Relationship between Link quality and signal level
david.goodenough at btconnect.com
Fri Dec 8 09:34:03 EST 2006
Why would I get:-
Link Quality:0/92 Signal level:-69 dBm Noise level:-90 dBm
from iwconfig? Normally the link quality first number is roughly the
difference between the signal level and the noise level, but here is
The other end of this link reports a more healthy link quality:-
Link Quality:30/92 Signal level:-79 dBm Noise level:-100 dBm
but (I presume because the first one says 0) the current rate is 1Mb/s
This link is running ad-hoc, these are the only two stations on this
network, and neither end can detect (using iwlist scan) any other users
on this channel. There is a clear line of site, and there are virtually
no buildings in between to generate any non-802.11 interference.
Both ends are using Senao PCMCIA 802.11b cards, prism chipset, both
at 1.8.0 firmware.
Any ideas welcome.
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