Patent ID: 7483709
Filing Date: 2009-01-27
Classification: H04W

Abstract:
1. A transmission power control method in a mobile communication system in which a mobile station connects with a plurality of radio base stations simultaneously; in said radio base station, said method comprising: a step of measuring a receiving level of an up-link from the mobile station; and a step of transmitting up-transmission power instruction information for instructing that up-transmission power be lowered to the mobile station when the receiving level is not less than a predetermined target value and of transmitting up-transmission power instruction information for instructing that up-transmission power be raised to the mobile station when the receiving level is below the predetermined target value: in the mobile station, said method comprising: a step of receiving the up-transmission power instruction information from the plurality of radio base stations connected thereto; and a step of determining up-transmission power using only up-transmission power instruction information from radio base stations having down-links of at least a predetermined communication quality, from among the up-transmission power instruction information received from the radio base stations.