摘要： 分析并比较几种典型P2P流媒体模型的可扩展性、启动延时和系统稳定性，指出基于gossip协议的媒体服务模型与基于多播树协议的P2P流媒体服务模型的区别。总结P2P流媒体服务体系涉及的数据调度算法、节点选择优化算法等关键技术，分析其存在的问题并指出研究方向。

关键词: 对等网, 流媒体, 多播树协议, gossip协议, 数据调度

Abstract: This paper analyzes and compares several typical P2P streaming media models in expansibility, start delay and system stability. It points out the differences between media service models based on gossip protocol and P2P streaming media service models based on multicast tree protocol, and summarizes the key techniques of P2P streaming media service system, such as data scheme algorithm and peer selection algorithm. It analyzes some existent problems and some remained issues for further research.

Key words: P2P, streaming media, multicast-tree protocol, gossip protocol, data scheme

中图分类号: 

• TP393