Method, device and related equipment for authorizing satellite access to terminal in air-space-ground scenario

Abstract

The present disclosure provides a method, apparatus, and related equipment for authorizing satellite access for a terminal in an air-space-ground scenario, relating to the field of wireless communication technology. The method is applied to network access control functions, including: receiving a terminal registration request message forwarded by a non-terrestrial access network, wherein the terminal registration request message carries satellite roaming indication information, and the satellite roaming indication information is used to indicate that the terminal supports satellite roaming capabilities; obtaining subscription data indicating that the terminal supports satellite roaming capabilities; and sending a terminal registration response message to the access network, wherein the terminal registration response message carries satellite roaming operation information. The present disclosure can transmit messages sent by user terminals back to the home network via satellite.

Description

Technical Field

[0001] The present disclosure relates to the field of wireless communication technology, and in particular to a method, apparatus, and related equipment for authorizing a terminal to access a satellite in an air-space-ground scenario. Background Art

[0002] Organizations such as the 3rd Generation Partnership Project (3GPP) and the International Mobile Telecommunications 2020 (IMT-2020) Promotion Group have conducted various types of research on roaming access scenarios. Roaming allows mobile terminals to continue using mobile communication services by accessing the roaming network when their home network is no longer covered, maintaining service continuity and improving user experience. Depending on whether data is backhauled to the home network, roaming is categorized into local breakout (LBO) and home routing (HR). As key to cross-operator network communications, inter-network roaming allows users to seamlessly connect between different operator networks. It is primarily achieved through core network roaming and access network sharing. Core network roaming uses home routing, with user data backhauled to the home network. Both roaming parties independently build and manage their networks. Access network sharing, on the other hand, enables access from multiple operators through a shared access network.

[0003] In an integrated air-space-ground network, it is common for ground operators' equipment to be unable to connect to the ground operator's access network due to network failures, natural disasters, or insufficient signal coverage in remote areas.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Summary of the Invention

[0005] The present disclosure provides a method, apparatus and related equipment for authorizing satellite access to a terminal in an air-space-ground scenario, which at least to a certain extent overcomes the problem in related technologies of being unable to connect to a terrestrial access network due to network failures, natural disasters or insufficient signal coverage in remote areas.

[0006] Other features and advantages of the present disclosure will become apparent from the following detailed description, or may be learned in part by practice of the present disclosure.

[0007] According to one aspect of the present disclosure, a method for authorizing satellite access to a terminal in an air-space-ground scenario is provided, which is applied to a network access control function, including: receiving a terminal registration request message forwarded by an access network, wherein the terminal registration request message carries satellite roaming indication information, and the satellite roaming indication information is used to indicate that the terminal supports satellite roaming capabilities; obtaining subscription data for the terminal supporting satellite roaming capabilities; and sending a terminal registration response message to the access network, wherein the terminal registration response message carries satellite roaming information.

[0008] In some exemplary embodiments of the present disclosure, based on the aforementioned scheme, obtaining the contract data of the terminal supporting satellite roaming capability includes: sending a contract data acquisition request to a unified contract management function, wherein the contract data acquisition request is used to request obtaining the contract data of the terminal supporting satellite roaming capability; and receiving the contract data of the terminal supporting satellite roaming capability returned by the unified contract management function.

[0009] In some exemplary embodiments of the present disclosure, based on the aforementioned scheme, a terminal registration response message is sent to the access network, including: if the terrestrial operator and the non-terrestrial operator independently deploy core networks, the terminal registration response message is indirectly sent to the access network of the non-terrestrial operator through the roaming interface between the core network of the non-terrestrial operator and the core network of the terrestrial operator; if the terrestrial operator and the non-terrestrial operator share an access network, the terminal registration response message is directly sent to the access network of the terrestrial operator.

[0010] In some exemplary embodiments of the present disclosure, based on the aforementioned solution, after obtaining the subscription data of the terminal supporting satellite roaming capabilities, the method further includes: storing the subscription data of the terminal supporting satellite roaming capabilities into the context information of the terminal.

[0011] In some exemplary embodiments of the present disclosure, based on the aforementioned scheme, after sending a terminal registration response message to the access network, the method further includes: sending a subscription instruction to the unified contract management function to subscribe to a service to receive notification when the contract data of the terminal supporting satellite roaming capability is modified.

[0012] According to another aspect of the present disclosure, a method for authorizing satellite access to a terminal in an air-space-ground scenario is also provided, which is applied to an access network, including: receiving a terminal registration request message sent by a terminal, the terminal registration request carrying satellite roaming indication information, and the satellite roaming indication information is used to indicate that the terminal supports satellite roaming capabilities; forwarding the terminal registration request message to a corresponding network access control function, wherein the network access control function includes a non-terrestrial core network network access control function or a terrestrial core network network access control function; receiving a terminal registration response message sent by the network access control function, and forwarding it to the terminal, the terminal registration response message carrying satellite roaming information.

[0013] In some exemplary embodiments of the present disclosure, based on the aforementioned scheme, the terminal registration request message is forwarded to the corresponding network access control function, including: if the ground operator and the non-ground operator independently deploy the core network, the terminal registration request message is forwarded to the non-ground core network network access control function; if the ground operator and the non-ground operator share the access network, the terminal registration request message is forwarded to the ground core network network access control function.

[0014] According to another aspect of the present disclosure, a method for authorizing satellite access to a terminal in an air-space-ground scenario is also provided, which is applied to a unified contract management function, including: determining the contract data of the terminal supporting satellite roaming capabilities based on a bilateral roaming agreement pre-signed between a terrestrial operator and a non-terrestrial operator; and sending the contract data to the network access control function in response to a contract data acquisition request sent by the network access control function.

[0015] According to another aspect of the present disclosure, a device for authorizing satellite access to a terminal in an air-space-ground scenario is also provided, which is applied to the network access control function, including: a first terminal registration request message receiving module, used to receive a terminal registration request message forwarded by an access network, wherein the terminal registration request message carries satellite roaming indication information, and the satellite roaming indication information is used to indicate that the terminal supports satellite roaming capabilities; a contract data acquisition module, used to obtain contract data indicating that the terminal supports satellite roaming capabilities; a terminal registration response message sending module, used to send a terminal registration response message to the access network, wherein the terminal registration response message carries satellite roaming operation information.

[0016] According to another aspect of the present disclosure, a device for authorizing satellite access to a terminal in an air-space-ground scenario is also provided, which is applied to an access network and includes: a second terminal registration request message receiving module, used to receive a terminal registration request message sent by a terminal, the terminal registration request carries satellite roaming indication information, and the satellite roaming indication information is used to indicate that the terminal supports satellite roaming capability; a terminal registration request message forwarding module, used to forward the terminal registration request message to a corresponding network access control function, wherein the network access control function includes a non-terrestrial core network network access control function or a terrestrial core network network access control function; a terminal registration response message receiving module, used to receive a terminal registration response message sent by the network access control function and forward it to the terminal, the terminal registration response message carries satellite roaming information.

[0017] According to another aspect of the present disclosure, a device for authorizing satellite access to a terminal in an air-space-ground scenario is also provided, which is applied to a unified contract management function, including: a contract data determination module, used to determine the contract data of the terminal supporting satellite roaming capabilities based on a bilateral roaming agreement pre-signed between a terrestrial operator and a non-terrestrial operator, wherein the bilateral roaming agreement includes the terminal supporting satellite roaming capabilities; a contract data sending module, used to send the contract data to the network access control function in response to a contract data acquisition request sent by the network access control function.

[0018] According to another aspect of the present disclosure, an electronic device is also provided, including: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to execute any of the above-mentioned methods for authorizing satellite access to a terminal in the air-space-ground scenario by executing the executable instructions.

[0019] According to another aspect of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the method for authorizing satellite access to a terminal in any of the above-mentioned air-space-ground scenarios is implemented.

[0020] According to another aspect of the present disclosure, a computer program product is provided, including: a computer program or instructions, which, when executed by a processor, implements any of the above-mentioned methods for authorizing satellite access to a terminal in an air-space-ground scenario.

[0021] The embodiments of the present disclosure provide a method, apparatus, and related equipment for authorizing satellite access to a terminal in an air-space-ground scenario. By receiving a terminal registration request message indicating that the terminal supports satellite roaming capabilities, the contract data access network obtains the terminal's support for satellite roaming capabilities. After receiving the terminal registration response message indicating that the terminal supports satellite roaming capabilities, the access network can transmit the message sent by the terminal back to the ground access network via satellite when the terminal cannot connect to the ground access network, ensuring that the terminal can still maintain a communication connection when the ground network is unavailable, thereby ensuring business continuity and reliability.

[0022] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0024] Figure 1 A schematic diagram illustrating an exemplary application system architecture of a method for authorizing satellite access to a terminal in an air-space-ground scenario according to an embodiment of the present disclosure is shown;

[0025] Figure 2 A schematic diagram showing a method of transmitting data back to a home network via a satellite core network according to an embodiment of the present disclosure is shown;

[0026] Figure 3 A schematic diagram showing a method of directly transmitting data back to a home network according to an embodiment of the present disclosure is shown;

[0027] Figure 4 A schematic diagram illustrating a method for authorizing satellite access to a terminal in an air-space-ground scenario applied to a network access control function according to an embodiment of the present disclosure is shown;

[0028] Figure 5 A schematic diagram illustrating a method for authorizing satellite access to a terminal in an air-to-ground scenario in a non-terrestrial access network according to an embodiment of the present disclosure is shown;

[0029] Figure 6 A schematic diagram illustrating a method for authorizing satellite access to a terminal in an air-space-ground scenario applied to a unified contract management function according to an embodiment of the present disclosure is shown;

[0030] Figure 7 A schematic diagram illustrating an interaction method for authorizing a terminal to access a satellite in an air-space-ground scenario according to an embodiment of the present disclosure is shown;

[0031] Figure 8A schematic diagram of an apparatus for authorizing satellite access to a terminal in an air-space-ground scenario applied to a network access control function according to an embodiment of the present disclosure is shown;

[0032] Figure 9 A schematic diagram of an apparatus for authorizing satellite access to a terminal in an air-to-ground scenario in a non-terrestrial access network according to an embodiment of the present disclosure is shown;

[0033] Figure 10 A schematic diagram of an apparatus for authorizing satellite access to a terminal in an air-space-ground scenario for unified contract management functions according to an embodiment of the present disclosure is shown;

[0034] Figure 11 A schematic diagram of an electronic device illustrating a method for authorizing a terminal to access a satellite using an air-space-ground scenario in an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0035] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0036] In addition, the described features, structures or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, well-known methods, devices, implementations or operations are not shown or described in detail to avoid blurring various aspects of the present disclosure.

[0037] The flowcharts shown in the accompanying drawings are for illustrative purposes only and do not necessarily include all contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may be decomposed, while others may be combined or partially combined. Therefore, the actual execution order may vary depending on the actual situation.

[0038] like Figure 1 As shown, the system architecture includes a terminal device 101, a network 102 and a network side device 103.

[0039] The network 102 is a medium used to provide a communication link between the terminal device 101 and the network-side device 103, and can be a wired network or a wireless network.

[0040] Optionally, the wireless network or wired network described above uses standard communication technologies and / or protocols. The network is typically the Internet, but may be any network, including but not limited to a local area network (LAN), a metropolitan area network (MAN), a wide area network (WAN), a mobile, wired or wireless network, a private network, or any combination of a virtual private network. In some embodiments, technologies and / or formats including Hypertext Markup Language (HTML) and Extensible Markup Language (XML) are used to represent data exchanged over the network. In addition, conventional encryption technologies such as Secure Socket Layer (SSL), Transport Layer Security (TLS), Virtual Private Network (VPN), and Internet Protocol Security (IPSec) may be used to encrypt all or some links. In other embodiments, customized and / or dedicated data communication technologies may be used to replace or supplement the above-mentioned data communication technologies.

[0041] Optionally, the terminal device in the embodiment of the present disclosure may also be referred to as UE (User Equipment). In a specific implementation, the terminal device may be a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a mobile Internet device (MID), a wearable device or a vehicle-mounted device, etc. It should be noted that the specific type of the terminal device is not limited in the embodiment of the present invention.

[0042] The network-side device may be a base station, a relay, or an access point. The base station may be a 5G or later version base station (e.g., a 5G NR NB), or a base station in other communication systems (e.g., an eNB base station). It should be noted that the specific type of the network-side device is not limited in the embodiments of the present disclosure.

[0043] Those skilled in the art will know that Figure 1The number of terminals, networks, and network-side devices in the figure is merely illustrative, and any number of terminals, networks, and network-side devices may be provided according to actual needs. This disclosure does not limit this.

[0044] Under the above system architecture, an embodiment of the present disclosure provides a method for authorizing satellite access to a terminal in an air-space-ground scenario, which can be executed by any electronic device with computing and processing capabilities.

[0045] In some embodiments, the method for authorizing satellite access to a terminal in an air-space-ground scenario provided in the embodiments of the present disclosure can be executed by a terminal device of the above-mentioned system architecture; in other embodiments, the method for authorizing satellite access to a terminal in an air-space-ground scenario provided in the embodiments of the present disclosure can be executed by a server in the above-mentioned system architecture; in other embodiments, the method for authorizing satellite access to a terminal in an air-space-ground scenario provided in the embodiments of the present disclosure can be implemented by the terminal device and server in the above-mentioned system architecture through interaction.

[0046] In order to better describe the embodiments of the present disclosure, the following professional terms are explained:

[0047] Access and Mobility Management Function (AMF): Mainly responsible for control plane functions, including access control, mobility management, and location tracking of user equipment (UE).

[0048] Unified Data Management (UDM): A network function responsible for user data management and processing. It integrates functions such as the storage and management of user contract information and user authentication.

[0049] First, international standards organizations such as 3GPP and the International Telecommunication Union (ITU) have currently defined roaming access satellite communication scenarios, but specific research plans have not yet been discussed. Therefore, the embodiments of the present disclosure pre-embed relevant technical solutions for this scenario.

[0050] In modern communications networks, terrestrial operator user equipment may be unable to connect to the terrestrial access network due to natural disasters, infrastructure damage, or insufficient network coverage in remote areas. In this case, roaming access through non-terrestrial operators becomes an important solution. Its core purpose is to ensure that devices can still maintain communication connections when the terrestrial network is unavailable, thereby ensuring business continuity and reliability.

[0051] In order to better understand the solution in the embodiment of the present disclosure, the embodiment of the present disclosure can introduce non-terrestrial operators by taking satellite operators as an example. Specifically, the embodiment of the present disclosure can determine whether the satellite supports two operating modes, namely, supporting satellite operators / and terrestrial operators. When the access network selects the network access control function, it needs to judge based on the policy whether the user data falls back to the home network indirectly through the satellite core network or falls back directly to the terrestrial operator core network. Specifically, one is as follows Figure 2 As shown in FIG, UE roams to access the satellite network, and data is transmitted back to the home network through the satellite core network. In more detail, in this case, the ground operator and the satellite operator independently deploy core networks. After a roaming agreement is signed between the ground operator and the satellite operator, when the ground operator's user terminal equipment detects that it cannot connect to the local ground access network, the satellite roaming access mechanism is automatically triggered. The satellite operator provides a communication channel for the equipment through its wide coverage and long transmission distance. By roaming to the satellite access network, the user equipment can upload data to the satellite. After judgment by the wireless access network, the user data first falls back to the satellite operator's core network and is indirectly transmitted back to the ground operator network through a secure proxy. Another example is Figure 3 As shown in the figure, the ground operator and the satellite operator share the access network, the user accesses the satellite network, and the data is directly transmitted back to the home network. Specifically, the ground operator and the satellite operator share the access network, the ground operator's user equipment accesses the satellite, and the wireless access network determines that the satellite can be directly connected to the ground operator's core network. The user data can then be directly transferred back to the home network, realizing access network sharing.

[0052] Figure 4 A schematic diagram of a method for authorizing satellite access to a terminal in an air-space-ground scenario according to an embodiment of the present disclosure is shown. The method is applied to a network access control function and includes the following steps:

[0053] S402: Receive a terminal registration request message forwarded by an access network, wherein the terminal registration request message carries satellite roaming indication information, and the satellite roaming indication information is used to indicate that the terminal supports satellite roaming capability.

[0054] It should be noted that the access network in the embodiments of the present disclosure connects end-user devices to the core network or the broader internet. The access network can be considered the "last mile" or "first mile" between user-end devices (such as computers, mobile phones, and smart home devices) and the service provider's infrastructure. Its primary purpose is to provide an efficient means for transmitting information such as voice, video, and data. Furthermore, the terminal registration request message in the embodiments of the present disclosure refers to a request message sent by a user terminal (such as a satellite phone, portable satellite communication device, or a fixed terminal installed in a vehicle, vessel, or aircraft) to the network to register its information with the network and obtain service. Furthermore, the satellite roaming indication message in the embodiments of the present disclosure refers to the operational instructions or information required when a user terminal (such as a satellite phone or other type of satellite communication device) moves from its home service area to a visitor service area. This process is similar to the roaming mechanism in terrestrial cellular networks and is designed to ensure that the terminal can maintain communication capabilities in different satellite coverage areas or the service areas of different satellite operators. Furthermore, satellite roaming allows users to maintain connectivity even outside the coverage area of ​​their home network.

[0055] S404: Obtain the contract data of the terminal supporting satellite roaming capability.

[0056] It should be noted that the contract data in the embodiments of the present disclosure refers to the specific terms and related information included in the service agreement reached between the user and the service provider (usually the satellite operator to which the user belongs). For example, the contract data is shown in Table 1 below:

[0057] Table 1

[0058]

[0059] S406: Send a terminal registration response message to the access network, wherein the terminal registration response message carries satellite roaming information.

[0060] It should be noted that the terminal registration response message in the embodiment of the present disclosure refers to the ability of the authorized terminal to access the satellite network through roaming, which is equivalent to the terminal equipment used by the user (such as satellite phone, portable satellite communication equipment, etc.) being able to use the roaming agreement signed with the home network to connect to the local satellite or ground station and continue to enjoy communication services when leaving its home service area and entering the coverage area of ​​other satellite networks.

[0061] The method for authorizing satellite access to a terminal in an air-space-ground scenario provided in the embodiments of the present disclosure first receives a terminal registration request message forwarded by an access network, indicating that the terminal supports satellite roaming capabilities; then obtains subscription data indicating that the terminal supports satellite roaming capabilities; and finally, sends a terminal registration response message to the access network, indicating that the terminal supports satellite roaming capabilities. Compared to the problem in related technologies where connection to a terrestrial access network is impossible due to network failures, natural disasters, or insufficient signal coverage in remote areas, the embodiments of the present disclosure roam through satellite network access by receiving and obtaining subscription data indicating that the terminal supports satellite roaming capabilities. When the terminal is unable to connect to the terrestrial access network, the messages sent by the terminal can be transmitted back to the home network through the access network. Users can seamlessly switch between different environments without changing devices or operators, maintaining communication continuity.

[0062] In some embodiments, the embodiments of the present disclosure obtain contract data indicating that the terminal supports satellite roaming capabilities, including: sending a contract data acquisition request to a unified contract management function, wherein the contract data acquisition request is used to request the acquisition of contract data indicating that the terminal supports satellite roaming capabilities; and receiving contract data indicating that the terminal supports satellite roaming capabilities returned by the unified contract management function. Specifically, the contract data returned by the unified contract management function in the embodiments of the present disclosure includes relevant information on whether the terminal supports satellite roaming, so that the network can confirm whether the terminal has the authority to perform satellite roaming operations and ensure that the terminal has satellite roaming capabilities. Moreover, by obtaining the contract data, the terminal can directly use this information to interact with the target network (such as the visited satellite network) without having to request complete contract data from the home network each time, thereby reducing the number of signaling interactions and network latency. The terminal can quickly and securely access the satellite network and support roaming operations.

[0063] In some embodiments, the present disclosure sends a terminal registration response message to an access network. The method includes: if the terrestrial operator and the non-terrestrial operator independently deploy core networks, indirectly sending the terminal registration response message to the non-terrestrial operator's access network via a roaming interface between the non-terrestrial operator's core network and the terrestrial operator's core network; if the terrestrial operator and the non-terrestrial operator share an access network, directly sending the terminal registration response message to the terrestrial operator's access network. Specifically, in the present disclosure, the non-terrestrial operator (for example, a satellite operator) deploys an independent core network. When a terrestrial operator user accesses a satellite via roaming, user data must first fall back to the satellite core network. The user data then connects to the terrestrial operator via a roaming interface between the terrestrial core network and the satellite core network, and indirectly sending the terminal registration response message to the satellite operator's access network via the roaming interface. If the terrestrial operator and the satellite operator share an access network, the method falls back directly to the terrestrial operator. The choice of operating model depends on the specific application scenario and technical and economic considerations. For efficient and low-latency service experience, direct communication over a shared access network may be a better option. However, for situations where a high degree of independence and control is required, deploying an independent core network and communicating indirectly via a roaming interface provides greater flexibility.

[0064] In some embodiments, the disclosed embodiments store the subscription data of the terminal supporting satellite roaming capabilities in the context information of the terminal, which can be directly used when the terminal attempts to access the network, avoiding the need to re-acquire this data from the home network or core network every time. In the roaming scenario, the terminal can directly provide the necessary subscription information to the visited network, thereby reducing the signaling interaction with the home network, speeding up the registration and authentication process, significantly improving the efficiency, flexibility and security of the communication system, and reducing dependence on network resources.

[0065] In some embodiments, after sending a terminal registration response message to the access network, the method for authorizing satellite access to the terminal in the air-space-ground scenario in the embodiments of the present disclosure further includes: sending a subscription instruction to the unified contract management function to subscribe to a service for receiving notifications when the contract data supporting the satellite roaming capability of the terminal is modified. Specifically, the embodiments of the present disclosure receive notifications when the contract data supporting the satellite roaming capability of the terminal is modified by subscribing to the service. When the contract data supporting satellite roaming operations of the terminal is modified (for example, the user's roaming rights are enabled, disabled, or updated), the subscriber can immediately receive a notification, so that the network can quickly update the capability status of the terminal and ensure that the terminal always uses the latest contract data for communication; in addition, the modification of the contract data may involve the update of security parameters (such as encryption keys or access control lists). Through the subscription notification mechanism, the network can ensure that the terminal always uses the latest security policies to avoid security vulnerabilities caused by outdated security parameters.

[0066] Figure 5A schematic diagram of a method for authorizing satellite access to a terminal in an air-space-ground scenario according to an embodiment of the present disclosure is shown. The method is applied to an access network and includes the following steps:

[0067] S502: Receive a terminal registration request message sent by a terminal. The terminal registration request carries satellite roaming operation indication information. The satellite roaming operation indication information is used to indicate that the terminal supports satellite roaming capability.

[0068] S504: Forward the terminal registration request message to a corresponding network access control function, wherein the network access control function includes a non-terrestrial core network network access control function or a terrestrial core network network access control function.

[0069] S506: Receive a terminal registration response message sent by the network access control function and forward it to the terminal. The terminal registration response message carries satellite roaming information.

[0070] In some embodiments, the method for authorizing satellite access to a terminal in a space-to-ground scenario in the disclosed embodiments includes first receiving a terminal registration request message sent by the terminal; then forwarding the terminal registration request message to a corresponding network access control function; and finally receiving a terminal registration response message carrying satellite roaming information sent by the network access control function and forwarding it to the terminal. Compared to the problem of being unable to connect to a terrestrial access network due to network failures, natural disasters, or insufficient signal coverage in remote areas in the related art, the disclosed embodiments receive a terminal registration request message carrying an indication that the terminal supports satellite roaming capabilities and forward the terminal registration request to a corresponding network access control function. The corresponding network access control function determines, based on the satellite roaming indication, that the terminal can be authorized to roam to a satellite node. After receiving the terminal registration response message indicating that the terminal supports satellite roaming, the access network can transmit the terminal's message back to the terrestrial access network via a non-terrestrial core network network access control function if the terminal is unable to connect to the terrestrial access network. Furthermore, by roaming into the satellite network, users can seamlessly switch between different environments without changing devices or operators, maintaining communication continuity.

[0071] In some embodiments, the disclosed embodiments forward the terminal registration request message to the corresponding network access control function, including: if the terrestrial operator and the non-terrestrial operator independently deploy the core network, forward the terminal registration request message to the non-terrestrial core network network access control function; if the terrestrial operator and the non-terrestrial operator share the access network, forward the terminal registration request message to the terrestrial core network network access control function. Specifically, which operation mode is selected in the disclosed embodiments depends on the specific business needs, technical conditions and the planning of the two parties. The method of independently deploying the core network and indirectly communicating through the roaming interface is more suitable for operators who want to maintain a high degree of independence and control, although this method may result in higher latency, complexity and maintenance costs; while the method of direct communication over a shared access network provides lower latency, a simplified network architecture and more efficient resource utilization, and is a preferred option for operators who pursue efficient, low-cost solutions and can accept a certain degree of resource sharing.

[0072] Figure 6 A schematic diagram of a method for authorizing satellite access to a terminal in an air-space-ground scenario according to an embodiment of the present disclosure is shown. The method is applied to a unified contract management function and includes the following steps:

[0073] S602: Determine the contract data of the terminal supporting satellite roaming capability based on the bilateral roaming agreement pre-signed between the terrestrial operator and the non-terrestrial operator.

[0074] S604: In response to the subscription data acquisition request sent by the network access control function, the subscription data is sent to the network access control function.

[0075] In some embodiments, the method for authorizing satellite access to a terminal in a space-to-ground scenario in the disclosed embodiments first determines, based on a pre-signed bilateral roaming agreement between a terrestrial operator and a non-terrestrial operator, subscription data indicating that the terminal supports satellite roaming capabilities; then, in response to a subscription data acquisition request sent by a network access control function, sends the subscription data to the network access control function. Compared to the problem of being unable to connect to a terrestrial access network due to network failures, natural disasters, or insufficient signal coverage in remote areas in the related art, the disclosed embodiments determine, based on a pre-signed bilateral roaming agreement between a terrestrial operator and a non-terrestrial operator, subscription data indicating that the terminal supports satellite roaming capabilities, and sends the subscription data to the network access control function in response to a subscription data acquisition request sent by the network access control function. This facilitates the subsequent non-terrestrial access network of the non-terrestrial operator receiving a terminal registration response message indicating that the terminal supports satellite roaming capabilities. When the terminal is unable to connect to the terrestrial access network, the non-terrestrial access network can then roam to access a satellite network. The terminal can then transmit the message sent by the terminal back to the terrestrial access network via the non-terrestrial access network, allowing users to seamlessly switch between different environments without changing devices or operators, maintaining communication continuity.

[0076] In some embodiments, after the embodiment of the present disclosure sends the contract data of the terminal supporting satellite roaming capability to the network access control function, the method of authorizing satellite access to the terminal in the air-space-ground scenario in the embodiment of the present disclosure also includes: receiving a subscription instruction sent by the network access control function, wherein the subscription instruction is used to subscribe to a service for receiving notification when the contract data of the terminal supporting satellite roaming capability is modified.

[0077] In some embodiments, as Figure 7 As shown, the interactive process of the method for authorizing satellite access to a terminal in an air-space-ground scenario in the embodiment of the present disclosure includes:

[0078] S702, based on Figure 2 In the satellite roaming access scenario, a bilateral roaming agreement is signed between the ground operator and the satellite operator network, which allows user terminals of the ground operator network to roam into the satellite network. Specifically, a contract data entry for satellite roaming operations is added to the contract data in the unified contract management function to instruct the user to roam into the satellite node. The user data falls back to the home network directly or indirectly. The operator can modify or delete the user subscription rights for the satellite roaming function in the contract data in the UDM network element at any time, or revoke the user subscription rights that support roaming access to the satellite.

[0079] S704, the user terminal of the ground operator sends a terminal registration request to the satellite: the terminal registration request message carries indication information, which includes a satellite roaming indication. According to the roaming agreement signed by the ground operator and the satellite operator, the ground operator user is allowed to roam and access the satellite core network.

[0080] S706, select a network access control function based on the information carried in the registration request message. If Figure 2 In the scenario where satellite operators independently deploy core networks and ground operator users access satellites through roaming, user data should first fall back to the satellite core network and connect to the ground operator through the roaming interface between core networks. In this case, the satellite core network network access control function should be selected; if based on Figure 3 In the scenario, the satellite is shared by ground operators and satellite operators, and the data can be accessed through Figure 2 In the scenario of indirect fallback to the home network or Figure 3 In the scenario of falling back directly to the home network, the network access control function of the ground core network is selected based on deployment or network policy.

[0081] S708: The access network sends a terminal registration request message to the network access control function.

[0082] S710 , after the network access control function successfully completes the registration operation and there is no subscription data about the terminal, the network access control function obtains subscription data about the terminal supporting satellite roaming capability.

[0083] S712: The network access control function obtains the terminal's subscription data regarding satellite roaming support from the unified subscription management function and stores the data as part of the UE context information.

[0084] S714, after receiving a successful response, the network access control function subscribes to a service for receiving notifications when the contract data is modified through a subscription instruction.

[0085] S716: The network access control function determines to authorize the terminal to roam and access the satellite capability based on the satellite roaming capability subscribed by the UE.

[0086] S718: The network access control function sends a terminal registration response message to the access network.

[0087] In some embodiments, the embodiments of the present disclosure determine authorization through network access control functions to support roaming access to satellite networks, thereby supplementing roaming satellite access to different networks and further improving the integrated air-ground-space system.

[0088] Based on the same inventive concept, the presently disclosed embodiments further provide an apparatus for authorizing satellite access to a terminal in an air-space-ground scenario, as shown in the following embodiment. Because the principles of this apparatus embodiment are similar to those of the aforementioned method embodiment, the implementation of this apparatus embodiment can be referenced to the implementation of the aforementioned method embodiment, and any repetitions will not be repeated.

[0089] Figure 8 A schematic diagram of a device for authorizing satellite access to a terminal in an air-space-ground scenario according to an embodiment of the present disclosure is shown. The device is applied to a network access control function and includes:

[0090] a first terminal registration request message receiving module 801, configured to receive a terminal registration request message forwarded by an access network, wherein the terminal registration request message carries satellite roaming indication information, and the satellite roaming indication information is used to indicate that the terminal supports satellite roaming capability;

[0091] The subscription data acquisition module 802 is used to obtain subscription data of the terminal supporting satellite roaming operations;

[0092] The terminal registration response message sending module 803 is configured to send a terminal registration response message to the access network, wherein the terminal registration response message carries satellite roaming operation information.

[0093] An embodiment of the present disclosure provides an apparatus for authorizing satellite access to a terminal in an air-space-ground scenario. The apparatus receives a terminal registration request message forwarded by an access network and indicating that the terminal supports satellite roaming capabilities through a first terminal registration request message receiving module; obtains contract data indicating that the terminal supports satellite roaming capabilities through a contract data acquisition module; and sends a terminal registration response message indicating that the terminal supports satellite roaming to the access network through a terminal registration response message sending module. Compared to the problem in related arts where connection to a terrestrial access network is impossible due to network failures, natural disasters, or insufficient signal coverage in remote areas, the embodiment of the present disclosure roams into a satellite network by receiving and obtaining contract data indicating that the terminal supports satellite roaming capabilities. When the terminal cannot connect to the terrestrial access network, the terminal can transmit messages sent by the terminal back to the home network through the access network. Users can seamlessly switch between different environments without changing devices or operators, maintaining communication continuity.

[0094] In some embodiments, the contract data acquisition module in the embodiments of the present disclosure is also used to send a contract data acquisition request to the unified contract management function, wherein the contract data acquisition request is used to request the acquisition of contract data of the terminal supporting satellite roaming capabilities; and receive the contract data of the terminal supporting satellite roaming capabilities returned by the unified contract management function.

[0095] In some embodiments, the terminal registration response message sending module in the embodiments of the present disclosure is also used to send the terminal registration response message indirectly to the access network of the non-terrestrial operator through the roaming interface between the core network of the non-terrestrial operator and the core network of the terrestrial operator if the terrestrial operator and the non-terrestrial operator independently deploy core networks; if the terrestrial operator and the non-terrestrial operator share the access network, send the terminal registration response message directly to the access network of the terrestrial operator.

[0096] In some embodiments, the device for authorizing satellite access to a terminal in an air-space-ground scenario in the embodiments of the present disclosure further includes: a storage module for storing the contract data of the terminal supporting satellite roaming capabilities in the context information of the terminal after obtaining the contract data of the terminal supporting satellite roaming capabilities.

[0097] In some embodiments, the device for authorizing satellite access to the terminal in the air-space-ground scenario in the embodiments of the present disclosure also includes: a subscription instruction module, which is used to send a subscription instruction to the unified contract management function after sending a terminal registration response message to the access network, and subscribe to a service to receive notification when the contract data of the satellite roaming capability supported by the subscribed terminal is modified.

[0098] Figure 9 A schematic diagram of a device for authorizing satellite access to a terminal in an air-space-ground scenario according to an embodiment of the present disclosure is shown. The device is applied to an access network and includes:

[0099] The second terminal registration request message receiving module 901 is configured to receive a terminal registration request message sent by a terminal, where the terminal registration request carries satellite roaming indication information, and the satellite roaming indication information is used to indicate that the terminal supports satellite roaming capability;

[0100] The terminal registration request message forwarding module 902 is configured to forward the terminal registration request message to a corresponding network access control function, wherein the network access control function includes a non-terrestrial core network network access control function or a terrestrial core network network access control function;

[0101] The terminal registration response message receiving module 903 is configured to receive a terminal registration response message sent by the network access control function and forward the message to the terminal. The terminal registration response message carries satellite roaming information.

[0102] In some embodiments, the device for authorizing satellite access to the terminal in the air-space-ground scenario in the embodiments of the present disclosure receives a terminal registration request message sent by the terminal through a second terminal registration request message receiving module; forwards the terminal registration request message to the corresponding network access control function through a terminal registration request message forwarding module; receives a terminal registration response message sent by the network access control function through a terminal registration response message receiving module, and forwards it to the terminal, wherein the terminal registration response message carries satellite roaming information. Compared with the problem in related arts of being unable to connect to the terrestrial access network due to network failure, natural disasters or insufficient signal coverage in remote areas, the embodiment of the present disclosure receives a terminal registration request message carrying an indication that the terminal supports satellite roaming capability, and forwards the terminal registration request to the corresponding network access control function. The corresponding network access control function decides, based on the satellite roaming indication, that the terminal can be authorized to roam and access the satellite node. After the access network receives the terminal registration response message indicating that the terminal supports satellite roaming, when the terminal cannot connect to the terrestrial access network, the message sent by the terminal can be transmitted back to the terrestrial access network through the non-terrestrial core network network access control function. Moreover, by roaming to access the satellite network, users can seamlessly switch between different environments without changing equipment or operators, thereby maintaining communication continuity.

[0103] In some embodiments, the terminal registration request message forwarding module in the embodiments of the present disclosure is also used to forward the terminal registration request message to the network access control function of the non-ground core network if the ground operator and the non-ground operator independently deploy the core network; if the ground operator and the non-ground operator share the access network, the terminal registration request message is forwarded to the network access control function of the ground core network.

[0104] Figure 10 A schematic diagram of an apparatus for authorizing satellite access to a terminal in an air-space-ground scenario according to an embodiment of the present disclosure is shown. The apparatus is applied to a unified contract management function and includes:

[0105] The subscription data determination module 1001 is used to determine the subscription data of the terminal supporting satellite roaming capability based on the bilateral roaming agreement pre-signed between the terrestrial operator and the non-terrestrial operator;

[0106] The contract data sending module 1002 is used to send the contract data to the network access control function in response to the contract data acquisition request sent by the network access control function.

[0107] In some embodiments, the apparatus for authorizing satellite access to a terminal in an air-space-ground scenario in the embodiments of the present disclosure determines, through a subscription data determination module, subscription data indicating that the terminal supports satellite roaming capabilities based on a pre-signed bilateral roaming agreement between a terrestrial operator and a non-terrestrial operator, wherein the bilateral roaming agreement includes the terminal's support for satellite roaming capabilities; and transmits, through a subscription data transmission module, subscription data to a network access control function in response to a subscription data acquisition request sent by a network access control function. Compared to the problem of being unable to connect to a terrestrial access network due to network failures, natural disasters, or insufficient signal coverage in remote areas in the related art, the embodiments of the present disclosure determine subscription data indicating that the terminal supports satellite roaming capabilities based on a pre-signed bilateral roaming agreement between a terrestrial operator and a non-terrestrial operator, and transmits the subscription data to the network access control function in response to a subscription data acquisition request sent by the network access control function. This facilitates subsequent access networks receiving a terminal registration response message indicating that the terminal supports satellite roaming capabilities. If the terminal is unable to connect to the terrestrial access network, the terminal can transmit the message sent by the terminal back to the terrestrial access network via the roaming access satellite network. This allows users to seamlessly switch between different environments without changing devices or operators, maintaining communication continuity.

[0108] Those skilled in the art will appreciate that various aspects of the present disclosure may be implemented as systems, methods, or program products. Therefore, various aspects of the present disclosure may be implemented in the following forms: entirely in hardware, entirely in software (including firmware, microcode, etc.), or in a combination of hardware and software, collectively referred to herein as "circuits," "modules," or "systems."

[0109] Based on the same inventive concept, an embodiment of the present disclosure further provides an electronic device, comprising: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to execute any of the aforementioned methods for authorizing satellite access to a terminal in a space-air-ground scenario by executing the executable instructions. Because the principles for solving the problem in this electronic device embodiment are similar to those in the aforementioned method embodiment, the implementation of this electronic device embodiment may refer to the implementation of the aforementioned method embodiment, and any repetitive details will not be repeated.

[0110] Refer to the following Figure 111100 according to this embodiment of the present disclosure will be described. Figure 11 The electronic device 1100 shown is merely an example and should not limit the functions and scope of use of the embodiments of the present disclosure.

[0111] like Figure 11 As shown, electronic device 1100 is implemented as a general-purpose computing device. Components of electronic device 1100 may include, but are not limited to, the aforementioned at least one processing unit 1101, the aforementioned at least one storage unit 1102, and a bus 1103 connecting various system components (including storage unit 1102 and processing unit 1101).

[0112] The storage unit stores program codes, which can be executed by the processing unit 1101, so that the processing unit 1101 executes the steps according to various exemplary embodiments of the present disclosure described in the above “Exemplary Method” section of this specification.

[0113] In some embodiments, when the electronic device is used to control the method for authorizing satellite access to a terminal in the above-mentioned air-ground scenario of the present disclosure, the processing unit 1101 may perform the following steps of the above-mentioned method embodiment:

[0114] Receive a terminal registration request message forwarded by the access network, wherein the terminal registration request message carries satellite roaming indication information, and the satellite roaming indication information is used to indicate that the terminal supports satellite roaming capabilities; obtain contract data indicating that the terminal supports satellite roaming capabilities; and send a terminal registration response message to the access network, wherein the terminal registration response message carries satellite roaming information.

[0115] The storage unit 1102 may include a readable medium in the form of a volatile storage unit, such as a random access memory unit (RAM) 11021 and / or a cache memory unit 11022 , and may further include a read-only memory unit (ROM) 11023 .

[0116] The storage unit 1102 may also include a program / utility 11024 having a set (at least one) of program modules 11025, such program modules 11025 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0117] The bus 1103 may represent one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

[0118] Electronic device 1100 can also communicate with one or more external devices 1104 (e.g., a keyboard, pointing device, Bluetooth device, etc.), one or more devices that enable a user to interact with electronic device 1100, and / or any device that enables electronic device 1100 to communicate with one or more other computing devices (e.g., a router, modem, etc.). This communication can occur via input / output (I / O) interface 1105. Furthermore, electronic device 1100 can communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network such as the Internet) via network adapter 1106. As shown, network adapter 1106 communicates with other modules of electronic device 1100 via bus 1103. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with electronic device 1100, including but not limited to microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0119] Through the description of the above embodiments, it will be readily understood by those skilled in the art that the example embodiments described herein can be implemented via software or via a combination of software and necessary hardware. Therefore, the technical solutions according to the embodiments of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, or mobile hard drive) or on a network and includes several instructions for enabling a computing device (such as a personal computer, server, terminal device, or network device) to execute the methods according to the embodiments of the present disclosure.

[0120] Based on the same inventive concept, embodiments of the present disclosure also provide a computer-readable storage medium storing a computer program. When executed by a processor, the computer program implements any of the aforementioned methods for granting satellite access to a terminal in a space-to-ground scenario. Because the principles underlying the problems solved by this computer-readable storage medium embodiment are similar to those of the aforementioned method embodiment, the implementation of this computer-readable storage medium embodiment can be referenced to the implementation of the aforementioned method embodiment, and any repetitive details will be omitted.

[0121] More specific examples of computer-readable storage media in the present disclosure may include, but are not limited to, an electrical connection having one or more conductors, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), optical fibers, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0122] In the present disclosure, a computer-readable storage medium may include a data signal propagated in baseband or as part of a carrier wave, which carries readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium that can transmit, propagate, or transfer a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0123] Alternatively, the program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination thereof.

[0124] In a specific implementation, the program code for performing the operations of the present disclosure may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, and conventional procedural programming languages ​​such as C or similar programming languages. The program code may be executed entirely on the user's computing device, partially on the user's device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0125] Based on the same inventive concept, embodiments of the present disclosure also provide a computer program product, including a computer program or instructions. When executed by a processor, the computer program or instructions implement the method for authorizing satellite access to a terminal in a space-to-ground scenario described in any of the above-described method embodiments. Because the principles for solving the problems in this computer program product embodiment are similar to those in the above-described method embodiments, the implementation of this computer program product embodiment can be referenced to the implementation of the above-described method embodiments, and any repetitive details will not be repeated.

[0126] It should be noted that although several modules or units of the device for action execution are mentioned in the detailed description above, this division is not mandatory. In fact, according to the embodiments of the present disclosure, the features and functions of two or more modules or units described above can be concretized in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided into multiple modules or units to be concretized.

[0127] Furthermore, although the steps of the method of the present disclosure are described in a particular order in the accompanying drawings, this does not require or imply that the steps must be performed in this particular order, or that all steps shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps.

[0128] Through the description of the above embodiments, it will be readily understood by those skilled in the art that the example embodiments described herein can be implemented via software or via a combination of software and necessary hardware. Therefore, the technical solutions according to the embodiments of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, or mobile hard drive) or on a network and includes several instructions for enabling a computing device (such as a personal computer, server, mobile terminal, or network device) to execute the methods according to the embodiments of the present disclosure.

[0129] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

Claims

1. A method for authorizing satellite access to a terminal in an air-space-ground scenario, characterized in that: Applied to network access control functions, including: receiving a terminal registration request message forwarded by an access network, wherein the terminal registration request message carries satellite roaming indication information, where the satellite roaming indication information is used to indicate that the terminal supports satellite roaming capability; Acquiring subscription data indicating that the terminal supports satellite roaming capabilities, wherein the subscription data is determined based on a bilateral roaming agreement pre-signed between a terrestrial operator and a non-terrestrial operator; Sending a terminal registration response message to the access network, wherein the terminal registration response message carries satellite roaming information; Sending a terminal registration response message to the access network includes: if the terrestrial operator and the non-terrestrial operator independently deploy core networks, indirectly sending the terminal registration response message to the access network of the non-terrestrial operator through the roaming interface between the core network of the non-terrestrial operator and the core network of the terrestrial operator; if the terrestrial operator and the non-terrestrial operator share an access network, directly sending the terminal registration response message to the access network of the terrestrial operator.

2. The method for authorizing a terminal to access a satellite in an air-space-ground scenario according to claim 1, characterized in that: Obtaining the subscription data of the terminal supporting satellite roaming capability, including: Sending a subscription data acquisition request to the unified subscription management function, wherein the subscription data acquisition request is used to request to obtain subscription data of the terminal supporting satellite roaming capability; Receive the subscription data of the terminal supporting satellite roaming capability returned by the unified subscription management function.

3. The method for authorizing a terminal to access a satellite in an air-space-ground scenario according to claim 1, characterized in that: After obtaining the subscription data indicating that the terminal supports satellite roaming capabilities, the method further includes: The subscription data indicating that the terminal supports satellite roaming capability is stored in the context information of the terminal.

4. The method for authorizing a terminal to access a satellite in an air-space-ground scenario according to claim 2, characterized in that: After sending the terminal registration response message to the access network, the method further includes: A subscription instruction is sent to the unified contract management function to subscribe to a service for receiving a notification when the contract data of the terminal supporting satellite roaming capability is modified.

5. A method for authorizing satellite access to a terminal in an air-space-ground scenario, characterized in that: Applied to access networks, including: receiving a terminal registration request message sent by a terminal, where the terminal registration request carries satellite roaming indication information, where the satellite roaming indication information is used to indicate that the terminal supports satellite roaming capability, wherein subscription data indicating that the terminal supports satellite roaming capability is determined based on a bilateral roaming agreement pre-signed between a terrestrial operator and a non-terrestrial operator; Forwarding the terminal registration request message to a corresponding network access control function, wherein the network access control function includes a non-terrestrial core network network access control function or a terrestrial core network network access control function; receiving a terminal registration response message sent by the network access control function and forwarding the message to the terminal, wherein the terminal registration response message carries satellite roaming information; The terminal registration request message is forwarded to the corresponding network access control function, including: if the ground operator and the non-ground operator independently deploy the core network, the terminal registration request message is forwarded to the non-ground core network network access control function; if the ground operator and the non-ground operator share the access network, the terminal registration request message is forwarded to the ground core network network access control function.

6. A device for authorizing satellite access to a terminal in an air-space-ground scenario, characterized in that: Applied to network access control functions, including: a first terminal registration request message receiving module, configured to receive a terminal registration request message forwarded by an access network, wherein the terminal registration request message carries satellite roaming indication information, and the satellite roaming indication information is used to indicate that the terminal supports satellite roaming capability; a subscription data acquisition module, configured to acquire subscription data indicating that the terminal supports satellite roaming capabilities, wherein the subscription data is determined based on a bilateral roaming agreement pre-signed between a terrestrial operator and a non-terrestrial operator; a terminal registration response message sending module, configured to send a terminal registration response message to the access network, wherein the terminal registration response message carries satellite roaming information; The terminal registration response message sending module is also used to send the terminal registration response message indirectly to the access network of the non-terrestrial operator through the roaming interface between the core network of the non-terrestrial operator and the core network of the terrestrial operator if the terrestrial operator and the non-terrestrial operator independently deploy core networks; if the terrestrial operator and the non-terrestrial operator share an access network, send the terminal registration response message directly to the access network of the terrestrial operator.

7. A device for authorizing satellite access to a terminal in an air-space-ground scenario, characterized in that: Applied to access networks, including: a second terminal registration request message receiving module, configured to receive a terminal registration request message sent by a terminal, wherein the terminal registration request carries satellite roaming indication information, where the satellite roaming indication information is used to indicate that the terminal supports satellite roaming capability, wherein the contract data indicating that the terminal supports satellite roaming capability is determined based on a bilateral roaming agreement pre-signed between a terrestrial operator and a non-terrestrial operator; a terminal registration request message forwarding module, configured to forward the terminal registration request message to a corresponding network access control function, wherein the network access control function includes a non-terrestrial core network network access control function or a terrestrial core network network access control function; a terminal registration response message receiving module, configured to receive a terminal registration response message sent by the network access control function and forward the message to the terminal, wherein the terminal registration response message carries satellite roaming information; The terminal registration request message forwarding module is also used to forward the terminal registration request message to the non-terrestrial core network network access control function if the terrestrial operator and the non-terrestrial operator independently deploy core networks; if the terrestrial operator and the non-terrestrial operator share an access network, forward the terminal registration request message to the terrestrial core network network access control function.

8. An electronic device, characterized in that: include: processor; as well as a memory for storing executable instructions of the processor; The processor is configured to execute the method for authorizing satellite access to a terminal in an air-space-ground scenario as described in any one of claims 1 to 5 by executing the executable instructions.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for authorizing a terminal to access a satellite in an air-space-ground scenario as described in any one of claims 1 to 5 is implemented.

10. A computer program product comprising: A computer program or instruction, characterized in that when the computer program or instruction is executed by a processor, it implements the method of authorizing satellite access to a terminal in an air-space-ground scenario as described in any one of claims 1 to 5.

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