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As vehicular networks become popular and many vehicles want to access data through a roadside unit. In this paper, there was a vehicle to roadside communication and the authors propose scheduling schemes for efficient delivery of data packets in vehicular ad hoc network. On the basis of priority scheduling algorithm vehicles can download/upload the data from RSU. In this paper, the authors can control the congestion and delay of data by assigning the priorities to the message. The process with highest priority is executed first and highest priority is assign to those processes which have the smallest data size and this scheme is the Smallest Data size First scheduling (SDF).
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