Patent ID: 9578638
Date: 2017-02-21
CPC Classifications: H04L,H04W

Claim:
1. A method for transmitting control information in a communication system by a user equipment (UE) configured with a primary cell having uplink-downlink (UL-DL) configuration # 0 and a secondary cell having one of UL-DL configurations # 1 to # 6 , the method comprising: receiving, by the UE, a downlink control information (DCI) format comprising resource allocation information and a downlink assignment index (DAI) field, for the secondary cell; receiving, by the UE, a physical downlink shared channel (PDSCH) indicated by the DCI format through the secondary cell; and transmitting, by the UE, a set of one or more hybrid automatic repeat request (HARQ)-acknowledgement (ACK) bits (o wherein if cross-carrier scheduling is configured for the secondary cell, one or more HARQ-ACK bits for the PDSCH are given as (i) o wherein subframe configurations according to the UL-DL configurations # where, D denotes a DL subframe, U denotes a UL subframe, and S denotes a special subframe.