| 摘要 |
PURPOSE: To reduce the power consumption of a mobile equipment and to extend the service life of a battery in the case of using a battery power supply by controlling the transmission power of each mobile equipment in accordance with the field strength and fading quantity of a received wave in each mobile equipment. CONSTITUTION: The field strength of a received wave is detected by a field strength detecting circuit 208 and the detected value is inputted to a representation value/ variation value calculating circuit 1. The circuit 1 finds out a representation value (y) and a variation valueσfor the field strength and applies the found values to a correction circuit 2, which finds out a representation value (z) to be corrected. The value (z) is encoded by an encoder 210 and transmitted to a base station 100. In the base station 100, information indicating the value (z) of a mobile equipment 200 is decoded and applied to a transmission power determining circuit 110, which determines transmission power corresponding to the value (z) and outputs mobile equipment transmission power controlling data to an encoder 1-12. When a receiver 206 receives the control data, the control data decoded by a decoder 214 are applied to a power control circuit 216 to control the output power of a transmitter 212.
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