From reading on MAC 5G NR it seems that several MAC SDUs can be fitted in one MAC PDU. For example a MAC PDU could be
Header SDU1 Header SDU2 … Header MAC CE … padding
Question is, what determines the length of MAC PDU and how much I can multiplex SDUs in one PDU? Can I multiplex different QoS flows in same PDU? Can I multiplex same QoS flows in same PDU?
Thank you very mich for any insights