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为了满足卫星网络与地面互联网相互融合的发展需求,卫星网络中应该支持基于IP的移动性管理协议。无缝IP分集通用移动性结构(SIGMA)与移动IPv6(MIPv6)是地面网络分别基于传输层和网络层的典型移动性解决方案。该文在卫星作为路由器的情况下,阐述了SIGMA与MIPv6在低轨卫星星座网络中的工作流程。分析模型和仿真结果表明,SIGMA协议具有较低的移动管理开销。
In order to meet the development demand of the integration of satellite network and terrestrial Internet, the IP network-based mobility management protocol should be supported in the satellite network. Seamless IP Diversity SIGMA and Mobile IPv6 (MIPv6) are typical mobility solutions for the terrestrial network based on the transport layer and the network layer, respectively. This paper describes the working process of SIGMA and MIPv6 in LEO satellite constellation network with the satellite as a router. The analysis model and simulation results show that the SIGMA protocol has lower mobility management overhead.