Method for performing power scaling for pucch transmission in a carrier aggregation system and a device therefor

Abstract

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for performing power scaling for PUCCH transmission at power limitation situation in a carrier aggregation system, the method comprising: configuring multiple Physical Uplink Control Channels (PUCCHs) for the UE; performing power scaling down for at least one first PUCCHs of the multiple PUCCHs if the UE does not have enough power to transmit multiple PUCCHs at the same time; transmitting the at least one first PUCCHs using a power determined by the power scaling down; and transmitting second PUCCHs except the at least one first PUCCHs which the power scaling down is performed, without any power scaling down.

Dependencies are inferred from the claim text.