Patent ID: 11949502
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. The method of claim 11, wherein the receiving of retransmitted DCI comprises:
transmitting channel state information (CSI) to the base station,
receiving, from the base station, transmitted DCI including an MCS index selected by the base station based on the CSI,
identifying modulation information on downlink data based on the MCS index, and performing data demodulation with reference to the modulation information,
transmitting, when the data demodulation fails, a NACK according to a demodulation failure of downlink data to the base station, and
receiving the retransmitted DCI including the retransmission MCS index corresponding to a modulation scheme of the MCS index selected for initial transmission from the base station.