wifi bit rate

[JD]

On 05/21/2012 02:52 PM, Konstantin Svist wrote:
> On 05/21/2012 02:33 PM, JD wrote:
>> 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
>>
>>
>
> Hm, you're right - the quality is out of 70 and the rate is really 
> low.. here's mine:
> wlan0     IEEE 802.11abgn  ESSID:"Redacted"
>           Mode:Managed  Frequency:2.412 GHz  Access Point: 
> 00:14:D1:C4:4C:3F
>           Bit Rate=1 Mb/s   Tx-Power=14 dBm
>           Retry  long limit:7   RTS thr:off   Fragment thr:off
>           Power Management:off
>           Link Quality=62/70  Signal level=-48 dBm
>           Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
>           Tx excessive retries:1  Invalid misc:20   Missed beacon:0
>
> Maybe it's because I'm also connected over ethernet, so wifi is not 
> being used, so it's in powersaving mode of some kind..?
> See if your rate goes up/down if you're actively transferring a bunch 
> of data.
>
My rate remains constant at 18mb/s