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A Cooperative Routing Scheme Using Inter-Satellite Links to Assist Data Downloading for LEO Satellite Networks
Zijian Yang1,2, Huijie Liu1,2, Jifeng Jin1,2
1Innovation Academy for Microsatellites of CAS, Shanghai 201203, China.
Sensors (Basel, Switzerland)
|October 27, 2022
Summary
This study introduces a cooperative routing scheme for low earth orbit (LEO) satellite networks to maximize data throughput. By intelligently routing packets through well-resourced feeder links, it overcomes Ka-band atmospheric fading bottlenecks.
Area of Science:
- Satellite Communications
- Network Engineering
Background:
- Low Earth Orbit (LEO) satellite networks offer internet access in areas lacking cellular coverage.
- Ka-band Multiple-Input Multiple-Output (MIMO) enhances feeder link bandwidth but faces atmospheric fading, limiting satellite network throughput.
Purpose of the Study:
- To propose a cooperative routing scheme to maximize feeder link resource utilization and overall network throughput.
- To address the throughput bottleneck caused by feeder link capacity limitations in LEO satellite networks.
Main Methods:
- Modeling of the satellite network system and Ka-band MIMO feeder links.
- Development of a Maximum-Flow-Minimum-Cost (MCMF) routing algorithm using two Linear Programs (LPs).
Main Results:
- The proposed cooperative routing scheme effectively utilizes feeder link bandwidth.
- Simulations demonstrate superior performance in throughput and reduced delay compared to the SiRRS method.
Conclusions:
- The cooperative routing scheme enhances data downloading throughput in LEO satellite networks.
- Optimizing feeder link resource allocation is crucial for overcoming atmospheric fading challenges and improving network performance.
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