Link Performance Based Neighbor Selection Mechanism in BitTorrent for the Wireless Networks
BitTorrent is one of the most efficient file sharing application on the Internet today. However, the variability of link layer delay and the bandwidth distribution among different wireless devices are significant, thus the peer-to-peer applications like BitTorrent system may suffer the impact on performance in wireless networks. In this paper, we propose a link performance index λ that expresses the bandwidth and link delay of each peer, and then we propose a link performance based (LPB) neighbor selection mechanism, in which a node with a higher index value can more likely be chosen as neighbors and served by other peers in BitTorrent. The LPB mechanism can improve the bandwidth utilization and reduce the overall file download time. Simulation results show that our proposed LPB neighbor selection mechanism in BitTorrent can reduce the average download completion time up to 12％ compared to the standard BitTorrent neighbor selection mechanism in wireless networks.
BitTorrent wireless networks neighbor selection bandwidth link delay download time
Wen Zhou Wei Xing Yongchao Wang Kuntai Li
College of Computer Science and Technology, Zhejiang University, Hangzhou, P.R.China
国际会议
北京
英文
274-278
2011-11-27（万方平台首次上网日期，不代表论文的发表时间）