Research on Routing Algorithms in Space-Based Integrated Information Network

Space-based Integrated Information Network (SIIN) is a newly proposed conception in recent years which means information are processed, interlinked and transmitted in multi-spacecraft. LEO satellite network is a basic and important part in SIIN, so several routing algorithms of connection oriented routing strategy and connectionless routing strategy in LEO satellite networks are introduced respectively in this paper, the advantages and disadvantages of the algorithms are discussed too. The current tendency is aiming at pushing the IP technology to satellite networks, so in this paper three IP-based routing algorithms are discussed in particular. At last, the features of each routing protocol mentioned in the paper are summarized, and the problems need to be resolved in the following research are proposed.