Patent ID: 7010320

Claim:
A base station which uses uplink transmission power control commands transmitted from the base station via a downlink to control the uplink transmission power of a mobile station in such manner that the uplink receiving state at this base station becomes good: which is characterized by comprising: a receiver for receiving uplink radio signals that have been transmitted via the uplink; an uplink receiving state estimator for estimating the receiving state of the uplink from the received uplink signal; a mobile position recognizer for recognizing the present position of the mobile station from the received uplink signal; a mobile velocity recognizer for recognizing the present rate of movement of the mobile station from the received uplink signal; a mobile position predictor for predicting the future position of the mobile station from its present position and present rate of movement; a database in which the state of the uplink transmission path has been recorded as a function of mobile position; an uplink transmission power control command generator for looking up the database on the basis of the predicted future position of the mobile station, and for generating an uplink transmission power control command for controlling the uplink transmission power of the mobile station on the basis of (i) the future state of the uplink transmission path obtained as a result of the lookup, and (ii) the aforementioned estimated uplink receiving state; a mixer for outputting the mixed signal obtained by mixing the downlink data with the aforementioned generated uplink transmission power control command; and a transmitter for transmitting the mixed signal.