摘要
根据多层卫星星座网络的链路长度与可见性模型,建立了多层卫星网络的数学模型,并据此提出了一种适于多层卫星网络应用的层次路由协议。新协议主要包括拓扑测算、路由计算和路由转发。仿真计算结果表明,该协议的计算速度快、拓扑更新的通信开销小、链路利用率高,其性能优于Bellman和多层卫星网络路由(ML-SR)算法。
According to the models of the link length and visibility for multiple satellite constellations, the multi-layer mathematic model of the satellite network was built in this paper. And a new multi-layered routing protocol for multiple satellite network was put forward based on the mathematic model, which consisted of topology estimation, routing calculation and routing retransmission. The simulation results showed that new routing protocol had characteristics of faster computation speed, smaller communication overhead for topology updating, and higher link utilization rate, which performance was better than that of Bellman algorithm or multi-layer satellite routing.
出处
《上海航天》
北大核心
2007年第2期16-20,共5页
Aerospace Shanghai
关键词
卫星网络
星间链路
链路长度
可见性
路由协议
Satellite network
Inter-satellite link
Link length
Visibility
Routing protocol
