一种P2P网络中基于位置感知的节点选择策略  

A Locality-Aware Based Method for Peer Selection in P2P Network

作　　者：刘永贤[1] 王洪波[1] 程时端[1] 林宇[1] 

机构地区：[1]北京邮电大学网络与交换技术国家重点实验室,北京100876

出　　处：《信息通信技术》2009年第5期11-18,共8页Information and communications Technologies

基　　金：中兴通讯研究基金;高等学校博士学科点专项科研基金(No.200800131019);新世纪优秀人才支持计划(No.NECT-07-0109)

摘　　要：P2P网络作为一种覆盖网络,邻居节点的选择若不考虑网络层、物理层信息,将导致较低的数据传输速度和不必要的跨运营商流量,从而大大限制P2P技术的应用。位置感知策略可以解决这些问题。本文对现有位置感知策略进行分类,并通过分析比较指出了现有位置感知策略的优缺点。提出了一种基于IP地址库的简单有效的节点选择策略,能够感知节点的运营商信息和物理位置。If neighbors＇ information involving network layer and locality is scarcely taken into account in Peer Selection in P2P network, two problems of low transmission rate and unnecessary cross- ISP traffic will be caused, which will then lead to a limit to the spread of P2P technology. Locality awareness can solve these problems. This paper classifies related locality-aware methods, pointing out the advantages and disadvantages of each one by comparison and analysis, then proposes an easy-to-implement and effective method for peer selection based on IP address base, which considers neighbors＇ information of ISP and locality.

关 键 词：P2P网络 节点选择 位置感知 IP地址库 

分 类 号：TP393.02[自动化与计算机技术—计算机应用技术]