Content for TS 38.331 Word version: 18.5.1
5 Procedures
5.1 General
5.2 System information
5.3 Connection control
5.4 Inter-RAT mobility
5.5 Measurements
5.5a Logged Measurements
5.5b Application Layer Measurements in RRC_IDLE/RRC_INACTIVE
5.6 UE capabilities
5.7 Other
5.8 Sidelink
5.9 MBS Broadcast
5.10 MBS multicast reception in RRC_INACTIVE
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5 Procedures p. 43
5.1 General p. 43
5.2 System information p. 44
5.2.1 Introduction p. 44
5.2.2 System information acquisition p. 45
5.2.2.1 General UE requirements p. 45
5.2.2.2 SIB validity and need to (re)-acquire SIB p. 46
5.2.2.3 Acquisition of System Information p. 49
5.2.2.3.1 Acquisition of MIB and SIB1 p. 49
5.2.2.3.2 Acquisition of an SI message p. 50
5.2.2.3.3 Request for on demand system information p. 51
5.2.2.3.3a Request for on demand positioning system information p. 53
5.2.2.3.4 Actions related to transmission of RRCSystemInfoRequest message p. 55
5.2.2.3.5 Acquisition of SIB(s) or posSIB(s) in RRC_CONNECTED p. 55
5.2.2.3.6 Actions related to transmission of DedicatedSIBRequest message p. 56
5.2.2.4 Actions upon receipt of System Information p. 57
5.2.2.4.1 Actions upon reception of the MIB p. 57
5.2.2.4.2 Actions upon reception of the SIB1 p. 57
5.2.2.4.3 Actions upon reception of SIB2 p. 64
5.2.2.4.4 Actions upon reception of SIB3 p. 65
5.2.2.4.5 Actions upon reception of SIB4 p. 65
5.2.2.4.6 Actions upon reception of SIB5 p. 67
5.2.2.4.7 Actions upon reception of SIB6 p. 67
5.2.2.4.8 Actions upon reception of SIB7 p. 67
5.2.2.4.9 Actions upon reception of SIB8 p. 67
5.2.2.4.10 Actions upon reception of SIB9 p. 68
5.2.2.4.11 Actions upon reception of SIB10 p. 69
5.2.2.4.12 Actions upon reception of SIB11 p. 69
5.2.2.4.13 Actions upon reception of SIB12 p. 69
5.2.2.4.14 Actions upon reception of SIB13 p. 71
5.2.2.4.15 Actions upon reception of SIB14 p. 71
5.2.2.4.16 Actions upon reception of SIBpos p. 71
5.2.2.4.17 Actions upon reception of SIB15 p. 71
5.2.2.4.18 Actions upon reception of SIB16 p. 71
5.2.2.4.19 Actions upon reception of SIB17 p. 71
5.2.2.4.19a Actions upon reception of SIB17bis p. 71
5.2.2.4.20 Actions upon reception of SIB18 p. 72
5.2.2.4.21 Actions upon reception of SIB19 p. 72
5.2.2.4.22 Actions upon reception of SIB20 p. 72
5.2.2.4.23 Actions upon reception of SIB21 p. 72
5.2.2.4.24 Actions upon reception of SIB22 p. 72
5.2.2.4.25 Actions upon reception of SIB23 p. 72
5.2.2.4.26 Actions upon reception of SIB24 p. 73
5.2.2.4.27 Actions upon reception of SIB25 p. 73
5.2.2.5 Essential system information missing p. 73
5.2.2.6 T430 expiry p. 73
5.3 Connection control p. 73
5.3.1 Introduction p. 73
5.3.1.1 RRC connection control p. 73
5.3.1.2 AS Security p. 74
5.3.2 Paging p. 75
5.3.2.1 General p. 75
5.3.2.2 Initiation p. 76
5.3.2.3 Reception of the Paging message by the UE or PagingRecord by the L2 U2N Remote UE p. 76
5.3.3 RRC connection establishment p. 78
5.3.3.1 General p. 78
5.3.3.1a Conditions for establishing RRC Connection for NR sidelink communication/discovery/V2X sidelink communication/MP operation p. 79
5.3.3.1b Void
5.3.3.2 Initiation p. 80
5.3.3.3 Actions related to transmission of RRCSetupRequest message p. 80
5.3.3.4 Reception of the RRCSetup by the UE p. 81
5.3.3.5 Reception of the RRCReject by the UE p. 86
5.3.3.6 Cell re-selection or cell selection or relay (re)selection while T390, T300 or T302 is running (UE in RRC_IDLE) p. 86
5.3.3.7 T300 expiry p. 87
5.3.3.8 Abortion of RRC connection establishment p. 89
5.3.4 Initial AS security activation p. 89
5.3.4.1 General p. 89
5.3.4.2 Initiation p. 89
5.3.4.3 Reception of the SecurityModeCommand by the UE p. 89
5.3.5 RRC reconfiguration p. 90
5.3.5.1 General p. 90
5.3.5.2 Initiation p. 92
5.3.5.3 Reception of an RRCReconfiguration by the UE p. 92
5.3.5.4 Secondary cell group release p. 109
5.3.5.5 Cell Group configuration p. 110
5.3.5.5.1 General p. 110
5.3.5.5.2 Reconfiguration with sync p. 111
5.3.5.5.3 RLC bearer release p. 113
5.3.5.5.4 RLC bearer addition/modification p. 114
5.3.5.5.5 MAC entity configuration p. 115
5.3.5.5.6 RLF Timers & Constants configuration p. 115
5.3.5.5.7 SpCell Configuration p. 116
5.3.5.5.8 SCell Release p. 117
5.3.5.5.9 SCell Addition/Modification p. 117
5.3.5.5.10 BH RLC channel release p. 118
5.3.5.5.11 BH RLC channel addition/modification p. 118
5.3.5.5.12 Uu Relay RLC channel release p. 118
5.3.5.5.13 Uu Relay RLC channel addition/modification p. 118
5.3.5.5.14 NCR-Fwd configuration p. 119
5.3.5.6 Radio Bearer configuration p. 119
5.3.5.6.1 General p. 119
5.3.5.6.2 SRB release p. 120
5.3.5.6.3 SRB addition/modification p. 120
5.3.5.6.4 DRB release p. 122
5.3.5.6.5 DRB addition/modification p. 122
5.3.5.6.6 Multicast MRB release p. 125
5.3.5.6.7 Multicast MRB addition/modification p. 125
5.3.5.7 AS Security key update p. 126
5.3.5.8 Reconfiguration failure p. 127
5.3.5.8.1 Void
5.3.5.8.2 Inability to comply with RRCReconfiguration p. 127
5.3.5.8.3 T304 expiry (Reconfiguration with sync Failure) or T420 expiry (Path switch failure) p. 130
5.3.5.9 Other configuration p. 131
5.3.5.9a MUSIM gap configuration p. 136
5.3.5.10 MR-DC release p. 137
5.3.5.11 Full configuration p. 138
5.3.5.12 BAP configuration p. 140
5.3.5.12a IAB Other Configuration p. 140
5.3.5.13 Conditional Reconfiguration p. 142
5.3.5.13.1 General p. 142
5.3.5.13.2 Conditional reconfiguration removal p. 143
5.3.5.13.3 Conditional reconfiguration addition/modification p. 143
5.3.5.13.4 Conditional reconfiguration evaluation p. 144
5.3.5.13.4a Conditional reconfiguration evaluation of SN initiated inter-SN CPC for EN-DC p. 146
5.3.5.13.5 Conditional reconfiguration execution p. 147
5.3.5.13.6 Subsequent CPAC reference configuration addition/removal p. 148
5.3.5.13.7 sk-Counter configuration addition/modification/removal p. 148
5.3.5.13.8 Subsequent CPAC execution p. 148
5.3.5.13a SCG activation p. 151
5.3.5.13b SCG deactivation p. 152
5.3.5.13b1 SCG activation without SN message p. 152
5.3.5.13c FR2 UL gap configuration p. 152
5.3.5.13d Application layer measurement configuration p. 153
5.3.5.14 Sidelink dedicated configuration p. 155
5.3.5.15 L2 U2N or U2U Relay UE configuration p. 157
5.3.5.15.1 General p. 157
5.3.5.15.2 L2 U2N or U2U Remote UE Release p. 157
5.3.5.15.3 L2 U2N or U2U Remote UE Addition/Modification p. 158
5.3.5.16 L2 U2N or U2U Remote UE configuration p. 159
5.3.5.17 MP configuration p. 160
5.3.5.17.1 Introduction p. 160
5.3.5.17.2 Configuration of SL indirect path p. 160
5.3.5.17.2.1 General p. 160
5.3.5.17.2.2 SL indirect path specific configuration p. 161
5.3.5.17.2.3 T421 expiry (Indirect path addition/change failure) p. 161
5.3.5.17.3 Configuration of N3C indirect path p. 161
5.3.5.18 LTM configuration and execution p. 163
5.3.5.18.1 LTM configuration p. 163
5.3.5.18.2 LTM candidate configuration release p. 164
5.3.5.18.3 LTM candidate configuration addition/modification p. 164
5.3.5.18.4 Void
5.3.5.18.5 Void
5.3.5.18.6 LTM cell switch execution p. 164
5.3.5.18.7 LTM configuration release p. 167
5.3.5.19 T348 expiry p. 167
5.3.6 Counter check p. 168
5.3.6.1 General p. 168
5.3.6.2 Initiation p. 168
5.3.6.3 Reception of the CounterCheck message by the UE p. 168
5.3.7 RRC connection re-establishment p. 169
5.3.7.1 General p. 169
5.3.7.2 Initiation p. 169
5.3.7.3 Actions following cell selection while T311 is running p. 173
5.3.7.3a Actions following relay selection while T311 is running p. 176
5.3.7.4 Actions related to transmission of RRCReestablishmentRequest message p. 176
5.3.7.5 Reception of the RRCReestablishment by the UE p. 178
5.3.7.6 T311 expiry p. 180
5.3.7.7 T301 expiry or selected cell/L2 U2N Relay UE no longer suitable p. 180
5.3.7.8 Reception of the RRCSetup by the UE p. 181
5.3.8 RRC connection release p. 181
5.3.8.1 General p. 181
5.3.8.2 Initiation p. 181
5.3.8.3 Reception of the RRCRelease by the UE p. 181
5.3.8.4 T320 expiry p. 187
5.3.8.5 UE actions upon the expiry of DataInactivityTimer p. 187
5.3.8.6 T346g expiry p. 187
5.3.9 RRC connection release requested by upper layers p. 187
5.3.9.1 General p. 187
5.3.9.2 Initiation p. 187
5.3.10 Radio link failure related actions p. 187
5.3.10.1 Detection of physical layer problems in RRC_CONNECTED p. 187
5.3.10.2 Recovery of physical layer problems p. 188
5.3.10.3 Detection of radio link failure p. 188
5.3.10.4 RLF cause determination p. 191
5.3.10.5 RLF report content determination p. 191
5.3.11 UE actions upon going to RRC_IDLE p. 195
5.3.12 UE actions upon PUCCH/SRS release request p. 198
5.3.13 RRC connection resume p. 198
5.3.13.1 General p. 198
5.3.13.1a Conditions for resuming RRC Connection for NR sidelink communication/positioning/discovery/V2X sidelink communication p. 199
5.3.13.1b Conditions for initiating SDT p. 200
5.3.13.1c Void
5.3.13.1d Conditions for resuming RRC connection for multicast reception p. 200
5.3.13.2 Initiation p. 201
5.3.13.3 Actions related to transmission of RRCResumeRequest or RRCResumeRequest1 message p. 205
5.3.13.4 Reception of the RRCResume by the UE p. 207
5.3.13.5 Handling of failure to resume RRC Connection p. 215
5.3.13.6 Cell re-selection or cell selection or L2 U2N relay (re)selection while T390, T319 or T302 is running or SDT procedure is ongoing (UE in RRC_INACTIVE) or SRS transmission in RRC_INACTIVE is configured p. 217
5.3.13.7 Reception of the RRCSetup by the UE p. 217
5.3.13.8 RNA update p. 217
5.3.13.9 Reception of the RRCRelease by the UE p. 218
5.3.13.10 Reception of the RRCReject by the UE p. 218
5.3.13.11 Inability to comply with RRCResume p. 218
5.3.13.12 Inter RAT cell reselection p. 218
5.3.14 Unified Access Control p. 219
5.3.14.1 General p. 219
5.3.14.2 Initiation p. 219
5.3.14.3 Void
5.3.14.4 T302, T390 expiry or stop (Barring alleviation) p. 221
5.3.14.5 Access barring check p. 221
5.3.15 RRC connection reject p. 222
5.4 Inter-RAT mobility p. 223
5.4.1 Introduction p. 223
5.4.2 Handover to NR p. 223
5.4.2.1 General p. 223
5.4.2.2 Initiation p. 224
5.4.2.3 Reception of the RRCReconfiguration by the UE p. 224
5.4.3 Mobility from NR p. 224
5.5 Measurements p. 227
5.5.1 Introduction p. 227
5.5.2 Measurement configuration p. 230
5.5.2.1 General p. 230
5.5.2.2 Measurement identity removal p. 231
5.5.2.3 Measurement identity addition/modification p. 232
5.5.2.4 Measurement object removal p. 233
5.5.2.5 Measurement object addition/modification p. 233
5.5.2.6 Reporting configuration removal p. 235
5.5.2.7 Reporting configuration addition/modification p. 236
5.5.2.8 Quantity configuration p. 236
5.5.2.9 Measurement gap configuration p. 236
5.5.2.10 Reference signal measurement timing configuration p. 238
5.5.2.10a RSSI measurement timing configuration p. 239
5.5.2.11 Measurement gap sharing configuration p. 240
5.5.2.12 Effective measurement window configuration p. 240
5.5.3 Performing measurements p. 241
5.5.3.1 General p. 241
5.5.3.2 Layer 3 filtering p. 246
5.5.3.3 Derivation of cell measurement results p. 247
5.5.3.3a Derivation of layer 3 beam filtered measurement p. 248
5.5.3.4 Derivation of L2 U2N Relay UE measurement results p. 248
5.5.4 Measurement report triggering p. 248
5.5.4.1 General p. 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
5.5.4.13 Void
5.5.4.14 Void
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 reporting p. 276
5.5.5.1 General p. 276
5.5.5.2 Reporting of beam measurement information p. 285
5.5.5.3 Sorting of cell measurement results p. 286
5.5.6 Location measurement indication p. 287
5.5a Logged Measurements p. 288
5.5a.1 Logged Measurement Configuration p. 288
5.5a.1.1 General p. 288
5.5a.1.2 Initiation p. 289
5.5a.1.3 Reception of the LoggedMeasurementConfiguration by the UE p. 289
5.5a.1.4 T330 expiry p. 289
5.5a.2 Release of Logged Measurement Configuration p. 290
5.5a.2.1 General p. 290
5.5a.2.2 Initiation p. 290
5.5a.3 Measurements logging p. 290
5.5a.3.1 General p. 290
5.5a.3.2 Initiation p. 290
5.5b Application Layer Measurements in RRC_IDLE/RRC_INACTIVE p. 293
5.5b.1 Handling of Application Layer Measurements in RRC_IDLE/RRC_INACTIVE p. 293
5.5b.1.1 General p. 293
5.5b.1.2 Initiation p. 293
5.6 UE capabilities p. 294
5.6.1 UE capability transfer p. 294
5.7 Other p. 299
5.7.1 DL information transfer p. 299
5.7.1.1 General p. 299
5.7.1.2 Initiation p. 299
5.7.1.3 Reception of the DLInformationTransfer by the UE p. 299
5.7.1a DL information transfer for MR-DC p. 300
5.7.1a.1 General p. 300
5.7.1a.2 Initiation p. 300
5.7.1a.3 Actions related to reception of DLInformationTransferMRDC message p. 300
5.7.2 UL information transfer p. 301
5.7.2.1 General p. 301
5.7.2.2 Initiation p. 301
5.7.2.3 Actions related to transmission of ULInformationTransfer message p. 301
5.7.2.4 Failure to deliver ULInformationTransfer message p. 301
5.7.2a UL information transfer for MR-DC p. 302
5.7.2a.1 General p. 302
5.7.2a.2 Initiation p. 302
5.7.2a.3 Actions related to transmission of ULInformationTransferMRDC message p. 302
5.7.2b UL transfer of IRAT information p. 302
5.7.2b.1 General p. 302
5.7.2b.2 Initiation p. 303
5.7.2b.3 Actions related to transmission of ULInformationTransferIRAT message p. 303
5.7.3 SCG failure information p. 303
5.7.3.1 General p. 303
5.7.3.2 Initiation p. 303
5.7.3.3 Failure type determination for (NG)EN-DC p. 304
5.7.3.4 Setting the contents of MeasResultSCG-Failure p. 305
5.7.3.5 Actions related to transmission of SCGFailureInformation message p. 306
5.7.3a EUTRA SCG failure information p. 308
5.7.3a.1 General p. 308
5.7.3a.2 Initiation p. 309
5.7.3a.3 Actions related to transmission of SCGFailureInformationEUTRA message p. 309
5.7.3b MCG failure information p. 309
5.7.3b.1 General p. 309
5.7.3b.2 Initiation p. 309
5.7.3b.3 Failure type determination p. 310
5.7.3b.4 Actions related to transmission of MCGFailureInformation message p. 310
5.7.3b.5 T316 expiry p. 312
5.7.3c Indirect path failure information p. 312
5.7.3c.1 General p. 312
5.7.3c.2 Initiation p. 313
5.7.3c.3 Failure type determination p. 313
5.7.3c.4 Actions related to transmission of IndirectPathFailureInformation message p. 314
5.7.4 UE Assistance Information p. 314
5.7.4.1 General p. 314
5.7.4.2 Initiation p. 315
5.7.4.3 Actions related to transmission of UEAssistanceInformation message p. 324
5.7.4.3a Setting the contents of OverheatingAssistance IE p. 336
5.7.4.4 Relaxed measurement criterion for a stationary (e)RedCap UE p. 337
5.7.4a Void
5.7.5 Failure information p. 338
5.7.5.1 General p. 338
5.7.5.2 Initiation p. 338
5.7.5.3 Actions related to transmission of FailureInformation message p. 338
5.7.6 DL message segment transfer p. 339
5.7.6.1 General p. 339
5.7.6.2 Initiation p. 339
5.7.6.3 Reception of DLDedicatedMessageSegment by the UE p. 339
5.7.7 UL message segment transfer p. 339
5.7.7.1 General p. 339
5.7.7.2 Initiation p. 339
5.7.7.3 Actions related to transmission of ULDedicatedMessageSegment message p. 340
5.7.8 Idle/inactive Measurements p. 340
5.7.8.1 General p. 340
5.7.8.1a Measurement configuration p. 340
5.7.8.1b Measurement configuration (reselection measurements) p. 341
5.7.8.2 Void
5.7.8.2a Performing measurements p. 342
5.7.8.3 T331 expiry or stop p. 345
5.7.8.4 Cell re-selection or cell selection while T331 is running p. 345
5.7.9 Mobility history information p. 345
5.7.9.1 General p. 345
5.7.9.2 Initiation p. 345
5.7.9.3 Release of Mobility History Information p. 349
5.7.10 UE Information p. 349
5.7.10.1 General p. 349
5.7.10.2 Initiation p. 349
5.7.10.3 Reception of the UEInformationRequest message p. 349
5.7.10.4 Actions for the Random Access report determination p. 354
5.7.10.5 RA information determination p. 356
5.7.10.6 Actions for the successful handover report determination p. 360
5.7.10.7 Actions for the successful PSCell change or addition report determination p. 364
5.7.11 Void
5.7.12 IAB Other Information p. 367
5.7.12.1 General p. 367
5.7.12.2 Initiation p. 367
5.7.12.3 Actions related to transmission of IABOtherInformation message p. 367
5.7.13 RLM/BFD relaxation p. 369
5.7.13.0 General p. 369
5.7.13.1 Relaxed measurement criterion for low mobility p. 369
5.7.13.2 Relaxed measurement criterion for good serving cell quality p. 369
5.7.14 UE Positioning Assistance Information p. 370
5.7.14.1 General p. 370
5.7.14.2 Initiation p. 370
5.7.14.3 Actions related to transmission of UEPositioningAssistanceInfo message p. 370
5.7.15 Void
5.7.16 Application layer measurement reporting p. 371
5.7.16.1 General p. 371
5.7.16.2 Initiation p. 371
5.7.17 Derivation of pathloss reference for TA validation of SRS for Positioning transmission and CG-SDT in RRC_INACTIVE p. 373
5.7.18 Void
5.7.19 Satellite switch with resynchronization p. 374
5.7.20 Actions related to Transmission of SRS for Positioning in a validity area in RRC_INACTIVE p. 374
5.8 Sidelink p. 375
5.8.1 General p. 375
5.8.2 Conditions for NR sidelink communication/discovery/positioning operation p. 375
5.8.3 Sidelink UE information for NR sidelink communication/discovery/positioning p. 376
5.8.3.1 General p. 376
5.8.3.2 Initiation p. 377
5.8.3.3 Actions related to transmission of SidelinkUEInformationNR message p. 383
5.8.4 Void
5.8.5 Sidelink synchronisation information transmission for NR sidelink communication/discovery/positioning p. 390
5.8.5a Sidelink synchronisation information transmission for V2X sidelink communication p. 393
5.8.5a.1 General p. 393
5.8.5a.2 Initiation p. 393
5.8.6 Sidelink synchronisation reference p. 393
5.8.6.1 General p. 393
5.8.6.2 Selection and reselection of synchronisation reference p. 393
5.8.6.2a Sidelink synchronization reference priority group order p. 395
5.8.6.2b Sidelink synchronization reference search p. 396
5.8.6.3 Sidelink communication transmission reference cell selection p. 397
5.8.7 Sidelink communication reception p. 397
5.8.8 Sidelink communication transmission p. 398
5.8.9 Sidelink RRC procedure p. 400
5.8.9.1 Sidelink RRC reconfiguration p. 400
5.8.9.1.1 General p. 400
5.8.9.1.2 Actions related to transmission of RRCReconfigurationSidelink message p. 402
5.8.9.1.3 Reception of an RRCReconfigurationSidelink by the UE p. 405
5.8.9.1.4 Void
5.8.9.1.5 Void
5.8.9.1.6 Void
5.8.9.1.7 Void
5.8.9.1.8 Reception of an RRCReconfigurationFailureSidelink by the UE p. 407
5.8.9.1.9 Reception of an RRCReconfigurationCompleteSidelink by the UE p. 407
5.8.9.1.10 Sidelink reset configuration p. 408
5.8.9.1a Sidelink radio bearer management p. 408
5.8.9.1a.1 Sidelink DRB release p. 408
5.8.9.1a.1.1 Sidelink DRB release conditions p. 408
5.8.9.1a.1.2 Sidelink DRB release operations p. 408
5.8.9.1a.2 Sidelink DRB addition/modification p. 409
5.8.9.1a.2.1 Sidelink DRB addition/modification conditions p. 409
5.8.9.1a.2.2 Sidelink DRB addition/modification operations p. 409
5.8.9.1a.3 Sidelink SRB release p. 411
5.8.9.1a.4 Sidelink SRB addition p. 412
5.8.9.1a.5 Additional Sidelink RLC Bearer release p. 412
5.8.9.1a.5.1 Additional Sidelink RLC Bearer release conditions p. 412
5.8.9.1a.5.2 Additional Sidelink RLC Bearer release operation p. 413
5.8.9.1a.6 Additional Sidelink RLC Bearer addition/modification p. 413
5.8.9.1b Sidelink Carrier Configuration p. 415
5.8.9.1b.1 Sidelink Carrier Release p. 415
5.8.9.1b.1.1 Sidelink Carrier Release Condition p. 415
5.8.9.1b.1.2 Sidelink Carrier Release Operation p. 415
5.8.9.1b.2 Sidelink Carrier Addition p. 416
5.8.9.2 Sidelink UE capability transfer p. 417
5.8.9.2.1 General p. 417
5.8.9.2.2 Initiation p. 417
5.8.9.2.3 Actions related to transmission of the UECapabilityEnquirySidelink by the UE p. 417
5.8.9.2.4 Actions related to reception of the UECapabilityEnquirySidelink by the UE p. 417
5.8.9.3 Sidelink radio link failure related actions p. 418
5.8.9.3a End-to-end PC5 connection failure related actions performed by L2 U2U Remote UE p. 419
5.8.9.3b End-to-end PC5 connection failure/release related actions performed by L2 U2U Relay UE p. 419
5.8.9.4 Sidelink common control information p. 420
5.8.9.4.1 General p. 420
5.8.9.4.2 Actions related to reception of MasterInformationBlockSidelink message p. 420
5.8.9.4.3 Transmission of MasterInformationBlockSidelink message p. 420
5.8.9.5 Actions related to PC5-RRC connection release requested by upper layers p. 421
5.8.9.5a Actions related to end-to-end PC5-RRC connection release performed by L2 U2U Remote UE p. 422
5.8.9.6 Sidelink UE assistance information p. 422
5.8.9.6.1 General p. 422
5.8.9.6.2 Initiation p. 422
5.8.9.6.3 Actions related to reception of UEAssistanceInformationSidelink message p. 423
5.8.9.7 PC5 Relay RLC channel management for L2 U2N or U2U relay p. 423
5.8.9.7.0 Deriviation of PC5 Relay RLC channel configuration p. 423
5.8.9.7.1 PC5 Relay RLC channel release p. 423
5.8.9.7.2 PC5 Relay RLC channel addition/modification p. 424
5.8.9.8 Remote UE information p. 425
5.8.9.8.1 General p. 425
5.8.9.8.2 Actions related to transmission of RemoteUEInformationSidelink message p. 425
5.8.9.8.3 Reception of RemoteUEInformationSidelink message by the L2 U2N/U2U Relay UE p. 426
5.8.9.9 Uu message transfer in sidelink p. 428
5.8.9.9.1 General p. 428
5.8.9.9.2 Actions related to transmission of UuMessageTransferSidelink message p. 428
5.8.9.9.3 Reception of the UuMessageTransferSidelink p. 428
5.8.9.10 Notification Message p. 429
5.8.9.10.1 General p. 429
5.8.9.10.2 Initiation p. 429
5.8.9.10.3 Actions related to transmission of NotificationMessageSidelink message p. 429
5.8.9.10.4 Actions related to reception of NotificationMessageSidelink message p. 430
5.8.9.11 UE information transfer on sidelink p. 431
5.8.9.11.1 General p. 431
5.8.9.11.2 Actions related to transmission of the UEInformationRequestSidelink by the UE p. 431
5.8.9.11.3 Actions related to reception of the UEInformationRequestSidelink by the UE p. 431
5.8.9.11.4 Actions related to reception of the UEInformationResponseSidelink by the UE p. 432
5.8.10 Sidelink measurement p. 432
5.8.10.1 Introduction p. 432
5.8.10.2 Sidelink measurement configuration p. 433
5.8.10.2.1 General p. 433
5.8.10.2.2 Sidelink measurement identity removal p. 433
5.8.10.2.3 Sidelink measurement identity addition/modification p. 434
5.8.10.2.4 Sidelink measurement object removal p. 434
5.8.10.2.5 Sidelink measurement object addition/modification p. 434
5.8.10.2.6 Sidelink reporting configuration removal p. 435
5.8.10.2.7 Sidelink reporting configuration addition/modification p. 435
5.8.10.2.8 Sidelink quantity configuration p. 435
5.8.10.3 Performing NR sidelink measurements p. 436
5.8.10.4 Sidelink measurement report triggering p. 436
5.8.10.4.1 General p. 436
5.8.10.4.2 Event S1 (Serving becomes better than threshold) p. 437
5.8.10.4.3 Event S2 (Serving becomes worse than threshold) p. 438
5.8.10.5 Sidelink measurement reporting p. 438
5.8.10.5.1 General p. 438
5.8.11 Zone identity calculation p. 439
5.8.12 DFN derivation from GNSS p. 439
5.8.13 NR sidelink discovery p. 440
5.8.13.1 General p. 440
5.8.13.2 NR sidelink discovery monitoring p. 440
5.8.13.3 NR sidelink discovery transmission p. 441
5.8.14 NR sidelink U2N Relay UE operation p. 444
5.8.15 NR sidelink U2N Remote UE operation p. 445
5.8.15.1 General p. 445
5.8.15.2 NR Sidelink U2N Remote UE threshold conditions p. 445
5.8.15.3 Selection and reselection of NR sidelink U2N Relay UE p. 445
5.8.16 NR sidelink U2U Relay UE operation p. 446
5.8.16.1 General p. 446
5.8.16.2 NR sidelink U2U Relay UE threshold conditions p. 446
5.8.16.3 Neighbor UE(s) in proximity conditions p. 447
5.8.17 NR sidelink U2U Remote UE operation p. 447
5.8.17.1 General p. 447
5.8.17.2 NR Sidelink U2U Remote UE threshold conditions p. 447
5.8.17.3 Conditions for selection and reselection of NR sidelink U2U Relay UE p. 448
5.8.17.4 Actions related to selection and reselection of NR sidelink U2U Relay UE p. 449
5.8.18 NR sidelink positioning p. 449
5.9 MBS Broadcast p. 452
5.9.1 Introduction p. 452
5.9.1.1 General p. 452
5.9.1.2 MCCH scheduling p. 452
5.9.1.3 MCCH information validity and notification of changes p. 453
5.9.2 MCCH information acquisition p. 453
5.9.2.1 General p. 453
5.9.2.2 Initiation p. 453
5.9.2.3 MCCH information acquisition by the UE p. 453
5.9.2.4 Actions upon reception of the MBSBroadcastConfiguration message p. 454
5.9.3 Broadcast MRB configuration p. 454
5.9.3.1 General p. 454
5.9.3.2 Initiation p. 454
5.9.3.3 Broadcast MRB establishment p. 454
5.9.3.4 Broadcast MRB release p. 455
5.9.4 MBS Interest Indication p. 455
5.10 MBS multicast reception in RRC_INACTIVE p. 457
5.10.1 Introduction p. 457
5.10.1.1 General p. 457
5.10.1.2 Multicast MCCH scheduling p. 458
5.10.1.3 Multicast MCCH information validity and notification of changes p. 458
5.10.2 Multicast MCCH information acquisition p. 459
5.10.2.1 General p. 459
5.10.2.2 Initiation p. 459
5.10.2.3 Multicast MCCH information acquisition by the UE p. 459
5.10.2.4 Actions upon reception of the MBSMulticastConfiguration message p. 460
5.10.3 MRB configuration p. 460
5.10.3.1 General p. 460
5.10.3.2 Multicast MRB establishment p. 460
5.10.3.3 Multicast MRB release p. 460
