基于对等网的流媒体数据分配算法  

Data Assignment Algorithm for Streaming Media Based on Peer to Peer

作　　者：杨戈[1] 廖建新[1] 朱晓民[1] 黄海[1] 徐梦石[2] 

机构地区：[1]北京邮电大学网络与交换技术国家重点实验室 [2]江西农业大学中科软件学院,南昌330045

出　　处：《计算机工程》2008年第17期12-14,共3页Computer Engineering

基　　金：国家“973”计划基金资助项目(2007CB307100,2007CB307103);国家杰出青年科学基金资助项目(60525110);新世纪优秀人才支持计划基金资助项目(NCET-04-0111,NSFC(90604012));2007年度辽宁大学青年科研基金资助项目(2007LDQN08);电子信息产业部发展基金资助项目“基于3G的移动业务应用系统”

摘　　要：提出一种基于对等网的流媒体数据分配算法(DA2SMp2p),可根据网络环境的变化动态调整数据分配,在提供节点中途失效时,可以比MBDAp2p算法、OTSp2p算法和Algorithm_1算法保持更好的流媒体连续性,提供节点没有失效时,所取得的段缓冲延迟与MBDAp2p算法相同,比OTSp2p算法和Algorithm_1算法小。DA2SMp2p算法、MBDAp2p算法和OTSp2p算法保持连续播放的最小缓冲延迟相同,都比Algorithm_1算法小。This paper proposes a Data Assignment Algorithm Based on Peer to Peer for Streaming Media（DA2SMp2p）. The algorithm can dynamically adjust the data assignment according to the changes of the network. When a supply peer is invalidated, the algorithm can keep more continuity of streaming media than Minimum Buffering Delay media data Assignment algorithm（MBDAp2p）, an optimal media data assignment algorithm（OTSp2p） and Algorithm_1. When no supply peer is invalidated, segment buffering delay of DA2SMp2p is the same as MBDAp2p and smaller than OTSp2p and Algorithm-1 while the minimum buffering delay of a continuous playback for DA2SMp2p, MBDAp2p and OTSp2p algorithms is same. The minimum buffering delay of a continuous playback for Algorithm_1 is the biggest.

关 键 词：流媒体 对等网 缓冲延迟 数据分配 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]