Feed link establishment method and device of satellite-borne base station, equipment and storage medium

Abstract

The invention discloses a method, a device and equipment for establishing a feed link of a satellite-borne base station and a storage medium, a security module is used for replacing a lightweight core network in an existing satellite-borne load part, and information interaction with a feed terminal is carried out through a distribution unit and a center unit of the satellite-borne base station. When a feed terminal needs to establish a feed link with a satellite-borne base station, a security module can perform security authentication on terminal identification information acquired by a distribution unit, and establishes the feed link between the satellite-borne base station and the feed terminal after the security authentication is passed, so that the processing of the bearer data of the established feed link is only in the satellite-borne base station, and the processing of the bearer data is convenient. A traditional core network is not involved, so that when the feed link is established, the feed terminal does not need to perform information interaction with a plurality of network elements in the core network, the data stream link is short, and the access delay of a feed user is reduced.

Description

Technical Field

[0001] The present invention relates to the field of wireless communications, and in particular to a method, device, equipment and storage medium for establishing a feeder link of a satellite-borne base station. Background Art

[0002] Land mobile communication networks are constrained by factors such as network deployment costs and geographical environment and cannot provide global seamless coverage. Satellite communication networks have a wide coverage range and are less affected by the geographical environment. They can serve as a supplement to land cellular networks and provide global seamless coverage. NTN (Non-Terrestrial Networks) can utilize the integration of satellite communication networks and ground 5G networks to provide ubiquitous coverage without being restricted by terrain. NTN mainly uses a transparent forwarding mode of networking. The feed terminal forwards the data to the ground receiving station through the relay on the satellite payload, and the ground receiving station transparently transmits the data to the ground base station to establish a wireless bearer.

[0003] The next generation satellite network solution adopts the signal on-board regeneration mode. In this mode, the network architecture of NTN is as follows: Figure 1 As shown, the satellite payload includes a base station and a lightweight core network (5GC), which mainly realizes security and core network security and data transmission functions. Commercial terminals and gateway feeding terminals (feeding terminals) are connected to the satellite base station. The existing technology has the following problems: when establishing a feeding link between the feeding terminal and the satellite base station, it is necessary to use multiple network elements in the core network such as AMF (Access and Mobility Management Function), UPF (User Plane Function), SMF (session management function), PCF (policy control function, wireless network controller), UDM (Unified Data Management Register) to interact with information, and it is necessary to complete the registration and session link establishment process. The data flow link is long, resulting in a long access delay for the feeding user. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a method, device, equipment and storage medium for establishing a feeder link of a satellite base station, simplify the interaction process between the satellite base station and the feed terminal to establish a feeder link, reduce access delay, and realize fast data transmission of the feeder link.

[0005] To achieve the above object, an embodiment of the present invention provides a method for establishing a feeder link of a satellite base station, which is applied to a central unit of the satellite base station. The method includes:

[0006] When receiving an uplink forwarding message carrying an indication of the access type of the power feeding terminal sent by the distribution unit of the spaceborne base station, trigger the security authentication process of the security module in the spaceborne base station;

[0007] Send a context establishment request to the distribution unit to enable the distribution unit to instruct the power feeding terminal to return a security mode completion message carrying terminal identification information;

[0008] When receiving an uplink forwarding message carrying terminal identification information sent by the distribution unit, send the terminal identification information to the security module to enable the security module to perform security authentication on the terminal identification information;

[0009] When receiving an identity confirmation message returned by the security module after successful security authentication, send a power feeding link establishment indication to the distribution unit to establish a power feeding link between the spaceborne base station and the power feeding terminal.

[0010] To achieve the above object, an embodiment of the present invention further provides a method for establishing a power feeding link of a spaceborne base station, which is applied to the security module of the spaceborne base station. The method includes:

[0011] After triggering the security authentication process through the central unit of the spaceborne base station, when receiving the terminal identification information sent by the central unit, perform security authentication on the terminal identification information; wherein, the terminal identification information is obtained through the distribution unit of the spaceborne base station, and the central unit sends a context establishment request to the distribution unit to enable the distribution unit to instruct the power feeding terminal to return a security mode completion message carrying terminal identification information;

[0012] Return an identity confirmation message to the central unit after successful security authentication to enable the central unit to send a power feeding link establishment indication to the distribution unit to establish a power feeding link between the spaceborne base station and the power feeding terminal.

[0013] To achieve the above object, an embodiment of the present invention further provides a method for establishing a power feeding link of a spaceborne base station, which is applied to the distribution unit of the spaceborne base station. The method includes:

[0014] Send an uplink forwarding message carrying an indication of the access type of the power feeding terminal to the central unit of the spaceborne base station to enable the central unit to trigger the security authentication process of the security module in the spaceborne base station;

[0015] When receiving the context establishment request sent by the central unit, instruct the power feeding terminal to return a security mode completion message carrying terminal identification information;

[0016] Send an uplink forwarding message carrying the terminal identification information to the central unit, so that the central unit sends the terminal identification information to the security module, and the security module performs security authentication on the terminal identification information;

[0017] When receiving the feeder link establishment indication sent by the central unit, establish the feeder link between the spaceborne base station and the feeder terminal; wherein, when the central unit receives the identity confirmation message returned by the security module after successful security authentication, it sends the feeder link establishment indication to the distribution unit.

[0018] To achieve the above object, an embodiment of the present invention further provides a method for establishing a feeder link of a spaceborne base station, which is applied to a feeder terminal, and the method includes:

[0019] Send a request message carrying an indication of the access type of the feeder terminal to the distribution unit in the spaceborne base station, so that the distribution unit sends an uplink forwarding message carrying an indication of the access type of the feeder terminal to the central unit of the spaceborne base station, and the central unit triggers the security authentication process of the security module in the spaceborne base station;

[0020] Send a security mode completion message carrying the terminal identification information to the distribution unit, and forward the terminal identification information to the security module through the central unit, so that the security module performs security authentication on the terminal identification information; wherein, after triggering the security authentication process of the security module in the spaceborne base station, the central unit sends a context establishment request to the distribution unit, so that the distribution unit instructs the feeder terminal to return a security mode completion message;

[0021] Establish a feeder link with the spaceborne base station after successful security authentication.

[0022] To achieve the above object, an embodiment of the present invention further provides a device for establishing a feeder link of a spaceborne base station, including:

[0023] A security authentication process triggering module, configured to trigger the security authentication process of the security module in the spaceborne base station when receiving an uplink forwarding message carrying an indication of the access type of the feeder terminal sent by the distribution unit of the spaceborne base station;

[0024] A context establishment request sending module, configured to send a context establishment request to the distribution unit, so that the distribution unit instructs the feeder terminal to return a security mode completion message carrying the terminal identification information;

[0025] A terminal identification information sending module, configured to send the terminal identification information to the security module when receiving an uplink forwarding message carrying the terminal identification information sent by the distribution unit, so that the security module performs security authentication on the terminal identification information;

[0026] A feed link establishment indication sending module, which is configured to send a feed link establishment indication to the distribution unit when receiving an identity confirmation message returned by the security module after successful security authentication, so as to establish a feed link between the spaceborne base station and the feed terminal.

[0027] To achieve the above object, an embodiment of the present invention further provides a feed link establishment device for a spaceborne base station, including:

[0028] A security authentication module, which is configured to perform security authentication on the terminal identification information when receiving the terminal identification information sent by the central unit after triggering a security authentication process by the central unit of the spaceborne base station; wherein, the terminal identification information is obtained by the distribution unit of the spaceborne base station, and the central unit sends a context establishment request to the distribution unit, so that the distribution unit instructs the feed terminal to return a security mode completion message carrying the terminal identification information;

[0029] An identity confirmation message sending module, which is configured to return an identity confirmation message to the central unit after successful security authentication, so that the central unit sends a feed link establishment indication to the distribution unit to establish a feed link between the spaceborne base station and the feed terminal.

[0030] To achieve the above object, an embodiment of the present invention further provides a feed link establishment device for a spaceborne base station, including:

[0031] An uplink forwarding message sending module, which is configured to send an uplink forwarding message carrying an indication of the access type of the feed terminal to the central unit of the spaceborne base station, so that the central unit triggers a security authentication process of the security module in the spaceborne base station;

[0032] A feed terminal indication module, which is configured to instruct the feed terminal to return a security mode completion message carrying the terminal identification information when receiving the context establishment request sent by the central unit;

[0033] The uplink forwarding message sending module is further configured to send an uplink forwarding message carrying the terminal identification information to the central unit, so that the central unit sends the terminal identification information to the security module, and the security module performs security authentication on the terminal identification information;

[0034] A feed link establishment module, which is configured to establish a feed link between the spaceborne base station and the feed terminal when receiving the feed link establishment indication sent by the central unit; wherein, the central unit sends a feed link establishment indication to the distribution unit when receiving the identity confirmation message returned by the security module after successful security authentication.

[0035] To achieve the above object, an embodiment of the present invention further provides a device for establishing a power feeding link of a spaceborne base station, including:

[0036] A request message sending module, configured to send a request message carrying an indication of the access type of the power feeding terminal to a distribution unit in the spaceborne base station, so that the distribution unit sends an uplink forwarding message carrying an indication of the access type of the power feeding terminal to a central unit of the spaceborne base station, and the central unit triggers a security authentication process of a security module in the spaceborne base station;

[0037] A security mode completion message sending module, configured to send a security mode completion message carrying terminal identification information to the distribution unit, and forward the terminal identification information to the security module through the central unit, so that the security module performs security authentication on the terminal identification information; wherein, after triggering the security authentication process of the security module in the spaceborne base station, the central unit sends a context establishment request to the distribution unit, so that the distribution unit instructs the power feeding terminal to return a security mode completion message;

[0038] A power feeding link establishment module, configured to establish a power feeding link with the spaceborne base station after the security authentication is passed.

[0039] To achieve the above object, an embodiment of the present invention further provides a device for establishing a power feeding link of a spaceborne base station, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the method for establishing a power feeding link of a spaceborne base station as described in any one of the above embodiments.

[0040] To achieve the above object, an embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium includes a stored computer program. When the computer program runs, it controls the device where the computer-readable storage medium is located to execute the method for establishing a power feeding link of a spaceborne base station as described in any one of the above embodiments.

[0041] Compared with the prior art, the method, device, equipment, and storage medium for establishing a power feeding link of a spaceborne base station disclosed by the present invention use a security module to replace the lightweight core network in the existing payload part of the spaceborne. Through the distribution unit and the central unit of the spaceborne base station to interact with the power feeding terminal, when the power feeding terminal needs to establish a power feeding link with the spaceborne base station, the security module can perform security authentication on the terminal identification information obtained by the distribution unit, and after the security authentication is passed, establish the power feeding link between the spaceborne base station and the power feeding terminal. Since the bearer data processing for establishing the power feeding link is only inside the spaceborne base station and does not involve the traditional core network, when establishing the power feeding link, the power feeding terminal does not need to interact with multiple network elements in the core network, the data stream link is shorter, and the access delay of the power feeding user is reduced.

[0042] In addition, replacing the core network of the satellite with a security module does not require information interaction using multiple network elements in the core network, effectively reducing the power consumption of satellite-borne devices. An indication field for establishing a power supply link by the power supply terminal is carried in the RRC establishment process, which can ensure admission control for preferentially guaranteeing the access of the power supply link in case of congestion; at the same time, after the satellite-borne base station can identify that the user is a power supply access user, high-priority scheduling guarantee is carried out in scheduling, avoiding the scenario that the performance of the entire satellite-borne base station deteriorates or even the entire base station becomes congested and paralyzed due to the capacity problem of the power supply circuit. Description of the Drawings

[0043] Figure 1 is a schematic diagram of the network architecture of NTN provided by the prior art;

[0044] Figure 2 is a schematic diagram of the network architecture of NTN provided by an embodiment of the present invention;

[0045] Figure 3 is a schematic diagram of the new protocol stack provided by an embodiment of the present invention;

[0046] Figure 4 is a flowchart of the first method for establishing a power supply link of a satellite-borne base station provided by an embodiment of the present invention;

[0047] Figure 5 is a schematic diagram of information interaction for establishing a power supply link between a power supply terminal and a satellite-borne base station provided by an embodiment of the present invention;

[0048] Figure 6 is a flowchart of the second method for establishing a power supply link of a satellite-borne base station provided by an embodiment of the present invention;

[0049] Figure 7 is a flowchart of the third method for establishing a power supply link of a satellite-borne base station provided by an embodiment of the present invention;

[0050] Figure 8 is a flowchart of the fourth method for establishing a power supply link of a satellite-borne base station provided by an embodiment of the present invention;

[0051] Figure 9 is a block diagram of the structure of the first device for establishing a power supply link of a satellite-borne base station provided by an embodiment of the present invention;

[0052] Figure 10 is a block diagram of the structure of the second device for establishing a power supply link of a satellite-borne base station provided by an embodiment of the present invention;

[0053] Figure 11 is a block diagram of the structure of the third device for establishing a power supply link of a satellite-borne base station provided by an embodiment of the present invention;

[0054] Figure 12It is the structural block diagram of the fourth feeder link establishment device for the spaceborne base station provided by the embodiments of the present invention;

[0055] Figure 13 It is the structural block diagram of a feeder link establishment device for a spaceborne base station provided by the embodiments of the present invention. Specific embodiments

[0056] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0057] See Figure 2 , Figure 2 It is the schematic diagram of the network architecture of NTN provided by the embodiments of the present invention. Different from the prior art, the original combination mode of "gNB + lightweight 5GC" is changed to the combination mode of "gNB + security module". The security module is a NAS (Non-Access Stratum) security module deployed inside the gNB-CU (Centralized Unit) or as a separate network element, which can implement the NAS security function and the identity consistency authentication function of the feeder user (feeder terminal). The spaceborne base station described in the embodiments of the present invention includes a central unit CU, a distributed unit DU (Distributed Unit), and a security module.

[0058] It is worth noting that the feeder terminal described in the embodiments of the present invention is a terminal such as a gateway or a gateway station. For example, Figure 2 in [reference], Gateway represents the feeder terminal, while Fixed UE (Fixed User Equipment) and Mobile UE (Mobile User Equipment) represent commercial terminals. Although both commercial terminals and feeder terminals need to establish a link with the spaceborne base station, the link established between the commercial terminal and the spaceborne base station is a service link, the link established between the feeder terminal and the spaceborne base station is a feeder link, and the link established between spaceborne base stations is an inter-satellite link (ISL).

[0059] See Figure 3 , Figure 3It is a schematic diagram of the new protocol stack provided by the embodiments of the present invention. The NG-U interface is the interface between the base station and the user plane of the core network. In the prior art, the feeding terminal needs to be connected to the 5GC through N6 (the N6 interface is the interface protocol between the terminal and the base station and between the user plane function UPF and the data network DN), and then connected to the spaceborne base station through NG-U. The data flow link is long, and the data needs to be looped back between the base station and the 5GC. In the embodiments of the present invention, by reading the NG-U (also known as N3) data from the shared memory, the feeding terminal can directly interact with the complete module in the core network through the NG-U interface, simplifying the link and reducing the data processing volume. The feeding link directly reads the NG-U interface data of the user link, and the NG-U interface data is equivalent to the SDU (Service Data Unit) data of the feeding link.

[0060] In addition, the protocol stack format adopted by NG-U in the prior art is as Figure 3 shown in the left table in, including GTP-U (GPRS Tunneling Protocol for User Plane, the protocol for transmitting user data in the GPRS network), UDP (User Datagram Protocol), IP (Internet Protocol), Data Link Layer, and Physical Layer. In the embodiments of the present invention, a new air interface protocol stack is provided, and its format can be referred to Figure 3 in the right table, including GTP-U, UDP, IP, SDU, SDAP (Service Data Adaptation Protocol), PDCP (Packet Data Convergence Protocol), RLC (Radio Link Control), MAC (Media Access Control), and PHY (Physical Layer).

[0061] In the embodiments of the present invention, the loopback function of the interactive device in the prior art is replaced by using the shared memory method, the data flow link is short, and the processing delay and computing power consumption of the feeding link are reduced.

[0062] See Figure 4 , Figure 4 is a flowchart of the first method for establishing a feeding link of a spaceborne base station provided by the embodiments of the present invention. The method for establishing a feeding link of the spaceborne base station described in the embodiments of the present invention is applied to the central unit of the spaceborne base station, and the method includes:

[0063] When receiving an uplink forwarding message carrying an indication of the access type of the power feeding terminal sent by the distribution unit of the spaceborne base station, trigger the security authentication process of the security module in the spaceborne base station;

[0064] Send a context establishment request to the distribution unit, so that the distribution unit instructs the power feeding terminal to return a security mode completion message carrying terminal identification information;

[0065] When receiving an uplink forwarding message carrying terminal identification information sent by the distribution unit, send the terminal identification information to the security module, so that the security module performs security authentication on the terminal identification information;

[0066] When receiving the identity confirmation message returned by the security module after successful security authentication, send a power feeding link establishment indication to the distribution unit to establish the power feeding link between the spaceborne base station and the power feeding terminal.

[0067] See Figure 5 , Figure 5 is a schematic diagram of information interaction for establishing a power feeding link between a power feeding terminal and a spaceborne base station provided by an embodiment of the present invention. Use Figure 5 to describe the above steps S11 to S14 in detail.

[0068] It should be noted that Figure 5 Steps 1 to 5 in

[0069] are the processes for the power feeding terminal to establish an RRC (Radio Resource Control) connection with the spaceborne base station. Specifically, when the power feeding terminal establishes an RRC connection with the spaceborne base station, an information field indicating the access type of the power feeding terminal is added to the RRC establishment request or RRC establishment completion message sent to the distribution unit, so that the distribution unit sends an uplink forwarding message carrying an indication of the access type of the power feeding terminal to the central unit.

[0070] 2. The distribution unit sends an uplink forwarding message to the central unit. At this time, this uplink forwarding message is used to inform the central unit that the feeder terminal requests to establish an RRC connection with the spaceborne base station. The uplink forwarding message can be an InitialMessage Transfer (initial forwarding message). When a new field indicating the access type of the feeder terminal is carried in the RRC establishment request, this new field indicating the access type of the feeder terminal also needs to be carried in this uplink forwarding message.

[0071] 3. After receiving the uplink forwarding message indicating that the feeder terminal requests to establish an RRC connection with the spaceborne base station, the central unit returns a DL RRC Message Transfer (RRC downlink forwarding message) to the distribution unit, indicating consent to establish an RRC connection with the feeder terminal.

[0072] 4. After receiving the RRC downlink forwarding message, the distribution unit establishes an RRC connection with the feeder terminal.

[0073] 5. After establishing an RRC connection with the distribution unit, the feeder terminal returns an RRC SetupComplete (RRC establishment complete message) to the distribution unit. The feeder terminal can add a new field indicating the access type indication of the feeder terminal in the RRC establishment complete message.

[0074] 6. After receiving the RRC establishment complete message, the distribution unit sends an uplink forwarding message to the central unit. At this time, this uplink forwarding message is used to inform the central unit that the feeder terminal has established an RRC connection with the spaceborne base station. The uplink forwarding message can be a UL RRC Message Transfer (RRC uplink forwarding message). When a new field indicating the access type of the feeder terminal is carried in the RRC establishment complete message, this new field indicating the access type of the feeder terminal also needs to be carried in this uplink forwarding message.

[0075] Specifically, when the central unit receives an uplink forwarding message (which can be the one sent in step 2 or step 6) carrying the indication of the access type of the feeder terminal, it determines that the feeder terminal needs to establish a feeding link with the spaceborne base station at this time. At this time, the central unit needs to trigger the security authentication process of the security module. Triggering the security authentication process of the security module in the spaceborne base station includes: sending an initial request message to the security module in the spaceborne base station to enable the security module to trigger the security authentication process and return a security parameter configuration message; where the security parameter configuration message carries configuration parameters for data integrity protection and encryption. Exemplarily, the process of triggering the security authentication process of the security module can refer to Figure 5 steps 7 and 8.

[0076] 7. The central unit sends an initial request (NAS Initial Message) to the security module, triggering the security module to respond and start executing the security authentication process.

[0077] It should be noted that in the LTE (Long Term Evolution) protocol architecture, the protocol layer is divided into the non-access stratum and the access stratum. The security protection mechanism in the LTE system adopts different security mode command processes in the non-access stratum and the access stratum to activate their respective integrity and encryption functions. The security module in the embodiment of the present invention applies the AS (Access Stratum) security mode, and the command process of the AS security mode is configured with RRC signaling and security algorithms for the user plane. After receiving the initial request, the security module enters the AS security activation process. At this time, the security module will configure configuration parameters for protecting the integrity and encrypting data, such as parameters of the security algorithm at the AS layer. The security algorithm may include an integrity protection algorithm and an encryption algorithm.

[0078] 8. The security module sends an AS Security Para Config message to the central unit, indicating that it has entered the AS security activation process, and sends the configuration parameters (integrity protection algorithm + encryption algorithm) to the central unit through the AS Security Para Config message.

[0079] 9. After receiving the AS Security Para Config message, the central unit sends a UEContext Setup Request to the distributed unit.

[0080] Specifically, the UEContext Setup Request carries priority scheduling information for establishing a feeder link, and the priority scheduling information is used to instruct the distributed unit to take establishing the feeder link as a high-priority scheduling task. For example, a feeder link field is added to the UEContext Setup Request to instruct the gNB-DU scheduling module to ensure high-priority scheduling. Due to the high-priority scheduling guarantee in the scheduling of the distributed unit, the scenario of the performance degradation of the entire spaceborne base station, or even the congestion and paralysis of the entire base station caused by the capacity problem of the feeder circuit is avoided.

[0081] 10. After receiving the UEContext Setup Request, the distributed unit sends a SecurityMode Command to the feeder terminal, so that the feeder terminal returns a Security Mode Complete message carrying terminal identification information to the distributed unit. It should be noted that the SecurityMode Command carries the configuration parameters of the security algorithm at the AS layer.

[0082] 11. After the distribution unit sends the security mode command to the feeder terminal, it returns a UE Context Setup Response to the central unit, informing the central unit that the scheduling for establishing the feeder link has been preferentially completed.

[0083] 12. After receiving the security mode command, the feeder terminal requests the underlying PDCP (Packet Data Convergence Protocol) to perform integrity protection verification on this message. The verification algorithm uses the integrity protection algorithm carried in the security mode command. If the verification passes, it instructs the underlying layer to send a Security Mode Complete message to the distribution unit, and performs integrity protection on the Security Mode Complete message, and performs integrity protection and encryption on the subsequent messages and data interacted with the distribution unit, and the AS security process is completed; if the verification fails, the feeder terminal instructs the underlying layer to transmit a Security Mode Failure message to the distribution unit, and does not use encryption and integrity protection for the subsequent messages and data interacted with the eNodeB, and the AS security process fails.

[0084] Specifically, the Security Mode Complete message carries the terminal identification information of the feeder terminal, and the terminal identification information is IMSI (International Mobile Subscriber Identification Number) or MAC, or other unique identification codes that can represent the feeder terminal.

[0085] 13. After receiving the complete mode completion message sent by the feeder terminal, the distribution unit needs to send the terminal identification information to the central unit. At this time, the distribution unit sends an uplink forwarding message to the central unit, and the uplink forwarding message carries the terminal identification information.

[0086] 14. After receiving the uplink forwarding message carrying the terminal identification information, the central unit sends a UE Identity Indication message to the security module, and the UE Identity Indication message carries the terminal identification information, which is used to request the security module to perform identity authentication on the feeder terminal.

[0087] 15. After receiving the terminal identification information, the security module performs identity matching on the identity information of the power - feeding terminal (such as performing IMSI or MAC matching). After successful matching, it returns an identity confirmation message (UE Identity Confirm) to the central unit, indicating that there is no problem with the identity of the power - feeding terminal.

[0088] 16. After receiving the identity confirmation message, the central unit indicates that it can establish a power - feeding link with the power - feeding terminal and sends a power - feeding link establishment indication (UE Feeder Link Setup Indication) to the distribution unit.

[0089] 17. After receiving the power - feeding link establishment indication, the distribution unit triggers an RRC radio interface re - configuration process with the power - feeding terminal. At this time, it sends an RRC re - connection request (RRC Reconnection) to the power - feeding terminal to establish the power - feeding link between the space - borne base station and the power - feeding terminal. The radio interface re - configuration process simultaneously performs link establishment for SRB2 (Signaling Radio Bearer) and DRB. Among them, the configuration parameters carried by DRB (Data Radio Bearer) are configured by the configuration file of the space - borne base station. SRB2 is used to transmit NAS messages carried by the DCH (Enhanced Dedicated Channel) logical channel and is configured only after the security settings are activated in the network.

[0090] 18. After receiving the RRC re - connection request, the power - feeding terminal performs RRC re - connection and, after completing the radio interface re - configuration process, returns an RRC re - connection complete message (RRC Reconnection Complete) to the distribution unit, indicating that the power - feeding link has been successfully established and that uplink and downlink data transmission can be performed.

[0091] Compared with the prior art, the power - feeding link establishment method of the space - borne base station disclosed in the present invention uses a security module to replace the lightweight core network in the payload part of the existing space - borne system. Through information interaction between the distribution unit and the central unit of the space - borne base station and the power - feeding terminal, when the power - feeding terminal needs to establish a power - feeding link with the space - borne base station, the security module can perform security authentication on the terminal identification information obtained by the distribution unit. After the security authentication passes, it establishes the power - feeding link between the space - borne base station and the power - feeding terminal. Since the bearer data processing for establishing the power - feeding link is only within the space - borne base station and does not involve the traditional core network, when establishing the power - feeding link, the power - feeding terminal does not need to perform information interaction with multiple network elements in the core network, the data flow link is shorter, and the access delay of the power - feeding user is reduced.

[0092] In addition, replacing the hierarchical core network with a security module eliminates the need for information interaction among multiple network elements in the core network, effectively reducing the power consumption of on-board devices. An indication field for the feeder terminal to establish a feeder link is carried in the RRC establishment process, which can ensure admission control to give priority to the access of the feeder link in case of congestion. At the same time, after the on-board base station can identify that the user is a feeder access user, it can perform high-priority scheduling guarantees in scheduling to avoid scenarios where the performance of the entire on-board base station deteriorates or even the entire base station becomes congested and paralyzed due to the capacity problem of the feeder circuit.

[0093] See Figure 6 , Figure 6 FIG. is a flowchart of a second method for establishing a feeder link of an on-board base station provided by an embodiment of the present invention. The method for establishing a feeder link of the on-board base station according to the embodiment of the present invention is applied to a security module of the on-board base station, and the method includes:

[0094] S21. After triggering a security authentication process through a central unit of the on-board base station, when receiving the terminal identification information sent by the central unit, perform security authentication on the terminal identification information. Wherein, the terminal identification information is obtained through a distribution unit of the on-board base station, and the central unit sends a context establishment request to the distribution unit to enable the distribution unit to instruct the feeder terminal to return a security mode completion message carrying the terminal identification information.

[0095] S22. After the security authentication is passed, return an identity confirmation message to the central unit to enable the central unit to send a feeder link establishment instruction to the distribution unit to establish a feeder link between the on-board base station and the feeder terminal.

[0096] Specifically, triggering the security authentication process through the central unit of the on-board base station includes:

[0097] Receiving an initial request message sent by the central unit, triggering the security authentication process and returning a security parameter configuration message to the central unit. Wherein, the security parameter configuration message carries configuration parameters for data integrity protection and encryption.

[0098] Specifically, the context establishment request carries priority scheduling information for establishing a feeder link, and the priority scheduling information is used to instruct the distribution unit to take establishing a feeder link as a high-priority scheduling task.

[0099] Specifically, when the feeder terminal establishes an RRC connection with the on-board base station, an information field indicating the access type of the feeder terminal is added to the RRC establishment request or RRC establishment completion message sent to the distribution unit, so that the distribution unit sends an uplink forwarding message carrying the indication of the access type of the feeder terminal to the central unit.

[0100] Specifically, after receiving the context establishment request, the distribution unit sends a security mode command to the power feeding terminal, so that the power feeding terminal returns a security mode completion message carrying terminal identification information to the distribution unit.

[0101] Specifically, after receiving the power feeding link establishment indication, the distribution unit triggers an RRC radio interface reconfiguration process with the power feeding terminal to establish a power feeding link between the spaceborne base station and the power feeding terminal.

[0102] It should be noted that the specific working process of the second method for establishing a power feeding link of the spaceborne base station according to the embodiments of the present invention can refer to the working process of the first method for establishing a power feeding link of the spaceborne base station described in the above embodiments, and will not be elaborated here.

[0103] See Figure 7 , Figure 7 is a flowchart of a third method for establishing a power feeding link of a spaceborne base station provided by the embodiments of the present invention. The method for establishing a power feeding link of the spaceborne base station described in the embodiments of the present invention is applied to a distribution unit of the spaceborne base station, and the method includes:

[0104] S31. Send an uplink forwarding message carrying an indication of the access type of the power feeding terminal to the central unit of the spaceborne base station, so that the central unit triggers a security authentication process of a security module in the spaceborne base station;

[0105] S32. When receiving the context establishment request sent by the central unit, instruct the power feeding terminal to return a security mode completion message carrying terminal identification information;

[0106] S33. Send an uplink forwarding message carrying terminal identification information to the central unit, so that the central unit sends the terminal identification information to the security module, and the security module performs security authentication on the terminal identification information;

[0107] S34. When receiving the power feeding link establishment indication sent by the central unit, establish a power feeding link between the spaceborne base station and the power feeding terminal; wherein, when receiving the identity confirmation message returned by the security module after successful security authentication, the central unit sends a power feeding link establishment indication to the distribution unit.

[0108] Specifically, after receiving the uplink forwarding message carrying an indication of the access type of the power feeding terminal, the central unit sends an initial request message to the security module in the spaceborne base station, so that the security module triggers a security authentication process and returns a security parameter configuration message; wherein, the security parameter configuration message carries configuration parameters for integrity protection and encryption of data.

[0109] Specifically, the context establishment request carries priority scheduling information for establishing a power feeding link, and the priority scheduling information is used to instruct the distribution unit to take establishing the power feeding link as a high-priority scheduling task.

[0110] Specifically, when establishing an RRC connection with the spaceborne base station, the power feeding terminal adds an information field indicating the access type of the power feeding terminal to the RRC establishment request or RRC establishment completion message sent to the distribution unit, so that the distribution unit sends an uplink forwarding message carrying the indication of the access type of the power feeding terminal to the central unit.

[0111] Specifically, after receiving the context establishment request sent by the central unit, the method further includes: sending a security mode command to the power feeding terminal, so that the power feeding terminal returns a security mode completion message carrying terminal identification information.

[0112] Specifically, after receiving the power feeding link establishment indication sent by the central unit, the method further includes: triggering an RRC radio interface reconfiguration process with the power feeding terminal to establish a power feeding link between the spaceborne base station and the power feeding terminal.

[0113] It should be noted that the specific working process of the third power feeding link establishment method for the spaceborne base station according to the embodiments of the present invention may refer to the working process of the first power feeding link establishment method for the spaceborne base station described in the above embodiments, and will not be elaborated herein.

[0114] See Figure 8 , Figure 8 is a flowchart of a fourth power feeding link establishment method for the spaceborne base station provided by the embodiments of the present invention. The power feeding link establishment method for the spaceborne base station according to the embodiments of the present invention is applied to a power feeding terminal, and the method includes:

[0115] S41. Sending a request message carrying an indication of the access type of the power feeding terminal to a distribution unit in the spaceborne base station, so that the distribution unit sends an uplink forwarding message carrying an indication of the access type of the power feeding terminal to the central unit of the spaceborne base station, and the central unit triggers a security authentication process of a security module in the spaceborne base station;

[0116] S42. Sending a security mode completion message carrying terminal identification information to the distribution unit, and forwarding the terminal identification information to the security module through the central unit, so that the security module performs security authentication on the terminal identification information; wherein, after triggering the security authentication process of the security module in the spaceborne base station, the central unit sends a context establishment request to the distribution unit, so that the distribution unit instructs the power feeding terminal to return a security mode completion message;

[0117] S43. Establish a power feeding link with the spaceborne base station after the security authentication is passed.

[0118] Specifically, after receiving the uplink forwarding message carrying the indication of the access type of the power feeding terminal, the central unit sends an initial request message to the security module in the spaceborne base station, so that the security module triggers the security authentication process and returns a security parameter configuration message; wherein, the security parameter configuration message carries configuration parameters for data integrity protection and encryption.

[0119] Specifically, the context establishment request carries priority scheduling information for establishing the power feeding link, and the priority scheduling information is used to instruct the distribution unit to take establishing the power feeding link as a high-priority scheduling task.

[0120] Specifically, the request message is an RRC establishment request or an RRC establishment complete message sent by the power feeding terminal when establishing an RRC connection with the spaceborne base station.

[0121] Specifically, after receiving the context establishment request, the distribution unit sends a security mode command to the power feeding terminal, so that the power feeding terminal returns a security mode complete message carrying the terminal identification information to the distribution unit.

[0122] Specifically, after receiving the power feeding link establishment indication, the distribution unit triggers an RRC air interface reconfiguration process with the power feeding terminal to establish the power feeding link between the spaceborne base station and the power feeding terminal.

[0123] It should be noted that the specific working process of the fourth method for establishing the power feeding link of the spaceborne base station described in the embodiments of the present invention can refer to the working process of the first method for establishing the power feeding link of the spaceborne base station described in the above embodiments, and will not be elaborated here.

[0124] See Figure 9 , Figure 9 is a structural block diagram of the first device 100 for establishing the power feeding link of the spaceborne base station provided by the embodiments of the present invention. The device 100 for establishing the power feeding link of the spaceborne base station includes:

[0125] A security authentication process trigger module 11, configured to trigger the security authentication process of the security module in the spaceborne base station when receiving an uplink forwarding message carrying the indication of the access type of the power feeding terminal sent by the distribution unit of the spaceborne base station;

[0126] A context establishment request sending module 12, configured to send a context establishment request to the distribution unit, so that the distribution unit instructs the power feeding terminal to return a security mode complete message carrying the terminal identification information;

[0127] A terminal identification information sending module 13, configured to send the terminal identification information to the security module when receiving an uplink forwarding message carrying the terminal identification information sent by the distribution unit, so that the security module performs security authentication on the terminal identification information;

[0128] A power supply link establishment indication sending module 14, configured to send a power supply link establishment indication to the distribution unit when receiving an identity confirmation message returned by the security module after successful security authentication, so as to establish a power supply link between the spaceborne base station and the power supply terminal.

[0129] Specifically, the security authentication process triggering module 11 is configured to send an initial request message to the security module in the spaceborne base station, so that the security module triggers a security authentication process and returns a security parameter configuration message; wherein, the security parameter configuration message carries configuration parameters for data integrity protection and encryption.

[0130] Specifically, the context establishment request carries priority scheduling information for establishing a power supply link, and the priority scheduling information is used to instruct the distribution unit to take establishing a power supply link as a high-priority scheduling task.

[0131] Specifically, when establishing an RRC connection with the spaceborne base station, the power supply terminal adds an information field indicating the access type of the power supply terminal to the RRC establishment request or RRC establishment completion message sent to the distribution unit, so that the distribution unit sends an uplink forwarding message carrying the indication of the access type of the power supply terminal to the central unit.

[0132] Specifically, after receiving the context establishment request, the distribution unit sends a security mode command to the power supply terminal, so that the power supply terminal returns a security mode completion message carrying the terminal identification information to the distribution unit.

[0133] Specifically, after receiving the power supply link establishment indication, the distribution unit triggers an RRC air interface reconfiguration process with the power supply terminal to establish a power supply link between the spaceborne base station and the power supply terminal.

[0134] It should be noted that the working processes of the various modules in the power supply link establishment device 100 of the spaceborne base station according to the embodiments of the present invention may refer to the working process of the first power supply link establishment method of the spaceborne base station described in the above embodiments, and will not be elaborated here.

[0135] See Figure 10 , Figure 10 FIG. is a structural block diagram of a second power supply link establishment device 200 of a spaceborne base station provided by an embodiment of the present invention. The power supply link establishment device 200 of the spaceborne base station includes:

[0136] A security authentication module 21, which is used to trigger a security authentication process through a central unit of an on-orbit base station, and perform security authentication on the terminal identification information when receiving the terminal identification information sent by the central unit; wherein, the terminal identification information is obtained by a distribution unit of the on-orbit base station, and the central unit sends a context establishment request to the distribution unit, so that the distribution unit instructs a power feeding terminal to return a security mode completion message carrying the terminal identification information.

[0137] An identity confirmation message sending module 22, which is used to return an identity confirmation message to the central unit after the security authentication is passed, so that the central unit sends a power feeding link establishment instruction to the distribution unit to establish a power feeding link between the on-orbit base station and the power feeding terminal.

[0138] Specifically, the security authentication module 21 is used to: receive an initial request message sent by the central unit, trigger a security authentication process and return a security parameter configuration message to the central unit; wherein, the security parameter configuration message carries configuration parameters for data integrity protection and encryption.

[0139] Specifically, the context establishment request carries priority scheduling information for establishing a power feeding link, and the priority scheduling information is used to instruct the distribution unit to take establishing a power feeding link as a high-priority scheduling task.

[0140] Specifically, when establishing an RRC connection with the on-orbit base station, the power feeding terminal adds an information field indicating the access type of the power feeding terminal to the RRC establishment request or RRC establishment completion message sent to the distribution unit, so that the distribution unit sends an uplink forwarding message carrying the indication of the access type of the power feeding terminal to the central unit.

[0141] Specifically, after receiving the context establishment request, the distribution unit sends a security mode command to the power feeding terminal, so that the power feeding terminal returns a security mode completion message carrying the terminal identification information to the distribution unit.

[0142] Specifically, after receiving the power feeding link establishment instruction, the distribution unit triggers an RRC air interface reconfiguration process with the power feeding terminal to establish a power feeding link between the on-orbit base station and the power feeding terminal.

[0143] It should be noted that the working processes of the various modules in the power feeding link establishment device 200 of the on-orbit base station described in the embodiments of the present invention can refer to the working process of the first power feeding link establishment method of the on-orbit base station described in the above embodiments, and will not be elaborated here.

[0144] See Figure 11 , Figure 11FIG. 0 is a structural block diagram of a third feeder link establishment device 300 for a spaceborne base station provided by an embodiment of the present invention. The feeder link establishment device 300 for the spaceborne base station includes:

[0145] An uplink forwarding message sending module 31, configured to send an uplink forwarding message carrying an indication of the access type of a feeder terminal to a central unit of the spaceborne base station, so that the central unit triggers a security authentication process of a security module in the spaceborne base station;

[0146] A feeder terminal indication module 32, configured to, when receiving a context establishment request sent by the central unit, instruct the feeder terminal to return a security mode completion message carrying terminal identification information;

[0147] The uplink forwarding message sending module 31 is further configured to send an uplink forwarding message carrying terminal identification information to the central unit, so that the central unit sends the terminal identification information to the security module, and the security module performs security authentication on the terminal identification information;

[0148] A feeder link establishment module 33, configured to establish a feeder link between the spaceborne base station and the feeder terminal when receiving a feeder link establishment indication sent by the central unit; wherein, when the central unit receives an identity confirmation message returned by the security module after successful security authentication, the central unit sends a feeder link establishment indication to the distribution unit.

[0149] Specifically, after receiving an uplink forwarding message carrying an indication of the access type of a feeder terminal, the central unit sends an initial request message to a security module in the spaceborne base station, so that the security module triggers a security authentication process and returns a security parameter configuration message; wherein, the security parameter configuration message carries configuration parameters for data integrity protection and encryption.

[0150] Specifically, the context establishment request carries priority scheduling information for establishing a feeder link, and the priority scheduling information is used to instruct the distribution unit to take establishing a feeder link as a high-priority scheduling task.

[0151] Specifically, when establishing an RRC connection with the spaceborne base station, the feeder terminal adds an information field indicating the access type of the feeder terminal to an RRC establishment request or an RRC establishment completion message sent to the distribution unit, so that the distribution unit sends an uplink forwarding message carrying an indication of the access type of the feeder terminal to the central unit.

[0152] Specifically, the feeder link establishment device 300 further includes:

[0153] A security mode command sending module, configured to send a security mode command to the power feeding terminal after receiving the context establishment request sent by the central unit, so that the power feeding terminal returns a security mode completion message carrying terminal identification information.

[0154] Specifically, the power feeding link establishment module 33 is configured to: after receiving the power feeding link establishment indication sent by the central unit, trigger an RRC air interface reconfiguration process with the power feeding terminal to establish a power feeding link between the spaceborne base station and the power feeding terminal.

[0155] It should be noted that the working processes of the various modules in the power feeding link establishment device 300 of the spaceborne base station described in the embodiments of the present invention can refer to the working process of the first power feeding link establishment method of the spaceborne base station described in the above embodiments, and will not be elaborated here.

[0156] See Figure 12 , Figure 12 is a structural block diagram of a fourth power feeding link establishment device 400 of a spaceborne base station provided by an embodiment of the present invention. The power feeding link establishment device 400 of the spaceborne base station includes:

[0157] A request message sending module 41, configured to send a request message carrying an indication of the access type of the power feeding terminal to a distribution unit in the spaceborne base station, so that the distribution unit sends an uplink forwarding message carrying an indication of the access type of the power feeding terminal to the central unit of the spaceborne base station, and the central unit triggers a security authentication process of a security module in the spaceborne base station;

[0158] A security mode completion message sending module 42, configured to send a security mode completion message carrying terminal identification information to the distribution unit, and forward the terminal identification information to the security module through the central unit, so that the security module performs security authentication on the terminal identification information; wherein, after triggering the security authentication process of the security module in the spaceborne base station, the central unit sends a context establishment request to the distribution unit, so that the distribution unit instructs the power feeding terminal to return a security mode completion message;

[0159] A power feeding link establishment module 43, configured to establish a power feeding link with the spaceborne base station after the security authentication is passed.

[0160] Specifically, after receiving the uplink forwarding message carrying an indication of the access type of the power feeding terminal, the central unit sends an initial request message to the security module in the spaceborne base station, so that the security module triggers a security authentication process and returns a security parameter configuration message; wherein, the security parameter configuration message carries configuration parameters for integrity protection and encryption of data.

[0161] Specifically, the context establishment request carries priority scheduling information for establishing a power feeding link, and the priority scheduling information is used to instruct the distribution unit to take establishing the power feeding link as a scheduling task with high priority.

[0162] Specifically, the request message is an RRC establishment request or an RRC establishment completion message sent by the power feeding terminal when establishing an RRC connection with the spaceborne base station.

[0163] Specifically, after receiving the context establishment request, the distribution unit sends a security mode command to the power feeding terminal, so that the power feeding terminal returns a security mode completion message carrying terminal identification information to the distribution unit.

[0164] Specifically, after receiving the power feeding link establishment indication, the distribution unit triggers an RRC radio interface reconfiguration process with the power feeding terminal to establish the power feeding link between the spaceborne base station and the power feeding terminal.

[0165] It should be noted that the working processes of the various modules in the power feeding link establishment device 400 of the spaceborne base station according to the embodiments of the present invention may refer to the working process of the first power feeding link establishment method of the spaceborne base station described in the above embodiments, and will not be elaborated herein.

[0166] See Figure 13 , Figure 13 FIG. is a structural block diagram of a power feeding link establishment device 500 of a spaceborne base station provided by an embodiment of the present invention. The power feeding link establishment device 500 of the spaceborne base station includes a processor 51, a memory 52, and a computer program stored in the memory 52 and executable on the processor 51. When the processor 51 executes the computer program, the steps in the embodiments of the above various power feeding link establishment methods of the spaceborne base station are implemented, such as steps S11 to S14, S21 to S22, S31 to S34, and S41 to S43.

[0167] Exemplarily, the computer program can be divided into one or more modules / units, and the one or more modules / units are stored in the memory 52 and executed by the processor 51 to complete the present invention. The one or more modules / units can be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the computer program in the power feeding link establishment device 500 of the spaceborne base station.

[0168] The power feeding link establishment device 500 of the spaceborne base station may include, but is not limited to, a processor 51 and a memory 52. Those skilled in the art can understand that the schematic diagram is only an example of the power feeding link establishment device 500 of the spaceborne base station, and does not constitute a limitation on the power feeding link establishment device 500 of the spaceborne base station. It may include more or fewer components than those shown in the figure, or combine certain components, or different components. For example, the power feeding link establishment device 500 of the spaceborne base station may also include input / output devices, network access devices, buses, etc.

[0169] The processor 51 may be a central processing unit (CPU), or may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The processor 51 is the control center of the power feeding link establishment device 500 of the spaceborne base station, and connects all parts of the power feeding link establishment device 500 of the spaceborne base station through various interfaces and lines.

[0170] The memory 52 can be used to store the computer programs and / or modules. The processor 51 realizes various functions of the power feeding link establishment device 500 of the spaceborne base station by running or executing the computer programs and / or modules stored in the memory 52, and by calling the data stored in the memory 52. The memory 52 mainly includes a program storage area and a data storage area. Among them, the program storage area can store an operating system, application programs required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the mobile phone (such as audio data, phone book, etc.), etc. In addition, the memory 52 may include high-speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0171] Among them, if the modules / units integrated in the feeder link establishment device 500 of the spaceborne base station are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such an understanding, to implement all or part of the processes in the above-described embodiment methods of the present invention, it can also be completed by instructing relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor 51, the steps of the above-described various method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in the form of source code, object code, executable file, or some intermediate form, etc. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disc, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal, and software distribution medium, etc.

[0172] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A method for establishing a feeder link of a spaceborne base station, characterized in that, Applied to the central unit of a spaceborne base station, the method includes: When receiving an uplink forwarding message carrying an indication of the access type of the power feeding terminal sent by the distributed unit of the spaceborne base station, triggering the security authentication process of the security module in the spaceborne base station; Sending a context establishment request to the distributed unit, so that the distributed unit instructs the power feeding terminal to return a security mode completion message carrying the terminal identification information; When receiving an uplink forwarding message carrying the terminal identification information sent by the distributed unit, sending the terminal identification information to the security module, so that the security module performs security authentication on the terminal identification information; When receiving the identity confirmation message returned by the security module after successful security authentication, sending a power feeding link establishment indication to the distributed unit to establish the power feeding link between the spaceborne base station and the power feeding terminal.

2. The method for establishing a feeding link of a spaceborne base station according to claim 1, wherein The triggering of the security authentication process of the security module in the spaceborne base station includes: Sending an initial request message to the security module in the spaceborne base station, so that the security module triggers the security authentication process and returns a security parameter configuration message; wherein, the security parameter configuration message carries configuration parameters for data integrity protection and encryption.

3. The method for establishing a feeding link of a spaceborne base station according to claim 1, characterized in that, The context establishment request carries priority scheduling information for establishing the power feeding link, and the priority scheduling information is used to instruct the distributed unit to take establishing the power feeding link as a high-priority scheduling task.

4. The method for establishing a feeding link of a spaceborne base station according to claim 1, characterized in that, When establishing an RRC connection with the spaceborne base station, the power feeding terminal adds an information field indicating the access type of the power feeding terminal to the RRC establishment request or RRC establishment completion message sent to the distributed unit, so that the distributed unit sends an uplink forwarding message carrying the indication of the access type of the power feeding terminal to the central unit.

5. The method for establishing a feeding link of a spaceborne base station according to claim 1, characterized in that After receiving the context establishment request, the distributed unit sends a security mode command to the power feeding terminal, so that the power feeding terminal returns a security mode completion message carrying the terminal identification information to the distributed unit.

6. The method for establishing a feeder link of a spaceborne base station according to claim 1, characterized in that, After receiving the power feeding link establishment indication, the distributed unit triggers an RRC air interface reconfiguration process with the power feeding terminal to establish the power feeding link between the spaceborne base station and the power feeding terminal.

7. A method for establishing a feeding link of a spaceborne base station, characterized in that, Applied to the security module of a spaceborne base station, the method includes: After triggering the security authentication process through the central unit of the spaceborne base station, when receiving the terminal identification information sent by the central unit, performing security authentication on the terminal identification information; wherein, the terminal identification information is obtained through the distributed unit of the spaceborne base station, and the central unit sends a context establishment request to the distributed unit, so that the distributed unit instructs the power feeding terminal to return a security mode completion message carrying the terminal identification information; Returning an identity confirmation message to the central unit after successful security authentication, so that the central unit sends a power feeding link establishment indication to the distributed unit to establish the power feeding link between the spaceborne base station and the power feeding terminal.

8. The method for establishing a feeding link of a spaceborne base station according to claim 7, wherein, The triggering of the security authentication process through the central unit of the spaceborne base station includes: Upon receiving the initial request message sent by the central unit, trigger the security authentication process and return a security parameter configuration message to the central unit; wherein, the security parameter configuration message carries configuration parameters for data integrity protection and encryption.

9. The method for establishing a feeding link of a spaceborne base station according to claim 7, wherein, The context establishment request carries priority scheduling information for establishing a feeder link, and the priority scheduling information is used to instruct the distribution unit to take establishing the feeder link as a high-priority scheduling task.

10. The method for establishing a feeding link of a spaceborne base station according to claim 7, characterized in that, When the feeder terminal establishes an RRC connection with the spaceborne base station, add an information field indicating the access type of the feeder terminal to the RRC establishment request or RRC establishment completion message sent to the distribution unit, so that the distribution unit sends an uplink forwarding message carrying the access type of the feeder terminal to the central unit.

11. The method for establishing a feeding link of a spaceborne base station according to claim 7, characterized in that, After receiving the context establishment request, the distribution unit sends a security mode command to the feeder terminal, so that the feeder terminal returns a security mode completion message carrying the terminal identification information to the distribution unit.

12. The method for establishing a feeding link of a spaceborne base station according to claim 7, wherein After receiving the feeder link establishment indication, the distribution unit triggers an RRC air interface reconfiguration process with the feeder terminal to establish the feeder link between the spaceborne base station and the feeder terminal.

13. A method for establishing a feeding link of a spaceborne base station, characterized in that, Applied to the distribution unit of the spaceborne base station, the method includes: Send an uplink forwarding message carrying the access type of the feeder terminal to the central unit of the spaceborne base station, so that the central unit triggers the security authentication process of the security module in the spaceborne base station and returns a security parameter configuration message; When receiving the context establishment request sent by the central unit, instruct the feeder terminal to return a security mode completion message carrying the terminal identification information; Send an uplink forwarding message carrying the terminal identification information to the central unit, so that the central unit sends the terminal identification information to the security module, and the security module performs security authentication on the terminal identification information; When receiving the feeder link establishment indication sent by the central unit, establish the feeder link between the spaceborne base station and the feeder terminal; wherein, when the central unit receives the identity confirmation message returned by the security module after successful security authentication, it sends a feeder link establishment indication to the distribution unit.

14. The method for establishing a feeding link of a spaceborne base station according to claim 13, wherein After receiving the uplink forwarding message carrying the access type of the feeder terminal, the central unit sends an initial request message to the security module in the spaceborne base station, so that the security module triggers the security authentication process and returns a security parameter configuration message; wherein, the security parameter configuration message carries configuration parameters for data integrity protection and encryption.

15. The method for establishing a feeding link of the spaceborne base station according to claim 13, wherein The context establishment request carries priority scheduling information for establishing a feeder link, and the priority scheduling information is used to instruct the distribution unit to take establishing the feeder link as a high-priority scheduling task.

16. The method for establishing a feeder link of a spaceborne base station according to claim 13, wherein, When the feeder terminal establishes an RRC connection with the spaceborne base station, add an information field indicating the access type of the feeder terminal to the RRC establishment request or RRC establishment completion message sent to the distribution unit, so that the distribution unit sends an uplink forwarding message carrying the access type of the feeder terminal to the central unit.

17. The method for establishing a feeding link of a spaceborne base station according to claim 13, characterized in that, After receiving the context establishment request sent by the central unit, the method further includes: Sending a security mode command to the power feeding terminal, so that the power feeding terminal returns a security mode completion message carrying terminal identification information.

18. The method for establishing a feeder link of a spaceborne base station according to claim 13, wherein, After receiving the power feeding link establishment indication sent by the central unit, the method further includes: Triggering an RRC radio interface reconfiguration process with the power feeding terminal to establish a power feeding link between the spaceborne base station and the power feeding terminal.

19. A method for establishing a feeding link of a spaceborne base station, characterized in that, Applied to the power feeding terminal, the method includes: Sending a request message carrying an indication of the access type of the power feeding terminal to the distribution unit in the spaceborne base station, so that the distribution unit sends an uplink forwarding message carrying an indication of the access type of the power feeding terminal to the central unit of the spaceborne base station, and the central unit triggers a security authentication process of the security module in the spaceborne base station; Sending a security mode completion message carrying terminal identification information to the distribution unit, and forwarding the terminal identification information to the security module through the central unit, so that the security module performs security authentication on the terminal identification information; wherein, after triggering the security authentication process of the security module in the spaceborne base station, the central unit sends a context establishment request to the distribution unit, so that the distribution unit instructs the power feeding terminal to return a security mode completion message; Establishing a power feeding link with the spaceborne base station after the security authentication is passed.

20. The method for establishing a feeder link of a spaceborne base station according to claim 19, wherein After receiving the uplink forwarding message carrying an indication of the access type of the power feeding terminal, the central unit sends an initial request message to the security module in the spaceborne base station, so that the security module triggers a security authentication process and returns a security parameter configuration message; wherein, the security parameter configuration message carries configuration parameters for integrity protection and encryption of data.

21. The method for establishing a feeding link of a spaceborne base station according to claim 19, wherein, The context establishment request carries priority scheduling information for establishing a power feeding link, and the priority scheduling information is used to instruct the distribution unit to take establishing a power feeding link as a high-priority scheduling task.

22. The method for establishing a feeding link of the spaceborne base station according to claim 19, characterized in that, The request message is an RRC establishment request or an RRC establishment completion message sent by the power feeding terminal when establishing an RRC connection with the spaceborne base station.

23. The method for establishing a feeding link of a spaceborne base station according to claim 19, wherein, After receiving the context establishment request, the distribution unit sends a security mode command to the power feeding terminal, so that the power feeding terminal returns a security mode completion message carrying terminal identification information to the distribution unit.

24. The method for establishing a feeding link of a spaceborne base station according to claim 19, wherein, After receiving the power feeding link establishment indication, the distribution unit triggers an RRC radio interface reconfiguration process with the power feeding terminal to establish a power feeding link between the spaceborne base station and the power feeding terminal.

25. A feeder link establishment device for a spaceborne base station, characterized in that Including: A security authentication process triggering module, configured to trigger a security authentication process of the security module in the spaceborne base station when receiving an uplink forwarding message carrying an indication of the access type of the power feeding terminal sent by the distribution unit of the spaceborne base station; A context establishment request sending module, configured to send a context establishment request to the distribution unit, so that the distribution unit instructs the power feeding terminal to return a security mode completion message carrying terminal identification information; The terminal identification information sending module is configured to, when receiving the uplink forwarding message carrying the terminal identification information sent by the distribution unit, send the terminal identification information to the security module, so that the security module performs security authentication on the terminal identification information; The power supply link establishment indication sending module is configured to, when receiving the identity confirmation message returned by the security module after successful security authentication, send a power supply link establishment indication to the distribution unit to establish the power supply link between the spaceborne base station and the power supply terminal.

26. A feeder link establishment device for a spaceborne base station, characterized in that, Comprising: The security authentication module is configured to, after triggering the security authentication process by the central unit of the spaceborne base station, perform security authentication on the terminal identification information when receiving the terminal identification information sent by the central unit; wherein, the terminal identification information is obtained by the distribution unit of the spaceborne base station, and the central unit sends a context establishment request to the distribution unit, so that the distribution unit instructs the power supply terminal to return a security mode completion message carrying the terminal identification information; The identity confirmation message sending module is configured to return an identity confirmation message to the central unit after successful security authentication, so that the central unit sends a power supply link establishment indication to the distribution unit to establish the power supply link between the spaceborne base station and the power supply terminal.

27. A feeding link establishment device for a spaceborne base station, characterized in that Comprising: The uplink forwarding message sending module is configured to send an uplink forwarding message carrying an indication of the access type of the power supply terminal to the central unit of the spaceborne base station, so that the central unit triggers the security authentication process of the security module in the spaceborne base station; The power supply terminal indication module is configured to, when receiving the context establishment request sent by the central unit, instruct the power supply terminal to return a security mode completion message carrying the terminal identification information; The uplink forwarding message sending module is further configured to send an uplink forwarding message carrying the terminal identification information to the central unit, so that the central unit sends the terminal identification information to the security module, and the security module performs security authentication on the terminal identification information; The power supply link establishment module is configured to, when receiving the power supply link establishment indication sent by the central unit, establish the power supply link between the spaceborne base station and the power supply terminal; wherein, the central unit sends a power supply link establishment indication to the distribution unit when receiving the identity confirmation message returned by the security module after successful security authentication.

28. A feeder link establishment device for a spaceborne base station, characterized in that, Comprising: The request message sending module is configured to send a request message carrying an indication of the access type of the power supply terminal to the distribution unit in the spaceborne base station, so that the distribution unit sends an uplink forwarding message carrying an indication of the access type of the power supply terminal to the central unit of the spaceborne base station, and the central unit triggers the security authentication process of the security module in the spaceborne base station; A secure mode completion message sending module, configured to send a secure mode completion message carrying terminal identification information to the distribution unit, and forward the terminal identification information to the security module through the central unit, so that the security module performs security authentication on the terminal identification information; wherein, after triggering the security authentication process of the security module in the spaceborne base station, the central unit sends a context establishment request to the distribution unit, so that the distribution unit instructs the power feeding terminal to return a secure mode completion message; A power feeding link establishment module, configured to establish a power feeding link with the spaceborne base station after the security authentication is passed.

29. A feeding link establishment device for a spaceborne base station, characterized in that, It includes a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the power feeding link establishment method of the spaceborne base station according to any one of claims 1 to 24.

30. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored computer program. When the computer program runs, it controls the device where the computer-readable storage medium is located to execute the power feeding link establishment method of the spaceborne base station according to any one of claims 1 to 24.

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