宇航学报

宇航学报 ›› 2011, Vol. 32 ›› Issue (3): 660-664.doi: 10.3873/j.issn.1000-1328.2011.03.031

• 电子信息 • 上一篇    下一篇

LEO卫星网络中无缝切换管理技术研究

王京林1,2, 曹志刚1   

  1. 1. 清华大学微波与通信国家重点实验室，北京 100084；2.海军装备研究院，北京 102249
  • 收稿日期:2009-12-25 修回日期:2011-01-13 出版日期:2011-03-15 发布日期:2011-03-29
  • 作者简介:1000-1328（2011）03-0660-05
  • 基金资助:
    国家自然科学基金（60672106）

Research on Seamless Handover Management Technology in LEO Satellite Networks

WANG Jing-lin1.2, CAO Zhi-gang1   

  1. 1. State Key Laboratory of Microwave & Digital Communication, Tsinghua University, Beijing 100084, China;
    2. Equipment Academy of PLA Navy, Beijing 102249, China
  • Received:2009-12-25 Revised:2011-01-13 Online:2011-03-15 Published:2011-03-29

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摘要： 针对低地球轨道(LEO)卫星网络中采用移动IPv6(MIPv6)协议带来切换延时长，丢包率高的缺点，本文提出了一种基于MIPv6协议的简单卫星代理本地转发策略。通过解除MIPv6协议中切换过程与位置注册消息交换过程的耦合关系，显著降低了切换延时和切换丢包率。仿真结果表明，新策略与MIPv6协议相比，丢包率降低达75%以上。

关键词: 卫星网络, 无缝切换, 丢包率, 切换延时

Abstract: The major shortcomings of MIPv6 in LEO satellite networks are the long handover delay and high handover packet loss rate. To deal with these issues, a simple local forward strategy based on satellite agent is proposed, and it can significantly reduce the handover packet loss rate and handover delay by decoupling the handover process from the interact process of location message. The simulation result shows that the packet loss rate of proposed scheme decreases by about 75%~90% compared with that of MIPv6.

Key words: Satellite network, Seamless handover, Packet loss rate, Handover delay

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