关键词: 对等网，内容分发网，流媒体，直播

Abstract: Current technologies adopted by live media streaming system were compared and analyzed, and many problems of these technologies were proposed. To solve the problems of exiting live media streaming systems, combined with the merits of CDN and P2P network architectures, this paper proposed and implemented a new live media streaming system which improves the network topology of traditional content distribution networks. And a solution for critical issues was given, such as the user peer management strategy, buffer management strategy and data schedule scheme, then the merits of this new live media streaming system were analyzed. Simulation studies show that, in large-scale networks environment, the proposed system has improved performances than the current exiting P2P live media streaming systems.

Key words: P2P, CDN, Media streaming, Live