期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2014
卷号：65
期号：2
出版社：Journal of Theoretical and Applied
摘要：A vehicle�s on-road time since the last pit stop has to be taken into account while forming clusters using Vehicular Ad-hoc Networks (VANET). This is important so as to keep the vehicles at optimum driving conditions and to provide rest to the driver at regular intervals. To the best of our knowledge, no clustering scheme has considered this important practical issue while designing a routing protocol for VANET. In this paper, we present a dynamic and stable cluster-based MAC protocol with a more realistic selection metric that includes the vehicle's on-road time and position messages like relative speed, direction and connectivity among neighboring vehicles while giving priority to vehicles joining a cluster. Our proposed Travel Time Based Clustering Approach (TTCA) is based on a TDMA-based MAC scheme and has been simulated using OMNET++ and SUMO. The results express a significant improvement in terms of cluster stability and throughput against existing approaches.
关键词：Vehicular Ad hoc networks; Cluster; TDMA; OMNET++; SUMO
