【摘要】 卫星通信将成为未来个人通信系统的一个重要组成部分.LEO和MEO(low/mediumearthorbiting)是卫星个人通信网络(S-PCN)的首选.针对使用星际链路ISL(intersatellitelinks)的LEO和MEO卫星系统,本文提出一种基于动态路由策略的卫星个人通信网络的链路故障检测方法,该方法适用于面向连接且采用基于ATM路由算法的卫星网络.该算法通过构建离散时间动态虚拓扑图(DT-DVTG)(discrete-timedynamicvirtualtopologygraph)管理卫星能够自主地、实时地检测(identification)出最可能出现故障的链路范围,并通过快速的、自主的测试可精确定位故障链路.通过在卫星网络上的仿真表明,具有实时性、自主性、精确性且可能不占用或只占用很少的额外带宽.更多还原

【Abstract】 Satellite systems are going to be an important part of the future personal communication infrastructure.The first-generation candidates for satellite personal communication networks(S-PCN)will rely on LEO(low earth orbiting)and MEO(medium earth orbiting)constellations.This paper proposes an identification algorithm of dynamic routing-based fualty links in Satellite Personal Communication Networks.The algorithm applies to a satellite network assuming a connection-oriented network strukture,e.g.,ATM or ATM-type switches on-board satellites.In the algorithm the management satellite can autonomously and real-time identify a ranked list of the most probable failed network links through building discrete-time dynamic virtual topology graph(DT-DVTG),and accurately detect failed links through quickly and autonomously testing. Through the simulation in satellite network ,we can conclude that this method has the features of real-time,autonomy and accuracy , perhaps needs a few or doesnt need extra bandwidth.更多还原