摘要： 互联网络上的多媒体应用如视频会议、远程教育、协同工作和视频点播等具有服务质量QoS(QualityofService)要求,如链路带宽、传输延迟、节点处理延迟、抖动以及丢失率等。考虑不同应用的不同QoS请求,就多播应用中多播路由树的构造算法/协议进行综述,介绍了目前在多播领域的研究现状,并就各种方法和其优缺点进行了比较分析。最后给出了多播路由的研究方向。

关键词: 多播, 路由, 约束

Abstract: Some multimedia applications such as video-conference, tele-education, demand on video, and so on, have QoS(Quality of Service)requirements. Generally, there are five constraint factors: network bandwidth, link delay, delay jitter, loss rate and multicast cost. This paper presentsan overview of multicast routing algorithms based on all kinds of QoS constraints, and gives a performance comparison and analysis. Finally, thefuture direction of multicast routing is presented.

中图分类号: 

• TP393.09