Content for TR 23.700-85 Word version: 18.0.0
6 Solutions p. 14
6.0 Mapping of Solutions to Key Issues p. 14
6.1 Solution #1: Usage of application guidance for URSP rules determination mechanisms p. 14
6.1.1 Description p. 14
6.1.2 Procedures p. 15
6.1.3 Impacts on Existing Nodes and Functionality p. 15
6.2 Solution #2: VPLMN influencing URSP rules in an HPLMN p. 15
6.2.1 Description p. 15
6.2.2 Procedures p. 16
6.2.2.1 VPLMN AF guidance for URSP rule creation at an HPLMN p. 16
6.2.2.2 UE behaviour on applying a URSP rule with a PLMN validity condition in route selection descriptor p. 18
6.2.3 Impacts on services, entities and interfaces p. 18
6.3 Solution #3: URSP provisioning and updating in roaming p. 18
6.3.1 Description p. 18
6.3.2 UE Policy Association Establishment with VPLMN assistant information p. 19
6.3.3 UE Policy Association modification with VPLMN assistant information p. 20
6.3.4 Support routing of the same application traffic with different URSP rules in different PLMNs p. 20
6.3.4.1 URSP enhancement with including the PLMN ID in TD (Option#1) p. 20
6.3.4.2 URSP dedicated to VPLMN (Option#2) p. 21
6.3.5 Impacts on Existing Nodes and Functionality p. 21
6.4 Solution #4: URSP decision with V-PCF involvement p. 21
6.4.1 Description p. 21
6.4.2 Procedure p. 22
6.4.3 Impacts on services, entities and interfaces p. 22
6.5 Solution #5: URSP determination based on service parameter obtained from VPLMN p. 23
6.5.1 Description p. 23
6.5.2 Procedures p. 24
6.5.3 Impacts on services, entities and interfaces p. 25
6.6 Solution #6: Solution for URSP in VPLMN with PLMN domain indication p. 26
6.6.1 General p. 26
6.6.2 Functional descriptions p. 26
6.6.3 Procedures p. 27
6.6.4 Impacts on services, entities, and interfaces p. 27
6.7 Solution #7: URSP Compliance Verification p. 27
6.7.1 Description p. 27
6.7.2 Procedures p. 31
6.7.2.1 Provisioning of URSP Compliance Verification in Registration procedure p. 31
6.7.2.2 URSP Compliance Verification in PDU Session Establishment procedure p. 32
6.7.3 Impacts on services, entities and interfaces p. 34
6.8 Solution #8: URSP Rule Precedence reporting for awareness of URSP enforcement p. 35
6.8.1 Description p. 35
6.8.2 Procedures p. 35
6.8.3 Impacts on services, entities and interfaces p. 36
6.9 Solution #9: Per-PDU session awareness of URSP enforcement p. 37
6.9.1 Description p. 37
6.9.2 Procedures p. 37
6.9.3 Impacts on services, entities and interfaces p. 39
6.10 Solution #10: Network based URSP rules enforcement feedback p. 39
6.10.1 Description p. 39
6.10.1.1 Network based URSP rules enforcement verification without UE assistance p. 39
6.10.1.2 Network based URSP rules enforcement verification with UE assistance p. 40
6.10.2 Procedure p. 40
6.10.2.1 Network based URSP rules enforcement verification without UE assistance p. 40
6.10.2.2 Network based URSP rules enforcement verification with UE assistance p. 42
6.10.3 Impacts on services, entities and interfaces p. 44
6.11 Solution #11: 5GC awareness of URSP recognition by UE p. 44
6.11.1 Description p. 44
6.11.2 Procedures p. 45
6.11.3 Impacts on services, entities and interfaces p. 45
6.12 Solution #12: URSP rule enforcement validation via gating control p. 46
6.13 Solution #13: URSP enforcement via PDU Session authorization/authentication when UE associating with application p. 48
6.13.1 Description p. 48
6.13.2 Procedures p. 50
6.13.3 Impacts on services, entities and interfaces p. 51
6.14 Solution #14: 5GC awareness of URSP rule evaluation and verification of network slice usage p. 51
6.14.1 Description p. 51
6.14.2 Procedures p. 52
6.14.3 Impacts on services, entities and interfaces p. 53
6.15 Solution #15: UE URSP enforcement validation by the network p. 54
6.15.1 Description p. 54
6.15.2 Procedures p. 54
6.15.3 Impacts on services, entities and interfaces p. 55
6.16 Solution #16: URSPs into PCO for EPC p. 55
6.16.1 Description p. 55
6.16.1.1 Use cases and scenarios p. 55
6.16.1.2 Background: URSP provisioning to a UE in 5GS p. 56
6.16.1.3 How to provision URSP to a UE in EPC p. 57
6.16.1.4 Deployments where the PCF for the PDU session and the PCF for the UE are different PCFs p. 57
6.16.2 Procedures p. 59
6.16.2.1 Initial Attach procedure in EPC p. 59
6.16.2.2 URSP update initiated by PCF p. 60
6.16.2.3 Procedures for deployments where the PCF for the PDU session and the PCF for the UE are different PCFs p. 61
6.16.3 Impacts p. 64
6.17 Solution #17: Indication of applicability of URSP to UE in EPS p. 65
6.17.1 Description p. 65
6.17.2 Procedures p. 66
6.17.2.1 URSP provisioning with EPS applicability indication p. 66
6.17.2.2 Evaluation of URSP rules with EPS applicability indication p. 67
6.17.3 Impacts on services, entities and interfaces p. 67
6.18 Solution #18: Provisioning consistent URSP to UE across 5GS and EPS for Collocated PCF Deployment p. 67
6.18.1 Description p. 67
6.18.2 Procedures p. 68
6.18.2.1 UE triggered UE Policy provisioning procedure in EPS p. 68
6.18.2.2 PCF triggered UE Policy provisioning procedure in EPS p. 68
6.18.3 Impacts on services, entities and interfaces p. 69
6.19 Solution #19: Provision of URSP to UE when the UE attaches in the EPS p. 69
6.19.1 Introduction p. 69
6.19.2 Procedures p. 70
6.20 Solution #20: URSP delivery for the UE in EPS p. 71
6.20.1 Description p. 71
6.20.2 Procedures p. 73
6.20.2.1 UE Policy delivery procedure initiated by the UE in EPS p. 73
6.20.2.2 UE Policy delivery procedure initiated by the PCF p. 74
6.20.2.3 URSP delivery over EPS Indication in 5GS p. 74
6.20.2.4 5GS to EPS Handover using N26 interface p. 75
6.20.2.5 5GS to EPS Idle mode mobility using N26 interface p. 76
6.20.2.6 Relocate an established UE Policy Association to SM-PCF p. 76
6.20.3 Impacts on services, entities and interfaces p. 77
6.21 Solution #21: Traffic Category with existing mechanism p. 78
6.21.1 Description p. 78
6.21.2 Procedures p. 79
6.21.3 Impacts on services, entities and interfaces p. 79
6.22 Solution #22: UE provisioned/configured with a mapping of application traffic to traffic categories p. 79
6.22.1 Description p. 79
6.22.2 Procedures p. 80
6.22.2.1 Association of application traffic to a Traffic Category p. 80
6.22.2.2 Enhancing URSP rule with a Traffic Category Traffic Descriptor p. 81
6.22.3 Impacts on services, entities and interfaces p. 82
6.23 Solution #23: Support standardized and operator-specific traffic categories in URSP p. 83
6.23.1 Description p. 83
6.23.2 Procedures p. 84
6.23.3 Impacts on services, entities and interfaces p. 84
6.24 Solution #24: Introduction of Traffic Category into URSP rules p. 84
6.24.1 Description p. 84
6.24.2 Procedure p. 85
6.24.3 Impacts on services, entities and interfaces p. 86
6.25 Solution #25: Support standardized and operator-specific traffic categories in URSP p. 86
6.25.1 Description p. 86
6.25.2 Procedures p. 86
6.25.3 Impacts on Existing Nodes and Functionality p. 87
6.26 Solution #26: Traffic categories based on 5G QoS characteristics p. 87
6.26.1 Description p. 87
6.26.1.1 Traffic categories based on service type p. 87
6.26.1.2 Traffic categories based on Traffic characteristics p. 88
6.26.2 Procedures p. 88
6.26.3 Impacts on services, entities and interfaces p. 88
6.27 Solution #27: URSP provisioning and updating in roaming p. 89
6.27.1 Description p. 89
6.27.2 Procedure for UE Policy Association Establishment with VPLMN provided URSP Rules p. 91
6.27.3 PDU Session establishment for LBO p. 92
6.27.4 AF guidance for URSP determination p. 92
6.27.5 Impacts on Existing Nodes and Functionality p. 93
6.28 Solution #28: Provisioning VPLMN URSP p. 93
6.28.1 Description p. 93
6.28.2 Procedures p. 94
6.28.2.1 Provisioning VPLMN URSP rules for roaming scenario p. 94
6.28.2.2 Application Guidance of URSP determination in VPLMN p. 98
6.28.3 Impacts on services, entities and interfaces p. 100
6.29 Solution #29: Using Location Criteria to Control Routing of Application Traffic p. 100
6.29.1 Description p. 100
6.29.2 Procedures p. 101
6.29.3 Impacts on services, entities and interfaces p. 101
6.30 Solution #30: Leveraging NWDAF to determine UEs that enforce URSP rules incorrectly. p. 101
6.30.1 Description p. 101
6.30.2 Input Data p. 103
6.30.3 Output Analytics p. 103
6.30.4 Procedures p. 103
6.30.5 Impacts on services, entities and interfaces p. 105
6.31 Solution #31: New URSP Notification Component p. 105
6.31.1 Description p. 105
6.31.2 Procedures p. 107
6.31.2.1 URSP Notification procedure flow p. 107
6.31.2.2 Detail of UE policy delivery and user consent p. 108
6.31.2.3 URSP Rule rejection for pre-configured URSP rules or already-accepted URSP rules (e.g. change in privacy/security settings) p. 109
6.31.2.4 Example of PCF actions on receiving URSP Notifications p. 110
6.31.3 Impacts on Existing Nodes and Functionality p. 115
6.32 Solution #32: Application Detection using Domain Descriptor p. 116
6.32.1 Description p. 116
6.32.2 Procedures p. 117
6.32.3 Impacts on services, entities and interfaces p. 118
6.33 Solution #33: Consistent URSP Provisioning across 5GS and EPS p. 119
6.33.1 Description p. 119
6.33.1.1 Use Cases and Scenarios p. 119
6.33.1.2 Provision URSP to a UE in EPC p. 120
6.33.1.3 Handle the UE Policy Association during mobility from 5GS to EPS with N26 p. 120
6.33.2 Procedures p. 121
6.33.2.1 UE Policy provisioning procedure with explicit URSP Support Indication in EPS p. 121
6.33.2.2 PCF triggered UE Policy provisioning procedure p. 123
6.33.2.3 5GS to EPS Handover using N26 interface p. 124
6.33.2.4 5GS to EPS Idle mode mobility using N26 interface p. 125
6.33.2.5 SM Policy and UE Policy Association Update after 5GS to EPS mobility using N26 interface p. 126
6.33.2.6 UE Policy Association handling after EPS to 5GS mobility p. 126
6.33.3 Impacts on services, entities and interfaces p. 126
6.34 Solution #34: Provisioning UE policy in EPS via N3IWF p. 127
6.34.1 Description p. 127
6.34.2 Procedures p. 128
6.34.3 Impacts on services, entities and interfaces p. 129
6.35 Solution #35: Support standardized and operator-specific traffic categories using existing URSP traffic descriptors p. 129
6.35.1 Description p. 129
6.35.2 Procedures p. 130
6.35.3 Impacts on services, entities and interfaces p. 131
