Date: Thu, 8 Sep 2011 15:38:30 +0200 From: Berislav Purgar <bpurgar@gmail.com> To: Lev Serebryakov <lev@freebsd.org> Cc: freebsd-wireless@freebsd.org Subject: Re: AP performance (again): txpower regulation Message-ID: <CAAUsrB6LJ%2BmuTvaqHCySh6e9dMjzshohYFE4PQ3KTezZMZS2JA@mail.gmail.com> In-Reply-To: <4610390305.20110908154130@serebryakov.spb.ru> References: <663133681.20110907193747@serebryakov.spb.ru> <CAJ-Vmonai4LzwanLw7i5d-NyjN2b6GqfttjkdcROvOuEcuzEAw@mail.gmail.com> <437702009.20110907235248@serebryakov.spb.ru> <CAJ-Vmo=R-a%2BqhDLWj1n%2BBj70Pmg4WSL6bVZ6jwCUmNq=v7EBBw@mail.gmail.com> <426917282.20110908125907@serebryakov.spb.ru> <CAAUsrB5Qtokpcz-koUfYWCHrsnUUErQSAYHrXrW2F0Uvp3RzSA@mail.gmail.com> <4610390305.20110908154130@serebryakov.spb.ru>
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On Thu, Sep 8, 2011 at 1:41 PM, Lev Serebryakov <lev@freebsd.org> wrote: > Hello, Berislav. > You wrote 8 =D3=C5=CE=D4=D1=C2=D2=D1 2011 =C7., 13:14:38: > > > gateway# ifconfig wlan1 scan > SSID/MESH ID BSSID CHAN RATE S:N INT CAPS > House 54:e6:fc:c2:08:ca 1 54M -71:-96 100 EPS RSN WPA WM= E > HTCAP ATH WPS > gooodini 00:26:5a:ff:ee:e5 2 54M -87:-96 100 EPS RSN WPA WM= E > HTCAP ATH > default 00:1f:c6:3c:24:7a 6 54M -80:-96 100 E > 00:1e:58:2d:ea:67 3 54M -94:-96 100 EP RSN ATH > ZXL 00:19:cb:0a:71:bc 10 54M -96:-96 100 EP WPA > asus 20:cf:30:88:b5:90 1 54M -91:-96 100 EP WPA > Vlad 00:19:5b:e1:f1:aa 6 54M -89:-96 100 EPS > interzet@2 00:26:18:c6:81:98 1 54M -94:-96 100 EP HTCAP WPS > WPA WME > knyagna 00:18:e7:ec:1d:eb 3 54M -144:-96 100 EPS RSN WPA W= ME > HTCAP ATH WPS > > I notice one thing: in periods, when client was kicked from AP, it shows > much stronger signal (sbout -45 dB when -65 is average with associated > client). > > > i have AR5212 and it work great over 6m inside house (2 walls). > > transfer rate i get is 2.4~3.2MB/s > My previous card (500mW some strange Australian brand name, buyed on > eBay, AR5212 based) gives me comparable results, yes. But I've fried it = at > hot summer AND change apartment at almost same time AND upgrade FreeBSD f= rom > 7 to 8 on router (I didn't have much time to watch HD movies after > relocation, and didn't notice when situation becomes worse -- there was > period of time when WiFi bandwidth didn't bother me at all). So, I'm not > sure now, is it new card is crap or new apartment has "shielded" inner wa= lls > or FreeBSD8 has other power management. I've tried to build old FreeBSD 7 > image for router, but failed somehow -- kernel hangs on boot. I'll try mo= re > in near future. > > -- > // Black Lion AKA Lev Serebryakov <lev@serebryakov.spb.ru> > > i think that you have problem with interference from 802.11N based AP (i see 5 ht ap from scan). you can try changing channels (13,14 channel) and txpower (txpower 0-10) and see what happens. Beri
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