WO2023070326A1 - Ta信息处理方法及装置、通信设备及存储介质 - Google Patents

Ta信息处理方法及装置、通信设备及存储介质 Download PDF

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Publication number
WO2023070326A1
WO2023070326A1 PCT/CN2021/126464 CN2021126464W WO2023070326A1 WO 2023070326 A1 WO2023070326 A1 WO 2023070326A1 CN 2021126464 W CN2021126464 W CN 2021126464W WO 2023070326 A1 WO2023070326 A1 WO 2023070326A1
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Prior art keywords
registration update
information
registration
sending
network device
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PCT/CN2021/126464
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English (en)
French (fr)
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沈洋
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北京小米移动软件有限公司
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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to PCT/CN2021/126464 priority Critical patent/WO2023070326A1/zh
Priority to CN202180003579.5A priority patent/CN116391401A/zh
Publication of WO2023070326A1 publication Critical patent/WO2023070326A1/zh

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    • 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

Definitions

  • the present disclosure relates to but not limited to the technical field of wireless communication, and in particular relates to a tracking area (Tracking Area, TA) information processing method and device, communication equipment and storage medium.
  • TA Tracking Area
  • the user equipment When the user equipment (User Equipment, UE) initially connects to the network, it sends a registration request to the network, and the network side responds to the registration request. During the registration process, the network side creates and saves the registration area (Registration Area, RA) of the UE, and usually the registration area includes one or more TAs.
  • RA Registration Area
  • Non-terrestrial networks may include NTN cells.
  • Typical NTN cells include, but are not limited to, satellite cells.
  • the NTN cell broadcasts the TA information of the TA, and may broadcast the TA information of multiple TAs at the same time.
  • the network side judges that the UE needs to send a registration update to update the RA of the UE, but after the UE receives the registration update notification, it determines that the registration update does not need to be performed, which leads to a discussion between the network side and the UE whether it is necessary There is a conflict in the judgment of initiating a registration update, which further leads to abnormal process processing.
  • Embodiments of the present disclosure provide a TA information processing method and device, a communication device, and a storage medium.
  • the first aspect of the embodiments of the present disclosure provides a method for processing TA information, which is executed by a user equipment UE, and the method includes:
  • the second aspect of the embodiments of the present disclosure provides a registration update method, which is performed by the UE, and the method includes:
  • a third aspect of the embodiments of the present disclosure provides an apparatus for processing TA information, wherein, executed by a user equipment UE, the apparatus includes:
  • a receiving module configured to receive broadcasted first TA information; wherein the first TA information indicates a first TA;
  • a selection module configured to select a second TA from the first TA when at least one TA of the first TA is contained in the registration area RA of the UE, wherein the second TA is contained in within said RA;
  • the sending module is configured to send a non-access stratum NAS request message, where the NAS request message carries second TA information of the second TA.
  • a third aspect of the embodiments of the present disclosure provides a device for updating registration, wherein, executed by a UE, the device includes:
  • the receiving module is configured to receive the registration update notification sent by the network device
  • a sending module configured to send a registration update request to the network device directly according to the registration update notification.
  • the fifth aspect of the embodiments of the present disclosure provides a communication device, including a processor, a transceiver, a memory, and an executable program stored on the memory and capable of being run by the processor, wherein the processor runs the executable
  • the program executes the registration update method provided in the aforementioned first or second aspect.
  • the sixth aspect of the embodiments of the present disclosure provides a computer storage medium, the computer storage medium stores an executable program; after the executable program is executed by a processor, it can realize the registration provided by the first aspect or the second aspect. update method.
  • the UE after receiving the first TA information broadcast by the base station, judges that at least one of the first TAs indicated by the first TA information is included in the RA of the UE, and selects the first TA from the first TA.
  • the second TA information of the second TA included in the RA is carried in the NAS request message, so that after the AMF on the network side receives it, it will not trigger the UE registration update, so that the UE side and the network side can avoid judging the registration update conflicts, thereby avoiding the occurrence of abnormal processes caused by different judgments of the network side and the UE.
  • the UE after receiving the trigger update notification, the UE can directly initiate a registration update request according to the trigger update notification without judging whether to initiate a registration update by itself. In this way, the conflict between the UE side and the network side on the registration update judgment can be avoided , so as to avoid the occurrence of abnormal processes caused by different judgments of the network side and the UE.
  • Fig. 1 is a schematic structural diagram of a wireless communication system according to an exemplary embodiment
  • Fig. 2 is a schematic diagram of TA switching of a wireless cell according to an exemplary embodiment
  • Fig. 3 is a schematic diagram of TA switching of another wireless cell according to an exemplary embodiment
  • Fig. 4 is a schematic flowchart of a TA registration update according to an exemplary embodiment
  • Fig. 5 is a schematic diagram of TA switching of another wireless cell according to an exemplary embodiment
  • Fig. 6 is a schematic flowchart of a method for processing TA information according to an exemplary embodiment
  • Fig. 7 is a schematic flowchart of a method for processing TA information according to an exemplary embodiment
  • Fig. 8 is a schematic flowchart of a method for processing TA information according to an exemplary embodiment
  • Fig. 9 is a schematic flowchart of a method for processing TA information according to an exemplary embodiment
  • Fig. 10 is a schematic structural diagram of a TA information processing device according to an exemplary embodiment
  • Fig. 11 is a schematic structural diagram of a TA information processing device according to an exemplary embodiment
  • Fig. 12 is a schematic structural diagram of a UE according to an exemplary embodiment.
  • first, second, third, etc. may use the terms first, second, third, etc. to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the embodiments of the present disclosure, first information may also be called second information, and similarly, second information may also be called first information. Depending on the context, the word “if” as used herein may be interpreted as “at” or "when” or "in response to a determination.”
  • FIG. 1 shows a schematic structural diagram of a wireless communication system provided by an embodiment of the present disclosure.
  • the wireless communication system is a communication system based on cellular mobile communication technology, and the wireless communication system may include: several UEs 11 and several access devices 12 .
  • UE11 may be a device that provides voice and/or data connectivity to a user.
  • UE11 can communicate with one or more core networks via a radio access network (Radio Access Network, RAN), and UE11 can be an Internet of Things UE, such as a sensor device, a mobile phone (or called a "cellular" phone) and a device with an Internet of Things
  • RAN Radio Access Network
  • UE11 can be an Internet of Things UE, such as a sensor device, a mobile phone (or called a "cellular" phone) and a device with an Internet of Things
  • the UE's computer for example, may be a fixed, portable, pocket, hand-held, built-in or vehicle-mounted device.
  • UE11 may also be a device of an unmanned aerial vehicle.
  • UE11 may also be a vehicle-mounted device, for example, it may be a trip computer with a wireless communication function, or a wireless communication device connected externally to the trip computer.
  • the UE11 may also be a roadside device, for example, it may be a street lamp, a signal lamp, or other roadside devices with a wireless communication function.
  • the access device 12 may be a network side device in a wireless communication system.
  • the wireless communication system may be a fourth generation mobile communication technology (the 4th generation mobile communication, 4G) system, also known as a Long Term Evolution (LTE) system; or, the wireless communication system may also be a 5G system, Also known as new radio (NR) system or 5G NR system.
  • the wireless communication system may also be a next-generation system of the 5G system.
  • the access network in the 5G system can be called NG-RAN (New Generation-Radio Access Network, New Generation Radio Access Network).
  • the MTC system the MTC system.
  • the access device 12 may be an evolved access device (eNB) adopted in a 4G system.
  • the access device 12 may also be an access device (gNB) adopting a centralized and distributed architecture in the 5G system.
  • eNB evolved access device
  • gNB access device
  • the access device 12 adopts a centralized distributed architecture it usually includes a centralized unit (central unit, CU) and at least two distributed units (distributed unit, DU).
  • the centralized unit is provided with a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer, radio link layer control protocol (Radio Link Control, RLC) layer, media access control (Media Access Control, MAC) layer protocol stack;
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC media access control
  • a physical (Physical, PHY) layer protocol stack is set in the unit, and the embodiment of the present disclosure does not limit the specific implementation manner of the access device 12 .
  • a wireless connection may be established between the access device 12 and the UE 11 through a wireless air interface.
  • the wireless air interface is a wireless air interface based on the fourth-generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth-generation mobile communication network technology (5G) standard, such as
  • the wireless air interface is a new air interface; alternatively, the wireless air interface may also be a wireless air interface based on a technical standard of a next-generation mobile communication network based on 5G.
  • an E2E (End to End, end-to-end) connection can also be established between UE11.
  • V2V vehicle to vehicle, vehicle-to-vehicle
  • V2I vehicle to Infrastructure, vehicle-to-roadside equipment
  • V2P vehicle to pedestrian, vehicle-to-person communication in vehicle to everything (V2X) communication Wait for the scene.
  • the above wireless communication system may further include a network management device 13 .
  • the network management device 13 may be a core network device in the wireless communication system, for example, the network management device 13 may be a mobility management entity (Mobility Management Entity, MME).
  • MME Mobility Management Entity
  • the network management device can also be other core network devices, such as Serving GateWay (SGW), Public Data Network Gateway (Public Data Network GateWay, PGW), policy and charging rule functional unit (Policy and Charging Rules Function, PCRF) or Home Subscriber Server (Home Subscriber Server, HSS), etc.
  • SGW Serving GateWay
  • PGW Public Data Network Gateway
  • PCRF Policy and Charging Rules Function
  • HSS Home Subscriber Server
  • the UE accesses the network through the terrestrial cellular system.
  • the wireless cell broadcasts the TAC of a single tracking area TA to the UE, and the UE uses the TA to register to the network. Afterwards, in the course of conducting services, the network can page the UE according to the TA.
  • the UE accesses the network through the satellite system. Due to the altitude and movement of the satellite, in order to better page the UE, the satellite cell supports broadcasting the TAC of a single or multiple TAs to the UE.
  • the satellite broadcasts the Tracking Area Code (TAC) TAC of a single TA.
  • TAC Tracking Area Code
  • the UE receives TAC1 broadcast by satellite 1.
  • satellite 1 moves to the junction of TA1 and TA2.
  • the UE receives the TAC2 information broadcast by satellite 1.
  • satellite 1 has completely moved out of the coverage area of TA1, and satellite 2, which has moved into the coverage area, provides coverage and broadcasts TAC1 to the ground, and the UE receives and broadcasts TAC1 information. Therefore, the broadcast TACs received by the UE in TA1 at different times are TAC1, TAC2, TAC1, TAC2....
  • the satellite broadcasts multiple TACs. Take the UE in TA1 as an example, at time T1, satellite 1 broadcasts TAC1, and the UE receives the TAC1 information broadcast by satellite 1. At time T2, satellite 1 moves to the junction of TA1 and TA2, at this time, satellite 1 broadcasts TAC1+TAC2, and the UE receives the TAC1+TAC2 information broadcast by satellite 1. At time T3, satellite 1 has completely moved out of the coverage area of TA1, and satellite 2, which has moved into the coverage area, provides coverage and broadcasts TAC1 to the ground, and UE receives the TAC1 information broadcast by satellite 2. Therefore, the broadcast TACs received by the UE in TA1 at different times are TAC1, TAC1+TAC2, TAC1, TAC1+TAC2....
  • FIG. 1 The satellite cell broadcasts multiple TACs.
  • Satellite communication systems can use either of the above broadcast modes, or a combination of both modes.
  • Figure 4 shows a UE registration update process, which may include:
  • the UE sends a registration request message to an access network or radio access network (AN/RAN) device.
  • the message contains access network (Access Network, AN) parameters, registration type, subscription concealed identifier (SUCI) or user temporary identification code of the 5th generation mobile communication (5Generation temporary UE identity, GUTI, 5G-GUTI) Or Paging Early Indication (Paging Early Indication, PEI), requested network slice selection assistance information (NSSAI), last access available tracking area identification (Tracking Area Identification, TAI), etc.
  • access network Access Network
  • SUCI subscription concealed identifier
  • PEI Paging Early Indication
  • NSSAI requested network slice selection assistance information
  • TAI Tracking Area Identification
  • the registration type indicates whether the terminal is to perform initial registration, mobile registration update, periodic registration update, or emergency registration.
  • the last visited TAI may be included.
  • (R)AN selects AMF according to (R)AT and requests NSSAI. If the (R)AN cannot select an appropriate AMF, the AN/RAN forwards the Registration Request message to the AMF configured in the (R)AN.
  • the message includes N2 parameters, a registration request, and the like.
  • the N2 parameter includes the selected PLMN ID, location information and unit identification related to the unit where the UE is located.
  • the new AMF can retrieve the stored UE's SUPI and UE context from the old AMF.
  • the new AMF initiates an identity request procedure to the terminal to request SUCI.
  • the new AMF can decide to start UE authentication by invoking AUSF.
  • AMF selects AUSF according to SUPI or SUCI.
  • the SUPI-based AMF selects a UDM and registers with that UDM. If the AMF does not have subscription data for the UE, the AMF retrieves access and mobility subscription data etc. from the UDM.
  • the new AMF executes AM policy association (Policy Association) establishment/modification to the policy control function PCF.
  • AM policy association Policy Association
  • step 1 If the registration request in step 1 contains a list of PDU sessions to be activated, AMF will send Nsmf_PDUSession_UpdateSMContext request to the session management function SMF (Session Management Function) related to the PDU session to activate the user plane connection of these PDU sessions.
  • SMF Session Management Function
  • the new AMF sends a Registration Accept (Registration Accept) message to the terminal, indicating that the registration request has been accepted.
  • the content of the message includes the area information of the registered area, the information of the movement restriction, the allowed NSSAI, the registration timer indication of the strict period, etc. If the AMF allocates a new registration area, it needs to send the area information of the registration area to the terminal. If the area information of the registration area is not included in the registration acceptance message, the terminal will consider the old registration area to be valid. Include movement restriction information if the terminal and registration type of the movement restriction application is not emergency registration.
  • the AMF obtains the current TA of the UE, and constructs a registration area (Registration Area, RA) based on the TA and other TAs (such as the most recently visited TA, or a neighboring TA). Thereafter, the AMF performs UE paging according to the RA.
  • RA Registration Area
  • the UE initiates a registration update, and the updated RA includes the latest current TA of the UE.
  • the prior art defines that after the UE registers to the network, if there is at least one TA corresponding to the broadcasted TAC included in the RA, the UE does not need to perform registration update Process; when any TA corresponding to the broadcasted TAC is not included in the RA, the UE needs to initiate a registration update to update the RA.
  • the satellite cell covers TA1, TA2, TA5, and broadcasts TAC1, TAC2, and TAC5.
  • the user location information (User Location Information , ULI) contains TAC1 sent to AMF.
  • the AMF creates an RA for the UE, including TAC1.
  • TACs of one or more TAs adjacent to TA1 may also be added to the RA.
  • the UE's RA includes ⁇ TAC1, TAC2, TAC4, TAC5 ⁇ .
  • the satellite cell moves to the dotted circle area shown in Fig. 5, and broadcasts TAC2, TAC5 and TAC6 at this time.
  • the UE also moves from TA1 to TA6.
  • the ULI includes TAC6 and sends it to the AMF.
  • AMF needs to trigger UE to initiate a registration update process to update RA to include TAC6.
  • TAC2 and TAC5 in the broadcast information TAC2, TAC5 and TAC6 received by the UE are included in the current UE RA, there is no need to initiate a registration update.
  • the network side needs to trigger the registration update, and the UE side does not need to initiate the registration update, and an abnormal conflict will occur, which may lead to abnormal process processing.
  • an embodiment of the present disclosure provides a method for processing TA information, which is performed by a UE, and the method includes:
  • S110 Receive broadcasted first TA information; wherein, the first TA information indicates a first TA;
  • S120 When at least one TA in the first TA is included in the RA of the UE, select a second TA from the first TA, where the second TA is included in the RA;
  • S130 Send a NAS request message, where the NAS request message carries second TA information of the second TA.
  • the UE in the embodiments of the present disclosure may be any type of UE, for example, a mobile phone, a tablet computer, a wearable device, a vehicle-mounted device, or a ground-walking robot or a low-altitude flying aircraft.
  • the UE can be an NTN UE and can access an NTN cell.
  • each TA in the first TA is included in the RA, if it is found that one or more TAs in the first TA are included in the RA, then One or more TAs are selected from the first TA as the second TA, and the selected second TA is included in the RA.
  • the network equipment of the core network finds that the TA indicated by the TA information is included in the RA of the UE, and then determines not to trigger the UE registration update, so, it will This prevents the occurrence of inconsistencies between the UE side and the network side in judging whether registration update is required, and reduces the occurrence of abnormal processes.
  • the method further includes: when none of the TAs in the first TA is included in the RA, selecting a third TA from the first TA,
  • the registration update request message carries third TA information of the third TA.
  • one or more TAs may be arbitrarily selected from the first TA as the third TA and sent to the network side through a registration update request, thus, the network side ( For example, the AMF) determines that the third TA is not included in the UE's RA according to the third TA information, and will accept the registration update request, and update the UE's RA, thereby completing the registration update process.
  • the network side For example, the AMF
  • the third TA is: any TA included in the first TA but not included in the RA before the registration update.
  • the third TA can be one or more.
  • the third TA may be one, and is a TA randomly selected by the UE from the first TA or the TA where the UE is currently located determined according to the location of the UE.
  • the second TA is any TA included in the first TA and included in the RA. If some TAs in the first TA are included in the RA of the UE, select any one or more TAs included in the RA in the first TA as the second TA, and store the second TA information of the second TA Report to the network side.
  • the first TA information, the second TA information, and the third TA information may all be TAC or tracking area identification (Tracking Area Identification, TAI).
  • the second TA may be: a randomly selected TA belonging to the first TA and included in the RA of the UE.
  • the NAS request message includes at least one of the following:
  • the service request message may be a request sent by the UE when requesting a related service, for example, a video service and/or a voice service.
  • the registration update request message may be sent by the UE when it moves to a TA outside the RA.
  • the PDU session establishment request message is used for the UE to request the network side to establish a new PDU session.
  • the PDU session modification request message is used for the UE to request the network side to modify the currently established PDU session.
  • the UE When the UE sends the NAS request message to the network side, it carries TA information, which can be used by the network device (for example, AMF) on the network side to determine whether to trigger the UE to initiate a registration update.
  • the process of registration update can reuse the process of initial registration, as shown in Figure 5 above.
  • an embodiment of the present disclosure provides a registration update method, which is performed by a UE, and the method includes:
  • S220 Send a registration update request to the network device directly according to the registration update notification.
  • the UE in the embodiments of the present disclosure may be any type of UE, for example, a mobile phone, a tablet computer, a wearable device, a vehicle-mounted device, or a ground-walking robot or a low-altitude flying aircraft.
  • the UE can be an NTN UE and can access an NTN cell.
  • the network devices here include but are not limited to AMF.
  • the UE After receiving the registration update notification, the UE directly initiates a registration update according to the registration update notification.
  • the UE directly initiates the registration update according to the registration update notification sent by the network device, ignoring the UE's own process of judging whether to initiate the registration update, thereby avoiding inconsistent judgments between the UE side and the network side on whether to initiate the registration update.
  • the S220 may include:
  • the registration update request is sent to the network device regardless of whether the registration update itself needs to be initiated.
  • the UE After receiving the registration update notification, the UE will not judge whether to initiate a registration update, that is, skip the UE's registration update judgment step, and directly send a registration update request to the network device.
  • S220 may include: sending a registration update request to the network device according to the registration update notification without judging whether the registration update needs to be initiated.
  • the S220 may include:
  • the UE will ignore the TA information broadcast by the base station and/or the RA information stored locally by the UE, and the RA information indicates the RA of the UE.
  • the UE cannot obtain the judgment result of whether registration update is required, so there will be no judgment result conflicting with the registration update result obtained by the network side, At this time, the UE is equivalent to sending a registration update request to the network device directly according to the registration update notification sent by the network side.
  • the registration update notification may be sent to the UE by a separate NAS message, or may be indication information carried in a response message of the NAS request message.
  • the response message may be a rejection message of the NAS request message, and the rejection message may carry a reason value for rejecting the NAS request by the network device. If the cause value indicates that a registration update is required to perform an RA update, then the cause value is the registration update notification.
  • the process of directly sending the registration update to the network device can reuse the initial registration process, which can be referred to above as shown in FIG. 5 .
  • An embodiment of the present disclosure provides a method for processing TA information, which may include:
  • the UE When the network (such as AMF) notifies the UE to initiate a registration update, the UE does not need to judge whether to initiate a registration update process according to the registration update notification, that is, the priority of the registration update required by the network is higher than that of the UE.
  • the network such as AMF
  • gNB includes TAC1 in the ULI and sends it to AMF. After the initial registration is successful, AMF builds and saves RA.
  • the RA includes TAC1, TAC2, TAC4, TAC5, The AMF returns the RA to the UE for storage.
  • the UE moves to TA6, initiates a service request (service request) message, the satellite cell also moves, and broadcasts TAC2, TAC5 and TAC6 to the UE.
  • service request service request
  • the UE and AMF processing during the UE initiating a service request can be shown in Figure 8:
  • the UE is located at TA1, accesses the network through the satellite, and completes the initial access registration process.
  • the AMF determines that the registration area RA of the UE includes TAC1, TAC2, TAC4, and TAC5. Save the RA information of the UE.
  • the AMF includes the RA in the registration acceptance message and returns it to the UE.
  • the UE saves the RA information.
  • the UE sends a NAS request message to the network side, for example, the UE initiates a service request (service request) message at T2.
  • the gNB sends a service request message to the AMF.
  • the service request message includes: the current TA of the UE, that is, the TAC6 of the TA6. Specifically, the gNB sends the TAC6 of the TA6 together with the service request (service request) message to the AMF.
  • the AMF receives the NAS request message, judges that TAC6 is not included in the RA, and needs to trigger the registration update.
  • the NAS request message here includes the aforementioned service request message.
  • the remaining steps of the service request for example, the AMF completes the remaining steps of the process corresponding to the service request (service request) message.
  • the service rejection group message carries a reason value.
  • the AMF returns a service rejection (service reject) message to the UE, carrying a reason value, indicating that the UE needs to register and update.
  • This message can be used as a message that triggers the UE to initiate a registration update.
  • AMF returns a service reject message, go to step 10.
  • Trigger UE registration update for example, AMF sends a message to UE to trigger registration update.
  • a registration update request which can carry TA6 information (TAC6).
  • TAC6 TA6 information
  • the gNB sends the information TAC6 of the TA corresponding to the UE's current location together with a registration update request (registration update request) message to the AMF.
  • the AMF returns a registration update success message, and sends the updated RA to the UE for storage.
  • the UE judges that the received broadcast TAC changes, when initiating the NAS procedure, the UE preferentially selects the TAC of the TA included in the RA.
  • the UE includes the TAC initiated NAS procedure in the NAS request message.
  • the gNB includes this in the ULI and sends it to the AMF.
  • the AMF constructs and saves an RA
  • the RA includes TAC1, TAC2, TAC4, and TAC5, and the AMF returns the RA to the UE for storage.
  • the UE moves to TA6, initiates a service request (service request) message
  • the satellite cell also moves, broadcasts TAC2, TAC5 and TAC6 to the UE, and the UE and AMF processing during the UE initiates a service request (service request) message is shown in Figure 9 Shown:
  • the processing of the initial registration process is completed between the UE and the core network, which may specifically include:
  • the UE is located at TA1, accesses the network through the satellite, and completes the initial access registration process.
  • the AMF stores the UE's RA information, and when processing the UE's registration request, the AMF determines that the UE's RA includes TAC1, TAC2, TAC4, and TAC5.
  • the UE sends a service request message to the AMF through the gNB, carrying TAC5, for example, the UE sends a service request (service request) message containing TAC5.
  • the AMF judges that TAC5 is included in the RA, does not need to initiate registration update, and processes other steps of the service request message.
  • the AMF returns a service accept (service accept) message to the UE.
  • the UE before sending the NAS procedure, the UE first selects a TAC included in the broadcast TAC according to the RA and includes it in the NAS request message and sends it to the network, so as to prevent the network from triggering the UE to initiate a registration update operation. If according to the RA, the UE cannot select any TA included in the RA from the current broadcast TAC, it may select a TAC from the broadcast TAC to initiate a registration update procedure.
  • an embodiment of the present disclosure provides a TA information processing device, wherein the device includes:
  • the receiving module 110 is configured to receive broadcasted first TA information; wherein, the first TA information indicates a first TA;
  • the selection module 120 is configured to select a second TA from the first TA when at least one TA in the first TA is included in the registration area RA of the UE, wherein the second TA includes within said RA;
  • the sending module 130 is configured to send a non-access stratum NAS request message, where the NAS request message carries second TA information of the second TA.
  • the TA information processing device may be included in the UE.
  • the receiving module 110, the selecting module 120 and the sending module 130 may be program modules; after the program modules are executed by the processor, the functions of the aforementioned modules can be realized.
  • the receiving module 110, the selecting module 120 and the sending module 130 may be a combination of hardware and software modules; the combination of hardware and software modules includes but not limited to various programmable arrays; the programmable arrays include but Not limited to: field programmable and/or complex programmable arrays.
  • the receiving module 110 , the selecting module 120 and the sending module 130 may be pure hardware modules; the pure hardware modules include but not limited to ASICs.
  • the selection module 120 is further configured to select a third TA from the first TA when none of the TAs in the first TA is included in the RA,
  • the sending module 130 is configured to send a registration update request, where the registration update request message carries third TA information of the third TA.
  • the third TA is:
  • the second TA is:
  • Any TA contained by the first TA and contained by the RA is any TA contained by the first TA and contained by the RA.
  • an embodiment of the present disclosure provides a registration update device, wherein the device includes:
  • the receiving module 210 is configured to receive the registration update notification sent by the network device
  • the sending module 220 is configured to send a registration update request to the network device directly according to the registration update notification.
  • the TA information processing device may be included in the UE.
  • the receiving module 210 and the sending module 220 may be program modules; after the program modules are executed by the processor, the functions of the aforementioned modules can be realized.
  • the receiving module 210 and the sending module 220 can be soft and hard modules; the soft and hard modules include but are not limited to various programmable arrays; the programmable arrays include but are not limited to: programmable and/or complex programmable arrays.
  • the receiving module 210 and the sending module 220 may be pure hardware modules; the pure hardware modules include but not limited to ASICs.
  • the sending module 220 is configured to send a registration update request to the network device without judging whether the registration update needs to be initiated. That is, the sending module 220 is configured to send a registration update request to the network device when the UE ignores its own judgment of whether the registration update needs to be initiated after receiving the registration update notification.
  • the sending module 220 is configured to ignore the received TA information broadcast by the base station and/or the saved RA information, and send a registration update request to the network device according to the registration update notification.
  • An embodiment of the present disclosure provides a communication device, including:
  • memory for storing processor-executable instructions
  • the processor is configured to execute the terminal control method and/or the information processing method provided by any of the foregoing technical solutions.
  • the processor may include various types of storage media, which are non-transitory computer storage media, and can continue to memorize and store information thereon after the communication device is powered off.
  • the communication device includes: an access device or a UE or a core network device.
  • the processor may be connected to the memory through a bus or the like, for reading the executable program stored on the memory, for example, at least one of the methods shown in FIG. 6 to FIG. 9 .
  • Fig. 12 is a block diagram of a UE 800 according to an exemplary embodiment.
  • UE 800 may be a mobile phone, computer, digital broadcast user equipment, messaging device, game console, tablet device, medical device, fitness device, personal digital assistant, etc.
  • UE 800 may include one or more of the following components: a processing component 802, a memory 804, a power supply component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and communication component 816 .
  • Processing component 802 generally controls the overall operations of UE 800, such as those associated with display, phone calls, data communications, camera operations, and recording operations.
  • the processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the above method.
  • processing component 802 may include one or more modules that facilitate interaction between processing component 802 and other components.
  • processing component 802 may include a multimedia module to facilitate interaction between multimedia component 808 and processing component 802 .
  • the memory 804 is configured to store various types of data to support operations at the UE 800 . Examples of such data include instructions for any application or method operating on UE800, contact data, phonebook data, messages, pictures, videos, etc.
  • the memory 804 can be implemented by any type of volatile or non-volatile storage device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Magnetic or Optical Disk Magnetic Disk
  • the power supply component 806 provides power to various components of the UE 800 .
  • Power components 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for UE 800 .
  • the multimedia component 808 includes a screen providing an output interface between the UE 800 and the user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user.
  • the touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may not only sense a boundary of a touch or swipe action, but also detect duration and pressure associated with the touch or swipe action.
  • the multimedia component 808 includes a front camera and/or a rear camera. When the UE800 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capability.
  • the audio component 810 is configured to output and/or input audio signals.
  • the audio component 810 includes a microphone (MIC), which is configured to receive an external audio signal when the UE 800 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. Received audio signals may be further stored in memory 804 or sent via communication component 816 .
  • the audio component 810 also includes a speaker for outputting audio signals.
  • the I/O interface 812 provides an interface between the processing component 802 and a peripheral interface module, which may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: a home button, volume buttons, start button, and lock button.
  • Sensor component 814 includes one or more sensors for providing various aspects of status assessment for UE 800 .
  • the sensor component 814 can detect the open/closed state of the device 800, the relative positioning of components, such as the display and the keypad of the UE800, the sensor component 814 can also detect the position change of the UE800 or a component of the UE800, and the user and Presence or absence of UE800 contact, UE800 orientation or acceleration/deceleration and temperature change of UE800.
  • Sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact.
  • Sensor assembly 814 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.
  • Communication component 816 is configured to facilitate wired or wireless communications between UE 800 and other devices.
  • the UE800 can access wireless networks based on communication standards, such as WiFi, 2G or 3G, or a combination thereof.
  • the communication component 816 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication.
  • NFC near field communication
  • the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wide Band (UWB) technology, Bluetooth (BT) technology and other technologies.
  • RFID Radio Frequency Identification
  • IrDA Infrared Data Association
  • UWB Ultra Wide Band
  • Bluetooth Bluetooth
  • UE 800 may be powered by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gates Arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic implementations for performing the methods described above.
  • ASICs Application Specific Integrated Circuits
  • DSPs Digital Signal Processors
  • DSPDs Digital Signal Processing Devices
  • PLDs Programmable Logic Devices
  • FPGAs Field Programmable Gates Arrays
  • controllers microcontrollers, microprocessors or other electronic implementations for performing the methods described above.
  • non-transitory computer-readable storage medium including instructions, such as the memory 804 including instructions, which can be executed by the processor 820 of the UE 800 to complete the above method.
  • the non-transitory computer readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.
  • An embodiment of the present disclosure provides a computer storage medium, the computer storage medium stores an executable program; after the executable program is executed by a processor, it can implement the TA information processing method provided by any of the aforementioned technical solutions, for example, as shown in the figure 6 to the method shown in Figure 9.
  • the computer storage medium includes, but is not limited to, various non-transitory storage media.
  • the non-transitory storage medium includes but is not limited to a hard disk, a flash disk, or a USB flash disk.

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Abstract

本公开实施例提供一种TA信息处理方法及装置、通信设备及存储介质。所述TA信息处理方法，可包括：直接根据所述注册更新通知，向所述网络设备发送注册更新请求。

Description

TA信息处理方法及装置、通信设备及存储介质 技术领域
本公开涉及无线通信技术领域但不限于无线通信技术领域，尤其涉及一种跟踪区(Tracking Area，TA)信息处理方法及装置、通信设备及存储介质。
背景技术
用户设备(User Equipment，UE)在初始连接到网络时，向网络发送注册请求，网络侧响应注册请求。在注册的过程中，网络侧创建并保存UE的注册区(Registration Area，RA)，通常注册区包含一个或多个TA。
非地面网络(Non-Terrestrial Networks，NTN)，可包括NTN小区。典型的NTN小区包括但不限于卫星小区。
NTN小区广播TA的TA信息，可能会同时广播多个TA的TA信息。
在一些情况下，网络侧判断需要UE发送注册更新，以更新UE的RA，但是UE接收到注册更新通知之后，判断出不需要执行所述注册更新，从而导致网络侧和UE之间对是否需要发起注册更新的判断出现冲突，并进一步导致流程处理异常。
发明内容
本公开实施例提供一种TA信息处理方法及装置、通信设备及存储介质。
本公开实施例第一方面提供一种TA信息处理方法，其中，由用户设备UE执行，所述方法包括：
接收广播的第一TA信息；其中，所述第一TA信息指示第一TA；
当所述第一TA中的至少一个TA包含在所述UE的RA内时，从所述第一TA中选择第二TA，其中，所述第二TA包含在所述RA内；
发送NAS请求消息，其中，所述NAS请求消息携带第二TA的第二TA信息。
本公开实施例第二方面提供一种注册更新方法，其中，由UE执行，所述方法包括：
接收网络设备发送的注册更新通知；
直接根据所述注册更新通知，向所述网络设备发送注册更新请求。
本公开实施例第三方面提供一种TA信息处理装置，其中，由用户设备UE执行，所述装置包括：
接收模块，被配置为接收广播的第一TA信息；其中，所述第一TA信息指示第一TA；
选择模块，被配置为当所述第一TA中的至少一个TA包含在所述UE的注册区RA内时，从所述第一TA中选择第二TA，其中，所述第二TA包含在所述RA内；
发送模块，被配置为发送非接入层NAS请求消息，其中，所述NAS请求消息携带第二TA的第二TA信息。
本公开实施例第三方面提供一种注册更新装置，其中，由UE执行，所述装置包括：
接收模块，被配置为接收网络设备发送的注册更新通知；
发送模块，被配置为直接根据所述注册更新通知，向所述网络设备发送注册更新请求。
本公开实施例第五方面提供一种通信设备，包括处理器、收发器、存储器及存储在存储器上并能够有所述处理器运行的可执行程序，其中，所述处理器运行所述可执行程序时执行如前述第一方面或第二方面提供的注册更新方法。
本公开实施例第六方面提供一种计算机存储介质，所述计算机存储介质存储有可执行程序；所述可执行程序被处理器执行后，能够实现前述的第一方面或第二方面提供的注册更新方法。
本公开实施例提供的技术方案，UE在接收到基站广播的第一TA信息，判断第一TA信息指示的第一TA中至少有一个TA包含在UE的RA内，将从第一TA中选择包含在RA的第二TA的第二TA信息携带在NAS请求消息中，如此，网络侧的AMF接收到之后，就不会触发UE注册更新，如此，可以避免UE侧和网络侧对注册更新判断的冲突，从而避免由网络侧和UE的判断不同而导致的异常流程的发生。
本公开实施例中UE在接收到触发更新通知之后，可以直接根据触发更新通知发起注册更新请求，而不自行判断是否需要发起注册更新，如此，可以避免UE侧和网络侧对注册更新判断的冲突，从而避免由网络侧和UE的判断不同而导致的异常流程的发生。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开实施例。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本发明实施例，并与说明书一起用于解释本发明实施例的原理。
图1是根据一示例性实施例示出的一种无线通信系统的结构示意图；
图2是根据一示例性实施例示出的一种无线小区的TA切换的示意图；
图3是根据一示例性实施例示出的另一种无线小区的TA切换的示意图；
图4是根据一示例性实施例示出的一种TA的注册更新的流程示意图；
图5是根据一示例性实施例示出的另一种无线小区的TA切换的示意图；
图6是根据一示例性实施例示出的一种TA信息处理方法的流程示意图；
图7是根据一示例性实施例示出的一种TA信息处理方法的流程示意图；
图8是根据一示例性实施例示出的一种TA信息处理方法的流程示意图；
图9是根据一示例性实施例示出的一种TA信息处理方法的流程示意图；
图10是根据一示例性实施例示出的一种TA信息处理装置的结构示意图；
图11是根据一示例性实施例示出的一种TA信息处理装置的结构示意图；
图12是根据一示例性实施例示出的一种UE的结构示意图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本发明实施例相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本发明实施例的一些方面相一致的装置和方法的例子。
在本公开实施例使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本公开实施例。在本公开实施例和所附权利要求书中所使用的单数形式的“一种”、“”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本公开实施例可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本公开实施例范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”。
请参考图1，其示出了本公开实施例提供的一种无线通信系统的结构示意图。如图1所示，无线通信系统是基于蜂窝移动通信技术的通信系统，该无线通信系统可以包括：若干个UE11以及若干个接入设备12。
其中，UE11可以是指向用户提供语音和/或数据连通性的设备。UE11可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，UE11可以是物联网UE，如传感器设备、移动电话(或称为“蜂窝”电话)和具有物联网UE的计算机，例如，可以是固定式、便携式、袖珍式、手持式、计算机内置的或者车载的装置。例如，站(Station，STA)、订户单元(subscriber unit)、订户站(subscriber station)、移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点、远程UE(remote terminal)、接入UE(access terminal)、用户装置(user terminal)、用户代理(user agent)、用户设备(user device)、或用户UE(user equipment，UE)。或者，UE11也可以是无人飞行器的设备。或者，UE11也可以是车载设备，比如，可以是具有无线通信功能的行车电脑，或者是外接行车电脑的无线通信设备。或者，UE11也可以是路边设备，比如，可以是具有无线通信功能的路灯、信号灯或者其它路边设备等。
接入设备12可以是无线通信系统中的网络侧设备。其中，该无线通信系统可以是第四代移动通信技术(the 4th generation mobile communication，4G)系统，又称长期演进(Long Term Evolution，LTE)系统；或者，该无线通信系统也可以是5G系统，又称新空口(new radio，NR)系统或5G NR系统。或者，该无线通信系统也可以是5G系统的再下一代系统。其中，5G系统中的接入网可以称 为NG-RAN(New Generation-Radio Access Network，新一代无线接入网)。或者，MTC系统。
其中，接入设备12可以是4G系统中采用的演进型接入设备(eNB)。或者，接入设备12也可以是5G系统中采用集中分布式架构的接入设备(gNB)。当接入设备12采用集中分布式架构时，通常包括集中单元(central unit，CU)和至少两个分布单元(distributed unit，DU)。集中单元中设置有分组数据汇聚协议(Packet Data Convergence Protocol，PDCP)层、无线链路层控制协议(Radio Link Control，RLC)层、媒体访问控制(Media Access Control，MAC)层的协议栈；分布单元中设置有物理(Physical，PHY)层协议栈，本公开实施例对接入设备12的具体实现方式不加以限定。
接入设备12和UE11之间可以通过无线空口建立无线连接。在不同的实施方式中，该无线空口是基于第四代移动通信网络技术(4G)标准的无线空口；或者，该无线空口是基于第五代移动通信网络技术(5G)标准的无线空口，比如该无线空口是新空口；或者，该无线空口也可以是基于5G的更下一代移动通信网络技术标准的无线空口。
在一些实施例中，UE11之间还可以建立E2E(End to End，端到端)连接。比如车联网通信(vehicle to everything，V2X)中的V2V(vehicle to vehicle，车对车)通信、V2I(vehicle to Infrastructure，车对路边设备)通信和V2P(vehicle to pedestrian，车对人)通信等场景。
在一些实施例中，上述无线通信系统还可以包含网络管理设备13。
若干个接入设备12分别与网络管理设备13相连。其中，网络管理设备13可以是无线通信系统中的核心网设备，比如，该网络管理设备13可以是演进的数据分组核心网(Evolved Packet Core，EPC)中的移动性管理实体(Mobility Management Entity，MME)。或者，该网络管理设备也可以是其它的核心网设备，比如服务网关(Serving GateWay，SGW)、公用数据网网关(Public Data Network GateWay，PGW)、策略与计费规则功能单元(Policy and Charging Rules Function，PCRF)或者归属签约用户服务器(Home Subscriber Server，HSS)等。对于网络管理设备13的实现形态，本公开实施例不做限定。
UE通过地面蜂窝系统接入网络，通常无线小区向UE广播单个跟踪区TA的TAC，UE使用所述TA注册到网络。此后在开展业务过程中，网络可以根据所述TA寻呼UE。UE通过卫星系统接入网络，由于卫星的高度，移动等原因，为了更好的寻呼UE，卫星小区支持向UE广播单个或者多个TA的TAC。
如图2所示，卫星广播单个TA的跟踪区码(Tracking Area Code，TAC)TAC。以UE处于TA1为例，T1时刻，UE接收到卫星1广播的TAC1。T2时刻，卫星1移动到TA1和TA2交界处，此时如果卫星1对TA2的覆盖大于对TA1的覆盖，就广播TAC2，UE接收到卫星1广播的TAC2信息。T3时刻，卫星1已完全移出TA1覆盖区域，由移入该覆盖区域的卫星2提供覆盖，向地面广播TAC1，UE接收广播TAC1信息。因此当处于TA1的UE在不同时刻收到的广播TAC为TAC1，TAC2，TAC1，TAC2…。
图2卫星小区广播单个TAC。
如图3所示，卫星广播多个TAC。以UE处于TA1为例，T1时刻，卫星1广播TAC1，UE接 收到卫星1广播的TAC1信息。T2时刻，卫星1移动到TA1和TA2交界处，此时卫星1广播TAC1+TAC2，UE接收到卫星1广播的TAC1+TAC2信息。T3时刻，卫星1已完全移出TA1覆盖区域，由移入该覆盖区域的卫星2提供覆盖，向地面广播TAC1，UE接收到卫星2广播的TAC1信息。因此当处于TA1的UE在不同时刻收到的广播TAC为TAC1，TAC1+TAC2，TAC1，TAC1+TAC2…。
图2卫星小区广播多个TAC。
卫星通信系统可以使用上述任一种广播模式，也可以两种模式结合使用。
图4所示为一种UE的注册更新流程，可包括：
1)UE向接入网或者无线接入网(AN/RAN)设备发送注册请求消息。消息包含接入网(Access Network，AN)参数、注册类型、用户隐藏标识码(subscription concealed identifier，SUCI)或第5代移动通信的用户临时标识码(5Generation temporary UE identity，GUTI，5G-GUTI)或寻呼提前指示(Paging Early Indication，PEI)、请求的网络切片选择辅助信息network slice selection assistance information，NSSAI)、最后访问可用的跟踪区标识(Tracking Area Identification，TAI)等。
注册类型指示终端是要执行初始注册、移动注册更新、定期注册更新还是紧急注册。为了帮助AMF为UE确定注册区域，可以包括上次访问的TAI。
2)(R)AN根据(R)AT选择AMF并请求NSSAI。如果(R)AN不能选择适当的AMF，AN/RAN将注册请求消息转发给(R)AN中配置的AMF。
3)(R)AN向新的AMF发送N2消息。该消息包含N2参数、注册请求等。N2参数包括选定的PLMN ID、位置信息和与UE所在单元相关的单元标识。
4)如果服务中的AMF自上次注册过程以来发生了变化，新的AMF可以从旧的AMF中检索存储的UE的SUPI和UE上下文。
5)如果终端没有提供SUCI，或者从旧的AMF检索到SUCI，则新AMF向终端发起身份请求程序，请求SUCI。
6)新的AMF可以通过调用AUSF来决定启动UE认证。AMF根据SUPI或SUCI选择AUSF。
7)如果AMF自上次注册程序以来发生了变化，或者如果UE提供的SUPI没有引用AMF中的有效上下文，则基于SUPI的AMF选择一个UDM并使用该UDM注册。如果AMF没有UE的订阅数据，AMF从UDM检索访问和移动性订阅数据等。
8)新的AMF对策略控制功能PCF执行AM策略关联(Policy Association)建立/修改。
9)如果在步骤1的注册请求中包含一个待激活的PDU会话列表，AMF将发送Nsmf_PDUSession_UpdateSMContext request给与PDU会话相关的会话管理功能SMF(Session Management Function)，以激活这些PDU会话的用户面连接。
10)新的AMF向终端发送注册接受(Registration Accept)消息，表示注册请求已被接受。消息内容包括注册区域的区域信息、移动限制的信息、允许的NSSAI、严格周期的注册计时器指示等。如果AMF分配了新的注册区域，则需要将该注册区域的区域信息发送给终端。如果注册接受消息中没有包含注册区域的区域信息，则终端将认为旧的注册区域有效。如果移动限制申请的终端和注册 类型不是紧急注册，则包括移动限制的信息。
11)注册更新的其他步骤。
UE在初始注册过程中，AMF获取到UE的当前TA，并根据所述TA及其他TA(例如最近访问的TA，或者邻近TA)构建注册区域(Registration Area，RA)。此后AMF根据所述RA进行UE寻呼。当用户发生移动，UE所处的当前TA发生变化时，UE发起注册更新，更新所述RA包含最新的UE当前TA。
在卫星接入的无线小区指示支持广播多个TAC的情况下，现有技术定义了UE注册到网络之后，如果至少有一个广播的TAC对应的TA包含在RA时，UE就不需要执行注册更新过程；当广播的TAC对应的任何一个TA都不包含在RA时，UE需要发起注册更新，以更新RA。
如图5所示，在T1时刻，卫星小区覆盖TA1，TA2，TA5，广播TAC1，TAC2和TAC5，假设此时UE位于TA1，发起网络注册请求，在注册请求中，用户位置信息(User Location Information，ULI)包含了TAC1发送给AMF。AMF为所述UE创建RA，包含TAC1。为了避免UE移动引发的频繁注册更新，与TA1邻近的一个或多个TA的TAC也可能加入到RA中。注册成功后，UE的RA包含{TAC1，TAC2，TAC4，TAC5}。
在T2时刻，卫星小区移动到了如图5所示的虚线圈区域，此时广播TAC2，TAC5和TAC6。同时UE也从TA1移动到了TA6。此时如果UE向网络发起NAS请求，ULI包含TAC6发送给AMF。当AMF接收所述请求信息后，从网络角度看，由于TAC6不包含在UE RA{TAC1，TAC2，TAC4，TAC5}内，AMF需要触发UE发起注册更新过程，以更新RA包含TAC6。当UE接收到注册更新的触发消息时，根据现有技术，由于UE接收的广播信息TAC2，TAC5和TAC6中的TAC2，TAC5都包含在当前的UE RA中，又不需要发起注册更新。此时网络侧需要触发注册更新，UE侧不需要发起注册更新的异常冲突就会出现，进而有可能导致流程处理异常。
如图6所示，本公开实施例提供一种TA信息处理方法，由UE执行，所述方法包括：
S110：接收广播的第一TA信息；其中，所述第一TA信息指示第一TA；
S120：当所述第一TA中至少有一个TA包含在所述UE的RA内时，从所述第一TA中选择第二TA，其中，所述第二TA包含在所述RA内；
S130：发送NAS请求消息，其中，所述NAS请求消息携带第二TA的第二TA信息。
本公开实施例中的UE可以为任意类型的UE，例如，手机、平板电脑、可穿戴式设备、车载设备或者地面行走的机器人或者低空飞行的飞行器等。
该UE可为NTN UE，可以接入到NTN小区。
在S110中接收广播的第一TA信息之后，会逐一确定第一TA中的每一个TA是否均包含在RA内，如果发现所述第一TA中有一个或多个TA包含在RA内，则会从第一TA中选择一个或多个TA作为第二TA，并且选择的第二TA是包含在RA内的。
在发送NAS请求消息中，如此，核心网的网络设备接收到这种NAS请求消息之后，发现TA 信息指示的TA都包含在UE的RA内，则会确定不触发UE注册更新，如此，就会避免UE侧和网络侧对是否需要注册更新的判断不一致的发生，减少了异常流程的发生。
在一个实施例中，所述方法还包括：当所述第一TA中的TA均不包含在所述RA内时，从所述第一TA中选择第三TA，
发送注册更新请求，其中，所述注册更新请求消息携带第三TA的第三TA信息。
若第一TA中的TA均不包含在UE的RA内时，可以从第一TA中任意选择一个或多个TA作为所述第三TA通过注册更新请求发送给网络侧，如此，网络侧(例如，AMF)根据第三TA信息确定出第三TA不包含在UE的RA内，会接受注册更新请求，对UE的RA进行更新，从而完成注册更新流程。
所述第三TA为：被所述第一TA包含但不被所述注册更新前的RA包含的任一TA。
所述第三TA可为一个或多个。示例性地，所述第三TA可为一个，且为所述UE从所述第一TA中随机选择的一个TA或者，根据UE的位置确定出的UE当前所处的TA。
在一些实施例中，所述第二TA为：被所述第一TA包含的并且被所述RA包含的任一TA。若第一TA中的部分TA包含在UE的RA内时，选择的第一TA中任意一个或多个包含在RA内的TA作为所述第二TA，并将第二TA的第二TA信息上报给网络侧。
所述第一TA信息、第二TA信息以及所述第三TA信息都可以是TAC或者跟踪区标识(Tracking Area Identification，TAI)。
所述第二TA可以为一个或多个，示例性地，所述第二TA为一个。示例性地，所述第二TA可为：属于第一TA且包含在UE的RA内中随机选择的TA。
在一个实施例中，所述NAS请求消息包括以下至少之一：
服务请求消息；
注册更新请求消息；
协议数据单元PDU会话建立请求消息；
PDU会话建立修改请求消息。
服务请求消息，可为UE请求相关服务时发送的请求，例如，视频服务和/或语音服务等。
所述注册更新请求消息可为：UE在移动到RA之外的TA时发送的。
所述PDU会话建立请求消息，用于UE向网络侧请求建立新的PDU会话。
所述PDU会话修改请求消息，用于UE向网络侧请求修改当前已建立的PDU会话。
在UE向网络侧发送NAS请求消息时，携带TA信息，可以供网络侧的网络设备(例如，AMF)确定是否需要触发UE发起注册更新。注册更新的流程可以重用初始注册的流程，参见前述图5所示。
如图7所示，本公开实施例提供一种注册更新方法，其中，由UE执行，所述方法包括：
S210：接收网络设备发送的注册更新通知；
S220：直接根据所述注册更新通知，向所述网络设备发送注册更新请求。
本公开实施例中的UE可以为任意类型的UE，例如，手机、平板电脑、可穿戴式设备、车载设备或者地面行走的机器人或者低空飞行的飞行器等。
该UE可为NTN UE，可以接入到NTN小区。
此处的网络设备包括但不限于AMF。
接收到注册更新通知之后，UE直接根据所述注册更新通知发起注册更新。
如此，UE直接根据网络设备发送的注册更新通知发起注册更新，忽略了UE自身判断是否需要发起注册更新的过程，从而避免了UE侧和网络侧就是否需要发起注册更新判断不一致的现象发生。
在一些实施例中，所述S220可包括：
在收到注册更新通知后，忽略自身判断注册更新是否需要发起的情况下，向所述网络设备发送注册更新请求。
UE收到注册更新通知之后，将不进行是否需要发起注册更新的判断，即跳过UE的注册更新的判断步骤，直接向网络设备发送注册更新请求。
即在一些实施例中，S220可包括：在不判断注册更新是否需要发起的情况下，根据注册更新通知向所述网络设备发送注册更新请求。
在一些实施例中，所述S220可包括：
忽略基站广播的TA信息和/或所述UE保存的RA信息，根据所述注册更新通知向所述网络设备发送注册更新请求。
在本公开实施例中，UE将忽略基站广播的TA信息和/或UE本地保存的RA信息，所述RA信息指示的UE的RA。通过忽略基站广播的TA信息和/或自身保存的RA信息，则UE就无法得到是否需要进行注册更新的判断结果，故从而不会产生与网络侧得到的是否注册更新的结果冲突的判断结果，此时，UE相当于直接根据网络侧发送的注册更新通知，向网络设备发送注册更新请求。
在一些实施例中，所述注册更新通知可以是由单独的NAS消息发送给UE的，还可以是携带在所述NAS请求消息的响应消息中的指示信息。例如，该响应消息可为NAS请求消息的拒绝消息，该拒绝消息可以携带有网络设备拒绝NAS请求的原因值。若该原因值指示需要注册更新，进行RA更新，则该原因值即为所述注册更新通知。
UE收到注册更新通知之后，直接向网络设备发送注册更新的过程可以重用初始注册过程，可以参见前述图5所示。
本公开实施例提供一种TA信息处理方法可包括：
当网络(例如AMF)通知UE发起注册更新时，UE根据所述注册更新通知，无需再判断是否需要发起注册更新过程，即网络要求注册更新的优先级高于UE。
以图3为例，假设UE位于TA1，发起初始注册请求，gNB将TAC1包含在ULI中发送给AMF，初始注册成功后，AMF构建并保存RA，所述RA包含TAC1，TAC2，TAC4，TAC5，AMF将所述RA返回给UE保存。TAC1指示TA1；TAC2指示TA2；TAC4指示TA4；TAC5指示TA5。
此后UE移动至TA6，发起服务请求(service request)消息，卫星小区也发生了移动，向UE广播TAC2，TAC5和TAC6，UE发起服务请求过程中的UE和AMF处理可如图8所示：
1.UE和核心网之间完成初始注册流程的处理，例如，
在T1时刻，UE位于TA1，通过卫星接入网络，完成初始接入注册过程。
2.AMF在处理UE注册请求消息时，确定所述UE的注册区RA包含TAC1，TAC2，TAC4，TAC5。保存UE的RA的信息。
3.将RA的信息发送给UE，具体如，AMF将RA包含在注册接受消息中，返回给UE。UE保存所述RA信息。
4.UE向网络侧发送NAS请求消息，例如，UE在T2时刻发起服务请求(service request)消息。
5.gNB接收到服务请求消息，确定出UE的当前TA，该当前TA即为UE当前所处的TA，例如，gNB接收所述消息后，确定UE当前TA＝TA6。
6.gNB将服务请求消息发送给AMF，该服务请求消息包括：UE的当前TA，即TA6的TAC6，具体如，gNB将TA6的TAC6与服务请求(service request)消息一起发送AMF。
7.确定执行注册更新，示例性地，AMF接收NAS请求消息，判断TAC6不包含在RA中，需要触发注册更新。此处的NAS请求消息包括前述的服务请求消息。
8.服务请求的剩余步骤，示例性地，AMF完成服务请求(service request)消息对应流程的其余步骤。
9.服务拒绝群消息，携带有原因值，例如，AMF向UE返回服务拒绝(service reject)消息，携带原因值，说明UE需要注册更新。该消息可以作为触发UE发起注册更新的消息。或者AMF返回service reject消息，执行步骤10。
10.触发UE注册更新，例如，AMF向UE发起触发注册更新的消息。
11.注册更新请求，该注册更新请求可携带TA6的信息(TAC6)，例如，UE收到网络要求注册更新的信息后，忽略UE判断是否需要发起注册更新的过程，直接发起注册更新请求。gNB将UE当前位置对应的TA的信息TAC6与注册更新请求(registration update request)消息一起发送给AMF。
12.更新并保存UE的RA，更新RA包含TAC2，TAC4，TAC5，TAC6。
13.将更新后的RA的信息发送给UE，示例性地，AMF返回注册更新成功消息，将更新后的RA发送给UE保存。
14.重新发起服务请求消息。
本公开实施例提供的另一种TA信息处理方法包括：
UE判断如果接收到的广播的TAC发生变化，在发起NAS程序时，UE优先选择被RA包含的TA的TAC。UE在NAS请求消息中包含所述TAC发起NAS程序。
还是以图3为例，假设UE位于TA1，发起初始注册请求，由UE选择TAC1发送给gNB。
gNB将此包含在ULI中发送给AMF，初始注册成功后，AMF构建并保存RA，所述RA包含TAC1，TAC2，TAC4，TAC5，AMF将所述RA返回给UE保存。此后UE移动至TA6，发起服务请求(service request)消息，卫星小区也发生了移动，向UE广播TAC2，TAC5和TAC6，UE发起服务请求(service request)消息过程中的UE和AMF处理如图9所示：
1.UE和核心网之间完成初始注册流程的处理，具体可包括：
在T1时刻，UE位于TA1，通过卫星接入网络，完成初始接入注册过程。
2.AMF保存UE的RA的信息，AMF在处理UE注册请求时，确定所述UE的注册区RA包含TAC1，TAC2，TAC4，TAC5。
3.将UE的RA的信息发送给UE，AMF将RA包含在注册接受消息中，返回给UE。UE保存所述RA信息。
4.确定广播的TA的信息改变，基于RA选择一个TA，例如选择TAC5,UE在T2时刻发起服务请求(service request)消息，在发送之前，UE判断接收的广播TAC与此前发生了变化，UE基于步骤2获取的RA，从广播TAC消息中选择一个被RA包含的TAC，例如TAC5发送给网络。
5.UE通过gNB向AMF发送服务请求消息，携带有TAC5，例如，UE发送服务请求(service request)消息包含TAC5。
6.剩余服务请求的步骤，例如，AMF接收上述服务请求消息后，判断TAC5包含在RA中，不需要发起注册更新，并处理服务请求消息的其他步骤。
7.AMF向UE返回服务接受(service accept)消息。
本公开实施例6通过UE在发送NAS程序前，首先根据RA，从广播TAC中选取一个被RA包含的TAC包含在NAS请求消息中发送给网络，如此可以避免网络触发UE发起注册更新的操作。如果根据RA，UE从当前广播TAC无法选取任何一个被RA包含的TA，则任选从所述广播TAC任选一个TAC发起注册更新流程。
如图10所示，本公开实施例提供一种TA信息处理装置，其中，所述装置包括：
接收模块110，被配置为接收广播的第一TA信息；其中，所述第一TA信息指示第一TA；
选择模块120，被配置为当所述第一TA中的至少一个TA包含在所述UE的注册区RA内时，从所述第一TA中选择第二TA，其中，所述第二TA包含在所述RA内；
发送模块130，被配置为发送非接入层NAS请求消息，其中，所述NAS请求消息携带第二TA的第二TA信息。
该TA信息处理装置可包含在UE内。
在一个实施例中，所述接收模块110、选择模块120及发送模块130可为程序模块；所述程序模块被处理器执行之后，能够实现前述各个模块的功能。
在另一个实施例中，所述接收模块110、选择模块120及发送模块130可为软硬结合模块；所述软硬结合模块包括但不限于各种可编程阵列；所述可编程阵列包括但不限于：现场可编程和/或复 杂可编程阵列。
在还有一个实施例中，所述接收模块110、选择模块120及发送模块130可为纯硬件模块；所述纯硬件模块包括但不限于专用集成电路。
在一个实施例中，所述选择模块120，还被配置为当所述第一TA中的TA均不包含在所述RA内时，从所述第一TA中选择第三TA，
发送模块130，被配置为发送注册更新请求，其中，所述注册更新请求消息携带第三TA的第三TA信息。
在一个实施例中，所述第三TA为：
被所述第一TA包含但不被所述RA包含的任一TA。
在一个实施例中，所述第二TA为：
被所述第一TA包含的并且被所述RA包含的任一TA。
如图11所示，本公开实施例提供一种注册更新装置，其中，所述装置包括：
接收模块210，被配置为接收网络设备发送的注册更新通知；
发送模块220，被配置为直接根据所述注册更新通知，向所述网络设备发送注册更新请求。
该TA信息处理装置可包含在UE内。
在一个实施例中，所述接收模块210及发送模块220可为程序模块；所述程序模块被处理器执行之后，能够实现前述各个模块的功能。
在另一个实施例中，所述接收模块210及发送模块220可为软硬结合模块；所述软硬结合模块包括但不限于各种可编程阵列；所述可编程阵列包括但不限于：现场可编程和/或复杂可编程阵列。
在还有一个实施例中，所述接收模块210及发送模块220可为纯硬件模块；所述纯硬件模块包括但不限于专用集成电路。
在一个实施例中，所述发送模块220，被配置为在不判断注册更新是否需要发起的情况下，向所述网络设备发送注册更新请求。即所述发送模块220，被配置为在接收注册更新通知后，UE忽略自身判断注册更新是否需要发起的情况下，向所述网络设备发送注册更新请求。
在一个实施例中，所述发送模块220，被配置为忽略接收的基站广播的TA信息和/或保存的RA信息，根据所述注册更新通知向所述网络设备发送注册更新请求。
本公开实施例提供一种通信设备，包括：
用于存储处理器可执行指令的存储器；
处理器，分别存储器连接；
其中，处理器被配置为执行前述任意技术方案提供的终端的控制方法和/或信息处理方法。
处理器可包括各种类型的存储介质，该存储介质为非临时性计算机存储介质，在通信设备掉电之后能够继续记忆存储其上的信息。
这里，所述通信设备包括：接入设备或UE或者核心网设备。
所述处理器可以通过总线等与存储器连接，用于读取存储器上存储的可执行程序，例如，如图6至图9所示的方法的至少其中之一。
图12是根据一示例性实施例示出的一种UE800的框图。例如，UE 800可以是移动电话，计算机，数字广播用户设备，消息收发设备，游戏控制台，平板设备，医疗设备，健身设备，个人数字助理等。
参照图12，UE800可以包括以下一个或多个组件：处理组件802，存储器804，电源组件806，多媒体组件808，音频组件810，输入/输出(I/O)的接口812，传感器组件814，以及通信组件816。
处理组件802通常控制UE800的整体操作，诸如与显示，电话呼叫，数据通信，相机操作和记录操作相关联的操作。处理组件802可以包括一个或多个处理器820来执行指令，以完成上述的方法的全部或部分步骤。此外，处理组件802可以包括一个或多个模块，便于处理组件802和其他组件之间的交互。例如，处理组件802可以包括多媒体模块，以方便多媒体组件808和处理组件802之间的交互。
存储器804被配置为存储各种类型的数据以支持在UE800的操作。这些数据的示例包括用于在UE800上操作的任何应用程序或方法的指令，联系人数据，电话簿数据，消息，图片，视频等。存储器804可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
电源组件806为UE800的各种组件提供电力。电源组件806可以包括电源管理系统，一个或多个电源，及其他与为UE800生成、管理和分配电力相关联的组件。
多媒体组件808包括在所述UE800和用户之间的提供一个输出接口的屏幕。在一些实施例中，屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板，屏幕可以被实现为触摸屏，以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。所述触摸传感器可以不仅感测触摸或滑动动作的边界，而且还检测与所述触摸或滑动操作相关的持续时间和压力。在一些实施例中，多媒体组件808包括一个前置摄像头和/或后置摄像头。当UE800处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件810被配置为输出和/或输入音频信号。例如，音频组件810包括一个麦克风(MIC)，当UE800处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器804或经由通信组件816发送。在一些实施例中，音频组件810还包括一个扬声器，用于输出音频信号。
I/O接口812为处理组件802和外围接口模块之间提供接口，上述外围接口模块可以是键盘，点击轮，按钮等。这些按钮可包括但不限于：主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件814包括一个或多个传感器，用于为UE800提供各个方面的状态评估。例如，传感器组件814可以检测到设备800的打开/关闭状态，组件的相对定位，例如所述组件为UE800的显示器和小键盘，传感器组件814还可以检测UE800或UE800一个组件的位置改变，用户与UE800接触的存在或不存在，UE800方位或加速/减速和UE800的温度变化。传感器组件814可以包括接近传感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件814还可以包括光传感器，如CMOS或CCD图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件814还可以包括加速度传感器，陀螺仪传感器，磁传感器，压力传感器或温度传感器。
通信组件816被配置为便于UE800和其他设备之间有线或无线方式的通信。UE800可以接入基于通信标准的无线网络，如WiFi，2G或3G，或它们的组合。在一个示例性实施例中，通信组件816经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中，所述通信组件816还包括近场通信(NFC)模块，以促进短程通信。例如，在NFC模块可基于射频识别(RFID)技术，红外数据协会(IrDA)技术，超宽带(UWB)技术，蓝牙(BT)技术和其他技术来实现。
在示例性实施例中，UE800可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处理器或其他电子元件实现，用于执行上述方法。
在示例性实施例中，还提供了一种包括指令的非临时性计算机可读存储介质，例如包括指令的存储器804，上述指令可由UE800的处理器820执行以完成上述方法。例如，所述非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
本公开实施例提供一种计算机存储介质，所述计算机存储介质存储有可执行程序；所述可执行程序被处理器执行后，能够实现前述任意技术方案提供的TA信息处理方法，例如，如图6至图9所示的方法。
该计算机存储介质包括但不限于各种非瞬间存储介质。该非瞬间存储介质包括但不限于硬盘、闪盘或者U盘等。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本发明的其它实施方案。本公开旨在涵盖本发明的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本发明的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本发明的真正范围和精神由下面的权利要求指出。
应当理解的是，本发明并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本发明的范围仅由所附的权利要求来限制。

Claims (16)

  1. 一种注册更新方法，其中，由UE执行，所述方法包括：
    接收网络设备发送的注册更新通知；
    直接根据所述注册更新通知，向所述网络设备发送注册更新请求。
  2. 根据权利要求1所述的方法，其中，所述直接根据所述注册更新通知，向所述网络设备发送注册更新请求，包括：
    在不判断注册更新是否需要发起的情况下，根据所述注册更新通知向所述网络设备发送注册更新请求。
  3. 根据权利要求1或2所述的方法，其中，所述直接根据所述注册更新通知，向所述网络设备发送注册更新请求，包括：
    忽略接收的基站广播的TA信息和/或保存的RA信息，根据所述注册更新通知向所述网络设备发送注册更新请求。
  4. 一种跟踪区TA信息处理方法，其中，由用户设备UE执行，所述方法包括：
    接收广播的第一TA信息；其中，所述第一TA信息指示第一TA；
    当所述第一TA中的至少一个包含在所述UE的注册区RA内时，从所述第一TA中选择第二TA，其中，所述第二TA包含在所述RA内；
    发送非接入层NAS请求消息，其中，所述NAS请求消息携带第二TA的第二TA信息。
  5. 根据权利要求4所述的方法，其中，所述方法还包括：
    当所述第一TA中的TA均不包含在所述RA内时，从所述第一TA中选择第三TA，
    发送注册更新请求，其中，所述注册更新请求消息携带第三TA的第三TA信息。
  6. 根据权利要求5所述的方法，其中，所述第三TA为：
    被所述第一TA包含但不被所述RA包含的任一TA。
  7. 根据权利要求4或5所述的方法，其中，所述第二TA为：
    被所述第一TA包含的并且被所述RA包含的任一TA。
  8. 一种注册更新装置，其中，所述装置包括：
    接收模块，被配置为接收网络设备发送的注册更新通知；
    发送模块130，被配置为直接根据所述注册更新通知，向所述网络设备发送注册更新请求。
  9. 根据权利要求8所述的装置，其中，所述发送模块130，被配置为在不判断注册更新是否需要发起的情况下，根据所述注册更新通知向所述网络设备发送注册更新请求。
  10. 根据权利要求8或9所述的装置，其中，所述发送模块130，被配置为忽略接收的基站广播的TA信息和/或保存的RA信息，根据所述注册更新通知向所述网络设备发送注册更新请求。
  11. 一种TA信息处理装置，其中，所述装置包括：
    接收模块，被配置为接收广播的第一TA信息；其中，所述第一TA信息指示第一TA；
    选择模块，被配置为当所述第一TA中至少有一个TA包含在所述UE的注册区RA内时，从所述第一TA中选择第二TA，其中，所述第二TA包含在所述RA内；
    发送模块，被配置为发送非接入层NAS请求消息，其中，所述NAS请求消息携带第二TA的第二TA信息。
  12. 根据权利要求11所述的装置，其中，所述选择模块，还被配置为当所述第一TA中的TA均不包含在所述RA内时，从所述第一TA中选择第三TA，
    发送模块，被配置为发送注册更新请求，其中，所述注册更新请求消息携带第三TA的第三TA信息。
  13. 根据权利要求11所述的装置，其中，所述第三TA为：
    被所述第一TA包含但不被所述RA包含的任一TA。
  14. 根据权利要求11或12所述的装置，其中，所述第二TA为：
    被所述第一TA包含的并且被所述RA包含的任一TA。
  15. 一种通信设备，包括处理器、收发器、存储器及存储在存储器上并能够有所述处理器运行的可执行程序，其中，所述处理器运行所述可执行程序时执行如权利要求1至3或4至7任一项提供的方法。
  16. 一种计算机存储介质，所述计算机存储介质存储有可执行程序；所述可执行程序被处理器执行后，能够实现如权利要求1至3或4至7任一项提供的方法。
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