[wireless-regdb] [PATCH 2/3] wireless-regdb: enable VHT80 when world roaming

[Green, Michael]

If this discussion is about Japan, then yes, VHT160 on the allowed channels for Japan, can be enabled now.

Or is the question about enabling VHT80 & VHT160 in world mode(s) using passive scanning?

Michael Green
green at qca.qualcomm.com

Qualcomm Atheros, Inc.
781-400-1491 (office)
508-380-4921 (cell)


-----Original Message-----
From: mcgrof at gmail.com [mailto:mcgrof at gmail.com] On Behalf Of Luis R. Rodriguez
Sent: Tuesday, April 09, 2013 4:26 AM
To: Johannes Berg
Cc: John W. Linville; wireless-regdb at lists.infradead.org; Kandala, Srinivas; linux-wireless; qca_vkondrat; Green, Michael; Wang, Yunsen
Subject: Re: [wireless-regdb] [PATCH 2/3] wireless-regdb: enable VHT80 when world roaming

On Mon, Apr 8, 2013 at 11:51 PM, Johannes Berg <johannes at sipsolutions.net> wrote:
> On Mon, 2013-04-08 at 22:52 -0700, Luis R. Rodriguez wrote:
>> From: "Luis R. Rodriguez" <mcgrof at do-not-panic.com>
>>
>> For VHT, the wider bandwidths (up to 160 MHz) need to be allowed. 
>> Since world roaming only covers the case of connecting to an AP, it 
>> can be opened up there, we will rely on the AP to know the local 
>> regulations.
>>
>> Based on a patch by Johannes Berg for upstream Linux.
>
>> --- a/db.txt
>> +++ b/db.txt
>> @@ -6,10 +6,10 @@ country 00:
>>       # Channel 14. Only JP enables this and for 802.11b only
>>       (2474 - 2494 @ 20), (3, 20), PASSIVE-SCAN, NO-IBSS, NO-OFDM
>>       # Channel 36 - 48
>> -     (5170 - 5250 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS
>> +     (5170 - 5250 @ 80), (3, 20), PASSIVE-SCAN, NO-IBSS
>>       # NB: 5260 MHz - 5700 MHz requies DFS
>>       # Channel 149 - 165
>> -     (5735 - 5835 @ 40), (3, 20), PASSIVE-SCAN, NO-IBSS
>> +     (5735 - 5835 @ 80), (3, 20), PASSIVE-SCAN, NO-IBSS
>
> I also have a separate upstream patch that I haven't sent here yet to 
> enable 160 MHz by enabling the radar channels (passively), see below; 
> any thoughts on that?

Enabling it passively seems fine to me. Michael if we take care of DFS / passive scan, etc, are we still OK to use VHT160 if we find an AP that uses it on the DFS channels (assuming client follows channel change announcements, etc)?

  Luis