WiFi and ZigBee have limited range, and cellular can be too expensive and power hungry. So numerous alternatives for Low Power Wide Area Networking (LPWAN) have arisen to serve the needs of the Internet of Things (IoT). These alternatives include especially LoRaWAN, Sigfox a Weightless.
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Updated 13. 02. 2018: Minor changes to LoRaWAN and Sigfox parameters