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

Abstract

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.

Distance-Based Stable Routing Decision Scheme in Urban Vehicular Ad Hoc Networks

“…In order to evaluate the performance of the proposed protocol, we compare ours with other routing protocols such as AODV [5], GSR [1], POVRP [12,13], and other urban VANET routing protocols [4] in using the same simulation parameters. AODV is a typical ad hoc routing protocol using the flooding method.…”

“…It evaluated its effectiveness as compared with other protocols in urban environments. In this paper, we enhance [5] applying two major approaches separated between an intersection and a road area. In intersections, the intersection waiting time mechanism is operated for intersection-based route discovery.…”

“…The stable routing decision scheme is suggested in [5] as our previous work. It is based on distance-based message dissemination using waiting times.…”

“…, } in sender's Range a neighboring node 's position a neighboring node 's velocity V a TTL which is determined by a source node Output: sender's position and set their own adaptive waiting time (AWT) based on 1 , 2 , 1 , 2 which are received from the sender. The AWT is calculated by (5). A receiver has the AWT computed in 0 ≤ ≤ 1 / if the receiver's current position is located on the 1 zone.…”

“…Numerous routing protocols (e.g., [1][2][3][4][5][6][7]) for VANET have been proposed based on MANET routing protocols. Generally, MANET routing protocols have the main requirement to improve network performance to achieve minimal communication time with minimum consumption of network resources.…”