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Research of Distributed File-sharing Service Platform for Mobile Computing

Author: ZhangZuo
Tutor: YinJianWei
School: Zhejiang University
Course: Computer Software and Theory
Keywords: distribute file-sharing intelligent proxy peer to peer computing data block prediction symmetric automatic cache self adjusting browsing
CLC: TN929.5
Type: Master's thesis
Year: 2010
Downloads: 146
Quote: 0
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Abstract


Traditional mobile file sharing technology has restricts on transmission stability, using convenience flexibility and so on. The development of communication technology and popularity of intelligent terminals pose new demands on mobile computing environment. Facing with the growing vast distribute files in mobile network, common file-sharing model is not suitable for dispersion characteristics.Target with the decentralized resource features and needs of intelligent devices. Paper proposed peer distribute file-sharing architecture JFS/M (JTang Filesystem for Mobile computing). Through the architecture, it shields the difference of mobile computing abilities, putting the vast intelligent devices into p2p file-sharing process. Through P2P sharing mode, it accumulates vast resources over net and provide overload balance service by its fault-tolerant, high-reliability natures.Target with the single meta-data server bottleneck, the paper proposed cluser based meta-data manage model providing peer network storage service. It uses enhanced metadata to solve the bottleneck of P2P resource locating algorithm. Based on Paxos agreement, it realizes an learning consistency algorithm whichi can support node failure under an unique number.Target with various computing abilities of intelligent terminals, the paper proposes intelligent agent architechture to provide P2P sharing service by shielding the ability differences. Based on reliance Qos node selection, it separate terminals into direct P2P and indirect P2P modes, and providing file-sharing service using intelligent agent.Target with the different application needs, the paper distribute file-sharing environment into two types according to request oriented classification, ephemeral file-sharing and persistent file-sharing. It sovles transmission bottleneck in empheral sharing environment using user behavior block prediction algorithm and sovles offline operation problems using symmetric automatic cache design.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Mobile Communications
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