Patent ID: 9113458
Filing Date: 2015-08-18
Classification: H04L,H04W

Abstract:
1. A method for transmitting Acknowledgement/Negative Acknowledgement (ACK/NACK) information in a wireless communication system, the method performed by a User Equipment (UE) and comprising: determining a Physical Uplink Control Channel (PUCCH) format and resource through which ACK/NACK information for downlink transmission in a downlink frame set including M (M≧1) downlink subframes is to be transmitted; and transmitting the ACK/NACK information using the PUCCH format and resource in one uplink subframe, wherein more than one serving cell is configured for the UE and the more than one serving cell includes one Primary Cell (PCell) and at least one Secondary Cell (SCell), and wherein the ACK/NACK information is transmitted using a PUCCH format 1a/1b, when one Physical Downlink Shared Channel (PDSCH) transmission is present in the downlink subframe set only on the PCell where a corresponding Physical Downlink Control Channel (PDCCH) is not detected, and a PDCCH indicating a Semi-Persistent Scheduling (SPS) release is not present in the downlink subframe set.