Store-and-Forward Performance in a Disruption Tolerant Network

Delay and disruption tolerant networks have been proposed to address data communication challenges in network scenarios where an instantaneous end-to-end path between a source and destination may not exist, and the links between nodes may be opportunistic, predictably connectable, or periodically-(dis)connected. In this paper, we discuss how mobility management in DTN (delay-/disruption-tolerant networks) environments can be handled. We present preliminary simulation results on how the store-and-forward concepts and the presence of a message ferry allow the end-to-end message delivery ratio to be around 90-99% with appropriate buffer allocations. We also investigate how different link availability patterns affect the end-to-end message delivery ratio in multihop DTN scenarios.

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In Proceedings of IEEE 63rd Vehicular Technology Conference (VTC), Volume 1, Pages 187-191, Melbourne, Australia, May 2006.

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