Registration method and apparatus

Abstract

Embodiments of the present application relate to technical fields such as communications and terminal registration, and provide a registration method and apparatus. The method comprises: sending a non-access stratum (NAS) message to a first network device, wherein a terminal is awaiting registration to a terrestrial network; and receiving first link release information sent by the first network device, the first link release information being used for instructing the terminal to suspend a registration process. The present application is used for preventing interruption of the registration process of the terminal.

Description

Registration method and device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on December 26, 2023, with application number 202311819635.X and application name “Registration Method and Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The embodiments of the present application relate to technical fields such as communications and terminal registration, and in particular to a registration method and apparatus. Background Art

[0003] Currently, satellites can use a store-and-forward mode to forward signaling and data between terminals and ground networks.

[0004] In the terminal registration process, in the store-and-forward mode, when there is a link between the terminal's current service satellite and the ground network, the registration process can be completed through the current service satellite. When there is no link between the terminal's current service satellite and the ground network, the terminal's registration process is interrupted. Summary of the Invention

[0005] The embodiments of the present application provide a registration method and apparatus for preventing the registration process of a terminal from being interrupted.

[0006] In a first aspect, an embodiment of the present application provides a registration method for a terminal, the method comprising:

[0007] Sending a non-access stratum (NAS) message to the first network device, wherein the terminal is to be registered with the terrestrial network;

[0008] Receive first link release information sent by the first network device, where the first link release information is used to instruct the terminal to suspend a registration process.

[0009] In a possible implementation, the first link release information includes a timing duration of a first timer and / or a timing duration of a second timer.

[0010] In a possible implementation, the method further includes:

[0011] The first timer and / or the second timer is started.

[0012] In a possible implementation, the method further includes:

[0013] When the first timer times out and the second timer is running, a request message is sent to the second network device, where the request message is used to obtain a NAS response message corresponding to the NAS message.

[0014] In a possible implementation, the method further includes:

[0015] Receive the NAS response message sent by the second network device, and stop the second timer.

[0016] In a possible implementation, the receiving the NAS response message sent by the second network device includes:

[0017] In a case where the NAS response message is stored in the second network device, the NAS response message sent by the second network device is received.

[0018] In a possible implementation, the method further includes:

[0019] Receive second link release information sent by the second network device, where the second link release information is used to instruct the terminal to suspend a registration process.

[0020] In a possible implementation, the receiving the second link release information sent by the second network device includes:

[0021] In a case where the second network device does not store the NAS response message, second link release information sent by the second network device is received.

[0022] In a possible implementation, the second link release information includes a new timing duration of the first timer and / or first indication information;

[0023] The first indication information is used to indicate that the NAS response message is not stored.

[0024] In a possible implementation, the method further includes:

[0025] Start or restart the first timer.

[0026] In a possible implementation, when the second timer times out, it is determined that the registration process has failed.

[0027] In a possible implementation manner, the request message includes the permanent identity of the terminal and / or the second indication information;

[0028] The second indication information is used to instruct to obtain the NAS response message.

[0029] In a second aspect, an embodiment of the present application provides a registration method for a first network device, the method comprising:

[0030] receiving a NAS message sent by the terminal;

[0031] Sending first link release information to the terminal, where the first link release information is used to instruct the terminal to suspend a registration process.

[0032] In a possible implementation, the first link release information includes a timing duration of a first timer and / or a timing duration of a second timer.

[0033] In a third aspect, an embodiment of the present application provides a registration method, using a second network device, the method comprising:

[0034] Receive a request message sent by the terminal, where the request message is used to obtain a NAS response message corresponding to the NAS message.

[0035] In a possible implementation, the method further includes:

[0036] In a case where the NAS response message is stored in the second network device, the NAS response message is sent to the terminal.

[0037] In a possible implementation, the method further includes:

[0038] In a case where the NAS response message is not stored in the second network device, second link release information is sent to the terminal, where the second link release information is used to instruct the terminal to suspend the registration process.

[0039] In a possible implementation, the second link release information includes a new timing duration of the first timer and / or first indication information;

[0040] The first indication information is used to indicate that the NAS response message is not stored.

[0041] In a possible implementation manner, the request message includes the permanent identity of the terminal and / or the second indication information;

[0042] The second indication information is used to instruct to obtain the NAS response message.

[0043] In a fourth aspect, an embodiment of the present application provides a registration device, applied to a terminal, the device comprising:

[0044] A first sending module is configured to send a non-access stratum (NAS) message to a first network device, wherein the terminal is to be registered with the terrestrial network;

[0045] The first receiving module is configured to receive first link release information sent by the first network device, where the first link release information is used to instruct the terminal to suspend a registration process.

[0046] In a possible implementation, the first link release information includes the timing duration of the first timer and / or the timing duration of the second timer.

[0047] In a possible implementation, the apparatus further includes:

[0048] The control module is configured to start the first timer and / or the second timer.

[0049] In a possible implementation, the first sending module is further used to: when the first timer times out and the second timer is running, send a request message to the second network device, where the request message is used to obtain a NAS response message corresponding to the NAS message.

[0050] In a possible implementation, the first receiving module is further configured to receive the NAS response message sent by the second network device;

[0051] The control module is further configured to stop the second timer.

[0052] In a possible implementation manner, the first receiving module is further specifically configured to: when the NAS response message is stored in the second network device, receive the NAS response message sent by the second network device.

[0053] In a possible implementation, the first receiving module is further configured to: receive second link release information sent by the second network device, where the second link release information is used to instruct the terminal to suspend a registration process.

[0054] In a possible implementation, the first receiving module is further configured to: receive second link release information sent by the second network device when the second network device does not store the NAS response message.

[0055] In a possible implementation, the second link release information includes a new timing duration of the first timer and / or first indication information;

[0056] The first indication information is used to indicate that the NAS response message is not stored.

[0057] In a possible implementation, the control module is further configured to: start or restart the first timer.

[0058] In a possible implementation, when the second timer times out, it is determined that the registration process has failed.

[0059] In a possible implementation manner, the request message includes the permanent identity of the terminal and / or the second indication information;

[0060] The second indication information is used to instruct to obtain the NAS response message.

[0061] In a fifth aspect, an embodiment of the present application provides a registration device, applied to a first network device, the device comprising:

[0062] A second receiving module, configured to receive a NAS message sent by the terminal;

[0063] The second sending module is configured to send first link release information to the terminal to instruct the terminal to suspend a registration process.

[0064] In a possible implementation, the first link release information includes a timing duration of a first timer and / or a timing duration of a second timer.

[0065] In a sixth aspect, an embodiment of the present application provides a registration device, applied to a second network device, the device comprising:

[0066] The third receiving module is configured to receive a request message sent by the terminal, where the request message is used to obtain a NAS response message corresponding to the NAS message.

[0067] In a possible implementation, the apparatus further includes:

[0068] The third sending module is configured to send the NAS response message to the terminal when the NAS response message is stored in the second network device.

[0069] In a possible implementation, the apparatus further includes:

[0070] The third sending module is configured to send second link release information to the terminal when the NAS response message is not stored in the second network device, where the second link release information is used to instruct the terminal to suspend the registration process.

[0071] In a possible implementation, the second link release information includes a new timing duration of the first timer and / or first indication information;

[0072] The first indication information is used to indicate that the NAS response message is not stored.

[0073] In a possible implementation manner, the request message includes the permanent identity of the terminal and / or the second indication information;

[0074] The second indication information is used to instruct to obtain the NAS response message.

[0075] In a seventh aspect, an embodiment of the present application provides a registration device, including: a memory and a processor;

[0076] Memory stores computer-executable instructions;

[0077] The processor executes the computer-executable instructions stored in the memory, so that the processor performs any one of the methods of the first aspect.

[0078] In an eighth aspect, an embodiment of the present application provides a registration device, including: a memory and a processor;

[0079] Memory stores computer-executable instructions;

[0080] The processor executes the computer-executable instructions stored in the memory, so that the processor performs the method of the second aspect.

[0081] In a ninth aspect, an embodiment of the present application provides a registration device, including: a memory and a processor;

[0082] Memory stores computer-executable instructions;

[0083] The processor executes the computer-executable instructions stored in the memory, so that the processor performs any method in the third aspect.

[0084] In the tenth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores computer-executable instructions. When the computer-executable instructions are executed by a processor, they are used to implement any one of the methods in the first aspect, or any one of the second aspect, or any one of the third aspect.

[0085] In the eleventh aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, implements the method of any one of the first aspect, or any one of the second aspect, or any one of the third aspects.

[0086] In the twelfth aspect, an embodiment of the present application provides a chip having a computer program stored thereon. When the computer program is executed by the chip, the method of any one of the first aspect, or any one of the second aspect, or any one of the third aspect is implemented.

[0087] In the thirteenth aspect, an embodiment of the present application provides a chip module on which a computer program is stored. When the computer program is executed by the chip module, it implements a method as described in any one of the first aspect, any one of the second aspect, or any one of the third aspect.

[0088] An embodiment of the present application provides a registration method and apparatus, comprising: sending a non-access stratum (NAS) message to a first network device, indicating that a terminal is to be registered with the terrestrial network; and receiving a first link release message sent by the first network device, the first link release message instructing the terminal to suspend the registration process. Using the above method, even when the first network device is disconnected from the terrestrial network, the terminal can receive the first link release message sent by the first network device and suspend the registration process, thereby preventing the terminal's registration process from being interrupted. BRIEF DESCRIPTION OF THE DRAWINGS

[0089] In order to more clearly illustrate the technical solutions in this application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0090] FIG1 is a schematic diagram of a satellite communication architecture according to an embodiment of the present application;

[0091] FIG2 is a second schematic diagram of the satellite communication architecture provided by an embodiment of the present application;

[0092] FIG3 is a flowchart of a registration method according to an embodiment of the present application;

[0093] FIG4 is a second flow chart of the registration method provided in an embodiment of the present application;

[0094] FIG5 is a third flow chart of the registration method provided in an embodiment of the present application;

[0095] FIG6 is a schematic diagram of a structure of a registration device according to an embodiment of the present application;

[0096] FIG7 is a second structural diagram of a registration device provided in an embodiment of the present application;

[0097] FIG8 is a third structural diagram of the registration device provided in an embodiment of the present application;

[0098] FIG9 is a fourth structural diagram of a registration device provided in an embodiment of the present application;

[0099] FIG10 is a fifth structural diagram of a registration device provided in an embodiment of the present application;

[0100] FIG11 is a sixth structural diagram of the registration device provided in an embodiment of the present application.

[0101] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0102] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0103] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0104] First, satellite communication will be described with reference to FIG1 .

[0105] Figure 1 is a schematic diagram of a satellite communication architecture provided by an embodiment of the present application. As shown in Figure 1 , it includes: a terminal, a satellite, and a ground network.

[0106] The base station is located on the satellite. The ground network includes the ground network management and the core network. The core network includes network elements such as the access and mobility management function and the user plane function.

[0107] The link between the terminal and the satellite is called the service link, and the link between the satellite and the terrestrial network is called the feeder link.

[0108] In the early stages of satellite network deployment, the number of satellites and ground networks may be small, which may result in the satellite being unable to connect to the ground network when the satellite is connected to the terminal; or, when the satellite is connected to the ground network, the satellite is unable to connect to the terminal, resulting in intermittent links between the terminal and the ground network and intermittent data transmission between the terminal and the ground network.

[0109] Figure 2 is a second schematic diagram of the satellite communication architecture provided by an embodiment of the present application. As shown in Figure 2, it includes: a terminal, a satellite, and a ground network.

[0110] For example, at time T1, the satellite is connected to the terminal, but not to the terrestrial network. For example, at time T2, the satellite is connected to the terrestrial network, but not to the terminal. When there is no connection between the terminal's current serving satellite and the terrestrial network, the terminal's registration process is interrupted.

[0111] In order to prevent the terminal's registration process from being interrupted when there is no link between the terminal's current serving satellite and the ground network, the present application provides a registration method and apparatus. In this method, after the terminal sends a non-access stratum (NAS) message to the current serving satellite, if there is no NAS response message in the current serving satellite, the current serving satellite sends a first link release message to the terminal to prevent the terminal's registration process from being interrupted.

[0112] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0113] The technical solution of the present application can be applied to the fifth generation (5G) communication system, as well as the fourth generation (4G) and third generation (3G) communication systems. It can also be applied to various new communication systems in the future, such as the sixth generation (6G) and seventh generation (7G), etc. The embodiments of the present application are not limited to this.

[0114] The technical solution of the present application is also applicable to different network architectures, including but not limited to non-terrestrial network architecture (NTN), relay network architecture, and dual-link architecture.

[0115] The devices in the embodiments of the present application include network devices and terminal devices.

[0116] The network equipment in the embodiment of the present application includes a base station and a base station controller of the access network, and may also include a terminal.

[0117] The base station (BS) in the embodiment of the present application, which may also be referred to as a base station device, is a device deployed in a radio access network (RAN) to provide wireless communication functions. For example, the device providing base station functions in a 2G network includes a base transceiver station (BTS), the device providing base station functions in a 3G network includes a node B (NodeB), the device providing base station functions in a 4G network includes an evolved node B (eNB), and in wireless local area networks (WLANs), the device providing base station functions is an access point (AP), the device providing base station functions in 5G New Radio (NR) is a gNB, and the evolved node B (ng-eNB), wherein the gNB and the terminal communicate using NR technology, and the ng-eNB and the terminal communicate using Evolved Universal Terrestrial Radio Access (E-UTRA) technology, and both gNB and ng-eNB can be connected to the 5G core network. The base station in the embodiment of the present application also includes a device that provides base station functions in a future new communication system, etc.

[0118] The base station controller in the embodiment of the present application, which may also be referred to as a base station controller device, is a device for managing base stations, such as a base station controller (BSC) in a 2G network, a radio network controller (RNC) in a 3G network, and may also refer to a device for controlling and managing base stations in future new communication systems.

[0119] The terminal in the embodiments of the present application may also be referred to as a terminal device, and may refer to various forms of user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent or user device. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a future 5G network, or a terminal device in a future evolved Public Land Mobile Network (PLMN), etc., and the embodiments of the present application are not limited to this.

[0120] FIG3 is a flow chart of one of the registration methods provided in an embodiment of the present application. As shown in FIG3 , the method includes:

[0121] S301. The terminal (UE) sends a NAS message to the first network device (gNB1).

[0122] The terminal is waiting to be registered with the ground network.

[0123] There is no link between the first network device and the terrestrial network.

[0124] The NAS message is used to request registration with the terrestrial network. For example, the NAS message may be a registration request message or an attach request message.

[0125] The terminal can register with the terrestrial network based on the NAS response message corresponding to the NAS message. The NAS response message can be, for example, a registration response message or an attach request message.

[0126] S302: The first network device sends first connection release information to the terminal, where the first connection release information is used to instruct the terminal to suspend a registration process.

[0127] The first link release information is used to release the link between the first network device and the terminal, so that the terminal enters an idle state.

[0128] After receiving the NAS message, the first network device stores the NAS message.

[0129] Optionally, the first link release information includes the timing duration of the first timer and / or the timing duration of the second timer. Optionally, the timing duration of the first timer is the interval duration of the next earliest scheduled terminal. Optionally, the timing duration of the second timer is the interval duration of the next latest scheduled terminal.

[0130] The terminal suspends the registration process, which means that the registration process is not interrupted (stopped), that is, the registration process can be considered to be suspended (suspended).

[0131] If the registration process is interrupted, you can only restart the registration process.

[0132] In the event that the registration process is suspended, you can resume the registration process without having to initiate it again.

[0133] Optionally, when the registration process is suspended, a timer related to the registration process (the timer of the registration process itself, which is the prior art) may continue to run, or may be suspended until the process is resumed and then continued to run.

[0134] S303: The terminal starts a first timer and / or a second timer.

[0135] Optionally, the terminal can set the timing duration of the first timer to the timing duration of the first timer in the first link release information and start the first timer; and / or, the terminal can set the timing duration of the second timer to the timing duration of the second timer in the first link release information and start the second timer.

[0136] Optionally, the terminal may also set the timing duration of the first timer to a value specified in the protocol, and / or the terminal may set the timing duration of the second timer to a value specified in the protocol.

[0137] S304. The terminal sends a request message to the second network device (gNB2). The request message is used to obtain a NAS response message corresponding to the NAS message.

[0138] Optionally, the terminal may send a request message to the second network device (gNB2) when the first timer expires and the second timer is running.

[0139] The second network device may store a NAS response message, or may not store the NAS response message.

[0140] There may or may not be a link between the second network device and the terrestrial network.

[0141] In a possible implementation, after executing S302, the terminal may execute S305 instead of S303 and S304.

[0142] S305. The terminal sends a request message to the second network device, where the request message is used to obtain a NAS response message corresponding to the NAS message.

[0143] In an embodiment of the present application, a terminal sends a non-access stratum (NAS) message to a first network device, indicating that the terminal is to register with the terrestrial network; and receives a first connection release message from the first network device, wherein the first connection release message instructs the terminal to suspend the registration process. In the above process, if the first network device has no connection with the terrestrial network, the terminal can receive the first connection release message sent by the first network device and suspend the registration process, thereby preventing the terminal's registration process from being interrupted.

[0144] Based on the above embodiment, the registration method provided in the embodiment of the present application is described below with reference to FIG4 , taking the case where the NAS response message is not stored in the second network device and the second network device has no link to the ground network as an example.

[0145] FIG4 is a second flow chart of the registration method provided in an embodiment of the present application. As shown in FIG4 , the method includes:

[0146] S401. The terminal (UE) sends a NAS message to the first network device (gNB1).

[0147] Optionally, the access process between the terminal and the first network device may be a random access channel (RACH) process, or an access process performed in a RACH-free manner (ie, a RACH-less manner).

[0148] For example, when the access process is a RACH process, generally speaking, the RACH process includes the first message (msg1) to the fourth message (msg4). The terminal can send a NAS message to the network device after msg4 of the RACH, or carry the NAS message in the third message (msg3) and send it to the first network device.

[0149] If msg3 carries a NAS message, it means that the terminal is sending a NAS message while accessing.

[0150] S402: The first network device stores the NAS message and sends first connection release information to the terminal, where the first connection release information is used to instruct the terminal to suspend the registration process.

[0151] Optionally, when there is no link between the first network device and the ground network, S402 is executed.

[0152] Specifically, the execution method of S402 is the same as the execution method of S302, and the execution process of S402 is not repeated here.

[0153] S403: The terminal starts the first timer and / or the second timer.

[0154] Specifically, the execution method of S403 is the same as the execution method of S303, and the execution process of S404 is not repeated here.

[0155] S404: Before the first timer expires, the first network device sends initial terminal information (initial UE message) to the terrestrial network.

[0156] Optionally, before the first timer times out, if there is a link between the first network device and the terrestrial network, the first network device sends initial terminal information to the terrestrial network.

[0157] S405. The ground network generates a NAS response message corresponding to the NAS message according to the initial terminal information.

[0158] S406: The ground network sends a NAS response message to the second network device.

[0159] Optionally, when there is a link between the ground network (TN) and the second network device (gNB2), the ground network sends a NAS response message to the second network device.

[0160] The second network device stores the NAS response message.

[0161] S407. The terminal sends a request message to the second network device, where the request message is used to obtain a NAS response message corresponding to the NAS message.

[0162] In the present application, the request message includes the permanent identity of the terminal and / or the second indication information.

[0163] The second indication information is used to instruct to obtain a NAS response message.

[0164] Optionally, after the first timer times out, if the terminal has not saved a valid temporary identity, the terminal and the second network device perform an access process (ie, start trying to access the second network device), and execute S407.

[0165] The second network device is a network device that can provide services to the terminal.

[0166] After the first timer times out, if the terminal has saved a valid temporary identity, a paging process for the terminal can be executed without the need for the terminal to perform an access process with the second network device.

[0167] The temporary identity identifier can be, for example, a 5G S-Temporary Mobile Subscription Identifier (5G-S-TSMI).

[0168] S408: The second network device sends a NAS response message to the terminal.

[0169] Optionally, the second network device may query its stored NAS response message according to the permanent identity of the terminal to obtain a NAS response message corresponding to the terminal, and then send the NAS response message to the terminal according to the second indication information.

[0170] S409: The terminal stops the second timer, and the terminal registration is successful.

[0171] It should be noted that, when executing any one of steps S405 to S408 , if the second timer times out, the terminal determines that the registration process has failed.

[0172] After the registration process fails, the terminal can re-initiate the NAS process, which includes the initial registration process and / or the attach process.

[0173] In the registration method provided in the embodiment of Figure 4, the terminal first attempts to access the ground network through the first network device. When there is no link between the first network device and the ground network, the first network device can send a first link release message to the terminal, and the terminal starts a first timer and / or a second timer according to the first link release information. After the first timer times out, the terminal sends a request message to the second network device. The request message is used to obtain a NAS response message corresponding to the NAS message, which can prevent the registration process of the terminal from being interrupted, and attempts to access the ground network through the second network device, thereby preventing the registration process of the terminal from being interrupted.

[0174] Based on the above embodiment, the registration method provided in the embodiment of the present application is described below with reference to FIG5 , taking the case where the NAS response message is not stored in the second network device as an example.

[0175] FIG5 is a third flow chart of the registration method provided in an embodiment of the present application. As shown in FIG5 , the method includes:

[0176] S501. A terminal sends a NAS message to a first network device.

[0177] S502: The first network device stores the NAS message and sends first link release information to the terminal.

[0178] S503: The terminal starts a first timer and / or a second timer.

[0179] S504: Before the first timer expires, the first network device sends initial terminal information (initial UE message) to the terrestrial network.

[0180] Specifically, the execution method of S501 to S504 is the same as the execution method of S401 to S404, and the execution process of S501 to S504 is not repeated here.

[0181] S505. The terrestrial network (TN) generates a NAS response message corresponding to the NAS message according to the initial terminal information.

[0182] S506. The ground network sends a NAS response message to the third network device (gNB3).

[0183] Optionally, when there is a link between the ground network and the third network device, S506 is executed.

[0184] The third network device stores the NAS response message.

[0185] S507: After the first timer times out, the terminal sends a request message to the second network device, where the request message is used to obtain a NAS response message corresponding to the NAS message.

[0186] Optionally, after the first timer times out, if the terminal has not saved a valid temporary identity, the terminal and the second network device perform an access process to try to access the second network device, and thus S507 is executed.

[0187] The second network device is a network device that can provide services to the terminal.

[0188] S508: The second network device sends a second link release message to the terminal, where the second link release message instructs the terminal to suspend the registration process.

[0189] Optionally, when the NAS response message is not stored in the second network device, S508 is executed.

[0190] The second network device may be linked to the ground network or may not be linked to the ground network.

[0191] The second link release information instructs the terminal to enter an idle state.

[0192] Optionally, the second link release information includes a new timing duration of the first timer and / or first indication information. The first indication information is used to indicate that the NAS response message is not stored.

[0193] S509: The terminal sends a request message to the next network device (for example, the third network device), where the request message is used to obtain a NAS response message corresponding to the NAS message.

[0194] Optionally, after the first timer is started or restarted and the first timer times out, S509 is executed.

[0195] Optionally, when the second link release information includes the new timing duration of the first timer, the terminal sets the timing duration of the first timer to the new timing duration of the first timer in the second link release information, and starts the first timer. After the first timer times out again, executes S509.

[0196] Optionally, when the second link release information does not include the new timing duration of the first timer, the terminal again sets the timing duration of the first timer to the new timing duration of the first timer in the first link release information, and restarts the first timer. After the first timer times out, executes S509.

[0197] Specifically, the execution method of S509 is the same as the execution method of S507, which will not be repeated here.

[0198] In S509, if the next network device is not the third network device but the fourth network device (gNB4), a process similar to S509 is repeated until the third network device is reached to obtain a NAS response message.

[0199] S510: The third network device sends second link release information to the terminal.

[0200] Optionally, when the NAS response message is stored in the third network device, S510 is executed.

[0201] S511: The terminal stops the second timer, and the terminal registration is successful.

[0202] It should be noted that, when executing any one of steps S505 to S511, if the second timer times out, the terminal determines that the registration process has failed.

[0203] After the registration process fails, the terminal can re-initiate the NAS process, which includes the initial registration process and / or the attach process.

[0204] FIG6 is a schematic diagram of a structure of a registration device according to an embodiment of the present application. The registration device 60 is provided on a terminal. As shown in FIG6 , the registration device 60 includes:

[0205] A first sending module 601 is configured to send a non-access stratum (NAS) message to a first network device, wherein the terminal is to be registered with the terrestrial network;

[0206] The first receiving module 602 is configured to receive first link release information sent by the first network device, where the first link release information is used to instruct the terminal to suspend a registration process.

[0207] The registration device 60 provided in the embodiment of the present application can execute the method steps performed by the terminal in the technical solution shown in the above method embodiment. Its implementation principles and beneficial effects are similar and will not be repeated here.

[0208] In a possible implementation, the first link release information includes a timing duration of a first timer and / or a timing duration of a second timer.

[0209] In a possible implementation, the registration device 60 further includes:

[0210] A control module is configured to start the first timer and / or the second timer.

[0211] In a possible implementation, the first sending module 601 is further configured to:

[0212] When the first timer times out and the second timer is running, a request message is sent to the second network device, where the request message is used to obtain a NAS response message corresponding to the NAS message.

[0213] In a possible implementation, the first receiving module 602 is further configured to receive the NAS response message sent by the second network device;

[0214] The control module is further configured to stop the second timer.

[0215] In a possible implementation, the first receiving module 602 is further configured to:

[0216] In a case where the NAS response message is stored in the second network device, the NAS response message sent by the second network device is received.

[0217] In a possible implementation, the first receiving module 602 is further configured to:

[0218] Receive second link release information sent by the second network device, where the second link release information is used to instruct the terminal to suspend a registration process.

[0219] In a possible implementation, the first receiving module 602 is further configured to:

[0220] In a case where the second network device does not store the NAS response message, second link release information sent by the second network device is received.

[0221] In a possible implementation, the second link release information includes a new timing duration of the first timer and / or first indication information;

[0222] The first indication information is used to indicate that the NAS response message is not stored.

[0223] In a possible implementation, the control module is further configured to:

[0224] Start or restart the first timer.

[0225] In a possible implementation, when the second timer times out, it is determined that the registration process has failed.

[0226] In a possible implementation manner, the request message includes the permanent identity of the terminal and / or the second indication information;

[0227] The second indication information is used to instruct to obtain the NAS response message.

[0228] The registration device 60 provided in the embodiment of the present application can execute the method steps performed by the terminal in the technical solution shown in the above method embodiment. Its implementation principles and beneficial effects are similar and will not be repeated here.

[0229] FIG7 is a second structural diagram of a registration device provided in an embodiment of the present application. The registration device 70 is provided on a first network device. As shown in FIG7 , the registration device 70 includes:

[0230] A second receiving module 701 is configured to receive a NAS message sent by the terminal;

[0231] The second sending module 702 is configured to send first link release information to the terminal, where the first link release information is used to instruct the terminal to suspend a registration process.

[0232] The registration device 70 provided in the embodiment of the present application is used to execute the method steps performed by the first network device in the technical solution shown in the above method embodiment. Its implementation principles and beneficial effects are similar and will not be repeated here.

[0233] In a possible implementation, the first link release information includes a timing duration of a first timer and / or a timing duration of a second timer.

[0234] FIG8 is a third structural diagram of a registration device provided in an embodiment of the present application. The registration device 80 is provided on the second network device. As shown in FIG8 , the registration device 80 includes:

[0235] The third receiving module 801 is configured to receive a request message sent by the terminal, where the request message is used to obtain a NAS response message corresponding to the NAS message.

[0236] The registration device 80 provided in the embodiment of the present application can execute the method steps performed by the second network device in the technical solution shown in the above method embodiment. Its implementation principles and beneficial effects are similar and will not be repeated here.

[0237] In a possible implementation, the registration device 80 further includes:

[0238] The third sending module 802 is configured to send the NAS response message to the terminal when the NAS response message is stored in the second network device.

[0239] In a possible implementation, the registration device 80 further includes:

[0240] The third sending module 802 is configured to send second link release information to the terminal when the second network device does not store the NAS response message, where the second link release information is used to instruct the terminal to suspend the registration process.

[0241] In a possible implementation, the second link release information includes a new timing duration of the first timer and / or first indication information;

[0242] The first indication information is used to indicate that the NAS response message is not stored.

[0243] In a possible implementation manner, the request message includes the permanent identity of the terminal and / or the second indication information;

[0244] The second indication information is used to instruct to obtain the NAS response message.

[0245] The registration device 80 provided in the embodiment of the present application can execute the method steps performed by the second network device in the technical solution shown in the above method embodiment. Its implementation principles and beneficial effects are similar and will not be repeated here.

[0246] Figure 9 is a fourth schematic diagram of the structure of a registration device provided in an embodiment of the present application. As shown in Figure 9, the registration device 90 may include: a memory 901, a processor 902, and a transceiver 903. The transceiver 903 may include: a transmitter and / or a receiver. The transmitter may also be referred to as a transmitter, a transmitter, a transmitting port, a transmitting interface, or similar descriptions, and the receiver may also be referred to as a receiver, a receiving port, a receiving interface, or similar descriptions. For example, the memory 901, the processor 902, and the transceiver 903 are interconnected via a bus 904.

[0247] The memory 901 is used to store program instructions.

[0248] The processor 902 is configured to execute the program instructions stored in the memory to implement the method steps executed by the terminal in the above method embodiment.

[0249] Figure 10 is a fifth structural diagram of a registration device provided in an embodiment of the present application. As shown in Figure 10, the registration device 100 may include: a memory 1001, a processor 1002, and a transceiver 1003. The transceiver 1003 may include: a transmitter and / or a receiver. The transmitter may also be referred to as a transmitter, a transmitter, a transmitting port, a transmitting interface, or similar descriptions, and the receiver may also be referred to as a receiver, a receiving port, a receiving interface, or similar descriptions. For example, the memory 1001, the processor 1002, and the transceiver 1003 are interconnected via a bus 1004.

[0250] The memory 1001 is used to store program instructions.

[0251] The processor 1002 is configured to execute the program instructions stored in the memory to implement the method steps performed by the first network device in the above method embodiment.

[0252] Figure 11 is a sixth structural diagram of a registration device provided in an embodiment of the present application. As shown in Figure 11, the registration device 110 may include: a memory 1101, a processor 1102, and a transceiver 1103. The transceiver 1103 may include: a transmitter and / or a receiver. The transmitter may also be referred to as a transmitter, a transmitter, a transmitting port, a transmitting interface, or similar descriptions, and the receiver may also be referred to as a receiver, a receiving port, a receiving interface, or similar descriptions. For example, the memory 1101, the processor 1102, and the transceiver 1103 are interconnected via a bus 1104.

[0253] The memory 1101 is used to store program instructions.

[0254] The processor 1102 is configured to execute the program instructions stored in the memory to implement the method steps performed by the second network device in the above method embodiment.

[0255] All or part of the steps of the above-mentioned method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a readable memory. When the program is executed, it performs the steps of the above-mentioned method embodiments; and the aforementioned memory (or storage medium) includes: read-only memory (ROM), random access memory (RAM), flash memory, hard disk, solid state drive, magnetic tape, floppy disk, optical disc, and any combination thereof.

[0256] An embodiment of the present application provides a computer-readable storage medium, which stores computer-executable instructions. When the computer-executable instructions are executed by a processor, they are used to implement the method of the above method embodiment.

[0257] An embodiment of the present application also provides a computer program product, including a computer program. When the computer program is executed by a processor, it can implement the method shown in the above method embodiment.

[0258] An embodiment of the present application provides a chip having a computer program stored thereon. When the computer program is executed by the chip, the method of any one of the first aspect, or the second aspect, or any one of the third aspects is implemented.

[0259] An embodiment of the present application provides a chip module having a computer program stored thereon. When the computer program is executed by the chip module, the method of any one of the first aspect, the second aspect, or the third aspect is implemented.

[0260] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0261] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0262] Obviously, those skilled in the art may make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations.

[0263] In this application, the term "include" and its variations may refer to non-restrictive inclusion; the term "or" and its variations may refer to "and / or". In this application, the terms "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In this application, "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship.

Claims

1. A registration method, characterized in that, For a terminal, the method includes: Sending a non-access stratum (NAS) message to a first network device, where the terminal is to be registered to a terrestrial network; Receiving first link release information sent by the first network device, where the first link release information is used to instruct the terminal to suspend the registration process.

2. The method according to claim 1, wherein The first link release information includes the timing duration of a first timer and / or the timing duration of a second timer.

3. The method according to claim 1 or 2, characterized in that, The method further includes: Starting the first timer and / or the second timer.

4. The method according to claim 3, wherein The method further includes: When the first timer expires and the second timer is running, sending a request message to a second network device, where the request message is used to obtain a NAS response message corresponding to the NAS message.

5. The method according to claim 4, characterized in that The method further includes: Receiving the NAS response message sent by the second network device and stopping the second timer.

6. The method according to claim 5, wherein The receiving the NAS response message sent by the second network device includes: When the NAS response message is stored in the second network device, receiving the NAS response message sent by the second network device.

7. The method according to claim 4, characterized in that The method further includes: Receiving second link release information sent by the second network device, where the second link release information is used to instruct the terminal to suspend the registration process.

8. The method according to claim 7, wherein The receiving the second link release information sent by the second network device includes: When the NAS response message is not stored in the second network device, receiving the second link release information sent by the second network device.

9. The method according to claim 7 or 8, characterized in that The second link release information includes the new timing duration of the first timer and / or first indication information; The first indication information is used to indicate that the NAS response message is not stored.

10. The method according to claim 9, characterized in that, The method further includes: Starting or restarting the first timer.

11. The method according to any one of claims 4 to 10, characterized in that, When the second timer expires, determining that the registration process fails.

12. The method according to any one of claims 4 to 11, characterized in that, The request message includes the permanent identity of the terminal and / or second indication information; The second indication information is used to indicate obtaining the NAS response message.

13. A registration method, characterized in that, Applied to a first network device, the method includes: Receiving a NAS message sent by a terminal; Sending first link release information to the terminal, where the first link release information is used to instruct the terminal to suspend the registration process.

14. The method according to claim 13, wherein The first link release information includes the timing duration of a first timer and / or the timing duration of a second timer.

15. A registration method, characterized in that, Applied to a second network device, the method includes: Receiving a request message sent by a terminal, where the request message is used to obtain a NAS response message corresponding to the NAS message.

16. The method according to claim 15, characterized in that, The method further includes: When the NAS response message is stored in the second network device, sending the NAS response message to the terminal.

17. The method according to claim 15, wherein The method further includes: When the NAS response message is not stored in the second network device, sending second link release information to the terminal, where the second link release information is used to instruct the terminal to suspend the registration process.

18. The method according to claim 17, wherein The second link release information includes the new timing duration of the first timer and / or first indication information; The first indication information is used to indicate that the NAS response message is not stored.

19. The method according to any one of claims 15 to 18, characterized in that The request message includes the permanent identity of the terminal and / or second indication information; The second indication information is used to indicate obtaining the NAS response message.

20. A registration device, characterized in that, Applied to a terminal, the apparatus includes: A first sending module, configured to send a non-access stratum (NAS) message to a first network device, where the terminal is to be registered to a terrestrial network; A first receiving module, configured to receive first link release information sent by the first network device, where the first link release information is used to indicate that the terminal suspends the registration process.

21. A registration device, characterized in that, Applied to a first network device, the apparatus includes: A second receiving module, configured to receive a NAS message sent by a terminal; A second sending module, configured to send first link release information to the terminal, where the first link release information is used to indicate that the terminal suspends the registration process.

22. A registration device, characterized in that, Applied to a second network device, the apparatus includes: A third receiving module, configured to receive a request message sent by a terminal, where the request message is used to obtain a NAS response message corresponding to the NAS message.

23. A registration device, characterized in that, Comprising: A memory and a processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor executes the method according to any one of claims 1 to 12.

24. A registration device, characterized in that, Comprising: A memory and a processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor executes the method according to claim 13 or 14.

25. A registration device, characterized in that, Comprising: A memory and a processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor executes the method according to any one of claims 15 to 19.

26. A computer-readable storage medium, characterized in that, Computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a computer, the method according to any one of claims 1 to 12, or claim 13 or 14, or any one of claims 15 to 19 is implemented.

27. A computer program product, characterized in that, Comprising a computer program, which when executed by a computer implements the method according to any one of claims 1 to 12, or claim 13 or 14, or any one of claims 15 to 19.

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