Content for TR 23.799 Word version: 14.0.0
4 Architectural Requirements, Assumptions and Principles p. 21
4.1 High level Architectural Requirements p. 21
4.2 Architectural Assumptions p. 23
4.3 Architectural Principles p. 24
5 Key Issues p. 24
5.1 Key issue 1: Support of network slicing p. 24
5.1.1 Description p. 24
5.1.2 Work Tasks p. 25
5.2 Key issue 2: QoS framework p. 25
5.2.1 Description p. 25
5.2.2 Work Tasks p. 27
5.3 Key Issue 3: Mobility management framework p. 27
5.3.1 Description p. 27
5.3.2 Work Tasks p. 30
5.4 Key issue 4: Session management p. 31
5.4.1 Description p. 31
5.4.2 Work Tasks p. 32
5.5 Void
5.6 Key issue 6: Support for session and service continuity and efficient user plane path p. 32
5.6.1 Description p. 32
5.6.2 Work Tasks p. 33
5.7 Key issue 7: Network function granularity and interactions between them p. 34
5.7.1 Description p. 34
5.7.2 Work Tasks p. 35
5.8 Key issue 8: Next Generation core and access - functional division and interface p. 35
5.8.1 Description p. 35
5.8.2 Work Tasks p. 36
5.9 Key Issue 9: 3GPP architecture impacts to support network capability exposure and context information awareness p. 36
5.9.1 Description p. 36
5.10 Key issue 10: Policy Framework p. 37
5.10.1 Description p. 37
5.10.2 Work Tasks p. 39
5.11 Key issue 11: Charging p. 40
5.11.1 Description p. 40
5.12 Key issue 12: Security framework p. 41
5.12.1 Description p. 41
5.12.2 Work Tasks p. 42
5.13 Key issue 13: Broadcast/Multicast Capabilities p. 42
5.13.1 Description p. 42
5.14 Key Issue 14: Support for Off-Network Communication p. 43
5.14.1 Description p. 43
5.15 Key Issue 15: NextGen core support for IMS p. 43
5.15.1 Description p. 43
5.16 Key Issue 16: 3GPP system aspects to support the connectivity of remote UEs via relay UEs p. 43
5.16.1 Description p. 43
5.17 Key Issue 17: 3GPP architecture impacts to support network discovery and selection p. 44
5.17.1 Description p. 44
5.17.2 Work Tasks p. 45
5.18 Key Issue 18: Interworking and Migration p. 45
5.18.1 Description p. 45
5.18.1.1 Interworking and migration principles p. 45
5.18.1.2 Assumptions on UE capabilities p. 46
5.18.1.3 Interworking and migration scenarios within an operator p. 46
5.18.1.4 Interworking scenarios on roaming p. 46
5.18.1.5 UE compatibility p. 46
5.18.2 Work Tasks p. 47
5.19 Key Issue 19: Architecture impacts when using virtual environments p. 47
5.19.1 Description p. 47
5.19.2 Issues to be addressed p. 48
5.20 Key issue 20: Traffic Steering, Switching and Splitting between 3GPP and non-3GPP Accesses p. 48
5.20.1 Description p. 48
5.20.2 Work Tasks p. 49
5.21 Key Issue 21: Minimal connectivity within extreme rural deployments p. 49
5.21.1 Description p. 49
5.22 Key Issue 22: Support of "5G connectivity via satellite" use case p. 50
5.22.1 Description p. 50
5.22.2 Work Tasks p. 50
