Ensuring Fair Access in IEEE 802.11p-Based Vehicle-to-Infrastructure Networks
IEEE 802.11p is an approved amendment to the IEEE 802.11 standard to facilitate Wireless Access in Vehicular Environments (WAVE). In this paper, the authors present an analytical model to evaluate the impact of vehicle mobility on the saturation throughput of IEEE 802.11p-based Vehicle-To-Infrastructure (V2I) networks. The throughput model is then used to investigate an unfairness problem that exists in such networks among vehicles with different mobility characteristics. Assuming a saturated network, if all the vehicles in the network use the same MAC parameters, IEEE 802.11p MAC protocol provides equal transmission opportunity for all of them, provided they have equal residence time in the coverage area of a Road Side Unit (RSU).