WO2023066089A1 - 通信方法和通信装置 - Google Patents

通信方法和通信装置 Download PDF

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Publication number
WO2023066089A1
WO2023066089A1 PCT/CN2022/124689 CN2022124689W WO2023066089A1 WO 2023066089 A1 WO2023066089 A1 WO 2023066089A1 CN 2022124689 W CN2022124689 W CN 2022124689W WO 2023066089 A1 WO2023066089 A1 WO 2023066089A1
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Prior art keywords
access network
network device
candidate
primary
candidate primary
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PCT/CN2022/124689
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English (en)
French (fr)
Inventor
郑午阳
胡星星
耿婷婷
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华为技术有限公司
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Publication of WO2023066089A1 publication Critical patent/WO2023066089A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point

Definitions

  • the present application relates to the communication field, and in particular to a communication method and a communication device.
  • a user equipment may communicate with multiple base stations, that is, dual-connectivity (DC), also known as multi-radio dual connectivity (MR-DC) .
  • DC dual-connectivity
  • MR-DC multi-radio dual connectivity
  • the network side can use the resources of multiple base stations to provide communication services for the same UE, so as to provide high-speed transmission for the UE.
  • the base station that has control plane signaling interaction with the core network is called the master base station (master mode, MN), and other base stations are called secondary base stations (secondary node, SN).
  • master base station master mode, MN
  • secondary base stations secondary node, SN
  • the network side will trigger the change of the PSCell (that is, the network side instructs the UE to switch from one PSCell to another PSCell).
  • the UE may complete the change of the PSCell by executing a conditional primary-secondary cell change (conational PSCell change, CPC) procedure.
  • CPC conditional primary-secondary cell change
  • the embodiment of the present application discloses a communication method and a communication device, which can enable the normal execution of the CPC process.
  • an embodiment of the present application provides a communication method, the method includes: a first access network device receives first indication information from a second access network device; the first indication information indicates that the first The access network device sends a first reconfiguration message after or before sending the first candidate primary and secondary cell information to the second access network device; the first candidate primary and secondary cell information indicates that the second access network device Among the candidate primary-secondary cells added by the device requesting the third access network device, one or more first candidate primary-secondary cells accepted by the third access network device; the first access network device according to the first sending the first reconfiguration message to the terminal device; the first reconfiguration message includes configuration information corresponding to the one or more first candidate primary and secondary cells.
  • the first indication information instructs the first access network device to send the first reconfiguration message after or before sending the first candidate primary and secondary cell information to the second access network device.
  • the first access network device sends the first reconfiguration message to the terminal device according to the first indication information; solves the problem that the first access network device does not know to send the first reconfiguration message before sending the first candidate primary and secondary cell information, It is still a matter of sending the first reconfiguration message after sending the information of the first primary and secondary candidate candidate, so that the normal execution of the CPC process can be made.
  • the embodiment of the present application provides another communication method, which includes: the second access network device sends first indication information to the first access network device; the first indication information indicates that the first The access network device sends a first reconfiguration message after or before sending the first candidate primary and secondary cell information to the second access network device; the first candidate primary and secondary cell information indicates that the second access network device The device requests one or more first candidate primary-secondary cells accepted by the third access network device among the candidate primary-secondary cells added by the third access network device; the second access network device receives the Information about the first candidate primary and secondary cells of the first access network device.
  • the second access network device sends first indication information to the first access network device, and the first indication information indicates that the first access network device is sending the first candidate host to the second access network device.
  • Send the first reconfiguration message after or before the secondary cell information solve the problem that the first access network device does not know whether to send the first reconfiguration message before sending the first candidate primary and secondary cell information, or after sending the first candidate primary and secondary cell information
  • the problem of sending the first reconfiguration message after the cell information can enable the normal execution of the CPC process.
  • the first indication information includes an indication field
  • the indication field instructs the first access network device to send the first reconfiguration message after sending the first candidate primary-secondary cell information to the second access network device; and, the indication field further instructing the first access network device to send a second reconfiguration message after sending information about a second candidate primary and secondary cell to the second access network device;
  • the second candidate primary and secondary cell information indicates that the first Among the candidate primary-secondary cells that the second access network device requests the fourth access network device to add, one or more second candidate primary-secondary cells accepted by the fourth access network device;
  • the second reconfiguration message includes Configuration information corresponding to the one or more second candidate primary and secondary cells; or, the indication field indicates that the first access network device is sending the first candidate primary and secondary cells to the second access network device Sending the first reconfiguration message before the cell information; and, the indication field also instructs the first access network device to send the second candidate primary and secondary cell information to the second access network device
  • the second reconfiguration message the second candidate primary secondary cell information indicates that the second access network device requests the fourth access network device to add the
  • the indication field can not only indicate that the first access network device sends the first reconfiguration message after sending the first candidate primary and secondary cell information to the second access network device; The device sends the second reconfiguration message after sending the second candidate primary and secondary cell information to the second access network device.
  • the indication field can not only indicate that the first access network device sends the first reconfiguration message before sending the first candidate PSC cell information to the second access network device; The second access network device sends the second reconfiguration message before sending the second candidate primary and secondary cell information; signaling overhead is reduced.
  • the first indication information includes the identifier of the third access network device and/or the ID of the one or more first candidate primary and secondary cells. logo.
  • the first indication information includes the identifier of the third access network device and/or the identifiers of one or more first candidate primary and secondary cells, so as to instruct the first access network device to send the first reconfiguration message and The sequence of the first candidate primary and secondary cell information.
  • the first indication information includes the identifier of the third access network device and/or the ID of the one or more first candidate primary and secondary cells.
  • An identity and the first indication information includes the identity of the fourth access network device and/or the identity of the one or more second candidate primary and secondary cells.
  • the first indication information further includes an identifier of the fourth access network device and/or identifiers of one or more second candidate primary and secondary cells.
  • the first indication information can not only indicate the order in which the first access network device sends the first reconfiguration message and the first candidate PSC information, but also instruct the first access network device to send the second reconfiguration message and the second The sequence of the information of the candidate primary and secondary cells has less signaling overhead.
  • the first indication information includes a first field and a second field, and the first field corresponds to the identifier of the third access network device and /or the identifiers of the one or more first candidate primary-secondary cells, the second field corresponds to the identifier of the fourth access network device and/or the identifiers of one or more second candidate primary-secondary cells;
  • the The first field indicates that the first access network device sends the first reconfiguration message before or after sending the first candidate primary-secondary cell information to the second access network device; the second field instructing the first access network device to send the second reconfiguration message before or after sending the second candidate primary secondary cell information to the second access network device; wherein the second candidate primary secondary cell
  • the information indicates the one or more second candidate primary-secondary cells, and the one or more second candidate primary-secondary cells are candidate primary-secondary cells that the second access network device requests the fourth access network device to add Among the cells, one or more candidate primary and secondary cells accepted by the fourth access network device;
  • the first indication information independently indicates the order in which the first access network device sends the first reconfiguration message and the first candidate primary and secondary cell information, and the first access network device sends the second reconfiguration message
  • the sequence of the message and the information of the second candidate primary and secondary cells; the sequence in which the first access network device sends the first reconfiguration message and the information of the first candidate primary and secondary cells can be flexibly configured according to actual needs, and the first access network
  • the order in which the device sends the second reconfiguration message and the second candidate primary and secondary cell information has less signaling overhead.
  • the first indication information further includes an identifier of the third access network device and/or the one or more first candidate primary and secondary cells and the identity of the fourth access network device and/or the identity of the one or more second candidate primary and secondary cells.
  • the first indication information further includes the identifier of the third access network device and/or the identifiers of one or more first candidate primary and secondary cells, and the identifier of the fourth access network device and/or The identification of one or more second candidate primary and secondary cells; in order to accurately and quickly determine the identification of one or more first candidate primary secondary cells corresponding to the first field, and the identification of one or more second candidate primary and secondary cells corresponding to the second field The identifier of the primary and secondary cells.
  • the first indication information includes an identifier of the third access network device.
  • the first indication information includes the identifier of the third access network device, so as to instruct the first access network device to send the information of the first candidate primary and secondary cell corresponding to the third access network device and the first heavy Configure the sequence of messages.
  • the third access network device is a candidate secondary base station of the terminal device, and the first indication information does not include other candidates of the terminal device The identifier of the secondary base station.
  • the first instruction information only includes the identifier of a candidate secondary base station (that is, the third access network device) of a terminal device, so as to instruct the first access network device to send the
  • the sequence of the information of the first candidate primary and secondary cells and the first reconfiguration message occupies few bits.
  • the first indication information includes a third field, and the third field corresponds to the identifiers of the one or more first candidate primary and secondary cells, And, a fourth field, the fourth field corresponds to the identifiers of one or more third candidate primary and secondary cells, and the third field indicates that the first access network device is sending the second access network device After sending the first candidate primary and secondary cell information, sending the first reconfiguration message; the fourth field indicates that the first access network device sends the one or Sending a third reconfiguration message corresponding to the one or more third candidate primary-secondary cells before the third candidate primary-secondary cell information corresponding to the multiple third candidate primary-secondary cells; the one or more third candidate primary-secondary cells
  • the secondary cell belongs to one or more access network devices.
  • the one or more access network devices include the third access network device and/or other access network devices.
  • the first indication information further includes identities of the one or more first candidate primary and secondary cells, and identities of the one or more third candidate primary and secondary cells.
  • the third field indicates that the first access network device sends the first reconfiguration message after sending the first candidate primary and secondary cell information to the second access network device;
  • the fourth field indicates that the first access network device The network access device sends the third reconfiguration information corresponding to the one or more third candidate primary-secondary cells to the second access network device before sending the third candidate primary-secondary cell information corresponding to the one or more third candidate primary-secondary cells information.
  • the first indication information can independently indicate the order in which the first access network device sends the information of the PSC candidate and the reconfiguration message corresponding to any PSC candidate, and the signaling overhead is small.
  • the third field also corresponds to the identifiers of one or more fourth candidate primary and secondary cells, and the third field also indicates that the first access
  • the network access device sends the fourth candidate primary-secondary cell information corresponding to the one or more fourth candidate primary-secondary cells to the second access network device, sending the one or more fourth candidate primary-secondary cells
  • a corresponding fourth reconfiguration message the one or more fourth candidate primary and secondary cells belong to one or more access network devices.
  • the one or more fourth candidate primary-secondary cells belong to other access network devices than the third access network device.
  • the third field further instructs the first access network device to send one or more fourth candidate primary-secondary cell information corresponding to one or more fourth candidate primary-secondary cells to the second access network device Fourth reconfiguration messages corresponding to multiple fourth candidate primary and secondary cells.
  • the third field may indicate the order in which the first access network device sends the information of the candidate PSC and the reconfiguration message corresponding to the multiple candidate PSCs belonging to different access network devices.
  • the fourth field may indicate the order in which the first access network device sends the information of the candidate PSC and the reconfiguration message corresponding to the multiple candidate PSCs belonging to different access network devices. That is to say, both the third field and the fourth field in the first indication information can enable the first access network device to send the candidate primary secondary cell information and the reconfiguration message corresponding to multiple candidate primary secondary cells belonging to different access network devices sequence, occupying less bits.
  • the first indication information includes a third field, and the third field corresponds to the identifiers of the one or more first candidate primary and secondary cells, And, a fourth field, where the fourth field corresponds to the identifiers of one or more third candidate primary and secondary cells;
  • the third field indicates that the first access network device is sending the second access network device Before sending the information of the first candidate primary and secondary cells, send the first reconfiguration message;
  • the fourth field indicates that the first access network device sends the one or After the third candidate primary secondary cell information corresponding to the multiple third candidate primary secondary cells is sent, the third reconfiguration message corresponding to the one or multiple third candidate primary secondary cells is sent; the one or multiple third candidate primary secondary cells A secondary cell corresponds to one or more access network devices.
  • the first indication information further includes identities of the one or more first candidate primary and secondary cells, and identities of the one or more third candidate primary and secondary cells.
  • the third field indicates that the first access network device sends the first reconfiguration message before sending the first candidate PSC cell information to the second access network device;
  • the fourth field indicates that the first access network device After the network access device sends the third candidate primary secondary cell information corresponding to the one or more third candidate primary secondary cells to the second access network device, it sends the third reconfiguration information corresponding to the one or more third candidate primary secondary cells.
  • the first indication information can independently indicate the order in which the first access network device sends the information of the PSC candidate and the reconfiguration message corresponding to any PSC candidate, and the signaling overhead is small.
  • the third field also corresponds to the identifiers of one or more fourth candidate primary and secondary cells, and the third field also indicates that the first access
  • the network access device sends the one or more fourth candidate primary-secondary cells to the second access network device before sending the fourth candidate primary-secondary cell information corresponding to the one or more fourth candidate primary-secondary cells
  • a corresponding fourth reconfiguration message the one or more fourth candidate primary and secondary cells belong to one or more access network devices.
  • both the third field and the fourth field in the first indication information can be used by the first access network device to send the candidate PSC information and re-selection information corresponding to multiple candidate PSCs belonging to different access network devices
  • the sequence of configuration messages occupies few bits.
  • the first candidate primary secondary cell information indicates that the second access network device requests the third access network device to add the candidate primary secondary cell, One of the first candidate primary-secondary cells accepted by the third access network device;
  • the first reconfiguration message includes configuration information corresponding to the one first candidate primary-secondary cell;
  • the first indication information includes The fifth field, the identifier of the first candidate primary and secondary cell corresponding to the fifth field, the fifth field indicates that the first access network device sends the first access network device to the second access network device Sending the first reconfiguration message before or after the first candidate primary and secondary cell information.
  • the fifth field indicates that the first access network device sends the first reconfiguration message before or after sending the first candidate primary and secondary cell information to the second access network device, which has high flexibility.
  • the first indication information further includes a sixth field, and the sixth field corresponds to an identifier of a sixth candidate primary and secondary cell, and the sixth The field indicates that the first access network device sends a sixth reconfiguration message before or after sending the sixth candidate primary and secondary cell information to the second access network device, wherein the sixth candidate primary and secondary cell information Instructing the second access network device to request the sixth access network device to add a candidate primary and secondary cell accepted by the sixth access network device, the sixth reconfiguration message Contains configuration information of the sixth candidate primary and secondary cells.
  • the first indication information can independently instruct the first access network device to send the reconfiguration message corresponding to each candidate primary and secondary cell and the sequence of candidate primary and secondary cell information to the second access network device, which is flexible. High reliability and low signaling overhead.
  • the first indication information further includes the identifier of the third access network device, and the identifiers of the one or more first primary and secondary candidate cells Corresponding to the identifier of the third access network device.
  • the first indication information also includes the identifier of the third access network device, and the identifiers of one or more first candidate primary and secondary cells correspond to the identifier of the third access network device, so that the first access network
  • the network access device can determine one or more first candidate primary and secondary cells by combining the identifier of the third access network device and the identifiers of one or more first candidate primary and secondary cells, and the identifiers of one or more first candidate primary and secondary cells Can occupy fewer bits.
  • the first indication information is included in a SeNB handover request message.
  • the first indication information is included in the handover request message of the secondary base station, and there is no need to additionally carry the first indication information through other signaling, and the signaling overhead is small.
  • the method further includes: if the first access network device does not receive the second indication information from the second access network device, according to The received first indication information, sending a fifth reconfiguration message to the terminal device; the second indication information indicates that the first access network device is sending the fifth reconfiguration message to the second access network device Sending a fifth reconfiguration message after or before the candidate primary and secondary cell information; the fifth candidate primary and secondary cell information indicates that among the candidate primary and secondary cells that the second access network device requests the fifth access network device to add One or more fifth candidate primary-secondary cells accepted by the fifth access network device; the fifth reconfiguration message includes configuration information corresponding to the one or more fifth candidate primary-secondary cells.
  • the first access network device sends the fifth reconfiguration message to the terminal device according to the received first indication information without receiving the second indication information from the second access network device . That is to say, if the first access network device does not receive new indication information (second indication information), it can send a fifth reconfiguration message to the terminal device according to the received first indication information; The number of times the information is sent can also indicate the order in which to quickly determine the order in which to send the fifth reconfiguration information and the fifth candidate primary and secondary cell information.
  • the first access network device is a master base station of the terminal device; the second access network device is a source secondary base station of the terminal device , the third access network device is a candidate secondary base station for the terminal device.
  • the embodiment of the present application provides another communication method, which includes: a terminal device accessing the target primary cell of the first access network device; adding and changing the primary and secondary cells of the terminal device without triggering conditions (Conational PSCell Addition and Change, in the case of CPAC, sending first indication information to the first access network device, where the first indication information is used to determine the reason why the terminal device does not trigger CPAC.
  • a terminal device accessing the target primary cell of the first access network device
  • adding and changing the primary and secondary cells of the terminal device without triggering conditions Conational PSCell Addition and Change, in the case of CPAC, sending first indication information to the first access network device, where the first indication information is used to determine the reason why the terminal device does not trigger CPAC.
  • the terminal device sends the first indication information to the first access network device when CPAC is not triggered, so that the first access network device can determine the reason why the terminal device does not trigger CPAC.
  • the first indication information may enable the first access network device to learn more detailed information why CPAC is not triggered.
  • the method further includes: the terminal device sending a measurement report to the first access network device; the measurement report is used for the first access network device to update the CPAC configuration .
  • the terminal device sends a measurement report to the first access network device, so that the first access network device updates the configuration of the CPAC according to the measurement report.
  • the measurement report is related to each candidate primary and secondary cell corresponding to the target primary cell.
  • the measurement report is a measurement report related to each candidate primary and secondary cell corresponding to the target primary cell.
  • the measurement report is related to each candidate primary and secondary cell corresponding to the target primary cell, so that the first access network device learns the situation of each candidate primary secondary cell corresponding to the target primary cell according to the measurement report.
  • the measurement report includes target parameters of each candidate primary and secondary cell corresponding to the target primary cell; the target parameters include one or more of the following: reference signal received power (reference signal received power, RSRP), reference signal received quality (reference signal received quality, RSRQ), signal to interference plus noise ratio (signal to interference plus noise ratio, SINR).
  • reference signal received power reference signal received power
  • RSRQ reference signal received quality
  • SINR signal to interference plus noise ratio
  • the measurement report includes target parameters of each candidate primary and secondary cell corresponding to the target primary cell, so that the first access network device optimizes CPAC configuration according to the target parameters.
  • the target parameter is obtained by measurement when the terminal device judges whether a CPAC trigger condition is satisfied.
  • the target parameter is measured by the terminal device when judging whether the CPAC triggering condition is satisfied; so that the first access network device determines the reason for not triggering CPAC according to the target parameter.
  • the embodiment of the present application provides another communication method, the method includes: a first access network device receives first instruction information from a terminal device; the first access network device receives the first instruction information according to the first instruction information to determine the reason why the terminal device does not trigger CPAC.
  • the first access network device determines the reason why the terminal device does not trigger CPAC according to the first indication information, and then optimizes the configuration of CPAC.
  • the first indication information may enable the first access network device to learn more detailed information why CPAC is not triggered.
  • the method further includes: the first access network device receiving a measurement report from the terminal device; the measurement report is used for the first access network device to update the CPAC configuration.
  • the first access network device updates the configuration of the CPAC according to the measurement report.
  • the measurement report is related to each candidate primary and secondary cell corresponding to the target primary cell.
  • the measurement report is a measurement report related to each candidate primary and secondary cell corresponding to the target primary cell.
  • the measurement report is related to each candidate primary and secondary cell corresponding to the target primary cell, so that the first access network device learns the situation of each candidate primary secondary cell corresponding to the target primary cell according to the measurement report.
  • the measurement report includes target parameters of each candidate primary and secondary cell corresponding to the target primary cell: RSRP, RSRQ, and SINR.
  • the measurement report includes target parameters of each candidate primary and secondary cell corresponding to the target primary cell, so that the first access network device optimizes the configuration of the CPAC according to the target parameters.
  • the target parameter is obtained by measurement when the terminal device judges whether a CPAC trigger condition is satisfied.
  • the target parameter is measured by the terminal device when judging whether the CPAC triggering condition is satisfied; so that the first access network device determines the reason for not triggering CPAC according to the target parameter.
  • the first indication information indicates that the terminal device has measured all candidate primary and secondary cells corresponding to the target primary cell, and the target primary cell and the target primary cell None of the candidate primary and secondary cells corresponding to the cell meets the CPAC triggering condition.
  • the first indication information can make the first access network device know that the reason why the terminal device does not trigger CPAC is that the terminal device has measured all candidate primary and secondary cells corresponding to the target primary cell, but the None of the candidate primary and secondary cells corresponding to the primary cell meets the CPAC triggering condition.
  • the first indication information indicates that the terminal device has not measured a candidate PSC corresponding to the target Pcell.
  • the first indication information may enable the first access network device to know that the reason why the terminal device does not trigger CPAC is that the terminal device has not measured a candidate PSC corresponding to the target Pcell.
  • the first indication information indicates that the terminal device has measured some candidate primary and secondary cells corresponding to the target primary cell, and has been measured by the terminal device None of the candidate primary and secondary cells measured by the device meet the CPAC triggering condition.
  • the first indication information can make the first access network device know that the reason why the terminal device does not trigger CPAC is that the terminal device has measured some candidate PSCs corresponding to the target Pcell, but has been measured by the PSC None of the candidate primary and secondary cells measured by the terminal device meet the CPAC triggering condition.
  • the first indication information indicates the measurement situation of each candidate primary and secondary cell corresponding to the target primary cell and each candidate cell that has been measured by the terminal device.
  • the primary and secondary cells do not meet the CPAC triggering conditions.
  • the first indication information may enable the first access network device to know the measurement situation of each candidate primary and secondary cell corresponding to the target primary cell.
  • the first indication information indicates a candidate primary-secondary cell that has been measured by the terminal device among the candidate primary-secondary cells corresponding to the target primary cell, And none of the candidate primary and secondary cells that have been measured by the terminal device meets the CPAC triggering condition.
  • the first indication information may enable the first access network device to know that among the candidate primary-secondary cells corresponding to the target primary cell, the candidate primary-secondary cells that have been measured by the terminal device have been measured by the terminal device None of the candidate primary and secondary cells meets the CPAC triggering condition.
  • the embodiment of the present application provides another communication method, which includes: a terminal device accessing the target primary cell of the first access network device; adding and changing the primary and secondary cells of the terminal device without triggering conditions
  • a measurement report is sent to the first access network device; the measurement report is used for the first access network device to update the configuration of the CPAC.
  • the terminal device sends a measurement report to the first access network device without triggering the CPAC, so that the first access network device updates the configuration of the CPAC according to the measurement report.
  • the first indication information is sent by the terminal device to the first access network device when CPAC is not triggered.
  • the measurement report is related to each candidate primary and secondary cell corresponding to the target primary cell.
  • the measurement report includes target parameters of each candidate primary and secondary cell corresponding to the target primary cell; the target parameters include one or more of the following: RSRP, RSRQ, and SINR.
  • the target parameter is obtained by measurement when the terminal device judges whether a CPAC trigger condition is satisfied.
  • the embodiment of the present application provides another communication method, the method includes: the first access network device receives a measurement report from the terminal device; and updates the configuration of the CPAC according to the measurement report.
  • the first access network device updates the configuration of the CPAC according to the measurement report.
  • the configuration of the CPAC By updating the configuration of the CPAC, the primary and secondary cell switching of the terminal equipment can be better realized, and the communication quality of the terminal equipment can be improved.
  • the measurement report includes target parameters of each candidate primary and secondary cell corresponding to the target primary cell accessed by the terminal device; the target parameter includes one or more of the following: RSRP, RSRQ, SINR.
  • the target parameter is obtained by measurement when the terminal device judges whether a CPAC trigger condition is satisfied.
  • the updating the configuration of the CPAC according to the measurement report includes: updating each candidate primary and secondary cell corresponding to the target primary cell or a triggering threshold of the CPAC according to the measurement report.
  • the embodiments of the present application provide a communication device, where the communication device has a function of implementing the behaviors in the method embodiments of the first aspect above.
  • the functions described above may be implemented by hardware, or may be implemented by executing corresponding software on the hardware.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • the transceiver module includes a transceiver module and a processing module, wherein: the transceiver module is configured to receive first indication information from the second access network device; the first indication information indicates the first access The network device sends a first reconfiguration message after or before sending the first candidate primary and secondary cell information to the second access network device; the first candidate primary and secondary cell information indicates that the second access network device requests Among the candidate primary-secondary cells added by the third access network device, one or more first candidate primary-secondary cells accepted by the third access network device; the processing module is configured to, according to the first indication information and controlling the transceiver module to send the first reconfiguration message to the terminal device; the first reconfiguration message includes configuration information corresponding to the one or more first candidate primary and secondary cells.
  • the processing module is further configured to, if the second indication information from the second access network device is not received, according to the received first indication information, controlling the transceiver module to send a fifth reconfiguration message to the terminal device; the second indication information indicates that the first access network device is sending fifth candidate primary and secondary cell information to the second access network device After or before, sending a fifth reconfiguration message; the fifth candidate primary and secondary cell information indicates that among the candidate primary and secondary cells that the second access network device requests the fifth access network device to add, the fifth access network device One or more fifth candidate primary and secondary cells accepted by the network access device; the fifth reconfiguration message includes configuration information corresponding to the one or more fifth candidate primary and secondary cells.
  • the embodiments of the present application provide a communication device, where the communication device has a function of implementing the behaviors in the method embodiments of the second aspect above.
  • the functions described above may be implemented by hardware, or may be implemented by executing corresponding software on the hardware.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • a transceiver module is included, wherein: the transceiver module is configured to send first indication information to a first access network device; the first indication information indicates that the first access network device After or before sending the first candidate PSC cell information to the second access network device, send a first reconfiguration message; the first candidate PSC cell information indicates that the second access network device requests a third access Among the candidate primary and secondary cells added by the network device, one or more first candidate primary and secondary cells accepted by the third access network device; the transceiver module is also used to receive The first candidate primary and secondary cell information.
  • the embodiments of the present application provide a communication device, where the communication device has a function of implementing the behaviors in the method embodiments of the third aspect above.
  • the functions described above may be implemented by hardware, or may be implemented by executing corresponding software on the hardware.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • it includes a processing module and a transceiver module, wherein: the processing module is configured to control the terminal device to access the target primary cell of the first access network device; the transceiver module is also configured to If CPAC is not triggered, sending first indication information to the first access network device, where the first indication information is used to determine a reason why the terminal device does not trigger CPAC.
  • the transceiver module is further configured to send a measurement report to the first access network device; the measurement report is used for the first access network device to update the configuration of the CPAC.
  • the embodiment of the present application provides a communication device, the communication device has a function of implementing the behavior in the method embodiment of the fourth aspect above.
  • the functions described above may be implemented by hardware, or may be implemented by executing corresponding software on the hardware.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • it includes a transceiver module and a processing module, wherein: the transceiver module is configured to receive first indication information from a terminal device; the processing module is configured to, according to the first indication information, Determine the reason why the terminal device does not trigger CPAC.
  • the first indication information is sent by the terminal device to the first access network device when CPAC is not triggered.
  • the transceiving module is further configured to receive a measurement report from the terminal device; the measurement report is used for updating the configuration of the CPAC by the first access network device.
  • the embodiment of the present application provides a communication device, and the communication device has a function of implementing the behavior in the method embodiment of the fifth aspect above.
  • the functions described above may be implemented by hardware, or may be implemented by executing corresponding software on the hardware.
  • the hardware or software includes one or more modules or units corresponding to the above functions. In a possible implementation manner, it includes a processing module and a transceiver module, wherein: the processing module is configured to control the terminal device to access the target primary cell of the first access network device; When the terminal device does not trigger CPAC, send a measurement report to the first access network device; the measurement report is used for the first access network device to update the configuration of CPAC.
  • the first indication information is sent by the terminal device to the first access network device when CPAC is not triggered.
  • the embodiment of the present application provides a communication device, and the communication device has a function of implementing the behavior in the method embodiment of the sixth aspect above.
  • the functions described above may be implemented by hardware, or may be implemented by executing corresponding software on the hardware.
  • the hardware or software includes one or more modules or units corresponding to the above functions. In a possible implementation manner, it includes a transceiver module and a processing module, wherein: the transceiver module is configured to receive a measurement report from the terminal device; the processing module is configured to update the configuration of the CPAC according to the measurement report .
  • the processing module is specifically configured to, according to the measurement report, update the triggering threshold of each candidate primary and secondary cell or CPAC corresponding to the target primary cell.
  • the present application provides a communication device, the communication device includes a processor, and the processor can be used to execute the computer-executed instructions stored in the memory, so that any possible implementation of the above-mentioned first aspect or the first aspect
  • the method shown in the manner is executed, or the method shown in the second aspect or any possible implementation of the second aspect is executed, or the third aspect or any possible implementation of the third aspect is executed.
  • the method shown in the above-mentioned fourth aspect or any possible implementation of the fourth aspect is executed, or the method shown in the above-mentioned fifth aspect or any possible implementation of the fifth aspect is executed.
  • the method is executed, or the method shown in the sixth aspect or any possible implementation manner of the sixth aspect is executed.
  • the process of sending information in the above method can be understood as the process of outputting information based on the instructions of the processor.
  • the processor In outputting information, the processor outputs the information to the transceiver for transmission by the transceiver. After the information is output by the processor, it may also need to undergo other processing before reaching the transceiver.
  • the processor receives incoming information
  • the transceiver receives that information and inputs it to the processor. Furthermore, after the transceiver receives the information, the information may require other processing before being input to the processor.
  • the above-mentioned processor may be a processor dedicated to performing these methods, or may be a processor that executes computer instructions in a memory to perform these methods, such as a general-purpose processor.
  • the processor may also be used to execute a program stored in the memory, and when the program is executed, the communication device executes the method as shown in the first aspect or any possible implementation manner of the first aspect.
  • the memory is located outside the communication device. In a possible implementation manner, the memory is located in the above communication device.
  • the processor and the memory may also be integrated into one device, that is, the processor and the memory may also be integrated together.
  • the communication device further includes a transceiver, where the transceiver is configured to receive a message or send a message, and the like.
  • the present application provides a data processing device, the data processing device includes a processing circuit and an interface circuit, and the interface circuit is used to obtain data or output data; the processing circuit is used to perform the above-mentioned first aspect or the first aspect
  • the corresponding method shown in any possible implementation manner of the second aspect, or the processing circuit is used to execute the corresponding method shown in the second aspect or any possible implementation manner of the second aspect, or the processing circuit is used to execute the corresponding method shown in the first aspect above
  • the corresponding method shown in the third aspect or any possible implementation of the third aspect, or the processing circuit is used to execute the corresponding method shown in the fourth aspect or any possible implementation of the fourth aspect, or the processing circuit
  • the processing circuit is used for performing the corresponding method as shown in the above fifth aspect or any possible implementation of the fifth aspect, or the processing circuit is used for performing the corresponding method as shown in the above sixth aspect or any possible implementation of the sixth aspect Methods.
  • the present application provides a computer-readable storage medium, which is used to store a computer program, and when it is run on a computer, the above-mentioned first aspect or any possible implementation of the first aspect can be realized
  • the method shown in the manner is executed, or the method shown in the second aspect or any possible implementation of the second aspect is executed, or the method shown in the third aspect or any possible implementation of the third aspect is executed.
  • the method is executed, or the method shown in the fourth aspect or any possible implementation manner of the fourth aspect is executed, or the method shown in the fifth aspect or any possible implementation manner of the fifth aspect is executed, Or the method shown in the sixth aspect or any possible implementation manner of the sixth aspect is executed.
  • the present application provides a computer program product, the computer program product includes a computer program or computer code, and when it is run on a computer, the above-mentioned first aspect or any possible implementation of the first aspect shows The method is executed, or the method shown in the second aspect or any possible implementation of the second aspect is executed, or the method shown in the third aspect or any possible implementation of the third aspect is executed , or make the above fourth aspect or the method shown in any possible implementation of the fourth aspect be executed, or cause the above fifth aspect or the method shown in any possible implementation of the fifth aspect to be executed, or make the above The method shown in the sixth aspect or any possible implementation manner of the sixth aspect is executed.
  • the present application provides a communication system, including the first access network device in the seventh aspect or any possible implementation of the seventh aspect and the eighth aspect or any possible implementation of the eighth aspect
  • the method is the second access network device.
  • FIG. 1 is a schematic diagram of the architecture of an MR-DC scenario provided by the present application
  • FIG. 2 is an example of a base station side protocol stack and network element modules provided in an embodiment of the present application
  • FIG. 3 is a conceptual schematic diagram of various cells under dual connectivity provided by an embodiment of the present application.
  • FIG. 4 is a flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 5 is an example of a first indication information provided by an embodiment of the present application.
  • FIG. 6A is an example of another first indication information provided by the embodiment of the present application.
  • FIG. 6B is an example of another first indication information provided by the embodiment of the present application.
  • FIG. 7 is a flowchart of another communication method provided by the embodiment of the present application.
  • FIG. 8 is a flow chart of another communication method provided by the embodiment of the present application.
  • FIG. 9 is a flowchart of another communication method provided by the embodiment of the present application.
  • FIG. 10 is a flowchart of another communication method provided by the embodiment of the present application.
  • FIG. 11 is a flowchart of another communication method provided by the embodiment of the present application.
  • FIG. 12 is a flow chart of another communication method provided by the embodiment of the present application.
  • FIG. 13 is a flow chart of another communication method provided by the embodiment of the present application.
  • FIG. 14 is a flowchart of another communication method provided by the embodiment of the present application.
  • FIG. 15 is a flowchart of another communication method provided by the embodiment of the present application.
  • FIG. 16 is a flow chart of another communication method provided by the embodiment of the present application.
  • FIG. 17 is a flow chart of another communication method provided by the embodiment of the present application.
  • FIG. 18 shows a schematic structural diagram of a communication device 1800
  • FIG. 19 is a schematic structural diagram of another communication device 190 provided in an embodiment of the present application.
  • FIG. 20 is a schematic structural diagram of another communication device 200 provided in an embodiment of the present application.
  • an embodiment means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application.
  • the occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It will be understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.
  • the technical solution provided by this application can be applied to various communication systems, such as: long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, fourth generation (4th generation, 4G) communication system, non-terrestrial communication network ( Non-terrestrial network (NTN) system, fifth generation (5th generation, 5G) communication system or new radio (new radio, NR) and other future communication systems, such as 6G, etc.
  • LTE long term evolution
  • LTE frequency division duplex frequency division duplex
  • TDD time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • fourth generation (4th generation, 4G) communication system non-terrestrial communication network
  • NTN non-terrestrial network
  • 5G fifth generation
  • new radio new radio
  • FIG. 1 is a schematic diagram of an architecture of an MR-DC scenario provided by the present application.
  • the communication system includes: one or more user equipments, and only one user equipment is taken as an example in FIG. 1, and one or more access network devices ( For example, a base station), FIG. 1 only takes an access network device 1 (a primary base station of a terminal device) and an access network device 2 (a secondary base station of a terminal device) as an example.
  • a user equipment (user equipment, UE) is a device with a wireless transceiver function.
  • the user equipment can communicate with one or more core network (core network, CN) equipment (or called core equipment) via an access network device (or called an access device) in a radio access network (radioaccess network, RAN). communication.
  • Core network CN
  • RAN radio access network
  • User equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as on aircraft, balloons, and satellites, etc.).
  • the UE can also be called a terminal device, which can be a mobile phone, a tablet computer (pad), a computer with a wireless transceiver function, a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, smart grid Wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, wireless terminal equipment in smart home, etc.
  • the user equipment may be a handheld device with a wireless communication function, a vehicle-mounted device, a wearable device, or a terminal in the Internet of Things, the Internet of Vehicles, a 5G network, or any form of terminal in the future network. Not limited.
  • the access network device may be any device that has a wireless transceiver function and can communicate with the user equipment, for example, a radio access network (radio access network, RAN) node that connects the user equipment to a wireless network.
  • RAN nodes include: gNB, transmission reception point (TRP), evolved Node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), Node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), base band unit (base band unit , BBU), wireless fidelity (Wifi) access point (access point, AP), integrated access and backhaul (IAB), etc.
  • a base station is used as an example of an access network device for description.
  • Fig. 2 is an example of a base station side protocol stack and network element modules provided in the embodiment of the present application.
  • the base station may include a CU and a DU, and one CU may be connected to one DU, or multiple DUs may share one CU.
  • the segmentation of CU and DU can be divided according to the protocol stack.
  • Radio resource control radio resource control
  • service data adaptation protocol service data adaptation protocol
  • SDAP packet data convergence protocol
  • the packet data convergence protocol (PDCP) layer is deployed in the CU, and the rest of the radio link control (radio link control, RLC) layer, media access control (media access control, MAC) layer and physical layer (physical layer, PHY) are deployed in the du.
  • RLC radio link control
  • MAC media access control
  • PHY physical layer
  • the CU-CP is responsible for the control plane (control plane) functions, mainly including radio resource control (radio resource control, RRC) and packet data convergence protocol (packet data convergence protocol, PDCP)-C.
  • PDCP-C is mainly responsible for encryption and decryption of control plane data, integrity protection, data transmission, etc.
  • CU-UP is responsible for user plane (user plane) functions, mainly including service data adaptation protocol (service data adaptation protocol, SDAP) and PDCP-U.
  • SDAP service data adaptation protocol
  • PDCP-U is mainly responsible for processing the data of the core network and mapping the flow to the bearer.
  • PDCP-U is mainly responsible for encryption and decryption of the data plane, integrity protection, header compression, serial number maintenance, data transmission, etc.
  • CU-CP and CU-UP are connected through E1 interface.
  • the CU-CP represents the connection between the CU and the core network through the Ng interface.
  • CU-CP is connected with DU through F1-C (control plane).
  • CU-UP is connected to DU through F1-U (user plane).
  • F1-C control plane
  • F1-U user plane
  • PDCP-C is also in CU-UP.
  • MR-DC includes various forms, such as E-UTRA NR dual connectivity (EN-DC), next-generation radio access technology and E-UTRA Dual connectivity (next generation-RAN E-UTRA dual connectivity, NGEN-DC), new air interface and evolved universal land radio access dual connectivity (NR E-UTRA dual connectivity, NE-DC), new air interface dual connectivity (NR dual connectivity, NR-DC), etc.
  • EN-DC the primary base station is a long term evolution (LTE) base station connected to the fourth generation mobile communication technology (the 4th generation, 4G) packet core network (evolved packet core, EPC), and the secondary base station is NR base station.
  • LTE long term evolution
  • 4G fourth generation mobile communication technology
  • EPC evolved packet core
  • the primary base station is an LTE base station ng-eNB connected to the fifth generation core network (5generation core, 5GC) of the fifth generation mobile communication technology (the 5th generation, 5G), and the secondary base station is an NR base station.
  • 5GC fifth generation core network
  • the primary base station is an NR base station connected to 5GC
  • the secondary base station is an LTE base station.
  • the primary base station is an NR base station connected to 5GC
  • the secondary base station is an NR base station.
  • the SN may have a user plane connection with the core network connected to the MN, that is, in the downlink direction, the core network connected to the MN can directly send data to the UE through the secondary base station; in the uplink direction, the UE Data can be directly sent to the core network connected to the MN through the SN.
  • the core network connected to the MN can directly send data to the UE through the secondary base station; in the uplink direction, the UE Data can be directly sent to the core network connected to the MN through the SN.
  • there may also be a user plane connection between the MN and the core network.
  • the serving cell group provided by the MN for the UE can also be called a master cell group (MCG for short), and a similar SN is a serving cell group provided by the UE. It is called secondary cell group (secondary cell group), referred to as SCG.
  • the MCG and the SCG respectively include at least one cell. When there is only one cell in the MCG, the cell is the PCell of the UE. When there is only one cell in the SCG, the cell is the PSCell of the UE.
  • the primary cell refers to the cell that is deployed at the main frequency point and where the UE initiates the initial connection establishment process or the connection reestablishment process, or is indicated as the primary cell during the handover process.
  • the primary-secondary cell refers to the cell where the UE initiates the random access process in the secondary base station or the cell where the UE initiates data transmission when the UE skips the random access process during the secondary base station change process, or initiates random access during the synchronization reconfiguration process
  • the cell of the secondary base station In order to normalize various nouns in NR, PCell and PSCell are collectively referred to as special cells, namely SpCell. When there are multiple cells in the MCG or SCG, the cells other than the SpCell are called secondary cells (SCell).
  • SCell secondary cells
  • FIG. 3 is a conceptual schematic diagram of various cells under dual connectivity provided by an embodiment of the present application. As shown in Figure 3, the SCell and the SpCell perform carrier aggregation.
  • Conditional handover (conditional handover, CHO):
  • the source base station sends CHO configuration information to the UE when the quality of the source link is good.
  • the source base station may send the CHO configuration information through radio resource control (radio resource control, RRC) reconfiguration signaling.
  • the CHO configuration information may include CHO triggering conditions, information of one or more candidate cells (for example, the global cell identifier (cell global identifier, CGI) of the candidate cell, or the physical cell identifier (physical cell identifier, PCI) of the candidate cell ) and the frequency information corresponding to the candidate cell).
  • the UE After receiving the CHO configuration information of the conditional handover, the UE measures whether the cell quality of the candidate cell meets the handover trigger condition according to the CHO configuration information, and takes a candidate cell that meets the handover trigger condition as the target cell; then, the UE and the determined The target cell performs a random access procedure. When the random access is successfully completed, the UE sends an RRC reconfiguration complete message to the base station to which the target cell belongs (ie, the target base station) to notify the target base station that the conditional handover is completed.
  • the base station to which the target cell belongs ie, the target base station
  • the UE in order to improve the UE’s communication performance while moving, the UE can complete the PSCell change in a manner similar to CHO, or use CHO in the PSCell change process.
  • the PSCell change method is called CPC.
  • Either MN or SN can trigger CPC.
  • the MN or SN currently connected to the UE provides the UE with a candidate PSCell.
  • the UE accesses the target SN (target SN, T-SN) to which the candidate PSCell belongs, and communicates with the target SN through the candidate PSCell to complete the change of the PSCell.
  • An implementation manner of the SN-triggered CPC includes: before the MN sends the information of the candidate primary-secondary cell to the S-SN, the MN sends a reconfiguration message including the candidate primary-secondary cell to the UE.
  • Another implementation manner of the SN-triggered CPC includes: after the MN sends the candidate PSC information to the S-SN, then sends a reconfiguration message to the UE.
  • FIG. 4 is a flowchart of a communication method provided by an embodiment of the present application. As shown in Figure 4, the method flow includes:
  • the first access network device receives first indication information from the second access network device.
  • the first indication information instructs the first access network device (hereinafter referred to as access network device 1) to send the first re- Configure messages.
  • the first candidate primary-secondary cell information indicates one or more first candidate primary-secondary cells accepted by the third access network device among the candidate primary-secondary cells requested by the second access network device to be added by the third access network device.
  • the multiple first candidate primary-secondary cells refer to candidate primary-secondary cells accepted by the third access network device.
  • the access network device 1 may be the MN of the UE, the second access network device may be the S-SN of the UE, and the third access network device may be a candidate T-SN of the UE.
  • the first access network device determines the first reconfiguration message for the terminal to perform CPC.
  • the first reconfiguration message may be an RRC reconfiguration (RRCReconfiguration) message.
  • the first reconfiguration message may include the source SeNB RRC reconfiguration (S-SN-RRCReconfiguration) sent to the MN by the second access network device, where the S-SN-RRCReconfiguration may include a measurement ID.
  • the first reconfiguration message may also include conditional PSCell information (conditional PSCell information).
  • the conditional primary and secondary cell information may include one or more PSCell IDs (that is, the IDs of one or more first candidate primary and secondary cells), the execution condition ID corresponding to the one or more PSCell IDs, and the execution condition ID corresponding to the one or more PSCell IDs.
  • the MN-RRCReconfiguration message is new configuration information corresponding to the MN when the UE accesses a new PSCell. There is a one-to-one correspondence between the execution condition ID and the measurement ID.
  • the measurement ID corresponds to some measurement configurations, which may include information such as CPAC trigger events and measurement gaps.
  • the measurement configuration corresponding to each measurement ID is different.
  • the first indication information is included in a secondary base station handover request (SN Change Required) message.
  • the first access network device sends a first reconfiguration message to the UE according to the first indication information.
  • the first reconfiguration message includes configuration information corresponding to one or more first candidate primary and secondary cells.
  • the first reconfiguration message includes configuration information corresponding to one or more first candidate primary and secondary cells.
  • the method further includes step S403: the access network device 1 sends information of the first candidate primary and secondary cells to the second access network device. It can be understood that step S403 may be performed before step S402 or after step S403, and the access network device 1 determines the execution order of step S402 and step S403 according to the first indication information.
  • the first indication information instructs the access network device 1 to send the first reconfiguration message after or before sending the first candidate primary and secondary cell information to the second access network device.
  • the first access network device sends the first reconfiguration message to the UE according to the first indication information; so that the first access network device can explicitly send the first reconfiguration information to the UE and send the first candidate to the second access network device
  • the sequence of the primary and secondary cell information, so that the subsequent CPC process is normally executed.
  • the granularity of the first indication information may be configured according to actual requirements. It should be understood that when the granularity of the first indication information is different, the information included in the first indication information is different, and the functions of the first indication information are also different. Some possible implementation manners and possible granularities of the first indication information are introduced below.
  • the first indication information includes an indication field, and the indication field indicates that the access network device 1 sends the first candidate primary-secondary cell to the second access network device After sending the first reconfiguration message; and, the indication field also instructs the access network device 1 to send the second candidate primary and secondary cell information to the second access network device after A reconfiguration message: the second candidate primary secondary cell information indicates that the second access network device requests the fourth access network device to add the candidate primary secondary cell, one or the other that is accepted by the fourth access network device a plurality of second candidate primary and secondary cells; the second reconfiguration message includes configuration information corresponding to the one or more second candidate primary and secondary cells; or, the indication field indicates that the access network device 1 is sending The second access network device sends the first reconfiguration message before sending the first candidate primary and secondary cell information; and, the indication field also indicates that the access network device 1 is sending the information to the second The access network device sends a second reconfiguration message before sending the second candidate primary and secondary cell information; the second candidate primary and secondary cell information indicates that the second access network
  • the indication field contained in the first indication information occupies 1 bit. If the indication field is "1", it indicates that the access network device 1 sends the first The reconfiguration message also instructs the access network device 1 to send the second reconfiguration message after sending the second candidate primary and secondary cell information to the second access network device; if the indication field is "0", it indicates that the access network device Device 1 sends the first reconfiguration message before sending the first candidate primary and secondary cell information to the second access network device, and also instructs access network device 1 to send the second candidate primary and secondary cell information to the second access network device Before, a second reconfiguration message is sent.
  • the fourth access network device is a candidate T-SN, which may be the third access network device or other access network devices. It should be understood that if the fourth access network device is the third access network device, the first reconfiguration message and the first candidate primary and secondary cell information are sent by the MN in a CPC process triggered by the SN, and the second reconfiguration message and The second candidate primary and secondary cell information is sent by the MN in another CPC procedure triggered by the SN.
  • the first candidate primary and secondary cell information and the second candidate primary and secondary cell information can be regarded as two types of candidate primary and secondary cell information corresponding to the second access network device (ie, the S-SN of the UE), and each type of candidate primary and secondary cell information
  • the first reconfiguration message and the second reconfiguration message may be regarded as two reconfiguration messages corresponding to the second access network device (for example, RRCReconfiguration message) corresponding to one or more candidate primary and secondary cells of different candidate T-SNs respectively.
  • the granularity of the first indication information may be the information of each pair of candidate primary and secondary cells and the reconfiguration message corresponding to the second access network device.
  • both the first candidate primary secondary cell information and the first reconfiguration message correspond to the first candidate primary secondary cell, or the second candidate primary secondary cell information and the second reconfiguration message both correspond to the second candidate primary secondary cell.
  • the granularity of the first indication information may be for each source secondary base station, that is, per S-SN. That is to say, for each pair of candidate primary and secondary cell information and reconfiguration messages corresponding to different candidate T-SNs determined by the second access network device, the first indication information indicates that the access network device 1 is sending information to the second access network device After (or before) the device sends the candidate primary and secondary cell information, it sends a reconfiguration message.
  • the first indication information includes an indication field, and the indication field indicates that each pair of candidate primary and secondary cell information and reconfiguration messages corresponding to all candidate target secondary base stations determined by the second access network device are accessed by the first access network device.
  • the order in which network devices are sent For example, the indication field contained in the first indication information is 1, and the indication information instructs the access network device 1 to send the secondary cell information corresponding to any candidate primary and secondary cell information after sending the information of any candidate primary and secondary cell to the second access network device.
  • Configure messages For another example, the indication field contained in the first indication information is 0, and the indication information indicates that the access network device 1 sends the information corresponding to any candidate primary and secondary cell before sending the information of any candidate primary and secondary cell to the second access network device.
  • Reconfiguration message For example, the indication field contained in the first indication information is 1, and the indication information indicates that the access network device 1 sends the information corresponding to any candidate primary and secondary cell before sending the information of any candidate primary and secondary cell to the second access network device.
  • the first indication information may include the identity of the second access network device, so that for any pair of candidate primary and secondary cell information and reconfiguration messages corresponding to the second access network device, the first indication information indicates The access network device 1 sends a reconfiguration message to the UE after (or before) sending the candidate primary and secondary cell information to the second access network device.
  • the granularity of the first indication information is each source secondary base station, so that the second access network device can instruct the access network device 1 to send any pair of The sequence of candidate primary and secondary cell information and reconfiguration messages reduces signaling overhead and enables the normal execution of the CPC process.
  • the third access network device and the fourth access network device as the T-SN above are only illustrative, and the second access network device as the S-SN can determine N (N ⁇ 1) candidate T-SNs
  • the indication field in the first indication information may be used to indicate the order in which the candidate primary and secondary cell information corresponding to the N candidate T-SNs and the reconfiguration message are sent, that is, the N candidate T-SNs correspond to Candidate primary and secondary cell information and reconfiguration messages are sent in the same order.
  • the first indication information instructs the access network device 1 to send the first reconfiguration message to the UE after (or before) sending the first candidate primary-secondary cell information to the second access network device.
  • the first indication information also instructs the access network device 1 to send the second reconfiguration message to the UE before (or after) sending the second candidate primary-secondary cell information to the second access network device.
  • the second candidate primary-secondary cell information indicates one or more second candidate primary-secondary cells accepted by the fourth access network device among the candidate primary-secondary cells requested by the second access network device to be added by the fourth access network device.
  • the second reconfiguration message includes configuration information corresponding to one or more second candidate primary and secondary cells.
  • the first indication information can independently indicate the order in which the access network device 1 sends the first reconfiguration message and the first candidate primary and secondary cell information, and the access network device 1 sends the second reconfiguration message and the second candidate cell information.
  • the first candidate primary secondary cell information and the first reconfiguration message can be regarded as a pair of candidate primary secondary cell information and reconfiguration message corresponding to the third access network device (a T-SN of the UE); the second candidate primary secondary cell
  • the information and the second reconfiguration message may be regarded as a pair of candidate primary and secondary cell information and a reconfiguration message corresponding to the fourth access network device (another T-SN of the UE).
  • the first indication information may independently instruct the access network device 1 to send each pair of candidate primary and secondary cell information and reconfiguration messages corresponding to the third access network device (for example, the first candidate primary secondary cell information and the first reconfiguration message message) and the order in which the access network device 1 sends each pair of candidate primary and secondary cell information and reconfiguration messages corresponding to the fourth access network device (for example, the second candidate primary and secondary cell information and the second reconfiguration message) order.
  • the granularity of the first indication information may be each pair of candidate primary and secondary cell information and reconfiguration messages corresponding to each T-SN (for example, the third access network device and the fourth access network device).
  • the granularity of the first indication information may be each target secondary base station (a certain T-SN), that is, per candidate-SN.
  • the first indication information includes a first field and a second field, the first field corresponds to the identifier of the third access network device and/or the one or more first candidate primary and secondary The identity of the cell, the second field corresponds to the identity of the fourth access network device and/or the identity of one or more second candidate primary and secondary cells; the first field indicates that the first access network device is in Sending the first reconfiguration message before or after sending the first candidate primary and secondary cell information to the second access network device; the second field indicates that the first access network device is sending the information to the The second access network device sends the second reconfiguration message before or after sending the second candidate primary and secondary cell information; wherein, the second candidate primary and secondary cell information indicates that the one or more second candidate primary and secondary cells The one or more second candidate primary and secondary cells are among the candidate primary and secondary cells requested by the second access network device to be added by the fourth access network device, and are accepted by the fourth access network device one or more candidate primary and secondary cells; the second reconfiguration message includes configuration information corresponding to the one or more second
  • the identifiers of the one or more first candidate primary-secondary cells may be selected by the third access network device among the candidate primary-secondary cells requested by the second access network device to be added by the third access network device
  • the identities of all the accepted candidate PSCs; the identities of the one or more second candidate PSCs may be among the candidate PSCs requested by the second access network device to be added by the fourth access network device, selected by the second 4.
  • the first indication information may further include the identifier of the third access network device and/or the identifiers of the one or more first candidate primary and secondary cells, and the identifier of the fourth access network device And/or identities of one or more second candidate primary and secondary cells.
  • the first indication information includes the identification of one or more candidate PSCs of the third access network device, but does not include the identification of the third access network device; the first indication information may include the fourth access network device The identity of one or more candidate primary and secondary cells of the network access device does not include the identity of the fourth access network device.
  • the first indication information includes the identity of the third access network device, but does not include the identity of one or more candidate primary and secondary cells; the first indication information may include the identity of the fourth access network device, and The identifiers of one or more candidate primary and secondary cells that do not include the fourth access network device.
  • FIG. 5 is an example of first indication information provided by the embodiment of the present application.
  • the first indication information includes: an identifier of the third access network device, an identifier of the fourth access network device, a first field, and a second field.
  • the first field may be one or more bits, and the second field may also be one or more bits.
  • the first field is "0" and the second field is "1"; the first field is "0” indicating that the first reconfiguration message is sent before the first candidate primary and secondary cell information is sent; the second field is "1 " indicates that the second reconfiguration message is sent after sending the second candidate primary and secondary cell information.
  • the first field is "00", the second field is “11”, and the first field is "00", indicating that the first reconfiguration message is sent before sending the first candidate primary and secondary cell information, and the second field is " 11" indicates that the second reconfiguration message is sent after sending the second candidate primary and secondary cell information.
  • the first field corresponds to the identifier of the third access network device
  • the second field corresponds to the identifier of the fourth access network device.
  • the first indication information may include identifiers of two or more T-SNs (such as the third access network device and the fourth access network device), and fields corresponding to each T-SN (such as the first field and second field). Table 1 shows an example of the identifiers of the T-SNs included in the first indication information and their corresponding fields.
  • the first field may correspond to one or more identifiers of access network devices
  • the second field may correspond to one or more identifiers of access network devices.
  • the first field corresponds to the identifier of the access network device 3 and the identifier of the access network device 4, and the first field indicates that the first access network device sends the candidate T-SN corresponding to the access network device 3 (a T-SN of the UE).
  • the sequence of the primary and secondary cell information and the reconfiguration message also indicates the sequence in which the first access network device sends the candidate primary and secondary cell information and the reconfiguration message corresponding to the access network device 4 (another T-SN of the UE).
  • one field can be used to indicate that the information of the primary and secondary cell candidates and the reconfiguration messages of multiple T-SNs are sent in the same sequence.
  • the first indication information includes two or more fields, and each field corresponds to an identifier of an access network device.
  • each field may independently indicate the sequence of candidate PSC information and reconfiguration messages corresponding to an access network device.
  • the granularity of the first indication information is per candidate-SN, and the first indication information can independently instruct the access network device 1 to send each T-SN of the UE (for example, the third access network device and the second
  • the sequence of each pair of candidate primary and secondary cell information and reconfiguration messages corresponding to four access network devices is highly flexible.
  • the third access network device is the T-SN of the UE
  • the first indication information includes an identifier of the third access network device, and does not include identifiers of other T-SNs of the UE.
  • the first indication information only includes the identifier of one T-SN (that is, the third access network device) of the UE, so as to instruct the access network device 1 to send each pair of T-SNs corresponding to the third access network device.
  • the sequence of the candidate primary secondary cell information and the reconfiguration message (for example, the first candidate primary secondary cell information and the first reconfiguration message) occupies few bits.
  • the granularity of the first indication information may be each pair of candidate primary and secondary cell information and reconfiguration message corresponding to each T-SN (for example, the third access network device).
  • the granularity of the first indication information may be each target secondary base station (a certain T-SN), that is, per T-SN.
  • each piece of indication information corresponds to a T-SN of the UE.
  • the second access network device sends indication information 1 (that is, first indication information) to access network device 1, and the first indication information only indicates that access network device 1 is sending the second access network device to the second access network device.
  • a first reconfiguration message is sent before (or after) information on a candidate primary and secondary cell; the second access network device sends indication information 2 to the access network device 1, and the first indication information only indicates that the access network device 1 is sending to the access network device 1
  • the second access network device sends the second reconfiguration message before (or after) sending the second candidate primary-secondary cell information.
  • the first indication information includes a third field, the third field corresponds to the identity of the one or more first candidate primary and secondary cells, and a fourth field, the first The four fields correspond to identities of one or more third candidate primary-secondary cells.
  • the third field indicates that the first access network device sends the first reconfiguration message after sending the first candidate primary and secondary cell information to the second access network device;
  • the fourth field indicates that the first access network device sends the information of the third candidate primary secondary cell corresponding to the one or more third candidate primary secondary cells to the second access network device
  • a third reconfiguration message corresponding to one or more third candidate primary and secondary cells; the one or more third candidate primary and secondary cells belong to one or more access network devices, and the one or more access network devices include The third access network device and/or other access network devices.
  • the third field also corresponds to the identifiers of one or more fourth candidate primary and secondary cells, and the third field also indicates that the first access network device is connecting to the second access network device.
  • the network device sends the fourth reconfiguration message corresponding to the one or more fourth candidate primary-secondary cells after sending the fourth candidate primary-secondary cell information corresponding to the one or more fourth candidate primary-secondary cells.
  • the third field instructs the first access network device to send the first reconfiguration message before sending the first candidate primary and secondary cell information to the second access network device;
  • the fourth field indicates that the first access network device sends the third candidate primary secondary cell information corresponding to the one or more third candidate primary secondary cells to the second access network device.
  • a third reconfiguration message corresponding to one or more third candidate primary and secondary cells; the one or more third candidate primary and secondary cells correspond to one or more access network devices.
  • the first indication information further includes identifiers of one or more fourth candidate primary and secondary cells corresponding to the third field, and the third field also indicates that the first access network device Before sending the information of the fourth candidate PSC corresponding to the one or more fourth candidate PSCs to the second access network device, sending the information corresponding to the one or more fourth candidate PSCs Quad configuration messages.
  • the above-mentioned one or more fourth candidate primary and secondary cells belong to one or more access network devices, and the one or more access network devices include the third access network device and/or other access networks serving as candidate T-SNs equipment.
  • the first indication information further includes identities of the one or more first candidate primary and secondary cells, and identities of the one or more third candidate primary and secondary cells.
  • one or more third candidate primary and secondary cells corresponding to the fourth field may belong to the same access network device, or may belong to different access network devices; the third field may correspond to Candidate primary and secondary cells.
  • the identifiers of one or more first candidate primary-secondary cells corresponding to the third field may be identifiers of a part of candidate primary-secondary cells accepted by the third access network device, or all candidates accepted by the third access network device The identifier of the primary and secondary cells.
  • the third access network device accepts the first candidate primary secondary cell 1 to the first candidate primary secondary cell 10 requested by the second access network device to be added by the third access network device, and the first candidate primary secondary cell 1 to The first candidate primary-secondary cell 4 corresponds to the third field, and the first candidate primary-secondary cell 5 to the first candidate primary-secondary cell 10 correspond to the fourth field.
  • the third field may instruct the first access network device to send the second PSC candidate information corresponding to the first primary secondary cell candidate 1 to the primary primary secondary cell candidate 4 to the second access network device A candidate primary secondary cell 1 to the first candidate primary secondary cell 4 correspond to the reconfiguration message;
  • the fourth field may indicate that the first access network device sends the first candidate primary secondary cell 5 to the first primary secondary cell to the second access network device Before the information of the candidate primary secondary cell corresponding to the candidate primary secondary cell 10, the reconfiguration messages corresponding to the first candidate primary secondary cell 5 to the first candidate primary secondary cell 10 are sent.
  • the candidate PSCs it receives or rejects can be divided into two parts, one part corresponds to the third field, and the other part corresponds to the fourth field.
  • the candidate PSCs accepted or rejected by it may also correspond to the third field or the fourth field.
  • the third field it may correspond to identities of candidate primary and secondary cells belonging to different access network devices, or may only correspond to identities of one or more candidate primary and secondary cells belonging to the same access network device.
  • the fourth field it may correspond to identities of candidate primary and secondary cells belonging to different access network devices, or may only correspond to identities of one or more candidate primary and secondary cells belonging to the same access network device.
  • the first indication information may independently indicate the order in which the access network device 1 sends the reconfiguration message corresponding to each candidate primary-secondary cell and the information about the candidate primary-secondary cell.
  • the granularity of the first indication information may be the candidate primary secondary cell information and the reconfiguration message corresponding to each candidate primary secondary cell. In other words, the granularity of the first indication information may be each candidate primary and secondary cell, that is, per PSCell.
  • FIG. 6A is an example of another kind of first indication information provided in the embodiment of the present application. As shown in FIG.
  • the first indication information includes: a third field, identifiers 1 to K corresponding to the third field (including the identifiers of one or more first candidate primary and secondary cells and the identifiers belonging to other access network devices Candidate primary and secondary cells), a fourth field, and identifiers M to P corresponding to the fourth field (identities of one or more third candidate primary and secondary cells).
  • K, M, and P are all integers greater than 1, and P is greater than M.
  • the third field may be one or more bits, and the fourth field may also be one or more bits.
  • the third field is 0, and the fourth field is 1.
  • the third field is 00, and the fourth field is 11.
  • the first indication information may include identifiers of two or two candidate primary-secondary cells, and each candidate primary-secondary cell corresponds to a field (for example, a third field or a fourth field).
  • Table 2 shows an example of each candidate PSC and its corresponding field included in the first indication information.
  • Identification of candidate primary and secondary cells field The first candidate primary and secondary cell 1 (identity 1) third field The first candidate primary and secondary cell 2 (identity 2) third field The third candidate primary and secondary cell 3 (identity 3) third field ... ...
  • different candidate primary and secondary cells belonging to the same access network device may correspond to different fields, for example, the first candidate primary secondary cell 2 (identity 2) corresponds to the third field, and the first candidate primary secondary cell 3 (Identifier N+1) corresponds to the fourth field.
  • one field may correspond to multiple primary and secondary candidate cells belonging to different access network devices.
  • the identity of the candidate primary and secondary cells may be a global cell identity (Cell Global Identifier, CGI) or PCI.
  • the first indication information further includes an identifier of the third access network device, and the identifiers of one or more first primary and secondary candidate cells correspond to the identifier of the third access network device.
  • the identifiers of one or more first primary and secondary candidate cells can be temporary numbers, so that the access network device 1 can determine one or more first candidate primary and secondary cells in combination with the identifier of the third access network device and For multiple first candidate primary and secondary cells, the identifiers of one or more first candidate primary and secondary cells may occupy fewer bits.
  • the identification of one or more third candidate primary and secondary cells includes: number 1, number 2, number 3, number 4, number 5; access network device 1 combined with the identification of the third access network device and number 1 , No. 2, No. 3, No. 4, and No. 5 (numbers of primary and secondary candidate cells of the third access network device) may determine one or more first candidate primary and secondary cells.
  • the granularity of the first indication information is per PSCell, and the first indication information can independently instruct the access network device 1 to send to the second access network device the reconfiguration message corresponding to each candidate primary and secondary cell and the candidate
  • the sequence of primary and secondary cell information has high flexibility and less signaling overhead.
  • the first candidate primary and secondary cell information indicates that among the candidate primary and secondary cells that the second access network device requests the third access network device to add, the primary and secondary cells that are accessed by the third access network device One of the first candidate primary and secondary cells accepted by the network equipment; the first reconfiguration message includes the configuration information corresponding to the one first candidate primary secondary cell; the first indication information includes a fifth field, which is related to the An identifier of a first candidate primary-secondary cell corresponding to the fifth field, where the fifth field indicates that the first access network device sends the first candidate primary-secondary cell information to the second access network device before or after , sending the first reconfiguration message.
  • the fifth field only corresponds to the identifier of one candidate primary-secondary cell.
  • the first indication information may include two or more fields (including the fifth field) and two or more candidate primary and secondary cells corresponding to the two or more fields one-to-one. Identification; each field indicates the order in which the second access network device sends the candidate PSC information and the reconfiguration message corresponding to a candidate PSC indicated by the field.
  • FIG. 6B is an example of another kind of first indication information provided in the embodiment of the present application.
  • the first indication information includes: the first indication information includes: ID 1, field 1 corresponding to ID 1, ID 2, field 2 corresponding to ID 2, ..., ID H, ID corresponding to ID H Field H, each identifier is the identifier of a candidate primary and secondary cell of the UE, identifiers 1 to H may belong to the same access network device, or may belong to different access network devices; each field indicates the second access network The sequence in which the device sends the candidate PSC information and reconfiguration messages corresponding to this field.
  • Each of field 1 to field H is either of two different fields. For example, each of Field 1 to Field H is either one of 1 and 1.
  • field 1 is 0, and field 1 indicates that the second access network device sends the reconfiguration message corresponding to the identifier 1 before sending the candidate PSC information corresponding to the identifier 1;
  • field 2 is 1, and field 2 indicates The second access network device sends the reconfiguration message corresponding to the identifier 2 after sending the candidate PSC information corresponding to the identifier 2.
  • each candidate primary and secondary cell corresponds to one field, which has high reliability and can be configured flexibly.
  • FIG. 7 is a flow chart of another communication method provided by the embodiment of the present application.
  • the method flow in FIG. 7 is a possible implementation of the method flow in FIG. 4 .
  • the method flow includes:
  • Access network device 1 receives first indication information from a second access network device.
  • step 701 refer to step 401.
  • the first indication information instructs the access network device 1 to send the first reconfiguration message to the UE after sending the information of the first candidate PSC to the second access network device.
  • the first candidate primary-secondary cell information indicates one or more first candidate primary-secondary cells accepted by the third access network device among the candidate primary-secondary cells requested by the second access network device to be added by the third access network device.
  • the first reconfiguration message includes configuration information corresponding to one or more first candidate primary and secondary cells.
  • the first indication information also instructs the access network device 1 to send a second reconfiguration message after sending the second candidate primary and secondary cell information to the second access network device;
  • the second candidate primary and secondary cell information indicates that the second access network device Request the fourth access network device to add one or more second candidate primary and secondary cells accepted by the fourth access network device;
  • the second reconfiguration message includes one or more second candidate primary and secondary cells Configuration information corresponding to the cell.
  • the first indication information may include an identifier of the second access network device.
  • the granularity of the first indication information is per S-SN.
  • the access network device 1 sends the first reconfiguration message to the UE after sending the first candidate primary and secondary cell information to the second access network device according to the first indication information.
  • the access network device 1 sends a second reconfiguration message to the UE after sending information about the second candidate primary and secondary cells to the second access network device according to the first indication information.
  • the first indication information instructs the access network device 1 to send the first reconfiguration message to the UE before sending the first candidate primary and secondary cell information to the second access network device; and also instructs the access network device 1 to Before sending the second candidate primary and secondary cell information to the second access network device, send the second reconfiguration message;
  • step 702 may be replaced by: the access network device 1 sends the second information to the second access network device according to the first indication information Before sending the first candidate primary and secondary cell information, send the first reconfiguration message to the UE;
  • step 703 can be replaced by: the access network device 1 sends the second candidate primary and secondary cell information to the second access network device according to the first indication information.
  • a second reconfiguration message is sent to the UE.
  • the first reconfiguration message and the second reconfiguration information may be included in the same piece of reconfiguration information (eg RRC reconfiguration message). That is to say, the access network device 1 sends a reconfiguration message including the first reconfiguration message and the second reconfiguration message to the UE, that is, the first reconfiguration message and the second reconfiguration message are sent together. In these embodiments, the first reconfiguration message and the second reconfiguration message are sent through one reconfiguration message, which can reduce signaling overhead.
  • RRC reconfiguration message eg RRC reconfiguration message
  • the first reconfiguration message and the second reconfiguration message are two different messages, that is, the first reconfiguration message and the second reconfiguration message are not sent together.
  • the access network device 1 may first send the first reconfiguration message and then send the second reconfiguration message, or may first send the second reconfiguration message and then send the first reconfiguration message.
  • the access network device 1 sends the second reconfiguration message after receiving the confirmation message of the addition request of the secondary base station from the fourth access network device, and the confirmation message of the addition request of the secondary base station indicates that the second access network device requests the fourth Among the candidate primary-secondary cells added by the access network device, one or more second candidate primary-secondary cells accepted by the fourth access network device.
  • the first reconfiguration message and the second reconfiguration message are sent separately, which can enable the UE to receive a part of the reconfiguration message faster, with high flexibility.
  • the access network device 1 sends the first reconfiguration message and the second reconfiguration message through one message, or sends the first reconfiguration message and the second reconfiguration message through multiple messages.
  • the granularity of the first indication information is per S-SN, and the first indication information can instruct the access network device 1 to send the second A reconfiguration message; it can also instruct the access network device 1 to send a second reconfiguration message after sending the second candidate primary and secondary cell information to the second access network device.
  • the second access network device does not need to additionally send indication information instructing the access network device 1 to send the first reconfiguration message after sending the first candidate primary-secondary cell information to the second access network device; signaling overhead is reduced.
  • FIG. 8 is a flow chart of another communication method provided by the embodiment of the present application.
  • the method flow in FIG. 8 is a possible implementation of the method described in FIG. 4 . As shown in Figure 8, the method flow includes:
  • Access network device 1 receives first indication information from a second access network device.
  • step 801 refer to step 401.
  • the first indication information instructs the access network device 1 to send the first reconfiguration message after sending the information of the first candidate PSC to the second access network device.
  • the first indication information also instructs the access network device 1 to send the second reconfiguration message before sending the information of the second candidate PSC to the second access network device.
  • the first indication information includes a first field, a second field, an identifier of the third access network device corresponding to the first field, and an ID of the fourth access network device corresponding to the second field.
  • the first field indicates that the access network device 1 sends the first reconfiguration message after sending the information of the first primary and secondary cell candidate to the second access network device;
  • the second field indicates that the access network device 1 sends the first reconfiguration message to the second access network device The network access device sends the second reconfiguration message before sending the information of the second candidate primary and secondary cells.
  • the granularity of the first indication information is per candidate-SN.
  • the access network device 1 sends the first reconfiguration message to the UE after sending the first candidate primary and secondary cell information to the second access network device according to the first field.
  • the access network device 1 sends a second reconfiguration message to the UE according to the second field before sending the second candidate primary and secondary cell information to the second access network device.
  • step 802 may be replaced by: the access network device 1 sends the first reconfiguration message to the UE according to the first field before sending the first candidate primary and secondary cell information to the second access network device;
  • step 803 may be replaced by: the access network device 1 sends the second reconfiguration message to the UE after sending the second candidate primary and secondary cell information to the second access network device according to the second field.
  • the first indication information may independently indicate the order in which the access network device 1 sends the first reconfiguration message and the first candidate primary and secondary cell information, and the access network device 1 sends the second reconfiguration message and the sequence of the second candidate primary and secondary cell information; less signaling overhead.
  • FIG. 9 is a flow chart of another communication method provided by the embodiment of the present application.
  • the method flow in FIG. 9 is a possible implementation of the method described in FIG. 4 . As shown in Figure 9, the method flow includes:
  • Access network device 1 receives first indication information from a second access network device.
  • step 901 refer to step 401.
  • the first indication information instructs the access network device 1 to send the first reconfiguration message to the UE after or before sending the first candidate primary-secondary cell information to the second access network device.
  • the third access network device is a T-SN of the UE, and the first indication information may include the identifier of the third access network device and the first field, and the first field indicates that the access network device 1 is sending a T-SN to the second access network device After or before sending the first candidate primary and secondary cell information, send the first reconfiguration message.
  • the access network device 1 sends the first reconfiguration message to the UE after or before sending the first candidate primary and secondary cell information to the second access network device according to the first indication information.
  • the access network device 1 receives third indication information from the second access network device.
  • the third indication information instructs the access network device 1 to send the second reconfiguration message to the UE after or before sending the second candidate primary-secondary cell information to the second access network device.
  • the fourth access network device is another T-SN of the UE, and the third indication information may include an identifier of the fourth access network device and a second field, and the second field indicates that the access network device 1 is sending to the second access network
  • the device sends the second reconfiguration message after or before sending the second candidate primary and secondary cell information.
  • Both the granularity of the first indication information and the granularity of the third indication information are per candidate-SN.
  • the access network device 1 sends the second reconfiguration message to the UE after or before sending the information of the second candidate PSC to the second access network device according to the third indication information.
  • the granularity of the indication information is per candidate-SN, and each indication information independently indicates the order in which the access network device 1 sends the candidate primary and secondary cell information corresponding to one T-SN of the UE and the reconfiguration message , strong flexibility.
  • FIG. 10 is a flow chart of another communication method provided by the embodiment of the present application.
  • the method flow in FIG. 10 is a possible implementation of the method described in FIG. 4 . As shown in Figure 10, the method flow includes:
  • Access network device 1 receives first indication information from a second access network device.
  • step 1001 refer to step 401.
  • the first indication information includes a third field, identifiers of one or more first candidate primary and secondary cells corresponding to the third field, a fourth field, and one or more third The identifier of the candidate primary and secondary cell, the third field indicates that the first access network device sends the first reconfiguration message after sending the first candidate primary and secondary cell information to the second access network device; the fourth field indicates Before sending the third candidate PSC information corresponding to the one or more third candidate PSCs to the second access network device, the first access network device sends the information corresponding to the one or more third candidate PSCs.
  • a triple configuration message; the one or more third candidate primary and secondary cells belong to one or more access network devices.
  • the granularity of the first indication information is per PSCell.
  • the second access network device determines to use cell1 and cell2 managed by the third access network device as candidate PScells for the UE; the identifier of cell1 corresponds to the third field, and the identifier of cell2 corresponds to the fourth field.
  • the access network device 1 sends the first reconfiguration message to the UE after sending the first candidate primary and secondary cell information to the second access network device according to the third field.
  • the access network device 1 sends a third reconfiguration message to the UE before sending the information of the third candidate PSC to the second access network device.
  • step 1002 may be replaced by: the access network device 1 sends the first reconfiguration message to the UE according to the third field before sending the first candidate primary and secondary cell information to the second access network device;
  • step 1003 may be replaced by: the access network device 1 sends the third reconfiguration message to the UE after sending the third candidate primary and secondary cell information to the second access network device according to the fourth field.
  • the granularity of the first indication information is per PSCell, and the first indication information may independently indicate the order in which the access network device 1 sends the first reconfiguration message and the first candidate primary and secondary cell information, and the order in which the access network device 1 sends the first reconfiguration message and the information of the first candidate primary and secondary cells
  • the order in which the network access device 1 sends the third reconfiguration message and the third candidate primary and secondary cell information has less signaling overhead.
  • FIG. 11 is a flow chart of another communication method provided by the embodiment of the present application.
  • the method flow in FIG. 11 is a possible implementation of the method described in FIG. 4 .
  • the S-SN may be the above-mentioned second access network device, that is, the current secondary base station of the UE;
  • the MN may be the above-mentioned access network device 1, that is, the primary base station of the UE;
  • the candidate SN (candidate-SN) may also be called
  • the candidate target SN may be the above-mentioned third access network device, that is, the T-SN of the UE.
  • the method flow includes:
  • the S-SN sends a SeNB handover request message to the MN.
  • the secondary base station handover request (SN change required) message may include the identity (identity, ID) of the candidate SN, a list of candidate primary and secondary cells (candidate PSCell list), and S-SN-RRCReconfiguration.
  • candidate-candidate SN may be the SN corresponding to one or more PSCells that the S-SN wants to add.
  • the candidate PSCell list contains one or more PSCell IDs (that is, the identification of one or more PSCells that the S-SN wants to add), and the execution condition (execution condition) ID corresponding to each PSCell ID.
  • S-SN-RRCReconfiguration contains measurement-related information, such as measurement ID. The measurement ID here corresponds to the execution condition ID.
  • the SeNB handover request message includes the above-mentioned first indication information.
  • the first indication information instructs the MN (that is, the access network device 1) to send the first reconfiguration message before sending the information of the first candidate PSC to the S-SN (that is, the second access network device).
  • the first indication information may be sent to the MN through the S-SN during the handover preparation period, or may be sent to the MN through the S-SN before the handover preparation period.
  • the first indication information may be included in the SN change required message, and the first indication information may also be sent in other signaling, or may be sent separately.
  • the information may not be carried in every CPC process initiated by the S-SN, if no new indication information (such as the second indication information) is received, the received first indication information may be used by default.
  • the first indication information may be per S-SN, per candidate-SN, per PSCell granularity.
  • the MN sends a secondary base station addition request to the candidate SN.
  • the MN can send a secondary base station addition request to the indicated candidate SN according to the candidate SN ID.
  • the secondary base station addition request (SN addition request) may include a CAPA indicator (indicator) field, where the CAPA indicator field indicates that the message is a CPAC request rather than a PAC request; and a candidate PSCell list.
  • the candidate SN determines one or more first candidate primary and secondary cells accepted by the S-SN among the candidate primary and secondary cells requested by the candidate SN to add.
  • the secondary base station addition request includes the candidate PSCell list, and the candidate PSCell list includes the candidate primary and secondary cells that the S-SN requests the candidate SN to add.
  • the S-SN may decide one or more first candidate primary secondary cells it accepts.
  • the S-SN determines the candidate SN and one or more PSCells corresponding to it, but the candidate SN may not completely accept all the PSCells requested by the S-SN, which may be due to the overload of some PSCells or insufficient resources. Reject some PSCells and accept the remaining PSCells.
  • Step 1103 can be understood as the candidate SN executes the PSCell decision operation.
  • the candidate SN sends a secondary base station addition request confirmation message to the MN.
  • the secondary base station addition request acknowledgment message may include one or more PSCell IDs accepted by the candidate SN (that is, IDs of one or more first candidate primary and secondary cells), and the one or more PSCell IDs associated with the one or more PSCell IDs.
  • Corresponding T-SN-RRCReconfiguration message corresponds to a T-SN-RRCReconfiguration message, that is, each PSCell corresponds to a T-SN-RRCReconfiguration message.
  • the MN generates an RRC reconfiguration message.
  • the MN generates (generate) an RRC reconfiguration message (RRCReconfiguration message, that is, the first reconfiguration message) may be: the SeNB handover request message sent by the MN to the MN according to the S-SN and the SeNB addition request confirmation message sent to the MN by the candidate SN , generating a CPC message, where the CPC message is an RRCReconfiguration message.
  • the CPC message may include the S-SN-RRCReconfiguration sent by the S-SN to the MN.
  • the measurement ID is included in S-SN-RRCReconfiguration.
  • the CPC message also includes conditional primary and secondary cell information (conditional primary and secondary cell information), and the conditional primary and secondary cell information may contain one or more PSCell IDs (that is, IDs of one or more first candidate primary and secondary cells accepted by the candidate SN) , the execution condition ID corresponding to the one or more PSCell IDs, the T-SN-RRCReconfiguration message corresponding to the PSCell ID, and the MN-RRCReconfiguration message corresponding to the one or more PSCell IDs.
  • the MN-RRCReconfiguration message is new configuration information corresponding to the MN when the UE accesses a new PSCell.
  • the execution condition ID and the measurement ID are corresponding in this step, which can be understood as the contents represented by the execution condition ID and the measurement ID are the same.
  • the granularity of the RRC reconfiguration message generated by the MN may also be per S-SN, per candidate-SN or per PSCell.
  • the MN sends the RRC reconfiguration message to the UE.
  • the UE sends an RRC reconfiguration complete message to the MN.
  • the RRC reconfiguration complete message (RRCReconfiguration message) is used by the MN to confirm that the UE has successfully received the RRCReconfiguration message.
  • the MN sends information about the first candidate primary and secondary cells to the S-SN.
  • the first candidate primary and secondary cell information indicates one or more first candidate primary and secondary cells accepted by the candidate SN among the candidate primary and secondary cells that the S-SN requests the candidate SN to add.
  • the one or more first candidate primary and secondary cells may be candidate primary and secondary cells accepted by the candidate SN, that is, accepted candidate. It can be seen that the first candidate primary and secondary cell information can indicate which PSCells are accepted by the candidate SN and which PSCells are rejected by the candidate SN.
  • the S-SN sends the updated source SeNB RRC reconfiguration message to the MN.
  • Step 1109 is optional but not necessary. If the S-SN requests that all the PSCells added by the candidate SN are accepted and configured by the candidate SN, there is no such step; if the S-SN requests that part of the PSCells added by the candidate SN be configured, the S-SN sends an update to the MN After the S-SN-RRCReconfiguration message.
  • the S-SN initially configures PSCell 1, PSCell 2, and PSCell 3 as candidate primary and secondary cells, wherein PSCell 1 and PSCell 2 are of the same frequency, and PSCell 3 and PSCell 1 and PSCell 2 are different frequency cells, then in step 1101, S - The SN-RRCReconfiguration message needs to configure the measurement gap; but if the candidate SN rejects PSCell3 and accepts PSCell 1 and PSCell 2, the measurement gap is not required for the same frequency cell, and the S-SN-RRCReconfiguration message in step 11099 is no longer configured Measure the gap.
  • the MN sends the updated source SeNB RRC reconfiguration message to the UE.
  • the UE sends an RRC reconfiguration complete message to the MN.
  • the UE After successfully receiving the updated source SeNB RRC reconfiguration message from the MN, the UE sends RRCReconfigurationComplete to the MN.
  • the MN sends an update confirmation message to the SN.
  • the update confirmation message (update confirm) is used to tell the SN that the new S-SN-RRCReconfiguration message has been successfully received by the UE.
  • the first indication information instructs the MN to send the first reconfiguration message before sending the information of the first candidate PSC to the S-SN.
  • the MN may first send the first reconfiguration message, and then send the first candidate primary and secondary cell information, so that the CPC process can be executed normally.
  • the MN sends the first reconfiguration message first, and then sends the information of the first candidate primary and secondary cells, so that the candidate primary and secondary cells can be updated for the UE more quickly.
  • FIG. 12 is a flow chart of another communication method provided by the embodiment of the present application.
  • the method flow in FIG. 12 is a possible implementation of the method flow in FIG. 4 .
  • the S-SN (source SN, source-SN) may be the above-mentioned second access network device, that is, the current secondary base station of the UE;
  • the MN may be the above-mentioned access network device 1, that is, the primary base station of the UE; candidate SN It may be the above-mentioned third access network device, that is, the T-SN of the UE.
  • the method flow includes:
  • the S-SN sends a SeNB handover request message to the MN.
  • step 1201 refer to step 1101.
  • the SeNB handover request message includes the above-mentioned first indication information.
  • the first indication information instructs the MN (that is, the access network device 1) to send the first reconfiguration message after sending the information of the first candidate PSC to the S-SN (that is, the second access network device).
  • the MN sends a secondary base station addition request to the indicated candidate SN according to the candidate SN ID.
  • step 1202 refer to step 1102.
  • the candidate SN determines one or more first candidate primary and secondary cells accepted by the candidate SN among the candidate primary and secondary cells that the S-SN requests the candidate SN to add.
  • step 1203 refer to step 1103.
  • the candidate SN sends a secondary base station addition request confirmation message to the MN.
  • step 1204 refer to step 1104.
  • the MN sends information about the first candidate primary and secondary cells to the S-SN.
  • step 1205 refer to step 1108.
  • the S-SN sends the updated source SeNB RRC reconfiguration message to the MN.
  • Step 1206 is optional, but not necessary. Step 1206 may refer to step 1109 .
  • the MN generates an RRC reconfiguration message.
  • step 1207 refer to step 1105.
  • the MN sends the RRC reconfiguration message to the UE.
  • step 1208 refer to step 1106.
  • the UE sends an RRC reconfiguration complete message to the MN.
  • step 1209 refer to step 1107.
  • the MN sends an update confirmation message to the SN.
  • step 1210 refer to step 1112.
  • the first indication information instructs the MN to send the first reconfiguration message after sending the information of the first primary and secondary candidate candidate to the S-SN.
  • the MN may first send the first candidate primary and secondary cell information, and then send the first reconfiguration message, so that the CPC process can be executed normally.
  • the method flow in FIG. 12 is that the MN only needs to send a reconfiguration message to the UE once, and the signaling overhead is less.
  • This application also provides a solution for enabling the network side to know the reason why the CPAC is not triggered in the scenario where the UE triggers the CHO and does not trigger the conditional PSCell addition and change (CPAC) CPAC.
  • CPAC conditional PSCell addition and change
  • FIG. 13 is a flow chart of another communication method provided by the embodiment of the present application. As shown in Figure 13, the method includes:
  • the UE accesses the target primary cell of the first access network device.
  • step 1301 is as follows: when CHO is triggered, the UE accesses the target primary cell of the first access network device (hereinafter referred to as access network device 2). That is to say, the UE accesses the target primary cell of the first access network device under the condition of satisfying switching of the primary cell (that is, triggering CHO).
  • access network device 2 the target primary cell of the first access network device under the condition of satisfying switching of the primary cell (that is, triggering CHO).
  • the UE sends first indication information to the first access network device without triggering CPAC.
  • the first indication information (indication information 2) is used to determine the reason why the UE does not trigger CPAC.
  • the UE may be configured with CHO trigger conditions, and configuration information and trigger conditions of one or more candidate PSCells (that is, CPAC configuration information).
  • the source PCell (corresponding to the source main base station) delivers CHO configuration information (for configuring CHO) to the UE, for each candidate PCell, it may include at least Configuration information and trigger conditions of a candidate PSCell(s) (that is, CPAC configuration information).
  • the CHO is for the handover of the PCell under the MN
  • the CPAC is for the change of the PSCell under the SN.
  • the CHO configuration information can be used to configure one or more CHOs (each CHO corresponds to one or more candidate PCells), the CPAC configuration information can be used to configure one or more CPACs (each CPAC corresponds to one or more candidate PSCells), and the One or more CHOs have a corresponding relationship with the one or more CPACs.
  • Each CHO corresponding to one or more candidate PCells means that the CHO is a trigger condition for switching the one or more candidate PCells to the UE's PCell.
  • CHO configuration information is used to configure CHO1 (corresponding to candidate PCell1) and CHO2 (corresponding to candidate PCell2)
  • CPAC configuration information is used to configure CPAC1 (corresponding to candidate PSCell1), CPAC2 (corresponding to candidate PSCell2), CPAC3 (corresponding to candidate Candidate PSCell3), CPAC4 (corresponding to candidate PSCell4)
  • CHO 1 corresponds to CPAC1 and CPAC2
  • CHO 2 corresponds to CPAC3 and CPAC4.
  • one CHO may correspond to one or more CPACs, because one PCell may correspond to one or more candidate PSCells.
  • While configuring the CHO, for multiple candidate PCells, related configurations of PSCells corresponding to the candidate PCells may be provided.
  • the UE will try to access the target PCell (i.e., the target primary cell), and the PSCell under the target PCell also meets the CPAC triggering condition, and the UE will also try to change the PSCell (PCell handover and The change of the PSCell can be performed at the same time for random access, or can be performed one after the other).
  • the UE when it completes CHO, it will send RRC signaling to the target PCell, which may include cell information (cell ID, etc.) and measurement information (cell signal strength signal Quality, etc.), for subsequent addition or modification of candidate PSCells.
  • the target PCell which may include cell information (cell ID, etc.) and measurement information (cell signal strength signal Quality, etc.), for subsequent addition or modification of candidate PSCells.
  • the UE may also perform the following operations: the UE sends a measurement report to the access network device 2; the measurement report is used for the access network device 2 to update the configuration of the CPAC.
  • the measurement report is determined by the UE according to the last received measurement configuration, which may include the measurement results of candidate PSCells and the measurement results of neighboring cells or other cells.
  • the purpose of the UE reporting the measurement report is to allow the target MN (that is, the access network device 2) to update the CPAC configuration, such as candidate PSCells, handover thresholds, and the like.
  • the target MN needs to use a new measurement report to update the CPAC configuration. For example, UE has measured all candidate PSCells, but none of them meet the trigger conditions of CPAC, indicating that the trigger conditions set by CPAC are too strict, and CAPC can be triggered more easily by lowering some CPAC trigger thresholds, thereby achieving optimization results.
  • the access network device 2 finds in the measurement report that the signal quality of some neighboring cells is better, for example, higher than a preset threshold, and these neighboring cells may be added to the CPAC configuration.
  • the access network device 2 may delete these candidate PSCells after finding that the signal quality of the cells of the configured candidate PSCells is poor, such as lower than a preset threshold, according to the measurement report.
  • the UE accesses the target MN, it directly reports the current measurement report to the target MN, which can shorten the time for the target MN to configure the CPAC.
  • the target MN can also optimize the CPAC configuration according to the measurement report.
  • the UE can report a complete measurement report to the MN, or only report the measurement report related to the PSCell under the PCell that triggers the CHO to the MN.
  • the measurement report includes target parameters of each candidate primary and secondary cell corresponding to the target primary cell; the target parameters include one or more of the following: RSRP, RSRQ, and SINR.
  • the target parameter may be obtained by measurement when the UE judges whether the CPAC triggering condition is satisfied.
  • the UE sends indication information 2 (hereinafter referred to as indication information 2) to the access network device 2 without triggering CPAC, so that the access network device 2 can determine the reason why the UE does not trigger CPAC.
  • indication information 2 may enable the access network device 2 to know more detailed information why the CPAC is not triggered.
  • the indication information 22 indicates that the UE has measured all the candidate primary and secondary cells corresponding to the target primary cell, and none of the candidate primary secondary cells corresponding to the target primary cell meets the CPAC triggering condition.
  • the indication information 2 is an explicit indication, and the indication information 2 may include a pre-agreed field, for example, 111 .
  • the indication information 2 can make the access network device 2 know that the reason why the UE does not trigger CPAC is that the UE has measured all the candidate primary and secondary cells corresponding to the target primary cell, but the None of the candidate primary and secondary cells meets the CPAC triggering condition.
  • the subsequent access network device 2 can learn that the CPAC trigger condition may be configured too high according to the indication information 2, and then optimize the handover threshold.
  • the indication information 2 indicates that the UE has not measured a candidate primary and secondary cell corresponding to the target primary cell.
  • the indication information 2 is an explicit indication, and the indication information 2 may include a preset field, such as 000.
  • the indication information 2 can make the access network device 2 know that the reason why the UE does not trigger CPAC is that the UE has not measured a candidate primary and secondary cell corresponding to the target primary cell. Subsequent access network device 2 can know that there is a problem with the configured candidate PSCell according to the indication information 2, and may need to add a new PSCell or delete some or all of the configured PSCells.
  • the indication information 2 indicates that the UE has measured some candidate primary and secondary cells corresponding to the target primary cell, and none of the candidate primary secondary cells that have been measured by the UE meets the CPAC triggering condition.
  • the indication information 2 is an explicit indication, and the indication information 2 may include a pre-agreed field, such as 010.
  • the indication information 2 can make the access network device 2 know that the reason why the UE does not trigger CPAC is that the UE has measured some candidate primary and secondary cells corresponding to the target primary cell, but the candidate primary and secondary cells that have been measured by the UE The primary and secondary cells do not meet the CPAC triggering conditions.
  • Subsequent access network device 2 may infer that the configuration of CPAC trigger conditions may be high (for example, the handover threshold is high) according to the indication information 2, so that the handover threshold can be optimized; it may also be that the UE has not finished measuring, and the existing Configuration.
  • the indication information 2 indicates that neither the measurement status of each candidate primary-secondary cell corresponding to the target primary cell nor each candidate primary-secondary cell that has been measured by the UE satisfies the CPAC triggering condition.
  • 4 candidate PSCells are configured under PCell, PSCell 1/2/3/4, and the indication information 2 reported by the UE includes: ⁇ PSCell 1, measured, does not meet CPAC ⁇ , ⁇ PSCell 2, measured, does not meet CPAC ⁇ , ⁇ PSCell 3, measured, CPAC not met ⁇ , ⁇ PSCell4, measured, CPAC not met ⁇ .
  • 4 candidate PSCells are configured under the PCell, PSCell 1/2/3/4, and the indication information 2 reported by the UE includes: ⁇ PSCell 1, unmeasured ⁇ , ⁇ PSCell 2, unmeasured ⁇ , ⁇ PSCell 3, unmeasured ⁇ , ⁇ PSCell 4, unmeasured ⁇ .
  • 4 candidate PSCells are configured under the PCell, PSCell 1/2/3/4, and the indication information 2 reported by the UE includes: ⁇ PSCell 1, measured, does not meet CPAC ⁇ , ⁇ PSCell 2, measured, not satisfied Satisfy CPAC ⁇ , ⁇ PSCell 3, not measured ⁇ , ⁇ PSCell 4, not measured ⁇ .
  • the indication information 2 may enable the access network device 2 to know the measurement situation of each candidate primary and secondary cell corresponding to the target primary cell.
  • the indication information 2 indicates the candidate primary-secondary cells that have been measured by the UE among the candidate primary-secondary cells corresponding to the target primary cell, and none of the candidate primary-secondary cells that have been measured by the UE meets the CPAC triggering condition .
  • the UE only reports the relevant information of the measured PSCells through the indication information 2, but the reported PSCells are all the PSCells configured by the network side for the PCell, and the reported PSCells all show that they do not meet CPAC. Implicit indication.
  • 4 candidate PSCells are configured under PCell, PSCell 1/2/3/4, and the indication information 2 reported by the UE includes: ⁇ PSCell1, measured, does not meet CPAC ⁇ , ⁇ PSCell 2, measured, does not meet CPAC ⁇ , ⁇ PSCell 3, has been measured, does not meet CPAC ⁇ , ⁇ PSCell 4, has been measured, does not meet CPAC ⁇ , 4 PSCells are configured on the network side, and the UE also reports 4 PSCells, which implicitly indicates that all PSCells are Measured, but none of the CPAC conditions are met.
  • 4 candidate PSCells, PSCell 1/2/3/4 are configured under the PCell, but the UE does not report the information of the PSCells related to the 4 configured candidate cells through the indication information 2, and implicitly indicates all PSCell has been measured, but none of them meet the CPAC conditions.
  • 4 candidate PSCells are configured under PCell, PSCell 1/2/3/4, but the indication information 2 reported by the UE includes: ⁇ PSCell 1, measured, does not meet CPAC ⁇ , ⁇ PSCell 2, measured, CPAC is not satisfied, and no information about PSCell 3/4 is reported, indicating that PSCell 3/4 has not been measured.
  • FIG. 14 is a flow chart of another communication method provided by the embodiment of the present application.
  • the method flow in FIG. 14 corresponds to the method flow in FIG. 13
  • FIG. 13 describes the method flow executed by the UE
  • FIG. 14 describes the method flow executed by the access network device.
  • the method includes:
  • the access network device 2 receives indication information 2 from the UE.
  • Step 1401 corresponds to step 1301 in FIG. 13 .
  • the access network device 2 determines the reason why the UE does not trigger CPAC according to the indication information 2.
  • the UE may further perform the following operations: the access network device 2 receives a measurement report from the UE; the measurement report is used for the access network device 2 to update the configuration of the CPAC.
  • the access network device 2 determines the reason why the UE does not trigger CPAC according to the indication information 2, and then optimizes the configuration of the CPAC. Optimizing the configuration of the CPAC may include deleting and adding candidate PSCells.
  • the indication information 2 may enable the access network device 2 to know more detailed information why the CPAC is not triggered.
  • FIG. 15 is a flow chart of another communication method provided by the embodiment of the present application. As shown in Figure 15, the method includes:
  • the UE accesses the target primary cell of the access network device 2.
  • step 1501 refer to step 1301.
  • the UE sends a measurement report to the access network device 2 without triggering CPAC.
  • the measurement report is used for the access network device 2 to update the configuration of the CPAC.
  • the measurement report in FIG. 15 is the same as the measurement report in the previous embodiments.
  • the UE sends a measurement report to the access network device 2 without triggering the CPAC, so that the access network device 2 updates the configuration of the CPAC according to the measurement report.
  • FIG. 16 is a flow chart of another communication method provided by the embodiment of the present application.
  • the method flow in FIG. 16 corresponds to the method flow in FIG. 15 .
  • FIG. 15 describes the method flow executed by the UE, and
  • FIG. 16 describes the method flow executed by the access network device. As shown in Figure 16, the method includes:
  • Access network device 2 receives a measurement report from a UE.
  • Step 1601 corresponds to step 1501 .
  • the access network device 2 updates the configuration of the CPAC according to the measurement report.
  • step 1602 is as follows: according to the measurement report, update the trigger threshold (or handover threshold) of each candidate PSC or CPAC corresponding to the target Pcell. According to the measurement report, the access network device 2 updates the configuration of the CPAC, which may include one or more of the following: deleting a PSCell, adding a candidate PSCell, and updating a handover threshold.
  • the access network device 2 updates the configuration of the CPAC according to the measurement report.
  • the configuration of the CPAC By updating the configuration of the CPAC, the primary and secondary cell handover of the UE can be better realized, and the communication quality of the UE can be improved.
  • FIG. 17 is a flow chart of another communication method provided by the embodiment of the present application.
  • the method flow in Fig. 17 is the method described in Figs. 13-14.
  • the source base station may be the main base station to which the UE is currently connected;
  • the candidate base station 1 may be the above-mentioned access network device 2 .
  • the method includes:
  • the source base station sends an RRC reconfiguration message to a UE in a connected state.
  • the source base station may be an access network device to which the above-mentioned UE is currently connected, and the connected UE may be the above-mentioned UE, and the RRC reconfiguration message may include parameters such as measurement object, report configuration, and measurement identifier.
  • the UE sends a measurement report to the source base station.
  • step 1702 is as follows: after the UE measures a series of cells according to the RRC reconfiguration message, and reports the formed measurement report to the source base station currently connected, for example, the signal strength of the current serving cell is lower than the threshold and the target The cell signal is higher than the threshold.
  • the source base station sends a CHO request message to candidate base station 1.
  • the CHO request (CHO request) message is used to initiate the handover process.
  • the CHO request may carry some necessary information for candidate base stations (such as candidate base station 1) to prepare for handover.
  • Candidate base station 1 sends a CHO request confirmation message to the source base station.
  • the CHO request acknowledgment message (CHO request ACK) is used to notify the source base station that candidate base station 1 is ready to switch configuration information.
  • the source base station only needs to directly forward the RRC reconfiguration message in the CHO request acknowledgment message to the UE.
  • the CHO request acknowledgment message may contain information that the UE is ready for handover.
  • the source base station sends a CHO request message to the candidate base station 2.
  • the candidate base station 2 sends a CHO request confirmation message to the source base station.
  • Figure 17 shows the operation of the source base station sending a CHO request message to candidate base station 1 and candidate base station 2, the operation of candidate base station 1 sending a CHO request confirmation message to the source base station, and the operation of candidate base station 2 sending a CHO request confirmation message to the source base station .
  • the source base station can send a CHO request message to one or more candidate base stations, and each candidate base station can feed back a CHO request confirmation message after receiving the CHO request message, and this application does not limit the source base station to send a CHO request message to multiple candidate base stations .
  • the source base station sends CHO configuration information and CPAC configuration information to the UE.
  • the source base station may send one message to carry the CHO configuration information and the CPAC configuration information, or may send multiple messages to carry the CHO configuration information and the CPAC configuration information.
  • the source base station sends a message to the UE to carry CHO configuration information, and sends another message to carry CPAC configuration information.
  • the CHO configuration information may include a CHO trigger condition and information of one or more candidate cells (eg, CGI of the candidate cell, or PCI of the candidate cell and frequency information corresponding to the candidate cell).
  • the CPAC configuration information may be sent to the source base station by any candidate base station, or may be sent to the source base station by a candidate base station corresponding to a candidate PSCell, or in other ways, which are not limited in this embodiment of the present application.
  • the source base station when the source base station delivers the CHO configuration information to the UE, it may deliver the configuration information and trigger conditions (that is, the CPAC configuration information) of at least one candidate PSCell(s) that forms a DC with a cell in at least one candidate PCell ).
  • the configuration information and trigger conditions that is, the CPAC configuration information
  • the UE judges whether the CHO trigger condition is satisfied, and determines the target cell.
  • the target cell is the primary cell that satisfies the CHO triggering condition.
  • the UE is to be handed over to the target cell (the cell of candidate base station 1).
  • the UE may measure whether the cell quality of the candidate cell satisfies the CHO triggering condition according to the CHO configuration information, and use a candidate cell satisfying the CHO triggering condition as a target cell.
  • the UE initiates random access to candidate base station 1.
  • the UE sends a CHO completion message to candidate base station 1.
  • the CHO complete (CHO complete) message is used to notify the candidate base station 1 that the CHO is completed. After the random access is successfully completed, the UE may send a CHO complete message to the candidate base station 1 .
  • the UE sends indication information 2 to candidate base station 1 when CPAC is not triggered.
  • the indication information 2 is used to determine the reason why the UE does not trigger CPAC.
  • the UE If a PCcell triggers the CHO, the UE tries to access the target PCell (ie, the target cell). If the PSCell under the PCell also satisfies the CPAC triggering condition, the UE will also try to change the PSCell (random access between PCell handover and PSCell change can be performed at the same time, or in tandem, without limitation). If none of the PSCells under the PCell meet the CPAC triggering condition (that is, the CPAC is not triggered), the instruction information 2 is sent to the candidate base station 1 .
  • the candidate base station 1 determines the reason why the UE does not trigger CPAC according to the indication information 2.
  • the candidate base station 1 may also be based on the indication information 2 and the configuration of the CPAC.
  • the UE may also send a measurement report to the candidate base station 1 without triggering CPAC.
  • the measurement report is used for the access network device 2 to update the configuration of the CPAC.
  • the UE sends indication information 2 to the access network device 2 when the CPAC is not triggered, so that the access network device 2 can determine the reason why the UE does not trigger the CPAC.
  • the first indication information may enable the access network device 2 to learn more detailed information why CPAC is not triggered.
  • FIG. 18 shows a schematic structural diagram of a communication device 1800 .
  • the communication apparatus 1800 may correspondingly implement the functions or steps implemented by the access network device (for example, the first access network device or the second access network device) in the foregoing method embodiments.
  • the communication device may include a processing module 1810 and a transceiver module 1820 .
  • a storage unit may also be included, and the storage unit may be used to store instructions (code or program) and/or data.
  • the processing module 1810 and the transceiver module 1820 may be coupled to the storage unit, for example, the processing module 1810 may read instructions (codes or programs) and/or data in the storage unit to implement corresponding methods.
  • Each of the above units can be set independently, or can be partially or fully integrated.
  • the transceiving module 1820 may include a sending module and a receiving module.
  • the communication apparatus 1800 can correspondingly implement the behaviors and functions of the access network device 1 in the foregoing method embodiments.
  • the communication apparatus 1800 may be the access network device 1 , or may be a component (such as a chip or a circuit) applied in the access network device 1 .
  • the transceiver module 1820 may be used to execute the implementation performed by the access network device 1 (the MN in FIG. 11 and FIG. 12 ) in the embodiment shown in FIG. 4 , FIG. 7 , FIG. 8 , FIG. 9 , FIG. 10 , FIG. 11 or FIG. 12 All receiving or sending operations, such as steps 401 and 402 in the embodiment shown in FIG. 4 and steps 701, 702, and 703 in the embodiment shown in FIG.
  • the processing module 1810 is configured to execute all the operations performed by the access network device 1 in the embodiment shown in FIG. 4 , FIG. 7 , FIG. 8 , FIG. 9 , FIG. 10 , FIG. 11 or FIG. 12 except the transceiving operation.
  • the communications apparatus 1800 can correspondingly implement the behaviors and functions of the second access network device in the foregoing method embodiments.
  • the communication apparatus 1800 may be the second access network device, or may be a component (such as a chip or a circuit) applied in the second access network device.
  • the transceiver module 1820 may be used to implement the implementation by the second access network device (S-ST in FIG. 11 and FIG. 12) in the embodiment shown in FIG. 4, FIG. 7, FIG. ) all receiving or sending operations performed, such as step 401 in the embodiment shown in FIG. 4 and steps 701 and 702 in the embodiment shown in FIG. 7 , and/or other process.
  • the processing module 1810 is configured to perform all the operations performed by the second access network device in the embodiments of FIG. 4 , FIG. 7 , FIG. 8 , FIG. 9 , FIG. 10 , FIG. 11 or FIG. 12 except the transceiving operation.
  • the communication apparatus 1800 can correspondingly implement the behaviors and functions of the terminal device in the foregoing method embodiments.
  • the communication apparatus 1800 may be a terminal device, or may be a component (such as a chip or a circuit) applied in the terminal device.
  • the transceiver module 1820 may be used to perform all receiving or sending operations performed by the terminal device (UE in FIG. 17) in the embodiments shown in FIG. 13, FIG. 14, FIG. 15, FIG. 16, and FIG. 17, as shown in FIG. Step 1302 in the embodiment shown in FIG. 14 and step 1401 in the embodiment shown in FIG. 14 , and/or other processes used to support the techniques described herein.
  • the processing module 1810 is configured to execute all operations performed by the terminal device in the embodiments in FIG. 13 , FIG. 14 , FIG. 15 , FIG. 16 , and FIG. 17 , except the transceiving operation.
  • the communication apparatus 1800 can correspondingly implement the behaviors and functions of the access network device 2 in the foregoing method embodiments.
  • the communication apparatus 1800 may be the access network device 2 , or may be a component (such as a chip or a circuit) applied in the access network device 2 .
  • the transceiver module 1820 can be used to implement the implementation of the access network device 2 (the first access network device in FIG. 13, the candidate base station in FIG. 17) in the embodiments shown in FIG. 13, FIG. 1) All receiving or sending operations performed, such as step 1302 in the embodiment shown in FIG. 13 and step 1401 in the embodiment shown in FIG. 14 , and/or other processes used to support the technology described herein.
  • the processing module 1810 is configured to execute all operations performed by the access network device 2 in the embodiments shown in FIG. 13 , FIG. 14 , FIG. 15 , FIG. 16 , and FIG. 17 except the transceiving operation.
  • FIG. 19 is a schematic structural diagram of another communication device 190 provided in an embodiment of the present application.
  • the communication device in FIG. 19 may be the above-mentioned terminal device.
  • the communication device in FIG. 19 may be the access network device 1 described above.
  • the communication device in FIG. 19 may be the access network device 2 described above.
  • the communication device in FIG. 19 may be the above-mentioned second access network device.
  • the communication device 190 includes at least one processor 1920 and a transceiver 1910 .
  • the processor 1920 and the transceiver 1910 may be used to perform the functions or operations performed by the access network device 1 described above.
  • the processor 1920 may perform one of the following multiple operations: step 1105 in FIG. 11 and step 1207 in FIG. 12 .
  • the transceiver 1910 may perform one or more of the following operations: step 401, step 402 in FIG. 4, step 701, step 702, and step 703 in FIG. 7, step 801, step 802, and step 803 in FIG. 8, Step 901, step 902, step 903, step 904 in Fig. 9, step 1001, step 1002, step 1003 in Fig. 10, step 1101, step 1102, step 1104, step 1106, step 1107, step 1108 in Fig. 11 , step 1109, step 1110, step 1111, step 1112, step 1201, step 1202, step 1204, step 1205, step 1206, step 1208, step 1209, step 1210 in FIG.
  • the processor 1920 and the transceiver 1910 may be configured to perform the functions or operations performed by the foregoing second access network device.
  • the transceiver 1910 may perform one or more operations as follows: step 401 in FIG. 4, step 701 in FIG. 7, step 801 in FIG. 8, step 901 and step 903 in FIG. 9, and step in FIG. 1001, step 1101, step 1108, step 1109, and step 1112 in FIG. 11, step 1201, step 1205, step 1206, and step 1210 in FIG.
  • the processor 1920 and the transceiver 1910 may be configured to perform functions or operations performed by the foregoing terminal device.
  • the processor 1920 may perform one or more of the following operations: step 1301 in FIG. 13 , step 1501 in FIG. 15 , step 1708 and step 1709 in FIG. 17 .
  • the transceiver 1910 may perform one or more of the following operations: step 1302 in FIG. 13 , step 1401 in FIG. 14 , step 1502 in FIG. 15 , step 1601 in FIG. 16 , step 1701 and step 1702 in FIG. 17 , step 1707, step 1710, step 1711.
  • the processor 1920 and the transceiver 1910 may be used to perform the functions or operations performed by the access network device 2 described above.
  • the processor 1920 may execute step 1301 in FIG. 13 , step 1402 in FIG. 14 , step 1501 in FIG. 15 , step 1602 in FIG. 16 , step 1709 and step 1712 in FIG. 17 .
  • the transceiver 1910 may perform one or more of the following operations: step 1302 in FIG. 13 , step 1401 in FIG. 14 , step 1502 in FIG. 15 , step 1601 in FIG. 16 , step 1703 and step 1704 in FIG. 17 , step 1710, step 1711.
  • Transceiver 1910 is used to communicate with other devices/devices over transmission media.
  • the processor 1920 uses the transceiver 1910 to send and receive data and/or signaling, and is used to implement the methods in the foregoing method embodiments.
  • the processor 1920 can implement the function of the processing module 1810
  • the transceiver 1910 can implement the function of the transceiver module 1820 .
  • the communication device 190 may further include at least one memory 1930 for storing program instructions and/or data.
  • the memory 1930 is coupled to the processor 1920 .
  • the coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • Processor 1920 may cooperate with memory 1930 .
  • Processor 1920 may execute program instructions stored in memory 1930 . At least one of the at least one memory may be included in the processor.
  • the specific connection medium among the transceiver 1910, the processor 1920, and the memory 1930 is not limited.
  • the memory 1930, the processor 1920, and the transceiver 1910 are connected through a bus 1940.
  • the bus is represented by a thick line in FIG. 19, and the connection between other components is only for schematic illustration. , is not limited.
  • the bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in Fig. 19, but it does not mean that there is only one bus or one type of bus.
  • the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or Execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application.
  • a general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.
  • FIG. 20 is a schematic structural diagram of another communication device 200 provided in an embodiment of the present application.
  • the communication device shown in FIG. 20 includes a logic circuit 2001 and an interface 2002 .
  • the processing module 1810 in FIG. 18 can be realized by a logic circuit 2001
  • the transceiver module 1820 in FIG. 18 can be realized by an interface 2002 .
  • the logic circuit 2001 may be a chip, a processing circuit, an integrated circuit or a system on chip (SoC) chip, etc.
  • the interface 2002 may be a communication interface, an input-output interface, or the like.
  • the logic circuit and the interface may also be coupled to each other.
  • the embodiment of the present application does not limit the specific connection manner of the logic circuit and the interface.
  • the logic circuit and the interface may be used to perform the functions or operations performed by the access network device 1 described above.
  • the logic circuit and the interface may be used to perform the functions or operations performed by the above-mentioned second access network device.
  • the logic circuit and the interface may be used to perform the functions or operations performed by the terminal device described above.
  • the logic circuit and interface may be used to perform the functions or operations performed by the access network device 2 described above.
  • the present application also provides a computer-readable storage medium, where computer codes are stored in the computer-readable storage medium, and when the computer codes are run on the computer, the computer is made to execute the methods of the above-mentioned embodiments.
  • the present application also provides a computer program product.
  • the computer program product includes computer code or computer program.
  • the authentication method in the above-mentioned embodiments is executed.
  • the present application also provides a communication system, including a terminal device, an access network device 1, a second access network device, and a third access network device.
  • the present application also provides a communication system, including a terminal device and an access network device 2 .

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Abstract

本申请实施例公开了一种通信方法和通信装置，该通信装置包括：第一接入网设备接收来自第二接入网设备的第一指示信息；第一指示信息指示第一接入网设备在向第二接入网设备发送第一候选主辅小区信息之后或之前，发送第一重配置消息；第一候选主辅小区信息指示第二接入网设备请求第三接入网设备添加的候选主辅小区中，被第三接入网设备接受的一个或多个第一候选主辅小区；第一接入网设备根据第一指示信息，向终端设备发送第一重配置消息；解决了该第二接入网设备不知道在发送第一候选主辅小区信息之前发送第一重配置消息，还是在发送第一候选主辅小区信息之后发送第一重配置消息的问题，能够使得CPC流程的正常执行。

Description

通信方法和通信装置
本申请要求于2021年10月22日提交中国专利局、申请号为202111235026.0、申请名称为“通信方法和通信装置”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
本申请涉及通信领域，尤其涉及一种通信方法和通信装置。
背景技术
在无线网络中，一个用户设备(user equipment，UE)可能和多个基站通信，即双连接(dual-connectivity，DC)，也称为多模双连接(multi-radio dual connectivity，MR-DC)。网络侧可以利用多个基站的资源为同一UE提供通信服务，从而为UE提供高速率传输。在MR-DC场景中，与核心网有控制面信令交互的基站称为主基站(master mode，MN)，其他基站称为辅基站(secondary node，SN)。MR-DC场景中，主基站中存在一个主小区(primary cell，Pcell)，辅基站中存在一个主辅小区(primary secondary cell，PSCell)。
在MR-DC场景中，由于UE的移动性，网络侧会触发PSCell的改变(即网络侧指示UE，从一个PSCell切换到另外一个PSCell)。例如，UE可以通过执行条件主辅小区的改变(conational PSCell change，CPC)流程完成PSCell的改变。但是，在MR-DC场景中，一些CPC流程存在无法正常执行的问题。
发明内容
本申请实施例公开了一种通信方法和通信装置，能够使得CPC流程正常执行。
第一方面，本申请实施例提供了一种通信方法，该方法包括：第一接入网设备接收来自第二接入网设备的第一指示信息；所述第一指示信息指示所述第一接入网设备在向所述第二接入网设备发送第一候选主辅小区信息之后或之前，发送第一重配置消息；所述第一候选主辅小区信息指示所述第二接入网设备请求第三接入网设备添加的候选主辅小区中，被所述第三接入网设备接受的一个或多个第一候选主辅小区；所述第一接入网设备根据所述第一指示信息，向终端设备发送所述第一重配置消息；所述第一重配置消息包含所述一个或多个第一候选主辅小区对应的配置信息。
本申请实施例中，第一指示信息指示第一接入网设备在向第二接入网设备发送第一候选主辅小区信息之后或之前，发送第一重配置消息。第一接入网设备根据第一指示信息，向终端设备发送第一重配置消息；解决了该第一接入网设备不知道在发送第一候选主辅小区信息之前发送第一重配置消息，还是在发送第一候选主辅小区信息之后发送第一重配置消息的问题，能够使得CPC流程的正常执行。
第二方面，本申请实施例提供了另一种通信方法，该方法包括：第二接入网设备向第一接入网设备发送第一指示信息；所述第一指示信息指示所述第一接入网设备在向所述第二接入网设备发送第一候选主辅小区信息之后或之前，发送第一重配置消息；所述第一候选主辅 小区信息指示所述第二接入网设备请求第三接入网设备添加的候选主辅小区中，被所述第三接入网设备接受的一个或多个第一候选主辅小区；所述第二接入网设备接收来自所述第一接入网设备的所述第一候选主辅小区信息。
本申请实施例中，第二接入网设备向第一接入网设备发送第一指示信息，该第一指示信息指示第一接入网设备在向第二接入网设备发送第一候选主辅小区信息之后或之前，发送第一重配置消息；解决了该第一接入网设备不知道在发送第一候选主辅小区信息之前发送第一重配置消息，还是在发送第一候选主辅小区信息之后发送第一重配置消息的问题，能够使得CPC流程的正常执行。
在第一方面或者第二方面的一种可能的实现方式中，所述第一指示信息包含指示字段，
所述指示字段指示所述第一接入网设备在向所述第二接入网设备发送所述第一候选主辅小区信息之后，发送所述第一重配置消息；以及，所述指示字段还指示所述第一接入网设备在向所述第二接入网设备发送第二候选主辅小区信息之后，发送第二重配置消息；所述第二候选主辅小区信息指示所述第二接入网设备请求第四接入网设备添加的候选主辅小区中，被所述第四接入网设备接受的一个或多个第二候选主辅小区；所述第二重配置消息包含所述一个或多个第二候选主辅小区对应的配置信息；或者，所述指示字段指示所述第一接入网设备在向所述第二接入网设备发送所述第一候选主辅小区信息之前，发送所述第一重配置消息；以及，所述指示字段还指示所述第一接入网设备在向所述第二接入网设备发送第二候选主辅小区信息之前，发送第二重配置消息；所述第二候选主辅小区信息指示所述第二接入网设备请求第四接入网设备添加的候选主辅小区中，被所述第四接入网设备接受的一个或多个第二候选主辅小区；所述第二重配置消息包含所述一个或多个第二候选主辅小区对应的配置信息。
在该实现方式中，指示字段既能指示第一接入网设备在向第二接入网设备发送第一候选主辅小区信息之后，发送第一重配置消息；又能指示第一接入网设备在向第二接入网设备发送第二候选主辅小区信息之后，发送第二重配置消息。或者，指示字段既能指示第一接入网设备在向第二接入网设备发送第一候选主辅小区信息之前，发送第一重配置消息；又能指示第一接入网设备在向第二接入网设备发送第二候选主辅小区信息之前，发送第二重配置消息；信令开销减少。
在第一方面或者第二方面的一种可能的实现方式中，所述第一指示信息包含所述第三接入网设备的标识和/或所述一个或多个第一候选主辅小区的标识。
在该实现方式中，第一指示信息包含第三接入网设备的标识和/或一个或多个第一候选主辅小区的标识，以便指示第一接入网设备发送第一重配置消息和第一候选主辅小区信息的先后顺序。
在第一方面或者第二方面的一种可能的实现方式中，所述第一指示信息包含所述第三接入网设备的标识和/或所述一个或多个第一候选主辅小区的标识，以及，所述第一指示信息包含所述第四接入网设备的标识和/或所述一个或多个第二候选主辅小区的标识。
在该实现方式中，第一指示信息还包含第四接入网设备的标识和/或一个或多个第二候选主辅小区的标识。这样第一指示信息既能指示第一接入网设备发送第一重配置消息和第一候选主辅小区信息的先后顺序，又能指示第一接入网设备发送第二重配置消息和第二候选主辅小区信息的先后顺序，信令开销少。
在第一方面或者第二方面的一种可能的实现方式中，所述第一指示信息包括第一字段以及第二字段，所述第一字段对应于所述第三接入网设备的标识和/或所述一个或多个第一候选主辅小区的标识，所述第二字段对应于第四接入网设备的标识和/或一个或多个第二候选主辅 小区的标识；所述第一字段指示所述第一接入网设备在向所述第二接入网设备发送所述第一候选主辅小区信息之前或之后，发送所述第一重配置消息；所述第二字段指示所述第一接入网设备在向所述第二接入网设备发送第二候选主辅小区信息之前或之后，发送所述第二重配置消息；其中，所述第二候选主辅小区信息指示所述一个或多个第二候选主辅小区，所述一个或多个第二候选主辅小区为所述第二接入网设备请求所述第四接入网设备添加的候选主辅小区中，被所述第四接入网设备接受的一个或多个候选主辅小区；所述第二重配置消息包含所述一个或多个第二候选主辅小区对应的配置信息。
在该实现方式中，第一指示信息独立地指示第一接入网设备发送第一重配置消息和第一候选主辅小区信息的先后顺序，以及该第一接入网设备发送第二重配置消息和第二候选主辅小区信息的先后顺序；可根据实际需求灵活配置第一接入网设备发送第一重配置消息和第一候选主辅小区信息的先后顺序，以及该第一接入网设备发送第二重配置消息和第二候选主辅小区信息的先后顺序，信令开销少。
在第一方面或者第二方面的一种可能的实现方式中，所述第一指示信息还包括所述第三接入网设备的标识和/或所述一个或多个第一候选主辅小区的标识，以及所述第四接入网设备的标识和/或所述一个或多个第二候选主辅小区的标识。
在该实现方式中，所述第一指示信息还包括第三接入网设备的标识和/或一个或多个第一候选主辅小区的标识，以及第四接入网设备的标识和/或一个或多个第二候选主辅小区的标识；以便准确、快速地确定第一字段对应的一个或多个第一候选主辅小区的标识，以及第二字段对应的一个或多个第二候选主辅小区的标识。
在第一方面或者第二方面的一种可能的实现方式中，所述第一指示信息包含所述第三接入网设备的标识。
在该实现方式中，第一指示信息包含第三接入网设备的标识，以便指示第一接入网设备发送该第三接入网设备对应于的第一候选主辅小区信息和第一重配置消息的先后顺序。
在第一方面或者第二方面的一种可能的实现方式中，所述第三接入网设备为所述终端设备的候选辅基站，所述第一指示信息未包含所述终端设备的其他候选辅基站的标识。
在该实现方式中，第一指示信息仅包含一个终端设备的候选辅基站(即第三接入网设备)的标识，以便指示第一接入网设备发送该第三接入网设备对应于的第一候选主辅小区信息和第一重配置消息的先后顺序，占用比特少。
在第一方面或者第二方面的一种可能的实现方式中，所述第一指示信息包含第三字段，所述第三字段对应于所述一个或多个第一候选主辅小区的标识，以及，第四字段，所述第四字段对应于一个或多个第三候选主辅小区的标识，所述第三字段指示所述第一接入网设备在向所述第二接入网设备发送所述第一候选主辅小区信息之后，发送所述第一重配置消息；所述第四字段指示所述第一接入网设备在向所述第二接入网设备发送所述一个或多个第三候选主辅小区对应的第三候选主辅小区信息之前，发送所述一个或多个第三候选主辅小区对应的第三重配置消息；所述一个或多个第三候选主辅小区属于一个或多个接入网设备。所述一个或多个接入网设备包括所述第三接入网设备和/或其他接入网设备。
可选地，所述第一指示信息还包括所述一个或多个第一候选主辅小区的标识，以及，所述一个或多个第三候选主辅小区的标识。
在该实现方式中，第三字段指示第一接入网设备在向第二接入网设备发送第一候选主辅小区信息之后，发送所述第一重配置消息；第四字段指示第一接入网设备在向第二接入网设备发送一个或多个第三候选主辅小区对应的第三候选主辅小区信息之前，发送一个或多个第 三候选主辅小区对应的第三重配置消息。可见，第一指示信息可独立地指示第一接入网设备发送任意一个候选主辅小区对应的候选主辅小区信息和重配置消息的先后顺序，并且信令开销少。
在第一方面或者第二方面的一种可能的实现方式中，所述第三字段还对应于一个或多个第四候选主辅小区的标识，所述第三字段还指示所述第一接入网设备在向所述第二接入网设备发送所述一个或多个第四候选主辅小区对应的第四候选主辅小区信息之后，发送所述一个或多个第四候选主辅小区对应的第四重配置消息；所述一个或多个第四候选主辅小区属于一个或多个接入网设备。可选地，所述一个或多个第四候选主辅小区属于所述第三接入网设备以外的其他接入网设备。
在该实现方式中，第三字段还指示第一接入网设备在向第二接入网设备发送一个或多个第四候选主辅小区对应的第四候选主辅小区信息之后，发送一个或多个第四候选主辅小区对应的第四重配置消息。可见，第三字段可指示第一接入网设备发送属于不同接入网设备的多个候选主辅小区对应的候选主辅小区信息与重配置消息的先后顺序。第四字段可指示第一接入网设备发送属于不同接入网设备的多个候选主辅小区对应的候选主辅小区信息与重配置消息的先后顺序。也就是说，第一指示信息中的第三字段和第四字段均能第一接入网设备发送属于不同接入网设备的多个候选主辅小区对应的候选主辅小区信息与重配置消息的先后顺序，占用比特位少。
在第一方面或者第二方面的一种可能的实现方式中，所述第一指示信息包含第三字段，所述第三字段对应于所述一个或多个第一候选主辅小区的标识，以及，第四字段，所述第四字段对应于一个或多个第三候选主辅小区的标识；所述第三字段指示所述第一接入网设备在向所述第二接入网设备发送所述第一候选主辅小区信息之前，发送所述第一重配置消息；所述第四字段指示所述第一接入网设备在向所述第二接入网设备发送所述一个或多个第三候选主辅小区对应的第三候选主辅小区信息之后，发送所述一个或多个第三候选主辅小区对应的第三重配置消息；所述一个或多个第三候选主辅小区对应于一个或多个接入网设备。
可选地，所述第一指示信息还包括所述一个或多个第一候选主辅小区的标识，以及，所述一个或多个第三候选主辅小区的标识。
在该实现方式中，第三字段指示第一接入网设备在向第二接入网设备发送第一候选主辅小区信息之前，发送所述第一重配置消息；第四字段指示第一接入网设备在向第二接入网设备发送一个或多个第三候选主辅小区对应的第三候选主辅小区信息之后，发送一个或多个第三候选主辅小区对应的第三重配置消息。可见，第一指示信息可独立地指示第一接入网设备发送任意一个候选主辅小区对应的候选主辅小区信息和重配置消息的先后顺序，并且信令开销少。
在第一方面或者第二方面的一种可能的实现方式中，所述第三字段还对应于一个或多个第四候选主辅小区的标识，所述第三字段还指示所述第一接入网设备在向所述第二接入网设备发送所述一个或多个第四候选主辅小区对应的第四候选主辅小区信息之前，发送所述一个或多个第四候选主辅小区对应的第四重配置消息；所述一个或多个第四候选主辅小区属于一个或多个接入网设备。
在该实现方式中，第一指示信息中的第三字段和第四字段均能第一接入网设备发送属于不同接入网设备的多个候选主辅小区对应的候选主辅小区信息与重配置消息的先后顺序，占用比特位少。
在第一方面或者第二方面的一种可能的实现方式中，所述第一候选主辅小区信息指示所 述第二接入网设备请求第三接入网设备添加的候选主辅小区中，被所述第三接入网设备接受的一个所述第一候选主辅小区；所述第一重配置消息包含所述一个第一候选主辅小区对应的配置信息；所述第一指示信息包含第五字段、与所述第五字段对应的所述一个第一候选主辅小区的标识，所述第五字段指示所述第一接入网设备在向所述第二接入网设备发送所述第一候选主辅小区信息之前或之后，发送所述第一重配置消息。
在该实现方式中，第五字段指示第一接入网设备在向第二接入网设备发送第一候选主辅小区信息之前或之后，发送第一重配置消息，灵活性高。
在第一方面或者第二方面的一种可能的实现方式中，所述第一指示信息还包含第六字段、所述第六字段对应于一个第六候选主辅小区的标识，所述第六字段指示所述第一接入网设备在向所述第二接入网设备发送第六候选主辅小区信息之前或之后，发送第六重配置消息，其中，所述第六候选主辅小区信息指示所述第二接入网设备请求所述第六接入网设备添加的候选主辅小区中，被所述第六接入网设备接受的一个候选主辅小区，所述第六重配置消息包含所述第六候选主辅小区的配置信息。
在该实现方式中，第一指示信息可独立地指示第一接入网设备向第二接入网设备发送每个候选主辅小区对应的重配置消息和候选主辅小区信息的先后顺序，灵活性高、信令开销少。
在第一方面或者第二方面的一种可能的实现方式中，所述第一指示信息还包含所述第三接入网设备的标识，所述一个或多个第一主辅候选小区的标识与所述第三接入网设备的标识相对应。
在该实现方式中，第一指示信息还包含第三接入网设备的标识，并且一个或多个第一候选主辅小区的标识与第三接入网设备的标识相对应，这样第一接入网设备结合第三接入网设备的标识和一个或多个第一候选主辅小区的标识可确定一个或多个第一候选主辅小区，一个或多个第一候选主辅小区的标识可占用较少的比特位。
在第一方面或者第二方面的一种可能的实现方式中，所述第一指示信息包含于辅基站切换请求消息。
在该实现方式中，第一指示信息包含于辅基站切换请求消息，不必额外通过其他信令来携带第一指示信息，信令开销少。
在第一方面的一种可能的实现方式中，所述方法还包括：所述第一接入网设备在未接收到来自所述第二接入网设备的第二指示信息的情况下，根据接收到的所述第一指示信息，向所述终端设备发送第五重配置消息；所述第二指示信息指示所述第一接入网设备在向所述第二接入网设备发送第五候选主辅小区信息之后或之前，发送第五重配置消息；所述第五候选主辅小区信息指示所述第二接入网设备请求第五接入网设备添加的候选主辅小区中，被所述第五接入网设备接受的一个或多个第五候选主辅小区；所述第五重配置消息包括所述一个或多个第五候选主辅小区对应的配置信息。
在该实现方式中，第一接入网设备在未接收到来自第二接入网设备的第二指示信息的情况下，根据接收到的第一指示信息，向终端设备发送第五重配置消息。也就是说，如果第一接入网设备没有收到新的指示信息(第二指示信息)，可以根据接收到的第一指示信息，向终端设备发送第五重配置消息；既能减小指示信息的发送次数，又能指示快速地确定发送第五重配置信息和第五候选主辅小区信息的先后顺序。
在第一方面或者第二方面的一种可能的实现方式中，所述第一接入网设备为所述终端设备的主基站；所述第二接入网设备为所述终端设备源辅基站，所述第三接入网设备为所述终端设备的候选辅基站。
第三方面，本申请实施例提供了另一种通信方法，该方法包括：终端设备接入第一接入网设备的目标主小区；所述终端设备在未触发条件主辅小区的增加和改变(Conational PSCell Addition and Change，CPAC的情况下，向所述第一接入网设备发送第一指示信息，所述第一指示信息用于确定所述终端设备未触发CPAC的原因。
本申请实施例中，终端设备在未触发CPAC的情况下，向第一接入网设备发送第一指示信息，以便于第一接入网设备确定终端设备未触发CPAC的原因。第一指示信息可使得第一接入网设备获知为何CPAC没有触发的更加详细的信息。
在一种可能的实现方式中，所述方法还包括：所述终端设备向所述第一接入网设备发送测量报告；所述测量报告用于所述第一接入网设备更新CPAC的配置。
在该实现方式中，终端设备向第一接入网设备发送测量报告，以便第一接入网设备根据该测量报告更新CPAC的配置。
在一种可能的实现方式中，所述测量报告与所述目标主小区对应的各候选主辅小区相关。例如，所述测量报告为所述目标主小区对应的各候选主辅小区相关的测量报告。
在该实现方式中，测量报告与目标主小区对应的各候选主辅小区相关，以便第一接入网设备根据测量报告得知与目标主小区对应的各候选主辅小区的情况。
在一种可能的实现方式中，所述测量报告包含与所述目标主小区对应的各候选主辅小区的目标参数；所述目标参数包括以下一项或多项：参考信号接收功率(reference signal received powe，RSRP)、参考信号接收质量(reference signal received quality，RSRQ)、信号干扰噪声比(signal to interference plus noise ratio，SINR)。
在该实现方式中，测量报告包含与目标主小区对应的各候选主辅小区的目标参数，以便第一接入网设备根据该目标参数去优化CPAC的配置。
在一种可能的实现方式中，所述目标参数为所述终端设备在判断是否满足CPAC触发条件时，测量得到。
在该实现方式中，目标参数为终端设备在判断是否满足CPAC触发条件时，测量得到；以便第一接入网设备根据该目标参数确定未触发CPAC的原因。
第四方面，本申请实施例提供了另一种通信方法，该方法包括：第一接入网设备接收来自终端设备的第一指示信息；所述第一接入网设备根据所述第一指示信息，确定所述终端设备未触发CPAC的原因。
本申请实施例中，第一接入网设备根据第一指示信息，确定终端设备未触发CPAC的原因，进而优化CPAC的配置。第一指示信息可使得第一接入网设备获知为何CPAC没有触发的更加详细的信息。
在一种可能的实现方式中，所述方法还包括：所述第一接入网设备接收来自所述终端设备的测量报告；所述测量报告用于所述第一接入网设备更新CPAC的配置。
在该实现方式中，第一接入网设备根据该测量报告更新CPAC的配置。
在一种可能的实现方式中，所述测量报告与所述目标主小区对应的各候选主辅小区相关。例如，所述测量报告为所述目标主小区对应的各候选主辅小区相关的测量报告。
在该实现方式中，测量报告与目标主小区对应的各候选主辅小区相关，以便第一接入网设备根据测量报告得知与目标主小区对应的各候选主辅小区的情况。
在一种可能的实现方式中，所述测量报告包含与所述目标主小区对应的各候选主辅小区的目标参数；RSRP、RSRQ、SINR。
在该实现方式中，测量报告包含与目标主小区对应的各候选主辅小区的目标参数，以便 第一接入网设备根据该目标参数去优化CPAC的配置。
在一种可能的实现方式中，所述目标参数为所述终端设备在判断是否满足CPAC触发条件时，测量得到。
在该实现方式中，目标参数为终端设备在判断是否满足CPAC触发条件时，测量得到；以便第一接入网设备根据该目标参数确定未触发CPAC的原因。
在第三方面或者第四方面的一种可能的实现方式中，所述第一指示信息指示所述终端设备已测量全部与所述目标主小区对应的候选主辅小区，且与所述目标主小区对应的候选主辅小区均未满足CPAC触发条件。
在该实现方式中，第一指示信息可使得第一接入网设备得知，终端设备未触发CPAC的原因在于，终端设备已测量全部与目标主小区对应的候选主辅小区，但是与该目标主小区对应的候选主辅小区均未满足CPAC触发条件。
在第三方面或者第四方面的一种可能的实现方式中，所述第一指示信息指示所述终端设备未测量到与所述目标主小区对应的候选主辅小区。
在该实现方式中，第一指示信息可使得第一接入网设备得知，终端设备未触发CPAC的原因在于，终端设备未测量到与目标主小区对应的候选主辅小区。
在第三方面或者第四方面的一种可能的实现方式中，所述第一指示信息指示所述终端设备已测量部分与所述目标主小区对应的候选主辅小区，且已被所述终端设备测量的候选主辅小区均未满足CPAC触发条件。
在该实现方式中，第一指示信息可使得第一接入网设备得知，终端设备未触发CPAC的原因在于，终端设备已测量部分与目标主小区对应的候选主辅小区，但是已被该终端设备测量的候选主辅小区均未满足CPAC触发条件。
在第三方面或者第四方面的一种可能的实现方式中，所述第一指示信息指示所述目标主小区对应的各候选主辅小区的测量情况以及已被所述终端设备测量的各候选主辅小区均未满足CPAC触发条件。
在该实现方式中，第一指示信息可使得第一接入网设备得知，目标主小区对应的各候选主辅小区的测量情况。
在第三方面或者第四方面的一种可能的实现方式中，所述第一指示信息指示与所述目标主小区对应的候选主辅小区中已被所述终端设备测量的候选主辅小区，且已被所述终端设备测量的候选主辅小区均未满足CPAC触发条件。
在该实现方式中，第一指示信息可使得第一接入网设备得知，与目标主小区对应的候选主辅小区中已被终端设备测量的候选主辅小区，且已被该终端设备测量的候选主辅小区均未满足CPAC触发条件。
第五方面，本申请实施例提供了另一种通信方法，该方法包括：终端设备接入第一接入网设备的目标主小区；所述终端设备在未触发条件主辅小区的增加和改变CPAC的情况下，向所述第一接入网设备发送测量报告；所述测量报告用于所述第一接入网设备更新CPAC的配置。
本申请实施例中，终端设备在未触发CPAC的情况下，向第一接入网设备发送测量报告，以便第一接入网设备根据该测量报告，更新CPAC的配置。
在一种可能的实现方式中，所述第一指示信息为所述终端设备在未触发CPAC的情况下，向所述第一接入网设备发送的。
在一种可能的实现方式中，所述测量报告与所述目标主小区对应的各候选主辅小区相关。
在一种可能的实现方式中，所述测量报告包含与所述目标主小区对应的各候选主辅小区 的目标参数；所述目标参数包括以下一项或多项：RSRP、RSRQ、SINR。
在一种可能的实现方式中，所述目标参数为所述终端设备在判断是否满足CPAC触发条件时，测量得到。
第六方面，本申请实施例提供了另一种通信方法，该方法包括：第一接入网设备接收来自终端设备的测量报告；根据所述测量报告，更新CPAC的配置。
在本申请实施例中，第一接入网设备根据测量报告，更新CPAC的配置。通过更新CPAC的配置，以便更好地实现终端设备的主辅小区切换，提高终端设备的通信质量。
在一种可能的实现方式中，所述测量报告包含与所述终端设备接入的目标主小区对应的各候选主辅小区的目标参数；所述目标参数包括以下一项或多项：RSRP、RSRQ、SINR。
在一种可能的实现方式中，所述目标参数为所述终端设备在判断是否满足CPAC触发条件时，测量得到。
在一种可能的实现方式中，所述根据所述测量报告，更新CPAC的配置包括：根据所述测量报告，更新所述目标主小区对应的各候选主辅小区或者CPAC的触发阈值。
在该实现方式中，根据测量报告，更新目标主小区对应的各候选主辅小区或者CPAC的触发阈值；以便终端设备接入能够为其提供更好通信服务的主辅小区。
第七方面，本申请实施例提供一种通信装置，该通信装置具有实现上述第一方面方法实施例中的行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块或单元。在一种可能的实现方式中，包括收发模块和处理模块，其中：所述收发模块，用于接收来自第二接入网设备的第一指示信息；所述第一指示信息指示第一接入网设备在向所述第二接入网设备发送第一候选主辅小区信息之后或之前，发送第一重配置消息；所述第一候选主辅小区信息指示所述第二接入网设备请求第三接入网设备添加的候选主辅小区中，被所述第三接入网设备接受的一个或多个第一候选主辅小区；所述处理模块，用于根据所述第一指示信息，控制所述收发模块向终端设备发送所述第一重配置消息；所述第一重配置消息包含所述一个或多个第一候选主辅小区对应的配置信息。
在一种可能的实现方式中，所述处理模块，还用于在未接收到来自所述第二接入网设备的第二指示信息的情况下，根据接收到的所述第一指示信息，控制所述收发模块向所述终端设备发送第五重配置消息；所述第二指示信息指示所述第一接入网设备在向所述第二接入网设备发送第五候选主辅小区信息之后或之前，发送第五重配置消息；所述第五候选主辅小区信息指示所述第二接入网设备请求第五接入网设备添加的候选主辅小区中，被所述第五接入网设备接受的一个或多个第五候选主辅小区；所述第五重配置消息包括所述一个或多个第五候选主辅小区对应的配置信息。
第八方面，本申请实施例提供一种通信装置，该通信装置具有实现上述第二方面方法实施例中的行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块或单元。在一种可能的实现方式中，包括收发模块，其中：所述收发模块，用于向第一接入网设备发送第一指示信息；所述第一指示信息指示所述第一接入网设备在向第二接入网设备发送第一候选主辅小区信息之后或之前，发送第一重配置消息；所述第一候选主辅小区信息指示所述第二接入网设备请求第三接入网设备添加的候选主辅小区中，被所述第三接入网设备接受的一个或多个第一候选主辅小区；所述收发模块，还用于接收来自所述第一接入网设备的所述第一候选主辅小区信息。
关于第七方面或第八方面的各种可能的实施方式所带来的技术效果，可参考对于第一方 面或第一方面的各种可能的实施方式的技术效果的介绍。
第九方面，本申请实施例提供一种通信装置，该通信装置具有实现上述第三方面方法实施例中的行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块或单元。在一种可能的实现方式中，包括处理模块和收发模块，其中：所述处理模块，用于控制终端设备接入第一接入网设备的目标主小区；所述收发模块，还用于在未触发CPAC的情况下，向所述第一接入网设备发送第一指示信息，所述第一指示信息用于确定所述终端设备未触发CPAC的原因。
在一种可能的实现方式中，所述收发模块，还用于向所述第一接入网设备发送测量报告；所述测量报告用于所述第一接入网设备更新CPAC的配置。
第十方面，本申请实施例提供一种通信装置，该通信装置具有实现上述第四方面方法实施例中的行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块或单元。在一种可能的实现方式中，包括收发模块和处理模块，其中：所述收发模块，用于接收来自终端设备的第一指示信息；所述处理模块，用于根据所述第一指示信息，确定所述终端设备未触发CPAC的原因。
在一种可能的实现方式中，所述第一指示信息为所述终端设备在未触发CPAC的情况下，向所述第一接入网设备发送的。
在一种可能的实现方式中，所述收发模块，还用于向接收来自所述终端设备的测量报告；所述测量报告用于所述第一接入网设备更新CPAC的配置。
关于第九方面或第十方面的各种可能的实施方式所带来的技术效果，可参考对于第三方面或第三方面的各种可能的实施方式的技术效果的介绍。
第十一方面，本申请实施例提供一种通信装置，该通信装置具有实现上述第五方面方法实施例中的行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块或单元。在一种可能的实现方式中，包括处理模块和收发模块，其中：所述处理模块，用于控制终端设备接入第一接入网设备的目标主小区；所述收发模块，用于在所述终端设备未触发CPAC的情况下，向所述第一接入网设备发送测量报告；所述测量报告用于所述第一接入网设备更新CPAC的配置。
在一种可能的实现方式中，所述第一指示信息为所述终端设备在未触发CPAC的情况下，向所述第一接入网设备发送的。
关于第十一方面或第十一方面的各种可能的实施方式所带来的技术效果，可参考对于第五方面或第五方面的各种可能的实施方式的技术效果的介绍。
第十二方面，本申请实施例提供一种通信装置，该通信装置具有实现上述第六方面方法实施例中的行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块或单元。在一种可能的实现方式中，包括收发模块和处理模块，其中：所述收发模块，用于接收来自终端设备的测量报告；所述处理模块，用于根据所述测量报告，更新CPAC的配置。
在一种可能的实现方式中，所述处理模块，具体用于根据所述测量报告，更新所述目标主小区对应的各候选主辅小区或者CPAC的触发阈值。
关于第十二方面或第十二方面的各种可能的实施方式所带来的技术效果，可参考对于第六方面或第六方面的各种可能的实施方式的技术效果的介绍。
第十三方面，本申请提供一种通信装置，该通信装置包括处理器，该处理器可以用于执行存储器所存储的计算机执行指令，以使上述第一方面或第一方面的任意可能的实现方式所 示的方法被执行，或者以使上述第二方面或第二方面的任意可能的实现方式所示的方法被执行，或者以使上述第三方面或第三方面的任意可能的实现方式所示的方法被执行，或者以使上述第四方面或第四方面的任意可能的实现方式所示的方法被执行，或者以使上述第五方面或第五方面的任意可能的实现方式所示的方法被执行，或者以使上述第六方面或第六方面的任意可能的实现方式所示的方法被执行。
本申请实施例中，在执行上述方法的过程中，上述方法中有关发送信息的过程，可以理解为基于处理器的指令进行输出信息的过程。在输出信息时，处理器将信息输出给收发器，以便由收发器进行发射。该信息在由处理器输出之后，还可能需要进行其他的处理，然后到达收发器。类似的，处理器接收输入的信息时，收发器接收该信息，并将其输入处理器。更进一步的，在收发器收到该信息之后，该信息可能需要进行其他的处理，然后才输入处理器。
对于处理器所涉及的发送和/或接收等操作，如果没有特殊说明，或者，如果未与其在相关描述中的实际作用或者内在逻辑相抵触，则可以一般性的理解为基于处理器的指令输出。
在实现过程中，上述处理器可以是专门用于执行这些方法的处理器，也可以是执行存储器中的计算机指令来执行这些方法的处理器，例如通用处理器等。例如，处理器还可以用于执行存储器中存储的程序，当该程序被执行时，使得该通信装置执行如上述第一方面或第一方面的任意可能的实现方式所示的方法。在一种可能的实现方式中，存储器位于上述通信装置之外。在一种可能的实现方式中，存储器位于上述通信装置之内。
本申请实施例中，处理器和存储器还可能集成于一个器件中，即处理器和存储器还可能被集成于一起。
在一种可能的实现方式中，通信装置还包括收发器，该收发器，用于接收报文或发送报文等。
第十四方面，本申请提供一种数据处理装置，该数据处理装置包括处理电路和接口电路，该接口电路用于获取数据或输出数据；处理电路用于执行如上述第一方面或第一方面的任意可能的实现方式所示的相应的方法，或者处理电路用于执行如上述第二方面或第二方面的任意可能的实现方式所示的相应的方法，或者处理电路用于执行如上述第三方面或第三方面的任意可能的实现方式所示的相应的方法，或者处理电路用于执行如上述第四方面或第四方面的任意可能的实现方式所示的相应的方法，或者处理电路用于执行如上述第五方面或第五方面的任意可能的实现方式所示的相应的方法，或者处理电路用于执行如上述第六方面或第六方面的任意可能的实现方式所示的相应的方法。
第十五方面，本申请提供一种计算机可读存储介质，该计算机可读存储介质用于存储计算机程序，当其在计算机上运行时，使得上述第一方面或第一方面的任意可能的实现方式所示的方法被执行，或者使得上述第二方面或第二方面的任意可能的实现方式所示的方法被执行，或者使得上述第三方面或第三方面的任意可能的实现方式所示的方法被执行，或者使得上述第四方面或第四方面的任意可能的实现方式所示的方法被执行，或者使得上述第五方面或第五方面的任意可能的实现方式所示的方法被执行，或者使得上述第六方面或第六方面的任意可能的实现方式所示的方法被执行。
第十六方面，本申请提供一种计算机程序产品，该计算机程序产品包括计算机程序或计算机代码，当其在计算机上运行时，使得上述第一方面或第一方面的任意可能的实现方式所示的方法被执行，或者使得上述第二方面或第二方面的任意可能的实现方式所示的方法被执行，或者使得上述第三方面或第三方面的任意可能的实现方式所示的方法被执行，或者使得上述第四方面或第四方面的任意可能的实现方式所示的方法被执行，或者使得上述第五方面 或第五方面的任意可能的实现方式所示的方法被执行，或者使得上述第六方面或第六方面的任意可能的实现方式所示的方法被执行。
第十七方面，本申请提供一种通信系统，包括上述第七方面或第七方面的任意可能的实现方式所述第一接入网设备以及上述第八方面或第八方面的任意可能的实现方式所述第二接入网设备。
附图说明
为了更清楚地说明本申请实施例或背景技术中的技术方案，下面将对本申请实施例或背景技术中所需要使用的附图进行说明。
图1是本申请提供的一种MR-DC场景的架构示意图；
图2为本申请实施例提供的一种基站侧协议栈与网元模块的示例；
图3为本申请实施例提供的一种双连接下各种小区的概念示意图；
图4为本申请实施例提供的一种通信方法流程图；
图5为本申请实施例提供的一种第一指示信息的示例；
图6A为本申请实施例提供的另一种第一指示信息的示例；
图6B为本申请实施例提供的另一种第一指示信息的示例；
图7为本申请实施例提供的另一种通信方法流程图；
图8为本申请实施例提供的另一种通信方法流程图；
图9为本申请实施例提供的另一种通信方法流程图；
图10为本申请实施例提供的另一种通信方法流程图；
图11为本申请实施例提供的另一种通信方法流程图；
图12为本申请实施例提供的另一种通信方法流程图；
图13为本申请实施例提供的另一种通信方法流程图；
图14为本申请实施例提供的另一种通信方法流程图；
图15为本申请实施例提供的另一种通信方法流程图；
图16为本申请实施例提供的另一种通信方法流程图；
图17为本申请实施例提供的另一种通信方法流程图；
图18示出了一种通信装置1800的结构示意图；
图19为本申请实施例提供的另一种通信装置190的结构示意图；
图20为本申请实施例提供的另一种通信装置200的结构示意图。
具体实施方式
本申请的说明书、权利要求书及附图中的术语“第一”和“第二”等仅用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备等，没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元等，或可选地还包括对于这些过程、方法、产品或设备等固有的其它步骤或单元。
在本文中提及的“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员可以显式地和隐 式地理解的是，本文所描述的实施例可以与其它实施例相结合。
本申请以下实施例中所使用的术语只是为了描述特定实施例的目的，而并非旨在作为对本申请的限制。如在本申请的说明书和所附权利要求书中所使用的那样，单数表达形式“一个”、“一种”、“所述”、“上述”、“该”和“这一”旨在也包括复数表达形式，除非其上下文中明确地有相反指示。还应当理解，本申请中使用的术语“和/或”是指并包含一个或多个所列出项目的任何或所有可能组合。例如，“A和/或B”可以表示：只存在A，只存在B以及同时存在A和B三种情况，其中A，B可以是单数或者复数。本申请中使用的术语“多个”是指两个或两个以上。
以下将详细介绍本申请涉及的网络架构。
本申请提供的技术方案可以应用于各种通信系统，例如：长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、第四代(4th generation，4G)通信系统、非陆地通信网络(non-terrestrial network，NTN)系统、第五代(5th generation，5G)通信系统或新无线(new radio，NR)以及未来的其他通信系统，如6G等。下面以5G通信系统中的MR-DC场景为例，介绍本申请提供的技术方案。
参见图1，图1是本申请提供的一种MR-DC场景的架构示意图。如图1所示，该通信系统包括：一个或多个用户设备，图1中仅以1个用户设备为例，以及可为该用户设备提供的通信服务的一个或多个接入网设备(例如基站)，图1中仅以一个接入网设备1(终端设备的主基站)和接入网设备2(终端设备的辅基站)为例。
用户设备((user equipment，UE))是一种具有无线收发功能的设备。用户设备可经无线接入网(radioaccess network，RAN)中的接入网设备(或者称为接入设备)与一个或多个核心网(core network，CN)设备(或者称为核心设备)进行通信。用户设备可以部署在陆地上，包括室内或室外、手持或车载；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)。本申请实施例中，UE也可称为终端设备，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)中的无线终端设备、无人驾驶(self driving)中的无线终端设备、远程医疗(remote medical)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端设备、智慧家庭(smart home)中的无线终端等。可选的，用户设备可以是具有无线通信功能的手持设备、车载设备、可穿戴设备或物联网、车联网中的终端、5G网络以及未来网络中的任意形态的终端等，本申请对此并不限定。接入网设备可以是任意一种具有无线收发功能且能和用户设备通信的设备，例如将用户设备接入到无线网络的无线接入网(radio access network，RAN)节点。目前，一些RAN节点的举例包括：gNB、传输接收点(transmission reception point，TRP)、演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station,BTS)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(base band unit，BBU)、无线保真(wireless fidelity，Wifi)接入点(access point，AP)、接入回传一体化(integrated access and backhaul，IAB)等。本申请中以基站作为 接入网设备的示例进行描述。
图2为本申请实施例提供的一种基站侧协议栈与网元模块的示例。如图2所示，基站可以包括CU和DU，一个CU可以连接一个DU，或者也可以多个DU共用一个CU。CU和DU的切分可以按照协议栈切分，其中一种可能的方式是将无线资源控制(radio resource control，RRC)、业务数据匹配协议(service data adaptation protocol，SDAP)以及分组数据汇聚协议(packet data convergence protocol，PDCP)层部署在CU，其余的无线链路控制(radio link control，RLC)层、媒体接入控制(media access control，MAC)层以及物理层(physical layer，PHY)部署在DU。如图2所示，在一种可能的网络结构中，集中单元CU节点可以划分为控制面(CU-CP)和用户面(CU-UP)。其中CU-CP负责控制面(control plane)功能，主要包含无线资源控制(radio resource control，RRC)和分组数据汇聚协议(packet data convergence protocol，PDCP)-C。PDCP-C主要负责控制面数据的加解密，完整性保护，数据传输等。CU-UP负责用户面(user plane)功能，主要包含服务数据适配协议(service data adaptation protocol，SDAP)和PDCP-U。其中SDAP主要负责将核心网的数据进行处理并将流(flow)映射到承载。PDCP-U主要负责数据面的加解密，完整性保护，头压缩，序列号维护，数据传输等。其中CU-CP和CU-UP通过E1接口连接。CU-CP代表CU通过Ng接口和核心网连接。CU-CP通过F1-C(控制面)和DU连接。CU-UP通过F1-U(用户面)和DU连接。当然还有一种可能的实现是PDCP-C也在CU-UP。
为更清楚的描述本申请实施例提供的技术方案，下面先介绍一些本申请实施例涉及一些技术特征。
MR-DC：
MR-DC包括各种形式，例如演进的通用陆面无线接入与新空口双连接(E-UTRA NR dual connectivity，EN-DC)，下一代无线接入技术与演进的通用陆面无线接入双连接(next generation-RAN E-UTRA dual connectivity，NGEN-DC)，新空口与演进的通用陆面无线接入双连接(NR E-UTRA dual connectivity，NE-DC)，新空口双连接(NR dual connectivity，NR-DC)等。其中，EN-DC中，主基站为连接到第四代移动通信技术(the 4th generation，4G)分组核心网(evolved packet core，EPC)的长期演进(long term evolution，LTE)基站，辅基站为NR基站。NGEN-DC中，主基站为连接到第五代移动通信技术(the 5th generation，5G)的第五代核心网(5generation core，5GC)的LTE基站ng-eNB，辅基站为NR基站。NE-DC中，主基站为连接到5GC的NR基站，辅基站为LTE基站。NR-DC中，主基站为连接到5GC的NR基站，辅基站为NR基站。
对于一个处于MR-DC的UE而言，SN可能与MN所连接的核心网有用户面连接，即，下行方向，MN所连接的核心网可以直接通过辅基站向UE发送数据；上行方向，UE可以通过SN直接向MN所连接的核心网发送数据。此外，除了建立控制面连接，MN与核心网之间也可以有用户面连接。
由于UE在一个基站下可以同时接收多个小区的服务，因此MN为UE提供的服务小区组也可以称为master cell group(主小区组)，简称MCG，类似的SN为UE提供的服务小区组称为secondary cell group(辅小区组)，简称SCG。MCG和SCG其中分别包含至少一个小区(cell)。当MCG中仅有一个cell时，该cell为UE的PCell。当SCG中仅有一个cell时，该cell为UE的PSCell。主小区是指部署在主频点，且UE在小区发起初始连接建立过程或发起连接重建过程，或者在切换过程中指示为主小区的小区。主辅小区是指UE在辅基站发起随机接入过程的小区或者当UE在辅基站改变过程中跳过随机接入过程发起数据传输的小区，或者执行同 步的重配过程中发起随机接入的辅基站的小区。NR中为了归一化各种名词，将PCell和PSCell统称为特别小区(special cell)，即SpCell。当MCG或SCG中有多个小区时，除了SpCell的小区称为辅小区(secondary cell)，即SCell。此时各个cell group中的SCell与SpCell进行载波聚合(carrier aggregation，CA)，共同为UE提供传输资源，UE可以同时使用多个小区(载波)进行上下行通信，从而支持高速数据传输。图3为本申请实施例提供的一种双连接下各种小区的概念示意图。如图3所示，SCell与SpCell进行载波聚合。
条件切换(conditional handover，CHO)：
源基站在源链路质量较好时向UE发送CHO配置信息。具体的，源基站可以通过无线资源控制(radio resource control，RRC)重配置信令发送CHO配置信息。该CHO配置信息中可以包括CHO触发条件、一个或多个候选小区的信息(例如，候选小区的全球小区标识(cell global identifier，CGI)，或者，候选小区的物理小区标识(physical cell identifier，PCI)以及候选小区对应的频率信息)。UE在接收到该条件切换的CHO配置信息后，根据该CHO配置信息测量候选小区的小区质量是否满足切换触发条件，将满足切换触发条件的某候选小区作为目标小区；然后，UE与确定出的目标小区进行随机接入过程。当随机接入成功完成，UE给目标小区所属的基站(即目标基站)发送RRC重配置完成消息，通知目标基站条件切换完成。
CPC：
在MR-DC场景中，为了提高UE在移动中的通信性能，UE可以采用类似CHO的方式完成PSCell的改变，或者说将CHO运用于PSCell的改变流程中，该PSCell的改变方式称为CPC。MN或SN都可以触发CPC，由UE当前连接的MN或SN为UE提供候选PSCell，该SN即UE的源辅基站(source SN，S-SN)，最终由UE选择一个候选PSCell用于改变当前的PSCell，UE接入该候选PSCell所属的目标SN(target SN，T-SN)，通过该候选PSCell与目标SN通信，完成PSCell的改变。SN触发的CPC一种实现方式包括：MN向S-SN发送候选主辅小区信息之前，向UE发送包含所述候选主辅小区对应的重配置消息。SN触发的CPC的另一种实现方式包括：MN向S-SN发送候选主辅小区信息之后，向UE发送重配置消息。
由于SN触发的CPC有不同的实现方式，MN无法知晓通过何种实现方式执行相应操作，导致CPC流程可能无法正常执行。下面结合附图介绍本申请提供的通信方案。
图4为本申请实施例提供的一种通信方法流程图。如图4所示，该方法流程包括：
401、第一接入网设备接收来自第二接入网设备的第一指示信息。
第一指示信息(指示信息1)指示第一接入网设备(后续称为接入网设备1)在向第二接入网设备发送第一候选主辅小区信息之后或之前，发送第一重配置消息。第一候选主辅小区信息指示第二接入网设备请求第三接入网设备添加的候选主辅小区中，被第三接入网设备接受的一个或多个第一候选主辅小区。多个第一候选主辅小区是指被第三接入网设备接受的候选主辅小区。接入网设备1可以是UE的MN，第二接入网设备可以是UE的S-SN，第三接入网设备可以是UE的候选T-SN。
在一些实施方式中，第一接入网设备确定第一重配置消息，用于终端进行CPC。第一重配置消息可以是RRC重配置(RRCReconfiguration)消息。该第一重配置消息可包含第二接入网设备发送给MN的源辅基站RRC重配置(S-SN-RRCReconfiguration)，其中S-SN-RRCReconfiguration中可包含测量ID。该第一重配置消息还可包含条件主辅小区信息(conditional PSCell information)。条件主辅小区信息可包含一个或多个PSCell ID(即一个或多个第一候选主辅小区的ID)、与该一个或多个PSCell ID对应的执行条件ID、与该 一个或多个PSCell ID对应的目标辅基站RRC重配置(T-SN-RRCReconfiguration)消息、以及与该一个或多个PSCell ID对应的MN-RRCReconfiguration消息。其中MN-RRCReconfiguration消息是在UE接入到新的PSCell时MN对应的新的配置信息。执行条件ID与测量ID一一对应，可以理解为执行条件ID与测量ID代表的内容是一样的。测量ID对应一些测量配置，测量配置可包含CPAC触发事件，测量间隙等信息。每个测量ID对应的测量配置不同。在一些实施方式中，第一指示信息包含于辅基站切换请求(SN Change Required)消息。
S402、第一接入网设备根据第一指示信息，向UE发送第一重配置消息。
第一重配置消息包含一个或多个第一候选主辅小区对应的配置信息。
第一重配置消息包含一个或多个第一候选主辅小区对应的配置信息。
可选地，所述方法还包括步骤S403：接入网设备1向第二接入网设备发送第一候选主辅小区信息。可以理解，步骤S403可以在步骤402之前执行，或者在步骤S403之后执行，接入网设备1根据第一指示信息确定步骤S402与步骤S403的执行顺序。
本申请实施例中，第一指示信息指示接入网设备1在向第二接入网设备发送第一候选主辅小区信息之后或之前，发送第一重配置消息。第一接入网设备根据第一指示信息，向UE发送第一重配置消息；使得第一接入网设备能够明确向UE发送第一重配置信息以及向第二接入网设备发送第一候选主辅小区信息的先后顺序，从而，正常执行后续的CPC流程。
本申请中，第一指示信息的粒度可根据实际需求来配置。应理解，第一指示信息的粒度不同时，第一指示信息包含的信息不同，第一指示信息的作用也不同。下面介绍第一指示信息一些可能的实现方式以及可能的粒度。
在一种可能的实现方式中，所述第一指示信息包含指示字段，所述指示字段指示所述接入网设备1在向所述第二接入网设备发送所述第一候选主辅小区信息之后，发送所述第一重配置消息；以及，所述指示字段还指示所述接入网设备1在向所述第二接入网设备发送第二候选主辅小区信息之后，发送第二重配置消息；所述第二候选主辅小区信息指示所述第二接入网设备请求第四接入网设备添加的候选主辅小区中，被所述第四接入网设备接受的一个或多个第二候选主辅小区；所述第二重配置消息包含所述一个或多个第二候选主辅小区对应的配置信息；或者，所述指示字段指示所述接入网设备1在向所述第二接入网设备发送所述第一候选主辅小区信息之前，发送所述第一重配置消息；以及，所述指示字段还指示所述接入网设备1在向所述第二接入网设备发送第二候选主辅小区信息之前，发送第二重配置消息；所述第二候选主辅小区信息指示所述第二接入网设备请求第四接入网设备添加的候选主辅小区中，被所述第四接入网设备接受的一个或多个第二候选主辅小区；所述第二重配置消息包含所述一个或多个第二候选主辅小区对应的配置信息。
例如，第一指示信息包含的指示字段占用1bit，若该指示字段为“1”，则指示接入网设备1在向第二接入网设备发送第一候选主辅小区信息之后，发送第一重配置消息，还指示接入网设备1在向第二接入网设备发送第二候选主辅小区信息之后，发送第二重配置消息；若该指示字段为“0”，则指示接入网设备1在向第二接入网设备发送第一候选主辅小区信息之前，发送第一重配置消息，还指示接入网设备1在向第二接入网设备发送第二候选主辅小区信息之前，发送第二重配置消息。
其中，第四接入网设备是一个候选T-SN，可以是第三接入网设备，也可以是其他接入网设备。应理解，如果第四接入网设备是第三接入网设备，第一重配置消息和第一候选主辅小区信息是由SN触发的一次CPC流程中MN发送的，第二重配置消息和第二候选主辅小区信息 是由SN触发的另一次CPC流程中MN发送的。
第一候选主辅小区信息和第二候选主辅小区信息可视为第二接入网设备(即UE的S-SN)对应的两类候选主辅小区信息，每一种候选主辅小区信息分别对应不同候选T-SN的一个或多个候选主辅小区，第一重配置消息和第二重配置消息可视为第二接入网设备对应的两个重配置消息(例如RRCReconfiguration消息)。第一指示信息的粒度可以是针对第二接入网设备对应的各对候选主辅小区信息以及重配置消息。例如，第一候选主辅小区信息与第一重配置消息都对应第一候选主辅小区，或者，第二候选主辅小区信息与第二重配置消息息都对应第二候选主辅小区。或者说，第一指示信息的粒度可以是针对每个源辅基站，即per S-SN。也就是说，对于第二接入网设备确定的不同候选T-SN对应的每对候选主辅小区信息和重配置消息，第一指示信息均指示接入网设备1在向第二接入网设备发送候选主辅小区信息之后(或之前)，发送重配置消息。在一些实施方式中，第一指示信息包含指示字段，该指示字段指示第二接入网设备确定的所有的候选目标辅基站对应的每对候选主辅小区信息和重配置消息被第一接入网设备被发送的先后顺序。例如，第一指示信息包含的指示字段为1，该指示信息指示接入网设备1在向第二接入网设备发送任意候选主辅小区信息之后，发送该任意候选主辅小区信息对应的重配置消息。又例如，第一指示信息包含的指示字段为0，该指示信息指示接入网设备1在向第二接入网设备发送任意候选主辅小区信息之前，发送该任意候选主辅小区信息对应的重配置消息。
在一些实施方式中，第一指示信息可包含第二接入网设备的标识，以便对于第二接入网设备对应的任意一对候选主辅小区信息和重配置消息，第一指示信息均指示接入网设备1在向第二接入网设备发送候选主辅小区信息之后(或之前)，向UE发送重配置消息。
在该实现方式中，第一指示信息的粒度为每个源辅基站，这样第二接入网设备通过向接入网设备1发送第一指示信息就能指示接入网设备1发送任意一对候选主辅小区信息和重配置消息的先后顺序，信令开销少，并使得CPC流程正常执行。
可以理解，以上作为T-SN的第三接入网设备以及第四接入网设备仅为示意，作为S-SN的第二接入网设备可以确定N个(N≥1)候选T-SN，所述第一指示信息中的指示字段可以用于指示N个候选T-SN分别对应的候选主辅小区信息和重配置消息被发送的先后顺序，也就是说，N个候选T-SN对应的候选主辅小区信息和重配置消息都采用相同的顺序被发送。
在一种可能的实现方式中，第一指示信息指示接入网设备1在向第二接入网设备发送第一候选主辅小区信息之后(或之前)，向UE发送第一重配置消息。第一指示信息还指示接入网设备1在向第二接入网设备发送第二候选主辅小区信息之前(或之后)，向UE发送第二重配置消息。第二候选主辅小区信息指示第二接入网设备请求第四接入网设备添加的候选主辅小区中，被第四接入网设备接受的一个或多个第二候选主辅小区。第二重配置消息包含一个或多个第二候选主辅小区对应的配置信息。
可见，第一指示信息可独立地指示接入网设备1发送第一重配置消息和第一候选主辅小区信息的先后顺序，以及该接入网设备1发送第二重配置消息和第二候选主辅小区信息的先后顺序。第一候选主辅小区信息和第一重配置消息可视为第三接入网设备(UE的一个T-SN)对应的一对候选主辅小区信息和重配置消息；第二候选主辅小区信息和第二重配置消息可视为第四接入网设备(UE的另一个T-SN)对应的一对候选主辅小区信息和重配置消息。应理解，第一指示信息可独立地指示接入网设备1发送第三接入网设备对应的各对候选主辅小区信息和重配置消息(例如第一候选主辅小区信息和第一重配置消息)的先后顺序，以及接入网设备1发送第四接入网设备对应的各对候选主辅小区信息和重配置消息(例如第二候选主辅小 区信息和第二重配置消息)的先后顺序。可见，第一指示信息的粒度可以是针对每个T-SN(例如第三接入网设备和第四接入网设备)对应的各对候选主辅小区信息和重配置消息。或者说，第一指示信息的粒度可以是每个目标辅基站(某个T-SN)，即per candidate-SN。
在一些实施方式中，第一指示信息包括第一字段以及第二字段，所述第一字段对应于所述第三接入网设备的标识和/或所述一个或多个第一候选主辅小区的标识，所述第二字段对应于第四接入网设备的标识和/或一个或多个第二候选主辅小区的标识；所述第一字段指示所述第一接入网设备在向所述第二接入网设备发送所述第一候选主辅小区信息之前或之后，发送所述第一重配置消息；所述第二字段指示所述第一接入网设备在向所述第二接入网设备发送第二候选主辅小区信息之前或之后，发送所述第二重配置消息；其中，所述第二候选主辅小区信息指示所述一个或多个第二候选主辅小区，所述一个或多个第二候选主辅小区为所述第二接入网设备请求所述第四接入网设备添加的候选主辅小区中，被所述第四接入网设备接受的一个或多个候选主辅小区；所述第二重配置消息包含所述一个或多个第二候选主辅小区对应的配置信息。
在这些实施例中，所述一个或多个第一候选主辅小区的标识可以是第二接入网设备请求第三接入网设备添加的候选主辅小区中，被第三接入网设备接受的全部的候选主辅小区的标识；所述一个或多个第二候选主辅小区的标识可以是第二接入网设备请求第四接入网设备添加的候选主辅小区中，被第四接入网设备接受的全部的候选主辅小区的标识。因此，第一字段对应于第三接入网设备的标识也就是相当于对应于所述一个或多个第一候选主辅小区的标识，第二字段对应于第四接入网设备的标识也就是相当于对应于所述一个或多个第二候选主辅小区的标识。
在一些实施方式中，第一指示信息还可包含所述第三接入网设备的标识和/或所述一个或多个第一候选主辅小区的标识，以及第四接入网设备的标识和/或一个或多个第二候选主辅小区的标识。可选地，第一指示信息中包含第三接入网设备的一个或多个候选主辅小区的标识，而不包含第三接入网设备的标识；第一指示信息中可以包含第四接入网设备的一个或多个候选主辅小区的标识，而不包含第四接入网设备的标识。可选地，第一指示信息中包含第三接入网设备的标识，而不包含一个或多个候选主辅小区的标识；第一指示信息中可以包含第四接入网设备的标识，而不包含第四接入网设备的一个或多个候选主辅小区的标识。
图5为本申请实施例提供的一种第一指示信息的示例。如图5所示，第一指示信息包括：第三接入网设备的标识、第四接入网设备的标识、第一字段以及第二字段。第一字段可以是一个或多个bit，第二字段也可以是一个或多个bit。例如，第一字段为“0”，第二字段为“1”；第一字段为“0”表示在发送第一候选主辅小区信息之前，发送第一重配置消息；第二字段为“1”表示在发送第二候选主辅小区信息之后，发送第二重配置消息。又例如，第一字段为“00”，第二字段为“11”，第一字段为“00”表示在发送第一候选主辅小区信息之前，发送第一重配置消息，第二字段为“11”表示在发送第二候选主辅小区信息之后，发送第二重配置消息。图5中，第一字段与第三接入网设备的标识相对应，第二字段与第四接入网设备的标识相对应。应理解，第一指示信息可包含两个或两个以上T-SN(例如第三接入网设备和第四接入网设备)的标识，以及每个T-SN对应的字段(例如第一字段和第二字段)。表1示出了第一指示信息包括的各T-SN的标识与其对应的字段的示例。
表1
UE的T-SN的标识 字段
第三接入网设备的标识 第一字段
第四接入网设备的标识 第二字段
…… ……
在一些实施方式中，第一字段可对应一个或一个以上接入网设备的标识，第二字段可对应一个或一个以上接入网设备的标识。例如，第一字段对应接入网设备3的标识、接入网设备4的标识，该第一字段指示第一接入网设备发送接入网设备3(UE的一个T-SN)对应的候选主辅小区信息和重配置消息的先后顺序，还指示第一接入网设备发送接入网设备4(UE的另一个T-SN)对应的候选主辅小区信息和重配置消息的先后顺序。也就是说，采用一个字段就可以指示多个T-SN分别的候选主辅小区信息和重配置消息都采用相同的先后顺序进行发送。在这些实施例中，无需采用对应多个T-SN的多个字段，占用比特位较少。
在一些实施方式中，第一指示信息包含两个或两个以上字段，每个字段对应一个接入网设备的标识。在这些实施例中，每个字段可独立地指示一个接入网设备对应的候选主辅小区信息和重配置消息的先后顺序。
在该实现方式中，第一指示信息的粒度为per candidate-SN，该第一指示信息可独立地指示接入网设备1发送UE的每个T-SN(例如第三接入网设备和第四接入网设备)对应的各对候选主辅小区信息和重配置消息的先后顺序，灵活性强。另外，不必使用两条或两条以上指示信息分别来指示两个或两个T-SN分别对应的各对候选主辅小区信息和重配置消息的先后顺序，信令开销减少。
在一种可能的实现方式中，第三接入网设备为UE的T-SN，第一指示信息包含第三接入网设备的标识，且未包含UE的其他T-SN的标识。在该实现方式中，第一指示信息仅包含UE的一个T-SN(即第三接入网设备)的标识，以便指示接入网设备1发送该第三接入网设备对应于的各对候选主辅小区信息和重配置消息(例如第一候选主辅小区信息和第一重配置消息)的先后顺序，占用比特少。第一指示信息的粒度可以是针对每个T-SN(例如第三接入网设备)对应于的各对候选主辅小区信息和重配置消息。或者说，第一指示信息的粒度可以是每个目标辅基站(某个T-SN)，即per T-SN。应理解，在该实现方式中，每个指示信息对应UE的一个T-SN。举例来说，第二接入网设备向接入网设备1发送指示信息1(即第一指示信息)，该第一指示信息仅指示接入网设备1在向第二接入网设备发送第一候选主辅小区信息之前(或之后)，发送第一重配置消息；第二接入网设备向接入网设备1发送指示信息2，该第一指示信息仅指示接入网设备1在向第二接入网设备发送第二候选主辅小区信息之前(或之后)，发送第二重配置消息。
在一种可能的实现方式中，所述第一指示信息包含第三字段、所述第三字段对应于所述一个或多个第一候选主辅小区的标识，以及第四字段，所述第四字段对应于一个或多个第三候选主辅小区的标识。
可选地，所述第三字段指示所述第一接入网设备在向所述第二接入网设备发送所述第一候选主辅小区信息之后，发送所述第一重配置消息；所述第四字段指示所述第一接入网设备在向所述第二接入网设备发送所述一个或多个第三候选主辅小区对应的第三候选主辅小区信息之前，发送所述一个或多个第三候选主辅小区对应的第三重配置消息；所述一个或多个第三候选主辅小区属于一个或多个接入网设备，该一个或多个接入网设备包括第三接入网设备和/或其他接入网设备。在一些实施方式中，所述第三字段还对应于一个或多个第四候选主辅小区的标识，所述第三字段还指示所述第一接入网设备在向所述第二接入网设备发送所述一个或多个第四候选主辅小区对应的第四候选主辅小区信息之后，发送所述一个或多个第四候选主辅小区对应的第四重配置消息。
可选地，所述第三字段指示所述第一接入网设备在向所述第二接入网设备发送所述第一候选主辅小区信息之前，发送所述第一重配置消息；所述第四字段指示所述第一接入网设备在向所述第二接入网设备发送所述一个或多个第三候选主辅小区对应的第三候选主辅小区信息之后，发送所述一个或多个第三候选主辅小区对应的第三重配置消息；所述一个或多个第三候选主辅小区对应于一个或多个接入网设备。在一些实施方式中，所述第一指示信息还包含与所述第三字段对应的一个或多个第四候选主辅小区的标识，所述第三字段还指示所述第一接入网设备在向所述第二接入网设备发送所述一个或多个第四候选主辅小区对应的第四候选主辅小区信息之前，发送所述一个或多个第四候选主辅小区对应的第四重配置消息。
上述一个或多个第四候选主辅小区属于一个或多个接入网设备，该一个或多个接入网设备包括第三接入网设备和/或其他作为候选T-SN的接入网设备。
可选地，所述第一指示信息还包括所述一个或多个第一候选主辅小区的标识，以及，所述一个或多个第三候选主辅小区的标识。
应理解，第四字段对应的一个或多个第三候选主辅小区可属于同一个接入网设备，也可属于不同的接入网设备；第三字段可对应于属于不同接入网设备的候选主辅小区。与第三字段对应的一个或多个第一候选主辅小区的标识可以是第三接入网设备接受的一部分候选主辅小区的标识，也可以是第三接入网设备接受的全部的候选主辅小区的标识。举例来说，第三接入网设备接受第二接入网设备请求第三接入网设备添加的第一候选主辅小区1至第一候选主辅小区10，第一候选主辅小区1至第一候选主辅小区4对应于第三字段，第一候选主辅小区5至第一候选主辅小区10对应于第四字段。在举例中，第三字段可指示第一接入网设备在向第二接入网设备发送第一候选主辅小区1至第一候选主辅小区4对应的候选主辅小区信息之后，发送第一候选主辅小区1至第一候选主辅小区4对应于重配置消息；第四字段可指示第一接入网设备在向第二接入网设备发送第一候选主辅小区5至第一候选主辅小区10对应的候选主辅小区信息之前，发送第一候选主辅小区5至第一候选主辅小区10对应的重配置消息。对于一个接入网设备来说，其接收或拒绝的候选主辅小区可分为两部分，一部分对应于第三字段，另一部分对应于第四字段。对于一个接入网设备来说，其接收或拒绝的候选主辅小区也可均对应于第三字段或者第四字段。对于第三字段来说，可对应属于不同接入网设备的候选主辅小区的标识，也可以仅对应属于同一接入网设备的一个或多个候选主辅小区的标识。同理，对于第四字段来说，可对应属于不同接入网设备的候选主辅小区的标识，也可以仅对应属于同一接入网设备的一个或多个候选主辅小区的标识。
可见，第一指示信息可独立地指示接入网设备1发送每个候选主辅小区对应的重配置消息和候选主辅小区信息的先后顺序。第一指示信息的粒度可以是针对每个候选主辅小区对应于的候选主辅小区信息和重配置消息。或者说，第一指示信息的粒度可以是每个候选主辅小区，即per PSCell。图6A为本申请实施例提供的另一种第一指示信息的示例。如图6A所示，第一指示信息包括：第三字段、与该第三字段对应的标识1至标识K(包含一个或多个第一候选主辅小区的标识以及属于其他接入网设备的候选主辅小区的标识)、第四字段、与该第四字段对应的标识M至标识P(一个或多个第三候选主辅小区的标识)。其中，K、M、P均为大于1的整数，P大于M。第三字段可以是一个或多个bit，第四字段也可以是一个或多个bit。例如，第三字段为0，第四字段为1。又例如，第三字段为00，第四字段为11。应理解，第一指示信息可包含两个或两个候选主辅小区的标识，以及每个候选主辅小区对应一个字段(例如第三字段或第四字段)。表2示出了第一指示信息包括的各候选主辅小区与其对应的字段的示例。
表2
候选主辅小区的标识 字段
第一候选主辅小区1(标识1) 第三字段
第一候选主辅小区2(标识2) 第三字段
第三候选主辅小区3(标识3) 第三字段
…… ……
第三候选主辅小区1(标识M) 第四字段
第三候选主辅小区2(标识N) 第四字段
第一候选主辅小区3(标识N+1) 第四字段
…… ……
从表2可以看出，属于同一个接入网设备的不同候选主辅小区可对应不同的字段，例如第一候选主辅小区2(标识2)对应第三字段，第一候选主辅小区3(标识N+1)对应第四字段。或者说，一个字段可对应于属于不同接入网设备的多个主辅候选小区。
在一些实施方式中，候选主辅小区的标识可以为全球小区标识(Cell Global Identifier，CGI)或PCI。在在一些实施方式中，第一指示信息还包含第三接入网设备的标识，一个或多个第一主辅候选小区的标识与第三接入网设备的标识相对应。一个或多个第一主辅候选小区的标识可以为临时的编号，这样接入网设备1结合第三接入网设备的标识和一个或多个第一候选主辅小区的标识可确定一个或多个第一候选主辅小区，一个或多个第一候选主辅小区的标识可占用较少的比特位。举例来说，一个或多个第三候选主辅小区的标识包括：编号1、编号2、编号3、编号4、编号5；接入网设备1结合第三接入网设备的标识和编号1、编号2、编号3、编号4、编号5(第三接入网设备的主辅候选小区的编号)可确定一个或多个第一候选主辅小区。
在该实现方式中，第一指示信息的粒度为per PSCell，第一指示信息可独立地指示接入网设备1向第二接入网设备发送每个候选主辅小区对应的重配置消息和候选主辅小区信息的先后顺序，灵活性高、信令开销少。
在另一种可能的实现方式中，所述第一候选主辅小区信息指示所述第二接入网设备请求第三接入网设备添加的候选主辅小区中，被所述第三接入网设备接受的一个所述第一候选主辅小区；所述第一重配置消息包含所述一个第一候选主辅小区对应的配置信息；所述第一指示信息包含第五字段、与所述第五字段对应的一个第一候选主辅小区的标识，所述第五字段指示所述第一接入网设备在向所述第二接入网设备发送第一候选主辅小区信息之前或之后，发送所述第一重配置消息。在该实现方式中，第五字段仅对应一个候选主辅小区的标识。
在一些实施方式中，第一指示信息可包含两个或两个以上字段(包含第五字段)以及与该两个或两个以上字段一一对应的两个或两个以上候选主辅小区的标识；每个字段指示第二接入网设备发送该字段指示的对应一个候选主辅小区的候选主辅小区信息和重配置消息的先后顺序。图6B为本申请实施例提供的另一种第一指示信息的示例。
如图6B所示，第一指示信息包括：第一指示信息包含：标识1、与标识1对应的字段1、标识2、与标识2对应的字段2、…、标识H、与标识H对应的字段H，每个标识为UE的一个候选主辅小区的标识，标识1至标识H可属于同一个接入网设备，也可属于不同的接入网设备；每个字段指示第二接入网设备发送该字段对应的候选主辅小区信息和重配置消息的先后顺序。字段1至字段H中的每个字段均为两个不同字段中的任一个。例如，字段1至字段H 中的每个均为1和1中的任一个。举例来说，字段1为0，字段1指示第二接入网设备在发送该标识1对应的候选主辅小区信息之前，发送该标识1对应的重配置消息；字段2为1，字段2指示第二接入网设备在发送该标识2对应的候选主辅小区信息之后，发送该标识2对应的重配置消息。
可以理解，对于由第一指示信息指示采用相同顺序发送候选主辅小区信息和重配置消息的多个候选主辅小区而言，其分别对应的重配置消息可以在一条消息中发送给UE，其分别对应的候选主辅小区信息也可以在同一条消息中发送给第二接入网设备。
在该实现方式中，每个候选主辅小区对应一个字段，可靠性高，且可以灵活配置。
图7为本申请实施例提供的另一种通信方法流程图。图7中的方法流程为图4中的方法流程的一种可能的实现方式。如图7所示，该方法流程包括：
701、接入网设备1接收来自第二接入网设备的第一指示信息。
步骤701可参阅步骤401。
第一指示信息指示接入网设备1在向第二接入网设备发送第一候选主辅小区信息之后，向UE发送第一重配置消息。第一候选主辅小区信息指示第二接入网设备请求第三接入网设备添加的候选主辅小区中，被第三接入网设备接受的一个或多个第一候选主辅小区。第一重配置消息包含一个或多个第一候选主辅小区对应的配置信息。
第一指示信息还指示接入网设备1在向第二接入网设备发送第二候选主辅小区信息之后，发送第二重配置消息；第二候选主辅小区信息指示第二接入网设备请求第四接入网设备添加的候选主辅小区中，被第四接入网设备接受的一个或多个第二候选主辅小区；第二重配置消息包含一个或多个第二候选主辅小区对应的配置信息。
第一指示信息可包含第二接入网设备的标识。第一指示信息的粒度为per S-SN。
702、接入网设备1根据第一指示信息，在向第二接入网设备发送第一候选主辅小区信息之后，向UE发送第一重配置消息。
703、接入网设备1根据第一指示信息，在向第二接入网设备发送第二候选主辅小区信息之后，向UE发送第二重配置消息。
在一些实施方式中，第一指示信息指示接入网设备1在向第二接入网设备发送第一候选主辅小区信息之前，向UE发送第一重配置消息；还指示接入网设备1在向第二接入网设备发送第二候选主辅小区信息之前，发送第二重配置消息；步骤702可替换为：接入网设备1根据第一指示信息，在向第二接入网设备发送第一候选主辅小区信息之前，向UE发送第一重配置消息；步骤703可替换为：接入网设备1根据第一指示信息，在向第二接入网设备发送第二候选主辅小区信息之前，向UE发送第二重配置消息。
在一些实施方式中，第一重配置消息和第二重配置信息可包含于同一条重配置信息(例如RRC重配置消息)。也就是说，接入网设备1向UE发送一条包含第一重配置消息和第二重配置消息的重配置消息，即第一重配置消息和第二重配置消息放在一起发送。在这些实施例中，第一重配置消息和第二重配置消息通过一条重配置消息发送，可以减少信令开销。
在一些实施方式中，第一重配置消息和第二重配置消息为两条不同的消息，即第一重配置消息和第二重配置消息不放在一起发送。在这些实施例中，接入网设备1可先发送第一重配置消息再发送第二重配置消息，也可先发送第二重配置消息再发送第一重配置消息。例如，接入网设备1在接收到来自第四接入网设备的辅基站增加请求确认消息之后，发送第二重配置消息，该辅基站增加请求确认消息指示第二接入网设备请求第四接入网设备添加的候选主辅小区中，被第四接入网设备接受的一个或多个第二候选主辅小区。在这些实施例中，第一 重配置消息和第二重配置消息被分别发送，可以使得UE更快地接收到一部分重配置消息，灵活性强。
本申请实施例中，不限定接入网设备1通过一条消息发送第一重配置消息和第二重配置消息，还是通过多条消息发送第一重配置消息和第二重配置消息。
本申请实施例中，第一指示信息的粒度为per S-SN，第一指示信息既能指示接入网设备1在向第二接入网设备发送第一候选主辅小区信息之后，发送第一重配置消息；又能指示接入网设备1在向第二接入网设备发送第二候选主辅小区信息之后，发送第二重配置消息。这样第二接入网设备不必额外发送指示接入网设备1在向第二接入网设备发送第一候选主辅小区信息之后，发送第一重配置消息的指示信息；信令开销减少。
图8为本申请实施例提供的另一种通信方法流程图。图8中的方法流程为图4中描述的方法的一种可能的实现方式。如图8所示，该方法流程包括：
801、接入网设备1接收来自第二接入网设备的第一指示信息。
步骤801可参阅步骤401。
第一指示信息指示接入网设备1在向第二接入网设备发送第一候选主辅小区信息之后，发送第一重配置消息。第一指示信息还指示接入网设备1在向第二接入网设备发送第二候选主辅小区信息之前，发送第二重配置消息。在一种可能的实现方式中，第一指示信息包括第一字段，第二字段，与第一字段对应的第三接入网设备的标识、与第二字段对应的第四接入网设备的标识；第一字段指示接入网设备1在向第二接入网设备发送第一候选主辅小区信息之后，发送第一重配置消息；第二字段指示接入网设备1在向第二接入网设备发送第二候选主辅小区信息之前，发送第二重配置消息。第一指示信息的粒度为per candidate-SN。
802、接入网设备1根据第一字段，在向第二接入网设备发送第一候选主辅小区信息之后，向UE发送第一重配置消息。
803、接入网设备1根据第二字段，在向第二接入网设备发送第二候选主辅小区信息之前，向UE发送第二重配置消息。
在一些实施方式中，步骤802可替换为：接入网设备1根据第一字段，在向第二接入网设备发送第一候选主辅小区信息之前，向UE发送第一重配置消息；步骤803可替换为：接入网设备1根据第二字段，在向第二接入网设备发送第二候选主辅小区信息之后，向UE发送第二重配置消息。
本申请对步骤802-803的顺序不做限定。
本申请实施例中，第一指示信息可独立地指示接入网设备1发送第一重配置消息和第一候选主辅小区信息的先后顺序，以及该接入网设备1发送第二重配置消息和第二候选主辅小区信息的先后顺序；信令开销少。
图9为本申请实施例提供的另一种通信方法流程图。图9中的方法流程为图4中描述的方法的一种可能的实现方式。如图9所示，该方法流程包括：
901、接入网设备1接收来自第二接入网设备的第一指示信息。
步骤901可参阅步骤401。
第一指示信息指示接入网设备1在向第二接入网设备发送第一候选主辅小区信息之后或之前，向UE发送第一重配置消息。第三接入网设备为UE的一个T-SN，第一指示信息可包含第三接入网设备的标识以及第一字段，第一字段指示接入网设备1在向第二接入网设备发送第一候选主辅小区信息之后或之前，发送第一重配置消息。
902、接入网设备1根据第一指示信息，在向第二接入网设备发送第一候选主辅小区信息 之后或之前，向UE发送第一重配置消息。
903、接入网设备1接收来自第二接入网设备的第三指示信息。
第三指示信息指示接入网设备1在向第二接入网设备发送第二候选主辅小区信息之后或之前，向UE发送第二重配置消息。第四接入网设备为UE的另一个T-SN，第三指示信息可包含第四接入网设备的标识以及第二字段，第二字段指示接入网设备1在向第二接入网设备发送第二候选主辅小区信息之后或之前，发送第二重配置消息。
第一指示信息的粒度和第三指示信息的粒度均为per candidate-SN。
904、接入网设备1根据第三指示信息，在向第二接入网设备发送第二候选主辅小区信息之后或之前，向UE发送第二重配置消息。
本申请实施例中，指示信息的粒度均为per candidate-SN，每个指示信息独立地指示接入网设备1发送UE的一个T-SN对应的候选主辅小区信息和重配置消息的先后顺序，灵活性强。
图10为本申请实施例提供的另一种通信方法流程图。图10中的方法流程为图4中描述的方法的一种可能的实现方式。如图10所示，该方法流程包括：
1001、接入网设备1接收来自第二接入网设备的第一指示信息。
步骤1001可参阅步骤401。
在一些实施方式中，第一指示信息包含第三字段、与第三字段对应的一个或多个第一候选主辅小区的标识、第四字段、与第四字段对应的一个或多个第三候选主辅小区的标识，所述第三字段指示第一接入网设备在向第二接入网设备发送第一候选主辅小区信息之后，发送第一重配置消息；所述第四字段指示第一接入网设备在向第二接入网设备发送一个或多个第三候选主辅小区对应的第三候选主辅小区信息之前，发送一个或多个第三候选主辅小区对应的第三重配置消息；所述一个或多个第三候选主辅小区属于一个或多个接入网设备。第一指示信息的粒度为per PSCell。假设第二接入网设备确定将第三接入网设备管理的cell1，cell2作为为UE的候选PScell；cell1的标识对应于第三字段，cell2的标识对应于第四字段。
1002、接入网设备1根据第三字段，在向第二接入网设备发送第一候选主辅小区信息之后，向UE发送第一重配置消息。
1003、接入网设备1根据第四字段，在向第二接入网设备发送第三候选主辅小区信息之前，向UE发送第三重配置消息。
从而，虽然cell1与cell2都属于第三接入网设备，但各自对应的重配置信息的发送是独立的。
在一些实施方式中，步骤1002可替换为：接入网设备1根据第三字段，在向第二接入网设备发送第一候选主辅小区信息之前，向UE发送第一重配置消息；步骤1003可替换为：接入网设备1根据第四字段，在向第二接入网设备发送第三候选主辅小区信息之后，向UE发送第三重配置消息。
本申请对以上步骤1002-1003的顺序不做限定。
本申请实施例中，第一指示信息的粒度为per PSCell，第一指示信息可独立地指示接入网设备1发送第一重配置消息和第一候选主辅小区信息的先后顺序，以及该接入网设备1发送第三重配置消息和第三候选主辅小区信息的先后顺序，信令开销少。
图11为本申请实施例提供的另一种通信方法流程图。图11中的方法流程为图4中描述的方法的一种可能的实现方式。图11中，S-SN可以是上述第二接入网设备，即UE当前的辅 基站；MN可以是上述接入网设备1，即UE的主基站；候选SN(candidate-SN)也可以称为候选目标SN，可以是上述第三接入网设备，即UE的T-SN。如图11所示，该方法流程包括：
1101、S-SN向MN发送辅基站切换请求消息。
辅基站切换请求(SN change required)消息中可包含candidate SN的标识(identity，ID)，候选主辅小区列表(candidate PSCell list)，S-SN-RRCReconfiguration。candidate-candidate SN可以是S-SN想要添加的一个或多个PSCell所对应的SN。candidate PSCell list包含了一个或多个PSCell ID(即S-SN想要添加的一个或多个PSCell的标识)，以及每个PSCell ID对应的执行条件(execution condition)ID。S-SN-RRCReconfiguration中包含了测量相关的信息，比如测量ID。此处的测量ID与执行条件ID相对应。
在一些实施方式中，辅基站切换请求消息包含上述第一指示信息。第一指示信息指示MN(即接入网设备1)在向S-SN(即第二接入网设备)发送第一候选主辅小区信息之前，发送第一重配置消息。本申请实施例中，第一指示信息可以在切换准备期间通过S-SN发送给MN，也可以是在切换准备期之前通过S-SN发送给MN。对于切换准备期间通过S-SN发送给MN第一指示信息，第一指示信息可包含于SN change required消息，第一指示信息还可在其他信令中发送，也可以单独发送。并且可以不用每一次S-SN发起的CPC流程中都携带该信息，如果没有收到新的指示信息(例如第二指示信息)，可以默认用接收到的第一指示信息。该第一指示信息可以是per S-SN，per candidate-SN，per PSCell粒度的。
1102、MN向candidate SN发送辅基站增加请求。
MN可根据candidate SN ID，向其所指示的candidate SN发送辅基站增加请求。辅基站增加请求(SN addition request)可包含CAPA指示(indicator)字段，该CAPA指示字段指示此消息是CPAC请求，而不是PAC请求；以及candidate PSCell list。
1103、candidate SN决定S-SN请求candidate SN添加的候选主辅小区中，其接受的一个或多个第一候选主辅小区。
辅基站增加请求包含candidate PSCell list，该candidate PSCell list包含S-SN请求candidate SN添加的候选主辅小区。S-SN在接收到辅基站增加请求之前，可决定其接受的一个或多个第一候选主辅小区。S-SN决定了candidate SN与其对应的一个或多个PSCell，但是candidate SN可能并不会完全将S-SN请求的所有PSCell全部接受，可能会因为一些PSCell的负荷过重或者资源不够用等原因拒绝一部分PSCell，接收剩余的PSCell。步骤1103可理解为candidate SN执行PSCell decision操作。
1104、candidate SN向MN发送辅基站增加请求确认消息。
辅基站增加请求确认消息(SN addition request ACK)可包含candidate SN接受了的一个或多个PSCell ID(即一个或多个第一候选主辅小区的ID)，以及与该一个或多个PSCell ID对应的T-SN-RRCReconfiguration消息。T-SN-RRCReconfiguration消息中包含了随机接入等信息，用于下发给UE，让UE了解想要接入PSCell的必要的配置信息。在一些实施方式中，每个PSCell ID对应一个T-SN-RRCReconfiguration消息，即每个PSCell对应一个T-SN-RRCReconfiguration消息。
1105、MN生成RRC重配置消息。
MN生成(generate)RRC重配置消息(RRCReconfiguration消息，即第一重配置消息)可以是：MN根据S-SN发送给MN的辅基站切换请求消息与candidate SN发送给MN的辅基站增加请求确认消息，生成一个CPC消息，该CPC消息为RRCReconfiguration消息。该CPC消息可包含S-SN发送给MN的S-SN-RRCReconfiguration。S-SN-RRCReconfiguration中包含有 测量ID。该CPC消息也包含条件主辅小区信息(conditional PSCell information)，该条件主辅小区信息中可包含一个或多个PSCell ID(即candidate SN接受的一个或多个第一候选主辅小区的ID)，与该一个或多个PSCell ID对应的执行条件ID，与PSCell ID对应的T-SN-RRCReconfiguration消息，与该一个或多个PSCell ID对应的MN-RRCReconfiguration消息。MN-RRCReconfiguration消息是在UE接入到新的PSCell时，MN对应的新的配置信息。其中执行条件ID与测量ID在这一步骤对应起来，可以理解为执行条件ID与测量ID代表的内容是一样的。与第一指示信息的粒度相对应，MN生成RRC重配置消息的粒度也可以是per S-SN、per candidate-SN或者per PSCell。
1106、MN将RRC重配置消息发送给UE。
1107、UE发送RRC重配置完成消息给MN。
RRC重配置完成消息(RRCReconfiguration消息)用于MN确认UE已经成功接收了RRCReconfiguration消息。
1108、MN向S-SN发送第一候选主辅小区信息。
第一候选主辅小区信息指示S-SN请求candidate SN添加的候选主辅小区中，被candidate SN接受的一个或多个第一候选主辅小区。该一个或多个第一候选主辅小区可以为candidate SN接受的候选主辅小区，即accepted candidate。可见，第一候选主辅小区信息可指示哪些PSCell被candidate SN接受了，哪些PSCell被candidate SN拒绝了。
1109、S-SN向MN发送更新后的源辅基站RRC重配置消息。
步骤1109是可选的，而非必要的。如果S-SN请求candidate SN添加的所有的PSCell都被candidate SN接受并配置的话，则没有这一步骤；如果S-SN请求candidate SN添加的PSCell一部分被配置的话，则S-SN向MN发送更新后的S-SN-RRCReconfiguration消息。例如，S-SN一开始配置PSCell 1，PSCell 2，PSCell 3为候选主辅小区，其中PSCell 1，PSCell2为同频，PSCell 3与PSCell 1，PSCell 2为异频小区，则在步骤1101中S-SN-RRCReconfiguration消息需要配置测量间隙；但是如果candidate SN拒绝了PSCell3，接受了PSCell 1与PSCell 2，对于同频小区则不需要测量间隙，步骤11099中的S-SN-RRCReconfiguration消息便不再配置测量间隙。
1110、MN将更新后的源辅基站RRC重配置消息发送给UE。
1111、UE向MN发送RRC重配置完成消息。
UE在成功接收来自MN的更新后的源辅基站RRC重配置消息后，向MN发送RRCReconfigurationComplete。
1112、MN给SN发送更新确认消息。
更新确认消息(update confirm)用于告诉SN，新的S-SN-RRCReconfiguration消息已经成功被UE接收。
本申请实施例中，第一指示信息指示MN在向S-SN发送第一候选主辅小区信息之前，发送第一重配置消息。MN根据第一指示信息，可先发送第一重配置消息，再发送第一候选主辅小区信息，可以使得CPC流程正常执行。另外，MN先发送第一重配置消息，再发送第一候选主辅小区信息，可以更快的为UE更新候选主辅小区。
图12为本申请实施例提供的另一种通信方法流程图。图12中的方法流程为图4中的方法流程的一种可能的实现方式。图12中，S-SN(源SN，source-SN)可以是上述第二接入网设备，即UE当前的辅基站；MN可以是上述接入网设备1，即UE的主基站；candidate SN可以是上述第三接入网设备，即UE的T-SN。如图12所示，该方法流程包括：
1201、S-SN向MN发送辅基站切换请求消息。
步骤1201可参阅步骤1101。
在一些实施方式中，辅基站切换请求消息包含上述第一指示信息。第一指示信息指示MN(即接入网设备1)在向S-SN(即第二接入网设备)发送第一候选主辅小区信息之后，发送第一重配置消息。
1202、MN根据candidate SN ID，向其所指示的candidate SN发送辅基站增加请求。
步骤1202可参阅步骤1102。
1203、candidate SN决定S-SN请求candidate SN添加的候选主辅小区中，被candidate SN接受的一个或多个第一候选主辅小区。
步骤1203可参阅步骤1103。
1204、candidate SN向MN发送辅基站增加请求确认消息。
步骤1204可参阅步骤1104。
1205、MN向S-SN发送第一候选主辅小区信息。
步骤1205可参阅步骤1108。
1206、S-SN向MN发送更新后的源辅基站RRC重配置消息。
步骤1206是可选的，而非必要的。步骤1206可参阅步骤1109。
1207、MN生成RRC重配置消息。
步骤1207可参阅步骤1105。
1208、MN将RRC重配置消息发送给UE。
步骤1208可参阅步骤1106。
1209、UE发送RRC重配置完成消息给MN。
步骤1209可参阅步骤1107。
1210、MN给SN发送更新确认消息。
步骤1210可参阅步骤1112。
本申请实施例中，第一指示信息指示MN在向S-SN发送第一候选主辅小区信息之后，发送第一重配置消息。MN根据第一指示信息，可先发送第一候选主辅小区信息，再发送第一重配置消息，可以使得CPC流程正常执行。图12中的方法流程与图11中的方法流程相比，MN只需要向UE发送一次重配置消息，信令开销少。
本申请还提供了在UE触发CHO且未触发条件主辅小区的增加和改变(conational PSCell addition and change，CPAC)CPAC的场景下，使得网络侧了解CPAC未触发原因的方案。其中，采用CPAC，UE可以根据MN或者SN提供的候选PScell，添加PScell，和/或,改变当前接入的PScell。
下面介绍附图描述本申请提供的使得网络侧了解为何CPAC没有触发的原因的方案。
图13为本申请实施例提供的另一种通信方法流程图。如图13所示，该方法包括：
1301、UE接入第一接入网设备的目标主小区。
步骤1301一种可能的实现方式如下：在触发CHO的情况下，UE接入第一接入网设备(后续称为接入网设备2)的目标主小区。也就是说，UE在满足切换主小区(即触发CHO)的情况下，接入第一接入网设备的目标主小区。
1302、UE在未触发CPAC的情况下，向第一接入网设备发送第一指示信息。
第一指示信息(指示信息2)用于确定UE未触发CPAC的原因。
UE可配置有CHO的触发条件，以及一个或多个候选PSCell的配置信息与触发条件(也 就是CPAC配置信息)。
在一些实施方式中，源PCell(对应于源主基站)给UE下发CHO配置信息(用于配置CHO)时，对于每一个候选PCell，可以包括与至少一个候选PCell中的小区组成DC的至少一个候选PSCell(s)的配置信息与触发条件(也就是CPAC配置信息)。CHO是针对MN下PCell的切换，CPAC是针对SN下PSCell的变更。CHO配置信息可用于配置一个或多个CHO(每个CHO对应一个或多个候选PCell)，CPAC配置信息可用于配置一个或多个CPAC(每个CPAC对应一个或多个候选PSCell)，并该一个或多个CHO与该一个或多个CPAC具有对应关系。每个CHO对应一个或多个候选PCell是指该CHO为该一个或多个候选PCell切换为UE的PCell的触发条件。
例如，CHO配置信息用于配置CHO1(对应于候选PCell1)和CHO2(对应于候选PCell2)，CPAC配置信息用于配置CPAC1(对应于候选PSCell1)、CPAC2(对应于候选PSCell2)、CPAC3(对应于候选PSCell3)、CPAC4(对应于候选PSCell4)，CHO 1对应于CPAC1和CPAC2、CHO 2对应于CPAC3和CPAC4。应理解，一个CHO可对应一个或多个CPAC，因为一个PCell可对应一个或多个候选PSCell。
在配置CHO的同时，针对多个候选PCell，可以提供与候选PCell对应的PSCell的相关配置。这样如果一个候选PCcell触发了CHO，则UE就尝试接入目标PCell(即目标主小区)，并且该目标PCell下的PSCell也满足CPAC触发条件，UE便还尝试进行PSCell的变更(PCell的切换与PSCell的变更做随机接入可以是同时，也可以是一前一后进行)。
在一些实施方式中，UE在完成CHO的时候会向目标PCell发送RRC信令，该信令可包含满足CPAC触发条件的候选PSCell的小区信息(小区ID等)与测量信息(小区的信号强度信号质量等)，用于后续候选PSCell的添加或变更。
在一种可能的实现方式中，UE还可执行如下操作：UE向接入网设备2发送测量报告；测量报告用于接入网设备2更新CPAC的配置。测量报告是UE根据最近一次接收到的测量配置去决定的，可能既包括候选PSCell的测量结果，也包括邻区或其他小区的测量结果等。UE上报该测量报告的目的是为了让目标MN(即接入网设备2)更新CPAC配置，例如候选PSCell，切换阈值等。因为在MN初始向UE下发CHO配置信息和CPAC配置信息的时刻到CHO成功之间可能已经持续了比较长的一段时间，目标MN需要使用新的测量报告去更新CPAC的配置。举例来说，UE测量了所有的候选PSCell，但是都没有满足CPAC的触发条件，说明CPAC设置的触发条件太严格了，可以通过降低一些CPAC的触发阈值使得CAPC更容易触发，进而达到优化效果。又举例来说，接入网设备2在测量报告中发现一些邻区的信号质量较好例如高于预设阈值，可以把这些邻区加到CPAC配置中。又举例来说，接入网设备2根据测量报告，发现已经配置的candidate PSCell的小区的信号质量较差例如低于预设阈值，则可以删除这些candidate PSCell。UE在接入目标MN的时候直接给目标MN上报当前的测量报告，可以缩短目标MN配置CPAC的时间。当然，目标MN也可以根据测量报告去进行CPAC配置的优化。UE可以上报完整的测量报告给MN，也可以只上报与触发CHO的PCell下的PSCell相关的测量报告给MN。例如，测量报告包含与目标主小区对应的各候选主辅小区的目标参数；目标参数包括以下一项或多项：RSRP、RSRQ、SINR。目标参数可以为UE在判断是否满足CPAC触发条件时，测量得到。
本申请实施例中，UE在未触发CPAC的情况下，向接入网设备2发送指示信息2(以下称为指示信息2)，以便于接入网设备2确定UE未触发CPAC的原因。指示信息2可使得接入网设备2获知为何CPAC没有触发的更加详细的信息。
下面介绍指示信息2几种可能的实现方式。
在一种可能的实现方式中，指示信息22指示UE已测量全部与目标主小区对应的候选主辅小区，且与目标主小区对应的候选主辅小区均未满足CPAC触发条件。在该实现方式中，指示信息2是一种显式指示，该指示信息2可包含预先约定的一个字段，例如111。在该实现方式中，指示信息2可使得接入网设备2得知，UE未触发CPAC的原因在于，UE已测量全部与目标主小区对应的候选主辅小区，但是与该目标主小区对应的候选主辅小区均未满足CPAC触发条件。后续接入网设备2根据该指示信息2便可得知可能CPAC触发条件配置偏高，进而优化切换阈值。
在一种可能的实现方式中，指示信息2指示UE未测量到与目标主小区对应的候选主辅小区。在该实现方式中，指示信息2是一种显式指示，该指示信息2可包含预设的一个字段，例如000。在该实现方式中，指示信息2可使得接入网设备2得知，UE未触发CPAC的原因在于，UE未测量到与目标主小区对应的候选主辅小区。后续接入网设备2根据该指示信息2便可得知配置的candidate PSCell有问题，可能需要增加新的PSCell或者删除部分或全部已经配置的PSCell。
在一种可能的实现方式中，指示信息2指示UE已测量部分与目标主小区对应的候选主辅小区，且已被UE测量的候选主辅小区均未满足CPAC触发条件。在该实现方式中，指示信息2是一种显式指示，该指示信息2可包含预先约定的一个字段，例如010。在该实现方式中，指示信息2可使得接入网设备2得知，UE未触发CPAC的原因在于，UE已测量部分与目标主小区对应的候选主辅小区，但是已被该UE测量的候选主辅小区均未满足CPAC触发条件。后续接入网设备2根据该指示信息2可推测出可能CPAC触发条件配置偏高(例如切换阈值较高)，这样便可以优化切换阈值；也可能是UE还没测量完，可以不更新现有的配置。
在一种可能的实现方式中，指示信息2指示目标主小区对应的各候选主辅小区的测量情况以及已被UE测量的各候选主辅小区均未满足CPAC触发条件。例如，PCell下配置了4个候选的PSCell，PSCell 1/2/3/4，UE上报的指示信息2包括：{PSCell 1，已测量，不满足CPAC}，{PSCell 2，已测量，不满足CPAC}，{PSCell 3，已测量，不满足CPAC}，{PSCell4，已测量，不满足CPAC}。又例如，PCell下配置了4个候选的PSCell，PSCell 1/2/3/4，UE上报的指示信息2包括：{PSCell 1，未测量}，{PSCell 2，未测量}，{PSCell 3，未测量}，{PSCell 4，未测量}。又例如，PCell下配置了4个候选的PSCell，PSCell 1/2/3/4，UE上报的指示信息2包括：{PSCell 1，已测量，不满足CPAC}，{PSCell 2，已测量，不满足CPAC}，{PSCell 3，未测量}，{PSCell 4，未测量}。在该实现方式中，指示信息2可使得接入网设备2得知，目标主小区对应的各候选主辅小区的测量情况。
在一种可能的实现方式中，指示信息2指示与目标主小区对应的候选主辅小区中已被UE测量的候选主辅小区，且已被UE测量的候选主辅小区均未满足CPAC触发条件。在该实现方式中，UE通过指示信息2只上报被测量过的PSCell的相关信息，但上报的PSCell是网络侧为该PCell配置的所有的PSCell，并且上报的PSCell都显示不满足CPAC，一种隐式指示。例如，PCell下配置了4个候选的PSCell，PSCell 1/2/3/4，UE上报的指示信息2包括：{PSCell1，已测量，不满足CPAC}，{PSCell 2，已测量，不满足CPAC}，{PSCell 3，已测量，不满足CPAC}，{PSCell 4，已测量，不满足CPAC}，网络侧配置了4个PSCell，UE也上报了4个PSCell，隐式指示了所有的PSCell都测量过了，但是都不满足CPAC条件。又例如，PCell下配置了4个候选的PSCell，PSCell 1/2/3/4，但UE没有通过指示信息2上报与配置的4个候选小区相关的PSCell的信息，便隐式指示了所有的PSCell都测量过了，但是都不 满足CPAC条件。又例如，PCell下配置了4个候选的PSCell，PSCell 1/2/3/4，但UE上报的指示信息2包括：{PSCell 1，已测量，不满足CPAC}，{PSCell 2，已测量，不满足CPAC}，没有上报PSCell 3/4的相关信息，说明PSCell 3/4没有被测量。
图14为本申请实施例提供的另一种通信方法流程图。图14中的方法流程与图13中的方法流程相对应，图13描述的是UE执行的方法流程，图14描述的是接入网设备执行的方法流程。如图14所示，该方法包括：
1401、接入网设备2接收来自UE的指示信息2。
步骤1401与图13中的步骤1301相对应。
1402、接入网设备2根据指示信息2，确定UE未触发CPAC的原因。
在一种可能的实现方式中，UE还可执行如下操作：接入网设备2接收来自UE的测量报告；测量报告用于接入网设备2更新CPAC的配置。
本申请实施例中，接入网设备2根据指示信息2，确定UE未触发CPAC的原因，进而优化CPAC的配置。优化CPAC的配置可以包括删除、添加候选PSCell。指示信息2可使得接入网设备2获知为何CPAC没有触发的更加详细的信息。
图15为本申请实施例提供的另一种通信方法流程图。如图15所示，该方法包括：
1501、UE接入接入网设备2的目标主小区。
步骤1501可参阅步骤1301。
1502、UE在未触发CPAC的情况下，向接入网设备2发送测量报告。
测量报告用于接入网设备2更新CPAC的配置。图15中的测量报告为前述实施例中的测量报告相同。
本申请实施例中，UE在未触发CPAC的情况下，向接入网设备2发送测量报告，以便接入网设备2根据该测量报告，更新CPAC的配置。
图16为本申请实施例提供的另一种通信方法流程图。图16中的方法流程与图15中的方法流程相对应，图15描述的是UE执行的方法流程，图16描述的是接入网设备执行的方法流程。如图16所示，该方法包括：
1601、接入网设备2接收来自UE的测量报告。
步骤1601对应于步骤1501。
1602、接入网设备2根据测量报告，更新CPAC的配置。
步骤1602一种可能的实现方式如下：根据测量报告，更新目标主小区对应的各候选主辅小区或者CPAC的触发阈值(或者说切换阈值)。接入网设备2根据测量报告，更新CPAC的配置可以包括以下一项或多项：删除PSCell、添加候选PSCell、更新切换阈值。
在本申请实施例中，接入网设备2根据测量报告，更新CPAC的配置。通过更新CPAC的配置，以便更好地实现UE的主辅小区切换，提高UE的通信质量。
图17为本申请实施例提供的另一种通信方法流程图。图17中的方法流程为图13-14描述的方法。图17中，源基站可以是UE当前连接的主基站；候选基站1可以是上述接入网设备2。如图17所示，该方法包括：
1701、源基站向连接态的UE发送RRC重配置消息。
源基站可以是上述UE当前连接的接入网设备，连接态的UE可以是上述UE，RRC重配置消息可包含测量对象、报告配置、测量标识等参数。
1702、UE向源基站发送测量报告。
步骤1702一种可能的实现方式如下：UE根据RRC重配置消息对一系列小区进行测量后， 并将形成的测量报告上报给当前连接的源基站，例如当前服务小区的信号强度低于门限且目标小区信号高于门限。
1703、源基站向候选基站1发送CHO请求消息。
CHO请求(CHO request)消息用于发起切换流程。CHO请求可携带一些候选基站(例如候选基站1)为了准备切换的必要信息。
1704、候选基站1向源基站发送CHO请求确认消息。
CHO请求确认消息(CHO request ACK)用于通知源基站，候选基站1已准备好切换配置信息。源基站只需要把CHO请求确认消息中的RRC重配置消息直接转发给UE就好。CHO请求确认消息可包含已经准备好的UE能进行切换的信息。
1705、源基站向候选基站2发送CHO请求消息。
1706、候选基站2向源基站发送CHO请求确认消息。
图17中示出了源基站向候选基站1以及候选基站2发送CHO请求消息的操作、候选基站1向源基站发送CHO请求确认消息的操作以及候选基站2向源基站发送CHO请求确认消息的操作。应理解，源基站可以向一个或多个候选基站发送CHO请求消息，每个候选基站在接收到CHO请求消息可反馈CHO请求确认消息，本申请不限定源基站向多个候选基站发送CHO请求消息。
1707、源基站向UE发送CHO配置信息和CPAC配置信息。
源基站可发送一条消息承载CHO配置信息和CPAC配置信息，也可以发送多条消息承载CHO配置信息和CPAC配置信息。例如，源基站向UE发送一条消息以承载CHO配置信息，发送另一条消息以承载CPAC配置信息。CHO配置信息中可以包括CHO触发条件、一个或多个候选小区的信息(例如，候选小区的CGI，或者，候选小区的PCI以及候选小区对应的频率信息)。CPAC配置信息可以是任意候选基站发送给源基站的，也可以是候选PSCell对应的候选基站发送给源基站的，也可以通过其他的方式，本申请实施例不做限制。
在一些实施方式中，源基站给UE下发CHO配置信息时，可以下发与至少一个候选PCell中的小区组成DC的至少一个候选PSCell(s)的配置信息与触发条件(也就是CPAC配置信息)。
1708、UE判断CHO触发条件是否满足，并确定出目标小区。
目标小区为满足CHO触发条件的主小区。UE待切换至目标小区(候选基站1的小区)。UE可以在接收到CHO配置信息后，根据该CHO配置信息测量候选小区的小区质量是否满足CHO触发条件，将满足CHO触发条件的某候选小区作为目标小区。
1709、UE对候选基站1发起随机接入。
1710、UE向候选基站1发送CHO完成消息。
CHO完成(CHO complete)消息用于通知候选基站1，CHO完成。UE可以在随机接入成功完成后，向候选基站1发送CHO完成消息。
1711、UE在未触发CPAC的情况下，向候选基站1发送指示信息2。
指示信息2用于确定UE未触发CPAC的原因。
如果一个PCcell触发了CHO，则UE就尝试接入目标PCell(即目标小区)。若该PCell下的PSCell也满足CPAC触发条件，UE便还尝试进行PSCell的变更(PCell的切换与PSCell的变更做随机接入可以是同时，也可以是一前一后，不受限制)。若该PCell下的PSCell均未满足CPAC触发条件(即未触发CPAC)，则向候选基站1发送指示信息2。
1712、候选基站1根据指示信息2，确定UE未触发CPAC的原因。
候选基站1还可以根据指示信息2，根据CPAC的配置。
在一些实施方式中，UE在未触发CPAC的情况下，还可向候选基站1发送测量报告。测量报告用于接入网设备2更新CPAC的配置。
本申请实施例中，UE在未触发CPAC的情况下，向接入网设备2发送指示信息2，以便于接入网设备2确定UE未触发CPAC的原因。第一指示信息可使得接入网设备2获知为何CPAC没有触发的更加详细的信息。
图18示出了一种通信装置1800的结构示意图。该通信装置1800可以对应实现上述各个方法实施例中由接入网设备(例如第一接入网设备或第二接入网设备)实现的功能或者步骤。该通信装置可以包括处理模块1810和收发模块1820。可选的，还可以包括存储单元，该存储单元可以用于存储指令(代码或者程序)和/或数据。处理模块1810和收发模块1820可以与该存储单元耦合，例如，处理模块1810可以读取存储单元中的指令(代码或者程序)和/或数据，以实现相应的方法。上述各个单元可以独立设置，也可以部分或者全部集成。例如收发模块1820可包括发送模块和接收模块。
在一些可能的实施方式中，通信装置1800能够对应实现上述方法实施例中接入网设备1的行为和功能。例如通信装置1800可以为接入网设备1，也可以为应用于接入网设备1中的部件(例如芯片或者电路)。收发模块1820例如可以用于执行图4、图7、图8、图9、图10、图11或图12的实施例中由接入网设备1(图11和图12中的MN)所执行的全部接收或发送操作，例如图4所示的实施例中的步骤401和步骤402以及图7所示实施例中的步骤701、步骤702、步骤703，和/或用于支持本文所描述的技术的其它过程。处理模块1810用于执行图4、图7、图8、图9、图10、图11或图12的实施例中中由接入网设备1所执行的除了收发操作之外的全部操作。
在一些可能的实施方式中，通信装置1800能够对应实现上述方法实施例中第二接入网设备的行为和功能。例如通信装置1800可以为第二接入网设备，也可以为应用于第二接入网设备中的部件(例如芯片或者电路)。收发模块1820例如可以用于执行图4、图7、图8、图9、图10、图11或图12的实施例中由第二接入网设备(图11和图12中的S-ST)所执行的全部接收或发送操作，例如图4所示的实施例中的步骤401以及图7所示实施例中的步骤701、步骤702，和/或用于支持本文所描述的技术的其它过程。处理模块1810用于执行图4、图7、图8、图9、图10、图11或图12的实施例中中由第二接入网设备所执行的除了收发操作之外的全部操作。
在一些可能的实施方式中，通信装置1800能够对应实现上述方法实施例中终端设备的行为和功能。例如通信装置1800可以为终端设备，也可以为应用于终端设备中的部件(例如芯片或者电路)。收发模块1820例如可以用于执行图13、图14、图15、图16、图17的实施例中由终端设备(图17中的UE)所执行的全部接收或发送操作，例如图13所示的实施例中的步骤1302以及图14所示实施例中的步骤1401，和/或用于支持本文所描述的技术的其它过程。处理模块1810用于执行图13、图14、图15、图16、图17的实施例中中由终端设备所执行的除了收发操作之外的全部操作。
在一些可能的实施方式中，通信装置1800能够对应实现上述方法实施例中接入网设备2的行为和功能。例如通信装置1800可以为接入网设备2，也可以为应用于接入网设备2中的部件(例如芯片或者电路)。收发模块1820例如可以用于执行图13、图14、图15、图16、图17的实施例中由接入网设备2(图13中的第一接入网设备，图17中的候选基站1)所执行的全部接收或发送操作，例如图13所示的实施例中的步骤1302以及图14所示实施例中的步骤1401，和/或用于支持本文所描述的技术的其它过程。处理模块1810用于执行图13、图 14、图15、图16、图17的实施例中中由接入网设备2所执行的除了收发操作之外的全部操作。
图19为本申请实施例提供的另一种通信装置190的结构示意图。图19中的通信装置可以是上述终端设备。图19中的通信装置可以是上述接入网设备1。图19中的通信装置可以是上述接入网设备2。图19中的通信装置可以是上述第二接入网设备。
如图19所示，该通信装置190包括至少一个处理器1920和收发器1910。
在本申请的另一些实施例中，处理器1920和收发器1910可以用于执行上述接入网设备1执行的功能或操作等。处理器1920例如可执行如下一项多项操作：图11中的步骤1105、图12中的步骤1207。收发器1910例如可执行如下一项或多项操作：图4中的步骤401、步骤402，图7中的步骤701、步骤702、步骤703，图8中的步骤801、步骤802、步骤803，图9中的步骤901、步骤902、步骤903、步骤904，图10中的步骤1001、步骤1002、步骤1003，图11中的步骤1101、步骤1102、步骤1104、步骤1106、步骤1107、步骤1108、步骤1109、步骤1110、步骤1111、步骤1112，图12中的步骤1201、步骤1202、步骤1204、步骤1205、步骤1206、步骤1208、步骤1209、步骤1210。
在本申请的一些实施例中，处理器1920和收发器1910可以用于执行上述第二接入网设备执行的功能或操作等。收发器1910例如可执行如下一项或多项操作：图4中的步骤401，图7中的步骤701，图8中的步骤801，图9中的步骤901、步骤903，图10中的步骤1001，图11中的步骤1101、步骤1108、步骤1109、步骤1112，图12中的步骤1201、步骤1205、步骤1206、步骤1210。
在本申请的一些实施例中，处理器1920和收发器1910可以用于执行上述终端设备执行的功能或操作等。处理器1920例如可执行如下一项或多项操作：图13中的步骤1301、图15中的步骤1501、图17中的步骤1708、步骤1709。收发器1910可执行如下一项或多项操作：图13中的步骤1302，图14中的步骤1401，图15中的步骤1502，图16中的步骤1601，图17中的步骤1701、步骤1702、步骤1707、步骤1710、步骤1711。
在本申请的另一些实施例中，处理器1920和收发器1910可以用于执行上述接入网设备2执行的功能或操作等。处理器1920例如可执行图13中的步骤1301，图14中的步骤1402，图15中的步骤1501，图16中的步骤1602，图17中的步骤1709、步骤1712。收发器1910可执行如下一项或多项操作：图13中的步骤1302，图14中的步骤1401，图15中的步骤1502，图16中的步骤1601，图17中的步骤1703、步骤1704、步骤1710、步骤1711。
收发器1910用于通过传输介质和其他设备/装置进行通信。处理器1920利用收发器1910收发数据和/或信令，并用于实现上述方法实施例中的方法。处理器1920可实现处理模块1810的功能，收发器1910可实现收发模块1820的功能。
可选的，通信装置190还可以包括至少一个存储器1930，用于存储程序指令和/或数据。存储器1930和处理器1920耦合。本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。处理器1920可能和存储器1930协同操作。处理器1920可能执行存储器1930中存储的程序指令。该至少一个存储器中的至少一个可以包括于处理器中。
本申请实施例中不限定上述收发器1910、处理器1920以及存储器1930之间的具体连接介质。本申请实施例在图19中以存储器1930、处理器1920以及收发器1910之间通过总线1940连接，总线在图19中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。该总线可以分为地址总线、数据总线、控制总线等。为便于表示，图19中仅 用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
在本申请实施例中，处理器可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。
图20为本申请实施例提供的另一种通信装置200的结构示意图。如图20所示，图20所示的通信装置包括逻辑电路2001和接口2002。图18中的处理模块1810可以用逻辑电路2001实现，图18中的收发模块1820可以用接口2002实现。其中，该逻辑电路2001可以为芯片、处理电路、集成电路或片上系统(system on chip，SoC)芯片等，接口2002可以为通信接口、输入输出接口等。本申请实施例中，逻辑电路和接口还可以相互耦合。对于逻辑电路和接口的具体连接方式，本申请实施例不作限定。
在本申请的一些实施例中，该逻辑电路和接口可用于执行上述接入网设备1执行的功能或操作等。
在本申请的另一些实施例中，该逻辑电路和接口可用于执行上述第二接入网设备执行的功能或操作等。
在本申请的另一些实施例中，该逻辑电路和接口可用于执行上述终端设备执行的功能或操作等。
在本申请的一些实施例中，该逻辑电路和接口可用于执行上述接入网设备2执行的功能或操作等。
本申请还提供一种计算机可读存储介质，该计算机可读存储介质中存储有计算机代码，当计算机代码在计算机上运行时，使得计算机执行上述实施例的方法。
本申请还提供一种计算机程序产品，该计算机程序产品包括计算机代码或计算机程序，当该计算机代码或计算机程序在计算机上运行时，使得上述实施例中的认证鉴权方法被执行。
本申请还提供一种通信系统，包括终端设备、接入网设备1、第二接入网设备以及第三接入网设备。
本申请还提供一种通信系统，包括终端设备、接入网设备2。
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，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，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上述权利要求的保护范围为准。

Claims (60)

  1. 一种通信方法，其特征在于，包括：
    第一接入网设备接收来自第二接入网设备的第一指示信息；所述第一指示信息指示所述第一接入网设备在向所述第二接入网设备发送第一候选主辅小区信息之后或之前，发送第一重配置消息；所述第一候选主辅小区信息指示所述第二接入网设备请求第三接入网设备添加的候选主辅小区中，被所述第三接入网设备接受的一个或多个第一候选主辅小区；
    所述第一接入网设备根据所述第一指示信息，向终端设备发送所述第一重配置消息；所述第一重配置消息包含所述一个或多个第一候选主辅小区对应的配置信息。
  2. 根据权利要求1所述的方法，其特征在于，所述第一指示信息包含指示字段，
    所述指示字段指示所述第一接入网设备在向所述第二接入网设备发送所述第一候选主辅小区信息之后，发送所述第一重配置消息；以及，所述指示字段还指示所述第一接入网设备在向所述第二接入网设备发送第二候选主辅小区信息之后，发送第二重配置消息；所述第二候选主辅小区信息指示所述第二接入网设备请求第四接入网设备添加的候选主辅小区中，被所述第四接入网设备接受的一个或多个第二候选主辅小区；所述第二重配置消息包含所述一个或多个第二候选主辅小区对应的配置信息；或者，
    所述指示字段指示所述第一接入网设备在向所述第二接入网设备发送所述第一候选主辅小区信息之前，发送所述第一重配置消息；以及，所述指示字段还指示所述第一接入网设备在向所述第二接入网设备发送第二候选主辅小区信息之前，发送第二重配置消息；所述第二候选主辅小区信息指示所述第二接入网设备请求第四接入网设备添加的候选主辅小区中，被所述第四接入网设备接受的一个或多个第二候选主辅小区；所述第二重配置消息包含所述一个或多个第二候选主辅小区对应的配置信息。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第一指示信息包含所述第三接入网设备的标识和/或所述一个或多个第一候选主辅小区的标识。
  4. 根据权利要求2所述的方法，其特征在于，所述第一指示信息包含所述第三接入网设备的标识和/或所述一个或多个第一候选主辅小区的标识，以及，
    所述第一指示信息包含所述第四接入网设备的标识和/或所述一个或多个第二候选主辅小区的标识。
  5. 根据权利要求1所述的方法，其特征在于，所述第一指示信息包括第一字段以及第二字段，所述第一字段对应于所述第三接入网设备的标识和/或所述一个或多个第一候选主辅小区的标识，所述第二字段对应于第四接入网设备的标识和/或一个或多个第二候选主辅小区的标识；所述第一字段指示所述第一接入网设备在向所述第二接入网设备发送所述第一候选主辅小区信息之前或之后，发送所述第一重配置消息；所述第二字段指示所述第一接入网设备在向所述第二接入网设备发送第二候选主辅小区信息之前或之后，发送所述第二重配置消息；
    其中，所述第二候选主辅小区信息指示所述一个或多个第二候选主辅小区，所述一个或多个第二候选主辅小区为所述第二接入网设备请求所述第四接入网设备添加的候选主辅小区中，被所述第四接入网设备接受的一个或多个候选主辅小区；所述第二重配置消息包含所述一个或多个第二候选主辅小区对应的配置信息。
  6. 根据权利要求1所述的方法，其特征在于，所述第一指示信息包含第三字段，所述第三字段对应于所述一个或多个第一候选主辅小区的标识，以及，第四字段，所述第四字段对应于一个或多个第三候选主辅小区的标识，
    所述第三字段指示所述第一接入网设备在向所述第二接入网设备发送所述第一候选主辅小区信息之后，发送所述第一重配置消息；所述第四字段指示所述第一接入网设备在向所述第二接入网设备发送所述一个或多个第三候选主辅小区对应的第三候选主辅小区信息之前，发送所述一个或多个第三候选主辅小区对应的第三重配置消息；所述一个或多个第三候选主辅小区属于一个或多个接入网设备。
  7. 根据权利要求6所述的方法，其特征在于，所述第三字段还对应于一个或多个第四候选主辅小区的标识，所述第三字段还指示所述第一接入网设备在向所述第二接入网设备发送所述一个或多个第四候选主辅小区对应的第四候选主辅小区信息之后，发送所述一个或多个第四候选主辅小区对应的第四重配置消息；所述一个或多个第四候选主辅小区属于一个或多个接入网设备。
  8. 根据权利要求1所述的方法，其特征在于，所述第一指示信息包含第三字段，所述第三字段对应于所述一个或多个第一候选主辅小区的标识，以及，第四字段，所述第四字段对应于一个或多个第三候选主辅小区的标识，
    所述第三字段指示所述第一接入网设备在向所述第二接入网设备发送所述第一候选主辅小区信息之前，发送所述第一重配置消息；所述第四字段指示所述第一接入网设备在向所述第二接入网设备发送所述一个或多个第三候选主辅小区对应的第三候选主辅小区信息之后，发送所述一个或多个第三候选主辅小区对应的第三重配置消息；所述一个或多个第三候选主辅小区对应于一个或多个接入网设备。
  9. 根据权利要求8所述的方法，其特征在于，所述第三字段还对应于一个或多个第四候选主辅小区的标识，所述第三字段还指示所述第一接入网设备在向所述第二接入网设备发送所述一个或多个第四候选主辅小区对应的第四候选主辅小区信息之前，发送所述一个或多个第四候选主辅小区对应的第四重配置消息；所述一个或多个第四候选主辅小区属于一个或多个接入网设备。
  10. 根据权利要求1所述的方法，其特征在于，所述第一候选主辅小区信息指示所述第二接入网设备请求第三接入网设备添加的候选主辅小区中，被所述第三接入网设备接受的一个所述第一候选主辅小区；所述第一重配置消息包含所述一个第一候选主辅小区对应的配置信息；所述第一指示信息包含第五字段、所述第五字段对应于所述一个第一候选主辅小区的标识，所述第五字段指示所述第一接入网设备在向所述第二接入网设备发送所述第一候选主辅小区信息之前或之后，发送所述第一重配置消息。
  11. 根据权利要求6至9任一项所述的方法，其特征在于，所述第一指示信息还包含所述第三接入网设备的标识，所述一个或多个第一候选主辅小区的标识与所述第三接入网设备的标识相对应。
  12. 根据权利要求1至11任一项所述的方法，其特征在于，所述第一指示信息包含于辅 基站切换请求消息。
  13. 根据权利要求1至11任一项所述的方法，其特征在于，所述方法还包括：
    所述第一接入网设备在未接收到来自所述第二接入网设备的第二指示信息的情况下，根据接收到的所述第一指示信息，向所述终端设备发送第五重配置消息；所述第二指示信息指示所述第一接入网设备在向所述第二接入网设备发送第五候选主辅小区信息之后或之前，发送第五重配置消息；所述第五候选主辅小区信息指示所述第二接入网设备请求第五接入网设备添加的候选主辅小区中，被所述第五接入网设备接受的一个或多个第五候选主辅小区；所述第五重配置消息包括所述一个或多个第五候选主辅小区对应的配置信息。
  14. 一种通信方法，其特征在于，包括：
    第二接入网设备向第一接入网设备发送第一指示信息；所述第一指示信息指示所述第一接入网设备在向所述第二接入网设备发送第一候选主辅小区信息之后或之前，发送第一重配置消息；所述第一候选主辅小区信息指示所述第二接入网设备请求第三接入网设备添加的候选主辅小区中，被所述第三接入网设备接受的一个或多个第一候选主辅小区；
    所述第二接入网设备接收来自所述第一接入网设备的所述第一候选主辅小区信息。
  15. 根据权利要求14所述的方法，其特征在于，所述第一指示信息包含指示字段，
    所述指示字段指示所述第一接入网设备在向所述第二接入网设备发送所述第一候选主辅小区信息之后，发送所述第一重配置消息；以及，所述指示字段还指示所述第一接入网设备在向所述第二接入网设备发送第二候选主辅小区信息之后，发送第二重配置消息；所述第二候选主辅小区信息指示所述第二接入网设备请求第四接入网设备添加的候选主辅小区中，被所述第四接入网设备接受的一个或多个第二候选主辅小区；所述第二重配置消息包含所述一个或多个第二候选主辅小区对应的配置信息；或者，
    所述指示字段指示所述第一接入网设备在向所述第二接入网设备发送所述第一候选主辅小区信息之前，发送所述第一重配置消息；以及，所述指示字段还指示所述第一接入网设备在向所述第二接入网设备发送第二候选主辅小区信息之前，发送第二重配置消息；所述第二候选主辅小区信息指示所述第二接入网设备请求第四接入网设备添加的候选主辅小区中，被所述第四接入网设备接受的一个或多个第二候选主辅小区；所述第二重配置消息包含所述一个或多个第二候选主辅小区对应的配置信息。
  16. 根据权利要求14或15所述的方法，其特征在于，所述第一指示信息包含所述第三接入网设备的标识和/或所述一个或多个第一候选主辅小区的标识。
  17. 根据权利要求15所述的方法，其特征在于，所述第一指示信息包含所述第三接入网设备的标识和/或所述一个或多个第一候选主辅小区的标识，以及，
    所述第一指示信息包含所述第四接入网设备的标识和/或所述一个或多个第二候选主辅小区的标识。
  18. 根据权利要求14所述的方法，其特征在于，所述第一指示信息包括第一字段以及第二字段，所述第一字段对应于所述第三接入网设备的标识和/或所述一个或多个第一候选主辅 小区的标识，所述第二字段对应于第四接入网设备的标识和/或一个或多个第二候选主辅小区的标识；所述第一字段指示所述第一接入网设备在向所述第二接入网设备发送所述第一候选主辅小区信息之前或之后，发送所述第一重配置消息；所述第二字段指示所述第一接入网设备在向所述第二接入网设备发送第二候选主辅小区信息之前或之后，发送所述第二重配置消息，
    其中，所述第二候选主辅小区信息指示所述一个或多个第二候选主辅小区，所述一个或多个第二候选主辅小区为所述第二接入网设备请求所述第四接入网设备添加的候选主辅小区中，被所述第四接入网设备接受的一个或多个候选主辅小区；所述第二重配置消息包含所述一个或多个第二候选主辅小区对应的配置信息。
  19. 根据权利要求14所述的方法，其特征在于，所述第一指示信息包含第三字段，所述第三字段对应于所述一个或多个第一候选主辅小区的标识，以及，第四字段，所述第四字段对应于一个或多个第三候选主辅小区的标识，
    所述第三字段指示所述第一接入网设备在向所述第二接入网设备发送所述第一候选主辅小区信息之后，发送所述第一重配置消息；所述第四字段指示所述第一接入网设备在向所述第二接入网设备发送所述一个或多个第三候选主辅小区对应的第三候选主辅小区信息之前，发送所述一个或多个第三候选主辅小区对应的第三重配置消息；所述一个或多个第三候选主辅小区属于一个或多个接入网设备。
  20. 根据权利要求19所述的方法，其特征在于，所述第三字段还对应于一个或多个第四候选主辅小区的标识，所述第三字段还指示所述第一接入网设备在向所述第二接入网设备发送所述一个或多个第四候选主辅小区对应的第四候选主辅小区信息之后，发送所述一个或多个第四候选主辅小区对应的第四重配置消息；所述一个或多个第四候选主辅小区属于一个或多个接入网设备。
  21. 根据权利要求14所述的方法，其特征在于，所述第一指示信息包含第三字段、所述第三字段对应于所述一个或多个第一候选主辅小区的标识，以及，第四字段，所述第四字段对应于一个或多个第三候选主辅小区的标识；
    所述第三字段指示所述第一接入网设备在向所述第二接入网设备发送所述第一候选主辅小区信息之前，发送所述第一重配置消息；所述第四字段指示所述第一接入网设备在向所述第二接入网设备发送所述一个或多个第三候选主辅小区对应的第三候选主辅小区信息之后，发送所述一个或多个第三候选主辅小区对应的第三重配置消息；所述一个或多个第三候选主辅小区对应于一个或多个接入网设备。
  22. 根据权利要求21所述的方法，其特征在于，所所述第三字段还对应于一个或多个第四候选主辅小区的标识，所述第三字段还指示所述第一接入网设备在向所述第二接入网设备发送所述一个或多个第四候选主辅小区对应的第四候选主辅小区信息之前，发送所述一个或多个第四候选主辅小区对应的第四重配置消息；所述一个或多个第四候选主辅小区属于一个或多个接入网设备。
  23. 根据权利要求14所述的方法，其特征在于，所述第一候选主辅小区信息指示所述第 二接入网设备请求第三接入网设备添加的候选主辅小区中，被所述第三接入网设备接受的一个所述第一候选主辅小区；所述第一重配置消息包含所述一个第一候选主辅小区对应的配置信息；所述第一指示信息包含第五字段、所述第五字段对应于所述一个第一候选主辅小区的标识，所述第五字段指示所述第一接入网设备在向所述第二接入网设备发送所述第一候选主辅小区信息之前或之后，发送所述第一重配置消息。
  24. 根据权利要求19至21任一项所述的方法，其特征在于，所述第一指示信息还包含所述第三接入网设备的标识，所述一个或多个第一候选主辅小区的标识与所述第三接入网设备的标识相对应。
  25. 根据权利要求14至24任一项所述的方法，其特征在于，所述第一指示信息包含于辅基站切换请求消息。
  26. 一种通信装置，其特征在于，包括用于实现如权利要求1-25任一项所述方法的模块。
  27. 一种通信装置，其特征在于，包括：处理器和收发器；
    所述收发器，用于接收信号或者发送信号；所述处理器，用于执行存储器所存储的计算机执行指令，以使所述通信装置执行如权利要求1-25任一项所述的方法。
  28. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机程序，所述计算机程序包括程序指令，所述程序指令当被处理器执行时，使所述处理器执行权利要求1至25任意一项所述的方法。
  29. 一种通信方法，其特征在于，包括：
    终端设备接入第一接入网设备的目标主小区；
    所述终端设备在未触发条件主辅小区的增加和改变CPAC的情况下，向所述第一接入网设备发送第一指示信息，所述第一指示信息用于确定所述终端设备未触发CPAC的原因。
  30. 根据权利要求29所述的方法，其特征在于，所述方法还包括：所述终端设备向所述第一接入网设备发送测量报告；所述测量报告用于所述第一接入网设备更新CPAC的配置。
  31. 根据权利要求30所述的方法，其特征在于，所述测量报告与所述目标主小区对应的各候选主辅小区相关。
  32. 根据权利要求30所述的方法，其特征在于，所述测量报告包含与所述目标主小区对应的各候选主辅小区的目标参数；所述目标参数包括以下一项或多项：参考信号接收功率RSRP、参考信号接收质量RSRQ、信号干扰噪声比SINR。
  33. 根据权利要求32所述的方法，其特征在于，所述目标参数为所述终端设备在判断是否满足CPAC触发条件时，测量得到。
  34. 根据权利要求29至33任一项所述的方法，其特征在于，所述第一指示信息指示所述终端设备已测量全部与所述目标主小区对应的候选主辅小区，且与所述目标主小区对应的候选主辅小区均未满足CPAC触发条件。
  35. 根据权利要求29至33任一项所述的方法，其特征在于，所述第一指示信息指示所述终端设备未测量到与所述目标主小区对应的候选主辅小区。
  36. 根据权利要求29至33任一项所述的方法，其特征在于，所述第一指示信息指示所述终端设备已测量部分与所述目标主小区对应的候选主辅小区，且已被所述终端设备测量的候选主辅小区均未满足CPAC触发条件。
  37. 根据权利要求29至33任一项所述的方法，其特征在于，所述第一指示信息指示所述目标主小区对应的各候选主辅小区的测量情况以及已被所述终端设备测量的各候选主辅小区均未满足CPAC触发条件。
  38. 根据权利要求29至33任一项所述的方法，其特征在于，所述第一指示信息指示与所述目标主小区对应的候选主辅小区中已被所述终端设备测量的候选主辅小区，且已被所述终端设备测量的候选主辅小区均未满足CPAC触发条件。
  39. 一种通信方法，其特征在于，包括：
    第一接入网设备接收来自终端设备的第一指示信息；
    所述第一接入网设备根据所述第一指示信息，确定所述终端设备未触发CPAC的原因。
  40. 根据权利要求39所述的方法，其特征在于，所述第一接入网设备接收来自所述终端设备的测量报告；所述测量报告用于所述第一接入网设备更新CPAC的配置。
  41. 根据权利要求40所述的方法，其特征在于，所述测量报告与所述目标主小区对应的各候选主辅小区相关。
  42. 根据权利要求40所述的方法，其特征在于，所述测量报告包含与所述目标主小区对应的各候选主辅小区的目标参数；所述目标参数包括以下一项或多项：参考信号接收功率RSRP、参考信号接收质量RSRQ、信号干扰噪声比SINR。
  43. 根据权利要求42所述的方法，其特征在于，所述目标参数为所述终端设备在判断是否满足CPAC触发条件时，测量得到。
  44. 根据权利要求39至43任一项所述的方法，其特征在于，所述第一指示信息指示所述终端设备已测量全部与所述目标主小区对应的候选主辅小区，且与所述目标主小区对应的候选主辅小区均未满足CPAC触发条件。
  45. 根据权利要求39至43任一项所述的方法，其特征在于，所述第一指示信息指示所述 终端设备未测量到与所述目标主小区对应的候选主辅小区。
  46. 根据权利要求39至43任一项所述的方法，其特征在于，所述第一指示信息指示所述终端设备已测量部分与所述目标主小区对应的候选主辅小区，且已被所述终端设备测量的候选主辅小区均未满足CPAC触发条件。
  47. 根据权利要求39至43任一项所述的方法，其特征在于，所述第一指示信息指示所述目标主小区对应的各候选主辅小区的测量情况以及已被所述终端设备测量的各候选主辅小区均未满足CPAC触发条件。
  48. 根据权利要求39至43任一项所述的方法，其特征在于，所述第一指示信息指示与所述目标主小区对应的候选主辅小区中已被所述终端设备测量的候选主辅小区，且已被所述终端设备测量的候选主辅小区均未满足CPAC触发条件。
  49. 一种通信方法，其特征在于，包括：
    终端设备接入第一接入网设备的目标主小区；
    所述终端设备在未触发条件主辅小区的增加和改变CPAC的情况下，向所述第一接入网设备发送测量报告；所述测量报告用于所述第一接入网设备更新CPAC的配置。
  50. 根据权利要求49所述的方法，其特征在于，所述测量报告与所述目标主小区对应的各候选主辅小区相关。
  51. 根据权利要求49所述的方法，其特征在于，所述测量报告包含与所述目标主小区对应的各候选主辅小区的目标参数；所述目标参数包括以下一项或多项：参考信号接收功率RSRP、参考信号接收质量RSRQ、信号干扰噪声比SINR。
  52. 根据权利要求51所述的方法，其特征在于，所述目标参数为所述终端设备在判断是否满足CPAC触发条件时，测量得到。
  53. 一种通信方法，其特征在于，包括：
    第一接入网设备接收来自终端设备的测量报告；
    根据所述测量报告，更新CPAC的配置。
  54. 根据权利要求53所述的方法，其特征在于，所述测量报告包含与所述目标主小区对应的各候选主辅小区的目标参数；所述目标参数包括以下一项或多项：参考信号接收功率RSRP、参考信号接收质量RSRQ、信号干扰噪声比SINR。
  55. 根据权利要求54所述的方法，其特征在于，所述目标参数为所述终端设备在判断是否满足CPAC触发条件时，测量得到。
  56. 根据权利要求53至55任一项所述的方法，其特征在于，所述根据所述测量报告，更 新CPAC的配置包括：根据所述测量报告，更新所述目标主小区对应的各候选主辅小区或者CPAC的触发阈值。
  57. 一种通信装置，其特征在于，包括用于实现如权利要求29-38任一项所述方法的模块，或者，包括用于实现如权利要求39-48任一项所述方法的模块，或者，包括用于实现如权利要求49-52任一项所述方法的模块，或者，包括用于实现如权利要求53-56任一项所述方法的模块。
  58. 一种通信装置，其特征在于，包括：处理器和收发器；
    所述收发器，用于接收信号或者发送信号；所述处理器，用于执行存储器所存储的计算机执行指令，以使所述通信装置执行如权利要求29-38任一项所述的方法，或者，以使所述通信装置执行如权利要求39-48任一项所述的方法，或者，以使所述通信装置执行如权利要求49-52任一项所述的方法，或者，以使所述通信装置执行如权利要求53-56任一项所述的方法。
  59. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有计算机程序，所述计算机程序包括程序指令，所述程序指令当被处理器执行时，使所述处理器执行权利要求29至38任意一项所述的方法，或者，使所述处理器执行权利要求39至48任意一项所述的方法，或者，使所述处理器执行权利要求49至52任意一项所述的方法，或者，使所述处理器执行权利要求53至56任意一项所述的方法。
  60. 一种通信系统，其特征在于，包括用于实现如权利要求1-13任一项所述方法的通信装置，以及用于实现如权利要求14-25任一项所述方法的通信装置，或者，包括用于实现如权利要求29-38任一项所述方法的通信装置，以及用于实现如权利要求39-48任一项所述方法的通信装置，或者，包括用于实现如权利要求49-52任一项所述方法的通信装置，以及用于实现如权利要求53-56任一项所述方法的通信装置。
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