Regional token based routing for DTNs

摘要: 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 can communicate each a store-and-forward paradigm if on union 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 real users. The networks may consist several sub (called “regions”) mobile move within regions between regions. RTBR exploits node region information. It assigns “tokens” for to messages sprays message copies into as many tokens region. Using simulation, we show outperforms 25% better delivery ratio than flooding based schemes maintains low overhead.