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

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