Bad host-vased AP performace -- and qouple of questions about FreeBSD WiFi stack tuning

[Adrian Chadd]

There's a dBm to mW chart.

Don't forget antenna gain.

Adrian

2011/8/9 Lev Serebryakov <lev at serebryakov.spb.ru>:
> Hello, Bernhard.
> You wrote 9 августа 2011 г., 10:29:18:
>
>>> (1) Hopping signal strength and total terrible WiFi network
>>>     performance -- is it broken hardware or something strange in
>>>     FreeBSD code?
>> Either the hardware really has some issues or the signal strength is
>> just too high? I've seen that.. can you try setting a lower txpower
>> for a test?
>  I'll try to reduce txpower, thanks.
>
>>> (2) Why card announce only 18Mbit, but not more?
>> Seems like you're looking at the "basic rates", if you examine the
>> beacon you should find another IE which contains all rates.
>  Oh, yep, Tag number = 50. It is strange enough, that different WiFi
>  analyzers shows only 18M for my network and 54M for others in such
>  case. It seems, here is another (more standard? more widely used by
>  hardware SOHO soapboxes?) way to specify additional rates.
>
>> at it might even in half-dbm. The iwn(4) cards for example have a
>> txpowerlimit of 15 dBm which is 30 in half-dBm.
>  How these dBm can be converted to mW? :) If it is "dBm" with 1W used
>  as base (30dBm), it means, that 15 dBm is only 32mW, that is 1/3 of
>  "standard" 100mW WiFi power.
>
> --
> // Black Lion AKA Lev Serebryakov <lev at serebryakov.spb.ru>
>
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