a master node 1402. It should be noted that FIG. 14 is only an exemplary drawing, and the embodiment of the present application does not limit the network elements included in the communication system 140 shown in FIG. 14 and the number of network elements.
  • the terminal 1401 has the function of the communication device 110 shown in FIG. 11, and can be used to obtain the first configuration information of the target PSCell, receive the first message from the master node 1402, and determine the target PSCell according to the first message and the first configuration information. And establish a connection with the secondary node to which the target PSCell belongs according to the second configuration information.
  • the master node 1402 has the function of the communication device 120 shown in FIG. 12, and can be used to send the first configuration information of the target PSCell to the terminal 1401, and send the first message to the terminal 1401.
  • the communication system 140 may further include a secondary node 1403 to which the target PSCell belongs.
  • the secondary node 1403 to which the target PSCell belongs is used to establish a connection with the terminal 1401 when the master node 1402 determines to add the target PSCell to the terminal 1401.
  • the disclosed device and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods, for example, multiple units or components may be divided. It can be combined or integrated into another device, or some features can be omitted or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate parts may or may not be physically separate.
  • the parts displayed as units may be one physical unit or multiple physical units, that is, they may be located in one place, or they may be distributed to multiple different places. . Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium.
  • the technical solutions of the embodiments of the present application are essentially or the part that contributes to the prior art, or all or part of the technical solutions can be embodied in the form of a software product, and the software product is stored in a storage medium. It includes several instructions to make a device (which may be a single-chip microcomputer, a chip, etc.) or a processor (processor) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

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Abstract

本申请实施例提供通信方法及装置，涉及无线通信领域，可以在终端执行主基站的切换后，降低目标主基站和终端进行CPAC的空口开销。该方法包括：终端接收来自第一主节点的第一消息，第一消息包括既包括在第一PSCell列表中，又包括在第二PSCell列表中的第一候选PSCell的标识，或者第一候选PSCell的配置信息的标识，或者第二PSCell列表中候选PSCell的增量配置信息；第一候选PSCell的配置信息包括第一候选PSCell的添加/变更条件和配置，第一PSCell列表包括第一主节点为终端配置的一个或者多个候选PSCell，第二PSCell列表包括第二主节点为终端配置的一个或者多个候选PSCell；终端根据第一消息和第一PSCell列表中候选PSCell的添加/变更条件和配置，添加目标PSCell或者从原始PSCell变更为目标PSCell。

Description

通信方法及装置
“本申请要求于2020年3月9日提交国家知识产权局、申请号为202010158453.2、发明名称为“通信方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中”。
技术领域
本申请实施例涉及无线通信领域，尤其涉及一种通信方法及装置。
背景技术
在无线通信技术领域中，为了提升用户的吞吐率，引入了双连接连接(dual connectivity，DC)技术。DC可以支持两个或两个以上基站同时为一个终端提供数据传输服务。这些基站中包括一个主基站，以及一个或多个辅基站。其中，主基站可以与终端建立无线资源控制(radio resource control，RRC)连接，并可以与终端之间传输RRC消息，主基站还与核心网建立控制面连接。辅基站可以与终端之间传输部分RRC消息，该部分RRC消息包括用于测量小区的信号质量的测量配置信息、或测量报告等。
终端与主基站建立RRC连接后，可以进行条件主辅小区(primary secondary cell，PSCell)添加(conditional PSCell addition，CPA)，与辅基站建立连接。终端与主基站和辅基站都建立连接后，还可以进行条件PSCell变更(conditional PSCell change，CPC)，来变更与终端连接的PSCell。然而，当具有条件PSCell添加/变更(conditional PSCell addition/change，CPAC)配置的终端执行了主基站切换，即终端从当前主基站切换为信号质量更好的目标主基站上，目标主基站和终端进行CPAC的空口开销较大。
发明内容
本申请实施例提供一种通信方法及装置，可以在终端执行主基站的切换后，降低目标主基站和终端进行CPAC的空口开销。
为达到上述目的，本申请实施例采用如下技术方案：
第一方面，本申请实施例提供一种通信方法，该方法包括：终端接收来自第一主节点的第一消息，该第一消息包括第一候选PSCell的标识，或者第一候选PSCell的配置信息的标识，第一候选PSCell包括在第一PSCell列表中，又包括在第二PSCell列表中；或者第一消息包括第二PSCell列表中候选PSCell的增量配置信息；其中，该第一候选PSCell的配置信息包括该第一候选PSCell的添加/变更条件和配置，该第一PSCell列表包括该第一主节点为该终端配置的一个或者多个候选PSCell，该第二PSCell列表包括第二主节点为该终端配置的一个或者多个候选PSCell；该终端根据该第一消息和第一配置信息，添加目标PSCell或者从原始PSCell变更为该目标PSCell，该第一配置信息包括该第一PSCell列表中候选PSCell的添加/变更条件和配置，该目标PSCell为该第二PSCell列表中的PSCell，该原始PSCell为该终端从该第一主节点切换到该第二主节点之前，该终端连接的PSCell。
上述第一方面的方法，终端可以接收来自第一主节点的第一消息，并根据第一消息和第一配置信息添加目标PSCell或者从原始PSCell变更为该目标PSCell，其中，第 一消息包括的标识或者信息的大小要小于第二PSCell列表中候选PSCell的配置信息的大小，因此，可以降低第二主节点与终端进行CPAC的空口开销。
结合第一方面，在一种可能的实施方式中，该增量配置信息包括该第二主节点、该第一主节点为该终端配置的同一候选PSCell的配置信息中的不同的配置信息，和/或，该第二PSCell列表中除该第一候选PSCell之外的各个候选PSCell的配置信息，和/或，该第二主节点确定释放的该第一PSCell列表中的候选PSCell的配置信息的标识。基于上述方法，第一消息可以不用包括第二PSCell列表中候选PSCell的全量配置信息，而是包括上述增量配置信息，因此，可以降低第二主节点与终端进行CPAC的空口开销。
结合第一方面和上述可能的实施方式，在一种可能的实施方式中，该终端根据第一消息和第一配置信息，添加目标PSCell或者从原始PSCell变更为该目标PSCell，包括：该终端根据该第一消息和该第一配置信息确定第二配置信息，该第二配置信息包括该第二PSCell列表中候选PSCell的添加/变更条件和配置；该终端根据该第二配置信息，将该第二PSCell列表中满足候选PSCell的添加/变更条件的PSCell添加为该目标PSCell，或者从该原始PSCell变更为该目标PSCell。基于上述方法，终端可以根据第一消息和第一配置信息还原出第二配置信息，并根据第二配置信息添加满足候选PSCell的添加条件的PSCell；或者，从原始PSCell变更为满足候选PSCell的变更条件的PSCell，如此，第一主节点可以不用向终端发送第二配置信息，降低了第二主节点与终端进行CPAC的空口开销。
结合第一方面和上述可能的实施方式，在一种可能的实施方式中，该第一消息包括该第二PSCell列表中候选PSCell的增量配置信息，终端根据该第一消息和该第一配置信息确定第二配置信息，包括：该终端根据该增量配置信息和该第一配置信息确定该第二配置信息。基于上述方法，终端可以根据增量配置信息和第一配置信息还原出第二配置信息，如此，第一主节点可以不用向终端发送第二配置信息，降低了第二主节点与终端进行CPAC的空口开销。
结合第一方面和上述可能的实施方式，在一种可能的实施方式中，该第一消息包括该第一候选PSCell的标识，或者该第一候选PSCell的配置信息的标识，该终端根据该第一消息和该第一配置信息确定第二配置信息，包括：该终端将该第一候选PSCell的标识，或者该第一候选PSCell的配置信息的标识对应的第一配置信息，确定为该第二配置信息。基于上述方法，当第二PSCell列表包括在第一PSCell列表中；或者第二PSCell列表和第一PSCell列表相同时，终端可以将第一候选PSCell的标识，或者该第一候选PSCell的配置信息的标识对应的第一配置信息，确定为该第二配置信息，如此，第一主节点可以不用向终端发送第二配置信息，降低了第二主节点与终端进行CPAC的空口开销。
结合第一方面和上述可能的实施方式，在一种可能的实施方式中，该第一配置信息还包括该原始PSCell的配置信息，该增量配置信息包括该第二PSCell列表中的任一候选PSCell与该原始PSCell的配置信息中不同的配置信息。基于上述方法，第一消息可以不用包括第二PSCell列表中候选PSCell的全量配置信息，而是包括上述增量配置信息，因此，可以降低第二主节点与终端进行CPAC的空口开销。
第二方面，本申请实施例提供一种通信方法，该方法包括：第一主节点向第二主节点发送第一消息，该第一消息用于指示第一PSCell列表中候选PSCell的第一配置信息，该第一配置信息包括该第一PSCell列表中候选PSCell的添加/变更条件和配置，该第一PSCell列表包括该第一主节点为终端配置的一个或者多个候选PSCell，该第二主节点为该终端切换的目标主节点；该第一主节点接收来自该第二主节点的第二消息，该第二消息是根据该第一消息得到的，该第二消息包括第一候选PSCell的标识，或者第一候选PSCell的配置信息的标识，第一候选PSCell包括在该第一PSCell列表中，又包括在第二PSCell列表中的；或者该第二消息包括该第二PSCell列表中候选PSCell的增量配置信息，该第一候选PSCell的配置信息包括该第一候选PSCell的添加/变更条件和配置，该第二PSCell列表包括该第二主节点为该终端配置的一个或者多个候选PSCell；该第一主节点根据该第二消息向该终端发送第三消息，该第三消息包括该第一候选PSCell的标识，或者该第一候选PSCell的配置信息的标识，或者该第二PSCell列表中候选PSCell的增量配置信息。
上述第二方面的方法，第一主节点可以向第二主节点发送上述用于指示第一PSCell列表中候选PSCell的第一配置信息的第一消息，并接收来自第二主节点的第二消息，其中，第二消息中包括的标识或者信息的大小要小于第二PSCell列表中候选PSCell的配置信息的大小，因此，可以降低第一主节点和第二主节点的通信开销。
结合第二方面，在一种可能的实施方式中，该增量配置信息包括该第二主节点、该第一主节点为该终端配置的同一候选PSCell的配置信息中的不同的配置信息，和/或，该第二PSCell列表中除该第一候选PScell之外的各个候选PSCell的配置信息，和/或，该第二主节点确定释放的该第一PSCell列表中的候选PSCell的配置信息的标识。基于上述方法，第二消息可以不用包括第二PSCell列表中候选PSCell的全量配置信息，而是包括上述增量配置信息，因此，可以降低第一主节点和第二主节点的通信开销。
结合第二方面和上述可能的实施方式，在一种可能的实施方式中，该方法还包括：第一主节点向该第一PSCell列表中的各个候选PSCell所属的节点发送第一释放请求消息，该第一释放请求消息用于请求释放该第一PSCell列表中的每个候选PSCell。基于上述方法，第一主节点确定终端要切换到第二主节点后，可以指示第一PSCell列表中的各个候选PSCell所属的节点释放通过第一主节点为终端配置的候选PSCell，如此，第一PSCell列表中的各个候选PSCell所属的节点可以把释放的候选PSCell配置给其他终端，节约了通信资源。
结合第二方面和上述可能的实施方式，在一种可能的实施方式中，当该第一PSCell列表中包含该第一候选PSCell，该第一释放请求消息还用于指示该第一候选PSCell所属的节点保留与该终端的上下文。基于上述方法，第二主节点配置第一候选PSCell为终端的候选PSCell时，第一候选辅节点不需要再次生成与终端的上下文，后续，若第一候选PSCell被确定为目标PSCell，第一候选辅节点可以通过保留的上下文与终端通信。
结合第二方面和上述可能的实施方式，在一种可能的实施方式中，该第一消息包括该第一PSCell列表中候选PSCell的配置信息；或者，该第一消息包括该第一PSCell 列表中候选PSCell的标识；或者，该第一消息包括该第一PSCell列表中候选PSCell所属辅小区组的标识。基于上述方法，第一主节点可以通过第一PSCell列表中候选PSCell的配置信息；或者，第一PSCell列表中候选PSCell的标识；或者，第一PSCell列表中候选PSCell所属辅小区组的标识指示第一PSCell列表中候选PSCell的第一配置信息，提高了第一主节点指示第一PSCell列表中候选PSCell的第一配置信息的多样性。
结合第二方面和上述可能的实施方式，在一种可能的实施方式中，该第一消息还包括原始PSCell的标识，该原始PSCell为该终端从该第一主节点切换到该第二主节点之前，该终端连接的PSCell。基于上述方法，第一主节点还可以向第二主节点指示原始PSCell，以便第二主节点确定为终端添加原始PSCell，或者添加其他PSCell。
结合第二方面和上述可能的实施方式，在一种可能的实施方式中，该增量配置信息包括该第二PSCell列表中的任一候选PSCell的与该原始PSCell的配置信息中不同的配置信息。基于上述方法，第二消息可以不用包括第二PSCell列表中候选PSCell的全量配置信息，而是包括上述增量配置信息，因此，可以降低第一主节点和第二主节点的通信开销。
第三方面，本申请实施例提供一种通信方法，该方法包括：第二主节点接收来自第一主节点的第一消息，该第一消息用于指示第一PSCell列表中候选PSCell的第一配置信息，该第一配置信息包括该第一PSCell列表中候选PSCell的添加/变更条件和配置，该第一PSCell列表包括该第一主节点为该终端配置的一个或者多个候选PSCell，该第二主节点为该终端切换的目标主节点；该第二主节点根据该第一消息确定该第一主节点为该终端配置了条件PSCell添加/变更功能，并向该第一主节点发送第二消息，该第二消息包括第一候选PSCell的标识，或者第一候选PSCell的配置信息的标识，第一候选PSCell包括在该第一PSCell列表中，又包括在第二PSCell列表中的；或者第二消息包括该第二PSCell列表中候选PSCell的增量配置信息，该第一候选PSCell的配置信息包括该第一候选PSCell的添加/变更条件和配置，该第二PSCell列表包括该第二主节点为该终端配置的一个或者多个候选PSCell。
上述第三方面的方法，第二主节点在接收到来自第一主节点的上述用于指示第一PSCell列表中候选PSCell的第一配置信息的第一消息，可以确定第一主节点为终端配置了条件PSCell添加/变更功能，并向第一主节点发送第二消息，其中，第二消息中包括的标识或者信息的大小要小于第二PSCell列表中候选PSCell的配置信息的大小，因此，可以降低第二主节点与第一主节点的通信开销。
结合第三方面，在一种可能的实施方式中，该增量配置信息包括该第二主节点、该第一主节点为该终端配置的同一候选PSCell的配置信息中的不同的配置信息，以及该第二PSCell列表中除该第一候选PScell之外的各个候选PSCell的配置信息，和/或，该第二主节点确定释放的该第一PSCell列表中的候选PSCell的配置信息的标识。基于上述方法，第二消息可以不用包括第二PSCell列表中候选PSCell的全量配置信息，而是包括上述增量配置信息，因此，可以降低第一主节点和第二主节点的通信开销。
结合第三方面和上述可能的实施方式，在一种可能的实施方式中，该第一消息包括该第一PSCell列表中候选PSCell的配置信息；或者，该第一消息包括该第一PSCell 列表中候选PSCell的标识；或者，该第一消息包括该第一PSCell列表中候选PSCell所属辅小区组的标识。基于上述方法，第二主节点可以通过第一PSCell列表中候选PSCell的配置信息确定第一PSCell列表中候选PSCell的第一配置信息，以便第二主节点根据第一PSCell列表中候选PSCell的第一配置信息确定第二PSCell列表中候选PSCell的配置信息；或者，第二主节点可以通过第一PSCell列表中候选PSCell的标识；或者，第一PSCell列表中候选PSCell所属辅小区组的标识确定第一PSCell列表中的候选PSCell，以便第二主节点根据上述标识确定第二PSCell列表中候选PSCell。
结合第三方面和上述可能的实施方式，在一种可能的实施方式中，该第一消息还包括原始PSCell的标识，该原始PSCell为该终端从该第一主节点切换到该第二主节点之前，该终端连接的PSCell。基于上述方法，第二主节点可以通过第一消息中的原始PSCell的标识确定第一主节点为终端添加了原始PSCell，后续，第二主节点可以为终端添加原始PSCell，或者添加其他PSCell。
结合第三方面和上述可能的实施方式，在一种可能的实施方式中，该增量配置信息包括该第二PSCell列表中的任一候选PSCell与该原始PSCell的配置信息中不同的配置信息。基于上述方法，第二消息可以不用包括第二PSCell列表中候选PSCell的全量配置信息，而是包括上述增量配置信息，因此，可以降低第一主节点和第二主节点的通信开销。
第四方面，本申请实施例提供一种通信方法，该方法包括：第一候选辅节点接收来自第一主节点的第一释放请求消息，该第一释放请求消息用于请求释放该第一候选辅节点为第一主节点配置的候选PSCell，以及用于指示该第一候选辅节点保留与终端的上下文，该第一候选辅节点为既包括在第一PSCell列表中，又包括在第二PSCell列表中的第一候选PSCell所属的节点，该第一PSCell列表包括该第一主节点为该终端配置的一个或者多个候选PSCell，该第二PSCell列表包括第二主节点为该终端配置的一个或者多个候选PSCell，该第二主节点为该终端切换的目标主节点；该第一候选辅节点根据该第一释放请求消息释放该第一候选辅节点为该第一主节点配置的PSCell并保留该第一候选辅节点与该终端的上下文。
上述第四方面的方法，第一候选辅节点在接收到来自第一主节点的第一释放请求消息，可以释放第一候选辅节点为第一主节点配置的PSCell，如此，第一候选辅节点可以把释放的PSCell配置给其他终端，节约了通信资源。
结合第四方面，在一种可能的实施方式中，该第一释放请求消息包括该第一候选辅节点的标识或者该第一候选辅节点的PSCell的标识。基于上述方法，第一候选辅节点可以根据第一候选辅节点的标识或者该第一候选辅节点的PSCell的标识释放第一候选辅节点为第一主节点配置的PSCell。
第五方面，本申请实施例提供一种通信装置，可以实现上述第一方面、或第一方面任一种可能的实施方式中的方法。该装置包括用于执行上述方法的相应的单元或部件。该装置包括的单元可以通过软件和/或硬件方式实现。该装置例如可以为终端、或者为可支持终端实现上述方法的芯片、芯片系统、或处理器等。
第六方面，本申请实施例提供一种通信装置，可以实现上述第二方面、或第二方面任一种可能的实施方式中的方法。该装置包括用于执行上述方法的相应的单元或部 件。该装置包括的单元可以通过软件和/或硬件方式实现。该装置例如可以为网络设备、或者为可支持网络设备实现上述方法的芯片、芯片系统、或处理器等。
第七方面，本申请实施例提供一种通信装置，可以实现上述第三方面、或第三方面任一种可能的实施方式中的方法。该装置包括用于执行上述方法的相应的单元或部件。该装置包括的单元可以通过软件和/或硬件方式实现。该装置例如可以为终端、或者为可支持终端实现上述方法的芯片、芯片系统、或处理器等。
第八方面，本申请实施例提供一种通信装置，可以实现上述第四方面、或第四方面任一种可能的实施方式中的方法。该装置包括用于执行上述方法的相应的单元或部件。该装置包括的单元可以通过软件和/或硬件方式实现。该装置例如可以为网络设备、或者为可支持网络设备实现上述方法的芯片、芯片系统、或处理器等。
第九方面，本申请实施例提供一种通信装置，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得该装置实现上述第一方面、或第一方面任一种可能的实施方式中所述的方法。
第十方面，本申请实施例提供一种通信装置，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得该装置实现上述第二方面、或第二方面任一种可能的实施方式中所述的方法。
第十一方面，本申请实施例提供一种通信装置，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得该装置实现上述第三方面、或第三方面任一种可能的实施方式中所述的方法。
第十二方面，本申请实施例提供一种通信装置，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得该装置实现上述第四方面、或第四方面任一种可能的实施方式中所述的方法。
第十三方面，本申请实施例提供一种通信装置，该装置用于实现上述第一方面、或第一方面任一种可能的实施方式中所述的方法。
第十四方面，本申请实施例提供一种通信装置，该装置用于实现上述第二方面、或第二方面任一种可能的实施方式中所述的方法。
第十五方面，本申请实施例提供一种通信装置，该装置用于实现上述第三方面、或第三方面任一种可能的实施方式中所述的方法。
第十六方面，本申请实施例提供一种通信装置，该装置用于实现上述第四方面、或第四方面任一种可能的实施方式中所述的方法。
第十七方面，本申请实施例提供一种计算机可读介质，其上存储有计算机程序或指令，所述计算机程序或指令被执行时使得计算机执行上述第一方面、或第一方面任一种可能的实施方式中所述的方法。
第十八方面，本申请实施例提供一种计算机可读介质，其上存储有计算机程序或指令，所述计算机程序或指令被执行时使得计算机执行上述第二方面、或第二方面任一种可能的实施方式中所述的方法。
第十九方面，本申请实施例提供一种计算机可读介质，其上存储有计算机程序或指令，所述计算机程序或指令被执行时使得计算机执行上述第三方面、或第三方面任一种可能的实施方式中所述的方法。
第二十方面，本申请实施例提供一种计算机可读介质，其上存储有计算机程序或指令，所述计算机程序或指令被执行时使得计算机执行上述第四方面、或第四方面任一种可能的实施方式中所述的方法。
第二十一方面，本申请实施例提供一种计算机程序产品，其包括计算机程序代码，所述计算机程序代码在计算机上运行时，使得计算机执行上述第一方面、或第一方面任一种可能的实施方式中所述的方法。
第二十二方面，本申请实施例提供一种计算机程序产品，其包括计算机程序代码，所述计算机程序代码在计算机上运行时，使得计算机执行上述第二方面、或第二方面任一种可能的实施方式中所述的方法。
第二十三方面，本申请实施例提供一种计算机程序产品，其包括计算机程序代码，所述计算机程序代码在计算机上运行时，使得计算机执行上述第三方面、或第三方面任一种可能的实施方式中所述的方法。
第二十四方面，本申请实施例提供一种计算机程序产品，其包括计算机程序代码，所述计算机程序代码在计算机上运行时，使得计算机执行上述第四方面、或第四方面任一种可能的实施方式中所述的方法。
第二十五方面，本申请实施例提供一种芯片，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得该芯片实现上述第一方面、或第一方面任一种可能的实施方式中所述的方法。
第二十六方面，本申请实施例提供一种芯片，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得该芯片实现上述第二方面、或第二方面任一种可能的实施方式中所述的方法。
第二十七方面，本申请实施例提供一种芯片，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得该芯片实现上述第三方面、或第三方面任一种可能的实施方式中所述的方法。
第二十八方面，本申请实施例提供一种芯片，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得该芯片实现上述第四方面、或第四方面任一种可能的实施方式中所述的方法。
第二十九方面，本申请实施例提供一种通信系统。该系统包括上述第五方面所述的装置，和/或上述第六方面所述的装置，和/或上述第七方面所述的装置，和/或上述第八方面所述的装置，或者该系统包括上述第九方面所述的装置，和/或上述第十方面所述的装置，和/或上述第十一方面所述的装置，和/或上述第十二方面所述的装置，或者该系统包括上述第十三方面所述的装置，和/或上述第十四方面所述的装置，和/或上述第十五方面所述的装置，和/或上述第十六方面所述的装置。
可以理解的，上述提供的任一种通信装置、芯片、计算机可读介质、计算机程序产品或通信系统等均用于执行上文所提供的对应的方法，因此，其所能达到的有益效果可参考对应的方法中的有益效果，此处不再赘述。
第三十方面，本申请实施例提供一种通信方法，该方法包括：终端获取目标PSCell的第一配置信息，该第一配置信息包括主节点配置该目标PSCell为该终端的候选PSCell时，该目标PSCell的配置信息；该终端接收来自该主节点的第一消息，该第一 消息包括该目标PSCell的标识或该目标PSCell所属的辅小区组的标识；该终端根据该第一消息和该第一配置信息确定该目标PSCell的第二配置信息，该第二配置信息包括该主节点确定该目标PSCell为该终端的PSCell时，该目标PSCell的配置信息；该终端根据该第二配置信息与该目标PSCell所属的辅节点建立连接。
上述第三十方面的方法，终端可以获取目标PSCell的第一配置信息，在接收到来自主节点的第一消息时，知道主节点为自己添加了目标PSCell，终端可以通过第一消息中的标识确定目标PSCell的第二配置信息并应用该第二配置信息。
结合第三十方面，在一种可能的实施方式中，若该第二配置信息与该第一配置信息不同，该第一消息还包括目标PSCell的增量配置，该增量配置包括该第一配置信息中与该第二配置信息中不同的配置信息。基于上述方法，若第二配置信息与该第一配置信息不同，上述第一消息中可以包括目标PSCell的增量配置，而不用包括目标PSCell的全量配置，如此，可以降低主节点与终端的空口开销。
第三十一方面，本申请实施例提供一种通信方法，该方法包括：主节点向终端发送目标PSCell的第一配置信息，该第一配置信息包括该主节点配置该目标PSCell为该终端的候选PSCell时，该目标PSCell的配置信息；该主节点向该终端发送第一消息，该第一消息包括目标PSCell的标识或该目标PSCell所属辅节点的标识，该第一消息用于和该第一配置信息确定该目标PSCell的第二配置信息，该第二配置信息包括该主节点确定该目标PSCell为该终端的PSCell时，该目标PSCell的配置信息。
上述第三十一方面提供的方法，主节点可以向终端发送目标PSCell的第一配置信息，在为终端添加目标PSCell后向终端发送上述第一消息，以便终端通过第一消息中的标识确定目标PSCell的第二配置信息并应用该第二配置信息。
结合第三十一方面，在一种可能的实施方式中，若第二配置信息与该第一配置信息不同，该第一消息还包括目标PSCell的增量配置，该增量配置包括该第一配置信息中与该第二配置信息中不同的配置信息。基于上述方法，若第二配置信息与该第一配置信息不同，上述第一消息中可以包括目标PSCell的增量配置，而不用包括目标PSCell的全量配置，如此，可以降低主节点与终端的空口开销。
第三十二方面，本申请实施例提供一种通信装置，该通信装置包括：处理单元和接收单元；该处理单元，用于获取目标PSCell的第一配置信息，该第一配置信息包括主节点配置该目标PSCell为该终端的候选PSCell时，该目标PSCell的配置信息；该接收单元，用于接收来自该主节点的第一消息，该第一消息包括该目标PSCell的标识或该目标PSCell所属的辅小区组的标识；该处理单元，还用于根据该第一消息和该第一配置信息确定该目标PSCell的第二配置信息，该第二配置信息包括该主节点确定该目标PSCell为该终端的PSCell时，该目标PSCell的配置信息；该处理单元，还用于根据该第二配置信息与该目标PSCell所属的辅节点建立连接。
结合第三十二方面，在一种可能的实施方式中，若该第二配置信息与该第一配置信息不同，该第一消息还包括目标PSCell的增量配置，该增量配置包括该第一配置信息中与该第二配置信息中不同的配置信息。
第三十三方面，本申请实施例提供一种通信装置，该通信装置包括：发送单元；该发送单元，用于向终端发送目标PSCell的第一配置信息，该第一配置信息包括该主 节点配置该目标PSCell为该终端的候选PSCell时，该目标PSCell的配置信息；该发送单元，还用于向该终端发送第一消息，该第一消息包括目标PSCell的标识或该目标PSCell所属辅节点的标识，该第一消息用于和该第一配置信息确定该目标PSCell的第二配置信息，该第二配置信息包括该主节点确定该目标PSCell为该终端的PSCell时，该目标PSCell的配置信息。
结合第三十三方面，在一种可能的实施方式中，若该第二配置信息与该第一配置信息不同，该第一消息还包括目标PSCell的增量配置，该增量配置包括该第一配置信息中与该第二配置信息中不同的配置信息。
第三十四方面，本申请实施例提供一种通信装置，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得该装置实现上述第三十方面、或第三十方面任一种可能的实施方式中所述的方法。
第三十五方面，本申请实施例提供一种通信装置，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得该装置实现上述第三十一方面、或第三十一方面任一种可能的实施方式中所述的方法。
第三十六方面，本申请实施例提供一种通信装置，该装置用于实现上述第三十方面、或第三十方面任一种可能的实施方式中所述的方法。
第三十七方面，本申请实施例提供一种通信装置，该装置用于实现上述第三十一方面、或第三十一方面任一种可能的实施方式中所述的方法。
第三十八方面，本申请实施例提供一种计算机可读介质，其上存储有计算机程序或指令，所述计算机程序或指令被执行时使得计算机执行上述第三十方面、或第三十方面任一种可能的实施方式中所述的方法。
第三十九方面，本申请实施例提供一种计算机可读介质，其上存储有计算机程序或指令，所述计算机程序或指令被执行时使得计算机执行上述第三十一方面、或第三十一方面任一种可能的实施方式中所述的方法。
第四十方面，本申请实施例提供一种计算机程序产品，其包括计算机程序代码，所述计算机程序代码在计算机上运行时，使得计算机执行上述第三十方面、或第三十方面任一种可能的实施方式中所述的方法。
第四十一方面，本申请实施例提供一种计算机程序产品，其包括计算机程序代码，所述计算机程序代码在计算机上运行时，使得计算机执行上述第三十一方面、或第三十一方面任一种可能的实施方式中所述的方法。
第四十二方面，本申请实施例提供一种芯片，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得该芯片实现上述第三十方面、或第三十方面任一种可能的实施方式中所述的方法。
第四十三方面，本申请实施例提供一种芯片，包括：处理器，所述处理器与存储器耦合，所述存储器用于存储程序或指令，当所述程序或指令被所述处理器执行时，使得该芯片实现上述第三十一方面、或第三十一方面任一种可能的实施方式中所述的方法。
第四十四方面，本申请实施例提供一种通信系统。该系统包括上述第三十二方面所述的装置和/或上述第三十三方面所述的装置，或者该系统包括上述第三十四方面所述的装置和/或上述第三十五方面所述的装置，或者该系统包括上述第三十六方面所述的装置和/或上述第三十七方面所述的装置。
可以理解的，上述提供的任一种通信装置、芯片、计算机可读介质、计算机程序产品或通信系统等均用于执行上文所提供的对应的方法，因此，其所能达到的有益效果可参考对应的方法中的有益效果，此处不再赘述。
附图说明
图1为本申请实施例提供的通信系统架构示意图；
图2为本申请实施例提供的通信装置的硬件结构示意图；
图3为本申请实施例提供的通信方法的流程示意图一；
图4为本申请实施例提供的通信方法的流程示意图二；
图5为本申请实施例提供的通信方法的流程示意图三；
图6为本申请实施例提供的通信方法的流程示意图四；
图7为本申请实施例提供的通信装置的结构示意图一；
图8为本申请实施例提供的通信装置的结构示意图二；
图9为本申请实施例提供的通信装置的结构示意图三；
图10为本申请实施例提供的通信装置的结构示意图四；
图11为本申请实施例提供的通信装置的结构示意图五；
图12为本申请实施例提供的通信装置的结构示意图六；
图13为本申请实施例提供的通信系统的组成示意图一；
图14为本申请实施例提供的通信系统的组成示意图二。
具体实施方式
下面结合附图对本申请实施例的实施方式进行详细描述。
本申请实施例提供的方法可用于各种双连接多制式双连接(multiple RAT dual connectivity，MR-DC)架构。例如，第四代(4th generation，4G)通信系统与第五代(5th generation，5G)通信系统的双连接、5G通信系统与4G通信系统的双连接，或者5G通信系统与5G通信系统的双连接等等。
其中，4G通信系统与5G通信系统的双连接可以包括：演进通用陆地无线接入(evolved universal terrestrial radio access，E-UTRA)系统和新无线(new radio，NR)系统的双连接(E-UTRA-NR dual connectivity，EN-DC)，和5G核心网下的E-UTRA系统和NR系统的双连接(NG-RAN E-UTRA-NR dual connectivity，NGEN-DC)等。其中，EN-DC也可以称为选项3系列(option 3series)。EN-DC是以长期演进(long term evolution，LTE)基站，例如eNB，作为主节点(master node，MN)或主基站，以NR基站，例如gNB，作为辅节点(secondary node，SN)或辅基站的DC，并且MN和SN分别可以与演进分组核心(evolved packet core，EPC)网有数据面连接，即4G核心网，为终端与EPC之间的数据提供空口传输资源。NGEN-DC也可以称为选项7系列(option 7series)。NGEN-DC是以LTE基站，例如ng-eNB，作为MN，以NR基站，例如gNB，作为SN的DC，与EN-DC不同的是，NGEN-DC中，MN和SN都 连接5G核心网(5G core network，5GC)，为终端与5GC之间的数据提供空口传输资源。
5G通信系统与4G通信系统的双连接可以包括NR系统和E-UTRA系统的双连接(NR-E-UTRA dual connectivity，NE-DC)等。NE-DC也可以称为选项4系列(option 4 series)。NE-DC是以NR基站，例如gNB，作为MN，以LTE基站，例如ng-eNB，作为SN，并且MN和SN分别可以与5GC有数据面连接，为终端与5GC之间的数据提供空口传输资源。
5G通信系统与5G通信系统的双连接可以包括NR系统与NR系统的DC。NR系统与NR系统的DC中，MN和SN都为NR的基站。
下面仅以图1所示通信系统10为例，对本申请实施例提供的方法进行描述。
如图1所示，为本申请实施例提供的通信系统10的架构示意图。图1中，通信系统10可以包括网络设备101、网络设备102、网络设备105、终端103和终端104。图1仅为示意图，并不构成对本申请提供的技术方案的适用场景的限定。
图1中的网络设备，例如：网络设备101、网络设备102或网络设备105可以是任意一种具有无线收发功能的设备。包括但不限于：LTE中的演进型基站(NodeB或eNB或e-NodeB，evolutional Node B)，NR中的基站(gNodeB或gNB)或收发点(transmission receiving point/transmission reception point，TRP)，3GPP后续演进的等。基站可以是：宏基站，微基站，微微基站，小站，中继站，或，气球站等。多个基站可以支持上述提及的同一种技术的网络，也可以支持上述提及的不同技术的网络。基站可以包含一个或多个共站或非共站的TRP。网络设备还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器、集中单元(centralized unit，CU)，和/或，分布单元(distributed unit，DU)。
图1中的终端，例如：终端103或终端104是一种具有无线收发功能的设备，可以部署在陆地上，包括室内或室外、手持、穿戴或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。所述终端可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的终端、车载终端设备、无人驾驶(self driving)中的终端、辅助驾驶中的终端、远程医疗(remote medical)中的终端、智能电网(smart grid)中的终端、运输安全(transportation safety)中的终端、智慧城市(smart city)中的终端、智慧家庭(smart home)中的终端等等。本申请的实施例对应用场景不做限定。终端有时也可以称为终端设备、用户设备(user equipment，UE)、接入终端、车载终端、工业控制终端、UE单元、UE站、移动站、移动台、远方站、远程终端、移动设备、UE终端设备、无线通信设备、机器终端、UE代理或UE装置等。终端可以是固定的，也可以是移动的。
作为示例而非限定，在本申请中，终端可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备 包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
图1中，终端103或终端104可以与网络设备101和网络设备102双连接，其中，一个网络设备为MN，另一个网络设备为SN。MN中的一个或多个服务小区组成主小区组(master cell group，MCG)，MCG包括主小区(primary cell，PCell)，除了PCell，MCG还可选地包括一个或多个辅小区(secondary cell，SCell)。SN中的一个或多个服务小区组成辅小区组(secondary cell group，SCG)，SCG包括PSCell，除了PSCell，SCG还可选地包括一个或多个SCell。
在图1所示的通信系统10中，终端103或终端104可以进行CPAC。例如，终端103可以通过下述示例1进行CPA，通过下述示例2进行CPC。
示例1，以终端103与网络设备101建立了RRC连接，终端103要进行CPA，与网络设备102建立连接为例，网络设备101与终端103建立RRC连接后，可以为终端103配置一个或多个候选PSCell，该一个或多个候选PSCell包括网络设备102为终端103配置的PSCell和其他网络设备为终端103配置的PSCell；网络设备101向终端103发送该一个或多个候选PSCell的配置信息1，候选PSCell的配置信息1包括候选PSCell的配置1和添加条件。终端103接收到来自网络设备101的该一个或多个候选PSCell的配置信息1，可以检测该一个或多个候选PSCell的添加条件，在检测到至少一个满足添加条件的候选PSCell时，终端103选择其中一个候选PSCell(如网络设备102为终端配置的候选PSCell)，并应用该候选PSCell的配置。后续，终端103与该候选PSCell发起随机接入，并在候选PSCell随机接入成功之后，与网络设备101和网络设备102建立了双连接。其中，候选PSCell的配置信息1也可以称为候选PSCell的CPA配置信息1，不予限制。
可以理解的，终端103检测到多个满足添加条件的候选PSCell时，可以根据预置的策略选择一个候选PSCell，并应用该候选PSCell的配置。例如，终端103检测到多个满足添加条件的候选PSCell时，可以随机选择一个候选PSCell，并应用该候选PSCell的配置；或者，可以在该多个满足添加条件的候选PSCell中，选择信号质量最好的候选PSCell，并应用该候选PSCell的配置；或者，可以在该多个满足添加条件并且波束(beam)数量大于或等于门限值的候选PSCell中，选择波束数量最多的候选PSCell，并应用该候选PSCell的配置。上述仅是终端103选择候选PSCell的示例，终端103还可以通过其他方式选择候选PSCell，不予限制。
示例2，以终端103与网络设备101和网络设备102双连接，网络设备101为MN，网络设备102为SN，终端103要进行CPC为例，网络设备101可以为终端103配置一个或多个候选PSCell；网络设备101向终端103发送该一个或多个候选PSCell的配置信息2，候选PSCell的配置信息2包括候选PSCell的配置2和变更条件。终端103接收到来自网络设备101的该一个或多个候选PSCell的配置信息2，可以检测该一个或多个候选PSCell的变更条件，在检测到至少一个满足变更条件的候选PSCell时，终端103选择其中一个候选PSCell，并应用该候选PSCell的配置。后续，终端103与该候选PSCell发起随机接入，并在候选PSCell随机接入成功之后，与网络设备101和该 候选PSCell所属辅基站建立了双连接。其中，候选PSCell的配置信息2也可以称为候选PSCell的CPC配置信息2，不予限制。
可以理解的，终端103检测到多个满足变更条件的候选PSCell时，可以根据预置的策略选择一个候选PSCell，并应用该候选PSCell的配置。例如，终端103检测到多个满足变更条件的候选PSCell时，可以随机选择一个候选PSCell，并应用该候选PSCell的配置；或者，可以在该多个满足变更条件的候选PSCell中，选择信号质量最好的候选PSCell，并应用该候选PSCell的配置；或者，可以在该多个满足变更条件并且波束(beam)数量大于或等于门限值的候选PSCell中，选择波束数量最多的候选PSCell，并应用该候选PSCell的配置。上述仅是终端103选择候选PSCell的示例，终端103还可以通过其他方式选择候选PSCell，不予限制。
需要说明的是，在本申请实施例中，对于任一网络设备为终端配置的一个或多个候选PSCell中的任一候选PSCell，终端进行CPA时，候选PSCell的配置信息1，以及终端进行CPC时，候选PSCell的配置信息2可以统称为候选PSCell的配置信息，终端进行CPA时，候选PSCell的配置1，以及终端进行CPC时，候选PSCell的配置2可以统称为候选PSCell的配置。该候选PSCell的配置信息包括候选PSCell的配置和添加/变更条件。其中，终端进行CPA时，候选PSCell的配置用于终端添加该候选PSCell后，与该候选PSCell通信，候选PSCell的添加/变更条件包括候选PSCell的添加条件，候选PSCell的添加条件用于终端确定是否添加该候选PSCell。终端进行CPC时，候选PSCell的配置用于终端将原始PSCell变更为该候选PSCell后，与该候选PSCell通信，候选PSCell的添加/变更条件包括候选PSCell的变更条件，候选PSCell的变更条件用于终端确定是否将原始PSCell变更为该候选PSCell。
在终端103接收到了一个或多个候选PSCell的配置和添加/变更条件，但是还没有检测出满足添加/变更条件的PSCell时，终端103还可以从当前MN切换到信号质量较好的目标MN，例如，终端103可以从网络设备101切换到网络设备105上。然而，当终端103执行MN切换后，当前MN会释放为终端103配置的一个或多个候选PSCell，目标MN与终端103建立RRC连接后，可以重新为终端103配置一个或多个候选PSCell，并向终端103发送目标MN为终端配置的一个或多个候选PSCell的配置信息用于终端进行CPAC，目标MN为终端配置的一个或多个候选PSCell的配置信息包括该候选PSCell的配置和添加/变更条件。
然而，候选PSCell的配置和添加/变更条件一般包括较多的信息，例如，候选PSCell的配置包括：候选PSCell的配置的标识，和/或，候选PSCell为终端分配的随机接入资源，和/或，小区无线网络临时标识(cell radio network temporary identifier，C-RNIT)，和/或，候选PSCell的全球小区识别码(cell global identification，CGI)，和/或，候选PSCell的物理小区标识(physical cell identifier，PCI)，和/或，候选PSCell对应的频率信息。候选PSCell对应的频率信息可以包括以下一种或多种：同步信号块的绝对频率(如absoluteFrequencySSB)、参考资源模块(common RB0)的绝对频率位置(如absoluteFrequencyPointA)、频率带宽列表(如frequencyBandList)、子载波间隔(sub-carrier spacing，SCS)特定的载波列表(如scs-SpecificCarrierList)等。候选PSCell的配置还包括候选PSCell对应的资源信息，候选PSCell对应的资源信息包括以下一种 或多种：承载配置参数(radioBearerConfig)、小区组配置(cellGroupConfig)参数、物理(physical，PHY)层配置参数、媒体接入控制(media access control，MAC)层配置参数、无线链路控制(radio link control，RLC)层配置参数、分组数据汇聚层协议(packet data convergence protocol，PDCP)层配置参数、服务数据适配协议(service data adaptation protocol，SDAP)层配置参数或RRC层配置参数。候选PSCell的配置也可以称为候选PSCell的CPAC配置、候选PSCell的CPAC配置信息等，不予限制。
候选PSCell的添加/变更条件用于终端确定是否添加该候选PSCell，或者用于终端确定是否将原始PSCell变更为该候选PSCell，例如，若终端检测到候选PSCell满足该候选PSCell的添加/变更条件时，终端确定添加该候选PSCell，或者将原始PSCell变更为该候选PSCell，若终端检测到候选PSCell不满足该候选PSCell的添加/变更条件时，终端确定不添加该候选PSCell，或者不将原始PSCell变更为该候选PSCell。
可选的，候选PSCell的添加/变更条件包括候选PSCell的添加/变更条件的执行事件类型，该执行事件类型也可以称为测量事件或者上报事件等。终端可以测量该候选PSCell的信号质量，或者测量该候选PSCell的信号质量和该候选PSCell的邻区的信号质量，并根据测量结果和该执行事件类型确定是否添加该候选PSCell，或者确定是否将原始PSCell变更为该候选PSCell。
一种可能的实现方式，该执行事件类型包括一个或多个事件，例如，该执行事件类型可以包括以下事件中的一种或多种：事件A3、事件A4、事件A5、事件B1、或事件B2。其中，事件A3表示邻区信号质量比特殊小区(special cell，SpCell)信号质量大于或等于一定的偏置(offset)，事件A4表示邻区信号质量大于或等于一定门限，事件A5表示SpCell信号质量小于或等于门限1(threshold 1)，并且邻区信号质量大于或等于门限2(threshold 2)，事件B1表示跨无线接入技术(inter radio access technology，inter RAT)的邻区信号质量大于或等于一定的门限，事件B2表示PCell信号质量小于或等于门限3(threshold 3)，并且inter RAT的邻区信号质量大于或等于门限4(threshold 4)。上述事件仅是执行事件类型中事件的示例，执行事件类型还可以包括其他事件，不予限制。该执行事件类型还包括该执行事件类型中事件对应的门限值。该执行事件类型还包括满足该执行事件类型中事件的时间长度(timeToTrigger)，和/或，进入/离开该执行事件类型中事件时的迟滞值(hysteresis)等。其中，该执行事件类型中的事件可以对应一个或多个门限值，例如，事件A5对应两个门限值。该执行事件类型中的同一个事件可以对应不同的测量量，例如，事件A3可以对应A3参考信号接收功率(reference signal received power，RSRP)和A3参考信号接收质量(reference signal received quality，RSRQ)。
综上所述，一个或多个候选PSCell的配置和添加/变更条件一般较大，终端接收一个或多个候选PSCell的配置和添加/变更条件的空口开销较大。
为了解决终端切换MN，导致的目标MN与终端进行CPAC的空口开销较大的问题，本申请实施例提供一种通信方法，当前MN可以向目标MN指示当前MN为终端配置的候选PSCell的配置信息，目标MN接收到当前MN为终端配置的候选PSCell的配置信息后，目标MN为终端配置的候选PSCell可以包括全部或部分当前MN为终端配置的候选PSCell，目标MN可以根据当前MN为终端配置的候选PSCell的配置信 息，向终端发送目标MN为终端配置的候选PSCell的标识，或者目标MN为终端配置的候选PSCell的配置信息的标识，或者目标MN为终端配置的候选PSCell的增量配置信息，终端接收到目标MN为终端配置的候选PSCell的标识，或者目标MN为终端配置的候选PSCell的配置信息的标识，或者目标MN为终端配置的候选PSCell的增量配置信息，可以根据当前MN为终端配置的候选PSCell的配置信息，得到目标MN为终端配置的候选PSCell的配置信息。其中，目标MN为终端配置的候选PSCell的标识，或者目标MN为终端配置的候选PSCell的配置信息的标识，或者目标MN为终端配置的候选PSCell的增量配置信息小于目标MN为终端配置的候选PSCell的全量配置信息，因此，降低了目标MN与终端进行CPAC的空口开销。该通信方法的具体介绍可以参考下述图3-图5所示的方法。
图1所示的通信系统10仅用于举例，并非用于限制本申请的技术方案。本领域的技术人员应当明白，在具体实现过程中，通信系统10还可以包括其他设备，同时也可根据具体需要来确定网络设备和终端设备的数量，不予限制。
可选的，本申请实施例图1中的各网元，例如网络设备101、网络设备102、终端103、终端104或网络设备105，可以是一个装置内的一个功能模块。可以理解的是，该功能模块既可以是硬件设备中的元件，例如，终端或网络设备中的通信芯片或通信部件，也可以是在硬件上运行的软件功能模块，或者是平台(例如，云平台)上实例化的虚拟化功能。
例如，图1中的各网元均可以通过图2中的通信装置200来实现。图2所示为可适用于本申请实施例的通信装置的硬件结构示意图。该通信装置200可以包括至少一个处理器201，通信线路202，存储器203以及至少一个通信接口204。
处理器201可以是一个通用中央处理器(central processing unit，CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制本申请方案程序执行的集成电路。
通信线路202可包括一通路，在上述组件之间传送信息，例如总线。
通信接口204，使用任何收发器一类的装置，用于与其他设备或通信网络通信，如以太网接口，无线接入网接口(radio access network，RAN)，无线局域网接口(wireless local area networks，WLAN)等。
存储器203可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是独立存在，通过通信线路202与处理器相连接。存储器也可以和处理器集成在一起。本申请实施例提供的存储器通常可以具有非易失性。其中，存储器203用于存储执行本申请方案所涉及的计算机执行指令，并由处理器201来控制执行。处理器201用于执行存储器203中存储的计算机执行指 令，从而实现本申请实施例提供的方法。
可选的，本申请实施例中的计算机执行指令也可以称之为应用程序代码，本申请实施例对此不作具体限定。
在具体实现中，作为一种实施例，处理器201可以包括一个或多个CPU，例如图2中的CPU0和CPU1。
在具体实现中，作为一种实施例，通信装置200可以包括多个处理器，例如图2中的处理器201和处理器207。这些处理器中的每一个可以是一个单核(single-CPU)处理器，也可以是一个多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
在具体实现中，作为一种实施例，通信装置200还可以包括输出设备205和输入设备206。输出设备205和处理器201通信，可以以多种方式来显示信息。例如，输出设备205可以是液晶显示器(liquid crystal display，LCD)，发光二级管(light emitting diode，LED)显示设备，阴极射线管(cathode ray tube，CRT)显示设备，或投影仪(projector)等。输入设备206和处理器201通信，可以以多种方式接收用户的输入。例如，输入设备206可以是鼠标、键盘、触摸屏设备或传感设备等。
在具体实现中，通信装置200可以是台式机、便携式电脑、网络服务器、掌上电脑(personal digital assistant，PDA)、移动手机、平板电脑、无线终端设备、嵌入式设备或有图2中类似结构的设备。本申请实施例不限定通信装置200的类型。
下面结合图1和图2对本申请实施例提供的通信方法进行具体阐述。其中，下述实施例中的网元可以具备图2所示部件。
需要说明的是，本申请下述实施例中各个网元之间的消息名字或消息中各参数的名字等只是一个示例，具体实现中也可以是其他的名字，本申请实施例对此不作具体限定。
需要说明的是，在本申请的描述中，“第一”、或“第二”等词汇，仅用于区分描述的目的，而不能理解为指示或暗示相对重要性，也不能理解为指示或暗示顺序。本申请中的“第一消息”等具有不同编号的消息，该编号仅为用于上下文行文方便，不同的次序编号本身不具有特定技术含义，比如，第一消息，第二消息等，可以理解为是一系列消息中的一个或者任一个。可理解，在具体实施时，不同编号的消息也可以是同一种类型的消息，本申请对此不作限定。
需要说明的是，在本申请实施例中，任一PSCell的配置信息可以替换为该PSCell所属SCG的配置信息。例如，上述候选PSCell的配置信息可以替换为候选PSCell所属SCG的配置信息。其中，该任一PSCell的配置信息包括该PSCell的配置和添加/变更条件，该PSCell所属SCG的配置信息包括该PSCell的配置信息；或者，该PSCell所属SCG的配置信息包括该PSCell的配置信息和该SCG中一个或多个SCell的配置信息。该SCG中任一个SCell的配置信息包括该SCell的配置；或者，该SCG中任一个SCell的配置信息包括该SCell的配置和添加/变更条件。该PSCell的配置和添加/变更条件，以及SCell的配置和添加/变更条件的介绍可以参考上述候选PSCell的配置和添加/变更条件的描述，不予赘述。
可以理解的，本申请实施例中，终端、第一主节点、第二主节点或第一候选辅节 点可以执行本申请实施例中的部分或全部步骤，这些步骤仅是示例，本申请实施例还可以执行其它步骤或者各种步骤的变形。此外，各个步骤可以按照本申请实施例呈现的不同的顺序来执行，并且有可能并非要执行本申请实施例中的全部步骤。
如图3所示，为本申请实施例提供的一种通信方法，该通信方法包括步骤301-步骤304。
步骤301：第一主节点向第二主节点发送第一消息。
其中，第一主节点可以是图1中的网络设备101或者网络设备102，也可以是网络设备101或者网络设备102中的部件。例如，第一主节点可以是网络设备101或者网络设备102中的处理器、网络设备101或者网络设备102中的芯片或者网络设备101或者网络设备102中的芯片系统等，不予限制。
第二主节点可以是图1中的网络设备105，也可以是网络设备105中的部件。例如，第二主节点可以是网络设备105中的处理器、网络设备105中的芯片或者网络设备105中的芯片系统等，不予限制。
可选的，第一主节点为终端当前连接的主节点。第二主节点为终端切换的目标主节点。
其中，终端可以是图1中的终端103或终端104，也可以是终端103或终端104中的部件。例如，终端可以是图1中终端103或终端104的处理器，或者图1中终端103或终端104的芯片，或者图1中终端103或终端104的系统芯片等，不予限制。
该终端在从第一主节点切换到第二主节点之前，进行CPA，或者进行CPC，但是还没有检测出满足添加/变更条件的PSCell。终端进行CPA的情况可以参考下述情况1中的描述，终端进行CPC的情况可以参考下述情况2中的描述。
情况1：第一消息可以用于指示第一PSCell列表中候选PSCell的第一配置信息，或者，第一消息可以用于指示第一PSCell列表中的候选PSCell。
可选的，第一配置信息包括第一PSCell列表中候选PSCell的添加条件和配置，第一PSCell列表包括第一主节点为终端配置的一个或者多个候选PSCell。第一PSCell列表还可以称为第一PSCell集合或第一PSCell组等，不予限制。
可选的，当第一消息用于指示第一PSCell列表中候选PSCell的第一配置信息时，第一消息包括该第一配置信息；当第一消息用于指示第一PSCell列表中的候选PSCell时，第一消息包括第一PSCell列表中的候选PSCell的标识，或者第一PSCell列表中的候选PSCell所属SCG的标识或者其他用于指示第一PSCell列表中的候选PSCell的标识。
可选的，步骤301之前，第一主节点获取第一配置信息。示例性的，对于第一PSCell列表中的任一候选PSCell所属的第一候选节点，第一主节点向该第一候选节点发送第一条件辅节点添加请求消息。该第一候选节点接收到第一条件辅节点添加请求消息后，可以确认该第一条件辅节点添加请求消息，也可以拒绝这个请求。如果该第一候选节点确认该第一条件辅节点添加请求消息，则向第一主节点发送第一添加请求确认消息。第一主节点接收到第一添加请求确认消息后，可以向终端发送该第一候选节点为终端配置的PSCell的配置信息，并接收来自终端的第一验证完成消息，第一候选节点为终端配置的PSCell的配置信息包括第一候选节点为终端配置的PSCell的配置和添加条 件。
其中，第一条件辅节点添加请求消息可以用于请求第一候选节点为终端预先配置PSCell的配置信息。第一条件辅节点添加请求消息还用于指示该第一候选节点为终端配置的PSCell的配置信息用于条件辅节点的添加。
第一条件辅节点添加请求消息可以包括该第一候选节点的测量结果，例如，该第一候选节点的小区的信号质量的测量结果。该第一候选节点的测量结果可以作为该第一候选节点为终端配置PSCell的配置信息的参考。
可选的，第一条件辅节点添加请求消息是辅节点添加请求(SN addition request)消息中增加条件添加指示之后的消息，或者第一条件辅节点添加请求消息是一个新增的消息。条件添加指示可以是1比特指示信息，例如，当条件添加指示为1时，辅节点添加请求消息可以用于指示该第一候选节点为终端配置的PSCell的配置信息用于条件辅节点的添加。
其中，第一添加请求确认消息包括第一RRC容器(container)。第一候选节点为终端配置的PSCell的添加条件是第一主节点确定的，或者是第一候选节点确定的，或者二者协商确定的。当第一候选节点为终端配置的PSCell的添加条件是第一主节点确定的，第一RRC容器包含第一候选节点为终端配置的PSCell的配置。当第一候选节点为终端配置的PSCell的添加条件是第一候选节点确定的，第一RRC容器包含第一候选节点为终端配置的PSCell的配置和添加条件。上述第一RRC容器包含的信息包括在由第一候选节点生成的RRC消息中，后续，该RRC消息由第一主节点转发给终端。
其中，第一验证完成消息用于指示终端可以应用第一候选节点为终端配置的PSCell的配置信息。
情况2：第一消息可以用于指示第一PSCell列表中候选PSCell的第一配置信息和原始PSCell，或者，第一消息可以用于指示第一PSCell列表中的候选PSCell和原始PSCell。
可选的，第一配置信息包括第一PSCell列表中候选PSCell的变更条件和配置。第一PSCell列表的介绍可以参考上述情况1中所述，不予赘述。
可选的，当第一消息用于指示第一PSCell列表中候选PSCell的第一配置信息和原始PSCell时，第一消息包括该第一配置信息和原始PSCell的标识；当第一消息用于指示第一PSCell列表中的候选PSCell和原始PSCell时，第一消息包括第一PSCell列表中的候选PSCell的标识原始PSCell的标识，或者第一PSCell列表中的候选PSCell所属SCG的标识和原始PSCell的标识，或者其他用于指示第一PSCell列表中的候选PSCell的标识和原始PSCell的标识。原始PSCell为终端从第一主节点切换到第二主节点之前，终端连接的PSCell。第一消息还包括原始PSCell所属节点与终端的接口标识(如，SN UE XnAP ID)，以EN-DC为例，SN UE XnAP ID可以为SN UE X2AP ID。
可选的，步骤301之前，第一主节点获取第一配置信息。第一主节点获取第一配置信息的过程可以参考上述情况1中所述，不同的是，第一候选节点为终端配置的PSCell的配置信息包括第一候选节点为终端配置的PSCell的配置和变更条件，并且第 一主节点接收到第一添加请求确认消息后，可以向终端发送该第一候选节点为终端配置的PSCell的配置信息，也可以向终端发送第一候选节点为终端配置的PSCell的配置信息与原始PSCell的配置信息中不同的配置信息。
可以理解的，对于第一PSCell列表中的候选PSCell，第一主节点要向终端发送第一增量配置信息，第一增量配置信息包括第一PSCell列表中的候选PSCell所属节点为终端配置的PSCell的配置信息与原始PSCell的配置信息中不同的配置信息。示例性的，第一增量配置信息包括添加修改列表(ToAddModList)和/或释放列表(ToReleaseList)。其中，添加修改列表包括第一PSCell列表中与原始PSCell的配置信息不同的候选PSCell的配置信息，释放列表包括相对于原始PSCell的配置信息，第一PSCell列表中候选PSCell要释放的配置信息。应理解，若第一PSCell列表中的某个或某几个候选PSCell的配置信息与原始PSCell的配置信息相同，则第一增量配置信息中可以不包括该某个或某几个候选PSCell的配置信息。
例如，若原始PSCell的配置信息包括数据承载1、数据承载2和数据承载3，第一PSCell列表包括候选PSCell 1、候选PSCell 2和候选PSCell 3，其中，候选PSCell 1的配置信息包括数据承载1和数据承载2，候选PSCell 2的配置信息包括数据承载1和数据承载4，候选PSCell 3的配置信息包括数据承载1数据承载2和数据承载3，则第一增量配置信息可以如表1所示；或者，第一增量配置信息可以如表2所示。表1中，第一增量配置信息包括添加修改列表和释放列表，其中，添加修改列表包括数据承载1和数据承载4，释放列表包括数据承载3。表2中，第一增量配置信息包括添加修改列表，其中，添加修改列表包括数据承载1和数据承载4，以及数据承载1和数据承载2。可以理解的，表1和表2所示的第一增量配置信息都未包括候选PSCell 3的配置信息，则表示候选PSCell 3的配置信息与原始PSCell的配置信息相同。
表1
Figure PCTCN2021077851-appb-000001
表2
Figure PCTCN2021077851-appb-000002
可以理解的，上述表1和表2仅是第一增量配置信息的示例，第一增量配置信息还可以是其他的形式，不予限制。
可以理解的，上述第一配置信息还可以是原始PSCell所属的节点获取并发送给终端的。原始PSCell所属的节点获取第一配置信息，并向终端发送第一配置信息的过程 可以参考第一主节点获取第一配置信息，并向终端发送第一配置信息的描述，不予赘述。
可选的，对于上述情况1和情况2，第一消息为切换请求(handover request)消息。
步骤302：第二主节点接收来自第一主节点的第一消息，根据第一消息确定第一主节点为终端配置了CPAC功能，并向第一主节点发送第二消息。
其中，第二消息包括第二RRC容器。该第二RRC容器包含第一候选PSCell的标识，或者该第一候选PSCell的配置信息的标识，或者第二PSCell列表中候选PSCell的第二增量配置信息。上述第二RRC容器包含的标识或者信息包括在由第二主节点生成的RRC消息中，后续，该RRC消息由第一主节点转发给终端。第一候选PSCell既包括在第一PSCell列表中，又包括在第二PSCell列表中。第一候选PSCell的配置信息的标识用于标识第一候选PSCell的配置信息。可以理解的，第一候选PSCell可以为0个，一个或多个，不予限制。
下面分别针对步骤301中的情况1和情况2介绍步骤302。
对于步骤301中的情况1，第二主节点根据第一消息确定第一主节点为终端配置了CPA功能，并为终端添加第二PSCell列表中的候选PSCell。其中，第二PSCell列表包括第二主节点为终端配置的一个或者多个候选PSCell。第二PSCell列表还可以称为第二PSCell集合或第二PSCell组等，不予限制。
示例性的，对于第二PSCell列表中的任一候选PSCell所属的第二候选节点，第二主节点在确定第一主节点为终端配置了CPA功能之后，向第二候选节点发送第二条件辅节点添加请求消息，第二候选节点接收到第二条件辅节点添加请求消息后，可以确认该第二条件辅节点添加请求消息，也可以拒绝这个请求。如果第二候选节点确认第二条件辅节点添加请求消息，则向第二主节点发送第二添加请求确认消息。其中，第二条件辅节点添加请求消息和第二添加请求确认消息的介绍可以参考上述步骤301中第一条件辅节点添加请求消息和第一添加请求确认消息的描述，不予赘述。
可选的，第二主节点根据第一消息和第二PSCell列表确定第二消息。
一种可能的实现方式，当第一消息用于指示第一PSCell列表中候选PSCell的第一配置信息，第二主节点根据第一配置信息确定第二PSCell列表和第二配置信息，并根据第一配置信息、第二PSCell列表和第二配置信息确定第二消息，其中，第二配置信息包括第二PSCell列表中候选PSCell的添加条件和配置，第二消息中的第二RRC容器包含第二PSCell列表中候选PSCell的第二增量配置信息。第二增量配置信息包括第二主节点、第一主节点为终端配置的同一候选PSCell的配置信息中的不同的配置信息，和/或，第二PSCell列表中除第一候选PSCell之外的各个候选PSCell的配置信息，和/或，第二主节点确定释放的第一PSCell列表中的候选PSCell的配置信息的标识。
示例性的，第二增量配置信息包括添加修改列表(ToAddModList)和/或释放列表(ToReleaseList)，添加修改列表包括第二主节点、第一主节点为终端配置的同一候选PSCell的配置信息中的不同的配置信息，和/或，第二PSCell列表中除第一候选PScell之外的各个候选PSCell的配置信息，释放列表包括第二主节点确定释放的第一PSCell 列表中的候选PSCell的配置信息的标识。对于包括在第一PSCell列表中，但未包括在第二PSCell列表中的第二候选PSCell，若释放列表中未包括第二候选PSCell的配置信息的标识，则第二候选PSCell的第二配置信息与第一配置信息相同。
例如，以第一消息包括的信息如表3所示，第二主节点确定的第二PSCell列表包括候选PSCell 2、候选PSCell 3和候选PSCell 4，候选PSCell 2的第二配置信息包括配置信息4，候选PSCell 3的第二配置信息包括配置信息3，候选PSCell 4的第二配置信息包括配置信息5为例，表3中候选PSCell 1的第一配置信息包括配置信息1，候选PSCell 2的第一配置信息包括配置信息2，候选PSCell 3的第一配置信息包括配置信息3，则该第二增量配置信息可以如表4所示，表4中，第二增量配置信息包括添加修改列表和释放列表，添加修改列表包括配置信息4和配置信息5，配置信息4为候选PSCell 2的第二配置信息与第一配置信息中不同的配置信息，配置信息5为候选PSCell 4的第二配置信息，释放列表包括候选PSCell 1，可以理解的，第二增量配置信息中未包括候选PSCell 3的相关信息，则表示候选PSCell 3的第二配置信息与第一配置信息相同。
表3
第一PSCell列表中的候选PSCell的配置信息的标识 第一配置信息
候选PSCell 1的配置信息的标识 配置信息1
候选PSCell 2的配置信息的标识 配置信息2
候选PSCell 3的配置信息的标识 配置信息3
表4
Figure PCTCN2021077851-appb-000003
可以理解的，表4仅是第二增量配置信息的示例，第二增量配置信息还可以是其他的形式，不予限制。
另一种可能的实现方式，当第一消息用于指示第一PSCell列表中的候选PSCell，第二主节点根据第一PSCell列表确定第二候选PSCell列表，并根据第二候选PSCell列表确定第二消息，第二消息中的第二RRC容器包含第一候选PSCell的标识，或者，第一候选PSCell所属SCG的标识，或者第一候选PSCell的配置信息的标识，或者其他用于指示第二PSCell列表中的候选PSCell的标识。在这种情况下，第二PSCell列表中的PSCell包括在第一PSCell列表中，或者，第二PSCell列表与第一PSCell列表相同，且第二PSCell列表中候选PSCell的添加/变更条件和配置与第一PSCell列表中对应的候选PSCell相同。可以理解的，第一候选PSCell的配置信息的标识可以是第一主节点发送给第二主节点的，也可以是第一候选PSCell发送给第二主节点的。
对于步骤301中的情况2，第二主节点根据第一消息确定第一主节点为终端配置了CPC功能，并为终端添加第二PSCell列表中的候选PSCell。其中，第二PSCell列表的介绍以及第二主节点添加第二PSCell列表中的候选PSCell的过程可以参考步骤302中情况1中的描述，不同的是，第二候选节点为终端配置的PSCell的配置信息包 括第二候选节点为终端配置的PSCell的配置和变更条件。
可选的，第二主节点根据第一消息和第二PSCell列表确定第二消息。这一过程的具体介绍可以参考步骤302中情况1中的描述，不同的是，当第一消息用于指示第一PSCell列表中候选PSCell的第一配置信息，第二RRC容器包含的第二增量配置信息中的信息还可以被替换为：第二PSCell列表中的候选PSCell与原始PSCell的配置信息中不同的配置信息。
示例性的，该第二增量配置信息包括添加修改列表(ToAddModList)和/或释放列表(ToReleaseList)。其中，添加修改列表包括第二PSCell列表中的候选PSCell与原始PSCell的配置信息中不同的配置信息，释放列表包括相对于原始PSCell的配置信息，第二PSCell列表中候选PSCell要释放的配置信息。应理解，若第二PSCell列表中的某个或某几个候选PSCell的配置信息与原始PSCell的配置信息相同，则第二增量配置信息中可以不包括该某个或某几个候选PSCell的配置信息。例如，若原始PSCell的配置信息包括数据承载1、数据承载2和数据承载3，第二PSCell列表包括候选PSCell 1、候选PSCell 2和候选PSCell 3，候选PSCell 1的第二配置信息包括数据承载1、数据承载2和数据承载3，候选PSCell 2的第二配置信息包括数据承载1和数据承载2，候选PSCell 3的第二配置信息包括数据承载1和数据承载4，则该第二增量配置信息可以如表5所示；或者，第二增量配置信息可以如表6所示。表5中，第二增量配置信息包括添加修改列表和释放列表，添加修改列表包括数据承载1和数据承载4，释放列表包括数据承载3。表6中，第二增量配置信息包括添加修改列表，其中，添加修改列表包括数据承载1和数据承载2，以及数据承载1和数据承载4。可以理解的，表5和表6所示的第二增量配置信息都未包括候选PSCell 1的第二配置信息，则表示候选PSCell 1的第二配置信息与原始PSCell的配置信息相同。
表5
Figure PCTCN2021077851-appb-000004
表6
Figure PCTCN2021077851-appb-000005
可以理解的，上述表5和表6仅是第二增量配置信息的示例，第二增量配置信息还可以是其他的形式，不予限制。
可以理解的，终端从第一主节点切换到第二主节点的过程中，若第二主节点确定不变更终端当前连接的PSCell，第二主节点向原始PSCell所属的节点发送SN添加请求(SN addition request)消息，并接收来自原始PSCell所属的节点的SN添加请求确认(SN addition request acknowledge)消息。其中，SN添加请求消息可以用于请求添 加原始PSCell为终端的PSCell。SN添加请求消息可以包括原始PSCell所属节点与终端的接口标识，如SN UE XnAP ID，SN UE X2ID等，以便原始PSCell所属的节点确定与终端的上下文，原始PSCell不需要重新生成与终端的上下文。SN添加请求确认消息用于向第二主节点指示原始PSCell所属的节点确定第二主节点为终端添加该原始PSCell。SN添加请求确认消息包括第三增量配置信息或全量配置信息。该第三增量配置信息包括终端切换到第二主节点之后，原始PSCell的配置信息和终端切换到第二主节点之前，原始PSCell的配置信息中不同的配置信息。该全量配置信息包括终端切换到第二主节点之后，原始PSCell的配置信息。
可选的，对于上述情况1和情况2，第二消息为切换请求确认(handover request acknowledge)消息。
步骤303：第一主节点接收来自第二主节点的第二消息，并向终端发送第三消息。
可选的，第三消息包括第一候选PSCell的标识，或者该第一候选PSCell的配置信息的标识，或者第二PSCell列表中候选PSCell的第二增量配置信息。其中，第一候选PSCell的标识，或者该第一候选PSCell的配置信息的标识，或者第二PSCell列表中候选PSCell的第二增量配置信息的介绍可以参考上述步骤302中的描述，不予赘述。
步骤304：终端接收来自第一主节点的第三消息，并根据第三消息和第一配置信息，添加目标PSCell或者从原始PSCell变更为目标PSCell。
其中，目标PSCell为第二PSCell列表中的候选PSCell。
下面分别针对步骤301和步骤302中的情况1和情况2介绍步骤303。
对于步骤301和步骤302中的情况1，终端根据第三消息和第一配置信息确定第二配置信息，并根据第二配置信息，将第二PSCell列表中满足候选PSCell的添加条件的PSCell添加为目标PSCell。
一种可能的实现方式，若第三消息包括第一候选PSCell的标识，或者第一候选PSCell的配置信息的标识，终端将第一候选PSCell的标识，或者第一候选PSCell的配置信息的标识对应的第一配置信息，确定为第二配置信息。
示例性的，以第一PSCell列表包括候选PSCell 1、候选PSCell 2和候选PSCell 3，第二PSCell列表包括候选PSCell 2和候选PSCell 3为例，终端可以将候选PSCell 2的第一配置信息确定为候选PSCell 2的第二配置信息，将候选PSCell 3的第一配置信息确定为候选PSCell 3的第二配置信息。
一种可能的实现方式，若第三消息包括第二PSCell列表中候选PSCell的第二增量配置信息，终端根据第二增量配置信息和第一配置信息确定第二配置信息。其中，第二PSCell列表中候选PSCell的第二增量配置信息可以参考上述步骤302中所述，不予赘述。
示例性的，终端遍历第二增量配置信息中的添加修改列表中每个候选PSCell对应的配置信息，将添加修改列表中每个候选PSCell对应的配置信息确定为该候选PSCell的第二配置信息，将包括在第一PSCell列表中，但是未包括在添加修改列表和释放列表中的候选PSCell的第一配置信息确定为该候选PSCell的第二配置信息。终端还可以删除存储的释放列表中每个候选PSCell的第一配置信息。
以表3所示的第一配置信息和表4所示的第二增量配置信息为例，第二PSCell列 表中候选PSCell的第二配置信息可以如表7所示，表7中，候选PSCell 2的第二配置信息包括配置信息4，候选PSCell 3的第二配置信息包括配置信息3，候选PSCell 4的第二配置信息包括配置信息5。终端还可以删除存储的候选PSCell 1的第一配置信息。
表7
第二PSCell列表中的候选PSCell的配置信息的标识 第二配置信息
候选PSCell 2的配置信息的标识 配置信息4
候选PSCell 3的配置信息的标识 配置信息3
候选PSCell 4的配置信息的标识 配置信息5
可选的，终端将第二PSCell列表中满足候选PSCell的添加条件的PSCell添加为目标PSCell，包括：终端确定第二PSCell列表中满足候选PSCell的添加条件的目标PSCell，并向该目标PSCell发起随机接入。
对于步骤301和步骤302中的情况2，终端根据第三消息和第一配置信息确定第二配置信息，并根据第二配置信息，从原始PSCell变更为目标PSCell。
一种可能的实现方式，若第三消息包括第一候选PSCell的标识，或者第一候选PSCell的配置信息的标识，终端将第一候选PSCell的标识，或者第一候选PSCell的配置信息的标识对应的第一配置信息，确定为第二配置信息；若第三消息包括第二PSCell列表中候选PSCell的第二增量配置信息，终端根据第二增量配置信息和第一配置信息确定第二配置信息。具体的，可以参考上述步骤303中情况1中的描述，不予赘述。
可选的，终端从原始PSCell变更为目标PSCell，包括：终端确定第二PSCell列表中满足候选PSCell的变更条件的目标PSCell，向该目标PSCell发起随机接入并释放与原始PSCell的连接。
可选的，对于上述情况1和情况2，终端释放与第一主节点的连接，向第二主节点发起随机接入，并在随机接入成功后向第二主节点发送重配置完成消息，该重配置完成消息用于指示终端切换主节点成功以及终端验证第二配置信息成功。
可选的，若终端添加目标PSCell，或者从原始PSCell变更为目标PSCell，终端向第二主节点发送确认消息，该确认消息包括目标PSCell的标识或目标PSCell所属SCG的标识。
可选的，该确认消息还包括终端发送给目标PSCell的重配置完成消息，该重配置完成消息用于指示终端添加目标PSCell成功，或者终端从原始PSCell变更为目标PSCell成功。对应的，第二主节点接收到该确认消息后，将终端发送给目标PSCell的重配置完成消息发送给目标PSCell。
基于图3所示的方法，终端可以接收来自第一主节点的第三消息，其中，第三消息包括第一候选PSCell的标识，或者第一候选PSCell的配置信息的标识，或者第二PSCell列表中候选PSCell的第二增量配置信息，终端可以根据第三消息和第一PSCell列表中候选PSCell的添加/变更条件和配置，添加目标PSCell或者从原始PSCell变更为目标PSCell。其中，第三消息包括的标识或者信息的大小要小于第二PSCell列表中候选PSCell的添加/变更条件和配置的大小，因此，可以降低第二主节点与终端进行CPAC的空口开销。
进一步可选的，在图3所示方法的一种实施方式中，第一主节点还可以向第一 PSCell列表中的各个候选PSCell所属的节点发送第一释放请求消息，以便第一主节点释放第一PSCell列表中的每个候选PSCell。如图4所示，图3所示的方法还包括步骤401。
步骤401：第一主节点向第一PSCell列表中的各个候选PSCell所属的节点发送第一释放请求消息。
其中，第一释放请求消息用于请求释放第一PSCell列表中的每个候选PSCell。
可选的，对于第一候选PSCell所属的第一候选辅节点，第一释放请求消息包含保留终端上下文的指示信息，该指示信息用于指示第一候选辅节点保留与终端的上下文，后续，第一候选辅节点不需要再生成与终端的上下文，若第一候选PSCell被确定为目标PSCell，第一候选辅节点可以通过保留的与终端的上下文与终端通信。
对应的，第一PSCell列表中的各个候选PSCell所属的节点接收来自第一主节点的第一释放请求消息。
基于图4所示方法，第一主节点确定终端要切换到第二主节点后，可以指示第一PSCell列表中的各个候选PSCell所属的节点释放通过第一主节点为终端配置的候选PSCell，如此，第一PSCell列表中的各个候选PSCell所属的节点可以把释放的候选PSCell配置给其他终端，对于第一候选PSCell所属的第一候选辅节点，第一主节点还可以指示第一候选辅节点保留与终端的上下文，因此，第二主节点配置该第一候选PSCell为终端的候选PSCell时，第一候选辅节点不需要再次生成与终端的上下文，后续，若第一候选PSCell被确定为目标PSCell，第一候选辅节点可以通过保留的上下文与终端通信。
进一步可选的，在图3所示方法的一种实施方式中，对于上述情况2，第一主节点向原始PSCell所属的节点发送第二释放请求消息，以便第一主节点释放原始PSCell。具体的，如图5所示，图4所示的方法还包括步骤501。
步骤501：第一主节点向原始PSCell所属的节点发送第二释放请求消息。
其中，第二释放请求消息用于请求释放原始PSCell。
可选的，若第二主节点确定添加原始PSCell为终端的PSCell，第二释放请求消息包括保留终端上下文的指示信息，该指示信息用于指示原始PSCell所属的节点保留与终端的上下文，后续，原始PSCell不需要再生成与终端的上下文，可以通过保留的与终端的上下文与终端通信。
对应的，原始PSCell所属的节点接收来自第一主节点的第二释放请求消息。
可以理解的，本申请不限制步骤501和步骤401的执行顺序，例如，可以先执行步骤501再执行步骤401，也可以先执行步骤401再执行步骤501。
基于图5所示方法，第一主节点确定终端要切换到第二主节点后，可以指示原始PSCell所属的节点释放原始PSCell，如此原始PSCell所属的节点可以把释放的原始PSCell配置给其他终端，若第二主节点确定添加原始PSCell为终端的PSCell，第一主节点还可以指示原始PSCell所属节点保留与终端的上下文，以便原始PSCell所属节点保留原始PSCell所属节点与终端的上下文，后续还可以通过保留的上下文与终端通信。
如图6所示，为本申请实施例提供的一种通信方法，主节点可以为终端配置一个 或多个候选PSCell，并向终端发送该一个或多个候选PSCell的配置信息，后续，若主节点为终端添加一个或多个候选PSCell中的目标PSCell时，可以通过目标PSCell的标识或者目标PSCell的增量配置向终端指示该目标PSCell。具体的，该方法包括步骤601-步骤605。
步骤601：主节点向终端发送目标PSCell的第一配置信息。
其中，主节点可以是图1中网络设备101或网络设备102，主节点也可以是图1中网络设备101或网络设备102中的部件。例如，主节点可以是图1中网络设备101或网络设备102的处理器，或者图1中网络设备101或网络设备102的芯片，或者图1中网络设备101或网络设备102的芯片系统等，不予限制。
其中，终端可以是图1中终端103或终端104，终端也可以是图1中终端103或终端104中的部件。例如，终端可以是图1中终端103或终端104的处理器，或者图1中终端103或终端104的芯片，或者终端103或终端104的芯片系统等，不予限制。
其中，目标PSCell的第一配置信息包括主节点配置目标PSCell为终端的候选PSCell时，目标PSCell的配置信息。目标PSCell的配置信息包括目标PSCell的添加/变更条件和配置。
可选的，目标PSCell包括在PSCell列表中，该PSCell列表包括主节点为终端配置的一个或多个候选PSCell。
可选的，主节点向终端发送PSCell列表中候选PSCell的第一配置信息。候选PSCell的第一配置信息包括目标PSCell的第一配置信息。
可选的，步骤601之前，主节点获取PSCell列表中候选PSCell的第一配置信息。示例性的，对于PSCell列表中的任一候选PSCell所属的第三候选节点，主节点向第三候选节点发送条件辅节点添加请求消息，该第三候选节点接收到条件辅节点添加请求消息后，可以确认该条件辅节点添加请求消息，也可以拒绝这个请求，如果该第三候选节点确认条件辅节点添加请求消息，则向主节点发送添加请求确认消息，该添加请求确认消息包括PSCell列表中候选PSCell的第一配置信息。主节点接收到该添加请求确认消息后，可以向终端发送PSCell列表中候选PSCell的第一配置信息，并接收来自终端的验证完成消息。主节点获取PSCell列表中候选PSCell的第一配置信息这一过程的具体介绍可以参考上述步骤301中，第一主节点获取第一配置信息的过程，不予赘述。
步骤602：终端获取目标PSCell的第一配置信息。
可选的，终端接收并存储来自主节点的目标PSCell的第一配置信息，当主节点确定目标PSCell为终端的PSCell时，终端从本地获取目标PSCell的第一配置信息；或者，终端接收并存储来自主节点的PSCell列表中候选PSCell的第一配置信息，当主节点确定目标PSCell为终端的PSCell时，终端从本地获取目标PSCell的第一配置信息。
步骤603：主节点向终端发送第一消息。
其中，第一消息可以用于指示主节点为终端添加目标PSCell。第一消息可以包括目标PSCell的标识，或者目标PSCell所属的SCG的标识；或者，第一消息可以包括目标PSCell的标识或目标PSCell所属的SCG的标识，以及目标PSCell的增量配置；或者，第一消息包括目标PSCell配置信息的标识和目标PSCell的增量配置。其中，该 增量配置包括目标PSCell的第二配置信息与目标PSCell的第一配置信息中不同的配置信息。第二配置信息包括主节点确定目标PSCell为终端的PSCell时，目标PSCell的配置信息。
示例性的，若主节点确定目标PSCell为终端的PSCell时，目标PSCell的第二配置信息与目标PSCell的第一配置信息相同，第一消息包括目标PSCell的标识或目标PSCell所属的SCG的标识，或者其他用于指示目标PSCell的标识。若目标PSCell的第二配置信息与目标PSCell的第一配置信息不相同，第一消息包括目标PSCell的标识或目标PSCell所属的SCG的标识，以及目标PSCell的增量配置；或者，第一消息包括目标PSCell配置信息的标识和目标PSCell的增量配置。
可选的，步骤603之前，主节点为终端添加目标PSCell。示例性的，主节点向PSCell所属节点发送SN添加请求(SN addition request)消息，并接收来自目标PSCell所属节点的SN添加请求确认(SN addition request acknowledge)消息。
其中，SN添加请求消息可以用于请求添加目标PSCell为终端的PSCell。SN添加请求确认消息用于指示目标PSCell所属的节点确定主节点为终端添加该目标PSCell。若目标PSCell的第二配置信息与目标PSCell的第一配置信息不相同，SN添加请求确认消息包括目标PSCell的增量配置。
步骤604：终端接收来自主节点的第一消息，并根据第一消息和目标PSCell的第一配置信息确定目标PSCell的第二配置信息。
可选的，若第一消息包括目标PSCell的标识或目标PSCell所属的SCG的标识，终端将目标PSCell的标识或目标PSCell所属的SCG的标识对应的第一配置信息确定为目标PSCell的第二配置信息。
可选的，若第一消息包括目标PSCell的标识或目标PSCell所属的SCG的标识，以及目标PSCell的增量配置，终端根据目标PSCell的第一配置信息以及目标PSCell的增量配置，确定目标PSCell的第二配置信息。
步骤605：终端根据目标PSCell的第二配置信息与目标PSCell所属的辅节点建立连接。
可选的，终端根据目标PSCell的第二配置信息向目标PSCell所属的辅节点发起随机接入。
基于图6所示的方法，主节点为终端添加PSCell列表中的目标PSCell后，可以不用向终端发送目标PSCell的第二配置信息，而是向终端发送第一消息，第一消息中包括的标识或增量配置的大小，小于目标PSCell的第二配置信息的大小，因此降低了空口开销。
上述主要从各个网元之间交互的角度对本申请实施例提供的方案进行了介绍。可以理解的是，上述终端、第一主节点、第二主节点或者第一候选辅节点等为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法操作，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应 认为超出本申请的范围。
本申请实施例可以根据上述方法示例对终端、第一主节点、第二主节点或者第一候选辅节点进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
比如，以采用集成的方式划分各个功能模块的情况下，图7示出了一种通信装置70的结构示意图。该通信装置70可以为终端或者终端中的芯片或者片上系统，或其他可实现上述终端功能的组合器件、部件等，该通信装置70可以用于执行上述实施例中涉及的终端的功能。
作为一种可能的实现方式，图7所示的通信装置70包括：接收单元701和处理单元702。
接收单元701，用于接收来自第一主节点的第一消息，该第一消息包括既包括在第一主辅小区PSCell列表中，又包括在第二PSCell列表中的第一候选PSCell的标识，或者既包括在第一PSCell列表中，又包括在第二PSCell列表中的第一候选PSCell的配置信息的标识，或者该第二PSCell列表中候选PSCell的增量配置信息；其中，该第一候选PSCell的配置信息包括该第一候选PSCell的添加/变更条件和配置，该第一PSCell列表包括该第一主节点为该通信装置配置的一个或者多个候选PSCell，该第二PSCell列表包括第二主节点为该通信装置配置的一个或者多个候选PSCell。
处理单元702，用于根据该第一消息和第一配置信息，添加目标PSCell或者从原始PSCell变更为该目标PSCell，该第一配置信息包括该第一PSCell列表中候选PSCell的添加/变更条件和配置，该目标PSCell为该第二PSCell列表中的PSCell，该原始PSCell为该通信装置从该第一主节点切换到该第二主节点之前，该通信装置连接的PSCell。
可选的，该增量配置信息包括该第二主节点、该第一主节点为该通信装置配置的同一候选PSCell的配置信息中的不同的配置信息，和/或，该第二PSCell列表中除该第一候选PScell之外的各个候选PSCell的配置信息，和/或，该第二主节点确定释放的该第一PSCell列表中的候选PSCell的配置信息的标识。
可选的，处理单元702，具体用于根据该第一消息和该第一配置信息确定第二配置信息，该第二配置信息包括该第二PSCell列表中候选PSCell的添加/变更条件和配置；处理单元702，还具体用于根据该第二配置信息，将该第二PSCell列表中满足候选PSCell的添加/变更条件的PSCell添加为该目标PSCell或者从该原始PSCell变更为该目标PSCell。
可选的，该第一消息包括该第二PSCell列表中候选PSCell的增量配置信息，处理单元702，还具体用于根据该增量配置信息和该第一配置信息确定该第二配置信息。
可选的，该第一消息包括该第一候选PSCell的标识，或者该第一候选PSCell的配置信息的标识，处理单元702，还具体用于将该第一候选PSCell的标识，或者该第一候选PSCell的配置信息的标识对应的第一配置信息，确定为该第二配置信息。
可选的，该第一配置信息还包括该原始PSCell的配置信息，该增量配置信息包括该第二PSCell列表中的任一候选PSCell与该原始PSCell的配置信息中不同的配置信息。
其中，上述方法实施例涉及的各操作的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在本实施例中，该通信装置70以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定ASIC，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。在一个简单的实施例中，本领域的技术人员可以想到该通信装置70可以采用图2所示的形式。
比如，图2中的处理器201可以通过调用存储器203中存储的计算机执行指令，使得通信装置70执行上述方法实施例中的通信方法。
示例性的，图7中的接收单元701和处理单元702的功能/实现过程可以通过图2中的处理器201调用存储器203中存储的计算机执行指令来实现。或者，图7中的处理单元702的功能/实现过程可以通过图2中的处理器201调用存储器203中存储的计算机执行指令来实现，图7中的接收单元701的功能/实现过程可以通过图2中的通信接口204来实现。
由于本实施例提供的通信装置70可执行上述的通信方法，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
比如，以采用集成的方式划分各个功能模块的情况下，图8示出了一种通信装置80的结构示意图。该通信装置80可以为第一主节点或者第一主节点中的芯片或者片上系统，或其他可实现上述第一主节点功能的组合器件、部件等，该通信装置80可以用于执行上述实施例中涉及的第一主节点的功能。
作为一种可能的实现方式，图8所示的通信装置80包括：发送单元801和接收单元802。
发送单元801，用于向第二主节点发送第二消息，该第二消息用于指示第一主辅小区PSCell列表中候选PSCell的第一配置信息，该第一配置信息包括该第一PSCell列表中候选PSCell的添加/变更条件和配置，该第一PSCell列表包括该通信装置为终端配置的一个或者多个候选PSCell，该第二主节点为该终端切换的目标主节点。
接收单元802，用于接收来自该第二主节点的第三消息，该第三消息是根据该第二消息得到的，该第三消息包括既包括在该第一PSCell列表中，又包括在第二PSCell列表中的第一候选PSCell的标识，或者既包括在该第一PSCell列表中，又包括在第二PSCell列表中的第一候选PSCell的配置信息的标识，或者该第二PSCell列表中候选PSCell的增量配置信息，该第一候选PSCell的配置信息包括该第一候选PSCell的添加/变更条件和配置，该第二PSCell列表包括该第二主节点为该终端配置的一个或者多个候选PSCell。
发送单元801，还用于根据该第三消息向该终端发送第一消息，该第一消息包括该第一候选PSCell的标识，或者该第一候选PSCell的配置信息的标识，或者该第二PSCell列表中候选PSCell的增量配置信息。
可选的，该增量配置信息包括该第二主节点、该通信装置为该终端配置的同一候 选PSCell的配置信息中的不同的配置信息，和/或，该第二PSCell列表中除该第一候选PScell之外的各个候选PSCell的配置信息，和/或，该第二主节点确定释放的该第一PSCell列表中的候选PSCell的配置信息的标识。
可选的，发送单元801，还用于向该第一PSCell列表中的各个候选PSCell所属的节点发送第一释放请求消息，该第一释放请求消息用于请求释放该第一PSCell列表中的每个候选PSCell。
可选的，当该第一PSCell列表中包含该第一候选PSCell，该第一释放请求消息还用于指示该第一候选PSCell所属的节点保留与该终端的上下文。
可选的，该第二消息包括该第一PSCell列表中候选PSCell的配置信息；或者，该第二消息包括该第一PSCell列表中候选PSCell的标识；或者，该第二消息包括该第一PSCell列表中候选PSCell所属辅小区组的标识。
可选的，该第二消息还包括原始PSCell的标识，该原始PSCell为该终端从该通信装置切换到该第二主节点之前，该终端连接的PSCell。
可选的，该增量配置信息包括该第二PSCell列表中的任一候选PSCell的与该原始PSCell的配置信息中不同的配置信息。
其中，上述方法实施例涉及的各操作的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在本实施例中，该通信装置80以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定ASIC，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。在一个简单的实施例中，本领域的技术人员可以想到该通信装置80可以采用图2所示的形式。
比如，图2中的处理器201可以通过调用存储器203中存储的计算机执行指令，使得通信装置80执行上述方法实施例中的通信方法。
示例性的，图8中的发送单元801和接收单元802的功能/实现过程可以通过图2中的处理器201调用存储器203中存储的计算机执行指令来实现。或者，图8中的发送单元801和接收单元802的功能/实现过程可以通过图2中的通信接口204来实现。
由于本实施例提供的通信装置80可执行上述的通信方法，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
比如，以采用集成的方式划分各个功能模块的情况下，图9示出了一种通信装置90的结构示意图。该通信装置90可以为第二主节点或者第二主节点中的芯片或者片上系统，或其他可实现上述第二主节点功能的组合器件、部件等，该通信装置90可以用于执行上述实施例中涉及的第二主节点的功能。
作为一种可能的实现方式，图9所示的通信装置90包括：接收单元901和处理单元902。
接收单元901，用于接收来自第一主节点的第二消息，该第二消息用于指示第一主辅小区PSCell列表中候选PSCell的第一配置信息，该第一配置信息包括该第一PSCell列表中候选PSCell的添加/变更条件和配置，该第一PSCell列表包括该第一主节点为该终端配置的一个或者多个候选PSCell，该通信装置为该终端切换的目标主节点。
处理单元902，用于根据该第二消息确定该第一主节点为该终端配置了条件PSCell添加/变更功能，并向该第一主节点发送第三消息，该第三消息包括既包括在该第一PSCell列表中，又包括在第二PSCell列表中的第一候选PSCell的标识，或者既包括在该第一PSCell列表中，又包括在第二PSCell列表中的第一候选PSCell的配置信息的标识，或者该第二PSCell列表中候选PSCell的增量配置信息，该第一候选PSCell的配置信息包括该第一候选PSCell的添加/变更条件和配置，该第二PSCell列表包括该通信装置为该终端配置的一个或者多个候选PSCell。
可选的，该增量配置信息包括该通信装置、该第一主节点为该终端配置的同一候选PSCell的配置信息中的不同的配置信息，和/或，该第二PSCell列表中除该第一候选PScell之外的各个候选PSCell的配置信息，和/或，该第二主节点确定释放的该第一PSCell列表中的候选PSCell的配置信息的标识。
可选的，该第二消息包括该第一PSCell列表中候选PSCell的配置信息；或者，该第二消息包括该第一PSCell列表中候选PSCell的标识；或者，该第二消息包括该第一PSCell列表中候选PSCell所属辅小区组的标识。
可选的，该第二消息还包括原始PSCell的标识，该原始PSCell为该终端从该第一主节点切换到该通信装置之前，该终端连接的PSCell。
可选的，该增量配置信息包括该第二PSCell列表中的任一候选PSCell与该原始PSCell的配置信息中不同的配置信息。
其中，上述方法实施例涉及的各操作的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在本实施例中，该通信装置90以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定ASIC，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。在一个简单的实施例中，本领域的技术人员可以想到该通信装置90可以采用图2所示的形式。
比如，图2中的处理器201可以通过调用存储器203中存储的计算机执行指令，使得通信装置90执行上述方法实施例中的通信方法。
示例性的，图9中的接收单元901和处理单元902的功能/实现过程可以通过图2中的处理器201调用存储器203中存储的计算机执行指令来实现。或者，图9中的处理单元902的功能/实现过程可以通过图2中的处理器201调用存储器203中存储的计算机执行指令来实现，图9中的接收单元901的功能/实现过程可以通过图2中的通信接口204来实现。
由于本实施例提供的通信装置90可执行上述的通信方法，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
比如，以采用集成的方式划分各个功能模块的情况下，图10示出了一种通信装置100的结构示意图。该通信装置100可以为第一候选辅节点或者第一候选辅节点中的芯片或者片上系统，或其他可实现上述第一候选辅节点功能的组合器件、部件等，该通信装置100可以用于执行上述实施例中涉及的第一候选辅节点的功能。
作为一种可能的实现方式，图10所示的通信装置100包括：接收单元1001和处理单元1002。
接收单元1001，用于接收来自第一主节点的第一释放请求消息，该第一释放请求消息用于请求释放该通信装置为该第一主节点配置的PSCell，以及用于指示该通信装置保留与终端的上下文，该通信装置为既包括在第一PSCell列表中，又包括在第二PSCell列表中的第一候选PSCell所属的节点，该第一PSCell列表包括该第一主节点为该终端配置的一个或者多个候选PSCell，该第二PSCell列表包括第二主节点为该终端配置的一个或者多个候选PSCell，该第二主节点为该终端切换的目标主节点。
处理单元1002，用于根据该第一释放请求消息释放该通信装置为该第一主节点配置的PSCell并保留该通信装置与该终端的上下文。
可选的，该第一释放请求消息包括该通信装置的标识或者该通信装置的PSCell的标识。
其中，上述方法实施例涉及的各操作的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在本实施例中，该通信装置100以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定ASIC，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。在一个简单的实施例中，本领域的技术人员可以想到该通信装置100可以采用图2所示的形式。
比如，图2中的处理器201可以通过调用存储器203中存储的计算机执行指令，使得通信装置100执行上述方法实施例中的通信方法。
示例性的，图10中的接收单元1001和处理单元1002的功能/实现过程可以通过图2中的处理器201调用存储器203中存储的计算机执行指令来实现。或者，图10中的处理单元1002的功能/实现过程可以通过图2中的处理器201调用存储器203中存储的计算机执行指令来实现，图10中的接收单元1001的功能/实现过程可以通过图2中的通信接口204来实现。
由于本实施例提供的通信装置100可执行上述的通信方法，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
比如，以采用集成的方式划分各个功能模块的情况下，图11示出了一种通信装置110的结构示意图。该通信装置110可以为终端或者终端中的芯片或者片上系统，或其他可实现上述终端功能的组合器件、部件等，该通信装置110可以用于执行上述实施例中涉及的终端的功能。
作为一种可能的实现方式，图11所示的通信装置110包括：处理单元1101和接收单元1102。
处理单元1101，用于获取目标PSCell的第一配置信息，该第一配置信息包括主节点配置该目标PSCell为该终端的候选PSCell时，该目标PSCell的配置信息；接收单元1102，用于接收来自该主节点的第一消息，该第一消息包括该目标PSCell的标识或该目标PSCell所属的辅小区组的标识；处理单元1101，还用于根据该第一消息和该第一配置信息确定该目标PSCell的第二配置信息，该第二配置信息包括该主节点确定该目标PSCell为该终端的PSCell时，该目标PSCell的配置信息；处理单元1101，还用于根据该第二配置信息与该目标PSCell所属的辅节点建立连接。
可选的，若该第二配置信息与该第一配置信息不同，该第一消息还包括目标PSCell 的增量配置，该增量配置包括该第一配置信息中与该第二配置信息中不同的配置信息。
其中，上述方法实施例涉及的各操作的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在本实施例中，该通信装置110以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定ASIC，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。在一个简单的实施例中，本领域的技术人员可以想到该通信装置110可以采用图2所示的形式。
比如，图2中的处理器201可以通过调用存储器203中存储的计算机执行指令，使得通信装置110执行上述方法实施例中的通信方法。
示例性的，图11中的处理单元1101和接收单元1102的功能/实现过程可以通过图2中的处理器201调用存储器203中存储的计算机执行指令来实现。或者，图11中的处理单元1101的功能/实现过程可以通过图2中的处理器201调用存储器203中存储的计算机执行指令来实现，图11中的接收单元1102的功能/实现过程可以通过图2中的通信接口204来实现。
由于本实施例提供的通信装置110可执行上述的通信方法，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
比如，以采用集成的方式划分各个功能模块的情况下，图12示出了一种通信装置120的结构示意图。该通信装置120可以为主节点或者主节点中的芯片或者片上系统，或其他可实现上述主节点功能的组合器件、部件等，该通信装置120可以用于执行上述实施例中涉及的主节点的功能。
作为一种可能的实现方式，图12所示的通信装置120包括：发送单元1201。
发送单元1201，用于向终端发送目标PSCell的第一配置信息，该第一配置信息包括该主节点配置该目标PSCell为该终端的候选PSCell时，该目标PSCell的配置信息；发送单元1201，还用于向该终端发送第一消息，该第一消息包括目标PSCell的标识或该目标PSCell所属辅节点的标识，该第一消息用于和该第一配置信息确定该目标PSCell的第二配置信息，该第二配置信息包括该主节点确定该目标PSCell为该终端的PSCell时，该目标PSCell的配置信息。
可选的，若该第二配置信息与该第一配置信息不同，该第一消息还包括目标PSCell的增量配置，该增量配置包括该第一配置信息中与该第二配置信息中不同的配置信息。
其中，上述方法实施例涉及的各操作的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在本实施例中，该通信装置120以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定ASIC，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。在一个简单的实施例中，本领域的技术人员可以想到该通信装置120可以采用图2所示的形式。
比如，图2中的处理器201可以通过调用存储器203中存储的计算机执行指令，使得通信装置120执行上述方法实施例中的通信方法。
示例性的，图12中的发送单元1201的功能/实现过程可以通过图2中的处理器201调用存储器203中存储的计算机执行指令来实现。或者，图12中的发送单元1201 的功能/实现过程可以通过图2中的通信接口204来实现。
由于本实施例提供的通信装置120可执行上述的通信方法，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
图13示出了的一种通信系统的组成示意图，如图13所示，该通信系统130中可以包括：终端1301、主节点1302、主节点1303和候选辅节点1304。需要说明的是，图13仅为示例性附图，本申请实施例不限定图13所示通信系统130包括的网元以及网元的个数。
其中，终端1301具有上述图7所示通信装置70的功能，可以用于接收主节点1302的第一消息，根据第一消息和第一配置信息，添加目标PSCell或者从原始PSCell变更为该目标PSCell。
主节点1302具有上述图8所示通信装置80的功能，可以用于向主节点1303发送第二消息，接收来自主节点1303的第三消息并根据第三消息向终端1301发送第一消息。
主节点1303具有上述图9所示通信装置90的功能，可以用于接收来自主节1302的第二消息，根据第二消息确定主节点1302为终端1301配置了条件PSCell添加/变更功能，并向主节点1302发送第三消息。
候选辅节点1304具有上述图10所示通信装置100的功能，可以用于接收来自主节1302的第一释放请求消息，根据第一释放请求消息释放候选辅节点1304为主节点1302配置的PSCell并保留候选辅节点1304与终端1301的上下文。
需要说明的是，上述方法实施例涉及的各步骤的所有相关内容均可以援引到该通信系统130对应网元的功能描述，在此不再赘述。
图14示出了的一种通信系统的组成示意图，如图14所示，该通信系统140中可以包括：终端1401和主节点1402。需要说明的是，图14仅为示例性附图，本申请实施例不限定图14所示通信系统140包括的网元以及网元的个数。
其中，终端1401具有上述图11所示通信装置110的功能，可以用于获取目标PSCell的第一配置信息，接收来自主节点1402的第一消息，根据第一消息和第一配置信息确定目标PSCell的第二配置信息，并根据第二配置信息与目标PSCell所属的辅节点建立连接。
主节点1402具有上述图12所示通信装置120的功能，可以用于向终端1401发送目标PSCell的第一配置信息，并向终端1401发送第一消息。
可选的，通信系统140还可以包括目标PSCell所属的辅节点1403。目标PSCell所属的辅节点1403用于在主节点1402确定为终端1401添加目标PSCell时，与终端1401建立连接。
需要说明的是，上述方法实施例涉及的各步骤的所有相关内容均可以援引到该通信系统140对应网元的功能描述，在此不再赘述。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个装置，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是一个物理单元或多个物理单元，即可以位于一个地方，或者也可以分布到多个不同地方。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个可读取存储介质中。基于这样的理解，本申请实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该软件产品存储在一个存储介质中，包括若干指令用以使得一个设备(可以是单片机，芯片等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何在本申请揭露的技术范围内的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (50)

  1. 一种通信方法，其特征在于，所述方法包括：
    终端接收来自第一主节点的第一消息，所述第一消息包括第一候选主辅小区PSCell的标识，或者第一候选PSCell的配置信息的标识，所述第一候选PSCell包括在第一PSCell列表中，又包括在第二PSCell列表中；或者所述第一消息包括所述第二PSCell列表中候选PSCell的增量配置信息；其中，所述第一候选PSCell的配置信息包括所述第一候选PSCell的添加/变更条件和配置，所述第一PSCell列表包括所述第一主节点为所述终端配置的一个或者多个候选PSCell，所述第二PSCell列表包括第二主节点为所述终端配置的一个或者多个候选PSCell；
    所述终端根据所述第一消息和第一配置信息，添加目标PSCell或者从原始PSCell变更为所述目标PSCell，所述第一配置信息包括所述第一PSCell列表中候选PSCell的添加/变更条件和配置，所述目标PSCell为所述第二PSCell列表中的PSCell，所述原始PSCell为所述终端从所述第一主节点切换到所述第二主节点之前，所述终端连接的PSCell。
  2. 根据权利要求1所述的方法，其特征在于，
    所述增量配置信息包括所述第二主节点、所述第一主节点为所述终端配置的同一候选PSCell的配置信息中的不同的配置信息，和/或，所述第二PSCell列表中除所述第一候选PSCell之外的各个候选PSCell的配置信息，和/或，所述第二主节点确定释放的所述第一PSCell列表中的候选PSCell的配置信息的标识。
  3. 根据权利要求1或2所述的方法，其特征在于，所述终端根据所述第一消息和第一配置信息，添加目标PSCell或者从原始PSCell变更为所述目标PSCell，包括：
    所述终端根据所述第一消息和所述第一配置信息确定第二配置信息，所述第二配置信息包括所述第二PSCell列表中候选PSCell的添加/变更条件和配置；
    所述终端根据所述第二配置信息，将所述第二PSCell列表中满足候选PSCell的添加/变更条件的PSCell添加为所述目标PSCell，或者从所述原始PSCell变更为所述目标PSCell。
  4. 根据权利要求3所述的方法，其特征在于，所述第一消息包括所述第二PSCell列表中候选PSCell的增量配置信息，
    所述终端根据所述第一消息和所述第一配置信息确定第二配置信息，包括：
    所述终端根据所述增量配置信息和所述第一配置信息确定所述第二配置信息。
  5. 根据权利要求3所述的方法，其特征在于，所述第一消息包括所述第一候选PSCell的标识，或者所述第一候选PSCell的配置信息的标识，
    所述终端根据所述第一消息和所述第一配置信息确定第二配置信息，包括：
    所述终端将所述第一候选PSCell的标识，或者所述第一候选PSCell的配置信息的标识对应的第一配置信息，确定为所述第二配置信息。
  6. 根据权利要求1所述的方法，其特征在于，所述第一配置信息还包括所述原始PSCell的配置信息，所述增量配置信息包括所述第二PSCell列表中的任一候选PSCell与所述原始PSCell的配置信息中不同的配置信息。
  7. 一种通信方法，其特征在于，所述方法包括：
    第一主节点向第二主节点发送第一消息，所述第一消息用于指示第一主辅小区PSCell列表中候选PSCell的第一配置信息，所述第一配置信息包括所述第一PSCell列表中候选PSCell的添加/变更条件和配置，所述第一PSCell列表包括所述第一主节点为终端配置的一个或者多个候选PSCell，所述第二主节点为所述终端切换的目标主节点；
    所述第一主节点接收来自所述第二主节点的第二消息，所述第二消息是根据所述第一消息得到的，所述第二消息包括第一候选PSCell的标识，或者第一候选PSCell的配置信息的标识，所述第一候选PSCell包括在所述第一PSCell列表中，又包括在第二PSCell列表中；或者所述第二消息包括所述第二PSCell列表中候选PSCell的增量配置信息，所述第一候选PSCell的配置信息包括所述第一候选PSCell的添加/变更条件和配置，所述第二PSCell列表包括所述第二主节点为所述终端配置的一个或者多个候选PSCell；
    所述第一主节点根据所述第二消息向所述终端发送第三消息，所述第三消息包括所述第一候选PSCell的标识，或者所述第一候选PSCell的配置信息的标识，或者所述第二PSCell列表中候选PSCell的增量配置信息。
  8. 根据权利要求7所述的方法，其特征在于，
    所述增量配置信息包括所述第二主节点、所述第一主节点为所述终端配置的同一候选PSCell的配置信息中的不同的配置信息，和/或，所述第二PSCell列表中除所述第一候选PSCell之外的各个候选PSCell的配置信息，和/或，所述第二主节点确定释放的所述第一PSCell列表中的候选PSCell的配置信息的标识。
  9. 根据权利要求7或8所述的方法，其特征在于，所述方法还包括：
    所述第一主节点向所述第一PSCell列表中的各个候选PSCell所属的节点发送第一释放请求消息，所述第一释放请求消息用于请求释放所述第一PSCell列表中的每个候选PSCell。
  10. 根据权利要求9所述的方法，其特征在于，当所述第一PSCell列表中包含所述第一候选PSCell，所述第一释放请求消息还用于指示所述第一候选PSCell所属的节点保留与所述终端的上下文。
  11. 根据权利要求7-10中任一项所述的方法，其特征在于，
    所述第一消息包括所述第一PSCell列表中候选PSCell的配置信息；或者，
    所述第一消息包括所述第一PSCell列表中候选PSCell的标识；或者，
    所述第一消息包括所述第一PSCell列表中候选PSCell所属辅小区组的标识。
  12. 根据权利要求11所述的方法，其特征在于，所述第一消息还包括原始PSCell的标识，所述原始PSCell为所述终端从所述第一主节点切换到所述第二主节点之前，所述终端连接的PSCell。
  13. 根据权利要求12所述的方法，其特征在于，所述增量配置信息包括所述第二PSCell列表中的任一候选PSCell的与所述原始PSCell的配置信息中不同的配置信息。
  14. 一种通信方法，其特征在于，所述方法包括：
    第二主节点接收来自第一主节点的第一消息，所述第一消息用于指示第一主辅小区PSCell列表中候选PSCell的第一配置信息，所述第一配置信息包括所述第一PSCell 列表中候选PSCell的添加/变更条件和配置，所述第一PSCell列表包括所述第一主节点为终端配置的一个或者多个候选PSCell，所述第二主节点为所述终端切换的目标主节点；
    所述第二主节点根据所述第一消息确定所述第一主节点为所述终端配置了条件PSCell添加/变更功能，并向所述第一主节点发送第二消息，所述第二消息包括第一候选PSCell的标识，或者第一候选PSCell的配置信息的标识，所述第一候选PSCell包括在第一PSCell列表中，又包括在第二PSCell列表中；或者所述第二消息包括所述第二PSCell列表中候选PSCell的增量配置信息，所述第一候选PSCell的配置信息包括所述第一候选PSCell的添加/变更条件和配置，所述第二PSCell列表包括所述第二主节点为所述终端配置的一个或者多个候选PSCell。
  15. 根据权利要求14所述的方法，其特征在于，
    所述增量配置信息包括所述第二主节点、所述第一主节点为所述终端配置的同一候选PSCell的配置信息中的不同的配置信息，以及所述第二PSCell列表中除所述第一候选PSCell之外的各个候选PSCell的配置信息，和/或，所述第二主节点确定释放的所述第一PSCell列表中的候选PSCell的配置信息的标识。
  16. 根据权利要求14或15所述的方法，其特征在于，
    所述第一消息包括所述第一PSCell列表中候选PSCell的配置信息；或者，
    所述第一消息包括所述第一PSCell列表中候选PSCell的标识；或者，
    所述第一消息包括所述第一PSCell列表中候选PSCell所属辅小区组的标识。
  17. 根据权利要求16所述的方法，其特征在于，所述第一消息还包括原始PSCell的标识，所述原始PSCell为所述终端从所述第一主节点切换到所述第二主节点之前，所述终端连接的PSCell。
  18. 根据权利要求17所述的方法，其特征在于，所述增量配置信息包括所述第二PSCell列表中的任一候选PSCell与所述原始PSCell的配置信息中不同的配置信息。
  19. 一种通信方法，其特征在于，所述方法包括：
    第一候选辅节点接收来自第一主节点的第一释放请求消息，所述第一释放请求消息用于请求释放所述第一候选辅节点为所述第一主节点配置的主辅小区PSCell，以及用于指示所述第一候选辅节点保留与终端的上下文，所述第一候选辅节点为第一候选PSCell所属的节点，所述第一候选PSCell包括在第一PSCell列表中，又包括在第二PSCell列表中，所述第一PSCell列表包括所述第一主节点为所述终端配置的一个或者多个候选PSCell，所述第二PSCell列表包括第二主节点为所述终端配置的一个或者多个候选PSCell，所述第二主节点为所述终端切换的目标主节点；
    所述第一候选辅节点根据所述第一释放请求消息释放所述第一候选辅节点为所述第一主节点配置的PSCell并保留所述第一候选辅节点与所述终端的上下文。
  20. 根据权利要求19所述的方法，其特征在于，所述第一释放请求消息包括所述第一候选辅节点的标识或者所述第一候选辅节点的PSCell的标识。
  21. 一种通信方法，其特征在于，所述方法包括：
    终端获取目标主辅小区PSCell的第一配置信息，所述第一配置信息包括主节点配置所述目标PSCell为所述终端的候选PSCell时，所述目标PSCell的配置信息；
    所述终端接收来自所述主节点的第一消息，所述第一消息包括所述目标PSCell的标识或所述目标PSCell所属的辅小区组的标识；
    所述终端根据所述第一消息和所述第一配置信息确定所述目标PSCell的第二配置信息，所述第二配置信息包括所述主节点确定所述目标PSCell为所述终端的PSCell时，所述目标PSCell的配置信息；
    所述终端根据所述第二配置信息与所述目标PSCell所属的辅节点建立连接。
  22. 根据权利要求21所述的方法，其特征在于，若所述第二配置信息与所述第一配置信息不同，所述第一消息还包括目标PSCell的增量配置，所述增量配置包括所述第一配置信息中与所述第二配置信息中不同的配置信息。
  23. 一种通信方法，其特征在于，所述方法包括：
    主节点向终端发送目标主辅小区PSCell的第一配置信息，所述第一配置信息包括所述主节点配置所述目标PSCell为所述终端的候选PSCell时，所述目标PSCell的配置信息；
    所述主节点向所述终端发送第一消息，所述第一消息包括目标PSCell的标识或所述目标PSCell所属辅节点的标识，所述第一消息用于和所述第一配置信息确定所述目标PSCell的第二配置信息，所述第二配置信息包括所述主节点确定所述目标PSCell为所述终端的PSCell时，所述目标PSCell的配置信息。
  24. 根据权利要求23所述的方法，其特征在于，若第二配置信息与所述第一配置信息不同，所述第一消息还包括目标PSCell的增量配置，所述增量配置包括所述第一配置信息中与所述第二配置信息中不同的配置信息。
  25. 一种通信装置，其特征在于，所述通信装置包括：接收单元和处理单元；
    所述接收单元，用于接收来自第一主节点的第一消息，所述第一消息包括第一候选主辅小区PSCell的标识或者第一候选PSCell的配置信息的标识，所述第一候选PSCell包括在第一PSCell列表中，又包括在第二PSCell列表中；或者第一消息包括第二PSCell列表中候选PSCell的增量配置信息；其中，所述第一候选PSCell的配置信息包括所述第一候选PSCell的添加/变更条件和配置，所述第一PSCell列表包括所述第一主节点为所述通信装置配置的一个或者多个候选PSCell，所述第二PSCell列表包括第二主节点为所述通信装置配置的一个或者多个候选PSCell；
    所述处理单元，用于根据所述第一消息和第一配置信息，添加目标PSCell或者从原始PSCell变更为所述目标PSCell，所述第一配置信息包括所述第一PSCell列表中候选PSCell的添加/变更条件和配置，所述目标PSCell为所述第二PSCell列表中的PSCell，所述原始PSCell为所述通信装置从所述第一主节点切换到所述第二主节点之前，所述通信装置连接的PSCell。
  26. 根据权利要求25所述的通信装置，其特征在于，
    所述增量配置信息包括所述第二主节点、所述第一主节点为所述通信装置配置的同一候选PSCell的配置信息中的不同的配置信息，和/或，所述第二PSCell列表中除所述第一候选PSCell之外的各个候选PSCell的配置信息，和/或，所述第二主节点确定释放的所述第一PSCell列表中的候选PSCell的配置信息的标识。
  27. 根据权利要求25或26所述的通信装置，其特征在于，
    所述处理单元，具体用于根据所述第一消息和所述第一配置信息确定第二配置信息，所述第二配置信息包括所述第二PSCell列表中候选PSCell的添加/变更条件和配置；
    所述处理单元，还具体用于根据所述第二配置信息，将所述第二PSCell列表中满足候选PSCell的添加/变更条件的PSCell添加为所述目标PSCell或者从所述原始PSCell变更为所述目标PSCell。
  28. 根据权利要求27所述的通信装置，其特征在于，所述第一消息包括所述第二PSCell列表中候选PSCell的增量配置信息，
    所述处理单元，还具体用于根据所述增量配置信息和所述第一配置信息确定所述第二配置信息。
  29. 根据权利要求27所述的通信装置，其特征在于，所述第一消息包括所述第一候选PSCell的标识，或者所述第一候选PSCell的配置信息的标识，
    所述处理单元，还具体用于将所述第一候选PSCell的标识，或者所述第一候选PSCell的配置信息的标识对应的第一配置信息，确定为所述第二配置信息。
  30. 根据权利要求25所述的通信装置，其特征在于，所述第一配置信息还包括所述原始PSCell的配置信息，所述增量配置信息包括所述第二PSCell列表中的任一候选PSCell与所述原始PSCell的配置信息中不同的配置信息。
  31. 一种通信装置，其特征在于，所述通信装置包括：发送单元和接收单元；
    所述发送单元，用于向第二主节点发送第一消息，所述第一消息用于指示第一主辅小区PSCell列表中候选PSCell的第一配置信息，所述第一配置信息包括所述第一PSCell列表中候选PSCell的添加/变更条件和配置，所述第一PSCell列表包括所述通信装置为终端配置的一个或者多个候选PSCell，所述第二主节点为所述终端切换的目标主节点；
    所述接收单元，用于接收来自所述第二主节点的第二消息，所述第二消息是根据所述第一消息得到的，所述第二消息包括第一候选PSCell的标识，或者第一候选PSCell的配置信息的标识，所述第一候选PSCell包括在所述第一PSCell列表中，又包括在第二PSCell列表中；或者所述第二消息包括第二PSCell列表中候选PSCell的增量配置信息，所述第一候选PSCell的配置信息包括所述第一候选PSCell的添加/变更条件和配置，所述第二PSCell列表包括所述第二主节点为所述终端配置的一个或者多个候选PSCell；
    所述发送单元，还用于根据所述第二消息向所述终端发送第三消息，所述第三消息包括所述第一候选PSCell的标识，或者所述第一候选PSCell的配置信息的标识，或者所述第二PSCell列表中候选PSCell的增量配置信息。
  32. 根据权利要求31所述的通信装置，其特征在于，
    所述增量配置信息包括所述第二主节点、所述通信装置为所述终端配置的同一候选PSCell的配置信息中的不同的配置信息，和/或，所述第二PSCell列表中除所述第一候选PSCell之外的各个候选PSCell的配置信息，和/或，所述第二主节点确定释放的所述第一PSCell列表中的候选PSCell的配置信息的标识。
  33. 根据权利要求31或32所述的通信装置，其特征在于，
    所述发送单元，还用于向所述第一PSCell列表中的各个候选PSCell所属的节点发送第一释放请求消息，所述第一释放请求消息用于请求释放所述第一PSCell列表中的每个候选PSCell。
  34. 根据权利要求33所述的通信装置，其特征在于，当所述第一PSCell列表中包含所述第一候选PSCell，所述第一释放请求消息还用于指示所述第一候选PSCell所属的节点保留与所述终端的上下文。
  35. 根据权利要求31-34中任一项所述的通信装置，其特征在于，
    所述第一消息包括所述第一PSCell列表中候选PSCell的配置信息；或者，
    所述第一消息包括所述第一PSCell列表中候选PSCell的标识；或者，
    所述第一消息包括所述第一PSCell列表中候选PSCell所属辅小区组的标识。
  36. 根据权利要求35所述的通信装置，其特征在于，所述第一消息还包括原始PSCell的标识，所述原始PSCell为所述终端从所述通信装置切换到所述第二主节点之前，所述终端连接的PSCell。
  37. 根据权利要求36所述的通信装置，其特征在于，所述增量配置信息包括所述第二PSCell列表中的任一候选PSCell的与所述原始PSCell的配置信息中不同的配置信息。
  38. 一种通信装置，其特征在于，所述通信装置包括：接收单元和处理单元；
    所述接收单元，用于接收来自第一主节点的第一消息，所述第一消息用于指示第一主辅小区PSCell列表中候选PSCell的第一配置信息，所述第一配置信息包括所述第一PSCell列表中候选PSCell的添加/变更条件和配置，所述第一PSCell列表包括所述第一主节点为终端配置的一个或者多个候选PSCell，所述通信装置为所述终端切换的目标主节点；
    所述处理单元，用于根据所述第一消息确定所述第一主节点为所述终端配置了条件PSCell添加/变更功能，并向所述第一主节点发送第二消息，所述第二消息包括第一候选PSCell的标识，或者第一候选PSCell的配置信息的标识，所述第一候选PSCell包括在所述第一PSCell列表中，又包括在第二PSCell列表中；或者所述第二消息包括第二PSCell列表中候选PSCell的增量配置信息，所述第一候选PSCell的配置信息包括所述第一候选PSCell的添加/变更条件和配置，所述第二PSCell列表包括所述通信装置为所述终端配置的一个或者多个候选PSCell。
  39. 根据权利要求38所述的通信装置，其特征在于，
    所述增量配置信息包括所述通信装置、所述第一主节点为所述终端配置的同一候选PSCell的配置信息中的不同的配置信息，和/或，所述第二PSCell列表中除所述第一候选PSCell之外的各个候选PSCell的配置信息，和/或，所述通信装置确定释放的所述第一PSCell列表中的候选PSCell的配置信息的标识。
  40. 根据权利要求38或39所述的通信装置，其特征在于，
    所述第一消息包括所述第一PSCell列表中候选PSCell的配置信息；或者，
    所述第一消息包括所述第一PSCell列表中候选PSCell的标识；或者，
    所述第一消息包括所述第一PSCell列表中候选PSCell所属辅小区组的标识。
  41. 根据权利要求40所述的通信装置，其特征在于，所述第一消息还包括原始 PSCell的标识，所述原始PSCell为所述终端从所述第一主节点切换到所述通信装置之前，所述终端连接的PSCell。
  42. 根据权利要求41所述的通信装置，其特征在于，所述增量配置信息包括所述第二PSCell列表中的任一候选PSCell与所述原始PSCell的配置信息中不同的配置信息。
  43. 一种通信装置，其特征在于，所述通信装置包括：接收单元和处理单元；
    所述接收单元，用于接收来自第一主节点的第一释放请求消息，所述第一释放请求消息用于请求释放所述通信装置为所述第一主节点配置的PSCell，以及用于指示所述通信装置保留与终端的上下文，所述通信装置为第一候选PSCell所属的节点，所述第一候选PSCell包括在第一PSCell列表中，又包括在第二PSCell列表中，所述第一PSCell列表包括所述第一主节点为所述终端配置的一个或者多个候选PSCell，所述第二PSCell列表包括第二主节点为所述终端配置的一个或者多个候选PSCell，所述第二主节点为所述终端切换的目标主节点；
    所述处理单元，用于根据所述第一释放请求消息释放所述通信装置为所述第一主节点配置的PSCell并保留所述通信装置与所述终端的上下文。
  44. 根据权利要求43所述的通信装置，其特征在于，所述第一释放请求消息包括所述通信装置的标识或者所述通信装置的PSCell的标识。
  45. 一种通信装置，其特征在于，所述通信装置包括：处理单元和接收单元；
    所述处理单元，用于获取目标主辅小区PSCell的第一配置信息，所述第一配置信息包括主节点配置所述目标PSCell为所述通信装置的候选PSCell时，所述目标PSCell的配置信息；
    所述接收单元，用于接收来自所述主节点的第一消息，所述第一消息包括所述目标PSCell的标识或所述目标PSCell所属的辅小区组的标识；
    所述处理单元，还用于根据所述第一消息和所述第一配置信息确定所述目标PSCell的第二配置信息，所述第二配置信息包括所述主节点确定所述目标PSCell为所述通信装置的PSCell时，所述目标PSCell的配置信息；
    所述处理单元，还用于根据所述第二配置信息与所述目标PSCell所属的辅节点建立连接。
  46. 根据权利要求45所述的通信装置，其特征在于，若所述第二配置信息与所述第一配置信息不同，所述第一消息还包括目标PSCell的增量配置，所述增量配置包括所述第一配置信息中与所述第二配置信息中不同的配置信息。
  47. 一种通信装置，其特征在于，所述通信装置包括：发送单元；
    所述发送单元，用于向终端发送目标主辅小区PSCell的第一配置信息，所述第一配置信息包括所述通信装置配置所述目标PSCell为所述终端的候选PSCell时，所述目标PSCell的配置信息；
    所述发送单元，还用于向所述终端发送第一消息，所述第一消息包括目标PSCell的标识或所述目标PSCell所属辅节点的标识，所述第一消息用于和所述第一配置信息确定所述目标PSCell的第二配置信息，所述第二配置信息包括所述通信装置确定所述目标PSCell为所述终端的PSCell时，所述目标PSCell的配置信息。
  48. 根据权利要求47所述的通信装置，其特征在于，若第二配置信息与所述第一配置信息不同，所述第一消息还包括目标PSCell的增量配置，所述增量配置包括所述第一配置信息中与所述第二配置信息中不同的配置信息。
  49. 一种计算机可读介质，其上存储有计算机程序或指令，其特征在于，所述计算机程序或指令被执行时使得计算机执行如权利要求1至6中任一项所述的方法，或者执行如权利要求7至13中任一项所述的方法，或者执行如权利要求14至18中任一项所述的方法，或者执行如权利要求19-20中任一项所述的方法，或者执行如权利要求21至22中任一项所述的方法，或者执行如权利要求23至24中任一项所述的方法。
  50. 一种通信系统，包括：如权利要求1至6中任一项所述方法中所述的终端，和/或，如权利要求7至13中任一项所述方法中所述的第一主节点，和/或，如权利要求14至18中任一项所述方法中所述的第二主节点，和/或，如权利要求19至20中任一项所述方法中所述的第一候选辅节点；或者，
    包括：如权利要求21至22中任一项所述方法中所述的终端，和/或，如权利要求23至24中任一项所述方法中所述的主节点。
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US20230007552A1 (en) 2023-01-05
EP4099749A1 (en) 2022-12-07

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