A Beacon Rate Control Scheme Based on Fuzzy Logic for Vehicular Ad-Hoc Networks

Abstract

According to IEEE 802.11p protocol, vehicles should periodically broadcast and exchange beacon messages to ensure the cooperative awareness of each other. However, high beacon generation rate may consume a large amount of channel bandwidth and thus lead to severe deterioration of network performance. To solve this problem, we propose an efficient beacon rate control scheme based on fuzzy logic in this paper. Fuzzy logic is proved to be available to handle with imprecise and uncertain information in control problems. Our scheme uses channel busy ratio (CBR), local density and mobility factor as fuzzy factors to obtain the fuzzy result in order to control the beacon rate of vehicles. The scheme is evaluated in our simulation platform, comprised of VISSIM traffic simulator for realistic traffic simulation and NS-3 network simulator for inter-vehicle communications. Simulation results clearly demonstrate the performance of our proposed scheme.