Mobility

How Contact Probing Affects the Transmission Capacity and Energy Consumption in DTNs

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Executive Summary

Link duration is a main factor in determining the transmission capacity between two encounter nodes in Delay Tolerant Networks (DTNs). Existing research on DTN transmission capacity usually assumes that a node is able to immediately discover the nodes which move into its transmission range. Under this assumption, the link duration in DTNs is determined by the moving speed and transmission distance of encounter nodes. However, this assumption could be invalid in realistic DTNs where the nodes use a contact probing protocol to detect their neighbors. In this paper, the authors investigate the impact of contact probing mechanisms on link duration, and thus the transmission capacity of DTNs.

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