Análise de desempenho dos protocolos coap, mqtt-sn e http em redes IoT

Abstract

Growing advances in technology have changed the way we deal with the objects we use in our daily lives. The emergence of intelligent objects, equipped with computational and communication resources, takes us to a new reality: the revolution of the Internet of Things. We can define the IoT as an expansion of the current Internet, in which physical objects such as sensors, electronic devices, among others, are interconnected through computer networks and interact with each other. With the advent of IoT, a series of new problems and challenges arose, mainly with regard to communication, due to the limitations of its devices. New protocols have emerged in order to remedy such deficiencies, however, the question also arises: Which application layer protocol to be used? From this, the main objective of this work is to compare the CoAP, MQTT-SN and HTTP application layer protocols, in scenarios that simulate Smart homes and thus identify the most energy efficient, with the lowest rate of packet loss and lower latency. After the creation and execution of the scenarios, and with the energy consumption, latency and packet loss metrics duly collected, it was identified that in all graphs the CoAP protocol did better compared to MQTT-SN and HTTP. This work is aimed at professionals in the field of Information and Communication Technology (ICT) who want to develop and/or improve IoT solutions.