Efficient control information transmission method and apparatus for supporting multiple antenna transmission technique

A user equipment (UE), comprising:

• at least one hardware processor;
• and
• a non-transitory computer-readable storage medium coupled to the at least one hardware processor and storing programming instructions for execution by the at least one hardware processor, wherein the programming instructions, when executed, cause the at least one hardware processor to perform operations comprising:
• transmitting a first codeword (CW) and a second CW to a base station (BS) via a physical uplink shared channel (PUSCH);
• receiving downlink control information (DCI) from the BS via a physical downlink control channel (PDCCH), wherein the DCI comprises a first new data indicator (NDI) field corresponding to the first CW and a second NDI field corresponding to the second CW;
• and
• retransmitting the first CW or the second CW when at least one of the first NDI field or second NDI field has not been toggled, wherein the first CW is retransmitted when the first NDI field has not been toggled and the second CW is retransmitted when the second NDI field has not been toggled.

A non-transitory computer-readable medium storing instructions which, when executed, cause a computing device to perform operations comprising:

• transmitting a first codeword (CW) and a second CW to a base station (BS) via a physical uplink shared channel (PUSCH);
• receiving downlink control information (DCI) from the BS via a physical downlink control channel (PDCCH), wherein the DCI comprises a first new data indicator (NDI) field corresponding to the first CW and a second NDI field corresponding to the second CW;
• and
• retransmitting the first CW or the second CW when at least one of the first NDI field or second NDI field has not been toggled, wherein the first CW is retransmitted when the first NDI field has not been toggled and the second CW is retransmitted when the second NDI field has not been toggled.