AN ADAPTIVE BROADCAST MECHANISM TO IMPROVE ALERT MESSAGE DISSEMINATION IN VANETS

Nidhin A S, Vinaya K

Abstract: VANET is a rapidly emerging research field and is essential for cooperative driving on the road. VANET technology uses moving car as nodes in a network to create a mobile network. The number of vehicles has been increased on road in the past few years. Due to high density of vehicles, road accident and the potential threats on the road is increasing. VANET is aiming to equip technology in vehicles to reduce these factors by disseminating messages to each other. Warning messages have to be quickly disseminated in order to reach maximum number of vehicles on road. Adapting to the environment where the vehicle is moving is essential to improve the warning message dissemination when an abnormal situation occurs on the road. The notification to the nearby vehicle is done by simply broadcasting the messages which is retransmitted over and again by the vehicles simultaneously to other nearby vehicles. Due to this retransmission of warning message it leads to problem namely broadcast storm problem. This work proposed an adaptive broadcast message forwarding process to improve the warning message dissemination in real urban scenarios and predict the reduction in severity of broadcast storm problem. The efficiency of the alert dissemination can be increased if the vehicles determine the city profile of their current area.

Keywords: Adaptive mechanism, alert dissemination, broadcast storm problem, roadmap scenarios, Mobility Models, VANET.

DOI: https://doi.org/10.15623/ijret.2014.0305005