Patent ID: 6556839
Filing Date: 2003-04-29
Classification: H04W

Abstract:
An apparatus for controlling a transmission power, comprising:an antenna which receives a plurality of reception signals from a plurality of mobile stations; a plurality of processors which processes said plurality of reception signals from said antenna to determine reception powers, respectively; and a total reception power calculator which calculates a total reception power based on said reception power outputted from each of said plurality of processors; wherein each of said plurality of processors includes: a reversely spreading unit which spreads said reception signal received by said antenna by using an assigned spreading code; a reception power measuring unit which calculates said reception power based on the reversely spread reception signal outputted from said reversely spreading unit; an SIR calculator which calculates a signal to interference ratio (SIR) of said reception signal based on said reception power calculated by said reception power measuring unit and said total reception power calculated by said total reception power calculator; a transmission power control information calculator which calculates transmission power control information to make said SIR outputted from said SIR calculator equal to a predetermined SIR; and a transmission section which transmits said transmission power control information calculated in said transmission power control information calculator to one of said plurality of mobile stations.