A modified 802.11-based MAC scheme to assure fair access for vehicle-to-roadside communications
Computer Communications
IEEE Communications Magazine
A tutorial survey on vehicular ad hoc networks
IEEE Communications Magazine
Performance analysis of the IEEE 802.11 distributed coordination function
IEEE Journal on Selected Areas in Communications
Analytical Models and Performance Evaluation of Drive-thru Internet Systems
IEEE Journal on Selected Areas in Communications
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In this paper, we address an unfairness problem that exists among vehicles of distinct mean velocities in a Vehicle-to-Infrastructure (V2I) network used for drive-thru Internet applications. A vehicle moving with higher velocity has less chance to communicate with the Road Side Unit (RSU), as compared to the slow moving vehicle, due to its shorter residence time in the coverage area of RSU. Accordingly, the data transfer of a higher velocity vehicle gets degraded significantly, as compared to that of the vehicle with lower velocity, resulting in unfairness among them. In this paper, our aim is to resolve this unfairness problem by assigning Transmission Opportunity (TXOP) limits according to vehicle's mean velocity. Using an analytical model, we prove that tuning TXOP limit proportional to mean velocity can ensure fairness among vehicles belonging to distinct classes of mean velocities, in the sense of equal chance of communicating with RSU. Analytical results are validated using extensive simulations.