LoRa, the abbreviation of Long Range, is a kind of Low Power Wide Area Network (LPWAN) communication technology. Before LPWAN came out, there could only be a trade-off between long-distance transmission and low power consumption. The LoRa wireless technology has changed the trade-off way between the transmission distance and power consumption. It not only achieves long-distance transmission, but also has the advantages of low power consumption.

The network of LoRa is shown in the figure below. Remote nodes can connect to the network server through multiple gateways and upload data to the cloud or server. In the LoRa network, each node is not connected to each other, but must be connected to the gateway before being connected back to the central host or data can be transmitted to another node through the central host. The message of the terminal node can be transmitted to multiple gateways at the same time, and the message can also be bridged between the gateways to further extend the transmission distance. LoRa can be used in various scenarios, such as smart industry, smart agriculture, smart city, etc. Due to its long-distance transmission and low power consumption characteristics, it can meet the transmission application of small data volume . LoRa can usually be used for transmission of less than 10 kilometers. 

LoRaWAN is a low-power wide area network standard launched by the LoRa Alliance for defining the communication protocol and system architecture based on LoRa technology. It can effectively realize the LoRa physical layer to support long-distance communication. This protocol and architecture has a profound impact on the battery life, network capacity, service quality, security of the terminal nodes for suitable application scenarios. LoRaWAN is actually a kind of WAN (Wide Area Network).

Nuvoton provides a complete LoRoWAN ecosystem.This ecosystem provides the sensor device development platform and LoRaWAN gateway that is fully compliant with LoRaWAN Class A/C standard. 

The supported frequency bands are shown in the table.

The detailed specifications and related development resources of this system are illustrated below.

LoRaWAN Gateway Features:

• Linux OS Ver4.4
• Supports The Things Network
• RAK7246G 915MHZ
• 1Gb SPI NAND
• RS485 x 2
• SD Card
• 10/100Mb Ethernet
• USB HS Host supports USB Wi-Fi
• IC：NUC980DK61Y

LoRaWAN Sensor Device Features:

• Arm Mbed OS 5
• Supports LoRaWAN Class A/C
• LoRa Module
  • Supports 868-915MHz or 433-470MHz
• IC：M252KG6AE