Roaming between 1232 Access Points


I am wondering how I can configure roaming between access points. I
3 1232AG APs set up with the same SSID details, when a user moves from
within range of 1 AP into the range of another the connection drops
until they are re-authenticted onto the new AP.

I have had a look at the Cisco WDS document, but it seems to suggest
that you need a WLSE environment.

Can I do what I want with the setup I have, SSID with WPA-PSK
authentication and encryption.