Patent ID: 8000298

Claim:
A fast roaming system comprising at least one mobile terminal and at least two access points, wherein the at least one mobile terminal, while communicating over a wireless LAN with an access point of the at least two access points, serving as a parent station, can be quickly switched from the parent station to an adjacent access point of the at least two access points having an overlapping communication range; wherein each of the at least two access points comprises: a wireless LAN interface for communicating with the mobile terminal over the wireless LAN, a roaming unit for performing a roaming operation, a beacon transmitter for transmitting a beacon signal to provide synchronization with the mobile terminal, and a data transmitter for transmitting, to the mobile terminal, access point data required for the roaming operation; and wherein the mobile terminal comprises: a wireless LAN interface for communicating with an access point over the wireless LAN, an access point search unit for searching for peripheral connectable access points and for obtaining access point data, a roaming execution unit for transferring the connection of the mobile terminal from a currently connected access point to another, designated access point, an access point data table in which the access point data detected and obtained by the access point search unit are recorded, and a function controller for, when a condition for communicating with the currently connected access point matches a predetermined roaming operation start condition, employing a predetermined order sequence to select one of the access points entered into the access point data table, and for driving the roaming unit to perform the roaming operation for the access point that is selected.