| CPC H04W 24/10 (2013.01) [H04B 7/0478 (2013.01); H04B 7/0695 (2013.01); H04B 7/088 (2013.01); H04L 1/00 (2013.01); H04L 5/0057 (2013.01); H04W 72/0446 (2013.01); H04W 72/21 (2023.01); H04W 72/56 (2023.01)] | 20 Claims |

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1. A method performed by a terminal in a wireless communication system, the method comprising:
identifying a portion of second part of channel state information (CSI) (CSI part 2) to be transmitted based on a priority of each of a plurality of CSIs in the CSI part 2;
mapping first part of the CSI (CSI part 1) and the identified portion of the CSI part 2 to bits of uplink control information (UCI); and
transmitting, to a base station, the mapped UCI bits on a physical uplink shared channel (PUSCH),
wherein the CSI part 1 includes a rank indicator (RI) and a channel quality indicator (CQI), and
wherein the CSI part 2 includes precoding matrix index (PMI),
wherein a priority of each of one or more subband CSI in the CSI part 2 is determined based on a serving cell index of a CSI report, and
wherein a subband CSI corresponding to a CSI report with a larger serving cell index corresponds to a lower priority.
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