looking for consultant

[hong zhang]

Eric,

If losing UDP packet, you need to find if link is disconnected or not.
In busy air, it is normal to see disassociate and re-associate with wpa_supplicant log. 

1. If link is connected, and UDP packet is lost. Then it may be a problem.
2. If UDP packet is lost during disassociated. Obviously, it is normal. 

I met a problem with LAN that switch firmware was problem to cause frequent disassociate and re-associate.

There is no strong evidence to say Tx power causing UDP lost.

---henry

--- On Tue, 12/4/12, Eric Diethorn <ejd at mhacoustics.com> wrote:

> From: Eric Diethorn <ejd at mhacoustics.com>
> Subject: Re: looking for consultant
> To: "hong zhang" <henryzhang62 at yahoo.com>, libertas-dev at lists.infradead.org
> Date: Tuesday, December 4, 2012, 3:14 PM
> Hi Hong,
> 
> Thanks for your comments. Yes, I think I understand your
> points/concerns.
> We are just trying to understand the factors affecting link
> quality in a
> UDP (non retransmission) application. The automatic RF power
> modulation
> scheme seems to under-power the radio a bit for our
> application. I would
> like to experiment with the constant TX power options to
> determine the
> effect of power on our issue. What I will do with the
> results of such
> experiments I do not yet know.
> 
> Do you have any experience in this aspect?
> 
> Eric
> 
> ---
> Eric Diethorn
> mh acoustics LLC
> 
> 
> 
> 
> 
> 
> On 12/4/12 2:58 PM, "hong zhang" <henryzhang62 at yahoo.com>
> wrote:
> 
> >Eric,
> >
> >Current Wifi Tx will be automatically adjusted for best
> signal with
> >distance between AP and device.
> >
> >If Tx power is changed, all those WiFi RF calibration,
> regulatory
> >settings, max power limits, band-edge reductions, rate
> to power settings,
> >and a lot of other WiFi configuration information may be
> impacted.
> >
> >---henry
> >
> >--- On Tue, 12/4/12, hong zhang <henryzhang62 at yahoo.com>
> wrote:
> >
> >> From: hong zhang <henryzhang62 at yahoo.com>
> >> Subject: Re: looking for consultant
> >> To: libertas-dev at lists.infradead.org,
> "Eric Diethorn"
> >><ejd at mhacoustics.com>
> >> Date: Tuesday, December 4, 2012, 1:23 PM
> >> Eric,
> >> 
> >> could you please explain what benefit you will get
> to change
> >> Tx power?
> >> 
> >> --henry
> >> 
> >> --- On Tue, 12/4/12, Eric Diethorn <ejd at mhacoustics.com>
> >> wrote:
> >> 
> >> > From: Eric Diethorn <ejd at mhacoustics.com>
> >> > Subject: Re: looking for consultant
> >> > To: "hong zhang" <henryzhang62 at yahoo.com>,
> >> libertas-dev at lists.infradead.org
> >> > Date: Tuesday, December 4, 2012, 10:59 AM
> >> > Hi Henry,
> >> > 
> >> > We were able to get firmware and some source
> from
> >> wi2wi, so
> >> > we have made
> >> > some progress. However, the code does not
> appear to be
> >> > compatible with
> >> > newer releases of linux.
> >> > 
> >> > Eric
> >> > 
> >> > ---
> >> > Eric Diethorn
> >> > mh acoustics LLC
> >> > 
> >> > 
> >> > 
> >> > 
> >> > 
> >> > 
> >> > On 12/3/12 2:01 PM, "hong zhang" <henryzhang62 at yahoo.com>
> >> > wrote:
> >> > 
> >> > >Eric,
> >> > >
> >> > >I do not think Marvell will provide source
> codes
> >> of
> >> > firmware.
> >> > >User should not be allowed to change TX
> power by
> >> law.
> >> > >
> >> > >
> >> > >---henry
> >> > >
> >> > >
> >> > >--- On Thu, 11/29/12, Eric Diethorn <ejd at mhacoustics.com>
> >> > wrote:
> >> > >
> >> > >> From: Eric Diethorn <ejd at mhacoustics.com>
> >> > >> Subject: looking for consultant
> >> > >> To: libertas-dev at lists.infradead.org
> >> > >> Date: Thursday, November 29, 2012,
> 7:56 PM
> >> > >> Hello libertas Community,
> >> > >> 
> >> > >> I am looking for a consultant who can
> assist
> >> us
> >> > with
> >> > >> modifications to the
> >> > >> liberates_sdio driver and firmware to
> provide
> >> RF
> >> > power
> >> > >> control and
> >> > >> monitoring. I'd like to use the tools
> iwconfig
> >> or
> >> > iw to
> >> > >> control transmit
> >> > >> power level (txpower), which does not
> seem to
> >> be
> >> > supported
> >> > >> at the moment
> >> > >> but once was, but I'd also like to
> consider
> >> > modifying the
> >> > >> adaptive power
> >> > >> control mechanism (auto). I am
> developing on
> >> the
> >> > Gumstix
> >> > >> Overo IronSTORM,
> >> > >> using linux 3.2 and the standard
> >> libertas_sdio
> >> > driver and
> >> > >> firmware for the
> >> > >> wi2wi module.
> >> > >> 
> >> > >> Thanks,
> >> > >> 
> >> > >> Eric Diethorn
> >> > >> ejd at mhacoustics.com
> >> > >> 
> >> > >> ---
> >> > >> Eric Diethorn
> >> > >> mh acoustics LLC
> >> > >> 
> >> > >> 
> >> > >> 
> >> > >>
> >> _______________________________________________
> >> > >> libertas-dev mailing list
> >> > >> libertas-dev at lists.infradead.org
> >> > >> http://lists.infradead.org/mailman/listinfo/libertas-dev
> >> > >> 
> >> > 
> >> > 
> >> > 
> >> >
> _______________________________________________
> >> > libertas-dev mailing list
> >> > libertas-dev at lists.infradead.org
> >> > http://lists.infradead.org/mailman/listinfo/libertas-dev
> >> > 
> >> 
> >> _______________________________________________
> >> libertas-dev mailing list
> >> libertas-dev at lists.infradead.org
> >> http://lists.infradead.org/mailman/listinfo/libertas-dev
> >> 
> 
> 
> 
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