Patent ID: 9516637
Filing Date: 2016-12-06
CPC Classification: H04L,H04W

Claim Text:
1. A method for transmitting an acknowledgement/negative acknowledgement (ACK/NACK) signal by a user equipment (UE) in a wireless communication system, the UE being configured with a primary cell (PCell) and a secondary cell (SCell), the method comprising: receiving downlink control information including a first field for transmit power control information via a physical downlink control channel (PDCCH); receiving downlink data via a physical downlink shared channel (PDSCH) based on the downlink control information; and transmitting an ACK/NACK signal for the downlink data through an ACK/NACK resource, wherein, when the downlink data is received on the PCell, the downlink control information further includes a second field for ACK/NACK resource offset information, and the ACK/NACK resource is determined by adding a lowest resource index of the PDCCH and a value of the ACK/NACK resource offset information, and wherein, when the downlink control information and the downlink data are received on the SCell, the first field includes ACK/NACK resource indication information and the ACK/NACK resource is determined as an ACK/NACK resource indicated by the ACK/NACK resource indication information from among a plurality of ACK/NACK resources configured through a higher layer.