METHOD AND APPARATUS FOR TRANSMITTING CONTROL INFORMATION IN WIRELESS COMMUNICATION SYSTEM

摘要

The present invention relates to a wireless communication system, particularly, a method in which a terminal transmits control information in a CA-based wireless communication system and an apparatus for the method, the method comprising: configuring a first cell and a second cell having different subframe configurations, wherein the second cell has any one of UL-DL configuration #0 to #6; receiving a DC) format including a DAI field, for the second cell; and transmitting HARQ-ACK information relating to the downlink DCI format. For HARQ-ACK timing, in cases where a reference UL-DL configuration applied to the second cell is any one of UL-DL configurations #1 to #6, the DAI field is used in a process of transmitting the HARQ-ACK information. For HARQ-ACK timing, in cases where a reference UL-DL configuration applied to the second cell is #0, the DAI field is not used in a process of transmitting the HARQ-ACK information.

主权项

1. A method for transmitting control information by a user equipment (UE) in a carrier aggregation (CA)-based wireless communication system, the UE configured with a first cell set to one of uplink-downlink (UL-DL) configurations #0 to #6 and a second cell set to another of UL-DL configurations #0 to #6, the method comprising:
receiving a DL downlink control information (DCI) having a DL DCI format comprising a downlink assignment index (DAI) field, for the second cell; and transmitting hybrid automatic repeat request (HARQ)-acknowledgement (ACK) information related to the DL DCI format, wherein, for HARQ-ACK timing, if a reference UL-DL configuration applied to the second cell is one of UL-DL configurations #1 to #6, the DAI field is used in a procedure for transmitting the HARQ-ACK information, wherein, for HARQ-ACK timing, if a reference UL-DL configuration applied to the second cell is UL-DL configuration #0, the DAI field is not used in a procedure for transmitting the HARQ-ACK information, and wherein subframe configurations according to the UL-DL configurations #0 to #6 are given as shown in the following table:UL-DLSubframe NumberConfiguration01234567890DSUUUDSUUU1DSUUDDSUUD2DSUDDDSUDD3DSUUUDDDDD4DSUUDDDDDD5DSUDDDDDDD6DSUUUDSUUD where, D denotes a DL subframe, U denotes a UL subframe, and S denotes a special subframe.