Content for TR 23.700-62 Word version: 18.0.0
6 Solutions p. 12
6.0 Mapping of Solutions to Key Issues p. 12
6.1 Solution #1: UPF event exposure service framework enhancements to support registration, deregistration and discovery via NRF p. 12
6.1.1 Description p. 12
6.1.2 Procedures p. 13
6.1.2.1 UPF Event Exposure service Registration p. 13
6.1.2.2 UPF Event Exposure service Update p. 14
6.1.2.3 UPF Event Exposure service Deregistration p. 15
6.1.2.4 UPF Event Exposure service Discovery p. 15
6.1.2.5 UPF Selection for a UPF Event Exposure Service Request p. 16
6.1.2.5.1 Procedure of UPF selection by the NF targeting PDU session or UE with information of IP address p. 16
6.1.2.5.2 Procedure of UPF selection by the NF targeting PDU session or UE with information of SUPI, S-NSSAI and DNN p. 18
6.1.2.5.3 Procedure of UPF selection by the NF with information of S-NSSAI, DNN and/or DNAI p. 20
6.1.2.5.4 Procedure of UPF selection by the NF targeting specific PDU sessions and UEs with information of Group Identifier p. 21
6.1.3 Impacts on services, entities and interfaces p. 21
6.2 Solution #2: UPF event exposure service for TSC management p. 22
6.2.1 Key Issue mapping p. 22
6.2.2 Description p. 22
6.2.3 Procedures p. 22
6.2.3.1 TSN AF/TSCTSF based UPF event subscription p. 23
6.2.3.2 SMF based UPF event subscription p. 23
6.2.3.3 Bridge information reporting p. 24
6.2.3.4 Analysis of directly reporting TSC management information p. 25
6.2.4 Impacts on services, entities and interfaces p. 26
6.3 Solution #3: using the proper subscription mechanism depending on the event targeted by the UPF event consumer p. 27
6.3.1 Key Issue mapping p. 27
6.3.2 Description p. 27
6.3.3 Procedures p. 29
6.3.4 selection of the proper UPF within the UPF(s) that serve a PDU Session p. 29
6.3.5 Impacts on services, entities and interfaces p. 29
6.4 Solution #4: upgrading N4 to pass necessary event filtering information to the UPF p. 30
6.4.1 Key Issue mapping p. 30
6.4.2 Description p. 30
6.4.3 Procedures p. 30
6.4.4 Impacts on services, entities and interfaces p. 31
6.5 Solution #5: registering UPF(s) serving a PDU session at UDM p. 31
6.5.1 Key Issue mapping p. 31
6.5.2 Description p. 31
6.5.3 Procedures p. 32
6.5.4 Impacts on services, entities and interfaces p. 33
6.6 Solution #6: Determining the UPF(s) that serve a UE address p. 33
6.6.1 Key Issue mapping p. 33
6.6.2 Description p. 33
6.6.3 Procedures p. 34
6.6.4 Impacts on services, entities and interfaces p. 34
6.7 Solution #7: Support to existing (Rel-16-Rel-17) data analytics with PDU Session Data Usage Events p. 35
6.7.1 Key Issue mapping p. 35
6.7.2 Description p. 35
6.7.3 Procedures p. 36
6.7.3.1 Subscription to UPF for Data Collection for "Any UE" p. 36
6.7.3.2 Subscription to UPF for Data Collection for certain PDU Sessions p. 37
6.7.4 Impacts on services, entities and interfaces p. 39
6.8 Solution #8: Support to existing (Rel-16-Rel-17) data analytics with QoS Flow level measurements p. 40
6.8.1 Key Issue mapping p. 40
6.8.2 Description p. 40
6.8.3 Procedures p. 41
6.8.4 Impacts on services, entities and interfaces p. 43
6.9 Solution #9 to Key Issue 2: NWDAF collects information from UPF by event exposure p. 44
6.9.1 Mapping table between Analytics ID and the related information collection in UPF p. 44
6.9.2 Service based UPF event exposure p. 45
6.9.3 Procedure p. 47
6.9.4 Impacts on services, entities and interfaces p. 50
6.10 Solution #10: UPF event exposure service to NWDAF p. 51
6.10.1 Key Issue mapping p. 51
6.10.2 Description p. 51
6.10.3 Procedures p. 51
6.10.4 Impacts on services, entities and interfaces p. 53
6.11 Solution #11: UPF event exposure service to NWDAF subscribed directly from UPF p. 53
6.11.1 Key Issue mapping p. 53
6.11.2 Description p. 53
6.11.3 Procedures p. 53
6.11.4 Impacts on services, entities and interfaces p. 54
6.12 Solution #12: UPF registration to the NRF and NWDAF collecting data from UPF p. 55
6.12.1 Key Issue mapping p. 55
6.12.2 Description p. 55
6.12.3 Procedures p. 55
6.12.3.1 Procedure for UPF Registration to NRF p. 55
6.12.3.2 Procedure for NWDAF collecting data from UPF p. 56
6.12.4 Impacts on services, entities and interfaces p. 56
6.13 Solution #13: Subscription to UPF Event Exposure Services in the event of UP Path change p. 57
6.13.1 Key Issue mapping p. 57
6.13.2 Description p. 57
6.13.3 Procedures p. 57
6.13.4 Impacts on services, entities and interfaces p. 58
6.14 Solution #14: Reduce the UPF performance impacts due to data reporting to NF consumer p. 58
6.14.1 Key Issue mapping p. 58
6.14.2 Description p. 58
6.14.3 Procedures p. 59
6.14.4 Impacts on services, entities and interfaces p. 59
6.15 Solution #15: Subscription of UPF Event Exposure Service p. 59
6.15.1 Key Issue mapping p. 59
6.15.2 Description p. 60
6.15.3 Procedures p. 60
6.15.4 Impacts on services, entities and interfaces p. 61
6.16 Solution #16: Direct/indirect subscription of the UPF event exposure service p. 61
6.16.1 Key Issue mapping p. 61
6.16.2 Description p. 61
6.16.3 Procedures p. 62
6.16.3.1 UPF event exposure service subscription directly from the UPF p. 62
6.16.3.2 UPF event exposure service subscription via an SMF p. 63
6.16.4 Impacts on services, entities and interfaces p. 64
6.17 Solution #17: Update/Release subscription of the UPF event exposure service p. 64
6.17.1 Key Issue mapping p. 64
6.17.2 Description p. 64
6.17.3 Procedures p. 64
6.17.3.1 Update/release UPF event exposure service subscription directly by UPF p. 64
6.17.3.2 Update/release UPF event exposure service subscription via an SMF p. 65
6.17.4 Impacts on services, entities and interfaces p. 66
6.18 Solution #18: QoS parameters exposure by UPF p. 67
6.18.1 Key Issue mapping p. 67
6.18.2 Description p. 67
6.18.3 Procedures p. 67
6.18.4 Impacts on services, entities and interfaces p. 68
6.19 Solution #19: QoS Monitoring results exposure by UPF p. 68
6.19.1 Key Issue mapping p. 68
6.19.2 Description p. 68
6.19.3 Procedures p. 68
6.19.3.1 QoS Monitoring results subscription directly from the UPF under the same PCF policy p. 68
6.19.3.2 QoS Monitoring results subscription directly from the UPF without PCF policy control p. 69
6.19.4 Impacts on services, entities and interfaces p. 70
6.20 Solution #20: UE IP address mapping information exposure by UPF p. 70
6.20.1 Key Issue mapping p. 70
6.20.2 Description p. 70
6.20.3 Procedures p. 71
6.20.3.1 UPF registration in NRF with NATed IP pools p. 71
6.20.3.2 UE IP address mapping information exposure by UPF p. 71
6.20.4 Impacts on services, entities and interfaces p. 72
6.21 Solution #21: UPF Event Exposure with consideration on UPF performance p. 72
6.21.1 Key Issue mapping p. 72
6.21.2 Description p. 72
6.21.3 Procedures p. 73
6.21.4 Impacts on services, entities and interfaces p. 73
6.22 Solution #22: Support UPF event exposure service subscription update in case of UPF/SMF change p. 73
6.22.1 Key Issue mapping p. 73
6.22.2 Description p. 73
6.22.3 Procedures p. 74
6.22.3.1 The consumer NF subscribes SMF/UPF change notification from the SMF p. 74
6.22.3.2 The consumer NF subscribes UPF change notification from the BSF by storing UPF ID and UE IP address in the BSF in PDU Session Establishment procedure p. 75
6.22.4 Impacts on services, entities and interfaces p. 76
