Mobile satellite communication system

摘要

A transmission power control method in a mobile satellite communication system implementing accurate control of transmission power of a base station by obtaining an average received signal level at a mobile station at high accuracy. The mobile station measures an average received signal level Qk in a predetermined period (step SP2), and informs the base station of the average received signal level Qk and an actual measuring time Tk (step SP3). The base station calculates a total measuring time tk which is the sum total of the actual measuring time Tk (step SP16), a corrected average received signal level Rk associated with the average received signal level during the total measuring time tk (step SP18), and a measuring error DELTA Dk (step SP17), and controls the transmission power on the basis of these values (step SP21). Estimating the measuring error DELTA Dk in the total measuring time tk longer than the individual actual measuring time Tk makes it possible to reduce the measuring error, thereby implementing highly accurate transmission power control.