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9000 is offline 9000
2011-02-11 , 03:51
Posts: 1,425 | Thanked: 983 times | Joined on May 2010 @ Hong Kong
#11
Originally Posted by Tommy1402 View Post
here the output
Code:
wlan0     IEEE 802.11bg  ESSID:"OFFICE_WIFI"  
          Mode:Managed  Frequency:2.462 GHz  Access Point: 00:90:4C:91:00:01   
          Bit Rate=12 Mb/s   Tx-Power=20 dBm   
          Retry min limit:7   RTS thr:off   Fragment thr=2352 B   
          Encryption key:C48F-A1F9-F5A9-7AD4-D04F-484B-BA33-ADCF-9104-25AE-DB8A-E8DE-5D3F-E531-4A87-57DD [2]   Security mode:open
          Power Management:off
          Link Quality=35/100  Signal level:-72 dBm  Noise level=-98 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

phonet0   no wireless extensions.
Try increase the txpower from 21 gradually.

Code:
iwconfig wlan0 txpower 21
I don't know the channel maximum but normally it'd warning you with 'Operation not permitted' if you set it too high. For your reference, some home/office routers has at least 35 dBm.

Some older phone would set the txpower so high so as to ensure link stability at the expense of battery life, as the manufacturers don't expect users having a very long WiFi usage with their phones. N900 has really chosen quite a low txpower setting.
 
Tommy1402 is offline Tommy1402
2011-02-11 , 04:57
Posts: 6 | Thanked: 0 times | Joined on Jan 2011
#12
Originally Posted by 9000 View Post
Try increase the txpower from 21 gradually.

Code:
iwconfig wlan0 txpower 21
I don't know the channel maximum but normally it'd warning you with 'Operation not permitted' if you set it too high. For your reference, some home/office routers has at least 35 dBm.

Some older phone would set the txpower so high so as to ensure link stability at the expense of battery life, as the manufacturers don't expect users having a very long WiFi usage with their phones. N900 has really chosen quite a low txpower setting.
so, each time I connect, I should increate txpower to 35 ?
 
9000 is offline 9000
2011-02-11 , 06:40
Posts: 1,425 | Thanked: 983 times | Joined on May 2010 @ Hong Kong
#13
Sorry I got it wrong with your question. In your case you might want to check with the admin whether the power-saving in the router is enable. I found that if it does, the connection would be dropped even when you turn off N900's power-saving.
 
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