摘要
拓扑时变性、承载业务分布不均衡以及星上资源有限,使得设计新的低轨道卫星星座网络路由算法迫在眉睫。如何设计简单、高效的低轨道卫星星座路由成为当前卫星网络研究的热点问题。深入剖析了LEO卫星网络的特点,从几何模型、切换以及星上处理能力三个视角出发,分类综述了LEO卫星路由算法,阐述了各类路由的典型算法,讨论了每种算法的优点和适用环境,剖析了其中存在的问题,并对它们进行了综合对比。最后指出了LEO卫星路由算法进一步的研究方向。
Because of the particular features of LEO satellite networks, such as dynamic topology, non-homogeneous traffic distribution, limited power and processing, new satellite routing approaches should be developed. Flow to design simple and efficient routing algorithm becomes the hot topic of LEO satelhte networks. Analyze the characteristics of LEO satellite networks, and then survey the current LEO tatellite routing algorithms classified with the geometric model, handoff and onboard processing capability. Typical algorithms of each elass are presented and their advantages, suitable environment and shortcomings with a detailed comprehensive comparison are discussed. The end of the paper points out the future research field for LEO satellite routing problem.
出处
《计算机技术与发展》
2011年第3期44-47,51,共5页
Computer Technology and Development
基金
国家863重点项目(2010AAxxx0404)
关键词
LEO卫星星座
路由技术
动态拓扑
切换
负载均衡
LEO satellite constellation networks
routing technology
dynamical topology
handoff
load balance
