US 6,675,000 B1 · Radio communication apparatus and transmission power control method therein

Abstract

A radio communication apparatus is provided with a first variable power amplifier 13 and a second variable power amplifier 14 in a radio transmission unit 22, and also a variable amplifier 16 is provided at a prestage of a modulation unit 15. A transmission power control bit is extracted from a reception signal sent from a communication counter station by a variable power amplifying-controlling unit 18. The variable power amplifying-controlling unit 18 updates a value of transmission power stored in an own station based upon the value of this extracted transmission power control bit, and also compares the updated transmission value with a predetermined threshold value. Based upon this comparison result, the first and second variable power amplifier 13 and 14, and the variable amplifier 16 are controlled in either a serial control manner or a parallel control manner so as to perform a variable power amplification, so that the own transmission power is adjusted.

Claims18

Dependent claims

A radio communication apparatus having a transmission power control function capable of controlling transmission power to a communication counter station, comprising:

a plurality of variable power amplifying means for amplifying transmission power;
and
variable power amplifying-controlling means for controlling said plurality of variable power amplifying means, said variable power amplifier means having:
a serial control manner of controlling said plurality of variable power amplifying means;
and
a parallel control manner of controlling said plurality of variable power amplifying means;
wherein said controlling is over an entire control range to thereby perform a variable amplifying-controlling operation.

4 more elements

A transmission power control method used in a radio communication apparatus, for controlling transmission power to a communication station, comprising:

a variable power amplifying-controlling step for controlling a plurality of variable power amplifying means over an entire control range, said variable power amplifying step having a serial manner of performing a variable amplifying-controlling operation;
and
a parallel manner of performing the variable amplifying-controlling operation.

Dependencies are inferred from the claim text.

Radio communication apparatus and transmission power control method therein

Life of this patent

Radio communication apparatus and transmission power control method therein

Life of this patent

Abstract

Claims18