Journal of Computer Applications ›› 2005, Vol. 25 ›› Issue (12): 2899-2900.

• Network and distributed techno • Previous Articles     Next Articles

A multimedia distributed service based on P2P

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  1. 1.Department of Information Technology,Jingzhou Institute of Technology,Jingzhou Hubei 434100,China;2.School of Computer,Wuhan University,Wuhan Hubei 430072,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2005-12-01 Published:2005-12-01

基于P2P的分布式多媒体服务

吴兆福1,许先斌2   

  1. 1.荆州职业技术学院信息技术系; 2.武汉大学计算机学院

Abstract: In P2P network with two layers,intergroup replication scatters media contents into groups so as to improve the efficiency of media content delivery between the group where a request is issued and the group where the content is stored,and intragroup replication copies media contents into peers for improving the availability of the content.Simulation result show that the latency in P2P based on the architecture is 20% less than that of the FreeNet and 50% less than that of the randomly replication system.Simulation results also show that the video quality in the system is much better than that in the other two systems.The P2P-based approach is distributed,scalable,cost effective.

Key words: multimedia distribution service, peer-to-peer, replication

摘要: 在两个层次的P2P网络中,利用组间复制算法将多媒体内容复制到各个组中,改善分布效率;组内复制算法将多媒体内容复制到Peer中,提高内容的可用性。模拟显示本系统的时延比FreeNet网络小20%,比随机复制系统小50%,能提供更好的视频服务质量,该方法是分布式、可扩展、高效的。

关键词: 分布式多媒体服务, P2P网络, 复制

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