Content for TR 23.786 Word version: 16.1.0
5 Key Issues
6 Solutions
7 Conclusions
A eV2X Architecture variants
B Solutions for broadcast/multicast/group delivery over Uu
$ Change History
5 Key Issues p. 13
5.1 Key Issue #1: Support of eV2X Group Communication p. 13
5.2 Key Issue #2: 3GPP PC5 RAT selection for a V2X application p. 13
5.3 Key Issue #3: QoS Support for eV2X over Uu interface p. 14
5.4 Key Issue #4: Support of PC5 QoS framework enhancement for eV2X p. 15
5.5 Key Issue #5: Service Authorization and Provisioning to UE for eV2X communications over PC5 reference point p. 15
5.6 Key Issue #6: Service Authorization to NG-RAN for eV2X communications over PC5 reference point p. 16
5.7 Key Issue #7: Network Slicing for eV2X Services p. 16
5.8 Key Issue #8: Support of edge computing p. 16
5.9 Key Issue #9: Support of unicast/multicast for sensor sharing over PC5 p. 17
5.10 Key Issue #10: eV2X message transmission and reception p. 18
5.11 Key Issue #11: Service Authorization and Provisioning to UE over NG-Uu reference point p. 18
5.12 Key Issue #12: System migration and interworking for eV2X p. 18
5.13 Key Issue #13: Support NR based PC5 communication when UE connects to EPC p. 19
5.14 Key Issue #14: Support of broadcast over NG-Uu p. 19
5.15 Key Issue #15: Enhancements to assist Application Adjustment p. 20
6 Solutions p. 20
6.1 Solution #1: Solution for Group Communication for eV2X p. 20
6.1.1 Functional Description p. 20
6.1.2 Procedures p. 21
6.1.3 Impact on existing entities and interfaces p. 21
6.1.4 Topics for further study p. 21
6.1.5 Conclusions p. 21
6.2 Solution #2: QoS Support for eV2X over Uu interface p. 21
6.3 Solution #3: Service Authorization and Provisioning to UE for eV2X communications over PC5 and NG-Uu reference points p. 23
6.3.1 Functional Description p. 23
6.3.2 Procedures p. 24
6.3.2a Option of UE triggered V2X Policy provisioning procedure p. 24
6.3.3 Impact on existing entities and interfaces p. 25
6.3.4 Topics for further study p. 25
6.3.5 Conclusions p. 25
6.4 Solution #4: Reusing solution of TS 23.285 [5] for Key Issue #5 p. 26
6.4.1 Functional Description p. 26
6.4.2 Procedures p. 26
6.4.3 Impact on existing entities and interfaces p. 26
6.4.4 Topics for further study p. 27
6.4.5 Conclusions p. 27
6.5 Solution #5: Service Provisioning to UE for eV2X communications over PC5 and NG-Uu reference points p. 27
6.5.1 General Description p. 27
6.5.2 Initial Provisioning of eV2X Communication Parameters p. 27
6.5.3 Update of eV2X Communication Parameters p. 28
6.5.3.0 General p. 28
6.5.3.1 UE triggered update of eV2X Communication Parameters p. 29
6.5.3.2 Network triggered update of eV2X Communication Parameters p. 29
6.5.4 Impact on existing entities and interfaces p. 30
6.5.5 Conclusions p. 30
6.6 Solution #6: eV2X impacts to 5GC procedures p. 30
6.6.1 Functional Description p. 30
6.6.2 Procedures p. 31
6.6.2.1 Registration procedure for UE p. 31
6.6.2.2 Service Request procedures for UE p. 31
6.6.2.3 N2 Handover procedures for UE p. 31
6.6.2.4 Xn Handover procedures for UE p. 32
6.6.2.5 Nudm_SDM_UpdateNotification procedure for UE p. 32
6.6.2.6 V2X capability indication and V2X related information per PC5 RAT p. 32
6.6.3 Impact on existing entities and interfaces p. 32
6.6.4 Topics for further study p. 33
6.6.5 Conclusions p. 33
6.7 Solution #7: Solution for Network Slicing for eV2X services p. 33
6.7.1 Functional Description p. 33
6.7.2 Procedures p. 33
6.7.3 Impact on existing entities and interfaces p. 34
6.7.4 Topics for further study p. 34
6.7.5 Conclusions p. 34
6.8 Solution #8: Application Function influence based edge computing for V2X p. 34
6.8.1 Functional Description p. 34
6.8.2 Procedures p. 35
6.8.3 Impact on existing entities and interfaces p. 36
6.8.4 Topics for further study p. 36
6.8.5 Conclusions p. 36
6.9 Solution #9: Interworking for eV2X p. 36
6.9.1 Introduction p. 36
6.9.2 Functional Description p. 36
6.9.3 Procedures p. 38
6.9.4 Impacts on existing entities and interfaces p. 38
6.9.5 Evaluation p. 38
6.9.6 Conclusions p. 38
6.10 Solution #10: Interworking solution based on Architecture in A.2 p. 38
6.10.1 Introduction p. 38
6.10.2 Functional Description p. 38
6.10.3 Procedures p. 39
6.10.4 Impact on existing entities and interfaces p. 40
6.10.5 Conclusions p. 40
6.11 Solution #11: Solution for unicast or multicast for eV2X communication over PC5 reference point p. 40
6.11.1 Functional Description p. 40
6.11.2 Solution description p. 40
6.11.2.1 Identifiers for the unicast communication p. 40
6.11.2.1.1 Separate L2 ID address space for unicast and multicast from those for broadcast p. 40
6.11.2.1.2 Deciding the Destination L2 ID to use for unicast/multicast communication p. 40
6.11.2.2 Signalling protocol to support unicast/multicast communication p. 41
6.11.2.3 QoS support and AS layer configurations p. 41
6.11.2.4 Security associations p. 42
6.11.2.5 Procedures for the link establishment and maintenance p. 42
6.11.3 Procedures p. 42
6.11.3.1 Establishment of layer 2 link over PC5 p. 42
6.11.3.2 Contents of the signalling message for link establishment p. 43
6.11.3.3 Link identifier update procedure for privacy protection of unicast communication p. 44
6.11.3.4 Security aspects for layer 2 link p. 45
6.11.4 Impact on existing entities and interfaces p. 45
6.11.5 Topics for further study p. 45
6.11.6 Conclusions p. 45
6.12 Solution #12: 3GPP PC5 RAT selection for a V2X application p. 45
6.12.1 Functional Description p. 45
6.12.2 Procedures p. 46
6.12.3 Impact on existing entities and interfaces p. 46
6.12.4 Topics for further study p. 46
6.12.5 Conclusions p. 46
6.13 Solution #13: Solution for PC5 RAT selection p. 46
6.13.1 Functional Description p. 46
6.13.2 Procedures p. 47
6.13.3 Impact on existing entities and interfaces p. 47
6.13.4 Topics for further study p. 47
6.13.5 Conclusions p. 47
6.14 Solution #14: Solution for eV2X system migration p. 47
6.14.1 Functional Description p. 47
6.14.1.1 General description p. 47
6.14.1.2 PC5 based V2X communication considerations p. 47
6.14.1.3 Additional consideration for PC5 Mode 3 operations p. 48
6.14.1.4 Uu based V2X communication considerations p. 48
6.14.2 Procedures p. 49
6.14.3 Impact on existing entities and interfaces p. 49
6.14.4 Topics for further study p. 49
6.14.5 Conclusions p. 49
6.15 Solution #15: Network-controlled QoS mechanism for PC5 communication p. 49
6.15.1 General Description p. 49
6.15.2 Proposed QoS model for PC5 communication p. 49
6.15.3 Procedures p. 50
6.15.4 Impact on existing entities and interfaces p. 50
6.15.5 Conclusions p. 50
6.16 Solution #16: Solution for QoS Support for eV2X over Uu Interface - Enhancements for QoS Monitoring and Control p. 50
6.16.1 Functional Description p. 50
6.16.2 Procedures p. 51
6.16.2.1 Application Function Request to Influence eV2X QoS p. 51
6.16.2.2 Application Function Request of QoS Level Change Notification p. 52
6.16.2.3 eV2X Service Session QoS Level Change and AF Notification p. 52
6.16.3 Impact on existing entities and interfaces p. 54
6.16.4 Topics for further study p. 55
6.16.5 Solution evaluation p. 55
6.16.6 Conclusions p. 55
6.17 Solution #17: Solution for QoS Support for eV2X over Uu Interface p. 55
6.17.1 Functional Description p. 55
6.17.2 Procedures p. 56
6.17.3 Impact on existing entities and interfaces p. 56
6.17.4 Topics for further study p. 57
6.17.5 Solution evaluation p. 57
6.17.6 Conclusions p. 57
6.18 Solution #18: Non-IP based V2X message transmission and reception over Uu reference point in 5GS p. 57
6.18.1 Functional Description p. 57
6.18.2 Impact on existing entities and interfaces p. 58
6.18.3 Topics for further study p. 59
6.18.4 Conclusions p. 59
6.19 Solution #19: QoS Support for eV2X communication over PC5 interface p. 59
6.19.1 Functional Description p. 59
6.19.1.1 General description p. 59
6.19.1.2 Solution description p. 59
6.19.1.3 V2X 5QI (VQI) values for PC5 broadcast use p. 60
6.19.2 Procedures p. 60
6.19.2.1 QoS support for unicast communication over PC5 interface p. 60
6.19.2.1.0 General p. 60
6.19.2.1.1 QoS parameters provision to UE and NG-RAN p. 60
6.19.2.1.2 QoS parameters negotiation between UEs p. 61
6.19.2.1.3 QoS handling for eV2X communication p. 61
6.19.2.2 QoS support for broadcast communication over PC5 interface p. 62
6.19.2.3 QoS support for group communication over PC5 interface p. 62
6.19.3 Impact on existing entities and interfaces p. 62
6.19.4 Topics for further study p. 62
6.19.5 Conclusions p. 62
6.20 Solution #20: Authorization Policy for eV2X communication over PC5 interface and NG-Uu interface p. 62
6.20.1 Functional Description p. 62
6.20.2 Authorization Policy parameters to UE Connected to 5GC p. 63
6.20.2.1 Authorization Policy parameters for PC5 Communication p. 63
6.20.2.2 Policy parameters for NG-Uu Communication p. 64
6.20.2.3 Policy parameters for both Uu and NG-Uu Communication p. 64
6.20.3 Impact on existing entities and interfaces p. 64
6.20.4 Topics for further study p. 64
6.20.5 Conclusions p. 64
6.21 Solution #21: Group communication enhancement for NR PC5 p. 65
6.21.1 Functional Description p. 65
6.21.2 Procedures p. 65
6.21.3 Impact on existing entities and interfaces p. 67
6.21.4 Topics for further study p. 67
6.21.5 Conclusions p. 67
6.22 Solution #22: Authorization for NR based PC5 communication when the UE is served by EPS p. 67
6.22.1 Functional Description p. 67
6.22.2 Procedures p. 68
6.22.2.1 UE indicates its NR PC5 capability to the EPS network p. 68
6.22.2.2 Authorization for sending V2X message over PC5 using NR RAT p. 68
6.22.2.3 Provisioning of V2X configuration for NR based PC5 communication. p. 68
6.22.3 Impact on existing entities and interfaces p. 68
6.22.4 Topics for further study p. 68
6.22.5 Conclusions p. 68
6.23 Solution #23: Early notification for Dynamic Application Adjustment p. 69
6.23.1 Functional Description p. 69
6.23.2 Procedures p. 70
6.23.2A Details of analytics retrieval from the NWDAF p. 71
6.23.2A.1 Input Data p. 71
6.23.2A.2 Output Analytics p. 71
6.23.3 Impact on existing entities p. 71
6.23.4 Evaluation p. 72
6.23.5 Conclusions p. 72
6.24 Solution #24: Solution for AF-initiated UE provisioning p. 72
6.24.1 Functional Description p. 72
6.24.1.1 General Description p. 72
6.24.1.2 AF-initiated Service Parameter provisioning p. 73
6.24.1.3 NEF service for Service Parameter provisioning p. 74
6.24.1.3.1 General p. 74
6.24.1.3.2 Nnef_ServiceParameter_Create operation p. 74
6.24.1.3.3 Nnef_ServiceParameter_Update operation p. 74
6.24.1.3.4 Nnef_ServiceParameter_Delete operation p. 74
6.24.1.4 V2X service parameter delivery p. 74
6.24.2 Procedures p. 74
6.24.3 Impact on existing entities and interfaces p. 75
6.24.4 Topics for further study p. 75
6.24.5 Conclusions p. 76
6.25 Solution #25: Solution for Key Issue #13 p. 76
6.25.1 Functional Description p. 76
6.25.2 Impacts on existing entities and interfaces p. 76
6.25.3 Conclusions p. 77
6.26 Solution #26: Path-based QoS booking for Application Adjustment p. 77
6.26.1 Functional Description p. 77
6.26.2 Procedures p. 79
6.26.2.1 V2X application Requested Booking p. 79
6.26.2.2 Network Initiated Booking Update p. 80
6.26.2.3 Details of system interactions for resources booking p. 81
6.26.2.4 Impact on other procedures p. 82
6.26.3 Impact on existing entities and interfaces p. 82
6.26.4 Topics for further study p. 82
6.26.5 Conclusions p. 82
6.27 Solution #27: Solution for QoS Support for eV2X over Uu Interface p. 83
6.27.1 Functional Description p. 83
6.27.2 Procedures p. 84
6.27.3 Impact on existing entities and interfaces p. 84
6.27.4 Topics for further study p. 85
6.27.5 Solution evaluation p. 85
6.27.6 Conclusions p. 85
6.28 Solution #28: Ecosystem-based gathering of network intelligence for in advance performance estimation p. 85
6.28.1 Functional Description p. 85
6.28.2 Procedures p. 86
6.28.3 Impact on existing entities and interfaces p. 86
6.28.4 Topics for further study p. 86
6.28.5 Solution evaluation p. 87
6.28.6 Conclusions p. 87
6.29 Solution #29: Potential QoS change notification to assist Application Adjustment p. 87
7 Conclusions p. 90
7.0 General p. 90
7.1 Conclusions for EPS p. 90
7.2 Conclusions for 5G System p. 91
7.3 Interim Conclusions for EPS p. 92
A eV2X Architecture variants p. 93
A.0 Description p. 93
A.1 Alternative#1: eV2X Architecture Reference Model p. 93
A.1.1 Description p. 93
A.1.1.1 Description of existing V2X for EPS p. 93
A.1.1.2 5G Description p. 94
A.1.1.3 PC5 and Uu based eV2X architecture reference model p. 94
A.1.2 Procedures p. 97
A.1.3 Impact on existing entities and interfaces p. 97
A.1.4 Topics for further study p. 97
A.2 Alternative#2: Reusing EPS V2X Architecture p. 97
A.2.1 Description p. 97
A.3 Alternative#3: V2X Control Function as a new CP entity in 5GC p. 100
A.3.1 Description p. 100
A.3.2 Procedures p. 101
A.3.3 Impact on existing entities and interfaces p. 101
A.3.4 Topics for further study p. 101
A.4 Alternative#4: eV2X Architecture Reference Model p. 102
A.4.1 Description p. 102
B Solutions for broadcast/multicast/group delivery over Uu p. 104
B.0 Description p. 104
B.1 Solution #B1: Support of broadcast in 5GS p. 104
B.1.1 Functional Description p. 104
B.1.1.0 General p. 104
B.1.1.1 5G-MBMS Architecture p. 104
B.1.1.2 Service-based interfaces and Reference points p. 105
B.1.2 Procedures p. 105
B.1.2.1 Service Announcement p. 105
B.1.2.2 TMGI Management p. 105
B.1.2.3 MBMS Session Management p. 105
B.1.3 Impact on existing entities and interfaces p. 106
B.1.4 Topics for further study p. 106
B.1.5 Conclusions p. 106
B.2 Solution #B2: Support of broadcast/multicast/group delivery over Uu p. 106
B.2.1 Introduction p. 106
B.2.2 Architecture p. 107
B.2.3 Support of EPC interworking p. 107
B.2.4 Procedures p. 107
B.2.4.1 Service announcement p. 107
B.2.4.2 TMGI Management p. 107
B.2.4.2.1 General p. 107
B.2.4.2.2 TMGI Allocation p. 108
B.2.4.2.3 TMGI Refresh p. 108
B.2.4.2.4 TMGI deallocation p. 109
B.2.4.3 Create, Update and Release a Group Session p. 109
B.2.5 Impacts on existing entities and interfaces/Functional Entities p. 112
B.2.6 Evaluation p. 114
B.3 Solution #B3: Support for eMBMS over EPS MBMS with independent unicast from 5GS p. 114
B.3.1 Functional Description p. 114
B.3.1.1 General description p. 114
B.3.1.2 Solution description p. 114
B.3.2 Procedures p. 116
B.3.3 Impact on existing entities and interfaces p. 116
B.3.4 Topics for further study p. 116
B.3.5 Conclusions p. 116
B.4 Solution #B4: Support of multicast/groupcast/broadcast services in 5GS p. 116
B.4.1 Functional Description p. 116
B.4.2 Procedures p. 118
B.4.3 Impact on existing entities and interfaces p. 118
B.4.4 Topics for further study p. 118
B.4.5 Conclusions p. 118
$ Change History p. 119
