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 to
the future DIS (Disaster Information System) with IoT devices. However, it is considered that the
increased IoT data would cause congestions for Internet services, and it is necessary to consider the
QoS (Quality of Service) controls for the system. Therefore, this paper proposes the QoS control
methods 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 the
routing, IoT data is classified into four categories, and the proper route is selected by the Dijkstra’s
algorithm with the QoS priority values of the classifications. Also, the switching functions are introduced
to avoid network congestion in the selected route. In the switching, if the IoT traffic load
reaches more than 80 percent of the maximum throughput of the selected route, the IoT data is distributed
by the additional route. The paper then reports the implementations of the prototype system
by using the SDN, and the experiments show the effectiveness of the proposed methods.