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Re: [PATCH v2 1/5] wireless-regdb: Update U-NII-2c (5470 ~ 5725 MHz) rules for Taiwan (TW)

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On Tue, Aug 4, 2015 at 2:27 AM, Seth Forshee <seth.forshee@xxxxxxxxxxxxx> wrote:
> On Thu, Jul 23, 2015 at 11:32:56AM +0800, Chen-Yu Tsai wrote:
>> Taiwan's Ministry of Transportation and Communications revised its
>> frequency allocation rules [1] on 2014/11/17, allowing usage of 5600 ~
>> 5650 MHz, previously allocated to weather radars, to U-NII applications
>> with DFS support.
>>
>> Also, the technical regulations [2] show that for 5470 ~ 5725 MHz U-NII
>> applications, the peak transmit power shall not exceed the lesser of
>> 250 mW (slightly less than 24 dBm) or 11 dBm + 10log B, where B is the
>> 26dB emission bandwidth in MHz. This is slightly more than 23 dBm for
>> 20 MHz channels.
>>
>> This patch updates both. Also add links to the two documents into the
>> database.
>>
>> [1] http://www.motc.gov.tw/websitedowndoc?file=post/201411171137330.doc&filedisplay=Table+of+radio+frequency+allocation.doc
>> [2] http://www.ncc.gov.tw/english/show_file.aspx?table_name=news&file_sn=681
>>
>> Signed-off-by: Chen-Yu Tsai <wens@xxxxxxxx>
>
> Sorry for the slow response to these patches.
>
>> ---
>>  db.txt | 10 ++++++++--
>>  1 file changed, 8 insertions(+), 2 deletions(-)
>>
>> diff --git a/db.txt b/db.txt
>> index 982db34..5114557 100644
>> --- a/db.txt
>> +++ b/db.txt
>> @@ -1118,11 +1118,17 @@ country TT: DFS-FCC
>>       (5490 - 5730 @ 160), (24), DFS
>>       (5735 - 5835 @ 80), (30)
>>
>> +# Source:
>> +# Table of Frequency Allocations of Republic of China (Taiwan) / Nov 2014:
>> +#   http://www.motc.gov.tw/websitedowndoc?file=post/201411171137330.doc&; \
>> +#      filedisplay=Table+of+radio+frequency+allocation.doc
>> +# LP0002 Low-power Radio-frequency Devices Technical Regulations / 28 Jun 2011:
>> +#   http://www.ncc.gov.tw/english/show_file.aspx?table_name=news&file_sn=681
>> +#   (section 3.10.1, 4.7)
>>  country TW: DFS-JP
>>       (2402 - 2472 @ 40), (30)
>>       (5270 - 5330 @ 40), (17), DFS
>> -     (5490 - 5590 @ 80), (30), DFS
>> -     (5650 - 5710 @ 40), (30), DFS
>> +     (5470 - 5725 @ 160), (23), DFS
>
> Based on [2], it looks like this range requires TPC, in which case the
> power limit should be dropped by 3 dB on account of our not supporting
> TPC.

Will fix.

Is there any plan to support multiple rules per band? Such as different
power limits with vs without TPC, or something like DFS vs indoor only?


ChenYu
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