For example:
Station (on wlan0-1) Using tp-link wr841nd at 20dbm using 15dbi omni
exterior antenna.
inactive time: 150 ms
rx bytes: 35544259
rx packets: 393968
tx bytes: 7492114
tx packets: 52821
tx retries: 10926
tx failed: 1
signal: -51 [-51] dBm
signal avg: -50 [-50] dBm
tx bitrate: 108.0 MBit/s MCS 5 40Mhz
rx bitrate: 1.0 MBit/s
authorized: yes
authenticated: yes
preamble: long
WMM/WME: yes
MFP: no
TDLS peer: no
client with dir-601a at 16dbm with 8 dbi antenna.
CP window size: 20.5 KByte (default)
------------------------------------------------------------
[ 3] local 10.0.0.27 port 41869 connected with x.x.x.x port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.1 sec 11.0 MBytes 9.15 Mbits/sec
Both APs have clean line of sight to each other and their distance is 68
meters apart.
This data was obtained from the dlink.
The tp-link has 2 antennas. 1 remains the original. The other is now the
15dbi.
option diversity 0
On 02/21/2013 05:20 PM, Ben West wrote:
> My understanding is that the reported bit rates are dependent not just
> on signal quality but also the quantity of traffic passing through each
> side at a given interval. So, if the RX chain isn't pulling in as much
> as traffic as the TX chain is sending out, then its rate will get scaled
> down.
>
> Can you verify the asymmetric Rx/TX throughput reported by iw using
> iperf or even with wget?
>
> On Wed, Feb 20, 2013 at 8:39 PM, HeXiLeD <[email protected]
> <mailto:[email protected]>> wrote:
>
> I have a few routers that i have been using in a adhoc mesh network that
> have been presenting some results that i would like to understand
> better.
>
> Some of these routers had only one antenna; others had 2. they all got
> modified ro be able to use external omni directional antennas.
>
> The routers with just 2 antennas kept one original antenna and the other
> was upgraded to the external.
>
> Right now are showing some values that have made me questioning which
> antenna is actually being used.
>
> iw dev wlan0-1 station dump
>
> Station (on wlan0-1)
> inactive time: 140 ms
> rx bytes: 5916030
> rx packets: 84079
> tx bytes: 6406980
> tx packets: 51827
> tx retries: 59838
> tx failed: 2130
> signal: -77 [-80, -79] dBm
> signal avg: -76 [-79, -78] dBm
> tx bitrate: 19.5 MBit/s MCS 2
> rx bitrate: 1.0 MBit/s
> authorized: yes
> authenticated: yes
> preamble: long
> WMM/WME: yes
> MFP: no
> TDLS peer: no
>
> In all these models of the 2 antenna routers i get the TX value always
> higher than the RX and the RX at 1 mbit.
>
> /etc/config/wireless
>
> config wifi-device radio0
> option type mac80211
> option channel 11
> option phy phy0
> option hwmode 11ng
> option country US
> option noscan 1
> option diversity 0
> option htmode HT40-
> list ht_capab SHORT-GI-40
> list ht_capab TX-STBC
> list ht_capab RX-STBC1
> list ht_capab DSSS_CCK-40
> option beacon_int 1000
> option txpower 20
> option disabled 0
> option distance 2000
>
> Since i have option diversity 0 and no specification for which antenna
> the router should use and in this case it should use the right side
> antenna; could this be the cause of very low values for rx bitrate.
>
> How can i improve or solve this situation ?
>
> Also in the case of 3 antenna routers such as the t-plink wr1043nd which
> has 3 antennas; how does one selects the middle antenna ?
>
>
> _______________________________________________
> openwrt-users mailing list
> [email protected] <mailto:[email protected]>
> https://lists.openwrt.org/mailman/listinfo/openwrt-users
>
>
>
>
> --
> Ben West
> http://gowasabi.net
> [email protected] <mailto:[email protected]>
> 314-246-9434
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