Patent ID: 8103277

Claim:
A handover method from a WCDMA (wideband code division multiple access) network to a CDMA (code division multiple access) network in a system comprising a mobile communication terminal, a RNC (radio network controller) of the WCDMA network and a BSC (base station controller) of the CDMA network, the handover method comprising: in the RNC, transmitting a measurement control message for commanding cell power measurement on a WCDMA cell and a WCDMA beacon cell installed in a Base Transceiver Station of a CDMA cell to the mobile communication terminal; in the mobile communication terminal, transmitting a measurement report message to the RNC after measurement of the cell power level on the WCDMA cell and the WCDMA beacon cell; determining a cell power level of the CDMA cell to have a same power level as the measured cell power level of the WCDMA beacon cell; and in the RNC, determining a handover into the CDMA cell when there is no more receivable WCDMA cell depending on the measurement report message, wherein the WCDMA beacon cell transmits a signal at the same cell power level as that of the CDMA cell.