| 摘要 |
<p>A transmission power control method and device in a mobile communication system. The reception quality of signals (31, 32a, 32b, 41, or 42) transmitted from another mobile station (51 or 52) or a base station (21 or 22) is compared with a predetermined control desired value such as the ratio of signal to interference power, and the comparison result is used for controlling the transmission power to the other end. When a frame error is detected in the transmitted signals, the control desired value is increased by SIRinc. When no frame error is detected, the control desired value is decreased by SIRdec, and SIRdec is made the product of the desired value of the frame error rate and SIRinc. Thus, when the propagation environment or the speed of a multi-path changes, the control desired value of the transmission power control can be changed in a short time to maintain the line quality constant, thereby realizing a desired line quality.</p> |
