Patent ID: 9615267
Date: 2017-04-04
CPC Classifications: H04L,H04W

Claim:
1. A method for transmitting hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback information by a user equipment (UE) in a wireless communication system, the method comprising: determining a HARQ-ACK timing and a component carrier (CC) for transmitting the HARQ-ACK feedback information, based on a composition structure indicating that a frequency division duplexing (FDD) CC or a time division duplexing (TDD) CC configured for the UE is a primary CC (PCC); and transmitting the HARQ-ACK feedback information on a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) of the determined CC, based on the determined HARQ-ACK timing, wherein, if the composition structure indicates that the FDD CC is the PCC, determining the HARQ-ACK timing and the CC for transmitting the HARQ-ACK feedback information comprises: grouping first CCs configured with an FDD configuration into a first group; grouping second CCs configured with a TDD configuration into a second group; and determining the HARQ-ACK timing for each of the second CCs in the second group based on TDD uplink/downlink configurations of the second CCs, wherein HARQ-ACK feedback information of the first group is transmitted on the PCC based on an FDD HARQ-ACK timing, and HARQ-ACK feedback information of the second group is transmitted on a specific TDD CC based on the determined HARQ-ACK timing.