摘要
具有星际链路的双层通信星座网络可为全球提供宽带实时多媒体通信服务,路由算法设计是其中关键技术之一。本文详细介绍了由低轨卫星与中轨卫星构成的空间信息通信网双层星座系统体系结构,提出了一种新的具有QoS保证的双层卫星网络路由算法。仿真结果表明提出的路由算法可以满足系统的QoS业务要求的延迟、丢包率与抖动等指标。
Double-layered satellite networks with inter-satellite-links(ISLs) can provide real-time multimedia service with broadband globally, one of key technologies is the routing algorithm design. The system framework of a double-layered LEO/MEO satellite constellation in spatial information communication networks is introduced in detail, and then a novel QoS-based routing algorithm for the double-layered satellite networks is proposed. Simulation results show that the proposed routing algorithm results in low delay, small delay jitter and low drop ratio, and provides excellent performance for QoS requirement.
出处
《无线通信技术》
2005年第2期22-27,共6页
Wireless Communication Technology
基金
国家"863"计划项目(2003AA712022)。
