NAS timer processing method and device, terminal and network side equipment

Abstract

The invention discloses an NAS timer processing method and device, a terminal and network side equipment, and belongs to the technical field of communication, and the method comprises the steps that in a store-and-forward operation mode, the terminal executes a first operation; wherein the first operation comprises any one of the following items: not starting a first non-access stratum (NAS) timer; setting a value of a first NAS timer based on a first time value, the first time value being a time value for the store-and-forward operation mode; and setting a first NAS timer based on first information, wherein the first information is used for indicating storage and forwarding operation auxiliary information.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to a method and apparatus for processing a NAS timer, a terminal, and a network-side device. Background Art

[0002] The Non-Access Stratum (NAS) timer is a variety of guard timers for communication between a terminal and a core network control node, which can ensure the normal sending and receiving of NAS messages. In the Store-and-Forward (S&F) operation mode, since the NAS messages of the terminal need to be relayed through a satellite, the service link becomes longer, and the probability of the NAS timer timing out is relatively high, resulting in a relatively high probability of failure of the NAS process of the terminal. Summary of the Invention

[0003] Embodiments of this application provide a method and apparatus for processing a NAS timer, a terminal, and a network-side device, which can solve the problem of a relatively high probability of failure of the NAS process of the terminal.

[0004] In a first aspect, a method for processing a NAS timer is provided, including:

[0005] In the Store-and-Forward operation mode, the terminal performs a first operation;

[0006] Wherein, the first operation includes any one of the following:

[0007] Not starting a first Non-Access Stratum (NAS) timer;

[0008] Setting the value of the first NAS timer based on a first time value, where the first time value is a time value for the Store-and-Forward operation mode;

[0009] Setting the first NAS timer based on first information, where the first information is used to indicate Store-and-Forward operation assistance information.

[0010] In a second aspect, a method for processing a NAS timer is provided, including:

[0011] In the Store-and-Forward operation mode, the core network device performs a second operation;

[0012] Wherein, the second operation includes any one of the following:

[0013] Not starting a second NAS timer;

[0014] Setting the value of the second NAS timer based on a second time value;

[0015] Setting the second NAS timer based on the first information;

[0016] Send the first information to the terminal;

[0017] Among them, the first information is used to indicate the store-and-forward operation assistance information, and the second time value is the time value for the store-and-forward operation mode.

[0018] In a third aspect, a NAS timer processing device is provided. The terminal includes the NAS timer processing device, including:

[0019] An execution module, configured to execute a first operation in the store-and-forward operation mode;

[0020] Among them, the first operation includes any one of the following:

[0021] Do not start the first non-access stratum (NAS) timer;

[0022] Set the value of the first NAS timer based on a first time value, where the first time value is the time value for the store-and-forward operation mode;

[0023] Set the first NAS timer based on the first information, where the first information is used to indicate the store-and-forward operation assistance information.

[0024] In a fourth aspect, a NAS timer processing device is provided. The core network device includes the NAS timer processing device, including:

[0025] An execution module, configured to execute a second operation in the store-and-forward operation mode;

[0026] Among them, the second operation includes any one of the following:

[0027] Do not start the second NAS timer;

[0028] Set the value of the second NAS timer based on a second time value;

[0029] Set the second NAS timer based on the first information;

[0030] Send the first information to the terminal;

[0031] Among them, the first information is used to indicate the store-and-forward operation assistance information, and the second time value is the time value for the store-and-forward operation mode.

[0032] In a fifth aspect, a terminal is provided. The terminal includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0033] In a sixth aspect, a network-side device is provided. The network-side device includes a processor and a memory. The memory stores a program or instructions that can run on the processor. When the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0034] In a seventh aspect, a terminal is provided, including a processor and a communication interface. Among them, the processor is used for:

[0035] In the store-and-forward operation mode, perform a first operation;

[0036] Among them, the first operation includes any one of the following:

[0037] Do not start the first non-access stratum (NAS) timer;

[0038] Set the value of the first NAS timer based on a first time value, where the first time value is a time value for the store-and-forward operation mode;

[0039] Set the first NAS timer based on first information, where the first information is used to indicate store-and-forward operation assistance information.

[0040] In an eighth aspect, a network-side device is provided. The network-side device is a core network device and includes a processor and a communication interface. Among them, the processor is used for:

[0041] In the store-and-forward operation mode, perform a second operation;

[0042] Among them, the second operation includes any one of the following:

[0043] Do not start the second NAS timer;

[0044] Set the value of the second NAS timer based on a second time value;

[0045] Set the second NAS timer based on the first information;

[0046] Send the first information to the terminal;

[0047] Among them, the first information is used to indicate store-and-forward operation assistance information, and the second time value is a time value for the store-and-forward operation mode.

[0048] In a ninth aspect, a NAS timer processing system is provided, including: a terminal and a network-side device. The terminal can be used to execute the steps of the method described in the first aspect, and the network-side device can be used to execute the steps of the method described in the second aspect.

[0049] In a tenth aspect, a readable storage medium is provided, on which a program or instructions are stored, and when the program or instructions are executed by a processor, the steps of the method described in the first aspect or the steps of the method described in the second aspect are implemented.

[0050] In an eleventh aspect, a chip is provided, which includes a processor and a communication interface. The communication interface is coupled to the processor, and the processor is configured to run a program or instructions to implement the method described in the first aspect or the method described in the second aspect.

[0051] In a twelfth aspect, a computer program / program product is provided, which is stored in a storage medium, and the computer program / program product is executed by at least one processor to implement the steps of the method described in the first aspect or the steps of the method described in the second aspect.

[0052] In the embodiments of the present application, in the store-and-forward operation mode, the NAS timer is not started; or, the NAS timer in the store-and-forward operation mode is set based on a first time value; or, the NAS timer in the store-and-forward operation mode is set based on first information; in this way, in the store-and-forward operation mode, the general NAS timer is avoided, and the NAS timer in the store-and-forward operation mode is specifically set, which can reduce the probability of the NAS process failure of the terminal. Description of the Drawings

[0053] Figure 1 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0054] Figure 2 is a schematic diagram of a non-terrestrial network provided by the embodiments of the present application;

[0055] Figure 3 is one of the flowcharts of a method for processing a NAS timer provided by the embodiments of the present application;

[0056] Figure 4 is another flowchart of a method for processing a NAS timer provided by the embodiments of the present application;

[0057] Figure 5 is yet another flowchart of a method for processing a NAS timer provided by the embodiments of the present application;

[0058] Figure 6 is still another flowchart of a method for processing a NAS timer provided by the embodiments of the present application;

[0059] Figure 7 is a further flowchart of a method for processing a NAS timer provided by the embodiments of the present application;

[0060] Figure 8 It is the sixth flowchart of a NAS timer processing method provided by an embodiment of the present application;

[0061] Figure 9 It is one of the structural schematic diagrams of a NAS timer processing device provided by an embodiment of the present application;

[0062] Figure 10 It is the second structural schematic diagram of a NAS timer processing device provided by an embodiment of the present application;

[0063] Figure 11 It is the structural schematic diagram of a communication device provided by an embodiment of the present application;

[0064] Figure 12 It is the structural schematic diagram of a terminal provided by an embodiment of the present application;

[0065] Figure 13 It is the structural schematic diagram of a network - side device provided by an embodiment of the present application. Detailed implementation manners

[0066] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope protected by the present application.

[0067] The terms "first", "second", etc. in the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first" and "second" are usually of the same category, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "or" in the present application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally indicates an "or" relationship between the associated objects before and after.

[0068] The term "indication" in this application can be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). Among them, a direct indication can be understood as that the sender clearly informs the receiver of specific information, operations to be performed, request results, etc. in the sent indication; an indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or makes a judgment and determines the operations to be performed or request results, etc. according to the judgment result.

[0069] It should be noted that the technology described in the embodiments of this application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, and can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used not only in the systems and radio technologies mentioned above, but also in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and uses NR terms in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th Generation (6G) communication system. th Generation, 6G) communication system.

[0070] Figure 1The block diagram of a wireless communication system to which the embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can be a mobile phone, a tablet personal computer, a laptop computer, a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device, a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home devices with wireless communication functions, such as refrigerators, TVs, washing machines, or furniture, etc.), a game console, a personal computer (PC), a teller machine, or a self-service machine, etc. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle user equipment can also be referred to as a vehicle terminal, a vehicle controller, a vehicle module, a vehicle component, a vehicle chip, or a vehicle unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network-side device 12 can include an access network device or a core network device. Among them, the access network device can also be referred to as a radio access network (RAN) device, a radio access network function, or a radio access network unit. The access network device can include a base station, a wireless local area network (WLAN) access point (AP), or a wireless fidelity (WiFi) node, etc.Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home Node B (HNB), home evolved Node B, Transmission Reception Point (TRP), or some other suitable term in the art. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of this application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0071] The core network device may include, but is not limited to, at least one of the following: core network node, core network function, Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), Binding Support Function (BSF), Application Function (AF), Location Management Function (LMF), Gateway Mobile Location Centre (GMLC), Network Data Analytics Function (NWDAF), etc. It should be noted that in the embodiments of this application, only the core network devices in the NR system are taken as examples for introduction, and the specific types of core network devices are not limited.

[0072] For ease of understanding, some terms related to the embodiments of this application are explained below:

[0073] 1. NAS timer

[0074] The NAS timer is various guard timers for communication between a User Equipment (UE, i.e., the terminal) and the core network control node. The value of the NAS timer is usually at the second or minute level, which is a mechanism to ensure the normal sending and receiving of a NAS message. For example, after the UE sends an attach request, it starts T3410 (15s). When the attach request is accepted or rejected, the UE stops T3410. However, when T3410 times out, it means the UE has not received any response to the attach request, and the UE considers that there is a problem with the attach process (such as poor radio link quality or damage to core network elements, etc.). The UE will abandon the attach process and locally release the NAS connection. The UE and the network each maintain the NAS timer.

[0075] The extended NAS timer is a special extension of the value of the NAS timer due to issues such as MTC, because of enhanced coverage (such as the increased response time of the NAS layer due to the longer air interface transmission delay). For example, for NB IoT with a longer air interface delay, the NAS timer related to mobility management is increased by 240s, and the NAS timer related to session management is increased by 180s.

[0076] 2. Non-Terrestrial Network (NTN)

[0077] Compared with terrestrial communication systems, satellite-based non-terrestrial communication systems have a wider coverage range. Typical applicable scenarios include situations where it is impossible to build terrestrial base stations or terrestrial base stations are damaged, such as continuous coverage in remote mountainous areas, deserts, oceans, or forests. Typical scenarios of satellite-based non-terrestrial communication systems include the transparent relay type, that is, the satellite acts as a relay, as Figure 2 shown. Among them, the link between the satellite and the terminal is the Service Link, and the link between the satellite and the terrestrial base station is the Feeder Link.

[0078] The Store and Forward (S&F) operation mode is an operation mode of a 5G system with satellite access. When the satellite connection is intermittent or temporarily unavailable, the 5G system can provide a certain degree of service (such as storing and forwarding data) to provide communication services for terminals under satellite coverage without having to establish an active feeder connection with the ground station at the same time.

[0079] Next, in conjunction with the accompanying drawings, through some embodiments and their application scenarios, the NAS timer processing method, device, terminal, and network-side device provided by the embodiments of the present application will be described in detail.

[0080] See Figure 3 ,Figure 3 It is a flowchart of a method for processing a NAS timer provided by an embodiment of the present application. As Figure 3 shown, the method for processing a NAS timer includes the following steps:

[0081] Step 101, in the store-and-forward operation mode, the terminal performs a first operation;

[0082] Among them, the first operation includes any one of the following:

[0083] Do not start the first non-access stratum (NAS) timer;

[0084] Set the value of the first NAS timer based on a first time value, where the first time value is a time value for the store-and-forward operation mode;

[0085] Set the first NAS timer based on first information, where the first information is used to indicate store-and-forward operation assistance information.

[0086] Among them, the first NAS timer is the NAS timer in the store-and-forward operation mode.

[0087] Among them, not starting the first NAS timer can be understood as not starting the NAS timer in the store-and-forward operation mode.

[0088] In addition, the first time value can be a pre-configured timer value; or a timer value predefined by the protocol.

[0089] In one implementation, the first time value is a time value dedicated to the store-and-forward operation mode.

[0090] Among them, the "in the store-and-forward operation mode" can be understood as the terminal being in the store-and-forward operation mode; or it can be understood as the terminal and the core network device being in the store-and-forward operation mode, where the core network device is the core network device connected to the terminal; or it can be understood as the terminal, the access network device, and the core network device being in the store-and-forward operation mode, where the access network device is the access network device connected to the terminal, and the core network device is the core network device connected to the terminal.

[0091] In addition, before the terminal performs the first operation, it can determine whether it is in the store-and-forward operation mode. The determination of whether it is in the store-and-forward operation mode can be understood as the terminal determining whether the terminal is in the store-and-forward operation mode; or it can be understood as the terminal determining whether the terminal and the core network device are in the store-and-forward operation mode, where the core network device is the core network device connected to the terminal; or it can be understood as the terminal determining whether the terminal, the access network device, and the core network device are in the store-and-forward operation mode, where the access network device is the access network device connected to the terminal, and the core network device is the core network device connected to the terminal.

[0092] It should be noted that the store-and-forward operation mode (S&F operation mode) can be understood as a communication mode. The store-and-forward operation mode can also be described as the storage and forward operation mode. The store-and-forward operation mode can also be briefly described as the S&F operation mode. In the store-and-forward operation mode, the NAS messages of the terminal need to be relayed by the satellite.

[0093] In addition, the first NAS timer can be the NAS timer of the terminal in the store-and-forward operation mode, and this first NAS timer can be used for the sending or receiving of NAS messages between the terminal and the core network device.

[0094] In addition, the value of the NAS timer can be the timeout value of the NAS timer.

[0095] In one implementation, the terminal sets the NAS timer (timer) in the store-and-forward operation mode.

[0096] Exemplarily, after determining that it is the store-and-forward operation mode, the terminal uses the pre-configured NAS timer value dedicated to the store-and-forward operation mode; Exemplarily, the terminal determines the NAS timer value of the store-and-forward operation mode according to the first indication information or the first information received from the network side; Exemplarily, when the terminal determines that it is the store-and-forward operation mode, the terminal determines not to start the NAS timer or sets the NAS timer to infinity.

[0097] In one implementation, the terminal obtains the first indication information or the first information, and sets the NAS timer according to the first indication information or the first information;

[0098] In one implementation, the terminal obtaining the first indication information or the first information includes at least one of the following:

[0099] The terminal receives a System Information Block (SIB) message, and the first indication information or the first information is carried in the SIB message;

[0100] The terminal sends an attach request, receives an attach reject message, and the attach reject message carries the first indication information or the first information;

[0101] The terminal sends an attach request, receives an attach accept message, and the attach accept message carries the first indication information or the first information;

[0102] The terminal sends a registration request message and receives a registration reject message, and the registration reject message carries the first indication information or the first information;

[0103] The terminal sends a registration request message and receives a registration accept message, and the registration accept message carries the first indication information or the first information.

[0104] In one implementation, the terminal sets a NAS timer according to the first indication information or the first information, including any one of the following:

[0105] Use the configured NAS timer for the store-and-forward operation mode according to the first indication information;

[0106] Set the NAS timer for the store-and-forward operation mode according to the first information. For example, when setting the NAS timer value, the satellite operation period can be added to the original NAS timer value;

[0107] The terminal sets a NAS timer applicable to the store-and-forward operation mode based on the implementation.

[0108] The terminal abandons the use of the NAS timer in the store-and-forward operation mode.

[0109] In the embodiments of the present application, in the store-and-forward operation mode, the NAS timer is not started; or, the NAS timer in the store-and-forward operation mode is set based on the first time value; or, the NAS timer in the store-and-forward operation mode is set based on the first information; in this way, the general NAS timer is avoided in the store-and-forward operation mode, and the NAS timer in the store-and-forward operation mode is specifically set, which can reduce the probability of failure of the NAS process of the terminal.

[0110] Optionally, before the terminal performs the first operation, the method further includes:

[0111] The terminal determines whether it is in the store-and-forward operation mode according to the pre-configured information.

[0112] Among them, the pre-configuration information can be used to indicate the scope to which the store-and-forward operation mode applies, including but not limited to: geographical location or regional location, network information. The geographical location or regional location can be characterized by geolocation, Tracking Area Identity (TAI), or cell identity (ID). The network information can be characterized by a Public Land Mobile Network (PLMN) ID or a Stand-alone Non-Public Network (SNPN) ID. The terminal can determine whether its geographical location or regional location or network information is within the scope to which the store-and-forward operation mode applies, so as to determine whether it is in the store-and-forward operation mode. Exemplarily, the pre-configuration information can be used to indicate the cell ID of one or more cells to which the store-and-forward operation mode applies. When the cell ID of the cell to which the terminal belongs is among the cell IDs of one or more cells to which the store-and-forward operation mode applies, the terminal determines that it is in the store-and-forward operation mode.

[0113] In this embodiment, the terminal determines whether it is in the store-and-forward operation mode according to the pre-configuration information. When it is determined that the terminal is in the store-and-forward operation mode, the NAS timer is not started; or, the NAS timer in the store-and-forward operation mode is set based on a first time value; or, the NAS timer in the store-and-forward operation mode is set based on a first piece of information; thus, the NAS timer in the store-and-forward operation mode can be specifically set, and the probability of the NAS process failure of the terminal can be reduced.

[0114] Optionally, the pre-configuration information is used to indicate at least one of the following:

[0115] The location information corresponding to the store-and-forward operation mode; the network information corresponding to the store-and-forward operation mode.

[0116] Among them, the location information corresponding to the store-and-forward operation mode may refer to the location information to which the store-and-forward operation mode applies. The network information corresponding to the store-and-forward operation mode may refer to the network information to which the store-and-forward operation mode applies. The location information corresponding to the store-and-forward operation mode may include the geographical location information or regional location information corresponding to the store-and-forward operation mode.

[0117] In one embodiment, the location information may be information indicating the above-mentioned geographical location or regional location.

[0118] In this embodiment, the terminal can determine whether it is in the store-and-forward operation mode based on the location information corresponding to the store-and-forward operation mode or the network information corresponding to the store-and-forward operation mode, so as to be able to perform specific settings on the NAS timer in the store-and-forward operation mode.

[0119] Optionally, the terminal determines whether it is in the store-and-forward operation mode according to pre-configured information, including at least one of the following:

[0120] The terminal determines whether it is in the store-and-forward operation mode based on whether the location information of the terminal matches the location information corresponding to the store-and-forward operation mode;

[0121] The terminal determines whether it is in the store-and-forward operation mode based on whether the selected network information matches the network information corresponding to the store-and-forward operation mode.

[0122] In one embodiment, when the terminal determines that the location information of the terminal matches the location information corresponding to the store-and-forward operation mode, it determines that it is in the store-and-forward operation mode. The matching of the location information of the terminal and the location information corresponding to the store-and-forward operation mode may mean that the geographical location or regional location of the terminal matches the geographical location or regional location applicable to the store-and-forward operation mode. The matching of the geographical location or regional location of the terminal and the geographical location or regional location applicable to the store-and-forward operation mode can be understood as that the geographical location or regional location of the terminal is within the geographical location or regional location applicable to the store-and-forward operation mode. Exemplarily, if the geolocation of the terminal is within the geolocation applicable to the store-and-forward operation mode, it can be considered that the location information of the terminal matches the location information corresponding to the store-and-forward operation mode; or, if the TAI of the terminal is within the TAI applicable to the store-and-forward operation mode, it can be considered that the location information of the terminal matches the location information corresponding to the store-and-forward operation mode; or, if the cell ID of the cell to which the terminal belongs is within the cell ID of one or more cells applicable to the store-and-forward operation mode, it can be considered that the location information of the terminal matches the location information corresponding to the store-and-forward operation mode.

[0123] In one implementation, when the terminal determines that the selected network information matches the network information corresponding to the store-and-forward operation mode, it determines that it is in the store-and-forward operation mode. That the selected network information matches the network information corresponding to the store-and-forward operation mode can be understood as that the network selected by the terminal is among the networks applicable to the store-and-forward operation mode. By way of example, the network information corresponding to the store-and-forward operation mode includes a PLMN ID. If the PLMN ID of the network selected by the terminal is within the PLMN IDs included in the network information corresponding to the store-and-forward operation mode, it can be considered that the selected network information matches the network information corresponding to the store-and-forward operation mode.

[0124] In one implementation, when the terminal determines that the selected network information matches the network information corresponding to the store-and-forward operation mode and the location information of the terminal matches the location information corresponding to the store-and-forward operation mode, it determines that it is in the store-and-forward operation mode.

[0125] Optionally, before the terminal performs a first operation in the store-and-forward operation mode, the method further includes:

[0126] The terminal determines whether it is in the store-and-forward operation mode based on first indication information;

[0127] The first indication information is used to indicate at least one of the following:

[0128] Whether a first cell supports the store-and-forward operation mode;

[0129] One or more cells in the store-and-forward operation mode;

[0130] Whether the cell where the terminal is located is in the store-and-forward operation mode;

[0131] Whether the cell where the terminal is located supports the store-and-forward operation mode;

[0132] Whether the terminal is in the store-and-forward operation mode;

[0133] Whether the terminal supports the store-and-forward operation mode;

[0134] Whether the store-and-forward operation mode is available.

[0135] Among them, the terminal can obtain the first indication information from an access network device (such as a base station), and the first indication information can be included in a broadcast message or a Radio Resource Control (RRC) message. For example, the broadcast message can be SIB31 (System Information Block Type 31) or SIB32, and the RRC message can be an RRC connection reconfiguration message or an RRC connection establishment message; or, the terminal can obtain the first indication information from a core network device (such as an MME), and the first indication information can be carried in a response message of the core network device to a first message sent by the terminal. The first message can include: a registration request message, an attachment request message, a tracking area update request message, a service request message, a deregistration request message, and so on.

[0136] Optionally, the terminal can obtain the first indication information from an access network device (such as a base station), including the access network device (such as a base station) broadcasting the first indication information, and the terminal obtaining the first indication information from the underlying layer. Exemplarily, the first indication information can specifically be: "store-and-forward operation mode indication", or "store-and-forward operation mode available".

[0137] It should be noted that the access network device (such as a base station) can broadcast the first indication information in the cell it covers.

[0138] In one implementation, the access network device (such as a base station) can determine the cells applicable to the store-and-forward operation mode in the cells it covers, and broadcast the first indication information in the determined cells applicable to the store-and-forward operation mode. The first indication information indicates at least one of the following: the first cell supports the store-and-forward operation mode; one or more cell identifiers in the store-and-forward operation mode; the cell where the terminal is located is in the store-and-forward operation mode; the cell where the terminal is located supports the store-and-forward operation mode; the terminal is in the store-and-forward operation mode; the terminal supports the store-and-forward operation mode; the store-and-forward operation mode is available. Or, the access network device (such as a base station) can determine the cells not applicable to the store-and-forward operation mode in the cells it covers, and broadcast the first indication information in the determined cells not applicable to the store-and-forward operation mode. The first indication information indicates at least one of the following: the first cell does not support the store-and-forward operation mode; one or more cell identifiers that do not support the store-and-forward operation mode; the cell where the terminal is located is not in the store-and-forward operation mode; the cell where the terminal is located does not support the store-and-forward operation mode; the terminal is not in the store-and-forward operation mode; the terminal does not support the store-and-forward operation mode; the store-and-forward operation mode is unavailable.

[0139] In one implementation, for an access network device (such as a base station) that does not support the store-and-forward operation mode or is not in the store-and-forward operation mode, the access network device may broadcast first indication information in the cell it covers. The first indication information indicates at least one of the following: the first cell does not support the store-and-forward operation mode; one or more cell identifiers of cells that do not support the store-and-forward operation mode; the cell where the terminal is located is not in the store-and-forward operation mode; the cell where the terminal is located does not support the store-and-forward operation mode; the terminal is not in the store-and-forward operation mode; the terminal does not support the store-and-forward operation mode; the store-and-forward operation mode is unavailable.

[0140] In one implementation, when the first indication information indicates at least one of the following, the terminal determines that it is in the store-and-forward operation mode:

[0141] The first cell supports the store-and-forward operation mode, where the first cell is the cell where the terminal is located;

[0142] One or more cells in the store-and-forward operation mode, where the one or more cells include the cell where the terminal is located; the cell where the terminal is located is in the store-and-forward operation mode;

[0143] The cell where the terminal is located supports the store-and-forward operation mode;

[0144] The terminal is in the store-and-forward operation mode;

[0145] The terminal supports the store-and-forward operation mode;

[0146] The store-and-forward operation mode is available.

[0147] In one implementation, when the first indication information indicates that the first cell supports the store-and-forward mode, if the terminal is in the first cell, the terminal determines that it is in the store-and-forward operation mode.

[0148] In one implementation, when the first indication information indicates one or more cells in the store-and-forward operation mode, if the terminal is in any one of the one or more cells, the terminal determines that it is in the store-and-forward operation mode.

[0149] In this implementation, the terminal determines whether it is in the store-and-forward operation mode based on the first indication information. When it is determined that it is in the store-and-forward operation mode, the NAS timer is not started; or, the NAS timer in the store-and-forward operation mode is set based on the first time value; or, the NAS timer in the store-and-forward operation mode is set based on the first information; thereby enabling specific settings for the NAS timer in the store-and-forward operation mode and reducing the probability of NAS process failure of the terminal.

[0150] Optionally, before the terminal determines whether it is in the store-and-forward operation mode based on the first indication information, the method further includes:

[0151] The terminal receives the first indication information sent by the access network device.

[0152] Optionally, the method further includes:

[0153] The terminal sends a first request message to the core network device;

[0154] The terminal receives a first response message sent by the core network device;

[0155] Wherein, when the first response message indicates that the core network device accepts the first request message, the first response message includes at least one of the following: the first indication information; the first information;

[0156] When the first response message indicates that the core network device rejects the first request message, the first response message includes at least one of the following: the first indication information; the first information; first rejection information;

[0157] Wherein, the first rejection information is used to indicate the reason for rejecting the first request message.

[0158] Wherein, the first request message may include at least one of the following: a registration request message, an attachment request message, a tracking area update request message, a service request message, a deregistration request message.

[0159] In one implementation, the first rejection information may include at least one of the following:

[0160] An indication information indicating that only the store-and-forward mode is supported or allowed.

[0161] An indication information for instructing the terminal to enter or enable the store-and-forward operation mode.

[0162] Wherein, the core network device may be an MME or an AMF, etc.

[0163] In one implementation, when the terminal determines that it has not received the first response message corresponding to the first request message, and the first request message includes second indication information, the terminal determines that it is in the store-and-forward operation mode;

[0164] Wherein, the second indication information is used to indicate that the terminal supports the store-and-forward operation mode or is used to indicate that the terminal supports store-and-forward service registration.

[0165] It should be noted that when the core network device receives the first request message sent by the terminal, the core network device may send the first indication information or the first information to the terminal. That is, the function of the core network device can be enhanced so that the core network device has the ability to send the first indication information or the first information to the terminal.

[0166] In one implementation, when the core network device is a core network device on a satellite, the first indication information may indicate at least one of the following: the cell where the terminal is located is in the store-and-forward operation mode; the cell where the terminal is located supports the store-and-forward operation mode; the terminal is in the store-and-forward operation mode; the terminal supports the store-and-forward operation mode; the store-and-forward operation mode is available; the core network device supports and accepts the store-and-forward operation mode. Alternatively, when the core network device is not a core network device on a satellite, the first indication information may indicate at least one of the following: the cell where the terminal is located is not in the store-and-forward operation mode; the cell where the terminal is located does not support the store-and-forward operation mode; the terminal is not in the store-and-forward operation mode; the terminal does not support the store-and-forward operation mode; the store-and-forward operation mode is not available; the core network device does not support or does not accept the store-and-forward operation mode.

[0167] In one implementation, for a core network device that does not support the store-and-forward operation mode or is not in the store-and-forward operation mode, when the core network device receives the first request message sent by the terminal, the core network device may send the first indication information to the terminal, and the first indication information indicates at least one of the following: the cell where the terminal is located is not in the store-and-forward operation mode; the cell where the terminal is located does not support the store-and-forward operation mode; the terminal is not in the store-and-forward operation mode; the terminal does not support the store-and-forward operation mode; the store-and-forward operation mode is not available; the core network device does not support or does not accept the store-and-forward operation mode.

[0168] In one implementation, the core network device receives the location information or network information of the terminal from the access network device, and the core network device may determine whether the location information of the terminal is the location information corresponding to the store-and-forward operation mode, or determine whether the network information of the terminal is the network information corresponding to the store-and-forward operation mode, that is, determine whether the location information or network information of the terminal is within the range applicable to the store-and-forward operation mode. When the core network device determines that the location information or network information of the terminal is within the range applicable to the store-and-forward operation mode, the core network device may send the first indication information to the terminal, and the first indication information may indicate at least one of the following: the cell where the terminal is located is in the store-and-forward operation mode; the cell where the terminal is located supports the store-and-forward operation mode; the terminal is in the store-and-forward operation mode; the terminal supports the store-and-forward operation mode; the store-and-forward operation mode is available.

[0169] In this embodiment, the terminal sends a first request message to the core network device, and the terminal receives a first response message sent by the core network device. Thus, the terminal can obtain the first indication information or the first information through the first response message, can determine whether it is in the store-and-forward operation mode based on the first indication information, or can set the NAS timer in the store-and-forward operation mode based on the first information.

[0170] Optionally, the method further includes:

[0171] The terminal sends a second request message to the core network device;

[0172] When the terminal determines that it has not received a second response message corresponding to the second request message and the second request message includes second indication information, the terminal determines that it is in the store-and-forward operation mode;

[0173] Wherein, the second indication information is used to indicate that the terminal supports the store-and-forward operation mode.

[0174] Wherein, the second request message may be the same as or different from the first request message.

[0175] In one embodiment, the second indication information is carried in at least one of the following:

[0176] Mobility management capability cell; System update type cell; Registration type cell; New cell.

[0177] In one embodiment, the mobility management capability cell may be a 5GMM capability cell.

[0178] In one embodiment, the system update type cell may be a 5GS update type cell.

[0179] In one embodiment, the registration type cell may be a 5GS registration type cell.

[0180] In this embodiment, in this way, the terminal can determine whether it is in the store-and-forward operation mode by sending a second request message to the core network device. When it is determined that it is in the store-and-forward operation mode, the NAS timer is not started; or, the NAS timer in the store-and-forward operation mode is set based on the first time value; or, the NAS timer in the store-and-forward operation mode is set based on the first information. Thus, the NAS timer in the store-and-forward operation mode can be specifically set, and the probability of NAS process failure of the terminal can be reduced.

[0181] Optionally, the first information includes at least one of the following:

[0182] Ephemeris information; satellite period; store-and-forward operation processing time; service link establishment delay; feedback link establishment delay.

[0183] Optionally, setting the first NAS timer based on the first information includes at least one of the following:

[0184] Setting the value of the first NAS timer based on the ephemeris information or the satellite period;

[0185] Setting the value of the first NAS timer based on the value of the third NAS timer and the store-and-forward operation processing time;

[0186] Setting the value of the first NAS timer based on the value of the third NAS timer and the service link establishment delay;

[0187] Setting the value of the first NAS timer based on the value of the third NAS timer and the feedback link establishment delay;

[0188] Wherein, the third NAS timer and the first NAS timer are different NAS timers.

[0189] Wherein, the third NAS timer can be an existing NAS timer. The third NAS timer can include a mobility management timer and a session management timer.

[0190] In one implementation, setting the value of the first NAS timer based on the value of the third NAS timer and the store-and-forward operation processing time may include setting the sum value of the value of the third NAS timer and the value of the store-and-forward operation processing time as the value of the first NAS timer; or, setting the value of the first NAS timer to be greater than the sum value of the value of the third NAS timer and the value of the store-and-forward operation processing time.

[0191] In one implementation, setting the value of the first NAS timer based on the value of the third NAS timer and the service link establishment delay may include: setting the sum value of the value of the third NAS timer and the value of the service link establishment delay as the value of the first NAS timer; or, setting the value of the first NAS timer to be greater than the sum value of the value of the third NAS timer and the value of the service link establishment delay.

[0192] In one implementation, setting the value of the first NAS timer based on the value of the third NAS timer and the feedback link establishment delay may include: setting the sum of the value of the third NAS timer and the value of the feedback link establishment delay as the value of the first NAS timer; or, setting the value of the first NAS timer to be greater than the sum of the value of the third NAS timer and the value of the feedback link establishment delay.

[0193] In this implementation, setting the value of the first NAS timer based on the ephemeris information or the satellite period can consider satellite-related information to set the NAS timer in the store-and-forward operation mode; or, setting the value of the first NAS timer based on the value of the third NAS timer and the store-and-forward operation processing time; or, setting the value of the first NAS timer based on the value of the third NAS timer and the service link establishment delay; or, setting the value of the first NAS timer based on the value of the third NAS timer and the feedback link establishment delay; thus, it is possible to consider various delays caused by NAS messages being relayed through satellites and perform specific settings on the NAS timer in the store-and-forward operation mode, which can reduce the probability of NAS process failure at the terminal.

[0194] Optionally, setting the value of the first NAS timer based on the first time value includes any one of the following:

[0195] Setting the value of the first NAS timer to an infinite value;

[0196] Setting the value of the first NAS timer to a pre-configured timer value;

[0197] Setting the value of the first NAS timer to a protocol-predefined timer value.

[0198] In this implementation, setting the value of the first NAS timer to an infinite value; or, setting the value of the first NAS timer to a pre-configured timer value; or, setting the value of the first NAS timer to a protocol-predefined timer value; in this way, by performing specific settings on the NAS timer in the store-and-forward operation mode, the probability of NAS process failure at the terminal can be reduced.

[0199] It should be noted that if the UE accesses the satellite access with S&F operator mode, the NAS message request of the UE needs to be relayed and forwarded by the satellite, and the service link becomes longer. If the traditional NAS timer (NAS timer at the second or minute level) is still used to ensure the sending and receiving of NAS signaling in the S&F operation mode, then the NAS process is very likely to fail. In the embodiment of the present application, the NAS timer is adjusted for the S&F operation mode, which can ensure the normal sending and receiving of NAS signaling.

[0200] Optionally, the method further includes:

[0201] The terminal sends the first information to the core network device.

[0202] In this embodiment, the terminal sends the first information to the core network device, so that the core network device can set the second NAS timer based on the first information. The second NAS timer is the NAS timer of the core network device in the store-and-forward operation mode, so as to be able to adjust the NAS timer of the core network device and ensure the normal sending and receiving of NAS signaling.

[0203] See Figure 4 , Figure 4 is a flowchart of a method for processing a NAS timer provided by an embodiment of the present application. As Figure 4 shown, the method for processing a NAS timer includes the following steps:

[0204] Step 201, in the store-and-forward operation mode, the core network device performs a second operation;

[0205] Wherein, the second operation includes any one of the following:

[0206] Do not start the second NAS timer;

[0207] Set the value of the second NAS timer based on the second time value;

[0208] Set the second NAS timer based on the first information;

[0209] Send the first information to the terminal;

[0210] Wherein, the first information is used to indicate store-and-forward operation assistance information, and the second time value is a time value for the store-and-forward operation mode.

[0211] Wherein, the second NAS timer is the NAS timer in the store-and-forward operation mode.

[0212] Among them, not starting the second NAS timer can be understood as that the core network device does not start the NAS timer in the store-and-forward operation mode.

[0213] In addition, the second time value can be a pre-configured timer value; or, a timer value predefined by the protocol.

[0214] In one implementation, the second time value is a time value dedicated to the store-and-forward operation mode.

[0215] It should be noted that the second NAS timer can be the NAS timer of the core network device in the store-and-forward operation mode, and this second NAS timer can be used for sending or receiving NAS messages between the core network device and the terminal.

[0216] In one implementation, the core network device (such as MME) sets the NAS timer for the store-and-forward operation mode.

[0217] Exemplarily, after determining that it is the store-and-forward operation mode, the core network device uses the pre-configured NAS timer value dedicated to the store-and-forward operation mode; Exemplarily, the core network device determines the NAS timer value for the store-and-forward operation mode according to the first indication information, the first information or the pre-configured information; Exemplarily, when determining that it is the store-and-forward operation mode, the core network device determines not to start the NAS timer or sets it to infinity.

[0218] In one implementation, the core network device obtains the first indication information or the first information, and sets the NAS timer according to the first indication information, the first information or the pre-configured information.

[0219] In one implementation, the core network device obtaining the first indication information or the first information includes at least one of the following:

[0220] The first indication information is carried in the NAS information of the terminal received by the core network device;

[0221] The core network device receives an NG setup request from the RAN, and the first indication information or the first information is carried in the NG setup request;

[0222] The core network device receives the first information from the NF.

[0223] In one implementation, the core network device setting the NAS timer according to the first indication information or the first information includes any one of the following:

[0224] Using the configured NAS timer for the store-and-forward operation mode;

[0225] Set a NAS timer for the store-and-forward operation mode according to the satellite operation period, including adding the satellite operation period to the original NAS timer value (value) when setting the NAS timer value;

[0226] The core network device sets a NAS timer applicable to the store-and-forward operation mode based on the implementation;

[0227] The core network device abandons the use of the NAS timer in the store-and-forward operation mode.

[0228] In an embodiment of the present application, in the store-and-forward operation mode, the core network device performs a second operation; wherein, the second operation includes any one of the following: not starting a second NAS timer; setting the value of the second NAS timer based on a second time value; setting the second NAS timer based on a first piece of information; sending the first piece of information to the terminal; in this way, in the store-and-forward operation mode, the core network device avoids using a general NAS timer and performs specific settings on the NAS timer in the store-and-forward operation mode, which can reduce the probability of NAS process failure between the terminal and the core network device.

[0229] Optionally, the method further includes:

[0230] The core network device sends a third request message to the network function entity, and the third request message is used to request the first piece of information;

[0231] The core network device receives the first piece of information sent by the network function entity.

[0232] Wherein, the third request message can be used to request information related to the store-and-forward operation mode. The network function entity can be a network function entity storing satellite information, and this network function entity can be an existing network element or a newly added network element. Exemplarily, this network function entity can be an AF.

[0233] In one implementation, the third request message can carry third indication information, and the third indication information is indication information of the store-and-forward operation mode; or, the third request message can carry an identifier of the store-and-forward operation mode.

[0234] In this implementation, the core network device sends a third request message to the network function entity; the core network device receives the first piece of information sent by the network function entity. Thus, the core network device can obtain the first piece of information through the third request message, and further can set the NAS timer in the store-and-forward operation mode based on the first piece of information or send the first piece of information to the terminal.

[0235] Optionally, before setting the second NAS timer based on the first information, the method further includes at least one of the following:

[0236] The core network device receives the first information from the access network device;

[0237] The core network device obtains the pre-configured first information;

[0238] The core network device receives the first information from the terminal.

[0239] In one implementation, the core network device receives the first information sent by the access network device (such as a base station), and the first information may be included in an NGAP message.

[0240] In one implementation, the core network device receives the first information from the terminal, and the first information is determined by the terminal. Exemplarily, the terminal may obtain the first information from the access network device (such as a base station) and send the first information to the core network device.

[0241] In this implementation, the core network device receives the first information from the access network device; or the core network device obtains the pre-configured first information; or the core network device receives the first information from the terminal; so that the core network device can set the NAS timer in the store-and-forward operation mode based on the obtained first information or send the first information to the terminal.

[0242] Optionally, before the core network device performs the second operation, the method further includes:

[0243] The core network device determines whether the terminal or the core network device is in the store-and-forward operation mode based on at least one of the following:

[0244] Pre-configured information;

[0245] The received second indication information from the terminal, where the second indication information is used to indicate that the terminal supports the store-and-forward operation mode;

[0246] The received radio access technology (RAT) type information from the access network device.

[0247] Among them, the pre-configuration information can be used to indicate the scope applicable to the store-and-forward operation mode, including but not limited to: geographical location or regional location, network information. The geographical location or regional location can be characterized by geolocation, TAI or cell ID. The network information can be characterized by PLMN ID or SNPN ID. The core network device can determine whether the geographical location or regional location or network information of the terminal is within the scope applicable to the store-and-forward operation mode, so as to determine whether the terminal or the core network device is in the store-and-forward operation mode. Exemplarily, the pre-configuration information can be used to indicate the cell ID of the cell applicable to the store-and-forward operation mode. When the cell ID of the cell to which the terminal belongs is among the cell IDs of the cells applicable to the store-and-forward operation mode, the core network device determines that the terminal or the core network device is in the store-and-forward operation mode.

[0248] Optionally, the UE provides the pre-configuration information to the lower layer.

[0249] In one implementation, when the second indication information indicates that the terminal supports the store-and-forward operation mode, the core network device determines that the terminal or the core network device is in the store-and-forward operation mode.

[0250] In one implementation, when the RAT type information sent by the access network device indicates the SF RAT type, the core network device determines that the terminal or the core network device is in the store-and-forward operation mode. The SF RAT type refers to the store-and-forward RAT type.

[0251] In one implementation, the second indication information is carried in at least one of the following:

[0252] Mobility management capability cell; System update type cell; Registration type cell; Newly added cell.

[0253] In one implementation, the mobility management capability cell can be a 5GMM capability cell.

[0254] In one implementation, the system update type cell can be a 5GS update type cell.

[0255] In one implementation, the registration type cell can be a 5GS registration type cell.

[0256] In this embodiment, the core network device determines whether the terminal or the core network device is in the store-and-forward operation mode based on at least one of the following: pre-configured information; second indication information received from the terminal, where the second indication information is used to indicate that the terminal supports the store-and-forward operation mode; radio access technology (RAT) type information received from the access network device. Therefore, in the store-and-forward operation mode, the core network device can avoid using a general NAS timer and perform specific settings on the NAS timer in the store-and-forward operation mode, which can reduce the probability of NAS process failure between the terminal and the core network device.

[0257] Optionally, the pre-configured information is used to indicate at least one of the following:

[0258] Location information corresponding to the store-and-forward operation mode; network information corresponding to the store-and-forward operation mode.

[0259] It should be noted that for the pre-configured information, reference can be made to the relevant descriptions of the embodiments shown in Figure 3 To avoid repeated description, it will not be elaborated here.

[0260] Optionally, before the core network device performs the second operation in the store-and-forward operation mode, the method further includes:

[0261] The core network device determines whether the terminal or the core network device is in the store-and-forward operation mode based on the first indication information;

[0262] The first indication information is used to indicate at least one of the following:

[0263] Whether the first cell supports the store-and-forward operation mode;

[0264] One or more cells in the store-and-forward operation mode;

[0265] Whether the cell where the terminal is located is in the store-and-forward operation mode;

[0266] Whether the cell where the terminal is located supports the store-and-forward operation mode;

[0267] Whether the terminal is in the store-and-forward operation mode;

[0268] Whether the terminal supports the store-and-forward operation mode;

[0269] Whether the store-and-forward operation mode is available.

[0270] Among them, the core network device can obtain the first indication information from an access network device (such as a base station), and the first indication information can be included in an NG Application Protocol (NGAP) message. NG refers to new generation.

[0271] In one implementation, when the first indication information indicates at least one of the following, the core network device determines that the terminal or the core network device is in the store-and-forward operation mode:

[0272] The cell where the terminal is located is in the store-and-forward operation mode;

[0273] The cell where the terminal is located supports the store-and-forward operation mode;

[0274] The terminal is in the store-and-forward operation mode;

[0275] The terminal supports the store-and-forward operation mode.

[0276] In this implementation, the core network device determines whether the terminal or the core network device is in the store-and-forward operation mode based on the first indication information, so as to be able to perform specific settings on the NAS timer in the store-and-forward operation mode, and can reduce the probability of NAS procedure failure between the terminal and the core network device.

[0277] Optionally, the method further includes:

[0278] The core network device receives a first request message sent by the terminal;

[0279] The core network device sends a first response message to the terminal;

[0280] Among them, when the first response message indicates that the core network device accepts the first request message, the first response message includes at least one of the following: the first indication information; the first information;

[0281] When the first response message indicates that the core network device rejects the first request message, the first response message includes at least one of the following: the first indication information; the first information; the first rejection information;

[0282] Among them, the first rejection information is used to indicate the reason for rejecting the first request message.

[0283] It should be noted that for the first request message and the first response message, reference can be made to the relevant description of the embodiments shown in Figure 3 For the sake of avoiding repeated description, it will not be elaborated here.

[0284] Optionally, the first information includes at least one of the following:

[0285] Ephemeris information; satellite period; store-and-forward operation processing time; service link establishment delay; feedback link establishment delay.

[0286] Optionally, setting the second NAS timer based on the first information includes at least one of the following:

[0287] Setting the value of the second NAS timer based on the ephemeris information or the satellite period;

[0288] Setting the value of the second NAS timer based on the value of the fourth NAS timer and the store-and-forward operation processing time;

[0289] Setting the value of the second NAS timer based on the value of the fourth NAS timer and the service link establishment delay;

[0290] Setting the value of the second NAS timer based on the value of the fourth NAS timer and the feedback link establishment delay;

[0291] Wherein, the fourth NAS timer and the second NAS timer are different NAS timers.

[0292] Wherein, the fourth NAS timer can be an existing NAS timer. The fourth NAS timer can include a mobility management timer and a session management timer.

[0293] In one implementation, setting the value of the second NAS timer based on the value of the fourth NAS timer and the store-and-forward operation processing time may include setting the sum value of the value of the fourth NAS timer and the value of the store-and-forward operation processing time as the value of the second NAS timer; or, setting the value of the second NAS timer to be greater than the sum value of the value of the fourth NAS timer and the value of the store-and-forward operation processing time.

[0294] In one implementation, setting the value of the second NAS timer based on the value of the fourth NAS timer and the service link establishment delay may include: setting the sum value of the value of the fourth NAS timer and the value of the service link establishment delay as the value of the second NAS timer; or, setting the value of the second NAS timer to be greater than the sum value of the value of the fourth NAS timer and the value of the service link establishment delay.

[0295] In one implementation, setting the value of the second NAS timer based on the value of the fourth NAS timer and the feedback link establishment delay may include: setting the sum of the value of the fourth NAS timer and the value of the feedback link establishment delay as the value of the second NAS timer; or, setting the value of the second NAS timer to be greater than the sum of the value of the fourth NAS timer and the value of the feedback link establishment delay.

[0296] In this implementation, setting the value of the second NAS timer based on the ephemeris information or the satellite period can consider satellite-related information to set the NAS timer in the store-and-forward operation mode; or, setting the value of the second NAS timer based on the value of the fourth NAS timer and the store-and-forward operation processing time; or, setting the value of the second NAS timer based on the value of the fourth NAS timer and the service link establishment delay; or, setting the value of the second NAS timer based on the value of the fourth NAS timer and the feedback link establishment delay; thus, it can consider various delays caused by NAS messages relayed through satellites and perform specific settings on the NAS timer in the store-and-forward operation mode, which can reduce the probability of NAS process failure between the terminal and the core network device.

[0297] Optionally, setting the value of the second NAS timer based on the second time value includes any of the following:

[0298] Setting the value of the second NAS timer to an infinite value;

[0299] Setting the value of the second NAS timer to a pre-configured timer value;

[0300] Setting the value of the second NAS timer to a protocol-predefined timer value;

[0301] Setting the sum of the value of the fourth NAS timer and the second time value as the value of the second NAS timer, where the fourth NAS timer and the second NAS timer are different NAS timers, and the second time value is a pre-configured time value.

[0302] In this implementation, setting the value of the second NAS timer to an infinite value; or setting the value of the second NAS timer to a pre-configured timer value; or setting the value of the second NAS timer to a protocol-predefined timer value; or setting the sum of the value of the fourth NAS timer and the second time value as the value of the second NAS timer; in this way, by performing specific settings on the NAS timer in the store-and-forward operation mode, the probability of NAS process failure between the terminal and the core network device can be reduced.

[0303] It should be noted that this embodiment is used as Figure 3The implementation manner of the corresponding core network device in the illustrated embodiment, for its specific implementation manner, reference may be made to Figure 3 the relevant description of the illustrated embodiment. To avoid repeated description, it will not be elaborated in this embodiment.

[0304] The embodiment of the present application further provides a method for processing NAS timers, including:

[0305] The access network device sends first indication information to the terminal;

[0306] Wherein, the first indication information is used to indicate at least one of the following:

[0307] Whether the first cell supports the store-and-forward operation mode;

[0308] One or more cells in the store-and-forward operation mode;

[0309] Whether the cell where the terminal is located is in the store-and-forward operation mode;

[0310] Whether the cell where the terminal is located supports the store-and-forward operation mode;

[0311] Whether the terminal is in the store-and-forward operation mode;

[0312] Whether the terminal supports the store-and-forward operation mode;

[0313] Whether the store-and-forward operation mode is available.

[0314] It should be noted that this embodiment, as Figure 3 or Figure 4 the implementation manner of the corresponding access network device in the illustrated embodiment, for its specific implementation manner, reference may be made to Figure 3 or Figure 4 the relevant description of the illustrated embodiment. To avoid repeated description, it will not be elaborated in this embodiment.

[0315] The following uses several specific embodiments to illustrate the method for processing NAS timers provided by the embodiment of the present application:

[0316] In the following embodiment, the core network device is taken as the MME for illustration.

[0317] Embodiment 1:

[0318] In this embodiment, the terminal (UE) sets the NAS timer (i.e., the first NAS timer) for the S&F operation mode (i.e., the store-and-forward operation mode).

[0319] In this embodiment, the NAS timer refers to the NAS timer maintained by the UE side, including existing and future newly added mobility management NAS timers and session management NAS timers, and including NAS timers in EPS and 5GS.

[0320] Embodiment 1

[0321] In this embodiment, as Figure 5 shown, the UE uses the pre-configured NAS timer value dedicated to the S&F operation mode, including the following process:

[0322] (1) The UE obtains first indication information from the base station, and the first indication information is used to indicate being in or supporting the S&F operation mode, or the cell being in or supporting the S&F operation mode. This first indication information may be an S&F operation mode indication.

[0323] The first indication information is included in a broadcast message or an RRC message. For example, the broadcast message may be SIB31 (System Information Block Type 31) or SIB32; the RRC message may be an RRC connection reconfiguration message or an RRC connection establishment message.

[0324] If the UE can obtain the first indication information from the base station, it can skip steps (2)-(3) and directly execute step (4).

[0325] The UE can obtain the first indication information from the lower layer.

[0326] (2) The UE sends a first message to the MME, and the first message includes at least one of the following: a registration request message, an attachment request message, a tracking area update request message, a service request message, a deregistration request message.

[0327] Optionally, the first message includes a first bit (i.e., second indication information), and the first bit is used to indicate whether the UE supports the S&F operation mode. The first bit may be included in a 5GMM capability cell, a 5GS update type cell, a 5GS registration type cell, or a newly added cell.

[0328] (3) The UE learns from the MME that it is in the S&F operation mode, including the following three cases:

[0329] The first case: The MME sends a first message rejection message to the UE, and the rejection message includes at least one of the following: first indication information, first information, first rejection value (i.e., first rejection information). The first rejection value is used to indicate that only the S&F operation mode can be executed. At this time, when the UE sends the first message, the S&F operation mode has been used, and the first message may be a communication message between the UE and the visited network.

[0330] The first information may be store-and-forward operation assistance information, and the first information includes at least one of the following: ephemeris information, satellite period, S&F operation processing time, service link establishment delay, feedback link establishment delay. The satellite coverage time of a specific location can be determined through the ephemeris information.

[0331] The second case: The MME sends a first message acceptance message to the UE, and the acceptance message includes at least one of the following: first indication information, first information. At this time, when the UE sends the first message, the S&F operation mode has not been used, and the first message may be a communication message between the UE and the home network.

[0332] The third case: The UE does not receive a response message to the first message, that is, the NAStimer associated with the first message times out, and the first message includes a first bit, then the UE determines that it is in the S&F operation mode.

[0333] Optionally, the UE determines that it is in the S&F operation mode according to pre-configured information, and the pre-configured information indicates the scope applicable to the S&F operation mode, including but not limited to: geographical location or regional location, network information. The geographical location or regional location can be characterized by geolocation, TAI or cell ID. The network information can be characterized by PLMN ID or SNPN ID.

[0334] (4) The UE sets the NAS timer according to the first indication information, including the following two methods:

[0335] Method 1: The UE determines that it is in the S&F operation mode according to the first indication information, and the UE uses a pre-configured NAS timer value dedicated to the S&F operation mode. Specifically, a mobility management timer or a session management NAS timer for the S&F operation mode can be added to the protocol. For example:

[0336] Table 1: EPS session management timers

[0337]

[0338] Method 2: The UE determines that it is in the S&F operation mode according to the first indication information, and the UE adds a first time value to the existing NAS timer as the NAS timer for the S&F operation mode. The first time value can be configured by the operator, pre-configured in the Universal Subscriber Identity Module (USIM) / Mobile Equipment (ME), or determined depending on the UE implementation.

[0339] The UE obtains the first indication information from the lower layer or the UE obtains the S&F operation mode indication from the lower layer.

[0340] Embodiment 2

[0341] It should be noted that the embodiments of the present application can be applied to different network systems, such as 4GS and 5GS. In different network systems, the base station and the core network node are different. In 4GS, the base station and the core network node are eNB and MME respectively, and in 5GS, the base station and the core network node are gNB and AMF respectively. In this embodiment, the core network node is described by taking MME as an example.

[0342] In this embodiment, as Figure 6 shown, the UE determines the NAS timer value of the S&F operation mode according to the first indication information and the first information received from the network side, including the following process:

[0343] (1) Optionally, the UE obtains the first indication information and the first information from the base station.

[0344] The first indication information can be used to indicate that the UE is in or supports the S&F operation mode, or the cell is in or supports the S&F operation mode;

[0345] The first information may be store-and-forward operation assistance information, and the first information includes at least one of the following: ephemeris information, satellite period, S&F operation processing time, service link establishment delay, feedback link establishment delay. The ephemeris information can be used to determine the satellite coverage time at a specific location.

[0346] The first indication information and the first information are included in a broadcast message or an RRC message. For example, the broadcast message can be SIB31 (System Information Block Type 31) or SIB32; the RRC message can be an RRC connection reconfiguration message or an RRC connection establishment message.

[0347] If the UE can obtain the first information from the base station, it can skip steps (2)-(5) and directly execute step (6).

[0348] The UE can obtain the first indication information and the first information from the lower layer.

[0349] (2) The UE sends a first message to the MME. The first message includes at least one of the following: a registration request message, an attachment request message, a tracking area update request message, a service request message, a deregistration request message.

[0350] Optionally, the first message includes a first bit, and the first bit is used to indicate whether the UE supports the S&F operation mode. The first bit can be included in a 5GMM capability cell, a 5GS update type cell, or a newly added cell.

[0351] (3) Optionally, the MME requests S&F operation mode-related information from the NF, and the S&F operation mode indication is carried in the request message.

[0352] The MME determines the S&F operation mode indication according to the first bit received from the UE or the network operation mode. The network operation mode may include a satellite-based non-terrestrial communication network or a terrestrial communication network.

[0353] The NF may be a network function entity storing satellite information, and the network function entity may be an existing network element or a newly added network element.

[0354] (4) Optionally, the NF determines the first information and sends it to the MME.

[0355] To determine the first piece of information, the NF can obtain ephemeris information from the RAN or a functional entity storing satellite information. For example, the functional entity can be a non-3GPP organization or QAM.

[0356] (5) The MME sends the first indication information and the first piece of information to the UE, including the following two cases:

[0357] The first case: The MME sends a first message rejection message to the UE. The rejection message includes at least one of the following: the first indication information, the first piece of information, and the first rejection value. The first rejection value is used to indicate that only the S&F operation mode can be executed.

[0358] The second case: The MME sends a first message acceptance message to the UE. The acceptance message includes at least one of the following: the first indication information, the first piece of information. At this time, the S&F operation mode has not been used when the UE sends the first message, and the first message may be a communication message between the UE and the home network.

[0359] (6) The UE sets the NAS timer according to the first indication information and the first piece of information, including:

[0360] The UE determines that it is in the S&F operation mode according to the first indication information;

[0361] The UE sets the NAS timer according to the first piece of information, including: The UE sets an appropriate NAS timer for the S&F operation mode according to the ephemeris information or the satellite period, or the UE adds the S&F operation processing time, the service link establishment delay, or the feedback link establishment delay to the existing NAS timer as the NAS timer for the S&F operation mode.

[0362] Embodiment 3

[0363] In this embodiment, when the UE determines that it is in the S&F operation mode, the UE determines not to start the NAS timer or sets it to infinity.

[0364] The UE determines that it is in the S&F operation mode according to the first indication information (the method of obtaining the first indication information is the same as that in Embodiment 1 or Embodiment 2) or pre-configured information; when the UE performs a NAS procedure, it does not use the NAS timer mechanism, including: when the UE sends a NAS message, it does not start the NAS timer, or when the UE sends a NAS message, it sets the NAS timer to a larger value or an infinite value.

[0365] Embodiment 2:

[0366] In this embodiment, the MME sets the NAS timer (i.e., the second NAS timer) for the S&F operation mode.

[0367] The MME can determine that the UE is in the S&F operation mode based on pre-configured information, or the SF RAT type notified by the RAN, or the S&F registration indication information of the UE. When the MME sets the NAS timer, it includes: determining the NAS timer based on the pre-configured satellite cycle (more applicable to the scenario where the MME is on the satellite); or, determining the NAS timer based on the satellite cycle provided by the RAN during the NG setup process.

[0368] Embodiment 1

[0369] In this embodiment, as Figure 7 shown, the MME uses the NAS timer value pre-configured for the S&F operation mode, including the following process:

[0370] (1) The MME obtains the first indication information from the base station (such as the RAN), and the first indication information is used to indicate that it is in or supports the S&F operation mode or the cell is in or supports the S&F operation mode;

[0371] The first indication information is included in the NGAP message.

[0372] If the MME can obtain the first indication information from the base station, it can skip steps (2)-(3) and directly execute step (4).

[0373] (2) The UE sends a first message to the MME, and the first message includes at least one of the following: a registration request message, an attachment request message, a tracking area update request message, a service request message, and a deregistration request message.

[0374] Optionally, the first message includes a first bit, which is used to indicate whether the UE supports the S&F operation mode. The first bit may be included in the 5GMM capability cell, the 5GS update type cell, the 5GS registration type cell, or a newly added cell.

[0375] (3) The MME determines that it is in the S&F operation mode and sets the NAS timer, including the following three cases:

[0376] The first case: The MME determines that it is in the S&F operation mode according to at least one of the following: pre-configured information, the first bit received from the UE, the SF RAT type received from the base station;

[0377] The pre-configured information indicates the scope to which the S&F operation mode applies, including but not limited to: geographical location or regional location, network information. The geographical location or regional location can be characterized by geolocation, TAI, or cell ID. The network information can be characterized by PLMN ID or SNPN ID.

[0378] The second case: After determining that it is in the S&F operation mode, the MME sets the NAS timer, including the following two methods:

[0379] Method 1: The MME uses the NAS timer value pre-configured specifically for the S&F operation mode. Specifically, mobility management timers or session management NAS timers for the S&F operation mode can be added to the protocol.

[0380] Method 2: The MME adds a second time value to the existing NAS timer as the NAS timer for the S&F operation mode. The second time value can be configured by the operator, pre-configured in the MME, or determined depending on the MME implementation.

[0381] Embodiment 2

[0382] In this embodiment, as Figure 8As shown, the MME determines the NAS timer value for the S&F operation mode based on the first indication information, the first information, or pre-configured information; or the MME receives the satellite period provided by the RAN during the NG setup process and sets the NAS timer value; or the MME determines the NAS timer based on the pre-configured ephemeris period information, including the following processes:

[0383] (1) Optionally, the MME obtains the first indication information and the first information from the base station.

[0384] The first indication information is used to indicate being in or supporting the S&F operation mode, or the cell being in or supporting the S&F operation mode;

[0385] The first information may be store-and-forward operation assistance information, which includes at least one of the following: ephemeris information, satellite period, S&F operation processing time, service link establishment delay, feedback link establishment delay. The satellite coverage time at a specific location can be determined through the ephemeris information.

[0386] The first indication information and the first information are included in the NGAP message.

[0387] (2) The UE sends a first message to the MME, and the first message includes at least one of the following: registration request message, attachment request message, tracking area update request message, service request message, deregistration request message.

[0388] Optionally, the first message includes a first bit, which is used to indicate whether the UE supports the S&F operation mode. The first bit can be included in the 5GMM capability cell, 5GS update type cell, 5GS registration type cell, or a newly added cell.

[0389] Optionally, the first message includes a second information, which is used to indicate the store-and-forward operation assistance information determined or pre-configured on the UE side.

[0390] (3) Optionally, the MME requests S&F operation mode-related information from the NF, and the S&F operation mode indication is carried in the request message.

[0391] The MME determines the S&F operation mode indication based on the first bit received from the UE or the network operation mode. The network operation mode may include a satellite-based non-terrestrial communication network or a terrestrial communication network.

[0392] The NF is a network function entity that can store satellite information, and this network function entity can be an existing network element or a newly added network element.

[0393] (4) Optionally, the NF determines the first information and sends it to the MME;

[0394] To determine the first information, the NF can obtain ephemeris information from the RAN or a function entity that stores satellite information. Exemplarily, this function entity can be a non-3GPP organization or QAM.

[0395] (5) The MME determines that it is in the S&F operation mode and sets the NAS timer, including the following two cases:

[0396] The first case: The MME determines that it is in the S&F operation mode according to the first indication information or pre-configured information; this first indication information can be received from the base station or pre-configured in the MME.

[0397] The second case: The MME sets the NAS timer according to the received first information, pre-configured first information, or received second information, including: The MME sets an appropriate NAS timer for the S&F operation mode according to the ephemeris information or satellite period, or the MME adds the S&F operation processing time, service link establishment delay, or feedback link establishment delay to the existing NAS timer as the NAS timer for the S&F operation mode.

[0398] In addition to the NAS timers maintained by the UE side and the MME side respectively, there are some other parameters that can be determined by the MME and sent to the UE. These parameters may also be affected by the S&F operation mode. The MME can set at least one of the following based on the received first information, pre-configured first information, or received second information: negotiated extended discontinuous reception (DRX) parameters, mobile-initiated connection only (MICO) mode configuration, extended connected time (sent to the RAN for use), and some timers that need to be emphasized (such as T3324, the periodic registration update timer (T3512), the mobile reachable timer, and the implicit de-registration timer).

[0399] (6) The MME sends the first indication information and the first information to the UE, including the following two cases:

[0400] The first case: The MME sends a first message reject message to the UE, and the reject message includes at least one of the following: first indication information, first information, and a first reject value. The first reject value is used to indicate that only the S&F operation mode can be executed.

[0401] The second case: The MME sends a first message accept message to the UE, and the accept message includes at least one of the following: first indication information, first information. At this time, the S&F operation mode has not been used when the UE sends the first message, and the first message may be a communication message between the UE and the home network.

[0402] Furthermore, the first indication information is included in the 5GS network feature support cell or a newly added cell.

[0403] Embodiment 3

[0404] In this embodiment, when the MME determines that it is the S&F operation mode, the MME determines not to start the NAS timer or sets it to infinity.

[0405] The MME determines that it is in the S&F operation mode according to the first indication information (the method for obtaining the first indication information is the same as that in Embodiment 1 or Embodiment 2) or pre-configured information; when the MME executes the NAS procedure, it does not use the NAS timer mechanism, including: when the MME sends a NAS message, it does not start the NAS timer, or when the MME sends a NAS message, it sets the NAS timer to a relatively large value or an infinite value.

[0406] The above embodiments can be applied to LTE and NR.

[0407] Through the embodiments of the present application, when the UE uses the S&F operation mode, the normal sending and receiving of NAS signaling can be guaranteed.

[0408] For the NAS timer processing method provided by the embodiments of the present application, the execution subject can be a NAS timer processing device. In the embodiments of the present application, taking the NAS timer processing device executing the NAS timer processing method as an example, the NAS timer processing device provided by the embodiments of the present application is described.

[0409] Please refer to Figure 9 , Figure 9 which is a structural diagram of a NAS timer processing device provided by the embodiments of the present application. The terminal includes the NAS timer processing device. As Figure 9 shown, the NAS timer processing device 300 includes:

[0410] An execution module 301, configured to execute a first operation in the store-and-forward operation mode;

[0411] Wherein, the first operation includes any one of the following:

[0412] Do not start the first non-access stratum NAS timer;

[0413] Set the value of the first NAS timer based on a first time value, where the first time value is a time value for the store-and-forward operation mode;

[0414] Set the first NAS timer based on first information, where the first information is used to indicate store-and-forward operation assistance information.

[0415] Optionally, the device further includes:

[0416] A first determination module, configured to determine whether it is in the store-and-forward operation mode according to pre-configured information.

[0417] Optionally, the pre-configured information is used to indicate at least one of the following:

[0418] The location information corresponding to the store-and-forward operation mode; the network information corresponding to the store-and-forward operation mode.

[0419] Optionally, the first determination module is specifically configured to perform at least one of the following:

[0420] Determine whether it is in the store-and-forward operation mode based on whether the location information of the terminal matches the location information corresponding to the store-and-forward operation mode;

[0421] Determine whether it is in the store-and-forward operation mode based on whether the selected network information matches the network information corresponding to the store-and-forward operation mode.

[0422] Optionally, before the terminal performs the first operation in the store-and-forward operation mode, the device further includes:

[0423] A second determination module, configured to determine whether it is in the store-and-forward operation mode based on the first indication information;

[0424] The first indication information is used to indicate at least one of the following:

[0425] Whether the first cell supports the store-and-forward operation mode;

[0426] One or more cells in the store-and-forward operation mode;

[0427] Whether the cell where the terminal is located is in the store-and-forward operation mode;

[0428] Whether the cell where the terminal is located supports the store-and-forward operation mode;

[0429] Whether the terminal is in the store-and-forward operation mode;

[0430] Whether the terminal supports the store-and-forward operation mode;

[0431] Whether the store-and-forward operation mode is available.

[0432] Optionally, the device further includes:

[0433] A first receiving module, configured to receive the first indication information sent by the access network device.

[0434] Optionally, the device further includes:

[0435] A first sending module, configured to send a first request message to the core network device;

[0436] A second receiving module, configured to receive the first response message sent by the core network device;

[0437] Wherein, when the first response message indicates that the core network device accepts the first request message, the first response message includes at least one of the following: the first indication information; the first information;

[0438] When the first response message indicates that the core network device rejects the first request message, the first response message includes at least one of the following: the first indication information; the first information; first rejection information;

[0439] Wherein, the first rejection information is used to indicate the reason for rejecting the first request message.

[0440] Optionally, the device further includes:

[0441] A second sending module, configured to send a second request message to the core network device;

[0442] A third determining module, configured to determine that the device is in the store-and-forward operation mode when the terminal determines that it has not received a second response message corresponding to the second request message, and the second request message includes second indication information;

[0443] Wherein, the second indication information is used to indicate that the terminal supports the store-and-forward operation mode.

[0444] Optionally, the first information includes at least one of the following:

[0445] Ephemeris information; satellite period; store-and-forward operation processing time; service link establishment delay; feedback link establishment delay.

[0446] Optionally, setting the first NAS timer based on the first information includes at least one of the following:

[0447] Setting the value of the first NAS timer based on the ephemeris information or the satellite period;

[0448] Setting the value of the first NAS timer based on the value of the third NAS timer and the store-and-forward operation processing time;

[0449] Setting the value of the first NAS timer based on the value of the third NAS timer and the service link establishment delay;

[0450] Setting the value of the first NAS timer based on the value of the third NAS timer and the feedback link establishment delay;

[0451] Wherein, the third NAS timer and the first NAS timer are different NAS timers.

[0452] Optionally, setting the value of the first NAS timer based on the first time value includes any one of the following:

[0453] Set the value of the first NAS timer to an infinite value;

[0454] Set the value of the first NAS timer to a preconfigured timer value;

[0455] Set the value of the first NAS timer to a protocol-predefined timer value.

[0456] Optionally, the device further includes:

[0457] A third sending module, configured to send the first information to a core network device.

[0458] The NAS timer processing device in the embodiments of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal or other devices other than a terminal. Exemplarily, the terminal may include, but is not limited to, the types of the terminal 11 listed above, and other devices may be a server, a Network Attached Storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0459] The NAS timer processing device provided in the embodiments of the present application can implement Figure 3 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein again.

[0460] Please refer to Figure 10 , Figure 10 is a structural diagram of a NAS timer processing device provided in an embodiment of the present application. The core network device includes the NAS timer processing device. As Figure 10 shown, the NAS timer processing device 400 includes:

[0461] An execution module 401, configured to execute a second operation in a store-and-forward operation mode;

[0462] Wherein, the second operation includes any one of the following:

[0463] Do not start a second NAS timer;

[0464] Set the value of the second NAS timer based on a second time value;

[0465] Set the second NAS timer based on the first information;

[0466] Send the first information to a terminal;

[0467] Among them, the first information is used to indicate the store-and-forward operation assistance information, and the second time value is the time value for the store-and-forward operation mode.

[0468] Optionally, the device further includes:

[0469] A sending module, configured to send a third request message to a network function entity, where the third request message is used to request the first information;

[0470] A first receiving module, configured to receive the first information sent by the network function entity.

[0471] Optionally, before setting the second NAS timer based on the first information, the device further includes an obtaining module, configured to perform at least one of the following:

[0472] Receive the first information from an access network device;

[0473] Obtain the pre-configured first information;

[0474] Receive the first information from a terminal.

[0475] Optionally, the device further includes:

[0476] A first determining module, configured to determine whether the terminal or the core network device is in the store-and-forward operation mode based on at least one of the following:

[0477] Pre-configured information;

[0478] The received second indication information from the terminal, where the second indication information is used to indicate that the terminal supports the store-and-forward operation mode;

[0479] The received radio access technology (RAT) type information from an access network device.

[0480] Optionally, the pre-configured information is used to indicate at least one of the following:

[0481] The location information corresponding to the store-and-forward operation mode; the network information corresponding to the store-and-forward operation mode.

[0482] Optionally, before the core network device performs a second operation in the store-and-forward operation mode, the device further includes:

[0483] A second determining module, configured to determine whether the terminal or the core network device is in the store-and-forward operation mode based on the first indication information;

[0484] The first indication information is used to indicate at least one of the following:

[0485] Whether the first cell supports the store-and-forward operation mode;

[0486] One or more cells in the store-and-forward operation mode;

[0487] Whether the cell where the terminal is located is in the store-and-forward operation mode;

[0488] Whether the cell where the terminal is located supports the store-and-forward operation mode;

[0489] Whether the terminal is in the store-and-forward operation mode;

[0490] Whether the terminal supports the store-and-forward operation mode;

[0491] Whether the store-and-forward operation mode is available.

[0492] Optionally, the device further includes:

[0493] A receiving module, configured to receive a first request message sent by a terminal;

[0494] A sending module, configured to send a first response message to the terminal;

[0495] Wherein, when the first response message indicates that the core network device accepts the first request message, the first response message includes at least one of the following: the first indication information; the first information;

[0496] When the first response message indicates that the core network device rejects the first request message, the first response message includes at least one of the following: the first indication information; the first information; the first rejection information;

[0497] Wherein, the first rejection information is used to indicate the reason for rejecting the first request message.

[0498] Optionally, the first information includes at least one of the following:

[0499] Ephemeris information; satellite period; store-and-forward operation processing time; service link establishment delay; feedback link establishment delay.

[0500] Optionally, setting the second NAS timer based on the first information includes at least one of the following:

[0501] Setting the value of the second NAS timer based on the ephemeris information or the satellite period;

[0502] Setting the value of the second NAS timer based on the value of the fourth NAS timer and the store-and-forward operation processing time;

[0503] Set the value of the second NAS timer based on the value of the fourth NAS timer and the service link establishment delay;

[0504] Set the value of the second NAS timer based on the value of the fourth NAS timer and the feedback link establishment delay;

[0505] Wherein, the fourth NAS timer and the second NAS timer are different NAS timers.

[0506] Optionally, setting the value of the second NAS timer based on the second time value includes any one of the following:

[0507] Set the value of the second NAS timer to an infinite value;

[0508] Set the value of the second NAS timer to a pre-configured timer value;

[0509] Set the value of the second NAS timer to a protocol-predefined timer value;

[0510] Set the sum value of the value of the fourth NAS timer and the second time value as the value of the second NAS timer, the fourth NAS timer and the second NAS timer are different NAS timers, and the second time value is a pre-configured time value.

[0511] The NAS timer processing device in the embodiments of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal or other devices other than the terminal. Exemplarily, the terminal may include, but is not limited to, the types of the above-listed terminal 11, and other devices may be a server, a Network Attached Storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0512] The NAS timer processing device provided by the embodiments of the present application can implement Figure 4 each process implemented by the method embodiments and achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0513] Optionally, as Figure 11As shown in the figure, an embodiment of the present application further provides a communication device 500, which includes a processor 501 and a memory 502. A program or instruction that can run on the processor 501 is stored on the memory 502. For example, when the communication device 500 is a terminal, when the program or instruction is executed by the processor 501, each step of the above-mentioned NAS timer processing method embodiment applied to the terminal is implemented, and the same technical effect can be achieved. To avoid repetition, details are not described herein again. When the communication device 500 is a network-side device, when the program or instruction is executed by the processor 501, each step of the above-mentioned NAS timer processing method embodiment applied to the network-side device is implemented, and the same technical effect can be achieved. To avoid repetition, details are not described herein again.

[0514] An embodiment of the present application further provides a terminal, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instruction to implement the steps in the method embodiment as Figure 3 shown. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment. Each implementation process and implementation manner of the above method embodiment can be applied to this terminal embodiment, and the same technical effect can be achieved.

[0515] Specifically, Figure 12 FIG. is a schematic hardware structure diagram of a terminal for implementing an embodiment of the present application.

[0516] The terminal 600 includes, but is not limited to, at least some components such as a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609, and a processor 610.

[0517] Those skilled in the art can understand that the terminal 600 may further include a power supply (such as a battery) for supplying power to each component. The power supply can be logically connected to the processor 610 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 12 The terminal structure shown in does not limit the terminal. The terminal may include more or fewer components than shown in the figure, or combine some components, or have different component arrangements, which will not be elaborated herein.

[0518] It should be understood that in the embodiments of the present application, the input unit 604 may include a Graphics Processing Unit (GPU) 6041 and a microphone 6042. The GPU 6041 processes the image data of static pictures or videos obtained by an image capturing device (such as a camera) in a video capture mode or an image capture mode. The display unit 606 may include a display panel 6061, and the display panel 6061 may be configured in the form of, for example, a liquid crystal display, an organic light-emitting diode, etc. The user input unit 607 includes at least one of a touch panel 6071 and other input devices 6072. The touch panel 6071 is also referred to as a touch screen. The touch panel 6071 may include two parts: a touch detection device and a touch controller. The other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be elaborated here.

[0519] In the embodiments of the present application, after receiving downlink data from a network-side device, the radio frequency unit 601 may transmit it to the processor 610 for processing; in addition, the radio frequency unit 601 may send uplink data to the network-side device. Generally, the radio frequency unit 601 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc.

[0520] The memory 609 can be used to store software programs or instructions and various data. The memory 609 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data. Among them, the first storage area may store an operating system, application programs or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 609 may include a volatile memory or a non-volatile memory, or, the memory 609 may include both a volatile memory and a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct rambus random access memory (DRRAM). The memory 609 in the embodiments of the present application includes, but is not limited to, these and any other suitable types of memories.

[0521] The processor 610 may include one or more processing units; optionally, the processor 610 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above modem processor may not be integrated into the processor 610 either.

[0522] Among them, the processor 610 is used for:

[0523] In the store-and-forward operation mode, perform a first operation;

[0524] Among them, the first operation includes any one of the following:

[0525] Do not start the first non-access stratum (NAS) timer;

[0526] Set the value of the first NAS timer based on a first time value, where the first time value is a time value for the store-and-forward operation mode;

[0527] Set the first NAS timer based on first information, where the first information is used to indicate store-and-forward operation assistance information.

[0528] Optionally, the processor 610 is further configured to:

[0529] Determine whether it is in the store-and-forward operation mode according to pre-configured information.

[0530] Optionally, the pre-configured information is used to indicate at least one of the following:

[0531] Location information corresponding to the store-and-forward operation mode; network information corresponding to the store-and-forward operation mode.

[0532] Optionally, the processor 610 is specifically configured to perform at least one of the following:

[0533] Determine whether it is in the store-and-forward operation mode based on whether the location information of the terminal matches the location information corresponding to the store-and-forward operation mode;

[0534] Determine whether it is in the store-and-forward operation mode based on whether the selected network information matches the network information corresponding to the store-and-forward operation mode.

[0535] Optionally, in the store-and-forward operation mode, the processor 610 is further configured to:

[0536] Determine whether it is in the store-and-forward operation mode based on first indication information;

[0537] The first indication information is used to indicate at least one of the following:

[0538] Whether a first cell supports the store-and-forward operation mode;

[0539] One or more cells in the store-and-forward operation mode;

[0540] Whether the cell where the terminal is located is in the store-and-forward operation mode;

[0541] Whether the cell where the terminal is located supports the store-and-forward operation mode;

[0542] Whether the terminal is in the store-and-forward operation mode;

[0543] Whether the terminal supports the store-and-forward operation mode;

[0544] Whether the store-and-forward operation mode is available.

[0545] Optionally, the radio frequency unit 601 is configured to:

[0546] Receive the first indication information sent by the access network device.

[0547] Optionally, the radio frequency unit 601 is configured to:

[0548] Send a first request message to the core network device;

[0549] Receive a first response message sent by the core network device;

[0550] Wherein, when the first response message indicates that the core network device accepts the first request message, the first response message includes at least one of the following: the first indication information; the first information;

[0551] When the first response message indicates that the core network device rejects the first request message, the first response message includes at least one of the following: the first indication information; the first information; first rejection information;

[0552] Wherein, the first rejection information is used to indicate the reason for rejecting the first request message.

[0553] Optionally, the radio frequency unit 601 is configured to: send a second request message to the core network device;

[0554] The processor 610 is further configured to: when the terminal determines that it has not received a second response message corresponding to the second request message, and the second request message includes second indication information, determine that it is in the store-and-forward operation mode;

[0555] Wherein, the second indication information is used to indicate that the terminal supports the store-and-forward operation mode.

[0556] Optionally, the first information includes at least one of the following:

[0557] Ephemeris information; satellite period; store-and-forward operation processing time; service link establishment delay; feedback link establishment delay.

[0558] Optionally, setting the first NAS timer based on the first information includes at least one of the following:

[0559] Set the value of the first NAS timer based on the ephemeris information or the satellite period;

[0560] Set the value of the first NAS timer based on the value of the third NAS timer and the store-and-forward operation processing time;

[0561] Set the value of the first NAS timer based on the value of the third NAS timer and the service link establishment delay;

[0562] Set the value of the first NAS timer based on the value of the third NAS timer and the latency of establishing the feedback link;

[0563] Wherein, the third NAS timer and the first NAS timer are different NAS timers.

[0564] Optionally, setting the value of the first NAS timer based on the first time value includes any one of the following:

[0565] Set the value of the first NAS timer to an infinite value;

[0566] Set the value of the first NAS timer to a pre-configured timer value;

[0567] Set the value of the first NAS timer to a protocol-predefined timer value.

[0568] Optionally, the radio frequency unit 601 is configured to: send the first information to the core network device.

[0569] It can be understood that the implementation processes of the various implementation manners mentioned in this embodiment can refer to the relevant descriptions of the method embodiment Figure 3 and achieve the same or corresponding technical effects. To avoid repetition, it will not be elaborated here.

[0570] Specifically, the terminal in the embodiment of the present application further includes: instructions or programs stored in the memory 609 and executable on the processor 610. The processor 610 invokes the instructions or programs in the memory 609 to execute Figure 4 the methods executed by the shown modules and achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0571] The embodiment of the present application further provides a network-side device. The network-side device is a core network device, including a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run programs or instructions to implement as Figure 3 the steps of the method embodiment shown. This embodiment of the network-side device corresponds to the embodiment of the NAS timer processing method applied to the core network device. Each implementation process and implementation manner of the above method embodiment can be applied to this embodiment of the network-side device, and the same technical effects can be achieved.

[0572] Specifically, the embodiment of the present application further provides a network-side device. The network-side device is a core network device. As Figure 13As shown in the figure, the network-side device 700 includes: an antenna 701, a radio frequency device 702, a baseband device 703, a processor 704, and a memory 705. The antenna 701 is connected to the radio frequency device 702. In the uplink direction, the radio frequency device 702 receives information through the antenna 701 and sends the received information to the baseband device 703 for processing. In the downlink direction, the baseband device 703 processes the information to be sent and sends it to the radio frequency device 702. After processing the received information, the radio frequency device 702 sends it out through the antenna 701.

[0573] In the above embodiments, the method executed by the network-side device can be implemented in the baseband device 703, and the baseband device 703 includes a baseband processor.

[0574] The baseband device 703 may include, for example, at least one baseband board, and multiple chips are arranged on the baseband board, such as Figure 13 As shown in the figure, one of the chips is, for example, a baseband processor, which is connected to the memory 705 through a bus interface to call the program in the memory 705 and execute the operations of the network device shown in the above method embodiments.

[0575] The network-side device may further include a network interface 706, and the interface is, for example, a Common Public Radio Interface (CPRI).

[0576] Specifically, the network-side device 700 in the embodiments of the present application further includes: instructions or programs stored on the memory 705 and executable on the processor 704. The processor 704 calls the instructions or programs in the memory 705 to execute Figure 5 the methods executed by the modules shown in the figure and achieve the same technical effects. To avoid repetition, they are not described herein again.

[0577] The embodiments of the present application further provide a readable storage medium. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, each process of the above NAS timer processing method embodiment is implemented, and the same technical effects can be achieved. To avoid repetition, they are not described herein again.

[0578] Wherein, the processor is the processor in the terminal described in the above embodiments. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk, or an optical disc, etc. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0579] Another embodiment of the present application further provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run programs or instructions to implement each process of the above-described embodiment of the NAS timer processing method, and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0580] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip.

[0581] Another embodiment of the present application further provides a computer program / program product. The computer program / program product is stored in a storage medium. The computer program / program product is executed by at least one processor to implement each process of the above-described embodiment of the NAS timer processing method, and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0582] The embodiments of the present application further provide a NAS timer processing system, including: a terminal and a network-side device. The terminal can be used to execute the steps of the NAS timer processing method applied to the terminal as described above, and the network-side device can be used to execute the steps of the NAS timer processing method applied to the network-side device as described above.

[0583] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed. It may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may be added, omitted or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0584] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-described embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disc, etc.) and includes several instructions for causing a terminal or a network-side device to execute the methods described in various embodiments of the present application.

[0585] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms of embodiments without departing from the purpose of the present application and the scope protected by the claims. All these embodiments fall within the protection scope of the present application.

Claims

1. A NAS timer processing method, characterized in that, including: In the store-and-forward operation mode, the terminal performs a first operation; wherein, the first operation includes any one of the following: Do not start the first non-access stratum (NAS) timer; Set the value of the first NAS timer based on a first time value, where the first time value is a time value for the store-and-forward operation mode; Set the first NAS timer based on first information, where the first information is used to indicate store-and-forward operation assistance information.

2. The method according to claim 1, wherein Before the terminal performs the first operation, the method further includes: The terminal determines whether it is in the store-and-forward operation mode according to pre-configured information.

3. The method according to claim 2, wherein The pre-configured information is used to indicate at least one of the following: Location information corresponding to the store-and-forward operation mode; Network information corresponding to the store-and-forward operation mode.

4. The method according to claim 2 or 3, characterized in that, The terminal determines whether it is in the store-and-forward operation mode according to pre-configured information, including at least one of the following: The terminal determines whether it is in the store-and-forward operation mode based on whether the location information of the terminal matches the location information corresponding to the store-and-forward operation mode; The terminal determines whether it is in the store-and-forward operation mode based on whether the selected network information matches the network information corresponding to the store-and-forward operation mode.

5. The method according to claim 1, characterized in that, Before the terminal performs the first operation, the method further includes: The terminal determines whether it is in the store-and-forward operation mode based on first indication information; The first indication information is used to indicate at least one of the following: Whether a first cell supports the store-and-forward operation mode; One or more cells in the store-and-forward operation mode; Whether the cell where the terminal is located is in the store-and-forward operation mode; Whether the cell where the terminal is located supports the store-and-forward operation mode; Whether the terminal is in the store-and-forward operation mode; Whether the terminal supports the store-and-forward operation mode; Whether the store-and-forward operation mode is available.

6. The method according to claim 5, characterized in that Before the terminal determines whether it is in the store-and-forward operation mode based on first indication information, the method further includes: The terminal receives the first indication information sent by the access network device.

7. The method according to any one of claims 1 to 6, characterized in that, The method further includes: The terminal sends a first request message to the core network device; The terminal receives a first response message sent by the core network device; wherein, when the first response message indicates that the core network device accepts the first request message, the first response message includes at least one of the following: the first indication information; the first information; when the first response message indicates that the core network device rejects the first request message, the first response message includes at least one of the following: the first indication information; the first information; first rejection information; wherein, the first rejection information is used to indicate the reason for rejecting the first request message.

8. The method according to any one of claims 1 to 7, characterized in that The method further includes: The terminal sends a second request message to the core network device; When the terminal determines that it has not received a second response message corresponding to the second request message, and the second request message includes second indication information, the terminal determines that it is in the store-and-forward operation mode; wherein, the second indication information is used to indicate that the terminal supports the store-and-forward operation mode.

9. The method according to any one of claims 1-8, characterized in that, The first information includes at least one of the following: Ephemeris information; satellite period; store-and-forward operation processing time; service link establishment delay; feedback link establishment delay.

10. The method according to claim 9, wherein Setting the first NAS timer based on the first information includes at least one of the following: Setting the value of the first NAS timer based on the ephemeris information or the satellite period; Setting the value of the first NAS timer based on the value of the third NAS timer and the store-and-forward operation processing time; Setting the value of the first NAS timer based on the value of the third NAS timer and the service link establishment delay; Setting the value of the first NAS timer based on the value of the third NAS timer and the feedback link establishment delay; Wherein, the third NAS timer and the first NAS timer are different NAS timers.

11. The method according to any one of claims 1-10, characterized in that, Setting the value of the first NAS timer based on the first time value includes any one of the following: Setting the value of the first NAS timer to an infinite value; Setting the value of the first NAS timer to a pre-configured timer value; Setting the value of the first NAS timer to a protocol-predefined timer value.

12. The method according to any one of claims 1-11, characterized in that, The method further includes: The terminal sends the first information to the core network device.

13. A method for processing NAS timers, characterized in that, Including: In the store-and-forward operation mode, the core network device performs a second operation; Wherein, the second operation includes any one of the following: Not starting the second NAS timer; Setting the value of the second NAS timer based on the second time value; Setting the second NAS timer based on the first information; Sending the first information to the terminal; Wherein, the first information is used to indicate store-and-forward operation assistance information, and the second time value is a time value for the store-and-forward operation mode.

14. The method according to claim 13, characterized in that, The method further includes: The core network device sends a third request message to the network function entity, and the third request message is used to request the first information; The core network device receives the first information sent by the network function entity.

15. The method according to claim 13, wherein Before setting the second NAS timer based on the first information, the method further includes at least one of the following: The core network device receives the first information from the access network device; The core network device obtains the pre-configured first information; The core network device receives the first information from the terminal.

16. The method according to any one of claims 13 - 15, characterized in that, Before the core network device performs the second operation, the method further includes: The core network device determines whether the terminal or the core network device is in the store-and-forward operation mode based on at least one of the following: Pre-configured information; Received second indication information from the terminal, and the second indication information is used to indicate that the terminal supports the store-and-forward operation mode; Received radio access technology (RAT) type information from the access network device.

17. The method according to claim 16, wherein The pre-configured information is used to indicate at least one of the following: Location information corresponding to the store-and-forward operation mode; network information corresponding to the store-and-forward operation mode.

18. The method according to claim 13, wherein Before the core network device performs the second operation in the store-and-forward operation mode, the method further includes: The core network device determines whether the terminal or the core network device is in the store-and-forward operation mode based on the first indication information; The first indication information is used to indicate at least one of the following: Whether the first cell supports the store-and-forward operation mode; One or more cells in the store-and-forward operation mode; Whether the cell where the terminal is located is in the store-and-forward operation mode; Whether the cell where the terminal is located supports the store-and-forward operation mode; Whether the terminal is in the store-and-forward operation mode; Whether the terminal supports the store-and-forward operation mode; Whether the store-and-forward operation mode is available.

19. The method according to claim 18, wherein The method further includes: The core network device receives a first request message sent by the terminal; The core network device sends a first response message to the terminal; Wherein, when the first response message indicates that the core network device accepts the first request message, the first response message includes at least one of the following: the first indication information; the first information; When the first response message indicates that the core network device rejects the first request message, the first response message includes at least one of the following: the first indication information; the first information; first rejection information; Wherein, the first rejection information is used to indicate the reason for rejecting the first request message.

20. The method according to any one of claims 13-19, characterized in that, The first information includes at least one of the following: Ephemeris information; satellite period; store-and-forward operation processing time; service link establishment delay; feedback link establishment delay.

21. The method according to claim 20, wherein The setting of the second NAS timer based on the first information includes at least one of the following: Setting the value of the second NAS timer based on the ephemeris information or the satellite period; Setting the value of the second NAS timer based on the value of the fourth NAS timer and the store-and-forward operation processing time; Setting the value of the second NAS timer based on the value of the fourth NAS timer and the service link establishment delay; Setting the value of the second NAS timer based on the value of the fourth NAS timer and the feedback link establishment delay; Wherein, the fourth NAS timer and the second NAS timer are different NAS timers.

22. The method according to any one of claims 13-21, characterized in that, The setting of the value of the second NAS timer based on the second time value includes any one of the following: Setting the value of the second NAS timer to an infinite value; Setting the value of the second NAS timer to a pre-configured timer value; Setting the value of the second NAS timer to a protocol-predefined timer value; Setting the sum value of the value of the fourth NAS timer and the second time value as the value of the second NAS timer, the fourth NAS timer and the second NAS timer are different NAS timers, and the second time value is a pre-configured time value.

23. A NAS timer processing device, characterized in that, The terminal includes the NAS timer processing device, including: An execution module, configured to execute a first operation in the store-and-forward operation mode; Wherein, the first operation includes any one of the following: Not starting the first non-access stratum NAS timer; Setting the value of the first NAS timer based on a first time value, the first time value being a time value for the store-and-forward operation mode; Setting the first NAS timer based on the first information, the first information being used to indicate store-and-forward operation assistance information.

24. The device according to claim 23, characterized in that, The device further includes: A first determination module, configured to determine whether it is in the store-and-forward operation mode according to pre-configured information.

25. The device according to claim 24, characterized in that The pre-configured information is used to indicate at least one of the following: Location information corresponding to the store-and-forward operation mode; network information corresponding to the store-and-forward operation mode.

26. The device according to claim 23, characterized in that, The apparatus further includes: A second determination module, configured to determine whether it is in the store-and-forward operation mode based on first indication information; The first indication information is used to indicate at least one of the following: Whether a first cell supports the store-and-forward operation mode; One or more cells in the store-and-forward operation mode; Whether the cell where the terminal is located is in the store-and-forward operation mode; Whether the cell where the terminal is located supports the store-and-forward operation mode; Whether the terminal is in the store-and-forward operation mode; Whether the terminal supports the store-and-forward operation mode; Whether the store-and-forward operation mode is available.

27. The device according to any one of claims 23-26, characterized in that, The apparatus further includes: A first sending module, configured to send a first request message to a core network device; A receiving module, configured to receive a first response message sent by the core network device; Wherein, when the first response message indicates that the core network device accepts the first request message, the first response message includes at least one of the following: the first indication information; the first information; When the first response message indicates that the core network device rejects the first request message, the first response message includes at least one of the following: the first indication information; the first information; first rejection information; Wherein, the first rejection information is used to indicate the reason for rejecting the first request message.

28. A NAS timer processing device, characterized in that, The core network device includes the NAS timer processing apparatus, including: An execution module, configured to perform a second operation in the store-and-forward operation mode; Wherein, the second operation includes any one of the following: Not starting a second NAS timer; Setting the value of the second NAS timer based on a second time value; Setting the second NAS timer based on the first information; Sending the first information to the terminal; Wherein, the first information is used to indicate store-and-forward operation assistance information, and the second time value is a time value for the store-and-forward operation mode.

29. A terminal, characterized in that, It includes a processor and a memory, and the memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the NAS timer processing method according to any one of claims 1-12 are implemented.

30. A network-side device, characterized in that, It includes a processor and a memory, and the memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the NAS timer processing method according to any one of claims 13-22 are implemented.

31. A chip, characterized in that, The chip includes a processor and a communication interface. The communication interface is coupled to the processor, and the processor is configured to run a program or instruction to implement the steps of the NAS timer processing method according to any one of claims 1-12, or to implement the steps of the NAS timer processing method according to any one of claims 13-22.

32. A readable storage medium, characterized in that, The program or instructions are stored on the readable storage medium, and when the program or instructions are executed by a processor, the steps of the NAS timer processing method described in any one of claims 1-12 are implemented, or the steps of the NAS timer processing method described in any one of claims 13-22 are implemented.

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