Delay efficient software defined networking based architecture for vehicular networks

Vehicular ad-hoc network (VANET) has emerged as a viable solution for network related problems in intelligent transportation system (ITS). However, with its current architecture, VANET has not been able to fulfill some of the necessities of vehicular networks and most importantly still lacking flexibility and programmability. Recently Software Defined Networking (SDN) has been introduced into the vehicular domain in order to overcome the shortcomings in VANET. Though the introduced Software Defined Vehicular Network (SDVN) architectures provide flexibility and programmability into the networks with higher packet delivery ratios (PDRs), they have violated the stringent delay requirement in VANET, provoking questions on its usability. So in this paper, we propose a novel SDVN architecture which gives priority to delay requirements in VANET. We have also compared the delay profiles of VANET and other SDVN architectures with our proposed architecture, both theoretically and experimentally.