Title: Method and system for hand-over from wideband code division multiple access network to code division multiple access network by using dummy pilot signal
Application Number: 200480033228 Application Date: 2004.11.15
Publication Number: 1879324 Publication Date: 2006.12.13
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H04B7/26
Applicant(s) Name: SK Telecom Co., Ltd. Address:
Inventor(s) Name: Kim Younglak, Shin Sungho
Attorney & Agent: zhu jingui
Abstract:
     Disclosed are a method and a system for handover from a WCDMA network to a CDMA-2000 network by using a dummy pilot signal. The method comprises the steps of: a) a multimode terminal receiving a WCDMA signal level measurement message, turning on a CDMA-2000 modem mounted on the multimode terminal and transmitting a level value of the dummy pilot signal to a WCDMA system, when detecting the dummy pilot signal above a specific level from the WCDMA signal level measurement message; b) the WCDMA system determining whether to perform a handover or not based on the level value of the dummy pilot signal; c) the WCDMA system transmitting a handover request message to a CDMA-2000 system when it is determined to perform the handover; d) transmitting a handover command message from the WCDMA system to the multimode terminal; and e) allowing traffic to be switched to the CDMA-2000 modem of the multimode terminal.
Time: 6
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