Comparing LoRaWAN and Sigfox is like comparing apples and oranges.
Both are low-power, wide-area network (LPWAN) technologies used for connecting Internet of Things (IoT) devices, but they have different technical architectures, protocols, and operating characteristics.
LoRaWAN = device to device, Sigfox = device to cloud
LoRaWAN signal is used between LoRaWAN devices only.
E.g. LoRaWAN sensor sends data to LoRaWAN gateway.
Sigfox signal is used between Sigfox devices and Sigfox cloud.
E.g. Sigfox sensor sends data to Sigfox cloud.
Characteristics of LoRaWAN
Characteristics of Sigfox
An alternate device-to-cloud technology is NB-IoT
Characteristics of NB-IoT
Will discuss the use cases in a future article
Hope this article provides clarity on the IoT technologies mentioned above.