Tech-invite 3GPPspace IETFspace

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Content for TR 23.724 Word version: 16.1.0

1… 5… 6… 6.18… 6.36… 7…

6.36 Solution 36: CM-CONNECTED with RRC Inactive state for frequent small data transmission 6.37 Solution 37: Monitoring 6.38 Solution 38: eDRX RRC_INACTIVE STATE in 5GS 6.39 Solution 39: UE availability after DDN failure for multiple AFs 6.40 Solution 40: Infrequent small data transmission with temporary PDU session 6.41 Solution 41: Combining RRC-INACTIVE and 5G UP optimization 6.42 Solution 42: NAS based Redirection between Core Networks 6.43 Solution 43: RRC based Redirection between Core networks 6.44 Solution 44: C-IoT UE Core Network selection based on S-NSSAIs 6.45 Solution 45: Core Network Type and Node Selection for CIoT UE Using Explicit Indications 6.46 Solution 46: Network controlled UL data transmission delay 6.47 Solution 47: Improved Signalling/Data plane separation for Data over NAS small data solutions 6.48 Solution 48: NB-IoT idle mode inter-RAT mobility reusing EPS features 6.49 Solution 49: Support for RDS with infrequent small data transmission solutions #1, 2, 3 6.50 Solution 50: AF Notifications after DDN failure 6.51 Solution 51: Core Network steering via CN type selection rules configuration/reconfiguration 6.52 Solution 52: Inter-UE QoS differentiation based on retrieval of UE Context

6.36 Solution 36: CM-CONNECTED with RRC Inactive state for frequent small data transmission p. 215

6.36.1 Introduction p. 215

6.36.2 Functional Description p. 215

6.36.3 Support of EPC interworking p. 216

6.36.4 Procedures p. 216

6.36.4.1 Connection Inactive procedure p. 216

6.36.4.2 Connection Resume procedure p. 216

6.36.4.3 CN-initiated deactivation of UP connection when the UE is in RRC inactive state p. 217

6.36.5 Impacts on existing entities and interfaces p. 219

6.36.6 Evaluation p. 219

6.37 Solution 37: Monitoring p. 219

6.37.1 Introduction p. 219

6.37.2 Functional Description p. 219

6.37.3 Support of EPC interworking p. 220

6.37.3.1 General p. 220

6.37.3.2 Interworking with N26 interface p. 220

6.37.3.3 Interworking without N26 interface p. 220

6.37.4 Procedures p. 220

6.37.4.1 Monitoring events at AMF p. 220

6.37.4.2 Monitoring events at UDM p. 220

6.37.4.3 Monitoring events at PCF p. 220

6.37.4.3.1 General p. 220

6.37.4.3.2 PCF service operations information flow p. 221

6.37.5 Impacts on existing entities and interfaces p. 222

6.37.6 Evaluation p. 222

6.38 Solution 38: eDRX RRC_INACTIVE STATE in 5GS p. 222

6.38.1 Introduction p. 222

6.38.2 Functional Description p. 222

6.38.3 Support of EPC interworking p. 223

6.38.4 Procedures p. 223

6.38.5 Impacts on existing entities and interfaces p. 223

6.38.6 Evaluation p. 224

6.39 Solution 39: UE availability after DDN failure for multiple AFs p. 224

6.39.1 Introduction p. 224

6.39.2 Functional Description p. 224

6.39.3 Support of EPC interworking p. 224

6.39.4 Procedures p. 225

6.39.4.1 Event Configuration p. 225

6.39.4.2 Notification p. 226

6.39.5 Impacts on existing entities and interfaces p. 227

6.39.6 Evaluation p. 227

6.40 Solution 40: Infrequent small data transmission with temporary PDU session p. 228

6.40.1 Introduction p. 228

6.40.2 Functional Description p. 228

6.40.3 Support of EPC interworking p. 228

6.40.4 Procedures p. 229

6.40.5 Impacts on existing entities and interfaces p. 230

6.40.6 Evaluation p. 230

6.41 Solution 41: Combining RRC-INACTIVE and 5G UP optimization p. 231

6.41.1 Introduction p. 231

6.41.2 Functional Description p. 231

6.41.3 Support of EPC interworking p. 232

6.41.4 Procedures p. 232

6.41.5 Impacts on existing entities and interfaces p. 232

6.41.6 Evaluation p. 232

6.42 Solution 42: NAS based Redirection between Core Networks p. 232

6.42.1 Introduction p. 232

6.42.2 Functional Description p. 232

6.42.3 Support of EPC interworking p. 232

6.42.4 Procedures p. 233

6.42.4.1 Redirection using NAS indication p. 233

6.42.4.1.1 General p. 233

6.42.4.1.2 Redirection from EPC to 5GC network p. 233

6.42.4.1.3 Redirection from 5GC to EPC network p. 234

6.42.4.1.4 Interaction with Steering of Roaming p. 234

6.42.5 Impacts on existing entities and interfaces p. 234

6.42.6 Evaluation p. 235

6.43 Solution 43: RRC based Redirection between Core networks p. 235

6.43.1 Introduction p. 235

6.43.2 Functional Description p. 235

6.43.3 Support of EPC interworking p. 235

6.43.4 Procedures p. 235

6.43.4.1 Redirection using RRC indication p. 235

6.43.4.1.1 General p. 235

6.43.4.1.2 Redirection from EPC to 5GC network p. 236

6.43.4.1.3 Redirection from 5GC to EPC network p. 237

6.43.5 Impacts on existing entities and interfaces p. 237

6.43.6 Evaluation p. 238

6.44 Solution 44: C-IoT UE Core Network selection based on S-NSSAIs p. 238

6.44.1 Introduction p. 238

6.44.2 Functional Description p. 238

6.44.2.1 General p. 238

6.44.2.2 5G Cellular IoT support information based on S-NSSAIs p. 239

6.44.3 Support of EPC interworking p. 239

6.44.4 Procedures p. 239

6.44.5 Impacts on existing entities and interfaces p. 241

6.44.6 Evaluation p. 241

6.45 Solution 45: Core Network Type and Node Selection for CIoT UE Using Explicit Indications p. 241

6.45.1 Introduction p. 241

6.45.2 Functional Description p. 241

6.45.3 Support of EPC interworking p. 241

6.45.4 Procedures p. 241

6.45.4.1 Registration Procedure p. 241

6.45.4.2 Core network type selection at UE and AMF selection at RAN p. 242

6.45.5 Impacts on existing entities and interfaces p. 242

6.45.6 Evaluation p. 243

6.46 Solution 46: Network controlled UL data transmission delay p. 243

6.46.1 Introduction p. 243

6.46.2 Functional Description p. 243

6.46.3 Support of EPC interworking p. 243

6.46.4 Procedures p. 243

6.46.5 Impacts on existing entities and interfaces p. 244

6.46.6 Evaluation p. 245

6.47 Solution 47: Improved Signalling/Data plane separation for Data over NAS small data solutions p. 245

6.47.1 Introduction p. 245

6.47.2 Functional Description p. 245

6.47.3 Support of EPC interworking p. 245

6.47.4 Procedures p. 245

6.47.5 Impacts on existing entities and interfaces p. 246

6.47.6 Evaluation p. 246

6.48 Solution 48: NB-IoT idle mode inter-RAT mobility reusing EPS features p. 247

6.48.1 Introduction p. 247

6.48.2 Functional Description p. 247

6.48.2.1 General p. 247

6.48.2.2 UE Radio Capability Handling p. 247

6.48.2.3 PDU Session Handling p. 247

6.48.2.4 Determining RAT Type Change p. 247

6.48.3 Support of EPC interworking p. 248

6.48.4 Procedures p. 248

6.48.4.1 RAT change with mobility between 5GC and EPC with N26 p. 248

6.48.4.2 RAT change with mobility between 5GC and EPC without N26 p. 248

6.48.4.3 RAT change without mobility between 5GC and EPC p. 249

6.48.4.4 Determining RAT Type Change p. 249

6.48.5 Impacts on existing entities and interfaces p. 249

6.48.6 Evaluation p. 249

6.49 Solution 49: Support for RDS with infrequent small data transmission solutions #1, 2, 3 p. 250

6.49.1 Introduction p. 250

6.49.2 Functional Description p. 250

6.49.3 Support of EPC interworking p. 251

6.49.4 Procedures p. 252

6.49.5 Impacts on existing entities and interfaces p. 252

6.49.6 Evaluation p. 252

6.50 Solution 50: AF Notifications after DDN failure p. 252

6.50.1 Introduction p. 252

6.50.2 Functional Description p. 252

6.50.3 Support of EPC interworking p. 253

6.50.4 Procedures p. 253

6.50.4.1 Event Configuration p. 253

6.50.4.2 Notification p. 254

6.50.5 Impacts on existing entities and interfaces p. 255

6.50.6 Evaluation p. 256

6.51 Solution 51: Core Network steering via CN type selection rules configuration/reconfiguration p. 256

6.51.1 Introduction p. 256

6.51.2 Functional Description p. 256

6.51.3 Support of EPC interworking p. 258

6.51.4 Procedures p. 258

6.51.5 Impacts on existing entities and interfaces p. 258

6.51.6 Evaluation p. 258

6.52 Solution 52: Inter-UE QoS differentiation based on retrieval of UE Context p. 258

6.52.1 Introduction p. 258

6.52.2 Functional Description p. 259

6.52.3 Support of EPC interworking p. 259

6.52.4 Procedures p. 259

6.52.4.1 Provision of UE Context to AMF p. 259

6.52.4.2 Retrieval of UE Context from AMF and Inter-UE QoS differentiation p. 260

6.52.5 Impacts on existing entities and interfaces p. 261

6.52.6 Evaluation p. 261