Method and device for improving pipeline safety for space-terrestrial network architecture

Patent metadata

Field	Value
Publication number	US-12470285-B2
Application number	US-202419002805-A
Country	US
Kind code	B2
Filing date	Dec 27, 2024
Priority date	Jun 21, 2023
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

A method and a device for improving pipeline safety of a space-terrestrial network architecture. The method pre-registers the profile of a base station in the network repository function network element of a 5G core network; after receiving a relay pipeline connection establishment request initiated by a base station, a relay satellite sends a network function verification request to the network repository function network element through a network expose function network element; after receiving a response to a network function discovery request of the base station, the network expose function network element sets the corresponding verification result of the base station according to whether there is base station registration information and responds to a verification request of the network element; and finally, the relay satellite verifies the verification result cell carried in the received response to determine the legality of the current access to the base station.

First claim

What is claimed is:

1 . A method for improving pipeline safety of a space-terrestrial network architecture, comprising:
step S1, when a legal base station is connected to a 5G core network or a network repository function network element updates a profile of a network function network element based on manual configuration, pre-registering a profile of a base station in the network repository function network element of the 5G core network; step S2, after receiving a relay pipeline connection establishment request initiated by the base station, initiating, by a relay satellite, a network element verification request carrying the profile of the base station to a network expose function network element based on the profile of the base station in the relay pipeline connection establishment request, and sending a network function search request to the network repository function network element through the network expose function network element; step S3, after receiving the network function search request, returning, by the network repository function network element, a base station query result to the network expose function network element according to a registration information; and when the registration information of the base station exists, setting a verification result in a verification result cell as “REGISTERED” by the network expose function network element; and otherwise, setting the verification result as “NOT EXIST”, and responding to the network element verification request of the relay satellite; and step S4, responding and checking, by the relay satellite, the carried verification result cell according to the received network element verification request, when the verification result cell carries the verification result of “REGISTERED”, accepting the relay pipeline connection establishment request of the base station; and when the verification result cell carries the verification result of “NOT EXIST”, rejecting the relay pipeline connection establishment request of the base station.

2 . The method for improving pipeline safety of the space-terrestrial network architecture according to claim 1 , wherein a connection between the legal base station and the 5G core network in the step S1 comprises:
taking the legal base station and the 5G core network as network function nodes, and registering the profile of the base station to the network repository function network element of the 5G core network through a registration service of the network repository function network element of the 5G core network, wherein the profile of the base station in a registration process is carried through a newly added cell structure; and wherein the profile of the base station comprises a mandatory parameter and optional parameters, and the mandatory parameter comprises a global base station node identity; and the optional parameters comprise a name of a base station node, a list of supported tracking areas and tracking area items supported in the list, as well as tracking area codes under the tracking area items.

3 . The method for improving pipeline safety of the space-terrestrial network architecture according to claim 2 , wherein in the step S1, said pre-registering the profile of the base station in the network repository function network element of the 5G core network further comprises:
adding the profile of the base station into a network function profile carried in a registration request of the network repository function network element, and registering to the network repository function network element; when a registration is successful, returning a registration success status code and a corresponding network function profile, otherwise returning a registration failure status code or a relocation status code; and in a failure status, re-selecting an instance of the network repository function network element by the base station, and performing a base station registration process again for the selected instance of the network repository function network element.

4 . The method for improving pipeline safety of the space-terrestrial network architecture according to claim 2 , wherein the network function search request sent by the network expose function network element carries query parameters of the profile of the base station, and the network repository function network element, after receiving the network function search request, continues to use an existing network function discovery service to search the profile pre-registered for the base station.

5 . The method for improving pipeline safety of the space-terrestrial network architecture according to claim 4 , wherein the query parameters of the profile of the base station are the mandatory parameter and the optional parameters consistent with the profile of the base station, and wherein the mandatory parameter is configured to determine the verification result, and the optional parameters are configured to provide a subsidiary information of the base station.

6 . The method for improving pipeline safety of the space-terrestrial network architecture according to claim 1 , wherein said after receiving the network function search request, returning the base station query result to the network expose function network element by the network repository function network element according to the registration information further comprises:
checking whether the registration information matches the profile of the base station carried in the query request by the network repository function network element, and returning matching information and setting a request response status code as “success query”; and when the network function search request is not capable of being processed, setting the request response status code as “invalid query” and retransmitting the network function search request, or setting the request response status code as “relocation” and carrying a resource relocation header in a response, representative of that the search request needs to be retransmitted and sent to a location specified by the resource relocation header.

7 . The method for improving pipeline safety of the space-terrestrial network architecture according to claim 6 , wherein in the step S4, after receiving the response to the network function search request, when the request response status code is “query success”, the relay satellite admits or rejects the base station initiating the relay pipeline connection establishment request according to the carried verification result; when the request response status code is “invalid query”, the relay satellite needs to retransmit the network element verification request; when the request response status code is a relocation status code and the resource relocation header is carried in the response, the relay satellite needs to retransmit the network element verification request to the location specified by the resource relocation header; and when the relay satellite fails to obtain a valid verification result after trying the network element verification request for a preset number of times, the relay satellite rejects the relay pipeline connection establishment request of the base station.

8 . The method for improving pipeline safety of the space-terrestrial network architecture according to claim 1 , further comprising: returning a response to the network function search request to a corresponding query relay satellite by the network expose function network element; when the response to the network function search request returned by the network repository function network element is not capable of being processed, setting a request response status code as “invalid request”; or setting the request response status code as “relocation” and carrying the resource relocation heade

Assignees

• Zhejiang Lab

Inventors

• Hao Nan
• Zhang Xingming
• Zhu Xiangming
• Zhang Fujun

Classifications

• H04W60/00

  Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration · CPC title

• H04W12/108

  Source integrity · CPC title

• H04W12/084

  using delegated authorisation, e.g. open authorisation [OAuth] protocol · CPC title

• H04W84/06

  Airborne or Satellite Networks (space-based or airborne stations H04B7/185) · CPC title

• H04B7/1851 Primary

  Systems using a satellite or space-based relay (H04B7/18508, H04B7/18521 take precedence; providing specific services H04B7/18523 - H04B7/18576) · CPC title