Cloud-assisted dynamic spectrum access for VANET in transportation cyber-physical systems

Vehicular networking is regarded as a backbone for transportation cyber-physical systems (CPS). In this paper, we propose a cloud-assisted dynamic spectrum access in vehicular networks where vehicles search the spectrum database for idle channels. Each vehicle queries spectrum database periodically (every other time/distance unit or so) for a route computed by GPS to find idle channels. When two vehicles are within the communication range, they setup a communication link in a channel and exchange their data with the help of software defined radios. The performance of the proposed approach is evaluated with the help of numerical results obtained from simulations.