wifi bit rate

[JD]

On 05/21/2012 01:34 PM, Konstantin Svist wrote:
> On 05/21/2012 01:18 PM, JD wrote:
>> Any wifi protocol savvy people who can explain this:
>>
>> iwconfig wlan0
>> wlan0     IEEE 802.11bgn  ESSID:"Private"
>>           Mode:Managed  Frequency:2.452 GHz  Access Point: 
>> 00:AA:BB:CC:DD:EE
>>           Bit Rate=18 Mb/s   Tx-Power=27 dBm
>>           Retry  long limit:7   RTS thr=2346 B   Fragment thr=2346 B
>>           Power Management:off
>>           Link Quality=70/70  Signal level=-36 dBm
>>           Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
>>           Tx excessive retries:0  Invalid misc:25   Missed beacon:0
>>
>> The access point is a 54G wifi gateway and router.
>>
>> My wifi card is the Atheros AR5008 which is an 802.11n card.
>>
>> How could the bit rate be restricted to 18Mb/s??
>> Is this a problem with the ath9k driver or the wext driver?
>> PS: I did not have the issue until installing FC16. This
>> problem was absent in FC14.
>>
>
> I thought wifi adjusts the data rate on the fly based on how strong 
> the signal is. Try moving the laptop closer to the router, at least 
> just to see if the rate goes up...
>
No difference!!
Stuck at 18mb/s

By the way: I changed wifi interface on my machine to an rtl8187
and still iwconfig reports  18mb/s, with full signal quality at 70/70 !!!

# iwconfig wlan1
wlan1     IEEE 802.11bg  ESSID:"Private"
           Mode:Managed  Frequency:2.452 GHz  Access Point: 
00:AA:BB:CC:DD:EE
           Bit Rate=18 Mb/s   Tx-Power=20 dBm
           Retry  long limit:7   RTS thr=2346 B   Fragment thr=2346 B
           Power Management:off
           Link Quality=70/70  Signal level=-25 dBm
           Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
           Tx excessive retries:0  Invalid misc:21   Missed beacon:0