A comprehensive study on MQTT as a low power protocol for internet of things application

Abstract

Power consumption has always been a problem in the Internet of Things community, especially for small wireless devices. The devices need something to power them up in the long run. To achieve a sustainable and power-efficient device, there needs to be some kind of protocol which can conserve power, works well on unreliable networks, and does not compromise security. The study was done to compare the power usage of MQTT (Message Queueing Telemetry Transport) protocol with other several lightweight Internet of Things protocols, which are CoAP (Constrained Application Protocol) and HTTP (Hypertext Transfer Protocol). The comparison was done by measuring the current consumption in each protocols each time the ESP8266 board sends a message to the corresponding server of the protocol in an interval. To conclude, we studied the comparison of power usage in the ESP8266 board with the MQTT protocol and compared it with other protocols.