A Novel Routing Algorithm Based on Virtual Topology Snapshot in LEO Satellite Networks

Nowadays, communication technology is changing rapidly and satellite communication, as an important communication pattern, is playing a more and more important role. Due to lower system delay and lower power consumption in mobile terminal, LEO satellite communication will undoubtedly become an important development direction in satellite communication system in the future. In satellite communication networks, routing algorithms determine average delay and the average of traffic load thereby have significant influences on the performance of the system. In this paper, a novel routing algorithm based on virtual topology snapshot has been proposed and it inherits the advantage of lower delay in topology snapshot as well as solves the problems of poor robustness and adaptability. This algorithm has been proved more excellent performance than topology snapshot routing and distributed routing algorithm via simulation.