IoT Protocols for Health Care Systems: A Comparative Study

There have been great advances in the field of Internet of Things (IoT) recently. At the same time there are an ever growing request for healthcare systems to progress human health. The previous decade has witnessed the expansion of numerous Internet of Things based applications of healthcare in the application layer of IoT protocol set, there are number of network communication protocols for IoT like HTTP or novel protocols specified to the field of IoT such as CoAP or MQTT. In this paper, we make a comparative study between the network communication protocol Message Queue Telemetry Transport (MQTT) and the Hypertext Transfer Protocol (HTTP) to know the needs of a system, in particular the bandwidth requirements and the volume of generated data. The study is carried out by means of simulation, the comparative study based on the Throughput and end to end delay .To build the simulation environment we used OMNET++ network simulation framework and INET framework. In MQTT the average throughput in the first scenario is (79851.6bit/s) and then it started decreasing in the other scenarios when the number of publishers and subscribers increased until reaching (16786.9bit/s) and the average end to end Delay in first scenario is (0.281 second) and then started increasing in the other scenarios until reaching (0.386second), In HTTP the average throughput in the first scenario is (179.55bit/s) and then it started increasing in the other scenarios when the number of publishers and subscribers increased until reaching (216.8bit/s) and the average end to end Delay in first scenario is (2.256second) and then started increasing in the other scenarios until reaching (2.714second).