Digital Twin Orchestrated Software-Defined Networks for Handling Denial of Service Attacks in IoT Applications

Abstract

The paper discusses the implementation and analysis of a digital-twin-orchestrated preemptive-switching scenario for sensor-data transmission over physical network interface links. The experimental setup in this work uses physical interface connections based on radio and optical interfaces, defined by the standards of IEEE 802.11n wireless local area network (WLAN) and IEEE 802.15.7-based visible light communications, respectively. Data transmission at physical interfaces is managed using a software-defined network controller that defines traffic flows based on processing commands from the network digital twin, which is modeled for telemetry analysis and decision making. The statistical average of the measurements shows a delay of less than 200 ms for achieving the switching procedure. The implementation provides benefits for wireless sensor networks and the Internet of Things, improving the availability and resilience of sensor nodes by complementing radio-sensitive environments for critical data transmission.