Evaluation of the MQTT Protocol Latency over Different Gateways

The modern world of information and technology has progressed hugely in the past decade. There is no doubt that internet of things (IoT) technologies have developed gradually and evolved the last ten years in drastic ways. IoT combines the useful to pleasant with is implementation in the industry, it is from this concept comes the idea of the industry 4.0. Managing huge amount of data and its uncertainty is very important challenge in the industry field; accordingly, providing the quality of service is a striking requirement that ensures it is operating accurately. This paper deals with the estimation of latency in transferring data from the field to the Cloud based on lightweight protocol MQTT over different gateways, we implemented the IoT tool Node-RED in the gateway for simulation.