A Study on Stable Route Decision Scheme in Urban Inter-Vehicle Communication

Vehicular ad-hoc network (VANET) is constructed of networks using direct radio communication among moving vehicles without fixed infrastructure. Network topologies change frequently due to high mobility and communication disconnections particularly occur due to interruptions of message propagation caused by obstacles such as buildings in urban traffic environment. Therefore, a VANET routing protocol approach to distributing messages among highly mobile vehicles in urban environment is needed. We suggest a scheme to improve the transmission performance at intersections using an approach to the distance-based broadcasting which utilizes the vehicle´s position. It determines the stable route decision using the relative velocity among vehicles and zone-based priorities in the intersection. We analyze the performance of schemes under simulating environment implemented with the Manhattan model. The results show that the performance is significantly improved compared with the previous study when using the suggested scheme in the urban traffic environment.