一种可接受大规模实时播放的分布式P2P点播系统

A Distributed P2P Ordering System Accepting Mass Real-Time Broadcasting

指出P2P的传播方式为现阶段实施大规模多媒体网络应用提供了较好的解决方案。采用动态的加入和退出算法和分布式网络,减轻了单个节点的行为对全网的影响,同时针对一些P2P传输系统存在的时延问题,应用核心迁移的方法,动态改变媒体分发树的拓扑结构,尽量减小网络中的节点离核直径,控制全网的平均时延,保持媒体平稳连续的在线播放。

Presently, the method of server-customer extensively applied in streaming service cannot meet the increasing demand of application of multi media and the implementation of some existent technology needs big adjustment of cadre of network. The spreading way of P2P offers a better solution to achieve mass multicast in network. It introduces arithmetic of adding and quitting, which reduce the infection of single node for the whole network. Meanwhile, to address the problem of interval in some P2P transfers system, it uses the method of core shift, changing the topology structure of dispensing tree of media dynamically, trying its best to reduce the distance between node and core in network, controlling the average interval and keeping the media broadcasting online steadily and continuously.