Patent ID: 9680628
Date: 2017-06-13
CPC Classifications: H04J,H04L,H04W

Claim:
1. A method in a wireless communication system, the method comprising: transmitting, at a base station, information on a primary cell operating in a frequency division duplexing (FDD) mode and a secondary cell operating in a time division duplexing (TDD) mode; transmitting, at the base station, configuration information configuring a first format of an uplink control channel; transmitting, at the base station, downlink scheduling information for downlink data; transmitting, at the base station, the downlink data in a first subframe according to the downlink scheduling information; and receiving, at the base station, control information corresponding to the downlink data on the primary cell, from a terminal, wherein the control information is received based on the first format of the uplink control channel, if the first subframe of the secondary cell is a downlink subframe, and wherein the control information is received based on a second format of the uplink control channel, if the first subframe of the secondary cell is an uplink subframe.