Power levels / HostAP documentation

Jean Tourrilhes jt
Thu Oct 30 11:12:08 PST 2003

On Thu, Oct 30, 2003 at 01:47:11PM -0500, Henry Qian wrote:
> Jean,
> What is the definition of Link Quality?  I have read Link Quality in
> man page of iwconfig, still don't get its exactly meaning.  If I am
> implementing a driver, how do I present this number?  Since it
> usually takes the form of x/y, does -y represent a noise floor?  Or
> it's a free expression for wifi driver to decide whatever number it
> likes to use, so different cards might have different meaning?

	Yes, it's a totally fuzzy number, and that's the beauty of it.
	If you talk about weather, you can usually say :
		Weather : good - fair - average - crap
		Temperature : 25C - 10C - 0C
	Signal strenght is like temperature, it has a precise physical
definition agreed on by everybody. Link Quality is like weather
quality, everyone has it's own scale.
	So, just decide what you think is most useful, and stick it in

> Thanks,
> Henry


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