A Multiple-Path Routing Model for Quality of Service in Software Defined Networking

The Internet of Things (IoT) has recently emerged as a new family of technologies that allow a great number of things to be connected over heterogeneous networks. Conventional networks, however, face a technological barrier in efficiently handling such a large number of devices. The approach based on software-defined networks (SDNs), with its speed and flexibility, has recently been introduced into IoT area to potentially achieve scalability and adaptability, resulting in the SDN-IoT, a unique IoT design. In this work, we describe a new multiple-path routing model for the SDN-IoT. This model consists of two components: 1) a congested source path discovery technique; 2) a multi-path selection method taking into account route similarity and priority. In this paper we first describe the SDN based Quality of Service and highlight the unique features of this routing technique, then report on the performance evaluation of such system, which achieves an approximate 17% decrease in packet loss ratio over the existing approaches.