LPWAN networks

 LPWAN networks


LPWANs are wireless, low-power, low-speed and long-range networks networks, optimized for equipments needing an autonomy of several years.  LPWANs use the unlicensed frequency bands called ISM (Industrial, Scientific, Medical). The use of ISM bands implies the sharing of resources with competitors and other competitors and with other technologies (Wifi, Zigbee, Bluetooth, RFID, etc.). 

This type of network is suitable for applications that need long-range communications (dozens of km). 

This type of network is suitable for applications that need long range communications (dozens of km) and that use low power objects. The transmission transmission speed for LPWAN is 300 bps to 5 kbps (with a bandwidth of 125 kHz). 

We can find these networks in smart cities, precision agriculture, e-health, etc...




LoRa vs Sigfox

- Sigfox is designed to send 140 messages of 12 bytes at 300 bauds per day and receive 4 messages per day receive 4 messages per day while LoRa sends longer messages (5Kb) and without limitation.

- LoRa dynamically optimizes the link between the object (Node) and the gateway which allows longer ranges (more than 15Km in plain).

- The LoRa protocol is licensed under "Semtech" but is based on a "free" network, whereas Sigfox uses a "free" network. 

Sigfox uses the private networks of telephone operators.

- The LoRa radio is based on a spread spectrum transmission. Low amplitude but wide spectrum. The Sigfox radio is based on a transmission on a frequency spectrum (Ultra Narrow Band) but with more power.



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