卫星ATM网络自适应最小阻塞路由策略  

Adaptive least congestion routing over satellite ATM networks

作　　者：李晖[1] 顾学迈[1] 

机构地区：[1]哈尔滨工业大学通信技术研究所,黑龙江哈尔滨150001

出　　处：《系统工程与电子技术》2005年第8期1342-1345,1349,共5页Systems Engineering and Electronics

基　　金：总装备部"十五"国防预研基金资助课题(41306070201)

摘　　要：提出适合面向连接的卫星ATM网络的、动态自适应最小阻塞路由策略;在全球业务量统计模型下,采用全新的适合Walker delta星座的业务区域划分方式,根据每条链路的业务负担情况,选择阻塞概率最小的最优路径。分析该路由策略同最短路径路由的服务质量的不同,比较轨道高度不同的LEO网络同MEO网络在相同业务模型下的性能差异。仿真结果表明,该策略能够提高通信的可靠性———减小路径阻塞概率,同时保证通信的有效性。With the statistical distribution model, which is the foundation of adaptive algorithm, a new method of assigning service areas is invented to accommodate to Walker delta networks. An irradiative routing strategy called adaptive least congestion routing （ALCR） is put forward to study the performance of connection-oriented ATM networks by comparison with the shortest path routing. Knowing link load of every ISL, the ALCR can find the optimized path with the least blocking probability using Bellman-Ford backward routing algorithm. QoS of different routing strategies is compared in networks of different orbit altitudes.

关 键 词：卫星网络 异步传输模式 服务质量 自适应路由 阻塞概率 

分 类 号：TN927.23[电子电信—通信与信息系统]