Routing Technology Research for LEO Satellite Constellation Networks

Because of the particular features of LEO satellite networks,such as dynamic topology,non-homogeneous traffic distribution,limited power and processing,new satellite routing approaches should be developed.How to design simple and efficient routing algorithm becomes the hot topic of LEO satellite networks.Analyze the characteristics of LEO satellite networks,and then survey the current LEO satellite routing algorithms classified with the geometric model,handoff and onboard processing capability.Typical algorithms of each class are presented and their advantages,suitable environment and shortcomings with a detailed comprehensive comparison are discussed.The end of the paper points out the future research field for LEO satellite routing problem.