Patent ID: 7328018

Claim:
A handover method in a wireless LAN environment, comprising: a) scanning beacon signals transmitted from neighboring access routers to a mobile node; b) predicting only one new access router (NAR) based on the beacon scanning results; c) obtaining information on the predicted NAR before an L2 trigger of a link layer occurs; and d) carrying out binding update using the information on the predicted NAR when the L2 trigger of the link layer occurs, wherein step b), further includes the steps of: determining whether among the scanned beacon signals, there is a beacon signal whose intensity continues to increase and whether a ratio of the intensity of the corresponding beacon signal to the intensity of a beacon signal transmitted from a current access router exceeds a predetermined value, then predicting an access router that has transmitted the corresponding beacon signal as the NAR, and predicting the current access router to be a previous access router (PAR).