Patent ID: 9100158
Filing Date: 2015-08-04
Classification: H04L

Abstract:
1. A method of transmitting acknowledgement/non-acknowledgement (ACK/NACK) by User Equipment (UE) for which a plurality of serving cells has been configured in a wireless communication system operating in Time Division Duplex (TDD), the method comprising: configuring a plurality of serving cells; receiving a codeword through at least one of the plurality of configured serving cells; and transmitting ACK/NACK information indicative of reception acknowledgement for the codeword, wherein if the UE receives the codeword through only a first serving cell of the plurality of configured serving cells, the UE transmits the ACK/NACK according to a first transmission scheme, and if the UE receives the codeword through the first serving cell and a second serving cell, the UE transmits the ACK/NACK according to a second transmission scheme.