Patent ID: 7746826

Claim:
A method for wireless terminal dynamically switching window in a wireless LAN environment, wherein said wireless LAN includes several access points and a station which establishes connections with the access points by a way of wireless communication, said station can switch a current access window by scanning, comprising the following steps of: giving an initial value to a switch window by the station, wherein a switch window timer with a predetermined period is set in the station, and the timer will be started at a same time when the switch window is given the initial value by the station, wherein the step of giving an initial value to the switch window by the station comprises: storing a fixed maximum handoff threshold and a fixed minimum handoff threshold respectively in the station, and storing a fixed first and a fixed second switch window adjustment units (D 1 , D 2 ) respectively in each station; judging whether there is another access point whose signal quality is greater than that of the current access window through searching wireless channels by the station; wherein if there is such an access point whose signal quality is greater than that of the current access window, then further judging whether the station is in a frequent handoff status, wherein if the station is in the frequent handoff status, then a handoff judging result being not allowed to switch the window, wherein if the station is not in the frequent handoff status, then the handoff judging result being allowed to switch the window.