E. Unlike LTE where all possible TBSs were precalculated and listed in the MCS table, in NR, the TBS determination process is described as a procedure that has been illustrated in Fig. 4.53. As shown in the flow chart, the initial input to this algorithm is Ninfo; however, to determine this value, the following calculations are necessary [9]: DM-RS overhead The number of REs allocated for The number of symbols of the PDSCH The number of REsfor DM - RSper PRB The overhead configured by higher - layer PDSCH withina PRB allocation within the slot inthe scheduled duration including the overhead parameter Overhead in PDSCH - Serving CellConfig of the DM - RS CDM groups without data = min(156,NRE) The totalnumber of REs allocated for PDSCH The total number of allocated PRBs for the UE Ninfo = NRE Intermediate number of information bits Target code rate Modulation order Number of layers For downlink shared channel, the supported modulation schemes include QPSK, 16QAM, 64QAM, and 256QAM. After detecting the CSI-RS and estimating the channel quality, UE New Radio Access Physical Layer Aspects (Part 2) 537 Calculate Ninfo N info 3834 = max = log (Ninic -24) -5 CalculateN Calculate Ninfo N info 3840, round 2" -24 Determine TBS based on Table 17 R 1/4 Nax +24 TBS=8C N info 8424 TBS 8 Nox + 24 C Nee+24 8C 24 Figure 4.53 TBS determination procedure in NR [30]. reports the CQI to the gNB, which includes the information such as modulation scheme and coding rate. To balance the overhead and the granularity of CQI indication, two CQI/MCS tables are defined for eMBB, where the maximum order of modulation in one CQI/MCS table is 64QAM and in another table is 256QAM (see MCS Tables I and II in Table 4.16). The network will instruct the UE to select CQI/MCS table through RRC signaling. The third MCS table is meant for URLLC use cases where the target BLER is 10-5, , which is signaled to UE when the CRC of the PDCCH is scrambled with MCS-C-RNTI. This MCS table was designed to allow single transmissions to the UEs with delay sensitive a