Research on Distributed Routing Technology for LEO Satellite Network

During the development of 6G networks, cellular networks that rely solely on ground infrastructure cannot meet network coverage in remote areas. On this basis, the concept of Low Earth Orbit (LEO) satellites presents a unique solution to the coverage problem of 6G networks in special areas. Depending on the forwarding function provided by satellites and inter-satellite links (ISL), the LEO satellite network can achieve global network coverage. However, due to the huge scale of satellite constellation, how to achieve low-cost and reliable routing in satellite network research has become a huge problem. Based on the characteristics of LEO satellite networks combined with service requirements, this paper analyzes the research status of LEO satellite network routing protocols.