Performance analysis on conditional connectivity for vehicular ad hoc networks

This paper evaluates the conditional connectivity performance for vehicular ad hoc networks. Conditional connectivity is the probability that a communication pair can stay connected during a whole data transmission conditioned on the connection is successfully built up when the transmission is initialized. To analyze the conditional connectivity, a simplified but reasonable unidirectional highway model is proposed in this paper. By combining the probability density function of inter-vehicle initial distance and the distribution of vehicles´ relative speed, which are both derived in this paper, the closed-form of conditional connectivity is obtained. All the analysis results are validated by extensive simulations.