WO2021027736A1 - 历史信息的记录方法、装置及计算机可读存储介质 - Google Patents

历史信息的记录方法、装置及计算机可读存储介质 Download PDF

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Publication number
WO2021027736A1
WO2021027736A1 PCT/CN2020/107879 CN2020107879W WO2021027736A1 WO 2021027736 A1 WO2021027736 A1 WO 2021027736A1 CN 2020107879 W CN2020107879 W CN 2020107879W WO 2021027736 A1 WO2021027736 A1 WO 2021027736A1
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WO
WIPO (PCT)
Prior art keywords
historical
cell
information
primary
terminal device
Prior art date
Application number
PCT/CN2020/107879
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English (en)
French (fr)
Inventor
胡星星
张宏平
石小丽
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.)
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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 EP20851783.9A priority Critical patent/EP4013126A4/en
Publication of WO2021027736A1 publication Critical patent/WO2021027736A1/zh
Priority to US17/670,798 priority patent/US20220167215A1/en

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    • 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
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0016—Hand-off preparation specially adapted for end-to-end data sessions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • 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
    • H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target 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
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00837—Determination of triggering parameters for hand-off
    • H04W36/008375—Determination of triggering parameters for hand-off based on historical data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/025—Services making use of location information using location based information parameters
    • H04W4/027—Services making use of location information using location based information parameters using movement velocity, acceleration information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/02—Data link layer protocols

Definitions

  • This application relates to the field of communications, and more specifically, to a method, device, and computer-readable storage medium for recording historical information.
  • the terminal device During the communication between a terminal device and a base station, the terminal device records the information of the cells it passes. After the base station obtains the information of the cell passed by the terminal device, it can optimize the movement of the terminal device according to the information of the cell passed by the terminal device, or it can also optimize the movement of the terminal device according to the information of the cell passed by the terminal device during the handover process. Send measurement configuration.
  • the secondary base station in addition to the primary base station that can trigger the terminal device to switch, can also trigger the terminal device to switch.
  • the secondary base station can trigger the terminal device to switch between multiple secondary base stations, or it can also trigger the terminal device to switch between cells under the secondary base station.
  • This application provides a method and device for recording historical information, and a computer-readable storage medium.
  • the secondary base station can configure some related measurement parameters according to the speed of the historical cell passed by the terminal device and the time spent in the historical cell to guide the secondary base station Trigger the terminal device to prepare for handover.
  • a method for recording historical information including: a current secondary node obtains information of historical cells passed by a terminal device, and the historical cell information includes the time that the terminal device stays in the historical cell and /Or the speed information of moving in the historical cell; the current secondary node prepares for handover according to the information of the historical cell.
  • the secondary node can obtain information about the time the terminal device stays in the historical cell and/or the speed of moving in the historical cell, and can accurately configure some related measurement parameters based on the above information, so as to guide the secondary base station to trigger the terminal device Prepare for switching.
  • the current secondary node receives the historical cell information from the terminal device or the current master node.
  • the historical cell includes one or more historical primary and secondary cells, and the one or more historical primary and secondary cells include one or more historical secondary nodes and/or current secondary nodes Primary and secondary cells.
  • the information of the one or more historical primary and secondary cells is recorded by the terminal device.
  • the historical cell information includes an association relationship between the one or more primary and secondary cells and one primary cell, wherein the terminal device accesses the one or more primary and secondary cells.
  • the terminal device accesses the primary cell
  • the primary cell is one or more historical primary nodes or primary cells under the current primary node.
  • the historical cell information further includes: indication information, the indication information is used to indicate that the terminal device has received the release information of the first secondary cell group, and the first secondary cell
  • the group is a cell group under the historical secondary node corresponding to the first historical primary and secondary cell, and the first historical primary and secondary cell is one of the one or more historical primary and secondary cells.
  • the historical cell information further includes radio resource control RRC state information of the terminal device in the historical cell, and the RRC state information includes connected state or idle state or inactive state. state.
  • the historical cell includes one or more historical primary and secondary cells, and the one or more historical primary and secondary cells include primary and secondary cells under one or more historical secondary nodes.
  • the information of the one or more historical primary and secondary cells is recorded by the one or more historical secondary nodes.
  • the method further includes: the current secondary node receives information of the one or more historical primary and secondary cells from the current primary node.
  • the one or more historical primary and secondary cells further include primary and secondary cells under the current secondary node.
  • the information of the primary and secondary cells under the current secondary node is recorded by the current secondary node.
  • the method further includes: the current secondary node sending information of the historical cell to the current primary node.
  • the historical cell information further includes RRC state information of the terminal device in the historical cell, and the RRC state information includes a connected state.
  • the historical cell information includes an association relationship between the one or more primary and secondary cells and one primary cell, wherein the terminal device accesses the one or more primary and secondary cells.
  • the terminal device accesses the primary cell
  • the primary cell is one or more historical primary nodes or primary cells under the current primary node.
  • the secondary node delivers the measurement configuration according to the information of the historical cell, or determines whether to perform handover.
  • the information of the historical cell further includes beam information of the terminal device in the historical cell.
  • the historical cell information includes one or more of the following:
  • the global cell identity CGI of the historical cell is the global cell identity CGI of the historical cell
  • the frequency of the historical cell is the frequency of the historical cell.
  • a method for recording historical information including: a terminal device records information about historical cells that the terminal device passes through, and the historical cell information includes the time that the terminal device stays in the historical cell And/or the speed information of moving in the historical cell, the historical cell includes one or more historical primary and secondary cells, and the one or more historical primary and secondary cells include one or more historical secondary nodes and/or the current secondary Primary and secondary cells under the node; the terminal device sends the historical cell information to the current secondary node.
  • the terminal device first sends the historical cell information to the current master node MN, and transparently transmits it to the current secondary node through the master node MN.
  • the historical cell information includes the association relationship between the one or more primary and secondary cells and one primary cell, wherein the terminal device accesses When the one or more primary and secondary cells are used, the terminal device accesses the primary cell, and the primary cell is one or more historical primary nodes or primary cells under the current primary node.
  • the historical cell information further includes: indication information, the indication information is used to indicate that the terminal device has received the release information of the first secondary cell group, and the first secondary cell
  • the group is a cell group under the historical secondary node corresponding to the first historical primary and secondary cell, and the first historical primary and secondary cell is one of the one or more historical primary and secondary cells.
  • the historical cell information further includes radio resource control RRC state information of the terminal device in the historical cell, and the RRC state information includes connected state or idle state or inactive state. state.
  • the information of the historical cell further includes beam information of the terminal device in the historical cell.
  • the historical cell information includes one or more of the following:
  • the global cell identity CGI of the historical cell is the global cell identity CGI of the historical cell
  • the frequency of the historical cell is the frequency of the historical cell.
  • a method for recording historical information including: a master node obtains information of historical cells passed by a terminal device, and the historical cell information includes the time that the terminal device stays in the historical cell and/ Or the speed information of moving in the historical cell; the master node sends the information of the historical cell to the secondary node.
  • the master node receives the historical cell information from the terminal device.
  • the information of the one or more historical primary and secondary cells is recorded by the terminal device.
  • the historical cell information includes an association relationship between the one or more primary and secondary cells and one primary cell, wherein the terminal device accesses the one or more primary and secondary cells.
  • the terminal device accesses the primary cell
  • the primary cell is one or more historical primary nodes or primary cells under the current primary node.
  • the historical cell information further includes: indication information, the indication information is used to indicate that the terminal device has received the release information of the first secondary cell group, and the first secondary cell
  • the group is a cell group under the historical secondary node corresponding to the first historical primary and secondary cell, and the first historical primary and secondary cell is one of the one or more historical primary and secondary cells.
  • the historical cell information further includes radio resource control RRC state information of the terminal device in the historical cell, and the RRC state information includes connected state or idle state or inactive state. state.
  • the method further includes: the primary node receiving the historical cell information sent by the secondary node.
  • the information of the historical cell further includes beam information of the terminal device in the historical cell.
  • the historical cell information includes one or more of the following:
  • the global cell identity CGI of the historical cell is the global cell identity CGI of the historical cell
  • the frequency of the historical cell is the frequency of the historical cell.
  • a device for recording historical information which includes a module, component or circuit for implementing the method of the first aspect.
  • the historical information recording device of the fourth aspect may be a secondary node, or a component (such as a chip or a circuit) that can be used for the secondary node.
  • a device for recording historical information including a module, component or circuit for implementing the method of the second aspect.
  • the historical information recording device of the fifth aspect may be a terminal device, or a component (such as a chip or a circuit) that can be used in a terminal device.
  • a device for recording historical information including a module, component or circuit for implementing the method of the third aspect.
  • the historical information recording device of the sixth aspect may be the master node, or a component (for example, a chip or a circuit) that can be used for the master node.
  • a secondary node including:
  • An acquisition module configured to acquire information about historical cells passed by a terminal device, where the historical cell information includes the time that the terminal device stays in the historical cell and/or the speed information of moving in the historical cell;
  • the processing module is used to prepare for handover according to the information of the historical cell.
  • the secondary node can obtain information about the time the terminal device stays in the historical cell and/or the speed of moving in the historical cell, and can accurately configure some related measurement parameters based on the above information, so as to guide the secondary base station to trigger the terminal device Prepare for switching.
  • the acquiring module is specifically configured to: receive the historical cell information from the terminal device or the current master node.
  • the historical cell includes one or more historical primary and secondary cells, and the one or more historical primary and secondary cells include one or more historical secondary nodes and/or current secondary nodes Primary and secondary cells.
  • the information of the one or more historical primary and secondary cells is recorded by the terminal device.
  • the historical cell information includes an association relationship between the one or more primary and secondary cells and one primary cell, wherein the terminal device accesses the one or more primary and secondary cells.
  • the terminal device accesses the primary cell
  • the primary cell is one or more historical primary nodes or primary cells under the current primary node.
  • the historical cell information further includes: indication information, the indication information is used to indicate that the terminal device has received the release information of the first secondary cell group, and the first secondary cell
  • the group is a cell group under the historical secondary node corresponding to the first historical primary and secondary cell, and the first historical primary and secondary cell is one of the one or more historical primary and secondary cells.
  • the historical cell information further includes radio resource control RRC state information of the terminal device in the historical cell, and the RRC state information includes connected state or idle state or inactive state. state.
  • the historical cell includes one or more historical primary and secondary cells, and the one or more historical primary and secondary cells include primary and secondary cells under one or more historical secondary nodes.
  • the information of the one or more historical primary and secondary cells is recorded by the one or more historical secondary nodes.
  • the acquiring module is further configured to: receive information of the one or more historical primary and secondary cells from the current primary node.
  • the one or more historical primary and secondary cells further include primary and secondary cells under the current secondary node.
  • the information of the primary and secondary cells under the current secondary node is recorded by the current secondary node.
  • the auxiliary node further includes:
  • the sending module is used to send the information of the historical cell to the current master node.
  • the historical cell information further includes RRC state information of the terminal device in the historical cell, and the RRC state information includes a connected state.
  • the historical cell information includes an association relationship between the one or more primary and secondary cells and one primary cell, wherein the terminal device accesses the one or more primary and secondary cells.
  • the terminal device accesses the primary cell
  • the primary cell is one or more historical primary nodes or primary cells under the current primary node.
  • the processing module is specifically configured to: issue a measurement configuration according to the historical cell information, or determine whether to perform handover.
  • the information of the historical cell further includes beam information of the terminal device in the historical cell.
  • the historical cell information includes one or more of the following:
  • the global cell identity CGI of the historical cell is the global cell identity CGI of the historical cell
  • the frequency of the historical cell is the frequency of the historical cell.
  • a terminal device including:
  • the recording module is used to record the information of the historical cell that the terminal equipment passes through, the information of the historical cell includes the time that the terminal equipment stays in the historical cell and/or the speed information of moving in the historical cell,
  • the historical cell includes one or more historical primary and secondary cells, and the one or more historical primary and secondary cells include one or more historical secondary nodes and/or primary and secondary cells under the current secondary node;
  • the sending module is used to send the information of the historical cell to the current secondary node.
  • the terminal device first sends the historical cell information to the current master node MN, and transparently transmits it to the current secondary node through the master node MN.
  • the historical cell information includes the association relationship between the one or more primary and secondary cells and one primary cell, wherein the terminal device accesses When the one or more primary and secondary cells are used, the terminal device accesses the primary cell, and the primary cell is one or more historical primary nodes or primary cells under the current primary node.
  • the historical cell information further includes: indication information, the indication information is used to indicate that the terminal device has received the release information of the first secondary cell group, and the first secondary cell
  • the group is a cell group under the historical secondary node corresponding to the first historical primary and secondary cell, and the first historical primary and secondary cell is one of the one or more historical primary and secondary cells.
  • the historical cell information further includes radio resource control RRC state information of the terminal device in the historical cell, and the RRC state information includes connected state or idle state or inactive state. state.
  • the information of the historical cell further includes beam information of the terminal device in the historical cell.
  • the historical cell information includes one or more of the following:
  • the global cell identity CGI of the historical cell is the global cell identity CGI of the historical cell
  • the frequency of the historical cell is the frequency of the historical cell.
  • a master node including:
  • An acquisition module configured to acquire information about historical cells passed by a terminal device, where the historical cell information includes the time that the terminal device stays in the historical cell and/or the speed information of moving in the historical cell;
  • the sending module is used to send the information of the historical cell to the secondary node.
  • the acquiring module is specifically configured to: receive the historical cell information from the terminal device.
  • the information of the one or more historical primary and secondary cells is recorded by the terminal device.
  • the historical cell information includes an association relationship between the one or more primary and secondary cells and one primary cell, wherein the terminal device accesses the one or more primary and secondary cells.
  • the terminal device accesses the primary cell
  • the primary cell is one or more historical primary nodes or primary cells under the current primary node.
  • the historical cell information further includes: indication information, the indication information is used to indicate that the terminal device has received the release information of the first secondary cell group, and the first secondary cell
  • the group is a cell group under the historical secondary node corresponding to the first historical primary and secondary cell, and the first historical primary and secondary cell is one of the one or more historical primary and secondary cells.
  • the historical cell information further includes radio resource control RRC state information of the terminal device in the historical cell, and the RRC state information includes connected state or idle state or inactive state. state.
  • the acquiring module is configured to receive the historical cell information sent by the secondary node.
  • the information of the historical cell further includes beam information of the terminal device in the historical cell.
  • the historical cell information includes one or more of the following:
  • the global cell identity CGI of the historical cell is the global cell identity CGI of the historical cell
  • the frequency of the historical cell is the frequency of the historical cell.
  • a device for recording historical information including: the device for recording historical information provided by this application has the function of realizing the behavior of the auxiliary node in the above method, and includes the steps or functions for performing the steps described in the above method. Corresponding parts (means). The steps or functions can be realized by software, or by hardware (such as a circuit), or by a combination of hardware and software. Wherein, the historical information recording device may be a chip or the like.
  • the foregoing historical information recording device includes one or more processors.
  • the one or more processors are configured to support the recording device of the historical information to perform the corresponding function of the auxiliary node in the above method.
  • the historical information recording device may further include one or more memories, which are configured to be coupled with the processor and store program instructions and/or data necessary for the historical information recording device.
  • the one or more memories may be integrated with the processor, or may be provided separately from the processor. This application is not limited.
  • the memory may be a storage unit inside the processor, or an external storage unit independent of the processor, or a component including a storage unit inside the processor and an external storage unit independent of the processor.
  • the processor may be a general-purpose processor, which may be implemented by hardware or software.
  • the processor may be a logic circuit, integrated circuit, etc.; when implemented by software, the processor may be a general-purpose processor, which is implemented by reading software codes stored in the memory, and the memory may Integrated in the processor, can be located outside of the processor, and exist independently.
  • the historical information recording device may further include one or more communication units, and the communication units may be transceivers or transceiver circuits.
  • the transceiver may also be an input/output circuit or interface.
  • the above-mentioned historical information recording device includes a transceiver, a processor, and a memory.
  • the processor is used to control the transceiver or the input/output circuit to send and receive signals
  • the memory is used to store a computer program
  • the processor is used to run the computer program in the memory so that the historical information recording device executes the first aspect or the first aspect The method used by the auxiliary node in any of the possible implementation modes.
  • a device for recording historical information including: the device for recording historical information provided by this application has the function of realizing the behavior of the terminal device in the above method, and includes the steps or functions for performing the steps or functions described in the above method Corresponding parts (means).
  • the steps or functions can be realized by software, or by hardware (such as a circuit), or by a combination of hardware and software.
  • the historical information recording device may be a chip or the like.
  • the foregoing historical information recording device includes one or more processors.
  • the one or more processors are configured to support the recording device of the historical information to perform the corresponding functions of the terminal device in the foregoing method.
  • the historical information recording device may further include one or more memories, which are configured to be coupled with the processor and store program instructions and/or data necessary for the communication device.
  • the one or more memories may be integrated with the processor, or may be provided separately from the processor. This application is not limited.
  • the memory may be a storage unit inside the processor, or an external storage unit independent of the processor, or a component including a storage unit inside the processor and an external storage unit independent of the processor.
  • the processor may be a general-purpose processor, which may be implemented by hardware or software.
  • the processor may be a logic circuit, integrated circuit, etc.; when implemented by software, the processor may be a general-purpose processor, which is implemented by reading software codes stored in the memory, and the memory may Integrated in the processor, it can be located outside the processor and exist independently.
  • the historical information recording device may further include one or more communication units, and the communication units may be transceivers or transceiver circuits.
  • the transceiver may also be an input/output circuit or interface.
  • the above-mentioned historical information recording device includes a transceiver, a processor, and a memory.
  • the processor is used to control the transceiver or the input/output circuit to send and receive signals
  • the memory is used to store a computer program
  • the processor is used to run the computer program in the memory so that the historical information recording device executes the second aspect or the second aspect The method completed by the terminal device in any possible implementation manner.
  • a device for recording historical information including: the device for recording historical information provided by this application has the function of realizing the behavior of the master node in the above method, and includes the steps or functions for performing the steps or functions described in the above method Corresponding parts (means).
  • the steps or functions can be realized by software, or by hardware (such as a circuit), or by a combination of hardware and software.
  • the historical information recording device may be a chip or the like.
  • the foregoing historical information recording device includes one or more processors.
  • the one or more processors are configured to support the historical information recording device to perform the corresponding functions of the master node in the above method.
  • the historical information recording device may further include one or more memories, which are configured to be coupled with the processor and store program instructions and/or data necessary for the historical information recording device.
  • the one or more memories may be integrated with the processor, or may be provided separately from the processor. This application is not limited.
  • the memory may be a storage unit inside the processor, or an external storage unit independent of the processor, or a component including a storage unit inside the processor and an external storage unit independent of the processor.
  • the processor may be a general-purpose processor, which may be implemented by hardware or software.
  • the processor may be a logic circuit, integrated circuit, etc.; when implemented by software, the processor may be a general-purpose processor, which is implemented by reading software codes stored in the memory, and the memory may Integrated in the processor, can be located outside of the processor, and exist independently.
  • the historical information recording device may further include one or more communication units, and the communication units may be transceivers or transceiver circuits.
  • the transceiver may also be an input/output circuit or interface.
  • the above-mentioned historical information recording device includes a transceiver, a processor, and a memory.
  • the processor is used to control the transceiver or the input/output circuit to send and receive signals
  • the memory is used to store a computer program
  • the processor is used to run the computer program in the memory so that the historical information recording device executes the third aspect or the third aspect The method completed by the master node in any of the possible implementations.
  • a computer-readable storage medium including a computer program, which when the computer program runs on a terminal device, causes the historical information recording device to execute any one of the first aspect or the first aspect Implement the method described in the mode.
  • a computer-readable storage medium including a computer program, which when the computer program runs on a communication device, causes the historical information recording device to execute the second aspect or any one of the implementation manners of the second aspect The method described in.
  • a computer-readable storage medium including a computer program, which when the computer program runs on a communication device, causes the historical information recording device to execute the third aspect or any one of the implementation manners of the third aspect The method described in.
  • a computer program product is provided.
  • the computer program product runs on a computer, the computer executes the method described in the first aspect or any one of the first aspects.
  • a computer program product which when the computer program product runs on a computer, causes the computer to execute the method described in the second aspect or any one of the second aspects.
  • a computer program product is provided.
  • the computer program product runs on a computer, the computer executes the method described in the third aspect or any one of the implementation manners of the third aspect.
  • FIG. 1 is a schematic diagram of a scene of a communication system 100 applicable to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a communication system 200 applicable to the present application.
  • Fig. 3 is a schematic diagram of a DC architecture suitable for this application.
  • Fig. 4 is a schematic diagram of another DC architecture applicable to the present application.
  • Fig. 5 is a schematic diagram of another DC architecture applicable to the present application.
  • Fig. 6 is a schematic diagram of another DC architecture applicable to the present application.
  • FIG. 7 is a schematic flowchart of a method for recording historical information provided by an embodiment of the present application.
  • FIG. 8 is a schematic flowchart of another method for recording historical information provided by an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of another method for recording historical information provided by an embodiment of the present application.
  • FIG. 10 is a schematic flowchart of another method for recording historical information according to an embodiment of the present application.
  • FIG. 11 is a schematic flowchart of another method for recording historical information according to an embodiment of the present application.
  • FIG. 12 is a schematic diagram of a possible MN handover and SN handover provided by an embodiment of the present application.
  • FIG. 13 is a schematic diagram of another possible MN handover and SN handover provided by an embodiment of the present application.
  • FIG. 14 is a schematic flowchart of another method for recording historical information provided by an embodiment of the present application.
  • FIG. 15 is a schematic flowchart of another method for recording historical information provided by an embodiment of the present application.
  • FIG. 16 is a schematic flowchart of another method for recording historical information provided by an embodiment of the present application.
  • FIG. 17 is a schematic flowchart of a method for congestion analysis provided by an embodiment of the present application.
  • FIG. 18 is a schematic flowchart of a method for analyzing potential changes of qos provided by an embodiment of the present application.
  • FIG. 19 is a schematic block diagram of a device 1900 for recording historical information according to an embodiment of the present application.
  • FIG. 20 is a schematic block diagram of an apparatus 2000 for recording historical information according to an embodiment of the present application.
  • FIG. 21 is a schematic block diagram of an apparatus 2100 for recording historical information according to an embodiment of the present application.
  • FIG. 22 is a schematic block diagram of a secondary node 2200 according to an embodiment of the present application.
  • FIG. 23 is a schematic block diagram of a terminal device 2300 according to an embodiment of the present application.
  • FIG. 24 is a schematic block diagram of a master node 2400 according to an embodiment of the present application.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA broadband code Wideband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • the type of terminal equipment is not specifically limited.
  • it may be user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile Equipment, user terminal, wireless network equipment, user agent or user device.
  • UE user equipment
  • access terminal user unit
  • user station mobile station
  • mobile station mobile station
  • remote station remote terminal
  • mobile Equipment user terminal
  • wireless network equipment user agent or user device.
  • Terminals can include, but are not limited to, mobile stations (MS), mobile phones (mobile phones), user equipment (UE), mobile phones (handset), portable equipment (portable equipment), cellular phones, cordless phones, conversations Initiation protocol (session initiation protocol, SIP) phones, wireless local loop (wireless local loop, WLL) stations, personal digital processing (personal digital assistant, PDA), logistics use radio frequency identification (radio frequency identification, RFID) terminal equipment, Handheld devices with wireless communication functions, computing devices or other devices connected to wireless modems, in-vehicle devices, wearable devices, Internet of Things, terminal devices in vehicle networks, and terminal devices in future 5G networks or future evolution of public land mobile The terminal equipment in the network (public land mobile network, PLMN) network, etc.
  • MS mobile stations
  • UE user equipment
  • WLL wireless local loop
  • PDA personal digital assistant
  • RFID radio frequency identification
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices. 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.
  • a wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones.
  • the type of network equipment is not specifically limited. It can be any equipment used to communicate with terminal equipment.
  • the network equipment can be, for example, global system of mobile communication (GSM) or code division multiple access.
  • the base transceiver station (BTS) in (code division multiple access, CDMA) can also be the base station (NodeB, NB) in the wideband code division multiple access (WCDMA) system, or it can be long-term
  • the evolved base station (evolutional Node B, eNB or eNodeB) in the evolution (long term evolution, LTE) system can also be the wireless controller in the cloud radio access network (cloud radio access network, CRAN) scenario, or the network
  • the device may be, for example, a relay station, an access point, a vehicle-mounted device, a wearable device, and a network device in a future 5G network or a network device in a future evolved PLMN network.
  • the network device provides services for the cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell.
  • the cell can be a cell corresponding to a network device (e.g. a base station).
  • the cell can belong to a macro base station or a base station corresponding to a small cell.
  • the small cell here can include: Metro cell, micro cell ( Micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-rate data transmission services.
  • the method provided by the embodiments of the present application can be applied to a terminal device or a network device, which includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating systems, Unix operating systems, Android operating systems, iOS operating systems, or windows operating systems.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the specific structure of the execution body of the method of transmitting a signal is not particularly limited in the embodiment of the present application, as long as the program recorded with the code of the method of the embodiment of the present application can be run according to the present application.
  • the method of the embodiment only needs to communicate.
  • the execution subject of the method of the embodiment of the present application may be a terminal device or a network device, or a functional module in the terminal device or network device that can call and execute the program.
  • various aspects or features of the embodiments of the present application may be implemented as methods, devices, or products using standard programming and/or engineering techniques.
  • article of manufacture as used in this application encompasses a computer program accessible from any computer-readable device, carrier, or medium.
  • computer-readable media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CD), digital versatile discs (DVD)) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
  • various storage media described herein may represent one or more devices and/or other machine-readable media for storing information.
  • the term "machine-readable medium” may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.
  • FIG. 1 is a schematic diagram of a scene of a communication system 100 applicable to an embodiment of the present application.
  • the communication system 100 includes a network device 102, and the network device 102 may include multiple antenna groups.
  • Each antenna group may include multiple antennas.
  • one antenna group may include antennas 104 and 106, another antenna group may include antennas 106 and 110, and an additional group may include antennas 112 and 114.
  • Each antenna group in Figure 1 shows 2 antennas, however, more or fewer antennas can be used for each group.
  • the network device 102 may additionally include a transmitter chain and a receiver chain. Those of ordinary skill in the art can understand that they can each include multiple components related to signal transmission and reception (such as processors, modulators, multiplexers, and decoders). Tuner, demultiplexer or antenna, etc.).
  • the network device 102 may communicate with multiple terminal devices (for example, the terminal device 116 and the terminal device 122). However, it is understood that the network device 102 can communicate with any number of terminal devices similar to the terminal device 116 or 122.
  • the terminal devices 116 and 122 may be, for example, cellular phones, smart phones, portable computers, handheld communication devices, handheld computing devices, satellite radios, global positioning systems, PDAs, and/or any other suitable for communicating on the wireless communication system 100. equipment.
  • the terminal device 116 communicates with antennas 112 and 114, where the antennas 112 and 114 send information to the terminal device 116 through the forward link 116 and receive information from the terminal device 116 through the reverse link 120.
  • the terminal device 122 communicates with antennas 104 and 106, where the antennas 104 and 106 transmit information to the terminal device 122 through the forward link 124, and receive information from the terminal device 122 through the reverse link 126.
  • the forward link 116 can use a different frequency band from the reverse link 120, and the forward link 124 can use the same frequency band as the reverse link. 126 different frequency bands used.
  • FDD frequency division duplex
  • the forward link 116 and the reverse link 120 can use a common frequency band, and the forward link 124 and the reverse The link 126 may use a common frequency band.
  • Each set of antennas and/or areas that are designed for communication is referred to as a sector of the network device 102.
  • the antenna group may be designed to communicate with terminal devices in a sector of the area covered by the network device 102.
  • the transmitting antenna of the network device 102 can use beamforming to improve the signal-to-noise ratio of the forward links 116 and 124.
  • the network device 102 uses beamforming to send signals to terminal devices 116 and 122 that are randomly dispersed in the relevant coverage area, Mobile devices will experience less interference.
  • the network device 102, the terminal device 116, or the terminal device 122 may be a wireless communication sending device and/or a wireless communication receiving device.
  • the wireless communication sending device can encode the data for transmission.
  • the wireless communication sending device can acquire (for example, generate, receive from other communication devices, or store in a memory, etc.) a certain number of data bits to be sent to the wireless communication receiving device through a channel.
  • Such data bits may be included in a transmission block (or multiple transmission blocks) of data, and the transmission block may be segmented to generate multiple code blocks.
  • the communication system 100 may be a public land mobile network PLMN network or a device-to-device (D2D) network or a machine-to-machine (M2M) network or other networks.
  • PLMN public land mobile network
  • D2D device-to-device
  • M2M machine-to-machine
  • FIG. 1 is only an example for ease of understanding
  • the simplified schematic diagram of the network may also include other network equipment, which is not shown in Figure 1.
  • FIG. 2 is a schematic diagram of a communication system 200 applicable to the present application.
  • the communication system 200 may include at least two network devices, such as a network device 210 and a network device 220, and the communication system 200 may also include at least one terminal device, such as a terminal device 230.
  • the communication system 200 may also include at least one core network device, such as a core network device 240.
  • FIG. 2 is only a schematic diagram, and the communication system may also include other network devices.
  • the embodiments of the present application do not limit the number of network devices and terminal devices included in the mobile communication system.
  • the network equipment may also be referred to as a radio access network (RAN) equipment, which is a type of terminal equipment that connects to a wireless network. equipment.
  • RAN radio access network
  • the network equipment can be an evolved base station eNB or eNodeB in LTE, or a relay station or an access point, or a base station (ng-eNB or gNB) in a 5G network, such as transmission and reception points. point, TRP), controller, this application is not specifically limited here.
  • the terminal device 230 can connect the network device 210 and the network device 220 through an air interface.
  • the network device 210 and the network device 220 can be connected in a wired or wireless manner, and the network device 210 and the network device 220 can be wired or Connect to the core network device 240 in a wireless manner.
  • the core network device 240 may be a 4G core network device or a 5G core network device.
  • the network device 210 may be an LTE base station or an NR base station, and the network device 220 may be an LTE base station or an NR base station.
  • the terminal device 230 may communicate with the network device 210 and the network device 220 by adopting dual connectivity (DC) technology.
  • DC dual connectivity
  • the DC technology supports two different network devices (for example, the network device 210 and the network device 220) to provide data transmission services for one terminal device 230 at the same time.
  • one network device may be called a primary base station or a master node (master node, MN), and the other network device is called a secondary base station or a secondary node (secondary node, SN).
  • master node MN
  • secondary base station secondary node
  • the primary base station and the secondary base station may be base stations of the same standard, or may also be base stations of different mechanisms.
  • the primary base station is a master base station (master gNB, MgNB) of the NR standard
  • the secondary base station is a secondary base station (secondary gNB, SgNB) of the NR standard.
  • the primary base station may be a master base station (master eNB, MeNB) of the LTE standard
  • the secondary base station may be a secondary base station (secondary eNB, SeNB) of the LTE standard.
  • the primary base station is the primary base station MgNB of the NR standard
  • the secondary base station is the secondary base station SeNB of the LTE standard.
  • the primary base station is the primary base station MeNB of the LTE standard
  • the secondary base station is the secondary base station SgNB of the NR standard. Therefore, there are many combinations of DCs. The following describes several possible DC combinations with reference to Figure 3 to Figure 6.
  • the core network device 240 is a packet core network (evolved packet core, EPC), the LTE base station serves as the MN, and the NR base station serves as the SN, which may also be referred to as EN-DC (E-UTRA NR DC).
  • EPC packet core network
  • the LTE base station and the NR base station can be connected through an X2 interface at this time, at least there is a control plane connection, and there may be a user plane connection.
  • the LTE base station and the EPC can be connected through an S1 interface, at least a control plane connection, and possibly a user plane connection.
  • the NR base station and the EPC can be connected through the S1-U interface, that is, there can only be a user plane connection.
  • the LTE base station may provide air interface resources for the terminal device 230 through at least one LTE cell.
  • the at least one LTE cell is called a master cell group (MCG).
  • the NR base station may also provide air interface resources for the terminal device 230 through at least one NR cell.
  • the at least one NR cell is called a secondary cell group (SCG).
  • the core network equipment 240 is a 5G core network (5G core, 5GC), the LTE base station serves as the MN, and the NR base station serves as the SN, which may also be called NGEN-DC (NG-RAN E-UTRA-NR dual connectivity).
  • 5G core 5G core, 5GC
  • the LTE base station and the NR base station can be connected through an Xn interface, at least there is a control plane connection, and there may be a user plane connection.
  • the LTE base station and the 5GC can be connected through an NG interface, at least a control plane connection, and possibly a user plane connection.
  • the NR base station and the 5GC can be connected through the NG-U interface, that is, there can only be a user plane connection.
  • the LTE base station may provide air interface resources for the terminal device 230 through at least one LTE cell, and at this time, the at least one LTE cell is called MCG.
  • the NR base station may also provide air interface resources for the terminal device 230 through at least one NR cell, and in this case, the at least one NR cell is called an SCG.
  • the NR base station serves as the MN
  • the LTE base station serves as the SN, which can also be called NE-DC (NR-E-UTRA dual connectivity).
  • the NR base station and the LTE base station can be connected through an Xn interface, at least there is a control plane connection, and there may be a user plane connection.
  • the NR base station and the 5GC can be connected through the NG interface, at least with a control plane connection, and possibly a user plane connection.
  • There is an NG-U interface between the LTE base station and the 5GC that is, there can only be a user plane connection.
  • the NR base station can provide air interface resources for the terminal device 230 through at least one NR cell, and the at least one NR cell is called MCG at this time.
  • the LTE base station may also provide air interface resources for the terminal device 230 through at least one LTE cell, and in this case, the at least one LTE cell is called an SCG.
  • NG eNB refers to an LTE eNB that can connect to 5GC.
  • NG LTE may also be called eLTE, which is not specifically limited in the embodiment of this application.
  • both MN and SN are NR base stations, which can also be called NR-NR DC.
  • both the primary base station and the secondary base station are NR base stations.
  • the NR primary base station and the NR secondary base station can be connected through an Xn interface, at least a control plane connection, and a user plane connection.
  • the NR master base station can provide air interface resources for the terminal device 230 through at least one NR cell, and at this time, the at least one NR cell is called an MCG.
  • the NR secondary base station can also provide air interface resources for the terminal device 230 through at least one NR cell, and in this case, the at least one NR cell is called an SCG.
  • MCG is composed of a primary cell and optionally one or more secondary cells
  • SCG may be composed of one primary and secondary cell and optionally one or more secondary cells.
  • the LTE base station is an eNB and the NR base station is a gNB as an example for description, but this should not constitute any limitation to this application. It should also be understood that the foregoing several DC combinations are only described as examples, and the embodiments of the present application should not be limited to the foregoing DC combinations.
  • the functions of the terminal device may be implemented by hardware components inside the terminal device, and the hardware components may be internal hardware components of the terminal device.
  • the chip may be implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD).
  • ASIC application-specific integrated circuit
  • PLD programmable logic device
  • the above-mentioned PLD can be a complex programmable logical device (CPLD), a field-programmable gate array (FPGA), a generic array logic (generic array logic, GAL), a system on a chip , SOC) or any combination thereof.
  • CPLD complex programmable logical device
  • FPGA field-programmable gate array
  • GAL generic array logic
  • SOC system on a chip
  • a plurality of in the embodiments of the present application refers to two or more than two. In view of this, “a plurality of” may also be understood as “at least two” in the embodiments of the present application. "At least one" can be understood as one or more, for example, one, two or more. For example, including at least one refers to including one, two or more, and does not limit which ones are included. For example, including at least one of A, B, and C, then the included can be A, B, C, A and B, A and C, B and C, or A and B and C.
  • the terminal device During the communication between a terminal device and a base station, the terminal device records the information of the cells it passes. After the base station obtains the information of the cell passed by the terminal device, it can optimize the movement of the terminal device according to the information of the cell passed by the terminal device, or it can also optimize the movement of the terminal device according to the information of the cell passed by the terminal device during the handover process. Send measurement configuration.
  • the secondary base station in addition to the primary base station that can trigger the terminal device to switch, can also trigger the terminal device to switch.
  • the secondary base station can trigger the terminal device to switch between multiple secondary base stations, or it can also trigger the terminal device to switch between cells under the secondary base station.
  • the secondary base station can configure some related measurement parameters according to the speed of the historical cell passed by the terminal device and/or the time spent in the historical cell, so as to guide the secondary base station to trigger the terminal device to switch ready.
  • the method for recording historical information provided by the embodiment of the present application will be described in detail below with reference to FIG. 7.
  • FIG. 7 is a schematic flowchart of a method for recording historical information provided by an embodiment of the present application. As shown in Fig. 7, the method may include steps 710-720, and steps 710-720 will be described in detail below.
  • Step 710 The current secondary node obtains information of historical cells passed by the terminal device.
  • the information of the historical cell may be the information of the historical cell passed by the terminal device, where passing can be understood as the terminal device accessing the cell or the terminal device camping in the cell or the cell providing communication or connection services for the terminal device.
  • the information of the historical cell includes the time that the terminal device stays in the historical cell and/or the speed of moving in the historical cell.
  • the current secondary node can be understood as the secondary node providing communication or connection services for the terminal device, or the terminal device accessing the secondary node.
  • the current master node can be understood as the master node providing communication or connection services for the terminal device, or the terminal device accessing the master node.
  • the current secondary node can obtain the information of the historical cell that the terminal device passes through. It can receive the information of the historical cell from the terminal device, or can receive the information of the historical cell and the information of the historical cell from the master node MN. It can be recorded by the primary node MN, or recorded by the terminal device and reported to the primary node MN, or recorded by the terminal device and reported to the secondary node, or in a handover scenario, the primary node MN acts as The target base station is recorded by the network side obtained from other nodes, or the master node MN is used as the target base station and reported from the terminal equipment obtained from other nodes. The detailed description will be given below in conjunction with specific embodiments, and will not be repeated here.
  • the speed information of the terminal device passing through the historical cell can be reported by the terminal device itself, or the master node MN can determine the speed according to the time that the terminal device stays in the past historical cell and the coverage area of the frequency point cell corresponding to the master node MN. Information, this application does not specifically limit this.
  • the speed information of the terminal device passing through the historical cell can be a specific speed value, or it can also be movement status information.
  • the movement status information can include, but is not limited to: high movement status, medium speed movement status, Low-speed moving state.
  • the time that the terminal device stays in the past historical cell may be the time that the terminal device stays in the corresponding cell, or it may also be the time point when the terminal device enters the cell, for example, absolute time, a certain year Month and so on.
  • the time that the terminal device stays in the historical cell may be reported by the terminal device itself, or the master node MN may determine that the terminal device is in a cell based on the time the terminal device stays in the historical cell and the number of historical cells passed. The time spent in the historical district.
  • the information of the historical cells passed by the terminal device includes one or more of the following situations: the information of the cells passed by the terminal device in the idle state (RRC_idle), and the terminal device is in the inactive state (RRC_inactive) Cell information that the terminal device passes through in the connected state (RRC_connected).
  • RRC_idle the information of the cells passed by the terminal device in the idle state
  • RRC_inactive Cell information that the terminal device passes through in the connected state
  • Step 720 The secondary node prepares for handover according to the information of the historical cell.
  • the handover preparation in the embodiment of the present application may include, but is not limited to: the secondary node SN delivers the measurement configuration to the terminal device, and the secondary node SN determines whether to perform the handover.
  • the secondary node SN may determine the time to trigger in the measurement configuration according to the information of the historical cells passed by the terminal device. For example, when the speed of the terminal device passing through the historical cell is relatively high (for example, greater than a speed threshold), the trigger reporting time in the measurement configuration can be set to be shorter (for example, less than a time threshold), so that the terminal device can operate at a shorter time. The measurement result is triggered within the specified time.
  • the trigger reporting time in the measurement configuration can be set longer (for example, greater than a time threshold) to ensure the measurement result of the terminal device Accuracy or avoid switching terminal equipment prematurely.
  • the secondary node SN may determine whether to switch to the target cell according to the time the terminal device stays in the past historical cell and/or the speed information of the past historical cell. For example, if the secondary node SN stays in a certain cell for a short time (for example, less than a time threshold) and/or the speed through the cell is small (for example, less than a speed threshold), the secondary node SN may determine not to switch to the cell .
  • the secondary node SN may consider handing over to the cell. For another example, the secondary node SN determines that the moving speed of the terminal device is relatively low (for example, less than a speed threshold) based on the time spent in the historical cell passed by the terminal device and/or the speed information of the historical cell. The terminal device switches to a cell with a small coverage area (for example, a cell with a coverage area smaller than one).
  • the secondary node SN may determine that there is no need to switch the terminal device to a cell with a smaller coverage area (for example, a cell larger than a coverage area).
  • greater than in the embodiments of the present application can be understood as one value greater than the other value, that is, for any two values (the first value, the second value) that exist, the corresponding point can be found on the same number axis. , If the first value is to the right of the second value, the first value is greater than the second value. Less than is understood to mean that one value is smaller than the other, that is, for any two values (the first value, the second value), the corresponding point can be found on the same number axis, if the first value is in the second value To the left of, the first value is less than the second value.
  • the following takes the information of historical cells passed by the terminal device as the cell information passed by the terminal device in RRC_idle and/or the information of the primary cell passed in the connected state (RRC_connected) as an example, and a detailed description will be given with reference to FIGS. 8-11.
  • the following examples are only to help those skilled in the art understand the embodiments of the present application, and are not intended to limit the application embodiments to the specific numerical values or specific scenarios illustrated. Those skilled in the art can obviously make various equivalent modifications or changes based on the examples given, and such modifications and changes also fall within the scope of the embodiments of the present application.
  • FIG. 8 is a schematic flowchart of another method for recording historical information provided by an embodiment of the present application. As shown in the figure, the method includes steps 810-820, and steps 810-820 are respectively described in detail below.
  • Step 810 The current master node MN sends the information of the historical cells passed by the terminal device to the current secondary node SN.
  • the information of the historical cells passed by the terminal device obtained by the current secondary node SN may include but is not limited to one or more of the following:
  • Physical cell identification (physical cell identification, PCI) of the historical cell passed by the terminal device;
  • GCI Global cell identity
  • the cell type of the historical cell that the terminal device passes through (for example, the cell size is very small, small, medium, or large).
  • the RRC state (for example, idle state (RRC_idle), connected state (RRC_connected), inactive state (RRC_inactive)) of the terminal device moving in the past historical cell, and the time spent in the RRC state;
  • the beam information of the terminal device under the historical cell passed by, for example, the service beam information of the terminal device, or the best beam information of the terminal device.
  • the beam information here may refer to a synchronization signal block (synchronization signal block, SSB) or a channel state information reference signal (channel-state information reference signal, CSI-RS).
  • the following uses the terminal device as the UE as an example to list a possible information element structure of a historical cell.
  • the historical cell information is recorded by the terminal equipment and reported to the current master node MN.
  • steps 910 to 920 are further included before step 810 in FIG. 8.
  • Step 910 The terminal device records the information of the past historical cells.
  • the radio resource control (RRC) state of a terminal device can include idle state (RRC_idle), connected state (RRC_connected), and inactive state (RRC_inactive).
  • RRC_inactive is new radio (new).
  • radio NR
  • a newly introduced radio resource control RRC state also called “RRC inactive state” or “RRC inactive state” or “inactive state”).
  • RRC_inactive is the same as the idle state.
  • the terminal device disconnects the RRC connection from the network, thereby achieving the same power saving effect as the idle state.
  • the terminal device and the access network device save the context of the terminal device. When the terminal device returns to the RRC connected state, it can reuse the previously saved context of the terminal device to quickly restore the connection.
  • the terminal device when it records the information of the historical cells passed by, it can record the information of the cells passed under RRC_idle, or can also record the information of the cells passed under RRC_inactive, or can also record the information of the cells passed under RRC_connected .
  • the cell can be a historical serving cell under RRC_connected or a historical camping cell under RRC_idle or RRC_inactive.
  • the above-mentioned serving cell or camping cell can be a cell under the master node MN, or other cells (such as terminal The device does not establish dual connections, and the terminal device is only located in one cell of a base station, and the RRC state of the terminal device can be connected, inactive, or idle).
  • the terminal device when the cell changes, for example, the terminal device changes from the primary cell of RRC_connected or the cell of RRC_idle or the cell of RRC_inactive to another same system with radio access technology (RAT) or the same Different RATs of the system (for example, between the LTE base station connected to 5GC and the NR base station connected to 5GC) or different system cells, or terminal equipment enters a non-service area (when entering out of service), the terminal equipment is in the saved movement history An entity is added to the information, which is used to record historical cell information. (Optionally, the number of corresponding entities is limited. If the number exceeds the maximum number, the oldest entity will be deleted first).
  • the terminal device can record relevant content in the following ways:
  • the terminal device may carry the CGI in the visited cell id of the entity. Or the physical cell identifier PCI and frequency point of the serving cell are carried in the visited cell ID of the entity. The terminal device can also record the time and speed information of the previous serving cell in the entity.
  • the terminal device can record and report the speed and/or movement status information when passing a cell at a certain moment, or it can also record and report the average speed passing through one or more cells and/or the Or mobile status information in multiple cells.
  • the terminal equipment can determine the movement status information according to the comparison between the number of times of the terminal equipment cell reselection and a certain threshold within a period of time.
  • the medium-speed moving state means that the number of cell reselections of the terminal equipment within a certain period of time is within a certain range (for example, more than or equal to a value A, but lower than or equal to another value B, or more than a value A but not more than one Value B).
  • the high-speed movement state means that the number of cell reselections of the terminal equipment within a period of time exceeds a certain value (for example, exceeds the value B).
  • the normal movement state means that the number of cell reselections of the terminal device in a period of time is lower than a certain value (for example, lower than A, or not exceeding A).
  • the terminal device does not consider continuous cell reselection (for example, after reselecting a cell, and then reselecting it. For example, reselecting from cell 1 to cell 2, and then reselecting to cell) 1. For example, only one cell reselection is considered at this time).
  • the above-mentioned time range and the threshold of the number of times of cell reselection may be sent by the network side to the terminal device through a broadcast message.
  • the above mobile state information may be the mobile state information of the terminal device just before entering the RRC_connected state.
  • the above movement state information may be the movement state information recently determined by the terminal device before entering the RRC_connected state. After the terminal device enters the RRC_connected state, the above movement state information is reported to the network side.
  • the terminal device when the terminal device enters the current RAT from another RAT and is in the RRC_Connect or RRC_idle state in the current RAT, or the terminal device enters the current RAT from a non-service area and is in the RRC_Connect or RRC_idle state in the current RAT , The terminal device adds an entity to the saved movement history, which is used to record historical cell information (the number of corresponding entities is limited, if the number exceeds the maximum number, the oldest entity is deleted first). Record the time spent outside the current RAT in this entity.
  • Step 920 The terminal device sends the recorded historical cell information to the current master node MN.
  • the terminal device When the terminal device re-accesses the network from RRC_inactive or RRC_idle, when the terminal device accesses the network, it can send the recorded historical cell information to the current master node MN.
  • the terminal device may instruct the network side (for example, the master node MN) that the terminal device saves the movement history information.
  • the terminal device may carry an indication information in the RRC connection setup complete (RRC connection setup complete) message or the RRC connection resume complete (RRC connection resume complet) message, indicating that the terminal device has information about the historical cells that it has passed through. information.
  • the master node MN can request the terminal equipment to report the recorded historical cell information.
  • the master node MN can carry an indication information in a UE information request (UE information request) message, which is used to request the terminal equipment to send the recorded history Information about the cell.
  • the terminal device reports the movement history information after receiving the request.
  • a UE information response (UE information response) message may carry historical cell information recorded by the terminal device.
  • the source cell or source base station will send the historical cell information reported by the terminal device to the target cell or target base station (for example, the source cell or source base station can be The handover request message sent to the target cell or the target base station carries the historical cell information reported by the terminal device).
  • the current master node serves as the target base station. At this time, the current master node can receive historical cell information from the source base station.
  • the historical cell information is recorded by the current master node MN or/and other nodes.
  • step 1010 is further included before step 810.
  • Step 1010 The current master node MN or/and other nodes record information about historical cells passed by the terminal device.
  • the current master node MN or/and other nodes can record the information of historical cells that the terminal device has passed under the node that RRC_connected has passed.
  • the current master node MN or/and other nodes can record the information of the historical cell that the terminal device passes through is the same as the information of the historical cell recorded by the terminal device itself. For details, please refer to the description of the historical cell information recorded by the terminal device itself. I won't repeat them here. Other nodes will send their recorded information of historical cells passed by the terminal equipment to the current master node MN.
  • the source cell or the source base station when switching between different cells or base stations, will send the historical cell information reported by the terminal device to the target cell or the target base station (for example, the source cell or the source base station can be sent to the target cell or the target base station).
  • the sent handover request message carries historical cell information reported by the terminal device).
  • the current master node MN or/and other nodes determine the average speed of the terminal device passing through one or more cells and/or the movement status information in the one or more cells.
  • the current master node MN or/and other nodes can report the number of terminal device cell reselections within a certain period of time reported by the terminal device and the time spent in each cell, as well as the coverage of the current master node MN or/and other nodes' corresponding frequency cells.
  • the area size determines the average speed of the terminal device passing through one or more cells and/or the movement status information in the one or more cells.
  • the current master node MN or/and other nodes determine the speed information of the terminal device passing the three cells according to the time of the three cells that the terminal device has passed in history and the coverage area of the three cells.
  • the current master node MN determines the terminal equipment according to the time spent in one or more cells recorded by the master node or/and other nodes, and the coverage area of the current master node MN or/and the corresponding frequency cell of other nodes. The average speed through one or more cells and/or the movement status information in the one or more cells. For example, the current master node MN determines the speed information of the terminal device passing through the three cells according to the time of the three cells passed by the terminal device history and the coverage area of the three cells.
  • step 820 the current secondary node SN prepares for handover according to the information of the historical cell that the terminal device passes through.
  • Step 820 corresponds to step 720.
  • Step 720 For details, please refer to the description in step 720, which will not be repeated here.
  • the terminal device may also directly send the recorded information of the aforementioned historical cell to the current secondary node SN.
  • the method includes steps 1110-1130, and steps 1110-1130 are described in detail below.
  • Step 1110 The terminal device records the information of the past historical cells.
  • step 910 in FIG. 9 please refer to the description in step 910 for details, which will not be repeated here.
  • Step 1120 The terminal device sends the information of the past historical cells to the current secondary node SN.
  • the terminal device may directly send the information of the past historical cells to the current secondary node SN, for example, by signaling radio bearer 3 (SRB3).
  • the terminal device may also send the information of the past historical cells to the current master node MN first, and then the current master node MN to the current secondary node SN.
  • the terminal equipment carries the historical cell information in the RRC message sent to the current master node MN, and then the current master node sends it to the secondary node.
  • the terminal device nests an RRC message for the current secondary node in the RRC message for the current primary node MN, and carries the historical cell information in the RRC message to the current secondary node, and then the current primary node sends it to the current secondary node.
  • the RRC message of the secondary node is sent to the current secondary node.
  • Step 1130 The current secondary node SN prepares for handover according to the information of the historical cell passed by the terminal device.
  • step 720 in FIG. 7 please refer to the description in step 720 for details, which will not be repeated here.
  • the secondary node SN prepares for handover according to the information of the terminal device passing through the cell under the primary node MN.
  • the number of cells that the terminal device moves under the primary node MN may be different from the number of cells that the terminal device moves under the secondary node SN
  • the secondary node SN may not be particularly accurate as a reference for handover preparation according to the time that the terminal device stays in the cell under the primary node MN and/or the speed information of moving in the cell under the primary node MN.
  • Figures 12-13 please refer to Figures 12-13.
  • the number of cells that the terminal device moves under the primary node MN is 2, and the number of cells that the terminal device moves under the secondary node SN is 6, and the secondary node If the SN prepares for the handover of the secondary node SN according to the time that the terminal device stays in the 2 cells under the master node MN and/or the speed information of moving in the cell under the master node MN, the result is not accurate.
  • the cell of the secondary node SN has changed multiple, but the cell of the primary node MN has not changed.
  • the secondary node SN may perform handover preparations based on the historical information of the terminal device moving in the cell under the secondary node SN.
  • the terminal device may record information about historical cells under the primary node MN and information about historical cells under the secondary node SN that have passed under RRC_connected, and send the recorded historical cell information to the primary node.
  • the node MN is sent by the primary node MN to the secondary node SN.
  • FIG. 14 is a schematic flowchart of another method for recording historical information provided by an embodiment of the present application. As shown in the figure, the method includes steps 1410-1440, and steps 1410-1440 will be described in detail below.
  • Step 1410 The terminal device records the information of the historical cells that the terminal device has passed through.
  • the historical cells include cells under one or more secondary nodes SN.
  • the terminal device can record one or more of the following:
  • the terminal equipment records the information of historical cells passed under RRC_idle;
  • the terminal equipment records the information of historical cells passed under RRC_inactive
  • the terminal device records the information of the historical cells under the master node MN and the information of the historical cells under the secondary node SN that it passes under RRC_connected.
  • the terminal device when the terminal device records the information of historical cells under the primary node MN and the information of historical cells under the secondary node SN that have passed under RRC_connected, it may also record the primary and secondary cells under the secondary node SN. It is associated with the primary cell under the primary node MN. That is, when the terminal device switches between multiple historical cells under the secondary node SN, it is always connected to the primary cell of the same primary node MN. For example, when the primary cell of the primary node MN changes, the terminal device can re-record the historical cell that the terminal device moves under the secondary node SN under the new primary cell.
  • the terminal device can re-record the historical cell that the terminal device has moved under the secondary node SN under the new primary cell. At this time, the terminal device will add a previous cell to the stored movement history information. The entity of the primary cell. If the primary and secondary cell changes, the terminal device will add an entity of the previous primary and secondary cell to the stored movement history information.
  • the terminal equipment includes a record of the previous primary and secondary cell information in the movement history corresponding to the primary cell.
  • dual connectivity may mean that two different nodes provide data transmission services for one terminal device at the same time, that is, in a dual connectivity scenario, one terminal device maintains an RRC connection with two different nodes at the same time.
  • the group (group) of the cell (cell) where the terminal device first initiates a random access channel (RACH) is the master cell group (MCG).
  • MCG master cell group
  • PCell primary cell
  • SCG secondary cell group
  • the number of corresponding primary and secondary cells is limited. If the number exceeds the maximum number, the oldest primary and secondary cells are deleted first.
  • the CGI is carried in the passed primary and secondary cell identity (visited PSCell ID). Or the visited PSCell ID carries the physical cell identifier PCI and frequency of the cell.
  • the terminal device may also record in the entity the time that the terminal device stayed in the previous primary and secondary cell.
  • the terminal device when the PScell is changed or released or when the secondary node is released, if the current primary cell has not changed and the entity of the latest movement history does not record the current primary cell, the terminal device is in the entity of the saved movement history Add a record of the current primary cell information.
  • the primary and secondary cells are changed or released or the secondary node is released, if the entity records the information of the current primary cell, the information of the primary and secondary cells before the primary and secondary cell changes needs to be added to the information of the current primary cell. If the current entity does not record the current primary cell information, it is necessary to add the current primary cell information to the entity, and then add the primary and secondary cell information associated with the primary and secondary cell before the change in the current primary cell information.
  • the number of corresponding primary cells is limited. If the number exceeds the maximum number, the oldest primary cell will be deleted first.
  • the CGI is carried in the visited Cell id of the entity.
  • the physical cell identifier PCI and frequency point of the cell are carried in the visited Cell id of the entity.
  • the CGI is carried in the visited PSCell id.
  • the physical cell identifier PCI and frequency point of the cell are carried in the visited PSCell id. And record the time that the terminal device stayed in the previous primary and secondary cell.
  • a cell structure of historical cell information associated between the primary and secondary cells under the secondary node SN and the primary cell under the primary node MN is listed.
  • the latest visited cell information in the current visited cell information list is the information of the current primary cell (that is, the latest visited cell information) Where the visited cell ID is the identification of the current primary cell), the information of the primary and secondary cells before the primary and secondary cell changes are added to the visited PScell Information list under the visited cell information corresponding to the current primary cell; if the current visited cell information list is the latest The visited cell information is not the current primary cell information.
  • the visited cell information list add the current primary cell information (for example, add a visited cell information, which includes the current primary cell information), and then add the associated primary cell information to the current primary cell information.
  • the information of the primary and secondary cells before the secondary cell is changed (for example, the visited PScell information before the primary and secondary cell changes are added to the visited PScell Information list under the visited cell information of the current primary cell).
  • the time span of the primary and secondary cells corresponding to the secondary node SN associated with the new primary node MN Need to restart recording. That is, the time spent of the primary and secondary cell corresponding to the secondary node SN refers to the time spent of the primary and secondary cell under a certain primary cell under the corresponding primary node MN.
  • the terminal device adds the information of the previous primary cell to the visited cell information list, and then adds the information of the current primary and secondary cell to the visited PScell information list of the previous primary cell information. information.
  • the specific content of the information of the primary cell and the information of the primary and secondary cell is the same as above, where the time spent of the primary and secondary cell refers to the time spent of the primary and secondary cell under the corresponding primary cell under the corresponding primary node MN.
  • the indication information that the secondary node SN is released needs to be recorded, and the indication information may be used to indicate that the terminal device does not continuously configure the primary and secondary cell PSCell.
  • the indication information may be carried in the visited cell information, or may also be carried in the visited PSCell information.
  • the cell structure of historical cell information in the above two different situations is listed below.
  • the indication information can be carried in the visited cell information, and the cell structure of the historical cell information is as follows.
  • the terminal device receives a message to release the dual connection established by the primary cell and the primary secondary cell for the terminal device. It can be MR-DC SCG release instruction.
  • the indication information can be carried in visited PScell information, and the cell structure of historical cell information is as follows.
  • the last visited PSCell information in the visited PSCell information list is released. After the last visited PSCell information is released, add the current primary cell information in the visited cell information list (for example, add a visited cell information, which includes the current primary cell information), and then add the current primary cell information to the current primary cell information.
  • the information of the secondary cell for example, the visited PScell information before the primary and secondary cell changes are added to the visited PScell Information list under the visited cell information of the current primary cell).
  • the terminal device separately records the historical cell information of the primary cell of the primary node and the historical cell information of the primary and secondary cells of the secondary node.
  • the historical cell information of the primary cell and the historical cell information of the primary cell of the secondary node are as follows, and the basic meaning is the same as the above description.
  • the terminal device does not need to record the association relationship between the primary cell of the primary node and the primary and secondary cells of the secondary node.
  • the terminal device records the previous primary cell information in the visited cell information list.
  • the terminal device When the primary and secondary cells of the secondary node of the terminal device are changed or released or the secondary node is released, the terminal device records the information of the primary and secondary cells of the previous secondary node in the visited PScell information list.
  • the information of the primary and secondary cell of the secondary node includes a cell identifier, the time spent in the primary and secondary cell, the start time of entering the primary and secondary cell, and at least one of information indicating the release of the cell under the secondary node.
  • the information of the primary and secondary cell of the secondary node may also include the length of time since the last release of the secondary node (for example, the terminal device may be When the previous primary and secondary cell information is recorded when the secondary cell is changed, the length of time since the last release of the secondary node is recorded.
  • the terminal device may be When the previous primary and secondary cell information is recorded when the secondary cell is changed, the length of time since the last release of the secondary node is recorded.
  • the following takes the terminal device as the UE as an example to list a cell structure of historical cell information.
  • the terminal device may send the information of the historical cell passed by the terminal device to the current master node MN, and forward it to the current secondary node SN through the current master node MN.
  • the terminal device may send the information of the historical cell passed by the terminal device to the current master node MN, and forward it to the current secondary node SN through the current master node MN.
  • Step 1420 The terminal device sends the information of the historical cell passed by the terminal device to the current master node MN.
  • the terminal device can send the recorded information of one or more of the following historical cells to the current master node MN:
  • the terminal equipment records the information of historical cells passed under RRC_idle;
  • the terminal equipment records the information of historical cells passed under RRC_inactive
  • the terminal device records the information of the historical cells under the master node MN and the information of the historical cells under the secondary node SN that it passes under RRC_connected.
  • the current master node MN and the master node MN through which the terminal device records under RRC_connected may be one node, or may also be different nodes, which is not specifically limited in this embodiment of the application.
  • step 1420 in FIG. 14 is optional. That is, optionally, a possible implementation manner is that the terminal device sends the recorded information of the historical cell that the terminal device passes through to the current master node MN. Optionally, another possible implementation manner is that the terminal device sends the recorded information of the historical cell that the terminal device has passed to the current primary node MN and the current secondary node SN, respectively.
  • FIG. 15 will combine FIG. 15 to compare another possible The implementation method is described in detail, and will not be repeated here.
  • Step 1430 The current master node MN sends the information of historical cells passed by the terminal device to the current secondary node SN.
  • the master node MN After the master node MN receives the information of the historical cells under the master node MN and the information of the historical cells under the secondary node SN reported by the terminal equipment, it can move the terminal equipment under one or more secondary nodes SN. The information is sent to the current secondary node SN. Or, it is also possible to send the information of the historical cell that the terminal device moves under the primary node MN and the information of the historical cell that moves under one or more secondary nodes SN to the current secondary node SN.
  • one or more secondary nodes SN and the current secondary node SN may be one node, or may also be different nodes, which are not specifically limited in the embodiment of the present application.
  • the terminal device may send the information of the historical cell directly passed by the terminal device to the current secondary node SN. For details, see the description in step 1435.
  • Step 1435 The terminal device sends the information of the historical cell passed by the terminal device to the current secondary node SN.
  • the terminal device may directly send the information of the past historical cells to the current secondary node SN, for example, by signaling radio bearer 3 (Signalling Radio Bearer 3, SRB3).
  • the terminal device may also send the information of the past historical cells to the current master node MN first, and then the current master node MN to the current secondary node SN.
  • the terminal equipment carries the historical cell information in the RRC message sent to the current master node MN, and then the current master node sends it to the current secondary node.
  • the terminal device nests an RRC message for the current secondary node in the RRC message for the current primary node MN, and carries the historical cell information in the RRC message to the current secondary node, and then the current primary node sends it to the current secondary node.
  • the RRC message of the secondary node is sent to the current secondary node.
  • the foregoing two possible implementation manners may exist at the same time, or there may also be only one of the implementation manners, which is not specifically limited in this application.
  • another possible implementation manner is that the terminal device sends the recorded information of the historical cell that the terminal device has passed to the current primary node MN and the current secondary node SN, respectively. The possible implementations are described in detail, and will not be repeated here.
  • Step 1440 It should be understood that the secondary node SN prepares for handover according to the information of the historical cell passed by the terminal device.
  • the secondary node SN may perform handover preparations according to the information of the historical cells that the terminal device passes under the secondary node SN.
  • handover preparation please refer to the description in step 720, which will not be repeated here.
  • the information of the historical cells passed by the terminal equipment under the secondary node SN can better reflect the mobile cell or number of the secondary node SN, and the secondary node SN is based on the information of the historical cells passed by the terminal equipment under the secondary node SN Preparing for handover, for example, when sending measurement configuration, sending measurement configuration according to the information of the historical cell that the terminal device passed under the secondary node SN will make the measurement more accurate.
  • the method shown in FIG. 14 may further include step 1450, which will be described in detail below.
  • Step 1450 The current master node MN sends the information of the historical cells passed by the terminal device to the core network or the operation management and maintenance (OAM) network element.
  • OAM operation management and maintenance
  • OAM network elements may also be referred to as network management.
  • the current master node MN can notify the core network or OAM network element of the historical cell information that the terminal device has passed through, and then the terminal device returns from RRC_connected to RRC_idle, and then back to RRC_connected, the core network or OAM The network element will send the information of the historical cell passed by the terminal device to the current master node MN, so that the current master node MN can perform handover according to the information of the historical cell passed by the terminal device.
  • the terminal device records the historical cell information under the primary node MN and the historical cell information under the secondary node SN, and can directly notify the current secondary node SN of the historical cell information Node SN.
  • the terminal device records the historical cell information under the primary node MN and the historical cell information under the secondary node SN, and can directly notify the current secondary node SN of the historical cell information Node SN.
  • FIG. 15 is a schematic flowchart of another method for recording historical information provided by an embodiment of the present application. As shown in the figure, the method includes steps 1510-1540, and steps 1510-1540 are respectively described in detail below.
  • Step 1510 The terminal device records the information of the historical cell passed by the terminal device, and the historical cell includes one or more secondary nodes SN.
  • step 1410 It corresponds to step 1410.
  • step 1410 For details, please refer to the description in step 1410, which will not be repeated here.
  • the method shown in FIG. 15 may further include step 1520.
  • Step 1520 The terminal device sends the recorded historical cell information to the current master node MN.
  • the terminal device may perform signaling transmission between the first signaling radio bearer (signalling radio bearer, SRB) and the master node MN. For example, the terminal device sends the recorded historical cell information to the current master node through the first SRB. Node MN.
  • the historical cell information may include the information of the camping cells passed by the RRC_idle/RRC_inactive and the information of the primary cells of the primary nodes passed in the RRC_connected state, and may further include the information of the primary and secondary cells of the secondary nodes passed in the RRC_Connected state.
  • the information of the historical cell may be the visited cell information list in step 1410, or the visited cell information and the visited PS cell information. .
  • the first SRB can be SRB1 or SRB2.
  • the network can configure SRB2, and SRB2 is used to send non-access stratum (NAS) messages.
  • a dedicated control channel (dedlicated control channel, DCCH) logical channel is used.
  • the SRB1 is used to send a radio resource control (radio resource control, RRC) message. It should be noted that the RRC message may include a NAS message.
  • RRC radio resource control
  • the priority of SRB2 is lower than the priority of SRB1.
  • Step 1530 The terminal device sends the historical cell information to the current secondary node SN.
  • the terminal device may perform signaling transmission between the second SRB and the secondary node SN. For example, the terminal device sends the recorded historical cell information of the secondary node SN passing under RRC_connected to the current secondary node through the second SRB. Node SN.
  • the second SRB may be SRB3, which is used to send a specific RRC message and uses a DCCH logical channel.
  • the terminal device may first send the information of the past historical cells to the current master node MN, and the master node MN then sends it to the current secondary node SN.
  • the terminal device nests an RRC message for the current secondary node in the RRC message to the current primary node MN, and carries the historical cell information in the RRC message to the current secondary node, and then the current primary node sends it to the current secondary node.
  • the RRC message of the node is sent to the current secondary node.
  • Step 1540 The current secondary node SN prepares for handover according to the information of the historical cell passed by the terminal device.
  • the current secondary node SN can perform handover preparations according to the information of the historical cells that the terminal device passes under the secondary node SN.
  • handover preparation please refer to the description in step 720, which will not be repeated here.
  • the method shown in FIG. 15 may further include step 1550, which is described in detail below.
  • Step 1550 The current master node MN sends information about historical cells passed by the terminal device to the core network or OAM network element.
  • the current master node MN can notify the core network or OAM network element of the historical cell information that the terminal device has passed. Or the OAM network element will send the information of the historical cell passed by the terminal device to the current master node MN, so that the current master node MN can perform handover according to the information of the historical cell passed by the terminal device.
  • the secondary node SN itself may record the historical cell information of the terminal device moving under the cell of the secondary node SN.
  • the secondary node SN record can better reflect the historical cell information corresponding to the terminal equipment under the secondary node SN. Therefore, it is better for the secondary node SN to prepare for handover according to the information of the historical cell that the terminal device moves under the cell of the secondary node SN, or it does not need to rely on the historical cell information recorded by the primary node MN or the terminal device.
  • FIG. 16 A detailed description will be given below in conjunction with FIG. 16.
  • FIG. 16 is a schematic flowchart of another method for recording historical information provided by an embodiment of the present application. As shown in the figure, the method includes steps 1610-1620, and steps 1610-1620 are respectively described in detail below.
  • Step 1610 The current secondary node SN records information about historical cells that the terminal device moves under the cell of the current secondary node SN.
  • the current secondary node SN itself can record the historical cell information of the terminal device moving in the cell of the current secondary node SN. It should be understood that the specific content of the historical cell information recorded by the current secondary node SN itself may be similar to the content recorded by the current terminal equipment or the primary node MN. For details, please refer to the description of step 710 in FIG. 7 or step 810 in FIG. 8 It is described in and will not be repeated here.
  • the historical cell information recorded by the current secondary node SN itself may also include the time point at which the terminal device entered the primary and secondary cell of the current secondary node SN (such as absolute time, a certain year, a certain day, etc., or relative to this The MN requests to add information such as the time offset of the SN).
  • the following uses the terminal device as the UE as an example to list a possible information element structure of the historical cell recorded by the secondary node SN itself.
  • the foregoing absolute time may be the absolute time for the terminal device to pass through the primary and secondary cells, and the time migration to enter the passed primary and secondary cells is relative to the time offset from the time when the primary node MN requests to increase the secondary node SN.
  • the historical cell information recorded by the current secondary node SN is a record under the primary cell of the same primary node MN.
  • the current secondary node SN re-records under the new primary cell. That is, the historical cell information recorded by the current secondary node SN is dependent on the primary cell of a primary node MN.
  • the dependency relationship can be reflected in the manner of including the visited PScell information list in the visited cell information list in step 1410 in FIG. 14.
  • a visited PScell information list may be re-recorded in the visited cell information list in step 1410 in FIG. 14.
  • Step 1620 The current secondary node SN sends the recorded historical cell information to the current master node MN.
  • the current primary node MN when the primary cell of the current primary node MN changes, the current primary node MN sends indication information to the secondary node SN.
  • the indication information is used to indicate that the primary cell of the current primary node MN has changed.
  • the instruction information reports the recorded historical cell information to the current master node MN. After that, the current secondary node SN will restart to record historical cell information under the new primary cell of the current primary node MN.
  • the secondary node SN can learn that the primary node MN is handed over, and the secondary node SN can actively report the recorded historical cell information to the current Master node MN. After that, the secondary node SN will restart to record historical cell information under the primary cell of the new primary node MN.
  • the current secondary node SN when the current secondary node SN changes (for example, the terminal device switches from one secondary node to another secondary node), the current secondary node SN will actively report the recorded historical cell information to the current primary node MN.
  • the association relationship between the current primary node MN and the current secondary node SN may be recorded by the current primary node MN, or may also be recorded by the current secondary node SN, which is not specifically limited in the embodiment of the present application.
  • the current master node MN sends the current master node MN's primary cell identity to the current secondary node SN, and the current secondary node SN generates the historical cell information recorded by the secondary node SN and the primary node MN according to the primary cell identity of the current primary node MN.
  • the corresponding relationship between the primary cells may be recorded by the current primary node MN, or may also be recorded by the current secondary node SN, which is not specifically limited in the embodiment of the present application.
  • the current master node MN sends the current master node MN's primary cell identity to the current secondary node SN, and the current secondary node SN generates the historical cell information recorded by the secondary node SN and the primary node MN according to the primary cell identity of the current primary
  • the current secondary node SN sends the recorded historical cell information of all terminal equipment moving in the cell of the current secondary node SN to the current primary node MN, and the current primary node MN records the historical cell information and the current primary node MN’s primary Correspondence between the cells.
  • the method shown in FIG. 16 may further include step 1630, which will be described in detail below.
  • Step 1630 The current secondary node SN sends the recorded historical cell information to the target secondary node SN.
  • the current secondary node SN is switched to the target secondary node SN.
  • the current secondary node SN can be used as the source secondary node to send the recorded historical cell information to the target secondary node SN.
  • the source secondary node can directly send the recorded historical cell information to the target secondary node.
  • the target secondary node should continue to collect the information of the historical cell where the terminal device moves.
  • the target secondary node adds historical information that records the movement of the terminal device under the cell under its own coverage on the basis of the record of the source secondary node.
  • the historical cell of the terminal device movement recorded by the source secondary node is (cell 1, cell 2, cell 3), and the target secondary node is recorded on the basis of the source secondary node.
  • the recorded historical cell of the terminal device movement is (cell 1, cell 2, cell 3, cell 4, cell 5, cell 6).
  • the source secondary node can send the recorded historical cell information to the primary node MN, and the primary node MN forwards it to the target secondary node, and the target secondary node adds a record based on the source secondary node record The history information of the terminal equipment moving under the cell under its own coverage.
  • the current primary node can generate a new cell based on the historical cell information of the current secondary node and the historical cell information associated with the previous primary node and secondary node.
  • the historical cell information associated between the primary node and the secondary node For example, the current master node may generate new information about the historical cell associated between the master node and the auxiliary node according to the time information in the historical cell information sent by the current auxiliary node.
  • the current master node may send information about the historical cell associated between the new master node and the secondary node to the target secondary node.
  • the method shown in FIG. 16 may further include step 1640, which will be described in detail below.
  • Step 1640 The current master node MN records the historical cell information of the terminal equipment moving in the cell of the current master node MN.
  • step 710 in FIG. 7 For the specific content of the information of the historical cell, please refer to the description of step 710 in FIG. 7 or the description of step 810 in FIG.
  • step 1630 and step 1640 may or may not exist simultaneously.
  • the primary and secondary cells under the secondary node SN are associated with the primary cells under the primary node MN
  • the primary node MN or the secondary node SN is recording the historical cell of the terminal device
  • the list of primary cells reaches the maximum number
  • the earliest cell message in the list can be deleted according to the sequence of records.
  • the base station can delete the oldest cell message in the primary and secondary cell list under the current primary cell according to the recorded sequence.
  • the method shown in FIG. 16 may further include step 1650, which is described in detail below.
  • Step 1650 The current master node MN sends the information of historical cells passed by the terminal device to the core network or OAM network element.
  • the current master node MN can notify the core network or OAM network element of the historical cell information that the terminal device has passed.
  • the network element will send the information of the historical cell passed by the terminal device to the current master node MN, so that the current master node MN can switch based on the information of the historical cell passed by the terminal device.
  • the current master node MN may also merge the historical cell information of the SN cells under each MN according to the historical cell information saved by the current master node MN and the historical cell information fed back by the current secondary node SN.
  • the core network may perform user congestion-related analysis based on the historical cell information of the terminal device or the core network obtains the historical cell information of the terminal device from other entities such as a network manager.
  • the core network can receive historical cell information of terminal equipment from base stations, or obtain historical cell information from terminal equipment, or obtain historical cell information of terminal equipment from other entities such as OAM.
  • the information of the historical cell includes the information of the historical cell under the primary base station node MN and/or the information of the historical cell under the passed secondary node SN.
  • the core network can perform congestion analysis according to the request.
  • the analysis may be a request for congestion analysis of a certain area, or it may be based on a certain terminal device ID, the area where the terminal device is located at the time of the current request for analysis. Congestion analysis.
  • the request may also perform user-plane congestion analysis, or may also be control-plane congestion analysis, or may also be congestion analysis of data sent through the control plane, or may also analyze all three.
  • a threshold may be indicated. When the congestion level exceeds the threshold, the network data analysis function (NWDAF) will provide corresponding analysis results.
  • NWDAAF network data analysis function
  • the core network can obtain corresponding output analytics (output analytics) according to input data (input data) information.
  • output analytics output analytics
  • input data input data
  • Table 1 for detailed input data information collected by NWDAF
  • Table 2 for congestion analysis output by NWDAF.
  • the performance measurement in Table 1 mainly obtains the measurement result of minimization of drive-test (MDT) or statistics obtained by OAM from OAM.
  • MDT drive-test
  • the basic idea of MDT is that operators use commercial terminals of contracted users to perform measurement reports to partially replace traditional drive test work, and to automatically collect terminal measurement data to detect and optimize problems and failures in the wireless network.
  • Application scenarios of this technology Operators generally do routine network coverage drive tests every month, and call quality drive tests for specific areas in response to user complaints. Drive tests in these scenarios can be replaced by MDT .
  • the measurement types of the existing MDT technology can be divided into the following types:
  • Signal level measurement UE measures the signal level of wireless signals and reports the measurement results to the base station or base station controller;
  • Qos measurement is usually performed by the base station (for example: service flow, service throughput, service delay, etc.), or it can be measured by terminal equipment, such as uplink processing delay Or it can be the joint processing of the base station and the terminal, such as air interface delay measurement (measurement data packets pass the service data adaptation protocol (SDAP) of the base station or packet data convergence protocol (PDCP) Layer to the time the data packet reaches the SDAP/PDCP layer of the terminal device).
  • SDAP service data adaptation protocol
  • PDCP packet data convergence protocol
  • the terminal device records the radio resource control (radio resource control, RRC) connection establishment failure information and reports it to the base station or base station controller.
  • RRC radio resource control
  • FIG. 17 is a schematic flowchart of a method for congestion analysis provided by an embodiment of the present application. As shown in FIG. 17, the method may include steps 1710-1790, and steps 1710-1790 will be described in detail below.
  • Step 1710 The network function (NF) network element sends a message requesting user data congestion analysis on a specific terminal device to the NWDAF.
  • NWDAF network function
  • the message sent by the NF network element to the NWDAF requesting user data congestion analysis on a specific terminal device may carry the ID of the terminal device.
  • the NWDAF may not know the location of a specific terminal device, and the NWDAF may obtain the location of the terminal device according to the historical cell information of the terminal device obtained from the AMF or OAM. For example, according to the time information in the historical cell information (such as the time of entering the historical cell and the time spent in the historical cell), the current position information of the terminal device, such as the cell identity of the corresponding primary cell or primary and secondary cell, is calculated.
  • the NWDAF may not know the location of a specific terminal device, and the NWDAF may obtain the location of the terminal device through steps 1720-1750.
  • Step 1720 NWDAF queries UDM for the ID of the AMF serving the terminal device.
  • the NWDAF may send a request message to the UDM, and the request message is used to query the UDM for the AMF serving the terminal device.
  • Step 1730 UDM feeds back to NWDAF the ID of the AMF serving the terminal device.
  • the UDM After receiving the query message sent by the NWDAF, the UDM can feed back the ID of the AMF serving the terminal device to the NWDAF.
  • Step 1740 NWDAF sends to AMF to query the location of the terminal device.
  • the NWDAF After receiving the ID of the AMF that serves the terminal device fed back by the UDM, the NWDAF can send to the AMF to query the location of the terminal device.
  • Step 1750 AMF feeds back the position of the terminal device to NWDAF.
  • the AMF can send the location of the specific terminal device to the NWDAF after receiving the request information sent by the NWDAF to query the location of a specific terminal device.
  • the AMF can obtain the primary cell of the primary node and the primary and secondary cells of the secondary node that the terminal device is currently possible based on the historical cell information of the terminal device and the ability of the terminal device to have DC.
  • the primary cell and primary and secondary cells of the terminal equipment are sent to NWDAF.
  • Step 1760 The NWDAF requests the OAM for the user data congestion state of the location of the specific terminal device.
  • Step 1770 The OAM feeds back the user data congestion status of the location of the specific terminal device to the NWDAF.
  • steps 1760-1770 can be omitted.
  • Step 1780 NWDAF derives the corresponding request analysis result.
  • Step 1790 NWDAF provides user data congestion analysis results to NF.
  • the core network may also perform an analysis of potential qos changes based on the historical cell information of the terminal device.
  • the core network can receive historical cell information of terminal equipment from base stations, or obtain historical cell information from terminal equipment, or obtain historical cell information of terminal equipment from other entities such as OAM.
  • the information of the historical cell includes the information of the historical cell under the primary base station node MN and/or the information of the historical cell under the passed secondary node SN.
  • the core network is based on the input qos requirements (such as standard 5QI, or non-standard qos parameters), location information (such as the path of interest, or the form of geographic area (such as regional coordinates, or polygonal description of the region)) , And some indicator thresholds that trigger the notification of qos changes (such as uplink average throughput or downlink average throughput, etc.), optionally including the time interval for indicating potential qos changes, and when the corresponding conditions are met, the corresponding qos change notification is triggered ,
  • the notification can indicate the location information corresponding to the qos change and the time information of the qos change, etc.
  • the input data currently used by NWDAF that is, those statistics used for congestion analysis) are shown in Table 3.
  • Table 3 is the data collected for the analysis of potential changes in qos
  • each time period mentioned above refers to the statistical interval corresponding to the OAM statistics defined by the operator, and the analysis output result of the potential change of qos is the corresponding location and time information when the potential change of the corresponding qos occurs.
  • V2X vehicle to everything
  • V2X vehicle to everything
  • V2X can include but is not limited to: vehicle to vehicle (V2V), vehicle to infrastructure (V2I), vehicle to network (V2V) V2N), and vehicle to pedestrian (V2P).
  • V2V vehicle to vehicle
  • V2I vehicle to infrastructure
  • V2V vehicle to network
  • V2P vehicle to pedestrian
  • V2X services can be provided in two ways: namely, a PC5 interface-based way and a Uu interface-based way.
  • the PC5 interface is an interface defined on the basis of a sidelink. Using this interface, communication devices (for example, automobiles) can directly communicate and transmit.
  • the PC5 interface can be used in out of coverage (OOC) and in coverage (in coverage, IC), but only authorized communication devices can use the PC5 interface for transmission.
  • OOC out of coverage
  • IC in coverage
  • V2X direct link transmission supports two resource allocation modes, namely, scheduling mode (may be called: mode3 or mode1) and UE autonomous resource selection mode (may be called: mode4 or mode2):
  • the scheduling mode requires the UE to be in a radio resource control (Radio Resource Control, RRC) connection state.
  • RRC Radio Resource Control
  • the UE first makes a resource request to an access device (for example, an eNB), and then the access device allocates control and data resources on the V2X direct link.
  • the scheduling in the scheduling mode may include semi-persistent scheduling (SPS).
  • the UE in the UE autonomous resource selection mode, the UE itself selects transmission resources and independently adjusts the transmission format of control and data on the V2X direct link.
  • FIG. 18 is a schematic flowchart of a method for analyzing potential changes of qos provided by an embodiment of the present application. As shown in FIG. 18, the method may include steps 1810-1840, and steps 1810-1840 will be described in detail below.
  • Step 1810 The user sends a request to analyze the potential change of qos to NWDAF.
  • Users may provide different sets of parameters to provide different mixed requirements of location information and time information.
  • Step 1820 NWDAF collects relevant data from OAM. For details, please refer to the description in Table 3, which will not be repeated here.
  • Step 1830 NWDAF performs data analysis.
  • NWDAF verifies whether the conditions for informing qos of potential changes are met. NWDAF compares the expected key performance indication (KPI) corresponding to the target fifth-generation quality of service identifier (5G Qos identifier, 5QI) and the threshold provided by the user in any cell in the requested time information to detect Whether to notify qos of potential changes.
  • KPI key performance indication
  • the expected KPI is derived from the statistics obtained from OAM. If the terminal device is a terminal that supports DC, NWDAF can estimate that the terminal device may be in the requested time information based on the primary cell information under the primary node and the primary and secondary cell information under the secondary node in the historical cell information of the terminal device.
  • the desired KPI is obtained by comprehensively considering the data collected by the primary cell and the associated primary and secondary cells obtained in OAM.
  • the information obtained from OAM may also include planned or unplanned endpoint detection and other information that is not within the scope of the 3rd generation partnership project (3GPP).
  • 3GPP 3rd generation partnership project
  • Step 1840 NWDAF feeds back the response or notification for the potential change of qos to the user.
  • NWDAF can provide users with responses or notifications to potential changes in qos.
  • FIG. 19 is a schematic block diagram of a device 1900 for recording historical information according to an embodiment of the present application. It can be understood that the historical information recording device 1900 may be a secondary node, or a component that can be used for a secondary node.
  • the historical information recording device 1900 may include:
  • the obtaining module 1910 is configured to obtain information of historical cells passed by a terminal device, where the information of the historical cell includes the time that the terminal device stays in the historical cell and/or the speed information of moving in the historical cell;
  • the processing module 1920 is configured to prepare for handover according to the historical cell information.
  • the historical information recording device can obtain information about the time the terminal device stays in the historical cell and/or the speed of moving in the historical cell, and can accurately configure some related measurement parameters according to the above information, thereby guiding the secondary base station Trigger the terminal device to prepare for handover.
  • the obtaining module 1910 is specifically configured to: receive the historical cell information from the terminal device or the current master node.
  • the historical cell includes one or more historical primary and secondary cells, and the one or more historical primary and secondary cells include one or more historical secondary nodes and/or primary and secondary cells under the current secondary node.
  • the information of the one or more historical primary and secondary cells is recorded by the terminal device.
  • the historical cell information includes the association relationship between the one or more primary and secondary cells and one primary cell, wherein when the terminal device accesses the one or more primary and secondary cells, all The terminal device accesses the primary cell, and the primary cell is one or more historical primary nodes or primary cells under the current primary node.
  • the historical cell information further includes: indication information used to indicate that the terminal device has received the release information of the first secondary cell group, and the first secondary cell group is the first historical primary A cell group under the historical secondary node corresponding to the secondary cell, where the first historical primary and secondary cell is one of the one or more historical primary and secondary cells.
  • the historical cell information further includes radio resource control RRC state information of the terminal equipment in the historical cell, and the RRC state information includes a connected state or an idle state or an inactive state.
  • the historical cell includes one or more historical primary and secondary cells, and the one or more historical primary and secondary cells include primary and secondary cells under one or more historical secondary nodes.
  • the information of the one or more historical primary and secondary cells is recorded by the one or more historical secondary nodes.
  • the obtaining module 1910 is further configured to: receive information of the one or more historical primary and secondary cells from the current primary node.
  • the one or more historical primary and secondary cells further include primary and secondary cells under the current secondary node.
  • the information of the primary and secondary cells under the current secondary node is recorded by the current secondary node.
  • the secondary node 1900 further includes:
  • the sending module 1930 is configured to send the information of the historical cell to the current master node.
  • the historical cell information further includes RRC state information of the terminal equipment in the historical cell, and the RRC state information includes a connected state.
  • the historical cell information includes the association relationship between the one or more primary and secondary cells and one primary cell, wherein when the terminal device accesses the one or more primary and secondary cells, all The terminal device accesses the primary cell, and the primary cell is one or more historical primary nodes or primary cells under the current primary node.
  • the processing module 1920 is specifically configured to: issue a measurement configuration according to the historical cell information, or determine whether to perform handover.
  • the information of the historical cell further includes beam information of the terminal device in the historical cell.
  • the historical cell information includes one or more of the following:
  • the global cell identity CGI of the historical cell is the global cell identity CGI of the historical cell
  • the frequency of the historical cell is the frequency of the historical cell.
  • FIG. 20 is a schematic block diagram of an apparatus 2000 for recording historical information according to an embodiment of the present application. It is understandable that the apparatus 2000 for recording historical information may be a terminal device or a component that can be used in a terminal device.
  • the historical information recording device 2000 may include:
  • the recording module 2010 is used to record the information of the historical cells passed by the terminal equipment, the information of the historical cells includes the time that the terminal equipment stays in the historical cell and/or the speed information of the moving in the historical cell
  • the historical cell includes one or more historical primary and secondary cells, and the one or more historical primary and secondary cells include one or more historical secondary nodes and/or primary and secondary cells under the current secondary node;
  • the sending module 2020 is configured to send the information of the historical cell to the current secondary node.
  • the historical cell information includes the association relationship between the one or more primary and secondary cells and one primary cell, wherein the terminal device accesses the one or more In the case of primary and secondary cells, the terminal device accesses the primary cell, and the primary cell is one or more historical primary nodes or primary cells under the current primary node.
  • the historical cell information further includes: indication information used to indicate that the terminal device has received the release information of the first secondary cell group, and the first secondary cell group is the first historical primary A cell group under the historical secondary node corresponding to the secondary cell, where the first historical primary and secondary cell is one of the one or more historical primary and secondary cells.
  • the historical cell information further includes radio resource control RRC state information of the terminal equipment in the historical cell, and the RRC state information includes a connected state or an idle state or an inactive state.
  • the information of the historical cell further includes beam information of the terminal device in the historical cell.
  • the historical cell information includes one or more of the following:
  • the global cell identity CGI of the historical cell is the global cell identity CGI of the historical cell
  • the frequency of the historical cell is the frequency of the historical cell.
  • FIG. 21 is a schematic block diagram of an apparatus 2100 for recording historical information according to an embodiment of the present application. It is understandable that the device 2100 for recording historical information may be the master node or a component that can be used for backup by the master node.
  • the historical information recording device 2100 may include:
  • the obtaining module 2110 is configured to obtain information about historical cells passed by a terminal device, where the historical cell information includes the time that the terminal device stays in the historical cell and/or the speed information of moving in the historical cell;
  • the sending module 2120 is configured to send the information of the historical cell to the secondary node.
  • the acquiring module 2110 is specifically configured to: receive the historical cell information from the terminal device.
  • the information of the one or more historical primary and secondary cells is recorded by the terminal device.
  • the historical cell information includes the association relationship between the one or more primary and secondary cells and one primary cell, wherein when the terminal device accesses the one or more primary and secondary cells, all The terminal device accesses the primary cell, and the primary cell is one or more historical primary nodes or primary cells under the current primary node.
  • the historical cell information further includes: indication information used to indicate that the terminal device has received the release information of the first secondary cell group, and the first secondary cell group is the first historical primary A cell group under the historical secondary node corresponding to the secondary cell, where the first historical primary and secondary cell is one of the one or more historical primary and secondary cells.
  • the historical cell information further includes radio resource control RRC state information of the terminal equipment in the historical cell, and the RRC state information includes a connected state or an idle state or an inactive state.
  • the acquiring module 2110 is configured to receive the historical cell information sent by the secondary node.
  • the information of the historical cell further includes beam information of the terminal device in the historical cell.
  • the historical cell information includes one or more of the following:
  • the global cell identity CGI of the historical cell is the global cell identity CGI of the historical cell
  • the frequency of the historical cell is the frequency of the historical cell.
  • FIG. 22 is a schematic block diagram of a secondary node 2200 according to an embodiment of the present application.
  • the auxiliary node 2200 may include: a processor 2201, a transceiver 2202, and a memory 2203.
  • the processor 2201 may be in communication connection with the transceiver 2202.
  • the memory 2203 may be used to store the program code and data of the terminal device 2200. Therefore, the memory 2203 may be a storage unit inside the processor 2201, an external storage unit independent of the processor 2201, or a storage unit inside the processor 2201 and an external storage unit independent of the processor 2201. part.
  • the auxiliary node 2200 may further include a bus 2204.
  • the transceiver 2202 and the memory 2203 can be connected to the processor 2201 through a bus 2204; the bus 2204 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) Bus etc.
  • the bus 2204 can be divided into an address bus, a data bus, a control bus, and so on. For ease of representation, only one thick line is used in FIG. 22, but it does not mean that there is only one bus or one type of bus.
  • the processor 2201 may be, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application-specific integrated circuit (ASIC), and a field programmable gate.
  • Array field programmable gate array, FPGA or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in conjunction with the disclosure of this application.
  • the processor may also be a combination that implements computing functions, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on.
  • the transceiver 2202 may be a circuit including the above-mentioned antenna and a transmitter chain and a receiver chain, and the two may be independent circuits or the same circuit.
  • the transceiver 2202 may correspond to the obtaining module 1910 in FIG. 19 above, and the transceiver 2202 is configured to perform all the steps performed by the obtaining module 1910 in FIG. 19.
  • the processor 2201 may correspond to the processing module 1920 in FIG. 19 above, and the processor 2201 is configured to execute all steps performed by the processing module 1920 in FIG. 19.
  • each module of the auxiliary node 2200 in the embodiment of the present application may refer to the related description in the method embodiment.
  • the modules in the embodiments of the present application may also be referred to as units or circuits, which are not limited in the embodiments of the present application.
  • FIG. 23 is a schematic block diagram of a terminal device 2300 according to an embodiment of the present application.
  • the terminal device 2300 may include: a processor 2301, a transceiver 2302, and a memory 2303.
  • the processor 2301 may be in communication connection with the transceiver 2302.
  • the memory 2303 may be used to store the program code and data of the terminal device 2300. Therefore, the memory 2303 may be a storage unit inside the processor 2301, an external storage unit independent of the processor 2301, or a storage unit inside the processor 2301 and an external storage unit independent of the processor 2301. part.
  • the terminal device 2300 may further include a bus 2304.
  • the transceiver 2302 and the memory 2303 may be connected to the processor 2301 through a bus 2304; the bus 2304 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) Bus etc.
  • the bus 2304 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 used to represent in FIG. 23, but it does not mean that there is only one bus or one type of bus.
  • the processor 2301 may be, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application-specific integrated circuit (ASIC), and a field programmable gate.
  • Array field programmable gate array, FPGA or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in conjunction with the disclosure of this application.
  • the processor may also be a combination that implements computing functions, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on.
  • the transceiver 2302 may be a circuit including the above-mentioned antenna and a transmitter chain and a receiver chain, and the two may be independent circuits or the same circuit.
  • the processor 2301 may correspond to the recording module 2010 in FIG. 20 above, and the processor 2301 is configured to execute all steps performed by the recording module 2010 in FIG. 20.
  • the transceiver 2302 may correspond to the recording module sending module 2020 in FIG. 20 above, and the transceiver 2302 is configured to perform all the steps performed by the sending module 2020 in FIG. 20.
  • each module of the terminal device 2300 in the embodiment of the present application can refer to the related description in the method embodiment.
  • the modules in the embodiments of the present application may also be referred to as units or circuits, which are not limited in the embodiments of the present application.
  • FIG. 24 is a schematic block diagram of a master node 2400 according to an embodiment of the present application.
  • the master node 2400 may include: a processor 2401, a transceiver 2402, and a memory 2403.
  • the processor 2401 may be in communication connection with the transceiver 2402.
  • the memory 243 may be used to store the program code and data of the master node 2400. Therefore, the memory 2403 may be a storage unit inside the processor 2401, or an external storage unit independent of the processor 2401, or may include a storage unit inside the processor 2401 and an external storage unit independent of the processor 2401. part.
  • the master node 2400 may further include a bus 2404.
  • the transceiver 2402 and the memory 2403 can be connected to the processor 2401 via a bus 2404;
  • the bus 2404 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) Bus etc.
  • the bus 2404 can be divided into an address bus, a data bus, a control bus, and so on. For ease of presentation, only one thick line is used in FIG. 24 to indicate, but it does not mean that there is only one bus or one type of bus.
  • the processor 2401 may be, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application-specific integrated circuit (ASIC), and a field programmable gate.
  • Array field programmable gate array, FPGA or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in conjunction with the disclosure of this application.
  • the processor may also be a combination that implements computing functions, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on.
  • the transceiver 2402 may be a circuit including the above-mentioned antenna and a transmitter chain and a receiver chain, and the two may be independent circuits or the same circuit.
  • the transceiver 2402 may correspond to the obtaining module 2110 and the sending module 2120 in FIG. 21 above, and is used to perform all steps performed by the obtaining module 2110 and the sending module 2120 in FIG. 21.
  • each module of the master node 2400 in the embodiment of the present application can refer to the related description in the method embodiment.
  • the modules in the embodiments of the present application may also be referred to as units or circuits, which are not limited in the embodiments of the present application.
  • the embodiments of the present application also provide a computer-readable medium for storing a computer program, and the computer program includes instructions for executing a method in any possible implementation manner of any one of the foregoing aspects.
  • the embodiment of the present application also provides a computer program product, which is applied to a terminal device, the computer program product includes: computer program code, when the computer program code is run by a computer, the computer can execute any of the above-mentioned possibilities The method in the implementation.
  • the embodiment of the present application also provides a chip system, which is applied to a communication device.
  • the chip system includes: at least one processor, at least one memory, and an interface circuit, and the interface circuit is responsible for information interaction between the chip system and the outside world.
  • the at least one memory, the interface circuit, and the at least one processor are interconnected by wires, and instructions are stored in the at least one memory; the instructions are executed by the at least one processor to perform all the above aspects.
  • the embodiments of the present application also provide a computer program product, which is applied to a communication device.
  • the computer program product includes a series of instructions. When the instructions are executed, the method described in the above aspects is performed. Operation of network elements.
  • system and “network” in this article are often used interchangeably in this article.
  • the term “and/or” in this article is only an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone B these three situations.
  • the character "/" in this text generally indicates that the associated objects before and after are in an "or” relationship.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B according to A does not mean that B is determined only according to A, and B can also be determined according to A and/or other information.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital video disc (DVD)), or a semiconductor medium (for example, a solid state disk (SSD)), etc.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, 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 code .

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Abstract

本申请提供了一种历史信息的记录方法。所述方法包括：辅节点获取终端设备经过的历史小区的信息，所述历史小区的信息包括所述终端设备在历史小区中停留的时间和/或在历史小区中移动的速度信息；所述辅节点根据所述历史小区的信息进行切换准备。上述技术方案中辅节点可以根据终端设备经过的历史小区的速度和在历史小区中停留的时间配置一些相关的测量参数，从而指导辅基站触发终端设备进行切换准备。

Description

历史信息的记录方法、装置及计算机可读存储介质
本申请要求于2019年08月15日提交中国专利局、申请号为201910755418.6、申请名称为“历史信息的记录方法、装置及计算机可读存储介质”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，并且更具体地，涉及历史信息的记录方法方法、装置及计算机可读存储介质。
背景技术
在终端设备和一个基站进行通信的过程中，该终端设备会记录经过的小区的信息。该基站在获取到该终端设备经过的小区的信息后，可以根据终端设备经过的小区的信息对该终端设备的移动进行优化，或者还可以在切换的过程中，根据终端设备经过的小区的信息下发测量配置。
在双连接(dual connectivity，DC)的场景中，除了主基站可以触发终端设备进行切换之外，辅基站也可以触发终端设备进行切换。例如，辅基站可以触发终端设备进行多个辅基站之间的切换，或者还可以触发终端设备在该辅基站下的小区之间进行切换。
因此，在DC的场景中如何对终端设备的历史信息进行处理称为当前亟需要解决的问题。
发明内容
本申请提供一种历史信息的记录方法、装置及计算机可读存储介质，辅基站可以根据终端设备经过的历史小区的速度和在历史小区中停留的时间配置一些相关的测量参数，从而指导辅基站触发终端设备进行切换准备。
第一方面，提供了一种历史信息的记录方法，包括：当前辅节点获取终端设备经过的历史小区的信息，所述历史小区的信息包括所述终端设备在所述历史小区中停留的时间和/或在所述历史小区中移动的速度信息；所述当前辅节点根据所述历史小区的信息进行切换准备。
上述技术方案中，辅节点可以获取终端设备在历史小区中停留的时间和/或在历史小区中移动的速度信息，并根据上述信息可以准确的配置一些相关的测量参数，从而指导辅基站触发终端设备进行切换准备。
在一种可能的实现方式中，所述当前辅节点从所述终端设备或当前主节点接收所述历史小区的信息。
在另一种可能的实现方式中，所述历史小区包括一个或者多个历史主辅小区，所述一个或者多个历史主辅小区包括一个或者多个历史辅节点和/或当前辅节点下的主辅小区。
在另一种可能的实现方式中，所述一个或者多个历史主辅小区的信息是所述终端设备记录的。
在另一种可能的实现方式中，所述历史小区的信息包括所述一个或者多个主辅小区与一个主小区之间的关联关系，其中，所述终端设备接入所述一个或者多个主辅小区时，所述终端设备接入所述主小区，所述主小区为一个或者多个历史主节点或者当前主节点下的主小区。
在另一种可能的实现方式中，所述历史小区的信息还包括：指示信息，所述指示信息用于指示所述终端设备接收到第一辅小区组的释放信息，所述第一辅小区组为第一历史主辅小区对应的历史辅节点下的小区组，所述第一历史主辅小区为所述一个或者多个历史主辅小区中的一个。
在另一种可能的实现方式中，所述历史小区的信息还包括所述终端设备在所述历史小区中的无线资源控制RRC状态信息，所述RRC状态信息包括连接态或空闲态或非激活态。
在另一种可能的实现方式中，所述历史小区包括一个或者多个历史主辅小区，所述一个或者多个历史主辅小区包括一个或者多个历史辅节点下的主辅小区。
在另一种可能的实现方式中，所述一个或者多个历史主辅小区的信息是由所述一个或者多个历史辅节点记录的。
在另一种可能的实现方式中，所述方法还包括：所述当前辅节点从当前主节点接收所述一个或者多个历史主辅小区的信息。
在另一种可能的实现方式中，所述一个或者多个历史主辅小区还包括当前辅节点下的主辅小区。
在另一种可能的实现方式中，所述当前辅节点下的主辅小区的信息由所述当前辅节点记录。
在另一种可能的实现方式中，所述方法还包括：所述当前辅节点将所述历史小区的信息发送至当前主节点。
在另一种可能的实现方式中，所述历史小区的信息还包括所述终端设备在所述历史小区中的RRC状态信息，所述RRC状态信息包括连接态。
在另一种可能的实现方式中，所述历史小区的信息包括所述一个或者多个主辅小区与一个主小区之间的关联关系，其中，所述终端设备接入所述一个或者多个主辅小区时，所述终端设备接入所述主小区，所述主小区为一个或者多个历史主节点或者当前主节点下的主小区。
在另一种可能的实现方式中，所述辅节点根据所述历史小区的信息下发测量配置，或者确定是否进行切换。
在另一种可能的实现方式中，所述历史小区的信息还包括所述终端设备在所述历史小区中的波束信息。
在另一种可能的实现方式中，所述历史小区的信息包括以下中的一种或多种：
所述历史小区的全局小区标识CGI；
所述历史小区的物理小区标识PCI；
所述历史小区的频点。
第二方面，提供了一种历史信息的记录方法，包括：终端设备记录所述终端设备经过 的历史小区的信息，所述历史小区的信息包括所述终端设备在所述历史小区中停留的时间和/或在所述历史小区中移动的速度信息，所述历史小区包括一个或者多个历史主辅小区，所述一个或者多个历史主辅小区包括一个或者多个历史辅节点和/或当前辅节点下的主辅小区；所述终端设备将所述历史小区的信息发送至当前辅节点。
在一种可能的实现方式中，所述终端设备将所述历史小区的信息先发送至当前主节点MN，通过主节点MN透传至当前辅节点。
在另一种可能的实现方式中，所述历史小区的信息所述历史小区的信息包括所述一个或者多个主辅小区与一个主小区之间的关联关系，其中，所述终端设备接入所述一个或者多个主辅小区时，所述终端设备接入所述主小区，所述主小区为一个或者多个历史主节点或者当前主节点下的主小区。
在另一种可能的实现方式中，所述历史小区的信息还包括：指示信息，所述指示信息用于指示所述终端设备接收到第一辅小区组的释放信息，所述第一辅小区组为第一历史主辅小区对应的历史辅节点下的小区组，所述第一历史主辅小区为所述一个或者多个历史主辅小区中的一个。
在另一种可能的实现方式中，所述历史小区的信息还包括所述终端设备在所述历史小区中的无线资源控制RRC状态信息，所述RRC状态信息包括连接态或空闲态或非激活态。
在另一种可能的实现方式中，所述历史小区的信息还包括所述终端设备在所述历史小区中的波束信息。
在另一种可能的实现方式中，所述历史小区的信息包括以下中的一种或多种：
所述历史小区的全局小区标识CGI；
所述历史小区的物理小区标识PCI；
所述历史小区的频点。
第三方面，提供了一种历史信息的记录方法，包括：主节点获取终端设备经过的历史小区的信息，所述历史小区的信息包括所述终端设备在所述历史小区中停留的时间和/或在所述历史小区中移动的速度信息；所述主节点将所述历史小区的信息发送至辅节点。
在另一种可能的实现方式中，所述主节点从所述终端设备接收所述历史小区的信息。
在另一种可能的实现方式中，所述一个或者多个历史主辅小区的信息是所述终端设备记录的。
在另一种可能的实现方式中，所述历史小区的信息包括所述一个或者多个主辅小区与一个主小区之间的关联关系，其中，所述终端设备接入所述一个或者多个主辅小区时，所述终端设备接入所述主小区，所述主小区为一个或者多个历史主节点或者当前主节点下的主小区。
在另一种可能的实现方式中，所述历史小区的信息还包括：指示信息，所述指示信息用于指示所述终端设备接收到第一辅小区组的释放信息，所述第一辅小区组为第一历史主辅小区对应的历史辅节点下的小区组，所述第一历史主辅小区为所述一个或者多个历史主辅小区中的一个。
在另一种可能的实现方式中，所述历史小区的信息还包括所述终端设备在所述历史小区中的无线资源控制RRC状态信息，所述RRC状态信息包括连接态或空闲态或非激活态。
在另一种可能的实现方式中，所述方法还包括：所述主节点接收所述辅节点发送的所 述历史小区的信息。
在另一种可能的实现方式中，所述历史小区的信息还包括所述终端设备在所述历史小区中的波束信息。
在另一种可能的实现方式中，所述历史小区的信息包括以下中的一种或多种：
所述历史小区的全局小区标识CGI；
所述历史小区的物理小区标识PCI；
所述历史小区的频点。
第四方面，提供了一种历史信息的记录装置，包括用于实现第一方面的方法的模块，部件或者电路。
可以理解的是，第四方面的历史信息的记录装置可以是辅节点，也可以是可用于辅节点的部件(例如芯片或者电路)。
第五方面，提供了一种历史信息的记录装置，包括用于实现第二方面的方法的模块，部件或者电路。
可以理解的是，第五方面的历史信息的记录装置可以是终端设备，也可以是可用于终端设备的部件(例如芯片或者电路)。
第六方面，提供了一种历史信息的记录装置，包括用于实现第三方面的方法的模块，部件或者电路。
可以理解的是，第六方面的历史信息的记录装置可以是主节点，也可以是可用于主节点的部件(例如芯片或者电路)。
第七方面，提供了一种辅节点，包括：
获取模块，用于获取终端设备经过的历史小区的信息，所述历史小区的信息包括所述终端设备在所述历史小区中停留的时间和/或在所述历史小区中移动的速度信息；
处理模块，用于根据所述历史小区的信息进行切换准备。
上述技术方案中，辅节点可以获取终端设备在历史小区中停留的时间和/或在历史小区中移动的速度信息，并根据上述信息可以准确的配置一些相关的测量参数，从而指导辅基站触发终端设备进行切换准备。
在一种可能的实现方式中，所述获取模块具体用于：从所述终端设备或当前主节点接收所述历史小区的信息。
在另一种可能的实现方式中，所述历史小区包括一个或者多个历史主辅小区，所述一个或者多个历史主辅小区包括一个或者多个历史辅节点和/或当前辅节点下的主辅小区。
在另一种可能的实现方式中，所述一个或者多个历史主辅小区的信息是所述终端设备记录的。
在另一种可能的实现方式中，所述历史小区的信息包括所述一个或者多个主辅小区与一个主小区之间的关联关系，其中，所述终端设备接入所述一个或者多个主辅小区时，所述终端设备接入所述主小区，所述主小区为一个或者多个历史主节点或者当前主节点下的主小区。
在另一种可能的实现方式中，所述历史小区的信息还包括：指示信息，所述指示信息用于指示所述终端设备接收到第一辅小区组的释放信息，所述第一辅小区组为第一历史主辅小区对应的历史辅节点下的小区组，所述第一历史主辅小区为所述一个或者多个历史主 辅小区中的一个区。
在另一种可能的实现方式中，所述历史小区的信息还包括所述终端设备在所述历史小区中的无线资源控制RRC状态信息，所述RRC状态信息包括连接态或空闲态或非激活态。
在另一种可能的实现方式中，所述历史小区包括一个或者多个历史主辅小区，所述一个或者多个历史主辅小区包括一个或者多个历史辅节点下的主辅小区。
在另一种可能的实现方式中，所述一个或者多个历史主辅小区的信息是由所述一个或者多个历史辅节点记录的。
在另一种可能的实现方式中，所述获取模块还用于：从当前主节点接收所述一个或者多个历史主辅小区的信息。
在另一种可能的实现方式中，所述一个或者多个历史主辅小区还包括当前辅节点下的主辅小区。
在另一种可能的实现方式中，所述当前辅节点下的主辅小区的信息由所述当前辅节点记录。
在另一种可能的实现方式中，所述辅节点还包括：
发送模块，用于将所述历史小区的信息发送至当前主节点。
在另一种可能的实现方式中，所述历史小区的信息还包括所述终端设备在所述历史小区中的RRC状态信息，所述RRC状态信息包括连接态。
在另一种可能的实现方式中，所述历史小区的信息包括所述一个或者多个主辅小区与一个主小区之间的关联关系，其中，所述终端设备接入所述一个或者多个主辅小区时，所述终端设备接入所述主小区，所述主小区为一个或者多个历史主节点或者当前主节点下的主小区。
在另一种可能的实现方式中，所述处理模块具体用于：根据所述历史小区的信息下发测量配置，或者确定是否进行切换。
在另一种可能的实现方式中，所述历史小区的信息还包括所述终端设备在所述历史小区中的波束信息。
在另一种可能的实现方式中，所述历史小区的信息包括以下中的一种或多种：
所述历史小区的全局小区标识CGI；
所述历史小区的物理小区标识PCI；
所述历史小区的频点。
第八方面，提供了一种终端设备，包括：
记录模块，用于记录所述终端设备经过的历史小区的信息，所述历史小区的信息包括所述终端设备在所述历史小区中停留的时间和/或在所述历史小区中移动的速度信息，所述历史小区包括一个或者多个历史主辅小区，所述一个或者多个历史主辅小区包括一个或者多个历史辅节点和/或当前辅节点下的主辅小区；
发送模块，用于将所述历史小区的信息发送至当前辅节点。
在一种可能的实现方式中，所述终端设备将所述历史小区的信息先发送至当前主节点MN，通过主节点MN透传至当前辅节点。
在另一种可能的实现方式中，所述历史小区的信息所述历史小区的信息包括所述一个或者多个主辅小区与一个主小区之间的关联关系，其中，所述终端设备接入所述一个或者 多个主辅小区时，所述终端设备接入所述主小区，所述主小区为一个或者多个历史主节点或者当前主节点下的主小区。
在另一种可能的实现方式中，所述历史小区的信息还包括：指示信息，所述指示信息用于指示所述终端设备接收到第一辅小区组的释放信息，所述第一辅小区组为第一历史主辅小区对应的历史辅节点下的小区组，所述第一历史主辅小区为所述一个或者多个历史主辅小区中的一个。
在另一种可能的实现方式中，所述历史小区的信息还包括所述终端设备在所述历史小区中的无线资源控制RRC状态信息，所述RRC状态信息包括连接态或空闲态或非激活态。
在另一种可能的实现方式中，所述历史小区的信息还包括所述终端设备在所述历史小区中的波束信息。
在另一种可能的实现方式中，所述历史小区的信息包括以下中的一种或多种：
所述历史小区的全局小区标识CGI；
所述历史小区的物理小区标识PCI；
所述历史小区的频点。
第九方面，提供了一种主节点，包括：
获取模块，用于获取终端设备经过的历史小区的信息，所述历史小区的信息包括所述终端设备在所述历史小区中停留的时间和/或在所述历史小区中移动的速度信息；
发送模块，用于将所述历史小区的信息发送至辅节点。
在另一种可能的实现方式中，所述获取模块具体用于：从所述终端设备接收所述历史小区的信息。
在另一种可能的实现方式中，所述一个或者多个历史主辅小区的信息是所述终端设备记录的。
在另一种可能的实现方式中，所述历史小区的信息包括所述一个或者多个主辅小区与一个主小区之间的关联关系，其中，所述终端设备接入所述一个或者多个主辅小区时，所述终端设备接入所述主小区，所述主小区为一个或者多个历史主节点或者当前主节点下的主小区。
在另一种可能的实现方式中，所述历史小区的信息还包括：指示信息，所述指示信息用于指示所述终端设备接收到第一辅小区组的释放信息，所述第一辅小区组为第一历史主辅小区对应的历史辅节点下的小区组，所述第一历史主辅小区为所述一个或者多个历史主辅小区中的一个。
在另一种可能的实现方式中，所述历史小区的信息还包括所述终端设备在所述历史小区中的无线资源控制RRC状态信息，所述RRC状态信息包括连接态或空闲态或非激活态。
在另一种可能的实现方式中，所述获取模块用于：接收所述辅节点发送的所述历史小区的信息。
在另一种可能的实现方式中，所述历史小区的信息还包括所述终端设备在所述历史小区中的波束信息。
在另一种可能的实现方式中，所述历史小区的信息包括以下中的一种或多种：
所述历史小区的全局小区标识CGI；
所述历史小区的物理小区标识PCI；
所述历史小区的频点。
第十方面，提供了一种历史信息的记录装置，包括：本申请提供的历史信息的记录装置具有实现上述方法中辅节点行为的功能，其包括用于执行上述方法所描述的步骤或功能相对应的部件(means)。所述步骤或功能可以通过软件实现，或硬件(如电路)实现，或者通过硬件和软件结合来实现。其中，所述历史信息的记录装置可以是芯片等。
在一种可能的设计中，上述历史信息的记录装置包括一个或多个处理器。所述一个或多个处理器被配置为支持所述历史信息的记录装置执行上述方法中辅节点相应的功能。
可选的，所述历史信息的记录装置还可以包括一个或多个存储器，所述存储器用于与处理器耦合，其保存历史信息的记录装置必要的程序指令和/或数据。所述一个或多个存储器可以和处理器集成在一起，也可以与处理器分离设置。本申请并不限定。
该存储器可以是处理器内部的存储单元，也可以是与处理器独立的外部存储单元，还可以是包括处理器内部的存储单元和与处理器独立的外部存储单元的部件。
可选地，该处理器可以是通用处理器，可以通过硬件来实现也可以通过软件来实现。当通过硬件实现时，该处理器可以是逻辑电路、集成电路等；当通过软件来实现时，该处理器可以是一个通用处理器，通过读取存储器中存储的软件代码来实现，该存储器可以集成在处理器中，可以位于该处理器之外，独立存在。
可选的，所述历史信息的记录装置还可以包括一个或多个通信单元，所述通信单元可以是收发器，或收发电路。可选的，所述收发器也可以为输入/输出电路或者接口。
另一个可能的设计中，上述历史信息的记录装置，包括收发器、处理器和存储器。该处理器用于控制收发器或输入/输出电路收发信号，该存储器用于存储计算机程序，该处理器用于运行该存储器中的计算机程序，使得该历史信息的记录装置执行第一方面或第一方面中任一种可能实现方式中辅节点完成的方法。
第十一方面，提供了一种历史信息的记录装置，包括：本申请提供的历史信息的记录装置具有实现上述方法中终端设备行为的功能，其包括用于执行上述方法所描述的步骤或功能相对应的部件(means)。所述步骤或功能可以通过软件实现，或硬件(如电路)实现，或者通过硬件和软件结合来实现。其中，所述历史信息的记录装置可以是芯片等。
在一种可能的设计中，上述历史信息的记录装置包括一个或多个处理器。所述一个或多个处理器被配置为支持所述历史信息的记录装置执行上述方法中终端设备相应的功能。
可选的，所述历史信息的记录装置还可以包括一个或多个存储器，所述存储器用于与处理器耦合，其保存通信装置必要的程序指令和/或数据。所述一个或多个存储器可以和处理器集成在一起，也可以与处理器分离设置。本申请并不限定。
该存储器可以是处理器内部的存储单元，也可以是与处理器独立的外部存储单元，还可以是包括处理器内部的存储单元和与处理器独立的外部存储单元的部件。
可选地，该处理器可以是通用处理器，可以通过硬件来实现也可以通过软件来实现。当通过硬件实现时，该处理器可以是逻辑电路、集成电路等；当通过软件来实现时，该处理器可以是一个通用处理器，通过读取存储器中存储的软件代码来实现，该存储器可以集成在处理器中，可以位于该处理器之外，独立存在。
可选的，所述历史信息的记录装置还可以包括一个或多个通信单元，所述通信单元可以是收发器，或收发电路。可选的，所述收发器也可以为输入/输出电路或者接口。
另一个可能的设计中，上述历史信息的记录装置，包括收发器、处理器和存储器。该处理器用于控制收发器或输入/输出电路收发信号，该存储器用于存储计算机程序，该处理器用于运行该存储器中的计算机程序，使得该历史信息的记录装置执行第二方面或第二方面中任一种可能实现方式中终端设备完成的方法。
第十二方面，提供了一种历史信息的记录装置，包括：本申请提供的历史信息的记录装置具有实现上述方法中主节点行为的功能，其包括用于执行上述方法所描述的步骤或功能相对应的部件(means)。所述步骤或功能可以通过软件实现，或硬件(如电路)实现，或者通过硬件和软件结合来实现。其中，所述历史信息的记录装置可以是芯片等。
在一种可能的设计中，上述历史信息的记录装置包括一个或多个处理器。所述一个或多个处理器被配置为支持所述历史信息的记录装置执行上述方法中主节点相应的功能。
可选的，所述历史信息的记录装置还可以包括一个或多个存储器，所述存储器用于与处理器耦合，其保存历史信息的记录装置必要的程序指令和/或数据。所述一个或多个存储器可以和处理器集成在一起，也可以与处理器分离设置。本申请并不限定。
该存储器可以是处理器内部的存储单元，也可以是与处理器独立的外部存储单元，还可以是包括处理器内部的存储单元和与处理器独立的外部存储单元的部件。
可选地，该处理器可以是通用处理器，可以通过硬件来实现也可以通过软件来实现。当通过硬件实现时，该处理器可以是逻辑电路、集成电路等；当通过软件来实现时，该处理器可以是一个通用处理器，通过读取存储器中存储的软件代码来实现，该存储器可以集成在处理器中，可以位于该处理器之外，独立存在。
可选的，所述历史信息的记录装置还可以包括一个或多个通信单元，所述通信单元可以是收发器，或收发电路。可选的，所述收发器也可以为输入/输出电路或者接口。
另一个可能的设计中，上述历史信息的记录装置，包括收发器、处理器和存储器。该处理器用于控制收发器或输入/输出电路收发信号，该存储器用于存储计算机程序，该处理器用于运行该存储器中的计算机程序，使得该历史信息的记录装置执行第三方面或第三方面中任一种可能实现方式中主节点完成的方法。
第十三方面，提供了一种计算机可读存储介质，包括计算机程序，当该计算机程序在终端设备上运行时，使得该历史信息的记录装置执行如第一方面或第一方面的任意一种实现方式中所述的方法。
第十四方面，提供了一种计算机可读存储介质，包括计算机程序，当该计算机程序在通信装置上运行时，使得该历史信息的记录装置执行第二方面或第二方面任意一种实现方式中所述的方法。
第十五方面，提供了一种计算机可读存储介质，包括计算机程序，当该计算机程序在通信装置上运行时，使得该历史信息的记录装置执行第三方面或第三方面任意一种实现方式中所述的方法。
第十六方面，提供了一种计算机程序产品，当该计算机程序产品在计算机上运行时，使得该计算机执行如第一方面或第一方面任意一种实现方式中所述的方法。
第十七方面，提供了一种计算机程序产品，当该计算机程序产品在计算机上运行时，使得该计算机执行如第二方面或第二方面任意一种实现方式中所述的方法。
第十八方面，提供了一种计算机程序产品，当该计算机程序产品在计算机上运行时， 使得该计算机执行如第三方面或第三方面任意一种实现方式中所述的方法。
附图说明
图1是本申请实施例可应用的通信系统100的场景示意图。
图2是适用于本申请的通信系统200的示意图。
图3是适用于本申请的一种DC架构的示意图。
图4是适用于本申请的另一种DC架构的示意图。
图5是适用于本申请的另一种DC架构的示意图。
图6是适用于本申请的另一种DC架构的示意图。
图7是本申请实施例提供的一种历史信息的记录方法的示意性流程图。
图8是本申请实施例提供的另一种历史信息的记录方法的示意性流程图。
图9是本申请实施例提供的另一种历史信息的记录方法的示意性流程图。
图10是本申请实施例提供的另一种历史信息的记录方法的示意性流程图。
图11是本申请实施例提供的另一种历史信息的记录方法的示意性流程图。
图12是本申请实施例提供的一种可能的MN切换和SN切换的示意图。
图13是本申请实施例提供的另一种可能的MN切换和SN切换的示意图。
图14是本申请实施例提供另一种历史信息的记录方法的示意性流程图。
图15是本申请实施例提供另一种历史信息的记录方法的示意性流程图。
图16是本申请实施例提供另一种历史信息的记录方法的示意性流程图。
图17是本申请实施例提供的一种拥塞分析的方法的示意性流程图。
图18是本申请实施例提供的一种qos潜在改变的分析的方法的示意性流程图。
图19是本申请实施例提供的一种历史信息的记录装置1900的示意性框图。
图20是本申请实施例提供的一种历史信息的记录装置2000的示意性框图。
图21是本申请实施例提供的一种历史信息的记录装置2100的示意性框图。
图22是本申请实施例提供的一种辅节点2200的示意性框图。
图23是本申请实施例提供的一种终端设备2300的示意性框图。
图24是本申请实施例提供的一种主节点2400的示意性框图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
应理解，本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(global system of mobile communication，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(wideband code division multiple access，WCDMA)系统、通用分组无线业务(general packet radio service，GPRS)、长期演进(Long Term Evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、未来的第五代(5th generation，5G)系统或新无线(new radio，NR)等。
本申请实施例中对终端设备的类型不做具体限定，例如可以是用户设备(user equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、无线网络设备、用户代理或用户装置。终端可以包括但不限于移动台(mobile station，MS)、移动电话(mobile telephone)、用户设备(user equipment，UE)、手机(handset)、便携设备(portable equipment)、蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)、物流用的射频识别(radio frequency identification，RFID)终端设备，具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它设备、车载设备、可穿戴设备、物联网、车辆网中的终端设备以及未来5G网络中的终端设备或者未来演进的公共陆地移动网络(public land mobile network，PLMN)网络中的终端设备等。
作为示例而非限定，在本申请实施例中，该终端设备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，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
本申请实施例中对网络设备的类型不做具体限定，可以是用于与终端设备通信的任何设备，该网络设备例如可以是全球移动通讯(global system of mobile communication，GSM)或码分多址(code division multiple access，CDMA)中的基站(base transceiver station，BTS)，也可以是宽带码分多址(wideband code division multiple access，WCDMA)系统中的基站(NodeB，NB)，还可以是长期演进(long term evolution，LTE)系统中的演进型基站(evolutional Node B，eNB或eNodeB)，还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器，或者该网络设备例如可以为中继站、接入点、车载设备、可穿戴设备以及未来5G网络中的网络设备或者未来演进的PLMN网络中的网络设备等。
另外，在本申请实施例中，网络设备为小区提供服务，终端设备通过该小区使用的传输资源(例如，频域资源，或者说，频谱资源)与网络设备进行通信。该小区可以是网络设备(例如基站)对应的小区，小区可以属于宏基站，也可以属于小小区(small cell)对应的基站，这里的小小区可以包括：城市小区(Metro cell)、微小区(Micro cell)、微微小区(Pico cell)、毫微微小区(Femto cell)等，这些小小区具有覆盖范围小和发射功率低的特点，适用于提供高速率的数据传输服务。
本申请实施例提供的方法，可以应用于终端设备或网络设备，该终端设备或网络设备包括硬件层、运行在硬件层之上的操作系统层，以及运行在操作系统层上的应用层。该硬件层包括中央处理器(central processing unit，CPU)、内存管理单元(memory management unit，MMU)和内存(也称为主存)等硬件。该操作系统可以是任意一种或多种通过进程(process)实现业务处理的计算机操作系统，例如，Linux操作系统、Unix操作系统、Android 操作系统、iOS操作系统或windows操作系统等。该应用层包含浏览器、通讯录、文字处理软件、以及即时通信软件等应用。并且，在本申请实施例中，传输信号的方法的执行主体的具体结构，本申请实施例并未特别限定，只要能够通过运行记录有本申请实施例的方法的代码的程序，以根据本申请实施例的的方法进行通信即可，例如，本申请实施例的方法的执行主体可以是终端设备或网络设备，或者，是终端设备或网络设备中能够调用程序并执行程序的功能模块。
此外，本申请实施例的各个方面或特征可以实现成方法、装置或使用标准编程和/或工程技术的制品。本申请中使用的术语“制品”涵盖可从任何计算机可读器件、载体或介质访问的计算机程序。例如，计算机可读介质可以包括，但不限于：磁存储器件(例如，硬盘、软盘或磁带等)，光盘(例如，压缩盘(compact disc，CD)、数字通用盘(digital versatile disc，DVD)等)，智能卡和闪存器件(例如，可擦写可编程只读存储器(erasable programmable read-only memory，EPROM)、卡、棒或钥匙驱动器等)。另外，本文描述的各种存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读介质。术语“机器可读介质”可包括但不限于，无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
图1是本申请实施例可应用的通信系统100的场景示意图。如图1所示，该通信系统100包括网络设备102，网络设备102可包括多个天线组。每个天线组可以包括多个天线，例如，一个天线组可包括天线104和106，另一个天线组可包括天线106和110，附加组可包括天线112和114。图1中每个天线组示出了2个天线，然而对于每个组可使用更多或更少的天线。网络设备102可附加地包括发射机链和接收机链，本领域普通技术人员可以理解，它们均可包括与信号发送和接收相关的多个部件(例如处理器、调制器、复用器、解调器、解复用器或天线等)。
网络设备102可以与多个终端设备(例如终端设备116和终端设备122)通信。然而，可以理解，网络设备102可以与类似于终端设备116或122的任意数目的终端设备通信。终端设备116和122例如可以是蜂窝电话、智能电话、便携式电脑、手持通信设备、手持计算设备、卫星无线电装置、全球定位系统、PDA和/或用于在无线通信系统100上通信的任意其它适合设备。
如图1所示，终端设备116与天线112和114通信，其中天线112和114通过前向链路116向终端设备116发送信息，并通过反向链路120从终端设备116接收信息。此外，终端设备122与天线104和106通信，其中天线104和106通过前向链路124向终端设备122发送信息，并通过反向链路126从终端设备122接收信息。
例如，在频分双工(frequency division duplex，FDD)系统中，例如，前向链路116可利用与反向链路120所使用的不同频带，前向链路124可利用与反向链路126所使用的不同频带。
再例如，在时分双工(time division duplex，TDD)系统和全双工(full duplex)系统中，前向链路116和反向链路120可使用共同频带，前向链路124和反向链路126可使用共同频带。
被设计用于通信的每组天线和/或区域称为网络设备102的扇区。例如，可将天线组设计为与网络设备102覆盖区域的扇区中的终端设备通信。在网络设备102通过前向链路116和124分别与终端设备116和122进行通信的过程中，网络设备102的发射天线可利 用波束成形来改善前向链路116和124的信噪比。此外，与网络设备通过单个天线向它所有的终端设备发送信号的方式相比，在网络设备102利用波束成形向相关覆盖区域中随机分散的终端设备116和122发送信号时，相邻小区中的移动设备会受到较少的干扰。
在给定时间，网络设备102、终端设备116或终端设备122可以是无线通信发送装置和/或无线通信接收装置。当发送数据时，无线通信发送装置可对数据进行编码以用于传输。具体地，无线通信发送装置可获取(例如生成、从其它通信装置接收、或在存储器中保存等)要通过信道发送至无线通信接收装置的一定数目的数据比特。这种数据比特可包含在数据的传输块(或多个传输块)中，传输块可被分段以产生多个码块。
此外，该通信系统100可以是公共陆地移动网络PLMN网络或者设备对设备(device to device，D2D)网络或者机器对机器(machine to machine，M2M)网络或者其他网络，图1仅为便于理解而示例的简化示意图，网络中还可以包括其他网络设备，图1中未予以画出。
图2是适用于本申请的通信系统200的示意图。如图2所示，该通信系统200可以包括至少两个网络设备，例如网络设备210和网络设备220，该通信系统200还可以包括至少一个终端设备，例如终端设备230。此外，通信系统200还可以包括至少一个核心网设备，例如核心网设备240。应理解，图2只是示意图，该通信系统中还可以包括其它网络设备。此外，本申请的实施例对该移动通信系统中包括的网络设备和终端设备的数量不做限定。
应理解，网络设备(例如，图2所示的网络设备210和网络设备220)又可以称为无线接入网(radio access network，RAN)设备，是一种将终端设备接入到无线网络的设备。该网络设备可以是LTE中的演进型基站eNB或eNodeB，或者可以是中继站或接入点，或者还可以是5G网络中的基站(ng-eNB或者gNB)，例如发送和接收点(transmission and reception point，TRP)、控制器，本申请在此不做具体限定。
在图2中，终端设备230可以通过空中接口连接网络设备210和网络设备220，网络设备210和网络设备220之间可以通过有线或者无线的方式连接，网络设备210和网络设备220可以通过有线或者无线的方式连接至核心网设备240。核心网设备240可以是4G核心网设备，也可以是5G核心网设备。网络设备210可以是LTE基站，也可以是NR基站，网络设备220可以是LTE基站，也可以是NR基站。终端设备230可以通过采用双连接(dual connectivity，DC)技术，与网络设备210和网络设备220进行通信。
应理解，DC技术即支持两个不同的网络设备(例如，网络设备210和网络设备220)同时为一个终端设备230提供数据传输服务。其中，一个网络设备可以称为主基站或主节点(master node，MN)，另外一个网络设备称为辅基站或辅节点(secondary node，SN)。应理解，主基站和辅基站可能是属于同一制式的基站，或者还可能是不同机制的基站。例如，主基站是NR制式的主基站(master gNB，MgNB)，辅基站是NR制式的辅基站(secondary gNB，SgNB)。又如，主基站可以是LTE制式的主基站(master eNB,MeNB)，辅基站可以是LTE制式的辅基站(secondary eNB,SeNB)。又如，主基站是NR制式的主基站MgNB，辅基站是LTE制式的辅基站SeNB。又如，主基站LTE制式的主基站MeNB，辅基站是NR制式的辅基站SgNB。因此，DC会存在多种组合，下面分别结合图3-图6对几种可能的DC组合进行举例描述。
(1)核心网设备240为分组核心网(evolved packet core，EPC)，LTE基站做MN，NR基站做SN，也可以称为EN-DC(E-UTRA NR DC)。参见图3，此时LTE基站和NR基站之间可以通过X2接口连接，至少有控制面连接，可以还有用户面连接。LTE基站和EPC之间可以通过S1接口连接，至少有控制面连接，可以还有用户面连接。NR基站和EPC之间可以通过S1-U接口连接，即只可以有用户面连接。此时LTE基站可以通过至少一个LTE小区为终端设备230提供空口资源，此时所述至少一个LTE小区称为主小区组(master cell group，MCG)。相应的，NR基站也可以通过至少一个NR小区为终端设备230提供空口资源，此时所述至少一个NR小区称为辅小区组(secondary cell group，SCG)。
(2)核心网设备240为5G核心网(5G core，5GC)，LTE基站做MN，NR基站做SN，也可以称为NGEN-DC(NG-RAN E-UTRA-NR dual connectivity)。参见图4，此时LTE基站和NR基站之间可以通过Xn接口连接，至少有控制面连接，可以还有用户面连接。LTE基站和5GC之间可以通过NG接口连接，至少有控制面连接，可以还有用户面连接。NR基站和5GC之间可以通过NG-U接口连接，即只可以有用户面连接。此时LTE基站可以通过至少一个LTE小区为终端设备230提供空口资源，此时所述至少一个LTE小区称为MCG。相应的，NR基站也可以通过至少一个NR小区为终端设备230提供空口资源，此时所述至少一个NR小区称为SCG。
(3)核心网设备240为5GC时，NR基站做MN，LTE基站做SN，也可以称为NE-DC(NR-E-UTRA dual connectivity)。参见图5，此时NR基站和LTE基站之间可以通过Xn接口连接，至少有控制面连接，可以还有用户面连接。NR基站和5GC之间可以通过NG接口连接，至少有控制面连接，可以还有用户面连接。LTE基站和5GC之间存在NG-U接口，即只可以有用户面连接。此时NR基站可以通过至少一个NR小区为终端设备230提供空口资源，此时所述至少一个NR小区称为MCG。相应的，LTE基站也可以通过至少一个LTE小区为终端设备230提供空口资源，此时所述至少一个LTE小区称为SCG。
应理解，NG eNB是指能够连接5GC的LTE eNB。NG LTE也可以称为eLTE，本申请实施例对此不做具体限定。
(4)核心网设备240为5GC时，MN和SN都是NR基站，也可以称为NR-NR DC。参见图6，主基站和辅基站均为NR的基站，NR主基站和NR辅基站之间可以通过Xn接口连接，至少有控制面连接，可以还有用户面连接。NR主基站和5GC之间存在NG接口，至少有控制面连接，可以还有用户面连接。NR辅基站和5GC之间存在NG-U接口，即只可以有用户面连接。此时NR主基站可以通过至少一个NR小区为终端设备230提供空口资源，此时所述至少一个NR小区称为MCG。相应的，NR辅基站也可以通过至少一个NR小区为终端设备230提供空口资源，此时所述至少一个NR小区称为SCG。
需要说明的是，上述MCG由一个主小区和可选的一个或多个辅小区组成，一个SCG可以由一个主辅小区和可选的一个或多个辅小区组成。
应理解，图3至图6中，均以LTE基站为eNB，NR基站为gNB为例进行说明，但这并不应对本申请构成任何限定。还应理解，上述几种DC组合只是作为示例进行描述，而不应该将本申请实施例限定在上述几种DC组合。
还需要说明的是，在如图1和图2所示的网络架构图中，所述终端设备的功能可以通过终端设备内部的硬件部件来实现，所述硬件部件可以为所述终端设备内部的处理器和/ 或可编程的芯片。可选的，该芯片可以通过专用集成电路(application-specific integrated circuit，ASIC)实现，或可编程逻辑器件(programmable logic device，PLD)实现。上述PLD可以是复杂程序逻辑器件(complex programmable logical device，CPLD)，现场可编程门阵列(field-programmable gate array，FPGA)，通用阵列逻辑(generic array logic，GAL)，片上系统(system on a chip，SOC)中的任一项或其任意组合。
还应理解，本申请实施例中“多个”是指两个或两个以上，鉴于此，本申请实施例中也可以将“多个”理解为“至少两个”。“至少一个”，可理解为一个或多个，例如理解为一个、两个或更多个。例如，包括至少一个，是指包括一个、两个或更多个，而且不限制包括的是哪几个，例如，包括A、B和C中的至少一个，那么包括的可以是A、B、C、A和B、A和C、B和C、或A和B和C。“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。另外，字符“/”，如无特殊说明，一般表示前后关联对象是一种“或”的关系。本申请实施例中的术语“系统”和“网络”可被互换使用。除非有相反的说明，本申请实施例提及“第一”、“第二”等序数词用于对多个对象进行区分，不用于限定多个对象的顺序、时序、优先级或者重要程度。
在终端设备和一个基站进行通信的过程中，该终端设备会记录经过的小区的信息。该基站在获取到该终端设备经过的小区的信息后，可以根据终端设备经过的小区的信息对该终端设备的移动进行优化，或者还可以在切换的过程中，根据终端设备经过的小区的信息下发测量配置。
在DC的场景中，除了主基站可以触发终端设备进行切换之外，辅基站也可以触发终端设备进行切换。例如，辅基站可以触发终端设备进行多个辅基站之间的切换，或者还可以触发终端设备在该辅基站下的小区之间进行切换。
本申请实施例提供的历史信息的记录方法，辅基站可以根据终端设备经过的历史小区的速度和/或在历史小区中停留的时间配置一些相关的测量参数，从而指导辅基站触发终端设备进行切换准备。下面结合图7，对本申请实施例提供的历史信息的记录方法进行详细描述。
图7是本申请实施例提供的一种历史信息的记录方法的示意性流程图。如图7所示，该方法可以包括步骤710-720，下面对步骤710-720进行详细描述。
步骤710：当前辅节点获取终端设备经过的历史小区的信息。
历史小区的信息可以是终端设备经过的历史小区的信息，这里经过可以理解为终端设备接入该小区或者终端设备驻留在该小区或该小区为终端设备提供通信或连接服务。可选的，所述历史小区的信息包括所述终端设备在历史小区中停留的时间和/或在历史小区中移动的速度信息。
当前辅节点可以理解为该辅节点为终端设备提供提供通信或连接服务，或者终端设备接入该辅节点。当前主节点可以理解为该主节点为终端设备提供提供通信或连接服务，或者终端设备接入该主节点。
当前辅节点获取终端设备经过的历史小区的信息的具体实现方式有多种，可以是从终端设备接收该历史小区的信息，或者可以从主节点MN接收该历史小区的信息，该历史小区的信息可以是主节点MN记录的，或者还可以是终端设备记录并上报给主节点MN的， 或者还可以是终端设备记录并上报给辅节点的，或者还可以是在切换场景中，主节点MN作为目标基站，从其他节点获得的网络侧记录的，或者主节点MN作为目标基站，从其他节点获得的终端设备上报的。下面会结合具体的实施例进行详细描述，此处不再赘述。
终端设备经过历史小区的速度信息可以是终端设备自己上报的，或者还可以是主节点MN根据终端设备在经过的历史小区中停留的时间以及主节点MN对应频点小区的覆盖面积大小确定出速度信息，本申请对此不做具体限定。
需要说明的是，终端设备经过历史小区的速度信息可以是一个具体的速度数值，或者还可以是移动状态信息，例如，该移动状态信息可以包括但不限于：高度移动状态、中速移动状态、低速移动状态。
本申请实施例中，终端设备在经过的历史小区中停留的时间可以是终端设备在对应小区待过的时间，或者还可以是终端设备进入该小区的时间点，例如，绝对时间，某年某月某日等。
应理解，终端设备在经过的历史小区中停留的时间可以是终端设备自己上报的，或者还可以是主节点MN根据终端设备经过历史小区中停留的时间以及经过的历史小区数目确定终端设备在一个历史小区中停留的时间。
本申请实施例中，终端设备经过的历史小区的信息包括以下情况中的一种或多种：该终端设备在空闲态(RRC_idle)下经过的小区信息，该终端设备在去活动态(RRC_inactive)下经过的小区信息，该终端设备在连接态(RRC_connected)下经过的小区信息。可选地
步骤720：所述辅节点根据所述历史小区的信息进行切换准备。
本申请实施例中切换准备可以包括但不限于：辅节点SN向终端设备下发测量配置，辅节点SN确定是否进行切换。
以辅节点SN根据终端设备经过的历史小区的信息向终端设备下发测量配置为例。辅节点SN可以根据终端设备经过的历史小区的信息确定测量配置中的触发上报时间(time to trigger)。例如，当终端设备经过历史小区的速度较大(例如大于一速度阈值)时，可以将测量配置中的触发上报时间设置的短一些(例如小于一时间阈值)，以便于终端设备可以在较短的时间内触发上报测量结果。又如，当终端设备经过历史小区的速度较小(例如小于一速度阈值)时，可以将测量配置中的触发上报时间设置的长一些(例如大于一时间阈值)，以便于保证终端设备测量结果的准确性或避免过早切换终端设备。
以辅节点SN根据终端设备经过的历史小区的信息确定是否进行切换为例。辅节点SN可以根据终端设备在经过的历史小区中停留的时间和/或经过历史小区的速度信息确定是否切换至目标小区。例如，辅节点SN在某个小区中停留的时间较短(例如小于一时间阈值)和/或经过该小区的速度较小(例如小于一速度阈值)，辅节点SN可以确定不切换至该小区。例如，辅节点SN在某个小区中停留的时间较长(例如大于一时间阈值)和/或经过该小区的速度较大(例如大于一速度阈值)，辅节点SN可以考虑切换至该小区。又例如，辅节点SN根据终端设备经过的历史小区中停留的时间和/或经过历史小区的速度信息确定该终端设备的移动速度较小(例如小于一速度阈值)，辅节点SN可以确定可以把终端设备切换到覆盖范围较小的小区(例如小于一覆盖范围的小区)。如果辅节点SN确定该终端设备的移动速度较大(例如大于一速度阈值)，辅节点SN可以确定无需把终端设备切换到覆盖范围较小的小区(例如大于一覆盖范围的小区)。
应理解，本申请实施例中大于可以理解为一个数值比另一个数值大，也即对于任意存在的两个数值(第一数值，第二数值)，都可在同一数轴上找到其对应的点，若第一数值在第二数值的右侧，则第一数值大于第二数值。小于理解为一个数值比另一个数值小，也即对于任意存在的两个数值(第一数值，第二数值)，都可在同一数轴上找到其对应的点，若第一数值在第二数值的左侧，则第一数值小于第二数值。
下面以终端设备经过的历史小区的信息为该终端设备在RRC_idle下经过的小区信息和/或在连接态(RRC_connected)下经过的主小区的信息为例，结合图8-图11进行详细描述。下面的例子仅仅是为了帮助本领域技术人员理解本申请实施例，而非要将申请实施例限制于所示例的具体数值或具体场景。本领域技术人员根据所给出的例子，显然可以进行各种等价的修改或变化，这样的修改和变化也落入本申请实施例的范围内。
图8是本申请实施例提供的另一种历史信息的记录方法的示意性流程图。如图所示，该方法包括步骤810-820，下面分别对步骤810-820进行详细描述。
步骤810：当前主节点MN将终端设备经过的历史小区的信息发送给当前辅节点SN。
本申请实施例中当前辅节点SN获得的终端设备经过的历史小区的信息可以包括但不限于以下中的一种或多种：
终端设备经过的历史小区的物理小区标识(physical cell identification，PCI)；
终端设备经过的历史小区的全局小区标识(global cell identity，GCI)；
终端设备经过的历史小区的频点；
终端设备在经过的历史小区中停留的时间；
终端设备经过历史小区的速度信息；
终端设备经过的历史小区的小区类型(比如小区大小为非常小，小，中，大中的某种)。
终端设备在经过的历史小区中移动的RRC状态(例如，空闲态(RRC_idle)、连接态(RRC_connected)、去活动态(RRC_inactive))，以及在该RRC状态中待的时间；
终端设备在经过的历史小区下的波束(beam)信息，例如，终端设备的服务beam信息，或者终端设备最好的beam信息。可选的，这里的beam信息可以是指同步信号块(synchronization signal block，SSB)或信道状态信息参考信号(channel-state information reference signal，CSI-RS)。
下面以终端设备为UE作为示例，列举出一种可能的历史小区的信息信元结构。
Figure PCTCN2020107879-appb-000001
Figure PCTCN2020107879-appb-000002
可选地，在一些实施例中，历史小区的信息是终端设备记录并上报给当前主节点MN的。例如，参见图9，在图8中的步骤810之前还包括步骤910-920。
步骤910：终端设备记录经过的历史小区的信息。
在当前的5G系统中，终端设备的无限资源控制(radio resource control，RRC)状态可以包括空闲态(RRC_idle)、连接态(RRC_connected)和去活动态(RRC_inactive),其中，RRC_inactive是新无线(new radio，NR)新引入的一种无线资源控制RRC状态(又称为“RRC非激活态”或者“RRC去活动态”或“非激活态”)。RRC_inactive与空闲态一样，在RRC_inactive下，终端设备与网络断开了RRC连接，从而达到与空闲态一样的省电效果。不同于空闲态的是，在RRC_inactive下，终端设备和接入网设备保存终端设备的上下文，当终端设备回到RRC连接态时，能够复用先前保存的终端设备的上下文，快速恢复连接。
本申请实施例中终端设备在记录经过的历史小区的信息时，可以记录在RRC_idle下经过的小区信息，或者还可以记录在RRC_inactive下经过的小区信息，或者还可以记录在RRC_connected下经过的小区信息。该小区可以是终端设备在RRC_connected下历史的服务小区或在RRC_idle或RRC_inactive下历史的驻留小区，上述服务小区或驻留小区可以是主节点MN下的小区，或者还可以是其他小区(例如终端设备没有建立双连接，终端设备只位于一个基站的一个小区中，终端设备的RRC状态可以是连接态、去活动态或者空闲态)。
作为一个示例，当小区改变时，例如终端设备由RRC_connected的主小区或RRC_idle的驻留小区或在RRC_inactive的驻留小区改变为另外一个同系统同无线接入技术(radio access technology，RAT)或者同系统不同RAT(比如连接到5GC的LTE基站和连接到5GC的NR基站之间)或者或异系统小区，或者终端设备进入一个非服务区(when entering out of service)，终端设备在保存的移动历史信息中增加一个实体，该实体用于记录历史小区的信息。(可选的，对应的实体数目是有限的，如果数目超过了最大数目，则先删除最旧的实体)。终端设备可以按照以下方式记录相关内容：
如果先前服务小区(例如可以是先前的主小区)的全局小区标识CGI可得(即可以获得)，终端设备则可以在该实体的访问小区标识(visited cell id)中携带该CGI。或者在该实体的visited cell ID中携带该服务小区的物理小区标识PCI和频点。该终端设备还可以在该实体中记录在先前服务小区中待的时间以及速度信息。
下面对终端设备确定速度信息的具体实现方式进行详细描述。
该终端设备可以记录并上报在某一时刻，经过小区时的速度和/或在该小区中的移动 状态信息，或者还可以记录并上报经过一个或多个小区的平均速度和/或在该一个或多个小区中的移动状态信息。
以终端设备记录在经过一个或多个小区的的移动状态信息为例。终端设备可以在一段时间范围内根据终端设备小区重选的次数与一定门限的比较确定移动状态信息。中速移动状态是指终端设备在一段时间内小区重选的次数在一定范围内(比如超过或等于一个值A，但低于或等于另外一个取值B，或者超过一个值A但不超过一个值B)。高速移动状态是指终端设备在一段时间内小区重选的次数超过一定取值(比如超过取值B)。正常移动状态是指终端设备在一段时间内小区重选的次数低于一定取值(比如低于A，或不超过A)。可选地，终端设备在进行移动状态信息判断时，不考虑连续的小区重选(比如一个小区重选之后，又重选回来。比如从小区1重选到小区2，之后又重选到小区1。比如这时候只认为进行了一次小区重选)。
可选地，上述时间范围和小区重选次数门限可以是网络侧通过广播消息发送给终端设备的。可选地，以上移动状态信息可以是终端设备在刚进入RRC_connected态之前的移动状态信息。应理解，以上移动状态信息可以是终端设备在进入RRC_connected态之前最近确定的移动状态信息，在终端设备进入RRC_connected态后，将上述移动状态信息上报给网络侧。
作为另一个示例，当终端设备从其他一个RAT进入到当前RAT中并在当前RAT中处于RRC_Connect或RRC_idle态，或者终端设备从非服务区进入到当前RAT中并在当前RAT中处于RRC_Connect或RRC_idle态，终端设备在保存的移动历史中新增一个实体，该实体用于记录历史小区的信息(对应的实体数目是有限的，如果数目超过了最大数目，则先删除最旧的实体)。在该实体中记录在当前RAT之外待的时间。
步骤920：终端设备将记录的历史小区的信息发送至当前主节点MN。
当终端设备从RRC_inactive或RRC_idle重新接入网络时，终端设备在接入网络时，可以将记录的历史小区的信息发送至当前主节点MN。
具体可选地，终端设备会指示网络侧(例如，主节点MN)，终端设备保存了移动历史信息。作为示例而非限定，终端设备可以在RRC连接设置完成(RRC connection setup complete)消息或RRC连接建立重返完成(RRC connection resume complet)消息中携带一个指示信息，指示终端设备具有经过的历史小区的信息。之后主节点MN可以请求终端设备上报记录的历史小区的信息，例如，主节点MN可以在UE信息请求(UE information request)消息中携带一个指示信息，该指示信息用于请求终端设备发送记录的历史小区的信息。终端设备在收到请求之后上报移动历史信息。例如，可以在UE信息响应(UE information response)消息中携带终端设备记录的历史小区的信息。
需要说明的是，终端设备在不同的小区或基站间切换时，源小区或源基站会把该终端设备上报的历史小区的信息发送给目标小区或目标基站(比如，源小区或源基站可以在向目标小区或目标基站发送的切换请求消息中携带终端设备上报的历史小区的信息)。在切换过程中，当前主节点作为该目标基站，此时当前主节点可以从源基站接收历史小区的信息。
可选地，在另一些实施例中，历史小区的信息是当前主节点MN或/和其他节点记录的。参见图10，在步骤810之前还包括步骤1010。
步骤1010：当前主节点MN或/和其他节点记录终端设备经过的历史小区的信息。
当前主节点MN或/和其他节点可以记录终端设备在RRC_connected经过的该节点下经过的历史小区的信息。当前主节点MN或/和其他节点可以记录的终端设备经过的历史小区的信息与终端设备自己记录的历史小区的信息相同，具体的请参考上文中终端设备自己记录的历史小区的信息的描述，此处不再赘述。其他节点会把其记录的终端设备经过的历史小区的信息发送给当前主节点MN。比如在不同的小区或基站间切换时，源小区或源基站会把该终端设备上报的历史小区的信息发送给目标小区或目标基站(比如，源小区或源基站可以在向目标小区或目标基站发送的切换请求消息中携带终端设备上报的历史小区的信息)。
下面对当前主节点MN或/和其他节点确定历史小区的信息中的移动速度信息的具体实现方式进行详细描述。
作为另一个示例，当前主节点MN或/和其他节点确定终端设备经过一个或多个小区的平均速度和/或在该一个或多个小区中的移动状态信息。当前主节点MN或/和其他节点可以根据终端设备上报的在一定时间内终端设备小区重选的次数以及在各个小区中停留的时间、当前主节点MN或/和其他节点对应频点小区的覆盖面积大小确定终端设备经过一个或多个小区的平均速度和/或在该一个或多个小区中的移动状态信息。例如，当前主节点MN或/和其他节点根据终端设备历史经过的三个小区的时间以及该三个小区的覆盖面积，确定出终端设备在经过该三个小区的速度信息。
作为另一个示例，当前主节点MN根据主节点或/和其他节点记录的在一个或多个小区中停留的时间、当前主节点MN或/和其他节点对应频点小区的覆盖面积大小确定终端设备经过一个或多个小区的平均速度和/或在该一个或多个小区中的移动状态信息。例如，当前主节点MN根据终端设备历史经过的三个小区的时间以及该三个小区的覆盖面积，确定出终端设备在经过该三个小区的速度信息。
继续参见图8，在步骤820中，当前辅节点SN根据终端设备经过的历史小区的信息进行切换准备。
步骤820与步骤720对应，具体的请参考步骤720中的描述，此处不再赘述。
可选地，在一些实施例中，终端设备还可以直接将记录的上述历史小区的信息发送给当前辅节点SN。参见图11，该方法包括步骤1110-1130，下面分别步骤1110-1130进行详细描述。
步骤1110：终端设备记录经过的历史小区的信息。
与图9中的步骤910对应，具体的请参考步骤910中的描述，此处不再赘述。
步骤1120：终端设备将经过的历史小区的信息发送至当前辅节点SN。
可选的，在该步骤中，终端设备可以直接把经过的历史小区的信息发送给当前辅节点SN，比如通过信令无线承载3(signalling radio bearer 3，SRB3)。终端设备也可以先把经过的历史小区的信息发送给当前主节点MN，当前主节点MN再发送给当前辅节点SN。比如终端设备在发给当前主节点MN的RRC消息中携带该历史小区的信息，之后再由当前主节点发送给辅节点。又比如终端设备在给当前主节点MN的RRC消息中嵌套一个给当前辅节点的RRC消息，在给当前辅节点的RRC消息中携带该历史小区的信息，之后再由当前主节点把给当前辅节点的RRC消息发送给当前辅节点。
步骤1130：当前辅节点SN根据终端设备经过的历史小区的信息进行切换准备。
与图7中的步骤720对应，具体的请参考步骤720中的描述，此处不再赘述。
上文中介绍了辅节点SN根据终端设备经过主节点MN下的小区的信息进行切换准备。但是，由于终端设备在主节点MN下移动的小区数目可能和终端设备在辅节点SN下移动的小区数目不相同，另外，辅节点SN的小区变更时，可能主节点MN的小区并没有改变，所以辅节点SN根据终端设备在经过主节点MN下的小区中停留的时间和/或在主节点MN下的小区中移动的速度信息信息来作为切换准备的参考可能不是特别准确。作为一个示例，请参见图12-13，在图12中，终端设备在主节点MN下移动的小区数目为2个，而该终端设备在辅节点SN下移动的小区数目为6个，辅节点SN如果根据终端设备在经过主节点MN下的2个小区中停留的时间和/或在主节点MN下的小区中移动的速度信息信息来进行辅节点SN切换准备，其结果并不准确。又如，在图13中，辅节点SN的小区变更了多个，而主节点MN的小区并没有改变，因此，辅节点SN如果根据终端设备在经过主节点MN下的2个小区中停留的时间和/或在主节点MN下的小区中移动的速度信息信息来进行辅节点SN切换准备，其结果并不准确。本申请实施例中辅节点SN可以根据终端设备在辅节点SN下的小区中移动的历史信息进行切换准备。
可选地，在一些实施例中，终端设备可以记录在RRC_connected下经过的主节点MN下的历史小区的信息以及辅节点SN下的历史小区的信息，并将记录的历史小区的信息发送至主节点MN，由主节点MN发送给辅节点SN。下面结合图14进行详细描述。
图14是本申请实施例提供另一种历史信息的记录方法的示意性流程图。如图所示，该方法包括步骤1410-1440，下面分别对步骤1410-1440进行详细描述。
步骤1410：终端设备记录该终端设备经过的历史小区的信息，该历史小区包括一个或多个辅节点SN下的小区。
终端设备可以记录以下中的一种或多种：
终端设备记录在RRC_idle下经过的历史小区的信息；
终端设备记录在RRC_inactive下经过的历史小区的信息；
终端设备记录在RRC_connected下经过的主节点MN下的历史小区的信息以及辅节点SN下的历史小区的信息。
应理解，终端设备具体记录的历史小区的信息请参见图7中步骤710的描述，此处不再赘述。
可选地，在一些实施例中，终端设备记录在RRC_connected下经过的主节点MN下的历史小区的信息以及辅节点SN下的历史小区的信息时，还可以将辅节点SN下的主辅小区和主节点MN下的主小区关联起来。也就是说，终端设备在辅节点SN下的多个历史小区之间切换时，始终与同一个主节点MN的主小区连接。比如当主节点MN的主小区改变时，终端设备可以在新的主小区下重新记录该终端设备在辅节点SN下移动的历史小区。
下面结合具体的例子，对终端设备记录在RRC_connected下经过的主节点MN下的历史小区的信息以及辅节点SN下的历史小区的信息的具体实现方式进行详细描述。应理解，应理解，下面的例子仅仅是为了帮助本领域技术人员理解本申请实施例，而非要将申请实施例限制于所示例的具体数值或具体场景。本领域技术人员根据所给出的例子，显然可以进行各种等价的修改或变化，这样的修改和变化也落入本申请实施例的范围内。
需要说明的是，如果主小区改变，终端设备可以在新的主小区下重新记录该终端设备在辅节点SN下移动的历史小区，此时终端设备会在保存的移动历史信息中新增一个之前主小区的实体。如果主辅小区改变，终端设备会在保存的移动历史信息中新增一个之前主辅小区的实体。
作为一个示例，当主辅小区(primary secondary cell，PScell)小区改变或释放或辅节点释放时，如果当前主节点的主小区(primary cell,PCell)没有改变且最近的移动历史的实体是当前主小区的，则终端设备在该主小区对应的移动历史中包括一个记录之前主辅小区的信息。
应理解，双连接可以是两个不同的节点同时为一个终端设备提供数据传输服务，也就是说，在双连接的场景下，一个终端设备同时和两个不同的节点保持RRC连接。在双连接的中，终端设备首先发起随机接入信道的(random access channel，RACH)的小区(cell)所在的组(group)就是主小区组(master cell group，MCG)。在MCG下，可能会有很多个cell，其中有一个用于发起初始接入的小区，这个小区称为主小区(primary cell,PCell)。顾名思义，PCell是MCG里面最“主要”的小区。同样地，在辅小区组(secondary cell group，SCG)下也会有一个最主要的小区，也就是PScell，也可以简单理解为在SCG下发起初始接入的小区。
需要说明的是，可选的，对应的主辅小区的数目是有限的，如果数目超过了最大数目，则先删除最旧的主辅小区。
如果先前的主辅小区的全局小区标识CGI可得，则在经过的主辅小区标识(visited PSCell ID)中携带该CGI。或者在visited PSCell ID中携带该小区的物理小区标识PCI和频点。终端设备还可以在该实体中记录该终端设备在先前的主辅小区中待的时间。
作为另一个示例，当PScell小区改变或释放时或辅节点释放时，如果当前主小区没有改变且最近的移动历史的实体没有记录该当前主小区的，则终端设备在保存的移动历史的实体中增加一个记录当前主小区的信息。需要理解的是，当主辅小区改变或释放或辅节点释放时，如果实体中记录有当前主小区的信息，需要在当前主小区的信息中增加主辅小区改变之前的主辅小区的信息。如果当前实体中没有记录当前主小区的信息，需要在实体中增加当前主小区的信息，再在当前主小区的信息中增加关联主辅小区改变之前的主辅小区的信息。
需要说明的是，对应的主小区的数目是有限的，如果数目超过了最大数目，则先删除最旧的主小区。
如果主小区的全局小区标识CGI可得，则在该实体的visited Cell id中携带该CGI。或者在该实体的visited Cell id中携带该小区的物理小区标识PCI和频点。
如果先前的主辅小区的全局小区标识CGI可得，则在visited PSCell id中携带该CGI。或者在visited PSCell id中携带该小区的物理小区标识PCI和频点。并记录该终端设备在先前的主辅小区中待的时间。
下面以终端设备为UE作为示例，列举出一种辅节点SN下的主辅小区和主节点MN下的主小区之间相关联的历史小区的信息的信元结构。
Figure PCTCN2020107879-appb-000003
Figure PCTCN2020107879-appb-000004
需要说明的是，以上信元结构并不要求以上信元同时出现。
可选地，以该信元结构为例，当主辅小区改变或释放或辅节点释放时，如果当前visited cell information list中最新的visited cell information是当前主小区的信息(即最新的visited cell information中visited cell ID是当前主小区的标识)，则在当前主小区对应的visited cell information下的visited PScell Information list中增加主辅小区改变之前的主辅小区的信息； 如果当前visited cell information list中最新的visited cell information不是当前主小区的信息，visited cell information list中增加当前主小区的信息(比如增加一个visited cell information，其中包括当前主小区的信息)，再在当前主小区的信息中增加关联主辅小区改变之前的主辅小区的信息(比如在当前主小区的visited cell information下的visited PScell Information list中增加主辅小区改变之前的主辅小区信息visited PScell information)。
可选地，在一些实施例中，当对于主节点MN移动(比如主节点MN下的主小区改变)之后，新主节点MN中关联的辅节点SN对应的主辅小区的时间跨度(time spent)需要重新开始记录。即辅节点SN对应的主辅小区的time spent是指该主辅小区在对应主节点MN下某个主小区下的time spent。例如当主节点MN下的主小区改变时，则终端设备在visited cell information list中增加之前的主小区的信息，然后再在之前的主小区的信息中的visited PScell information list中增加当前主辅小区的信息。主小区的信息和主辅小区的信息具体内容同上，其中主辅小区的time spent是指该主辅小区在对应主节点MN下对应的主小区下的time spent。
可选地，在一些实施例中，当删除辅节点SN时，需要记录释放了辅节点SN的指示信息，该指示信息可以用于指示终端设备未连续配置主辅小区PSCell。
具体的，该指示信息可以携带在visited cell information中，或者还可以携带在visited PSCell information中。下面分别列举出上述两种不同情况下历史小区的信息的信元结构。
作为一个示例，该指示信息可以携带在visisted cell information中，历史小区的信息的信元结构如下所示。
Figure PCTCN2020107879-appb-000005
Figure PCTCN2020107879-appb-000006
应理解，上述指示信息理解为，终端设备接收到释放主小区和主辅助小区为终端设备建立的双连接的消息。可以是MR-DC SCG release指示。
作为另一个示例，该指示信息可以携带在visited PScell information中，历史小区的信息的信元结构如下所示。
Figure PCTCN2020107879-appb-000007
Figure PCTCN2020107879-appb-000008
需要说明的是，以上信元结构并不要求以上信元同时出现。
还需要说明的是，visited PSCell information list中的最后一个visited PSCell information释放掉。在最后一个visited PSCell information释放掉之后，在visited cell information list中增加当前主小区的信息(比如增加一个visited cell information，其中包括当前主小区的信息)，再在当前主小区的信息中增加当前主辅小区的信息(比如在当前主小区的visited cell information下的visited PScell Information list中增加主辅小区改变之前的主辅小区信息visited PScell information。
可选地，在一些实施例中，终端设备分别记录主节点的主小区的历史小区的信息和辅节点的主辅小区的历史小区的信息。主小区的历史小区的信息和辅节点的主小区的历史小区的信息如下，基本含义同以上的描述。终端设备无需记录主节点的主小区和辅节点的主辅小区之间的关联关系。当终端设备的主节点的主小区改变时，则终端设备在visited cell information list中记录之前的主小区信息。当终端设备的辅节点的主辅小区改变或释放或辅节点释放时，则终端设备在visited PScell information list中记录之前的辅节点的主辅小区的信息。可选的，辅节点的主辅小区的信息包括小区标识，在该主辅小区待的时间，进入该主辅小区的开始时间，指示辅节点下的小区释放的信息的至少一种。可选的，当终端设备从没有连接到辅节点变为连接到辅节点时，辅节点的主辅小区的信息中还可以包括离上次释放辅节点的时间长度(比如，终端设备可以在主辅小区改变时记录之前的主辅小区 信息时，记录离上次释放辅节点的时间长度。可选地，一种可能的实现方式中，只需在从没有连接到辅节点到变为连接到辅节点之后的第一个主辅小区改变时记录离上次释放辅节点的时间长度)。另一种可能的实现方式中，只需在从没有连接到辅节点到变为连接到辅节点时记录离上次释放辅节点的时间长度。
下面以终端设备为UE作为示例，列举出一种历史小区信息的信元结构。
Figure PCTCN2020107879-appb-000009
Figure PCTCN2020107879-appb-000010
需要说明的是，以上信元结构并不要求以上信元同时出现。
可选地，一种可能的实现方式中，终端设备可以将该终端设备经过的历史小区的信息发送给当前主节点MN，通过当前主节点MN转发给当前辅节点SN。具体的请参见步骤1420-1430中的描述。
步骤1420：终端设备将该终端设备经过的历史小区的信息发送至当前主节点MN。
终端设备可以将记录的以下中的一种或多种历史小区的信息发送至当前主节点MN：
终端设备记录在RRC_idle下经过的历史小区的信息；
终端设备记录在RRC_inactive下经过的历史小区的信息；
终端设备记录在RRC_connected下经过的主节点MN下的历史小区的信息以及辅节点SN下的历史小区的信息。
应理解，当前主节点MN和终端设备记录在RRC_connected下经过的主节点MN可能是一个节点，或者也可能是不同的节点，本申请实施例对此不做不做具体限定。
需要说明的是，图14中的步骤1420为可选的。也就是说，可选地，一种可能的实现方式是终端设备将记录的该终端设备经过的历史小区的信息发送至当前主节点MN。可选地，另一种可能的实现方式是终端设备将记录的该终端设备经过的历史小区的信息分别发送至当前主节点MN和当前辅节点SN，下面会结合图15对另一种可能的实现方式进行详细描述，此处不再赘述。
步骤1430：当前主节点MN将终端设备经过的历史小区的信息发送至当前辅节点SN。
主节点MN在接收到终端设备上报的经过的主节点MN下的历史小区的信息以及辅节点SN下的历史小区的信息后，可以将终端设备在一个或多个辅节点SN下移动的历史小区的信息发送至当前辅节点SN。或者，还可以将终端设备在主节点MN下移动的历史小区的信息以及在一个或多个辅节点SN下移动的历史小区的信息均发送至当前辅节点SN。
应理解，一个或多个辅节点SN和当前的辅节点SN可能是一个节点，或者也可能是不同的节点，本申请实施例对此不做不做具体限定。
可选地，另一种可能的实现方式中，终端设备可以将直接该终端设备经过的历史小区的信息发送给当前辅节点SN。具体的请参见步骤1435中的描述。
步骤1435:终端设备将终端设备经过的历史小区的信息发送给当前辅节点SN。
在该步骤中，终端设备可以直接把经过的历史小区的信息发送给当前辅节点SN，比如通过信令无线承载3(Signalling Radio Bearer 3，SRB3)。终端设备也可以先把经过的历史小区的信息发送给当前主节点MN，当前主节点MN再发送给当前辅节点SN。比如终端设备在发给当前主节点MN的RRC消息中携带该历史小区的信息，之后再由当前主节点发送给当前辅节点。又比如终端设备在给当前主节点MN的RRC消息中嵌套一个给当前辅节点的RRC消息，在给当前辅节点的RRC消息中携带该历史小区的信息，之后再由当前主节点把给当前辅节点的RRC消息发送给当前辅节点。
可选地，在一些实施例中，上述两种可能的实现方式可以同时存在，或者还可以仅有一种其中一种实现方式，本申请对此不做具体限定。比如，可选地，另一种可能的实现方式是终端设备将记录的该终端设备经过的历史小区的信息分别发送至当前主节点MN和当前辅节点SN，下面会结合图15对另一种可能的实现方式进行详细描述，此处不再赘述。
步骤1440：应理解，辅节点SN根据终端设备经过的历史小区的信息进行切换准备。
应理解，辅节点SN可以根据终端设备在辅节点SN下经过的历史小区的信息进行切换准备，具体的有关切换准备的描述，请参考步骤720中的描述，此处不再赘述。
本申请实施例中，终端设备在辅节点SN下经过的历史小区的信息可以更好的反映辅节点SN的移动小区或数目，辅节点SN根据终端设备在辅节点SN下经过的历史小区的信息进行切换准备，例如，在下发测量配置时，根据终端设备在该辅节点SN下经过的历史小区的信息进下发测量配置，会使得测量更准确。
可选地，在一些实施例中，图14所示的方法还可以包括步骤1450，下面对步骤1450进行详细描述。
步骤1450：当前主节点MN将终端设备经过的历史小区的信息发送至核心网或者操作管理和维护(operation administration and maintenance，OAM)网元。
应理解，OAM网元也可以称为网管。
当终端设备在RRC_connected时，当前主节点MN可以将终端设备经过的历史小区的信息通知给核心网或者OAM网元，之后终端设备从RRC_connected回到RRC_idle，之后再回到RRC_connected时，核心网或者OAM网元会将该终端设备经过的历史小区的信息发送给当前主节点MN，以便于当前主节点MN可以根据终端设备经过的历史小区的信息进行切换。
可以理解的，上述实施例中的部分或全部步骤仅是示例，本申请实施例还可以执行其它操作或者各种操作的变形。此外，各个步骤可以按照上述实施例呈现的不同的顺序来执行，并且有可能并非要执行上述实施例中的全部操作。
可选地，在一些实施例中，终端设备记录主节点MN下的历史小区的信息以及辅节点SN下的历史小区的信息，并可以直接将辅节点SN下的历史小区的信息通知给当前辅节点SN。下面结合图15进行详细描述。
图15是本申请实施例提供另一种历史信息的记录方法的示意性流程图。如图所示，该方法包括步骤1510-1540，下面分别对步骤1510-1540进行详细描述。
步骤1510：终端设备记录该终端设备经过的历史小区的信息，该历史小区包括一个或多个辅节点SN。
与步骤1410对应，具体的请参考步骤1410中的描述，此处不再赘述。
可选的，在一些实施例中，图15所示的方法还可以包括步骤1520。
步骤1520：终端设备将记录的历史小区的信息发送给当前主节点MN。
具体的，终端设备可以通过第一信令无线承载(signalling radio bearer，SRB)与主节点MN之间进行信令传输，例如，终端设备通过第一SRB将记录的历史小区的信息发送给当前主节点MN。该历史小区的信息可以包括RRC_idle/RRC_inactive经过的驻留小区的信息和RRC_connected态下经过的主节点的主小区的信息，还可以进一步包括RRC_Connected态下经过的辅节点的主辅小区的信息。该历史小区的信息可以是步骤1410 中的visited cell information list，或者visited cell information和visited PScell information。。
第一SRB可以是SRB1或SRB2，其中，在接入层(access stratu，AS)层安全激活之后，网络可配置SRB2，SRB2用于非接入层(non-access stratum，NAS)消息的发送，使用的是专用控制信道(dedlicated control channel，DCCH)逻辑信道。SRB1用于无线资源控制(radio resource control，RRC)消息的发送，需要说明的是，RRC消息中可能包含NAS消息。或者SRB1用于在SRB2建立之前NAS消息的发送，使用的是DCCH逻辑信道。SRB2的优先级低于SRB1的优先级。
步骤1530：终端设备将历史小区的信息发送给当前辅节点SN。
具体的，终端设备可以通过第二SRB与辅节点SN之间进行信令传输，例如，终端设备通过第二SRB将记录的在RRC_connected下经过的辅节点SN下的历史小区的信息发送给当前辅节点SN。第二SRB可以是SRB3，用于特定RRC消息的发送，使用的是DCCH逻辑信道。
该历史小区的信息可以参考步骤1520中历史小区的信息的相关内容。
可选地，终端设备可以先把经过的历史小区的信息发送给当前主节点MN，主节点MN再发送给当前辅节点SN。比如终端设备在给当前主节点MN的RRC消息中嵌套一个给当前辅节点的RRC消息，在给当前辅节点的RRC消息中携带该历史小区的信息，之后再由当前主节点把给当前辅节点的RRC消息发送给当前辅节点。
步骤1540：当前辅节点SN根据终端设备经过的历史小区的信息进行切换准备。
当前辅节点SN可以根据终端设备在辅节点SN下经过的历史小区的信息进行切换准备，具体的有关切换准备的描述，请参考步骤720中的描述，此处不再赘述。
可选地，在一些实施例中，图15所示的方法还可以包括步骤1550，下面对步骤1550进行详细描述。
步骤1550：当前主节点MN将终端设备经过的历史小区的信息发送至核心网或者OAM网元。
当终端设备在RRC_connected时，当前主节点MN可以将终端设备经过的历史小区的信息通知给核心网或者OAM网元，之后终端设备从RRC_connected回到RRC_idle，之后再从RRC_idle回到RRC_connected时，核心网或者OAM网元会将该终端设备经过的历史小区的信息发送给当前主节点MN，以便于当前主节点MN可以根据终端设备经过的历史小区的信息进行切换。
可选地，在一些实施例中，辅节点SN自己可以记录终端设备在辅节点SN的小区下移动的历史小区的信息。相比较与主节点MN或终端设备记录该终端设备在辅节点SN的小区下移动的历史小区的信息而言，辅节点SN记录更能反映终端设备在辅节点SN下对应的历史小区的信息，从而更好的便于辅节点SN根据终端设备在辅节点SN的小区下移动的历史小区的信息进行切换准备或无需依赖于主节点MN或终端设备记录的历史小区的信息。下面结合图16进行详细描述。
图16是本申请实施例提供另一种历史信息的记录方法的示意性流程图。如图所示，该方法包括步骤1610-1620，下面分别对步骤1610-1620进行详细描述。
步骤1610：当前辅节点SN记录终端设备在当前辅节点SN的小区下移动的历史小区的信息。
当前辅节点SN自己可以记录终端设备在当前辅节点SN的小区移动的历史小区的信息。应理解，当前辅节点SN自己记录的历史小区的信息的具体内容与目前终端设备记录或主节点MN记录的内容可以类似，可以具体的请参见图7中步骤710的描述或图8中步骤810中描述，此处不再赘述。可选的，当前辅节点SN自己记录的历史小区的信息还可以包括终端设备进入该当前辅节点SN的主辅小区的时间点(比如绝对时间，某年某月某日等，或者相对到该MN请求增加SN的时间偏移等信息)。
下面以终端设备为UE作为示例，列举出一种可能的辅节点SN自己记录的历史小区的信息信元结构。
Figure PCTCN2020107879-appb-000011
需要说明的是，以上信元结构并不要求以上信元同时出现。
应理解，上述absolute time可以是终端设备经过主辅小区的绝对时间，time migration进入经过的主辅小区的时间相对到主节点MN请求增加辅节点SN的时间偏移。
可选地，在一些实施例中，当前辅节点SN记录的历史小区的信息是在同一个主节点MN的主小区下的记录。当主节点MN的主小区改变时，当前辅节点SN在新的主小区下重新记录。即，当前辅节点SN记录的历史小区的信息依附于一个主节点MN的主小区。比如可以和图14中步骤1410中的visited cell information list中包括visited PScell information list的方式体现依附关系。例如，可以在图14中步骤1410中的visited cell  information list中重新记录一个visited PScell information list。
步骤1620：当前辅节点SN将记录的历史小区的信息发送给当前主节点MN。
作为一个示例，当当前主节点MN的主小区改变时，当前主节点MN向辅节点SN发送指示信息，该指示信息用于指示当前主节点MN的主小区发生改变，当前辅节点SN可以根据该指示信息将记录的历史小区的信息上报给当前主节点MN。之后当前辅节点SN会在当前主节点MN新的主小区下重新开始记录历史小区的信息。
作为另一个示例，当前当主节点MN发生切换，也就是说，当当前主节点MN改变时，辅节点SN可以获知主节点MN发生切换，辅节点SN可以主动将记录的历史小区的信息上报给当前主节点MN。之后辅节点SN会在新的主节点MN主小区下重新开始记录历史小区的信息。
作为另一个示例，当当前辅节点SN发生改变时(比如终端设备从一个辅节点切换到另外一个辅节点)，当前辅节点SN会主动将记录的历史小区的信息上报给当前主节点MN。
当前主节点MN和当前辅节点SN之间的关联关系可以是当前主节点MN记录的，或者还可以是当前辅节点SN记录的，本申请实施例对此不做具体限定。例如，当前主节点MN向当前辅节点SN发送当前主节点MN的主小区的标识，当前辅节点SN根据当前主节点MN的主小区的标识生成辅节点SN记录的历史小区的信息与主节点MN的主小区之间的对应关系。又如，当前辅节点SN将记录的所有终端设备在该当前辅节点SN的小区移动的历史小区的信息发送给当前主节点MN，当前主节点MN记录历史小区的信息与当前主节点MN的主小区之间的对应关系。
可选地，在一些实施例中，图16所示的方法还可以包括步骤1630，下面对步骤1630进行详细描述。
步骤1630：当前辅节点SN将记录的历史小区的信息发送给目标辅节点SN。
在当前辅节点SN发生切换的场景中，例如，将当前辅节点SN切换至目标辅节点SN。该当前辅节点SN可以作为源辅节点，将记录的历史小区的信息发送给目标辅节点SN，具体的实现方式有多种，本申请对此不做具体限定。
一种可能的实现方式中，源辅节点可以直接将记录的历史小区的信息发送给目标辅节点。目标辅节点收到该历史小区的信息之后，目标辅节点应该继续收集终端设备移动的历史小区的信息。也就是说，目标辅节点在源辅节点记录的基础上再增加记录终端设备在自己覆盖范围下的小区下移动的历史信息。比如源辅节点记录的终端设备移动的历史小区为(cell 1，cell 2，cell 3)，目标辅节点是在源辅节点的基础上再记录，比如记录的终端设备移动的历史小区为(cell 1，cell 2，cell 3，cell 4，cell 5，cell 6)。
另一种可能的实现方式中，源辅节点可以将记录的历史小区的信息发送给主节点MN，由主节点MN转发给目标辅节点，目标辅节点在源辅节点记录的基础上再增加记录终端设备在自己覆盖范围下的小区下移动的历史信息。
可选地，当前辅节点把历史小区的信息发送给当前主节点之后，当前主节点可以根据当前辅节点的历史小区的信息以及之前主节点和辅节点之间关联的历史小区的信息，生成新的主节点和辅节点之间关联的历史小区的信息。例如，当前主节点可以根据当前辅节点发送的历史小区的信息中的时间信息来生成新的主节点和辅节点之间关联的历史小区的信息。可选的，当前主节点可以将新的主节点和辅节点之间关联的历史小区的信息发送给 目标辅节点。
可选地，在一些实施例中，图16所示的方法还可以包括步骤1640，下面对步骤1640进行详细描述。
步骤1640：当前主节点MN记录终端设备在该当前主节点MN的小区移动的历史小区的信息。
历史小区的信息的具体内容请参见图7中步骤710的描述或图8中步骤810中描述，此处不再赘述。
Figure PCTCN2020107879-appb-000012
需要说明的是，以上信元结构并不要求以上信元同时出现。
可选地，在一些实施例中，步骤1630和步骤1640可以同时存在，也可以无需同时存在。
需要说明的是，本申请实施例中，在辅节点SN下的主辅小区和主节点MN下的主小区之间相关联的场景中，当主节点MN或辅节点SN在记录终端设备的历史小区的信息时，当主小区的列表达到最大数目时，可以按照记录的先后关系把该列表中最早的小区消息删除。可选地，同时删除该主小区对应的主辅小区列表中所有主辅小区。当辅服务小区的列表达到最大数目时，基站可以按照记录的先后关系把当前主小区下面的主辅小区列表中最早的小区消息删除。
可选地，在一些实施例中，图16所示的方法还可以包括步骤1650，下面对步骤1650进行详细描述。
步骤1650：当前主节点MN将终端设备经过的历史小区的信息发送至核心网或者OAM网元。
当终端设备在RRC_connected时，当前主节点MN可以将终端设备经过的历史小区的信息通知给核心网或者OAM网元，之后终端设备从RRC_connected态进入RRC_idle，之后再回到RRC_connected时，核心网或者OAM网元会将该终端设备经过的历史小区的信息发送给当前主节点MN，以便于当前主节点MN可以根据终端设备经过的历史小区的信息进行切换。
可选地，当前主节点MN还可以根据当前主节点MN保存的历史小区的信息和当前辅节点SN反馈的历史小区的信息合并各个MN下SN小区的历史小区的信息。
可以理解的，上述实施例中的部分或全部步骤仅是示例，本申请实施例还可以执行其它操作或者各种操作的变形。此外，各个步骤可以按照上述实施例呈现的不同的顺序来执行，并且有可能并非要执行上述实施例中的全部操作。
可选地，在一些实施例中，核心网可根据终端设备的历史小区的信息或者核心网从其他实体比如网管获取终端设备的历史小区的信息进行用户拥塞相关的分析。核心网可以从基站接收终端设备的历史小区的信息,或从终端设备获得历史小区的信息,或者从其它实体比如OAM获得终端设备的历史小区的信息。历史小区的信息包括主基站节点MN下的历史小区的信息和/或经过的辅节点SN下的历史小区的信息。
应理解，核心网可以根据请求来进行拥塞分析，该分析可能是请求对某个区域的拥塞分析，也可能是根据某个终端设备ID，对该终端设备在当前请求分析的时刻所处的区域的拥塞分析。该请求还可能进行用户面的拥塞分析，或者还可以是控制面的拥塞分析，或者还可以是通过控制面发送的数据的拥塞分析，或者还可以是三者都分析。并且还可以指示一个门限，当拥塞级别超过该门限的时候，网络数据分析功能(network data analysis function，NWDAF)将提供对应的分析结果。
具体的，核心网可以根据输入的数据(input data)信息获得对应的输出分析(output analytics)。NWDAF收集的详细的输入数据信息请参见表1，NWDAF输出的拥塞分析请参见表2。
表1输入的数据信息
Figure PCTCN2020107879-appb-000013
Figure PCTCN2020107879-appb-000014
需要说明的是，表1中的性能测量主要是从OAM获取最小化路测技术(minimization of drive-test，MDT)的测量结果或OAM获取的统计量。MDT的基本思想是运营商通过签约用户的商用终端进行测量上报来部分替代传统的路测工作，实现自动收集终端测量数据，以检测和优化无线网络中的问题和故障。该技术的应用场景：运营商一般每一个月都要做例行的网络覆盖路测，针对用户投诉也会做一些针对特定区域的进行呼叫质量路测，这些场景的路测都可以用MDT代替。现有的MDT技术的测量类型可分为以下几种：
1、信号水平测量：由UE测量无线信号的信号水平，将测量结果上报给基站或基站控制器；
2、服务质量(quality of service，Qos)测量：通常由基站执行Qos测量(比如：业务的流量、业务的吞吐量，业务时延等)，或者也可以由终端设备测量，比如上行处理时延，或者也可以是基站和终端设联合处理，比如空口时延测量(测量数据包经过基站的服务数据适配协议(service data daptation protocol，SDAP)或包数据汇聚协议(packet data convergence protocol，PDCP)层到该数据包达到终端设备的SDAP/PDCP层的时间)。
3、可接入性测量：由终端设记录无线资源控制(radio resource control，RRC)连接建立失败的信息，并上报给基站或基站控制器。
表2 NWDAF输出的拥塞分析
Figure PCTCN2020107879-appb-000015
下面以对某个特定的终端设备进行拥塞分析为例，结合图17，对核心网在接收到终端设备的历史小区的信息进行用户拥塞相关的分析的具体实现过程进行详细描述。
图17是本申请实施例提供的一种拥塞分析的方法的示意性流程图。如图17所示，该方法可以包括步骤1710-1790，下面分别对步骤1710-1790进行详细描述。
步骤1710：网络功能(network function，NF)网元向NWDAF发送请求对某个特定的终端设备进行用户数据拥塞分析的消息。
NF网元向NWDAF发送的请求对某个特定的终端设备进行用户数据拥塞分析的消息中可以携带该终端设备的ID。
可选地,在一些实施例中,NWDAF可能不知道某个特定的终端设备的位置，NWDAF可以根据从AMF或OAM中获取的终端设备的历史小区的信息来获取该终端设备的位置。比如根据历史小区的信息中的时间信息(比如进入历史小区的时刻和在历史小区待的时间) 来推算出当前终端设备的位置信息,比如对应的主小区或主辅小区的小区标识等。
可选地，在一些实施例中，NWDAF可能不知道某个特定的终端设备的位置，NWDAF可以通过步骤1720-1750获取终端设备的位置。
步骤1720：NWDAF向UDM查询服务该终端设备的AMF的ID。
NWDAF可以向UDM发送请求消息，该请求消息用于向UDM查询服务该终端设备的AMF。
步骤1730：UDM向NWDAF反馈服务该终端设备的AMF的ID。
UDM在接收到NWDAF发送的查询消息之后，可以向NWDAF反馈服务该终端设备的AMF的ID。
步骤1740：NWDAF向AMF发送查询终端设备的位置。
NWDAF在接收到UDM反馈的服务该终端设备的AMF的ID，可以向该AMF发送查询终端设备的位置。
步骤1750：AMF向NWDAF反馈终端设备的位置。
AMF可以在接收到NWDAF发送的查询某个特定的终端设备的位置的请求信息之后，可以将该特定的终端设备的位置发送至NWDAF。
可选的地,AMF可以根据终端设备的历史小区的信息,以及该终端设备具有DC的能力,可以获得终端设备当前可能的主节点的主小区和辅节点的主辅小区.可以将该特定的终端设备的主小区和主辅小区发送至NWDAF。
步骤1760：NWDAF向OAM请求该特定的终端设备的所处的位置的用户数据拥塞状态。
步骤1770：OAM向NWDAF反馈该特定的终端设备的所处的位置的用户数据拥塞状态。
可选地，在一些实施例中，如果NWDAF已经有了上述用户数据拥塞状态，可以省略步骤1760-1770。
步骤1780：NWDAF推导出对应的请求分析结果。
步骤1790：NWDAF向NF提供用户数据拥塞分析结果。
可选地，在一些实施例中，核心网还可以根据终端设备的历史小区的信息进行qos潜在改变的分析。核心网可以从基站接收终端设备的历史小区的信息,或从终端设备获得历史小区的信息,或者从其它实体比如OAM获得终端设备的历史小区的信息。历史小区的信息包括主基站节点MN下的历史小区的信息和/或经过的辅节点SN下的历史小区的信息。
具体的，核心网根据输入的qos需求(比如标准的5QI，或非标准的qos参数)、位置信息(比如感兴趣的路径，或者地理区域形式(比如区域坐标，或区域的多边形描述等))、以及触发通知qos改变的一些指标门限(比如上行平均吞吐量或下行平均吞吐量等)、可选还包括指示通知qos潜在改变的时间间隔，当满足对应的条件时，触发对应的qos改变通知，通知中可以指示对应qos改变的位置信息以及qos改变的时间信息等。目前NWDAF利用的输入数据(即利用那些统计数据进行拥塞分析)请参见表3。
表3为进行qos潜在改变的分析所收集的数据
Figure PCTCN2020107879-appb-000016
Figure PCTCN2020107879-appb-000017
其中，上述的每个时间段是在指运营商定义的OAM统计量对应的统计间隔，qos潜在改变的分析输出结果为对应的qos潜在改变发生时对应的位置和时间信息。
应理解，上述进行qos潜在改变的分析可以适用于车联网(vehicle to everything，V2X)的场景。V2X中的“X”代表不同的通信目标，V2X可以包括但不限于：汽车对汽车(vehicle to vehicle，V2V)，汽车对路标设(vehicle to infrastructure，V2I)，汽车对网络(vehicle to network，V2N)，和汽车对行人(vehicle to pedestrian，V2P)。
V2X的业务可以通过两种方式提供：即，基于PC5接口的方式和基于Uu接口的方式。其中PC5接口是在直通链路(sidelink)基础上定义的接口，使用这种接口，通信设备(例如，汽车)之间可以直接进行通信传输。PC5接口可以在覆盖外(out of coverage，OOC)和覆盖内(in coverage，IC)下使用，但只有得到授权的通信设备才能使用PC5接口进行传输。
在本申请中，V2X直通链路传输支持两种资源分配模式，即，调度模式(可以称为：mode3或者mode1)和UE自主资源选择模式(可以称为：mode4或者mode 2)：
其中，调度模式要求UE处于无线资源控制(radio resource control，RRC)连接态。在调度过程中，UE首先向接入设备(例如，eNB)进行资源请求，然后接入设备会分配V2X直通链路上的控制和数据资源。作为示例而非限定，在本申请中，调度模式下的调度可以包括半静态调度(semi-persistent scheduling，SPS)。
另外，在UE自主资源选择模式下，UE自己选择传输资源并自主调节V2X直通链路上控制和数据的传输格式。
下面结合图18，对核心网根据终端设备的历史小区的信息进行qos潜在改变的分析的具体实现过程进行详细描述。
图18是本申请实施例提供的一种qos潜在改变的分析的方法的示意性流程图。如图18所示，该方法可以包括步骤1810-1840，下面分别对步骤1810-1840进行详细描述。
步骤1810：用户向NWDAF发送对qos潜在改变进行分析的请求。
用户可能会提供不同的参数集合以便提供不同的位置信息和时间信息的混合需求。
步骤1820：NWDAF从OAM处收集相关的数据，具体请参见表3中的描述，此处不再赘述。
步骤1830：NWDAF进行数据分析。
NWDAF验证通知qos潜在改变的条件是否满足。NWDAF在请求的时间信息中的任何一个小区中通过比较目标第五代服务质量标识(5G Qos identifier，5QI)对应的期望关键性能指标(key performance indication，KPI)和用户提供的门限值，检测是否需要通知 qos潜在改变。该期望KPI是从OAM中获得的统计推到出的。如果该终端设备是支持DC的终端,NWDAF可以根据终端设备的历史小区的信息中主节点下的主小区信息和辅节点下的主辅小区信息,估计出在请求的时间信息中该终端设备可能的主小区和关联的主辅小区,通过综合考虑在OAM中获得的主小区和关联的主辅小区收集的数据得到期望KPI。
从OAM获得的信息还可能包括有计划或非计划的端点检测以及其他不在第三代合作伙伴计划(3rd generation partnership project，3GPP)范围内的一些信息。
步骤1840：NWDAF向用户反馈针对qos潜在改变的响应或者通知。
NWDAF可以把针对qos潜在改变的响应或者通知提供给用户。
上文结合图7至图18，详细描述了本申请实施例提供的历史信息的记录方法，下面将结合图19至图24，详细描述本申请的装置实施例。应理解，方法实施例的描述与装置实施例的描述相互对应，因此，未详细描述的部分可以参见前面方法实施例。
图19是本申请实施例提供的一种历史信息的记录装置1900的示意性框图。可以理解的是，该历史信息的记录装置1900可以是辅节点，也可以是可用于辅节点的部件。
该历史信息的记录装置1900可以包括：
获取模块1910，用于获取终端设备经过的历史小区的信息，所述历史小区的信息包括所述终端设备在所述历史小区中停留的时间和/或在所述历史小区中移动的速度信息；
处理模块1920，用于根据所述历史小区的信息进行切换准备。
上述技术方案中，历史信息的记录装置可以获取终端设备在历史小区中停留的时间和/或在历史小区中移动的速度信息，并根据上述信息可以准确的配置一些相关的测量参数，从而指导辅基站触发终端设备进行切换准备。
可选地，所述获取模块1910具体用于：从所述终端设备或当前主节点接收所述历史小区的信息。
可选地，所述历史小区包括一个或者多个历史主辅小区，所述一个或者多个历史主辅小区包括一个或者多个历史辅节点和/或当前辅节点下的主辅小区。
可选地，所述一个或者多个历史主辅小区的信息是所述终端设备记录的。
可选地，所述历史小区的信息包括所述一个或者多个主辅小区与一个主小区之间的关联关系，其中，所述终端设备接入所述一个或者多个主辅小区时，所述终端设备接入所述主小区，所述主小区为一个或者多个历史主节点或者当前主节点下的主小区。
可选地，所述历史小区的信息还包括：指示信息，所述指示信息用于指示所述终端设备接收到第一辅小区组的释放信息，所述第一辅小区组为第一历史主辅小区对应的历史辅节点下的小区组，所述第一历史主辅小区为所述一个或者多个历史主辅小区中的一个。
可选地，所述历史小区的信息还包括所述终端设备在所述历史小区中的无线资源控制RRC状态信息，所述RRC状态信息包括连接态或空闲态或非激活态。
可选地，所述历史小区包括一个或者多个历史主辅小区，所述一个或者多个历史主辅小区包括一个或者多个历史辅节点下的主辅小区。
可选地，所述一个或者多个历史主辅小区的信息是由所述一个或者多个历史辅节点记录的。
可选地，所述获取模块1910还用于：从当前主节点接收所述一个或者多个历史主辅小区的信息。
可选地，所述一个或者多个历史主辅小区还包括当前辅节点下的主辅小区。
可选地，所述当前辅节点下的主辅小区的信息由所述当前辅节点记录。
可选地，所述辅节点1900还包括：
发送模块1930，用于将所述历史小区的信息发送至当前主节点。
可选地，所述历史小区的信息还包括所述终端设备在所述历史小区中的RRC状态信息，所述RRC状态信息包括连接态。
可选地，所述历史小区的信息包括所述一个或者多个主辅小区与一个主小区之间的关联关系，其中，所述终端设备接入所述一个或者多个主辅小区时，所述终端设备接入所述主小区，所述主小区为一个或者多个历史主节点或者当前主节点下的主小区。
可选地，所述处理模块1920具体用于：根据所述历史小区的信息下发测量配置，或者确定是否进行切换。
可选地，所述历史小区的信息还包括所述终端设备在所述历史小区中的波束信息。
可选地，所述历史小区的信息包括以下中的一种或多种：
所述历史小区的全局小区标识CGI；
所述历史小区的物理小区标识PCI；
所述历史小区的频点。
图20是本申请实施例提供的一种历史信息的记录装置2000的示意性框图。可以理解的是，该历史信息的记录装置2000可以是终端设备，也可以是可用于终端设备的部件。
该历史信息的记录装置2000可以包括：
记录模块2010，用于记录所述终端设备经过的历史小区的信息，所述历史小区的信息包括所述终端设备在所述历史小区中停留的时间和/或在所述历史小区中移动的速度信息，所述历史小区包括一个或者多个历史主辅小区，所述一个或者多个历史主辅小区包括一个或者多个历史辅节点和/或当前辅节点下的主辅小区；
发送模块2020，用于将所述历史小区的信息发送至当前辅节点。
可选地，所述历史小区的信息所述历史小区的信息包括所述一个或者多个主辅小区与一个主小区之间的关联关系，其中，所述终端设备接入所述一个或者多个主辅小区时，所述终端设备接入所述主小区，所述主小区为一个或者多个历史主节点或者当前主节点下的主小区。
可选地，所述历史小区的信息还包括：指示信息，所述指示信息用于指示所述终端设备接收到第一辅小区组的释放信息，所述第一辅小区组为第一历史主辅小区对应的历史辅节点下的小区组，所述第一历史主辅小区为所述一个或者多个历史主辅小区中的一个。
可选地，所述历史小区的信息还包括所述终端设备在所述历史小区中的无线资源控制RRC状态信息，所述RRC状态信息包括连接态或空闲态或非激活态。
可选地，所述历史小区的信息还包括所述终端设备在所述历史小区中的波束信息。
在另一种可能的实现方式中，所述历史小区的信息包括以下中的一种或多种：
所述历史小区的全局小区标识CGI；
所述历史小区的物理小区标识PCI；
所述历史小区的频点。
图21是本申请实施例提供的一种历史信息的记录装置2100的示意性框图。可以理解 的是，该历史信息的记录装置2100可以是主节点，也可以是可用于主节点备的部件。
该历史信息的记录装置2100可以包括：
获取模块2110，用于获取终端设备经过的历史小区的信息，所述历史小区的信息包括所述终端设备在所述历史小区中停留的时间和/或在所述历史小区中移动的速度信息；
发送模块2120，用于将所述历史小区的信息发送至辅节点。
可选地，所述获取模块2110具体用于：从所述终端设备接收所述历史小区的信息。
可选地，所述一个或者多个历史主辅小区的信息是所述终端设备记录的。
可选地，所述历史小区的信息包括所述一个或者多个主辅小区与一个主小区之间的关联关系，其中，所述终端设备接入所述一个或者多个主辅小区时，所述终端设备接入所述主小区，所述主小区为一个或者多个历史主节点或者当前主节点下的主小区。
可选地，所述历史小区的信息还包括：指示信息，所述指示信息用于指示所述终端设备接收到第一辅小区组的释放信息，所述第一辅小区组为第一历史主辅小区对应的历史辅节点下的小区组，所述第一历史主辅小区为所述一个或者多个历史主辅小区中的一个。
可选地，所述历史小区的信息还包括所述终端设备在所述历史小区中的无线资源控制RRC状态信息，所述RRC状态信息包括连接态或空闲态或非激活态。
可选地，所述获取模块2110用于：接收所述辅节点发送的所述历史小区的信息。
可选地，所述历史小区的信息还包括所述终端设备在所述历史小区中的波束信息。
可选地，所述历史小区的信息包括以下中的一种或多种：
所述历史小区的全局小区标识CGI；
所述历史小区的物理小区标识PCI；
所述历史小区的频点。
图22是本申请实施例提供的一种辅节点2200的示意性框图。该辅节点2200可以包括：处理器2201、收发器2202以及存储器2203。
其中，该处理器2201可以与收发器2202通信连接。该存储器2203可以用于存储该终端设备2200的程序代码和数据。因此，该存储器2203可以是处理器2201内部的存储单元，也可以是与处理器2201独立的外部存储单元，还可以是包括处理器2201内部的存储单元和与处理器2201独立的外部存储单元的部件。
可选的，辅节点2200还可以包括总线2204。其中，收发器2202、以及存储器2203可以通过总线2204与处理器2201连接；总线2204可以是外设部件互连标准(peripheral component interconnect，PCI)总线或扩展工业标准结构(extended industry standard architecture，EISA)总线等。所述总线2204可以分为地址总线、数据总线、控制总线等。为便于表示，图22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。
处理器2201例如可以是中央处理器(central processing unit，CPU)，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)，现场可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。
收发器2202可以是包括上述天线和发射机链和接收机链的电路，二者可以是独立的 电路，也可以是同一个电路。
收发器2202可以对应于上文图19中的获取模块1910，收发器2202用于执行图19中的获取模块1910执行的所有步骤。处理器2201可以对应于上文图19中的处理模块1920，处理器2201用于执行图19中的处理模块1920执行的所有步骤。
可以理解的是，本申请实施例中的辅节点2200的各个模块的功能和对应的操作可以参考方法实施例中的相关描述。此外，本申请实施例中的模块也可以称为单元或者电路等，本申请实施例对此不做限定。
图23是本申请实施例提供的一种终端设备2300的示意性框图。该终端设备2300可以包括：处理器2301、收发器2302以及存储器2303。
其中，该处理器2301可以与收发器2302通信连接。该存储器2303可以用于存储该终端设备2300的程序代码和数据。因此，该存储器2303可以是处理器2301内部的存储单元，也可以是与处理器2301独立的外部存储单元，还可以是包括处理器2301内部的存储单元和与处理器2301独立的外部存储单元的部件。
可选的，终端设备2300还可以包括总线2304。其中，收发器2302、以及存储器2303可以通过总线2304与处理器2301连接；总线2304可以是外设部件互连标准(peripheral component interconnect，PCI)总线或扩展工业标准结构(extended industry standard architecture，EISA)总线等。所述总线2304可以分为地址总线、数据总线、控制总线等。为便于表示，图23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。
处理器2301例如可以是中央处理器(central processing unit，CPU)，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)，现场可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。
收发器2302可以是包括上述天线和发射机链和接收机链的电路，二者可以是独立的电路，也可以是同一个电路。
处理器2301可以对应于上文图20中的记录模块2010，处理器2301用于执行图20中记录模块2010执行的所有步骤。收发器2302可以对应于上文图20中的记录模块发送模块2020，收发器2302用于执行图20中的发送模块2020执行的所有步骤。
可以理解的是，本申请实施例中的终端设备2300的各个模块的功能和对应的操作可以参考方法实施例中的相关描述。此外，本申请实施例中的模块也可以称为单元或者电路等，本申请实施例对此不做限定。
图24是本申请实施例提供的一种主节点2400的示意性框图。该主节点2400可以包括：处理器2401、收发器2402以及存储器2403。
其中，该处理器2401可以与收发器2402通信连接。该存储器243可以用于存储主节点2400的程序代码和数据。因此，该存储器2403可以是处理器2401内部的存储单元，也可以是与处理器2401独立的外部存储单元，还可以是包括处理器2401内部的存储单元和与处理器2401独立的外部存储单元的部件。
可选的，主节点2400还可以包括总线2404。其中，收发器2402、以及存储器2403 可以通过总线2404与处理器2401连接；总线2404可以是外设部件互连标准(peripheral component interconnect，PCI)总线或扩展工业标准结构(extended industry standard architecture，EISA)总线等。所述总线2404可以分为地址总线、数据总线、控制总线等。为便于表示，图24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。
处理器2401例如可以是中央处理器(central processing unit，CPU)，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)，现场可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。
收发器2402可以是包括上述天线和发射机链和接收机链的电路，二者可以是独立的电路，也可以是同一个电路。
收发器2402可以对应于上文图21中的获取模块2110、发送模块2120，并用于执行图21中的获取模块2110、发送模块2120执行的所有步骤。
可以理解的是，本申请实施例中的主节点2400的各个模块的功能和对应的操作可以参考方法实施例中的相关描述。此外，本申请实施例中的模块也可以称为单元或者电路等，本申请实施例对此不做限定。
本申请实施例还提供了计算机可读介质，用于存储计算机程序，该计算机程序包括用于执行上述任一方面的任意可能的实现方式中的方法的指令。
本申请实施例还提供了一种计算机程序产品，应用于终端设备中，该计算机程序产品包括：计算机程序代码，当该计算机程序代码被计算机运行时，使得该计算机执行上述任一方面的任意可能的实现方式中的方法。
本申请实施例还提供了一种芯片系统，应用于通信设备中，该芯片系统包括：至少一个处理器、至少一个存储器和接口电路，所述接口电路负责所述芯片系统与外界的信息交互，所述至少一个存储器、所述接口电路和所述至少一个处理器通过线路互联，所述至少一个存储器中存储有指令；所述指令被所述至少一个处理器执行，以进行上述各个方面的所述的方法中所述网元的操作。
本申请实施例还提供了一种计算机程序产品，应用于通信设备中，所述计算机程序产品包括一系列指令，当所述指令被运行时，以进行上述各个方面的所述的方法中所述网元的操作。
另外，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种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。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
应理解，在本申请实施例中，“与A相应的B”表示B与A相关联，根据A可以确定B。但还应理解，根据A确定B并不意味着仅仅根据A确定B，还可以根据A和/或其它信息确定B。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其他任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产 品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如数字视频光盘(digital video disc，DVD))、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
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以所述权利要求的保护范围为准。

Claims (83)

  1. 一种历史信息的记录方法，其特征在于，包括：
    当前辅节点获取终端设备经过的历史小区的信息，所述历史小区的信息包括所述终端设备在所述历史小区中停留的时间和/或在所述历史小区中移动的速度信息；
    所述当前辅节点根据所述历史小区的信息进行切换准备。
  2. 根据权利要求1所述的方法，其特征在于，所述辅节点获取终端设备经过的历史小区的信息，包括：
    所述当前辅节点从所述终端设备或当前主节点接收所述历史小区的信息。
  3. 根据权利要求1或2所述的方法，其特征在于，所述历史小区包括一个或者多个历史主辅小区，所述一个或者多个历史主辅小区包括一个或者多个历史辅节点和/或当前辅节点下的主辅小区。
  4. 根据权利要求3所述的方法，其特征在于，所述一个或者多个历史主辅小区的信息是所述终端设备记录的。
  5. 根据权利要求4所述的方法，其特征在于，所述历史小区的信息包括所述一个或者多个主辅小区与一个主小区之间的关联关系，其中，所述终端设备接入所述一个或者多个主辅小区时，所述终端设备接入所述主小区，所述主小区为一个或者多个历史主节点或者当前主节点下的主小区。
  6. 根据权利要求3至5中任一项所述的方法，其特征在于，所述历史小区的信息还包括：
    指示信息，所述指示信息用于指示所述终端设备接收到第一辅小区组的释放信息，所述第一辅小区组为第一历史主辅小区对应的历史辅节点下的小区组，所述第一历史主辅小区为所述一个或者多个历史主辅小区中的一个。
  7. 根据权利要求1至6中任一项所述的方法，其特征在于，所述历史小区的信息还包括所述终端设备在所述历史小区中的无线资源控制RRC状态信息，所述RRC状态信息包括连接态或空闲态或非激活态。
  8. 根据权利要求1所述的方法，其特征在于，所述历史小区包括一个或者多个历史主辅小区，所述一个或者多个历史主辅小区包括一个或者多个历史辅节点下的主辅小区。
  9. 根据权利要求8所述的方法，其特征在于，所述一个或者多个历史主辅小区的信息是由所述一个或者多个历史辅节点记录的。
  10. 根据权利要求8或者9所述的方法，其特征在于，所述方法还包括：所述当前辅节点从当前主节点接收所述一个或者多个历史主辅小区的信息。
  11. 根据权利要求8至10中任一项所述的方法，其特征在于，所述一个或者多个历史主辅小区还包括当前辅节点下的主辅小区。
  12. 根据权利要求11所述的方法，其特征在于，所述当前辅节点下的主辅小区的信息由所述当前辅节点记录。
  13. 根据权利要求8至12任一项所述的方法，其特征在于，所述方法还包括：
    所述当前辅节点将所述历史小区的信息发送至当前主节点。
  14. 根据权利要求9至13中任一项所述的方法，其特征在于，所述历史小区的信息还包括所述终端设备在所述历史小区中的RRC状态信息，所述RRC状态信息包括连接态。
  15. 根据权利要求8至14中任一项所述的方法，其特征在于，所述历史小区的信息包括所述一个或者多个主辅小区与一个主小区之间的关联关系，其中，所述终端设备接入所述一个或者多个主辅小区时，所述终端设备接入所述主小区，所述主小区为一个或者多个历史主节点或者当前主节点下的主小区。
  16. 根据权利要求1至15中任一项所述的方法，其特征在于，所述辅节点根据所述历史小区的信息进行切换准备，包括：
    所述当前辅节点根据所述历史小区的信息下发测量配置，或者确定是否进行切换。
  17. 根据权利要求1至16中任一项所述的方法，其特征在于，所述历史小区的信息还包括所述终端设备在所述历史小区中的波束信息。
  18. 根据权利要求1至17中任一项所述的方法，其特征在于，所述历史小区的信息包括以下中的一种或多种：
    所述历史小区的全局小区标识CGI；
    所述历史小区的物理小区标识PCI；
    所述历史小区的频点。
  19. 一种历史信息的记录方法，其特征在于，包括：
    终端设备记录所述终端设备经过的历史小区的信息，所述历史小区的信息包括所述终端设备在所述历史小区中停留的时间和/或在所述历史小区中移动的速度信息，所述历史小区包括一个或者多个历史主辅小区，所述一个或者多个历史主辅小区包括一个或者多个历史辅节点和/或当前辅节点下的主辅小区；
    所述终端设备将所述历史小区的信息发送至当前辅节点。
  20. 根据权利要求19所述的方法，其特征在于，所述终端设备将所述历史小区的信息发送至当前辅节点，包括：
    所述终端设备将所述历史小区的信息先发送至当前主节点MN，通过主节点MN透传至当前辅节点。
  21. 根据权利要求19或20所述的方法，其特征在于，所述历史小区的信息所述历史小区的信息包括所述一个或者多个主辅小区与一个主小区之间的关联关系，其中，所述终端设备接入所述一个或者多个主辅小区时，所述终端设备接入所述主小区，所述主小区为一个或者多个历史主节点或者当前主节点下的主小区。
  22. 根据权利要求19至21中任一项所述的方法，其特征在于，所述历史小区的信息还包括：
    指示信息，所述指示信息用于指示所述终端设备接收到第一辅小区组的释放信息，所述第一辅小区组为第一历史主辅小区对应的历史辅节点下的小区组，所述第一历史主辅小区为所述一个或者多个历史主辅小区中的一个。
  23. 根据权利要求19至22中任一项所述的方法，其特征在于，所述历史小区的信息还包括所述终端设备在所述历史小区中的无线资源控制RRC状态信息，所述RRC状态信息包括连接态或空闲态或非激活态。
  24. 根据权利要求19至23中任一项所述的方法，其特征在于，所述历史小区的信息还包括所述终端设备在所述历史小区中的波束信息。
  25. 根据权利要求19至24中任一项所述的方法，其特征在于，所述历史小区的信息包括以下中的一种或多种：
    所述历史小区的全局小区标识CGI；
    所述历史小区的物理小区标识PCI；
    所述历史小区的频点。
  26. 一种历史信息的记录方法，其特征在于，包括：
    当前主节点获取终端设备经过的历史小区的信息，所述历史小区的信息包括所述终端设备在所述历史小区中停留的时间和/或在所述历史小区中移动的速度信息；
    所述当前主节点将所述历史小区的信息发送至辅节点。
  27. 根据权利要求26所述的方法，其特征在于，所述当前主节点获取终端设备经过的历史小区的信息，包括：
    所述当前主节点从所述终端设备接收所述历史小区的信息。
  28. 根据权利要求26或27所述的方法，其特征在于，所述历史小区包括一个或者多个历史主辅小区，所述一个或者多个历史主辅小区包括一个或者多个历史辅节点和/或当前辅节点下的主辅小区。
  29. 根据权利要求28所述的方法，其特征在于，所述一个或者多个历史主辅小区的信息是所述终端设备记录的。
  30. 根据权利要求29所述的方法，其特征在于，所述历史小区的信息包括所述一个或者多个主辅小区与一个主小区之间的关联关系，其中，所述终端设备接入所述一个或者多个主辅小区时，所述终端设备接入所述主小区，所述主小区为一个或者多个历史主节点或者当前主节点下的主小区。
  31. 根据权利要求26至30中任一项所述的方法，其特征在于，所述历史小区的信息还包括：
    指示信息，所述指示信息用于指示所述终端设备接收到第一辅小区组的释放信息，所述第一辅小区组为第一历史主辅小区对应的历史辅节点下的小区组，所述第一历史主辅小区为所述一个或者多个历史主辅小区中的一个。
  32. 根据权利要求26至31中任一项所述的方法，其特征在于，所述历史小区的信息还包括所述终端设备在所述历史小区中的无线资源控制RRC状态信息，所述RRC状态信息包括连接态或空闲态或非激活态。
  33. 根据权利要求26至32中任一项所述的方法，其特征在于，所述方法还包括：
    所述当前主节点接收所述当前辅节点发送的所述历史小区的信息。
  34. 根据权利要求26至33中任一项所述的方法，其特征在于，所述历史小区的信息还包括所述终端设备在所述历史小区中的波束信息。
  35. 根据权利要求26至34中任一项所述的方法，其特征在于，所述历史小区的信息包括以下中的一种或多种：
    所述历史小区的全局小区标识CGI；
    所述历史小区的物理小区标识PCI；
    所述历史小区的频点。
  36. 一种辅节点，其特征在于，包括：
    获取模块，用于获取终端设备经过的历史小区的信息，所述历史小区的信息包括所述终端设备在所述历史小区中停留的时间和/或在所述历史小区中移动的速度信息；
    处理模块，用于根据所述历史小区的信息进行切换准备。
  37. 根据权利要求36所述的辅节点，其特征在于，所述获取模块具体用于：从所述终端设备或当前主节点接收所述历史小区的信息。
  38. 根据权利要求36或37所述的辅节点，其特征在于，所述历史小区包括一个或者多个历史主辅小区，所述一个或者多个历史主辅小区包括一个或者多个历史辅节点和/或当前辅节点下的主辅小区。
  39. 根据权利要求38所述的辅节点，其特征在于，所述一个或者多个历史主辅小区的信息是所述终端设备记录的。
  40. 根据权利要求39所述的辅节点，其特征在于所述历史小区的信息包括所述一个或者多个主辅小区与一个主小区之间的关联关系，其中，所述终端设备接入所述一个或者多个主辅小区时，所述终端设备接入所述主小区，所述主小区为一个或者多个历史主节点或者当前主节点下的主小区。
  41. 根据权利要求38至40中任一项所述的辅节点，其特征在于，所述历史小区的信息还包括：指示信息，所述指示信息用于指示所述终端设备接收到第一辅小区组的释放信息，所述第一辅小区组为第一历史主辅小区对应的历史辅节点下的小区组，所述第一历史主辅小区为所述一个或者多个历史主辅小区中的一个区。
  42. 根据权利要求36至41中任一项所述的辅节点，其特征在于，所述历史小区的信息还包括所述终端设备在所述历史小区中的无线资源控制RRC状态信息，所述RRC状态信息包括连接态或空闲态或非激活态。
  43. 根据权利要求36所述的辅节点，其特征在于，所述历史小区包括一个或者多个历史主辅小区，所述一个或者多个历史主辅小区包括一个或者多个历史辅节点下的主辅小区。
  44. 根据权利要求43所述的辅节点，其特征在于，所述一个或者多个历史主辅小区的信息是由所述一个或者多个历史辅节点记录的。
  45. 根据权利要求43或44所述的辅节点，其特征在于，所述获取模块还用于：从当前主节点接收所述一个或者多个历史主辅小区的信息。
  46. 根据权利要求43至45中任一项所述的辅节点，其特征在于，所述一个或者多个历史主辅小区还包括当前辅节点下的主辅小区。
  47. 根据权利要求46所述的辅节点，其特征在于，所述当前辅节点下的主辅小区的信息由所述当前辅节点记录。
  48. 根据权利要求43至47中任一项所述的辅节点，其特征在于，还包括：
    发送模块，用于将所述历史小区的信息发送至当前主节点。
  49. 根据权利要求44至48中任一项所述的辅节点，其特征在于，所述历史小区的信息还包括所述终端设备在所述历史小区中的RRC状态信息，所述RRC状态信息包括连接态。
  50. 根据权利要求43至49中任一项所述的辅节点，其特征在于，所述历史小区的信息包括所述一个或者多个主辅小区与一个主小区之间的关联关系，其中，所述终端设备接入所述一个或者多个主辅小区时，所述终端设备接入所述主小区，所述主小区为一个或者多个历史主节点或者当前主节点下的主小区。
  51. 根据权利要求36至50中任一项所述的辅节点，其特征在于，所述处理模块具体用于：根据所述历史小区的信息下发测量配置，或者确定是否进行切换。
  52. 根据权利要求36至51中任一项所述的辅节点，其特征在于，所述历史小区的信息还包括所述终端设备在所述历史小区中的波束信息。
  53. 根据权利要求36至52中任一项所述的辅节点，其特征在于，所述历史小区的信息包括以下中的一种或多种：
    所述历史小区的全局小区标识CGI；
    所述历史小区的物理小区标识PCI；
    所述历史小区的频点。
  54. 一种终端设备，其特征在于，包括：
    记录模块，用于记录所述终端设备经过的历史小区的信息，所述历史小区的信息包括所述终端设备在所述历史小区中停留的时间和/或在所述历史小区中移动的速度信息，所述历史小区包括一个或者多个历史主辅小区，所述一个或者多个历史主辅小区包括一个或者多个历史辅节点和/或当前辅节点下的主辅小区；
    发送模块，用于将所述历史小区的信息发送至当前辅节点。
  55. 根据权利要求54所述的终端设备，其特征在于，所述终端设备将所述历史小区的信息先发送至当前主节点MN，通过主节点MN透传至当前辅节点。
  56. 根据权利要求54或55所述的终端设备，其特征在于，所述历史小区的信息所述历史小区的信息包括所述一个或者多个主辅小区与一个主小区之间的关联关系，其中，所述终端设备接入所述一个或者多个主辅小区时，所述终端设备接入所述主小区，所述主小区为一个或者多个历史主节点或者当前主节点下的主小区。
  57. 根据权利要求54至56中任一项所述的终端设备，其特征在于，所述历史小区的信息还包括：指示信息，所述指示信息用于指示所述终端设备接收到第一辅小区组的释放信息，所述第一辅小区组为第一历史主辅小区对应的历史辅节点下的小区组，所述第一历史主辅小区为所述一个或者多个历史主辅小区中的一个。
  58. 根据权利要求54至57中任一项所述的终端设备，其特征在于，所述历史小区的信息还包括所述终端设备在所述历史小区中的无线资源控制RRC状态信息，所述RRC状态信息包括连接态或空闲态或非激活态。
  59. 根据权利要求54至58中任一项所述的终端设备，其特征在于，所述历史小区的信息还包括所述终端设备在所述历史小区中的波束信息。
  60. 根据权利要求54至59中任一项所述的终端设备，其特征在于，所述历史小区的信息包括以下中的一种或多种：
    所述历史小区的全局小区标识CGI；
    所述历史小区的物理小区标识PCI；
    所述历史小区的频点。
  61. 一种主节点，其特征在于，包括：
    获取模块，用于获取终端设备经过的历史小区的信息，所述历史小区的信息包括所述终端设备在所述历史小区中停留的时间和/或在所述历史小区中移动的速度信息；
    发送模块，用于将所述历史小区的信息发送至辅节点。
  62. 根据权利要求61所述的主节点，其特征在于，所述获取模块具体用于：从所述终端设备接收所述历史小区的信息。
  63. 根据权利要求61或62所述的主节点，其特征在于，所述历史小区包括一个或者多个历史主辅小区，所述一个或者多个历史主辅小区包括一个或者多个历史辅节点和/或当前辅节点下的主辅小区。
  64. 根据权利要求63所述的主节点，其特征在于，所述一个或者多个历史主辅小区的信息是所述终端设备记录的。
  65. 根据权利要求64所述的主节点，其特征在于，所述历史小区的信息包括所述一个或者多个主辅小区与一个主小区之间的关联关系，其中，所述终端设备接入所述一个或者多个主辅小区时，所述终端设备接入所述主小区，所述主小区为一个或者多个历史主节点或者当前主节点下的主小区。
  66. 根据权利要求61至65中任一项所述的主节点，其特征在于，所述历史小区的信息还包括：
    指示信息，所述指示信息用于指示所述终端设备接收到第一辅小区组的释放信息，所述第一辅小区组为第一历史主辅小区对应的历史辅节点下的小区组，所述第一历史主辅小区为所述一个或者多个历史主辅小区中的一个。
  67. 根据权利要求61至66中任一项所述的主节点，其特征在于，所述历史小区的信息还包括所述终端设备在所述历史小区中的无线资源控制RRC状态信息，所述RRC状态信息包括连接态或空闲态或非激活态。
  68. 根据权利要求61至67中任一项所述的主节点，其特征在于，所述获取模块用于：接收所述辅节点发送的所述历史小区的信息。
  69. 根据权利要求61至68中任一项所述的主节点，其特征在于，所述历史小区的信息还包括所述终端设备在所述历史小区中的波束信息。
  70. 根据权利要求61至69中任一项所述的主节点，其特征在于，所述历史小区的信息包括以下中的一种或多种：
    所述历史小区的全局小区标识CGI；
    所述历史小区的物理小区标识PCI；
    所述历史小区的频点。
  71. 一种历史信息的记录装置，其特征在于，用于执行如权利要求1至16中任一项所述的方法。
  72. 一种历史信息的记录装置，其特征在于，用于执行如权利要求17至20中任一项所述的方法。
  73. 一种历史信息的记录装置，其特征在于，用于执行如权利要求21至28中任一项所述的方法。
  74. 一种计算机可读存储介质，其特征在于，包括指令，当其在历史信息的记录装置 上运行时，使得历史信息的记录装置执行如权利要求1至18中任一项所述的方法。
  75. 一种计算机可读存储介质，其特征在于，包括指令，当其在历史信息的记录装置上运行时，使得历史信息的记录装置执行如权利要求19至25中任一项所述的方法。
  76. 一种计算机可读存储介质，其特征在于，包括指令，当其在历史信息的记录装置上运行时，使得历史信息的记录装置执行如权利要求26至35中任一项所述的方法。
  77. 一种芯片，其特征在于，所述芯片获取指令并执行所述指令来实现上述如权利要求1至18中任一项所述的方法。
  78. 一种芯片，其特征在于，所述芯片获取指令并执行所述指令来实现上述如权利要求19至25中任一项所述的方法。
  79. 一种芯片，其特征在于，所述芯片获取指令并执行所述指令来实现上述如权利要求26至35中任一项所述的方法。
  80. 一种计算机程序产品，其特征在于，当所述计算机程序产品在计算机上运行时，使得所述计算机执行如权利要求1至18中任一项所述的方法。
  81. 一种计算机程序产品，其特征在于，当所述计算机程序产品在计算机上运行时，使得所述计算机执行如权利要求19至25中任一项所述的方法。
  82. 一种计算机程序产品，其特征在于，当所述计算机程序产品在计算机上运行时，使得所述计算机执行如权利要求26至35中任一项所述的方法。
  83. 一种系统，其特征在于，包括：如权利要求36至53中任一项所述的辅节点、如权利要求54至60中任一项所述的终端设备以及如权利要求61至70中任一项所述的主节点。
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