Signal Strength
Radio signals drop in power over a distance. Even if all the settings are correct, a low signal
strength makes association impossible. The usable distance between the AP and client can
range from a few meters indoor to 200m outdoors maximum. When setting up the AP, make sure
that you:
Keep the distance from the AP to the clients as short as possible.
Make sure that the WLAN signals do not have to pass through too many concrete walls
and metal structures to reach the client.
Make sure that APs are located far away from one another to avoid interference.
Interference
Interference happens when 2 APs with the same channels are placed near to one another. The
speed of the network drops and the signal strength fluctuates wildly.
Roaming
Association happens when the SSID, Encryption and MAC Address Control settings are correct
between the AP and client. If 2 APs with these same settings are located in the same area, the
client would choose to associate to the one which gives it a better signal strength. The client
would roam over to the 2nd AP when he moves nearer to it. The client switches AP and
frequency as he does so.
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