Patent ID: 7885679

Claim:
A mobile communication terminal comprising: a first unit which measures a SIR of a signal received from a base station; a second unit which determines a target SIR; and a third unit which compares said SIR measured by said first unit to said target SIR, and produces TPC data in accordance with the result of the comparison, said TPC data controlling signal-transmission power by which said base station transmits a signal to said mobile communication terminal, said TPC data being transmitted to said base station together with a signal to be transmitted to said base station from said mobile communication terminal, wherein said second unit lowers said target SIR when communication quality between said mobile communication terminal and said base station is determined to be equal to or greater than threshold quality, and wherein said communication quality is a quality of communication in a predetermined time period during which a signal for calling is not received by said mobile communication terminal from said base station.