On 8/13/2024 8:32 AM, Jiaxun Yang wrote:
> As per "工业和信息化部关于加强和规范2400MHz、5100MHz和5800MHz频段无线电
> 管理有关事宜的通知" ("工信部无〔2021〕129号"), only 5250 MHz - 5350 MHz
> band is required to have DFS / TPC.
>
> This is slightly conflicting with is attachment "2400MHz、5100MHz 和
> 5800MHz 频段无线电发射设备射频技术要求", which stated that all devices
> working at 5100 MHz band should implement DFS/TPC.
>
> After consulting authorities, we determined that the requirement in
> attachment should be interpreted as DFS/TPC is only required if the
> device will work in DFS/TPC specified in the article.
>
> Correct regulatory rules to opt-out DFS and revert TPC power deduction
> for 5150 MHz - 5250 MHz.
>
> Reported-by: leslie_sen <leslie_sen@xxxxxxx>
> Fixes: e427ff2a592e ("wireless-regdb: Update regulatory rules for China (CN)")
> Signed-off-by: Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx>
> ---
> db.txt | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/db.txt b/db.txt
> index 788cd049ec21..9a55f6b8cc98 100644
> --- a/db.txt
> +++ b/db.txt
> @@ -416,12 +416,14 @@ country CL: DFS-JP
> (5925 - 6425 @ 320), (12), NO-OUTDOOR
>
> # Source:
> +# https://wap.miit.gov.cn/zwgk/zcwj/wjfb/tz/art/2021/art_e4ae71252eab42928daf0ea620976e4e.html
> # https://wap.miit.gov.cn/cms_files/filemanager/1226211233/attach/20219/d125301b13454551b698ff5afa49ca28.pdf
> # https://www.miit.gov.cn/cms_files/filemanager/1226211233/attach/20236/d1dc19424d5a4cfe90d631adeee8dd58.pdf
> -# Note: The transmit power for 5150-5350MHz bands can be raised by 3dBm when TPC is implemented
> +# Note: The transmit power for 5250-5350MHz bands can be raised by 3dBm when TPC is implemented
> country CN: DFS-FCC
> (2400 - 2483.5 @ 40), (20)
> - (5150 - 5350 @ 80), (20), DFS, AUTO-BW, NO-OUTDOOR
> + (5150 - 5250 @ 80), (23), NO-OUTDOOR, AUTO-BW
> + (5250 - 5350 @ 80), (20), NO-OUTDOOR, DFS, AUTO-BW
> (5725 - 5850 @ 80), (33)
> # 60 GHz band channels 1,4: 28dBm, channels 2,3: 44dBm
> # ref: http://www.miit.gov.cn/n11293472/n11505629/n11506593/n11960250/n11960606/n11960700/n12330791.files/n12330790.pdf
>
> ---
> base-commit: 003c282a297f8cec06a576fe1434c94353d14610
> change-id: 20240813-correct_cn-1d2e30b41e07
>
> Best regards,
You should Cc: wireless-regdb@xxxxxxxxxxxxxxxxxxx
https://wireless.wiki.kernel.org/en/developers/Regulatory/wireless-regdb
