Re: [wireless-regdb] Argentina approval of 6GHz band - updates to regdb

Thanks for the info!

Let me try to get a patch. The limits are a bit strange indeed. But
then the law says it should.follow FCC so I'm not sure.

On Fri, Dec 22, 2023 at 1:07 AM Chen-Yu Tsai <[email protected]> wrote:
>
> On Mon, Dec 4, 2023 at 8:26 PM Diego Garcia del Rio <[email protected]> wrote:
> >
> > Dear wireless-regdb / linux-wireless list members,
> >
> > Argentina approved, in may 2023, the use of the 6GHz band for indoor
> > use. The specific decree can be consulted here :
> > https://www.boletinoficial.gob.ar/detalleAviso/primera/287126/20230524
> > but the specific technical addendum can be read at the link "Anexo 1"
> > at the end of that document.
> >
> > The main changes are that operation on the band  5925-7125 MHz is
> > allowed at an EIRP of 30dBm for APs and 24dBm for clients. The APs
> > must also follow a maximum Power Spectral Density 5dBm/MHz  and
> > clients must restrict themselves to -1 dBm/MHz EIRP PSD.
> >
> > I wasn't sure how to express the PSD requirements in the txt file nor
> > how (or if its possible at all) to distinguish APs from clients.
>
> I believe the PSD requirements are being discussed [1]. But currently
> there is no support for this. Also no support for distinguishing APs
> from clients.
>
> > The given PSD limits would mean 18dBm for an AP at 20MHz, and 3dBm for
> > each doubling in frequency, so a max of 27dBm for 160MHz APs)  while
> > for clients, it would be 12dBm for a 20MHz channel and again, 3dBm
> > plus for each doubling in channel width  (maximum of 21 dBm for a
> > 160MHz channel).
> >
> > I believe that basically copying the FCC restrictions for the 6GHz
> > band would probably be enough, but I was not 100% sure.
> >
> > Following James Clark's post mentioning the WiFi alliance's page,
> > argentina is also showing up as having adopted the full 5925-7125
> > range.
> >
> > Sorry I can't provide a direct patch to the DB itself since im not
> > 100% sure how to represent the different power limits. Best regards
>
> I think without a representation for PSD limits, and AFAIK unable to
> have multiple rules for the same band with different requirements,
> we can only use the minimum or the hard EIRP limit and PSD limits,
> so that the client doesn't go above the limit when using narrower
> channels.
>
> So in this case the limit would be 12dBm regardless of channel width.
> Can you send a patch for that? Preferably with a comment on why the
> limit is so low, i.e. as explained above.
>
> We can revisit it if the PSD stuff gets merged.
>
> Thanks
> ChenYu
>
> [1] https://lore.kernel.org/all/[email protected]/
>
> > Thanks!
> >
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