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

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.