Analysis of collision probability in vehicular ad hoc networks

Authors:
Jianwei An;Xun Guo;Yang Yang
Affiliations:
University of Science and Technology Beijing, Beijing, China;University of Science and Technology Beijing, Beijing, China;University of Science and Technology Beijing, Beijing, China
Venue:
Proceedings of the first ACM/SIGEVO Summit on Genetic and Evolutionary Computation
Year:
2009

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Abstract

Vehicular Ad Hoc Network (VANET) is a new type of ad hoc network with the characteristics of highly dynamic topology, variable vehicle velocity and density. In the performance evaluation of VANETs, traditional collision probability model is not suitable because it poorly reflects these characteristics. However, collision probability is a vital ingredient for any performance evaluation in IEEE 802.11 system. In order to get more accurate results of VANETsýý performance evaluation, a new model to estimate the collision probability in VANETs is proposed in this paper, which integrated the traditional model with the characteristics of VANETs. The model shows that the collision probability in VANETs is no longer a constant value as in traditional model, but a function of the factors reflecting the characteristics of VANETs. It increases along with the increasing of vehicle velocity or vehicle density. Simulation results using Network Simulator 2 (ns-2) show the validity and accuracy of the proposed model.