Invention Grant
US07657278B2 Method and apparatus for deriving a combined transmit power control command during handover
失效
用于在切换期间导出组合的发射功率控制命令的方法和装置
- Patent Title: Method and apparatus for deriving a combined transmit power control command during handover
- Patent Title (中): 用于在切换期间导出组合的发射功率控制命令的方法和装置
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Application No.: US11234629Application Date: 2005-09-23
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Publication No.: US07657278B2Publication Date: 2010-02-02
- Inventor: Chang-Soo Koo , Donald M. Grieco , Jaeyoung Kwak
- Applicant: Chang-Soo Koo , Donald M. Grieco , Jaeyoung Kwak
- Applicant Address: US DE Wilmington
- Assignee: InterDigital Technology Corporation
- Current Assignee: InterDigital Technology Corporation
- Current Assignee Address: US DE Wilmington
- Agency: Volpe and Koenig, P.C.
- Main IPC: H04W52/24
- IPC: H04W52/24 ; H04W52/40
Abstract:
A method and apparatus for deriving a combined transmit power control (TPC) command during handover are disclosed. During handover, a combined TPC command is generated from two or more TPC commands. The combined TPC command is set to −1 for decrease of the transmit power if a soft symbol of the TPC signal from any cell indicates decrease of the transmit power and the signal-to-interference ratio for the cell is greater than a reliability threshold. Otherwise, the combined TPC command is set to −1 if the function γ is not greater than the combining threshold, and set to +1 if the function γ is greater than the combining threshold, where the function γ represents a log-likelihood ratio of a probability density function of the combined TPC command.
Public/Granted literature
- US20070026885A1 Method and apparatus for deriving a combined transmit power control command during handover Public/Granted day:2007-02-01
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