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on 01/21/04 04:39, Benjamin Krein wrote:
> Anyone good at coding that can patch the Gnome applet to work off of
> signal strength instead?
> On Tue, 2004-01-20 at 16:48, Martin Whitaker wrote:
>>The Gnome wireless applet bases its "signal strength" display on the
>>link quality (not on the signal strength!). The display is expressed as
>>a percentage, calculated by
>> percentage = 100 * log(link_quality) / log(92)
>>(clipped to the range 0 to 100)
>>Unfortunately, using the Centrino driver, the link quality is always zero.
which one is the /correct/ one? I mean, which (the 'link quality' or the
'signal strength') should be an indicator of your network connection?
Because if the right one is the 'signal strength', IMHO the patch should
be addressed to the GNOME Wireless Link Monitor, while on the contrary
the patch should be against the NDISwrapper.
Here the definition from 'man iwconfig':
- - Link quality
Overall quality of the link. May be based on the level of con-
tention or interference, the bit or frame error rate, how good
the received signal is, some timing synchronisation, or other
hardware metric. This is an aggregate value, and depends totally
on the driver and hardware.
- Signal level
Received signal strength (RSSI - how strong the received signal
is). May be arbitrary units or dBm, iwconfig uses driver meta
information to interpret the raw value given by /proc/net/wire-
less and display the proper unit or maximum value (using 8 bit
arithmetic). In Ad-Hoc mode, this may be undefined and you
should use iwspy.
IMHO, as the name of the GNOME Wireless *Link* Monitor suggest, it's
correct for it to read the 'link quality': if I have a good signal but
I'm not linked with the AP, there're no reasons the GNOME WiFi shows
blue ligth. On the contrary, bad signal and linked to an AP, well, the
blue ligth should be on.
If I missed something, please someone correct me.
Gismo / Luca
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