Peer-to-peer publication, search and retrieval using the Android mobile platform

In this paper, we present the iTrust over Wi-Fi Direct system, which is a peer-to-peer publication, search and retrieval system for mobile ad hoc networks. We describe the iTrust over Wi-Fi Direct architecture and components, as implemented on the Android platform for mobile devices, and show how user applications can easily interface with iTrust over Wi-Fi Direct. We also describe the iTrust over Wi-Fi Direct networking model, and the interactions with the Android and Linux stacks. In addition, we describe the peer management protocol for iTrust over Wi-Fi Direct on the Android platform, which enables peers to construct a mobile ad hoc network by automatically discovering and connecting peers. We discuss deficiencies of the Android platform for Wi-Fi Direct, and present our solution to address those limitations. Finally, we present a performance evaluation of iTrust over Wi-Fi Direct in terms of the match probabilities without and with message forwarding, the peer management overhead, and the resource transfer latency.