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In a drive-thru scenario where vehicles drive by a roadside Access Point (AP) to obtain temporary Internet access, it is important to design efficient resource allocation schemes to fully utilize the limited communication opportunities. In this paper, the authors study the random access problem in drive-thru communications in a dynamic environment, where both the channel contention level and channel capacity vary over time. They assume that a vehicle has a file to upload when it is within the coverage range of the AP. The vehicle will pay a fixed amount each time it tries to access the AP, and will incur a penalty if it cannot finish the file uploading when leaving the AP.
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