Using publish/subscribe for short-lived IoT data

Abstract

Efficient distribution of loT sensor data requires one-to-many communication, for which publish/subscribe is a better communication approach than request/response. In this paper, the goal is to identify the/those publish/subscribe proto-col(s) that are best suited for loT data. The premise is that data should be as fresh as possible. Hence, the metric is end-to-end delay and the recommended approach is the solution that yields the lowest delay under the test conditions. Raspberry Pi 3 was used as the testbed, since it is representative as an loT platform. The protocols evaluated are: AMQP, MQTT, MQTT-SN, STOMP, WSN, and XMPP, as well as using a mediation service to translate between them.