航天器移动IP数据链路层接入研究

Research on Mobile IP Datalink Access of Spacecraft

已有移动IP技术在航天测控网中航天器移动接入成功使用的范例,但现存IP技术直接应用于航天测控网中均没有考虑2层时延对于接入质量的影响。本文针对移动IP技术中数据链路层接入机制,分析了常用的信号扫描策略对于航天器移动接入的影响,提出了一种基于轨道信息预测的移动IP接入方案。仿真结果表明,该方案可以获得更低的丢包率以及延迟。

There are some successful examples of the using on mobile IP in spaceflight test control network ,however there are not L2 handoff mechanism improvement in these protocols which is used in in spaceflight test control network for access of nongeostationary. From the analysis of L2 handover mechanism, it can be found the Scan of L2 handover main portion of the latency in L2. an orbit information prediction handover scheme of mobile IPv6 for access of nongeostationary is put forward, it can be indicated from simulation results that latency and packet loss rate are lower in the orbit information prediction handover scheme.