Peer-to-Peer Based Fast File Dissemination in UMTS Networks
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概要
- 論文の詳細を見る
In UMTS (universal mobile telecommunications system) networks upgraded with HSPA (high speed packet access) technology, the high access bandwidth and advanced mobile devices make it applicable to share large files among mobile users by peer-to-peer applications. To receive files quickly is essential for mobile users in file sharing applications, mainly because they are subject to unstable signal strength and battery failures. While many researches present peer-to-peer file sharing architectures in mobile environments, few works focus on decreasing the time spent in disseminating files among users. In this paper, we present an efficient peer-to-peer file sharing design for HSPA networks called AFAM — Adaptive efficient File shAring for uMts networks. AFAM can decrease the dissemination time by efficiently utilizing the upload-bandwidth of mobile nodes. It uses an adaptive rearrangement of a nodes concurrent uploads, which causes the count of the nodes concurrent uploads to lower while ensuring that the nodes upload-bandwidth can be efficiently utilized. AFAM also uses URF — Upload Rarest First policy for the block selection and receiver selection, which achieves real rarest-first for the spread of blocks and effectively avoids the “last-block” problem in file sharing applications. Our simulations show that, AFAM achieves much less dissemination time than other protocols including BulletPrime and a direct implementation of BitTorrent for mobile environments.
- （社）電子情報通信学会の論文
- 2008-12-01
著者
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Pan Li
Electronic Engineering Department School Of Electronic Information And Electrical Engineering Shangh
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Li Jianhua
Electronic Engineering Department School Of Electronic Information And Electrical Engineering Shangh
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Wang Kai
Electronic Engineering Department School Of Electronic Information And Electrical Engineering Shangh