we are interested to know EU band restrictions on operating HaLow and how we should prepare for this. From the spec, it says we have 1-2 Mhz channels and also the duty cycle is low (1%)
For our use case, we are streaming data once every 10 seconds. The duration of this transmission is ~400ms. Would this ON time need to be reduced to match duty cycle restrictions for EU?
thanks
@venkatr you are correct that the EU does only have 1 and 2MHz channels. The duty cycle restrictions are 10% for an AP, and 2.8% for a STA and that’s measured over an hour. That means you can transmit for 360 seconds every hour as an AP, and roughly 100 seconds as a STA.
If you’re needing to transmit 400ms every 10 seconds, that is roughly 144 seconds, which is below the AP duty cycle, but exceeds the maximum allowable amount for STA. Note - those times also need to account for MAC layer acknowledgements, management frames, and on the AP - beacon frames.
Our firmware will automatically try to spread your transmissions out across the hour. We do also support a burst mode that lets you send at full throughput up to the duty cycle, but note on the AP side we do reduce the allowable time to ensure that beacons can be transmitted across the whole hour.
Depending on which ETSI standard you certify against, it may be possible to certify a device slightly differently using adaptive frequency agility and avoid the duty cycles, but that is not something we currently offer support for
hi..@swadsworth - thank you for the response. This duty cycle limitations are too restrictive for EU bands. Can you share more details on adaptive freq agility? is this something you will support in future