How does the Inter-Access Point Protocol (IAPP) enable roaming communications?

What will be an ideal response?

IAPP enables a mobile station to move from one cell to another without losing connection. IAPP encapsulates both the User Datagram Protocol (UDP) and IP for roaming communications. IAPP enables existing access points to be notified when a new access point is attached to a network, and it enables adjacent access points to share configuration information with one another. IAPP also enables an access point that has been communicating with a mobile station to automatically transfer information about the original connection (and any data waiting to be sent) to another access point when the mobile station moves from the cell of the first access point to the cell of the second access point.