Re (3): Percentage noted by network manager.
Darac & others,
From: Darac Marjal <mailinglist@darac.org.uk>
Date: Thu, 10 Jan 2013 16:14:59 +0000
> I was rather meaning how much the signal is attenuated between the
> sender and receiver.
My hypothesis. ...
For the receiver to know the attenuation from the tranmitter, the
header of each frame would have to contain a number representing the
transmitted power. Than assuming the receiver knows the received
power, it can calculate power attenuation. Of course, received power
is not necessarily received information. In
http://en.wikipedia.org/wiki/Ethernet_frame there is no mention of
transmitted power. I suppose it might be hidden in a lower layer
but probably this information and calculation just do not exist.
The header has a frame check sequence and retransmission of a corrupted
frame can occur. So the receiver can know how many bad copies
arrived before a good copy. That might be incorporated into the
signal quality calculation.
> However, doing a quick bit of searching suggests that the whole "link
> quality as a percentage" thing is more like voodoo: ...
That was my suspicion. Thanks for the references.
Regards, ... Peter E.
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