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

Abstract

The invention provides a method and device for authorizing satellite access to a terminal in a space-air-ground scene and related equipment, and relates to the technical field of wireless communication, the method is applied to a network access control function, and the method comprises the following steps: receiving a terminal registration request message forwarded by a non-ground access network, the terminal registration request message carrying satellite roaming indication information, and sending the satellite roaming indication information to the non-ground access network; the satellite roaming indication information is used for indicating the terminal to support the satellite roaming capability; obtaining subscription data of the terminal supporting the satellite roaming capability; and a terminal registration response message is sent to the access network, and the terminal registration response message carries the satellite roaming operation information. According to the invention, the message sent by the user terminal can fall back to the home network through the satellite.

Description

Background Art

[0002] For the roaming access scenario, organizations such as the 3rd Generation Partnership Project (3GPP) and the International Mobile Telecommunications 2020 (IMT-2020) Promotion Group have carried out different types of research. Roaming means that when the mobile terminal is not covered by the home network signal, it can still continue to use the mobile communication service by accessing the network in the roaming area to maintain service continuity and improve the user experience. According to whether the data is sent back to the home network, it is divided into Local Breakout (LBO) and Home Routing (HR). As the key to cross-operator network communication, off-net roaming is a technology that allows users to seamlessly connect between different operator networks, mainly achieved through two methods: core network roaming and access network sharing. Core network roaming uses home routing, and user data is sent back to the home network. The two roaming parties independently build and manage the network; while access network sharing realizes the access of multiple operators by sharing the access network.

[0003] In the integrated space-air-ground network, it often happens that the equipment of ground operators cannot be connected 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 art section is only used to enhance the understanding of the background of the present disclosure, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0005] The present disclosure provides a method, device and related equipment for authorizing satellite access to a terminal in the space-air-ground scenario, which at least to a certain extent overcomes the problem that the ground access network cannot be connected due to network failures, natural disasters, or insufficient signal coverage in remote areas in the related art.

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

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

[0008] In some exemplary embodiments of the present disclosure, based on the foregoing solution, obtaining the subscription data of the terminal supporting satellite roaming capabilities includes: sending a subscription data acquisition request to a unified subscription management function, where the subscription data acquisition request is used to request to obtain the subscription data of the terminal supporting satellite roaming capabilities; and receiving the subscription data of the terminal supporting satellite roaming capabilities returned by the unified subscription management function.

[0009] In some exemplary embodiments of the present disclosure, based on the foregoing solution, sending a terminal registration response message to the access network includes: if the terrestrial operator and the non-terrestrial operator deploy the core network independently, 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 the access network, directly sending the terminal registration response message to the access network of the terrestrial operator.

[0010] In some exemplary embodiments of the present disclosure, based on the foregoing 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 foregoing solution, after sending the terminal registration response message to the access network, the method further includes: sending a subscription instruction to the unified subscription management function to subscribe to the service of receiving a notification when the subscription data of the terminal supporting satellite roaming capabilities is modified.

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

[0013] In some exemplary embodiments of the present disclosure, based on the foregoing solution, forwarding the terminal registration request message to a corresponding network access control function includes: if the terrestrial operator and the non-terrestrial operator independently deploy the core network, forwarding the terminal registration request message to the non-terrestrial core network access control function; if the terrestrial operator and the non-terrestrial operator share the access network, forwarding the terminal registration request message to the terrestrial core network access control function.

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

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

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

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

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

[0019] According to yet another aspect of the present disclosure, there is also provided a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements any of the above methods for authorizing a terminal to access a satellite in a space-air-ground scenario.

[0020] According to another aspect of the present disclosure, there is also provided a computer program product, including: a computer program or instruction, and when the computer program or instruction is executed by a processor, it implements the method for authorizing a terminal to access a satellite in a space-air-ground scenario as described in any of the above items.

[0021] In an embodiment of the present disclosure, a method, apparatus, and related equipment for authorizing a terminal to access a satellite in an air, space, and ground scenario receive a terminal registration request message carrying an indication that the terminal supports satellite roaming capabilities, and obtain subscription data indicating that the terminal supports satellite roaming capabilities. After the access network receives a terminal registration response message indicating that the terminal supports satellite roaming capabilities, when the terminal cannot connect to the ground access network, the message sent by the terminal can be transmitted back to the ground access network via the satellite, ensuring that the terminal can maintain a communication connection even when the ground network is unavailable, thereby guaranteeing the continuity and reliability of services.

[0022] It should be understood that the above general description and subsequent detailed description are merely exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure. Obviously, the accompanying drawings in the following description are only some embodiments of the present disclosure, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0024] Figure 1 Exemplary application system architecture diagram showing a method for authorizing a terminal to access a satellite in an air, space, and ground scenario in an embodiment of the present disclosure; Figure 2 Diagram showing data being transmitted back to the home network via the satellite core network in an embodiment of the present disclosure; Figure 3 Diagram showing data being directly transmitted back to the home network in an embodiment of the present disclosure; Figure 4 Diagram showing a method for authorizing a terminal to access a satellite in an air, space, and ground scenario applied to a network access control function in an embodiment of the present disclosure; Figure 5 Diagram showing a method for authorizing a terminal to access a satellite in an air, space, and ground scenario applied to a non-terrestrial access network in an embodiment of the present disclosure; Figure 6 Diagram showing a method for authorizing a terminal to access a satellite in an air, space, and ground scenario applied to a unified subscription management function in an embodiment of the present disclosure; Figure 7 Interaction diagram showing a method for authorizing a terminal to access a satellite in an air, space, and ground scenario in an embodiment of the present disclosure; Figure 8 Diagram showing a device for authorizing a terminal to access a satellite in an air, space, and ground scenario applied to a network access control function in an embodiment of the present disclosure; Figure 9Schematic diagram of a device for authorizing a terminal to access a satellite in an air-space-ground scenario applied to a non-terrestrial access network according to an embodiment of the present disclosure; Figure 10 Schematic diagram of a device for authorizing a terminal to access a satellite in an air-space-ground scenario applied to a unified subscription management function according to an embodiment of the present disclosure; Figure 11 Schematic diagram of an electronic device for a method of authorizing a terminal to access a satellite in an air-space-ground scenario according to an embodiment of the present disclosure. Detailed implementation manners

[0025] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various 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 more complete and comprehensive, and will fully convey the concept of the example embodiments to those skilled in the art. The described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0026] In addition, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of the embodiments of the present disclosure. However, those skilled in the art will realize 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 obscuring aspects of the present disclosure.

[0027] The flowchart shown in the accompanying drawings is only an exemplary illustration and does not necessarily include all the contents and operations / steps, nor does it necessarily execute in the described order. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined. Therefore, the actual execution order may be changed according to the actual situation.

[0028] As Figure 1 shown, the system architecture includes a terminal device 101, a network 102, and a network-side device 103.

[0029] The network 102 is used to provide a medium for a communication link between the terminal device 101 and the network-side device 103, and can be a wired network or a wireless network.

[0030] Optionally, the above-mentioned wireless network or wired network uses standard communication technologies and / or protocols. The network is usually the Internet, but can also be any network, including but not limited to any combination of 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 a virtual private network. In some embodiments, technologies and / or formats including Hyper Text Mark-up Language (HTML), Extensible Markup Language (XML), etc. are used to represent the data exchanged through the network. In addition, conventional encryption technologies such as Secure Socket Layer (SSL), Transport Layer Security (TLS), Virtual Private Network (VPN), Internet Protocol Security (IPSec), etc. can be used to encrypt all or some of the links. In other embodiments, customized and / or dedicated data communication technologies can also be used to replace or supplement the above data communication technologies.

[0031] Optionally, the terminal device in the embodiments of the present disclosure may also be referred to as a UE (User Equipment). In specific implementations, 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 embodiments of the present invention.

[0032] The network-side device may be a base station, a relay, or an access point, etc. The base station may be a base station of 5G and later versions (for example: 5G NR NB), or a base station in other communication systems (for example: 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.

[0033] Those skilled in the art can know that Figure 1The numbers of terminals, networks, and network-side devices in [it] are merely illustrative. According to actual needs, there can be any number of terminals, networks, and network-side devices. The embodiments of the present disclosure do not limit this.

[0034] Under the above system architecture, the embodiments of the present disclosure provide a method for a space-air-ground scenario to authorize a terminal to access a satellite. This method can be executed by any electronic device with computing and processing capabilities.

[0035] In some embodiments, the method for a space-air-ground scenario to authorize a terminal to access a satellite provided by the embodiments of the present disclosure can be executed by the terminal device of the above system architecture; in some other embodiments, the method for a space-air-ground scenario to authorize a terminal to access a satellite provided by the embodiments of the present disclosure can be executed by the server in the above system architecture; in some other embodiments, the method for a space-air-ground scenario to authorize a terminal to access a satellite provided by the embodiments of the present disclosure can be implemented by the terminal device and the server in the above system architecture through interaction.

[0036] To better describe the embodiments of the present disclosure, the following professional terms are now explained: Access and Mobility Management Function (AMF): Mainly responsible for the functions of the control plane, including access control, mobility management, and location tracking of user equipment (UE).

[0037] Unified Data Management (UDM): A network function responsible for user data management and processing. It integrates functions such as storage and management of user subscription information and user authentication.

[0038] First, international standard organizations such as 3GPP and the International Telecommunication Union (ITU) have currently defined the roaming access satellite communication scenario, but the specific research solutions have not been discussed yet. Therefore, the embodiments of the present disclosure pre-bury relevant technical solutions for this scenario.

[0039] In modern communication networks, due to natural disasters, infrastructure damage, or insufficient network coverage in remote areas, etc., the user equipment of terrestrial operators may be unable to connect to the terrestrial access network. In this case, roaming access through non-terrestrial operators has become an important solution. Its core purpose is to ensure that the device can still maintain a communication connection when the terrestrial network is unavailable, thereby ensuring the continuity and reliability of services.

[0040] To better understand the solutions in the embodiments of the present disclosure, the embodiments of the present disclosure may take non-terrestrial operators as an example of satellite operators for introduction. Specifically, for whether a satellite supports two operation modes, that is, supporting satellite operators / and terrestrial operators, when the network access control function of the access network is selected, it is necessary to judge based on the policy whether the user data indirectly falls back to the home network through the satellite core network or directly falls back to the terrestrial operator core network. Specifically, one is as Figure 2 shown. The UE roams and accesses the satellite network, and the data is transmitted back to the home network through the satellite core network. More specifically, in this case, the terrestrial operator and the satellite operator independently deploy the core network. After signing a roaming agreement between the terrestrial operator and the satellite operator, when the user terminal device of the terrestrial operator detects that it cannot connect to the local terrestrial access network, it will automatically trigger the satellite roaming access mechanism. The satellite operator provides a communication channel for the device through its characteristics of wide coverage and long transmission distance. By roaming and accessing the satellite access network, the user equipment can upload the data to the satellite. After being judged by the radio access network, the user data first falls back to the satellite operator core network and is indirectly transmitted back to the terrestrial operator network through the security proxy; the other is as Figure 3 shown. The terrestrial operator and the satellite operator share the access network. When the user accesses the satellite network, the data is directly transmitted back to the home network. Specifically, the terrestrial operator and the satellite operator share the access network. When the user equipment of the terrestrial operator accesses the satellite, the radio access network judges that the satellite can be directly connected to the terrestrial operator core network, and the user data can directly fall back to the home network to realize the sharing of the access network.

[0041] Figure 4 FIG. shows a schematic diagram of a method for authorizing satellite access to a terminal in an air-ground-space scenario in the embodiments of the present disclosure. The method is applied to the network access control function and includes the following steps: S402. Receive a terminal registration request message forwarded by the access network. 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.

[0042] It should be noted that in the embodiments of the present disclosure, the access network connects the end-user equipment to the core network or the broader Internet. The access network can be regarded as the "last mile" or "first mile" between the user-side equipment (such as computers, mobile phones, smart home devices, etc.) and the infrastructure of the service provider. Its main purpose is to provide an effective means to transmit information such as voice, video, and data. Additionally, in the embodiments of the present disclosure, the terminal registration request message refers to the request information initiated by the user terminal (such as a satellite phone, a portable satellite communication device, or a fixed terminal installed on a vehicle, a ship, an airplane, etc.) to the network to register its own information in the network so as to obtain services. And, the satellite roaming indication information in the embodiments of the present disclosure refers to the operation instructions or information that need to be executed when the user terminal (such as a satellite phone or other types of satellite communication devices) moves from its home service area to the visited service area. This process is similar to the roaming mechanism in the terrestrial cellular network, aiming to ensure that the terminal can maintain communication capabilities in different satellite coverage areas or within the service ranges of different satellite operators. Moreover, satellite roaming allows users to remain connected outside the coverage area of their home network.

[0043] S404. Obtain the subscription data of the terminal's support for satellite roaming capabilities.

[0044] It should be noted that the subscription 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 its home satellite operator). For example, the subscription data is shown in Table 1 below: Table 1

[0045] S406. Send a terminal registration response message to the access network, where the terminal registration response message carries satellite roaming information.

[0046] It should be noted that the terminal registration response message in the embodiments of the present disclosure refers to the ability to authorize the terminal to access the satellite network through roaming. It is equivalent to that the terminal equipment used by the user (such as a satellite phone, a portable satellite communication device, etc.) can still utilize 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 other satellite network coverage areas.

[0047] In an embodiment of the present disclosure, a method for a space-air-ground scenario to authorize a terminal to access a satellite includes: first, receiving a terminal registration request message carrying the terminal's satellite roaming support capability forwarded by an access network; then, obtaining subscription data of the terminal's satellite roaming support capability; and finally, sending a terminal registration response message carrying an indication that the terminal supports satellite roaming to the access network. Compared with the related art where a terminal cannot connect to a terrestrial access network due to network failures, natural disasters, or insufficient signal coverage in remote areas, etc., in the embodiment of the present disclosure, by receiving and obtaining the subscription data of the terminal's satellite roaming support capability and roaming to access the satellite network, when the terminal cannot connect to the terrestrial access network, the messages sent by the terminal can be transmitted back to the home network through the access network. Without the need for the user to replace the device or the operator, seamless switching can be performed in different environments to maintain the continuity of communication.

[0048] In some embodiments, obtaining the subscription data of the terminal's satellite roaming support capability in the embodiment of the present disclosure includes: sending a subscription data acquisition request to a unified subscription management function, where the subscription data acquisition request is used to request the acquisition of the subscription data of the terminal's satellite roaming support capability; and receiving the subscription data of the terminal's satellite roaming support capability returned by the unified subscription management function. Specifically, the subscription data returned by the unified subscription management function in the embodiment of the present disclosure contains information related to whether the terminal supports satellite roaming, enabling the network to confirm whether the terminal has the permission to perform satellite roaming operations, ensuring that the terminal has the satellite roaming capability. Moreover, by obtaining the subscription data, the terminal can directly use this information to interact with the target network (such as the visited satellite network) without requesting the complete subscription data from the home network every time, reducing the number of signaling interactions, reducing network latency, enabling the terminal to quickly and securely access the satellite network, and supporting roaming operations.

[0049] In some embodiments, the embodiments of the present disclosure send a terminal registration response message to the access network, including: if the terrestrial operator and the non-terrestrial operator independently deploy the core network, indirectly send 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 the access network, directly send the terminal registration response message to the access network of the terrestrial operator. Specifically, the non-terrestrial operator (taking the satellite operator as an example) in the embodiments of the present disclosure includes independently deploying the core network. When a terrestrial operator user accesses the satellite through roaming, the user data should first fall back to the satellite core network, dock with the terrestrial operator through the roaming interface between the terrestrial core network and the satellite core network, and indirectly send the terminal registration response message to the access network of the satellite operator through the roaming interface; if the terrestrial operator and the satellite operator share the access network, it directly falls back to the terrestrial operator. It can be seen that which operating mode to choose depends on specific application scenarios and technical and economic considerations. If an efficient and low-latency service experience is pursued, sharing the access network for direct communication may be a better choice; while in the case where higher independence and control are required, independently deploying the core network and indirectly communicating through the roaming interface provides greater flexibility.

[0050] In some embodiments, the embodiments of the present disclosure store the subscription data of the terminal's satellite roaming support capability into the context information of the terminal, which can be directly used when the terminal attempts to access the network, avoiding the need to re-obtain this data from the home network or the core network every time. In a roaming scenario, the terminal can directly provide the necessary subscription information to the visited network, thereby reducing the signaling interaction with the home network, accelerating the registration and authentication processes, significantly improving the efficiency, flexibility, and security of the communication system, and at the same time reducing the dependence on network resources.

[0051] In some embodiments, after sending the terminal registration response message to the access network, the method for the air-ground-space scenario in the embodiments of the present disclosure to authorize satellite access to the terminal further includes: sending a subscription instruction to the unified subscription management function to subscribe to the service of receiving a notification when the subscription data of the terminal's satellite roaming support capability is modified. Specifically, in the embodiments of the present disclosure, by subscribing to the service of receiving a notification when the subscription data of the terminal's satellite roaming support capability is modified, when the subscription data of the terminal's satellite roaming operation is modified (for example, the roaming permission of the user is enabled, disabled, or updated), the subscriber can immediately receive a notification, enabling the network to quickly update the capability status of the terminal and ensuring that the terminal always uses the latest subscription data for communication; in addition, the modification of the subscription 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 policy and avoid security vulnerabilities caused by outdated security parameters.

[0052] Figure 5Schematic diagram of a method for authorizing a terminal to access a satellite in an air-space-ground scenario according to an embodiment of the present disclosure. This method is applied to an access network and includes the following steps: S502: Receive a terminal registration request message sent by a terminal. The terminal registration request carries satellite roaming operation indication information, which is used to indicate that the terminal supports satellite roaming capabilities.

[0053] S504: Forward the terminal registration request message to the corresponding network access control function, where the network access control function includes a non-terrestrial core network access control function or a terrestrial core network access control function.

[0054] 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.

[0055] In some embodiments, for the method of authorizing a terminal to access a satellite in an air-space-ground scenario according to an embodiment of the present disclosure, first, receive a terminal registration request message sent by the terminal; then, forward the terminal registration request message to the corresponding network access control function; finally, receive a terminal registration response message carrying satellite roaming information sent by the network access control function and forward it to the terminal. Compared with the related art where it is impossible to connect to the terrestrial access network due to network failures, natural disasters, or insufficient signal coverage in remote areas, etc., in this embodiment of the present disclosure, by receiving a terminal registration request message carrying indication of the terminal's support for satellite roaming capabilities and forwarding the terminal registration request to the corresponding network access control function, the corresponding network access control function decides to authorize the terminal to roam and access satellite nodes according to the satellite roaming indication. After the access network receives a 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 access control function. Moreover, by roaming and accessing the satellite network, users can seamlessly switch in different environments without changing devices or operators, maintaining the continuity of communication.

[0056] In some embodiments, the embodiments of the present disclosure forward the terminal registration request message to the corresponding network access control function, including: if the terrestrial operator and the non-terrestrial operator deploy the core network independently, forwarding the terminal registration request message to the non-terrestrial core network access control function; if the terrestrial operator and the non-terrestrial operator share the access network, forwarding the terminal registration request message to the terrestrial core network access control function. Specifically, which operation mode the embodiments of the present disclosure select depends on specific service requirements, technical conditions, and the plans of both cooperation parties. The mode of independent deployment of the core network and indirect communication through the roaming interface is more suitable for operators who hope to maintain a high degree of independence and control. Although this mode may result in higher latency, complexity, and maintenance costs; while the mode of direct communication by sharing the access network provides lower latency, a simplified network architecture, and more efficient resource utilization, which is an optimal solution for operators who pursue efficient and low-cost solutions and can accept a certain degree of resource sharing.

[0057] Figure 6 The figure shows a schematic diagram of a method for authorizing a terminal to access a satellite in an air-ground-space scenario in the embodiments of the present disclosure. This method is applied to the unified subscription management function and includes the following steps: S602, determine the subscription data of the terminal supporting satellite roaming capabilities according to the bilateral roaming agreement pre-signed between the terrestrial operator and the non-terrestrial operator.

[0058] S604, in response to the subscription data acquisition request sent by the network access control function, send the subscription data to the network access control function.

[0059] In some embodiments, for the method of authorizing a terminal to access a satellite in the air-ground-space scenario in the embodiments of the present disclosure, first, determine the subscription data of the terminal supporting satellite roaming capabilities according to the bilateral roaming agreement pre-signed between the terrestrial operator and the non-terrestrial operator; then, in response to the subscription data acquisition request sent by the network access control function, send the subscription data to the network access control function. Compared with the problem in the related art that it is impossible to connect to the terrestrial access network due to network failures, natural disasters, or insufficient signal coverage in remote areas, etc., in the embodiments of the present disclosure, the subscription data of the terminal supporting satellite roaming capabilities is determined according to the bilateral roaming agreement pre-signed between the terrestrial operator and the non-terrestrial operator, and the subscription data is sent to the network access control function in response to the subscription data acquisition request sent by the network access control function. After the non-terrestrial access network in the non-terrestrial operator receives the terminal registration response message indicating that the terminal supports satellite roaming capabilities, when the terminal cannot connect to the terrestrial access network, it can access the satellite network through roaming, and the message sent by the terminal can be transmitted back to the terrestrial access network through the non-terrestrial access network. Users can seamlessly switch in different environments and maintain the continuity of communication without changing devices or operators.

[0060] In some embodiments, after the present disclosure embodiment sends the subscription data of the terminal's support for satellite roaming capabilities to the network access control function, the method for authorizing satellite access to the terminal in the space-air-ground scenario of the present disclosure embodiment further includes: receiving a subscription instruction sent by the network access control function, where the subscription instruction is used to subscribe to a service that receives a notification when the subscription data of the terminal's support for satellite roaming capabilities is modified.

[0061] In some embodiments, as Figure 7 shown, the interaction process of the method for authorizing satellite access to the terminal in the space-air-ground scenario of the present disclosure embodiment includes: S702, based on Figure 2 the satellite roaming access scenario, a bilateral roaming agreement is signed between the terrestrial operator and the satellite operator network. This agreement allows user terminals of the terrestrial operator network to roam and access the satellite network. Specifically, a subscription data entry regarding satellite roaming operations is added to the subscription data in the unified subscription management function to indicate that the user roams and accesses the satellite node, and the user data directly or indirectly falls back to the home network. The operator can modify or delete the user subscription permissions regarding the satellite roaming function in the subscription data of the UDM network element at any time, or revoke the user subscription permissions for the user to support roaming and accessing the satellite.

[0062] S704, the user terminal of the terrestrial operator sends a terminal registration request to the satellite: an indication information is carried in the terminal registration request message, and the indication information includes a satellite roaming indication. According to the roaming agreement signed between the terrestrial operator and the satellite operator, the terrestrial operator user is allowed to roam and access the satellite core network.

[0063] S706, select a network access control function based on the information carried in the registration request message. If based on Figure 2 the scenario, the satellite operator independently deploys the core network, and the terrestrial operator user accesses the satellite through roaming. The user data should first fall back to the satellite core network and be docked with the terrestrial operator through the roaming interface between the core networks. In this case, the satellite core network network access control function should be selected; if based on Figure 3 the scenario, the satellite is shared by the terrestrial operator and the satellite operator, and the data can indirectly fall back to the home network through the scenario such as Figure 2 or directly fall back to the home network through the scenario such as Figure 3 . At this time, based on the deployment or network policy, select the terrestrial core network network access control function.

[0064] S708, the access network sends a terminal registration request message to the network access control function.

[0065] S710, after the network access control function successfully completes the registration operation and there is no terminal subscription data, the network access control function obtains the terminal's subscription data regarding the support for satellite roaming capabilities.

[0066] S712, The network access control function obtains the subscription data of the terminal regarding the satellite roaming support capability from the unified subscription management function and stores them as part of the UE context information.

[0067] S714, After receiving a successful response, the network access control function subscribes to the service for receiving notifications when the subscription data is modified through a subscription instruction.

[0068] S716, The network access control function determines to authorize the terminal's roaming access to the satellite capability according to the satellite roaming capability subscribed by the UE.

[0069] S718, The network access control function sends a terminal registration response message to the access network.

[0070] In some embodiments, the embodiments of the present disclosure realize the supplement of off-network roaming satellite access by determining authorization through the network access control function to support roaming access to the satellite network, further improving the space-air-ground integrated system.

[0071] Based on the same inventive concept, an apparatus for authorizing satellite access to a terminal in a space-air-ground scenario is also provided in the embodiments of the present disclosure, as shown in the following embodiments. Since the principle of solving problems in the apparatus embodiments is similar to that in the above method embodiments, the implementation of the apparatus embodiments can refer to the implementation of the above method embodiments, and the repeated parts will not be described again.

[0072] Figure 8 A schematic diagram of an apparatus for authorizing satellite access to a terminal in a space-air-ground scenario in the embodiments of the present disclosure is shown. The apparatus is applied to the network access control function and includes: A first terminal registration request message receiving module 801, configured to receive a terminal registration request message forwarded by the access network, where the terminal registration request message carries satellite roaming indication information, and the satellite roaming indication information is used to indicate that the terminal supports the satellite roaming capability; A subscription data acquisition module 802, configured to acquire the subscription data for the terminal to support satellite roaming operations; A terminal registration response message sending module 803, configured to send a terminal registration response message to the access network, where the terminal registration response message carries satellite roaming operation information.

[0073] In an embodiment of the present disclosure, a device for authorizing a terminal to access a satellite in an air, space, and ground scenario receives, through a first terminal registration request message receiving module, a terminal registration request message carrying the terminal's satellite roaming support capability forwarded by an access network; obtains, through a subscription data acquisition module, the subscription data of the terminal's satellite roaming support capability; and sends, through a terminal registration response message sending module, a terminal registration response message carrying an indication that the terminal supports satellite roaming to the access network. Compared with the related art where a terminal cannot connect to a terrestrial access network due to network failures, natural disasters, or insufficient signal coverage in remote areas, etc., in the embodiment of the present disclosure, by receiving and obtaining the subscription data of the terminal's satellite roaming support capability and roaming to access the satellite network, when the terminal cannot 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 in different environments without replacing the device or the operator, maintaining the continuity of communication.

[0074] In some embodiments, the subscription data acquisition module in the embodiment of the present disclosure is further configured to send a subscription data acquisition request to a unified subscription management function, where the subscription data acquisition request is used to request the subscription data of the terminal's satellite roaming support capability; and receive the subscription data of the terminal's satellite roaming support capability returned by the unified subscription management function.

[0075] In some embodiments, the terminal registration response message sending module in the embodiment of the present disclosure is further configured to, if the terrestrial operator and the non-terrestrial operator independently deploy core networks, indirectly send the terminal registration response message to the non-terrestrial operator's access network through the 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 send the terminal registration response message to the terrestrial operator's access network.

[0076] In some embodiments, the device for authorizing a terminal to access a satellite in an air, space, and ground scenario in the embodiment of the present disclosure further includes: a storage module, configured to store the subscription data of the terminal's satellite roaming support capability into the terminal's context information after obtaining the subscription data of the terminal's satellite roaming support capability.

[0077] In some embodiments, the device for authorizing a terminal to access a satellite in an air, space, and ground scenario in the embodiment of the present disclosure further includes: a subscription instruction module, configured to send a subscription instruction to the unified subscription management function to subscribe to a service that receives a notification when the subscription data of the terminal's satellite roaming support capability is modified after sending the terminal registration response message to the access network.

[0078] Figure 9 The following shows a schematic diagram of a device for authorizing a terminal to access a satellite in an air, space, and ground scenario in an embodiment of the present disclosure. The device is applied to an access network and includes: The second terminal registration request message receiving module 901 is configured to receive a terminal registration request message sent by a terminal. The terminal registration request carries satellite roaming indication information, which is used to indicate that the terminal supports satellite roaming capabilities. The terminal registration request message forwarding module 902 is configured to forward the terminal registration request message to the corresponding network access control function, where the network access control function includes a non-terrestrial core network access control function or a terrestrial core network access control function. The terminal registration response message receiving module 903 is configured to receive the 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.

[0079] In some embodiments, the device for authorizing satellite access to a terminal in the space-air-ground scenario of the present disclosure receives, through the second terminal registration request message receiving module, a terminal registration request message sent by the terminal; forwards, through the terminal registration request message forwarding module, the terminal registration request message to the corresponding network access control function; and receives, through the terminal registration response message receiving module, the terminal registration response message sent by the network access control function and forwards it to the terminal. The terminal registration response message carries satellite roaming information. Compared with the related art where it is impossible to connect to the terrestrial access network due to network failures, natural disasters, or insufficient signal coverage in remote areas, etc., the embodiment of the present disclosure receives a terminal registration request message carrying an indication that the terminal supports satellite roaming capabilities, forwards the terminal registration request to the corresponding network access control function, and the corresponding network access control function decides to authorize the terminal to roam and access satellite nodes according to the satellite roaming indication. 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 access control function. Moreover, by roaming and accessing the satellite network, users can seamlessly switch in different environments without changing devices or operators, maintaining the continuity of communication.

[0080] In some embodiments, the terminal registration request message forwarding module in the embodiment of the present disclosure is further configured to, 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 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 access control function.

[0081] Figure 10 The figure shows a schematic diagram of a device for authorizing satellite access to a terminal in the space-air-ground scenario of the present disclosure. The device is applied to the unified subscription management function and includes: The subscription data determination module 1001 is configured to determine the subscription data for the terminal to support satellite roaming capabilities according to the bilateral roaming agreement pre-signed between the terrestrial operator and the non-terrestrial operator. The subscription data sending module 1002 is configured to send the subscription data to the network access control function in response to the subscription data acquisition request sent by the network access control function.

[0082] In some embodiments, for the apparatus for authorizing satellite access to a terminal in the space-air-ground scenario of the present disclosure, the subscription data determination module determines the subscription data for the terminal to support satellite roaming capabilities according to the bilateral roaming agreement pre-signed between the terrestrial operator and the non-terrestrial operator, where the bilateral roaming agreement includes the terminal's support for satellite roaming capabilities; and the subscription data sending module sends the subscription data to the network access control function in response to the subscription data acquisition request sent by the network access control function. Compared with the related art where it is impossible to connect to the terrestrial access network due to network failures, natural disasters, or insufficient signal coverage in remote areas, etc., in the embodiments of the present disclosure, the subscription data for the terminal to support satellite roaming capabilities is determined according to the bilateral roaming agreement pre-signed between the terrestrial operator and the non-terrestrial operator, and the subscription data is sent to the network access control function in response to the subscription data acquisition request sent by the network access control function. This facilitates the subsequent access network to receive the terminal registration response message indicating that the terminal supports satellite roaming capabilities, and 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 roaming access satellite network. Users can seamlessly switch in different environments without replacing the device or the operator, maintaining the continuity of communication.

[0083] Those skilled in the art of the present technology can understand that various aspects of the present disclosure can be implemented as a system, a method, or a program product. Therefore, various aspects of the present disclosure can be specifically implemented in the following forms, namely: a complete hardware implementation, a complete software implementation (including firmware, microcode, etc.), or an implementation combining hardware and software aspects, which can be collectively referred to as "circuitry", "module", or "system" here.

[0084] Based on the same inventive concept, an electronic device is further provided in the embodiments of the present disclosure. The electronic device includes: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to execute the method for authorizing satellite access to a terminal in the space-air-ground scenario as described in any one of the above through executing the executable instructions. Since the principle of solving problems in the embodiment of this electronic device is similar to that in the above method embodiment, the implementation of the embodiment of this electronic device can refer to the implementation of the above method embodiment, and the repeated parts will not be elaborated.

[0085] Next, refer to Figure 11 to describe the electronic device 1100 according to this embodiment of the present disclosure.Figure 11 The displayed electronic device 1100 is merely an example and should not impose any restrictions on the functions and scope of use of the embodiments of the present disclosure.

[0086] As Figure 11 shown, the electronic device 1100 is presented in the form of a general computing device. The components of the electronic device 1100 may include, but are not limited to: at least one of the above-mentioned processing units 1101, at least one of the above-mentioned storage units 1102, and a bus 1103 connecting different system components (including the storage unit 1102 and the processing unit 1101).

[0087] Among them, the storage unit stores program code, and the program code 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 "Exemplary Method" section of this specification.

[0088] In some embodiments, when the electronic device is used to control, for example, the method for the terminal to authorize satellite access in the above-mentioned space-air-ground scenario of the present disclosure, the processing unit 1101 may execute the following steps of the above method embodiment: Receive a terminal registration request message forwarded by the access network, where 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 the subscription data of the terminal supporting satellite roaming capabilities; send a terminal registration response message to the access network, where the terminal registration response message carries satellite roaming information.

[0089] The storage unit 1102 may include a readable medium in the form of a volatile storage unit, such as a random access storage unit (RAM) 11021 and / or a cache storage unit 11022, and may further include a read-only storage unit (ROM) 11023.

[0090] The storage unit 1102 may further include a program / utility 11024 having a set (at least one) of program modules 11025. Such program modules 11025 include, but are not limited to: an operating system, one or more application programs, other program modules, and program data. Each or some combination of these examples may include the implementation of a network environment.

[0091] The bus 1103 may represent one or more of several types of bus structures, including a storage unit bus or a storage unit controller, a peripheral bus, a graphics acceleration port, a processing unit, or a local bus using any bus structure in a variety of bus structures.

[0092] The electronic device 1100 can also communicate with one or more external devices 1104 (such as a keyboard, a pointing device, a Bluetooth device, etc.), and can also communicate with one or more devices that enable a user to interact with the electronic device 1100, and / or communicate with any device (such as a router, a modem, etc.) that enables the electronic device 1100 to communicate with one or more other computing devices. Such communication can be carried out through the input / output (I / O) interface 1105. Moreover, the electronic device 1100 can also communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) through the network adapter 1106. As shown in the figure, the network adapter 1106 communicates with other modules of the electronic device 1100 through the bus 1103. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in combination with the 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, etc.

[0093] Through the description of the above embodiments, those skilled in the art can easily understand that the exemplary embodiments described herein can be implemented by software, or can be implemented by the way of software combined with necessary hardware. Therefore, the technical solutions according to the embodiments of the present disclosure can be embodied in the form of a software product, and the software product can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (which can be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the embodiments of the present disclosure.

[0094] Based on the same inventive concept, an embodiment of the present disclosure also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the method for the air-ground-space scenario to authorize a terminal to access a satellite as described in any one of the above. Since the principle of solving problems in the embodiment of the computer-readable storage medium is similar to that in the above method embodiment, the implementation of the embodiment of the computer-readable storage medium can refer to the implementation of the above method embodiment, and the repeated parts will not be described again.

[0095] More specific examples of the computer-readable storage medium in the present disclosure can include but are not limited to: an electrical connection having one or more wires, 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), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0096] In the present disclosure, a computer-readable storage medium may include a data signal included in a baseband or propagated as part of a carrier wave, in which readable program code is carried. Such a propagated data signal may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing. The readable signal medium may also be any readable medium other than the readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0097] Optionally, 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 fiber cable, RF, etc., or any suitable combination of the foregoing.

[0098] 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. The programming languages include object-oriented programming languages such as Java, C++, etc., and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, executed as a stand-alone software package, partially on the user computing device and partially on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through 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., connected through the Internet using an Internet service provider).

[0099] Based on the same inventive concept, an embodiment of the present disclosure also provides a computer program product, including: a computer program or instruction, which when executed by a processor implements the method for authorizing a satellite access for a terminal in an air-ground-space scenario in any one of the above method embodiments. Since the principle of solving problems in this embodiment of the computer program product is similar to that of the above method embodiments, the implementation of this embodiment of the computer program product may refer to the implementation of the above method embodiments, and the repeated parts will not be described again.

[0100] It should be noted that although several modules or units of a device for action execution are mentioned in the above detailed description, such a division is not mandatory. In fact, according to the embodiments of the present disclosure, the features and functions of the two or more modules or units described above may be embodied in one module or unit. Conversely, the features and functions of one module or unit described above may be further divided and embodied by multiple modules or units.

[0101] In addition, although the various steps of the methods in the present disclosure are described in a specific order in the drawings, this does not require or imply that the steps must be performed in that specific order, or that all of the shown steps must be performed to achieve the desired result. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step for execution, and / or one step may be decomposed into multiple steps for execution, etc.

[0102] From the description of the above embodiments, those skilled in the art can easily understand that the exemplary embodiments described herein can be implemented by software or by 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 (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the methods according to the embodiments of the present disclosure.

[0103] After considering the specification and practicing the invention disclosed herein, those skilled in the art will readily conceive of other embodiments of the present disclosure. The present 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 known common knowledge or conventional technical means in the technical field not disclosed herein. The specification and examples are only to be considered as exemplary, and the true scope and spirit of the present disclosure are pointed out 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, and the satellite roaming indication information is used to indicate that the terminal supports satellite roaming capability; Acquiring the subscription data of the terminal supporting satellite roaming capability; Sending a terminal registration response message to the access network, wherein the terminal registration response message carries satellite roaming information.

2. The method for authorizing satellite access to a terminal in an air-space-ground scenario according to claim 1, characterized in that: Acquiring 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 satellite access to a terminal in an air-space-ground scenario according to claim 1, characterized in that: 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 a terminal registration response message to the access network of the non-terrestrial operator through a roaming interface between the core network of the non-terrestrial operator and the core network of the terrestrial operator; If the terrestrial operator shares an access network with the non-terrestrial operator, a terminal registration response message is directly sent to the access network of the terrestrial operator.

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

5. The method for authorizing satellite access to a terminal 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.

6. 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, wherein 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; 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; A terminal registration response message sent by the network access control function is received and forwarded to the terminal, wherein the terminal registration response message carries satellite roaming information.

7. The method for authorizing satellite access to a terminal in an air-space-ground scenario according to claim 6, characterized in that: Forwarding the terminal registration request message to a corresponding network access control function includes: If the terrestrial operator and the non-terrestrial operator independently deploy the core network, forwarding the terminal registration request message to the network access control function of the non-terrestrial core network; If the terrestrial operator shares an access network with the non-terrestrial operator, the terminal registration request message is forwarded to the network access control function of the terrestrial core network.

8. A method for authorizing a terminal to access a satellite in an air-ground scenario, characterized in that: Applied to unified contract management functions, including: 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; In response to a subscription data acquisition request sent by a network access control function, the subscription data is sent to the network access control function.

9. A device for authorizing a terminal to access a satellite 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, used to acquire subscription data of the terminal supporting satellite roaming capability; The terminal registration response message sending module is used to send a terminal registration response message to the access network, wherein the terminal registration response message carries satellite roaming information.

10. A device for authorizing a terminal to access a satellite 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, 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; The terminal registration response message receiving module is used to receive the terminal registration response message sent by the network access control function and forward it to the terminal, wherein the terminal registration response message carries satellite roaming information.

11. A device for authorizing a terminal to access a satellite in an air-space-ground scenario, characterized in that: Applied to unified contract management functions, including: A subscription data determination module, used to determine the subscription data of the terminal supporting satellite roaming capability according to the bilateral roaming agreement pre-signed between the terrestrial operator and the non-terrestrial operator, wherein the bilateral roaming agreement includes the terminal supporting satellite roaming capability; The contract data sending module 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.

12. An electronic device, characterized in that: include: processor; as well as A memory, configured to store 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 8 by executing the executable instructions.

13. 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 8 is implemented.

14. 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 for authorizing satellite access to a terminal in an air-space-ground scenario as described in any one of claims 1 to 8.

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