宇航学报

宇航学报 ›› 2012, Vol. 33 ›› Issue (10): 1445-1452.doi: 10.3873/j.issn.1000-1328.2012.10.012

• 电子信息 • 上一篇    下一篇

一种GEO/LEO双层卫星网络路由算法及仿真研究

杨力1,2, 杨校春1,2, 潘成胜1,2   

  1. （1.大连大学通信与网络重点实验室，大连 116622； 2.大连大学信息工程学院，大连 116622）
  • 收稿日期:2011-10-27 修回日期:2012-01-16 出版日期:2012-10-15 发布日期:2012-10-22
  • 基金资助:
    国家863计划项目（2011AAXX04）；辽宁省创新团队项目（LT2010007）

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

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摘要： 时间虚拟化策略的时间片过短将影响路由性能，提出一种基于GEO/LEO双层卫星网络的时间虚拟化和分层管理的路由算法（VLRA），对时间虚拟化策略进行合理改进，通过新的分层管理思想，在每个时间片开始进行路由计算和更新。分析和仿真验证表明，改进的时间虚拟化策略得到的时间片更合理，利于网络的路由和通信。GEO/LEO双层卫星网络下VLRA算法时延稳定，并具有较好的丢包率和吞吐量性能。

关键词: 时间虚拟化, GEO/LEO双层卫星网络, 分层管理, 路由算法, 仿真

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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