中国空间科学技术

中国空间科学技术

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具有星际链路的低轨卫星通信系统的路由策略研究

姚晔,朱立东,吴诗其   

  1. 电子科技大学通信与信息工程学院,电子科技大学通信与信息工程学院,电子科技大学通信与信息工程学院 成都610054 ,成都610054 ,成都610054
  • 发布日期:2005-08-25

Research on Routing Policies for Low Earth Orbit Satellite Communication System with Intersatellite Links

Yao Ye Zhu Lidong Wu Shiqi (Institute of Communication and Information Engineering of UESTC, Chengdu 610054)   

  • Online:2005-08-25
  • Supported by:
    国家自然科学基金(批准号60372013)资助项目

被引次数

9

摘要： 结合卫星网路的拓扑结构和运行规律,提出了一种通信量和拓扑自适应的路由算法,可以增大系统的流量。由于LEO系统的动态特性,已经建立的呼叫连接可能由于切换失败而中断原来的通信,因此,文章在研究路由算法时考虑为切换呼叫动态地预留信道,以降低切换失败概率。仿真结果表明,此策略可以改善系统的性能。

关键词: 星际通信, 网络结构, 卫星链路

Abstract: The traffic and topology adaptive routing algorithm conbined with topology structure and operating rules is proposed in this paper, which can increase the throughput of the system. Also, due to the dynamic topology of LEO system, the connection may be interrupted because of handover failure. In order to minimize the handover failure probability, dynamic channel reservation strategies are also taken into account at the same time. The simulation results show that the system performance can be improved as a result of dynamic channel reservation for handover calls.