Patent ID: 9723592
Date: 2017-08-01
CPC Classifications: H04L,H04W

Claim:
1. A method for transmitting an uplink signal by a user equipment (UE) in a wireless communication system, the method comprising: receiving, by the UE, downlink control information through a physical downlink control channel (PDCCH) including one or more control channel elements (CCEs) from a first cell; transmitting, by the UE, acknowledgment (ACK)/negative ACK (NACK) information associated with the PDCCH through a physical uplink control channel (PUCCH) of a carrier, wherein the ACK/NACK information is transmitted using a first PUCCH resource nPUCCH_1=nCCE+NPUCCH_1 among a plurality of PUCCH resources configured on the carrier, where NPUCCH_1 is a first offset configured by a radio resource control (RRC) layer and nCCE is a lowest CCE index of the PDCCH, when the UE is not configured to transmit the PUCCH using a second cell ID separate from a first cell ID of the first cell, wherein the ACK/NACK information is transmitted using a second PUCCH resource nPUCCH_2=nCCE+NPUCCH_2 among the plurality of PUCCH resources configured on the carrier, where NPUCCH_2 is a second offset configured by the RRC layer and nCCE is the lowest CCE index of the PDCCH, when the UE is configured to transmit the PUCCH using the second cell ID, and wherein the second offset is separate from the first offset; and receiving, by the UE, the first offset, the first cell ID, the second offset, and the second cell ID.