Patent ID: 6144860
Filing Date: 2000-11-07
Classification: H04W

Abstract:
A transmission power control system suitable in use for a mobile communications system, in which communications between a base station and a mobile station are performed through a many-valued encoding operation in which codes are represented with symbols, said base station acting as a transmission station or a remote call station, said mobile station acting as a remote call station or a transmission station, said base station having a transmitter and a receiver and said mobile station having a transmitter and a receiver, comprising:CIR calculating means disposed in said transmission station, for calculating a CIR by subtracting an interference signal level from a desired signal level of a transmission signal, wherein said desired signal level is obtained based on an average power of inverse-modulated pilot symbols each obtained by inverse-modulating a pilot symbol with a theoretical value of said pilot symbol, and wherein said interference signal level is obtained based on a distribution of inverse-modulated pilot symbols each obtained by inverse-modulating a pilot symbol with a theoretical value of said pilot symbol,transmission power indicating means disposed in said transmission station, for transmitting an indication for transmission power control according to the CIR of said transmission signal from said remote call station, andtransmission power adjusting means disposed in said remote call station, for varying transmission power according to the indication for transmission power control from said transmission station.