Method for determining threshold value for on/off...

Details Method for determining threshold value for on/off... Method for determining threshold value for on/off...

2008-05-06

2008-05-06

Feild, Joseph (Department: 2617)

Multiplex communications

Communication over free space

Signaling for performing battery saving

C455S522000, C370S252000, C370S332000, C370S342000, C370S329000, C370S341000, C370S318000

Reexamination Certificate

active

07369519

ABSTRACT:
A method for determining a threshold value for controlling output power of a mobile communication terminal in a W-CDMA system, includes: calculating a first value by dividing an average energy per a PN chip of downlink DPCCH by a total received power spectral density of downlink; calculating a second value by dividing the total received power spectral density of downlink by a white noise power spectral density; calculating a chip unit SIR by adding the first and second values; and determining a symbol unit threshold value for controlling ON/OFF of terminal output power by adding the chip unit SIR and a processing gain according to the number of chips per symbol. Accordingly, a symbol unit threshold value for controlling output power can be easily determined irrespective of a value of a data rate and a spreading factor.

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