Ta information processing method and apparatus, communication device, and storage medium

Abstract

This disclosure provides a TA information processing method and apparatus, a communication device, and a storage medium. The TA information processing method may include: directly sending a registration update request to the network device based on the registration update notification.

Description

Technical Field

[0001] This disclosure relates to, but is not limited to, the field of wireless communication technology, and particularly to a tracking area (TA) information processing method and apparatus, communication equipment and storage medium. Background Technology

[0002] When a User Equipment (UE) initially connects to the network, it sends a registration request to the network, and the network responds to the registration request. During the registration process, the network creates and saves the UE's Registration Area (RA), which typically contains one or more Registration Areas (TAs).

[0003] Non-terrestrial networks (NTNs) can include NTN cells. Typical NTN cells include, but are not limited to, satellite cells.

[0004] NTN cells broadcast TA information, and may broadcast TA information for multiple TAs simultaneously.

[0005] In some cases, the network side determines that the UE needs to send a registration update to update the UE's RA. However, after receiving the registration update notification, the UE determines that the registration update does not need to be performed, which leads to a conflict between the network side and the UE in determining whether a registration update needs to be initiated, and further causes abnormal process processing. Summary of the Invention

[0006] This disclosure provides a TA information processing method and apparatus, a communication device and a storage medium.

[0007] A first aspect of this disclosure provides a TA information processing method, wherein the method is executed by a user equipment (UE), the method comprising:

[0008] Receive the first TA information broadcast; wherein the first TA information indicates the first TA;

[0009] When at least one of the first TAs is included in the RA of the UE, a second TA is selected from the first TAs, wherein the second TA is included in the RA;

[0010] Send a NAS request message, wherein the NAS request message carries the second TA information of the second TA.

[0011] A second aspect of this disclosure provides a registration update method, wherein the method is executed by a UE, the method comprising:

[0012] Receive registration update notifications sent by network devices;

[0013] The registration update request is sent directly to the network device based on the registration update notification.

[0014] A third aspect of this disclosure provides a TA information processing apparatus, executed by a user equipment (UE), the apparatus comprising:

[0015] The receiving module is configured to receive first TA information broadcast; wherein the first TA information indicates a first TA.

[0016] The selection module is configured to select a second TA from the first TAs when at least one of the first TAs is contained within the registration area RA of the UE, wherein the second TA is contained within the RA;

[0017] The sending module is configured to send a Non-Access Stratum (NAS) request message, wherein the NAS request message carries the second TA information of the second TA.

[0018] A third aspect of this disclosure provides a registration update apparatus, wherein the apparatus is executed by a UE, the apparatus comprising:

[0019] The receiving module is configured to receive registration update notifications sent by network devices;

[0020] The sending module is configured to directly send a registration update request to the network device based on the registration update notification.

[0021] A fifth aspect of this disclosure provides a communication device, including a processor, a transceiver, a memory, and an executable program stored in the memory and executable by the processor, wherein the processor executes the registration update method as provided in the first or second aspect above when running the executable program.

[0022] A sixth aspect of this disclosure provides a computer storage medium storing an executable program; the executable program, when executed by a processor, can implement the registration update method provided in the first or second aspect described above.

[0023] The technical solution provided in this disclosure embodiment allows the UE to receive first TA information broadcast by the base station and determine that at least one TA in the first TA information is included in the UE's RA. The UE then selects the second TA information included in the RA from the first TA and carries it in the NAS request message. In this way, after the AMF on the network side receives it, it will not trigger the UE registration update. This avoids the conflict between the UE and the network side in determining the registration update, thereby avoiding the occurrence of abnormal processes caused by the difference in determination between the network side and the UE.

[0024] In this embodiment of the present disclosure, after receiving the trigger update notification, the UE can directly initiate a registration update request based on the trigger update notification without making its own determination on whether a registration update is needed. In this way, the conflict between the UE and the network side in determining the registration update can be avoided, thereby avoiding the occurrence of abnormal processes caused by the different determinations of the network side and the UE.

[0025] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the embodiments of this disclosure. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments of the invention.

[0027] Figure 1 This is a schematic diagram illustrating the structure of a wireless communication system according to an exemplary embodiment;

[0028] Figure 2 This is a schematic diagram illustrating a TA handover in a wireless cell according to an exemplary embodiment;

[0029] Figure 3 This is a schematic diagram illustrating a different TA handover in a wireless cell according to an exemplary embodiment;

[0030] Figure 4 This is a schematic diagram illustrating a registration and update process for a TA according to an exemplary embodiment;

[0031] Figure 5 This is a schematic diagram illustrating a different TA handover in a wireless cell according to an exemplary embodiment;

[0032] Figure 6 This is a flowchart illustrating a TA information processing method according to an exemplary embodiment;

[0033] Figure 7 This is a flowchart illustrating a TA information processing method according to an exemplary embodiment;

[0034] Figure 8 This is a flowchart illustrating a TA information processing method according to an exemplary embodiment;

[0035] Figure 9 This is a flowchart illustrating a TA information processing method according to an exemplary embodiment;

[0036] Figure 10 This is a schematic diagram of the structure of a TA information processing device according to an exemplary embodiment;

[0037] Figure 11 This is a schematic diagram of the structure of a registration update device according to an exemplary embodiment;

[0038] Figure 12 This is a schematic diagram of the structure of a UE according to an exemplary embodiment. Detailed Implementation

[0039] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the embodiments of the present invention as detailed in the appended claims.

[0040] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0041] It should be understood that although the terms first, second, third, etc., may be used to describe various information in embodiments of this disclosure, such 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, first information may also be referred to as second information without departing from the scope of embodiments of this disclosure, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to a determination."

[0042] Please refer to Figure 1 This illustration shows a schematic diagram of the structure of a wireless communication system provided in an embodiment of this disclosure. Figure 1 As shown, the wireless communication system is a communication system based on cellular mobile communication technology. The wireless communication system may include: several UEs 11 and several access devices 12.

[0043] UE11 can 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 (RAN). UE11 can be an IoT UE, such as a sensor device, a mobile phone (or "cellular" phone), and a computer with an IoT UE. For example, it can be a fixed, portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted device. Examples include a station (STA), subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal, user agent, user device, or user equipment (UE). Alternatively, UE11 can be a device in an unmanned aerial vehicle (UAV). Alternatively, UE11 can be a vehicle-mounted device, such as a vehicle computer with wireless communication capabilities, or a wireless communication device connected to an external vehicle computer. Alternatively, UE11 can also be a roadside device, such as a street light, traffic light, or other roadside device with wireless communication capabilities.

[0044] Access device 12 can be a network-side device in a wireless communication system. This wireless communication system can be a 4G system (also known as Long Term Evolution, LTE); or it can be a 5G system (also known as a New Radio, NR, or 5G NR system). Alternatively, it can be the next generation after 5G. In this case, the access network in the 5G system can be called NG-RAN (New Generation-Radio Access Network). Alternatively, it can be an MTC system.

[0045] The access device 12 can be an evolved NB (eNB) used in a 4G system. Alternatively, the access device 12 can also be a gNB (gNB) using a centralized-distributed architecture in a 5G system. When the access device 12 adopts a centralized-distributed architecture, it typically includes a central unit (CU) and at least two distributed units (DUs). The central unit is equipped with a protocol stack of the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the Media Access Control (MAC) layer; the distributed units are equipped with a physical (PHY) layer protocol stack. This disclosure does not limit the specific implementation of the access device 12.

[0046] Access device 12 and UE11 can establish a wireless connection via a wireless air interface. In different implementations, 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 a new air interface; or, the wireless air interface can also be a wireless air interface based on a next-generation mobile communication network technology standard based on 5G.

[0047] In some embodiments, UE11 can also establish E2E (End to End) connections. Examples include V2V (vehicle to vehicle), V2I (vehicle to Infrastructure), and V2P (vehicle to pedestrian) communication scenarios in vehicle-to-everything (V2X) communication.

[0048] In some embodiments, the wireless communication system described above may further include a network management device 13.

[0049] Several access devices 12 are connected to network management device 13. Network management device 13 can be a core network device in a wireless communication system, such as a Mobility Management Entity (MME) in an Evolved Packet Core (EPC). Alternatively, it can be other core network devices, such as a Serving Gateway (SGW), a Public Data Network Gateway (PGW), a Policy and Charging Rules Function (PCRF), or a Home Subscriber Server (HSS). The implementation of network management device 13 is not limited in this embodiment.

[0050] When a UE accesses the network via a terrestrial cellular system, the radio cell typically broadcasts a Tracking Area Call (TAC) for a single Tracking Area (TA) to the UE, which then uses that TA to register with the network. Subsequently, during service operations, the network can page the UE based on the TA. When a UE accesses the network via a satellite system, due to factors such as satellite altitude and movement, satellite cells support broadcasting one or more TAs' TACs to the UE for better paging.

[0051] like Figure 2 As shown, satellites broadcast the Tracking Area Code (TAC) for a single Tracking Area (TA). Taking a UE in TA1 as an example, at time T1, the UE receives TAC1 broadcast by satellite 1. At time T2, satellite 1 moves to the boundary between TA1 and TA2. If satellite 1's coverage of TA2 is greater than its coverage of TA1, it broadcasts TAC2, and the UE receives the TAC2 information broadcast by satellite 1. At time T3, satellite 1 has completely moved out of the TA1 coverage area, and coverage is provided by satellite 2, which has moved into the coverage area. Satellite 2 broadcasts TAC1 to the ground, and the UE receives the broadcast TAC1 information. Therefore, a UE in TA1 receives broadcast TACs TAC1, TAC2, TAC1, TAC2… at different times.

[0052] Figure 2 Satellite cell broadcasts a single TAC.

[0053] like Figure 3As shown, the satellite broadcasts multiple TACs. Taking the UE as an example in TA1, 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 boundary between TA1 and TA2, at which point 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 TA1 coverage area, and coverage is provided by satellite 2, which has moved into the coverage area. Satellite 2 broadcasts TAC1 to the ground, and the UE receives the TAC1 information broadcast by satellite 2. Therefore, when a UE in TA1 receives broadcast TACs at different times, they are TAC1, TAC1+TAC2, TAC1, TAC1+TAC2, ...

[0054] Figure 3 The satellite cell broadcasts multiple TACs.

[0055] Satellite communication systems can use any of the above broadcast modes, or a combination of both.

[0056] Figure 4 The diagram illustrates a UE registration and update process, which may include:

[0057] 1) The UE sends a registration request message to the access network or radio access network (AN / RAN) equipment. The message includes access network (AN) parameters, registration type, subscription concealed identifier (SUCI) or 5G temporary UE identity (GUTI, 5G-GUTI) or paging early indication (PEI), requested network slice selection assistance information (NSSAI), and last access available tracking area identification (TAI), etc.

[0058] The registration type indicates whether the terminal is performing initial registration, mobile registration update, periodic registration update, or emergency registration. To help the AMF determine the registration area for the UE, the last visited TAI can be included.

[0059] 2)(R)AN selects an AMF based on (R)AT and requests NSSAI. If (R)AN cannot select an appropriate AMF, AN / RAN forwards the registration request message to the AMF configured in (R)AN.

[0060] 3)(R)AN sends an N2 message to the new AMF. This message contains N2 parameters, registration requests, etc. The N2 parameters include the selected PLMN ID, location information, and the cell identifier associated with the cell where the UE is located.

[0061] 4) If the AMF in the service has changed since the last registration process, the new AMF can retrieve the stored UE SUPI and UE context from the old AMF.

[0062] 5) If the terminal does not provide a SUCI, or if a SUCI is retrieved from the old AMF, the new AMF initiates an identity request procedure to the terminal to request a SUCI.

[0063] 6) The new AMF can decide to initiate UE authentication by calling AUSF. The AMF selects AUSF based on SUPI or SUCI.

[0064] 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 AMF based on the SUPI selects a UDM and registers using that UDM. If the AMF does not have the UE's subscription data, the AMF retrieves access and mobility subscription data, etc., from the UDM.

[0065] 8) The new AMF performs AM policy association establishment / modification on the policy control function PCF.

[0066] 9) If the registration request in step 1 contains a list of PDU sessions to be activated, the AMF will send an Nsmf_PDUSession_UpdateSMContext request to the Session Management Function (SMF) associated with the PDU sessions to activate the user plane connection of these PDU sessions.

[0067] 10) The new AMF sends a Registration Accept message to the terminal, indicating that the registration request has been accepted. The message includes region information for the registration area, mobility restriction information, allowed NSSAI, and a strict registration timer indication. If the AMF has assigned a new registration area, it needs to send the region information for that registration area to the terminal. If the Registration Accept message does not contain region information for the registration area, the terminal will consider the old registration area valid. If the terminal and registration type for the mobility restriction request are not emergency registration, then mobility restriction information will be included.

[0068] 11) Other steps for registration updates.

[0069] During the initial registration process, the AMF obtains the UE's current TA and constructs a Registration Area (RA) based on the TA and other TAs (such as recently visited TAs or neighboring TAs). The AMF then performs UE paging based on the RA. When the user moves and the UE's current TA changes, the UE initiates a registration update, updating the RA to include the latest UE current TA.

[0070] When a satellite-accessed radio cell indicates that it supports broadcasting multiple TACs, the existing technology defines that after a UE registers with the network, if at least one of the broadcast TACs' corresponding TAs is included in the RA, the UE does not need to perform a registration update process; when none of the broadcast TACs' corresponding TAs are included in the RA, the UE needs to initiate a registration update to update the RA.

[0071] like Figure 5 As shown, at time T1, the satellite cell covers TA1, TA2, and TA5, and broadcasts TAC1, TAC2, and TAC5. Assuming the UE is located at TA1 at this time, it initiates a network registration request. In the registration request, the User Location Information (ULI) includes TAC1 and is sent to the AMF. The AMF creates a Registered Area (RA) for the UE, which includes TAC1. To avoid frequent registration updates caused by UE movement, the TACs of one or more TAs adjacent to TA1 may also be added to the RA. After successful registration, the UE's RA contains {TAC1, TAC2, TAC4, TAC5}.

[0072] At time T2, the satellite cell moved to the position shown below. Figure 5 The area circled in the diagram shows the broadcast area where TAC2, TAC5, and TAC6 are being broadcast. Simultaneously, the UE moves from TA1 to TA6. If the UE initiates a NAS request to the network at this time, the ULI containing TAC6 is sent to the AMF. When the AMF receives this request information, from the network's perspective, since TAC6 is not included in the UE RA {TAC1, TAC2, TAC4, TAC5}, the AMF needs to trigger the UE to initiate a registration update process to update the RA to include TAC6. When the UE receives the registration update trigger message, according to existing technology, since TAC2 and TAC5 in the broadcast information TAC2, TAC5, and TAC6 received by the UE are all included in the current UE RA, and no registration update is required, an abnormal conflict occurs where the network side needs to trigger a registration update, while the UE side does not, potentially leading to abnormal process handling.

[0073] like Figure 6 As shown, this disclosure provides a TA information processing method, executed by a UE, the method comprising:

[0074] S110: Receive the first TA information broadcast; wherein, the first TA information indicates the first TA;

[0075] S120: When at least one of the first TAs is contained within the RA of the UE, a second TA is selected from the first TAs, wherein the second TA is contained within the RA;

[0076] S130: Send a NAS request message, wherein the NAS request message carries the second TA information of the second TA.

[0077] The UE in this embodiment can be any type of UE, such as a mobile phone, tablet computer, wearable device, vehicle-mounted device, ground-walking robot, or low-altitude flying aircraft.

[0078] This UE can be an NTN UE and can access an NTN cell.

[0079] After receiving the first TA information broadcast in S110, it will determine whether 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, one or more TAs will be selected from the first TA as the second TA, and the selected second TA is included in the RA.

[0080] In sending a NAS request message, when the core network device receives such a NAS request message, it will find that the TA indicated by the TA information is included in the UE's RA, and will determine not to trigger the UE registration update. In this way, the inconsistency between the UE side and the network side in determining whether registration update is needed will be avoided, and the occurrence of abnormal processes will be reduced.

[0081] In one embodiment, the method further includes: when none of the TAs in the first TA are included in the RA, selecting a third TA from the first TA.

[0082] Send a registration update request, wherein the registration update request message carries the third TA information of the third TA.

[0083] If none of the TAs in the first TA are included in the UE's RA, one or more TAs can be arbitrarily selected from the first TA as the third TA and sent to the network side through a registration update request. In this way, the network side (e.g., AMF) determines that the third TA is not included in the UE's RA based on the third TA information, accepts the registration update request, updates the UE's RA, and thus completes the registration update process.

[0084] The third TA is any TA that is included in the first TA but not in the RA before the registration update.

[0085] The third TA can be one or more. For example, the third TA can be one, which is either a TA randomly selected by the UE from the first TA or the TA where the UE is currently located, determined based on the UE's position.

[0086] In some embodiments, the second TA is any TA that is included in the first TA and is included in the RA. If some TAs in the first TA are included in the RA of the UE, any one or more TAs in the first TA that are included in the RA are selected as the second TA, and the second TA information of the second TA is reported to the network side.

[0087] The first TA information, the second TA information, and the third TA information can all be TAC or Tracking Area Identification (TAI).

[0088] The second TA can be one or more; for example, the second TA is one. For example, the second TA can be a TA that belongs to the first TA and is randomly selected from within the RA of the UE.

[0089] In one embodiment, the NAS request message includes at least one of the following:

[0090] Service request message;

[0091] Registration update request message;

[0092] Protocol Data Unit (PDU) Session Establishment Request Message;

[0093] PDU Session Establishment Modification Request Message.

[0094] Service request messages are requests sent by a UE when requesting related services, such as video services and / or voice services.

[0095] The registration update request message may be sent by the UE when it moves to a TA outside the RA.

[0096] The PDU session establishment request message is used by the UE to request the network side to establish a new PDU session.

[0097] The PDU session modification request message is used by the UE to request the network side to modify the currently established PDU session.

[0098] When the UE sends a NAS request message to the network side, it carries TA information, which allows the network equipment (e.g., AMF) on the network side to determine whether the UE needs to initiate a registration update. The registration update process can reuse the initial registration process, as described above. Figure 5 As shown.

[0099] like Figure 7 As shown in the embodiments of this disclosure, a registration update method is provided, wherein the method is executed by the UE, and the method includes:

[0100] S210: Receive registration update notifications sent by network devices;

[0101] S220: Directly send a registration update request to the network device based on the registration update notification.

[0102] The UE in this embodiment can be any type of UE, such as a mobile phone, tablet computer, wearable device, vehicle-mounted device, ground-walking robot, or low-altitude flying aircraft.

[0103] This UE can be an NTN UE and can access an NTN cell.

[0104] The network devices mentioned here include, but are not limited to, AMF.

[0105] Upon receiving the registration update notification, the UE directly initiates a registration update based on the notification.

[0106] In this way, the UE directly initiates registration update based on the registration update notification sent by the network device, ignoring the UE's own process of determining whether a registration update needs to be initiated, thereby avoiding the phenomenon of inconsistency between the UE side and the network side regarding whether a registration update needs to be initiated.

[0107] In some embodiments, S220 may include:

[0108] Upon receiving the registration update notification, without considering whether the registration update needs to be initiated, a registration update request is sent to the network device.

[0109] After receiving the registration update notification, the UE will not determine whether it needs to initiate a registration update; that is, it will skip the UE's registration update determination step and directly send a registration update request to the network device.

[0110] In some embodiments, S220 may include: sending a registration update request to the network device based on the registration update notification without determining whether a registration update needs to be initiated.

[0111] In some embodiments, S220 may include:

[0112] Ignoring the TA information broadcast by the base station and / or the RA information stored by the UE, a registration update request is sent to the network device according to the registration update notification.

[0113] In this embodiment, the UE ignores the TA information broadcast by the base station and / or the RA information stored locally by the UE, where the RA information indicates the UE's RA. By ignoring the TA information broadcast by the base station and / or the RA information stored locally, the UE cannot obtain a determination result on whether a registration update is needed. Therefore, it will not generate a determination result that conflicts with the result on whether a registration update is needed obtained from the network side. In this case, the UE is equivalent to directly sending a registration update request to the network device based on the registration update notification sent by the network side.

[0114] In some embodiments, the registration update notification may be sent to the UE as a separate NAS message, or it 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, which may carry a reason value for the network device rejecting the NAS request. If the reason value indicates that a registration update is required and a RA update is needed, then the reason value is the registration update notification.

[0115] After receiving the registration update notification, the UE can directly send the registration update to the network device. This process can reuse the initial registration process, as described above. Figure 5 As shown.

[0116] This disclosure provides a TA information processing method that may include:

[0117] When the network (e.g., AMF) notifies the UE to initiate a registration update, the UE, based on the registration update notification, no longer needs to determine whether it needs to initiate a registration update process; that is, the network requires that the registration update has a higher priority than the UE.

[0118] by Figure 3 For example, assuming the UE is located at TA1 and initiates an initial registration request, the gNB sends TAC1 to the AMF in the ULI. After successful initial registration, the AMF constructs and saves the RA, which contains TAC1, TAC2, TAC4, and TAC5. The AMF then returns the RA to the UE for storage. TAC1 indicates TA1; TAC2 indicates TA2; TAC4 indicates TA4; and TAC5 indicates TA5.

[0119] Subsequently, the UE moves to TA6 and initiates a service request message. The satellite cell also moves, broadcasting TAC2, TAC5, and TAC6 to the UE. The UE and AMF processing during the service request process can be as follows: Figure 8 As shown:

[0120] 1. The initial registration process between the UE and the core network. For example, at time T1, the UE is located at TA1 and accesses the network via satellite to complete the initial access registration process.

[0121] 2. When processing the UE registration request message, the AMF determines that the UE's registration area RA contains TAC1, TAC2, TAC4, and TAC5. The AMF then stores the UE's RA information.

[0122] 3. The RA information is sent to the UE. Specifically, the AMF includes the RA in the registration acceptance message and returns it to the UE. The UE saves the RA information.

[0123] 4. The UE sends a NAS request message to the network side. For example, the UE initiates a service request message at time T2.

[0124] 5. When the gNB receives the service request message, it determines the UE's current TA. The current TA is the TA that the UE is currently in. For example, after receiving the message, the gNB determines that the UE's current TA is TA6.

[0125] 6. The gNB sends a service request message to the AMF. This service request message includes the UE's current TA, i.e., TAC6 of TA6. Specifically, the gNB sends TAC6 of TA6 together with the service request message to the AMF.

[0126] 7. Determine to perform registration update. For example, the AMF receives a NAS request message, determines that TAC6 is not included in the RA, and needs to trigger a registration update. The NAS request message here includes the aforementioned service request message.

[0127] 8. The remaining steps of the service request: For example, the AMF completes the remaining steps of the process corresponding to the service request message.

[0128] 9. Service Reject group message, carrying a reason value. For example, the AMF returns a service reject message to the UE, carrying a reason value, indicating that the UE needs to register for an update. This message can be used to trigger the UE to initiate a registration update. Alternatively, the AMF returns a service reject message, proceeding to step 10.

[0129] 10. Trigger UE registration update, for example, the AMF sends a message to the UE to trigger registration update.

[0130] 11. Registration Update Request: This registration update request may carry TA6 information (TAC6). For example, after receiving a registration update request from the network, the UE may skip the UE's decision-making process and directly initiate the registration update request. The gNB sends the TA6 information corresponding to the UE's current location along with the registration update request message to the AMF.

[0131] 12. Update and save the RA of the UE. The updated RA includes TAC2, TAC4, TAC5, and TAC6.

[0132] 13. Send the updated RA information to the UE. For example, the AMF returns a registration update success message and sends the updated RA to the UE for storage.

[0133] 14. Re-initiate the service request message.

[0134] Another TA information processing method provided in this disclosure includes:

[0135] If the received broadcast TAC changes, the UE will preferentially select the TAC of the TA included in the RA when initiating the NAS procedure. The UE includes the TAC in the NAS request message to initiate the NAS procedure.

[0136] Or with Figure 3 For example, assuming the UE is located in TA1, it initiates an initial registration request, which is sent to the gNB by the UE selecting TAC1.

[0137] The gNB includes this in the ULI and sends it to the AMF. After successful initial registration, the AMF constructs and saves the RA, which includes TAC1, TAC2, TAC4, and TAC5. The AMF then returns the RA to the UE for storage. Subsequently, the UE moves to TA6 and initiates a service request message. The satellite cell also moves, broadcasting TAC2, TAC5, and TAC6 to the UE. The UE and AMF processing during the service request message initiation process is as follows: Figure 9 As shown:

[0138] 1. The initial registration process between the UE and the core network, which may include:

[0139] At time T1, the UE is located at TA1 and completes the initial access registration process by accessing the network via satellite.

[0140] 2. The AMF stores the UE's RA information. When processing a UE registration request, the AMF determines that the UE's registration area RA includes TAC1, TAC2, TAC4, and TAC5.

[0141] 3. The RA information of the UE is sent to the UE. The AMF includes the RA in the registration acceptance message and returns it to the UE. The UE saves the RA information.

[0142] 4. Determine if the broadcast TAC information has changed, and select a TAC based on the RA, for example, select TAC5. When the UE initiates a service request message at time T2, before sending it, the UE determines that the received broadcast TAC has changed from before. Based on the RA obtained in step 2, the UE selects a TAC contained in the broadcast TAC message, such as TAC5, and sends it to the network.

[0143] 5. The UE sends a service request message to the AMF via the gNB, carrying TAC5. For example, the UE sends a service request message containing TAC5.

[0144] 6. The remaining service request steps, for example, after AMF receives the above service request message, it determines that TAC5 is included in RA, does not need to initiate registration update, and processes the other steps of the service request message.

[0145] 7. The AMF returns a service accept message to the UE.

[0146] In Embodiment 6 of this disclosure, before sending the NAS procedure, the UE first selects a TAC contained in the RA from the broadcast TACs according to the RA and includes it in the NAS request message and sends it to the network. This can avoid the network triggering the UE to initiate a registration update operation.

[0147] If, according to the RA, the UE cannot select any TA included in the RA from the current broadcast TAC, then it may arbitrarily select any TAC from the broadcast TAC to initiate the registration update process.

[0148] like Figure 10 As shown, this disclosure provides a TA information processing apparatus, wherein the apparatus includes:

[0149] The receiving module 110 is configured to receive first TA information broadcast; wherein the first TA information indicates a first TA.

[0150] Selection module 120 is configured to select a second TA from the first TAs when at least one of the first TAs is contained within the registration area RA of the UE, wherein the second TA is contained within the RA;

[0151] The sending module 130 is configured to send a non-access stratum (NAS) request message, wherein the NAS request message carries the second TA information of the second TA.

[0152] The TA information processing device can be included within the UE.

[0153] In one embodiment, the receiving module 110, the selection module 120, and the sending module 130 may be program modules; after being executed by the processor, the program modules can realize the functions of the aforementioned modules.

[0154] In another embodiment, the receiving module 110, the selection module 120, and the transmitting module 130 may be a hardware-software hybrid module; the hardware-software hybrid module includes, but is not limited to, various programmable arrays; the programmable arrays include, but are not limited to, field-programmable and / or complex programmable arrays.

[0155] In another embodiment, the receiving module 110, the selection module 120, and the transmitting module 130 may be pure hardware modules; the pure hardware modules include, but are not limited to, application-specific integrated circuits.

[0156] In one embodiment, 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 are included in the RA.

[0157] The sending module 130 is configured to send a registration update request, wherein the registration update request message carries the third TA information of the third TA.

[0158] In one embodiment, the third TA is:

[0159] Any TA that is included in the first TA but not in the RA.

[0160] In one embodiment, the second TA is:

[0161] Any TA that is included in the first TA and is included in the RA.

[0162] like Figure 11 As shown in the figure, this disclosure provides a registration update device, wherein the device includes:

[0163] The receiving module 210 is configured to receive registration update notifications sent by network devices;

[0164] The sending module 220 is configured to directly send a registration update request to the network device based on the registration update notification.

[0165] The TA information processing device can be included within the UE.

[0166] In one embodiment, the receiving module 210 and the sending module 220 may be program modules; after being executed by the processor, the program modules can realize the functions of the aforementioned modules.

[0167] In another embodiment, the receiving module 210 and the transmitting module 220 may be hardware-software hybrid modules; the hardware-software hybrid modules include, but are not limited to, various programmable arrays; the programmable arrays include, but are not limited to, field-programmable and / or complex programmable arrays.

[0168] In another embodiment, the receiving module 210 and the transmitting module 220 may be pure hardware modules; the pure hardware modules include, but are not limited to, application-specific integrated circuits.

[0169] 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 after receiving a registration update notification, without the UE itself determining whether a registration update needs to be initiated.

[0170] In one embodiment, the sending module 220 is configured to ignore the received TA information broadcast by the base station and / or the stored RA information, and send a registration update request to the network device according to the registration update notification.

[0171] This disclosure provides a communication device, including:

[0172] Memory used to store processor-executable instructions;

[0173] The processor is connected to the memory separately;

[0174] The processor is configured to execute the control method and / or information processing method of the terminal provided by any of the aforementioned technical solutions.

[0175] The processor may include various types of storage media, which are non-transitory computer storage media that can continue to store information after the communication device loses power.

[0176] Here, the communication equipment includes: access equipment or UE or core network equipment.

[0177] The processor can be connected to the memory via a bus or similar means to read executable programs stored in the memory, for example, such as... Figures 6 to 9 At least one of the methods shown.

[0178] Figure 12This is a block diagram illustrating a UE 800 according to an exemplary embodiment. For example, the UE 800 may be a mobile phone, computer, digital broadcast user equipment, messaging transceiver, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0179] Reference Figure 12 UE800 may include one or more of the following components: processing component 802, memory 804, power supply component 806, multimedia component 808, audio component 810, input / output (I / O) interface 812, sensor component 814, and communication component 816.

[0180] Processing component 802 typically controls the overall operation of UE 800, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the methods described above. Furthermore, processing component 802 may include one or more modules to facilitate interaction between processing component 802 and other components. For example, processing component 802 may include a multimedia module to facilitate interaction between multimedia component 808 and processing component 802.

[0181] Memory 804 is configured to store various types of data to support operation on UE 800. Examples of this data include instructions for any application or method operating on UE 800, contact data, phonebook data, messages, pictures, videos, etc. Memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, 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 storage, flash memory, magnetic disk, or optical disk.

[0182] Power supply component 806 provides power to various components of UE800. Power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to UE800.

[0183] The multimedia component 808 includes a screen that provides an output interface between the UE 800 and the user. 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 touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, the multimedia component 808 includes a front-facing camera and / or a rear-facing camera. When the UE 800 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0184] Audio component 810 is configured to output and / or input audio signals. For example, audio component 810 includes a microphone (MIC) configured to receive external audio signals when UE 800 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 804 or transmitted via communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

[0185] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0186] Sensor assembly 814 includes one or more sensors for providing status assessments of various aspects of UE 800. For example, sensor assembly 814 can detect the on / off state of UE 800, the relative positioning of components such as the display and keypad of UE 800, changes in the position of UE 800 or one of its components, the presence or absence of user contact with UE 800, the orientation or acceleration / deceleration of UE 800, and temperature changes of UE 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. 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, sensor assembly 814 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0187] Communication component 816 is configured to facilitate wired or wireless communication between UE 800 and other devices. UE 800 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 816 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 816 also includes a near-field communication (NFC) module to facilitate short-range communication. 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.

[0188] In an exemplary embodiment, 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 components to perform the methods described above.

[0189] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, which can be executed by the processor 820 of the UE 800 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0190] This disclosure provides a computer storage medium storing an executable program; after being executed by a processor, the executable program can implement the TA information processing method provided by any of the aforementioned technical solutions, for example, such as... Figures 6 to 9 The method shown.

[0191] The computer storage media includes, but is not limited to, various non-transient storage media. These non-transient storage media include, but are not limited to, hard drives, flash drives, or USB flash drives.

[0192] Other embodiments of the invention will readily occur to those skilled in the art upon 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 that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0193] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A registration update method, wherein, Performed by the UE, the method includes: Receive registration update notifications sent by network devices; The registration update request is sent directly to the network device based on the registration update notification. The step of directly sending a registration update request to the network device based on the registration update notification includes: 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.

2. The method according to claim 1, wherein, The step of directly sending a registration update request to the network device based on the registration update notification includes: Without determining whether a registration update needs to be initiated, a registration update request is sent to the network device based on the registration update notification.

3. A registration and update device, wherein, The device includes: The receiving module is configured to receive registration update notifications sent by network devices; The sending module is configured to directly send a registration update request to the network device based on the registration update notification; the step of directly sending the registration update request to the network device based on the registration update notification includes: ignoring the received TA information broadcast by the base station and / or the stored RA information, and sending the registration update request to the network device based on the registration update notification.

4. The apparatus according to claim 3, wherein, The sending module is configured to send a registration update request to the network device based on the registration update notification without determining whether a registration update needs to be initiated.

5. A communication device, comprising a processor, a transceiver, a memory, and an executable program stored in the memory and capable of being executed by the processor, wherein, When the processor runs the executable program, it performs the method provided as claimed in any one of claims 1 to 2.

6. A computer storage medium storing an executable program; the executable program, when executed by a processor, is capable of implementing the method provided in any one of claims 1 to 2.

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