GSM POWER CONTROL

GSM Glossary

GSM — GSM Power Control

Information on Power Control

GSM defines five classes of mobile stations, according to their peak transmitter power, rated at 20, 8, 5, 2, and 0.8 W. To minimize co-channel interference and to conserve power, both the mobiles and the base transceiver station (BTS) operate at the lowest power level at which an acceptable signal quality can be maintained. Power levels can be stepped up or down in steps of 2 dB from the peak power for the class down to a minimum of 13 dBm (20 mW).
     Signal quality is measured by mobile and base station. The mobile station passes results of its measurements to the BSC, which is responsible for power control.

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