APPARATUS AND METHOD FOR TRANSMITTING POWER HEADROOM IN MULTIPLE COMPONENT CARRIER SYSTEM

摘要

The present invention relates to an apparatus and method in which a mobile station transmits power headroom information in a multiple component carrier system. This specification discloses receiving a mode decision parameter for deciding a mode of a PHR for UL CCs, configured in a mobile station, from a base station, deciding the mode of the PHR based on the mode decision parameter, and transmitting the power headroom information to the base station based on the decided mode of the PHR. Accordingly, there are advantages in that limited radio resources can be efficiently used because a mobile station's overhead according to a PHR can be reduced and a base station can efficiently perform uplink scheduling and link adaptation.