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Content for TS 36.321 Word version: 18.2.0

1… 4… 5… 6… 7… A…

5.1 Random Access procedure 5.2 Maintenance of Uplink Time Alignment 5.2a Maintenance of UL Synchronization 5.3 DL-SCH data transfer 5.4 UL-SCH data transfer 5.5 PCH reception 5.6 BCH reception 5.7 Discontinuous Reception (DRX) 5.7a Discontinuous Reception (DRX) for SC-PTM 5.8 MAC reconfiguration 5.9 MAC Reset 5.10 Semi-Persistent Scheduling 5.11 Handling of unknown, unforeseen and erroneous protocol data 5.12 MCH reception 5.13 Activation/Deactivation of SCells 5.14 SL-SCH Data transfer 5.14.1 SL-SCH Data transmission 5.14.2 SL-SCH Data reception 5.15 SL-DCH data transfer 5.15.1 SL-DCH data transmission 5.15.2 SL-DCH data reception 5.16 SL-BCH data transfer 5.17 Data inactivity monitoring 5.18 Recommended Bit Rate 5.19 Activation/Deactivation of CSI-RS resources 5.20 Preallocated uplink grant 5.21 SC-PTM Stop Indication 5.22 Entering Dormant SCell state 5.23 Autonomous Uplink 5.24 Activation/Deactivation of PDCP duplication 5.25 Transmission of Downlink Channel Quality Report 5.26 Update of Differential Koffset 5.27 GNSS measurement 5.28 UL Transmission Extension
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5 MAC procedures p. 19

5.1 Random Access procedure p. 19

5.1.1 Random Access Procedure initialization p. 19

5.1.2 Random Access Resource selection p. 22

5.1.3 Random Access Preamble transmission p. 24

5.1.4 Random Access Response reception p. 26

5.1.5 Contention Resolution p. 29

5.1.6 Completion of the Random Access procedure p. 32

5.2 Maintenance of Uplink Time Alignment p. 32

5.2a Maintenance of UL Synchronization p. 34

5.3 DL-SCH data transfer p. 34

5.3.1 DL Assignment reception p. 34

5.3.2 HARQ operation p. 36

5.3.2.1 HARQ Entity p. 36

5.3.2.2 HARQ process p. 37

5.3.3 Disassembly and demultiplexing p. 38

5.4 UL-SCH data transfer p. 39

5.4.1 UL Grant reception p. 39

5.4.2 HARQ operation p. 42

5.4.2.1 HARQ entity p. 42

5.4.2.2 HARQ process p. 45

5.4.3 Multiplexing and assembly p. 48

5.4.3.1 Logical channel prioritization p. 48

5.4.3.2 Multiplexing of MAC Control Elements and MAC SDUs p. 51

5.4.4 Scheduling Request p. 51

5.4.5 Buffer Status Reporting p. 52

5.4.5a Data Volume and Power Headroom Reporting p. 54

5.4.6 Power Headroom Reporting p. 55

5.4.7 Preconfigured Uplink Resource p. 57

5.4.7.1 Transmission using PUR p. 57

5.4.7.2 Maintenance of PUR Uplink Time Alignment p. 58

5.4.8 Access Stratum Release Assistance Indication p. 59

5.4.9 Timing Advance Reporting p. 59

5.4.10 GNSS validity duration reporting p. 60

5.5 PCH reception p. 60

5.6 BCH reception p. 60

5.7 Discontinuous Reception (DRX) p. 61

5.7a Discontinuous Reception (DRX) for SC-PTM p. 66

5.8 MAC reconfiguration p. 66

5.9 MAC Reset p. 67

5.10 Semi-Persistent Scheduling p. 67

5.10.1 Downlink p. 68

5.10.2 Uplink p. 68

5.11 Handling of unknown, unforeseen and erroneous protocol data p. 69

5.12 MCH reception p. 70

5.13 Activation/Deactivation of SCells p. 70

5.14 SL-SCH Data transfer p. 72

5.14.1 SL-SCH Data transmission p. 72

5.14.1.1 SL Grant reception and SCI transmission p. 72

5.14.1.2 Sidelink HARQ operation p. 78

5.14.1.2.1 Sidelink HARQ Entity p. 78

5.14.1.2.2 Sidelink process p. 78

5.14.1.3 Multiplexing and assembly p. 79

5.14.1.3.1 Logical channel prioritization p. 79

5.14.1.3.2 Multiplexing of MAC SDUs p. 80

5.14.1.4 Buffer Status Reporting p. 80

5.14.1.5 TX carrier (re-)selection for V2X sidelink communication p. 82

5.14.2 SL-SCH Data reception p. 83

5.14.2.1 SCI reception p. 83

5.14.2.2 Sidelink HARQ operation p. 83

5.14.2.2.1 Sidelink HARQ Entity p. 83

5.14.2.2.2 Sidelink process p. 84

5.14.2.3 Disassembly and demultiplexing p. 84

5.15 SL-DCH data transfer p. 84

5.15.1 SL-DCH data transmission p. 84

5.15.1.1 Resource allocation p. 84

5.15.1.2 Sidelink HARQ operation p. 85

5.15.1.2.1 Sidelink HARQ Entity p. 85

5.15.1.2.2 Sidelink process p. 85

5.15.2 SL-DCH data reception p. 86

5.15.2.1 Sidelink HARQ operation p. 86

5.15.2.1.1 Sidelink HARQ Entity p. 86

5.15.2.1.2 Sidelink process p. 87

5.16 SL-BCH data transfer p. 87

5.16.1 SL-BCH data transmission p. 87

5.16.2 SL-BCH data reception p. 87

5.17 Data inactivity monitoring p. 87

5.18 Recommended Bit Rate p. 88

5.19 Activation/Deactivation of CSI-RS resources p. 88

5.20 Preallocated uplink grant p. 89

5.21 SC-PTM Stop Indication p. 89

5.22 Entering Dormant SCell state p. 89

5.23 Autonomous Uplink p. 91

5.24 Activation/Deactivation of PDCP duplication p. 91

5.25 Transmission of Downlink Channel Quality Report p. 91

5.26 Update of Differential Koffset p. 92

5.27 GNSS measurement p. 92

5.28 UL Transmission Extension p. 93