%0 Journal Article
%A HOU Rong-hui
%A XU Wei-lin
%A WANG Xuan
%T Dynamic Path Switching Technology for LEO Satellite Networks
%D 
%R 10.13190/j.jbupt.2019-114
%J Journal of Beijing University of Posts and Telecommunications
%P 80-86,109
%V 43
%N 2
%X For constellation low earth orbit (LEO) satellite networks, aiming at the problem of resource utilization decline caused by long reconfiguration time of dynamic routing technology, a path switching mechanism based on prediction is proposed. According to the satellite flight trajectory, the duration of inter-satellite link is predicted, so the available lifetime of the current transmission path can be estimated. With the proposed routing strategy, the route reconfiguration is initiated in time before the current path is disconnected, therefore. The transmission interruption by changing to another newly established path can be avoided. Moreover, according to the current path cost and the global load state of the network, a path cost metric is designed to select an optimal path. Simulations show that the proposed routing scheme can effectively reduce the packet loss rate of data forwarding and improve the overall throughput of the network.
%U https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2019-114