frequency basis. The PDSCH transmits the DL-SCH and PCH transport channels. The DL-SCH contains the data specific to the UE terminals corresponding to the traffic data (unicast IP packets) and to the RRC (Radio Resource Control) control data, and contains SIB system information. The DL-SCH is in the form of one or two transport blocks. The PCH contains the RRC control data corresponding to the paging message. The PDSCH uses a modulation and coding scheme depending on the transmission channel with each UE terminal. The 5G-NR interface only offers one transmission mode for the PDSCH. However, this mode allows up to 8 transmission layers to be exploited on the 12 antenna ports from 1000 to 1011. The bit rate available to a user is a function of the modulation scheme, the performance of the encoder, the allocated frequency band and the implementation of spatial diversity (MIMO). The number of spatial layers exploited by the MIMO technology, the valence of the modulation (QPSK, 16 QAM, 64 QAM, 256 QAM), J the number of aggregated 5G-NR Radio Interface - The Physical Layer 5G-NR bands, the coding efficiency and f (j) the factor corresponding to the TDD configuration on the jth 5G-NR band (j = 1 if all the traffic is in DL, 0.8 or 0.75 or 0.4 depending on the configurations chosen between the upstream and downstream direction)): DataRate with THE as symbol numerology BW(J), as the duration for the u and the number of PRB in the jth 5G-NR band. The OH parameter corresponds to the overhead of the signaling message. The current values are OH = 0.14 for the FR1 band and OH = 0.18 for the FR2 band. There are two types of resource allocation in the time domain for the downlink named Type A and Type B (see section 4.5.2.2.1). Type A is an allocation on an entire slot, type B is an allocation for a mini slot. The PDSCH resource allocation in the time domain is indicated by the value of the time domain resource assignment field carried by the DCI message. The allocation table (Table 4.10) defines the offset value of the slot K0 