[OpenWrt-Devel] Dissociate STA based on SNR

[Nishant Sharma]

Hi,

I was wondering if there is a way to dissociate STAs who say go below a 
minimum threshold SNR or signal level of say -65dBm in a multi-AP scenario?

As we do not run our OpenWRT APs with a WLAN controller, which can 
automatically change channels or increase/decrease the txpower, would it 
be a good idea to kick a STA off if it has low signal, so that it can be 
forced to associate with another AP.

Reason being, I have observed that there are a variety of STA cards 
which have their own algorithms built-in to consider the signal good 
enough or poor enough to try and find another AP with same SSID, which 
is beyond our control. Thus, STA hangs on to a poor SNR of say 17 but 
wouldn't switch to a better AP available affecting the user experience. 
As soon as I restart wifi on the AP, it goes to associate with another 
AP with better SNR.

I do not have a lot of experience with WiFi, but yes, I do have 
installed around 25 OpenWRT ath9k based APs in offices and warehouses 
and this is what I have observed and am writing in to seek ideas and 
suggestions from more experienced people.

Thanks in advance.

Regards,
Nishant
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