SYSTEM AND A METHOD FOR PERFORMING HANDOVER BETWEEN HETEROGENEOUS NETWORKS, CAPABLE OF MAKING AN MS RECEIVE A PACKET DATA WITHOUT DISCONNECTION EVEN THOUGH THE MS PERFORMS HANDOVER BETWEEN HETEROGENEOUS NETWORKS

摘要

PURPOSE: A system and a method for performing handover between heterogeneous networks are provided to perform handover into a TD-SCDMA(Time-Division Synchronous CDMA) network through GTP tunneling without a change of an IP address assigned from a WiMAX(Worldwide Interoperability for Microwave Access) network.;CONSTITUTION: An SGSN transmits a create PDP context request message based on BSID(Base Station ID) information of a WiMAX network. A GGSN(Gateway GPRS Support Node)(160) requests GTP(GPRS Tunneling Protocol) tunneling to an ASN gateway based on the BSID(Base Station ID) information of the WiMAX network. The GGSN receives the packet data from the ASN gateway through a GTP tunnel. The GGSN provides the packet data to the MS positioned in a TD-SCDMA network through the SGSN.;COPYRIGHT KIPO 2010