Content delivery network for IoT-based Fog Computing environment

With the continuous improvement and evolution of network technologies like IoT which demands the innovation and improvement of legacy networks, as well as, the requirements of end users' Quality of Service (QoS) and Quality of Experience (QoE), new network paradigms have been invented, such as, Content Delivery Network (CDN), IoT and Fog Computing. In addition, the management and controlling of such a network may create an overhead to the network administrators. Therefore, Software-defined Network (SDN) has been introduced as a framework for managing and controlling the network devices where the network abstraction facilitates the introduction innovative solutions and improve the overall performance. In this paper, an SDN based architecture to implement fog-based CDN network was proposed aiming at further improvement on the routing functionalities essential in Fog-based CDN deployment. We have tested the proposed architecture and the results show signif-icant gains. Moreover, we have identified some factors to be considered in such architectures for further per-formance improvement.