Paging method, paging device and network side equipment

Abstract

The invention discloses a paging method and device and network side equipment, and belongs to the technical field of communication, and the paging method comprises the steps that first equipment receives a paging message, the paging message carries tracking area information, and the tracking area information is used for assisting in paging a terminal; the first device stores the paging message; and under the condition that the first equipment covers a tracking area indicated by the tracking area information or a service link between the first equipment and the terminal is available, the first equipment pages the terminal in a target cell, and the target cell belongs to the tracking area indicated by the tracking area information.

Description

Technical Field

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

[0002] In some related technologies, when there is downlink data for a terminal, the core network element only sends a paging message to the device in the tracking area (TA) where the terminal is located. That is, only the device currently covering the TA where the terminal is located can receive the paging message. In practice, many devices may not currently cover the TA where the terminal is located, that is, they will not receive the paging message of the terminal, resulting in the inability to page the terminal, and further making the reliability of terminal paging relatively poor. Summary of the Invention

[0003] Embodiments of this application provide a paging method, apparatus, and network-side device, which can solve the problem of relatively poor reliability of terminal paging.

[0004] In a first aspect, a paging method is provided, including:

[0005] A first device receives a paging message, where the paging message carries tracking area information, and the tracking area information is used to assist in paging a terminal;

[0006] The first device stores the paging message;

[0007] When the first device covers the tracking area indicated by the tracking area information or the service link between the first device and the terminal is available, the first device pages the terminal in a target cell, and the target cell belongs to the tracking area indicated by the tracking area information.

[0008] In a second aspect, a paging method is provided, characterized by including:

[0009] A third device receives a paging message, where the paging message carries tracking area information, and the tracking area information is used to assist in paging a terminal;

[0010] The third device performs a processing operation on the paging message, and the processing operation includes one or more of the following:

[0011] The third device discards the paging message;

[0012] The third device stores the paging message;

[0013] The third device forwards the paging message to a device with which there is an inter-satellite link (ISL) between the third device and the third device.

[0014] In a third aspect, a paging method is provided, including:

[0015] A core network element sends a paging message to one or more fourth devices, where the paging message carries tracking area information, and the tracking area information is used to assist in paging the terminal;

[0016] The feeder link between the fourth device and the core network element is available.

[0017] In a fourth aspect, a paging device is provided, including:

[0018] A receiving module, configured to receive a paging message, where the paging message carries tracking area information, and the tracking area information is used to assist in paging the terminal;

[0019] A storage module, configured to store the paging message;

[0020] A paging module, configured to, when the first device covers the tracking area indicated by the tracking area information or the service link between the first device and the terminal is available, the first device pages the terminal in a target cell, and the target cell belongs to the tracking area indicated by the tracking area information.

[0021] In a fifth aspect, a paging device is provided, including:

[0022] A receiving module, configured to receive a paging message, where the paging message carries tracking area information, and the tracking area information is used to assist in paging the terminal;

[0023] An execution module, configured to perform a processing operation on the paging message, and the processing operation includes one or more of the following:

[0024] Discard the paging message;

[0025] Store the paging message;

[0026] Forward the paging message to a device having an inter-satellite link (ISL) with a third device.

[0027] In a sixth aspect, a paging device is provided, including:

[0028] A sending module, configured to send a paging message to one or more fourth devices, where the paging message carries tracking area information, and the tracking area information is used to assist in paging the terminal;

[0029] The feeder link between the fourth device and the core network element is available.

[0030] In a seventh aspect, a network-side device is provided. The network-side device includes a processor and a memory. The memory stores programs or instructions that can run on the processor. When the programs or instructions are executed by the processor, the steps of the paging method on the first device side provided in the embodiments of the present application are implemented, or when the programs or instructions are executed by the processor, the steps of the paging method on the third device side provided in the embodiments of the present application are implemented, or when the programs or instructions are executed by the processor, the steps of the paging method on the core network element side provided in the embodiments of the present application are implemented.

[0031] In an eighth aspect, a network-side device is provided, including a processor and a communication interface. The communication interface is used to receive a paging message, and the paging message carries tracking area information, and the tracking area information is used to assist in paging a terminal. The processor is used to store the paging message. The communication interface is further used to, when the first device covers the tracking area indicated by the tracking area information or the service link between the first device and the terminal is available, the first device pages the terminal in a target cell, and the target cell belongs to the tracking area indicated by the tracking area information.

[0032] In a ninth aspect, a network-side device is provided, including a processor and a communication interface. The communication interface is used to receive a paging message, and the paging message carries tracking area information, and the tracking area information is used to assist in paging a terminal. The processor or the communication interface is used to perform processing operations on the paging message, and the processing operations include one or more of the following: discarding the paging message; storing the paging message; forwarding the paging message to a device having an inter-satellite link (ISL) with a third device.

[0033] In a tenth aspect, a network-side device is provided, including a processor and a communication interface. The communication interface is used to send a paging message to one or more fourth devices, and the paging message carries tracking area information, and the tracking area information is used to assist in paging a terminal; and the feeder link between the fourth device and the core network element is available.

[0034] In an eleventh aspect, a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the paging method on the first device side provided in the embodiments of the present application are implemented, or the steps of the paging method on the third device side provided in the embodiments of the present application are implemented, or the steps of the paging method on the core network element side provided in the embodiments of the present application are implemented.

[0035] In a twelfth aspect, a wireless communication system is provided, including: a core network element and a first device, or a core network element, a first device, and a third device; wherein, the core network element can be used to execute the steps of the paging method on the core network element side provided in the embodiments of the present application, the first device can be used to execute the steps of the paging method on the first device side provided in the embodiments of the present application, and the third device can be used to execute the steps of the paging method on the third device side provided in the embodiments of the present application.

[0036] In a thirteenth aspect, a chip is provided, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the paging method on the first device side provided in the embodiments of the present application, or to implement the paging method on the third device side provided in the embodiments of the present application, or to implement the paging method on the core network element side provided in the embodiments of the present application.

[0037] In a fourteenth aspect, a computer program / program product is provided, the computer program / program product 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 paging method on the first device side provided in the embodiments of the present application, or the computer program / program product is executed by at least one processor to implement the steps of the paging method on the third device side provided in the embodiments of the present application, or the computer program / program product is executed by at least one processor to implement the steps of the paging method on the core network element side provided in the embodiments of the present application.

[0038] In the embodiments of the present application, the first device receives a paging message, the paging message carries tracking area information, and the tracking area information is used to assist in paging the terminal; the first device stores the paging message; when the first device covers the tracking area indicated by the tracking area information or the service link between the first device and the terminal is available, the first device pages the terminal in a target cell, and the target cell belongs to the tracking area indicated by the tracking area information. In this way, since the paging message is stored after being received, when the first device covers the tracking area indicated by the tracking area information or the service link between the first device and the terminal is available, the terminal is paged in the target cell, thereby improving the reliability of terminal paging. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0040] Figure 2 is a schematic diagram of a wireless communication system provided by the embodiments of the present application;

[0041] Figure 3It is a schematic diagram of another wireless communication system provided by an embodiment of the present application;

[0042] Figure 4 It is a schematic diagram of another wireless communication system provided by an embodiment of the present application;

[0043] Figure 5 It is a flowchart of a paging method provided by an embodiment of the present application;

[0044] Figure 6 It is a flowchart of another paging method provided by an embodiment of the present application;

[0045] Figure 7 It is a flowchart of another paging method provided by an embodiment of the present application;

[0046] Figure 8 It is a schematic diagram of a paging provided by an embodiment of the present application;

[0047] Figure 9 It is a schematic diagram of another paging provided by an embodiment of the present application;

[0048] Figure 10 It is a schematic diagram of another paging provided by an embodiment of the present application;

[0049] Figure 11 It is a schematic diagram of another paging provided by an embodiment of the present application;

[0050] Figure 12 It is a structural diagram of a paging device provided by an embodiment of the present application;

[0051] Figure 13 It is a structural diagram of another paging device provided by an embodiment of the present application;

[0052] Figure 14 It is a structural diagram of another paging device provided by an embodiment of the present application;

[0053] Figure 15 It is a structural diagram of a communication device provided by an embodiment of the present application;

[0054] Figure 16 It is a structural diagram of a device provided by an embodiment of the present application;

[0055] Figure 17 It is a structural diagram of another device provided by an embodiment of the present application. Detailed implementation manners

[0056] 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 of protection of the present application.

[0057] 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 herein, 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 more. 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.

[0058] The term "indication" in the present 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 tells the receiver specific information, operations to be performed, or 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.

[0059] It should be noted that the technology described in the embodiments of this application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but 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 in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and the NR term is used in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th th Generation (6G) communication system.

[0060] Figure 1A block diagram of a wireless communication system to which 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 appliances 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., which are terminal-side devices. The wearable device includes: a smart watch, a smart bracelet, a smart earphone, a smart glasses, a smart jewelry (smart bracelet, smart bracelet, smart ring, smart necklace, smart anklet, smart ankle chain, etc.), a smart wristband, a 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.

[0061] The network-side device 12 may include an access network device or a core network device. Among them, the access network device may 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 may 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 may be referred to as Node B (NB), evolved Node B (eNB), 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), on-board access network device, centralized unit (CU) of the on-board access network device, distributed unit (DU) of the on-board access network device, CU of the on-board access network device, DU of the on-board access network device, 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.

[0062] Core network devices, also known as core network network elements, may include but are not limited to at least one of the following: core network nodes, core network functions, 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), 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.

[0063] The deployment scenario of Non-terrestrial networks (NTN) can be as Figure 2As shown in the figure, the link between the terminal and the satellite is called the service link, and the link between the satellite and the terrestrial gateway is called the feeder link, which can also be called the feed link. In some scenarios (such as low-earth orbit satellites), due to satellite movement, the service link or the feeder link may switch. For service link switching, the serving satellite of all terminals within a cell needs to switch from one satellite to another. For feeder link switching, a certain satellite needs to switch from one terrestrial gateway to another terrestrial gateway.

[0064] NTN communication systems can be divided into two types: NTN communication systems based on transparent payload and NTN communication systems based on regenerative payload. Among them, for NTN communication systems based on transparent payload, in this deployment environment, terminals, access network devices, and core network elements are all deployed on the ground, and the communication data between the terminal and the network-side device is relayed via the satellite in the air. In this system, the satellite is only used to forward the data between the access network device and the terminal, and does not decode and process this data. For NTN communication systems based on regenerative payload, the satellite has some or all of the functions of the access network device and can decode and process uplink or downlink data. Exemplarily, if the satellite has all the functions of the access network, the access network device can be called the on-satellite access network device or the on-satellite base station device. In popular terms, it can also be called the base station on the satellite. In this case, the central unit CU function of the access network is called the CU of the on-satellite access network, and the DU function of the access network is called the distributed unit DU of the on-satellite access network. If the satellite has the central unit CU function of the access network, the central unit CU of the access network can be called the on-satellite CU of the access network device. In popular terms, it can also be called the CU on the satellite. If the satellite has the DU function of the access network, the DU of the access network can be called the on-satellite DU of the access network device. In popular terms, it can also be called the DU on the satellite.

[0065] In the NTN communication system, to achieve data or signaling interaction between the terminal and the terrestrial network, it is necessary to ensure that the service link and the feeder link can be connected simultaneously. For example, as Figure 3 shown in the figure. However, in some cases, such as in the initial stage of satellite network deployment, it cannot be guaranteed that the service link and the feeder link can be connected simultaneously.

[0066] In the embodiments of this application, to support data transmission (such as delay-tolerant service data), a store-and-forward (S&F) communication mode is proposed, such as Figure 4As shown in the figure. Taking the uplink data transmission as an example, when the terminal has uplink data to send, it can first send the data to the satellite through the service link (as shown in step A in the figure), and the satellite stores the relevant data. When the satellite runs to where the feeder link is available, it forwards the stored data to the ground network (as shown in step B in the figure). Similarly, when there is downlink data to send to the terminal, the ground network first sends the data to the satellite, and the satellite stores the relevant downlink data. When the satellite runs to where the service link is available, it forwards the stored data to the terminal.

[0067] It should be noted that the scenarios corresponding to the embodiments of the present application can be scenarios for network-side devices, or scenarios where some hardware or functions in the network-side devices can move. For example, the network-side devices, or some hardware or functions in the network-side devices are located on the satellite, or are located on other movable devices (such as various mobile carriers like cars, airplanes, drones, ships, etc.).

[0068] Next, with reference to the accompanying drawings, a paging method, device, and network-side device provided by the embodiments of the present application will be described in detail through some embodiments and their application scenarios.

[0069] Please refer to Figure 5 , Figure 5 which is a flowchart of a paging method provided by the embodiments of the present application. As Figure 5 shown, it includes the following steps:

[0070] Step 501, a first device receives a paging message, and the paging message carries tracking area information, and the tracking area information is used to assist in paging the terminal;

[0071] Among them, the above-mentioned first device is a network-side device, which can be an on-satellite device, a device related to the satellite, or a device in a moving state or supporting movement (i.e., having the ability to move). In the case where the network-side device is an on-satellite device, it can include any one of the following:

[0072] On-satellite access network device;

[0073] On-satellite CU of the access network device;

[0074] CU of the on-satellite access network device.

[0075] The above-mentioned first device receiving the paging message can receive the paging message from a core network element, or from other on-satellite access network devices, on-satellite CUs of other access network devices, or CUs of other on-satellite access network devices.

[0076] The above tracking area information may be paging area information, such as a list of Tracking Area Identities (TAIs) for paging (TAI list for paging). The above tracking area information is used to indicate the tracking area where the terminal (possibly) is located.

[0077] The above tracking area information for assisting in paging the terminal can be understood as the above tracking area information being able to or being used to assist the first device in paging the terminal.

[0078] Step 502: The first device stores the paging message.

[0079] Among them, the first device stores the paging message may be because the movement of the first device causes the first device not to currently cover the tracking area indicated by the tracking area information or the service link between the first device and the terminal is unavailable, etc., and the paging message is stored.

[0080] It should be noted that the first device may store all the content of the above paging message or only store part of the content of the above paging message. Exemplarily, the above paging message carries multiple terminals and the paging area information corresponding to the terminals, such as terminal 1 and the corresponding tracking area 1, terminal 2 and the corresponding tracking area 2. If the above device will cover tracking area 1 and tracking area 2 in the future, the first device saves all the content of the above paging message. If the above device will cover tracking area 1 but not cover tracking area 2 in the future, the first device may only store part of the content of the above paging message, such as the content related to terminal 1.

[0081] It should be noted that the service link may be a satellite service link, or a (mobile) service link, that is, at least one network element or device in the link is in a mobile state or has the ability to move.

[0082] Step 503: When the first device covers the tracking area indicated by the tracking area information or the service link between the first device and the terminal is available, the first device pages the terminal in the target cell, and the target cell belongs to the tracking area indicated by the tracking area information.

[0083] Among them, the above target cell may be one or more cells within the above tracking area.

[0084] The above-mentioned first device covering the tracking area indicated by the tracking area information or the service link between the first device and the terminal being available may be due to the movement of the first device, such that the first device covers the tracking area indicated by the tracking area information or the service link between the first device and the terminal becomes available. For example, if the first device moves periodically, after the first device moves to a specific position, the first device covers the tracking area indicated by the tracking area information or the service link between the first device and the terminal becomes available.

[0085] The above-mentioned first device paging the terminal in the target cell means that the first device pages the terminal in the target cell based on the above-mentioned paging message.

[0086] In the embodiments of the present application, by the above steps, it is possible to store the paging message after receiving the paging message, and page the terminal in the target cell when the first device covers the tracking area indicated by the tracking area information or the service link between the first device and the terminal is available, thereby improving the reliability of terminal paging. Among them, storing the paging message after receiving the paging message, and paging the terminal in the target cell when the first device covers the tracking area indicated by the tracking area information or the service link between the first device and the terminal is available can be referred to as paging in the S&F manner, so as to page the terminal in the S&F system and ensure the terminal service experience.

[0087] As an optional implementation manner, when the first device receives the paging message, the service link between the first device and the terminal is unavailable; or, when the first device receives the paging message, the first device does not cover the tracking area indicated by the tracking area information.

[0088] When the first device receives the paging message, the service link between the first device and the terminal being unavailable can be understood as that step 501 is executed when the service link between the first device and the terminal is unavailable;

[0089] The above-mentioned situation where when the first device receives the paging message, the first device does not cover the tracking area indicated by the tracking area information can be understood as that step 501 is executed when the first device does not cover the tracking area indicated by the tracking area information.

[0090] This can achieve receiving the paging message when the service link between the first device and the terminal is unavailable or the first device does not cover the tracking area indicated by the tracking area information, so as to improve the terminal paging performance.

[0091] As an optional implementation manner, the above-mentioned first device storing the paging message includes:

[0092] In the case that the first device will cover the tracking area indicated by the tracking area information in the future, the first device stores the paging message; or

[0093] In the case that the first device is the anchor device of the terminal, the first device stores the paging message.

[0094] Herein, the above "in the future" can be understood as a time period after receiving the above paging message, or a time period after the moment when step 401 is executed. The duration of this time period is not limited. Since the first device can be an on-board device (satellite), and the on-board device can move periodically, so this "will cover in the future" can correspond to satellite coverage within this cycle, or satellite re-coverage after experiencing one or more cycles. For example, when the first device receives the paging message, it has not covered the tracking area 1 indicated by the tracking area information. After that (such as after experiencing one or more cycles of operation or within one cycle), the satellite moves to cover the tracking area 1.

[0095] The above statement that the first device will cover the tracking area indicated by the tracking area information in the future means that due to the movement of the first device, the first device will cover the tracking area indicated by the tracking area information in the future.

[0096] The above tracking area that will be covered in the future indicated by the tracking area information can be determined according to the movement information of the first device (such as ephemeris information).

[0097] In this embodiment, since the paging message is stored when the first device will cover the tracking area indicated by the tracking area information in the future, or when the first device is the anchor device of the terminal, this can avoid the first device storing useless paging messages, so as to save the storage space of the first device.

[0098] Optionally, the step of the first device storing the paging message when the first device will cover the tracking area includes:

[0099] When the first device is a store-and-forward type (S&F type) device and will cover the tracking area indicated by the tracking area information in the future, the first device stores the paging message.

[0100] In this embodiment, since the paging message is stored when the device is of the store-and-forward type (S&F type) and will cover the tracking area indicated by the tracking area information in the future, this can enable the first device to perform S&F transmission on the paging message, so as to further improve the reliability of terminal paging.

[0101] It should be noted that, in some embodiments, the above S&F type of devices may not be considered, for example, only considering that the first device will cover the tracking area indicated by the tracking area information in the future.

[0102] As an alternative embodiment, the method further includes:

[0103] In the case where the first device receives a duplicate of the paging message, discarding the duplicate paging message.

[0104] In this embodiment, it may be because the on-board device may forward the paging message based on the inter-satellite link (ISL), which may cause the above first device to receive a duplicate paging message, so as to discard the duplicate paging message, and only one paging message needs to be stored, thereby saving the storage space of the first device.

[0105] As an alternative embodiment, the paging message further carries one or more of the following:

[0106] Paging indication information, forwarding indication information, identification information of the anchor device;

[0107] Wherein, the paging indication information is used to indicate store-and-forward;

[0108] The forwarding indication information is used to indicate whether it is allowed to forward the paging message to other devices.

[0109] Wherein, the above paging indication information may be an S&F indication. The above paging indication information can be understood as the paging type being S&F paging. Or the above paging indication can be understood as the paging reason being S&F. This also applies to the subsequent embodiments and will not be elaborated hereinafter.

[0110] Wherein the above forwarding indication information is used to indicate whether the paging message is allowed to be forwarded to other devices, or to indicate whether the paging message is allowed to be forwarded to other access network devices, or to indicate whether it is allowed to be forwarded to other devices through the ISL. For example, the above forwarding indication information may be a one-bit indication information. When set to true, it indicates that forwarding is allowed. When set to false, it indicates that forwarding is not allowed. The above forwarding indication information can also be used to indicate the number of forwarding times. If the above forwarding indication information is set to 3, the above paging message can be forwarded 3 times. Each time a forwarding occurs, the number of forwarding times carried in the paging message is decremented by one. When the number of forwarding times is 0, it can be considered that the paging message cannot be forwarded anymore. It should be noted that all the content of the above paging message can be forwarded, or part of the above information can be forwarded. Additionally, it should be noted that one or more of the above paging indication information can be carried in the above paging message. Each of the above paging indication information can correspond to one or more terminals (such as a terminal group), and is used to indicate whether the terminal information corresponding to the paging indication of the above paging message can be forwarded. Exemplarily, the above paging message can be used to page multiple terminals. For example, the paging message carries paging user group 1 (terminal 1, terminal 2) and the corresponding tracking area TA1, as well as the forwarding indication information (such as set to true), user group 2 (terminal 3, terminal 4) and the corresponding tracking area TA2, as well as the forwarding indication information (such as set to false). Then part of the above paging message can be forwarded, such as paging user group 1 (terminal 1, terminal 2) and the corresponding tracking area TA1, as well as the forwarding indication information (such as set to true). This also applies to the subsequent embodiments and will not be elaborated further later.

[0111] Wherein, the above anchor device identifier is the identifier of the serving device (such as the serving base station) of the paged terminal. It should be noted that one or more anchor device identifiers can be carried in the above paging message. Exemplarily, each anchor device identifier can correspond to one or more terminals (such as a terminal group). It can be understood that the serving devices of these terminals are the same. This also applies to the subsequent embodiments and will not be elaborated further later.

[0112] In the above embodiments, since one or more of the paging indication information, the forwarding indication information, and the identifier information of the anchor device are carried, the first device that receives the paging message can process the paging message more accurately and reliably.

[0113] In some embodiments, one or more of the above paging indication information, forwarding indication information, and identification information of the anchor device may not be carried. For example, when the paging message does not carry the forwarding indication information, forwarding is not allowed by default, or forwarding is allowed by default. The default behavior may be agreed upon by the protocol or pre-configured by the network, such as Operation Administration and Maintenance (OAM) configuration.

[0114] As an alternative embodiment, the first device receiving the paging message includes one or more of the following:

[0115] The first device receives the paging message sent by the core network element;

[0116] The first device receives the paging message sent by the second device, where there is an ISL between the first device and the second device.

[0117] Among them, the first device receiving the paging message sent by the core network element may be that when the feeder link between the first device and the core network element is available, the first device receives the above paging message sent by the core network element through the feeder link.

[0118] The first device receiving the paging message sent by the second device may be receiving the paging message forwarded by the second device through the ISL. For example, when the feeder link between the first device and the core network element is unavailable, but the feeder link between the second device and the core network element is available, the second device sends the paging message received from the core network element to the first device. Another example: when the feeder link between the first device and the core network element is unavailable, the feeder link between the second device and the core network element is also unavailable, and the feeder link between the third device and the core network element is available, the third device sends the paging message received from the core network element to the second device, and the second device then forwards it to the first device.

[0119] In the above embodiments, it is possible to support multiple ways of receiving paging messages, thereby improving the transmission reliability of paging messages and further improving the reliability of terminal paging.

[0120] In an embodiment of the present application, a first device receives a paging message carrying tracking area information for assisting in paging a terminal. The first device stores the paging message. When the first device covers the tracking area indicated by the tracking area information or the service link between the first device and the terminal is available, the first device pages the terminal in a target cell that belongs to the tracking area indicated by the tracking area information. In this way, since the paging message is stored after being received, and when the first device covers the tracking area indicated by the tracking area information or the service link between the first device and the terminal is available, the terminal is paged in the target cell, thereby improving the reliability of terminal paging.

[0121] Please refer to Figure 6 , Figure 6 which is a flowchart of another paging method provided by an embodiment of the present application. As Figure 6 shown, it includes the following steps:

[0122] Step 601: A third device receives a paging message carrying tracking area information for assisting in paging a terminal.

[0123] Step 602: The third device performs a processing operation on the paging message, and the processing operation includes one or more of the following:

[0124] The third device discards the paging message;

[0125] The third device stores the paging message;

[0126] The third device forwards the paging message to a device with an inter-satellite link (ISL) between the third device and the device.

[0127] In some embodiments, the above third device may be Figure 5 the second device in the embodiment shown in

[0128] Among them, the above processing operation including one or more of the above may include but is not limited to at least one of the following:

[0129] The third device discards the paging message if the paging message cannot be forwarded or if the first device will not cover the tracking area in the future, and directly discards it. The third device may discard all the content of the above paging message or may discard part of the content of the above paging message. Exemplarily, the above paging message carries information of multiple terminals and the paging areas corresponding to the terminals, such as terminal 1 and the corresponding tracking area 1, and terminal 2 and the corresponding tracking area 2. If the above device will not cover the tracking area 1 and the tracking area 2 in the future, the first device discards all the content of the above paging message. If the above device will cover the tracking area 1 but not the tracking area 2 in the future, the first device may only discard part of the content of the above paging message, such as the content related to terminal 2.

[0130] The third device stores the paging message;

[0131] The third device forwards the paging message to a device with an Inter-Satellite Link (ISL) between the third device and the third device;

[0132] The third device forwards the paging message to a device with an ISL between the third device and the third device, and discards the paging message after forwarding;

[0133] The third device stores the paging message, and discards the paging message under some specific circumstances after storage;

[0134] The third device stores the paging message, and forwards the paging message to a device with an ISL between the third device and the third device after storage;

[0135] The third device stores the paging message, and forwards the paging message to a device with an ISL between the third device and the third device after storage, and discards the paging message after forwarding.

[0136] The device with an ISL between the above and the third device may include Figure 4 The first device or the second device in the shown Embodiment 1, or other devices.

[0137] The third device receiving the paging message may be receiving the paging message sent by a core network element, or may be receiving the paging message forwarded by other devices.

[0138] In this embodiment, since the third device performs the above processing operations on the paging message after receiving the above paging message, it can support the transmission of the paging message in the form of store-and-forward to improve the reliability of terminal paging.

[0139] Optionally, the third device includes any one of the following:

[0140] On-board access network device;

[0141] Central Unit (CU) of the on-board access network device;

[0142] The central unit CU of the on - satellite access network device;

[0143] Optionally, the third device forwards the paging message to the device with an ISL between the third device and the third device, including one or more of the following:

[0144] In the case where the third device is not a store - and - forward type device, forward the paging message to the device with an ISL between the third device and the third device;

[0145] In the case where the third device is a store - and - forward type device and will not cover the tracking area indicated by the tracking area information in the future, forward the paging message to the device with an ISL between the third device and the third device;

[0146] In the case where the third device is not the anchor device of the terminal, forward the paging message to the device with an ISL between the third device and the third device;

[0147] In the case where the paging message is allowed to be forwarded, forward the paging message to the device with an ISL between the third device and the third device.

[0148] Optionally, the third device discards the paging message, including one or more of the following:

[0149] In the case where the third device is not a store - and - forward type device, discard the paging message;

[0150] In the case where the third device is a store - and - forward type device and will not cover the tracking area indicated by the tracking area information in the future, discard the paging message;

[0151] In the case where the third device is not the anchor device of the terminal, discard the paging message; for example: the paging message carries the identifier of the anchor device and the non - forwarding indication, and the third device receiving the paging message is not the anchor device, and directly discards it;

[0152] In the case where the paging message is not allowed to be forwarded and the third device will not cover the tracking area indicated by the tracking area information in the future, discard the paging message;

[0153] In the case where the paging message is not allowed to be forwarded, discard the paging message;

[0154] After the third device forwards the paging message, the third device discards the paging message.

[0155] Optionally, the third device stores the paging message, including one or more of the following:

[0156] In the case that the third device will cover the tracking area indicated by the tracking area information in the future, the third device stores the paging message;

[0157] In the case that the third device is the anchor device of the terminal, the third device stores the paging message;

[0158] In the case that the third device is a store-and-forward type device, the third device stores the paging message;

[0159] In the case that the paging message is allowed to be forwarded, before the paging message is forwarded, the third device stores the paging message.

[0160] Optionally, the paging message further carries one or more of the following:

[0161] Paging indication information, forwarding indication information, identification information of the anchor device;

[0162] Among them, the paging indication information is used to indicate store-and-forward;

[0163] The forwarding indication information is used to indicate whether the paging message is allowed to be forwarded to other devices.

[0164] Optionally, the third device receiving the paging message includes at least one of the following:

[0165] The third device receives the paging message sent by the core network element;

[0166] The third device receives the paging message sent by other devices, where there is an ISL between the third device and the other devices.

[0167] It should be noted that this embodiment is the implementation manner of the third device corresponding to the embodiment shown in Figure 5 For the specific implementation manner, reference can be made to the relevant description of the embodiment shown in Figure 5 In order to avoid repeated description, this embodiment will not be elaborated here.

[0168] Please refer to Figure 7 , Figure 7 which is the flowchart of another paging method provided by the embodiment of the present application. As shown in Figure 7 , it includes the following steps:

[0169] Step 701, the core network element sends a paging message to one or more fourth devices, and the paging message carries tracking area information, and the tracking area information is used to assist in paging the terminal;

[0170] The feeder link between the fourth device and the core network element is available.

[0171] Among them, the above-mentioned fourth device may be Figure 5 the first device or the second device in the illustrated embodiment, or may be Figure 6 the third device in the illustrated embodiment.

[0172] Optionally, the one or more fourth devices include:

[0173] all or part of the devices available for the feeder link between the device and the core network element;

[0174] Optionally, the part of the devices includes at least one of the following:

[0175] the devices of the store-and-forward type among the devices available for the feeder link between the device and the core network element;

[0176] the devices that will cover the tracking area indicated by the tracking area information among the devices available for the feeder link between the device and the core network element.

[0177] the anchor device of the terminal available for the feeder link between the device and the core network element.

[0178] Optionally, the paging message further carries one or more of the following:

[0179] paging indication information, forwarding indication information, identification information of the anchor device;

[0180] Among them, the paging indication information is used to indicate store-and-forward;

[0181] the forwarding indication information is used to indicate whether to allow forwarding the paging message to other devices.

[0182] Optionally, the fourth device includes any one of the following:

[0183] on-board access network device;

[0184] central unit CU of the on-board access network device;

[0185] central unit CU of the on-board access network device.

[0186] It should be noted that, as an implementation manner corresponding to the core network element in the illustrated Figure 5 embodiment, the specific implementation manner can refer to the relevant description of the illustrated Figure 5 embodiment. To avoid repeated description, this embodiment will not be elaborated here.

[0187] Next, taking the data collection scenario as an example, with the first device, the second device, the third device, and the fourth device being on-board base stations, the method provided by the embodiments of the present application will be illustrated through multiple embodiments:

[0188] Embodiment 1:

[0189] In this embodiment, a paging method without ISL is mainly described. The specific application scenario can be as Figure 8 shown and may include the following steps:

[0190] Step 1: When there is downlink data for the terminal, the core network element initiates a paging process. The actions of the core network element initiating the paging process include any one of the following:

[0191] Sending a paging message to all first on-star access network devices (such as on-star base stations); Exemplarily, when there is downlink data for the terminal, assuming that currently there are N first on-star access network devices with available feeder links to the core network element, the core network element may send a paging message to all the first on-star access network devices.

[0192] Sending a paging message to at least one first on-star access network device; Exemplarily, when there is downlink data for the terminal, assuming that currently there are N first on-star access network devices with available feeder links to the core network element, the core network element may send a paging message to all the first on-star access network devices. As another example, the core network element may send a paging message to one or some of the first on-star access network devices;

[0193] Among them, the feeder link between the first on-star access network device and the core network element is available. The above first on-star access network device may be the first device, the second device, the third device, or the fourth device in the above embodiments.

[0194] In some embodiments, the first on-star access network device may be an on-star access network device of the S&F type. Exemplarily, when there is downlink data for the terminal, assuming that currently there are M on-star access network devices with available feeder links to the core network element, where N on-star access network devices are S&F type base stations, the core network element sends a paging message to the N first on-star access network devices and does not send a paging message to the other M - N on-star access network devices.

[0195] In some embodiments, the first on-star access network device may be an on-star access network device that will cover the tracking area where the terminal is located in the future (which may also be referred to as in the future). Exemplarily, when there is downlink data for the terminal, assuming that currently there are M on-star access network devices with available feeder links to the core network element, where N first on-star access network devices will cover the tracking area (Tracking Area, TA) 1 where the terminal is located in the future, the core network element sends a paging message to the N first on-star access network devices and does not send a paging message to the other M - N on-star access network devices.

[0196] Among them, the paging message carries paging area information (i.e., the above-mentioned tracking area information), and the paging area information is used to indicate the tracking area where the terminal is located. Additionally, the paging message further carries one or more of the following information:

[0197] Paging indication information, and the paging indication information may be S&F indication;

[0198] Forwarding indication information, and the forwarding indication information is used to indicate to the first on-star access network device whether the paging message is allowed to be forwarded to other base stations, such as through the inter-satellite link ISL; Exemplarily, the forwarding indication information may be a one-bit indication information. When set to true, it indicates that forwarding is allowed. When set to false, it indicates that forwarding is not allowed. It should be noted that when the paging message does not carry the forwarding indication information, it is default not to allow forwarding, or default to be able to forward.

[0199] Step 2: The first on-star access network device receives the paging message. The actions of the first on-star access network device include one or more of the following:

[0200] In the case where the first on-star access network device is not an S&F type base station, the first on-star access network device discards the paging message;

[0201] In the case where the first on-star access network device is an S&F type base station, if the first on-star access network device will not cover the area indicated by the TAC information in the paging message in the future, the first on-star access network device discards the paging message;

[0202] In the case where the first on-star access network device is an S&F type base station, if the first on-star access network device will cover the area indicated by the TAC information in the paging message in the future, the first on-star access network device stores the paging message and delays paging the terminal;

[0203] Step 3: In the case where the first on-star access network device covers the area indicated by the paging area information, the first on-star access network device pages the terminal in the first cell. Among them, the first cell is a cell belonging to the tracking area indicated by the paging area information.

[0204] Embodiment 2:

[0205] This embodiment mainly describes a paging method based on ISL, and the application scenario can be as Figure 9 shown, including the following steps:

[0206] Step 1: When there is downlink data for the terminal, the core network element initiates a paging process. The actions of the core network element initiating the paging process include any one of the following:

[0207] Send a paging message to all first on-star access network devices; Exemplarily, when there is downlink data for the terminal, assuming that currently there are N first on-star access network devices with available feeder links to the core network element, the core network element can send a paging message to all the first on-star access network devices.

[0208] Send a paging message to at least one first on-star access network device; Exemplarily, when there is downlink data for the terminal, assuming that currently there are N first on-star access network devices with available feeder links to the core network element, the core network element can send a paging message to all the first on-star access network devices. As another example, the core network element can send a paging message to one or some of the first on-star access network devices;

[0209] Wherein, the feeder link between the first on-star access network device and the core network element is available, and the above first on-star access network device can be the first device, the second device, the third device or the fourth device in the above embodiments.

[0210] Furthermore, the first on-star access network device can be an on-star access network device of the S&F type. Exemplarily, when there is downlink data for the terminal, assuming that currently there are M on-star access network devices with available feeder links to the core network element, and among them, there are N on-star access network devices that are S&F type base stations, then the core network element sends a paging message to the N first on-star access network devices and does not send a paging message to the other M - N on-star access network devices.

[0211] Even further, the first on-star access network device can be an on-star access network device that will cover the tracking area where the terminal is located in the future. Exemplarily, when there is downlink data for the terminal, assuming that currently there are M on-star access network devices with available feeder links to the core network element, and among them, there are N first on-star access network devices that will cover the tracking area TA1 where the terminal is located in the future, then the core network element sends a paging message to the N first on-star access network devices and does not send a paging message to the other M - N on-star access network devices.

[0212] Wherein, the paging message carries paging area information (i.e., the above tracking area information), and the paging area information is used to indicate the tracking area where the terminal is located. Additionally, the paging message also carries one or more of the following information:

[0213] Paging indication information, and the paging indication information can be S&F indication;

[0214] Forwarding indication information, which is used to indicate whether the first on-board access network device is allowed to forward the paging message to other base stations, such as through the inter-satellite link (ISL); Exemplarily, the forwarding indication information may be a one-bit indication information. When set to true, it indicates that forwarding is allowed. When set to false, it indicates that forwarding is not allowed. It should be noted that when the paging message does not carry the forwarding indication information, by default, forwarding is not allowed, or by default, forwarding is allowed;

[0215] Anchor satellite (i.e., the above-mentioned anchor device) identification information; wherein, the anchor satellite identification information is used to indicate the anchor satellite of the terminal, and the anchor satellite is the satellite that stores the terminal context;

[0216] Step 2: The first on-board access network device receives the paging message. The actions of the first on-board access network device include one or more of the following:

[0217] When the first on-board access network device is not an S&F type base station, the first on-board access network device forwards the paging message to the second on-board access network device; wherein, there is an ISL between the first on-board access network device and the second on-board access network device;

[0218] When the first on-board access network device is not an S&F type base station, the first on-board access network device discards the paging message;

[0219] When the first on-board access network device is an S&F type base station, if the first on-board access network device will not cover the tracking area indicated by the tracking area code (TAC) information in the paging message in the future, the first on-board access network device forwards the paging message to the third on-board access network device; wherein, there is an ISL between the first on-board access network device and the third on-board access network device;

[0220] When the first on-board access network device is an S&F type base station, if the first on-board access network device will not cover the area indicated by the TAC information in the paging message in the future, the first on-board access network device discards the paging message;

[0221] When the first on-board access network device is an S&F type base station, if the first on-board access network device will cover the area indicated by the TAC information in the paging message in the future, the first on-board access network device stores the paging message and delays paging the terminal;

[0222] Step 3: When the access network device on the first satellite covers the area indicated by the paging area information, the access network device on the first satellite pages the terminal within the first cell. Herein, the first cell is a cell belonging to the tracking area indicated by the paging area information.

[0223] Embodiment 3:

[0224] This embodiment mainly describes a paging method based on an anchor satellite without an Inter-Satellite Link (ISL). The application scenario can be as Figure 10 shown, and includes the following steps:

[0225] Step 1: When there is downlink data for the terminal, the core network element initiates a paging process. The behavior of the core network element initiating the paging process includes that when the feeder link between the core network element and the anchor satellite of the terminal (i.e., the above-mentioned anchor device) is available, the core network element sends a paging message to the anchor satellite of the terminal. Herein, the anchor satellite is an S&F type satellite. As shown in the above example figure, satellite A is the anchor satellite of the terminal.

[0226] Herein, the paging message may carry paging area information (i.e., the above-mentioned tracking area information), and the paging area information is used to indicate the tracking area where the terminal is located. Additionally, the paging message also carries paging indication information, and the paging indication information may be an S&F indication. In another example, the paging information does not carry paging area information and only carries paging indication information, and the paging indication information may be an S&F indication.

[0227] Step 2: The anchor satellite of the terminal receives the paging message. The behavior of the anchor satellite includes storing the paging message and delaying paging the terminal;

[0228] Step 3: When the service link between the anchor satellite of the terminal and the terminal is available, the access network device on the first satellite pages the terminal within the first cell. Herein, the first cell is a cell belonging to the tracking area indicated by the paging area information.

[0229] Embodiment 4:

[0230] This embodiment mainly describes a paging method based on an anchor satellite with an Inter-Satellite Link (ISL). The application scenario is as Figure 11 shown, and includes the following steps:

[0231] Step 1: When there is downlink data for the terminal, the core network element initiates a paging process. The behavior of the core network element initiating the paging process includes any one of the following:

[0232] Send a paging message to all the on-star access network devices on the first star; Exemplarily, in the case of having downlink data of the terminal, assuming that currently there are N available feeder links between the on-star access network devices on the first star and the core network element, the core network element may send a paging message to all the on-star access network devices on the first star.

[0233] Send a paging message to at least one on-star access network device on the first star; Exemplarily, in the case of having downlink data of the terminal, assuming that currently there are N available feeder links between the on-star access network devices on the first star and the core network element, the core network element may send a paging message to all the on-star access network devices on the first star. As another example, the core network element may send a paging message to one or some of the on-star access network devices on the first star;

[0234] Wherein, the feeder link between the on-star access network device on the first star and the core network element is available, and the on-star access network device on the first star may be the first device, the second device, the third device or the fourth device in the above embodiments.

[0235] Further, the on-star access network device on the first star may be an on-star access network device of the S&F type. Exemplarily, in the case of having downlink data of the terminal, assuming that currently there are M on-star access network devices with available feeder links between them and the core network element, and among them, there are N on-star access network devices that are S&F type base stations, then the core network element sends a paging message to the N on-star access network devices on the first star and does not send a paging message to the other M - N on-star access network devices.

[0236] Furthermore, the on-star access network device on the first star may be an on-star access network device that will cover the tracking area where the terminal is located in the future. Exemplarily, in the case of having downlink data of the terminal, assuming that currently there are M on-star access network devices with available feeder links between them and the core network element, and among them, there are N on-star access network devices on the first star that will cover the tracking area TA1 where the terminal is located in the future, then the core network element sends a paging message to the N on-star access network devices on the first star and does not send a paging message to the other M - N on-star access network devices.

[0237] Wherein, the paging message carries paging area information (i.e., the above-mentioned tracking area information), and the paging area information is used to indicate the tracking area where the terminal is located. Additionally, the paging message also carries one or more of the following information:

[0238] Paging indication information, and the paging indication information may be S&F indication;

[0239] Forwarding indication information, which is used to indicate to the first on-satellite access network device whether the paging message is allowed to be forwarded to other base stations, such as through the inter-satellite link ISL; Exemplarily, the forwarding indication information may be a one-bit indication information. When set to true, it indicates that forwarding is allowed. When set to false, it indicates that forwarding is not allowed. It should be noted that when the paging message does not carry the forwarding indication information, it is default not to allow forwarding, or default to allow forwarding.

[0240] Anchor satellite (i.e., the above-mentioned anchor device) identification information; wherein, the anchor satellite identification information is used to indicate the anchor satellite of the terminal, and the anchor satellite is the satellite that stores the terminal context; As shown in the figure, satellite A is the anchor satellite of the terminal;

[0241] Step 2: The second on-satellite access network device receives the paging message. Among them, the way for the second on-satellite access network device to receive the paging message can be any one of the following:

[0242] Received from the core network element; It can be understood that in this case, the second on-satellite access network device and the first on-satellite access network device can be the same on-satellite access network device;

[0243] Received from the third on-satellite access network device; It can be understood that in this case, the third on-satellite access network device receives from other on-satellite access network devices via the inter-satellite link ISL. Here, the other on-satellite access network devices can be the first on-satellite access network device in step 1, or other on-satellite access network devices;

[0244] Among them, when receiving the paging message, the actions of the second on-satellite access network device include one or more of the following:

[0245] When the second on-satellite access network device is not an S&F type base station, the second on-satellite access network device forwards the paging message to the third on-satellite access network device; wherein, there is an ISL between the second on-satellite access network device and the third on-satellite access network device;

[0246] When the second on-satellite access network device is not the base station corresponding to the anchor satellite identification information, the second on-satellite access network device forwards the paging message to the fourth on-satellite access network device; wherein, there is an ISL between the second on-satellite access network device and the fourth on-satellite access network device;

[0247] When the second on-satellite access network device is the base station corresponding to the anchor satellite identification information, the second on-satellite access network device stores the paging message and delays paging the terminal;

[0248] Among them, the second satellite access network device described above may be the first device, the second device, or the third device in the above embodiments.

[0249] Furthermore, the actions of the second satellite access network device may further include:

[0250] In the case where the second satellite access network device is not an S&F type base station, the second satellite access network device discards the paging message;

[0251] In the case where the second satellite access network device is not the base station corresponding to the anchor satellite identification information, the second satellite access network device discards the paging message;

[0252] In the case where the second satellite access network device is the base station corresponding to the anchor satellite identification information, duplicate paging messages are discarded. Exemplarily, the anchor satellite may receive N copies of the paging message from multiple serving base stations via the ISL, then the anchor satellite may discard N - 1 copies of the paging message;

[0253] Step 3: When the service link between the anchor satellite of the terminal and the terminal is available, the anchor satellite pages the terminal in the first cell. Among them, the first cell is a cell belonging to the tracking area indicated by the paging area information.

[0254] In the paging method provided by the embodiments of the present application, the execution subject may be a paging device. In the embodiments of the present application, taking the paging device executing the paging method as an example, the paging device provided by the embodiments of the present application is described.

[0255] Please refer to Figure 12 , Figure 12 which is a structural diagram of a paging device provided by the embodiments of the present application. As Figure 12 shown, the paging device 1200 includes:

[0256] A receiving module 1201, configured to receive a paging message, where the paging message carries tracking area information, and the tracking area information is used to assist in paging the terminal;

[0257] A storage module 1202, configured to store the paging message;

[0258] A paging module 1203, configured to, when the first device covers the tracking area indicated by the tracking area information or the service link between the first device and the terminal is available, the first device pages the terminal in the target cell, and the target cell belongs to the tracking area indicated by the tracking area information.

[0259] Optionally, when the first device receives the paging message, the service link between the first device and the terminal is unavailable; or when the first device receives the paging message, the first device does not cover the tracking area indicated by the tracking area information.

[0260] Optionally, the first device includes any one of the following:

[0261] Space-based access network device;

[0262] Central unit CU of the space-based central unit of the access network device;

[0263] Central unit CU of the space-based access network device.

[0264] Optionally, the storage module 1202 is used for:

[0265] When the first device will cover the tracking area indicated by the tracking area information in the future, store the paging message; or

[0266] When the first device is the anchor device of the terminal, store the paging message.

[0267] Optionally, when the first device will cover the tracking area in the future, storing the paging message includes:

[0268] When the first device is a store-and-forward type device and will cover the tracking area indicated by the tracking area information in the future, store the paging message.

[0269] Optionally, the device further includes:

[0270] Discarding module, configured to discard the repeated paging message when the first device receives the repeated paging message.

[0271] Optionally, the paging message further carries one or more of the following:

[0272] Paging indication information, forwarding indication information, identification information of the anchor device;

[0273] Wherein, the paging indication information is used to indicate store-and-forward;

[0274] The forwarding indication information is used to indicate whether to allow forwarding the paging message to other devices.

[0275] Optionally, receiving the paging message includes one or more of the following:

[0276] Receiving the paging message sent by the core network element;

[0277] Receive the paging message sent by the second device, where there is an inter-satellite link (ISL) between the first device and the second device.

[0278] The above paging device can improve the reliability of terminal paging.

[0279] The information transmission device in the embodiments of this application can 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 can be a network-side device.

[0280] The information transmission device provided in the embodiments of this application can implement Figure 5 each process implemented by the method embodiments shown and achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0281] Please refer to Figure 13 , Figure 13 which is a structural diagram of a paging device provided in the embodiments of this application. As Figure 13 shown, the paging device 1300 includes:

[0282] A receiving module 1301, configured to receive a paging message, where the paging message carries tracking area information, and the tracking area information is used to assist in paging the terminal;

[0283] An execution module 1302, configured to perform a processing operation on the paging message, and the processing operation includes one or more of the following:

[0284] Discard the paging message;

[0285] Store the paging message;

[0286] Forward the paging message to a device that has an inter-satellite link (ISL) with a third device.

[0287] Optionally, the third device includes any one of the following:

[0288] On-board access network device;

[0289] Central unit (CU) of the on-board access network device;

[0290] Central unit (CU) of the on-board access network device;

[0291] Optionally, forwarding the paging message to a device that has an ISL with the third device includes one or more of the following:

[0292] In the case where the third device is not a store-and-forward type device, forward the paging message to a device that has an ISL with the third device;

[0293] When the third device is a store-and-forward type device and will not cover the tracking area indicated by the tracking area information in the future, forward the paging message to the device with an ISL between the third device and itself;

[0294] When the third device is not the anchor device of the terminal, forward the paging message to the device with an ISL between the third device and itself;

[0295] When the paging message is allowed to be forwarded, forward the paging message to the device with an ISL between the third device and itself.

[0296] Optionally, discarding the paging message includes one or more of the following:

[0297] When the third device is not a store-and-forward type device, discard the paging message;

[0298] When the third device is a store-and-forward type device and will not cover the tracking area indicated by the tracking area information in the future, discard the paging message;

[0299] When the third device is not the anchor device of the terminal, discard the paging message;

[0300] When the paging message is not allowed to be forwarded and the third device will not cover the tracking area indicated by the tracking area information in the future, discard the paging message;

[0301] When the paging message is not allowed to be forwarded, discard the paging message;

[0302] After the third device forwards the paging message, the third device discards the paging message.

[0303] Optionally, storing the paging message includes one or more of the following:

[0304] When the third device will cover the tracking area indicated by the tracking area information in the future, store the paging message;

[0305] When the third device is the anchor device of the terminal, store the paging message;

[0306] When the third device is a store-and-forward type device, store the paging message;

[0307] When the paging message is allowed to be forwarded, store the paging message before the paging message is forwarded.

[0308] Optionally, the paging message also carries one or more of the following:

[0309] Paging indication information, forwarding indication information, identification information of the anchor device;

[0310] Among them, the paging indication information is used to indicate store-and-forward;

[0311] The forwarding indication information is used to indicate whether it is allowed to forward the paging message to other devices.

[0312] Optionally, the receiving of the paging message includes at least one of the following:

[0313] Receiving the paging message sent by the core network element;

[0314] Receiving the paging message sent by other devices, where there is an ISL between the third device and the other devices.

[0315] The above paging device can improve the reliability of terminal paging.

[0316] The information transmission device in the embodiments of the present application can 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 can be a network-side device.

[0317] The information transmission device provided in the embodiments of the present application can implement Figure 6 each process implemented by the method embodiments shown, and achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0318] Please refer to Figure 14 , Figure 14 is a structural diagram of a paging device provided in the embodiments of the present application. As Figure 14 shown, the paging device 1400 includes:

[0319] A sending module 1401, configured to send a paging message to one or more fourth devices, where the paging message carries tracking area information, and the tracking area information is used to assist in paging the terminal;

[0320] The feeder link between the fourth device and the core network element is available.

[0321] Optionally, the one or more fourth devices include:

[0322] All or part of the devices with available feeder links to the core network element;

[0323] Optionally, the part of the devices includes at least one of the following:

[0324] Devices of the store-and-forward type among the devices with available feeder links to the core network element;

[0325] Devices that will cover the tracking area indicated by the tracking area information among the devices available for the feeder link with the core network element.

[0326] The anchor device of the terminal for which the feeder link with the core network element is available.

[0327] Optionally, the paging message further carries one or more of the following:

[0328] Paging indication information, forwarding indication information, identification information of the anchor device;

[0329] Among them, the paging indication information is used to indicate store-and-forward;

[0330] The forwarding indication information is used to indicate whether it is allowed to forward the paging message to other devices.

[0331] Optionally, the fourth device includes any one of the following:

[0332] On-board access network device;

[0333] On-board central unit CU of the access network device;

[0334] Central unit CU of the on-board access network device.

[0335] The above paging device can improve the reliability of terminal paging.

[0336] The information transmission device in the embodiments of the present application can 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. This electronic device can be a network-side device.

[0337] The information transmission device provided by the embodiments of the present application can implement Figure 6 Each process implemented by the method embodiment shown, and achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0338] Optionally, as Figure 15As shown in the figure, an embodiment of the present application further provides a communication device 1500, including a processor 1501 and a memory 1502. A program or instruction that can run on the processor 1501 is stored on the memory 1502. For example, when the communication device 1500 is a first device, when the program or instruction is executed by the processor 1501, each step of the paging method embodiment on the first device side is implemented, and the same technical effect can be achieved. When the communication device 1500 is a third device, when the program or instruction is executed by the processor 1501, each step of the paging method embodiment on the third device side is implemented, and the same technical effect can be achieved. When the communication device 1500 is a core network element, when the program or instruction is executed by the processor 1501, each step of the paging method embodiment on the core network element side is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be elaborated here.

[0339] An embodiment of the present application further provides a communication device, including a processor and a communication interface. The communication interface is used to receive a paging message, and the paging message carries tracking area information, and the tracking area information is used to assist in paging a terminal. The processor is used to store the paging message. The communication interface is further used to, when a first device covers the tracking area indicated by the tracking area information or the service link between the first device and the terminal is available, the first device pages the terminal in a target cell, and the target cell belongs to the tracking area indicated by the tracking area information. This communication device embodiment corresponds to the above paging method embodiment. Each implementation process and implementation manner of the above method embodiment can be applied to this communication device embodiment, and the same technical effect can be achieved.

[0340] An embodiment of the present application further provides a communication device, including a processor and a communication interface. The communication interface is used to receive a paging message, and the paging message carries tracking area information, and the tracking area information is used to assist in paging a terminal. The processor or the communication interface is used to perform a processing operation on the paging message, and the processing operation includes one or more of the following: discarding the paging message; storing the paging message; forwarding the paging message to a device that has an inter-satellite link (ISL) with a third device. This communication device embodiment corresponds to the above paging method embodiment. Each implementation process and implementation manner of the above method embodiment can be applied to this communication device embodiment, and the same technical effect can be achieved.

[0341] An embodiment of the present application further provides a device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement as Figure 5 or Figure 6Steps of the method embodiments shown. The device embodiments correspond to the above paging method embodiments. Each implementation process and realization method of the above method embodiments can be applied to the device embodiments, and the same technical effects can be achieved.

[0342] Specifically, embodiments of the present application further provide a network-side device. The network-side device can be the first device or the third device. For example, Figure 16 As shown, the network-side device 1600 includes: an antenna 1601, a radio frequency device 1602, a baseband device 1603, a processor 1604, and a memory 1605. The antenna 1601 is connected to the radio frequency device 1602. In the uplink direction, the radio frequency device 1602 receives information through the antenna 1601 and sends the received information to the baseband device 1603 for processing. In the downlink direction, the baseband device 1603 processes the information to be sent and sends it to the radio frequency device 1602. After processing the received information, the radio frequency device 1602 sends it out through the antenna 1601.

[0343] In the above embodiments, the paging method can be implemented in the baseband device 1603, and the baseband device 1603 includes a baseband processor.

[0344] The baseband device 1603 may include, for example, at least one baseband board, and a plurality of chips are arranged on the baseband board. For example, Figure 16 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 1605 through a bus interface to call the program in the memory 1605 and execute the device operations shown in the above method embodiments.

[0345] The device may further include a network interface 1606, and the interface is, for example, a Common Public Radio Interface (CPRI).

[0346] Specifically, the device 1600 of the embodiments of the present application further includes: instructions or programs stored on the memory 1605 and executable on the processor 1604. The processor 1604 calls the instructions or programs in the memory 1605 to execute Figure 12 the methods executed by the modules shown in or 13 and achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0347] In the embodiment where the above network-side device is the first device:

[0348] The radio frequency device 1602 is configured to receive a paging message, and the paging message carries tracking area information, and the tracking area information is used to assist in paging the terminal;

[0349] The memory 1605 is configured to store the paging message;

[0350] The radio frequency device 1602 is further configured to page the terminal in a target cell when the first device covers the tracking area indicated by the tracking area information or when the service link between the first device and the terminal is available, where the target cell belongs to the tracking area indicated by the tracking area information.

[0351] Optionally, when the first device receives the paging message, the service link between the first device and the terminal is unavailable; or when the first device receives the paging message, the first device does not cover the tracking area indicated by the tracking area information.

[0352] Optionally, the first device includes any one of the following:

[0353] On - satellite access network device;

[0354] Central unit CU of the on - satellite access network device;

[0355] Central unit CU of the on - satellite access network device.

[0356] Optionally, storing the paging message includes:

[0357] Storing the paging message when the first device will cover the tracking area indicated by the tracking area information in the future; or

[0358] Storing the paging message when the first device is the anchor device of the terminal.

[0359] Optionally, storing the paging message when the first device will cover the tracking area in the future includes:

[0360] When the first device is a store - and - forward type device and will cover the tracking area indicated by the tracking area information in the future, the paging message.

[0361] Optionally, the processor 1604 is configured to: discard the repeated paging message when the first device receives the repeated paging message.

[0362] Optionally, the paging message further carries one or more of the following:

[0363] Paging indication information, forwarding indication information, identification information of the anchor device;

[0364] Among them, the paging indication information is used to indicate store - and - forward;

[0365] The forwarding indication information is used to indicate whether to allow forwarding the paging message to other devices.

[0366] Optionally, the receiving of the paging message includes one or more of the following:

[0367] Receiving the paging message sent by a core network element;

[0368] Receiving the paging message sent by a second device, where there is an inter-satellite link (ISL) between the first device and the second device.

[0369] In the embodiment where the network-side device is a third device:

[0370] A radio frequency device 1602, configured to receive a paging message, where the paging message carries tracking area information for assisting in paging a terminal;

[0371] The radio frequency device 1602, the processor 1604, or the memory 1605 is configured to perform a processing operation on the paging message, and the processing operation includes one or more of the following:

[0372] The third device discards the paging message;

[0373] The third device stores the paging message;

[0374] The third device forwards the paging message to a device that has an inter-satellite link (ISL) with the third device.

[0375] Optionally, the third device includes any one of the following:

[0376] An on-satellite access network device;

[0377] The central unit (CU) of an access network device on the satellite;

[0378] The central unit (CU) of an on-satellite access network device;

[0379] Optionally, the forwarding of the paging message to a device that has an ISL with the third device includes one or more of the following:

[0380] In the case where the third device is not a store-and-forward type device, forwarding the paging message to a device that has an ISL with the third device;

[0381] In the case where the third device is a store-and-forward type device and will not cover the tracking area indicated by the tracking area information in the future, forwarding the paging message to a device that has an ISL with the third device;

[0382] In the case where the third device is not the anchor device of the terminal, forwarding the paging message to a device that has an ISL with the third device;

[0383] When the paging message is allowed to be forwarded, forward the paging message to the device with an ISL between it and the third device.

[0384] Optionally, discarding the paging message includes one or more of the following:

[0385] When the third device is not a store-and-forward type device, discard the paging message;

[0386] When the third device is a store-and-forward type device and will not cover the tracking area indicated by the tracking area information in the future, discard the paging message;

[0387] When the third device is not the anchor device of the terminal, discard the paging message;

[0388] When the paging message is not allowed to be forwarded and the third device will not cover the tracking area indicated by the tracking area information in the future, discard the paging message;

[0389] When the paging message is not allowed to be forwarded, discard the paging message;

[0390] After the third device forwards the paging message, the third device discards the paging message.

[0391] Optionally, storing the paging message includes one or more of the following:

[0392] When the third device will cover the tracking area indicated by the tracking area information in the future, store the paging message;

[0393] When the third device is the anchor device of the terminal, store the paging message;

[0394] When the third device is a store-and-forward type device, store the paging message;

[0395] When the paging message is allowed to be forwarded, store the paging message before it is forwarded.

[0396] Optionally, the paging message also carries one or more of the following:

[0397] Paging indication information, forwarding indication information, identification information of the anchor device;

[0398] Among them, the paging indication information is used to indicate store-and-forward;

[0399] The forwarding indication information is used to indicate whether the paging message is allowed to be forwarded to other devices.

[0400] Optionally, the receiving of the paging message includes at least one of the following:

[0401] Receiving the paging message sent by a core network element;

[0402] Receiving the paging message sent by another device, where there is an ISL between the third device and the other device.

[0403] The above device can improve the reliability of terminal paging.

[0404] It can be understood that the implementation processes of the various implementation manners mentioned in this embodiment may refer to the relevant descriptions of the above method embodiments and achieve the same or corresponding technical effects. To avoid repetition, they will not be elaborated here.

[0405] An embodiment of the present application further provides a device, including a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to run a program or instruction to implement Figure 6 the steps of the method embodiment as shown. This device embodiment corresponds to the above signal measurement method embodiment. The various implementation processes and implementation manners of the above method embodiment can all be applied to this device embodiment and can achieve the same technical effects.

[0406] An embodiment of the present application further provides a device, including a processor and a communication interface. The communication interface is configured to send a paging message to one or more fourth devices, where the paging message carries tracking area information, and the tracking area information is used to assist in paging the terminal; the feeder link between the fourth device and the core network element is available.

[0407] Specifically, an embodiment of the present application further provides a network-side device. As Figure 17 shown, the network-side device 1700 includes: a processor 1701, a network interface 1702, and a memory 1703. The network interface 1702 is, for example, a common public radio interface (CPRI).

[0408] Specifically, the network-side device 1700 in the embodiment of the present application further includes: instructions or programs stored in the memory 1703 and executable on the processor 1701. The processor 1701 calls the instructions or programs in the memory 1703 to execute Figure 14 the methods executed by the respective modules as shown and achieve the same technical effects. To avoid repetition, they will not be elaborated here.

[0409] The network interface 1702 is configured to send a paging message to one or more fourth devices, where the paging message carries tracking area information, and the tracking area information is used to assist in paging the terminal;

[0410] The feeder link between the fourth device and the core network element is available.

[0411] Optionally, the one or more fourth devices include:

[0412] All or part of the devices with available feeder links to the core network element;

[0413] Optionally, the part of the devices includes at least one of the following:

[0414] Devices of the store-and-forward type among the devices with available feeder links to the core network element;

[0415] Devices among the devices with available feeder links to the core network element that will cover the tracking area indicated by the tracking area information in the future.

[0416] The anchor device of the terminal with an available feeder link to the core network element.

[0417] Optionally, the paging message further carries one or more of the following:

[0418] Paging indication information, forwarding indication information, identification information of the anchor device;

[0419] Among them, the paging indication information is used to indicate store-and-forward;

[0420] The forwarding indication information is used to indicate whether it is allowed to forward the paging message to other devices.

[0421] Optionally, the fourth device includes any one of the following:

[0422] On-board access network device;

[0423] Central unit CU of the on-board access network device;

[0424] Central unit CU of the on-board access network device.

[0425] The above devices can improve the reliability of terminal paging.

[0426] 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 above, and achieve the same or corresponding technical effects. To avoid repetition, it will not be elaborated here.

[0427] The embodiment of the present application further provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, it implements each process of the paging method embodiment above, and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0428] Among them, the processor is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disks, or optical discs, etc. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0429] Another embodiment of the present application provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement each process of the above-mentioned paging method embodiment, and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0430] 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, etc.

[0431] Another embodiment of the present application provides a computer program / program product. The computer program / program product is stored in a storage medium and is executed by at least one processor to implement each process of the above-mentioned paging method embodiment, and can achieve the same technical effects. To avoid repetition, it will not be elaborated here.

[0432] Another embodiment of the present application provides a wireless communication system, including: a core network element and a first device, or a core network element, a first device, and a third device; among them, the core network element can be used to execute the steps of the paging method on the core network element side provided in the embodiments of the present application, the first device can be used to execute the steps of the paging method on the first device side provided in the embodiments of the present application, and the third device can be used to execute the steps of the paging method on the third device side provided in the embodiments of the present application.

[0433] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly 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, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods 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.

[0434] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-described example methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, they can also be implemented by hardware. This computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, 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.

[0435] 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. These embodiments are all within the protection scope of the present application.

Claims

1. A paging method, characterized in that, Including: A first device receives a paging message carrying tracking area information for assisting in paging a terminal. The first device stores the paging message. When the first device covers the tracking area indicated by the tracking area information or the service link between the first device and the terminal is available, the first device pages the terminal in a target cell that belongs to the tracking area indicated by the tracking area information.

2. The method according to claim 1, characterized in that, When the first device receives the paging message, the service link between the first device and the terminal is unavailable; or when the first device receives the paging message, the first device does not cover the tracking area indicated by the tracking area information.

3. The method according to claim 1 or 2, characterized in that, The first device includes any one of the following: An on-board access network device; The central unit CU of an access network device on the satellite; The central unit CU of an on-board access network device.

4. The method according to any one of claims 1 to 3, characterized in that, The first device storing the paging message includes: When the first device will cover the tracking area indicated by the tracking area information in the future, the first device stores the paging message; or When the first device is the anchor device of the terminal, the first device stores the paging message.

5. The method according to claim 4, wherein When the first device will cover the tracking area in the future, the first device storing the paging message includes: When the first device is a store-and-forward type device and will cover the tracking area indicated by the tracking area information in the future, the first device stores the paging message.

6. The method according to any one of claims 1 to 5, characterized in that The method further includes: When the first device receives a duplicate of the paging message, discarding the duplicate paging message.

7. The method according to any one of claims 1 to 6, characterized in that, The paging message further carries one or more of the following: Paging indication information, forwarding indication information, identification information of the anchor device; Among them, the paging indication information is used to indicate store-and-forward. The forwarding indication information is used to indicate whether it is allowed to forward the paging message to other devices.

8. The method according to any one of claims 1 to 7, characterized in that, The first device receiving the paging message includes one or more of the following: The first device receives the paging message sent by a core network element. The first device receives the paging message sent by a second device, where there is an inter-satellite link ISL between the first device and the second device.

9. A paging method, characterized in that, Including: A third device receives a paging message carrying tracking area information for assisting in paging a terminal. The third device performs a processing operation on the paging message, and the processing operation includes one or more of the following: The third device discards the paging message; The third device stores the paging message; The third device forwards the paging message to a device with which there is an inter-satellite link ISL between the third device and the device.

10. The method according to claim 9, characterized in that, The third device includes any one of the following: An on-board access network device; The central unit CU of an access network device on the satellite; The central unit CU of an on-board access network device.

11. The method according to claim 9 or 10, characterized in that, The third device forwarding the paging message to a device with which there is an ISL between the third device and the device includes one or more of the following: In the case where the third device is not a store-and-forward type device, forward the paging message to a device having an ISL with the third device; In the case where the third device is a store-and-forward type device and will not cover the tracking area indicated by the tracking area information in the future, forward the paging message to a device having an ISL with the third device; In the case where the third device is not the anchor device of the terminal, forward the paging message to a device having an ISL with the third device; In the case where the paging message is allowed to be forwarded, forward the paging message to a device having an ISL with the third device.

12. The method according to any one of claims 9 to 11, characterized in that, The third device discards the paging message, including one or more of the following: In the case where the third device is not a store-and-forward type device, discard the paging message; In the case where the third device is a store-and-forward type device and will not cover the tracking area indicated by the tracking area information in the future, discard the paging message; In the case where the third device is not the anchor device of the terminal, discard the paging message; In the case where the paging message is not allowed to be forwarded and the third device will not cover the tracking area indicated by the tracking area information in the future, discard the paging message; In the case where the paging message is not allowed to be forwarded, discard the paging message; After the third device forwards the paging message, the third device discards the paging message.

13. The method according to any one of claims 9 to 12, characterized in that, The third device stores the paging message, including one or more of the following: In the case where the third device will cover the tracking area indicated by the tracking area information in the future, the third device stores the paging message; In the case where the third device is the anchor device of the terminal, the third device stores the paging message; In the case where the third device is a store-and-forward type device, the third device stores the paging message; In the case where the paging message is allowed to be forwarded, before the paging message is forwarded, the third device stores the paging message.

14. The method according to any one of claims 9 to 13, characterized in that, The paging message also carries one or more of the following: Paging indication information, forwarding indication information, identification information of the anchor device; Among them, the paging indication information is used to indicate store-and-forward; The forwarding indication information is used to indicate whether the paging message is allowed to be forwarded to other devices.

15. The method according to any one of claims 9 to 14, characterized in that The third device receiving the paging message includes at least one of the following: The third device receives the paging message sent by the core network element; The third device receives the paging message sent by another device, where there is an ISL between the third device and the other device.

16. A paging method, characterized in that, Includes: The core network element sends a paging message to one or more fourth devices, and the paging message carries tracking area information, and the tracking area information is used to assist in paging the terminal; The feeder link between the fourth device and the core network element is available.

17. The method according to claim 16, wherein The one or more fourth devices include: All or part of the devices with an available feeder link to the core network element.

18. The method according to claim 17, wherein The partial devices include at least one of the following: A device of the store-and-forward type among the devices available for the feeder link to the core network element; A device that will cover the tracking area indicated by the tracking area information among the devices available for the feeder link to the core network element; The anchor device of the terminal available for the feeder link to the core network element.

19. The method according to any one of claims 16 to 18, characterized in that, The paging message further carries one or more of the following: Paging indication information, forwarding indication information, identification information of the anchor device; Among them, the paging indication information is used to indicate store-and-forward; The forwarding indication information is used to indicate whether it is allowed to forward the paging message to other devices.

20. The method according to any one of claims 16 to 19, further characterized in that the fourth device includes any one of the following: On-board access network device; The on-board central unit CU of the access network device; The central unit CU of the on-board access network device.

21. A paging device, characterized in that, Comprising: A receiving module, configured to receive a paging message, where the paging message carries tracking area information, and the tracking area information is used to assist in paging the terminal; A storage module, configured to store the paging message; A paging module, configured to, when the first device covers the tracking area indicated by the tracking area information or the service link between the first device and the terminal is available, the first device pages the terminal in a target cell, and the target cell belongs to the tracking area indicated by the tracking area information.

22. The device according to claim 21, characterized in that, The storage module is used for: Storing the paging message when the first device will cover the tracking area indicated by the tracking area information in the future; or Storing the paging message when the first device is the anchor device of the terminal.

23. The device according to claim 21 or 22, characterized in that, The apparatus further includes: A discard module, configured to discard the repeated paging message when the first device receives the repeated paging message.

24. A paging device, characterized in that, Comprising: A receiving module, configured to receive a paging message, where the paging message carries tracking area information, and the tracking area information is used to assist in paging the terminal; An execution module, configured to perform a processing operation on the paging message, and the processing operation includes one or more of the following: Discarding the paging message; Storing the paging message; Forwarding the paging message to a device having an inter-satellite link ISL with a third device.

25. The device according to claim 24, wherein The forwarding the paging message to a device having an ISL with the third device includes one or more of the following: Forwarding the paging message to a device having an ISL with the third device when the third device is not a device of the store-and-forward type; Forwarding the paging message to a device having an ISL with the third device when the third device is a device of the store-and-forward type and will not cover the tracking area indicated by the tracking area information in the future; Forwarding the paging message to a device having an ISL with the third device when the third device is not the anchor device of the terminal; Forwarding the paging message to a device having an ISL with the third device when the paging message is allowed to be forwarded.

26. The device according to claim 24 or 25, characterized in that, The discarding the paging message includes one or more of the following: In the case where the third device is not a store-and-forward type device, discard the paging message; In the case where the third device is a store-and-forward type device and will not cover the tracking area indicated by the tracking area information in the future, discard the paging message; In the case where the third device is not the anchor device of the terminal, discard the paging message; In the case where the paging message is not allowed to be forwarded and the third device will not cover the tracking area indicated by the tracking area information in the future, discard the paging message; In the case where the paging message is not allowed to be forwarded, discard the paging message; After the third device forwards the paging message, the third device discards the paging message.

27. The device according to any one of claims 24 to 26, characterized in that Storing the paging message includes one or more of the following: In the case where the third device will cover the tracking area indicated by the tracking area information in the future, store the paging message; In the case where the third device is the anchor device of the terminal, store the paging message; In the case where the third device is a store-and-forward type device, store the paging message; In the case where the paging message is allowed to be forwarded, store the paging message before it is forwarded.

28. A paging device, characterized in that, Includes: A sending module, configured to send a paging message to one or more fourth devices, where the paging message carries tracking area information, and the tracking area information is used to assist in paging the terminal; The feeder link between the fourth device and the core network element is available.

29. The device according to claim 28, wherein The one or more fourth devices include: All or part of the devices with an available feeder link between them and the core network element.

30. The device according to claim 29, characterized in that, The partial devices include at least one of the following: Devices of the store-and-forward type among the devices with an available feeder link between them and the core network element; Devices that will cover the tracking area indicated by the tracking area information in the future among the devices with an available feeder link between them and the core network element; The anchor device of the terminal with an available feeder link between it and the core network element.

31. A network-side device, characterized in that, Includes a processor and a memory, where the memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, it implements the steps of the paging method according to any one of claims 1 to 8, or when the program or instruction is executed by the processor, it implements the steps of the paging method according to any one of claims 9 to 15, or when the program or instruction is executed by the processor, it implements the steps of the paging method according to any one of claims 16 to 20.

32. A readable storage medium, characterized in that, A program or instruction is stored on the readable storage medium. When the program or instruction is executed by the processor, it implements the steps of the paging method according to any one of claims 1 to 8, or implements the steps of the paging method according to any one of claims 9 to 15, or implements the steps of the paging method according to any one of claims 16 to 20.

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