Technique to provide channel format and signal processing for efficiently transmitting control information

摘要

A method is provided for transmitting Acknowledgement/Negative Acknowledgement (ACK/NACK) information at a User Equipment (UE) in a wireless communication system. The UE is configured to use a Physical Uplink Control Channel (PUCCH) format 3 for the transmission of the ACK/NACK information. A PUCCH format between a PUCCH format 1a/1b and the PUCCH format 3 is determined for transmission of the ACK/NACK information for downlink transmission in a downlink frame set including M downlink subframes is to be transmitted, where M≥1, in one uplink subframe, according to whether at least one of specific conditions is met. The ACK/NACK information is transmitted using the determined PUCCH format in the one uplink subframe. The ACK/NACK information is transmitted by using the PUCCH format 1a/1b, when at least one of the specific conditions is met. One serving cell is configured for the UE.