Patent ID: 7924748

Claim:
A method for controlling power by a transmitter of a communication system, the method comprising: receiving Channel State Information (CSI) between the transmitter and each of a plurality of receivers from the plurality of receivers through a Time Division Duplexing (TDD) uplink (UL) region; allocating, by the transmitter, TDD regions by applying a TDD communication scheme and a Frequency Division Duplexing (FDD) UL region by applying an FDD communication scheme, in accordance with the CSI, the TDD regions including the TDD UL region and a TDD downlink (DL) region; providing, by the transmitter, DL data for a communication service to the plurality of receivers through the TDD DL region; receiving, by the transmitter, power control information from the receiver through the FDD UL region while providing the DL data for the communication service; and adjusting, by the transmitter, a level of transmission power used for providing the DL data for communication service according to the received power control information, and providing the DL data for the communication service to the receiver using the adjusted transmission power; wherein receiving power control information comprises allowing, by the transmitter, each of the plurality of receivers to measure a strength of a received signal in the TDD UL region while providing the communication service, and receiving, by the transmitter, power control information generated according to the measured strength of the received signal, the strength of the received signal is a Signal-to-Interference and Noise Ratio (SINR) of the received signal in the TDD UL region.