ISSN 1000-9825, CODEN RUXUEW Journal of Software, Vol.20, No.8, August 2009, pp.2199 2213 doi: 10.3724/SP.J.1001.2009.03639 © by Institute of Software, the Chinese Academy of Sciences. All rights reserved. E-mail: jos@iscas.ac.cn www.wendangwang.com Tel/Fax: +86-10-62562563 应用于移动互联网的Peer-to-Peer关键技术 李 伟 1,2, 徐正全 3+, 杨 铸 1 1 2 3 (武汉邮电科学研究院 光纤通信与网络国家重点实验室(筹),湖北 武汉 (武汉大学 电子信息学院,湖北 武汉 430072) 430074) (武汉大学 测绘遥感信息工程国家重点实验室,湖北 武汉 430074) Peer-to-Peer Key Technologies in Mobile Internet LI Wei1,2, 1 XU Zheng-Quan3+, YANG Zhu1 (Optical Communication & Network State Key Laboratory (Preparing), Wuhan Research Institute of Posts and Telecommunications, Wuhan 430074, China) 2 3 (School of Electronic Information, Wuhan University, Wuhan 430072, China) (State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430074, China) + Corresponding author: E-mail: xuzq@whu.edu.cn Li W, Xu ZQ, Yang Z. Peer-to-Peer key technologies in mobile Internet. Journal of Software, 2009,20(8): 2199 2213. www.wendangwang.com Abstract: This paper analyzes the previous study of applying P2P technology in mobile Internet. It first introduces the P2P technology and the conception of mobile Internet, and presents the challenges and service pattern of P2P technology in mobile Internet. Second, the architectures of P2P technology in mobile Internet are described in terms of centralized architecture, super node architecture and ad hoc architecture, respectively. Further more, the resource location algorisms and cross-layer optimizations are introduced based on two different terminal access patterns. Detailed analyses of different key technologies are presented and the disadvantages are pointed out. At last, this paper outlines future research directions. Key words: 摘 要: mobile Internet; peer-to-peer; mobile ad hoc; resource location 对现有的应用于移动互联网的 P2P 技术方面的研究进行了分析.首先介绍了 P2P 技术和移动互联网的概 念,并提出将 P2P 技术应用在移动互联网所面临的挑战和应用模式.其次,分别针对集中式架构、超级节点体系架构 和 ad hoc 架构对应用于互联网的 P2P 网络体系架构进行了阐述.再其次,针对移动终端的两种接入模式,分别在资源 定位算法和跨层优化两个方面进行了介绍.对各关键技术的特点进行了详细的分析,指出其存在的不足.最后,对未 来的工作进行了展望. 关键词: 移动互联网;peer-to-peer;mobile ad hoc;资源定位 文献标识码: A 中图法分类号: TP393 Supported by the National Basic Research Program of China under Grant No.2006CB303104 (国家重点基础研究发展计划(973)) Received 2008-10-10; Accepted 2009-04-27