Bandwidth allocation in peer-to-peer file sharing networks

被引：5
|
作者：
Creus-Mir, Albert [2 ]
Casadesus-Masanell, Ramon [1 ]
Hervas-Drane, Andres [1 ]
机构：
[1] Harvard Univ, Sch Business, Boston, MA 02163 USA
[2] Univ Politecn Cataluna, EUETIB, Barcelona 08036, Spain
来源：
COMPUTER COMMUNICATIONS | 2008年 / 31卷 / 02期
关键词：
peer-to-peer; network formation; resource allocation; congestion;
D O I：
10.1016/j.comcom.2007.08.001
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
We present a model of bandwidth allocation in a stylized peer-to-peer file sharing network with s peers (sharers) who share files and download from each other and f peers (freeriders) who download from sharers but do not contribute files. Assuming that upload bandwidth is scarcer than download bandwidth and efficient allocation, we compute the expected bandwidth obtained by each peer. We show that (i) while the exact formula is complex, s/(s + f) is a good approximation and (ii) sharers (freeriders) obtain bandwidth larger (smaller) than s/(s + f). The paper constitutes a first step towards a general analytical foundation for scarce resource allocation in peer-to-peer file sharing networks. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：257 / 265
页数：9
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