基于节点有效通信率的P2P网络拓扑优化  

Optimization of topology for P2P networks based on efficient communication ratio of node

作　　者：邓章林[1] 汤大权[1] 张维明[1] 

机构地区：[1]国防科学技术大学信息系统与管理学院,长沙410073

出　　处：《计算机应用研究》2009年第3期1050-1053,共4页Application Research of Computers

摘　　要：分析了P2P网络中产生大量冗余通信开销的原因,根据不同节点对查询表现出不同的性能,定义了节点有效通信率,让具有更高有效通信率的节点具有更大的连接度。采用了基于流言的闲谈机制来获取整个网络的平均有效通信率和平均节点连接度,提出节点度优化模型及连接策略。实验结果显示文中的拓扑优化方法大幅提高了资源搜索的整体性能。This paper analyzed why there were huge redundant traffics to search in P2P networks.In the searching process,different nodes exhibited different abilities.So efficient communication ratio(ECR) of node was defined as to make the node with higher ECR had bigger degrees.And proposed the model of optimization of node degree in company with the node connection strategy,using the average ERC and average degree of P2P network,which were gained based on gossip mechanism.The experimental results show that the metho...

关 键 词：对等网 拓扑优化 流言机制 

分 类 号：TP393.02[自动化与计算机技术—计算机应用技术]