The Low Power Wide Area Networks (LPWANs) represent a new trend in the evolution of the wireless communication technologies that target static and mobile Internet of Things (IoT) applications requiring energy efficiency, scalability and coverage. One of the most successful technologies in the LPWAN is LOng RAnge Wide Area Networking LoRaWAN. LoRaWAN uses an adaptive data rate (ADR) mechanism at the network server(NS) to meet the requirements of IoT-enabled applications. By controlling the spreading factor (SF) and transmit power (TP), ADR seeks to provide EDs with the efficient resources for reliable and energy saving transmission. However, such algorithm may have high convergence period because of the scalability of LoRaWAN network and variable channel conditions.