METHOD AND DEVICE FOR TRANSMITTING CHANNEL STATE INFORMATION IN WIRELESS ACCESS SYSTEM SUPPORTING MACHINE TYPE COMMUNICATION

摘要

The present invention provide a method by which a terminal measures channel state information (CSI), a method by which a terminal transmits CSI, and devices for supporting the methods. A method by which a terminal feeds back CSI in a wireless access system, according to one embodiment of the present invention, can comprise the steps of: receiving an upper layer signal including a channel quality indicator (CQI) index; receiving a physical downlink control channel (PDCCH) signal including an aperiodic CSI request field; receiving a physical downlink shared channel (PDSCH) signal that is repeatedly transmitted as many time as the number indicated by the CQI index; measuring the CSI for a CSI reference resource; and feeding back the measured CSI by using a physical uplink shared channel (PUSCH) signal.

主权项

1. A method for feeding back Channel State Information (CSI) by a User Equipment (UE) in a wireless access system, the method comprising:
receiving a higher layer signal including a Channel Quality Indicator (CQI) index; receiving a Physical Downlink Control Channel (PDCCH) signal including an aperiodic CSI request field; receiving a Physical Downlink Shared Channel (PDSCH) signal transmitted repeatedly as many times as a number indicated by the CQI index; measuring CSI in a CSI reference resource; and feeding back the measured CSI using a Physical Uplink Shared Channel (PUSCH) signal.