一种基于CBT系统的种子覆盖网

Kind of Seed Overlay Network Based on the CBT System

在BitTorrent(BT)系统中,种子节点提供绝大部分的文件块上传服务,尤其是初始种子节点在整个文件上传和下载中起着很重要的作用。研究目前出现的几种基于种子的文件块分发策略,提出一种基于CBT系统的种子覆盖网,在减少种子平均上传花费和平衡种子负载的基础上,通过提高整个系统的文件块分发效率和整合CBT技术,来提高系统的性能。仿真实验结果表明,节点的下载速度和系统性能有明显地提高。

In the BitTorrent system, seed nodes, especially initial seed nodes play a very important role in the entire file up- loading and downloading process, and provide most of the file block upload services. In this paper, by researching several seed- based file block distribution strategies, a kind of improved seed overlay network is proposed, which is on the basis of reducing the seed average upload cost and balancing the seed load. It improves the overall system performance through improving the file block distribution efficiency of the entire system and integrating CBT technology. Simulation result shows that the download speed and the system performance have been markedly improved.