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August 2020

LoRaWAN technologies hit the right spot.

LoRaWAN is good. It uses unlicensed radio spectrum, so is inherently cheaper than licensed mobile networks. The system relies on the Industrial, Scientific and Medical (ISM) bands, available globally. In North America, it is centred around 915 MHz - close to valuable cellular frequency bands.

The sensors send datagram packets over the air using a Chirp Spread Spectrum (CSS) modulation technique, called LoRa. Building on LoRa modulation techniques, a wide-area networking specification has been created called LoRaWAN.

In LoRaWAN, gateways listen for uplinks and forward all valid packets to their Network Server. A single uplink may be heard by multiple gateways, each forwarding to its associated Network Server. Multiple packets received at the Network Server are consolidated into one event. These telemetry events can be decoded and sent to subscribing applications. Moreover, multiple received uplinks can be timestamp analyzed to provide location information - no GPS!

Gateways can also send downlinks to devices. This allows changing sensor parameters, upgrading firmware and more.

If you are interested to learn more, or discuss your business needs, please contact us.