WO2020164549A1 - 确定跟踪区域的方法、终端设备和核心网设备 - Google Patents

确定跟踪区域的方法、终端设备和核心网设备 Download PDF

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Publication number
WO2020164549A1
WO2020164549A1 PCT/CN2020/075116 CN2020075116W WO2020164549A1 WO 2020164549 A1 WO2020164549 A1 WO 2020164549A1 CN 2020075116 W CN2020075116 W CN 2020075116W WO 2020164549 A1 WO2020164549 A1 WO 2020164549A1
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WIPO (PCT)
Prior art keywords
terminal device
location
core network
information
network device
Prior art date
Application number
PCT/CN2020/075116
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English (en)
French (fr)
Inventor
刘琼
晋英豪
谭巍
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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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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20755563.2A priority Critical patent/EP3913979A4/en
Publication of WO2020164549A1 publication Critical patent/WO2020164549A1/zh
Priority to US17/400,853 priority patent/US20210377845A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/06—Registration at serving network Location Register, VLR or user mobility server
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/18—Network planning tools
    • 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
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/04—User notification, e.g. alerting and paging, for incoming communication, change of service or the like multi-step notification using statistical or historical mobility data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/16—Mobility data transfer selectively restricting mobility data tracking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/06—Airborne or Satellite Networks

Definitions

  • This application relates to the field of communications, and more specifically to a method, terminal equipment and core network equipment for determining a tracking area.
  • the mobile network uses tracking area (TA) to track the location of the terminal device, and perform location management and paging on the terminal device.
  • TA tracking area
  • TAC tracking area code
  • the terminal device leaves this TA, it will receive broadcast information from other TA cells.
  • TAU tracking area update
  • the network device will update the TA list, add the new TA to the TA list, and notify the terminal device.
  • the network equipment sends a paging message to all the cells in the TA in the TA list through the TA list, looking for terminal equipment.
  • NTN non-terrestrial networks
  • an airborne platform e.g., satellite, etc.
  • DU distributed unit
  • the cell of the access network device in the air will follow the movement and sweep across the ground. From the perspective of the ground terminal device, even if the terminal device is not moving, the covered cell is constantly changing. In this case, the geographic location and the cell no longer have a binding relationship, and the change of the cell ID of the slave terminal device can no longer be used as a judgment basis for the terminal device TA update.
  • This application provides a method, terminal equipment and core network equipment for determining the tracking area, which can determine the tracking area of the terminal equipment in the NTN scenario.
  • this application provides a method for determining a tracking area.
  • the method includes: a terminal device sends indication information to a core network device, where the indication information is used to indicate the location of the terminal device; The first TA information of the core network device, where the first TA information includes the TA corresponding to the location of the terminal device, and the TA is determined according to the location of the terminal device.
  • the foregoing technical solution manages the tracking area of the terminal device according to the location of the terminal device, so that it does not depend on the change of the cell ID of the terminal device. That is to say, the change of the cell ID of the terminal device is no longer used as the basis for judging the terminal device TA update, but the absolute position of the terminal device is used as the basis for judging the terminal device TA update, so that the terminal device can be determined in the NTN scenario Tracking area.
  • the terminal device sending indication information to the core network device includes: when the location of the terminal device exceeds the range covered by all TAs indicated by the second TA information, the terminal The device sends the indication information to the core network device, and the second TA information is TA information currently used by the terminal device.
  • the terminal device initiates location update only when the terminal device exceeds the range covered by all TAs indicated by the original TA information, which can avoid frequent sending of instruction information.
  • the terminal device sending the indication information to the core network device includes: the terminal device sends a location update request to the core network device, and the location update request includes the indication information .
  • the indication information includes the location of the terminal device
  • the method further includes: the terminal device receives broadcast information sent by an access network device, and the broadcast information is used to indicate the How to determine the TA of the terminal device.
  • the terminal device determines the tracking area determination method through a broadcast message, so that different tracking area determination methods can be used for different scenarios, so that the determined tracking area is more accurate.
  • the method further includes: the terminal device sends a type of the terminal device to the core network device, and the type is a fixed terminal device FT or a mobile terminal device MT.
  • the core network device may configure different ranges of TAs for different types of terminal devices, for example, the TA of the FT is smaller and the TA of the MT is larger. In this way, paging resources can be allocated reasonably.
  • the indication information includes the TA corresponding to the location of the terminal device; before the terminal device sends the indication information to the core network device, the method further includes: The terminal device determines the TA corresponding to the location of the terminal device according to the location of the terminal device.
  • the terminal device determines the TA where the terminal device is located. Since the terminal device clearly knows where it is, the range of TA can be determined more accurately.
  • the method further includes: the method further includes: the terminal device receives broadcast information sent by the access network device, and the broadcast information is used to indicate the tracking area of the terminal device The determination method and TA setting parameters; the terminal device determines the TA corresponding to the location of the terminal device according to the location of the terminal device, the determination method, and the setting parameters.
  • the terminal device determining the TA corresponding to the location of the terminal device according to the location of the terminal device, the determination method, and the setting parameters includes: the terminal device according to The location of the terminal device, the determination method, the setting parameters, and the type of the terminal device determine the TA corresponding to the location of the terminal device, and the type is a fixed terminal device FT or a mobile terminal device MT.
  • the terminal device may configure different ranges of TA for different types of terminal devices, for example, the TA of the FT is smaller, and the TA of the MT is larger. In this way, paging resources can be allocated reasonably.
  • the terminal device determines the TA corresponding to the location of the terminal device according to the location of the terminal device, including: for at least part of the historical location of the terminal device and all For the location of the terminal device, the terminal device uses the minimum coverage circle algorithm to obtain the TA corresponding to the location of the terminal device.
  • the minimum covering circle algorithm is used to obtain the TA corresponding to the location of the terminal device, which is simple and easy to implement.
  • the first TA information includes the center and radius of the TA corresponding to the location of the terminal device, and the second TA information includes the center and radius of each TA in all TAs.
  • the TA indicated by the first TA information and the second TA information is a circle or a polygon.
  • the present application provides a method for determining a tracking area, the method includes: a core network device receives instruction information sent by a terminal device, the instruction information is used to indicate the location of the terminal device; the core network device Send first TA information to the terminal device, where the first TA information includes a TA corresponding to the location of the terminal device, and the TA is determined according to the location of the terminal device.
  • the foregoing technical solution manages the tracking area of the terminal device according to the location of the terminal device, so that it does not depend on the change of the cell ID of the terminal device. That is to say, the change of the cell ID of the terminal device is no longer used as the basis for judging the terminal device TA update, but the absolute position of the terminal device is used as the basis for judging the terminal device TA update, so that the terminal device can be determined in the NTN scenario. Tracking area.
  • the core network device receiving the instruction information sent by the terminal device includes: the core network device receives the location update request sent by the terminal device, and the location update request includes the instruction information .
  • the method further includes: when the minimum distance between the location of the terminal device and the range covered by all TAs indicated by the second TA information is greater than or equal to a preset threshold, the core network The device restarts the TA setting process for the terminal device.
  • the core network device can use the TA setting parameters to create a new terminal device TA. In this way, the problem of high paging cost caused by the excessively large tracking area of the terminal device can be avoided.
  • the first TA information includes the center and radius of the TA corresponding to the location of the terminal device, and the second TA information includes the center and radius of each TA in all TAs.
  • the TA indicated by the first TA information and the second TA information is a circle or a polygon.
  • the method further includes: the core network device determines one or more cells in the TA corresponding to the location of the terminal device; the core network device is in the one or more Paging in the small area.
  • the indication information includes the location of the terminal device, and the method further includes: the core network device determines the TA corresponding to the location of the terminal device according to the location of the terminal device. . In a possible implementation manner, the core network device determines the TA corresponding to the location of the terminal device according to the location of the terminal device, including: for at least part of the history of all historical locations reported by the terminal device The location and the location of the terminal device, the core network device uses the minimum coverage circle algorithm to obtain the TA corresponding to the location of the terminal device.
  • the minimum covering circle algorithm is used to obtain the TA corresponding to the location of the terminal device, which is simple and easy to implement.
  • the method further includes: the core network device receives the type of the terminal device sent by the terminal device, and the type is a fixed terminal device FT or a mobile terminal device MT; the core network The device determines the TA corresponding to the location of the terminal device according to the location of the terminal device and the type of the terminal device.
  • the core network device may configure different ranges of TAs for different types of terminal devices, for example, the TA of the FT is smaller and the TA of the MT is larger. In this way, paging resources can be allocated reasonably.
  • the present application provides a terminal device, including a module for executing the first aspect or any one of the implementation manners of the first aspect.
  • the present application provides a core network device, which includes a module for executing the second aspect or any one of the implementation manners of the second aspect.
  • this application provides a terminal device, including a transceiver, a processor, and a memory, configured to execute the method described in the first aspect or any one of the implementation manners of the first aspect.
  • the present application provides a core network device, including a transceiver, a processor, and a memory, for executing the method described in the second aspect or any one of the implementation manners of the second aspect.
  • the present application provides a chip, which is connected to a memory, and is used to read and execute a software program stored in the memory to implement the first aspect or any one of the implementation manners of the first aspect Methods.
  • the present application provides a chip, which is connected to a memory, and is used to read and execute a software program stored in the memory to implement the second aspect or any one of the implementation modes of the second aspect Methods.
  • the present application provides a computer-readable storage medium, including instructions, which when run on a terminal device, cause the terminal device to execute the method described in the first aspect or any one of the implementation manners of the first aspect.
  • this application provides a computer-readable storage medium, including instructions, which when run on a core network device, cause the core network device to execute the method described in the second aspect or any one of the implementation manners of the second aspect .
  • this application provides a computer program product that, when running on a terminal device, causes the terminal device to execute the method described in the first aspect or any one of the implementation manners of the first aspect.
  • the present application provides a computer program product that, when running on a core network device, causes the core network device to execute the method described in the second aspect or any one of the implementation manners of the second aspect.
  • Fig. 1 is a schematic diagram of a scenario where an embodiment of the present application can be applied.
  • Fig. 2 is a schematic diagram of another scenario where an embodiment of the present application can be applied.
  • FIG. 3 is a schematic flowchart of a method for determining a tracking area according to an embodiment of the present application.
  • Fig. 4 is a schematic diagram of an attachment process for determining a tracking area by a core network device.
  • Fig. 5 is a schematic diagram of a location update process for determining a tracking area by a core network device.
  • Fig. 6 is a schematic diagram of an attachment procedure for determining a tracking area by a terminal device.
  • Fig. 7 is a schematic diagram of a location update process for determining a tracking area by a terminal device.
  • Figure 8 is a schematic diagram of TA update when TA is circular.
  • Figure 9 is a schematic diagram of the minimum covering circle algorithm.
  • FIG. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a core network device according to an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a terminal device according to another embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of a core network device according to another embodiment of the present application.
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD LTE Time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX worldwide interoperability for microwave access
  • the terminal equipment in the embodiments of this application may refer to user equipment, access terminals, user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device.
  • the terminal device can also be a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (personal digital assistant, PDA), with wireless communication Functional handheld devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network or future evolution of the public land mobile network (PLMN) Terminal equipment, etc., this embodiment of the present application does not limit this.
  • PLMN public land mobile network
  • the core network equipment in the embodiments of this application may be equipment used to communicate with terminal equipment, and the network equipment may be a global system for mobile communications (GSM) system or code division multiple access (CDMA)
  • the base station (transceiver station, BTS) in) can also be the base station (NodeB, NB) in the wideband code division multiple access (WCDMA) system, or the evolved base station ( evolved NodeB, eNB or eNodeB), it can also be a wireless controller in the cloud radio access network (CRAN) scenario, or the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, and
  • the network equipment in the future 5G network or the network equipment in the future evolved PLMN network, etc., are not limited in the embodiment of the present application.
  • the core network device may be a mobile access management function (access and mobility management function, AMF) network element in the 5G communication system.
  • AMF mobile access management function
  • the terminal device or the network device 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 system, Unix operating system, Android operating system, iOS operating system, or windows operating system.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiments of the application do not specifically limit the specific structure of the execution subject of the methods provided in the embodiments of the application, as long as the program that records the codes of the methods provided in the embodiments of the application can be provided according to the embodiments of the application.
  • the execution subject of the method provided in 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 present application can 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.
  • 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 scenario where an embodiment of the present application can be applied.
  • the airborne platform carries the load with the functions of the entire access network equipment.
  • the terminal equipment and the access network equipment are connected through the air interface.
  • the airborne platform and the NTN gateway pass through the interface (for example, satellite radio interface). , SRI)) communication
  • the NTN gateway communicates with the core network device through an interface (for example, NG interface, etc.)
  • the core network device communicates with the data network through an interface (for example, N6 interface, etc.).
  • the access network equipment establishes a wireless feedback link through the terrestrial NTN gateway and the core network equipment.
  • Fig. 2 is a schematic diagram of another scenario where an embodiment of the present application can be applied.
  • the access network equipment adopts the centralized unit (CU)-distributed unit (DU) architecture
  • the DU is carried on the empty platform (that is, the empty platform carries The load is DU)
  • the CU is deployed on the ground.
  • the airborne platform and NTN gateway form a remote radio unit
  • the airborne platform, NTN gateway and CU on the ground form the next generation wireless access network.
  • the terminal equipment and the airborne platform are connected through an air interface, the airborne platform and the NTN gateway communicate through an interface (for example, SRI), and the CU and core network equipment communicate through an interface (for example, NG interface), and the core network equipment communicates with Data networks communicate through interfaces (for example, N6 interface).
  • the DU in the air establishes a wireless feedback link with the CU through the ground NTN gateway.
  • the airborne platform in Figures 1 and 2 can be an aerial platform with a determined orbit, for example, a satellite, unmanned aerial vehicle, hot air balloon, airplane, etc.; it can also be a ground platform with a determined orbit, for example, The bus, ship, etc. whose trajectory is determined are not limited in the embodiment of this application.
  • the NTN gateway is a transport network layer (TNL) node, which is used to realize the transparent transmission of data or signaling.
  • the NTN gateway can also be replaced with a receiving node or donor node with a fixed location.
  • FIG. 1 and FIG. 2 are only examples, and the technical solution of the embodiment of the present application can also be applied to other scenarios, as long as the tracking area of the terminal device needs to be determined in this scenario.
  • the NTN scenario when the airborne platform carries the entire access network equipment or part of the functional load of the access network equipment moving in the air, the cell of the access network equipment in the air will follow the movement and sweep the ground, from the perspective of the ground terminal equipment It can be seen that even if the terminal device is not moving, the covered cell is constantly changing. In this case, the geographic location and the cell no longer have a binding relationship, and the change of the cell ID of the slave terminal device can no longer be used as a judgment basis for the terminal device TA update. Therefore, in the NTN scenario, how to determine the tracking area of the terminal device has become an urgent problem to be solved.
  • the embodiments of the present application provide a method for determining the tracking area, which can implement the determination of the tracking area of the terminal device in the NTN scenario.
  • FIG. 3 is a schematic flowchart of a method for determining a tracking area according to an embodiment of the present application.
  • the method shown in FIG. 3 may include at least part of the following content.
  • the terminal device sends instruction information to the core network device, where the instruction information is used to indicate the location of the terminal device.
  • the location of the terminal device is used to determine the TA corresponding to the location of the terminal device.
  • the embodiment of the application does not specifically limit the type of terminal device, as long as the terminal device can determine its own location and communicate with the core network device.
  • the terminal device may be a terminal device with a positioning function.
  • the location of the terminal device may be information that can reflect the geographic location of the terminal device.
  • the location of the terminal device may be the geographic location where the terminal device is located (for example, latitude and longitude coordinates, etc.).
  • the location of the terminal device may be the TA corresponding to the geographic location of the terminal device, etc., that is, the location of the terminal device at this time may refer to the area or range where the terminal device is located, rather than the latitude and longitude coordinates of the terminal device.
  • the location of the terminal device in the embodiments of the present application is the geographic location of the terminal device (also referred to as an absolute location), for example, a geographic location obtained by a terminal device with a positioning function after positioning itself.
  • TA can be a circle, a polygon, an irregular figure, etc.
  • the specific representation of TA is related to the shape of TA.
  • TA when TA is a circle, TA can be represented by the center and radius, center and diameter, three different points on the circle, etc.; when TA is a polygon, TA can be represented by the side length, center, and diagonal of the polygon Line and center etc.
  • the terminal device receives the first tracking area TA information from the core network device, the first TA information includes the TA corresponding to the location of the terminal device, and the TA is determined according to the location of the terminal device.
  • the core network equipment may be an AMF network element in 5G, a mobility management entity (MME) in 4G, and so on.
  • MME mobility management entity
  • the core network device may send the first TA information by sending a location update response message.
  • the first TA information may include one TA or multiple TA sets.
  • the first TA information may be in the form of a TA list (TA list).
  • the terminal device and the core network device communicate through the load of the function of the access network device carried by the unloaded platform.
  • the terminal device sends the instruction information to the access network device functional load carried by the unloaded platform, and the access network device functional load carried by the unloaded platform transparently transmits the instruction information to the core network device; similarly, the core network device
  • the first TA information is sent to the access network equipment functional load carried by the airborne platform, and the access network equipment functional load carried by the airborne platform is then transparently transmitted to the terminal equipment.
  • the foregoing technical solution manages the tracking area of the terminal device according to the location of the terminal device, so that it does not depend on the change of the cell ID of the terminal device. That is to say, the change of the cell ID of the terminal device is no longer used as the basis for judging the terminal device TA update, but the absolute position of the terminal device is used as the basis for judging the terminal device TA update, so that the terminal device can be determined in the NTN scenario. Tracking area.
  • the terminal device may also send the indication information to the core network device only when the location of the terminal device exceeds the range covered by all TAs indicated by the second TA information.
  • the core network device After receiving the instruction information sent by the terminal device, the core network device updates the second TA information to form the first TA information, and sends it to the terminal device.
  • the second TA information may include one TA or a set of multiple TAs.
  • the second TA information may be in the form of a TA list (TA list).
  • the terminal device may periodically send the indication information.
  • the core network device determines the TA corresponding to the location of the terminal device, and determines whether the TA information corresponding to the location of the terminal device is in the second TA information. If it is determined that the TA corresponding to the location of the terminal device is in the second TA information, the core network device determines the second TA information as the first TA information and sends it to the terminal device, or the core network device does not send the first TA information; if Determine that the TA information corresponding to the location of the terminal device is not in the second TA information, and the core network device adds the TA information corresponding to the location of the terminal device to the second TA information to form the first TA information and send it to the terminal device .
  • the second TA information is the TA information currently used by the terminal device
  • the first TA information is the TA information after the TA update, which is the TA information used in the next judgment.
  • the terminal device can periodically determine the location of the terminal device.
  • the period can be pre-configured.
  • the period is variable, and as the terminal device moves away from the edge of the range covered by all TAs indicated by the second TA information, the period also becomes larger. For example, if location A is farther from the edge of the range covered by all TAs indicated by the second TA information than location B, the period for the terminal device to determine the location of the terminal device at location A is greater than that at location B. The period for the device to determine the location of the terminal device.
  • the terminal device can determine the location of the terminal device when it detects that the cell ID changes. That is to say, when the cell where it is located changes, the terminal device determines the location of the terminal device.
  • a terminal device determines the location of the terminal device, which is not specifically limited in the embodiment of the present application. For example, global positioning system (GPS) positioning, base station positioning, etc.
  • GPS global positioning system
  • the core network device restarts the TA configuration process for the terminal device.
  • the core network device can determine the difference between the location of the terminal device and the center of each TA indicated by the second TA information and the radius of the TA, when the difference is greater than
  • the core network device resets a TA according to the TA setting parameters, and restarts recording the location and TA of the terminal device; or the core network device can also compare the radius of the TA corresponding to the location of the terminal device with the preset maximum radius When the radius of the TA corresponding to the location of the terminal device is greater than the preset maximum radius, the core network device resets a TA according to the TA setting parameters, and restarts recording the location and TA of the terminal device.
  • the maximum tracking area is set for the terminal device. If the tracking area of the terminal device exceeds the maximum tracking area (for example, the terminal device roams, etc.), the core network device can reset a TA according to the setting parameters of the TA. In this way, the problem of high paging cost caused by the excessively large tracking area of the terminal device can be avoided.
  • the indication information sent by the terminal device to the core network device includes the location of the terminal device.
  • the core network device determines the TA corresponding to the location according to the location of the terminal device.
  • the terminal device sends a location update request to the core network device, and the location of the terminal device is carried in the location update request; after the core network device receives the location update request sent by the terminal device, it is based on the location carried in the location update request and the location update request.
  • the historical location of the terminal device, the TA corresponding to the location is determined, and the location sent by the terminal device this time and the TA corresponding to it are recorded.
  • the instruction information is carried in the attach request sent by the terminal device to the core network device.
  • the attachment request sent by the terminal device may also include the type of the terminal device, and the core network device determines the TA corresponding to the location of the terminal device according to the location of the terminal device and the type of the terminal device.
  • the type of terminal device can be a fixed terminal (FT) or a mobile terminal (MT).
  • the TA range of the FT type terminal device may be smaller than or equal to the TA range of the MT type terminal device.
  • the first TA of the terminal device in each attachment process may be the center of the circle where the terminal device is located.
  • the terminal device may also determine the method for determining the tracking area of the terminal device according to the broadcast information sent by the access network device.
  • adding a TA algorithm parameter to the broadcast information can indicate that the TA algorithm of the ground network is preferentially used by default or the TA algorithm based on the location of the terminal device is preferentially used by default.
  • the core network device determines one or more cells in the TA corresponding to the location, and when the terminal device needs to be paged, the core network device performs paging in the one or more cells. Understandably, in the NTN scenario, the core network device also needs to determine the cell of the access network device carried on the empty platform (for example, obtained by calculating the satellite beam).
  • the terminal device and the core network device communicate through the empty platform.
  • the terminal device sends an attachment request, location update request, etc. to the core network device through the access network device functional load carried by the airborne platform; similarly, the core network device responds to the attachment via the access network device functional load carried by the airborne platform , Location update response, paging message, etc. are sent to the terminal equipment.
  • Fig. 4 is a schematic diagram of an attachment process for determining a tracking area by a core network device.
  • Figure 4 takes TA as a circle as an example, and TA is expressed in the form of center and radius as an example.
  • the access network device system broadcasts and issues a way to notify the terminal device of determining the tracking area. For example, informing the terminal device to use a user-defined TA for location update (for terminal devices with positioning capabilities, you can choose to use a custom-defined TA method for location update).
  • the terminal device sends an attach request (attach request) to the core network device, and the attach request includes the location of the terminal device and the type of the terminal device.
  • the terminal device may add an access point position IE (access point position IE) to the attachment request to report the location of the terminal device.
  • the FT or MT information can also be added to the core network device in the attach request. In this way, the core network device can feed back the track radius (the smaller the FT radius, the larger the MT radius) according to the FT or MT attributes of the terminal device, and define the TA with the location of the terminal device as the center of the circle.
  • the access point location information element may include the latitude sign, degrees of latitude, degrees of longitude, direction of altitude, altitude, etc. of the terminal equipment.
  • the core network device may execute 430.
  • the core network device records the location of the terminal device and the radius of the TA.
  • the device sends an attachment response and feeds back the TA list.
  • the TA list includes the TA with the location of the terminal device as the center of the circle.
  • an expression form of TA can be added to the attachment response, that is, an access point location information element (used to indicate the center position of the TA) and tracking radius (used to indicate the tracking radius of the TA) are added.
  • the access point location information element may include the latitude symbol, latitude, longitude, height direction, height, etc. of the terminal device.
  • Fig. 5 is a schematic diagram of a location update process for determining a tracking area by a core network device.
  • Figure 5 also takes TA as a circle as an example, and TA is represented in the form of center and radius as an example.
  • the terminal device detects whether it has moved out of the TA range indicated by the second TA information. For example, the terminal device may periodically determine the location and determine whether the location is out of the range covered by the TA indicated by the second TA information.
  • the period is variable, and as the terminal device moves away from the edge of the range covered by all TAs indicated by the second TA information, the period also becomes larger. For example, if location A is farther from the edge of the range covered by all TAs indicated by the second TA information than location B, the period for the terminal device to determine the location of the terminal device at location A is greater than that at location B. The period for the device to determine the location of the terminal device.
  • the terminal device when it detects that it has moved out of the TA range indicated by the second TA information, it sends a location update request to the core network device to report the location of the terminal device for location update.
  • the terminal device may add an access point position IE (access point position IE) to the location update request to report the location of the terminal device.
  • the access point location information element may include the latitude symbol, latitude, longitude, height direction, height, etc. of the terminal device.
  • the core network device determines the TA corresponding to the location of the terminal device, and updates the TA list.
  • the core network device can also record the location of the terminal device.
  • the location of the terminal device can be used to determine the TA (for example, as input information for the minimum covering circle algorithm).
  • an expression form of TA may be added to the location update response, that is, an access point location information element (used to indicate the center position of the TA) and tracking radius (used to indicate the tracking radius of the TA) are added.
  • the access point location information element may include the latitude symbol, latitude, longitude, height direction, height, etc. of the terminal device.
  • the core network device sends a location update response to the terminal device, and the location update response includes a new TA list.
  • the core network device determines the access network device within the TA range corresponding to the location of the terminal device. Specifically, the core network device determines the access network device within the range according to the TA information maintained by itself. It should be understood that the access network equipment within the TA range includes an airborne platform that carries the functions of the access network equipment (for example, determined by calculating satellite beams) and the access network equipment set on the ground.
  • the user is paged within the TA range corresponding to the location of the terminal device.
  • the access network device determined in 550 sends a paging message to the terminal device.
  • the indication information sent by the terminal device to the core network device includes the TA corresponding to the location of the terminal device.
  • the terminal device determines the TA corresponding to the location according to the location of the terminal device.
  • the terminal device determines its location, and determines the TA corresponding to its location according to its location; when the location of the terminal device exceeds the range covered by the TA indicated by the second TA information, the terminal device reports to the core network
  • the device sends a location update request, and the TA corresponding to the location of the terminal device is carried in the location update request; the core network device updates the second TA information after receiving the location update request sent by the terminal device.
  • the TA corresponding to the location of the terminal device is carried in the attachment request sent by the terminal device to the core network device.
  • the terminal device may determine the TA corresponding to the location of the terminal device according to the location of the terminal device and the type of the terminal device.
  • the type of terminal device can be a fixed terminal (FT) or a mobile terminal (MT).
  • the TA range of the FT type terminal device may be smaller than or equal to the TA range of the MT type terminal device.
  • the first TA of the terminal device in each attachment process may be the center of the circle where the terminal device is located.
  • the terminal device may also determine the method of determining the tracking area of the terminal device and the setting parameters of the TA according to the broadcast information sent by the access network device.
  • adding a TA algorithm parameter to the broadcast information can indicate that the TA algorithm of the ground network is preferentially used by default or the TA algorithm based on the location of the terminal device is preferentially used by default.
  • the setting parameters of TA can be reference minimum radius, maximum radius, etc.
  • the core network device determines one or more cells in the TA corresponding to the location, and when the terminal device needs to be paged, the core network device performs paging in the one or more cells. Understandably, in the NTN scenario, the core network device also needs to determine the cell of the access network device carried on the airborne platform in the TA corresponding to the location of the terminal device (for example, obtained by calculating the satellite beam).
  • the terminal device and the core network device communicate through the empty platform.
  • the terminal device sends the attachment request, location update request, etc. to the core network device through the access network device function load carried by the empty platform; similarly, the core network device sends the attachment response and location update through the access network device function load carried The response, paging message, etc. are sent to the terminal device.
  • Fig. 6 is a schematic diagram of an attachment procedure for determining a tracking area by a terminal device.
  • Figure 6 also takes TA as a circle as an example, and TA is expressed in the form of center and radius as an example.
  • the access network device broadcasts and sends notifications to the terminal device of the determination method and radius of the tracking area (for example, the minimum reference radius). For example, informing the terminal device to use a user-defined TA for location update (for terminal devices with positioning capabilities, you can choose to use a custom-defined TA method for location update).
  • the terminal device can determine the tracking radius according to the FT or MT attributes of the terminal device (the FT radius is smaller, the MT radius is larger); the terminal device sends an attachment request to the core network device, and the attachment request includes the center and radius of the TA .
  • the terminal device may add an expression form of TA in the attach request, that is, add an access point location information element (used to indicate the center position of the TA) and tracking radius (used to indicate the tracking radius of the TA).
  • the access point location information element may include the latitude symbol, latitude, longitude, height direction, height, etc. of the terminal device.
  • the core network device may execute 630.
  • the core network device records the location of the terminal device and the radius of the TA.
  • the core network device sends an attachment response to the terminal device and feeds back the TA list.
  • the TA list includes TAs centered on the terminal device.
  • an expression form of TA can be added to the attachment response, that is, an access point location information element (used to indicate the center position of the TA) and tracking radius (used to indicate the tracking radius of the TA) are added.
  • the access point location information element may include the latitude symbol, latitude, longitude, height direction, height, etc. of the terminal device.
  • Fig. 7 is a schematic diagram of a location update process for determining a tracking area by a terminal device.
  • Figure 7 also takes TA as a circle as an example, and TA is represented in the form of center and radius as an example.
  • the terminal device detects whether it has moved out of the TA range indicated by the second TA information.
  • the terminal device when it detects that it has moved out of the TA range indicated by the second TA information, it sends a location update request to the core network device and reports the TA corresponding to the location of the terminal device for location update.
  • the terminal device may add an expression form of TA in the attach request, that is, add an access point location information element (used to indicate the center position of the TA) and tracking radius (used to indicate the tracking radius of the TA).
  • an access point location information element used to indicate the center position of the TA
  • tracking radius used to indicate the tracking radius of the TA
  • the access point location information element may include the latitude symbol, latitude, longitude, height direction, height, etc. of the terminal device.
  • the core network device updates the TA list.
  • the core network device may also record the location of the terminal device and the radius of the TA corresponding to the location of the terminal device.
  • the core network device sends a location update response to the terminal device, and the location update response includes a new TA list.
  • an expression form of TA may be added to the location update response, that is, an access point location information element (used to indicate the center position of the TA) and tracking radius (used to indicate the tracking radius of the TA) are added.
  • the access point location information element may include the latitude symbol, latitude, longitude, height direction, height, etc. of the terminal device.
  • the core network device determines the access network device within the TA range corresponding to the location of the terminal device. Specifically, the core network device determines the access network device within the range according to the TA information maintained by itself. It should be understood that the access network equipment within the TA range includes an airborne platform that carries the functions of the access network equipment (for example, determined by calculating satellite beams) and the access network equipment set on the ground.
  • the core network device executes 760, that is, when the core network device receives a paging message for the terminal device, execute 770.
  • user paging is performed within the TA range corresponding to the location of the terminal device.
  • the access network device determined in 550 sends a paging message to the terminal device.
  • TA methods for terminal equipment and core network equipment to determine the location of the terminal equipment. For example, the minimum covering circle algorithm is used.
  • a circular area with a current position P 1 of the terminal device as the center (PC 1 ) and a radius of R is used as the initial dynamic TA 1 of the terminal device.
  • the terminal device obtains the position periodically.
  • the distance between the location of the terminal device and the center of TA 1 exceeds the radius R, it is considered that the terminal device has moved out of the TA 1 area.
  • the terminal device reports a location update request and reports the new location P i , and the core network device new terminal location, location history, and other historical center, covering the smallest circle algorithm to determine a new tracking area TA 2, or the terminal device determines a new position P i corresponding to TA 2, and reported to the core network device.
  • Figure 9 is a schematic diagram of the minimum covering circle algorithm. As shown in Figure 9, the specific steps for determining TA 2 using the minimum covering circle algorithm are as follows:
  • step 4 it means that a new circle needs to be constructed. Obviously Pi must be on the boundary of the new circle. Simply, take P 1 P i as the diameter and get a C i for the time being;
  • the newly obtained C j may not contain all points from 1 to j.
  • P i , P j , and P k must be on the boundary of the updated circle.
  • this circle can cover all the historically reported motion trajectories of the terminal equipment, and on the basis of the current obtained R k , increase the guard band radius as the new tracking area of the terminal equipment TA 2 .
  • the core network equipment can set the maximum tracking range R max . If the TA tracking area exceeds R max (for example, roaming users), a new TA will be started; for terminal equipment, the terminal equipment can be based on the access network equipment The R max in the broadcast information sent limits the range of TA 2 .
  • FIG. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • the terminal device 1000 in FIG. 10 may correspond to the above terminal device.
  • the terminal device 1000 includes a receiving module 1010 and a sending module 1020.
  • the sending module 1020 is configured to send instruction information to the core network device, where the instruction information is used to indicate the location of the terminal device.
  • the receiving module 1010 is configured to receive first tracking area TA information from the core network device.
  • the first TA information includes the TA corresponding to the location of the terminal device 1000, and the TA is determined according to the location of the terminal device 1000.
  • the sending module 1020 is specifically configured to send the indication information to the core network device when the location of the terminal device 1000 exceeds the range covered by all TAs indicated by the second TA information, and the second TA The information is TA information currently used by the terminal device 1000.
  • the sending module 1020 is specifically configured to send a location update request to the core network device, where the location update request includes the indication information.
  • the indication information includes the location of the terminal device 1000; the receiving module 1010 is also used to receive broadcast information sent by the access network device, and the broadcast information is used to indicate a method for determining the TA of the terminal device 1000.
  • the sending module 1020 is further configured to send the type of the terminal device 1000 to the core network device, and the type is a fixed terminal device FT or a mobile terminal device MT.
  • the indication information includes the TA corresponding to the location of the terminal device 1000; the terminal device 1000 further includes:
  • the processing module 1030 is configured to determine the TA corresponding to the location of the terminal device 1000 according to the location of the terminal device 1000 before the terminal device 1000 sends the instruction information to the core network device.
  • the receiving module 1010 is further configured to: receive broadcast information sent by the access network device, where the broadcast information is used to indicate the method of determining the tracking area of the terminal device 1000 and the setting parameters of the TA; the processing module 1030 also It is used to determine the TA corresponding to the location of the terminal device 1000 according to the location of the terminal device 1000, the determination method, and the setting parameters.
  • the processing module 1030 is specifically configured to determine the TA corresponding to the location of the terminal device 1000 according to the location of the terminal device 1000, the determination method, the setting parameters, and the type of the terminal device 1000, and the type is fixed Terminal equipment FT or mobile terminal equipment MT.
  • the processing module 1030 is specifically configured to: for at least part of the historical positions of the terminal device 1000 and the location of the terminal device 1000, use a minimum coverage circle algorithm to obtain the TA corresponding to the location of the terminal device 1000.
  • the first TA information includes the center and radius of the TA corresponding to the location of the terminal device 1000, and the second TA information includes the center and radius of each TA in all TAs.
  • the TA indicated by the first TA information and the second TA information is a circle or a polygon.
  • the receiving module 1010 and the sending module 1020 can be implemented by a transceiver.
  • the processing module 1030 may be implemented by a processor. The specific functions and beneficial effects of the receiving module 1010, the sending module 1020, and the processing module 1030 can be referred to the method shown in FIG. 3, which will not be repeated here.
  • FIG. 11 is a schematic structural diagram of a core network device according to an embodiment of the present application.
  • the core network device 1100 in FIG. 11 may correspond to the above core network device.
  • the core network device 1100 includes a receiving module 1110 and a sending module 1120.
  • the receiving module 1110 is configured to receive instruction information sent by a terminal device, where the instruction information is used to indicate the location of the terminal device.
  • the sending module 1120 is configured to send first TA information to the terminal device.
  • the first TA information includes the TA corresponding to the location of the terminal device, and the TA is determined according to the location of the terminal device.
  • the receiving module 1110 is specifically configured to: receive a location update request sent by the terminal device, where the location update request includes the indication information.
  • the core network device 1100 further includes: a processing module 1130, configured to restart when the minimum distance between the location of the terminal device and the range covered by all TAs indicated by the second TA information is greater than or equal to a preset threshold TA configuration process for this terminal device.
  • a processing module 1130 configured to restart when the minimum distance between the location of the terminal device and the range covered by all TAs indicated by the second TA information is greater than or equal to a preset threshold TA configuration process for this terminal device.
  • the first TA information includes the center and radius of the TA corresponding to the location of the terminal device, and the second TA information includes the center and radius of each TA in all TAs.
  • the TA indicated by the first TA information and the second TA information is a circle or a polygon.
  • the processing module 1130 is further configured to: determine one or more cells in the TA corresponding to the location of the terminal device; and to perform paging in the one or more cells.
  • the indication information includes the location of the terminal device; the processing module 1130 is further configured to determine the TA corresponding to the location of the terminal device according to the location of the terminal device.
  • the processing module 1130 is specifically configured to obtain the TA corresponding to the location of the terminal device by using the minimum coverage circle algorithm for at least part of the historical locations reported by the terminal device and the location of the terminal device.
  • the receiving module 1110 is also used to: receive the type of the terminal device sent by the terminal device, the type being a fixed terminal device FT or a mobile terminal device MT; the processing module 1130 is also used to determine the location of the terminal device And the type of the terminal device, determine the TA corresponding to the location of the terminal device.
  • the receiving module 1110 and the sending module 1120 may be implemented by a transceiver.
  • the processing module 1130 may be implemented by a processor. The specific functions and beneficial effects of the receiving module 1110, the sending module 1120, and the processing module 1130 can be referred to the method shown in FIG. 3, which will not be repeated here.
  • FIG. 12 is a schematic structural diagram of a terminal device according to another embodiment of the present application.
  • the terminal device 1200 in FIG. 12 may correspond to the above terminal device.
  • the terminal device 1200 includes a transceiver 1210, a processor 1220, and a memory 1230.
  • the memory may also be referred to as a storage medium or storage device.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.
  • the transceiver 1210, the processor 1220, and the memory 1230 communicate with each other through internal connection paths, and transfer control and/or data signals.
  • the transceiver 1210 is configured to send indication information to a core network device, where the indication information is used to indicate the location of the terminal device; and receive first tracking area TA information from the core network device, where the first TA information includes the The TA corresponding to the location of the terminal device is determined according to the location of the terminal device.
  • FIG. 13 is a schematic structural diagram of a core network device according to another embodiment of the present application.
  • the core network device 1300 in FIG. 13 may correspond to the above core network device.
  • the core network device 1300 includes a transceiver 1310, a processor 1320, and a memory 1330.
  • the memory may also be referred to as a storage medium or storage device.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.
  • the transceiver 1310, the processor 1320, and the memory 1330 communicate with each other through internal connection paths, and transfer control and/or data signals.
  • the transceiver 1310 is configured to receive instruction information sent by a terminal device, where the instruction information is used to indicate the location of the terminal device; and send first TA information to the terminal device, where the first TA information includes the location of the terminal device Corresponding TA, the TA is determined according to the location of the terminal device.
  • the transceiver in each embodiment of the present application may also be referred to as a transceiver unit, transceiver, transceiver, and so on.
  • the processor may also be called a processing unit, a processing board, a processing module, a processing device, and so on.
  • the device for implementing the receiving function in the transceiver can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver as the sending unit, that is, the transceiver includes the receiving unit and the sending unit.
  • the receiving unit may sometimes be called a receiver, receiver, or receiving circuit.
  • the transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
  • the memory described in each embodiment of the present application is used to store computer instructions and parameters required for the operation of the processor.
  • the processor described in each embodiment of the present application may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the above method can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the processor described in each embodiment of the present application may be 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, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in random access memory (RAM), flash memory, read-only memory (read-only memory, ROM), programmable read-only memory, or electrically erasable programmable memory, registers, etc. mature in the field Storage medium.
  • the storage medium is located in the memory, and the processor reads the instructions in the memory and completes the steps of the above method in combination with its hardware.
  • the size of the sequence number of each process does not mean the order of execution.
  • the execution order of each process should be determined by its function and internal logic, and should not constitute the implementation process of the embodiments of this application. Any restrictions.
  • 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, and 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 method described in each embodiment 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

本申请提供了确定跟踪区域的方法、终端设备和核心网设备。该方法包括：终端设备向核心网设备发送指示信息，该指示信息用于指示该终端设备的位置；该终端设备接收来自该核心网设备的第一TA信息，该第一TA信息包括该终端设备所在位置对应的TA，该TA是根据该终端设备的位置确定的。上述技术方案根据终端设备的位置，对终端设备的跟踪区域进行管理，这样可以不依赖于终端设备的小区ID的变化。也就是说，不再以终端设备的小区ID变化为终端设备TA更新的判断依据，而是以终端设备的绝对位置为终端设备TA更新的判断依据，从而可以实现在NTN场景中确定终端设备的跟踪区域。

Description

确定跟踪区域的方法、终端设备和核心网设备
本申请要求于2019年02月15日提交中国专利局、申请号为201910118064.4、申请名称为“确定跟踪区域的方法、终端设备和核心网设备”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，并且更具体地涉及确定跟踪区域的方法、终端设备和核心网设备。
背景技术
移动网络采用跟踪区域(tracking area，TA)来追踪终端设备的位置，对终端设备进行位置管理和寻呼。在地面网络规划中，TA和地理位置绑定，因为地面网络设备一旦部署以后，位置是固定的，因此通常一个TA就是数个网络设备小区的集合，TA范围内的所有小区都将对终端设备广播相同的跟踪区域码(tracking area code，TAC)。当终端设备离开了这个TA以后，将会收到其他TA小区的广播信息。当终端设备接收到不同于TA列表中所有TAC(由网络设备配置给终端设备)的TAC后，将会向网络设备发起跟踪区域更新(tracking area update，TAU)请求，通知网络设备，终端设备已经变更位置，进入到新的TA区域。此时网络设备将会更新TA列表，将新的TA增加到TA列表当中，并通知终端设备。当有用户的寻呼需求时，网络设备通过TA列表，在TA列表中所有TA内的小区下发寻呼消息，寻找终端设备。
但是在非陆地网络(non terrestrial networks，NTN)场景中，当空载平台(例如、卫星等)携带整个接入网设备或者接入网设备的部分功能载荷(例如，分布式单元(distributed unit，DU))在空中移动时，空中的接入网设备的小区将跟随移动扫过地面，从地面终端设备的角度来看，即使终端设备不移动，覆盖的小区也是在不断变化的。这种情况下地理位置和小区不再有绑定关系，从终端设备的小区ID变化已经不能作为终端设备TA更新的判断依据。
因此，在NTN场景中，如何确定终端设备的跟踪区域成为亟需解决的问题。
发明内容
本申请提供确定跟踪区域的方法、终端设备和核心网设备，能够在NTN场景中确定终端设备的跟踪区域。
第一方面，本申请提供了一种确定跟踪区域的方法，该方法包括：终端设备向核心网设备发送指示信息，所述指示信息用于指示所述终端设备的位置；所述终端设备接收来自所述核心网设备的第一TA信息，所述第一TA信息包括所述终端设备所在位置对应的TA，所述TA是根据所述终端设备的位置确定的。
上述技术方案根据终端设备所在位置，对终端设备的跟踪区域进行管理，这样可以不依赖于终端设备的小区ID的变化。也就是说，不再以终端设备的小区ID变化为终端设备TA更新的判断依据，而是以终端设备的绝对位置为终端设备TA更新的判断依据，从而可以实现在NTN场景中确定终端设备的跟踪区域。
在一种可能的实现方式中，所述终端设备向核心网设备发送指示信息，包括：在所述终端设备所在位置超出第二TA信息指示的全部TA所覆盖的范围的情况下，所述终端设备向所述核心网设备发送所述指示信息，所述第二TA信息为所述终端设备当前所使用的TA信息。
在上述技术方案中，在终端设备超出原有TA信息指示的全部TA所覆盖的范围的情况下，终端设备才发起位置更新，可以避免频繁的发送指示信息。
在一种可能的实现方式中，所述终端设备向核心网设备发送所述指示信息，包括：所述终端设备向所述核心网设备发送位置更新请求，所述位置更新请求包括所述指示信息。
在上述技术方案中，通过复用位置更新请求的方式，发送指示信息，可以减少终端设备与核心网设备的信令交互，且易于实现。
在一种可能的实现方式中，所述指示信息包括所述终端设备所在位置，所述方法还包括：所述终端设备接收接入网设备发送的广播信息，所述广播信息用于指示所述终端设备的TA的确定方式。
在上述技术方案中，终端设备通过广播消息确定跟踪区域的确定方式，这样可以针对不同的场景，采用不同的跟踪区域确定方式，使得确定的跟踪区域更加准确。
在一种可能的实现方式中，所述方法还包括：所述终端设备向所述核心网设备发送所述终端设备的类型，所述类型为固定终端设备FT或移动终端设备MT。
在上述技术方案中，核心网设备可以为不同类型的终端设备配置不同范围的TA，例如FT的TA较小，MT的TA较大。这样，可以合理分配寻呼资源。
在一种可能的实现方式中，所述指示信息包括所述终端设备所在位置对应的TA；在所述终端设备向所述核心网设备发送所述指示信息之前，所述方法还包括：所述终端设备根据所述终端设备所在位置，确定所述终端设备所在位置对应的TA。
在上述技术方案中，由终端设备确定终端设备所在位置的TA。由于终端设备明确知道自己所在位置，因此可以更准确的确定TA的范围。
在一种可能的实现方式中，所述方法还包括：所述方法还包括：所述终端设备接收接入网设备发送的广播信息，所述广播信息用于指示所述终端设备的跟踪区域的确定方式和TA的设置参数；所述终端设备根据所述终端设备所在位置、所述确定方式和所述设置参数，确定所述终端设备所在位置所对应的TA。
在一种可能的实现方式中，所述终端设备根据所述终端设备所在位置、所述确定方式和所述设置参数，确定所述终端设备所在的位置对应的TA，包括：所述终端设备根据所述终端设备所在位置、所述确定方式、所述设置参数和所述终端设备的类型，确定所述终端设备所在位置对应的TA，所述类型为固定终端设备FT或移动终端设备MT。
在上述技术方案中，终端设备可以为不同类型的终端设备配置不同范围的TA，例如FT的TA较小，MT的TA较大。这样，可以合理分配寻呼资源。
在一种可能的实现方式中，所述终端设备根据所述终端设备所在位置，确定所述终端 设备所在位置对应的TA，包括：针对所述终端设备的历史位置中的至少部分历史位置以及所述终端设备所在位置，所述终端设备使用最小覆盖圆算法得到所述终端设备所在位置对应的TA。
在上述技术方案中，使用最小覆盖圆算法得到终端设备所在位置对应的TA，简单易于实现。
在一种可能的实现方式中，所述第一TA信息包括所述终端设备所在位置对应的TA的中心和半径，所述第二TA信息包括所述全部TA中每一个TA的中心和半径。
在一种可能的实现方式中，所述第一TA信息和所述第二TA信息所指示的TA为圆形或多边形。
第二方面，本申请提供了一种确定跟踪区域的方法，该方法包括：核心网设备接收终端设备发送的指示信息，所述指示信息用于指示所述终端设备的位置；所述核心网设备向所述终端设备发送第一TA信息，所述第一TA信息包括所述终端设备所在位置对应的TA，所述TA是根据所述终端设备的位置确定的。
上述技术方案根据终端设备所在位置，对终端设备的跟踪区域进行管理，这样可以不依赖于终端设备的小区ID的变化。也就是说，不再以终端设备的小区ID变化为终端设备TA更新的判断依据，而是以终端设备的绝对位置为终端设备TA更新的判断依据，从而可以实现在NTN场景中确定终端设备的跟踪区域。
在一种可能的实现方式中，所述核心网设备接收终端设备发送的指示信息，包括：所述核心网设备接收所述终端设备发送的位置更新请求，所述位置更新请求包括所述指示信息。
在上述技术方案中，通过复用位置更新请求的方式，发送指示信息，可以减少终端设备与核心网设备的信令交互，且易于实现。
在一种可能的实现方式中，所述方法还包括：在所述终端设备所在位置与第二TA信息指示的全部TA所覆盖的范围的最小距离大于或者等于预设阈值时，所述核心网设备重新启动对所述终端设备的TA设置流程。
也就是说，为终端设备设置最大跟踪区域，如果终端设备的跟踪区域超出最大跟踪区域时(例如，终端设备发生漫游等)，核心网设备可以采用TA的设置参数为终端设备另起一个新的TA。这样可以避免终端设备的跟踪区域过大而造成的寻呼代价过高的问题。
在一种可能的实现方式中，所述第一TA信息包括所述终端设备所在位置对应的TA的中心和半径，所述第二TA信息包括所述全部TA中每一个TA的中心和半径。
在一种可能的实现方式中，所述第一TA信息和所述第二TA信息所指示的TA为圆形或多边形。
在一种可能的实现方式中，所述方法还包括：所述核心网设备确定所述终端设备所在位置对应的TA中的一个或多个小区；所述核心网设备在所述一个或多个小区内进行寻呼。
在一种可能的实现方式中，所述指示信息包括所述终端设备所在位置，所述方法还包括：所述核心网设备根据所述终端设备所在位置，确定所述终端设备所在位置对应的TA。在一种可能的实现方式中，所述核心网设备根据所述终端设备所在位置，确定所述终端设备所在位置对应的TA，包括：针对所述终端设备上报的全部历史位置中的至少部分历史位置以及所述终端设备所在位置，所述核心网设备使用最小覆盖圆算法得到所述终端设备 所在位置对应的TA。
在上述技术方案中，使用最小覆盖圆算法得到终端设备所在位置对应的TA，简单易于实现。
在一种可能的实现方式中，所述方法还包括：所述核心网设备接收终端设备发送的所述终端设备的类型，所述类型为固定终端设备FT或移动终端设备MT；所述核心网设备根据所述终端设备所在位置和所述终端设备的类型，确定所述终端设备所在位置对应的TA。
在上述技术方案中，核心网设备可以为不同类型的终端设备配置不同范围的TA，例如FT的TA较小，MT的TA较大。这样，可以合理分配寻呼资源。
第三方面，本申请提供了一种终端设备，包括用于执行第一方面或第一方面任意一种实现方式中的模块。
第四方面，本申请提供了一种核心网设备，包括用于执行第二方面或第二方面任意一种实现方式中的模块。
第五方面，本申请提供了一种终端设备，包括收发器、处理器和存储器，用于执行第一方面或第一方面任意一种实现方式所述的方法。
第六方面，本申请提供了一种核心网设备，包括收发器、处理器和存储器，用于执行第二方面或第二方面任意一种实现方式所述的方法。
第七方面，本申请提供了一种芯片，所述芯片与存储器相连，用于读取并执行所述存储器中存储的软件程序，以实现第一方面或第一方面任意一种实现方式所述的方法。
第八方面，本申请提供了一种芯片，所述芯片与存储器相连，用于读取并执行所述存储器中存储的软件程序，以实现第二方面或第二方面任意一种实现方式所述的方法。
第九方面，本申请提供了一种计算机可读存储介质，包括指令，当其在终端设备上运行时，使得终端设备执行第一方面或第一方面任意一种实现方式所述的方法。
第十方面，本申请提供了一种计算机可读存储介质，包括指令，当其在核心网设备上运行时，使得核心网设备执行第二方面或第二方面任意一种实现方式所述的方法。
第十一方面，本申请提供了一种计算机程序产品，当其在终端设备上运行时，使得终端设备执行第一方面或第一方面任意一种实现方式所述的方法。
第十二方面，本申请提供了一种计算机程序产品，当其在核心网设备上运行时，使得核心网设备执行第二方面或第二方面任意一种实现方式所述的方法。
附图说明
图1是可以应用本申请实施例的场景的示意图。
图2是可以应用本申请实施例的另一场景的示意图。
图3是本申请实施例的确定跟踪区域的方法的示意性流程图。
图4是由核心网设备确定跟踪区域的附着流程的示意图。
图5是由核心网设备确定跟踪区域的位置更新流程的示意图。
图6是由终端设备确定跟踪区域的附着流程的示意图。
图7是由终端设备确定跟踪区域的位置更新流程的示意图。
图8是TA为圆形时TA更新的示意图。
图9是最小覆盖圆算法的示意图。
图10是本申请实施例的终端设备的示意性结构图。
图11是本申请实施例的核心网设备的示意性结构图。
图12是本申请另一实施例的终端设备的示意性结构图。
图13是本申请另一实施例的核心网设备的示意性结构图。
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。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通信(global system for mobile communications，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。
本申请实施例中的终端设备可以指用户设备、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、终端、无线通信设备、用户代理或用户装置。终端设备还可以是蜂窝电话、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、个人数字助理(personal digital assistant，PDA)、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处理设备、车载设备、可穿戴设备，未来5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等，本申请实施例对此并不限定。
本申请实施例中的核心网设备可以是用于与终端设备通信的设备，该网络设备可以是全球移动通信(global system for mobile communications，GSM)系统或码分多址(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LTE系统中的演进型基站(evolved NodeB，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，本申请实施例并不限定。可选地，核心网设备可以是5G通信系统中的移动接入管理功能(access and mobility management function，AMF)网元。
在本申请实施例中，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、即时通信软件等应用。并且，本申请实施例并未对本申请实施例提供的方法的执行主体的具体结构特别限定，只要能够通过运行记录有本申请实施例的提供的方法的代码的程序，以根据本申请实施例提供的方法进行通信即可，例如，本申请实施例提供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。
另外，本申请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是可以应用本申请实施例的场景的示意图。如图1所示，空载平台携带具备整个接入网设备功能的载荷，终端设备与接入网设备通过空口连接，空载平台与和NTN网关通过接口(例如，卫星无线接口(satellite radio interface，SRI))通信，NTN网关与核心网设备通过接口(例如，NG接口等)通信，核心网设备与数据网络之间通过接口(例如，N6接口等)通信。这样，接入网设备通过地面NTN网关和核心网设备建立无线反馈链路。
图2是可以应用本申请实施例的另一场景的示意图。如图2所示，当接入网设备采用集中式单元(centralized unit，CU)-分布式单元(distributed unit，DU)的架构时，DU被携带在空载平台上(也即空载平台携带的载荷为DU)，CU被部署在地面上。空载平台和NTN网关之间组成射频拉远单元，空载平台、NTN网关以及地面上的CU构成下一代无线接入网络。终端设备和空载平台之间通过空口连接，空载平台和NTN网关之间通过接口(例如，SRI)通信，CU和核心网设备之间通过接口(例如，NG接口)通信，核心网设备与数据网络之间通过接口(例如，N6接口)通信。这样，空中的DU通过地面NTN网关和CU建立无线反馈链路。
需要说明的是，图1和图2中的空载平台可以是运行轨道确定的空中平台，例如，卫星、无人机、热气球、飞机等；也可以是运行轨道确定的地面平台，例如，轨迹确定的公交车、轮船等，本申请实施例不做限定。NTN网关是一个传输网络层(transport Network layer，TNL)的节点，用于实现数据或者信令的透传，NTN网关也可以被替换为位置固定的接收节点或donor node。
应理解，图1和图2仅为示例，本申请实施例的技术方案还可以应用于其他场景，只要在该场景下，需要确定终端设备的跟踪区域。
在NTN场景中，当空载平台携带整个接入网设备或者接入网设备的部分功能载荷在空中移动时，空中的接入网设备的小区将跟随移动扫过地面，从地面终端设备的角度来看，即使终端设备不移动，覆盖的小区也是在不断变化的。这种情况下地理位置和小区不再有绑定关系，从终端设备的小区ID变化已经不能作为终端设备TA更新的判断依据。因此，在NTN场景中，如何确定终端设备的跟踪区域成为亟需解决的问题。
针对上述问题，本申请实施例提供了确定跟踪区域的方法，能够实现在NTN场景中 确定终端设备的跟踪区域。
图3是本申请实施例的确定跟踪区域的方法的示意性流程图。图3所示的方法可以包括以下内容的至少部分内容。
在310中，终端设备向核心网设备发送指示信息，该指示信息用于指示该终端设备的位置。该终端设备所在位置用于确定该终端设备所在位置对应的TA。
本申请实施例对终端设备的类型不作具体限定，只要该终端设备能够确定自己的位置，并与核心网设备进行通信即可。例如，终端设备可以是具有定位功能的终端设备。
终端设备的位置可以是能够体现终端设备的地理位置的信息。作为一个示例，终端设备的位置可以是终端设备所在的地理位置(例如，经纬度坐标等)。作为另一个示例，终端设备的位置可以是终端设备所在地理位置对应的TA等，也就是说，此时终端设备的位置可以指终端设备所在的区域或范围，而非终端设备所在的经纬度坐标。
应理解，本申请实施例中的终端设备所在位置为终端设备的地理位置(也称绝对位置)，例如，具有定位功能的终端设备对自身进行定位后得到的地理位置。
本申请实施例对TA的形状不做具体限定。例如，TA可以是圆形、多边形、不规则图形等。
TA的具体表示形式与TA的形状有关。例如，当TA为圆形时，TA可以用圆心和半径、圆心和直径、在圆上的三个不同的点等表示；当TA为多边形时，TA可以用多边形的边长和中心、对角线和中心等表示。
在320中，该终端设备接收来自该核心网设备的第一跟踪区域TA信息，该第一TA信息包括该终端设备所在位置对应的TA，该TA是根据该终端设备的位置确定的。
本申请实施例对核心网设备的类型不作具体限定，只要该核心网设备能够与终端设备进行通信，并对终端设备进行位置管理即可。例如，核心网设备可以是5G中的AMF网元、4G中的移动性管理实体(mobility management entity，MME)等。
核心网设备可以通过发送位置更新响应消息发送第一TA信息。第一TA信息可以包括一个TA或多个TA集合。例如，第一TA信息可以是TA列表(TA list)的形式。
可以理解地，当终端设备在空载平台携带的具有接入网设备功能的载荷的服务范围内时，终端设备与核心网设备通过空载平台携带的接入网设备功能的载荷进行通信。具体地，终端设备将指示信息发送给空载平台携带的接入网设备功能载荷，空载平台携带的接入网设备功能载荷对该指示信息透传给核心网设备；同样，核心网设备将第一TA信息发送给空载平台携带的接入网设备功能载荷，空载平台携带的接入网设备功能载荷再透传给终端设备。
上述技术方案根据终端设备所在位置，对终端设备的跟踪区域进行管理，这样可以不依赖于终端设备的小区ID的变化。也就是说，不再以终端设备的小区ID变化为终端设备TA更新的判断依据，而是以终端设备的绝对位置为终端设备TA更新的判断依据，从而可以实现在NTN场景中确定终端设备的跟踪区域。
在一些实施例中，终端设备也可以仅在终端设备的位置超出第二TA信息指示的全部TA所覆盖的范围时，向核心网设备发送指示信息。核心网设备接收到终端设备发送指示信息后，对第二TA信息进行更新，形成第一TA信息，并发送给终端设备。第二TA信息可以包括一个TA或多个TA的集合。例如，第二TA信息可以是TA列表(TA list)的 形式。
在另一些实施例中，终端设备可以周期性的发送指示信息。
可选地，核心网设备接收到终端设备发送的指示信息后，确定该终端设备所在位置对应的TA，并判断该终端设备所在位置对应的TA的信息是否在第二TA信息中。如果判断该终端设备所在位置对应的TA在第二TA信息中，核心网设备将第二TA信息确定为第一TA信息，并发送给终端设备，或者核心网设备不发送第一TA信息；如果判断该终端设备所在位置对应的TA的信息不在第二TA信息中，核心网设备在第二TA信息中增加该终端设备所在位置对应的TA的信息，形成第一TA信息，并发送给终端设备。
可以理解地，第二TA信息为终端设备当前使用的TA信息，而第一TA信息为进行TA更新之后的TA信息，是在下一次判断使用的TA信息。
本申请实施例中触发终端设备确定该终端设备所在位置的方式有很多。
作为一个示例，终端设备可以周期性的确定该终端设备所在位置。
可选地，该周期可以是预配置的。
可选地，该周期可变，且随着终端设备远离第二TA信息指示的全部TA所覆盖的范围的边缘时，周期也随之变大。例如，位置A相较于位置B距离第二TA信息指示的全部TA所覆盖的范围的边缘较远，则在位置A时终端设备确定该终端设备的所在位置的周期，大于在位置B时终端设备确定该终端设备的所在位置的周期。
作为另一个示例，终端设备可以在检测到小区ID发生变化的情况下，确定该终端设备的所在位置。也就是说，在所处小区发生变化时，终端设备确定该终端设备所在的位置。
终端设备确定该终端设备的位置的方法有很多，本申请实施例不作具体限定。例如，全球定位系统(global positioning system，GPS)定位、基站定位等。
在一些实施例中，在终端设备所在位置与第二TA信息指示的全部TA所覆盖的范围的最小距离大于或者等于预设阈值时，核心网设备重新启动对终端设备的TA配置流程。
以TA为圆形为例，核心网设备可以判断终端设备所在位置与第二TA信息指示的全部TA中的每一个TA的圆心的距离与该TA的半径的差值，当所得差值均大于预设阈值时，核心网设备根据TA设置参数重新设置一个TA，重新开始记录终端设备的位置和TA；或者核心网设备还可以将终端设备所在位置对应的TA的半径与预设的最大半径比较，当终端设备所在位置对应的TA的半径大于预设的最大半径时，核心网设备根据TA设置参数重新设置一个TA，重新开始记录终端设备的位置和TA。
也就是说，为终端设备设置最大跟踪区域，如果终端设备的跟踪区域超出最大跟踪区域时(例如，终端设备发生漫游等)，核心网设备可以根据TA的设置参数重新设置一个TA。这样可以避免终端设备的跟踪区域过大而造成的寻呼代价过高的问题。
在一些实施例中，终端设备向核心网设备发送的指示信息包括该终端设备所在位置。在此情况下，是由核心网设备根据该终端设备所在的位置，确定与该位置对应的TA。
具体地，终端设备向核心网设备发送位置更新请求，该终端设备所在位置携带在位置更新请求中；核心网设备接收到终端设备发送的位置更新请求后，根据位置更新请求中携带的位置以及该终端设备的历史位置，确定该位置对应的TA，并记录本次终端设备发送的位置和与之对应的TA。
可选地，在终端设备附着过程中，指示信息携带在终端设备向核心网设备发送的附着 请求中。可选地，终端设备发送的附着请求中还可以终端设备的类型，核心网设备根据终端设备所在位置和终端设备的类型，确定终端设备所在位置对应的TA。
终端设备的类型可以是固定终端设备(fixed terminal，FT)或移动终端设备(mobile terminal，MT)。FT类型的终端设备的TA的范围可以小于或者等于MT类型的终端设备的TA的范围。
可选地，终端设备在每次附着过程中的第一个TA可以终端设备所在的位置为圆心。
可选地，在开始附着流程之前，终端设备还可以根据接入网设备发送的广播信息，确定终端设备的跟踪区域的确定方式。
例如，在广播信息中增加TA算法参数，使用该TA算法参数可以指示默认优先使用地面网络的TA算法或者默认优先使用基于终端设备所在位置的TA算法等。
可选地，核心网设备确定该位置所对应的TA中的一个或多个小区，当需要寻呼该终端设备时，核心网设备在该一个或多个小区内进行寻呼。可以理解地，在NTN场景下，核心网设备还需要确定携带在空载平台上的接入网设备的小区(例如，通过计算卫星波束得到)。
可以理解地，当终端设备在空载平台携带的具有接入网设备功能的载荷的服务范围内时，终端设备与核心网设备通过空载平台进行通信。例如，终端设备通过空载平台携带的接入网设备功能载荷将附着请求、位置更新请求等发送给核心网设备；同样，核心网设备通过空载平台携带的接入网设备功能载荷将附着响应、位置更新响应、寻呼消息等发给终端设备。
图4是由核心网设备确定跟踪区域的附着流程的示意图。图4以TA为圆形为例，TA的表示形式为圆心和半径为例。
如图4所示，在410中，接入网设备系统广播下发通知终端设备跟踪区域的确定的方式。例如，通知终端设备使用用户自定义TA来进行位置更新(对于具备定位能力的终端设备，可以选择使用自定义确定TA方式进行位置更新)。
在420中，终端设备向核心网设备发送附着请求(attach request)，附着请求中包括终端设备所在位置和终端设备的类型。可选地，终端设备可以在附着请求中增加接入点位置信元(access point position IE)，上报终端设备所在位置。附着请求中还可以增加FT或者MT信息给核心网设备。这样，核心网设备可以根据终端设备的FT或者MT属性，反馈跟踪半径(track radius)(FT半径较小，MT半径较大)，定义以终端设备所在位置为圆心的TA。
接入点位置信元可以包括终端设备的纬度符号(latitude sign)、纬度(degrees of latitude)、经度(degrees of longitude)、高度方向(direction of altitude)、高度(altitude)等。
可选地，在420之后，核心网设备可以执行430，在430中，核心网设备记录终端设备所在位置和TA的半径。
在440中，核心网设备向终端
设备发送附着响应，反馈TA列表。该TA列表中包括以终端设备所在位置为圆心的TA。可选地，附着响应中可以增加TA的表达形式，即增加接入点位置信元(用于指示TA的圆心位置)和跟踪半径(用于指示TA的跟踪半径)。
接入点位置信元可以包括终端设备的纬度符号、纬度、经度、高度方向、高度等。
图5是由核心网设备确定跟踪区域的位置更新流程的示意图。图5同样以TA为圆形为例，TA的表示形式为圆心和半径为例。
如图5所示，在510中，终端设备检测是否已经移出第二TA信息指示的TA范围。例如，终端设备可以周期确定所在位置，并判断所在位置是否移出第二TA信息指示的TA所覆盖的范围。
可选地，该周期可变，且随着终端设备远离第二TA信息指示的全部TA所覆盖的范围的边缘时，周期也随之变大。例如，位置A相较于位置B距离第二TA信息指示的全部TA所覆盖的范围的边缘较远，则在位置A时终端设备确定该终端设备的所在位置的周期，大于在位置B时终端设备确定该终端设备的所在位置的周期。
在520中，当终端设备检测到已经移出第二TA信息指示的TA范围时，向核心网设备发送位置更新请求，上报终端设备所在位置，以便进行位置更新。可选地，终端设备可以在位置更新请求中增加接入点位置信元(access point position IE)，用于上报终端设备所在位置。
接入点位置信元可以包括终端设备的纬度符号、纬度、经度、高度方向、高度等。
在530中，核心网设备确定终端设备所在位置对应的TA，并更新TA列表。
核心网设备还可以记录终端设备所在位置。终端设备所在位置可以用于进行TA的确定(例如，作为进行最小覆盖圆算法的输入信息)。可选地，位置更新响应中可以增加TA的表达形式，即增加接入点位置信元(用于指示TA的圆心位置)和跟踪半径(用于指示TA的跟踪半径)。
接入点位置信元可以包括终端设备的纬度符号、纬度、经度、高度方向、高度等。
在540中，核心网设备向终端设备发送位置更新响应，位置更新响应中包括新的TA列表。
在550中，核心网设备确定终端设备所在位置对应的TA范围内的接入网设备。具体地，核心网设备根据自己维护的TA信息，确定该范围内的接入网设备。应理解，TA范围内的接入网设备包括携带接入网设备功能的空载平台(例如，通过计算卫星波束确定)和设置在地面上的接入网设备。
当核心网设备执行560时，即核心网设备接收到针对该终端设备的寻呼消息时，执行570。
在570中，在终端设备所在位置对应的TA范围内进行用户寻呼。具体地，通过550中确定得到的接入网设备向终端设备发送寻呼消息。
在另一些实施例中，终端设备向核心网设备发送的指示信息包括该终端设备所在的位置对应的TA。在此情况下，是由终端设备根据该终端设备所在的位置，确定与该位置对应的TA。
具体地，终端设备确定自己所在位置，并根据自己所在的位置，确定与自己所在位置对应的TA；当终端设备所在位置超出第二TA信息指示的TA所覆盖的范围时，终端设备向核心网设备发送位置更新请求，该终端设备所在的位置对应的TA携带在位置更新请求中；核心网设备接收到终端设备发送的位置更新请求后，更新第二TA信息。
可选地，在终端设备附着过程中，终端设备所在位置对应的TA携带在终端设备向核 心网设备发送的附着请求中。可选地，终端设备可以根据终端设备所在位置和终端设备的类型，确定该终端设备所在位置对应的TA。
终端设备的类型可以是固定终端设备(fixed terminal，FT)或移动终端设备(mobile terminal，MT)。FT类型的终端设备的TA的范围可以小于或者等于MT类型的终端设备的TA的范围。
可选地，终端设备在每次附着过程中的第一个TA可以终端设备所在的位置为圆心。
可选地，在开始附着流程之前，终端设备还可以根据接入网设备发送的广播信息，确定终端设备的跟踪区域的确定方式和TA的设置参数。
例如，在广播信息中增加TA算法参数，使用该TA算法参数可以指示默认优先使用地面网络的TA算法或者默认优先使用基于终端设备所在位置的TA算法等。
TA的设置参数可以是参考最小半径、最大半径等。
可选地，核心网设备确定该位置所对应的TA中的一个或多个小区，当需要寻呼该终端设备时，核心网设备在该一个或多个小区内进行寻呼。可以理解地，在NTN场景下，核心网设备还需要确定在终端设备所在位置对应的TA内的携带在空载平台上的接入网设备的小区(例如，通过计算卫星波束得到)。
可以理解地，当终端设备在空载平台携带的具有接入网设备功能的载荷的服务范围内时，终端设备与核心网设备通过空载平台进行通信。例如，终端设备通过空载平台携带的接入网设备功能载荷将附着请求、位置更新请求等发送给核心网设备；同样，核心网设备通过携带的接入网设备功能载荷将附着响应、位置更新响应、寻呼消息等发给终端设备。
图6是由终端设备确定跟踪区域的附着流程的示意图。图6同样以TA为圆形为例，TA的表示形式为圆心和半径为例。
如图6所示，在610中，接入网设备广播下发通知终端设备跟踪区域的确定的方式和半径(例如最小参考半径)。例如，通知终端设备使用用户自定义TA来进行位置更新(对于具备定位能力的终端设备，可以选择使用自定义确定TA方式进行位置更新)。
在620中，终端设备可以根据终端设备的FT或者MT属性(FT半径较小，MT半径较大)，确定跟踪半径；终端设备向核心网设备发送附着请求，附着请求中包括TA的圆心和半径。可选地，终端设备可以在附着请求中增加TA的表达形式，即增加接入点位置信元(用于指示TA的圆心位置)和跟踪半径(用于指示TA的跟踪半径)。
接入点位置信元可以包括终端设备的纬度符号、纬度、经度、高度方向、高度等。
可选地，在620之后核心网设备可以执行630，在630中，核心网设备记录终端设备所在位置和TA的半径。
在640中，核心网设备向终端设备发送附着响应，反馈TA列表。该TA列表中包括以终端设备为圆心的TA。
可选地，附着响应中可以增加TA的表达形式，即增加接入点位置信元(用于指示TA的圆心位置)和跟踪半径(用于指示TA的跟踪半径)。
接入点位置信元可以包括终端设备的纬度符号、纬度、经度、高度方向、高度等。
图7是由终端设备确定跟踪区域的位置更新流程的示意图。图7同样以TA为圆形为例，TA的表示形式为圆心和半径为例。
如图7所示，在710中，终端设备检测是否已经移出第二TA信息指示的TA范围。
在720中，当终端设备检测到已经移出第二TA信息指示的TA范围时，向核心网设备发送位置更新请求，上报终端设备所在位置对应的TA，以便进行位置更新。
可选地，终端设备可以在附着请求中增加TA的表达形式，即增加接入点位置信元(用于指示TA的圆心位置)和跟踪半径(用于指示TA的跟踪半径)。
接入点位置信元可以包括终端设备的纬度符号、纬度、经度、高度方向、高度等。
在730中，核心网设备更新TA列表。
核心网设备还可以记录终端设备所在位置和终端设备所在位置对应的TA的半径。
在740中，核心网设备向终端设备发送位置更新响应，位置更新响应中包括新的TA列表。
可选地，位置更新响应中可以增加TA的表达形式，即增加接入点位置信元(用于指示TA的圆心位置)和跟踪半径(用于指示TA的跟踪半径)。
接入点位置信元可以包括终端设备的纬度符号、纬度、经度、高度方向、高度等。
在750中，核心网设备确定终端设备所在位置对应的TA范围内的接入网设备。具体地，核心网设备根据自己维护的TA信息，确定该范围内的接入网设备。应理解，TA范围内的接入网设备包括携带接入网设备功能的空载平台(例如，通过计算卫星波束确定)和设置在地面上的接入网设备。当核心网设备执行760时，即核心网设备接收到针对该终端设备的寻呼消息时，执行770。
在760中，在终端设备所在位置对应的TA范围内进行用户寻呼。具体地，通过550中确定得到的接入网设备向终端设备发送寻呼消息。
终端设备和核心网设备确定终端设备所在位置对应的TA方法有很多。例如，采用最小覆盖圆算法等。
以最小覆盖圆算法为例，对本申请实施例的TA确定方法进行描述。如图8所示，以终端设备当前位置P 1作为圆心(PC 1)，半径为R的圆形区域，作为终端设备的初始动态TA 1。终端设备周期获取位置，当终端设备所在位置和TA 1圆心位置的距离超出半径R，则认为终端设备已经移出TA 1区域，终端设备上报位置更新请求以上报新的位置P i，核心网设备根据终端设备新的位置、历史位置及历史圆心等，采用最小覆盖圆算法确定新的跟踪区域TA 2，或终端设备确定新的位置P i对应的TA 2，并上报给核心网设备。
图9是最小覆盖圆算法的示意图。如图9所示，采用最小覆盖圆算法确定TA 2的具体步骤如下：
1、将终端设备所有位置随机排布(这样可以保证算法的复杂度)；
2、初始随意找到两个位置，假设为P 1和P 2，以P 1P 2为直径得到初始圆，设为C 2(C i表示包含前i个位置的最小圆)；
3、按顺序依次加位置，设当前位置为P i。若P i在当前圆C i-1内，C i＝C i-1；否则进入步骤4；
4、一旦进入步骤4，就说明需要构造一个新的圆。显然Pi一定在新圆的边界上。简单地，直接以P 1P i为直径暂且得到一个C i；
5、找到不在C i中的一点P j(j<i)，那么P i，P j一定在更新的圆的边界上。这样，现在为止，能确定有两个点(P i，P j)在更新的圆的边界上。简单地，直接以P 1P j为直径暂且得到一个C j；
6、同样新得到的C j不一定能包含1～j所有的点。继续找到不在C j中的一点P k(k<j<i)，那么P i，P j，P k一定在更新的圆的边界上。在我们能确定有三个点(P i，P j，P k)在更新的圆的边界上。因为三点确定一个圆，由P i，P j，P k构成新的圆C k，且该圆一定能覆盖前i个点；
7、得到新的圆心位置PC k和新的半径R k，这个圆可以覆盖终端设备所有历史上报运动轨迹，在当前得到的R k基础上，增加保护带半径，作为终端设备的新的跟踪区域TA 2。
8、对TA 2的范围进行限制。对于核心网设备，核心网设备可以设置最大跟踪范围R max，如果TA跟踪区域超出R max(例如，漫游用户)，则另起一个新的TA；对于终端设备，终端设备可以根据接入网设备发送的广播信息中的R max，对TA 2的范围进行限制。
下面结合图10至图13对本申请实施例的装置实施例进行描述。
图10是本申请实施例的终端设备的示意性结构图。图10中的终端设备1000可以对应于上文的终端设备，如图10所示，终端设备1000包括接收模块1010和发送模块1020。
发送模块1020，用于向核心网设备发送指示信息，该指示信息用于指示该终端设备的位置。
接收模块1010，用于接收来自该核心网设备的第一跟踪区域TA信息，该第一TA信息包括该终端设备1000所在位置对应的TA，该TA是根据该终端设备1000的位置确定的。
可选地，该发送模块1020具体用于：在该终端设备1000所在位置超出第二TA信息指示的全部TA所覆盖的范围的情况下，向该核心网设备发送该指示信息，该第二TA信息为该终端设备1000当前所使用的TA信息。
可选地，该发送模块1020具体用于：向该核心网设备发送位置更新请求，该位置更新请求包括该指示信息。
可选地，该指示信息包括该终端设备1000所在位置；该接收模块1010，还用于接收接入网设备发送的广播信息，该广播信息用于指示该终端设备1000的TA的确定方式。
可选地，该发送模块1020还用于：向该核心网设备发送该终端设备1000的类型，该类型为固定终端设备FT或移动终端设备MT。
可选地，该指示信息包括该终端设备1000所在位置对应的TA；该终端设备1000还包括：
处理模块1030，用于在该终端设备1000向该核心网设备发送该指示信息之前，根据该终端设备1000所在位置，确定该终端设备1000所在位置对应的TA。
可选地，该接收模块1010还用于：接收接入网设备发送的广播信息，该广播信息用于指示该终端设备1000的跟踪区域的确定方式和TA的设置参数；该处理模块1030，还用于根据该终端设备1000所在位置、该确定方式和该设置参数，确定该终端设备1000所在位置所对应的TA。
可选地，该处理模块1030具体用于：根据该终端设备1000所在位置、该确定方式、该设置参数和该终端设备1000的类型，确定该终端设备1000所在位置对应的TA，该类型为固定终端设备FT或移动终端设备MT。
可选地，该处理模块1030具体用于：针对该终端设备1000的历史位置中的至少部分历史位置以及该终端设备1000所在位置，使用最小覆盖圆算法得到该终端设备1000所在 位置对应的TA。
可选地，该第一TA信息包括该终端设备1000所在位置对应的TA的中心和半径，该第二TA信息包括该全部TA中每一个TA的中心和半径。
可选地，该第一TA信息和该第二TA信息所指示的TA为圆形或多边形。
接收模块1010和发送模块1020可以由收发器实现。处理模块1030可以由处理器实现。接收模块1010、发送模块1020和处理模块1030的具体功能和有益效果可以参见图3所示的方法，在此就不再赘述。
图11是本申请实施例的核心网设备的示意性结构图。图11中的核心网设备1100可以对应于上文的核心网设备，如图11所示，核心网设备1100包括接收模块1110和发送模块1120。
接收模块1110，用于接收终端设备发送的指示信息，该指示信息用于指示该终端设备的位置。
发送模块1120，用于向该终端设备发送第一TA信息，该第一TA信息包括该终端设备所在位置对应的TA，该TA是根据该终端设备的位置确定的。
可选地，该接收模块1110具体用于：接收该终端设备发送的位置更新请求，该位置更新请求包括该指示信息。
可选地，该核心网设备1100还包括：处理模块1130，用于在该终端设备所在位置与第二TA信息指示的全部TA所覆盖的范围的最小距离大于或者等于预设阈值时，重新启动对该终端设备的TA配置流程。
可选地，该第一TA信息包括该终端设备所在位置对应的TA的中心和半径，该第二TA信息包括该全部TA中每一个TA的中心和半径。
可选地，该第一TA信息和该第二TA信息所指示的TA为圆形或多边形。
可选地，该处理模块1130还用于：确定该终端设备所在位置对应的TA中的一个或多个小区；用于在该一个或多个小区内进行寻呼。
可选地，该指示信息包括该终端设备所在位置；该处理模块1130，还用于根据该终端设备所在位置，确定该终端设备所在位置对应的TA。
可选地，该处理模块1130具体用于：针对该终端设备上报的全部历史位置中的至少部分历史位置以及该终端设备所在位置，使用最小覆盖圆算法得到该终端设备所在位置对应的TA。
可选地，该接收模块1110还用于：接收终端设备发送的该终端设备的类型，该类型为固定终端设备FT或移动终端设备MT；该处理模块1130，还用于根据该终端设备所在位置和该终端设备的类型，确定该终端设备所在位置对应的TA。
接收模块1110和发送模块1120可以由收发器实现。处理模块1130可以由处理器实现。接收模块1110、发送模块1120和处理模块1130的具体功能和有益效果可以参见图3所示的方法，在此就不再赘述。
图12是本申请另一实施例的终端设备的示意性结构图。图12中的终端设备1200可以对应于上文的终端设备，如图12所示，终端设备1200包括收发器1210、处理器1220、存储器1230。
图12中仅示出了一个存储器和处理器。在实际的终端设备产品中，可以存在一个或 多个处理器和一个或多个存储器。存储器也可以称为存储介质或者存储设备等。存储器可以是独立于处理器设置，也可以是与处理器集成在一起，本申请实施例对此不做限制。
收发器1210、处理器1220、存储器1230之间通过内部连接通路互相通信，传递控制和/或数据信号。
具体地，收发器1210，用于向核心网设备发送指示信息，该指示信息用于指示该终端设备的位置；接收来自该核心网设备的第一跟踪区域TA信息，该第一TA信息包括该终端设备所在位置对应的TA，该TA是根据该终端设备的位置确定的。
终端设备1200的具体工作过程和有益效果可以参见图3所示实施例中的描述，在此不再赘述。
图13是本申请另一实施例的核心网设备的示意性结构图。图13中的核心网设备1300可以对应于上文的核心网设备，如图13所示，核心网设备1300包括收发器1310、处理器1320、存储器1330。
图13中仅示出了一个存储器和处理器。在实际的核心网设备产品中，可以存在一个或多个处理器和一个或多个存储器。存储器也可以称为存储介质或者存储设备等。存储器可以是独立于处理器设置，也可以是与处理器集成在一起，本申请实施例对此不做限制。
收发器1310、处理器1320、存储器1330之间通过内部连接通路互相通信，传递控制和/或数据信号。
具体地，收发器1310，用于接收终端设备发送的指示信息，该指示信息用于指示该终端设备的位置；向该终端设备发送第一TA信息，该第一TA信息包括该终端设备所在位置对应的TA，该TA是根据该终端设备的位置确定的。
核心网设备1300的具体工作过程和有益效果可以参见图3所示实施例中的描述，在此不再赘述。
本申请各实施例该的收发器也可以称为收发单元、收发机、收发装置等。处理器也可以称为处理单元，处理单板，处理模块、处理装置等。可选的，可以将收发器中用于实现接收功能的器件视为接收单元，将收发器中用于实现发送功能的器件视为发送单元，即收发器包括接收单元和发送单元。接收单元有时也可以称为接收机、接收器、或接收电路等。发送单元有时也可以称为发射机、发射器或者发射电路等。
本申请各实施例所述的存储器用于存储处理器运行所需的计算机指令和参数。
本申请各实施例所述的处理器可能是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。本申请各实施例所述的处理器可以是通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存取存储器(random access memory，RAM)、闪存、只读存储器(read-only memory，ROM)、可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储 介质位于存储器，处理器读取存储器中的指令，结合其硬件完成上述方法的步骤。
在本申请的各种实施例中，各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
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括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 (28)

  1. 一种确定跟踪区域的方法，其特征在于，包括：
    终端设备向核心网设备发送指示信息，所述指示信息用于指示所述终端设备的位置；
    所述终端设备接收来自所述核心网设备的第一TA信息，所述第一TA信息包括所述终端设备所在位置对应的TA，所述TA是根据所述终端设备的位置确定的。
  2. 根据权利要求1所述的方法，其特征在于，所述终端设备向核心网设备发送指示信息，包括：
    在所述终端设备所在位置超出第二TA信息指示的全部TA所覆盖的范围的情况下，所述终端设备向所述核心网设备发送所述指示信息，所述第二TA信息为所述终端设备当前所使用的TA信息。
  3. 根据权利要求1或2所述的方法，其特征在于，所述终端设备向核心网设备发送所述指示信息，包括：
    所述终端设备向所述核心网设备发送位置更新请求，所述位置更新请求包括所述指示信息。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述指示信息包括所述终端设备所在位置，所述方法还包括：
    所述终端设备接收接入网设备发送的广播信息，所述广播信息用于指示所述终端设备的TA的确定方式。
  5. 根据权利要求1至3中任一项所述的方法，其特征在于，所述指示信息包括所述终端设备所在位置对应的TA；
    在所述终端设备向所述核心网设备发送所述指示信息之前，所述方法还包括：
    所述终端设备根据所述终端设备所在位置，确定所述终端设备所在位置对应的TA。
  6. 根据权利要求5所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收接入网设备发送的广播信息，所述广播信息用于指示所述终端设备的TA的确定方式和TA的设置参数；
    所述终端设备根据所述终端设备所在位置、所述确定方式和所述设置参数，确定所述终端设备所在位置所对应的TA。
  7. 根据权利要求5或6所述方法，其特征在于，所述终端设备根据所述终端设备所在位置，确定所述终端设备所在位置对应的TA，包括：
    针对所述终端设备的历史位置中的至少部分历史位置以及所述终端设备所在位置，所述终端设备使用最小覆盖圆算法得到所述终端设备所在位置对应的TA。
  8. 根据权利要求2至7中任一项所述的方法，其特征在于，所述第一TA信息包括所述终端设备所在位置对应的TA的圆心和半径，所述第二TA信息包括所述全部TA中每一个TA的圆心和半径。
  9. 一种确定跟踪区域的方法，其特征在于，包括：
    核心网设备接收终端设备发送的指示信息，所述指示信息用于指示所述终端设备的位置；
    所述核心网设备向所述终端设备发送第一TA信息，所述第一TA信息包括所述终端设备所在位置对应的TA，所述TA是根据所述终端设备的位置确定的。
  10. 根据权利要求9所述的方法，其特征在于，所述核心网设备接收终端设备发送的指示信息，包括：
    所述核心网设备接收所述终端设备发送的位置更新请求，所述位置更新请求包括所述指示信息。
  11. 根据权利要求10所述的方法，其特征在于，所述第一TA信息包括所述终端设备所在位置对应的TA的圆心和半径。
  12. 根据权利要求9至11中任一项所述的方法，其特征在于，所述方法还包括：
    所述核心网设备确定所述终端设备所在位置对应的TA中的一个或多个小区；
    所述核心网设备在所述一个或多个小区内进行寻呼。
  13. 根据权利要求9至12中任一项所述的方法，其特征在于，所述指示信息包括所述终端设备所在位置，所述方法还包括：
    所述核心网设备根据所述终端设备所在位置，确定所述终端设备所在位置对应的TA。
  14. 根据权利要求13所述的方法，其特征在于，所述核心网设备根据所述终端设备所在位置，确定所述终端设备所在位置对应的TA，包括：
    针对所述终端设备上报的全部历史位置中的至少部分历史位置以及所述终端设备所在位置，所述核心网设备使用最小覆盖圆算法得到所述终端设备所在位置对应的TA。
  15. 一种终端设备，其特征在于，包括：
    发送模块，用于向核心网设备发送指示信息，所述指示信息用于指示所述终端设备的位置；
    接收模块，用于接收来自所述核心网设备的第一TA信息，所述第一TA信息包括所述终端设备所在位置对应的TA，所述TA是根据所述终端设备的位置确定的。
  16. 根据权利要求15所述的终端设备，其特征在于，所述发送模块具体用于：
    在所述终端设备所在位置超出第二TA信息指示的全部TA所覆盖的范围的情况下，向所述核心网设备发送所述指示信息，所述第二TA信息为所述终端设备当前所使用的TA信息。
  17. 根据权利要求15或16所述的终端设备，其特征在于，所述发送模块具体用于：
    向所述核心网设备发送位置更新请求，所述位置更新请求包括所述指示信息。
  18. 根据权利要求15至17中任一项所述的终端设备，其特征在于，所述指示信息包括所述终端设备所在位置；
    所述接收模块，还用于接收接入网设备发送的广播信息，所述广播信息用于指示所述终端设备的TA的确定方式。
  19. 根据权利要求15至17中任一项所述的终端设备，其特征在于，所述指示信息包括所述终端设备所在位置对应的TA；
    所述终端设备还包括：
    处理模块，用于在所述终端设备向所述核心网设备发送所述指示信息之前，根据所述终端设备所在位置，确定所述终端设备所在位置对应的TA。
  20. 根据权利要求19所述的终端设备，其特征在于，所述接收模块还用于：
    接收接入网设备发送的广播信息，所述广播信息用于指示所述终端设备的TA的确定方式和TA的设置参数；
    所述处理模块，还用于根据所述终端设备所在位置、所述确定方式和所述设置参数，确定所述终端设备所在位置所对应的TA。
  21. 根据权利要求19或20所述终端设备，其特征在于，所述处理模块具体用于：
    针对所述终端设备的历史位置中的至少部分历史位置以及所述终端设备所在位置，使用最小覆盖圆算法得到所述终端设备所在位置对应的TA。
  22. 根据权利要求16至21中任一项所述的终端设备，其特征在于，所述第一TA信息包括所述终端设备所在位置对应的TA的圆心和半径，所述第二TA信息包括所述全部TA中每一个TA的圆心和半径。
  23. 一种核心网设备，其特征在于，包括：
    接收模块，用于接收终端设备发送的指示信息，所述指示信息用于指示所述终端设备的位置；
    发送模块，用于向所述终端设备发送第一TA信息，所述第一TA信息包括所述终端设备所在位置对应的TA，所述TA是根据所述终端设备的位置确定的。
  24. 根据权利要求23所述的核心网设备，其特征在于，所述接收模块具体用于：
    接收所述终端设备发送的位置更新请求，所述位置更新请求包括所述指示信息。
  25. 根据权利要求24所述的核心网设备，其特征在于，所述第一TA信息包括所述终端设备所在位置对应的TA的圆心和半径。
  26. 根据权利要求23至25中任一项所述的核心网设备，其特征在于，所述处理模块还用于：
    确定所述终端设备所在位置对应的TA中的一个或多个小区；
    用于在所述一个或多个小区内进行寻呼。
  27. 根据权利要求23至26中任一项所述的核心网设备，其特征在于，所述指示信息包括所述终端设备所在位置；
    所述处理模块，还用于根据所述终端设备所在位置，确定所述终端设备所在位置对应的TA。
  28. 根据权利要求27所述的核心网设备，其特征在于，所述处理模块具体用于：
    针对所述终端设备上报的全部历史位置中的至少部分历史位置以及所述终端设备所在位置，使用最小覆盖圆算法得到所述终端设备所在位置对应的TA。
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Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022056854A1 (zh) * 2020-09-18 2022-03-24 Oppo广东移动通信有限公司 无线通信方法和设备
CN115606204A (zh) * 2020-10-22 2023-01-13 北京小米移动软件有限公司（Cn） 跟踪区域的更新方法及装置、通信设备和存储介质
EP4250806A4 (en) * 2020-11-18 2024-01-10 Guangdong Oppo Mobile Telecommunications Corp., Ltd. METHOD AND APPARATUS FOR REPORTING TIME ADVANCE IN NTN, METHOD AND APPARATUS FOR RECEIVING TIME ADVANCE IN NTN AND APPARATUS
CN112203222A (zh) * 2020-11-19 2021-01-08 北京鼎普科技股份有限公司 Gsm模式下的取号连接保活方法、装置和电子设备
CN114765739A (zh) * 2021-01-13 2022-07-19 维沃移动通信有限公司 位置信息上报方法、装置及设备
CN113179489B (zh) * 2021-04-09 2021-11-02 广州爱浦路网络技术有限公司 卫星终端接入管理方法、核心网、计算机装置和存储介质
CN115529605B (zh) * 2021-06-24 2024-07-02 中国移动通信集团广西有限公司 一种小区配置直放站的识别方法、装置及电子设备
CN113556809B (zh) * 2021-07-15 2024-05-07 浙江赛思电子科技有限公司 一种5g空口时间误差提前量ta估计方法
CN113796102A (zh) * 2021-07-26 2021-12-14 北京小米移动软件有限公司 非地面网络中上报终端设备位置信息的方法和装置
WO2023050317A1 (zh) * 2021-09-30 2023-04-06 北京小米移动软件有限公司 跟踪区处理方法及装置、通信设备及存储介质
CN116567539A (zh) * 2022-01-29 2023-08-08 华为技术有限公司 一种信息更新方法以及通信装置
CN117835397A (zh) * 2022-09-28 2024-04-05 上海数字电视国家工程研究中心有限公司 一种非地面网络定位方法及设备
WO2024065353A1 (en) * 2022-09-29 2024-04-04 Nokia Shanghai Bell Co., Ltd. Coverage window update due to user equipment movement within tracking area
WO2024082233A1 (zh) * 2022-10-20 2024-04-25 北京小米移动软件有限公司 移动性限制实现方法和装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101925174A (zh) * 2009-06-15 2010-12-22 中国移动通信集团公司 Isr优化的方法、装置和系统
CN104427476A (zh) * 2013-09-10 2015-03-18 中兴通讯股份有限公司 位置信息上报方法、集群服务处理方法及系统
WO2017018838A1 (ko) * 2015-07-28 2017-02-02 엘지전자(주) 무선 통신 시스템에서 다중의 위치 영역 관리 방법 및 이를 위한 장치
CN108040367A (zh) * 2016-11-04 2018-05-15 电信科学技术研究院 一种ue位置区域更新方法、接入网实体、ue及核心网实体

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102395120B (zh) * 2008-09-27 2014-07-09 华为技术有限公司 移动性管理方法、相关设备及通信系统
US9060347B2 (en) * 2012-11-30 2015-06-16 Cisco Technology, Inc. Subscriber-aware paging
US9271116B1 (en) * 2014-08-26 2016-02-23 Verizon Patent And Licensing Inc. Location-based telephone calls over a wireless local area network (WLAN)
US9877204B1 (en) * 2014-10-08 2018-01-23 Sprint Spectrum L.P. Systems and methods for a multi-layer tracking area code assignment
CN107770863A (zh) * 2016-08-19 2018-03-06 深圳市金立通信设备有限公司 寻呼方法、装置以及设备
CN108024332A (zh) * 2016-11-02 2018-05-11 中兴通讯股份有限公司 一种寻呼优化的方法和装置
WO2020051508A1 (en) * 2018-09-06 2020-03-12 Lynk Global, Inc. Cellular core network and radio access network infrastructure and management in space
EP3858100B1 (en) * 2018-09-27 2023-11-15 ZTE Corporation Geographical position based tracking area management
EP3868160A1 (en) * 2018-12-04 2021-08-25 Google LLC Dynamic capability reporting based on position
CN113508625B (zh) * 2019-01-11 2024-06-21 瑞典爱立信有限公司 用于促进非地面网络中基于索引的定位的设备和方法
US11997593B2 (en) * 2019-02-13 2024-05-28 Telefonaktiebolaget Lm Ericsson (Publ) Enhanced cell selection for non-terrestrial networks

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101925174A (zh) * 2009-06-15 2010-12-22 中国移动通信集团公司 Isr优化的方法、装置和系统
CN104427476A (zh) * 2013-09-10 2015-03-18 中兴通讯股份有限公司 位置信息上报方法、集群服务处理方法及系统
WO2017018838A1 (ko) * 2015-07-28 2017-02-02 엘지전자(주) 무선 통신 시스템에서 다중의 위치 영역 관리 방법 및 이를 위한 장치
CN108040367A (zh) * 2016-11-04 2018-05-15 电信科学技术研究院 一种ue位置区域更新方法、接入网实体、ue及核心网实体

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3913979A4

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