Demo abstract disseminate: A demonstration of device-to-device media dissemination

Abstract

In this demonstration, we showcase DISSEMINATE, a protocol and accompanying Android application for supporting device-to-device dissemination of data that fulfills shared interests of devices in pervasive computing environments. DISSEMINATE is a novel publish-subscribe based protocol that breaks large (likely media heavy) data items into smaller chunks and opportunistically shares the chunks among co-located mobile devices. Interested devices issue subscriptions for the chunks they need and advertisements for the chunks they can share. Our publish mechanism uses a computation of a chunk's uniqueness to determine whether or not to broadcast it to the locally connected devices. The DISSEMINATE app provides an implementation of the protocol in an Android application for sharing photographs via WiFi-Direct broadcast communication.

XD (exchange-deliver)

“…To demonstrate XD, we have implemented the middleware on the Android operating system and used it to support our own Disseminate application [8], and also the Prophet DTN Router [5]. In our prototype implementation, we have used Bluetooth Low Energy (BLE), WiFi Direct + TCP, and WiFi Direct + UDP as underlying communication technologies.…”

“…The XD middleware fits in the space of frameworks and architectures for opportunistic networks, including work involving data distribution using device-to-device communication [7,8,4]. Most middleware facilitating dD2D communication assume a single underlying communication technology.…”

“…The first application is a rework of our own device-todevice communication application, Disseminate [8]. Because we built the original version of this application, reimplementing it with XD allows us to show a direct comparison of the application's utility (as far as being able to use a wider range of communication technologies) and performance (in terms of transmission rates).…”