Directed diffusion: a scalable and robust communication paradigm for sensor networks
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
Spray and wait: an efficient routing scheme for intermittently connected mobile networks
Proceedings of the 2005 ACM SIGCOMM workshop on Delay-tolerant networking
Opportunistic networking: data forwarding in disconnected mobile ad hoc networks
IEEE Communications Magazine
Evaluating the impact of an acknowledgment strategy for APRP
Proceedings of the 5th International Latin American Networking Conference
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In Delay and Disruption Tolerant Networks (DTNs), there are no stable end-to-end paths because the connectivity of nodes is frequently disrupted by their mobility, power saving or other reasons. Nevertheless nodes can communicate each other by a store-and-forward paradigm if there are end-to-end paths on the union of network snapshots over time. Many previous studies have proposed routing protocols adopting this paradigm. We propose Regional Token Based Routing (RTBR) that reflect mobility patterns of real users. The real networks may consist of several sub networks (called "regions") and have mobile nodes that move within regions or between regions. RTBR exploits node mobility and region information. It assigns "tokens" for each region to messages and sprays message copies into the regions as many as tokens for each region. Using simulation, we show that RTBR outperforms over 25% better delivery ratio than other flooding based schemes and maintains low overhead.