Experimenting with real-life opportunistic communications using windows mobile devices
CoNEXT '07 Proceedings of the 2007 ACM CoNEXT conference
Self-policing mobile ad hoc networks by reputation systems
IEEE Communications Magazine
Opportunistic networking: data forwarding in disconnected mobile ad hoc networks
IEEE Communications Magazine
Socially-aware routing for publish-subscribe in delay-tolerant mobile ad hoc networks
IEEE Journal on Selected Areas in Communications
Hi-index | 0.01 |
user-generated podcasting service over human-centric opportunistic network can facilitate user-generated content sharing while humans are on the move beyond the coverage of infrastructure networks. We focus on the aspects of designing efficient forwarding and cache replacement schemes of such service under the constraints of limited capability of handheld device and limited network capacity. In particular, the design of those schemes is challenged by the lack of podcast channel popularity information at each node which is crucial for forwarding and caching decisions. We design a distributed reputation system based on modified Bayesian framework that enable each node estimates the channel popularity in a efficient way. It estimates channel popularity by not only first hand observations but also second hand observations from other nodes. Our simulation result shows reputation system can always well estimate most popular, intermediate and low popular channels, compare to history-based rank scheme which can only well estimate a few most popular channels. Reputation system significantly outperforms history-based rank when the public cache size is small or "a" parameter of Zipf-like distribution is small.