Patent ID: 9722736
Date: 2017-08-01
CPC Classifications: H04L,H04W

Claim:
1. A method by a terminal in a wireless communication system, the method comprising: receiving first uplink (UL)/downlink (DL) configuration information for a primary cell and second UL/DL configuration information for a secondary cell; receiving data on a physical downlink shared channel (PDSCH) at a first subframe of the secondary cell from a base station; and transmitting a hybrid automatic repeat request-acknowledge (HARQ-ACK) corresponding to the received data at a second subframe to the base station, wherein a reference timing of the HARQ-ACK is determined based on whether the terminal is configured to monitor a control channel for the secondary cell in another serving cell, and a relationship between a first UL/DL configuration and a second UL/DL configuration.