Research on New Methods of LEO Satellite Networks Routing

Satellite communication networks, as an effective complement to terrestrial communication networks, enable global coverage communications. The Low-orbit satellite network has the characteristics of low transmission delay, short operation period and global coverage communication, it has become a popular research direction in satellite communication networks. With the continuous development of digital and intelligent communication in the world, satellite network services continue to expand, and higher requirements are placed on network transmission performance. The traditional single-structure low-orbit satellite network using centralized routing has been unable to meet current needs.. Therefore, with the low-orbit satellite network as the core, people have conducted in-depth research on satellite communication network routing algorithms that meet the requirements of high-quality, high-efficiency and large-capacity communication. Especially in the three hot issues of low-orbit satellite network routing algorithms, a lot of research results have emerged, including: QoS-based artificial intelligence algorithm routing algorithm; multi-layer satellite network routing algorithm; satellite network multipath routing algorithm. Through the analysis and discussion of these problems and achievements, the idea of combining the three algorithms on demand is proposed, and the challenges are analyzed.