figured by RRC signaling to enable CBG-based retransmission. When the CSI request field in a DCI triggers a CSI report(s) on PUSCH, the UE is required to provide a valid CSI report(s), if the first uplink symbol to carry the corresponding CSI report(s), including the effect of the timing advance, starts no earlier than at symbol lcsi, and if the first uplink symbol to carry the corresponding CSI report, including the effect of the timing advance, starts no earlier than at symbol l'CSI. The reference symbol lcsi is defined as the next uplink symbol with starting Tproc-CSI = 21921cs1k2-"Tc after the end of the last sym- bol of the PDCCH triggering the CSI report. The reference symbol l'CSI is defined as the next uplink symbol starting Tproc-CSI after the end of the last symbol of the lat- est aperiodic CSI-RS resource for channel measurements, aperiodic CSI-IM used for interference measurements, and aperiodic NZP CSI-RS for interference measurement, when aperiodic CSI-RS is used for channel measurement for the triggered nth CSI report [9]. 548 Chapter 4 Table 4.19: NR channel state information computation delay requirements 1 and 2 [9]. Delay Requirement 1 Delay Requirement 2 Z1 (Symbols) Z1 (Symbols) Z2 (Symbols) As a result, lcsi and l'CSI are defined as lcsi = maxlcsi(m) and l'CSI maxl'ssi(m) , where m=0,1,...NNSSI NCSI is the number of updated CSI report(s), lcsi(m) and l'csi(m) corresponds to the mth updated CSI report. The values of lcsi(m) and l'csi(m) are set to 11, l'1, 12, or l'2 depending on the CSI computation delay requirements as shown in Table 4.19, u corresponds to the where the UPDCCH corresponds to the subcarrier spacing of the PDCCH in which the DCI was transmitted, and HUL corresponds to the subcarrier spacing of the PUSCH in which the CSI report is transmitted, and HCSI-RS corresponds to the minimum subcarrier spacing of the aperiodic CSI-RS triggered by the DCI. 4.1.8.3 Semi-static/Dynamic Codebook HARQ-ACK Multiplexing The NR supports multiplexing of HARQ acknowledgments for multiple transpor