[ath9k-devel] How to get CSI from Atheros Chipset

[ath9k-devel] How to get CSI from Atheros Chipset

[Zeyu Wang]

Dear all,

I'm a newer PhD student in HKUST and I read a paper which use the CSI
information to do the localization. In the paper, the authors use the
AR9390 chipset and modify the ath9k driver to get the CSI information.

Recently I searched on Google and found there are some emails talked about
the CSI in ath9k. Is there any way to get it by my own?

Thanks a lot!

Sincerely

Zeyu

HKUST
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[ath9k-devel] How to get CSI from Atheros Chipset

[Hemamali]

Zeyu Wang <uchihatmtkinu <at> gmail.com> writes:

> 
> Dear all,
> I'm a newer PhD student in HKUST and I read a paper which use the CSI 
information to do the localization. In the paper, the authors use the 
AR9390 chipset and modify the ath9k driver to get the CSI information.
> 
> Recently I searched on Google and found there are some emails talked 
about the CSI in ath9k. Is there any way to get it by my own??
> 
> Thanks a lot!
> 
> Sincerely
> 
> Zeyu
> 
> HKUST
> 
> 
> _______________________________________________
> ath9k-devel mailing list
> ath9k-devel <at> lists.ath9k.org
> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
> 

Dear Zeyu,
   Did you get answers to this query? Am also looking for similar 
requirement, if you got the way can you please pass that information.

Thanks much
-Hema

[ath9k-devel] How to get CSI from Atheros Chipset

[Adrian Chadd]

ugh, someone needs to come to the bay area and keep poking me until I
code it oup. :(


-a


On 13 August 2015 at 13:06, Hemamali <hemajnan@gmail.com> wrote:
> Zeyu Wang <uchihatmtkinu <at> gmail.com> writes:
>
>>
>> Dear all,
>> I'm a newer PhD student in HKUST and I read a paper which use the CSI
> information to do the localization. In the paper, the authors use the
> AR9390 chipset and modify the ath9k driver to get the CSI information.
>>
>> Recently I searched on Google and found there are some emails talked
> about the CSI in ath9k. Is there any way to get it by my own?
>>
>> Thanks a lot!
>>
>> Sincerely
>>
>> Zeyu
>>
>> HKUST
>>
>>
>> _______________________________________________
>> ath9k-devel mailing list
>> ath9k-devel <at> lists.ath9k.org
>> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>>
>
> Dear Zeyu,
>    Did you get answers to this query? Am also looking for similar
> requirement, if you got the way can you please pass that information.
>
> Thanks much
> -Hema
>
> _______________________________________________
> ath9k-devel mailing list
> ath9k-devel at lists.ath9k.org
> https://lists.ath9k.org/mailman/listinfo/ath9k-devel

[ath9k-devel] How to get CSI from Atheros Chipset

[Jesse Libertine]

I am nearby, I can harass you in person if it helps...
On Aug 13, 2015 6:20 PM, "Adrian Chadd" <adrian@freebsd.org> wrote:

> ugh, someone needs to come to the bay area and keep poking me until I
> code it oup. :(
>
>
> -a
>
>
> On 13 August 2015 at 13:06, Hemamali <hemajnan@gmail.com> wrote:
> > Zeyu Wang <uchihatmtkinu <at> gmail.com> writes:
> >
> >>
> >> Dear all,
> >> I'm a newer PhD student in HKUST and I read a paper which use the CSI
> > information to do the localization. In the paper, the authors use the
> > AR9390 chipset and modify the ath9k driver to get the CSI information.
> >>
> >> Recently I searched on Google and found there are some emails talked
> > about the CSI in ath9k. Is there any way to get it by my own?
> >>
> >> Thanks a lot!
> >>
> >> Sincerely
> >>
> >> Zeyu
> >>
> >> HKUST
> >>
> >>
> >> _______________________________________________
> >> ath9k-devel mailing list
> >> ath9k-devel <at> lists.ath9k.org
> >> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
> >>
> >
> > Dear Zeyu,
> >    Did you get answers to this query? Am also looking for similar
> > requirement, if you got the way can you please pass that information.
> >
> > Thanks much
> > -Hema
> >
> > _______________________________________________
> > ath9k-devel mailing list
> > ath9k-devel at lists.ath9k.org
> > https://lists.ath9k.org/mailman/listinfo/ath9k-devel
> _______________________________________________
> ath9k-devel mailing list
> ath9k-devel at lists.ath9k.org
> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>
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[ath9k-devel] How to get CSI from Atheros Chipset

[Hemamali G]

Guys,
       can somebody help me out on this!

On Fri, Aug 14, 2015 at 6:42 AM, Adrian Chadd <adrian@freebsd.org> wrote:

> ugh, someone needs to come to the bay area and keep poking me until I
> code it oup. :(
>
>
> -a
>
>
> On 13 August 2015 at 13:06, Hemamali <hemajnan@gmail.com> wrote:
> > Zeyu Wang <uchihatmtkinu <at> gmail.com> writes:
> >
> >>
> >> Dear all,
> >> I'm a newer PhD student in HKUST and I read a paper which use the CSI
> > information to do the localization. In the paper, the authors use the
> > AR9390 chipset and modify the ath9k driver to get the CSI information.
> >>
> >> Recently I searched on Google and found there are some emails talked
> > about the CSI in ath9k. Is there any way to get it by my own?
> >>
> >> Thanks a lot!
> >>
> >> Sincerely
> >>
> >> Zeyu
> >>
> >> HKUST
> >>
> >>
> >> _______________________________________________
> >> ath9k-devel mailing list
> >> ath9k-devel <at> lists.ath9k.org
> >> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
> >>
> >
> > Dear Zeyu,
> >    Did you get answers to this query? Am also looking for similar
> > requirement, if you got the way can you please pass that information.
> >
> > Thanks much
> > -Hema
> >
> > _______________________________________________
> > ath9k-devel mailing list
> > ath9k-devel at lists.ath9k.org
> > https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>
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[ath9k-devel] How to get CSI from Atheros Chipset

[Adrian Chadd]

ok, I've found a few pieces about this. What exactly are people after?


-a


On 22 August 2015 at 11:09, Hemamali G <hemajnan@gmail.com> wrote:
> Guys,
>        can somebody help me out on this!
>
>
> On Fri, Aug 14, 2015 at 6:42 AM, Adrian Chadd <adrian@freebsd.org> wrote:
>>
>> ugh, someone needs to come to the bay area and keep poking me until I
>> code it oup. :(
>>
>>
>> -a
>>
>>
>> On 13 August 2015 at 13:06, Hemamali <hemajnan@gmail.com> wrote:
>> > Zeyu Wang <uchihatmtkinu <at> gmail.com> writes:
>> >
>> >>
>> >> Dear all,
>> >> I'm a newer PhD student in HKUST and I read a paper which use the CSI
>> > information to do the localization. In the paper, the authors use the
>> > AR9390 chipset and modify the ath9k driver to get the CSI information.
>> >>
>> >> Recently I searched on Google and found there are some emails talked
>> > about the CSI in ath9k. Is there any way to get it by my own?
>> >>
>> >> Thanks a lot!
>> >>
>> >> Sincerely
>> >>
>> >> Zeyu
>> >>
>> >> HKUST
>> >>
>> >>
>> >> _______________________________________________
>> >> ath9k-devel mailing list
>> >> ath9k-devel <at> lists.ath9k.org
>> >> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>> >>
>> >
>> > Dear Zeyu,
>> >    Did you get answers to this query? Am also looking for similar
>> > requirement, if you got the way can you please pass that information.
>> >
>> > Thanks much
>> > -Hema
>> >
>> > _______________________________________________
>> > ath9k-devel mailing list
>> > ath9k-devel at lists.ath9k.org
>> > https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>
>

[ath9k-devel] How to get CSI from Atheros Chipset

[Vincent Schnitzbauer]

Hi Ardian,
I'm a student at Karlsruhe Institute of Technology in Germany.
Recently e.g. Wang et al. showed that it is possible achive pretty good
device-free human activity recognition with fine grained wifi information.
The phase information is an additional magnitude in which changes in the
signal are reflected.

Of course it is possible to use special hardware (e.g. atmel transceivers
or software radios) to get phase and amplitude information, but there is a
interest in using off-the-shelf communication hardware to extend its
purpose.

I'm currently working on this topic, utilizing off-the-shelf routers with
atheros chips for presence detection.

@Zeyu Wang, what are your plans  with CSI? If you wish you could give me a
short update by mailing me.

Best wishes.

2015-08-23 21:57 GMT+02:00 Adrian Chadd <adrian@freebsd.org>:

> ok, I've found a few pieces about this. What exactly are people after?
>
>
> -a
>
>
> On 22 August 2015 at 11:09, Hemamali G <hemajnan@gmail.com> wrote:
> > Guys,
> >        can somebody help me out on this!
> >
> >
> > On Fri, Aug 14, 2015 at 6:42 AM, Adrian Chadd <adrian@freebsd.org>
> wrote:
> >>
> >> ugh, someone needs to come to the bay area and keep poking me until I
> >> code it oup. :(
> >>
> >>
> >> -a
> >>
> >>
> >> On 13 August 2015 at 13:06, Hemamali <hemajnan@gmail.com> wrote:
> >> > Zeyu Wang <uchihatmtkinu <at> gmail.com> writes:
> >> >
> >> >>
> >> >> Dear all,
> >> >> I'm a newer PhD student in HKUST and I read a paper which use the CSI
> >> > information to do the localization. In the paper, the authors use the
> >> > AR9390 chipset and modify the ath9k driver to get the CSI information.
> >> >>
> >> >> Recently I searched on Google and found there are some emails talked
> >> > about the CSI in ath9k. Is there any way to get it by my own?
> >> >>
> >> >> Thanks a lot!
> >> >>
> >> >> Sincerely
> >> >>
> >> >> Zeyu
> >> >>
> >> >> HKUST
> >> >>
> >> >>
> >> >> _______________________________________________
> >> >> ath9k-devel mailing list
> >> >> ath9k-devel <at> lists.ath9k.org
> >> >> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
> >> >>
> >> >
> >> > Dear Zeyu,
> >> >    Did you get answers to this query? Am also looking for similar
> >> > requirement, if you got the way can you please pass that information.
> >> >
> >> > Thanks much
> >> > -Hema
> >> >
> >> > _______________________________________________
> >> > ath9k-devel mailing list
> >> > ath9k-devel at lists.ath9k.org
> >> > https://lists.ath9k.org/mailman/listinfo/ath9k-devel
> >
> >
> _______________________________________________
> ath9k-devel mailing list
> ath9k-devel at lists.ath9k.org
> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>
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[ath9k-devel] How to get CSI from Atheros Chipset

[Adrian Chadd]

So you're after IQ per per OFDM, right?



-a


On 23 August 2015 at 13:13, Vincent Schnitzbauer <vinschni@gmail.com> wrote:
> Hi Ardian,
> I'm a student at Karlsruhe Institute of Technology in Germany.
> Recently e.g. Wang et al. showed that it is possible achive pretty good
> device-free human activity recognition with fine grained wifi information.
> The phase information is an additional magnitude in which changes in the
> signal are reflected.
>
> Of course it is possible to use special hardware (e.g. atmel transceivers or
> software radios) to get phase and amplitude information, but there is a
> interest in using off-the-shelf communication hardware to extend its
> purpose.
>
> I'm currently working on this topic, utilizing off-the-shelf routers with
> atheros chips for presence detection.
>
> @Zeyu Wang, what are your plans  with CSI? If you wish you could give me a
> short update by mailing me.
>
> Best wishes.
>
> 2015-08-23 21:57 GMT+02:00 Adrian Chadd <adrian@freebsd.org>:
>>
>> ok, I've found a few pieces about this. What exactly are people after?
>>
>>
>> -a
>>
>>
>> On 22 August 2015 at 11:09, Hemamali G <hemajnan@gmail.com> wrote:
>> > Guys,
>> >        can somebody help me out on this!
>> >
>> >
>> > On Fri, Aug 14, 2015 at 6:42 AM, Adrian Chadd <adrian@freebsd.org>
>> > wrote:
>> >>
>> >> ugh, someone needs to come to the bay area and keep poking me until I
>> >> code it oup. :(
>> >>
>> >>
>> >> -a
>> >>
>> >>
>> >> On 13 August 2015 at 13:06, Hemamali <hemajnan@gmail.com> wrote:
>> >> > Zeyu Wang <uchihatmtkinu <at> gmail.com> writes:
>> >> >
>> >> >>
>> >> >> Dear all,
>> >> >> I'm a newer PhD student in HKUST and I read a paper which use the
>> >> >> CSI
>> >> > information to do the localization. In the paper, the authors use the
>> >> > AR9390 chipset and modify the ath9k driver to get the CSI
>> >> > information.
>> >> >>
>> >> >> Recently I searched on Google and found there are some emails talked
>> >> > about the CSI in ath9k. Is there any way to get it by my own?
>> >> >>
>> >> >> Thanks a lot!
>> >> >>
>> >> >> Sincerely
>> >> >>
>> >> >> Zeyu
>> >> >>
>> >> >> HKUST
>> >> >>
>> >> >>
>> >> >> _______________________________________________
>> >> >> ath9k-devel mailing list
>> >> >> ath9k-devel <at> lists.ath9k.org
>> >> >> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>> >> >>
>> >> >
>> >> > Dear Zeyu,
>> >> >    Did you get answers to this query? Am also looking for similar
>> >> > requirement, if you got the way can you please pass that information.
>> >> >
>> >> > Thanks much
>> >> > -Hema
>> >> >
>> >> > _______________________________________________
>> >> > ath9k-devel mailing list
>> >> > ath9k-devel at lists.ath9k.org
>> >> > https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>> >
>> >
>> _______________________________________________
>> ath9k-devel mailing list
>> ath9k-devel at lists.ath9k.org
>> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>
>

[ath9k-devel] How to get CSI from Atheros Chipset

[Hemamali G]

Hi Adrian,
       We are looking for Physical layer CSI (channel state information)
extraction from ath9k/ath10k driver on latest Atheros WiFi chipsets. since
we know that Hw has the readable support of estimated channel FFT buffer
for a given packet.

Hope this is clear to you
Cheers
-Hema

On Mon, Aug 24, 2015 at 1:27 AM, Adrian Chadd <adrian@freebsd.org> wrote:

> ok, I've found a few pieces about this. What exactly are people after?
>
>
> -a
>
>
> On 22 August 2015 at 11:09, Hemamali G <hemajnan@gmail.com> wrote:
> > Guys,
> >        can somebody help me out on this!
> >
> >
> > On Fri, Aug 14, 2015 at 6:42 AM, Adrian Chadd <adrian@freebsd.org>
> wrote:
> >>
> >> ugh, someone needs to come to the bay area and keep poking me until I
> >> code it oup. :(
> >>
> >>
> >> -a
> >>
> >>
> >> On 13 August 2015 at 13:06, Hemamali <hemajnan@gmail.com> wrote:
> >> > Zeyu Wang <uchihatmtkinu <at> gmail.com> writes:
> >> >
> >> >>
> >> >> Dear all,
> >> >> I'm a newer PhD student in HKUST and I read a paper which use the CSI
> >> > information to do the localization. In the paper, the authors use the
> >> > AR9390 chipset and modify the ath9k driver to get the CSI information.
> >> >>
> >> >> Recently I searched on Google and found there are some emails talked
> >> > about the CSI in ath9k. Is there any way to get it by my own?
> >> >>
> >> >> Thanks a lot!
> >> >>
> >> >> Sincerely
> >> >>
> >> >> Zeyu
> >> >>
> >> >> HKUST
> >> >>
> >> >>
> >> >> _______________________________________________
> >> >> ath9k-devel mailing list
> >> >> ath9k-devel <at> lists.ath9k.org
> >> >> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
> >> >>
> >> >
> >> > Dear Zeyu,
> >> >    Did you get answers to this query? Am also looking for similar
> >> > requirement, if you got the way can you please pass that information.
> >> >
> >> > Thanks much
> >> > -Hema
> >> >
> >> > _______________________________________________
> >> > ath9k-devel mailing list
> >> > ath9k-devel at lists.ath9k.org
> >> > https://lists.ath9k.org/mailman/listinfo/ath9k-devel
> >
> >
>
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[ath9k-devel] How to get CSI from Atheros Chipset

[Vincent Schnitzbauer]

Hi Hema,
did you already look into
https://wireless.wiki.kernel.org/en/users/drivers/ath9k/spectral_scan  ?

Greetings,
Vincent

2015-08-24 11:29 GMT+02:00 Hemamali G <hemajnan@gmail.com>:

> Hi Adrian,
>        We are looking for Physical layer CSI (channel state information)
> extraction from ath9k/ath10k driver on latest Atheros WiFi chipsets. since
> we know that Hw has the readable support of estimated channel FFT buffer
> for a given packet.
>
> Hope this is clear to you
> Cheers
> -Hema
>
>
> On Mon, Aug 24, 2015 at 1:27 AM, Adrian Chadd <adrian@freebsd.org> wrote:
>
>> ok, I've found a few pieces about this. What exactly are people after?
>>
>>
>> -a
>>
>>
>> On 22 August 2015 at 11:09, Hemamali G <hemajnan@gmail.com> wrote:
>> > Guys,
>> >        can somebody help me out on this!
>> >
>> >
>> > On Fri, Aug 14, 2015 at 6:42 AM, Adrian Chadd <adrian@freebsd.org>
>> wrote:
>> >>
>> >> ugh, someone needs to come to the bay area and keep poking me until I
>> >> code it oup. :(
>> >>
>> >>
>> >> -a
>> >>
>> >>
>> >> On 13 August 2015 at 13:06, Hemamali <hemajnan@gmail.com> wrote:
>> >> > Zeyu Wang <uchihatmtkinu <at> gmail.com> writes:
>> >> >
>> >> >>
>> >> >> Dear all,
>> >> >> I'm a newer PhD student in HKUST and I read a paper which use the
>> CSI
>> >> > information to do the localization. In the paper, the authors use the
>> >> > AR9390 chipset and modify the ath9k driver to get the CSI
>> information.
>> >> >>
>> >> >> Recently I searched on Google and found there are some emails talked
>> >> > about the CSI in ath9k. Is there any way to get it by my own?
>> >> >>
>> >> >> Thanks a lot!
>> >> >>
>> >> >> Sincerely
>> >> >>
>> >> >> Zeyu
>> >> >>
>> >> >> HKUST
>> >> >>
>> >> >>
>> >> >> _______________________________________________
>> >> >> ath9k-devel mailing list
>> >> >> ath9k-devel <at> lists.ath9k.org
>> >> >> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>> >> >>
>> >> >
>> >> > Dear Zeyu,
>> >> >    Did you get answers to this query? Am also looking for similar
>> >> > requirement, if you got the way can you please pass that information.
>> >> >
>> >> > Thanks much
>> >> > -Hema
>> >> >
>> >> > _______________________________________________
>> >> > ath9k-devel mailing list
>> >> > ath9k-devel at lists.ath9k.org
>> >> > https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>> >
>> >
>>
>
>
> _______________________________________________
> ath9k-devel mailing list
> ath9k-devel at lists.ath9k.org
> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>
>
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[ath9k-devel] How to get CSI from Atheros Chipset

[Hemamali G]

Hi Vincent,
     Yes, i looked at this, but i am looking for more details on Hw
register programming, and also getting the time stamping information. More
over am looking for this kind of support for latest atheros 11ac chips on
Ath10k driver.

Cheers,
-Hema

On Mon, Aug 24, 2015 at 3:21 PM, Vincent Schnitzbauer <vinschni@gmail.com>
wrote:

> Hi Hema,
> did you already look into
> https://wireless.wiki.kernel.org/en/users/drivers/ath9k/spectral_scan  ?
>
> Greetings,
> Vincent
>
> 2015-08-24 11:29 GMT+02:00 Hemamali G <hemajnan@gmail.com>:
>
>> Hi Adrian,
>>        We are looking for Physical layer CSI (channel state information)
>> extraction from ath9k/ath10k driver on latest Atheros WiFi chipsets. since
>> we know that Hw has the readable support of estimated channel FFT buffer
>> for a given packet.
>>
>> Hope this is clear to you
>> Cheers
>> -Hema
>>
>>
>> On Mon, Aug 24, 2015 at 1:27 AM, Adrian Chadd <adrian@freebsd.org> wrote:
>>
>>> ok, I've found a few pieces about this. What exactly are people after?
>>>
>>>
>>> -a
>>>
>>>
>>> On 22 August 2015 at 11:09, Hemamali G <hemajnan@gmail.com> wrote:
>>> > Guys,
>>> >        can somebody help me out on this!
>>> >
>>> >
>>> > On Fri, Aug 14, 2015 at 6:42 AM, Adrian Chadd <adrian@freebsd.org>
>>> wrote:
>>> >>
>>> >> ugh, someone needs to come to the bay area and keep poking me until I
>>> >> code it oup. :(
>>> >>
>>> >>
>>> >> -a
>>> >>
>>> >>
>>> >> On 13 August 2015 at 13:06, Hemamali <hemajnan@gmail.com> wrote:
>>> >> > Zeyu Wang <uchihatmtkinu <at> gmail.com> writes:
>>> >> >
>>> >> >>
>>> >> >> Dear all,
>>> >> >> I'm a newer PhD student in HKUST and I read a paper which use the
>>> CSI
>>> >> > information to do the localization. In the paper, the authors use
>>> the
>>> >> > AR9390 chipset and modify the ath9k driver to get the CSI
>>> information.
>>> >> >>
>>> >> >> Recently I searched on Google and found there are some emails
>>> talked
>>> >> > about the CSI in ath9k. Is there any way to get it by my own?
>>> >> >>
>>> >> >> Thanks a lot!
>>> >> >>
>>> >> >> Sincerely
>>> >> >>
>>> >> >> Zeyu
>>> >> >>
>>> >> >> HKUST
>>> >> >>
>>> >> >>
>>> >> >> _______________________________________________
>>> >> >> ath9k-devel mailing list
>>> >> >> ath9k-devel <at> lists.ath9k.org
>>> >> >> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>>> >> >>
>>> >> >
>>> >> > Dear Zeyu,
>>> >> >    Did you get answers to this query? Am also looking for similar
>>> >> > requirement, if you got the way can you please pass that
>>> information.
>>> >> >
>>> >> > Thanks much
>>> >> > -Hema
>>> >> >
>>> >> > _______________________________________________
>>> >> > ath9k-devel mailing list
>>> >> > ath9k-devel at lists.ath9k.org
>>> >> > https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>>> >
>>> >
>>>
>>
>>
>> _______________________________________________
>> ath9k-devel mailing list
>> ath9k-devel at lists.ath9k.org
>> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>>
>>
>
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[ath9k-devel] How to get CSI from Atheros Chipset

[Till Wollenberg]

Hi!

* On 23.08.2015 at 21:57 Adrian Chadd wrote:
> [Getting CSI]
> ok, I've found a few pieces about this. What exactly are people after?

SNR per OFDM sub-carrier for a recevied frame would be *very* interesting to me.


Best
Till

[ath9k-devel] How to get CSI from Atheros Chipset

[Adrian Chadd]

ok,

So the legacy bits include |I| and |Q| but it's not per-frame, it's
set-once-and-get-next-frame. You then read bins from the NIC itself in
some shared memory inside said NIC. I'll go see if this works on the
earlier chips and try to get this published, at least so there's
something to start with.

I think AR9380 and later support what you saw in that paper - where
you request that you get CSI data as part of some receive frame. I
/think/ it's part of the TxBF support. I'll have to double-check if
that's okay to extract and publish.



-adrian



On 24 August 2015 at 08:14, Till Wollenberg
<till.wollenberg@uni-rostock.de> wrote:
> Hi!
>
> * On 23.08.2015 at 21:57 Adrian Chadd wrote:
>> [Getting CSI]
>> ok, I've found a few pieces about this. What exactly are people after?
>
> SNR per OFDM sub-carrier for a recevied frame would be *very* interesting to me.
>
>
> Best
> Till
>
> _______________________________________________
> ath9k-devel mailing list
> ath9k-devel at lists.ath9k.org
> https://lists.ath9k.org/mailman/listinfo/ath9k-devel

[ath9k-devel] How to get CSI from Atheros Chipset

[Brandon Enochs]

The OFDM subcarrier information per frame from the AR9380 would be very
useful.

On Tue, Aug 25, 2015, 6:00 AM  <ath9k-devel-request@lists.ath9k.org> wrote:

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> Today's Topics:
>
>    1. Re: How to get CSI from Atheros Chipset (Till Wollenberg)
>    2. Re: How to get CSI from Atheros Chipset (Adrian Chadd)
>    3. ath CountryCode enum is missing a few entries. (Ben Greear)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 24 Aug 2015 17:14:04 +0200
> From: Till Wollenberg <till.wollenberg@uni-rostock.de>
> Subject: Re: [ath9k-devel] How to get CSI from Atheros Chipset
> To: <ath9k-devel@lists.ath9k.org>
> Message-ID: <55DB34BC.5010301@uni-rostock.de>
> Content-Type: text/plain; charset="windows-1252"; format=flowed
>
> Hi!
>
> * On 23.08.2015 at 21:57 Adrian Chadd wrote:
> > [Getting CSI]
> > ok, I've found a few pieces about this. What exactly are people after?
>
> SNR per OFDM sub-carrier for a recevied frame would be *very* interesting
> to me.
>
>
> Best
> Till
>
>
>
> ------------------------------
>
> Message: 2
> Date: Mon, 24 Aug 2015 09:40:41 -0700
> From: Adrian Chadd <adrian@freebsd.org>
> Subject: Re: [ath9k-devel] How to get CSI from Atheros Chipset
> To: Till Wollenberg <till.wollenberg@uni-rostock.de>
> Cc: ath9k-devel <ath9k-devel@lists.ath9k.org>
> Message-ID:
>         <CAJ-Vmo=GWYFMnLg=-
> hRwe7iEPjs5qcTYJn9YaDXX-R0uVSQHxw at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> ok,
>
> So the legacy bits include |I| and |Q| but it's not per-frame, it's
> set-once-and-get-next-frame. You then read bins from the NIC itself in
> some shared memory inside said NIC. I'll go see if this works on the
> earlier chips and try to get this published, at least so there's
> something to start with.
>
> I think AR9380 and later support what you saw in that paper - where
> you request that you get CSI data as part of some receive frame. I
> /think/ it's part of the TxBF support. I'll have to double-check if
> that's okay to extract and publish.
>
>
>
> -adrian
>
>
>
> On 24 August 2015 at 08:14, Till Wollenberg
> <till.wollenberg@uni-rostock.de> wrote:
> > Hi!
> >
> > * On 23.08.2015 at 21:57 Adrian Chadd wrote:
> >> [Getting CSI]
> >> ok, I've found a few pieces about this. What exactly are people after?
> >
> > SNR per OFDM sub-carrier for a recevied frame would be *very*
> interesting to me.
> >
> >
> > Best
> > Till
> >
> > _______________________________________________
> > ath9k-devel mailing list
> > ath9k-devel at lists.ath9k.org
> > https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>
>
> ------------------------------
>
> Message: 3
> Date: Mon, 24 Aug 2015 15:50:55 -0700
> From: Ben Greear <greearb@candelatech.com>
> Subject: [ath9k-devel] ath CountryCode enum is missing a few entries.
> To: "ath9k-devel at lists.ath9k.org" <ath9k-devel@venema.h4ckr.net>
> Message-ID: <55DB9FCF.2020408@candelatech.com>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> We wrote a script to try all country codes, and we notice that
> with some codes, the driver will fail to load.  (We have added
> a patch to ath9k to allow over-riding the country-code for testing
> purposes.)
>
> For instance, Afghanistan (4) is missing.
>
> Should these be added?
>
> Thanks,
> Ben
>
> --
> Ben Greear <greearb@candelatech.com>
> Candela Technologies Inc  http://www.candelatech.com
>
>
>
> ------------------------------
>
> _______________________________________________
> ath9k-devel mailing list
> ath9k-devel at lists.ath9k.org
> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>
>
> End of ath9k-devel Digest, Vol 86, Issue 13
> *******************************************
>
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[ath9k-devel] How to get CSI from Atheros Chipset

[Till Wollenberg]

Hi Adrian,

* On 24.08.2015 18:40 Adrian Chadd wrote:
> On 24 August 2015 at 08:14, Till Wollenberg <till.wollenberg@uni-rostock.de> wrote:
>> * On 23.08.2015 at 21:57 Adrian Chadd wrote:
>>> [Getting CSI]
>>> ok, I've found a few pieces about this. What exactly are people after?
>>
>> SNR per OFDM sub-carrier for a recevied frame would be *very* interesting to me.

> ok,
>
> So the legacy bits include |I| and |Q| but it's not per-frame, it's
> set-once-and-get-next-frame. You then read bins from the NIC itself in
> some shared memory inside said NIC. I'll go see if this works on the
> earlier chips and try to get this published, at least so there's
> something to start with.

Sounds interesting. So is this per-frame information if the internal registers 
are read out right after receiving a frame, or is it always an aggregate over 
several received frames?

> I think AR9380 and later support what you saw in that paper - where
> you request that you get CSI data as part of some receive frame. I
> /think/ it's part of the TxBF support. I'll have to double-check if
> that's okay to extract and publish.

I'm not the OP so I'm not quite sure what the paper is about. Nevertheless, I 
plan to use AR9590 and/or AR9390 cards so I guess that these meet the criterion 
of "AR9380 and later".

Best
Till.

[ath9k-devel] How to get CSI from Atheros Chipset

[Hemamali G]

Hi Guys,
    Any help on this from any body?

Thx

On 24 August 2015 at 15:27, Hemamali G <hemajnan@gmail.com> wrote:

> Hi Vincent,
>      Yes, i looked at this, but i am looking for more details on Hw
> register programming, and also getting the time stamping information. More
> over am looking for this kind of support for latest atheros 11ac chips on
> Ath10k driver.
>
> Cheers,
> -Hema
>
>
> On Mon, Aug 24, 2015 at 3:21 PM, Vincent Schnitzbauer <vinschni@gmail.com>
> wrote:
>
>> Hi Hema,
>> did you already look into
>> https://wireless.wiki.kernel.org/en/users/drivers/ath9k/spectral_scan  ?
>>
>> Greetings,
>> Vincent
>>
>> 2015-08-24 11:29 GMT+02:00 Hemamali G <hemajnan@gmail.com>:
>>
>>> Hi Adrian,
>>>        We are looking for Physical layer CSI (channel state information)
>>> extraction from ath9k/ath10k driver on latest Atheros WiFi chipsets. since
>>> we know that Hw has the readable support of estimated channel FFT buffer
>>> for a given packet.
>>>
>>> Hope this is clear to you
>>> Cheers
>>> -Hema
>>>
>>>
>>> On Mon, Aug 24, 2015 at 1:27 AM, Adrian Chadd <adrian@freebsd.org>
>>> wrote:
>>>
>>>> ok, I've found a few pieces about this. What exactly are people after?
>>>>
>>>>
>>>> -a
>>>>
>>>>
>>>> On 22 August 2015 at 11:09, Hemamali G <hemajnan@gmail.com> wrote:
>>>> > Guys,
>>>> >        can somebody help me out on this!
>>>> >
>>>> >
>>>> > On Fri, Aug 14, 2015 at 6:42 AM, Adrian Chadd <adrian@freebsd.org>
>>>> wrote:
>>>> >>
>>>> >> ugh, someone needs to come to the bay area and keep poking me until I
>>>> >> code it oup. :(
>>>> >>
>>>> >>
>>>> >> -a
>>>> >>
>>>> >>
>>>> >> On 13 August 2015 at 13:06, Hemamali <hemajnan@gmail.com> wrote:
>>>> >> > Zeyu Wang <uchihatmtkinu <at> gmail.com> writes:
>>>> >> >
>>>> >> >>
>>>> >> >> Dear all,
>>>> >> >> I'm a newer PhD student in HKUST and I read a paper which use the
>>>> CSI
>>>> >> > information to do the localization. In the paper, the authors use
>>>> the
>>>> >> > AR9390 chipset and modify the ath9k driver to get the CSI
>>>> information.
>>>> >> >>
>>>> >> >> Recently I searched on Google and found there are some emails
>>>> talked
>>>> >> > about the CSI in ath9k. Is there any way to get it by my own?
>>>> >> >>
>>>> >> >> Thanks a lot!
>>>> >> >>
>>>> >> >> Sincerely
>>>> >> >>
>>>> >> >> Zeyu
>>>> >> >>
>>>> >> >> HKUST
>>>> >> >>
>>>> >> >>
>>>> >> >> _______________________________________________
>>>> >> >> ath9k-devel mailing list
>>>> >> >> ath9k-devel <at> lists.ath9k.org
>>>> >> >> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>>>> >> >>
>>>> >> >
>>>> >> > Dear Zeyu,
>>>> >> >    Did you get answers to this query? Am also looking for similar
>>>> >> > requirement, if you got the way can you please pass that
>>>> information.
>>>> >> >
>>>> >> > Thanks much
>>>> >> > -Hema
>>>> >> >
>>>> >> > _______________________________________________
>>>> >> > ath9k-devel mailing list
>>>> >> > ath9k-devel at lists.ath9k.org
>>>> >> > https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>>>> >
>>>> >
>>>>
>>>
>>>
>>> _______________________________________________
>>> ath9k-devel mailing list
>>> ath9k-devel at lists.ath9k.org
>>> https://lists.ath9k.org/mailman/listinfo/ath9k-devel
>>>
>>>
>>
>
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