Abstract
In recent years, Low Earth Orbit (LEO) satellite network has aroused widespread concern in academia and industry. Unlike the abundant inter-satellite link (ISLs) resources, the bandwidth of feeder link established by satellites and earth stations (ESs) are limited, which has become the bottleneck of the entire LEO satellite network capacity. Therefore, making full use of the feeder link resources is essential to increase the throughput of the entire network. In this paper, we proposes a cooperation scheme to route the packets that cannot be downloaded smoothly to the appropriate satellite, and then download the packets to ESs. First, we propose the LEO satellite network with inter-satellite model, and formulate the cooperative routing scheme. Then, two linear programming problems are formulated and resolved within polynomial time. Finally, various simulations are constructed to evaluate the proposed algorithm, which shows the cooperative routing algorithm outperforms the existing Genetic algorithms in performance of delay and throughput.
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