Delay Reduction in MTC Using SDN Based Offloading in Fog Computing

Abstract

Abstract Fog computing (FC) brings a Cloud close to the users, and improves the quality of service and delay services. In this article, the converged FC and Software-Defined-Networking (SDN) have been proposed to implement complicated mechanisms of resource management. SDN has suited the practical standard for FC systems. The priority and differential flow space allocation has been applied to arrange this framework for the heterogeneous request Machine-Type-Communications. The delay-sensitive flows are assigned to a configuration of priority queues on each Fog. Due to limited resources in the Fog, a promising solution is offloading flows to other Fogs a decision-based SDN controller. The flow-based Fog nodes have been modeled according to the queueing theory, where polling priority algorithms have been applied to service the flows and to reduce the starvation problem in a multi-queueing model. It is observed that the proposed mechanism notably reduces the computation and transmission delay and the count of the drops.