Performance Analysis for Traffic-Aware Utility in Vehicular Ad Hoc Networks

As one of the key research topics in Vehicular Ad Hoc Networks (VANETs), analysis of traffic-aware utility is always difficult to be solved properly. In order to make the utility function be more suitable for the realistic network environment, a performance analysis for the utility function of different traffic is conducted in this paper. We consider two types of traffic, best effort traffic and real time traffic, and develop the form of utility functions for various traffic in VANETs. To model the dynamic features in VANETs more generally, the Poisson process and the traffic flow theory are used to describe the vehicle's mobility. According to the theoretical analysis proposed in this paper, the conditional probability density function (pdf) of utility function for different traffic in VANETs can be deduced, which is much easier to be applied to the design of resource allocation algorithm for VANETs. Performance evaluation is conducted to verify the accuracy of our analysis.