METHOD FOR UPLINK POWER CONTROL IN WIRELESS ACCESS SYSTEM SUPPORTING UNLICENSED BAND AND APPARATUS FOR SUPPORTING SAME

摘要

The present invention provides methods for uplink power control in a wireless access system supporting an unlicensed band, and apparatuses for supporting the same. As an embodiment of the present invention, a method for performing uplink (UL) power control by a UE in a wireless access system supporting an unlicensed band may comprise the steps of: receiving two or more UL grants including scheduling information; when a licensed band cell (L cell) and an unlicensed band cell (U cell) are included in scheduled serving cells, performing power control on the basis of the sum (P_L) of transmission power required by the L cell, the maximum transmission power (P_u) that can be transmitted by the U cell, a guaranteed power value (P_g) for the U cell, and the maximum transmission power (PCMAX) that can be used by the UE; and transmitting a UL signal in each of the L cell and the U cell on the basis of transmission power derived from the power control, and the scheduling information.