Patent ID: 8462705
Filing Date: 2013-06-11
Classification: H04L,H04W

Abstract:
1. A method for reporting power headroom in a user equipment of a multi-carrier system, the method comprising: 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 a 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 reporting the one or more power headroom values to the base station, wherein the user equipment reports a first type power headroom value and a second type power headroom value for the predetermined subframe when the user equipment operates in transmission mode A, and the user equipment reports the first type power headroom value when the user equipment operates in transmission mode B.