基于P2P的流媒体应用及其关键算法研究

在Internet视频直播服务中，受带宽限制，服务器难以支持大规模并发客户。针对该问题，本文采用P2P方式，提高并发节点数目。文中提出网络抽象层实现P2P的网络拓扑结构，并针对对等网络中节点的不确定性、分散性以及延迟问题，详细讨论了建立和维护节点网络的BMTREE算法。最后实验表明利用BMTREE算法的P2P网络结构能高效处理视频直播流媒体应用。

RESEARCH ON PEER-TO-PEER ARCHITECTURE AND ALGORITHM FOR STREAMING LIVE MEDIA

The high bandwidth required by live st re aming video greatly limits number of clients that connect to media server.This p aper designs an efficient solution based on peer-to-peer technique.This paper d escribes the architecture of the system that consists of three layers:network ab s tract layer,stream control layer and media player layer.In network abstract laye r,this paper proposes a new algorithm,called BMTREE,to address the issues:autono mous and unpredictable behavior of nodes,and latency of application-level multi cast.At last,by analyzing its performance,it can be efficiently used in the broa dband applications of live stream video.