Date: Thu, 8 Sep 2011 12:02:28 +0800 From: Adrian Chadd <adrian@freebsd.org> To: Lev Serebryakov <lev@freebsd.org> Cc: freebsd-wireless@freebsd.org Subject: Re: AP performance (again): txpower regulation Message-ID: <CAJ-Vmo=R-a%2BqhDLWj1n%2BBj70Pmg4WSL6bVZ6jwCUmNq=v7EBBw@mail.gmail.com> In-Reply-To: <437702009.20110907235248@serebryakov.spb.ru> References: <663133681.20110907193747@serebryakov.spb.ru> <CAJ-Vmonai4LzwanLw7i5d-NyjN2b6GqfttjkdcROvOuEcuzEAw@mail.gmail.com> <437702009.20110907235248@serebryakov.spb.ru>
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2011/9/8 Lev Serebryakov <lev@freebsd.org>: > gateway# ./athpoke 0x9934 0x9938 0x993c 0xa234 0xa238 > 0x9934 =3D 1e1e1e1e > 0x9938 =3D 1c1e1e1e > 0x993c =3D 0000003f > 0xa234 =3D 1e1e1e1e > 0xa238 =3D 1e1e1e1e > gateway# ifconfig wlan0 txpower 1 > gateway# ./athpoke 0x9934 0x9938 0x993c 0xa234 0xa238 > 0x9934 =3D 02020202 > 0x9938 =3D 02020202 > 0x993c =3D 0000003f > 0xa234 =3D 02020202 > 0xa238 =3D 02020202 > gateway# ifconfig wlan0 txpower 30 > gateway# ./athpoke 0x9934 0x9938 0x993c 0xa234 0xa238 > 0x9934 =3D 24242424 > 0x9938 =3D 1c1e2024 > 0x993c =3D 0000003f > 0xa234 =3D 26262426 > 0xa238 =3D 26262626 These look fine, but I don't have as much experience with the ar5212 series stuff as I do with the AR5416+ series stuff. > =A0It seems, registers are Ok. But clients don't see any difference! > Maybe, it is because my Senao card is "powerful" one, with additional > schematic (and power supply) to boost signal? Hm. Well, how far away are they? You can do a bit of math to see what changes the TX power on the sender side would have on the receiver signal level. Have you ever looked at doing up a free space loss model to predict what the signal level(s) should be? Adrian
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