Patent ID: 9680622
Date: 2017-06-13
CPC Classifications: H04B,H04L,H04W

Claim:
1. A method of transmitting a hybrid automatic repeat request (HARQ) acknowledgement (ACK)/negative-acknowledgement (NACK) in a wireless communication system, the method performed by a user equipment (UE) and comprising: generating ACK/NACK bits for downlink subframes from a plurality of serving cells; arranging the ACK/NACK bits in an ascending order of cell indexes of the plurality of serving cells such that the ACK/NACK bits include a series of ACK/NACK bits for downlink subframes of a first cell among the plurality of serving cells and a series of ACK/NACK bits for downlink subframes of a second cell among the plurality of serving cells; and transmitting the ACK/NACK bits to a base station, wherein the first cell among the plurality of serving cells has a lowest cell index, and wherein the second cell among the plurality of serving cells has a next lowest cell index.