Where is the wifi signal source in each room in the hotel?

The hotel adopts the method of separating AC (access controller) and AP (wireless access point). One AC corresponds to multiple APs.

That is to say, multiple AP access points are placed on each floor of the hotel to ensure that the signal in each room is very good, but there is only one controller AC. The ordinary router we use at home is a combination of AC and AP. together, so the location of the router determines the signal coverage.