Performance Analysis of DTN Routing Protocols: Single-Copy and Multi-Copy in ICMN Scenario

Delay tolerant networks are qualified by asymmetric flow and intermittent connectivity where direct path is not foundbetween nodes. In this research, we analyse two routing schemes' performance, single and multi-copy simultaneously in an intermittently connected mobile network. Among various routing protocols, first contact from single copy whilespray-and-wait, prophet, and epidemic from multi-copy are chosen to analyse their performance. Aside from various performance metrics, routing protocols are analysed in terms of overhead, delivery, average buffer time and latency for varying number of mobile nodes, time-to-live and message generation rates respectively. Opportunistic network environment simulator coded by java programming language is taken as the tool of simulation for the investigation of these routing protocols. According to the investigated result of the specified routing techniques, we can conclude that the performance of spray-and-wait is good while bad for epidemic withall the metrics used here. On the other hand, first contact does not showgood performance among all the routing protocols with delivery probability and average buffer time.