MQTT_SN_QoS: an enhanced MQTT protocol for wireless sensor network in smart parking

Abstract

In recent years, wireless sensor networks (WSN) have attracted increasing interest from academia and industry. WSNs can be deployed in various types of environmental monitoring and information gathering applications. In this chapter, we present wireless sensor network architecture for vehicle parking management. In a parking management system, a number of sensor nodes are deployed in a parking field, indicating whether or not the parking spaces are occupied. These sensor nodes are equipped with a battery (cell) that provides the necessary power for their operation. This energy resource is very important for the sensor nodes and has a direct influence on the lifetime of the sensor nodes and thus of the entire WSN. With the integration of the Internet of Things (IoT), we will design a system to offer remote parking reservation, to help drivers to easily locate their parking space, and to manage the lifetime of this WSN. We propose the MQTT_SN_QoS (Message Queuing Telemetry Transport for Sensors Network by Quality of Service) communication protocol with the integration of its QoS levels to overcome these problems, and we simulate the results on Matlab.