Impact of node mobility and buffer space on replication-based routing protocols in DTNs

Abstract

A delay-tolerant network (DTN) is a kind of network in which nodes are not directly connected with each other so they communicate through intermediate nodes. As the mobility of nodes is so high in DTNs it is difficult to deliver a message without the creation of duplicate copies for distribution in the network. In this paper the impact of node mobility and the impact of buffer spaces on replication-based routing techniques called epidemic routing and sprays and waits routing has been assessed. To evaluate performance metrics, measures such as delivery ratio, drop rate, overhead ratio, and the number of replications have been used. To simulate the above routing protocols ONE (opportunistic network simulator) simulation was used.