Contact-based routing in DTNs
Sujata Pal, Sudip Misra · 2015
Multi-copy replication is an efficient approach for routing a message between a pair of source and destination nodes in a Delay Tolerant Network (DTN). However, such an approach disseminates an undesirable number of replicas of messages, which increases the overhead of the network. To restrain this, disparate routing techniques have evolved that limit the number of copies of the messages. However, in these schemes a message stays undesirably long in the buffer of a node. To address this issue, we propose a contact-based routing algorithm for DTNs that minimizes the average message buffer time of a node, while maintaining a targeted message delivery ratio compared to the existing state-of-the-art routing protocols. Simulation results show that the average message buffer time reduces upto one fourth from the existing quota-based schemes, and the message delivery ratio improves upto 18% over the well-known flooding based schemes.