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Content for  TS 38.331  Word version:  18.5.1

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5  Proceduresp. 43

5.1  Generalp. 43

5.2  System informationp. 44

5.2.1  Introductionp. 44

5.2.2  System information acquisitionp. 45

5.2.2.1  General UE requirementsp. 45

5.2.2.2  SIB validity and need to (re)-acquire SIBp. 46

5.2.2.3  Acquisition of System Informationp. 49

5.2.2.4  Actions upon receipt of System Informationp. 57

5.2.2.4.1  Actions upon reception of the MIBp. 57
5.2.2.4.2  Actions upon reception of the SIB1p. 57
5.2.2.4.3  Actions upon reception of SIB2p. 64
5.2.2.4.4  Actions upon reception of SIB3p. 65
5.2.2.4.5  Actions upon reception of SIB4p. 65
5.2.2.4.6  Actions upon reception of SIB5p. 67
5.2.2.4.7  Actions upon reception of SIB6p. 67
5.2.2.4.8  Actions upon reception of SIB7p. 67
5.2.2.4.9  Actions upon reception of SIB8p. 67
5.2.2.4.10  Actions upon reception of SIB9p. 68
5.2.2.4.11  Actions upon reception of SIB10p. 69
5.2.2.4.12  Actions upon reception of SIB11p. 69
5.2.2.4.13  Actions upon reception of SIB12p. 69
5.2.2.4.14  Actions upon reception of SIB13p. 71
5.2.2.4.15  Actions upon reception of SIB14p. 71
5.2.2.4.16  Actions upon reception of SIBposp. 71
5.2.2.4.17  Actions upon reception of SIB15p. 71
5.2.2.4.18  Actions upon reception of SIB16p. 71
5.2.2.4.19  Actions upon reception of SIB17p. 71
5.2.2.4.19a  Actions upon reception of SIB17bisp. 71
5.2.2.4.20  Actions upon reception of SIB18p. 72
5.2.2.4.21  Actions upon reception of SIB19p. 72
5.2.2.4.22  Actions upon reception of SIB20p. 72
5.2.2.4.23  Actions upon reception of SIB21p. 72
5.2.2.4.24  Actions upon reception of SIB22p. 72
5.2.2.4.25  Actions upon reception of SIB23p. 72
5.2.2.4.26  Actions upon reception of SIB24p. 73
5.2.2.4.27  Actions upon reception of SIB25p. 73

5.2.2.5  Essential system information missingp. 73

5.2.2.6  T430 expiryp. 73

5.3  Connection controlp. 73

5.3.1  Introductionp. 73

5.3.2  Pagingp. 75

5.3.3  RRC connection establishmentp. 78

5.3.4  Initial AS security activationp. 89

5.3.5  RRC reconfigurationp. 90

5.3.5.1  Generalp. 90

5.3.5.2  Initiationp. 92

5.3.5.3  Reception of an RRCReconfiguration by the UEp. 92

5.3.5.4  Secondary cell group releasep. 109

5.3.5.5  Cell Group configurationp. 110

5.3.5.6  Radio Bearer configurationp. 119

5.3.5.7  AS Security key updatep. 126

5.3.5.8  Reconfiguration failurep. 127

5.3.5.9  Other configurationp. 131

5.3.5.9a  MUSIM gap configurationp. 136

5.3.5.10  MR-DC releasep. 137

5.3.5.11  Full configurationp. 138

5.3.5.12  BAP configurationp. 140

5.3.5.12a  IAB Other Configurationp. 140

5.3.5.13  Conditional Reconfigurationp. 142

5.3.5.13a  SCG activationp. 151

5.3.5.13b  SCG deactivationp. 152

5.3.5.13b1  SCG activation without SN messagep. 152

5.3.5.13c  FR2 UL gap configurationp. 152

5.3.5.13d  Application layer measurement configurationp. 153

5.3.5.14  Sidelink dedicated configurationp. 155

5.3.5.15  L2 U2N or U2U Relay UE configurationp. 157

5.3.5.16  L2 U2N or U2U Remote UE configurationp. 159

5.3.5.17  MP configurationp. 160

5.3.5.18  LTM configuration and executionp. 163

5.3.5.19  T348 expiryp. 167

5.3.6  Counter checkp. 168

5.3.7  RRC connection re-establishmentp. 169

5.3.8  RRC connection releasep. 181

5.3.9  RRC connection release requested by upper layersp. 187

5.3.10  Radio link failure related actionsp. 187

5.3.11  UE actions upon going to RRC_IDLEp. 195

5.3.12  UE actions upon PUCCH/SRS release requestp. 198

5.3.13  RRC connection resumep. 198

5.3.14  Unified Access Controlp. 219

5.3.15  RRC connection rejectp. 222

5.4  Inter-RAT mobilityp. 223

5.5  Measurementsp. 227

5.5.1  Introductionp. 227

5.5.2  Measurement configurationp. 230

5.5.3  Performing measurementsp. 241

5.5.4  Measurement report triggeringp. 248

5.5.4.1  Generalp. 248

5.5.4.2  Event A1 (Serving becomes better than threshold)p. 256

5.5.4.3  Event A2 (Serving becomes worse than threshold)p. 257

5.5.4.4  Event A3 (Neighbour becomes offset better than SpCell)p. 257

5.5.4.5  Event A4 (Neighbour becomes better than threshold)p. 258

5.5.4.6  Event A5 (SpCell becomes worse than threshold1 and neighbour becomes better than threshold2)p. 259

5.5.4.7  Event A6 (Neighbour becomes offset better than SCell)p. 260

5.5.4.8  Event B1 (Inter RAT neighbour becomes better than threshold)p. 260

5.5.4.9  Event B2 (PCell becomes worse than threshold1 and inter RAT neighbour becomes better than threshold2)p. 261

5.5.4.10  Event I1 (Interference becomes higher than threshold)p. 262

5.5.4.11  Event C1 (The NR sidelink channel busy ratio is above a threshold)p. 262

5.5.4.12  Event C2 (The NR sidelink channel busy ratio is below a threshold)p. 263

5.5.4.13Void

5.5.4.14Void

5.5.4.15  Event D1 (Distance between UE and referenceLocation1 is above threshold1 and distance between UE and referenceLocation2 is below threshold2)p. 263

5.5.4.15a  Event D2 (Distance between UE and the serving cell moving reference location is above threshold1 and distance between UE and a moving reference location is below threshold2)p. 264

5.5.4.16  CondEvent T1 (Time measured at UE is within a duration from threshold)p. 265

5.5.4.17  Event X1 (Serving L2 U2N Relay UE becomes worse than threshold1 and NR Cell becomes better than threshold2)p. 266

5.5.4.18  Event X2 (Serving L2 U2N Relay UE becomes worse than threshold)p. 266

5.5.4.19  Event Y1 (PCell becomes worse than threshold1 and candidate L2 U2N Relay UE becomes better than threshold2)p. 267

5.5.4.20  Event Y2 (Candidate L2 U2N Relay UE becomes better than threshold)p. 268

5.5.4.20b  Event Z1 (Serving L2 U2N Relay UE becomes worse than threshold1 and Candidate L2 U2N Relay UE becomes better than threshold2)p. 268

5.5.4.21  Event H1 (The Aerial UE altitude becomes higher than a threshold)p. 269

5.5.4.22  Event H2 (The Aerial UE altitude becomes lower than a threshold)p. 269

5.5.4.23  Event A3H1 (Neighbour becomes offset better than SpCell and the Aerial UE altitude becomes higher than a threshold)p. 270

5.5.4.24  Event A3H2 (Neighbour becomes offset better than SpCell and the Aerial UE altitude becomes lower than a threshold)p. 271

5.5.4.25  Event A4H1 (Neighbour becomes better than threshold1 and the Aerial UE altitude becomes higher than a threshold2)p. 272

5.5.4.26  Event A4H2 (Neighbour becomes better than threshold1 and the Aerial UE altitude becomes lower than a threshold2)p. 272

5.5.4.27  Event A5H1 (SpCell becomes worse than threshold1 and neighbour becomes better than threshold2 and the Aerial UE altitude becomes higher than a threshold3)p. 273

5.5.4.28  Event A5H2 (SpCell becomes worse than threshold1 and neighbour becomes better than threshold2 and the Aerial UE altitude becomes lower than a threshold3)p. 274

5.5.5  Measurement reportingp. 276

5.5.6  Location measurement indicationp. 287

5.5a  Logged Measurementsp. 288

5.5b  Application Layer Measurements in RRC_IDLE/RRC_INACTIVEp. 293

5.6  UE capabilitiesp. 294

5.7  Otherp. 299

5.7.1  DL information transferp. 299

5.7.1a  DL information transfer for MR-DCp. 300

5.7.2  UL information transferp. 301

5.7.2a  UL information transfer for MR-DCp. 302

5.7.2b  UL transfer of IRAT informationp. 302

5.7.3  SCG failure informationp. 303

5.7.3a  EUTRA SCG failure informationp. 308

5.7.3b  MCG failure informationp. 309

5.7.3c  Indirect path failure informationp. 312

5.7.4  UE Assistance Informationp. 314

5.7.4aVoid

5.7.5  Failure informationp. 338

5.7.6  DL message segment transferp. 339

5.7.7  UL message segment transferp. 339

5.7.8  Idle/inactive Measurementsp. 340

5.7.9  Mobility history informationp. 345

5.7.10  UE Informationp. 349

5.7.11Void

5.7.12  IAB Other Informationp. 367

5.7.13  RLM/BFD relaxationp. 369

5.7.14  UE Positioning Assistance Informationp. 370

5.7.15Void

5.7.16  Application layer measurement reportingp. 371

5.7.17  Derivation of pathloss reference for TA validation of SRS for Positioning transmission and CG-SDT in RRC_INACTIVEp. 373

5.7.18Void

5.7.19  Satellite switch with resynchronizationp. 374

5.7.20  Actions related to Transmission of SRS for Positioning in a validity area in RRC_INACTIVEp. 374

5.8  Sidelinkp. 375

5.8.1  Generalp. 375

5.8.2  Conditions for NR sidelink communication/discovery/positioning operationp. 375

5.8.3  Sidelink UE information for NR sidelink communication/discovery/positioningp. 376

5.8.4Void

5.8.5  Sidelink synchronisation information transmission for NR sidelink communication/discovery/positioningp. 390

5.8.5a  Sidelink synchronisation information transmission for V2X sidelink communicationp. 393

5.8.6  Sidelink synchronisation referencep. 393

5.8.7  Sidelink communication receptionp. 397

5.8.8  Sidelink communication transmissionp. 398

5.8.9  Sidelink RRC procedurep. 400

5.8.9.1  Sidelink RRC reconfigurationp. 400

5.8.9.1a  Sidelink radio bearer managementp. 408

5.8.9.1b  Sidelink Carrier Configurationp. 415

5.8.9.2  Sidelink UE capability transferp. 417

5.8.9.3  Sidelink radio link failure related actionsp. 418

5.8.9.3a  End-to-end PC5 connection failure related actions performed by L2 U2U Remote UEp. 419

5.8.9.3b  End-to-end PC5 connection failure/release related actions performed by L2 U2U Relay UEp. 419

5.8.9.4  Sidelink common control informationp. 420

5.8.9.5  Actions related to PC5-RRC connection release requested by upper layersp. 421

5.8.9.5a  Actions related to end-to-end PC5-RRC connection release performed by L2 U2U Remote UEp. 422

5.8.9.6  Sidelink UE assistance informationp. 422

5.8.9.7  PC5 Relay RLC channel management for L2 U2N or U2U relayp. 423

5.8.9.8  Remote UE informationp. 425

5.8.9.9  Uu message transfer in sidelinkp. 428

5.8.9.10  Notification Messagep. 429

5.8.9.11  UE information transfer on sidelinkp. 431

5.8.10  Sidelink measurementp. 432

5.8.11  Zone identity calculationp. 439

5.8.12  DFN derivation from GNSSp. 439

5.8.13  NR sidelink discoveryp. 440

5.8.14  NR sidelink U2N Relay UE operationp. 444

5.8.15  NR sidelink U2N Remote UE operationp. 445

5.8.16  NR sidelink U2U Relay UE operationp. 446

5.8.17  NR sidelink U2U Remote UE operationp. 447

5.8.18  NR sidelink positioningp. 449

5.9  MBS Broadcastp. 452

5.10  MBS multicast reception in RRC_INACTIVEp. 457


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