Performance Comparison of IoT Communication Protocols

The amount of systems based on Internet of Things (IoT) has grown at an unprecedented rate over the last years and such an expansion tends to continue. As a consequence, billions of devices are expected to be deployed on diverse industries (e.g., healthcare, automotive) during the next decade. Due to its heterogeneity, the communication of IoT devices is a prominent system function and, thus, distinct communication protocols have been proposed for these systems. This paper presents a performance evaluation of IoT communication protocols for the application layer: AMQP, CoAP, and MQTT. Throughput, message size, and packet loss are the adopted metrics and experiments indicate CoAP protocol provides the best results.