Inside VANET: hybrid network dimensioning and routing protocol comparison 指導教授:陳定宏 教授 學 生:董藝興 Introduction • The VANET can be used for driver-vehicle safety applications and non-safety applications. • Moreover, the routing protocol has to be efficient in this high mobility context where topological changes are very frequent. Introduction • It uses techniques of micro simulations to obtain realistic trajectories of vehicles on a highway. Connection Lifetimes Connection Lifetimes Dimensioning the hybrid network • λ corresponds to the mean number of vehicles per kilometre. • we assume that the radio range of all nodes is a ball of radius R. • exp { λR }:The mean number of vehicles per cluster Dimensioning the hybrid network Dimensioning the hybrid network • We can guarantee with a probability of 1 − ε that a vehicle can reach an AP if P (C ≥ L) ≥ 1 − ε , SIMULATION