发明授权
US08098634B2 Method for performing a handover from a WCDMA system to a CDMA system in a multi-mode mobile communication terminal
有权
用于在多模式移动通信终端中执行从WCDMA系统到CDMA系统的切换的方法
- 专利标题: Method for performing a handover from a WCDMA system to a CDMA system in a multi-mode mobile communication terminal
- 专利标题(中): 用于在多模式移动通信终端中执行从WCDMA系统到CDMA系统的切换的方法
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申请号: US12724049申请日: 2010-03-15
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公开(公告)号: US08098634B2公开(公告)日: 2012-01-17
- 发明人: Woo-Sic Han , Jae-Hoon Kim
- 申请人: Woo-Sic Han , Jae-Hoon Kim
- 申请人地址: KR Seoul
- 专利权人: SKY Teletech Co., Ltd.
- 当前专利权人: SKY Teletech Co., Ltd.
- 当前专利权人地址: KR Seoul
- 代理机构: H.C. Park & Associates, PLC
- 优先权: KR2003-0079310 20031111; KR2003-0082925 20031121; KR2004-0066436 20040823
- 主分类号: H04B7/216
- IPC分类号: H04B7/216
摘要:
A method of performing a handover from a Wideband Code Division Multiple Access (WCDMA) system to a Code Division Multiple Access (CDMA) system in a multi-mode terminal having a WCDMA module and a CDMA module includes determining whether a handover to the CDMA system is necessary during a call through a WCDMA system; acquiring a pilot signal from the CDMA system by activating the CDMA module if it is determined that the handover to the CDMA system is necessary; receiving a sync signal if the pilot signal from the CDMA system is acquired; transmitting information for handover to the WCDMA system through the WCDMA module; allowing the CDMA module to enter a CDMA traffic state using handover information if the handover information is received from the WCDMA system through WCDMA module; and releasing a traffic state of the WCDMA module.
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