Encounter Based Routing in DTN: A Review

Delay tolerant-network (DTN) is emerging technology in wireless communication. This network is useful in scenarios where no end-to-end path exists from source to destination. Current work in routing protocols for delay and disruption tolerant networks leverage epidemic-style algorithms that trade off injecting many copies of messages into the network for increased probability of message delivery. However, such techniques can cause a large amount of contention in the network, increase overall delays, and drain each mobile node’s limited battery supply. We present a new DTN routing algorithm, called Encounter-Based Routing (EBR), which maximizes delivery ratios while minimizing overhead and delay. This paper presents the work done by researchers to enhance the routing techniques in DTN.