Semi-Structured BitTorrent Protocol with Application to Efficient P2P Video Streaming
Semi-Structured BitTorrent Protocol with Application to Efficient P2P Video Streaming
复制标题
DOI：
10.1587/transinf.2021edp7011
复制
发表时间：
2021-10
期刊：
影响因子：
--
通讯作者：
S. Fujita
中科院分区：
文献类型：
--
作者：
S. Fujita
摘要在本文中，我们提出了一种方法来提高BitTorrent协议的下载效率，该方法使用了从共享文件生成的片段集合中的结构的概念以及下载相同共享文件的对等体群。更具体地说，对于碎片集合，我们引入了称为集群的超级碎片的概念，其目的是扩大碎片请求和回复的管理粒度，而对于群体节点，我们组织了一个由具有相似上传能力的多个节点组成的集团，以提高与集群相关联的碎片流的平滑性。如模拟结果所示，建议的扩展显著减少了前75%下载者的下载时间，从而提高了Akamai NetSession和BitTorrent DNA等P2P辅助视频流的性能。
SUMMARY In this paper, we propose a method to enhance the down-load e ffi ciency of BitTorrent protocol with the notion of structures in the set of pieces generated from a shared file and the swarm of peers downloading the same shared file. More specifically, as for the set of pieces, we introduce the notion of super-pieces called clusters, which is aimed to enlarge the granularity of the management of request-and-reply of pieces, and as for the swarm of peers, we organize a clique consisting of several peers with similar upload capacity, to improve the smoothness of the flow of pieces associated with a cluster. As is shown in the simulation results, the proposed extensions significantly reduce the download time of the first 75% of the downloaders, and thereby improve the performance of P2P-assisted video streaming such as Akamai NetSession and BitTorrent DNA.