MQTT Messaging-Based Monitoring of Multi-Storied Residential Buildings in Smart Cities

Abstract

All the traditional things, from infrastructure to supply chain, are rapidly being converted to smart things with the development of the Internet of Things and its massive sensor catalogue. The idea is theoretically amazing, but while implementing it, scaling becomes a major issue. Massive IoT methodologies take care of the pesky scaling issues, while enhancing the overall quality of the network’s communication. Smart cities are in the current research to make human life easy and comfortable. Most of the multi storied buildings are designed smart to achieve safety, security, and comfort. However, just deploying sensors into the buildings do not solve the purpose. Monitoring the buildings require data exchange between sensors to users for appropriate analysis and interpretation. It is really crucial to monitor all the sensor data to provide an amazing quality of life experience. However, the massive IoT technology solves the problem of handling hundreds of sensors at a time through light weight messaging protocols like MQTT and CoAP. An architecture is proposed that uses the MQTT Protocol paired with various sensors and edge devices for the monitoring of residential buildings and simplifying such projects. A methodology focusing on the scale, payload and quality of service is proposed in this manuscript. The edge broker scales the number of sensors from 217 per edge node to 1254 sensors with 5 Edge Broker nodes, which is an increment of 5.7 times.