Method and device for constructing integrated space-terrestrial network
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Solution Overview
Problem
The existing terrestrial IP network architecture faces challenges in efficiently integrating and cooperating with satellite networks due to high spatial-temporal dynamics, heterogeneous architectures, and high symbol error rates, leading to instability and scalability issues in space-terrestrial network integration.
Innovation Solution
A method and device for constructing an integrated space-terrestrial network using a recursive-scalable scheme based on fixed satellite subpoint trajectories, involving obtaining a target constellation, standardizing satellite motion, extending topological structures, dividing geographical cells, and performing recursive incremental deployments to achieve unified spatial-temporal benchmarks and stable, efficient network integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional IP network architecture is used for terrestrial networks, then network stability is maintained, but integration with satellite networks becomes difficult due to high spatial-temporal dynamics and heterogeneous architectures
Solution Approach 1:
The patent transforms satellite orbital parameters (period, height, inclination) into standardized values that create fixed subpoint trajectories. By changing the period to integer multiples of the standard day and adjusting orbital heights to specific standardized values, the satellite ground tracks become predictable and repeatable, enabling stable network architecture despite satellite motion
Solution Approach 2:
The patent divides the satellite constellation into modular units with standardized orbital parameters. Each satellite group follows standardized trajectories, allowing the network to be segmented into manageable regions with predictable communication patterns, facilitating both stability and adaptability
2Area of stationary object
If satellites move at high speed relative to Earth, then global coverage is achieved, but network topology changes frequently causing instability
Solution Approach 1:
The patent employs periodic orbital motion with periods that are integer multiples of the standard day. This causes satellites to repeatedly trace the same ground tracks, creating periodic and predictable network topologies that are stable despite the continuous motion and high speed of satellites
Solution Approach 2:
The patent creates multiple copies of the same orbital trajectory pattern across different satellite groups. Each satellite group replicates the standardized subpoint trajectory, ensuring that network topology patterns are copied consistently across the constellation, providing stability through repetition
3Adaptability or versatility
If recursive incremental deployment is performed, then network scalability is improved, but deployment complexity increases
Solution Approach 1:
The patent establishes standardized orbital parameters and fixed subpoint trajectories in advance before deployment. By pre-defining the orbital periods, heights, and inclination angles that will produce predictable ground tracks, the complexity of incremental deployment is reduced as each new satellite group follows predetermined patterns
Data Source
AI summary
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.