WiF Transmit Power Control (TPC) Regulatory Requirements?

[Chen-Yu Tsai]

Hi folks,

I wanted to clarify the current state of things.

As far as I know the kernel doesn't have facilities to support TPC or
transmit power control, nor does the wireless-regdb database. And so
in the database we would either omit rules that require TPC, or include
alternative rules (as specified by local regulations) not requiring TPC.
Am I right?

This came up recently with regulatory changes for Singapore and Armenia.

For Singapore [1], the 5.250 – 5.350 GHz range has provisions that allow
usage without TPC at a lower power, but the 5.470 – 5.725 GHz does not.

For Armenia [2], the updated text (translated by Google Translate) as I
read it requires TPC for all 5 GHz channels.


Thanks
ChenYu

[1] https://www.imda.gov.sg/-/media/imda/files/regulation-licensing-and-consultations/ict-standards/telecommunication-standards/radio-comms/imdatssrd.pdf
[2] https://www.arlis.am/DocumentView.aspx?DocID=181829