摘要：

在分析PeerCast广播机制和节点维护算法的基础上，增加上游节点向下游节点广播状态信息的函数，改进节点的加入和维护策略，并在局域网内进行实验验证。实验结果表明，改进的广播机制和节点维护算法能够减少节点断线重连的时间，提高断线重连的成功率，降低断线后对YP的访问次数，减轻YP的压力。

关键词: 对等网络, 流媒体, PeerCast广播机制

Abstract:

This paper proposes an improved broadcasting mechanism and a node-maintaining algorithm based on the analysis of PeerCast broadcasting mechanism and node-maintaining algorithm. Experimental results show that the proposed scheme reduces the time of reconnection and improves the success rate of reconnection when disconnected in PeerCast. And it decreases the times of visiting YP(Yellow Page) after disconnection which reduces the stress of YP.

Key words: P2P, streaming media, PeerCast broadcasting mechanism

中图分类号: 

• TP393