基于P2P的时移电视传输策略  

Transmission Scheme Based on P2P for the Time-shifted TV

作　　者：向伟[1] 李俊[1] 王嵩[1] 吴刚[1] 陈卿[2] 

机构地区：[1]中国科学技术大学自动化系,安徽合肥230027 [2]中国科学技术大学,少年班安徽合肥230026

出　　处：《信息与控制》2007年第2期142-147,共6页Information and Control

基　　金：国家863计划重大资助项目(2005AA103320);新世纪优秀人才支持计划资助项目(NCET-04-0564);安徽省优秀青年科技基金资助项目(04042046)

摘　　要：针对新兴的时移电视业务,提出了基于P2P技术的时移电视传输策略.将视频点播中的补丁技术与P2P技术相结合,节省了视频服务器及主干网络的资源,同时对服务规模没有限制.理论分析及仿真结果表明,该策略可以有效地减轻视频服务器的压力.A time-shifted television transmission strategy based on P2P technology, which focuses on the newly emerging time-shifted television service is proposed. Combining patching algorithm in video on demand （VOD） service with P2P technology saves resources of video server and backbone network, while no constraint is applied on the scale of service. Both theoretical analysis and simulation results show the strategy can effectively reduce the pressure of video server.

关 键 词：时移电视 流媒体 传输策略 对等网络 补丁算法 

分 类 号：TP37[自动化与计算机技术—计算机系统结构]