基于对等网的流媒体数据分配算法.pdf

年 月
第 34 卷 第 17 期 计 算 机 工 程 2
【Abstract】This paper proposes a Data Assignment Algorithm Based on Peer to Peer for Streaming Media(DA SMp2p). 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
2
algorithm(OTSp2p) and Algorithm_1. When no supply peer is invalidated, segment buffering delay of DA SMp2p is the same as MBDAp2p and smaller
2
than OTSp2p and Algorithm_1 while the minimum buffering delay of a continuous playback for DA SMp2p, MBDAp2p and OTSp2p algorithms is
same. The minimum buffering delay of a continuous playback for Algorithm_1 is the biggest.
【Key words】streaming media; peer to peer; buffering delay; data assignment

1 概述 象的段的数目是 2n，缺乏一般性，该算法是静态分配算法，
随着信息技术的飞速发展，以多媒体通信技术为基础的