On a particular place in the building we had a very low throughput on channel 1. We use the 802.11G band.
Using a sectrum analyzer we found in the middle of channel 1 a non 802.11 compliant device transmitting on a very high duty cycle. This explained our problem.
The frequency band used by the device was very narrow (a spike in the middle of channel 1) , signal strength was around -84db ( noise level -80db)
Config is a 4404 Wireless Lan Controller and 1130 access points.
Question: Are there parameters in the WLC available to tweak this behavior, to prevent a relatively weak signal to monopolize the band.
A parameter like: a threshold on RSSI, it should be better than value X to make the channel marked as busy.
Or is everything tight up into the 802.11 MAC en PHY specs?
I was searching for these values but unable to find. The only point where CCA was mentioned was in a Picocell environment