Vehicular Ad hoc Networks (VANET) are expected to have great potential toimprove both traffic safety and comfort in the future. When many vehicles wantto access data through roadside unit, data scheduling become an importantissue. In this paper, we identify some challenges in roadside based dataaccess. To address these challenges we first review some existing schedulingschemes. We then propose a priority scheduling and finally show that using thisidea can increase QOS compare to previous algorithms.
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