6.1.4 MAC PDU (transparent MAC)
38.3213GPPMedium Access Control (MAC) protocol specificationNRRelease 17TS
A MAC PDU consists solely of a MAC SDU whose size is aligned to a TB; as described in Figure 6.1.4-1. This MAC PDU is used for transmissions on PCH, BCH, DL-SCH including BCCH, and SL-BCH.
Figure 6.1.4-1: Example of MAC PDU (transparent MAC)