[PATCH] wireless-regdb: Update regulatory info for Cayman Islands (KY) for 2024

[Chen-Yu Tsai]

On Tue, Dec 10, 2024 at 11:00 AM Ping-Ke Shih <pkshih at gmail.com> wrote:
>
> From: Ping-Ke Shih <pkshih at realtek.com>
>
> Utility Regulation and Competition Office, Cayman Islands, released
> Operating Parameters for Wireless Data Transmission (including WiFi)
> Services On 18th November 2024 [1].
>
> Both FCC and EU reference are permitted. Adopt FCC reference.
>
> * 2400 - 2483.5 MHz
>   - Part 15.247
>     * 1 Watt
>       For systems using digital modulation in the 902 - 928 MHz,
>       2400-2483.5 MHz, and 5725 - 5850 MHz bands: 1 Watt.
>
> * 5150 - 5350 MHz
>   - Part 15.407
>     * 250 mW
>       For client devices in the 5.15-5.25 GHz band, the maximum conducted
>       output power over the frequency band of operation shall not exceed
>       250 mW provided the maximum antenna gain does not exceed 6 dBi.
>       In addition, the maximum power spectral density shall not exceed
>       11 dBm in any 1 megahertz band.
>
>       For the 5.25-5.35 GHz and 5.47-5.725 GHz bands, the maximum conducted
>       output power over the frequency bands of operation shall not exceed
>       the lesser of 250 mW or 11 dBm + 10 log B, where B is the 26 dB
>       emission bandwidth in megahertz. In addition, the maximum power
>       spectral density shall not exceed 11 dBm in any 1 megahertz band.
>     * DFS: 5.25-5.35 GHz
>
> * 5470 - 5725 MHz
>   - Part 15.407
>     * 250 mW
>       For the 5.25-5.35 GHz and 5.47-5.725 GHz bands, the maximum conducted
>       output power over the frequency bands of operation shall not exceed
>       the lesser of 250 mW or 11 dBm + 10 log B, where B is the 26 dB
>       emission bandwidth in megahertz. In addition, the maximum power
>       spectral density shall not exceed 11 dBm in any 1 megahertz band.
>     * DFS: 5.47-5.725 GHz
>
> * 5725 - 5875
>   - Part 15.407
>     * 1 W
>       For the band 5.725-5.85 GHz, the maximum conducted output power over
>       the frequency band of operation shall not exceed 1 W.
>
> * 5925 - 6425 MHz
>   - Part 15.407 (but no description; reference [2])
>     * -1 / MHz (12 dBm is adopted)
>       Accordingly, the Commission concludes that the appropriate maximum
>       power spectral density for low power indoor client devices in this
>       band is 6 dB below the limit for access points (or -1 dBm/MHz based
>       on the adopted PSD limit).
>     * NO-OUTDOOR
>
> * 57 - 71 GHz
>   - Part 15.255 (but no power value; reference [3])
>     * 40 dBm
>       The average power of any emission shall not exceed 40 dBm and the
>       peak power of any emission shall not exceed 43 dBm.
>
> [1] https://www.ofreg.ky/viewPDF/documents/2024-11-19-16-28-50-OfReg-WiFi-Permitted-Parameters-V2.pdf
> [2] https://www.federalregister.gov/documents/2020/05/26/2020-11236/unlicensed-use-of-the-6-ghz-band
> [3] https://docs.fcc.gov/public/attachments/FCC-16-89A1.pdf
>
> Signed-off-by: Ping-Ke Shih <pkshih at realtek.com>
> ---
>  db.txt | 13 ++++++++-----
>  1 file changed, 8 insertions(+), 5 deletions(-)
>
> diff --git a/db.txt b/db.txt
> index 24195fcac004..37597f9add41 100644
> --- a/db.txt
> +++ b/db.txt
> @@ -1066,12 +1066,15 @@ country KW: DFS-ETSI
>         (5470 - 5825 @ 160), (24), DFS
>         (5925 - 6425 @ 320), (200 mW), NO-OUTDOOR
>
> +# Source: https://www.ofreg.ky/viewPDF/documents/2024-11-19-16-28-50-OfReg-WiFi-Permitted-Parameters-V2.pdf
>  country KY: DFS-FCC
> -       (2402 - 2482 @ 40), (20)
> -       (5170 - 5250 @ 80), (24), AUTO-BW
> -       (5250 - 5330 @ 80), (24), DFS, AUTO-BW
> -       (5490 - 5730 @ 160), (24), DFS
> -       (5735 - 5835 @ 80), (30)
> +       (2400 - 2483.5 @ 40), (1000 mW)
> +       (5150 - 5250 @ 80), (250 mW), AUTO-BW
> +       (5250 - 5350 @ 80), (250 mW), DFS, AUTO-BW
> +       (5470 - 5725 @ 160), (250 mW), DFS, AUTO-BW

Sorry for the late reply.

Can you follow the TW example and extend this band by 5MHz and also
drop the AUTO-BW?

> +       (5725 - 5875 @ 80), (1000 mW), AUTO-BW

AUTO-BW for this band doesn't make sense. While the frequency ranges do
align up, the channel assignments don't, so there's no way one can combine
this and the previous band for a 160 MHz channel.


Thanks
ChenYu

> +       (5925 - 6425 @ 320), (12), NO-OUTDOOR
> +       (57000 - 71000 @ 2160), (40)
>
>  # Source:
>  # http://adilet.zan.kz/rus/docs/V1500010730
> --
> 2.25.1
>