空间信息网络具有全球覆盖的能力,是能够保证高速率传输和较宽的带宽,支持灵活的、大规模的网络结构。GEO/LEO双层卫星网络由于具有覆盖关系简单、实施复杂性低等优势成为构建多层卫星网络的新思路。基于卫星群和卫星簇的分层结构,提出了一种GEO/LEO卫星网络中的路由优化策略,该策略主要是通过引入优化卫星路由表和路由信息数据报来实现的。最后的复杂性分析表明该策略在降低网络的星上存储开销和星间通信开销方面具有较高的优越性。
Spatial information network possesses the capabilities of global coverage,and is a flexible large-scale network structure that could ensure high-speed transimission and wide bandwidth.GEO/LEO double-layered satellite network,for its simple coverage relationship and low implemention becomes a new idea in building multi-layered satellite network.Based on the hierarchical structure of satellite groups and satellite clusters,this paper proposes an optimized strategy for GEO/LEO satellite networks,which is realized by introducing satellite routing table and routing information datagram.The complexity analysis shows that the strategy has a higher superiority in reducing on-star storage overhead of the network and inter-satellite communication overhead.