Currently, WiFi, 3G/4G mobile communications are very popular and available in almost every place. Many Internet of Things (IoT) applications based on WiFi and 3G/4G technology modules have been developed and applied directly to social life. However, for applications with WiFi also take some limitations such as short distance transmission and large power consumption. | Monitoring environment parameters using IoT and long range data communications, application to smart cities Nghiên cứu khoa học công nghệ MONITORING ENVIRONMENT PARAMETERS USING IoT AND LONG-RANGE DATA COMMUNICATIONS, APPLICATION TO SMART CITIES Ha Duyen Trung1*, Nguyen Huu Trung1, Thai Trung Kien2, Doan Thanh Binh3 Abstract: Currently, WiFi, 3G/4G mobile communications are very popular and available in almost every place. Many Internet of Things (IoT) applications based on WiFi and 3G/4G technology modules have been developed and applied directly to social life. However, for applications with WiFi also take some limitations such as short distance transmission and large power consumption. This will be limited to many applications that do not require large bandwidth but need more practical works for long data transmission distances. Therefore, to overcome these drawbacks, in this paper, we propose the environmental parameters monitoring system in terms of temperature, humidity, CO concentration, , illumination, etc., based on LoRa technologies and IoT. The designed system takes advantages of transmission operation with a maximum distance of up to 15 km and extremely low power consumption. Using the advantages LoRa module will be the perfect choice for the IoT applications to everyone, in places where Wi-Fi and 3G/4G is not available. Not only in remote rural areas but also in city applications such as smart street lighting, parking lots or applications monitoring environmental conditions in industrial/high- park zones. With the development of industrial revolution and IoT applications, LoRa technologies will be one of the common technologies for the near future. Key words: IoT; LoRa; Environment monitoring; Smart City. 1. INTRODUCTION Environmental monitoring and management is becoming more important, as cities grow fast and often uncontrollably. The population of urban residents is estimated .
