华南理工大学学报(自然科学版) ›› 2009, Vol. 37 ›› Issue (10): 66-72.

• 计算机科学与技术 • 上一篇    下一篇

一种具有小世界特征的结构化P2P覆盖网络

魏文红 肖文俊   

  1. 华南理工大学 计算机科学与工程学院, 广东 广州 510640
  • 收稿日期:2008-06-17 修回日期:2008-10-08 出版日期:2009-10-25 发布日期:2009-10-25
  • 通信作者: 魏文红(1977-),男,讲师,博士,主要从事P2P网络、并行分布式算法研究. E-mail:hquwwh@tom.com
  • 作者简介:魏文红(1977-),男,讲师,博士,主要从事P2P网络、并行分布式算法研究.
  • 基金资助:

    广东省自然科学基金资助项目(05011896);广东省网络重点实验室项目(CCNL200705)

A Structured P2P Overlay Network with Small-World Characteristics

Wei Wen-hong  Xiao Wen-jun   

  1. A Structured P2P Overlay Network with Small-World Characteristics
  • Received:2008-06-17 Revised:2008-10-08 Online:2009-10-25 Published:2009-10-25
  • Contact: 魏文红(1977-),男,讲师,博士,主要从事P2P网络、并行分布式算法研究. E-mail:hquwwh@tom.com
  • About author:魏文红(1977-),男,讲师,博士,主要从事P2P网络、并行分布式算法研究.
  • Supported by:

    广东省自然科学基金资助项目(05011896);广东省网络重点实验室项目(CCNL200705)

摘要: :现有的P2P覆盖网络都难以把具有共同兴趣的对等点连接起来,不适用于文件浏览服务.为此,文中推广了立方连接圈(CCC)图,研究了推广立方连接圈(GCCC)图的拓扑性质,进而基于GCCC图定义了一种新的结构化P2P覆盖网络——推广立方连接圈网络(GCNET).与其它的P2P覆盖网络相比,GCNET具有良好的小世界特征和更好的鲁棒性.模拟实验结果表明,GCNET的路由表和查询长度能达到理论下界.

关键词: 文件浏览, P2P覆盖网络, 立方连接圈, 推广立方连接圈网络, Cayley图, 小世界特征, 鲁棒性

Abstract:

As the existing P2P overlay networks can not closely connect peers with the same interest together, it is not practical to provide browsing service in such systems. In order to solve this problem, the existing cube-connected cycle (CCC) graph is generalized, and the topological properties of the generalized CCC (GCCC) graph are in- vestigated. Afterwards, a novel structured P2P overlay network marked as GCNET (Generalized Cube-Connected Cycle network) is defined based on GCCC, which possesses better small-world characteristics and stronger robust- ness than other P2P overlay networks. Simulated results show that GCNET can reach the theoretical lower bounds of both the routing table size and the query path length.

Key words: file browsing, P2P overlay network, cube-connected cycle, generalized cube-connected cycle net-work, Cayley graph, small-world characteristic , robustness