1DTCAST: Delay and Disruption Tolerant Multicasting Protocol

Mobile ad hoc delay/disruption tolerant networks (DTNs) networks with intermittent connectivity, have recently received a lot of attention because of their applicability in various applications, including multicasting. We are proposing design of DTN multicast protocol which is called DTCAST for ad-hoc multicast in intermittent connectivity environments. DTCAST protocol can be defined as dual routing and data delivery protocol, which combines on-demand routing phase of ODMRP protocol with short-distance epidemic data dissemination and local route injection to increase robustness in highly mobile environment. One of the key features of the proposed protocol is two-class delivery guarantee for data messages using explicit and implicit acknowledgements. In the paper we present various experimentation results of our protocol implementation as well as simulation results to show the advantages of epidemic dissemination and network in highly mobile environments. I