CN116391401A

CN116391401A - TA information processing method and device, communication equipment and storage medium

Info

Publication number: CN116391401A
Application number: CN202180003579.5A
Authority: CN
Inventors: 沈洋
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2023-07-04
Also published as: WO2023070326A1

Abstract

The embodiment of the disclosure provides a TA information processing method and device, communication equipment and storage medium. The TA information processing method may include: and directly sending a registration update request to the network equipment according to the registration update notification.

Description

TA information processing method and device, communication equipment and storage medium

Technical Field

The present disclosure relates to the field of wireless communication technology, and in particular, to a Tracking Area (TA) information processing method and apparatus, a communication device, and a storage medium.

Background

When the User Equipment (UE) is initially connected to the network, a registration request is sent to the network, and the network side responds to the registration request. During registration, the network side creates and maintains a registration area (Registration Area, RA) for the UE, typically containing one or more TAs.

Non-terrestrial networks (Non-Terrestrial Networks, NTNs) may include NTN cells. Typical NTN cells include, but are not limited to, satellite cells.

The NTN cell broadcasts TA information of the TA, and may broadcast TA information of multiple TAs simultaneously.

In some cases, the network side determines that the UE needs to send a registration update to update RA of the UE, but after receiving the registration update notification, the UE determines that the registration update does not need to be executed, which results in a conflict between the network side and the UE in determining whether to initiate the registration update, and further results in abnormal flow processing.

Disclosure of Invention

The embodiment of the disclosure provides a TA information processing method and device, communication equipment and storage medium.

A first aspect of an embodiment of the present disclosure provides a TA information processing method, where the method is performed by a user equipment UE, and the method includes:

receiving broadcasted first TA information; wherein the first TA information indicates a first TA;

selecting a second TA from the first TAs when at least one of the first TAs is contained within an RA of the UE, wherein the second TA is contained within the RA;

and sending an NAS request message, wherein the NAS request message carries second TA information of a second TA.

A second aspect of an embodiment of the present disclosure provides a registration update method, wherein the method is performed by a UE, and the method includes:

receiving a registration update notification sent by network equipment;

and directly sending a registration update request to the network equipment according to the registration update notification.

A third aspect of an embodiment of the present disclosure provides a TA information processing apparatus, where the apparatus is executed by a user equipment UE, and 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 TAs when at least one of the first TAs is contained within a registration area, RA, of the UE, wherein the second TA is contained within the RA;

and the sending module is configured to send a non-access stratum (NAS) request message, wherein the NAS request message carries second TA information of a second TA.

A third aspect of an embodiment of the present disclosure provides a registration update apparatus, wherein the apparatus is performed by a UE, the apparatus comprising:

a receiving module configured to receive a registration update notification sent by a network device;

and the sending module is configured to send a registration update request to the network equipment directly according to the registration update notification.

A fifth aspect of the disclosed embodiments provides a communication device comprising 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 executes the registration update method as provided in the first or second aspect.

A sixth aspect of the disclosed embodiments provides a computer storage medium storing an executable program; the executable program, when executed by the processor, can implement the registration updating method provided in the foregoing first aspect or second aspect.

According to the technical scheme provided by the embodiment of the disclosure, when the UE receives the first TA information broadcast by the base station, at least one TA in the first TA indicated by the first TA information is judged to be contained in the RA of the UE, and the second TA information of the second TA which is selected from the first TA and is contained in the RA is carried in the NAS request message, so that after the AMF of the network side receives the information, the UE registration update is not triggered, and therefore, the conflict of the UE side and the network side on the registration update judgment can be avoided, and the occurrence of abnormal processes caused by different judgment of the network side and the UE is avoided.

In the embodiment of the disclosure, after receiving the trigger update notification, the UE may directly initiate a registration update request according to the trigger update notification, without automatically determining whether to initiate registration update, so that collision of the UE side and the network side on registration update determination can be avoided, and thus occurrence of abnormal flows caused by different determinations of the network side and the UE is avoided.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of embodiments of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the embodiments of the invention.

Fig. 1 is a schematic diagram of a wireless communication system according to an exemplary embodiment;

fig. 2 is a schematic diagram illustrating TA handover of a wireless cell in accordance with an example embodiment;

fig. 3 is a schematic diagram illustrating TA handover of another wireless cell in accordance with an example embodiment;

fig. 4 is a flow diagram illustrating a registration update of a TA according to an example embodiment;

fig. 5 is a schematic diagram illustrating TA handover of another wireless cell in accordance with an example embodiment;

fig. 6 is a flowchart illustrating a TA information processing method according to an exemplary embodiment;

fig. 7 is a flowchart illustrating a TA information processing method according to an exemplary embodiment;

fig. 8 is a flowchart illustrating a TA information processing method according to an exemplary embodiment;

Fig. 9 is a flowchart illustrating a TA information processing method according to an exemplary embodiment;

fig. 10 is a schematic diagram showing a structure of a TA information processing apparatus according to an exemplary embodiment;

fig. 11 is a schematic structural view of a TA information processing apparatus according to an exemplary embodiment;

fig. 12 is a schematic diagram illustrating a structure of a UE according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with embodiments of the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of embodiments of the invention as detailed in the accompanying claims.

The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of embodiments of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "responsive to a determination", depending on the context.

Referring to fig. 1, a schematic structural diagram of a wireless communication system according to an embodiment of the disclosure is shown. As shown in fig. 1, the wireless communication system is a communication system based on a cellular mobile communication technology, and may include: a number of UEs 11 and a number of access devices 12.

Wherein UE11 may be a device that provides voice and/or data connectivity to a user. The UE11 may communicate with one or more core networks via a radio access network (Radio Access Network, RAN), and the UE11 may be an internet of things UE such as a sensor device, a mobile phone (or "cellular" phone) and a computer with an internet of things UE, for example, a fixed, portable, pocket, hand-held, computer-built-in or vehicle-mounted device. Such as a Station (STA), subscriber unit (subscriber unit), subscriber Station (subscriber Station), mobile Station (mobile Station), mobile Station (mobile), remote Station (remote Station), access point, remote UE (remote terminal), access UE (access terminal), user terminal, user agent (user agent), user device (user equipment), or user UE (UE). Alternatively, the UE11 may be an unmanned aerial vehicle device. Alternatively, the UE11 may be a vehicle-mounted device, for example, a laptop with a wireless communication function, or a wireless communication device externally connected to the laptop. Alternatively, the UE11 may be a roadside device, for example, a street lamp, a signal lamp, or other roadside devices having a wireless communication function.

Access device 12 may be a network-side device in a wireless communication system. Wherein 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 (Long Term Evolution, LTE) system; alternatively, the wireless communication system may be a 5G system, also known as a New Radio (NR) system or a 5G NR system. Alternatively, the wireless communication system may be a next generation system of the 5G system. Among them, the access network in the 5G system may be called NG-RAN (New Generation-Radio Access Network, new Generation radio access network). Or, an MTC system.

Wherein the access device 12 may be an evolved access device (eNB) employed in a 4G system. Alternatively, access device 12 may be an access device (gNB) in a 5G system that employs a centralized and distributed architecture. When the access device 12 employs a centralized and distributed architecture, it typically includes a Centralized Unit (CU) and at least two Distributed Units (DUs). A protocol stack of a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer, a radio link layer control protocol (Radio Link Control, RLC) layer, and a medium access control (Media Access Control, MAC) layer is provided in the centralized unit; a Physical (PHY) layer protocol stack is provided in the distribution unit, and the specific implementation of the access device 12 is not limited by the embodiments of the present disclosure.

A wireless connection may be established between access device 12 and UE11 over a wireless air interface. In various embodiments, the wireless air interface is a fourth generation mobile communication network technology (4G) standard-based wireless air interface; or, the wireless air interface is a wireless air interface based on a fifth generation mobile communication network technology (5G) standard, for example, the wireless air interface is a new air interface; alternatively, the wireless air interface may be a wireless air interface based on a 5G-based technology standard of a next generation mobile communication network.

In some embodiments, an E2E (End to End) connection may also be established between UEs 11. Such as V2V (vehicle to vehicle, vehicle-to-vehicle) communications, V2I (vehicle to Infrastructure, vehicle-to-road side equipment) communications, and V2P (vehicle to pedestrian, vehicle-to-person) communications among internet of vehicles communications (vehicle to everything, V2X).

In some embodiments, the above wireless communication system may further comprise a network management device 13.

Several access devices 12 are connected to the network management device 13, respectively. The network management device 13 may be a core network device in a wireless communication system, for example, the network management device 13 may be a mobility management entity (Mobility Management Entity, MME) in an evolved packet core network (Evolved Packet Core, EPC). Alternatively, the network management device may be other core network devices, such as a Serving GateWay (SGW), a public data network GateWay (Public Data Network GateWay, PGW), a policy and charging rules function (Policy and Charging Rules Function, PCRF) or a home subscriber server (Home Subscriber Server, HSS), etc. The embodiment of the present disclosure is not limited to the implementation form of the network management device 13.

The UE accesses the network through a terrestrial cellular system, typically the radio cell broadcasts to the UE the TAC of a single tracking area TA with which the UE is registered with the network. Thereafter, in the course of conducting the service, the network may page the UE according to the TA. The UE accesses the network through a satellite system, and for reasons of satellite altitude, movement, etc., the satellite cell supports TACs broadcasting a single or multiple TAs to the UE for better paging of the UE.

As shown in fig. 2, the satellite broadcasts a tracking area code (Tracking Area Code, TAC) TAC for a single TA. Taking the UE in TA1 as an example, at time T1, the UE receives TAC1 broadcasted by satellite 1. At time T2, satellite 1 moves to the junction between TA1 and TA2, and if the coverage of TA2 by satellite 1 is greater than that of TA1, TAC2 is broadcast, and the UE receives TAC2 information broadcast by satellite 1. At time T3, satellite 1 has completely moved out of the TA1 coverage area, coverage is provided by satellite 2 moving into the coverage area, TAC1 is broadcast to the ground, and the UE receives the broadcast TAC1 information. Thus, when the broadcast TAC received by the UE at TA1 at a different time is TAC1, TAC2, TAC1, TAC2 ….

Fig. 2 satellite cell broadcasts a single TAC.

As shown in fig. 3, the satellite broadcasts a plurality of TACs. Taking the example that the UE is in TA1 and at time T1, the satellite 1 broadcasts TAC1, and the UE receives TAC1 information broadcast by the satellite 1. At time T2, the satellite 1 moves to the junction between the TA1 and the TA2, and at this time, the satellite 1 broadcasts the TAC1+TAC2, and the UE receives the information of the TAC1+TAC2 broadcast by the satellite 1. At time T3, satellite 1 has completely moved out of the TA1 coverage area, coverage is provided by satellite 2 moving into the coverage area, TAC1 is broadcast to the ground, and the UE receives the TAC1 information broadcast by satellite 2. Thus, when the broadcast TAC received by the UE at TA1 at a different time is TAC1, tac1+tac2, TAC1, tac1+tac2 ….

Fig. 2 satellite cell broadcasts a plurality of TACs.

The satellite communication system may use either of the broadcast modes described above, or a combination of both modes.

Fig. 4 shows a registration update procedure of a UE, which may include:

1) The UE sends a registration request message to AN access network or radio access network (AN/RAN) device. The message contains Access Network (AN) parameters, registration type, user hidden identification code (subscription concealed identifier, sui) or user temporary identification code (5Generation temporary UE identity,GUTI,5G-GUTI) or paging advance indication (Paging Early Indication, PEI) of the 5 th generation mobile communication, requested Network slice selection assistance information Network slice selection assistance information, nsai), last Access available tracking area identification (Tracking Area Identification, TAI), etc.

The registration type indicates whether the terminal is to perform an initial registration, a mobile registration update, a periodic registration update, or an emergency registration. To assist the AMF in determining the registration area for the UE, the TAI of the last access may be included.

2) The (R) AN selects AMF and requests NSSAI according to the (R) AT. If the (R) AN cannot select the appropriate AMF, the AN/RAN forwards the registration request message to the AMF configured in the (R) AN.

3) The (R) AN sends AN N2 message to the new AMF. The message contains N2 parameters, registration request, etc. The N2 parameter includes the selected PLMN ID, location information and a cell identity associated with the cell in which the UE is located.

4) If the in-service AMF changes since the last registration process, the new AMF may retrieve the stored SUPI and UE context for the UE from the old AMF.

5) If the terminal does not provide the SUCI or retrieves the SUCI from the old AMF, the new AMF initiates an identity request procedure to the terminal requesting the SUCI.

6) The new AMF may decide to initiate UE authentication by invoking AUSF. The AMF selects AUSF based on SUPI or sui.

7) If the AMF has changed since the last registration procedure, or if the SUPI provided by the UE does not reference a valid context in the AMF, the SUPI-based AMF selects one UDM and registers using that UDM. If the AMF does not have subscription data for the UE, the AMF retrieves access and mobility subscription data from the UDM, and so on.

8) The new AMF performs AM policy association (Policy Association) setup/modification for the policy control function PCF.

9) If a list of PDU sessions to be activated is included in the registration request of step 1, AMF will send NSmf_PDUSation_ UpdateSMContext request to the session management function SMF (Session Management Function) associated with the PDU sessions to activate the user plane connections for those PDU sessions.

10 The new AMF sends a registration accept (Registration Accept) message to the terminal indicating that the registration request has been accepted. The message content includes area information of the registration area, information of the movement restriction, allowable nsais, registration timer indication of the strict period, and the like. If the AMF allocates a new registration area, area information of the registration area needs to be transmitted to the terminal. If the registration acceptance message does not contain the area information of the registration area, the terminal considers the old registration area valid. If the terminal and registration type of the mobile restriction application are not emergency registrations, information of the mobile restriction is included.

11 Other steps of registering for updates.

In the initial registration process, the AMF acquires the current TA of the UE, and constructs a registration area (Registration Area, RA) according to the TA and other TAs (e.g., recently accessed TAs or neighboring TAs). And the AMF performs UE paging according to the RA. When the user moves and the current TA of the UE changes, the UE initiates registration update, and the RA contains the latest current TA of the UE.

In the case that the satellite-accessed wireless cell indicates support of broadcasting a plurality of TACs, after the prior art defines that the UE registers to the network, if at least one TA corresponding to the broadcasted TAC is contained in the RA, the UE does not need to execute a registration update process; when any one TA corresponding to the broadcasted TAC is not included in the RA, the UE needs to initiate a registration update to update the RA.

As shown in fig. 5, at time T1, the satellite cell covers TA1, TA2, TA5, broadcasts TAC1, TAC2 and TAC5, and if the UE is located at TA1, a network registration request is initiated, and in the registration request, the user location information (User Location Information, ULI) includes TAC1 and sends it to the AMF. The AMF creates an RA for the UE, containing TAC1. To avoid frequent registration updates caused by UE mobility, TACs of one or more TAs that are adjacent to TA1 may also be added to the RA. After registration is successful, the RA of the UE contains { TAC1, TAC2, TAC4, TAC5}.

At time T2, the satellite cell moves to the dashed circle area shown in fig. 5, where TAC2, TAC5, and TAC6 are broadcast. At the same time the UE moves from TA1 to TA6. At this point if the UE initiates a NAS request to the network, the ULI contains TAC6 and is sent to the AMF. When the AMF receives the request information, from the network perspective, since TAC6 is not included in UE RA { TAC1, TAC2, TAC4, TAC5}, the AMF needs to trigger the UE to initiate a registration update procedure to update that RA includes TAC6. When the UE receives the trigger message of the registration update, according to the prior art, because the broadcast information TAC2 received by the UE, TAC5 and TAC2 in TAC6, TAC5 is contained in the current UE RA, and the registration update does not need to be initiated. At this time, the network side needs to trigger the registration update, and abnormal conflict that the UE side does not need to initiate the registration update occurs, which may further cause abnormal flow processing.

As shown in fig. 6, an embodiment of the present disclosure provides a TA information processing method, which is performed by a UE, and includes:

s110: receiving broadcasted first TA information; wherein the first TA information indicates a first TA;

s120: selecting a second TA from the first TAs when at least one of the first TAs is contained within an RA of the UE, wherein the second TA is contained within the RA;

s130: and sending an NAS request message, wherein the NAS request message carries second TA information of a 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 robot walking on the ground, or an aircraft flying in low altitude, etc.

The UE may be an NTN UE, which may access an NTN cell.

After receiving the broadcasted first TA information in S110, it is determined whether each of the first TAs is contained in the RA one by one, and if one or more of the first TAs are found to be contained in the RA, one or more TAs are selected from the first TAs as second TAs, and the selected second TAs are contained in the RA.

In sending the NAS request message, after the network equipment of the core network receives the NAS request message, the network equipment discovers that the TA indicated by the TA information is contained in the RA of the UE, and then the UE registration update is not triggered, so that inconsistent judgment of whether the UE side and the network side need registration update is avoided, and the occurrence of abnormal flow is reduced.

In one embodiment, the method further comprises: when none of the TAs of the first TA are contained within the RA, selecting a third TA from the first TAs,

and sending a registration update request, wherein the registration update request message carries third TA information of a third TA.

If none of the TAs in the first TA is included in the RA of the UE, one or more TAs may be arbitrarily selected from the first TA as the third TA and sent to the network side through the registration update request, so the network side (for example, AMF) determines, according to the third TA information, that the third TA is not included in the RA of the UE, and receives the registration update request to update the RA of the UE, thereby completing the registration update procedure.

The third TA is: any TA that is contained by the first TA but not by the RA before the registration update.

The third TA may be one or more. For example, the third TA may be one TA, and is one TA randomly selected by the UE from the first TAs or a TA where the UE is currently located determined according to the location of the UE.

In some embodiments, the second TA is: any TA contained by the first TA and contained by the RA. And if part of the first TAs are contained in the RA of the UE, selecting any one or more TAs contained in the RA from the first TAs as the second TAs, and reporting second TA information of the second TAs to the network side.

The first TA information, the second TA information and the third TA information may be TAC or tracking area identity (Tracking Area Identification, TAI).

The second TA may be one or more, and illustratively, the second TA is one. Illustratively, the second TA may be: a TA belonging to the first TA and randomly selected among the UEs' RA.

In one embodiment, the NAS request message includes at least one of:

a service request message;

registering an update request message;

a protocol data unit PDU session establishment request message;

the PDU session establishment modification request message.

The service request message may be a request transmitted when the UE requests a related service, for example, a video service and/or a voice service, etc.

The registration update request message may be: the UE transmits when moving to a TA outside the RA.

The PDU session establishment request message is used for requesting the UE to establish a new PDU session to the network side.

The PDU session modification request message is used for requesting the UE to modify the current established PDU session from the network side.

When the UE sends the NAS request message to the network side, TA information is carried, so that the network device (for example, AMF) at the network side can determine whether the UE needs to be triggered to initiate registration update. The procedure of registration update may reuse the procedure of initial registration, see fig. 5 described above.

As shown in fig. 7, an embodiment of the present disclosure provides a registration update method, wherein the method is performed by a UE, and the method includes:

s210: receiving a registration update notification sent by network equipment;

s220: and directly sending a registration update request to the network equipment according to the registration update notification.

The UE may be an NTN UE, which may access an NTN cell.

Network devices herein include, but are not limited to, AMFs.

After receiving the registration update notification, the UE directly initiates registration update according to the registration update notification.

In this way, the UE directly initiates the registration update according to the registration update notification sent by the network device, and the process of judging whether the registration update needs to be initiated by the UE is omitted, so that the phenomenon that whether the registration update needs to be initiated by the UE side and the network side is inconsistent in judgment is avoided.

In some embodiments, the S220 may include:

and after receiving the registration update notification, sending a registration update request to the network equipment under the condition that the registration update is ignored and whether initiation is needed or not is judged.

After receiving the registration update notification, the UE directly sends a registration update request to the network device without determining whether the registration update needs to be initiated, i.e., without skipping the step of determining the registration update of the UE.

That is, in some embodiments, S220 may include: and under the condition that whether the registration update needs to be initiated is not judged, a registration update request is sent to the network equipment according to the registration update notification.

In some embodiments, the S220 may include:

and ignoring TA information broadcasted by a base station and/or RA information saved by the UE, and sending a registration update request to the network equipment according to the registration update notification.

In the embodiments of the present disclosure, the UE will ignore TA information broadcast by the base station and/or RA information locally stored by the UE, which indicates the RA of the UE. By ignoring the TA information broadcasted by the base station and/or the RA information stored by the UE, the UE cannot obtain a result of determining whether to perform registration update, so that a result of determining whether to perform registration update, which conflicts with a result of whether to perform registration update obtained by the network side, cannot be generated.

In some embodiments, 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 to the NAS request message. For example, the response message may be a rejection message of the NAS request message, where the rejection message may carry a cause value for the network device to reject the NAS request. And if the reason value indicates that registration update is needed and RA update is performed, the reason value is the registration update notification.

After the UE receives the registration update notification, the procedure of directly sending the registration update to the network device may reuse the initial registration procedure, which may be seen in fig. 5 described above.

The embodiment of the disclosure provides a TA information processing method, which can include:

when the network (such as AMF) informs the UE to initiate the registration update, the UE does not need to judge whether the registration update process needs to be initiated or not according to the registration update notification, i.e. the network requires the registration update to have a higher priority than the UE.

Taking fig. 3 as an example, assuming that the UE is located in TA1, initiating an initial registration request, the gNB sends the initial registration request to the AMF by including TAC1 in ULI, after the initial registration is successful, the AMF constructs and stores RA, where the RA includes TAC1, TAC2, TAC4, TAC5, and the AMF returns the RA to the UE for storage. TAC1 indicates TA1; TAC2 indicates TA2; TAC4 indicates TA4; TAC5 indicates TA5.

Thereafter, the UE moves to TA6, initiates a service request (service request) message, and the satellite cell also moves, broadcasts TAC2, TAC5 and TAC6 to the UE, and the UE and AMF processes in the UE initiating the service request process may be as shown in fig. 8:

processing of an initial registration procedure is completed between the ue and the core network, e.g.,

at the time of T1, the UE is positioned in TA1, and completes the initial access registration process through the satellite access network.

When processing a UE registration request message, the AMF determines that a registration area RA of the UE comprises TAC1, TAC2, TAC4 and TAC5. Information of RA of the UE is saved.

3. The RA information is sent to the UE, and specifically, the AMF includes the RA in a registration accept message and returns the RA to the UE. And the UE stores 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 time T2.

And 5, the gNB receives the service request message, determines the current TA of the UE, wherein the current TA is the TA where the UE is currently located, and for example, after the gNB receives the message, determines that the current TA=TA6 of the UE.

The gNB sends a service request message to the AMF, the service request message comprising: the current TA of the UE, i.e., TAC6 of TA6, specifically, for example, the gNB sends the AMF with a service request (service request) message together with TAC6 of TA6.

7. It is determined to perform the registration update, and illustratively, the AMF receives the NAS request message, determines that TAC6 is not included in RA, and needs to trigger the registration update. The NAS request message here includes the aforementioned service request message.

8. The remaining steps of the service request, illustratively, the AMF completes the remaining steps of the service request (service request) message corresponding flow.

9. The service reject group message carries a cause value, for example, the AMF returns a service reject (service reject) message to the UE, and the cause value is carried to indicate that the UE needs to register for updating. The message may be used as a message triggering the UE to initiate a registration update. Or the AMF returns a service reject message, step 10 is performed.

10. Triggering a UE registration update, e.g., the AMF initiates a message to the UE triggering the registration update.

11. And a registration update request, wherein the registration update request can carry information (TAC 6) of TA6, for example, after the UE receives the information of the network requiring registration update, the UE ignores the process of judging whether the registration update needs to be initiated or not, and directly initiates the registration update request. The gNB sends the information TAC6 of the TA corresponding to the current position of the UE to the AMF together with a registration update request (registration update request) message.

12. The RA of the UE is updated and saved, and the updated RA comprises TAC2, TAC4, TAC5 and TAC6.

13. The updated RA information is sent to the UE, and the AMF returns a registration update success message, and the updated RA is sent to the UE for saving, for example.

14. Reinitiating the service request message.

Another TA information processing method provided by the embodiment of the present disclosure includes:

the UE determines that if the received TAC of the broadcast changes, the UE preferentially selects the TAC of the TA contained in the RA when initiating the NAS procedure. The UE initiates the NAS procedure including the TAC in the NAS request message.

Also taking fig. 3 as an example, assuming that the UE is located in TA1, an initial registration request is initiated, and the UE selects TAC1 to send to the gNB.

The gNB sends the RA to the AMF in the ULI, after the initial registration is successful, the AMF constructs and stores RA, the RA comprises TAC1, TAC2, TAC4 and TAC5, and the AMF returns the RA to the UE for storage. Thereafter, the UE moves to TA6, initiates a service request (service request) message, and the satellite cell also moves, broadcasts TAC2, TAC5 and TAC6 to the UE, and the UE and AMF processes during the UE initiates the service request (service request) message are as shown in fig. 9:

The process of completing the initial registration procedure between the ue and the core network may specifically include:

AMF stores the RA information of UE, and when processing the UE registration request, AMF determines that the RA of the registration area of the UE comprises TAC1, TAC2, TAC4 and TAC5.

3. And sending the RA information of the UE to the UE, and enabling the AMF to contain the RA in a registration acceptance message and returning the RA information to the UE. And the UE stores the RA information.

4. Determining that the information of the broadcast TA changes, selecting a TA based on the RA, for example, selecting TAC5, and the UE initiates a service request (service request) message at time T2, before transmitting, determining that the received broadcast TAC changes from the previous one by the UE, and selecting a TAC contained in the RA, for example, TAC5, from the broadcast TAC message based on the RA acquired in step 2, and transmitting the TAC to the network.

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.

6. The step of remaining service requests, for example, after the AMF receives the service request message, determines that TAC5 is included in RA, and does not need to initiate registration update and process other steps of the service request message.

AMF returns a service accept message to UE.

In embodiment 6 of the present disclosure, before a UE sends a NAS procedure, firstly, according to RA, a TAC included in RA is selected from broadcast TACs and is included in NAS request message and sent to a network, so that the network can be prevented from triggering the UE to initiate a registration update operation. If the UE cannot select any TA contained by the RA from the current broadcast TAC according to the RA, optionally initiating a registration update procedure from the broadcast TAC by selecting one TAC.

As shown in fig. 10, an embodiment of the present disclosure provides a TA information processing apparatus, wherein the apparatus includes:

a receiving module 110 configured to receive broadcasted first TA information; wherein the first TA information indicates a first TA;

a selection module 120 configured to select a second TA from the first TAs when at least one of the first TAs is contained within a registration area, RA, of the UE, wherein the second TA is contained within the RA;

and a sending module 130 configured to send a non-access stratum NAS request message, where the NAS request message carries second TA information of a second TA.

The TA information processing apparatus may be included in the UE.

In one embodiment, the receiving module 110, selecting module 120 and sending module 130 may be program modules; the program modules, when executed by the processor, perform the functions of the various modules described previously.

In another embodiment, the receiving module 110, the selecting module 120 and the sending module 130 may be soft-hard combination modules; the soft and hard combined module comprises but is not limited to various programmable arrays; the programmable array includes, but is not limited to: a field programmable and/or complex programmable array.

In yet another embodiment, the receiving module 110, selecting module 120 and sending module 130 may be purely hardware modules; the pure hardware modules include, but are not limited to, application specific integrated circuits.

In one embodiment, the selection module 120 is further configured to select a third TA from the first TAs when none of the TAs are contained within the RA,

and a sending module 130 configured to send a registration update request, where the registration update request message carries third TA information of a third TA.

In one embodiment, the third TA is:

any TA that is contained by the first TA but not by the RA.

In one embodiment, the second TA is:

any TA contained by the first TA and contained by the RA.

As shown in fig. 11, an embodiment of the present disclosure provides a registration updating apparatus, where the apparatus includes:

A receiving module 210 configured to receive a registration update notification sent by a 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 apparatus may be included in the UE.

In one embodiment, the receiving module 210 and the sending module 220 may be program modules; the program modules, when executed by the processor, perform the functions of the various modules described previously.

In another embodiment, the receiving module 210 and the sending module 220 may be soft-hard combination modules; the soft and hard combined module comprises but is not limited to various programmable arrays; the programmable array includes, but is not limited to: field programmable and/or complex programmable arrays.

In yet another embodiment, the receiving module 210 and the sending module 220 may be pure hardware modules; the pure hardware modules include, but are not limited to, application specific integrated circuits.

In one embodiment, the sending module 220 is configured to send a registration update request to the network device without determining whether a 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 itself to determine whether the registration update needs to be initiated after receiving the registration update notification.

In one embodiment, the sending module 220 is configured to ignore the received TA information and/or the stored RA information broadcast by the base station, and send a registration update request to the network device according to the registration update notification.

The embodiment of the disclosure provides a communication device, comprising:

a memory for storing processor-executable instructions;

the processor is connected with the memories respectively;

wherein the processor is configured to execute the control method and/or the information processing method of the terminal provided by any of the foregoing technical solutions.

The processor may include various types of storage medium, which are non-transitory computer storage media, capable of continuing to memorize information stored thereon after a power down of the communication device.

Here, the communication apparatus includes: an access device or UE or core network device.

The processor may be coupled to the memory via a bus or the like for reading an executable program stored on the memory, for example, at least one of the methods shown in fig. 6-9.

Fig. 12 is a block diagram of a UE800, according to an example embodiment. For example, the UE800 may be a mobile phone, a computer, a digital broadcast user equipment, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 12, ue800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and a communication component 816.

The processing component 802 generally controls overall operation of the UE800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interactions between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the 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 the UE800, contact data, phonebook data, messages, pictures, videos, and the like. The memory 804 may be implemented by any type or combination of volatile or nonvolatile memory devices 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.

The power supply component 806 provides power to the various components of the UE 800. The power components 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the UE 800.

The multimedia component 808 includes a screen between the UE800 and the user that provides an output interface. In some embodiments, 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 sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and/or a rear camera. The front camera and/or the rear camera may receive external multimedia data when the UE800 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the UE800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 further includes a speaker for outputting audio signals.

The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor component 814 includes one or more sensors that provide status assessment of various aspects for the UE 800. For example, the sensor component 814 may detect an on/off state of the device 800, a relative positioning of components, such as a display and keypad of the UE800, the sensor component 814 may also detect a change in position of the UE800 or a component of the UE800, the presence or absence of user contact with the UE800, an orientation or acceleration/deceleration of the UE800, and a change in temperature of the UE 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to facilitate communication between the UE800 and other devices, either wired or wireless. The UE800 may access a wireless network based on a communication standard, such as WiFi,2G, or 3G, or a combination thereof. In one exemplary embodiment, the communication component 816 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the UE800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.

In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 804 including instructions executable by processor 820 of UE800 to perform the above-described method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

Embodiments of the present disclosure provide a computer storage medium storing an executable program; the executable program, when executed by the processor, can implement the TA information processing method provided in any of the foregoing technical solutions, for example, the method shown in fig. 6 to 9.

Such computer storage media 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, a U disk, or the like.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

A registration update method, wherein performed by a UE, the method comprising:

receiving a registration update notification sent by network equipment;

and directly sending a registration update request to the network equipment according to the registration update notification.
The method of claim 1, wherein the sending a registration update request to the network device directly from the registration update notification comprises:

and under the condition that whether the registration update needs to be initiated is not judged, a registration update request is sent to the network equipment according to the registration update notification.
The method according to claim 1 or 2, wherein the sending a registration update request to the network device directly from the registration update notification comprises:

and ignoring the TA information and/or the stored RA information broadcast by the received base station, and sending a registration update request to the network equipment according to the registration update notification.
A tracking area TA information processing method, wherein the method is performed by a user equipment UE, the method comprising:

receiving broadcasted first TA information; wherein the first TA information indicates a first TA;

selecting a second TA from the first TAs when at least one of the first TAs is contained within a registration area, RA, of the UE, wherein the second TA is contained within the RA;

And sending a non-access stratum (NAS) request message, wherein the NAS request message carries second TA information of a second TA.
The method of claim 4, wherein the method further comprises:

when none of the TAs of the first TA are contained within the RA, selecting a third TA from the first TAs,

and sending a registration update request, wherein the registration update request message carries third TA information of a third TA.
The method of claim 5, wherein the third TA is:

any TA that is contained by the first TA but not by the RA.
The method of claim 4 or 5, wherein the second TA is:

any TA contained by the first TA and contained by the RA.
A registration updating apparatus, wherein the apparatus comprises:

a receiving module configured to receive a registration update notification sent by a network device;

and a sending module 130 configured to send a registration update request to the network device directly according to the registration update notification.
The apparatus of claim 8, wherein the sending module 130 is configured to send a registration update request to the network device according to the registration update notification without determining whether a registration update needs to be initiated.
The apparatus according to claim 8 or 9, wherein the sending module 130 is configured to send a registration update request to the network device according to the registration update notification, ignoring the received TA information and/or the stored RA information broadcast by the base station.
A TA information processing apparatus, wherein the apparatus comprises:

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 TAs when at least one of the first TAs is contained within a registration area, RA, of the UE, wherein the second TA is contained within the RA;

and the sending module is configured to send a non-access stratum (NAS) request message, wherein the NAS request message carries second TA information of a second TA.
The apparatus of claim 11, wherein the selection module is further configured to select a third TA from the first TAs when none of the TAs are contained within the RA,

and the sending module is configured to send a registration update request, wherein the registration update request message carries third TA information of a third TA.
The apparatus of claim 11, wherein the third TA is:

Any TA that is contained by the first TA but not by the RA.
The apparatus of claim 11 or 12, wherein the second TA is:

any TA contained by the first TA and contained by the RA.
A communication device comprising 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 performs the method as provided in any one of claims 1 to 3 or 4 to 7 when the executable program is run by the processor.
A computer storage medium storing an executable program; the executable program, when executed by a processor, is capable of implementing the method as provided in any one of claims 1 to 3 or 4 to 7.