Intersection-Based Routing Protocol for VANETs

Authors:
Li-Der Chou;Jyun-Yan Yang;Ying-Cheng Hsieh;Der-Chyn Chang;Chi-Feng Tung
Affiliations:
Department of Computer Science and Information Engineering, National Central University, Jhongli City, Taiwan (R.O.C.) 32001;Department of Computer Science and Information Engineering, National Central University, Jhongli City, Taiwan (R.O.C.) 32001;Department of Computer Science and Information Engineering, National Central University, Jhongli City, Taiwan (R.O.C.) 32001;Department of Computer Science and Information Engineering, National Central University, Jhongli City, Taiwan (R.O.C.) 32001;Department of Computer Science and Information Engineering, National Central University, Jhongli City, Taiwan (R.O.C.) 32001
Venue:
Wireless Personal Communications: An International Journal
Year:
2011

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Abstract

Vehicular ad hoc network (VANET) is an emerging wireless communications technology that is capable of enhancing driving safety and velocity by exchanging real-time transportation information. In VANETs, the carry-and-forward strategy has been adopted to overcome uneven distribution of vehicles. If the next vehicle located is in transmission range, then the vehicle forwards the packets; if not, then it carries the packets until meeting. The carry mostly occurs on sparsely populated road segments, with long carry distances having long end-to-end packet delays. Similarly, the dense condition could have long delays, due to queuing delays. The proposed intersection-based routing protocol finds a minimum delay routing path in various vehicle densities. Moreover, vehicles reroute each packet according to real-time road conditions in each intersection, and the packet routing at the intersections is dependent on the moving direction of the next vehicle. Finally, the simulation results show that the proposed Intersection-Based Routing (IBR) protocol has less end-to-end delay compared to vehicle-assisted data delivery (VADD) and greedy traffic aware routing protocol (GyTAR) protcols.