In Part 1 of this series, we looked at the demanding requirements placed on low-power wide-area networks (LPWANs) used to support Internet to Things (IoT) applications, and how LoRaWAN was architected specifically to meet them. The protocol's foundation is a sub-GHz spread-spectrum RF PHY that uses variable length chirp modulation to reliably communicate across exceptionally long distances using very low transmit power levels.
Part 1 also introduced you to the "star" topology used by LoRaWAN networks and the basic encryption and verification features that support highly secure wireless data communications amongst three different classes of devices.
In Part 2, we conclude with how these features can be used to implement a wide variety of applications in an equally diverse range of environments.