초록 ▼

A method for controlling transmission power of a radio transmitter in a cellular communications system, such as in a CDMA-system, which includes determining a reference value (SIR.sub.m) indicating the quality of the signals received from the radiotransmitter, determining a reference value (P.sub.m,

A method for controlling transmission power of a radio transmitter in a cellular communications system, such as in a CDMA-system, which includes determining a reference value (SIR.sub.m) indicating the quality of the signals received from the radiotransmitter, determining a reference value (P.sub.m, SIR.sub.pm) indicating the current traffic load in the radiocell, and commanding the radio transmitter to adjust transmission power. In order to improve speed and reliability during any traffic conditions the method includes comparing both the reference value (SIR.sub.m) for the quality of the received signals, and the reference value (P.sub.m, SIR.sub.pm) for the traffic load with predetermined target values (SIR.sub.t, P.sub.t, SIR.sub.pt), and practicing the commanding of the radio transmitter to adjust its transmission power depending on the result of the comparison.

대표청구항 ▼

[ I claim:] [1.] A method for controlling transmission power of a radio transmitter in a radio cell in a cellular communications system, comprising the steps of:determining a first reference value (SIR.sub.m) indicating the quality of signals received from the radio transmitter;determining a second

[ I claim:] [1.] A method for controlling transmission power of a radio transmitter in a radio cell in a cellular communications system, comprising the steps of:determining a first reference value (SIR.sub.m) indicating the quality of signals received from the radio transmitter;determining a second reference value (P.sub.m, SIR.sub.pm) indicating current traffic load in the radio cellcommanding the radio transmitter to adjust transmission power thereof; andcomparing both said first reference value (SIR.sub.m) indicating the quality of the received signals, and said second reference value (P.sub.m, SIR.sub.pm) indicating the traffic load, with predetermined target values (SIR.sub.t, P.sub.t, SIR.sub.pt) to obtain a result;said commanding includes commanding the radio transmitter to adjust the transmission power thereof depending on said result of said comparison;said comparing of said first reference value (SIR.sub.m) indicating the quality of the received signals, and said second reference value (P.sub.m) indicating the traffic load with predetermined target values (SIR.sub.t, P.sub.t) comprises:calculating a first comparison value based on a relationship between said first reference value (SIR.sub.m) and a target value for said first reference value (SIR.sub.t);calculating a second comparison value based on a relationship between said second reference value (P.sub.m) and a target value for said second reference value (P.sub.t);combining said first and second comparison values to obtain a weighted comparison value (CV) which depends more on said first comparison value than on said second comparison value; andcomparing said weighted comparison value with a predetermined reference value to thereby determine if the transmission power of the radio transmitter should be increased or decreased.