Wireless disconnect - session timeout

Hi everyone reading this, lately I started to have disconnections in some access points with a message in the log that I never seen before.

The log message is this: “XX:XX:XX:XX:XX:XX@wlan1 disconnected, session timeout”, being XX:XX:XX:XX:XX:XX the station that is getting disconnected.

This happens almost every day and not in all stations at the same time but randomly.

Before posting config and or discussing about the problem, I would like to see if someone knows about the log message "disconnected session timeout"because i was not able to find anything, not in this forum or other webs.

Thanks

I forget to say, the message is from the access point log.

The stations alternates between “lost connection, medium access timeout” and “lost connection, administrative disconnect”