[ath9k-devel] 5 MHz and 10 MHz channel bandwidth available on any Atheros agn-Card?

[ath9k-devel] 5 MHz and 10 MHz channel bandwidth available on any Atheros agn-Card?

[Nick Lee - Unex]

As far as I knew, Atheros 11n (including AR9xxx) ART does not support 5/10 MHz bandwidth control. Thus, no AR9xxx wifi card can support 10MHz bandwidth now.

By the way, can you tell me where I can find 802.11p driver for AR5414-based wifi? 
Nick Lee


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Re: [ath9k-devel] 5 MHz and 10 MHz channel bandwidth available on any Atheros agn-Card?

[Luis R. Rodriguez]

On Thu, Nov 26, 2009 at 12:06:53AM -0800, Nick Lee - Unex wrote:
> <--some incoherent deductions-->
> no AR9xxx wifi card can support 10MHz bandwidth now.

Let me clarify on your inaccurate deliberations. Harware-wise AR5416 can support
5 / 10 MHz channels, but this is not supported through software. The newer
family of chipsets AR9280, AR2985, AR9287 all do not support 5 / 10 MHz channels
either in harware or software. So it is fair to say ath9k will not support
5 MHz / 10 MHz channels.

  Luis

[ath9k-devel] 5 MHz and 10 MHz channel bandwidth available on any Atheros agn-Card?

[Luis R. Rodriguez]

On Thu, Nov 26, 2009 at 12:06:53AM -0800, Nick Lee - Unex wrote:
> <--some incoherent deductions-->
> no AR9xxx wifi card can support 10MHz bandwidth now.

Let me clarify on your inaccurate deliberations. Harware-wise AR5416 can support
5 / 10 MHz channels, but this is not supported through software. The newer
family of chipsets AR9280, AR2985, AR9287 all do not support 5 / 10 MHz channels
either in harware or software. So it is fair to say ath9k will not support
5 MHz / 10 MHz channels.

  Luis

[ath9k-devel] 5 MHz and 10 MHz channel bandwidth available on any Atheros agn-Card?

[Robert Budde]

On Mon, Dec 14, 2009 at 11:19:47AM -0800, Luis R. Rodriguez wrote:

> On Thu, Nov 26, 2009 at 12:06:53AM -0800, Nick Lee - Unex wrote:
> > <--some incoherent deductions-->
> > no AR9xxx wifi card can support 10MHz bandwidth now.
>
> Let me clarify on your inaccurate deliberations. Harware-wise AR5416 can support
> 5 / 10 MHz channels, but this is not supported through software. The newer
> family of chipsets AR9280, AR2985, AR9287 all do not support 5 / 10 MHz channels
> either in harware or software. So it is fair to say ath9k will not support
> 5 MHz / 10 MHz channels.
>
>   Luis

Hello,

does that mean the AR9280 is not compliant with IEEE 802.11j as stated in the product bulletin (http://www.atheros.com/pt/bulletins/AR9280Bulletin.pdf)?

Will this be changed in further generations?

Robert

[ath9k-devel] 5 MHz and 10 MHz channel bandwidth available on any Atheros agn-Card?

[Luis R. Rodriguez]

On Tue, Dec 15, 2009 at 01:16:29AM -0800, Robert Budde wrote:
> On Mon, Dec 14, 2009 at 11:19:47AM -0800, Luis R. Rodriguez wrote:
> 
> > On Thu, Nov 26, 2009 at 12:06:53AM -0800, Nick Lee - Unex wrote:
> > > <--some incoherent deductions-->
> > > no AR9xxx wifi card can support 10MHz bandwidth now.
> >
> > Let me clarify on your inaccurate deliberations. Harware-wise AR5416 can support
> > 5 / 10 MHz channels, but this is not supported through software. The newer
> > family of chipsets AR9280, AR2985, AR9287 all do not support 5 / 10 MHz channels
> > either in harware or software. So it is fair to say ath9k will not support
> > 5 MHz / 10 MHz channels.
> >
> >   Luis
> 
> Hello,
> 
> does that mean the AR9280 is not compliant with IEEE 802.11j as stated
> in the product bulletin (http://www.atheros.com/pt/bulletins/AR9280Bulletin.pdf)?

802.11j seems to be acceptable with 20 MHz, and anyway I do not put out
marketing materials, I'm just a developer and figured the above would
be useful to other developers so they don't waste time trying to get
5 / 10 MHz working on ath9k as it will just not be supported.

  Luis

[ath9k-devel] 5 MHz and 10 MHz channel bandwidth available on any Atheros agn-Card?

[RHS Linux User]

Hi,

   So is the problem with 5/10 operation JUST in software?

   Is the hardware capable of 5/10 ?

   Thanks.


On Tue, 15 Dec 2009, Luis R. Rodriguez wrote:

> On Tue, Dec 15, 2009 at 01:16:29AM -0800, Robert Budde wrote:
> > On Mon, Dec 14, 2009 at 11:19:47AM -0800, Luis R. Rodriguez wrote:
> > 
> > > On Thu, Nov 26, 2009 at 12:06:53AM -0800, Nick Lee - Unex wrote:
> > > > <--some incoherent deductions-->
> > > > no AR9xxx wifi card can support 10MHz bandwidth now.
> > >
> > > Let me clarify on your inaccurate deliberations. Harware-wise AR5416 can support
> > > 5 / 10 MHz channels, but this is not supported through software. The newer
> > > family of chipsets AR9280, AR2985, AR9287 all do not support 5 / 10 MHz channels
> > > either in harware or software. So it is fair to say ath9k will not support
> > > 5 MHz / 10 MHz channels.
> > >
> > >   Luis
> > 
> > Hello,
> > 
> > does that mean the AR9280 is not compliant with IEEE 802.11j as stated
> > in the product bulletin (http://www.atheros.com/pt/bulletins/AR9280Bulletin.pdf)?
> 
> 802.11j seems to be acceptable with 20 MHz, and anyway I do not put out
> marketing materials, I'm just a developer and figured the above would
> be useful to other developers so they don't waste time trying to get
> 5 / 10 MHz working on ath9k as it will just not be supported.
> 
>   Luis
> _______________________________________________
> ath9k-devel mailing list
> ath9k-devel at lists.ath9k.org
> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
> 

[ath9k-devel] 5 MHz and 10 MHz channel bandwidth available on any Atheros agn-Card?

[Luis R. Rodriguez]

On Tue, Dec 15, 2009 at 4:49 PM, RHS Linux User <xxx@nei.mv.com> wrote:
>
> Hi,
>
> ? So is the problem with 5/10 operation JUST in software?

Its not a "problem", its by design that the hardware did not get all
the components to properly operate on 5 or 10 MHz. You can likely
*try* it but it just won't work well because of this. So because
hardware does not support it, software won't.

  Luis

[ath9k-devel] 5 MHz and 10 MHz channel bandwidth available on any Atheros agn-Card?

[Felix Fietkau]

On 2012-01-24 11:47 AM, Daniel Halperin wrote:
> Please don't top-post.
> 
> On Tue, Jan 24, 2012 at 12:31 AM, le thanh son <ltson36@yahoo.com> wrote:
>> Sorry for my late writing, since I have just read the following:
>>
>>>The newer
>>>family of chipsets AR9280, AR2985, AR9287 all do not support 5 / 10 MHz
>>> channels
>>>either in harware or software. So it is fair to say ath9k will not support
>>>5 MHz / 10 MHz channels.
>>
>> I am sure that I have been using for long time the family AR9280 chipset and
>> of course I can use 5/10 MHz bandwidth modes.
>>
>> But the driver needs to use HAL (not ATH9k) from Atheros.
>>
>> To my understanding, at least AR9280 supports 5/10Mhz BW.
> 
> It is true, at least some of the AR9xxx chipsets suport 5/10 MHz
> bandwidths. See, for instance,
> http://www.qca.qualcomm.com/technology/technology.php?nav1=47&product=90.
> 
> Getting support for this in Linux has to be pretty low on QualAth's
> list, though.
Most of the core driver support is in ath9k already, but there's no way
to enable it with the upstream driver yet. OpenWrt has patches to
support that, but since the functionality not integrated with mac80211 I
decided to not submit them upstream yet.

- Felix

[ath9k-devel] 5 MHz and 10 MHz channel bandwidth available on any Atheros agn-Card?

[Daniel Halperin]

Please don't top-post.

On Tue, Jan 24, 2012 at 12:31 AM, le thanh son <ltson36@yahoo.com> wrote:
> Sorry for my late writing, since I have just read the following:
>
>>The newer
>>family of chipsets AR9280, AR2985, AR9287 all do not support 5 / 10 MHz
>> channels
>>either in harware or software. So it is fair to say ath9k will not support
>>5 MHz / 10 MHz channels.
>
> I am sure that I have been using for long time the family AR9280 chipset and
> of course I can use 5/10 MHz bandwidth modes.
>
> But the driver needs to use HAL (not ATH9k) from Atheros.
>
> To my understanding, at least AR9280 supports 5/10Mhz BW.

It is true, at least some of the AR9xxx chipsets suport 5/10 MHz
bandwidths. See, for instance,
http://www.qca.qualcomm.com/technology/technology.php?nav1=47&product=90.

Getting support for this in Linux has to be pretty low on QualAth's
list, though.

Dan

[ath9k-devel] 5 MHz and 10 MHz channel bandwidth available on any Atheros agn-Card?

[le thanh son]

Sorry for my late writing, since I have just read the following:
>The newer
>family of chipsets AR9280, AR2985, AR9287 all do not support 5 / 10 MHz channels
>either in harware or software. So it is fair to say ath9k will not support
>5 MHz / 10 MHz channels.
I am sure that I have been using for long time the family AR9280 chipset and of course I can use 5/10 MHz bandwidth modes.
But the driver needs to use HAL (not ATH9k) from Atheros. 
To my understanding, at least AR9280 supports 5/10Mhz BW.
>Re: [ath9k-devel] 5 MHz and 10 MHz channel bandwidth available on any Atheros agn-Card?
>Luis R. Rodriguez
>Mon, 14 Dec 2009 11:19:47 -0800
>On Thu, Nov 26, 2009 at 12:06:53AM -0800, Nick Lee - Unex wrote:
>> <--some incoherent deductions-->
>> no AR9xxx wifi card can support 10MHz bandwidth now. >Let me clarify on your inaccurate deliberations. Harware-wise AR5416 can support
>5 / 10 MHz channels, but this is not supported through software. The newer
>family of chipsets AR9280, AR2985, AR9287 all do not support 5 / 10 MHz channels
>either in harware or software. So it is fair to say ath9k will not support
>5 MHz / 10 MHz channels. >  Luis
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[ath9k-devel] 5 MHz and 10 MHz channel bandwidth available on any Atheros agn-Card?

[Robert Budde]

Is there a Atheros AR9xxx based card which supports 10 MHz channel bandwidth
and center-frequencies around 5.9 GHz (for 802.11p). Using ath5k and an
AR5414-based card everything is fine, but I need to find some card supported
by ath9k as well.

 

Can somebody give me directions for what chipsets to look for?

 

Best regards,

Robert

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