P2P中应用平衡机制抑制搭便车行为的研究  

Balanced Algorithm to Suppress Free-riding in P2P Network

作　　者：刘建辉[1] 王君[2] 冀常鹏[1] 汪洋[2] 

机构地区：[1]辽宁工程技术大学电子与信息工程学院,葫芦岛125105 [2]辽宁工程技术大学研究生学院,葫芦岛125105

出　　处：《计算机科学》2013年第7期36-39,共4页Computer Science

摘　　要：针对近年来P2P网络中存在大量"搭便车"节点的问题,在判断一个节点是否是搭便车节点时提出一种基于平衡机制的算法,其不仅考虑节点自身的理性行为方面,还考虑节点所处的物理环境特征,并采用降低搭便车节点下载资源速度的方法来抑制其搭便车行为。仿真实验表明,该平衡机制算法可以有效降低网络中搭便车节点的数量,并提高网络的下载成功率,同时增强网络的公平性、稳定性,达到抑制搭便车行为的目的。With the rapid dewelopment M P2P network in recent years,there are a lot of ＇free-riding＇ node problems. A kind of balanced algorithm was proposed to determine whether a node is free-riding or not. This algorithm not only takes the rational behavior of node itself into consideration but even also the characteristics of the physical environment where nodes exist. And it slows down the speed of downloading resources of a node to suppress the free-riding beha- vior. The simulation experiment shows that this algorithm can inhibit the number of free-riding nodes effectively, but al- so improve the download success rate of the network. It enhances the fairness and stability of network. So finally it a-chieves the purpose of suppressing the fee-riding.

关 键 词：P2P网络 搭便车 效益值 公平指标 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]