Utility-Based Delay Tolerant Networking Routing Protocol in VANET

Because traditional Internet architecture is not suitable for hash network environments like sparse distribution and intermittent connection of nodes, Delay Tolerant Networking (DTN) is proposed to address the delays and disruptions. In this paper, we propose a utility-based DTN routing protocol in Vehicular Ad Hoc Network (VANET). Through considering node distance, node speed, node direction angle, and node activity, the utility of node is defined and is computed to select node for forwarding messages. We simulate the proposed DTN routing protocol and six typical DTN routing protocols in a VANET environment. The simulation results show that our proposed utility-based DTN routing protocol is able to achieve a comparable performance.