SDN based QoS Control Methods with the Classifications of IoT Data Transmissions for Disaster Information Systems

Abstract

With the recent IoT (Internet of Things) technology developments, new functions are expected tothe future DIS (Disaster Information System) with IoT devices. However, it is considered that theincreased IoT data would cause congestions for Internet services, and it is necessary to consider theQoS (Quality of Service) controls for the system. Therefore, this paper proposes the QoS controlmethods using the SDN (Software Defined Network) by the classifications of IoT data transmissions.In detail, first of all, the routing functions with the Extend Dijkstra’s algorithm is introduced. In therouting, IoT data is classified into four categories, and the proper route is selected by the Dijkstra’salgorithm with the QoS priority values of the classifications. Also, the switching functions are introducedto avoid network congestion in the selected route. In the switching, if the IoT traffic loadreaches more than 80 percent of the maximum throughput of the selected route, the IoT data is distributedby the additional route. The paper then reports the implementations of the prototype systemby using the SDN, and the experiments show the effectiveness of the proposed methods.