Mobility

A Performance Analysis of 7 DS : A Peer-to-Peer Data Dissemination and Prefetching Tool for Mobile Users

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Executive Summary

This paper presents 7DS, a novel peer-to-peer data sharing system. Peers can be either mobile or stationary 7DS is architecture, a set of protocols and an implementation enabling the exchange of data among peers that are not necessarily connected to the Internet. It runs as an application complementary to other data access approaches (such as via base stations or infostations). It anticipates the information needs of users and fulfills them by searching for information among peers. The authors evaluate via extensive simulations the effectiveness of their system in data dissemination and prefetching for mobile devices. Also, they investigate the effect of the wireless coverage range, network size, query mechanism, cooperation strategy among the mobile hosts and power conservation with very large number user mobility scenarios.

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