Patent ID: 9369994
Filing Date: 2016-06-14
CPC Classification: H04L,H04W

Claim Text:
1. A method for transmitting Acknowledgement/Negative Acknowledgement (ACK/NACK) information at a User Equipment (UE) in a wireless communication system, the method comprising: determining whether transmission of a scheduling request is configured in one uplink subframe in which a PUCCH format 3 transmission of ACK/NACK information for downlink transmission in a downlink subframe set including M(M>1) downlink subframes is to be transmitted; determining a Physical Uplink Control Channel (PUCCH) format and resource through which the ACK/NACK information is to be transmitted; and transmitting the ACK/NACK information using the PUCCH format and resource, wherein, if the PUCCH format 3 transmission of the ACK/NACK information coincides with the one uplink subframe for the transmission of the scheduling request, the ACK/NACK information and the scheduling request are transmitted using PUCCH format 1b in the one uplink subframe, when the ACK/NACK information corresponds to one Physical Downlink Shared Channel (PDSCH) without a corresponding Physical Downlink Control Channel (PDCCH) received only on a Primary Cell (PCell) in the downlink subframe set, and the ACK/NACK information further corresponds to a Semi-Persistent Scheduling (SPS) release PDCCH having a Downlink Assignment Index (DAI) value of 1, or when the ACK/NACK information corresponds to the one PDSCH without a corresponding PDCCH received only on the PCell in the downlink subframe set, and the ACK/NACK information further corresponds to one PDSCH indicated by detection of a corresponding PDCCH having a DAI value of 1 that is received only on a PCell in the downlink subframe set.