Foreword1 Scope2 References3 Definitions, symbols and abbreviations4 General5 MAC procedures5.1 Random Access procedure5.2 Maintenance of Uplink Time Alignment5.2a Maintenance of UL Synchronization5.3 DL-SCH data transfer5.4 UL-SCH data transfer5.5 PCH reception5.6 BCH reception5.7 Discontinuous Reception (DRX)5.7a Discontinuous Reception (DRX) for MBS Broadcast5.7b Discontinuous Reception (DRX) for MBS Multicast5.8 Transmission and reception without dynamic scheduling5.9 Activation/Deactivation of SCells5.10 Activation/Deactivation of PDCP duplication5.11 MAC reconfiguration5.12 MAC Reset5.12a Void5.13 Handling of unknown, unforeseen and erroneous protocol data5.14 Handling of measurement gaps5.15 Bandwidth Part (BWP) operation5.16 SUL operation5.17 Beam Failure Detection and Recovery procedure5.18 Handling of MAC CEs5.19 Data inactivity monitoring5.20 Void5.21 LBT operation5.22 SL-SCH Data transfer5.23 SL-BCH data transfer5.24 Handling of PRS Processing Window5.25 Positioning Measurement Gap Activation/Deactivation Request5.26 Positioning SRS transmission in RRC_INACTIVE5.27 Small Data Transmission5.28 Sidelink Discontinuous Reception (DRX)5.29 Activation/Deactivation of SCG5.30 Handling of FR2 UL gap6 Protocol Data Units, formats and parameters6.1 Protocol Data Units6.1.1 General6.1.2 MAC PDU (DL-SCH and UL-SCH except transparent MAC and Random Access Response)6.1.3 MAC Control Elements (CEs)6.1.4 MAC PDU (transparent MAC)6.1.5 MAC PDU (Random Access Response)6.1.5a MAC PDU (MSGB)6.1.6 MAC PDU (SL-SCH)6.2 Formats and parameters7 Variables and constants 5.20 Void 38.3213GPPMedium Access Control (MAC) protocol specificationNRRelease 17TS Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM