Ferry Enhanced Improved PRoPHET Routing Protocol

In a Delay Tolerant Network (DTN), where nodes are constantly moving and the connection of nodes are intermittent, messages are delivered by replicating to neighbor nodes in hopes of delivering to the destination in a timely manner. This causes a DTN network to have many duplicates even long after the message has reached its destination. In this paper, we develop a new routing protocol that helps alleviate the amount of unnecessary message duplicates by introducing ferry nodes that have the capability of deleting messages that have already been delivered to the destination nodes in the network. With appropriately designed routes, ferries also help with message delivery. We then analyze the protocol through simulations and verify the performance in terms of message delivery delay, average number of copies created within a network, and message delivery ratio. The experiments show that the proposed protocol has improved performance.