OTAA setup Ch plan for motes

[pshansen]

I have a RN2483A module that joins via OTAA to a MTCDTIP-LEU1-266A Firmware 1.6.2.

The RN2483A factory channel plan is:
Freq Duty c
Ch Mhz %
0 868.100 0.330
1 868.300 0.330
2 868.500 0.330

After the join the channel plan look like this:
Freq Duty c
Ch Mhz %
0 868.100 0.330
1 868.300 0.330
2 868.500 0.330
3 867.100 0.100
4 867.300 0.100
5 867.500 0.100
6 867.700 0.100
7 867.900 0.100

As far as I can see the duty cycles for ch# 3-7 could be set higher i.e. to 0.200% as the sum of duty cycles must not exceed 1% within a band:

EU band g 863.0 – 868.0 MHz 1% (*
EU band g1 868.0 – 868.6 MHz 1% (*
*) source: thethingsnetwork.org

How can I change the channel plan in the network server?
I can change the “center frequency” of ch# 3-7 but not the duty cycle distribution. At least not by the web interface.

PS#1: Should I have misunderstood and the 1% duty cycle is for all bands together then the above plan is still not correct but even in violation of regulations with a duty cycle sum of 1.5%. Duty cycles for all channels (0-7) should then be set to 0,125%. Shouldn’t they?

PS#2: I know I can change the plan in the mote after join but I prefer to have the plan set/controlled by the network server.

• This topic was modified 6 years, 5 months ago by pshansen.

[Jason Reiss]

There is no command for the server to send individual channel duty-cycle information. Only channel frequency and datarate range is provided.

https://www.microchip.com/wwwproducts/en/RN2483

http://ww1.microchip.com/downloads/en/DeviceDoc/40001784F.pdf
See page 42 note 1

Note 1:
The default settings consider only the three default channels (0-2), and their default
duty cycle is 0.33%. If a new channel is created either by the server or by the user,
all the channels (including the default ones) must be updated by the user in terms
of duty cycle to comply with the ETSI regulations

[pshansen]

Thank you for the quick response!

Just to clarify. Even though you are referring the RN2483 docs this is not specific to the RN2483 module i.e. there is simply no means in the protocol for a server to provide the duty cycle to an end device – correct?

[Jason Reiss]

Correct lorawan does not provide the messaging for duty-cycle on a per channel basis.

There is only a global duty-cycle limit that can be imposed by the network server.

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