Journal of Astronautics ›› 2012, Vol. 33 ›› Issue (10): 1445-1452.doi: 10.3873/j.issn.1000-1328.2012.10.012

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A GEO/LEO DoubleLayered Satellite Network Routing Algorithm and Its Simulation

YANG Li1,2, YANG Xiao-chun1,2, PAN Cheng-sheng1,2   

  1. (1. Communication and Network Laboratory, Dalian University, Dalian 116622, China;2. College of Information Engineering, Dalian University, Dalian 116622, China)
  • Received:2011-10-27 Revised:2012-01-16 Online:2012-10-15 Published:2012-10-22

Abstract:

The snapshot by virtualized time strategy is too short to improve the routing performance, thus, a  virtualized time and layered management routing algorithm (VLRA) based on GEO/LEO doublelayered satellite networks is developed in this paper. The new routing algorithm improves the virtualized time strategy reasonably and realizes to calculate and update routing by adopting the new idea of layered management at the beginning of each snapshot. Through analysis and simulation, it’s shown that the improved virtualized time strategy obtains more rational snapshot, and is helpful for the network routing and communication. Finally, stable delay, better packet loss rate as well as throughput performance are obtained when VLRA is implemented in GEO/LEO doublelayered satellite networks.


 

Key words: Virtualized time, geO/LEO doublelayered satellite networks, Layered management, Routing algorithm, Simulation

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