Tech-invite 3GPPspace IETF RFCs SIP

index 21 22 23 24 25 26 27 28 29 31 32 33 34 35 36 37 38 4‑5x

Content for TS 38.321 Word version: 17.3.0

1… 4… 5… 6…

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 MBS Broadcast 5.7b Discontinuous Reception (DRX) for MBS Multicast 5.8 Transmission and reception without dynamic scheduling 5.9 Activation/Deactivation of SCells 5.10 Activation/Deactivation of PDCP duplication 5.11 MAC reconfiguration 5.12 MAC Reset 5.13 Handling of unknown, unforeseen and erroneous protocol data 5.14 Handling of measurement gaps 5.15 Bandwidth Part (BWP) operation 5.16 SUL operation 5.17 Beam Failure Detection and Recovery procedure 5.18 Handling of MAC CEs 5.19 Data inactivity monitoring 5.21 LBT operation 5.22 SL-SCH Data transfer 5.23 SL-BCH data transfer 5.24 Handling of PRS Processing Window 5.25 Positioning Measurement Gap Activation/Deactivation Request 5.26 Positioning SRS transmission in RRC_INACTIVE 5.27 Small Data Transmission 5.28 Sidelink Discontinuous Reception (DRX) 5.29 Activation/Deactivation of SCG 5.30 Handling of FR2 UL gap

5 MAC procedures p. 18

5.1 Random Access procedure p. 18

5.1.1 Random Access procedure initialization p. 18

5.1.1a Initialization of variables specific to Random Access type |R16| p. 22

5.1.1b Selection of the set of Random Access resources for the Random Access procedure |R17| p. 25

5.1.1c Availability of the set of Random Access resources |R17| p. 26

5.1.1d Selection of the set of Random Access resources based on feature prioritization |R17| p. 27

5.1.2 Random Access Resource selection p. 27

5.1.2a Random Access Resource selection for 2-step RA type |R16| p. 30

5.1.3 Random Access Preamble transmission p. 32

5.1.3a MSGA transmission |R16| p. 33

5.1.4 Random Access Response reception p. 34

5.1.4a MSGB reception and contention resolution for 2-step RA type |R16| p. 37

5.1.5 Contention Resolution p. 40

5.1.6 Completion of the Random Access procedure p. 42

5.2 Maintenance of Uplink Time Alignment p. 43

5.2a Maintenance of UL Synchronization |R17| p. 45

5.3 DL-SCH data transfer p. 46

5.3.1 DL Assignment reception p. 46

5.3.2 HARQ operation p. 48

5.3.2.1 HARQ Entity p. 48

5.3.2.2 HARQ process p. 48

5.3.3 Disassembly and demultiplexing p. 49

5.4 UL-SCH data transfer p. 50

5.4.1 UL Grant reception p. 50

5.4.2 HARQ operation p. 54

5.4.2.1 HARQ Entity p. 54

5.4.2.2 HARQ process p. 57

5.4.3 Multiplexing and assembly p. 59

5.4.3.1 Logical Channel Prioritization p. 59

5.4.3.1.1 General p. 59

5.4.3.1.2 Selection of logical channels p. 60

5.4.3.1.3 Allocation of resources p. 61

5.4.3.2 Multiplexing of MAC Control Elements and MAC SDUs p. 62

5.4.4 Scheduling Request p. 62

5.4.5 Buffer Status Reporting p. 67

5.4.6 Power Headroom Reporting p. 70

5.4.7 Pre-emptive Buffer Status Reporting |R16| p. 73

5.4.8 Timing Advance Reporting |R17| p. 74

5.5 PCH reception p. 75

5.6 BCH reception p. 75

5.7 Discontinuous Reception (DRX) p. 75

5.7a Discontinuous Reception (DRX) for MBS Broadcast |R17| p. 82

5.7b Discontinuous Reception (DRX) for MBS Multicast |R17| p. 83

5.8 Transmission and reception without dynamic scheduling p. 85

5.8.1 Downlink p. 85

5.8.1a Downlink for Multicast |R17| p. 85

5.8.2 Uplink p. 86

5.8.3 Sidelink |R16| p. 89

5.9 Activation/Deactivation of SCells p. 90

5.10 Activation/Deactivation of PDCP duplication p. 92

5.11 MAC reconfiguration p. 93

5.12 MAC Reset p. 93

5.12a Void

5.13 Handling of unknown, unforeseen and erroneous protocol data p. 95

5.14 Handling of measurement gaps p. 95

5.15 Bandwidth Part (BWP) operation p. 96

5.15.1 Downlink and Uplink |R16| p. 96

5.15.2 Sidelink |R16| p. 100

5.16 SUL operation p. 101

5.17 Beam Failure Detection and Recovery procedure p. 101

5.18 Handling of MAC CEs p. 105

5.18.1 General p. 105

5.18.2 Activation/Deactivation of Semi-persistent CSI-RS/CSI-IM resource set p. 106

5.18.3 Aperiodic CSI Trigger State Subselection p. 106

5.18.4 Activation/Deactivation of UE-specific PDSCH TCI state p. 106

5.18.5 Indication of TCI state for UE-specific PDCCH p. 106

5.18.6 Activation/Deactivation of Semi-persistent CSI reporting on PUCCH p. 107

5.18.7 Activation/Deactivation of Semi-persistent SRS and Indication of spatial relation of SP/AP SRS p. 107

5.18.8 Activation/Deactivation of spatial relation of PUCCH resource p. 107

5.18.9 Activation/Deactivation of semi-persistent ZP CSI-RS resource set p. 108

5.18.10 Recommended Bit Rate p. 108

5.18.11 Void

5.18.12 Void

5.18.13 Void

5.18.14 Update of Pathloss Reference RS of SRS |R16| p. 109

5.18.15 Update of Pathloss Reference RS of PUSCH |R16| p. 109

5.18.16 Indication of spatial relation of SRS resource for a Serving Cell set |R16| p. 109

5.18.17 Activation/Deactivation of Semi-Persistent Positioning SRS |R16| p. 109

5.18.18 Timing offset adjustments for IAB |R16| p. 110

5.18.19 Guard symbols for IAB |R16| p. 110

5.18.20 Positioning Measurement Gap Activation/Deactivation Command |R17| p. 111

5.18.21 PPW Activation/Deactivation Command |R17| p. 111

5.18.22 Update of PUCCH Power Control Set for multiple TRP PUCCH repetition |R17| p. 112

5.18.23 Unified TCI States Activation/Deactivation MAC CE |R17| p. 112

5.18.24 Update of Differential Koffset |R17| p. 112

5.18.25 BFD-RS Indication MAC CE |R17| p. 112

5.18.26 Restricted and recommended beam indication for IAB |R17| p. 112

5.18.27 DL TX power adjustment for IAB |R17| p. 113

5.18.28 UL PSD range adjustment for IAB |R17| p. 113

5.18.29 Timing case indication for IAB |R17| p. 114

5.18.30 Case-6 Timing Request |R17| p. 114

5.19 Data inactivity monitoring p. 114

5.20 Void

5.21 LBT operation |R16| p. 115

5.21.1 General p. 115

5.21.2 LBT failure detection and recovery procedure p. 115

5.22 SL-SCH Data transfer |R16| p. 116

5.22.1 SL-SCH Data transmission p. 116

5.22.1.1 SL Grant reception and SCI transmission p. 116

5.22.1.2 TX resource (re-)selection check p. 128

5.22.1.2a Re-evaluation and Pre-emption p. 129

5.22.1.2b Re-selection for using a received resource conflict indication |R17| p. 130

5.22.1.3 Sidelink HARQ operation p. 131

5.22.1.3.1 Sidelink HARQ Entity p. 131

5.22.1.3.1a Sidelink process p. 133

5.22.1.3.2 PSFCH reception p. 135

5.22.1.3.3 HARQ-based Sidelink RLF detection p. 136

5.22.1.4 Multiplexing and assembly p. 136

5.22.1.4.0 General p. 136

5.22.1.4.1 Logical channel prioritization p. 136

5.22.1.4.1.1 General p. 136

5.22.1.4.1.2 Selection of logical channels p. 137

5.22.1.4.1.3 Allocation of sidelink resources p. 138

5.22.1.4.2 Multiplexing of MAC Control Elements and MAC SDUs p. 139

5.22.1.5 Scheduling Request p. 139

5.22.1.6 Buffer Status Reporting p. 140

5.22.1.7 CSI Reporting p. 143

5.22.1.8 Void

5.22.1.9 IUC-Request transmission |R17| p. 143

5.22.1.10 IUC-Information Reporting |R17| p. 143

5.22.2 SL-SCH Data reception p. 144

5.22.2.1 SCI reception p. 144

5.22.2.2 Sidelink HARQ operation p. 145

5.22.2.2.1 Sidelink HARQ Entity p. 145

5.22.2.2.2 Sidelink process p. 145

5.22.2.3 Disassembly and demultiplexing p. 147

5.23 SL-BCH data transfer |R16| p. 147

5.23.1 SL-BCH data transmission p. 147

5.23.2 SL-BCH data reception p. 147

5.24 Handling of PRS Processing Window |R17| p. 147

5.25 Positioning Measurement Gap Activation/Deactivation Request |R17| p. 147

5.26 Positioning SRS transmission in RRC_INACTIVE |R17| p. 148

5.26.1 General p. 148

5.26.2 TA validation for SRS transmission in RRC_INACTIVE p. 148

5.27 Small Data Transmission |R17| p. 149

5.27.1 General p. 149

5.27.2 TA Validation for CG-SDT p. 150

5.28 Sidelink Discontinuous Reception (DRX) |R17| p. 150

5.28.1 General p. 150

5.28.2 Behaviour of UE receiving SL-SCH Data p. 151

5.28.3 Behaviour of UE transmitting SL-SCH Data p. 153

5.29 Activation/Deactivation of SCG |R17| p. 154

5.30 Handling of FR2 UL gap |R17| p. 155