Self-Adaptive Message Replication (SAMR) Strategy for Delay/Disruption Tolerant Network

Delay Tolerant Networks (DTNs) have high message delivery latency, very low message delivery probability, long delay. Delay Tolerant Networks routing schemes faces challenges of dynamically changing network topology. Due to this, routing in delay tolerant network is primary issue to consider. The main objectives of routing in Delay Tolerant Networks is to maximize message delivery ratio. A common method to maximize message delivery ratio is to replicate messages to encountered nodes. One of issues is knowing to how many replicas of a message to create? The work in this paper uses encounter history and current encounter values to dynamically finding number of message replications required. In this paper, a new message replication strategy is proposed which vary the number of message replications. Each node chooses by itself the number of message copies to create for the replication.