HANDOVER METHOD BETWEEN HETEROGENEOUS WIRELESS NETWORKS THROUGH PRE-AUTHENTICATION WHICH GUARANTEES SEAMLESS MOBILITY BETWEEN HETEROGENEOUS WIRELESS COMMUNICATIONS NETWORK BY REDUCING TIME FOR AUTHENTICATION PROCEDURE DURING A HANDOVER PROCESS

摘要

PURPOSE: A handover method is provided to reduce hand-over delay time by reducing time for authentication after accessing to a heterogeneous system during a handover process.;CONSTITUTION: A terminal receives the information of a target authenticators of a second communications network, capable of executing handover from one among source authenticators(303). The terminal generates an authentication key with the execution of pre-authentication with one among the target authenticators(304~309). When the authentication key stored in one among the target authenticators matches the authentication key in a handover request, the terminal is connected to the second network through one among the target authenticators(310~317).;COPYRIGHT KIPO 2010