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References: <20240603060558.98791-1-pkshih@realtek.com> <20240603060948.99147-1-pkshih@realtek.com>
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Reply-To: wens@kernel.org
From: Chen-Yu Tsai <wens@kernel.org>
Date: Tue, 4 Jun 2024 18:34:02 +0800
Message-ID: <CAGb2v65j604KUiVDiXSAbpJQQetGagFj53E8zuk6JqwaDdBk3w@mail.gmail.com>
Subject: Re: [PATCH 4/4] wireless-regdb: Update regulatory info for Mexico
 (MX) on 6GHz
To: Ping-Ke Shih <pkshih@realtek.com>
Cc: linux-wireless@vger.kernel.org, wireless-regdb@lists.infradead.org
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On Mon, Jun 3, 2024 at 2:10=E2=80=AFPM Ping-Ke Shih <pkshih@realtek.com> wr=
ote:
>
> The Plenary Session of the Federal Telecommunications Institute (IFT)
> determined, in its IV ordinary session of 2023, to classify the
> 5925 - 6425 MHz frequency segment as free spectrum and issued the
> technical operating conditions that allow coexistence with the existing
> services in the country [2].
>
> Within the operating conditions of this band as free spectrum, its use wa=
s
> determined for low power indoor and very low power indoor and outdoor
> systems.
>
> According to WBA Response to the Mexico IFT 6 GHz Consultation [3]. The
> Low Power Indoor is
>         33 dBm Max Tx Power (EIRP) & 8dBm/MHz PSD (EIRP) for Access Point=
s
> and
>         27 dBm Max Tx Power (EIRP) & 2dBm/MHz PSD (EIRP) for Clients
>
> The Very Low Power is 4 dBm Max Tx Power (EIRP)
>
> [1] https://www.ift.org.mx/comunicacion-y-medios/comunicados-ift/es/el-pl=
eno-del-ift-clasifica-la-banda-de-5925-6425-mhz-como-espectro-libre-comunic=
ado-132023-16-de

Not sure what this reference is for?

> [2] https://www.ift.org.mx/sites/default/files/comunicacion-y-medios/comu=
nicados-ift/comunicado13ift_1.pdf
> [3] https://www.ift.org.mx/sites/default/files/industria/temasrelevantes/=
consultaspublicas/documentos/20210119-cpi6ghz2020-162.pdf

[2] does not say what limits were adopted, nor that the WBA's
recommendations [3] were adopted in its entirety. Without such
wording, [3] is just a recommendation, not the final rule. This
needs some more information.

>
> Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
> ---
>  db.txt | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/db.txt b/db.txt
> index 1999086d4694..970f47a87247 100644
> --- a/db.txt
> +++ b/db.txt
> @@ -1293,12 +1293,16 @@ country MW: DFS-ETSI
>         (5250 - 5330 @ 80), (20), DFS, AUTO-BW
>         (5490 - 5710 @ 160), (27), DFS
>
> +# Source:
> +# https://www.ift.org.mx/sites/default/files/comunicacion-y-medios/comun=
icados-ift/comunicado13ift_1.pdf
> +# https://www.ift.org.mx/sites/default/files/industria/temasrelevantes/c=
onsultaspublicas/documentos/20210119-cpi6ghz2020-162.pdf
>  country MX: DFS-FCC
>         (2402 - 2482 @ 40), (20)
>         (5170 - 5250 @ 80), (17), AUTO-BW
>         (5250 - 5330 @ 80), (24), DFS, AUTO-BW
>         (5490 - 5730 @ 160), (24), DFS
>         (5735 - 5835 @ 80), (30)
> +       (5925 - 6425 @ 320), (33), NO-OUTDOOR

We consider Linux systems as client devices, thus the lower limit would
apply.


Thanks
ChenYu

>
>  # Source:
>  # https://www.mcmc.gov.my/skmmgovmy/media/General/CA-No-1-of-2022_-signe=
d_19012022.pdf
> --
> 2.25.1
>