Apparatus and method for controlling power in mobile terminal having diversity receiver
AssigneeSamsung Electronics Co., Ltd.
InventorHak-Jea Sung
Life of this patent
Estimating the term…
Abstract
Disclosed is an apparatus for controlling a transmission (TX) power in a mobile terminal having at least two receive (RX) antennas. The apparatus includes a TX gain estimator for determining an AGC gain value corresponding to the estimated TX power; a compensation gain detector for determining a gain compensation value corresponding to the calculated difference; a closed-loop power controller for determining an up/down value of the TX power based on a power control bit received from a base station; and a TX gain determiner for determining a final AGC gain value.
Claims11
An apparatus for controlling a transmission (TX) power in a mobile terminal having at least two reception (RX) antennas, the apparatus comprising:
- a TX gain estimator for measuring a total power of RX signals received through the at least two RX antennas, estimating a TX power based on the measured total power, and determining an AGC gain value corresponding to the estimated TX power;
- a compensation gain detector for measuring a power of one of the RX signals, calculating a difference between the measured total power and the measured power of one of the RX signals, and determining a gain compensation value corresponding to the calculated difference;
- a closed-loop power controller for determining an up/down value of the TX power based on a power control bit received from a base station;
- and
- a TX gain determiner for determining a final AGC gain value using the determined AGC gain value, from the TX gain estimator, the determined gain compensation value from the compensation gain detector, and the determined up/down value from the closed loop power controller.
A method for controlling an initial transmission (TX) power in a mobile terminal having at least two reception (RX) antennas, the method comprising the steps of:
- measuring a total power of RX signals received through the at least two RX antennas and a power of one of the RX signals;
- calculating a difference between the measured total power and the measured power of one of RX antennas and determining a gain compensation value corresponding to the calculated difference;
- estimating a TX power based on the measured total power and determining an automatic gain control (AGC) gain value corresponding to the estimated TX power;
- and
- determining a final AGC gain value by using the determined AGC gain value and the determined gain compensation value.
A method for controlling a reverse link power in a mobile terminal having at least two reception (RX) antennas, the method comprising the steps of:
- measuring a total power of RX signals received through the at least two RX antennas and a power of one of the RX signals;
- calculating a difference between the measured total power and the measured power of one of the RX signals and obtaining a gain compensation value corresponding to the calculated difference and a transmission (TX) power up/down value according to a closed-loop power;
- estimating a TX power based on the measured total power and determining an automatic gain control (AGC) gain value corresponding to the estimated TX power;
- and
- determining a final AGC gain value by using the determined AGC gain value and the obtained gain compensation value.
Dependencies are inferred from the claim text.