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基于BitTorrent的P2P-VoD系统设计与实现

Design and implementation of P2P-VoD system based on BitTorrent
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摘要 针对在互联网上提供大规模VoD服务的困难,提出一种采用P2P技术的VoD系统VoDBB,该系统能以较小的服务器代价实现大规模的VoD应用。VoDBB通过修改BitTorrent的片段选择算法改进系统播放连续度,加入后备流媒体服务器和相应的下载源选择算法保障服务质量(QoS),并通过磁盘管理模块和锚点机制支持用户交互操作。仿真实验结果表明,该系统能提供良好的用户观看体验,降低流媒体服务器负载,并具有很强的扩展能力。 Concerning the difficulty of providing large-scale Video on Demand （VoD） service over the Internet, the authors proposed a VoD system named VoDBB based on Peer-to-Peer （P2P） teehnology. It modified the piece selection mechanism of BitTorrent to improve continuity index, used back-up streaming servers to guarantee high service quality and applied anchor point mechanism to support man-machine function. Simulation results show that VoDBB can provide good viewing experience and reduce the burden of the streaming server, and has strong expansion capability.
作者 方翔 汪文勇 唐勇
机构地区 电子科技大学计算机科学与工程学院
出处 《计算机应用》 CSCD 北大核心 2009年第12期3244-3248,共5页 journal of Computer Applications
关键词 视频点播 对等网络 BITTORRENT 流媒体 Video on Demand （VoD） Peer-to-Peer （P2P） network BitTorrent streaming video
分类号 TP393 [自动化与计算机技术—计算机应用技术]
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计算机应用
2009年 第12期

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