Full Paper (5 pages)
Qing Ye, Liang Cheng, Mooi Choo Chuah and Brian D. Davison
Disruption Tolerant Networks (DTNs) are emerging solutions to networks that experience frequent network partitions and large end-to-end delays. In this paper, we study how to provide high-performance multicasting service in DTNs. We develop a multicasting mechanism based on on-demand path discovery and overall situation awareness of link availability (OS-multicast) to address the challenges of opportunistic link connectivities in DTNs. Simulation results show that OS-multicast can achieve a better message delivery ratio than existing approaches, e.g. DTBR (a dynamic tree-based routing), with similar delay performance. OS-multicast also achieves better efficiency performance when the probability of link unavailability is high and the duration of link downtime is large.
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In Proceedings of IEEE 63rd Vehicular Technology Conference (VTC), Volume 1, Pages 96-100, Melbourne, Australia, May 2006.
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