A Survey: Use of SDN on DSDV Routing Protocol in VANET

Today, it is obvious that passengers need safe transportation system. Vehicular Ad Hoc Networks (VANET) plays a major role to satisfy the need for transportation and establishing infotainment services. Those services are provided by using routing protocols which are classified into three: Reactive, Proactive and Hybrid. In this work, we propose a novel technique to improve the performance of Destination Sequenced Distance Vector protocol (DSDV), which is of Proactive type. The improvement is using Software Defined Network (SDN) which enables DSDV protocol to choose the best path to deliver packets from source to destination. Controller and switch are the two main components of SDN which communicates each other using OpenFlow protocol. Nodes (vehicles) consult controller, which have path trust value of each node, to get a non-congested as well as free path and sends the packets to the destination. Using SDN enables us to solve one of the drawbacks of DSDV protocol, packet delay.