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。
关键词:
流媒体,
对等网,
缓冲延迟,
数据分配
Abstract: 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.
Key words:
streaming media,
peer to peer,
buffering delay,
data assignment
中图分类号:
杨 戈;廖建新;朱晓民;黄 海;徐梦石. 基于对等网的流媒体数据分配算法[J]. 计算机工程, 2008, 34(17): 12-14.
YANG Ge; LIAO Jian-xin; ZHU Xiao-min; HUANG Hai; XU Meng-shi. Data Assignment Algorithm for Streaming Media Based on Peer to Peer[J]. Computer Engineering, 2008, 34(17): 12-14.