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

Claim 1:
2. The electronic device of claim 1, wherein the processor is further configured to:
transmit channel state information (CSI) to the base station,
receive, from the base station, transmitted DCI including an MCS index selected by the base station based on the CSI,
identify modulation information on downlink data based on the MCS index, and to perform data demodulation with reference to the modulation information,
transmit a NACK according to a demodulation failure of downlink data to the base station, when the data demodulation fails, and
receive, from the base station, retransmitted DCI including the retransmission MCS index corresponding to a modulation scheme of the MCS index selected for initial transmission.