Performance Analysis of 802.11-Based Internet Access for Highways With Multiclass Traffic Flows
Several vehicular applications rely on Vehicle-To-Infrastructure (V2I) communications. So far, most existing work focused on analyzing the performance of V2I communications when very few vehicles are involved. However, as the market penetration rate of cars equipped with wireless communication devices increases, it is reasonable to envisage that packet collisions due to multiple contending vehicles can cause significant performance degradation. Thus, in this paper the authors formulate exact and approximate models to estimate the MAC-layer upload capacity and the total amount of bytes transferred by a vehicle during its sojourn within the coverage area of a roadside AP, taking into account spatial distribution of vehicles, as well as traffic and road characteristics.