An Offline Online Strategy for IoT Using MQTT

Internet of Things is capturing attention of consumer and enterprise electronics market with rapid implementations in home automation, smart cities, etc. Several power efficient, low cost sensors have been made available to developers to build these applications. A common theme here is the mode of communication where the computationally intensive work is being done at server side and the sensor-actuator work in done at client side. This requires networking infrastructure to be robust which is not the case across the world. To reduce the risk of failure, we propose an offline online strategy for IoT applications where MQTT protocol is used for asynchronous communication. We implement a portable e-voting system on Intel Galileo to demonstrate the feasibility of such an extension without compromising on functionality.