Patent ID: 6999428

Claim:
A CDMA (Code Division Multiple Access) transmitter/receiver comprising: SIR (Signal-to-Interference Ratio) calculating means for calculating SIRs of a received signal slot by slot; and command generating means for generating a transmission power control command and a transmission power control-OFF command said transmission power control command being generated when the SIR decreases or increases from a reference value, said transmission power control command being a command that causes a station, which is sending the received signal, to lower or raise transmission power so as to restore the SIR toward the reference value, said transmission power control-OFF command for interrupting a transmission power control being generated when the SIR continuously decreases over a preselected number of slots; wherein said transmission power control-OFF command, if generated, is inserted in a radio frame to be sent to the station, otherwise said transmission power control command is inserted in said radio frame.