移动对等网络关键技术

P2P系统在Internet上的成功使研究者关注于分布式更强、参与性更广、更具有对等自治特征的移动网络环境.智能终端的普及和移动应用环境的逐渐成熟使得移动对等网络拥有广阔的发展前景.但当前对移动对等网络的研究还缺乏统一而明确的定义,还存在很多未能很好地解决的问题.首先,概述了移动对等网络的基本概念,给出了其定义、特征以及与移动AdHoc网络的区别,并指出了移动对等网络的相关关键技术;随后,详细综述了移动对等网络体系结构、资源搜索策略、网络结构一致性、数据分发策略、安全与隐私机制等关键技术的研究现状,对各种关键技术的研究成果给出了深入分析,并指出了各自存在的问题和缺陷.最后,讨论了移动对等网络未来的研究方向和发展趋势.

Key Techniques for Mobile Peer-to-Peer Networks

The great success of P2P (peer-to-peer) system based on Internet makes researchers focus on the mobile network environment, which is more distributed, with wider participants and more autonomic than the fixed P2P system. The popularity of intelligent terminals and the maturity of mobile application environment bring a bright prospect for mobile P2P networks. But the current research on the mobile P2P network is short of an accurate definition and a great number of questions are still needed to be studied deeply. In this paper, the basic concept of mobile P2P network is introduced firstly, including the definition and characteristics of mobile P2P network, the differences between mobile P2P network and mobile Ad Hoc network and the key techniques of the former. Then a comprehensive survey of the key techniques of mobile P2P networks, such as mobile P2P network architecture, resource discovery strategy, network structure consistency, data dissemination strategy, security and privacy mechanism, is given. The research results of the key techniques are also analyzed in depth, furthermore, the shortcomings and problems are outlined. In the end, the future research and development trend of mobile P2P networks is discussed.