Method and device for constructing integrated space-terrestrial network

Patent metadata

Field	Value
Publication number	US-12407407-B2
Application number	US-202218013227-A
Country	US
Kind code	B2
Filing date	Mar 24, 2022
Priority date	Oct 22, 2021
Publication date	Sep 2, 2025
Grant date	Sep 2, 2025

Abstract

Provided by the present application are a method and a device for constructing integrated space-terrestrial network, the method including: obtaining a target constellation and standardizing a relative motion between each target satellite in the target constellation and earth's surface according to a principle of making a satellite running in a recursive earth-repeat orbit have fixed satellite subpoint trajectories; obtaining a recursively extended topological structure according to the target constellation; according to the extended topological structure, dividing geographical cells and obtaining a mapping relationship between the geographical cells and the satellite subpoint trajectories to facilitate network addressing and networking management based on geographical location; and performing, based on a deployment rule, a recursive incremental deployment according to the extended satellite network topological structure, and realizing integrated space-terrestrial network.

First claim

What is claimed is:

1. A method for constructing integrated space-terrestrial network, comprising:
obtaining a target constellation and standardizing a relative motion between each target satellite in the target constellation and earth's surface according to a principle of making a satellite running in a recursive earth-repeat orbit have fixed satellite subpoint trajectories;
obtaining a recursively extended topological structure according to the target constellation;
according to the extended topological structure, dividing geographical cells and obtaining a mapping relationship between the geographical cells and the satellite subpoint trajectories to facilitate network addressing and networking management based on geographical location; and
performing, based on a deployment rule, a recursive incremental deployment according to the extended satellite network topological structure, and realizing integrated space-terrestrial network.

2. The method according to claim 1 , wherein, the obtaining the target constellation and standardizing the relative motion between each target satellite in the target constellation and earth's surface according to the principle of making the satellite running in the recursive earth-repeat orbit have fixed satellite subpoint trajectories comprises:
adjusting a period of the target satellite to make the target satellite form a fixed satellite subpoint trajectory;
setting an orbital height of the target satellite based on height adjustment rule to meet a full coverage of the target constellation for terrestrial communication; and
adjusting the period and the orbital height of the target satellite and forming the target constellation, to make each target satellite form a fixed satellite subpoint trajectory and meet the full coverage for terrestrial communication.

3. The method according to claim 1 , wherein, the obtaining the recursively extended topological structure according to the target constellation comprises:
constructing a base-class topological structure according to the target constellation and making each target satellite in the base-class topological structure share a same fixed satellite subpoint trajectory; and
recursively extending the base-class topological structure according to an extension rule and forming the extended topological structure.

4. The method according to claim 3 , after the constructing the base-class topological structure according to the target constellation and making each target satellite in the base-class topological structure share the same fixed satellite subpoint trajectory, further comprising:
setting a symmetric inter-satellite link mode for each target satellite in the base-class topological structure.

5. The method according to claim 4 , wherein, the recursively extending the base-class topological structure according to the extension rule and forming the extended topological structure comprises:
during recursively extending, maintaining original inter-orbit link and adding intra-orbit link for adjacent satellites after shifting a time interval.

6. The method according to claim 1 , wherein, the according to the extended topological structure, dividing geographical cells and obtaining the mapping relationship between the geographical cells and the satellite subpoint trajectories comprises:
dividing the geographical cells according to an area on earth's surface formed by intersection of the fixed satellite subpoint trajectory of each target constellation in the extended topological structure;
taking a preset location point of each geographical cell as an identification of each geographical cell; and
coding the divided geographical cells, obtaining a mapping relationship between a code of each geographical cell and each fixed satellite subpoint trajectory, and forming a network addressing based on geographical location.

7. The method according to claim 1 , wherein, the performing, based on the deployment rule, the recursive incremental deployment according to the extended satellite network topological structure, and realizing integrated space-terrestrial network comprises:
based on a principle of full coverage for terrestrial communication, deploying the extended satellite network topological structure layer by layer and reducing an orbital height with an increase of layers to form a network structure having a backbone network and an access network.

8. A device for constructing integrated space-terrestrial network, comprising a memory, a processor and a computer program stored in the memory and executable by the processor, wherein, when the program is executed by the processor, causes the processor to:
obtain a target constellation and standardize a relative motion between each target satellite in the target constellation and earth's surface according to a principle of making a satellite running in a recursive earth-repeat orbit have fixed satellite subpoint trajectories;
obtain a recursively extended topological structure according to the target constellation;
according to the extended topological structure, divide geographical cells and obtain a mapping relationship between the geographical cells and the satellite subpoint trajectories to facilitate network addressing and networking management based on geographical location; and
perform, based on a deployment rule, a recursive incremental deployment according to the extended satellite network topological structure, and realize integrated space-terrestrial network.

9. An electronic apparatus, comprising a memory, a processor and a computer program stored in the memory and executable by the processor, wherein, when the program is executed by the processor, causes the processor to implement a method for constructing integrated space-terrestrial network, wherein, the method comprises:
obtaining a target constellation and standardizing a relative motion between each target satellite in the target constellation and earth's surface according to a principle of making a satellite running in a recursive earth-repeat orbit have fixed satellite subpoint trajectories;
obtaining a recursively extended topological structure according to the target constellation;
according to the extended topological structure, dividing geographical cells and obtaining a mapping relationship between the geographical cells and the satellite subpoint trajectories to facilitate network addressing and networking management based on geographical location; and
performing, based on a deployment rule, a recursive incremental deployment according to the extended satellite network topological structure, and realizing integrated space-terrestrial network.

10. A non-transitory computer readable storage medium, having computer program stored therein, wherein, when the program is executed by the processor, causes the processor to implement the steps of a method for constructing integrated space-terrestrial network, comprising:
obtaining a target constellation and standardizing a relative motion between each target satellite in the target constellation and earth's surface according to a principle of making a satellite running in a recursive earth-repeat orbit have fixed satellite subpoint trajectories;
obtaining a recursively extended topological structure according to the target constellation;
according to the extended topological structure, dividing geographical cells and obtaining a mapping relationship between the geographical cells and the satellite subpoint trajectories to facilitate network addressing and networking management based on geographical location; and
performing, based on a deployment rule, a recursive incremental deployment according to the extended satellite network topological structure, and realizin

Assignees

• Univ Tsinghua

Inventors

• Li Yuanjie
• Li Hewu
• Liu Jiayi
• Liu Wei
• Liu Lixin
• Wu Qian
• Liu Jun
• Lai Zeqi

Classifications

• H04B7/18504

  Aircraft used as relay or high altitude atmospheric platform · CPC title

• H04B7/18521

  Systems of inter linked satellites, i.e. inter satellite service (for optical links between satellites H04B10/118) · CPC title

• H04B7/185

  Space-based or airborne stations; {Stations for satellite systems}(H04B7/204 takes precedence) · CPC title

• H04B7/18519 Primary

  Operations control, administration or maintenance · CPC title