Patent ID: 9706540
Date: 2017-07-11
CPC Classifications: H04L,H04W

Claim:
1. A method of transmitting acknowledgement/negative-acknowledgement (ACK/NACK) information by a user equipment (UE) in a wireless communication system, the method comprising: receiving downlink control information (DCI) through a downlink (DL) control channel from a eNB; transmitting ACK/NACK information corresponding to the DCI through an uplink (UL) control channel resource, wherein an index of the UL control channel resource is determined by applying at least one of a first offset value or a second offset value to a start offset of the UL control channel resource region signaled via a higher layer; wherein the first offset value corresponds to an index of the antenna port used for the DL control channel transmission; and wherein the second offset value corresponds to a predetermined field of a DCI format of the DL control channel.