An efficient heuristic switch migration scheme for software-defined vehicular networks

Abstract

Software-Defined Vehicular Networks (SDVNs) have been a vital addition to the design of intelligent vehicular networks. SDVNs elevate the constraints of static hardware network devices by using programmable units, providing a global view of the network status, and standardizing the interface between different wireless access technologies. However, the static deployment and assignment of switches to control units do not consider vehicular network's rapid mobility changes and diverse densities. In this article, we propose a mobility-based heuristic switch migration scheme for software-defined vehicular networks. The proposed approach utilizes vehicles' mobility among switch-enabled roadside units to efficiently migrate selected switches between different controllers. The proposed scheme efficiently migrated switch-enabled roadside units between distributed control units while maintaining low vehicles' migration delay and cost. We have evaluated the proposed method under different environments and scenarios and reported its migration cost and delay performance.