Telecommunications – Transmitter and receiver at separate stations – With control signal
Reexamination Certificate
2005-09-27
2005-09-27
Gary, Erika A. (Department: 2681)
Telecommunications
Transmitter and receiver at separate stations
With control signal
C455S522000, C370S335000
Reexamination Certificate
active
06950632
ABSTRACT:
A device and method for continuous outer-loop power control on a physical channel which transmits only power control bits and no data while in discontinuous transmission (DTX) mode in a CDMA mobile communication system is disclosed. In the power controlling device according to one aspect of the present invention, a frame error detector detects an error from a frame of predetermined length and generates an error signal indicating whether an error has been generated. A closed-loop power controller compares a threshold with the signal-to-noise ratio (SNR) in each power control group (PCG) in a plurality of periods of the frame and generates power control information according to the comparison result. An outer-loop power controller increases the threshold in order to generate power control information that commands a power increase in response to an error signal indicating the existence of a frame error, and decreases the threshold in order to generate power control information that commands a power decrease in response to an error signal indicating the absence of a frame error. An offset controlling unit, which is connected to the outer-loop power controller, receives gating information about the gated transmission of data in a frame at a predetermined rate, and generates an offset signal, which indicates an offset corresponding to a changed gating rate if the gating rate is changed.
REFERENCES:
patent: 5842113 (1998-11-01), Nanda et al.
patent: 6075974 (2000-06-01), Saints et al.
patent: 6373823 (2002-04-01), Chen et al.
patent: 6545989 (2003-04-01), Butler
patent: 6643272 (2003-11-01), Moon et al.
Maeng Seung-Joo
Yoon Soon-Young
Yun Yu-Suk
Dilworth & Barrese LLP
Gary Erika A.
Samsung Electronics Co,. Ltd.
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