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An apparatus for adaptive-power control of a spread-spectrum transmitter of a mobile station operating in a cellular-communications network using spread-spectrum modulation. A base station transmits a first spread-spectrum signal. A mobile station has an automatic-gain-control circuit for generating

An apparatus for adaptive-power control of a spread-spectrum transmitter of a mobile station operating in a cellular-communications network using spread-spectrum modulation. A base station transmits a first spread-spectrum signal. A mobile station has an automatic-gain-control circuit for generating an AGC-output signal, from a received signal. The received signal includes the first spread-spectrum signal and an interfering signal. The mobile station also has a correlator for despreading the AGC-output signal, a power-measurement circuit responsive to processing the received signal with the despread AGC-output signal for generating a received-power level, a comparator coupled to the power-measurement circuit for generating a comparison signal by comparing the received-power level to a threshold level, a transmitter for transmitting a second spread-spectrum signal, an antenna, and a variable-gain device responsive to the comparison signal for adjusting a transmitter-power level of the second spread-spectrum signal.

대표청구항 ▼

A method for adaptive-power control of a plurality of spread-spectrum transmitters of a plurality of mobile stations, respectively, operating in a cellular-communications network using spread-spectrum modulation, each of said plurality of mobile stations having a transmitter, wherein a base station

A method for adaptive-power control of a plurality of spread-spectrum transmitters of a plurality of mobile stations, respectively, operating in a cellular-communications network using spread-spectrum modulation, each of said plurality of mobile stations having a transmitter, wherein a base station transmits a generic spread-spectrum signal, comprising: transmitting from said base station, on at least one of a continuous basis and a repetitive periodic basis, an adaptive-power control information signal comprising a digital power-level-referencing word having at least three bits, said word corresponding to a threshold having at least eight levels for a transmitter-power level of a mobile station; acquiring the generic spread-spectrum signal and the adaptive-power control information signal at said mobile station; decoding the adaptive-power control information signal as the threshold for the transmitter-power level of said mobile station; detecting a received power level of the generic spread-spectrum signal at said mobile station; generating, at said mobile station, a comparison signal by comparing the received power level to said threshold; adjusting the transmitter-power level of said mobile station transmitter in response to said comparison signal; and transmitting, from said mobile station, a spread-spectrum signal with the mobile station transmitter.