Patent ID: 9510326
Filing Date: 2016-11-29
CPC Classification: H04L,H04W

Claim Text:
1. A method for transmitting Acknowledgement/Negative Acknowledgement (ACK/NACK) information at a User Equipment (UE) configured to use Physical Uplink Control Channel (PUCCH) format 3 in a wireless communication system, the method comprising: determining that transmission of a scheduling request is configured in one uplink subframe in which the PUCCH format 3 transmission of ACK/NACK information for downlink transmission in a downlink subframe set including M downlink subframes is to be transmitted, wherein M≧1; determining a PUCCH format and resource based on the determination that the scheduling request transmission is configured in the one uplink subframe; and transmitting the ACK/NACK information using the determined PUCCH format and resource, wherein, when 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 only to one Semi-Persistent Scheduling (SPS) release Physical Downlink Control Channel (PDCCH) having a Downlink Assignment Index (DAI) value of 1 in the downlink subframe set or only to one Physical Downlink Shared Channel (PDSCH) indicated by detection of a corresponding PDCCH having a DAI value of 1 that is received only on a Primary Cell (PCell) in the downlink subframe set.