A method for adjusting transmit power of a serving base station (110-1) in a wireless communication system, the method comprising: receiving (210-1, 210-2, 210-n) measurement information indicating channel states of the serving base station (110-1) and at least one neighbor base station (110-2, 110-n) from at least one user equipment, UE, (130-1, 130-2, 130-n) served by the serving base station (110-2); receiving (220-2, 220-n), from the at least one neighbor base station (110-2, 110-n), first information including information about transmit power of the at least one neighbor base station (110-2, 110-n) and information about estimated signal-to-interference-plus-noise ratios, SINRs, related to at least one UE served by the at least one neighbor base station (110-2, 110-n) for a plurality of variations in the transmit power of the serving base station (110-1); determining a received SINR of the at least one UE (130-1, 130-2, 130-n) served by the serving base station (110-2) using the measurement information; determining the transmit power of the serving base station (110-1) using the received SINR of the at least one UE (130-1, 130-2, 130-n) served by the serving base station (110-2) and the information about the estimated SINRs related to the at least one UE served by the at least one neighbor base station (110-2, 110-n); estimating, based on the information about the transmit power of the at least one neighbor base station (110-2, 110-n) and the measurement information, SINRs related to the at least one UE (130-1, 130-2, 130-n) served by the serving base station (110-2) for a plurality of variations in the transmit power of the at least one neighbor base station (110-2, 110-n); and transmitting (220-1) second information including the estimated SINRs related the at least one UE (130-1, 130-2, 130-n) served by the serving base station (110-2) and information about the transmit power of the serving base station (110-1) to one or more of the at least one neighbor base station (110-2, 110-n). receiving (210-1, 210-2, 210-n) measurement information indicating channel states of the serving base station (110-1) and at least one neighbor base station (110-2, 110-n) from at least one user equipment, UE, (130-1, 130-2, 130-n) served by the serving base station (110-2); receiving (220-2, 220-n), from the at least one neighbor base station (110-2, 110-n), first information including information about transmit power of the at least one neighbor base station (110-2, 110-n) and information about estimated signal-to-interference-plus-noise ratios, SINRs, related to at least one UE served by the at least one neighbor base station (110-2, 110-n) for a plurality of variations in the transmit power of the serving base station (110-1); determining a received SINR of the at least one UE (130-1, 130-2, 130-n) served by the serving base station (110-2) using the measurement information; determining the transmit power of the serving base station (110-1) using the received SINR of the at least one UE (130-1, 130-2, 130-n) served by the serving base station (110-2) and the information about the estimated SINRs related to the at least one UE served by the at least one neighbor base station (110-2, 110-n); estimating, based on the information about the transmit power of the at least one neighbor base station (110-2, 110-n) and the measurement information, SINRs related to the at least one UE (130-1, 130-2, 130-n) served by the serving base station (110-2) for a plurality of variations in the transmit power of the at least one neighbor base station (110-2, 110-n); and transmitting (220-1) second information including the estimated SINRs related the at least one UE (130-1, 130-2, 130-n) served by the serving base station (110-2) and information about the transmit power of the serving base station (110-1) to one or more of the at least one neighbor base station (110-2, 110-n). <EOS>