Modeling and analyzing the performance of IoT systems using IoTSim-Edge: a comparative study of data transfer protocols
Abstract
In this paper, a study of the capabilities of the IoTSim-Edge simulation environment for analyzing the performance of IoT systems in the context of edge computing is presented. An experimental comparison of the MQTT, CoAP, and HTTP protocols was conducted in terms of response time, transmission reliability, and energy efficiency. The experimental results show that MQTT provides stable performance with an average response time of 42.0 ms and 100% packet delivery reliability in a network of twelve IoT devices. CoAP demonstrated 40.6% faster response time (22.7 ms) and 68.3% higher throughput, while consuming 9.9% less energy compared to MQTT. HTTP exhibited significantly lower performance with response times of approximately 4.91 seconds, limiting its applicability in real-time IoT scenarios. The study confirms that IoTSim-Edge is an effective tool for evaluating IoT infrastructure performance without physical hardware deployment.