OS-multicast: On-demand Situation-aware Multicasting in Disruption Tolerant Networks

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Qing Ye, Liang Cheng, Mooi Choo Chuah and Brian D. Davison

Abstract
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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Last modified: 28 May 2011
Brian D. Davison