Contrast analysis of analytical solution and numerical solution to the VANET mobility model

Considering the high mobility characteristics of vehicular ad-hoc network (VANET), a mobility analytical model and a mobility simulation model were established. The analytic solution and the numerical solution of the VANET degree distribution were obtained by the two proposed mobility models. Comparing the two degree distribution curves, it is shown that there are lot of nodes with small degree values, while a few nodes with huge degree values, which means that the degree distribution follows the power law function, proving that the VANET is a scale-free network. And the theoretical analysis and simulation experiment verified the high robustness of the VANET against random attacks and its vulnerability when facing targeted attacks.