Prototype for evaluation of wireless technologies in IoT ecosystems

This paper describes the process of designing, building, and evaluating an IoT (Internet of things) ecosystem for three wireless technologies LoRa, Wi-Fi, and BLE. The system has a gateway connected to the internet by LTE and interacts with three sensor nodes; each sensor node uses a different wireless technology. The hardware control device is a Raspberry Pi3, the IoT web platform is a component of Azure. The development provides a flexible, autonomous, heterogeneous, and scalable network for IoT ecosystems that can analyze the real-time of each technology in the ecosystem. For this work real-time means a latency that has a value between 101 ms (milliseconds) and 6012 ms. Performance evaluation results using latency tests and maximum data sending range for each technology shows that the maximum range is 318 meters, and the lowest average latency is 1033 ms in LoRa and LTE interoperability.