WO2022040873A1 - 一种通信方法、设备和装置 - Google Patents

一种通信方法、设备和装置 Download PDF

Info

Publication number
WO2022040873A1
WO2022040873A1 PCT/CN2020/110861 CN2020110861W WO2022040873A1 WO 2022040873 A1 WO2022040873 A1 WO 2022040873A1 CN 2020110861 W CN2020110861 W CN 2020110861W WO 2022040873 A1 WO2022040873 A1 WO 2022040873A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
source
terminal device
time period
information
Prior art date
Application number
PCT/CN2020/110861
Other languages
English (en)
French (fr)
Inventor
严乐
耿婷婷
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2020/110861 priority Critical patent/WO2022040873A1/zh
Priority to CN202080103490.1A priority patent/CN116057998A/zh
Publication of WO2022040873A1 publication Critical patent/WO2022040873A1/zh
Priority to US18/174,117 priority patent/US20230217327A1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0079—Transmission or use of information for re-establishing the radio link in case of hand-off failure or rejection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/19—Connection re-establishment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/305—Handover due to radio link failure

Definitions

  • the present application relates to the field of wireless communication technologies, and in particular, to a communication method, device and apparatus.
  • conditional primary secondary cell (PSCell, PSCell) change conditional PSCell change, CPC
  • network equipment such as the network equipment to which the source primary cell belongs, or the network equipment to which the source primary and secondary cells belong, can provide user equipment (UE) with a radio resource control (RRC) reconfiguration message.
  • RRC radio resource control
  • CPC configuration information corresponding to one or more candidate target PSCells.
  • the UE may determine whether the candidate PSCell satisfies the primary and secondary cell change execution conditions, and uses the PSCell that satisfies the primary and secondary cell change execution conditions as the target PSCell.
  • the handover of the target PSCell in the above CPC mechanism may fail or succeed.
  • the network equipment to which the source primary cell belongs or the network equipment to which the source primary and secondary cells belong may experience radio link failure.
  • the network needs to minimize and avoid PSCell handover failures and radio link failures in the CPC mechanism to improve the reliability of SN changes.
  • the present application provides a communication method, device and apparatus for improving the reliability of SN change.
  • an embodiment of the present application provides a communication method.
  • the method may be executed by a terminal device, or a chip with similar functions of the terminal device.
  • the terminal device may receive the first configuration information.
  • the first configuration information here may include information of at least one candidate target primary and secondary cell and corresponding primary and secondary cell change execution condition information.
  • the first configuration information may include information such as a physical cell identifier (Physical Cell Identifier, PCI), a global cell identifier (cell global identifier, CGI), and a frequency of the candidate target primary and secondary cells.
  • PCI Physical Cell Identifier
  • CGI cell global identifier
  • RLF radio link failure
  • the first message may include first time period information.
  • the first time period information here may include at least one of the following: time period information between when the terminal device receives the first configuration information and when a radio link failure occurs in the source MCG or the source SCG ; information on the time period between when the source MCG or the source SCG starts to generate RLF and when the terminal device sends the first message.
  • the terminal device after the terminal device receives the first configuration information, if RLF occurs in the source SCG or the source MCG, the terminal device can record the first time period information and report the first time period information, so that the network device can report the information according to the terminal device. information, and exchange reasonable and effective information between network devices, thereby enabling network devices to optimize parameters.
  • the first message is sent when RLF occurs in the source MCG or the source SCG, and the terminal device determines that the first cell does not exist or cannot be determined according to the above-mentioned first configuration information.
  • the terminal device can send the first message, so that the network device can, according to the information reported by the terminal device, Reasonable and effective information is exchanged between devices, so that network devices can optimize parameters.
  • the terminal device may determine the first cell according to the first configuration information, and may also initiate access to the first cell. If the terminal device successfully accesses the first cell, the first time period information may further include at least one of the following: the time period information between when the source SCG starts RLF and when the terminal device determines the first cell; The device determines the time period information between the start of the first cell and the terminal device successfully accessing the first cell; the time period information between the terminal device successfully starting the first cell and the terminal device sending the first message.
  • the first time period information may further include at least one of the following: from the occurrence of RLF on the source SCG until the terminal device determines that the time period information between the first cell; the terminal equipment determines the time period information between the start of the first cell and the failure of the terminal equipment to access the first cell; the terminal equipment and the Time period information between when the first cell fails to access and when the terminal device sends the first message. If the terminal equipment fails to access the first cell and the source MCG has RLF, the first time period information may further include at least one of the following: from the occurrence of RLF on the source SCG until the terminal equipment determines the first time period.
  • Time period information between a cell the terminal device determines the time period information between the start of the first cell and the occurrence of RLF in the source MCG; the occurrence of RLF in the source MCG until the terminal device and the RLF occur Time period information between the first cell access failure; time period information between the start of the terminal device and the first cell access failure to the terminal device sending the first message.
  • the first time period information may further include at least one of the following: from the occurrence of RLF on the source SCG until the terminal device determines the location the time period information between the first cell; the terminal device determines the time period information between the start of the first cell and the failure of the terminal device and the first cell to access; the terminal device and the information about the time period between when the first cell fails to access and when the source MCG generates RLF;
  • the terminal device can also determine the first cell according to the first configuration information, and initiate access to the first cell.
  • the terminal device can send different information after successfully accessing the first cell, failing to access the first cell and no RLF occurs in the source MCG, failing to access the first cell and RLF occurring in the source MCG, etc.
  • the network device can optimize parameters according to the information reported by the terminal device.
  • the first time period information may further include at least one of the following: the terminal device Time period information between the start of receiving the first configuration information and the terminal device determining the first cell; the terminal device determining the start of the first cell to the source MCG or the source SCG Time period information between RLF occurrences.
  • the terminal device can report the time period information and/or the time period between when the first configuration information is received and the first cell is determined.
  • the time period information from the first cell to the source MCG or the source SCG where RLF occurs is determined, so that the network device can perform parameter optimization according to the information reported by the terminal device.
  • the first time period information may further include the following: At least one of: information on the time period between the occurrence of RLF in the source MCG or the source SCG and the time when the terminal device accesses the first cell; the time from when the terminal device accesses the first cell to The time between sending the first message by the terminal device.
  • the terminal device can report the occurrence of RLF in the source MCG or the source SCG until the first cell is accessed.
  • the first time period information may further include at least one of the following: information on the time period between when the source MCG starts RLF and when the terminal equipment fails to access the first cell; the terminal Time period information between when the device fails to access the first cell and when the terminal device sends the first message.
  • the first time period information may further include at least one of the following: a period between the occurrence of RLF on the source MCG and the occurrence of RLF on the source SCG Time period information; time period information between the occurrence of RLF in the source SCG and the failure of accessing the terminal device and the first cell; the failure of accessing the terminal device and the first cell to the terminal
  • the device sends time period information between the first messages.
  • the first time period information may include at least one of the following: from the start of the RLF occurrence of the source MCG until the terminal equipment and the Time period information between a cell access failure; time period information between the terminal equipment and the first cell access failure to the occurrence of RLF in the source SCG; the occurrence of RLF in the source SCG to the The terminal device sends time period information between the first messages.
  • the terminal device determines the first cell before RLF occurs in the source MCG, the terminal device can fail to access the first cell and the source SCG does not have RLF, fail to access the first cell and RLF occurs in the source SCG, etc. different information is reported, so that the network device can perform parameter optimization according to the reported information.
  • the first time period information also It may include at least one of the following: information on the time period between the occurrence of RLF in the source SCG and the failure of the terminal device to access the first cell; the failure of the terminal device to access the first cell Time period information between the start and the terminal device sending the first message.
  • the first time period information may further include at least one of the following: from the start of the RLF occurrence of the source SCG to the time from the occurrence of the RLF to the source MCG time period information between the source MCG occurrence of RLF and the terminal equipment and the first cell access failure information; the terminal equipment and the first cell access failure start to all
  • the terminal device sends the time period information between the first messages.
  • the first time period information may further include at least one of the following: from the start of the RLF occurrence of the source SCG until the terminal device and the source MCG have RLF.
  • the terminal device sends time period information between the first messages.
  • the terminal device determines the first cell before the RLF occurs in the source SCG, the terminal device can fail to access the first cell and the source MCG does not have RLF, and the terminal device fails to access the first cell and the source MCG fails.
  • RLF different information is reported, so that the network device can optimize parameters according to the information reported by the terminal device.
  • the first time period information may further include at least one of the following: the terminal device receives Time period information from the start of the first configuration information to the terminal device determining the first cell; the terminal device determining the start of the first cell to the terminal device successfully accessing the first cell. Time period information between a cell; time period information between when the terminal device successfully accesses the first cell and when the source MCG or the source SCG generates RLF.
  • the terminal device can report the first message after successfully accessing the first cell, so that reasonable and effective information can be exchanged between the terminal devices, thereby enabling the network device to perform parameter optimization.
  • the terminal device may also send the first indication information.
  • the first indication information indicates that the source MCG generates RLF or the source SCG generates RLF.
  • the terminal device can indicate to the network device that the source SCG generates RLF or the source MCG generates RLF through the first indication information, so that the network device can perform parameter optimization.
  • the first message may further include at least one of the following: cell information of the source primary cell, cell information of the source primary secondary cell, and the at least one candidate target primary secondary cell cell information, indication information that the terminal device has received the first configuration information, indication information that the terminal device has determined the first cell or has not determined the first cell, and the terminal device has successfully connected access to the first cell or the indication information of failure to access the first cell.
  • the terminal device can also report the cell information of the source primary cell, the cell information of the source primary and secondary cells, and the cell information of at least one candidate target primary and secondary cells to the network device, so that the network device can know the cell information, and then respond to the corresponding
  • the mobility parameters corresponding to the cell are optimized.
  • the terminal device may also send second indication information.
  • the terminal device may also receive a request message in response to the second indication information.
  • the request message requests the terminal device to send the first message.
  • the terminal device may send the first message according to the request message.
  • the terminal device can record the first message, and report the first message when the network device requests the first message.
  • a communication method may be performed by a network device or a chip with functions similar to the network device.
  • the first network device may receive the first message sent by the terminal device.
  • the first message may include first time period information of the terminal device; the first time period information includes at least one of the following: starting from the terminal device receiving the first configuration information to the source Time period information between the occurrence of radio link failure in the MCG or the source SCG; time period information between the occurrence of RLF in the source MCG or the source SCG and the time when the terminal device sends the first message.
  • the first network device may send the second message to the second network device.
  • the second message may include part or all of the first message.
  • the first network device is a network device that manages the source primary cell
  • the second network device is a network device that manages the source primary and secondary cells
  • the first network device is a network device that manages the source primary cell
  • the second network device is a network device that manages at least one candidate target primary and secondary cells
  • the first network device is a network device that manages the source primary and secondary cells
  • the second network device is the management source primary and secondary cells.
  • the first network device is a network device that manages the source primary and secondary cells
  • the second network device is a network device that manages at least one candidate target primary and secondary cells
  • the first network The device is a network device that provides communication for the terminal device
  • the second network device is a network device that manages the source primary cell
  • the first network device is a network device that provides communication for the terminal device
  • the The second network device is a network device that manages the source primary and secondary cells
  • the first network device is a network device that provides communication for the terminal device
  • the second network device is a network device that manages at least one candidate target primary and secondary cells network equipment
  • the at least one candidate target primary and secondary cells is configured for the terminal equipment by the network equipment that manages the source primary cell of the terminal equipment.
  • network devices can exchange part or all of the first message, and further optimize mobility parameters, for example, optimize CPC-related parameters (for example, optimize all the candidate target primary and secondary cells included in the first configuration information).
  • the corresponding parameters can change the information of the candidate target primary and secondary cells, and/or change the primary and secondary cell change execution condition information; or, can delete the candidate target primary and secondary cells contained in the first configuration information, and /or, adding another cell as the candidate target primary and secondary cells) to improve the reliability of the terminal equipment to change the SN.
  • the second message may further include the first information.
  • the first information indicates that a late CPC occurred.
  • the late CPC here may mean that the network device sends the first configuration information to the terminal device too late.
  • the network device can determine that a late CPC has occurred according to the second message, and further optimize the mobility parameters, thereby improving the reliability of the terminal device changing the SN.
  • the first network device may determine, according to the first time period information, that RLF occurs in the source SCG or the source MCG.
  • the first network device may release the source SCG and/or the source MCG, or the first network device may change the SCG and/or the MCG, or the first network device may retain the source SCG and/or the source MCG does not change.
  • the first network device here may be a network device that manages the source primary cell.
  • the first network device can also determine that RLF occurs in the source SCG or the source MCG according to the information reported by the terminal device, so the source SCG or the source MCG can be released, or the SCG or the MCG can be changed, or the source SCG or the source MCG can be kept, Improve system reliability.
  • the first network device may also receive the second indication information sent by the terminal device.
  • the first network device may send a request message to the terminal device in response to the second indication information.
  • the request message here requests the first message.
  • the first network device may receive the first message sent by the terminal device.
  • the first network device can determine that the terminal device has recorded the first message according to the second indication information, and can request the terminal device to report the first message.
  • an embodiment of the present application further provides a communication method.
  • the method may be performed by the second network device, or by a chip with similar functions to the second network device.
  • the second network device may receive the second message sent by the first network device.
  • the second message may include the first time period information of the terminal device.
  • the first time period information here may include at least one of the following: time period information between when the terminal device receives the first configuration information and when a radio link failure occurs in the source MCG or the source SCG ; information on the time period between when the source MCG or the source SCG starts to generate RLF and when the terminal device sends the first message.
  • the second network device may also send a third message to the third network device.
  • the third message contains part or all of the second message.
  • the first network device is a network device that provides communication for the terminal device; the second network device is a network device that manages the at least one candidate target primary and secondary cells, and the third network device is a management office The network device of the source primary cell or the network device that manages the source primary and secondary cells.
  • part or all of the second message can be exchanged between network devices to further optimize mobility parameters, for example, optimize CPC-related parameters (for example, optimize the location of the candidate target primary and secondary cells included in the first configuration information).
  • the corresponding parameters can change the information of the candidate target primary and secondary cells, and/or change the primary and secondary cell change execution condition information; or, can delete the candidate target primary and secondary cells contained in the first configuration information, and /or, adding another cell as the candidate target primary and secondary cells) to improve the reliability of the terminal equipment to change the SN.
  • the third message may include first information, where the first information indicates that a late CPC occurs.
  • the network device can determine that a late CPC has occurred according to the third message, and then optimize the mobility parameters to improve the reliability of the terminal device changing the SN.
  • a communication apparatus may include various modules/units for executing the first aspect or any possible implementation manner of the first aspect, or may further include a communication device for executing the second aspect or the second aspect Each module/unit in any of the possible implementations may also include various modules/units for performing the third aspect or any of the possible implementations of the third aspect.
  • the communication device may be a terminal or a chip for a terminal.
  • a communication apparatus in a fifth aspect, includes a processor and a memory.
  • the memory is used to store computer-executed instructions, and when the controller is running, the processor executes the computer-executed instructions in the memory to utilize hardware resources in the controller to perform the operation steps of the method in the first aspect or any possible implementation manner of the first aspect, Alternatively, the operation steps of the method in the second aspect or any possible implementation manner of the second aspect are performed, or the operation steps of the method in the third aspect or any possible implementation manner of the third aspect are performed.
  • the communication apparatus may be a network device or a chip for a network device, and the network device may be a base station.
  • the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, when the computer-readable storage medium runs on a computer, the computer executes the methods of the above aspects.
  • the present application provides a computer program product storing instructions that, when executed on a computer, cause the computer to perform the methods of the above aspects.
  • FIG. 1 provides a communication system according to an embodiment of the present application
  • FIG. 2 is one of the exemplary flowcharts of the communication method provided by the embodiment of the present application.
  • FIG. 3 is one of the schematic diagrams of the first time period information provided by the embodiment of the present application.
  • FIG. 4 is one of the exemplary flowcharts of the communication method provided by the embodiment of the present application.
  • FIG. 5 is one of the schematic diagrams of the first time period information provided by the embodiment of the present application.
  • FIG. 6 is one of the schematic diagrams of the first time period information provided by the embodiment of the present application.
  • FIG. 7 is one of the schematic diagrams of the first time period information provided by the embodiment of the present application.
  • FIG. 8 is one of schematic diagrams of first time period information provided by an embodiment of the present application.
  • FIG. 9 is one of the exemplary flowcharts of the communication method provided by the embodiment of the present application.
  • FIG. 10 is one of the schematic diagrams of the first time period information provided by the embodiment of the present application.
  • FIG. 11 is one of schematic diagrams of first time period information provided by an embodiment of the present application.
  • FIG. 12 is one of the exemplary flowcharts of the communication method provided by the embodiment of the present application.
  • FIG. 13 is one of the schematic diagrams of the first time period information provided by the embodiment of the present application.
  • FIG. 14 is one of the schematic diagrams of the first time period information provided by the embodiment of the present application.
  • FIG. 15 is one of the schematic diagrams of the first time period information provided by the embodiment of the present application.
  • FIG. 16 is one of the exemplary flowcharts of the communication method provided by the embodiment of the present application.
  • FIG. 17 is one of the schematic diagrams of the first time period information provided by the embodiment of the present application.
  • FIG. 18 is one of the schematic diagrams of the first time period information provided by the embodiment of the present application.
  • FIG. 19 is one of the schematic diagrams of the first time period information provided by the embodiment of the present application.
  • FIG. 20 is one of the exemplary flowcharts of the communication method provided by the embodiment of the present application.
  • FIG. 21 is one of schematic diagrams of first time period information provided by an embodiment of the present application.
  • FIG. 22 is one of the exemplary flowcharts of the communication method provided by the embodiment of the present application.
  • FIG. 23 is one of schematic diagrams of a terminal device provided by an embodiment of the present application.
  • FIG. 24 is one of schematic diagrams of a terminal device provided by an embodiment of the present application.
  • FIG. 25 is one of schematic diagrams of a network device provided by an embodiment of the present application.
  • FIG. 26 is a block diagram of a communication apparatus provided by an embodiment of the present application.
  • a cell refers to an area covered by a network device or a part of a network device in a mobile communication system.
  • One network device here may be referred to as a network device managing a cell.
  • CPC Conditional PSCell change
  • system and “network” in the embodiments of this application may be used interchangeably.
  • “Plurality” means two or more, and other quantifiers are similar.
  • “And/or” describes the association relationship between associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone.
  • occurrences of the singular forms “a”, “an” and “the” do not mean “one or only one” unless the context clearly dictates otherwise, but rather “one or more” in one".
  • a device means to one or more such devices.
  • at least one (at least one of). «" means one or any combination of subsequent associated objects, for example "at least one of A, B and C” includes A, B, C, AB, AC, BC, or ABC.
  • LTE long term evolution
  • WiMAX worldwide interoperability for microwave access
  • 5G fifth generation
  • NR new generation radio access technology
  • 6G systems future communication systems, such as 6G systems.
  • the network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application.
  • the evolution of the architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
  • the embodiments of the present application can be applied not only to traditional typical networks, but also to future UE-centric (UE-centric) networks.
  • the UE-centric network introduces a non-cell network architecture, that is, deploying a large number of small stations in a specific area to form a hyper cell, and each small station is a transmission point of the Hyper cell ( Transmission Point, TP) or Transmission and Reception Point (TRP), and is connected to a centralized controller (controller).
  • the network side equipment selects a new sub-cluster (sub-cluster) for the UE from time to time to serve it, thereby avoiding real cell handover and realizing the continuity of UE services.
  • the network side equipment includes wireless network equipment.
  • multiple network-side devices such as small stations, may have independent controllers, such as distributed controllers. The existence of interaction information enables certain flexibility in providing cooperative services for UEs.
  • different base stations may be base stations with different identities, or may be base stations with the same identity that are deployed in different geographic locations. Before the base station is deployed, the base station does not know whether it will involve the application scenarios of the embodiments of the present application. Therefore, the base station, or the baseband chip, should support the methods provided by the embodiments of the present application before deployment. It can be understood that, the aforementioned base stations with different identifiers may be base station identifiers, cell identifiers or other identifiers.
  • the technical solutions provided in the embodiments of the present application can be applied to wireless communication between communication devices.
  • the wireless communication between communication devices may include: wireless communication between a network device and a terminal device, wireless communication between a network device and a network device, and wireless communication between a terminal device and a terminal device.
  • wireless communication may also be referred to as “communication” for short, and the term “communication” may also be described as "data transmission", “information transmission” or “transmission”.
  • FIG. 1 shows a schematic diagram of a communication system applicable to the communication method of the embodiment of the present application.
  • the communication system 100 includes a first network device 102 , a second network device 104 , a third network device 106 , and a terminal device 101 .
  • the first network device 102, the second network device 104 and the third network device 106 may be configured with multiple antennas, and the terminal device may also be configured with multiple antennas.
  • the communication system may further include a terminal device 103 (not shown in the figure).
  • the first network device 102 can be a network device that manages the source MCG of the terminal device 101
  • the second network device 104 can be a network device that manages the source SCG of the terminal device
  • the third network device 106 can be a network device that manages the source MCG of the terminal device 101.
  • the first network device 102 or the second network device 104 may configure the target primary and secondary cells for the terminal device 101 through the first configuration information.
  • the first configuration information may include at least one candidate target primary and secondary cell information and corresponding primary and secondary cell change execution condition information.
  • the terminal device 101 may determine, according to the first configuration information, the first cell that satisfies the conditions for performing the change of the primary and secondary cells. Wherein, the first cell belongs to the aforementioned third network device 106 .
  • the terminal device may initiate access to the third network device 106 .
  • the access between the terminal device 101 and the third network device 106 may fail or succeed.
  • the terminal device may report the first message to the first network device 102 , the second network device 104 or the third network device 106 .
  • the first network device 102 , the second network device 104 and the third network device 106 can exchange reasonable and effective information to perform parameter optimization, thereby improving the reliability of the terminal device 101 to change the SN.
  • the terminal devices involved in this application include devices that provide users with voice and/or data connectivity, specifically, include devices that provide users with voice, or include devices that provide users with data connectivity, or include devices that provide users with voice and/or data connectivity.
  • device for data connectivity For example, it may include a handheld device with wireless connectivity, or a processing device connected to a wireless modem.
  • the terminal can communicate with the core network via a radio access network (RAN), exchange voice or data with the RAN, or exchange voice and data with the RAN.
  • RAN radio access network
  • the terminal may include user equipment (UE), wireless terminal, mobile terminal, device-to-device (D2D) terminal, vehicle-to-everything (V2X) terminal, machine-to-machine/ Machine-to-machine/machine-type communications (M2M/MTC) terminal, Internet of things (IoT) terminal, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station) station), remote station (remote station), access point (access point, AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), or User device, etc.
  • UE user equipment
  • D2D device-to-device
  • V2X vehicle-to-everything
  • M2M/MTC machine-to-machine/ Machine-to-machine/machine-type communications
  • IoT Internet of things
  • subscriber unit subscriber unit
  • subscriber station subscriber station
  • mobile station mobile station
  • remote station remote station
  • access point access point
  • a mobile phone or "cellular" phone
  • a computer with a mobile terminal
  • a portable, pocket-sized, hand-held, computer-embedded mobile device and the like.
  • PCS personal communication service
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistants
  • constrained devices such as devices with lower power consumption, or devices with limited storage capacity, or devices with limited computing power, etc.
  • information sensing devices such as barcodes, radio frequency identification (RFID) devices, sensors, global positioning systems (GPS), and laser scanners are included.
  • RFID radio frequency identification
  • GPS global positioning systems
  • the terminal may also be a wearable device.
  • Wearable devices can also be called wearable smart devices or smart wearable devices, etc. It is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. Wait.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones.
  • Use such as all kinds of smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.
  • the various terminals described above if located on the vehicle (eg, placed in the vehicle or installed in the vehicle), can be considered as vehicle-mounted terminals, and the vehicle-mounted terminal is also called an on-board unit (OBU), for example.
  • OBU on-board unit
  • a device for implementing a function of a terminal may be a terminal, or a device capable of supporting the terminal to implement the function, such as a chip system, and the device may be installed in the terminal.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the network equipment involved in this application includes access network (AN) equipment, such as a base station (for example, an access point), which may refer to an access network communicating with a wireless terminal through one or more cells over an air interface or, for example, a network device in a vehicle-to-everything (V2X) technology is a roadside unit (RSU).
  • the base station may be used to convert received air frames to and from IP packets, acting as a router between the terminal and the rest of the access network, which may include the IP network.
  • the RSU can be a fixed infrastructure entity supporting V2X applications and can exchange messages with other entities supporting V2X applications.
  • the network device can also coordinate the attribute management of the air interface.
  • the network equipment may include a long term evolution (long term evolution, LTE) system or an evolved base station (NodeB or eNB or e-NodeB, evolved Node B) in long term evolution-advanced (LTE-A), Alternatively, it may also include the next generation node B (next generation node) in the evolved packet core network (evolved packet core, EPC), the fifth generation mobile communication technology (the 5th generation, 5G), and the new radio (new radio, NR) system B, gNB) or may also include a centralized unit (centralized unit, CU) and a distributed unit (distributed unit, DU) in a cloud radio access network (cloud radio access network, Cloud RAN) system, the embodiment of the present application does not limited.
  • LTE long term evolution
  • LTE-A long term evolution-advanced
  • the network equipment may also include core network equipment, and the core network equipment includes, for example, an access and mobility management function (AMF) and the like.
  • AMF access and mobility management function
  • the apparatus for implementing the function of the network device may be the network device, or may be an apparatus capable of supporting the network device to implement the function, such as a chip system, and the apparatus may be installed in the network device.
  • the technical solutions provided by the embodiments of the present application are described by taking the device for realizing the function of the network device being a network device as an example.
  • MR-DC multiple radio dual connectivity
  • DC refers to supporting two base stations to provide data transmission services for one terminal device at the same time.
  • the base station where the PCell is located is called the primary base station
  • the base station where the primary secondary cell (PSCell) is located is called the secondary base station.
  • MR-DC includes EN-DC, NE-DC, NGEN-DC and other architectures.
  • the EN-DC here uses the LTE base station as the primary base station and the NR base station as the secondary base station for dual connection, and the primary and secondary base stations are both connected to the 4G core network (evolved packet core, EPC).
  • EPC evolved packet core
  • NE-DC uses the NR base station as the main base station and the LTE base station as the secondary base station for dual connection, and both the primary base station and the secondary base station are connected to the 5G core network architecture.
  • NGEN-DC uses the LTE base station as the primary base station and the NR base station as the secondary base station for dual-connection architecture.
  • both the primary base station and the secondary base station are connected to the 5G core network.
  • the network device in the communication system may correspond to the first network device 102, the second network device 104 or the third network device 106 shown in FIG. 1
  • the terminal device may correspond to the terminal device 101 shown in FIG. 1 .
  • the terminal device 101 may be connected to the first network device 102 and the second network device 104, the first network device 102 may be the primary base station, and the second network device 104 may be the secondary base station.
  • Multiple serving cells in the first network device 102 form a master cell group (master cell group, MCG), and multiple serving cells in the second network device 104 form a secondary cell group (secondary cell group, SCG).
  • MCG master cell group
  • SCG secondary cell group
  • the terminal device may be a terminal device in a wireless communication system that has a wireless connection relationship with the network device. It can be understood that, the network device can communicate with multiple terminal devices in the wireless communication system that have a wireless connection relationship based on the same technical solution. This application does not limit this.
  • FIG. 2 is an exemplary flowchart of a communication method provided by an embodiment of the present application, shown from the perspective of device interaction. As shown in Figure 2, the method may include:
  • Step 201 The terminal device receives the first configuration information.
  • the terminal device may receive the first configuration information from the network device. If the primary and secondary cell changes are initiated by the primary base station, the terminal device may receive the first configuration information from the source primary base station. If the primary and secondary cell changes are initiated by the secondary base station, the terminal device may receive the first configuration information from the source secondary base station.
  • the first configuration information here includes at least one candidate target primary and secondary cell information and corresponding primary and secondary cell change execution condition information. The first configuration information is used to determine the first cell. It should be understood that the first cell is a cell that satisfies the conditions for performing the change of the primary and secondary cells among the at least one candidate target primary and secondary cells.
  • the terminal device may also determine, according to the first configuration information, whether there is a cell that satisfies the conditions for performing the change of the primary and secondary cells in the at least one candidate target primary and secondary cells, that is, to determine whether the first cell exists.
  • the information of at least one candidate target primary and secondary cells and the corresponding primary and secondary cell change execution condition information will be explained and described.
  • Information of candidate target primary and secondary cells may include identification information of each candidate target primary and secondary cells. For example, it may be a measurement identifier (measurement identifier, measID), or may be a configuration identifier (such as condReconfigId), or may be a physical cell identifier (PCI), or may also be a cell global identity (CGI) ).
  • measurement identifier measID
  • configuration identifier such as condReconfigId
  • PCI physical cell identifier
  • CGI cell global identity
  • the information of the candidate target primary and secondary cells may also include the cell index (such as cell index) of each candidate target primary and secondary cell, the cell-radio network temporary identifier (cell-radio network temporary identifier) allocated by each candidate target primary and secondary cell to the terminal device , C-RNTI), random access channel (RACH) resources required to access the candidate target primary and secondary cells, the frequency information of each candidate target primary and secondary cells, or the physical properties of each candidate target primary and secondary cells layer configuration parameters, media access control (media access control, MAC) layer configuration parameters, radio link control layer (radio link control, RLC) layer configuration parameters, packet data convergence protocol (packet data convergence protocol, PDCP) layer configuration parameters, At least one of service data adaptation protocol (service data adaptation protocol, SDAP) layer configuration parameters or radio resource control (radio resource control, RRC) layer configuration parameters and the like.
  • the cell index such as cell index
  • the cell-radio network temporary identifier cell-radio network temporary identifier allocated by each candidate target primary and secondary cell to the terminal device
  • the primary and secondary cell change execution conditions may include the primary and secondary cell change execution event types and corresponding thresholds.
  • the primary and secondary cell change event types may include event A3, event A5 or other execution event types.
  • Each candidate target primary and secondary cell corresponds to one or more primary and secondary cell change execution conditions.
  • a candidate target primary and secondary cell may be configured with one execution event type, and may be configured with at least one threshold value and/or at most two different trigger quantities.
  • the trigger quality may include reference signal received power (RSRP), reference signal received quality (reference signal received quality, RSRQ), or signal to interference plus noise ratio (SINR).
  • RSRP reference signal received power
  • RSRQ reference signal received quality
  • SINR signal to interference plus noise ratio
  • the terminal device may judge whether the candidate target primary and secondary cell satisfies the primary and secondary cell change execution conditions according to the first configuration information.
  • the primary and secondary cell change execution event type configured by the network device for the candidate target primary and secondary cell A is an A3 event
  • the configured corresponding threshold value is the first threshold value.
  • the terminal device may consider that the candidate target primary and secondary cell A satisfies the primary and secondary cell change conditions when the cell signal quality of the candidate target primary and secondary cell A is higher than that of the source primary and secondary cell by the first threshold. In other words, the terminal device may determine that the candidate target primary and secondary cell A is the first cell.
  • the cell signal quality may include at least one of RSRP, RSRQ, and SINR.
  • Step 202 The terminal device sends a first message when a radio link failure occurs in the source primary cell group MCG or the source secondary cell group SCG of the terminal device.
  • the terminal device may send the first message to the network device.
  • the network device here may be the source primary base station (source primary network device) or the source secondary base station (source secondary network device), or may also be the base station that manages the first cell, or may also be currently providing communication services for terminal devices base station.
  • the terminal device may send the second indication information to the network device after recording the first message.
  • the second indication information may notify the network device that the terminal device has recorded the first message, or may be used to trigger the network device to send a request message.
  • the request message is used to request the first message.
  • the network device may send the foregoing request message to the terminal device. Then, the terminal device can send the first message to the network device according to the request message.
  • the first message here may include first time period information.
  • the first time period information may be at least one of the following: the time period information T1 between the start of the terminal device receiving the first configuration information and the occurrence of RLF by the source MCG or the source SCG or the start of the occurrence of RLF by the source MCG or the source SCG and the start of the terminal device Time period information T2 between sending the first message.
  • the occurrence of RLF on the source MCG may refer to the occurrence of RLF on the source PCell and/or at least one SCell belonging to the source primary network device
  • the occurrence of RLF on the source SCG may refer to the occurrence of RLF on the source PSCell and/or at least one SCell belonging to the source secondary network device.
  • the terminal device receives the first configuration information at time t1, the source MCG or the source SCG generates RLF at time t2, and sends the first message at time t3. Therefore, the first message may contain T1 or T2 or T1 and T2.
  • the length of the line segment in the figure in the embodiment of the present application does not represent the length of the time period. As shown in FIG. 3, the line segment representing T2 is longer than the line segment representing T1, but it cannot represent that T2 is longer than T1.
  • the time segment in the figure The information is exemplary only.
  • the difference in the specific moment at which the source MCG or the source SCG occurs RLF will lead to the difference in the information of the first time period.
  • the first time period information is introduced according to the time when the source MCG or the source SCG generates RLF.
  • Example 1 The first cell does not exist when RLF occurs in the source MCG or the source SCG.
  • the absence of the first cell may mean that the first cell does not exist when the source MCG or the source SCG RLF occurs, or the terminal device fails to determine the first cell according to the first configuration information before the RLF occurs in the source MCG or the source SCG .
  • the terminal device may send the first time period information as shown in FIG. 3 .
  • the first time period information may include T1 or T2 or both T1 and T2.
  • the first network device when the first network device receives the first message sent by the terminal device, the first network device may send the second message to the second network device.
  • the second message may contain part or all of the first message.
  • FIG. 4 it is an exemplary flowchart of the communication between the terminal device and the network side, which may include the following steps:
  • Step 401 The terminal device sends a first message to the first network device.
  • the first message here may include the first message shown in FIG. 3 .
  • the first time period information may include T1 or T2 or both T1 and T2.
  • the first message may further include indication information that the source MCG or the source SCG generates RLF.
  • the first message may also include cell information of the source PCell and/or the source PSCell and/or at least one candidate target primary and secondary cell, wherein the cell information includes at least one of the following: PCI, frequency information, CGI, identification information (eg measurement identification, configuration identification).
  • the first message may further include the signal quality of the cell, such as the signal quality of at least one of the following cells when RLF occurs in the source MCG: the source PCell, the source PSCell, and at least one candidate target primary and secondary cell.
  • the first message may further include indication information that the terminal device has received the first configuration information.
  • the first message may further include indication information that the terminal device has not determined the first cell.
  • the first message may further include information of at least one candidate target primary and secondary cell, and corresponding primary and secondary cell change execution condition information.
  • Step 402 The first network device sends a second message to the second network device.
  • the second message here may contain part or all of the above-mentioned first message.
  • the second message may contain the first time period information as shown in FIG. 3 .
  • the first network device may be the source SN of the management source SCG
  • the second network device may be the management source MCG
  • the source MN that is, the source primary network device
  • the candidate SN that is, the candidate secondary network device
  • the source SN may send the second message to the source MN and/or the candidate SN, or the source SN may send the second message to the source MN, and the source MN may forward some or all of the second message contained in the second message to the candidate SN.
  • the source MN can reconfigure the MN. For example, the MN can be replaced (such as configuring other network devices as new primary network devices), or the MCG can be replaced while the MN remains unchanged (such as configuring other cells under the source MN as new PCells), or the MCG can be released Source MN (eg release source MCG configuration information).
  • the candidate SN may adjust the CPC parameters, for example, the candidate SN may adjust the first configuration information.
  • the above-mentioned second message may further include the first information.
  • the first information may indicate that a late CPC occurs, that is, after receiving the first message, the source SN considers that a late CPC occurs, and the second message sent by the source SN may include the first information.
  • the source SN can adjust the time for triggering the CPC preparation process between the source MN and the candidate SN, adjust the primary and secondary cell change execution condition information, and adjust the sending of the first configuration information. time.
  • the source MN or the candidate SN When the source MN or the candidate SN receives the first information indicating that the CPC occurs too late, optionally, if the source MN sends the first configuration information to the terminal device, the source MN can adjust the connection with the candidate SN according to the first information.
  • the time for CPC preparation and the time for sending the first configuration information, the candidate SN can adjust the information of at least one candidate target primary and secondary cells, and the time to configure the information of the candidate target primary and secondary cells.
  • the first network device may be the source MN, and the second network device may be the source SN, or may also be a candidate SN.
  • the source MN may determine that a late CPC has occurred according to the first message. Therefore, the second message sent by the source MN to the second network device (such as the source SN) may also include: First information indicating that a late CPC occurred.
  • the source MN can adjust the time for CPC preparation with the candidate SN and the time for sending the first configuration information according to the first message, and the source MN can also release the source SN (such as source SCG configuration information); or the source MN can also keep the source SN unchanged, for example, the source MN can replace the SCG or PSCell, and the replaced SCG/PSCell still belongs to the source SN; or the source MN can also change the SN, for example, Configure other network devices as new secondary network devices.
  • the source MN can adjust the time for CPC preparation with the candidate SN and the time for sending the first configuration information according to the first message, and the source MN can also release the source SN (such as source SCG configuration information); or the source MN can also keep the source SN unchanged, for example, the source MN can replace the SCG or PSCell, and the replaced SCG/PSCell still belongs to the source SN; or the source MN can also change the SN, for example, Configure other network devices as new secondary network
  • the candidate SN can adjust the CPC parameters after receiving the above-mentioned second message sent by the source MN or forwarded by the source SN, for example, the candidate SN can adjust the information of at least one candidate target primary and secondary cells, configure the candidate target primary and secondary cells time of cell information.
  • the first network device may be the source SN, and the second network device may be the source MN.
  • the source MN may determine that a late CPC occurs according to the second message. For example, it may be determined that a late CPC occurs according to the first time period information in the second message.
  • the late CPC here may refer to the fact that the network device sends the message (eg, the first configuration information) for the CPC procedure late, so that the terminal device cannot perform the handover of the primary and secondary cells.
  • the source MN can adjust the time for CPC preparation with the candidate SN, the condition information for changing the primary and secondary cells, and the time for sending the first configuration information.
  • the source MN can also adjust the MN, for example, the source MN can replace the MN (such as configuring other network equipment as the new main network equipment), or can replace the MCG and keep the MN unchanged (such as Other cells under the source MN are configured as new PCells), or the source MN can be released (eg, the source MCG configuration information is released).
  • the source MN may also forward the above-mentioned second message to the candidate SN.
  • the second message may contain first information indicating that a late CPC has occurred.
  • the candidate SN can adjust the CPC parameters, for example, can adjust the information of at least one candidate target primary and secondary cells, or the candidate SN can also adjust the time for configuring the information of the candidate target primary and secondary cells.
  • the first network device may be the source MN, and the second network device may be the source SN.
  • the source MN can release the source SN, or the source MN can replace the SCG or PSCell, and the replaced SCG/PSCell still belongs to the source SN;
  • the network device is configured as a new secondary network device.
  • the source MN can determine that the CPC occurs too late. If the source MN sends the first configuration information to the terminal device, the source MN can adjust the time for CPC preparation with the candidate SN, the execution condition information of the primary and secondary cells, and send the first configuration information. A time to configure information.
  • the source SN may adjust the time for triggering the CPC according to the too late CPC indication information in the second message.
  • the second network device may also be a candidate SN.
  • the candidate SN may adjust the CPC parameters, for example, may adjust the information of at least one candidate target primary and secondary cells.
  • the candidate SN may send a third message to the source MN or the source SN, where the third message may include part or all of the second message, optionally, the third message
  • the message may include second information indicating that a late CPC occurred.
  • Example 2 Before the terminal device determines the first cell, RLF occurs on the source SCG.
  • the terminal device can continue to determine whether there is the first cell according to the first configuration information.
  • the terminal device determines the first cell, and Initiate access to the first cell. It should be noted that, according to whether the terminal device successfully accesses the first cell, the first time period information can be divided into the following three cases:
  • the first time period information may further include at least one of the following:
  • the terminal device sends time period information T2 between the first messages.
  • the first time period information may be T1, T2, T3 and T4, or the first time period information may be T1, T2, T3, T4 and T5, or the first time period information may be T1, T3, T4 and T5, or the first time period information may be T1 and T2.
  • the first time period information in the embodiment of the present application is only exemplary, and is not a limitation on the first time period information. It should be understood that the first time period information may be other variations of the time period information between when the terminal device receives the first configuration information and when the terminal device reports the first message. For example, it may be a combination of various time periods between the terminal device receiving the first configuration information and the terminal device reporting the first message, or the entire period of time between the terminal device receiving the first configuration information and reporting the first message segment information, etc.
  • the first message may also include cell information of the source PCell and/or the source PSCell and/or the first cell and/or other candidate target primary and secondary cells except the first cell, wherein the cell information It includes at least one of the following: PCI, frequency information, CGI, identification information (eg, measurement identification, configuration identification).
  • the first message may also include the signal quality of the cell, such as the signal quality of at least one of the following cells when RLF occurs in the source SCG and when the terminal device successfully accesses the first cell: the source PCell, the source PSCell, the first cell Cell, candidate target primary and secondary cells except the first cell.
  • the first message may further include indication information of the occurrence of RLF in the source SCG.
  • the first message may further include indication information that the terminal device has received the first configuration information.
  • the first message may further include indication information that the terminal device determines the first cell.
  • the first message may further include indication information that the terminal device successfully accesses the first cell.
  • the first message may further include information of at least one candidate target primary and secondary cell, and corresponding primary and secondary cell change execution condition information.
  • the first network device may be the network device to which the first cell belongs (ie, the target SN), or the network device that provides communication for the terminal device.
  • the second network device may be a source secondary network device (ie, a source SN, or a network device managing the source SCG), or a candidate SN.
  • the first time period information may further include at least one of the following:
  • the first time period information may be T1, T3, T4 and T5.
  • the first time period information may be T1, T2, T3, T4 and T5.
  • other deformations are also possible, which are not specifically limited.
  • the first message may also include cell information of the source PCell and/or the source PSCell and/or the first cell and/or other candidate target primary and secondary cells except the first cell, wherein the cell information It includes at least one of the following: PCI, frequency information, CGI, identification information (eg, measurement identification, configuration identification).
  • the first message may also include the signal quality of the cell, such as the signal quality of at least one of the following cells when RLF occurs in the source SCG or when the terminal device fails to access the first cell: the source PCell, the source PSCell, the first Cell, candidate target primary and secondary cells except the first cell.
  • the first message may further include indication information of the occurrence of RLF in the source SCG.
  • the first message may further include indication information that no RLF occurs in the source MCG.
  • the first message may further include indication information that the terminal device has received the first configuration information.
  • the first message may further include indication information that the terminal device determines the first cell.
  • the first message may further include indication information that the terminal device fails to access the first cell.
  • the first message may further include information of at least one candidate target primary and secondary cell, and corresponding primary and secondary cell change execution condition information.
  • the first network device may be the source MN, or a network device that provides communication for the terminal device.
  • the second network device may be the network device to which the first cell belongs, or the source SN.
  • the terminal equipment fails to access the first cell, and RLF occurs in the source MCG.
  • the first time period information may include at least one of the following:
  • the first time period information may be T1, T3, T4, T5 and T6.
  • the first time period information may be T1, T2, T3, T4, T5 and T6.
  • other deformations are also possible, which are not specifically limited.
  • the first time period information may include at least one of the following:
  • the first time period information may be T1, T3, T4, T5 and T6.
  • the first time period information may be T1, T2, T3, T4, T5 and T6.
  • other deformations are also possible, which are not specifically limited.
  • the first message may also include cell information of the source PCell and/or the source PSCell and/or the first cell and/or other candidate target primary and secondary cells except the first cell, wherein the cell information It includes at least one of the following: PCI, frequency information, CGI, identification information (eg, measurement identification, configuration identification).
  • the first message may also include the signal quality of the cell, such as when RLF occurs in the source SCG, when the terminal equipment fails to access the first cell, or RLF occurs in the source MCG, the signal quality of at least one of the following cells: source PCell, The source PSCell, the first cell, and the candidate target primary and secondary cells except the first cell.
  • the first message may further include indication information of the occurrence of RLF in the source SCG.
  • the first message may further include indication information of the occurrence of RLF in the source MCG.
  • the first message may further include indication information that the terminal device has received the first configuration information.
  • the first message may further include indication information that the terminal device determines the first cell.
  • the first message may further include indication information that the terminal device fails to access the first cell.
  • the first message may further include information of at least one candidate target primary and secondary cell, and corresponding primary and secondary cell change execution condition information.
  • the first network device may be a network device that provides communication for the terminal device.
  • the second network device may be a network device to which the first cell belongs, or a source SN, or a source MN.
  • the first network device may send the second message to the second network device.
  • FIG. 9 it is an exemplary flowchart of the communication between the terminal device and the network side, which may include the following steps:
  • Step 901 The terminal device determines the first cell according to the first configuration information, and initiates access to the first cell.
  • the terminal device may determine, according to the first configuration information, the first cell that satisfies the CPC change condition, and initiate access to the first cell.
  • Step 902 If the terminal device successfully accesses the first cell, the terminal device sends a first message to the network device that manages the first cell.
  • the network device that manages the first cell may be the aforementioned first network device.
  • the terminal device may send the first message to the network device that provides communication for the terminal device, and it is not limited that the terminal device can only send the first message to the network device to which the first cell belongs.
  • the first network device considers that the CPC occurs too late, and can adjust the trigger time of the CPC, for example, the first network device sends the first configuration information to the terminal device in advance time, optionally, the first network device may also adjust the first configuration information, such as lowering the conditions for performing the change of the primary and secondary cells.
  • the first network device may send a second message to the source SN (ie, the second network device), and the second message may include the first message Part or all of the content in the second message, optionally, the second message may also include the indication information of the late CPC, that is, the first information.
  • the source SN After the source SN receives the second message, it can adjust the trigger time of the CPC, such as to the terminal in advance.
  • the time at which the device sends the first configuration information optionally, the source SN may also adjust the first configuration information, such as lowering the execution conditions for changing the primary and secondary cells.
  • the candidate SN may send a third message to the source MN or the source SN, where the third message may include part or all of the second message, optionally, the third message
  • the message may include second information indicating that a late CPC occurred.
  • Step 903 if the terminal device fails to access the first cell and RLF occurs in the source MCG, the terminal device initiates an RRC re-establishment process, and performs step 904 .
  • Step 904 The terminal device sends a first message to the network device to which the RRC re-establishment cell belongs.
  • the network device to which the RRC re-establishment cell belongs may be the aforementioned first network device, and correspondingly, the RRC re-establishment cell may be different from the first cell and may be a cell managed by the aforementioned first network device.
  • the terminal device may send the first message to the network device that provides communication for the terminal device, and it is not limited that the terminal device can only send the first message to the network device to which the RRC re-establishment cell belongs.
  • For the content contained in the first message reference may be made to the foregoing.
  • the first network device may send a second message to the source MN and/or the source SN, so that the source MN or the source SN can adjust the trigger time of the CPC, such as sending the first message to the terminal device in advance.
  • the time for configuring the information optionally, the source MN or the source SN can also adjust the first configuration information, such as reducing the execution condition of the primary and secondary cell change.
  • the first network device may also send the second message to the candidate SN, and the candidate SN may adjust the first configuration information according to the second message, such as adjusting the information of the candidate target primary and secondary cells.
  • the second message may include part or all of the content of the first message, which will not be repeated.
  • Step 905 If the terminal device fails to access the first cell and no RLF occurs in the source MCG, the terminal device sends a first message to the source MN.
  • the source MN may be the aforementioned first network device.
  • the first message here may include the first time period information as shown in FIG. 5 to FIG. 8 , for details, reference may be made to the foregoing.
  • the terminal device may send the first message to the network device that provides communication for the terminal device, and it is not limited that the terminal device can only send the first message to the source MN.
  • the first network device If the CPC is triggered by the first network device, after receiving the first message, the first network device considers that the CPC occurs too late, and can adjust the trigger time of the CPC, for example, the first network device sends the first configuration information to the terminal device in advance time, optionally, the first network device may also adjust the first configuration information, such as lowering the conditions for performing the change of the primary and secondary cells.
  • the first network device may send a second message to the candidate SN (such as the network device to which the first cell belongs, or the network device to which other candidate cells belong), and the candidate SN may adjust the CPC parameters based on the second message, such as Adjust the information of the candidate target primary and secondary cells.
  • the first network device may release the source SN, or replace the SCG/PSCell. If the CPC is triggered by the source SN, after the first network device receives the first message, the first network device may send a second message to the source SN (ie, the second network device), and the second message may include the first message Part or all of the content in the second message, optionally, the second message may also include the indication information of the late CPC.
  • the source SN can adjust the trigger time of the CPC, such as sending the first configuration to the terminal device in advance. Information time, optionally, the source SN can also adjust the first configuration information, such as reducing the primary and secondary cell change execution conditions.
  • the first network device may also send the second message to the candidate SN, and the candidate SN may adjust the first configuration information according to the second message, such as adjusting the information of the candidate target primary and secondary cells.
  • the second message may include part or all of the content of the first message, which will not be repeated.
  • the candidate SN may send a third message to the source MN or the source SN, where the third message may include part or all of the second message, optionally, the third message
  • the message may include second information indicating that a late CPC occurred.
  • Example 3 Before the RLF occurs in the source SCG or the source MCG, the terminal device determines the first cell.
  • the first time period information may include at least one of the following:
  • the first time period information may be T2, T3 and T4.
  • the first time period information may be T1, T2, T3 and T4. Or other deformations are also possible, which are not specifically limited.
  • the first message may also include cell information of the source PCell and/or the source PSCell and/or the first cell and/or other candidate target primary and secondary cells except the first cell, wherein the cell information includes the following At least one item: PCI, frequency information, CGI, identification information (eg, measurement identification, configuration identification).
  • the first message may also include the signal quality of the cell, for example, when RLF occurs in the source SCG or RLF occurs in the source MCG, the signal quality of at least one of the following cells: the source PCell, the source PSCell, the first cell, except the first cell candidate target primary and secondary cells outside the
  • the first message may further include indication information that the source SCG or the source MCG generates RLF.
  • the first message may further include indication information that the terminal device has received the first configuration information.
  • the first message may further include indication information that the terminal device determines the first cell.
  • the first message may further include indication information that the terminal device does not access or stops accessing the first cell.
  • the first message may further include information of at least one candidate target primary and secondary cell, and corresponding primary and secondary cell change execution condition information.
  • the first network device may be the source MN, and the second network device may be the source SN or a candidate SN (such as the network device to which the first cell belongs, or the network device to which other candidate cells belong). network equipment).
  • the source MN may determine that a too late CPC has occurred according to the first message, so the second message may further include first information indicating that a too late CPC has occurred.
  • the source MN can adjust the trigger time of the CPC, such as the time to send the first configuration information to the terminal device in advance, optionally, the source MN can also adjust the first configuration information, such as reducing the primary and secondary cell change execution conditions.
  • the source MN may send the second message to the candidate SN, and the candidate SN may adjust the CPC parameters based on the second message, such as adjusting the information of the candidate target primary and secondary cells.
  • the source MN can also release the source SN, or replace the SCG/PSCell.
  • the first network device may be the source MN, and the second network device may be the source SN or a candidate SN (such as the network device to which the first cell belongs, or other The network device to which the candidate cell belongs).
  • the source MN may release the source SN, or may replace the SCG/PSCell, and the replaced SCG/PSCell may or may not belong to the source SN.
  • the second message may be sent to the source SN, the candidate SN.
  • the source MN may send the second message to the source SN, and the source SN then forwards the received second message to the candidate SN.
  • the second message may include part or all of the content of the first message.
  • the second message may also include indication information of a too late CPC.
  • the source SN determines that a too late CPC occurs, The triggering time of the CPC can be adjusted, such as the time to send the first configuration information to the terminal device in advance.
  • the source SN can also adjust the first configuration information, such as reducing the primary and secondary cell change execution conditions.
  • the candidate SN may adjust the first configuration information according to the received second message, such as adjusting the information of the candidate target primary and secondary cells.
  • the terminal device has determined the first cell, and the terminal device starts or continues to initiate access to the first cell.
  • the first time period information may also be different, which may include the following two situations:
  • the first time period information may include at least one of the following:
  • the first time period information may be T1, T3, T4, T5 and T6, or the first time period information may also be T1, T2, T3, T4, T5 and T6.
  • the first time period information may be T1, T2, T3, T4, T5 and T6.
  • other deformations are also possible, which are not specifically limited.
  • the first message may also include cell information of the source PCell and/or the source PSCell and/or the first cell and/or other candidate target primary and secondary cells except the first cell, wherein the cell information includes at least one of the following: Items: PCI, frequency information, CGI, identification information (eg measurement identification, configuration identification).
  • the first message may also include the signal quality of the cell, for example, when RLF occurs in the source SCG or RLF occurs in the source MCG, and when the terminal device successfully accesses the first cell, the signal quality of at least one of the following cells: source PCell, source PCell PSCell, the first cell, and candidate target primary and secondary cells except the first cell.
  • the first message may further include indication information that the source SCG or the source MCG generates RLF.
  • the first message may further include indication information that the terminal device has received the first configuration information.
  • the first message may further include indication information that the terminal device determines the first cell.
  • the first message may further include indication information that the terminal device starts or continues to access the first cell after RLF occurs in the SCG or the source MCG.
  • the first message may further include indication information that the terminal device successfully accesses the first cell.
  • the first message may further include information of at least one candidate target primary and secondary cell, and corresponding primary and secondary cell change execution condition information.
  • the terminal device may send the first message to the network device that manages the first cell.
  • the network device that manages the first cell may be the aforementioned first network device.
  • the first network device may also send the second message to the second network device.
  • FIG. 12 it is an exemplary flowchart of the communication between the terminal device and the first network device, which may include the following steps:
  • Step 1201 The terminal device sends a first message to the first network device.
  • the first network device may be a network device that manages the first cell.
  • the terminal device may send the first message to the network device that provides communication for the terminal device, and it is not limited that the terminal device can only send the first message to the network device to which the first cell belongs.
  • the first network device If the CPC is triggered by the first network device, after receiving the first message, the first network device considers that the CPC occurs too late, and can adjust the trigger time of the CPC, for example, the first network device sends the first configuration information to the terminal device in advance time, optionally, the first network device may also adjust the first configuration information, such as lowering the conditions for performing the change of the primary and secondary cells. If the CPC is triggered by the source MN, after the first network device receives the first message, the first network device may send a second message to the source MN, and the second message may include part or all of the content of the first message, Optionally, the second message may also include indication information of the late CPC.
  • the source MN can adjust the trigger time of the CPC, such as the time to send the first configuration information to the terminal device in advance, optionally.
  • the source MN may also adjust the first configuration information, such as lowering the conditions for performing the change of the primary and secondary cells.
  • Step 1202 The network device managing the first cell sends a second message to the second network device.
  • the second network device here may be the source MN or the candidate SN.
  • the network device managing the first cell may send the second message to the source MN and the candidate SN; or the network device managing the first cell may send the second message to the source MN.
  • the source MN may For MN reconfiguration, for example, the MCG/PCell may be replaced, and the replaced MCG/PCell may or may not belong to the source MN.
  • the candidate SN can adjust the CPC parameters according to the second message, for example, adjust the information of the candidate target primary and secondary cells.
  • the candidate SN may send a third message to the source MN or the source SN, where the third message may include part or all of the second message, optionally, the third message
  • the message may include second information indicating that a late CPC occurred.
  • the first time period information may be different according to whether the first cell is determined before the RLF occurs in the source SCG or before the RLF occurs in the source MCG.
  • different first time period information will be introduced respectively.
  • the terminal device determines the first cell, and fails to access the first cell, and no RLF occurs in the source SCG.
  • the first time period information may include at least one of the following:
  • the first time period information may be T3, T4, T5, T6, or the first time period information may be T1, T2, T3, T4, T5, and T6. Or other deformations, without limitation.
  • the terminal device determines the first cell, and fails to access the first cell, and RLF occurs in the source SCG.
  • the first time period information may include at least one of the following:
  • the first time period information may be T3, T4, T5, T6 and T7, or the first time period information may be T1, T2, T3, T4, T5, T6 and T7. Or other deformations, without limitation.
  • the first time period information may include at least one of the following:
  • the first time period information may be T3, T4, T5, T6 and T7, or the first time period information may be T1, T2, T3, T4, T5, T6 and T7. Or other deformations, without limitation.
  • the first network device may send the second message to the second network device.
  • FIG. 16 it is an exemplary flowchart of the communication between the terminal device and the network side, which may include the following steps:
  • Step 1601 After the first cell is determined, the source MCG generates RLF, and the terminal device initiates access to the first cell.
  • Step 1602 If the terminal device successfully accesses the first cell, the terminal device sends the first message to the first network device.
  • the first network device may be the network device that manages the first cell
  • the second network device may be the source MN or the candidate SN.
  • the terminal device may send the first message to the network device that provides communication for the terminal device, and it is not limited that the terminal device can only send the first message to the network device to which the first cell belongs.
  • the first network device may send the second message to the source MN.
  • the second message may be part or all of the first message.
  • the second message may contain the first time period information as shown in FIGS. 13-15 .
  • the source MN can change the MCG/PSCell, and the changed MCG/PSCell may or may not belong to the source MN.
  • the source MN can adjust the trigger time of the CPC, such as sending the first message to the terminal device in advance.
  • the source MN may also adjust the first configuration information, such as lowering the execution condition for the change of the primary and secondary cells.
  • the first network device may also send the second message to the source SN and the candidate SN, or the source MN may send the second message to the source SN and the candidate SN after receiving the second message.
  • the source SN can adjust the trigger time of the CPC, such as the time to send the first configuration information to the terminal device in advance.
  • the source SN can also adjust the first configuration information.
  • Configuration information such as lowering the primary and secondary cell change execution conditions, on the other hand, the candidate SN can adjust the CPC parameters, for example, can adjust the information of the candidate target primary and secondary cells.
  • Step 1603 If the terminal device fails to access the first cell and no RLF occurs in the source SCG, send the first message to the first network device.
  • the first network device may be the source SN
  • the second network device may be the source MN or a candidate SN.
  • the terminal device can send the first message to the network device that provides communication for the terminal device, and it is not limited that the terminal device can only send the first message to the source SN.
  • the source SN can adjust the trigger time of the CPC, such as the time to send the first configuration information to the terminal device in advance, optionally, the source SN can also adjust the first configuration information, such as reducing the change of the primary and secondary cells. execution condition.
  • the source SN may send the second message to the source MN.
  • the second message here may include part or all of the first message.
  • the second message may include the first time period information as shown in FIG. 13 to FIG. 15 .
  • the source MN may change the MCG/PSCell, and the changed MCG/PSCell may or may not belong to the source MN.
  • the source MN can adjust the trigger time of the CPC, such as the time to send the first configuration information to the terminal device in advance.
  • the source MN can also adjust the first configuration information, such as reducing the Primary and secondary cell change execution conditions.
  • the source SN may also send the second message to the candidate SN, or the source MN may send the second message to the candidate SN.
  • the candidate SN may adjust the CPC parameters, for example, may adjust the information of the candidate target primary and secondary cells.
  • the candidate SN may send a third message to the source MN or the source SN, where the third message may include part or all of the second message, optionally, the third message
  • the message may include second information indicating that a late CPC occurred.
  • Step 1604 If the terminal equipment fails to access the first cell and RLF occurs in the source SCG, the terminal equipment re-establishes the RRC connection.
  • Step 1605 The terminal device sends the first message to the first network device.
  • the aforementioned first network device may be a network device of the management cell A, and the second network device may be a source MN or a candidate SN.
  • the cell A here is the cell accessed by the terminal device to re-establish the RRC connection, and may be different from the first cell.
  • the terminal device may send the first message to the network device that provides communication for the terminal device, and it is not limited that the terminal device can only send the first message to the network device to which cell A belongs.
  • the network device or the first network device managing cell A may send the second message to the source MN, source SN or candidate SN.
  • the second message here may contain part or all of the first message.
  • the second message may contain the first time period information as shown in FIGS. 13-15 .
  • the network device managing cell A may send the second message to the source MN, and the source MN may send the second message to the source SN or the candidate SN.
  • the source MN may change the MCG/PSCell, and the changed MCG/PSCell may or may not belong to the source MN.
  • the source MN may adjust the CPC.
  • the trigger time such as the time to send the first configuration information to the terminal device in advance, optionally, the source MN can also adjust the first configuration information, such as reducing the primary and secondary cell change execution conditions.
  • the source SN can adjust the trigger time of the CPC, such as the time to send the first configuration information to the terminal device in advance.
  • the first configuration information may be adjusted, for example, the conditions for performing the change of the primary and secondary cells may be lowered.
  • the candidate SN may adjust the CPC parameters, for example, may adjust the information of the candidate target primary and secondary cells.
  • the candidate SN may send a third message to the source MN or the source SN, where the third message may include part or all of the second message, optionally, the third message
  • the message may include second information indicating that a late CPC occurred.
  • the terminal device determines the first cell, and fails to access the first cell, and no RLF occurs in the source MCG.
  • the first time period information may include at least one of the following:
  • the first time period information may be T3, T4, T5 and T6, or the first time period information may also be T1, T2, T3, T4, T5 and T6. Or other deformations, without limitation.
  • the terminal device determines the first cell, and fails to access the first cell, and the RLF occurs in the source MCG.
  • the first time period information may include at least one of the following:
  • the first time period information may be T3, T4, T5, T6, and T7, or the first time period information may be T1, T2, T3, T4, and T5, T6, and T7. Or other deformations, without limitation.
  • the first time period information may include at least one of the following.
  • the first time period information may be T3, T4, T5, T6 and T7, or the first time period information may be T1, T2, T3, T4, T5, T6 and T7. Or other deformations, without limitation.
  • the first network device may send the second message to the second network device.
  • FIG 20 it is an exemplary flowchart of the communication between the terminal device and the network side, which may include the following steps:
  • Step 2001 After the first cell is determined, the source SCG generates RLF, and the terminal device initiates access to the first cell.
  • Step 2002 If the terminal device successfully accesses the first cell, the terminal device sends a first message to the first network device.
  • the first network device may be a network device that manages the first cell
  • the second network device may be a source MN or a candidate SN.
  • the terminal device may send the first message to the network device that provides communication for the terminal device, and it is not limited that the terminal device can only send the first message to the network device to which the first cell belongs.
  • the network device managing the first cell may send the second message to the source MN.
  • the second message may contain part or all of the first message.
  • the second message may contain the first time period information as shown in FIGS. 17-19 .
  • the source MN may change the MCG/PSCell, and the changed MCG/PSCell may or may not belong to the source MN.
  • the source MN may adjust the CPC.
  • the trigger time such as the time to send the first configuration information to the terminal device in advance
  • the source MN can also adjust the first configuration information, such as reducing the primary and secondary cell change execution conditions.
  • the network device managing the first cell may also send the second message to the source SN or the candidate SN, or the source MN may send the second message to the source SN or the candidate SN after receiving the second message.
  • the source SN can adjust the trigger time of the CPC, such as the time to send the first configuration information to the terminal device in advance.
  • the source SN can also adjust the first configuration information, such as lowering the primary and secondary cell change execution conditions.
  • the candidate SN may adjust the CPC parameters, for example, may adjust the information of the candidate target primary and secondary cells.
  • Step 2003 If the terminal device fails to access the first cell and no RLF occurs in the source MCG, send the first message to the first network device.
  • the first network device may be the source MN
  • the second network device may be the source SN or the candidate SN.
  • the terminal device may send the first message to the network device that provides communication for the terminal device, and it is not limited that the terminal device can only send the first message to the source MN.
  • the source MN may send the second message to the source SN or the candidate SN.
  • the second message may contain part or all of the first message.
  • the second message may contain the first time period information as shown in FIGS. 17-19 .
  • the source MN may change the MCG/PSCell, and the changed MCG/PSCell may or may not belong to the source MN.
  • the source MN may adjust the CPC.
  • the trigger time such as the time to send the first configuration information to the terminal device in advance
  • the source MN can also adjust the first configuration information, such as reducing the primary and secondary cell change execution conditions.
  • the source MN may also send the second message to the source SN or the candidate SN, or the source SN may send the second message to the candidate SN after receiving the second message.
  • the source SN can adjust the trigger time of the CPC, such as the time to send the first configuration information to the terminal device in advance.
  • the first configuration information may be adjusted, for example, the conditions for performing the change of the primary and secondary cells may be lowered.
  • the candidate SN may adjust the CPC parameters, for example, may adjust the information of the candidate target primary and secondary cells.
  • the candidate SN may send a third message to the source MN or the source SN, where the third message may include part or all of the second message, optionally, the third message
  • the message may include second information indicating that a late CPC occurred.
  • Step 2004 If the terminal equipment fails to access the first cell and RLF occurs in the source MCG, the terminal equipment re-establishes the RRC connection.
  • Step 2005 The terminal device sends a first message to the first network device.
  • the first network device may be the network device of the management cell A, and the second network device may be the source MN or the candidate SN.
  • the cell A here may be a cell accessed by the terminal device to re-establish the RRC connection, and may be different from the first cell.
  • the terminal device may send the first message to the network device that provides communication for the terminal device, and it is not limited that the terminal device can only send the first message to the network device to which cell A belongs.
  • the network device managing cell A may send the second message to the source MN, source SN or candidate SN.
  • the second message here may contain part or all of the first message.
  • the second message may contain the first time period information as shown in FIGS. 17-19 .
  • the network device managing cell A may send the second message to the source MN, and after receiving the second message, the source MN may send the second message to the source SN or the candidate SN.
  • the source MN may change the MCG/PSCell, and the changed MCG/PSCell may or may not belong to the source MN.
  • the source MN may adjust the CPC.
  • the trigger time such as the time to send the first configuration information to the terminal device in advance, optionally, the source MN can also adjust the first configuration information, such as reducing the primary and secondary cell change execution conditions.
  • the source SN can adjust the trigger time of the CPC, such as the time to send the first configuration information to the terminal device in advance.
  • the first configuration information may be adjusted, for example, the conditions for performing the change of the primary and secondary cells may be lowered.
  • the candidate SN may adjust the CPC parameters, for example, may adjust the information of the candidate target primary and secondary cells.
  • the candidate SN may send a third message to the source MN or the source SN, where the third message may include part or all of the second message, optionally, the third message
  • the message may include second information indicating that a late CPC occurred.
  • Example 4 After the terminal device successfully accesses the first cell, RLF occurs in the source MCG or the source SCG.
  • the first time period information may include at least one of the following:
  • Time period information T3 between when the terminal device receives the first configuration information and when the terminal device determines the first cell; time period information T4 between when the terminal device determines the start of the first cell and when the terminal device successfully accesses the first cell; Time period information T5 between the start of the terminal device successfully accessing the first cell and the occurrence of RLF in the source MCG or source SCG; time period information T1 between the start of the terminal device receiving the first configuration information and the start of RLF occurrence of the source MCG or source SCG ; Time period information T2 between when the source MCG or the source SCG starts RLF and when the terminal device sends the first message.
  • the first time period information may include T3, T4 and T5, or the first time period information may include T1, T2, T3, T4 and T5. Or other deformations, without limitation.
  • the first network device may also send a second message to the second network device.
  • a second message As shown in Figure 22, it is an exemplary flow chart of side communication between the terminal device and the network, which may include the following steps:
  • Step 2201 The terminal device sends a first message to the first network device.
  • the first network device here may be a network device that manages the first cell.
  • the terminal device may send the first message to the network device that provides communication for the terminal device, and it is not limited that the terminal device can only send the first message to the network device to which the first cell belongs.
  • the first message may include first time period information as shown in FIG. 21 .
  • Step 2202 The first network device may send a second message to the second network device.
  • the second network device here may be at least one of a source MN, a source SN and a candidate SN.
  • the network device managing the first cell may send a second message to the source MN. If RLF occurs in the source SCG after accessing the first cell, The network device managing the first cell may send the second message to the source SN. Optionally, the network device managing the first cell may also send the second message to the source SN and the candidate SN, or the source MN may send the second message to the source SN, or the source MN or the source SN may send the second message to the candidate SN the second message. Optionally, after receiving the second message, the source MN may change the MCG/PSCell, and the changed MCG/PSCell may or may not belong to the source MN.
  • the source MN may adjust the CPC.
  • the trigger time such as the time to send the first configuration information to the terminal device in advance
  • the source MN can also adjust the first configuration information, such as reducing the primary and secondary cell change execution conditions.
  • the source SN can adjust the trigger time of the CPC, such as the time to send the first configuration information to the terminal device in advance.
  • the first configuration information may be adjusted, for example, the conditions for performing the change of the primary and secondary cells may be lowered.
  • the candidate SN may adjust the CPC parameters, for example, may adjust the information of the candidate target primary and secondary cells.
  • the candidate SN may send a third message to the source MN or the source SN, where the third message may include part or all of the second message.
  • the third message may include second information indicating that a late CPC occurred.
  • the second message here may contain part or all of the first message.
  • the second message may contain the first time period information as shown in FIG. 21 .
  • the terminal device may send the first message to the first network device.
  • the first message may include first time period information.
  • the terminal device may also send the first indication information to the first network device.
  • the first indication information may indicate that the source MCG generates RLF or the source SCG generates RLF.
  • the terminal device may send the first message and the first indication information separately, or may also carry the first indication information in the first message for transmission.
  • the first indication information is used to instruct the source MCG to generate RLF, and if the source SCG has RLF, the first indication information is used to instruct the source SCG to generate RLF.
  • the first message may further include cell information of the source MCG.
  • the source MCG may include a source PCell, and optionally a source SCell belonging to the source MN.
  • the cell information of the source MCG may include identification information of the source MCG. For example, at least one of the PCI of the source MCG, the frequency of the source MCG, and the CGI of the source MCG.
  • the cell information of the source MCG may further include the signal quality of the cell. For example, it may include the cell signal quality of the source MCG of the terminal device when RLF occurs in the source SCG. It may also include the cell signal quality of the source MCG of the terminal device when RLF occurs in the source MCG.
  • the first message may further include cell information of the source SCG.
  • the source SCG may include a source PSCell, and optionally a source SCell belonging to the source SN.
  • the cell information of the source SCG may include identification information of the source SCG. For example, at least one of the PCI of the source SCG, the frequency of the source SCG, and the CGI of the source SCG.
  • the cell information of the source SCG may further include cell signal quality. For example, it may include the cell signal quality of the source SCG of the terminal device when RLF occurs in the source MCG. It may also include the cell signal quality of the source SCG of the terminal device when RLF occurs in the source SCG.
  • the cell signal quality of the source SCG when the terminal device sends the first message may also include the cell signal quality of the source SCG when the terminal device determines the first cell. Or, it may also include the cell signal quality of the source SCG when the terminal device successfully accesses the first cell. Alternatively, the cell signal quality of the source SCG when the terminal device fails to access the first cell may also be included.
  • the first message may further include cell information of at least one candidate target primary and secondary cells.
  • the cell information of the at least one candidate target cell here may include cell information of the first cell, or may also include cell information of other candidate target primary and secondary cells except the first cell.
  • the identification information of at least one candidate target primary and secondary cell may be included.
  • it may be at least one of PCI, frequency, and CGI.
  • the cell signal quality of at least one candidate target primary and secondary cells may also be included.
  • it may include the cell signal quality of at least one candidate target primary and secondary cells of the terminal device when RLF occurs in the source MCG or RLF occurs in the source SCG.
  • the second message may contain part or all of the first message. Therefore, the second message may also include at least one of the above-mentioned first information, cell information of the source MCG, cell information of the source SCG, and cell information of at least one candidate target primary and secondary cell.
  • the second message may include the first information and the cell information of the source MCG.
  • the second message may include the first information and the cell information of the source SCG.
  • the second message may include the first information and cell information of at least one candidate target primary and secondary cells.
  • the second message may include the first information, cell information of the source MCG, cell information of the source SCG, and cell information of at least one candidate target primary and secondary cells. Or otherwise, the present invention does not limit this.
  • the network device can determine the reason for the failure to change the primary and secondary cells according to the above information, The network devices can also exchange reasonable and effective information, so that the configuration information of the primary and secondary cell changes can be optimized accordingly, and the success rate of the primary and secondary cell changes can be improved.
  • the communication method in the embodiment of the present application is described above, and the communication device in the embodiment of the present application will be described below.
  • the method and the device are based on the same technical concept. Since the method and the device have similar principles for solving problems, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.
  • a terminal device 2300 is provided.
  • the terminal device 2300 can perform each step in the above method by the terminal device, and in order to avoid repetition, details are not described here.
  • the terminal device 2300 includes: a communication unit 2310, a storage unit 2330, and optionally, a processing unit 2320; the processing unit 2320 may be connected to the storage unit 2330 and the communication unit 2310, respectively, and the storage unit 2330 may also be connected to the communication unit 2310 . Wherein, the processing unit 2320 may be integrated with the storage unit 2330 .
  • the storage unit 2330 is used to store computer programs
  • the communication unit 2310 is configured to receive first configuration information; the first configuration information includes at least one candidate target primary and secondary cell information and corresponding primary and secondary cell change execution condition information; the first configuration information is used is used to determine a first cell; the first cell is a cell that satisfies the conditions for performing the change of the primary and secondary cells among the at least one candidate target primary and secondary cells.
  • the communication unit 2310 sends a first message; the first message includes first time period information.
  • the first time period information reference may be made to the relevant description of the method embodiment shown in FIG. 2 .
  • An embodiment of the present application further provides a communication apparatus, where the communication apparatus may be a terminal device or a circuit.
  • the communication apparatus may be configured to perform the actions performed by the terminal device in the foregoing method embodiments.
  • the various steps performed by the terminal device in the above method can also be implemented by a chip used for the terminal device, wherein the communication unit can be an input/output circuit or an interface of the chip, and the processing unit can be a logic circuit.
  • the described steps process the data to be processed and obtain the processed data.
  • the data to be processed may be data received by the input circuit/interface, such as first configuration information.
  • the processed data may be data obtained according to the data to be processed, such as the first message.
  • the output circuit/interface is used to output the processed data.
  • FIG. 24 shows a schematic structural diagram of a simplified terminal device.
  • the terminal device takes a mobile phone as an example.
  • the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the processor is mainly used to process communication protocols and communication data, control terminal equipment, execute software programs, and process data of software programs.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal.
  • Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal equipment may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal through the antenna in the form of electromagnetic waves.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.
  • FIG. 24 only one memory and processor are shown in FIG. 24 . In an actual end device product, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or a storage device or the like.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in this embodiment of the present application.
  • the antenna and radio frequency circuit with a transceiver function can be regarded as a communication unit of the terminal device
  • the processor with a processing function can be regarded as a processing unit of the terminal device.
  • the terminal device includes a communication unit 2410 and a processing unit 2420 .
  • a communication unit may also be referred to as a transceiver, transceiver, transceiver, or the like.
  • the processing unit may also be referred to as a processor, a processing single board, a processing module, a processing device, and the like.
  • the device for implementing the receiving function in the communication unit 2410 may be regarded as a receiving unit, and the device for implementing the transmitting function in the communication unit 2410 may be regarded as a transmitting unit, that is, the communication unit 2410 includes a receiving unit and a transmitting unit.
  • a communication unit may also sometimes be referred to as a transceiver, transceiver, or transceiver circuit, or the like.
  • the receiving unit may also sometimes be referred to as a receiver, receiver, or receiving circuit, or the like.
  • the transmitting unit may also sometimes be referred to as a transmitter, a transmitter, or a transmitting circuit, or the like.
  • the communication unit 2410 is configured to perform the sending and receiving operations on the terminal device side in the above method embodiments
  • the processing unit 2420 is configured to perform other operations on the terminal device in the above method embodiments except for sending and receiving operations.
  • the communication unit 2410 is configured to perform the receiving and/or sending operations on the terminal device side in step 201 and step 202 in FIG. 2 , and/or the communication unit 2410 is further configured to perform the embodiments of the present application Other sending and receiving steps on the terminal device side.
  • the processing unit 2420 is configured to execute other processing steps on the terminal device side in the embodiments of the present application.
  • a network device 2500 is provided.
  • the network device 2500 can perform various steps performed by the first network device or the second network device in the above method, and in order to avoid repetition, details are not described here.
  • the network device 2500 includes: a communication unit 2510, a storage unit 2530, and optionally, a processing unit 2520; the processing unit 2520 may be connected to the storage unit 2530 and the communication unit 2510, respectively, and the storage unit 2530 may also be connected to the communication unit 2510 .
  • the processing unit 2520 may be integrated with the storage unit 2530 .
  • the storage unit 2530 is used to store computer programs
  • the communication unit 2510 is configured to receive the first message sent by the terminal device.
  • the communication unit 2510 is further configured to send a second message to the second network device.
  • the relevant description of the second message reference may be made to the relevant description of the method embodiment shown in FIG. 2 .
  • the communication unit 2510 may further receive the second message sent by the first network device, and send the third message to the third network device.
  • the description of the third message may be the relevant description in the method embodiment shown in FIG. 2 .
  • the steps performed by the first network device or the second network device in the above method may also be implemented by a chip used for the network device, wherein the communication unit may be an input/output circuit or an interface of the chip, and the processing unit may be a logic circuit.
  • the circuit may process the data to be processed according to the steps described in the above method aspects, and obtain the processed data.
  • the data to be processed may be data received by the input circuit/interface, such as a first message.
  • the processed data may be data obtained according to the data to be processed, such as a second message.
  • the output circuit/interface is used to output the processed data.
  • a communication apparatus 2600 provided by an embodiment of the present application is used to implement the functions of a terminal device and a network device in the foregoing method.
  • the communication device may be a terminal device, a network device, or a chip used for the terminal device or the network device, or a device that can be matched and used with the terminal device or the network device.
  • the communication apparatus 2600 includes at least one processor 2620, configured to implement the functions of the terminal device and the network device in the methods provided in the embodiments of the present application.
  • Communication apparatus 2600 may also include communication interface 2610 .
  • the communication interface may be a transceiver, a circuit, a bus, a module or other types of communication interfaces, which are used to communicate with other devices through a transmission medium.
  • the communication interface 2610 is used for the apparatus in the communication apparatus 2600 to communicate with other devices.
  • the processor 2620 can perform the functions of the processing unit 2320 shown in FIG. 23
  • the communication interface 2610 can perform the functions of the communication unit 2310 shown in FIG. 23 .
  • the communication apparatus 2600 is a network device
  • the processor 2620 can perform the function of the processing unit 2520 shown in FIG. 25
  • the communication interface 2610 can perform the function of the communication unit 2510 shown in FIG. 25 .
  • Communication apparatus 2600 may also include at least one memory 2630 for storing program instructions and/or data.
  • Memory 2630 and processor 2620 are coupled.
  • the coupling in the embodiments of the present application is an indirect coupling or 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.
  • the processor 2620 may cooperate with the memory 2630.
  • Processor 2620 may execute program instructions stored in memory 2630. At least one of the at least one memory may be included in the processor.
  • the specific connection medium between the communication interface 2610, the processor 2620, and the memory 2630 is not limited in the embodiments of the present application.
  • the memory 2630, the processor 2620, and the communication interface 2610 are connected through a bus 2640 in FIG. 26.
  • the bus is represented by a thick line in FIG. 26.
  • the connection between other components is only for schematic illustration. , is not limited.
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is shown in FIG. 26, but it does not mean that there is only one bus or one type of bus.
  • a computer-readable storage medium is provided, and an instruction is stored thereon.
  • the instruction is executed, the terminal device side or the first network device side or the second network device in the above method embodiment is executed. side method.
  • a computer program product including an instruction is provided.
  • the instruction is executed, the method on the terminal device side or the first network device side or the second network device side in the above method embodiments is performed.
  • a communication system may include the above-mentioned at least one terminal device and the above-mentioned at least one network device.
  • processors mentioned in the embodiments of the present invention may be a central processing unit (Central Processing Unit, CPU), and may also be other general-purpose processors, digital signal processors (Digital Signal Processors, DSP), application-specific integrated circuits ( Application Specific Integrated Circuit, ASIC), off-the-shelf Programmable Gate Array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory mentioned in the embodiments of the present invention may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically programmable read-only memory (Erasable PROM, EPROM). Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be Random Access Memory (RAM), which acts as an external cache.
  • RAM Static RAM
  • DRAM Dynamic RAM
  • SDRAM Synchronous DRAM
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • enhanced SDRAM ESDRAM
  • synchronous link dynamic random access memory Synchlink DRAM, SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components
  • the memory storage module
  • memory described herein is intended to include, but not be limited to, these and any other suitable types of memory.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本申请实施例提供一种通信方法、设备和装置，涉及无线通信技术领域，用以提高SN变更的可靠性。该方法中终端设备可以接收第一配置信息。如果终端设备的源MCG或源SCG发生RLF，终端设备可以发送第一消息。其中，该第一消息可以包含终端设备接收到第一配置信息开始至源MCG或源SCG发生无线链路失败之间的时间段信息，和/或源MCG或源SCG发生RLF开始至终端设备发送第一消息之间的时间段信息。基于该方案，终端设备接收到第一配置信息后，若源SCG或源MCG发生RLF，终端设备可以上报时间段信息，使得网络设备可以根据终端设备上报的信息，在网络设备间交互合理、有效的信息，进而使得网络设备可以进行参数优化。

Description

一种通信方法、设备和装置 技术领域
本申请涉及无线通信技术领域，尤其涉及一种通信方法、设备和装置。
背景技术
为提高辅基站(secondary node，SN)变更流程的可靠性，提出了条件主辅小区(primary secondary cell，PSCell)变更(conditional PSCell change，CPC)。CPC中，网络设备，如源主小区所属的网络设备，或源主辅小区所属的网络设备，可以通过无线资源控制(radio resource control，RRC)重配置消息给用户设备(user equipment，UE)提供一个或多个候选目标PSCell对应的CPC配置信息。UE在接收到该RRC重配置消息后，可以判断候选PSCell是否满足主辅小区变更执行条件，将满足该主辅小区变更执行条件的PSCell作为目标PSCell。
然而，上述CPC机制中目标PSCell的切换可能失败或成功，另一方面，源主小区所属的网络设备或源主辅小区所属的网络设备会发生无线链路失败。网络需要尽量减少和避免CPC机制中的PSCell切换失败、无线链路失败，以提高SN变更的可靠性。
发明内容
本申请提供一种通信方法、设备和装置，用于提高SN变更的可靠性。
第一方面，本申请实施例提供一种通信方法。该方法可以由终端设备执行，或者类似终端设备的功能的芯片执行。该方法中，终端设备可以接收第一配置信息。这里的第一配置信息可以包含至少一个候选目标主辅小区的信息和对应的主辅小区变更执行条件信息。例如，第一配置信息可以包括候选目标主辅小区的物理小区标识(Physical Cell Identifier，PCI)、全球小区识别码(cell global indentifier，CGI)和频点等信息。终端设备的源MCG或源SCG发生无线链路失败(radio link failure，RLF)，终端设备可以发送第一消息。其中，该第一消息可以包含第一时间段信息。这里的第一时间段信息可以包括以下中的至少一项：所述终端设备接收到所述第一配置信息开始至所述源MCG或所述源SCG发生无线链路失败之间的时间段信息；所述源MCG或所述源SCG发生RLF开始至所述终端设备发送所述第一消息之间的时间段信息。
基于该方案，终端设备接收到第一配置信息后，若源SCG或源MCG发生RLF，终端设备可以记录第一时间段信息，并上报该第一时间段信息，使得网络设备可以根据终端设备上报的信息，在网络设备间交互合理、有效的信息，进而使得网络设备可以进行参数优化。
在一种可能的实现方式中，在源MCG或源SCG发生RLF，且终端设备根据上述第一配置信息确定不存在第一小区或无法确定出第一小区时，发送该第一消息。
基于该方案，如果源MCG或源SCG发生RLF，且至少一个候选目标主辅小区中不存在第一小区，终端设备可以发送第一消息，以使网络设备可以根据终端设备上报的信息，在网络设备间交互合理、有效的信息，进而使得网络设备可以进行参数优化。
在一种可能的实现方式中，在所述源SCG发生RLF之后，终端设备可以根据所述第一配置信息确定出所述第一小区，并且还可以向该第一小区发起接入。如果终端设备成功接入该第一小区，则第一时间段信息还可以包括以下中的至少一项：所述源SCG发生RLF开始至终端设备确定出第一小区之间的时间段信息；终端设备确定出第一小区开始至终端设备成功接入该第一小区之间的时间段信息；终端设备成功该第一小区开始至终端设备发送所述第一消息之间的时间段信息。如果终端设备接入该第一小区失败，且源MCG未发生RLF，则第一时间段信息还可以包括以下中的至少一项：所述源SCG发生RLF开始至所述终端设备确定出所述第一小区之间的时间段信息；所述终端设备确定出所述第一小区开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述终端设备发送所述第一消息之间的时间段信息。如果终端设备接入该第一小区失败，且源MCG发生RLF，则第一时间段信息还可以包括以下中的至少一项：所述源SCG发生RLF开始至所述终端设备确定出所述第一小区之间的时间段信息；所述终端设备确定出所述第一小区开始至所述源MCG发生RLF之间的时间段信息；所述源MCG发生RLF开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述终端设备发送所述第一消息之间的时间段信息。或者，如果终端设备接入该第一小区失败，且源MCG发生RLF，则第一时间段信息还可以包括以下中的至少一项：所述源SCG发生RLF开始至所述终端设备确定出所述第一小区之间的时间段信息；所述终端设备确定出所述第一小区开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述源MCG发生RLF之间的时间段信息；所述源MCG发生RLF开始至所述终端设备发送所述第一消息之间的时间段信息。
基于该方案，终端设备在源SCG发生RLF之后，还可以根据第一配置信息确定出第一小区，并向第一小区发起接入。终端设备可以在成功接入第一小区之后、接入该第一小区失败且源MCG未发生RLF、接入该第一小区失败且源MCG发生RLF等不同的情况下，发送不同的信息，使得网络设备可以根据终端设备上报的信息进行参数优化。
在一种可能的实现方式中，在源MCG或源SCG发生RLF之前，如果终端设备确定出所述第一小区，则第一时间段信息还可以包括以下中的至少一项：所述终端设备接收到所述第一配置信息开始至所述终端设备确定出所述第一小区之间的时间段信息；所述终端设备确定出所述第一小区开始至所述源MCG或所述源SCG发生RLF之间的时间段信息。
基于该方案，如果在源MCG或源SCG发生RLF之前，终端设备确定出第一小区，终端设备可以上报接收到第一配置信息开始至确定出该第一小区之间的时间段信息和/或确定出第一小区至源MCG或源SCG发生RLF的时间段信息，使得网络设备可以根据终端设备上报的信息进行参数优化。
在一种可能的实现方式中，在源MCG或源SCG发生RLF之前，如果终端设备确定出所述第一小区，且终端设备成功接入该第一小区，第一时间段信息还可以包括以下中的至少一项：所述源MCG或所述源SCG发生RLF开始至所述终端设备接入所述第一小区之间的时间段信息；所述终端设备接入所述第一小区开始至所述终端设备发送所述第一消息之间的时间。
基于该方案，如果在源MCG或源SCG发生RLF之前，终端设备确定出第一小区，且成功接入该第一小区，终端设备可以上报源MCG或源SCG发生RLF开始至接入该第 一小区之间的时间段和/或接入该第一小区开始至终端设备发送第一消息之间的时间段信息，使得网络设备根据终端设备上报的信息进行参数优化。
在一种可能的实现方式中，如果在所述源MCG发生RLF之前，所述终端设备确定出所述第一小区，且终端设备接入该第一小区失败，且所述源SCG未发生RLF，则所述第一时间段信息还可以包括以下中的至少一项：所述源MCG发生RLF开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述终端设备发送所述第一消息之间的时间段信息。如果终端设备接入该第一小区失败，且源SCG发生RLF，则第一时间段信息还可以包括以下中的至少一项：所述源MCG发生RLF开始至所述源SCG发生RLF之间的时间段信息；所述源SCG发生RLF开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述终端设备发送所述第一消息之间的时间段信息。或者，如果终端设备接入该第一小区失败，且源SCG发生RLF，则第一时间段信息可以包括以下中的至少一项：所述源MCG发生RLF开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述源SCG发生RLF之间的时间段信息；所述源SCG发生RLF开始至所述终端设备发送所述第一消息之间的时间段信息。
基于该方案，如果在源MCG发生RLF之前，终端设备确定出第一小区，终端设备可以在接入第一小区失败且源SCG未发生RLF、接入第一小区失败且源SCG发生RLF等不同情况，上报不同的信息，使得网络设备可以根据该上报的信息进行参数优化。
在一种可能的实现方式中，如果在源SCG发生RLF之前，终端设备确定出第一小区，且终端设备接入该第一小区失败，且源MCG未发生RLF，则第一时间段信息还可以包括以下中的至少一项：所述源SCG发生RLF开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述终端设备发送所述第一消息之间的时间段信息。或者，如果终端设备与该第一小区接入失败，且源MCG发生RLF，第一时间段信息还可以包括以下中的至少一项：所述源SCG发生RLF开始至所述源MCG发生RLF之间的时间段信息；所述源MCG发生RLF开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述终端设备发送所述第一消息之间的时间段信息。或者，如果终端设备与该第一小区接入失败，且源MCG发生RLF，则第一时间段信息还可以包括以下中的至少一项：所述源SCG发生RLF开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述源MCG发生RLF之间的时间段信息；所述源MCG发生RLF开始至所述终端设备发送所述第一消息之间的时间段信息。
基于该方案，如果在源SCG发生RLF之前，终端设备确定出第一小区，终端设备可以在与该第一小区接入失败且源MCG未发生RLF、与该第一小区接入失败且源MCG发生RLF等不同情况下，上报不同的信息，使得网络设备可以根据终端设备上报的信息进行参数优化。
在一种可能的实现方式中，如果在终端设备成功接入第一小区之后，源MCG或源SCG发生RLF，则第一时间段信息还可以包括以下中的至少一项：所述终端设备接收到所述第一配置信息开始至所述终端设备确定出所述第一小区之间的时间段信息；所述终端设备确定出所述第一小区开始至所述终端设备成功接入所述第一小区之间的时间段信息；所述终端设备成功接入所述第一小区开始至所述源MCG或源SCG发生RLF之间的时间段信息。
基于该方案，终端设备可以在成功接入第一小区之后，上报第一消息，使得终端设备之间交互合理、有效的信息，进而使得网络设备可以进行参数优化。
在一种可能的实现方式中，终端设备还可以发送第一指示信息。该第一指示信息指示源MCG发生RLF或源SCG发生RLF。
基于该方案，终端设备可以通过第一指示信息，向网络设备指示源SCG发生RLF或者源MCG发生RLF，使得网络设备可以进行参数优化。
在一种可能的实现方式中，第一消息还可以包括以下中的至少一项：所述源主小区的小区信息、所述源主辅小区的小区信息、所述至少一个候选目标主辅小区的小区信息、所述终端设备接收到所述第一配置信息的指示信息、所述终端设备确定出所述第一小区或未确定出所述第一小区的指示信息、所述终端设备成功接入所述第一小区或接入所述第一小区失败的指示信息。
基于该方案，终端设备还可以向网络设备上报源主小区的小区信息、源主辅小区的小区信息、至少一个候选目标主辅小区的小区信息，使得网络设备可以知道小区的信息，进而对相应小区对应的移动性参数进行优化。
在一种可能的实现方式中，终端设备还可以发送第二指示信息。终端设备还可以接收响应于该第二指示信息的请求消息。该请求消息请求终端设备发送所述第一消息。终端设备可以根据该请求消息，发送第一消息。
基于该方案，终端设备可以记录第一消息，并在网络设备请求该第一消息时上报第一消息。
第二方面，提供了一种通信方法。该方法可以由网络设备或者类似于网络设备的功能的芯片执行。该方法中，第一网络设备可以接收终端设备发送的第一消息。该第一消息中可以包括所述终端设备的第一时间段信息；所述第一时间段信息包括以下中的至少一项：所述终端设备接收到所述第一配置信息开始至所述源MCG或所述源SCG发生无线链路失败之间的时间段信息；所述源MCG或所述源SCG发生RLF开始至所述终端设备发送所述第一消息之间的时间段信息。第一网络设备可以向第二网络设备发送第二消息。该第二消息可以包括第一消息中的部分或全部。其中，所述第一网络设备是管理源主小区的网络设备，且所述第二网络设备是管理源主辅小区的网络设备；或者，所述第一网络设备是管理源主小区的网络设备，且所述第二网络设备是管理至少一个候选目标主辅小区的网络设备；或者，所述第一网络设备是管理源主辅小区的网络设备，且所述第二网络设备是管理源主小区的网络设备；或者，所述第一网络设备是管理源主辅小区的网络设备，且所述第二网络设备是管理至少一个候选目标主辅小区的网络设备；或者，所述第一网络设备是为所述终端设备提供通信的网络设备，所述第二网络设备是管理源主小区的网络设备；或者，所述第一网络设备是为所述终端设备提供通信的网络设备，所述第二网络设备是管理源主辅小区的网络设备；或者，所述第一网络设备是为所述终端设备提供通信的网络设备，所述第二网络设备是管理至少一个候选目标主辅小区的网络设备；所述至少一个候选目标主辅小区是管理所述终端设备的源主小区的网络设备为所述终端设备配置的。
基于该方案，网络设备之间可以交互第一消息中的部分或全部，进而进行移动性参数优化，例如，优化CPC相关参数(例如，优化包含在第一配置信息中的候选目标主辅小区所对应的参数，具体的，可以改变候选目标主辅小区的信息，和/或，改变主辅小区变更执行条件信息；或者，可以将包含在第一配置信息中的候选目标主辅小区删除，和/或，新增 其他小区作为候选目标主辅小区)，提高终端设备变更SN的可靠性。
在一种可能的实现方式中，第二消息还可以包括第一信息。该第一信息指示发生过晚CPC。这里的过晚CPC可以是网络设备向终端设备发送第一配置信息的时间过晚。
基于该方案，网络设备可以根据第二消息确定发生了过晚CPC，进而进行移动性参数优化，提高终端设备变更SN的可靠性。
在一种可能的实现方式中，第一网络设备可以根据第一时间段信息，确定源SCG或源MCG发生RLF。第一网络设备可以释放所述源SCG和/或所述源MCG、或者所述第一网络设备更改SCG和/或MCG、或者所述第一网络设备保持所述源SCG和/或所述源MCG不变化。这里的第一网络设备可以是管理源主小区的网络设备。
基于该方案，第一网络设备还可以根据终端设备上报的信息确定源SCG或源MCG发生RLF，因此可以释放源SCG或源MCG，或者更改SCG或MCG，或者还可以保持源SCG或源MCG，提高系统可靠性。
在一种可能的实现方式中，第一网络设备还可以接收终端设备发送的第二指示信息。第一网络设备可以响应于该第二指示信息，向终端设备发送请求消息。这里的请求消息请求第一消息。第一网络设备可以接收终端设备发送的第一消息。
基于该方案，第一网络设备可以根据第二指示信息确定终端设备已记录第一消息，并可以请求终端设备上报第一消息。
第三方面，本申请实施例还提供一种通信方法。该方法可以由第二网络设备执行，或者由类似与第二网络设备的功能的芯片执行。该方法中，第二网络设备可以接收第一网络设备发送的第二消息。其中，第二消息中可以包含所述终端设备的第一时间段信息。这里的第一时间段信息可以包括以下中的至少一项：所述终端设备接收到所述第一配置信息开始至所述源MCG或所述源SCG发生无线链路失败之间的时间段信息；所述源MCG或所述源SCG发生RLF开始至所述终端设备发送所述第一消息之间的时间段信息。第二网络设备还可以向第三网络设备发送第三消息。该第三消息包含所述第二消息中的部分或全部。其中，所述第一网络设备是为所述终端设备提供通信的网络设备；所述第二网络设备是管理所述至少一个候选目标主辅小区的网络设备，所述第三网络设备是管理所述源主小区的网络设备或者管理所述源主辅小区的网络设备。
基于该方案，网络设备之间可以交互第二消息中的部分或全部，进而进行移动性参数优化，例如，优化CPC相关参数(例如，优化包含在第一配置信息中的候选目标主辅小区所对应的参数，具体的，可以改变候选目标主辅小区的信息，和/或，改变主辅小区变更执行条件信息；或者，可以将包含在第一配置信息中的候选目标主辅小区删除，和/或，新增其他小区作为候选目标主辅小区)，提高终端设备变更SN的可靠性。
在一种可能的实现方式中，第三消息可以包括第一信息，所述第一信息指示发生过晚CPC。
基于该方案，网络设备可以根据第三消息确定发生了过晚CPC，进而进行移动性参数优化，提高终端设备变更SN的可靠性。
第四方面，提供了通信装置，通信装置可以包括用于执行第一方面或第一方面任一种可能实现方式中的各个模块/单元，或者还可以包括用于执行第二方面或第二方面任一种可能实现方式中的各个模块/单元或者还可以包括用于执行第三方面或第三方面任一种可能实现方式中的各个模块/单元。该通信装置可以是终端或者用于终端的芯片。
第五方面，提供了一种通信装置，通信装置包括处理器和存储器。存储器用于存储计算机执行指令，控制器运行时，处理器执行存储器中的计算机执行指令以利用控制器中的硬件资源执行第一方面或第一方面任一种可能实现方式中方法的操作步骤，或者执行第二方面或第二方面任一种可能实现方式中方法的操作步骤，或者执行第三方面或第三方面任一种可能实现方式中方法的操作步骤。该通信装置可以是网络设备或者用于网络设备的芯片，该网络设备可以是基站。
第六方面，本申请提供一种计算机可读存储介质，计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述各方面的方法。
第七方面，本申请提供了一种存储指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述各方面的方法。
另外，第四方面至第七方面的有益效果可以案件如第一方面和第二方面所示的有益效果。
附图说明
图1为本申请实施例提供的通信系统；
图2为本申请实施例提供的通信方法的示例性流程图之一；
图3为本申请实施例提供的第一时间段信息示意图之一；
图4为本申请实施例提供的通信方法的示例性流程图之一；
图5为本申请实施例提供的第一时间段信息示意图之一；
图6为本申请实施例提供的第一时间段信息示意图之一；
图7为本申请实施例提供的第一时间段信息示意图之一；
图8为本申请实施例提供的第一时间段信息示意图之一；
图9为本申请实施例提供的通信方法的示例性流程图之一；
图10为本申请实施例提供的第一时间段信息示意图之一；
图11为本申请实施例提供的第一时间段信息示意图之一；
图12为本申请实施例提供的通信方法的示例性流程图之一；
图13为本申请实施例提供的第一时间段信息示意图之一；
图14为本申请实施例提供的第一时间段信息示意图之一；
图15为本申请实施例提供的第一时间段信息示意图之一；
图16为本申请实施例提供的通信方法的示例性流程图之一；
图17为本申请实施例提供的第一时间段信息示意图之一；
图18为本申请实施例提供的第一时间段信息示意图之一；
图19为本申请实施例提供的第一时间段信息示意图之一；
图20为本申请实施例提供的通信方法的示例性流程图之一；
图21为本申请实施例提供的第一时间段信息示意图之一；
图22为本申请实施例提供的通信方法的示例性流程图之一；
图23为本申请实施例提供的终端设备的示意图之一；
图24为本申请实施例提供的终端设备的示意图之一；
图25为本申请实施例提供的网络设备的示意图之一；
图26为本申请实施例提供的通信装置的框图。
具体实施方式
以下，对本申请实施例中的部分用语进行解释说明，以便于本领域技术人员理解。
1)小区，指移动通信系统中，其中的一个网络设备或网络设备的一部分所覆盖的区域。这里的一个网络设备可以称为管理小区的网络设备。
2)过晚条件主辅小区变更(conditional PSCell change，CPC)，指网络设备发送用于CPC流程的消息较晚，导致终端设备无法进行主辅小区的切换。例如，如源主小区所属的网络设备(称为源主网络设备)，或源主辅小区所属的网络设备(称为源辅网络设备)，向终端设备发送第一配置信息的时间较晚，导致终端设备在接收到第一配置信息前，或在确定出第一小区前，或在成功接入该第一小区前，源MCG(或源主网络设备)或源SCG(或源辅网络设备)发生RLF。
3)本申请实施例中的术语“系统”和“网络”可被互换使用。“多个”是指两个或两个以上，其它量词与之类似。“和/或”描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。此外，对于单数形式“a”，“an”和“the”出现的元素(element)，除非上下文另有明确规定，否则其不意味着“一个或仅一个”，而是意味着“一个或多于一个”。例如，“a device”意味着对一个或多个这样的device。再者，至少一个(at least one of).......”意味着后续关联对象中的一个或任意组合，例如“A，B和C中的至少一个”包括A，B，C，AB，AC，BC，或ABC。
本申请实施例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，全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统，未来的第五代(5th Generation，5G)系统，如新一代无线接入技术(new radio access technology，NR)，及未来的通信系统，如6G系统等。
本申请将围绕可包括多个设备、组件、模块等的系统来呈现各个方面、实施例或特征。应当理解和明白的是，各个系统可以包括另外的设备、组件、模块等，并且/或者可以并不包括结合附图讨论的所有设备、组件、模块等。此外，还可以使用这些方案的组合。
本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
本申请实施例既可以应用在传统的典型网络中，也可以应用在未来的以UE为中心(UE-centric)的网络中。UE-centric网络引入无小区(Non-cell)的网络架构，即在某个特定的区域内部署大量小站，构成一个超级小区(Hyper cell)，每个小站为Hyper cell的一个传输点(Transmission Point,TP)或传输接收点(Transmission and Reception Point,TRP)，并与一个集中控制器(controller)相连。当UE在Hyper cell内移动时，网络侧设备时时为UE选择新的sub-cluster(子簇)为其服务，从而避免真正的小区切换，实现UE业务的连续性。其中，网络侧设备包括无线网络设备。或者是，在以UE为中心的网络中，多个网络侧设备，如小站，可以有独立的控制器，如分布式控制器，各小站能够独立调度用户，小站之间在长期上存在交互信息，使得在为UE提供协作服务时，也能够有一定的灵活性。
本申请实施例中不同基站可以为具有不同的标识的基站，也可以为具有相同的标识的被部署在不同地理位置的基站。由于在基站被部署前，基站并不会知道其是否会涉及本申请实施例所应用的场景，因而，基站，或基带芯片，都应在部署前就支持本申请实施例所 提供的方法。可以理解的是，前述具有不同标识的基站可以为基站标识，也可以为小区标识或者其他标识。
本申请实施例中部分场景以无线通信网络中NR网络的场景为例进行说明，应当指出的是，本申请实施例中的方案还可以应用于其他无线通信网络中，相应的名称也可以用其他无线通信网络中的对应功能的名称进行替代。
本申请实施例提供的技术方案可以应用于通信设备间的无线通信。通信设备间的无线通信可以包括：网络设备和终端设备间的无线通信、网络设备和网络设备间的无线通信以及终端设备和终端设备间的无线通信。其中，在本申请实施例中，术语“无线通信”还可以简称为“通信”，术语“通信”还可以描述为“数据传输”、“信息传输”或“传输”。
为便于理解本申请实施例，首先以图1示出的通信系统为例详细说明适用于本申请实施例的通信系统。图1示出了适用于本申请实施例的通信方法的通信系统的示意图。如图1所示，该通信系统100包括第一网络设备102、第二网络设备104和第三网络设备106，以及终端设备101。第一网络设备102、第二网络设备104和第三网络设备106可以配置有多个天线，终端设备也可配置有多个天线。可选地，该通信系统还可以包括终端设备103(图中未示出)。
在该通信系统100中，第一网络设备102可以是管理终端设备101的源MCG的网络设备，第二网络设备104可以是管理终端设备的源SCG的网络设备，第三网络设备106可以是管理候选目标主辅小区之一的网络设备。其中，第一网络设备102或第二网络设备104可以通过第一配置信息为终端设备101配置目标主辅小区。其中，该第一配置信息可以包括至少一个候选目标主辅小区的信息和对应的主辅小区变更执行条件信息。终端设备101可以根据该第一配置信息确定满足主辅小区变更执行条件的第一小区。其中，该第一小区属于前述第三网络设备106。终端设备则可以向第三网络设备106发起接入。
终端设备101与第三网络设备106的接入可能失败，也可能成功。在终端设备与第三网络设备106接入失败，且源SCG或源MCG发生RLF时，终端设备可以向第一网络设备102、第二网络设备104或第三网络设备106上报第一消息。第一网络设备102、第二网络设备104和第三网络设备106可以交互合理且有效的信息，进行参数优化，从而提高终端设备101进行SN变更的可靠性。
本申请涉及的终端设备，包括向用户提供语音和/或数据连通性的设备，具体的，包括向用户提供语音的设备，或包括向用户提供数据连通性的设备，或包括向用户提供语音和数据连通性的设备。例如可以包括具有无线连接功能的手持式设备、或连接到无线调制解调器的处理设备。该终端可以经无线接入网(radio access network，RAN)与核心网进行通信，与RAN交换语音或数据，或与RAN交互语音和数据。该终端可以包括用户设备(user equipment，UE)、无线终端、移动终端、设备到设备通信(device-to-device，D2D)终端、车到一切(vehicle to everything，V2X)终端、机器到机器/机器类通信(machine-to-machine/machine-type communications，M2M/MTC)终端、物联网(internet of things，IoT)终端、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、远程站(remote station)、接入点(access point，AP)、远程终端(remote terminal)、接入终端(access terminal)、用户终端(user terminal)、用户代理(user agent)、或用户装备(user device)等。例如，可以包括移动电话(或称为“蜂窝”电话)，具有移动终端的计算机，便携式、袖珍式、手持式、计算机内置的移动装置等。例如，个人通信业务(personal communication  service，PCS)电话、无绳电话、会话发起协议(session initiation protocol，SIP)话机、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、等设备。还包括受限设备，例如功耗较低的设备，或存储能力有限的设备，或计算能力有限的设备等。例如包括条码、射频识别(radio frequency identification，RFID)装置、传感器、全球定位系统(global positioning system，GPS)、激光扫描器等信息传感设备。
作为示例而非限定，在本申请实施例中，该终端还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备或智能穿戴式设备等，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能头盔、智能首饰等。
而如上介绍的各种终端，如果位于车辆上(例如放置在车辆内或安装在车辆内)，都可以认为是车载终端，车载终端例如也称为车载单元(on-board unit，OBU)。
本申请实施例中，用于实现终端的功能的装置可以是终端，也可以是能够支持终端实现该功能的装置，例如芯片系统，该装置可以被安装在终端中。本申请实施例中，芯片系统可以由芯片构成，也可以包括芯片和其他分立器件。本申请实施例提供的技术方案中，以用于实现终端的功能的装置是终端为例，描述本申请实施例提供的技术方案。
本申请所涉及的网络设备，例如包括接入网(access network，AN)设备，例如基站(例如，接入点)，可以是指接入网中在空口通过一个或多个小区与无线终端通信的设备，或者例如，一种车到一切(vehicle-to-everything，V2X)技术中的网络设备为路侧单元(road side unit，RSU)。基站可用于将收到的空中帧与IP分组进行相互转换，作为终端与接入网的其余部分之间的路由器，其中接入网的其余部分可包括IP网络。RSU可以是支持V2X应用的固定基础设施实体，可以与支持V2X应用的其他实体交换消息。网络设备还可协调对空口的属性管理。例如，网络设备可以包括长期演进(long term evolution，LTE)系统或高级长期演进(long term evolution-advanced，LTE-A)中的演进型基站(NodeB或eNB或e-NodeB，evolved Node B)，或者也可以包括演进的分组核心网络(evolved packet core，EPC)、第五代移动通信技术(the 5th generation，5G)、新空口(new radio，NR)系统中的下一代节点B(next generation node B，gNB)或者也可以包括云接入网(cloud radio access network，Cloud RAN)系统中的集中式单元(centralized unit，CU)和分布式单元(distributed unit，DU)，本申请实施例并不限定。
网络设备还可以包括核心网设备，核心网设备例如包括访问和移动管理功能(access and mobility management function，AMF)等。
本申请实施例中，用于实现网络设备的功能的装置可以是网络设备，也可以是能够支持网络设备实现该功能的装置，例如芯片系统，该装置可以被安装在网络设备中。在本申请实施例提供的技术方案中，以用于实现网络设备的功能的装置是网络设备为例，描述本申请实施例提供的技术方案。
应理解，本申请的技术方案可以应用于多无线双连接(multiple radio dual connectivity，MR-DC)通信系统。DC是指支持两个基站同时为一个终端设备提供数据传输服务，其中 PCell所在的基站称为主基站，主辅小区(primary secondary cell，PSCell)所在的基站称为辅基站。其中，MR-DC包含EN-DC、NE-DC、NGEN-DC等架构。这里的EN-DC是以LTE基站作为主基站，NR基站作为辅基站进行双连接，并且主站和辅基站都连接4G核心网(evolved packet core，EPC)的架构。NE-DC是以NR基站作为主基站，LTE基站作为辅基站进行双连接，并且主基站和辅基站都连接5G核心网的架构。NGEN-DC是以LTE基站作为主基站，NR基站作为辅基站进行双连接的架构，与EN-DC不同的是主基站和辅基站都连接5G核心网。该通信系统中的网络设备可以对应于图1中示出的第一网络设备102、第二网络设备104或第三网络设备106，终端设备可以对应于图1中示出的终端设备101。其中，终端设备101可以与第一网络设备102和第二网络设备104进行连接，第一网络设备102可以是主基站，第二网络设备104可以是辅基站。第一网络设备102中的多个服务小区组成主小区组(master cell group，MCG)，第二网络设备104中的多个服务小区组成辅小区组(secondary cell group，SCG)。
以下，不失一般性的，以一个终端设备与网络设备之间的交互过程为例详细说明本申请实施例，该终端设备可以为处于无线通信系统中与网络设备具有无线连接关系的终端设备。可以理解的是，网络设备可以与处于该无线通信系统中的具有无线连接关系的多个终端设备基于相同的技术方案进行通信。本申请对此并不做限定。
图2是从设备交互的角度示出的本申请实施例提供的通信方法的示例性流程图。如图2所示，该方法可以包括：
步骤201：终端设备接收第一配置信息。
其中，终端设备可以从网络设备接收该第一配置信息。如果是主基站发起的主辅小区变更，则终端设备可以从源主基站接收第一配置信息，如果是辅基站发起的主辅小区变更，则终端设备可以从源辅基站接收第一配置信息。这里的第一配置信息包含至少一个候选目标主辅小区的信息和对应的主辅小区变更执行条件信息。第一配置信息用于确定第一小区。应理解，该第一小区是至少一个候选目标主辅小区中满足主辅小区变更执行条件的小区。终端设备也可以根据第一配置信息确定至少一个候选目标主辅小区中是否有满足主辅小区变更执行条件的小区，即确定是否存在第一小区。以下，对至少一个候选目标主辅小区的信息和对应的主辅小区变更执行条件信息进行解释和说明。
1、候选目标主辅小区的信息：可以包括每一个候选目标主辅小区的标识信息。例如，可以是测量标识(measurement identifier，measID)，或者可以是配置标识(如condReconfigId)，或者可以是物理小区标识(physical cell identifier，PCI)，或者还可以是小区全球标识(Cell Global Identity，CGI)。候选目标主辅小区的信息还可以包括每一个候选目标主辅小区的小区索引(如cell index)、每一个候选目标主辅小区为终端设备分配的小区无线网络临时标识(cell–radio network temporary identifier，C-RNTI)、接入候选目标主辅小区所需的随机接入信道(random access channel，RACH)资源、每一个候选目标主辅小区的频率信息、或每一个候选目标主辅小区的物理层配置参数、媒体访问控制(media access control，MAC)层配置参数、无线链路控制层(radio link control，RLC)层配置参数、分组数据汇聚协议(packet data convergence protocol，PDCP)层配置参数、业务数据适配协议(service data adaption protocol，SDAP)层配置参数或无线资源控制(radio resource control，RRC)层配置参数等中的至少一个。
2、主辅小区变更执行条件：可以包括主辅小区变更执行事件类型和相应的门限值。 主辅小区变更事件类型可以包括事件A3、事件A5或其他执行事件类型。每一个候选目标主辅小区对应有一个或多个主辅小区变更执行条件。例如，一个候选目标主辅小区可以被配置一个执行事件类型，且可以被配置至少一个门限值和/或至多两个不同的触发质量(trigger quantity)。该触发质量可以包括参考信号接收功率(reference signal received power，RSRP)、参考信号接收质量(reference signal received quality，RSRQ)或信号噪声干扰比(signal to interference plus noise ratio，SINR)。其中，终端设备可以根据第一配置信息进行候选目标主辅小区是否满足主辅小区变更执行条件的判断。
例如，网络设备为候选目标主辅小区A配置的主辅小区变更执行事件类型是A3事件，且配置的对应门限值为第一阈值。则，终端设备可以在候选目标主辅小区A的小区信号质量比源主辅小区的小区信号质量高第一阈值时，认为候选目标主辅小区A满足主辅小区变更条件。换句话说，终端设备可以确定候选目标主辅小区A为第一小区。其中，小区信号质量可以包括RSRP、RSRQ、SINR中的至少一项。
步骤202：终端设备的源主小区组MCG或源辅小区组SCG发生无线链路失败，终端设备发送第一消息。
其中，终端设备可以向网络设备发送第一消息。这里的网络设备可以是源主基站(源主网络设备)也可以是源辅基站(源辅网络设备)，或者还可以是管理第一小区的基站，或者还可以是当前为终端设备提供通信服务的基站。可选地，在一个实施方式中，终端设备可以在记录第一消息后，向网络设备发送第二指示信息。该第二指示信息可以通知网络设备：终端设备已记录第一消息，或者可以用于触发网络设备发送请求消息。该请求消息用于请求第一消息。网络设备在接收到第二指示信息后，可以向终端设备发送前述请求消息。那么，终端设备则可以根据该请求消息，向网络设备发送该第一消息。
这里的第一消息中可以包含第一时间段信息。第一时间段信息可以是以下中的至少一项：终端设备接收到第一配置信息开始至源MCG或源SCG发生RLF之间的时间段信息T1或源MCG或源SCG发生RLF开始至终端设备发送第一消息之间的时间段信息T2。
本发明方案中，源MCG发生RLF可以指源PCell和/或属于源主网络设备的至少一个SCell发生RLF，源SCG发生RLF可以指源PSCell和/或属于源辅网络设备的至少一个SCell发生RLF。
如图3所示，终端设备在t1时刻接收到第一配置信息，在t2时刻源MCG或源SCG发生RLF，在t3时刻发送第一消息。因此，该第一消息中可以包含T1或T2或者T1和T2。应理解，本申请实施例中的图中线段的长短并不能表示时间段的长短，如图3中表示T2的线段长于表示T1的线段，但并不能够表示T2长于T1，图中的时间段信息仅是示例性的。
另外需要说明的是，源MCG或源SCG发生RLF的具体时刻的不同会导致第一时间段信息的不同。以下，根据源MCG或源SCG发生RLF的时间介绍第一时间段信息。
示例一、在源MCG或源SCG发生RLF时不存在第一小区。
其中，不存在第一小区可以是在源MCG或源SCG发生RLF时不存在第一小区，或者，在源MCG或源SCG发生RLF之前，终端设备未能根据第一配置信息确定出第一小区。该场景中，终端设备可以发送如图3所示的第一时间段信息。例如，第一时间段信息可以包含T1或者T2或者T1和T2。
其中，第一网络设备在接收到终端设备发送的该第一消息时，第一网络设备可以向第 二网络设备发送第二消息。该第二消息可以包含第一消息的部分或全部。如图4所示，为终端设备与网络侧通信的示例性流程图，可以包括以下步骤：
步骤401：终端设备向第一网络设备发送第一消息。
这里的第一消息可以包括如图3所示的第一消息。例如，第一时间段信息可以包含T1或者T2或者T1和T2。
第一消息中，还可以包含源MCG或源SCG发生RLF的指示信息。可选地，第一消息中还可以包含源PCell和/或源PSCell和/或至少一个候选目标主辅小区的小区信息，其中，所述的小区信息包括以下至少一项：PCI、频率信息、CGI、标识信息(如测量标识、配置标识)。可选地，第一消息中还可以包含小区的信号质量，如源MCG发生RLF时，以下至少一个小区的信号质量：源PCell、源PSCell、至少一个候选目标主辅小区。可选地，第一消息中还可以包含所述终端设备接收到所述第一配置信息的指示信息。可选地，第一消息中还可以包含所述终端设备未确定出所述第一小区的指示信息。可选地，第一消息中还可以包含至少一个候选目标主辅小区的信息、对应的主辅小区变更执行条件信息。
步骤402：第一网络设备向第二网络设备发送第二消息。
这里的第二消息可以包含上述第一消息的部分或全部。例如，第二消息可以包含如图3所示的第一时间段信息。其中，如果是管理源SCG的源SN(即源辅网络设备)发起的CPC，且源MCG发生RLF，那么第一网络设备可以是管理源SCG的源SN，第二网络设备可以是管理源MCG的源MN(即源主网络设备)，或者还可以是管理候选目标主辅小区的候选SN(即候选辅网络设备)。例如，源SN可以向源MN和/或候选SN发送第二消息，或者源SN可以向源MN发送第二消息，源MN可以向候选SN转发包含在第二消息中的部分或全部。源MN在接收到该第二消息后，可以进行MN的重新配置。例如，可以更换MN(如将其他网络设备配置成新的主网络设备)，或者可以更换MCG，而保持MN不变化(如将源MN下的其他小区配置成新的PCell)，或者，可以释放源MN(如释放源MCG配置信息)。候选SN在接收到上述第二消息后，可以进行CPC参数调整，例如，候选SN可以调整第一配置信息。上述第二消息还可以包含第一信息。该第一信息可以指示发生过晚CPC，即源SN收到第一消息后，认为发生过晚CPC，源SN发送的第二消息中可以包含第一信息。可选地，若是源SN向终端设备发送的第一配置信息，则源SN可以调整触发源MN与候选SN进行CPC准备流程的时间、调整主辅小区变更执行条件信息、调整发送第一配置信息的时间。在源MN或者候选SN接收到指示发生过晚CPC的第一信息时，可选地，若是源MN向终端设备发送的第一配置信息，则源MN可以根据该第一信息，调整与候选SN进行CPC准备的时间、发送第一配置信息的时间，候选SN可以调整至少一个候选目标主辅小区的信息、配置候选目标主辅小区的信息的时间。
如果是源SN发起的CPC，且源SCG发生RLF，该第一网络设备可以是源MN，第二网络设备可以是源SN，或者还可以是候选SN。可选的，源MN在接收到上述第一消息后，可以根据第一消息判断出发生过晚CPC，因此，源MN向第二网络设备(如源SN)发送的第二消息中还可以包含指示发生过晚CPC的第一信息。若是源MN向终端设备发送的第一配置信息，则源MN可以根据第一消息，调整与候选SN进行CPC准备的时间、发送第一配置信息的时间，源MN还可以释放源SN(如释放源SCG配置信息)；或者源MN还可以保持源SN不变，例如，源MN可以更换SCG或PSCell，而更换后的SCG/PSCell仍然属于源SN；或者，源MN还可以更改SN，例如，将其他网络设备配置成新的辅网络 设备。源SN接收到源MN发送的上述第二消息后，可以认为发生过晚CPC，可以调整触发源MN与候选SN进行CPC准备流程的时间、主辅小区变更执行条件信息、发送第一配置信息的时间，候选SN在接收到源MN发送的或经由源SN转发的上述第二消息后，可以进行CPC参数调整，例如，候选SN可以调整至少一个候选目标主辅小区的信息、配置候选目标主辅小区的信息的时间。
如果是源MN发起的CPC，且源MCG发生RLF，那么第一网络设备可以是源SN，第二网络设备可以是源MN。源MN在接收到第二消息后，可以根据第二消息判断出发生过晚CPC。例如，可以根据第二消息中的第一时间段信息判断出发生过晚CPC。这里的过晚CPC可以指网络设备发送用于CPC流程的消息(如第一配置信息)较晚，导致终端设备无法进行主辅小区的切换。若是源MN向终端设备发送的第一配置信息，则，源MN可以调整与候选SN进行CPC准备的时间、主辅小区变更执行条件信息、发送第一配置信息的时间。另一方面，由于源MCG发生RLF，源MN还可以调整MN，例如，源MN可以更换MN(如将其他网络设备配置成新的主网络设备)，或者可以更换MCG而保持MN不变化(如将源MN下的其他小区配置成新的PCell)，或者，可以释放源MN(如释放源MCG配置信息)。源MN还可以向候选SN转发上述第二消息。该第二消息可以包含指示发生过晚CPC的第一信息。候选SN在接收到上述第二消息后，可以进行CPC参数调整，例如，可以调整至少一个候选目标主辅小区的信息，或者，候选SN还可以调整配置候选目标主辅小区的信息的时间。
如果是源MN发起的CPC，且源SCG发生RLF，则该第一网络设备可以是源MN，该第二网络设备可以是源SN。源MN接收到第一消息后，源MN可以释放源SN，或者源MN可以更换SCG或PSCell，而更换后的SCG/PSCell仍然属于源SN；或者，源MN还可以更改SN，例如，将其他网络设备配置成新的辅网络设备。另外，源MN可以判断出发生过晚CPC，若是源MN向终端设备发送的第一配置信息，则，源MN可以调整与候选SN进行CPC准备的时间、主辅小区变更执行条件信息、发送第一配置信息的时间。源SN在接收到源MN发送的第二消息后，可以根据第二消息中的过晚CPC指示信息，调整触发CPC的时间。可选地，该第二网络设备还可以是候选SN，候选SN在接收到上述第二消息后，可以进行CPC参数调整，例如，可以调整至少一个候选目标主辅小区的信息。
可选地，候选SN接收到第二消息后，可以向源MN或源SN发送第三消息，所述第三消息可以包括所述第二消息的部分或全部，可选地，所述第三消息可以包括第二信息，所述第二信息指示发生过晚CPC。
示例二、终端设备确定出第一小区之前，源SCG发生RLF。
如果在确定出第一小区之前，源SCG发生RLF，终端设备还可以继续根据第一配置信息判断是否存在第一小区，一种可能，源SCG发生RLF后，终端设备确定出第一小区，并向第一小区发起接入。需要说明的是，根据终端设备是否成功接入第一小区，第一时间段信息可以分为以下三种情况：
1)终端设备成功接入第一小区。
如果终端设备成功接入第一小区，如图5所示，第一时间段信息还可以包括以下中的至少一项：
终端设备接收到所述第一配置信息开始至源SCG发生RLF之间的时间段信息T1；源SCG发生RLF开始至终端设备确定出第一小区之间的时间段信息T3；终端设备确定出第 一小区开始至终端设备成功接入第一小区之间的时间段信息T4；终端设备成功接入第一小区开始至终端设备发送第一消息之间的时间段信息T5；源SCG发生RLF开始至终端设备发送第一消息之间的时间段信息T2。例如，该第一时间段信息可以是T1、T2、T3和T4，或者该第一时间段信息可以是T1、T2、T3、T4和T5，或者该第一时间段信息可以是T1、T3、T4和T5，或者该第一时间段信息可以是T1和T2。
另外需要说明的是，本申请实施例中的第一时间段信息仅是示例性的，并非是对第一时间段信息的限定。应理解，第一时间段信息可以是终端设备接收到第一配置信息开始至终端设备上报第一消息之间的时间段信息的其他变形。例如，可以是终端设备接收到第一配置信息开始至终端设备上报第一消息之间的各个时间段的组合，或者终端设备接收到第一配置信息开始至上报第一消息之间的整段时间段信息等。
该场景下，第一消息中还可以包含源PCell和/或源PSCell和/或第一小区和/或除第一小区外的其他候选目标主辅小区的小区信息，其中，所述的小区信息包括以下至少一项：PCI、频率信息、CGI、标识信息(如测量标识、配置标识)。可选地，第一消息中还可以包含小区的信号质量，如源SCG发生RLF时、终端设备成功接入到第一小区时，以下至少一个小区的信号质量：源PCell、源PSCell、第一小区、除第一小区外的候选目标主辅小区。第一消息中，还可以包含源SCG发生RLF的指示信息。可选地，第一消息中还可以包含所述终端设备接收到所述第一配置信息的指示信息。可选地，第一消息中还可以包含所述终端设备确定出所述第一小区的指示信息。可选地，第一消息中还可以包含所述终端设备成功接入所述第一小区的指示信息。可选地，第一消息中还可以包含至少一个候选目标主辅小区的信息、对应的主辅小区变更执行条件信息。
该场景下，第一网络设备可以是第一小区所属的网络设备(即目标SN)，或者是为终端设备提供通信的网络设备。第二网络设备可以是源辅网络设备(即源SN，或管理源SCG的网络设备)，或者是候选SN。
2)终端设备接入第一小区失败，且源MCG未发生RLF。
如果终端设备接入第一小区失败，且源MCG未发生RLF，如图6所示，第一时间段信息还可以包括以下中的至少一项：
终端设备接收到所述第一配置信息开始至源SCG发生RLF之间的时间段信息T1；源SCG发生RLF开始至终端设备确定出第一小区之间的时间段信息T3；终端设备确定出第一小区开始至终端设备与第一接入失败之间的时间段信息T4；终端设备与第一小区接入失败开始至终端设备发送第一消息之间的时间段信息T5；源SCG发生RLF开始至终端设备发送第一消息之间的时间段信息T2。如，该第一时间段信息可以是T1、T3、T4和T5。或者该第一时间段信息可以是T1、T2、T3、T4和T5。或者还可以是其他变形，不做具体限定。
该场景下，第一消息中还可以包含源PCell和/或源PSCell和/或第一小区和/或除第一小区外的其他候选目标主辅小区的小区信息，其中，所述的小区信息包括以下至少一项：PCI、频率信息、CGI、标识信息(如测量标识、配置标识)。可选地，第一消息中还可以包含小区的信号质量，如源SCG发生RLF时、终端设备与第一小区接入失败时，以下至少一个小区的信号质量：源PCell、源PSCell、第一小区、除第一小区外的候选目标主辅小区。第一消息中，还可以包含源SCG发生RLF的指示信息。第一消息中，还可以包含源MCG未发生RLF的指示信息。可选地，第一消息中还可以包含所述终端设备接收到所 述第一配置信息的指示信息。可选地，第一消息中还可以包含所述终端设备确定出所述第一小区的指示信息。可选地，第一消息中还可以包含所述终端设备接入所述第一小区失败的指示信息。可选地，第一消息中还可以包含至少一个候选目标主辅小区的信息、对应的主辅小区变更执行条件信息。
该场景下，第一网络设备可以是源MN，或者是为终端设备提供通信的网络设备。第二网络设备可以是第一小区所属的网络设备，或者是源SN。
3)终端设备接入第一小区失败，且源MCG发生RLF。
在一种实现方式中，如果终端设备接入第一小区失败，且源MCG发生RLF，如图7所示，第一时间段信息可以包括以下中的至少一项：
终端设备接收到所述第一配置信息开始至源SCG发生RLF之间的时间段信息T1；源SCG发生RLF开始至终端设备确定出第一小区之间的时间段信息T3；终端设备确定出第一时间段信息开始至源MCG发生RLF之间的时间段信息T4；源MCG发生RLF开始至终端设备接入第一小区失败之间的时间段信息T5；终端设备接入第一小区失败开始至终端设备发送第一消息之间的时间段信息T6；源SCG发生RLF开始至终端设备发送第一消息之间的时间段信息T2。例如，该第一时间段信息可以是T1、T3、T4、T5和T6。或者该第一时间段信息可以是T1、T2、T3、T4、T5和T6。或者还可以是其他变形，不做具体限定。
在另一种实现方式中，如果终端设备接入第一小区失败，且源MCG发生RLF，如图8所示，第一时间段信息可以包括以下中的至少一项：
终端设备接收到所述第一配置信息开始至源SCG发生RLF之间的时间段信息T1；源SCG发生RLF开始至终端设备确定出第一小区之间的时间段信息T3；终端设备确定出第一小区开始至终端设备与第一小区接入失败之间的时间段信息T4；终端设备与第一小区接入失败开始至源MCG发生RLF之间的时间段信息T5；源MCG发生RLF开始至终端设备发送第一消息之间的时间段信息T6；源SCG发生RLF开始至终端设备发送第一消息之间的时间段信息T2。例如，该第一时间段信息可以是T1、T3、T4、T5和T6。或者该第一时间段信息可以是T1、T2、T3、T4、T5和T6。或者还可以是其他变形，不做具体限定。
该场景下，第一消息中还可以包含源PCell和/或源PSCell和/或第一小区和/或除第一小区外的其他候选目标主辅小区的小区信息，其中，所述的小区信息包括以下至少一项：PCI、频率信息、CGI、标识信息(如测量标识、配置标识)。可选地，第一消息中还可以包含小区的信号质量，如源SCG发生RLF时、终端设备与第一小区接入失败时、源MCG发生RLF，以下至少一个小区的信号质量：源PCell、源PSCell、第一小区、除第一小区外的候选目标主辅小区。第一消息中，还可以包含源SCG发生RLF的指示信息。第一消息中，还可以包含源MCG发生RLF的指示信息。可选地，第一消息中还可以包含所述终端设备接收到所述第一配置信息的指示信息。可选地，第一消息中还可以包含所述终端设备确定出所述第一小区的指示信息。可选地，第一消息中还可以包含所述终端设备接入所述第一小区失败的指示信息。可选地，第一消息中还可以包含至少一个候选目标主辅小区的信息、对应的主辅小区变更执行条件信息。
该场景下，第一网络设备可以是为终端设备提供通信的网络设备。第二网络设备可以是第一小区所属的网络设备，或者是源SN，或者是源MN。
针对上述几种实现方式，第一网络设备在接收到上述第一消息后，可以向第二网络设 备发送第二消息。如图9所示，为终端设备与网络侧通信的示例性流程图，可以包括以下步骤：
步骤901：终端设备根据第一配置信息确定出第一小区，并向第一小区发起接入。
终端设备可以根据第一配置信息确定出满足CPC变更条件的第一小区，并向第一小区发起接入。
步骤902：如果终端设备成功接入第一小区，则终端设备向管理第一小区的网络设备发送第一消息。
其中，管理第一小区的网络设备可以为前述第一网络设备。第一消息包含的内容可以参考前文。或者，终端设备可以向为所述终端设备提供通信的网络设备发送第一消息，并不限定终端设备仅可以向第一小区所属的网络设备发送第一消息。如果CPC是第一网络设备触发的，则，第一网络设备接收到第一消息后，认为发生过晚CPC，可以调整CPC的触发时间，如第一网络设备提前向终端设备发送第一配置信息的时间，可选地，第一网络设备还可以调整第一配置信息，如降低主辅小区变更执行条件。如果CPC是源SN触发的，则，第一网络设备接收到第一消息后，第一网络设备可以向源SN(即第二网络设备)发送第二消息，第二消息中可以包含第一消息中的部分或全部内容，可选的，第二消息中还可以包含过晚CPC的指示信息，即第一信息，源SN收到第二消息后，可以调整CPC的触发时间，如提前向终端设备发送第一配置信息的时间，可选地，源SN还可以调整第一配置信息，如降低主辅小区变更执行条件。
可选地，候选SN接收到第二消息后，可以向源MN或源SN发送第三消息，所述第三消息可以包括所述第二消息的部分或全部，可选地，所述第三消息可以包括第二信息，所述第二信息指示发生过晚CPC。
步骤903：如果终端设备与第一小区接入失败，且源MCG发生RLF，则终端设备发起RRC重建立流程，并执行步骤904。
步骤904：终端设备向RRC重建立小区所属的网络设备发送第一消息。
其中，RRC重建立小区所属的网络设备可以为前述第一网络设备，相应地，RRC重建立小区可以与第一小区不同，可以是前述第一网络设备管理的一个小区。或者，终端设备可以向为所述终端设备提供通信的网络设备发送第一消息，并不限定终端设备仅可以向RRC重建立小区所属的网络设备发送第一消息。第一消息包含的内容可以参考前文。
第一网络设备在接收到该第一消息后，可以将向源MN和/或源SN发送第二消息，以使源MN或源SN可以调整CPC的触发时间，如提前向终端设备发送第一配置信息的时间，可选地，源MN或源SN还可以调整第一配置信息，如降低主辅小区变更执行条件。可选地，第一网络设备还可以向候选SN发送该第二消息，候选SN则可以根据第二消息调整第一配置信息，如调整候选目标主辅小区的信息。第二消息中可以包含第一消息中的部分或全部内容，不再赘述。
步骤905：如果终端设备与第一小区接入失败，且源MCG未发生RLF，则终端设备向源MN发送第一消息。
其中，该源MN可以为前述第一网络设备。这里的第一消息可以包含如图5-图8所示的第一时间段信息，具体可以参考前文。或者，终端设备可以向为所述终端设备提供通信的网络设备发送第一消息，并不限定终端设备仅可以向源MN发送第一消息。如果CPC是第一网络设备触发的，则，第一网络设备接收到第一消息后，认为发生过晚CPC，可以 调整CPC的触发时间，如第一网络设备提前向终端设备发送第一配置信息的时间，可选地，第一网络设备还可以调整第一配置信息，如降低主辅小区变更执行条件。可选地，第一网络设备可以向候选SN(如第一小区所属的网络设备，或其他候选小区所属的网络设备)发送第二消息，候选SN可以基于第二消息，进行CPC参数调整，如调整候选目标主辅小区的信息。可选地，第一网络设备可以释放源SN，或者更换SCG/PSCell。如果CPC是源SN触发的，则，第一网络设备接收到第一消息后，第一网络设备可以向源SN(即第二网络设备)发送第二消息，第二消息中可以包含第一消息中的部分或全部内容，可选的，第二消息中还可以包含过晚CPC的指示信息，源SN收到第二消息后，可以调整CPC的触发时间，如提前向终端设备发送第一配置信息的时间，可选地，源SN还可以调整第一配置信息，如降低主辅小区变更执行条件。可选地，第一网络设备还可以向候选SN发送该第二消息，候选SN则可以根据第二消息调整第一配置信息，如调整候选目标主辅小区的信息。第二消息中可以包含第一消息中的部分或全部内容，不再赘述。
可选地，候选SN接收到第二消息后，可以向源MN或源SN发送第三消息，所述第三消息可以包括所述第二消息的部分或全部，可选地，所述第三消息可以包括第二信息，所述第二信息指示发生过晚CPC。
示例三、在源SCG或源MCG发生RLF之前，终端设备确定出第一小区。
如果在源SCG或源MCG发生RLF之前，终端设备确定出第一小区，则如图10所示，该第一时间段信息可以包括以下中的至少一项：
终端设备接收到第一配置信息开始至源SCG或源MCG发生RLF之间的时间段信息T1；终端设备接收到第一配置信息开始至终端设备确定出第一小区之间的时间段信息T3；终端设备确定出第一小区开始至源MCG或源SCG发生RLF之间的时间段信息T4；源SCG或源MCG发生RLF开始至终端设备发送第一消息之间的时间段信息T2。例如，该第一时间段信息可以是T2、T3和T4。或者，该第一时间段信息可以是T1、T2、T3和T4。或者还可以是其他变形，不做具体限定。
一种实现方式，如果源SCG或源MCG发生RLF时，即使终端设备已经确定出第一小区，但终端设备不接入或停止接入第一小区。则，第一消息中还可以包含源PCell和/或源PSCell和/或第一小区和/或除第一小区外的其他候选目标主辅小区的小区信息，其中，所述的小区信息包括以下至少一项：PCI、频率信息、CGI、标识信息(如测量标识、配置标识)。可选地，第一消息中还可以包含小区的信号质量，如源SCG发生RLF或源MCG发生RLF时，以下至少一个小区的信号质量：源PCell、源PSCell、第一小区、除第一小区外的候选目标主辅小区。第一消息中，还可以包含源SCG或源MCG发生RLF的指示信息。可选地，第一消息中还可以包含所述终端设备接收到所述第一配置信息的指示信息。可选地，第一消息中还可以包含所述终端设备确定出所述第一小区的指示信息。可选地，第一消息中还可以包含所述终端设备不接入或停止接入所述第一小区的指示信息。可选地，第一消息中还可以包含至少一个候选目标主辅小区的信息、对应的主辅小区变更执行条件信息。
如果是源MN发起的CPC，且源SCG发生RLF，那么第一网络设备可以是源MN，第二网络设备可以是源SN或候选SN(如第一小区所属的网络设备，或其他候选小区所属的网络设备)。源MN可以根据该第一消息判断出发生过晚CPC，因此该第二消息中还可以包括指示发生过晚CPC的第一信息。源MN可以调整CPC的触发时间，如提前向终端 设备发送第一配置信息的时间，可选地，源MN还可以调整第一配置信息，如降低主辅小区变更执行条件。可选地，源MN可以向候选SN发送第二消息，候选SN可以基于第二消息，进行CPC参数调整，如调整候选目标主辅小区的信息。可选地，源MN还可以释放源SN，或者更换SCG/PSCell。
如果是源SN发起的CPC，且源SCG发生RLF，那么第一网络设备可以是源MN，第二网络设备可以是源SN或者还可以是候选SN(如第一小区所属的网络设备，或其他候选小区所属的网络设备)。可选的，源MN接收到第一消息后，可以释放源SN，或者可以更换SCG/PSCell，更换后的SCG/PSCell可以属于或不属于源SN。可以向源SN、候选SN发送该第二消息。或者，源MN可以向源SN发送该第二消息，源SN再将接收到的第二消息转发给候选SN。第二消息中可以包含第一消息中的部分或全部内容，可选的，第二消息中还可以包含过晚CPC的指示信息，源SN收到第二消息后，判断出发生过晚CPC，可以调整CPC的触发时间，如提前向终端设备发送第一配置信息的时间，可选地，源SN还可以调整第一配置信息，如降低主辅小区变更执行条件。可选地，候选SN可以根据接收到的第二消息调整第一配置信息，如调整候选目标主辅小区的信息。
另一种实现方式，如果源SCG或源MCG发生RLF时，终端设备已经确定出第一小区，终端设备开始或继续向第一小区发起接入。其中，根据终端设备是否成功接入第一小区的不同，第一时间段信息也可以不同，可以包括以下两种情况：
1)终端设备成功接入第一小区。
如果终端设备成功接入第一小区，如图11所示，该第一时间段信息可以包括以下中的至少一项：
终端设备接收到第一配置信息开始至源SCG或源MCG发生RLF之间的时间段信息T1；终端设备接收到第一配置信息开始至确定出第一小区之间的时间段信息T3；确定出第一小区开始至源MCG或源SCG发生RLF之间的时间段信息T4；源MCG或源SCG发生RLF开始至终端设备接入第一小区之间的时间段信息T5；终端设备接入第一小区开始至终端设备发送第一消息之间的时间段信息T6；源SCG或源MCG发生RLF开始至终端设备发送第一消息之间的时间段信息T2。例如，该第一时间段信息可以是T1、T3、T4、T5和T6，或者该第一时间段信息还可以是T1、T2、T3、T4、T5和T6。或者，该第一时间段信息可以是T1、T2、T3、T4、T5和T6。或者还可以是其他变形，不做具体限定。
第一消息中还可以包含源PCell和/或源PSCell和/或第一小区和/或除第一小区外的其他候选目标主辅小区的小区信息，其中，所述的小区信息包括以下至少一项：PCI、频率信息、CGI、标识信息(如测量标识、配置标识)。可选地，第一消息中还可以包含小区的信号质量，如源SCG发生RLF或源MCG发生RLF时、终端设备成功接入第一小区时，以下至少一个小区的信号质量：源PCell、源PSCell、第一小区、除第一小区外的候选目标主辅小区。第一消息中，还可以包含源SCG或源MCG发生RLF的指示信息。可选地，第一消息中还可以包含所述终端设备接收到所述第一配置信息的指示信息。可选地，第一消息中还可以包含所述终端设备确定出所述第一小区的指示信息。可选地，第一消息中还可以包含所述终端设备在SCG或源MCG发生RLF后，开始或继续接入所述第一小区的指示信息。可选地，第一消息中还可以包含所述终端设备成功接入所述第一小区的指示信息。可选地，第一消息中还可以包含至少一个候选目标主辅小区的信息、对应的主辅小区变更执行条件信息。
终端设备在成功接入该第一小区后，可以向管理第一小区的网络设备发送该第一消息，相应地，管理第一小区的网络设备可以是前述第一网络设备。第一网络设备在从终端设备接收到该第一消息后，还可以向第二网络设备发送第二消息。如图12所示，为终端设备与第一网络设备通信的示例性流程图，可以包括以下步骤：
步骤1201：终端设备向第一网络设备发送第一消息。
其中，第一网络设备可以是管理第一小区的网络设备。这里的第一消息包含的内容可以参考前文。或者，终端设备可以向为所述终端设备提供通信的网络设备发送第一消息，并不限定终端设备仅可以向第一小区所属的网络设备发送第一消息。
如果CPC是第一网络设备触发的，则，第一网络设备接收到第一消息后，认为发生过晚CPC，可以调整CPC的触发时间，如第一网络设备提前向终端设备发送第一配置信息的时间，可选地，第一网络设备还可以调整第一配置信息，如降低主辅小区变更执行条件。如果CPC是源MN触发的，则，第一网络设备接收到第一消息后，第一网络设备可以向源MN发送第二消息，第二消息中可以包含第一消息中的部分或全部内容，可选的，第二消息中还可以包含过晚CPC的指示信息，源MN收到第二消息后，可以调整CPC的触发时间，如提前向终端设备发送第一配置信息的时间，可选地，源MN还可以调整第一配置信息，如降低主辅小区变更执行条件。
步骤1202：管理第一小区的网络设备向第二网络设备发送第二消息。
其中，这里的第二网络设备可以是源MN，也可以是候选SN。例如，管理第一小区的网络设备可以向源MN、候选SN发送第二消息；或者管理第一小区的网络设备可以向源MN发送第二消息，源MN在接收到该第二消息后，可以进行MN的重新配置,例如，可以更换MCG/PCell，更换后的MCG/PCell可以属于或不属于源MN。候选SN可以根据该第二消息，进行CPC参数调整，例如，调整候选目标主辅小区的信息。
可选地，候选SN接收到第二消息后，可以向源MN或源SN发送第三消息，所述第三消息可以包括所述第二消息的部分或全部，可选地，所述第三消息可以包括第二信息，所述第二信息指示发生过晚CPC。
2)终端设备与第一小区接入失败。
如果终端设备与第一小区接入失败，第一时间段信息则可以根据在源SCG发生RLF之前或者源MCG发生RLF之前确定出第一小区不同而不同。以下，分别对不同的第一时间段信息进行介绍。
(1)在源MCG发生RLF之前，终端设备确定出第一小区，且接入第一小区失败，源SCG未发生RLF。
如图13所示，该第一时间段信息可以包括以下中的至少一项：
终端设备接收到第一配置信息开始至源MCG发生RLF之间的时间段信息T1；终端设备接收到第一配置信息开始至确定出第一小区之间的时间段信息T3；确定出第一小区开始至源MCG发生RLF之间的时间段信息T4；源MCG发生RLF开始至终端设备与第一小区接入失败之间的时间段信息T5；终端设备与第一小区接入失败开始至终端设备发送第一消息之间的时间段信息T6；源MCG发生RLF开始至终端设备发送第一消息之间的时间段信息T2。例如，该第一时间段信息可以是T3、T4、T5、T6，或者该第一时间段信息可以是T1、T2、T3、T4、T5和T6。或者其他变形，不做限定。
(2)在源MCG发生RLF之前，终端设备确定出第一小区，且接入第一小区失败， 源SCG发生RLF。
在一个实施方式中，如图14所示，该第一时间段信息可以包括以下中的至少一项：
终端设备接收到第一配置信息开始至源MCG发生RLF之间的时间段信息T1；终端设备接收到第一配置信息开始至确定出第一小区之间的时间段信息T3；确定出第一小区开始至源MCG发生RLF之间的时间段信息T4；源MCG发生RLF开始至源SCG发生RLF之间的时间段信息T5；源SCG发生RLF开始至终端设备与第一小区接入失败之间的时间段信息T6；终端设备与第一小区接入失败开始至终端设备发送第一消息之间的时间段信息T7；源MCG发生RLF开始至终端设备发送第一消息之间的时间段信息T2。例如，该第一时间段信息可以是T3、T4、T5、T6和T7，或者该第一时间段信息可以是T1、T2、T3、T4、T5、T6和T7。或者其他变形，不做限定。
另一个实施方式中，如图15所示，该第一时间段信息可以包括以下中的至少一项：
终端设备接收到第一配置信息开始至源MCG发生RLF之间的时间段信息T1；终端设备接收到第一配置信息开始至确定出第一小区之间的时间段信息T3；确定出第一小区开始至源MCG发生RLF之间的时间段信息T4；源MCG发生RLF开始至终端设备与第一小区接入失败之间的时间段信息T5；终端设备与第一小区接入失败开始至源SCG发生RLF之间的时间段信息T6；源SCG发生RLF开始至终端设备发送第一消息之间的时间段信息T7；源MCG发生RLF开始至终端设备发送第一消息之间的时间段信息T2。例如，该第一时间段信息可以是T3、T4、T5、T6和T7，或者该第一时间段信息可以是T1、T2、T3、T4、T5、T6和T7。或者其他变形，不做限定。
第一网络设备在从终端设备接收到上述第一消息之后，可以向第二网络设备发送第二消息。如图16所示，为终端设备与网络侧通信的示例性流程图，可以包括以下步骤：
步骤1601：确定出第一小区之后，源MCG发生RLF，终端设备向第一小区发起接入。
步骤1602：如果终端设备成功接入该第一小区，则终端设备向第一网络设备发送该第一消息。
在这里，第一网络设备可以为该管理第一小区的网络设备，第二网络设备可以是源MN，也可以是候选SN。或者，终端设备可以向为所述终端设备提供通信的网络设备发送第一消息，并不限定终端设备仅可以向第一小区所属的网络设备发送第一消息。例如，第一网络设备可以向源MN发送第二消息。该第二消息可以是第一消息中的部分或全部。例如，该第二消息可以包含如图13-图15所示的第一时间段信息。源MN可以更改MCG/PSCell，更改后的MCG/PSCell可以属于或不属于源MN，可选地，若CPC是源MN触发的，源MN可以调整CPC的触发时间，如提前向终端设备发送第一配置信息的时间，可选地，源MN还可以调整第一配置信息，如降低主辅小区变更执行条件。第一网络设备还可以向源SN、候选SN发送该第二消息，或者源MN接收到第二消息后可以向源SN、候选SN发送该第二消息。源SN收到第二消息后，若CPC是源SN触发的，源SN可以调整CPC的触发时间，如提前向终端设备发送第一配置信息的时间，可选地，源SN还可以调整第一配置信息，如降低主辅小区变更执行条件，另一方面，候选SN在接收到该第二消息后，可以进行CPC参数调整，例如可以调整候选目标主辅小区的信息。
步骤1603：如果终端设备与该第一小区接入失败，且源SCG未发生RLF，则向第一网络设备发送该第一消息。
此时，第一网络设备可以为源SN，第二网络设备可以是源MN，也可以是候选SN。 或者，终端设备可以向为所述终端设备提供通信的网络设备发送第一消息，并不限定终端设备仅可以向源SN发送第一消息。若CPC是源SN触发的，源SN可以调整CPC的触发时间，如提前向终端设备发送第一配置信息的时间，可选地，源SN还可以调整第一配置信息，如降低主辅小区变更执行条件。可选地，源SN可以向源MN发送第二消息。这里的第二消息可以包含第一消息中的部分或全部，例如，该第二消息可以包含如图13-图15所示的第一时间段信息，具体参考前文。源MN可以更改MCG/PSCell，更改后的MCG/PSCell可以属于或不属于源MN。可选地，若CPC是源MN触发的，源MN可以调整CPC的触发时间，如提前向终端设备发送第一配置信息的时间，可选地，源MN还可以调整第一配置信息，如降低主辅小区变更执行条件。可选地，源SN还可以向候选SN发送第二消息，或者源MN可以向候选SN发送该第二消息。候选SN在接收到该第二消息后，可以进行CPC参数调整，例如可以调整候选目标主辅小区的信息。可选地，候选SN接收到第二消息后，可以向源MN或源SN发送第三消息，所述第三消息可以包括所述第二消息的部分或全部，可选地，所述第三消息可以包括第二信息，所述第二信息指示发生过晚CPC。
步骤1604：如果终端设备与该第一小区接入失败，且源SCG发生RLF，则终端设备重新建立RRC连接。
步骤1605：终端设备向第一网络设备发送第一消息。
其中，前述第一网络设备可以为该管理小区A的网络设备，第二网络设备可以是源MN，也可以是候选SN。这里的小区A是终端设备重新建立RRC连接而接入的小区，可以与第一小区不同。或者，终端设备可以向为所述终端设备提供通信的网络设备发送第一消息，并不限定终端设备仅可以向小区A所属的网络设备发送第一消息。管理小区A的网络设备或第一网络设备可以向源MN、源SN或者候选SN发送第二消息。这里的第二消息可以包含第一消息中的部分或全部。例如，该第二消息可以包含如图13-图15所示的第一时间段信息。或者，管理小区A的网络设备可以向源MN发送第二消息，源MN可以向源SN或者候选SN发送第二消息。可选地，源MN收到第二消息后，可以更改MCG/PSCell，更改后的MCG/PSCell可以属于或不属于源MN，可选地，若CPC是源MN触发的，源MN可以调整CPC的触发时间，如提前向终端设备发送第一配置信息的时间，可选地，源MN还可以调整第一配置信息，如降低主辅小区变更执行条件。可选的，源SN收到第二消息后，若CPC是源SN触发的，源SN可以调整CPC的触发时间，如提前向终端设备发送第一配置信息的时间，可选地，源SN还可以调整第一配置信息，如降低主辅小区变更执行条件。可选地，候选SN在接收到第二消息后，可以进行CPC参数调整，例如可以调整候选目标主辅小区的信息。
可选地，候选SN接收到第二消息后，可以向源MN或源SN发送第三消息，所述第三消息可以包括所述第二消息的部分或全部，可选地，所述第三消息可以包括第二信息，所述第二信息指示发生过晚CPC。
(3)在源SCG发生RLF之前，终端设备确定出第一小区，且接入第一小区失败，源MCG未发生RLF。
如果终端设备与第一小区接入失败，且源MCG未发生RLF，则如图17所示，该第一时间段信息可以包括以下中的至少一项：
终端设备接收到第一配置信息开始至源SCG发生RLF之间的时间段信息T1；终端设 备接收到第一配置信息开始至确定出第一小区之间的时间段信息T3；确定出第一小区开始至源SCG发生RLF之间的时间段信息T4；源SCG发生RLF开始至终端设备与第一小区接入失败之间的时间段信息T5；终端设备与第一小区接入失败开始至终端设备发送第一消息之间的时间段信息T6；源SCG发生RLF开始至终端设备发送第一消息之间的时间段信息T2。例如，该第一时间段信息可以是T3、T4、T5和T6，或者该第一时间段信息还可以是T1、T2、T3、T4、T5和T6。或者其他变形，不做限定。
(4)在源SCG发生RLF之前，终端设备确定出第一小区，且接入第一小区失败，源MCG发生RLF。
在一个实施方式中，如果终端设备与第一小区接入失败，且源MCG发生RLF，则如图18所示，该第一时间段信息可以包括以下中的至少一项：
终端设备接收到第一配置信息开始至源SCG发生RLF之间的时间段信息T1；终端设备接收到第一配置信息开始至确定出第一小区之间的时间段信息T3；确定出第一小区开始至源SCG发生RLF之间的时间段信息T4；源SCG发生RLF开始至源MCG发生RLF之间的时间段信息T5；源MCG发生RLF开始至终端设备与第一小区接入失败之间的时间段信息T6；终端设备与第一小区接入失败开始至终端设备发送第一消息之间的时间段信息T7；源SCG发生RLF开始至终端设备发送第一消息之间的时间段信息T2。例如，该第一时间段信息可以是T3、T4、T5、T6和T7，或者该第一时间段信息可以是T1、T2、T3、T4、和T5、T6和T7。或者其他变形，不做限定。
另一个实施例中，如果终端设备与第一小区接入失败，且源MCG发生RLF，则如图19所示，该第一时间段信息可以包括以下中的至少一项。
终端设备接收到第一配置信息开始至源SCG发生RLF之间的时间段信息T1；终端设备接收到第一配置信息开始至确定出第一小区之间的时间段信息T3；确定出第一小区开始至源SCG发生RLF之间的时间段信息T4；源SCG发生RLF开始至终端设备与第一小区接入失败之间的时间段信息T5；所述终端设备与所述第一小区接入失败开始至所述源MCG发生RLF之间的时间段信息T6；所述源MCG发生RLF开始至所述终端设备发送所述第一消息之间的时间段信息T7；源SCG发生RLF开始至终端设备发送第一消息之间的时间段信息T2。例如，该第一时间段信息可以是T3、T4、T5、T6和T7，或者该第一时间段信息可以是T1、T2、T3、T4、T5、T6和T7。或者其他变形，不做限定。
第一网络设备在从终端设备接收到上述第一消息之后，可以向第二网络设备发送第二消息。如图20所示，为终端设备与网络侧通信的示例性流程图，可以包括以下步骤：
步骤2001：确定出第一小区之后，源SCG发生RLF，终端设备向第一小区发起接入。
步骤2002：如果终端设备成功接入第一小区，终端设备向第一网络设备发送第一消息。
在这里，第一网络设备可以是管理第一小区的网络设备，第二网络设备可以是源MN，也可以是候选SN。或者，终端设备可以向为所述终端设备提供通信的网络设备发送第一消息，并不限定终端设备仅可以向第一小区所属的网络设备发送第一消息。管理第一小区的网络设备可以向源MN发送第二消息。该第二消息可以包含第一消息中的部分或全部。例如，该第二消息可以包含如图17-图19所示的第一时间段信息。可选地，源MN收到第二消息后，可以更改MCG/PSCell，更改后的MCG/PSCell可以属于或不属于源MN，可选地，若CPC是源MN触发的，源MN可以调整CPC的触发时间，如提前向终端设备发送 第一配置信息的时间，可选地，源MN还可以调整第一配置信息，如降低主辅小区变更执行条件。管理第一小区的网络设备还可以向源SN或者候选SN发送该第二消息，或者源MN接收到第二消息后，可以向源SN或候选SN发送该第二消息。若CPC是源SN触发的，源SN在接收到第二消息后，可以调整CPC的触发时间，如提前向终端设备发送第一配置信息的时间，可选地，源SN还可以调整第一配置信息，如降低主辅小区变更执行条件。候选SN在接收到该第二消息后，可以进行CPC参数调整，例如可以调整候选目标主辅小区的信息。
步骤2003：如果终端设备与第一小区接入失败，且源MCG未发生RLF，则向第一网络设备发送该第一消息。
此时，第一网络设备可以为源MN，第二网络设备可以是源SN或者候选SN。或者，终端设备可以向为所述终端设备提供通信的网络设备发送第一消息，并不限定终端设备仅可以向源MN发送第一消息。源MN可以向源SN或候选SN发送第二消息。该第二消息可以包含第一消息中的部分或全部。例如，该第二消息可以包含如图17-图19所示的第一时间段信息。可选地，源MN收到第一消息后，可以更改MCG/PSCell，更改后的MCG/PSCell可以属于或不属于源MN，可选地，若CPC是源MN触发的，源MN可以调整CPC的触发时间，如提前向终端设备发送第一配置信息的时间，可选地，源MN还可以调整第一配置信息，如降低主辅小区变更执行条件。源MN还可以向源SN或候选SN发送该第二消息，或者源SN接收到第二消息后可以向候选SN发送第二消息。可选的，源SN收到第二消息后，若CPC是源SN触发的，源SN可以调整CPC的触发时间，如提前向终端设备发送第一配置信息的时间，可选地，源SN还可以调整第一配置信息，如降低主辅小区变更执行条件。可选地，候选SN在接收到第二消息后，可以进行CPC参数调整，例如可以调整候选目标主辅小区的信息。
可选地，候选SN接收到第二消息后，可以向源MN或源SN发送第三消息，所述第三消息可以包括所述第二消息的部分或全部，可选地，所述第三消息可以包括第二信息，所述第二信息指示发生过晚CPC。
步骤2004：如果终端设备与该第一小区接入失败，且源MCG发生RLF，则终端设备重新建立RRC连接。
步骤2005：终端设备向第一网络设备发送第一消息。
其中，第一网络设备可以是该管理小区A的网络设备，第二网络设备可以是源MN或者候选SN。这里的小区A可以是终端设备重新建立RRC连接而接入的小区，可以与第一小区不同。或者，终端设备可以向为所述终端设备提供通信的网络设备发送第一消息，并不限定终端设备仅可以向小区A所属的网络设备发送第一消息。管理小区A的网络设备可以向源MN、源SN或候选SN发送第二消息。这里的第二消息可以包含第一消息中的部分或全部。例如，该第二消息可以包含如图17-图19所示的第一时间段信息。或者，管理小区A的网络设备可以向源MN发送第二消息，源MN接收到第二消息后，可以向源SN或候选SN发送第二消息。可选地，源MN收到第二消息后，可以更改MCG/PSCell，更改后的MCG/PSCell可以属于或不属于源MN，可选地，若CPC是源MN触发的，源MN可以调整CPC的触发时间，如提前向终端设备发送第一配置信息的时间，可选地，源MN还可以调整第一配置信息，如降低主辅小区变更执行条件。可选的，源SN收到第二消息后，若CPC是源SN触发的，源SN可以调整CPC的触发时间，如提前向终端设备发送第一配 置信息的时间，可选地，源SN还可以调整第一配置信息，如降低主辅小区变更执行条件。可选地，候选SN在接收到第二消息后，可以进行CPC参数调整，例如可以调整候选目标主辅小区的信息。
可选地，候选SN接收到第二消息后，可以向源MN或源SN发送第三消息，所述第三消息可以包括所述第二消息的部分或全部，可选地，所述第三消息可以包括第二信息，所述第二信息指示发生过晚CPC。
示例四、在终端设备成功接入第一小区之后，源MCG或源SCG发生RLF。
如果在终端设备成功接入第一小区之后，源MCG或源SCG发生RLF，则如图21所示，该第一时间段信息可以包括以下中的至少一项：
终端设备接收到第一配置信息开始至终端设备确定出第一小区之间的时间段信息T3；终端设备确定出第一小区开始至终端设备成功接入第一小区之间的时间段信息T4；终端设备成功接入第一小区开始至源MCG或源SCG发生RLF之间的时间段信息T5；终端设备接收到第一配置信息开始至源MCG或源SCG发生RLF开始之间的时间段信息T1；源MCG或源SCG发生RLF开始至终端设备发送第一消息之间的时间段信息T2。例如，该第一时间段信息可以包括T3、T4和T5，或者该第一时间段信息可以包括T1、T2、T3、T4和T5。或者其他变形，不做限定。
第一网络设备在接收到该第一消息之后，还可以向第二网络设备发送第二消息。如图22所示，为终端设备与网络侧信的示例性流程图，可以包括以下步骤：
步骤2201：终端设备向第一网络设备发送第一消息。
这里的第一网络设备可以是管理第一小区的网络设备。或者，终端设备可以向为所述终端设备提供通信的网络设备发送第一消息，并不限定终端设备仅可以向第一小区所属的网络设备发送第一消息。第一消息可以包括如图21所示的第一时间段信息。
步骤2202：第一的网络设备可以向第二网络设备发送第二消息。
这里的第二网络设备可以是源MN、源SN和候选SN中的至少一个。
一种实现方式中，如果在接入第一小区之后，源MCG发生RLF，管理第一小区的网络设备可以向源MN发送第二消息，如果在接入第一小区之后，源SCG发生RLF，管理第一小区的网络设备可以向源SN发送第二消息。可选的，管理第一小区的网络设备还可以向源SN、候选SN发送第二消息，或者可以由源MN向源SN发送该第二消息，或者可以由源MN或源SN向候选SN发送该第二消息。可选地，源MN收到第二消息后，可以更改MCG/PSCell，更改后的MCG/PSCell可以属于或不属于源MN，可选地，若CPC是源MN触发的，源MN可以调整CPC的触发时间，如提前向终端设备发送第一配置信息的时间，可选地，源MN还可以调整第一配置信息，如降低主辅小区变更执行条件。可选的，源SN收到第二消息后，若CPC是源SN触发的，源SN可以调整CPC的触发时间，如提前向终端设备发送第一配置信息的时间，可选地，源SN还可以调整第一配置信息，如降低主辅小区变更执行条件。可选地，候选SN在接收到第二消息后，可以进行CPC参数调整，例如可以调整候选目标主辅小区的信息。
或者，可选地，候选SN接收到第二消息后，可以向源MN或源SN发送第三消息，所述第三消息可以包括所述第二消息的部分或全部，可选地，所述第三消息可以包括第二信息，所述第二信息指示发生过晚CPC。
这里的第二消息可以包含第一消息中的部分或全部。例如，第二消息可以包含如图21 所示的第一时间段信息。
如示例一至示例四所述，终端设备可以向第一网络设备发送第一消息。其中，该第一消息可以包含第一时间段信息。在一个实施方式中，终端设备还可以向第一网络设备发送第一指示信息。该第一指示信息可以指示源MCG发生RLF或者源SCG发生RLF。示例性的，终端设备可以将第一消息和第一指示信息分开发送，或者还可以将第一指示信息携带在第一消息中进行发送。
如果源MCG发生RLF，则第一指示信息用于指示源MCG发生RLF，如果源SCG发生RLF，则第一指示信息用于指示源SCG发生RLF。
在一示例中，该第一消息还可以包括源MCG的小区信息。其中源MCG可以包括源PCell，可选还包括属于源MN的源SCell。源MCG的小区信息可以包括源MCG的标识信息。例如，源MCG的PCI、源MCG的频率和源MCG的CGI中的至少一项。或者，源MCG的小区信息还可以包括小区的信号质量。例如，可以包括终端设备在源SCG发生RLF时的源MCG的小区信号质量。还可以包括终端设备在源MCG发生RLF时的源MCG的小区信号质量。还可以包括终端设备在发送第一消息时源MCG的小区信号质量。还可以包括终端设备在确定出第一小区时的源MCG的小区信号质量。或者，还可以包括终端设备在与第一小区接入成功时的源MCG的小区信号质量。或者，还可以包括终端设备在与第一小区接入失败时的源MCG的小区信号质量。
另一示例中，该第一消息还可以包括源SCG的小区信息。其中源SCG可以包括源PSCell，可选还包括属于源SN的源SCell。源SCG的小区信息可以包括源SCG的标识信息。例如，源SCG的PCI、源SCG的频率和源SCG的CGI中的至少一项。或者，源SCG的小区信息还可以包括小区信号质量。例如，可以包括终端设备在源MCG发生RLF时的源SCG的小区信号质量。还可以包括终端设备在源SCG发生RLF时的源SCG的小区信号质量。或者，还可以包括终端设备在发送第一消息时源SCG的小区信号质量。还可以包括终端设备在确定出第一小区时的源SCG的小区信号质量。或者，还可以包括终端设备在与第一小区接入成功时的源SCG的小区信号质量。或者，还可以包括终端设备在与第一小区接入失败时的源SCG的小区信号质量。
再一示例中，该第一消息还可以包括至少一个候选目标主辅小区的小区信息。这里的至少一个候选目标小区的小区信息可以包括第一小区的小区信息，或者还可以包括除第一小区外的其他候选目标主辅小区的小区信息。例如，可以包含至少一个候选目标主辅小区的标识信息。例如，可以是PCI、频率和CGI中的至少一项。或者还可以包括至少一个候选目标主辅小区的小区信号质量。例如，可以包括终端设备在源MCG发生RLF或源SCG发生RLF时的至少一个候选目标主辅小区的小区信号质量。或者，还可以包括终端设备在发送第一消息时至少一个候选目标主辅小区的小区信号质量。还可以包括终端设备在确定出第一小区时的至少一个候选目标主辅小区的小区信号质量。或者，还可以包括终端设备在与第一小区接入成功时的至少一个候选目标主辅小区的小区信号质量。或者，还可以包括终端设备在与第一小区接入失败时的至少一个候选目标主辅小区的小区信号质量。
应理解，第二消息可以包含第一消息中的部分或全部。因此，第二消息也可以包含上述第一信息、源MCG的小区信息、源SCG的小区信息和至少一个候选目标主辅小区的小区信息中的至少一项。例如，第二消息中可以包含第一信息、源MCG的小区信息。或者，第二消息中可以包含第一信息、源SCG的小区信息。或者，该第二消息中可以包含第一信 息、至少一个候选目标主辅小区的小区信息。或者，该第二消息中可以包含第一信息、源MCG的小区信息、源SCG的小区信息和至少一个候选目标主辅小区的小区信息。或者其他，本发明对此不做限定。
基于上述方案，通过第二消息中包含的源MCG的小区信息、源SCG的小区信息和至少一个候选目标主辅小区的小区信息，可以使得网络设备根据上述信息确定主辅小区变更失败的原因，网络设备之间也可以交互合理、有效的信息，从而可以对主辅小区变更的配置信息进行相应的优化，提高主辅小区变更的成功率。
前文介绍了本申请实施例的通信的方法，下文中将介绍本申请实施例中的通信的设备。方法、设备是基于同一技术构思的，由于方法、设备解决问题的原理相似，因此设备与方法的实施可以相互参见，重复之处不再赘述。
基于与上述通信方法的同一技术构思，如图23所示，提供了一种终端设备2300。终端设备2300能够上述方法中由终端设备执行的各个步骤，为了避免重复，此处不再详述。终端设备2300包括：通信单元2310、存储单元2330，可选的，还包括处理单元2320；处理单元2320可以分别与存储单元2330和通信单元2310相连，所述存储单元2330也可以与通信单元2310相连。其中，处理单元2320可以与存储单元2330集成。
所述存储单元2330，用于存储计算机程序；
示例的，所述通信单元2310用于接收第一配置信息；所述第一配置信息包含至少一个候选目标主辅小区的信息和对应的主辅小区变更执行条件信息；所述第一配置信息用于确定第一小区；所述第一小区是至少一个候选目标主辅小区中满足主辅小区变更执行条件的小区。所述终端设备的源主小区组MCG或源辅小区组SCG发生无线链路失败RLF，所述通信单元2310发送第一消息；所述第一消息中包含第一时间段信息。其中，第一时间段信息的相关描述可以参见如图2所示的方法实施例的相关描述。
本申请实施例还提供一种通信装置，该通信装置可以是终端设备也可以是电路。该通信装置可以用于执行上述方法实施例中由终端设备所执行的动作。
上述方法中由终端设备执行的各个步骤还可以由用于终端设备的芯片实现，其中通信单元可以为芯片的输入/输出电路或者接口，处理单元可以为逻辑电路，逻辑电路可以根据上述方法方面所描述的步骤对待处理的数据进行处理，获取处理后的数据。待处理的数据可以是输入电路/接口接收的数据，比如第一配置信息。处理后的数据可以是根据待处理的数据得到的数据，比如第一消息。输出电路/接口用于输出处理后的数据。
图24示出了一种简化的终端设备的结构示意图。便于理解和图示方便，图24中，终端设备以手机作为例子。如图24所示，终端设备包括处理器、存储器、射频电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及对终端设备进行控制，执行软件程序，处理软件程序的数据等。存储器主要用于存储软件程序和数据。射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。需要说明的是，有些种类的终端设备可以不具有输入输出装置。
当需要发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。 当有数据发送到终端设备时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。为便于说明，图24中仅示出了一个存储器和处理器。在实际的终端设备产品中，可以存在一个或多个处理器和一个或多个存储器。存储器也可以称为存储介质或者存储设备等。存储器可以是独立于处理器设置，也可以是与处理器集成在一起，本申请实施例对此不做限制。
在本申请实施例中，可以将具有收发功能的天线和射频电路视为终端设备的通信单元，将具有处理功能的处理器视为终端设备的处理单元。如图24所示，终端设备包括通信单元2410和处理单元2420。通信单元也可以称为收发器、收发机、收发装置等。处理单元也可以称为处理器，处理单板，处理模块、处理装置等。可选的，可以将通信单元2410中用于实现接收功能的器件视为接收单元，将通信单元2410中用于实现发送功能的器件视为发送单元，即通信单元2410包括接收单元和发送单元。通信单元有时也可以称为收发机、收发器、或收发电路等。接收单元有时也可以称为接收机、接收器、或接收电路等。发送单元有时也可以称为发射机、发射器或者发射电路等。
应理解，通信单元2410用于执行上述方法实施例中终端设备侧的发送操作和接收操作，处理单元2420用于执行上述方法实施例中终端设备上除了收发操作之外的其他操作。
例如，在一种实现方式中，通信单元2410用于执行图2中的步骤201和步骤202中终端设备侧的接收和/或发送操作，和/或通信单元2410还用于执行本申请实施例中终端设备侧的其他收发步骤。处理单元2420，用于执行本申请实施例中终端设备侧的其他处理步骤。
基于与上述通信方法的同一技术构思，如图25所示，提供了一种网络设备2500。网络设备2500能够上述方法中由第一网络设备或第二网络设备执行的各个步骤，为了避免重复，此处不再详述。网络设备2500包括：通信单元2510、存储单元2530，可选的，还包括处理单元2520；处理单元2520可以分别与存储单元2530和通信单元2510相连，所述存储单元2530也可以与通信单元2510相连。其中，处理单元2520可以与存储单元2530集成。
所述存储单元2530，用于存储计算机程序；
示例的，所述通信单元2510用于接收终端设备发送的第一消息。所述第一消息的描述可以参见如图2所示的方法实施例中的相关描述，此处不再赘述。所述通信单元2510还用于向第二网络设备发送第二消息。其中，第二消息的相关描述可以参见如图2所示的方法实施例的相关描述。
示例性的，所述通信单元2510还可以接收第一网络设备发送的第二消息，以及向第三网络设备发送第三消息。其中，第三消息的描述可以如图2所示的方法实施例中的相关描述。
上述方法中由第一网络设备或第二网络设备执行的各个步骤还可以由用于网络设备的芯片实现，其中通信单元可以为芯片的输入/输出电路或者接口，处理单元可以为逻辑电路，逻辑电路可以根据上述方法方面所描述的步骤对待处理的数据进行处理，获取处理后的数据。待处理的数据可以是输入电路/接口接收的数据，比如第一消息。处理后的数据可以是根据待处理的数据得到的数据，比如第二消息。输出电路/接口用于输出处理后的数据。
如图26所示为本申请实施例提供的通信装置2600，用于实现上述方法中终端设备、 网络设备的功能。该通信装置可以是终端设备、网络设备，也可以是用于终端设备或者网络设备的芯片，或者是能够和终端设备、网络设备匹配使用的装置。
通信装置2600包括至少一个处理器2620，用于实现本申请实施例提供的方法中终端设备、网络设备的功能。通信装置2600还可以包括通信接口2610。在本申请实施例中，通信接口可以是收发器、电路、总线、模块或其它类型的通信接口，用于通过传输介质和其它设备进行通信。例如，通信接口2610用于通信装置2600中的装置可以和其它设备进行通信。该通信装置2600是终端设备时，所述处理器2620可以完成如图23所示的处理单元2320的功能，所述通信接口2610可以完成如图23所示的通信单元2310的功能。该通信装置2600是网络设备时，所述处理器2620可以完成如图25所示的处理单元2520的功能，所述通信接口2610可以完成如图25所示的通信单元2510的功能。
通信装置2600还可以包括至少一个存储器2630，用于存储程序指令和/或数据。存储器2630和处理器2620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2620可能和存储器2630协同操作。处理器2620可能执行存储器2630中存储的程序指令。所述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通信接口2610、处理器2620以及存储器2630之间的具体连接介质。本申请实施例在图26中以存储器2630、处理器2620以及通信接口2610之间通过总线2640连接，总线在图26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。所述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26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。
作为本实施例的另一种形式，提供一种计算机可读存储介质，其上存储有指令，该指令被执行时执行上述方法实施例中终端设备侧或者第一网络设备侧或者第二网络设备侧的方法。
作为本实施例的另一种形式，提供一种包含指令的计算机程序产品，该指令被执行时执行上述方法实施例中终端设备侧或者第一网络设备侧或者第二网络设备侧的方法。
作为本实施例的另一种形式，提供一种通信系统，该系统可以包括上述至少一个终端设备和上述至少一个网络设备。
应理解，本发明实施例中提及的处理器可以是中央处理单元(Central Processing Unit，CPU)，还可以是其他通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现成可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
还应理解，本发明实施例中提及的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(Read-Only Memory，ROM)、可编程只读存储器(Programmable ROM，PROM)、可擦除可编程只读存储器(Erasable PROM，EPROM)、电可擦除可编程只读存储器(Electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(Static RAM，SRAM)、动态随机存取存储器(Dynamic RAM，DRAM)、同步动态随机存取存储器(Synchronous DRAM，SDRAM)、双倍数据速率同步动态随机 存取存储器(Double Data Rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM，DR RAM)。
需要说明的是，当处理器为通用处理器、DSP、ASIC、FPGA或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件时，存储器(存储模块)集成在处理器中。
应注意，本文描述的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本发明实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何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所述以权利要求的保护范围为准。

Claims (36)

  1. 一种通信方法，其特征在于，包括：
    终端设备接收第一配置信息；所述第一配置信息包含至少一个候选目标主辅小区的信息和对应的主辅小区变更执行条件信息；所述第一配置信息用于确定第一小区；所述第一小区是至少一个候选目标主辅小区中满足主辅小区变更执行条件的小区；
    所述终端设备的源主小区组MCG或源辅小区组SCG发生无线链路失败RLF，终端设备发送第一消息；所述第一消息中包含第一时间段信息；
    所述第一时间段信息包括以下中的至少一项：
    所述终端设备接收到所述第一配置信息开始至所述源MCG或所述源SCG发生RLF之间的时间段信息；所述源MCG或所述源SCG发生RLF开始至所述终端设备发送所述第一消息之间的时间段信息。
  2. 根据权利要求1所述的方法，其特征在于，所述终端设备发送第一消息，包括：
    在所述源MCG或源SCG发生RLF且不存在所述第一小区时，所述终端设备发送所述第一消息。
  3. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    在所述源SCG发生RLF之后，所述终端设备根据所述第一配置信息确定出所述第一小区并向所述第一小区发起接入；
    若所述终端设备成功接入所述第一小区，所述第一时间段信息还包括以下中的至少一项：
    所述源SCG发生RLF开始至所述终端设备确定出所述第一小区之间的时间段信息；所述终端设备确定出所述第一小区开始至所述终端设备成功接入所述第一小区之间的时间段信息；所述终端设备成功接入所述第一小区开始至所述终端设备发送所述第一消息之间的时间段信息；
    若所述终端设备接入所述第一小区失败，且所述源MCG未发生RLF，第一时间段信息还包括以下中的至少一项：
    所述源SCG发生RLF开始至所述终端设备确定出所述第一小区之间的时间段信息；所述终端设备确定出所述第一小区开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述终端设备发送所述第一消息之间的时间段信息；
    若所述终端设备接入所述第一小区失败，且所述源MCG发生RLF，第一时间段信息包括以下中的至少一项：所述源SCG发生RLF开始至所述终端设备确定出所述第一小区之间的时间段信息；所述终端设备确定出所述第一小区开始至所述源MCG发生RLF之间的时间段信息；所述源MCG发生RLF开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述终端设备发送所述第一消息之间的时间段信息；
    或者，若所述终端设备接入所述第一小区失败，且所述源MCG发生RLF，第一时间段信息还包括以下中的至少一项：
    所述源SCG发生RLF开始至所述终端设备确定出所述第一小区之间的时间段信息；所述终端设备确定出所述第一小区开始至所述终端设备与所述第一小区接入失败之间的 时间段信息；所述终端设备与所述第一小区接入失败开始至所述源MCG发生RLF之间的时间段信息；所述源MCG发生RLF开始至所述终端设备发送所述第一消息之间的时间段信息。
  4. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    在所述源MCG或源SCG发生RLF之前，所述终端设备确定出所述第一小区，所述第一时间段信息还包括以下中的至少一项：
    所述终端设备接收到所述第一配置信息开始至所述终端设备确定出所述第一小区之间的时间段信息；所述终端设备确定出所述第一小区开始至所述源MCG或所述源SCG发生RLF之间的时间段信息。
  5. 根据权利要求4所述的方法，其特征在于，所述方法包括：
    所述终端设备成功接入所述第一小区，所述第一时间段信息还包括以下中的至少一项：
    所述源MCG或所述源SCG发生RLF开始至所述终端设备接入所述第一小区之间的时间段信息；所述终端设备接入所述第一小区开始至所述终端设备发送所述第一消息之间的时间端信息。
  6. 根据权利要求4所述的方法，其特征在于，在所述源MCG发生RLF之前，所述终端设备确定出所述第一小区，所述方法还包括：
    所述终端设备接入所述第一小区失败，且所述源SCG未发生RLF，所述第一时间段信息还包括以下中的至少一项：
    所述源MCG发生RLF开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述终端设备发送所述第一消息之间的时间段信息；或者
    所述终端设备接入所述第一小区失败，且所述源SCG发生RLF，所述第一时间段信息包括以下中的至少一项：所述源MCG发生RLF开始至所述源SCG发生RLF之间的时间段信息；所述源SCG发生RLF开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述终端设备发送所述第一消息之间的时间段信息；
    或者，所述终端设备接入所述第一小区失败，且所述源SCG发生RLF，所述第一时间段信息还包括以下中的至少一项：所述源MCG发生RLF开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述源SCG发生RLF之间的时间段信息；所述源SCG发生RLF开始至所述终端设备发送所述第一消息之间的时间段信息。
  7. 根据权利要求4所述的方法，其特征在于，在所述源SCG发生RLF之前，所述终端设备确定出所述第一小区，所述方法还包括：
    所述终端设备与所述第一小区接入失败，且所述源MCG未发生RLF，所述第一时间段信息还包括以下中的至少一项：所述源SCG发生RLF开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述终端设备发送所述第一消息之间的时间段信息；或者
    所述终端设备与所述第一小区接入失败，且所述源MCG发生RLF，所述第一时间段信息还包括以下中的至少一项：所述源SCG发生RLF开始至所述源MCG发生RLF之间的时间段信息；所述源MCG发生RLF开始至所述终端设备与所述第一小区接入失败之 间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述终端设备发送所述第一消息之间的时间段信息；
    或者，所述终端设备与所述第一小区接入失败，且所述源MCG发生RLF，所述第一时间段信息还包括以下中的至少一项：所述源SCG发生RLF开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述源MCG发生RLF之间的时间段信息；所述源MCG发生RLF开始至所述终端设备发送所述第一消息之间的时间段信息。
  8. 根据权利要求1所述的方法，其特征在于，在所述终端设备成功接入所述第一小区之后，所述源MCG或源SCG发生RLF，所述第一时间段信息还包括以下中的至少一项：
    所述终端设备接收到所述第一配置信息开始至所述终端设备确定出所述第一小区之间的时间段信息；所述终端设备确定出所述第一小区开始至所述终端设备成功接入所述第一小区之间的时间段信息；所述终端设备成功接入所述第一小区开始至所述源MCG或源SCG发生RLF之间的时间段信息。
  9. 根据权利要求1-8任一所述的方法，其特征在于，所述方法还包括：
    所述终端设备发送第一指示信息；所述第一指示信息指示所述源MCG发生RLF或者所述源SCG发生RLF。
  10. 根据权利要求1-9任一所述的方法，其特征在于，所述第一消息还包括以下中的至少一项：
    所述源主小区的小区信息、所述源主辅小区的小区信息、所述至少一个候选目标主辅小区的小区信息、所述终端设备接收到所述第一配置信息的指示信息、所述终端设备确定出所述第一小区或未确定出所述第一小区的指示信息、所述终端设备成功接入所述第一小区或接入所述第一小区失败的指示信息。
  11. 根据权利要求1-10任一所述的方法，其特征在于，所述方法还包括：
    所述终端设备发送第二指示信息；
    所述终端设备接收响应于所述第二指示信息的请求消息；所述请求消息请求所述第一消息；
    所述终端设备发送所述第一消息，包括：
    所述终端设备根据所述请求消息，发送所述第一消息。
  12. 一种通信方法，其特征在于，所述方法包括：
    第一网络设备接收终端设备发送的第一消息；所述第一消息中包含所述终端设备的第一时间段信息；所述第一时间段信息包括以下中的至少一项：所述终端设备接收到所述第一配置信息开始至所述源MCG或所述源SCG发生无线链路失败之间的时间段信息；所述源MCG或所述源SCG发生RLF开始至所述终端设备发送所述第一消息之间的时间段信息；
    所述第一网络设备向第二网络设备发送第二消息；所述第二消息包括所述第一消息的部分或全部；
    其中，所述第一网络设备是管理源主小区的网络设备，且所述第二网络设备是管理源主辅小区的网络设备；或者，所述第一网络设备是管理源主小区的网络设备，且所述第二网络设备是管理至少一个候选目标主辅小区的网络设备；或者，所述第一网络设备是管理 源主辅小区的网络设备，且所述第二网络设备是管理源主小区的网络设备；或者，所述第一网络设备是管理源主辅小区的网络设备，且所述第二网络设备是管理至少一个候选目标主辅小区的网络设备；或者，所述第一网络设备是为所述终端设备提供通信的网络设备，所述第二网络设备是管理源主小区的网络设备；或者，所述第一网络设备是为所述终端设备提供通信的网络设备，所述第二网络设备是管理源主辅小区的网络设备；或者，所述第一网络设备是为所述终端设备提供通信的网络设备，所述第二网络设备是管理至少一个候选目标主辅小区的网络设备；所述至少一个候选目标主辅小区是管理所述终端设备的源主小区的网络设备为所述终端设备配置的。
  13. 根据权利要求12所述的方法，其特征在于，所述第二消息还包括第一信息，所述第一信息指示发生过晚条件主辅小区变更CPC。
  14. 根据权利要求12或13所述的方法，其特征在于，还包括：
    所述第一网络设备根据所述第一时间段信息，确定所述源SCG或源MCG发生RLF；
    所述第一网络设备释放所述源SCG和/或所述源MCG、或者所述第一网络设备更改SCG和/或MCG、或者所述第一网络设备保持所述源SCG和/或所述源MCG不变化；其中，所述第一网络设备是所述管理源主小区的网络设备。
  15. 根据权利要求12-14任一所述的方法，其特征在于，所述第一网络设备接收终端设备发送的第一消息，包括：
    所述第一网络设备接收所述终端设备发送的第二指示信息；
    所述第一网络设备响应于所述第二指示信息，向所述终端设备发送请求消息；所述请求消息请求所述第一消息；
    所述第一网络设备接收所述终端设备发送的所述第一消息。
  16. 一种通信方法，其特征在于，包括：
    第二网络设备接收第一网络设备发送的第二消息；所述第二消息中包含所述终端设备的第一时间段信息；所述第一时间段信息包括以下中的至少一项：所述终端设备接收到所述第一配置信息开始至所述源MCG或所述源SCG发生无线链路失败之间的时间段信息；所述源MCG或所述源SCG发生RLF开始至所述终端设备发送所述第一消息之间的时间段信息；
    所述第二网络设备向第三网络设备发送第三消息；所述第三消息包含所述第二消息中的部分或全部；
    其中，所述第一网络设备是为所述终端设备提供通信的网络设备；所述第二网络设备是管理所述至少一个候选目标主辅小区的网络设备，所述第三网络设备是管理所述源主小区的网络设备或者管理所述源主辅小区的网络设备。
  17. 根据权利要求16所述的方法，其特征在于，所述第三消息可以包括第一信息，所述第一信息指示发生过晚CPC。
  18. 一种终端设备，其特征在于，包括：
    处理单元，用于通过通信单元接收第一配置信息；所述第一配置信息包含至少一个候选目标主辅小区的信息和对应的主辅小区变更执行条件信息；所述第一配置信息用于确定 第一小区；所述第一小区是至少一个候选目标主辅小区中满足主辅小区变更执行条件的小区；
    所述终端设备的源主小区组MCG或源辅小区组SCG发生无线链路失败RLF，所述处理单元还用于通过所述通信单元发送第一消息；所述第一消息中包含第一时间段信息；
    所述第一时间段信息包括以下中的至少一项：
    所述终端设备接收到所述第一配置信息开始至所述源MCG或所述源SCG发生无线链路失败之间的时间段信息；所述源MCG或所述源SCG发生RLF开始至所述终端设备发送所述第一消息之间的时间段信息。
  19. 根据权利要求18所述的设备，其特征在于，
    在所述源MCG或源SCG发生RLF，且不存在所述第一小区时，所述通信单元用于发送所述第一消息。
  20. 根据权利要求18所述的设备，其特征在于：
    所述处理单元还用于，在所述源SCG发生RLF之后，根据所述第一配置信息确定出所述第一小区并向所述第一小区发起接入；
    若成功接入所述第一小区，所述第一时间段信息还包括以下中的至少一项：
    所述源SCG发生RLF开始至确定出所述第一小区之间的时间段信息；所述终端设备确定出所述第一小区开始至所述终端设备成功接入所述第一小区之间的时间段信息；所述终端设备成功接入所述第一小区开始至所述终端设备发送所述第一消息之间的时间段信息；
    若接入所述第一小区失败，且所述源MCG未发生RLF，第一时间段信息还包括以下中的至少一项：
    所述源SCG发生RLF开始至所述终端设备确定出所述第一小区之间的时间段信息；所述终端设备确定出所述第一小区开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述终端设备发送所述第一消息之间的时间段信息；
    若所述终端设备接入所述第一小区失败，且所述源MCG发生RLF，第一时间段信息包括以下中的至少一项：所述源SCG发生RLF开始至所述终端设备确定出所述第一小区之间的时间段信息；所述终端设备确定出所述第一小区开始至所述源MCG发生RLF之间的时间段信息；所述源MCG发生RLF开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述终端设备发送所述第一消息之间的时间段信息；
    或者，若所述终端设备接入所述第一小区失败，且所述源MCG发生RLF，第一时间段信息包括以下中的至少一项：
    所述源SCG发生RLF开始至所述终端设备确定出所述第一小区之间的时间段信息；所述终端设备确定出所述第一小区开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述源MCG发生RLF之间的时间段信息；所述源MCG发生RLF开始至所述终端设备发送所述第一消息之间的时间段信息。
  21. 根据权利要求18所述的设备，其特征在于，还包括：
    在所述源MCG或源SCG发生RLF之前，所述终端设备确定出所述第一小区，所述 第一时间段信息还包括以下中的至少一项：
    所述终端设备接收到所述第一配置信息开始至所述终端设备确定出所述第一小区之间的时间段信息；所述终端设备确定出所述第一小区开始至所述源MCG或所述源SCG发生RLF之间的时间段信息。
  22. 根据权利要求21所述的设备，其特征在于，还包括：
    所述终端设备成功接入所述第一小区，第一时间段信息还包括以下中的至少一项：
    所述源MCG或所述源SCG发生RLF开始至所述终端设备接入所述第一小区之间的时间段信息；所述终端设备接入所述第一小区开始至所述终端设备发送所述第一消息之间的时间段信息。
  23. 根据权利要求21所述的设备，其特征在于，在所述源MCG发生RLF之前，所述终端设备确定出所述第一小区，还包括：
    所述终端设备接入所述第一小区失败，且所述源SCG未发生RLF，所述第一时间段信息还包括以下中的至少一项：
    所述源MCG发生RLF开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述终端设备发送所述第一消息之间的时间段信息；或者
    所述终端设备接入所述第一小区失败，且所述源SCG发生RLF，第一时间段信息包括以下中的至少一项：所述源MCG发生RLF开始至所述源SCG发生RLF之间的时间段信息；所述源SCG发生RLF开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述终端设备发送所述第一消息之间的时间段信息；
    或者，所述终端设备接入所述第一小区失败，且所述源SCG发生RLF，第一时间段信息还包括以下中的至少一项：所述源MCG发生RLF开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述源SCG发生RLF之间的时间段信息；所述源SCG发生RLF开始至所述终端设备发送所述第一消息之间的时间段信息。
  24. 根据权利要求21所述的设备，其特征在于，在所述源SCG发生RLF之前，所述终端设备确定出所述第一小区，还包括：
    所述终端设备与所述第一小区接入失败，且所述源MCG未发生RLF，第一时间段信息还包括以下中的至少一项：所述源SCG发生RLF开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述终端设备发送所述第一消息之间的时间段信息；或者
    所述终端设备与所述第一小区接入失败，且所述源MCG发生RLF，第一时间段信息还包括以下中的至少一项：所述源SCG发生RLF开始至所述源MCG发生RLF之间的时间段信息；所述源MCG发生RLF开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述终端设备发送所述第一消息之间的时间段信息；
    或者，所述终端设备与所述第一小区接入失败，且所述源MCG发生RLF，所述第一时间段信息还包括以下中的至少一项：所述源SCG发生RLF开始至所述终端设备与所述第一小区接入失败之间的时间段信息；所述终端设备与所述第一小区接入失败开始至所述 源MCG发生RLF之间的时间段信息；所述源MCG发生RLF开始至所述终端设备发送所述第一消息之间的时间段信息。
  25. 根据权利要求18所述的设备，其特征在于，在所述终端设备成功接入所述第一小区之后，所述源MCG或源SCG发生RLF，所述第一时间段信息还包括以下中的至少一项：
    所述终端设备接收到所述第一配置信息开始至所述终端设备确定出所述第一小区之间的时间段信息；所述终端设备确定出所述第一小区开始至所述终端设备成功接入所述第一小区之间的时间段信息；所述终端设备成功接入所述第一小区开始至所述源MCG或源SCG发生RLF之间的时间段信息。
  26. 根据权利要求18-25任一所述的设备，其特征在于，所述处理单元还用于：
    通过所述通信单元发送第一指示信息；所述第一指示信息指示所述源MCG发生RLF或者所述源SCG发生RLF。
  27. 根据权利要求18-26任一所述的设备，其特征在于，所述第一消息还包括以下中的至少一项：
    所述源主小区的小区信息、所述源主辅小区的小区信息、所述至少一个候选目标主辅小区的小区信息。
  28. 根据权利要求18-27任一所述的设备，其特征在于，所述处理单元还用于：
    通过所述通信单元发送第二指示信息；
    通过所述通信单元接收响应于所述第二指示信息的请求消息；所述请求消息用于请求所述第一消息；
    所述处理单元在通过所述通信单元发送所述第一消息时，根据所述请求消息，发送所述第一消息。
  29. 一种网络设备，其特征在于，所述装置包括：
    处理单元，通过通信单元接收终端设备发送的第一消息；所述第一消息中包含所述终端设备的第一时间段信息；所述第一时间段信息包括以下中的至少一项：所述终端设备接收到所述第一配置信息开始至所述源MCG或所述源SCG发生无线链路失败之间的时间段信息；所述源MCG或所述源SCG发生RLF开始至所述终端设备发送所述第一消息之间的时间段信息；
    所述处理单元还用于通过所述通信单元向第二网络设备发送第二消息；所述第二消息包括所述第一消息的部分或全部；
    其中，所述网络设备是管理源主小区的网络设备，且所述第二网络设备是管理源主辅小区的网络设备；或者，所述装置是管理源主小区的网络设备，且所述第二网络设备是管理至少一个候选目标主辅小区的网络设备；或者，所述装置是管理源主辅小区的网络设备，且所述第二网络设备是管理源主小区的网络设备；或者，所述装置是管理源主辅小区的网络设备，且所述第二网络设备是管理至少一个候选目标主辅小区的网络设备；或者，所述装置是为所述终端设备提供通信的网络设备，所述第二网络设备是管理源主小区的网络设备；或者，所述装置是为所述终端设备提供通信的网络设备，所述第二网络设备是管理源主辅小区的网络设备；或者，所述装置为所述终端设备提供通信的网络设备，所述第二网络设备是管理至少一个候选目标主辅小区的网络设备；所述至少一个候选目标主辅小区是 管理所述终端设备的源主小区的网络设备为所述终端设备配置的。
  30. 根据权利要求29所述的设备，其特征在于，所述第二消息还包括第一信息，所述第一信息指示发生过晚条件主辅小区变更CPC。
  31. 根据权利要求29或30所述的设备，其特征在于：
    所述处理单元还用于，根据所述第一时间段信息，确定所述源SCG或源MCG发生RLF；并释放所述源SCG和/或所述源MCG、或者所述网络设备更改SCG和/或MCG、或者所述网络设备保持所述源SCG和/或所述源MCG不变化；其中，所述网络设备是所述管理源主小区的网络设备。
  32. 根据权利要求29-31任一所述的设备，其特征在于，所述处理单元通过所述通信单元接收终端设备发送的第一消息时，具体用于：
    接收所述终端设备发送的第二指示信息；
    响应于所述第二指示信息，向所述终端设备发送请求消息；所述请求消息用于请求所述第一消息；
    接收所述终端设备发送的所述第一消息。
  33. 一种网络设备，其特征在于，包括：处理单元和通信单元
    所述处理单元用于通过所述通信单元接收第一网络设备发送的第二消息；所述第二消息中包含所述终端设备的第一时间段信息；所述第一时间段信息包括以下中的至少一项：所述终端设备接收到所述第一配置信息开始至所述源MCG或所述源SCG发生无线链路失败之间的时间段信息；所述源MCG或所述源SCG发生RLF开始至所述终端设备发送所述第一消息之间的时间段信息；
    所述处理单元还用于通过所述通信单元向第三网络设备发送第三消息；所述第三消息包含所述第二消息中的部分或全部；
    其中，所述第一网络设备是为所述终端设备提供通信的网络设备；所述网络设备是管理所述至少一个候选目标主辅小区的网络设备，所述第三网络设备是管理所述源主小区的网络设备或者管理所述源主辅小区的网络设备。
  34. 根据权利要求33所述的设备，其特征在于，所述第三消息可以包括第一信息，所述第一信息指示发生过晚CPC。
  35. 一种通信装置，其特征在于，包括：处理器和存储器，
    所述存储器，用于存储计算机程序或指令；
    所述处理器，用于执行存储器中的计算机程序或指令，使得权利要求1-11中任一项所述的方法被执行或者使得权利要求12-15任一项所述的方法或者使得权利要求16-17任一项所述的方法被执行。
  36. 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存储有计算机可执行指令，所述计算机可执行指令在被计算机调用时，使所述计算机执行如权利要求1至11任一项所述的方法或者执行如权利要求12-15任一项所述的方法或者执行如权利要求16-17任一项所述的方法。
PCT/CN2020/110861 2020-08-24 2020-08-24 一种通信方法、设备和装置 WO2022040873A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/CN2020/110861 WO2022040873A1 (zh) 2020-08-24 2020-08-24 一种通信方法、设备和装置
CN202080103490.1A CN116057998A (zh) 2020-08-24 2020-08-24 一种通信方法、设备和装置
US18/174,117 US20230217327A1 (en) 2020-08-24 2023-02-24 Communication method, device, and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/110861 WO2022040873A1 (zh) 2020-08-24 2020-08-24 一种通信方法、设备和装置

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/174,117 Continuation US20230217327A1 (en) 2020-08-24 2023-02-24 Communication method, device, and apparatus

Publications (1)

Publication Number Publication Date
WO2022040873A1 true WO2022040873A1 (zh) 2022-03-03

Family

ID=80354305

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/110861 WO2022040873A1 (zh) 2020-08-24 2020-08-24 一种通信方法、设备和装置

Country Status (3)

Country Link
US (1) US20230217327A1 (zh)
CN (1) CN116057998A (zh)
WO (1) WO2022040873A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023201760A1 (zh) * 2022-04-22 2023-10-26 北京小米移动软件有限公司 PScell添加或改变的成功报告的记录方法、装置
WO2024032436A1 (zh) * 2022-08-10 2024-02-15 大唐移动通信设备有限公司 一种信息处理方法、装置及可读存储介质

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3681202A1 (en) * 2019-01-11 2020-07-15 LG Electronics Inc. Method and apparatus for mobility management in wireless communication system
WO2020145736A1 (en) * 2019-01-11 2020-07-16 Lg Electronics Inc. Method and apparatus for performing mobility related to dual connectivity in wireless communication system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3681202A1 (en) * 2019-01-11 2020-07-15 LG Electronics Inc. Method and apparatus for mobility management in wireless communication system
WO2020145736A1 (en) * 2019-01-11 2020-07-16 Lg Electronics Inc. Method and apparatus for performing mobility related to dual connectivity in wireless communication system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
FUTUREWEI: "Fast Pcell RLF recovery during intra-SN CPC", 3GPP DRAFT; R2-2000447, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. 20200224 - 20200306, 14 February 2020 (2020-02-14), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051849035 *
SAMSUNG: "Remaining issues concerning conditional change (mostly PSCell)", 3GPP DRAFT; R2-2001163, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Online; 20200224 - 20200304, 14 February 2020 (2020-02-14), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051849524 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023201760A1 (zh) * 2022-04-22 2023-10-26 北京小米移动软件有限公司 PScell添加或改变的成功报告的记录方法、装置
WO2024032436A1 (zh) * 2022-08-10 2024-02-15 大唐移动通信设备有限公司 一种信息处理方法、装置及可读存储介质

Also Published As

Publication number Publication date
US20230217327A1 (en) 2023-07-06
CN116057998A (zh) 2023-05-02

Similar Documents

Publication Publication Date Title
US11291064B2 (en) Communication method, network node, and radio access network system
WO2018196520A1 (zh) 一种波束管理方法及终端设备、网络设备
WO2021026906A1 (zh) 通信方法、通信装置、计算机存储介质及通信系统
WO2021185259A1 (zh) 通信方法及装置
WO2022051900A1 (zh) 发送成功切换报告的方法、终端设备和网络设备
US11877182B2 (en) Wireless communication method, terminal device and network device
WO2021164720A1 (zh) 重建立的方法和通信装置
US20220225203A1 (en) Communication Method and Communications Apparatus
US20230217327A1 (en) Communication method, device, and apparatus
WO2022083544A1 (zh) 辅小区状态的配置方法、激活辅小区的方法、设备及介质
EP3930356B1 (en) Communication method and device
WO2021051364A1 (zh) 一种通信方法、装置及设备
US20230180338A1 (en) Communication control method
US20230036797A1 (en) Time synchronization method and apparatus
WO2018014154A1 (zh) 一种rrc连接重建方法和装置
WO2019076347A1 (zh) 通信方法和通信装置
WO2021027660A1 (zh) 无线通信的方法和通信装置
WO2021208888A1 (zh) 一种通信方法和装置
WO2021258766A1 (zh) 一种配置终端设备的方法及设备
WO2021027907A1 (zh) 通信方法和通信装置
WO2022061545A1 (zh) 一种通信方法和装置
WO2022104531A1 (zh) 连接方法及相关装置
WO2021134763A1 (zh) 一种恢复传输的方法、装置及设备
WO2021088054A1 (zh) 一种通信方法及装置
WO2023050181A1 (zh) 无线通信方法及无线通信装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20950548

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20950548

Country of ref document: EP

Kind code of ref document: A1