基于VRNET的卫星路由算法研究与仿真  

The research and simulation of satellite routing algorithms based on VRNET

作　　者：杨春秀[1] 张林波[1] 刘彤[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《应用科技》2011年第11期43-48,共6页Applied Science and Technology

基　　金：中央高校基本科研业务费专项资金资助项目(HEUCF110802)

摘　　要：分析了目前已有卫星路由算法,讨论了其中具有代表性的多层卫星网络路由算法MLSR,在此基础上提出并设计了一种适合LEO&MEO&GEO多层卫星网络的路由算法DT_MLSR,该算法充分利用了卫星通信网络的规律性和可预知性,利用地面网关来传输部分链路信息,有效地减少了路由计算开销,缩短建路时间.另外通过增加卫星网络流量监测及接入卫星的选取机制,平衡了网络流量分布,降低了网络的丢包率,并在一定程度上减少了通信业务的端到端时延.This paper analyzes the existing satellite routing algorithms, and discusses a representative muhilayer satellite routing algorithm--MLSR. Based on this algorithm, a new muhilayer routing algorithm DT_MLSR suitable for LEO＆MEO＆GEO satellite network is designed. This algorithm makes full use of the regularity and predictability of the satellite communication network, by using a ground gateway to transmit some link information. This method can reduce routing computation cost and shorten the router update time. Also, by increasing accesses of monitoring the satellite network traffic and chosing satellite, this algorithm balances the network traffic distribution, and reduces the packet loss rate and end-to-end delay to a certain extent.

关 键 词：卫星网络 路由算法 链路权值 VRNET 

分 类 号：TN91[电子电信—通信与信息系统]