A Data Scheduling Approach for Software Defined Vehicular Ad-Hoc Networks

In recent years, vehicular ad-hoc networks (VANETs) is one of the rapid growing technology to form a network of vehicles and between vehicles and roadside units (RSUs) to provide a variety of services like safety, traffic efficiency and infotainment information to its drivers and passengers. In this paper, we have considered the communications are from V2I, I2V, I2I and on the basis of scheduling algorithm vehicles can download data from RSU. Usually vehicles may request for the same data, therefore we use multicasting techniques to download data from RSU which reduces bandwidth and better scheduling performance. As vehicles are moving at a high speed, it may not be possible to download all the data from the service region of a single RSU and this will be forwarded to the nearby RSU. In our scheme we use SDN based VANET structure where SDN server push content information to the designated RSUs through switches and then to the respective vehicle.