Method and apparatus for uplink control information transmission and reception

A base station (BS) comprising:

• a processor;
• and
• a transceiver operably coupled to the processor, the transceiver configured to:
• transmit information about N measurement entities, where N>1;
• transmit an indication via two-level downlink control information (DCI) including a first DCI (DCI1) and a second DCI (DCI2), wherein the indication triggers a channel state information (CSI) report;
• and
• receive the CSI report including M CSIs associated with the N measurement entities, where M<=N.

A method performed by a user equipment (UE), the method comprising:

• receiving information about N measurement entities, where N>1;
• receiving an indication via two-level downlink control information (DCI) including a first DCI (DCI1) and a second DCI (DCI2), wherein the indication triggers a channel state information (CSI) report;
• measuring, based on the information, the N measurement entities;
• determining, based on the indication and the measurement, M CSIs, where M<=N;
• and
• transmitting the CSI report including the M CSIs.