METHOD AND APPARATUS FOR CONTROLLING UPLINK POWER IN A WIRELESS ACCESS SYSTEM

摘要

According to one embodiment of the present invention, a method for reporting power headroom in a user equipment of a multi-carrier system, the method comprising steps of receiving a physical downlink control channel (PDCCH) signal comprising uplink resource allocation information from a base station; transmitting at least one of a physical uplink shared channel (PUSCH) signal and the physical uplink control channel (PUCCH) signal to the base station in a predetermined subframe on the basis of the uplink resource allocation information in accordance with a transmission mode; calculating one or more power headroom values for the predetermined subframe in accordance with the transmission mode; and transmitting a report message comprising the one or more power headroom values to the base station, wherein the user equipment reports its first type power headroom value and second type power headroom value for the predetermined subframe when the user equipment operates in transmission mode A, or reports its first type power headroom value when the user equipment operates in transmission mode B.