Content for TR 23.700-71 Word version: 18.0.0
5 Key Issues p. 13
5.1 Key Issue #1: Architectural Enhancement to support User Plane positioning p. 13
5.1.1 Introduction p. 13
5.2 Key Issue #2: enhanced positioning architecture for NPN deployment p. 14
5.2.1 Description p. 14
5.3 Key Issue #3: Local Area Restriction for an LMF and GMLC p. 14
5.3.1 Description p. 14
5.4 Key Issue #4: Interaction between Location Service and NWDAF p. 15
5.4.1 Description p. 15
5.5 Key Issue #5: Assistance data provisioning for low power high accuracy GNSS positioning p. 15
5.5.1 Description p. 15
5.6 Key Issue #6: UE Positioning without UE/User Awareness p. 16
5.6.1 Description p. 16
5.7 Key Issue #7: support of Positioning Reference Units and Reference UEs p. 16
5.7.1 Description p. 16
5.8 Key Issue #8: support of location service continuity in case of UE mobility p. 17
5.8.1 Description p. 17
5.9 Key Issue #9: Support of Positioning Requirements Related to Satellite Access p. 17
5.9.1 Description p. 17
5.10 Key Issue #10: Support of Reduced Latency p. 18
5.10.1 Description p. 18
5.11 Key Issue #11: Enhance the Triggered Location for UE power saving purpose p. 18
5.11.1 Description p. 18
5.12 Key Issue #12: support of low power and/or high accuracy positioning p. 19
5.12.1 Description p. 19
6 Solutions p. 20
6.0 Mapping Solutions to Key Issues p. 20
6.1 Solution #1: Positioning protocol transport over User Plane p. 20
6.1.1 Introduction p. 20
6.1.2 Functional Description p. 20
6.1.3 Procedures p. 21
6.1.3.1 Establish LCS-UP connection between UE and LMF p. 21
6.1.3.2 Modify LCS-UP connection between UE and LMF p. 22
6.1.3.3 UE Assisted and UE Based Positioning Procedure over LCS-UP p. 23
6.1.4 Impacts on services, entities, and interfaces p. 23
6.2 Solution #2: Discovery of User Plane service Cooperated with 3GPP LCS Features p. 24
6.2.1 Introduction p. 24
6.2.2 Functional Description p. 24
6.2.3 Procedures p. 27
6.2.3.1 LMF Offload traffic to Cooperated LCUP p. 27
6.2.3.2 LMF Activates UE with UP Connection to LCUP p. 29
6.2.4 Impacts on services, entities, and interfaces p. 30
6.3 Solution #3: User plane location capability transfer and positioning via user plane p. 30
6.3.1 Introduction p. 30
6.3.2 Functional Description p. 31
6.3.3 Procedures p. 31
6.3.3.1 User plane location capability transfer p. 31
6.3.3.2 5GC-MT-LR Procedure via user plane p. 32
6.3.3.2a Deferred 5GC-MT-LR Procedure via user plane p. 34
6.3.3.2b Cancellation of Event Reporting p. 35
6.3.3.3 5GC-MO-LR Procedure via user plane p. 35
6.3.3.4 LPP transfer via user plane p. 36
6.3.3.5 LMF Change Procedure with user plane positioning p. 37
6.3.4 Impacts on services, entities, and interfaces p. 38
6.4 Solution #4: Direct communication between LMF and RAN node p. 38
6.4.1 Introduction p. 38
6.4.2 Functional Description p. 38
6.4.3 Procedures p. 40
6.4.3.1 Network Assisted Positioning Procedure p. 40
6.4.3.2 Obtaining Non-UE Associated Network Assistance Data p. 41
6.4.4 Impacts on services, entities, and interfaces p. 41
6.5 Solution #5: LCS architecture with "any AMF" p. 42
6.5.1 Introduction p. 42
6.5.2 Functional Description p. 42
6.5.3 Procedures p. 43
6.5.3.1 Network Assisted Positioning Procedure p. 43
6.5.3.2 Obtaining Non-UE Associated Network Assistance Data p. 43
6.5.4 Impacts on services, entities, and interfaces p. 44
6.6 Solution #6: LMF selection based on LMF ID p. 44
6.6.1 Introduction p. 44
6.6.2 Functional Description p. 44
6.6.3 Procedures p. 45
6.6.4 Impacts on existing entities and interfaces p. 45
6.7 Solution #7: LMF selection based on client or AF identifier p. 46
6.7.1 Introduction p. 46
6.7.2 Functional Description p. 46
6.7.3 Procedures p. 46
6.7.4 Impacts on services, entities, and interfaces p. 46
6.8 Solution #8: LMF Selection based on GMLC service area p. 46
6.8.1 Introduction p. 46
6.8.2 Functional Description p. 46
6.8.3 Procedures p. 47
6.8.4 Impacts on services, entities, and interfaces p. 47
6.9 Solution #9: local LMF and GMLC selection p. 47
6.9.1 Introduction p. 47
6.9.2 Functional Description p. 47
6.9.3 Procedures p. 47
6.9.3.1 5GC-MT-LR Procedure for the commercial location service p. 47
6.9.3.2 integration with user plane positioning p. 48
6.9.4 Impacts on services, entities, and interfaces p. 49
6.10 Solution #10: Support interaction between location service and NWDAF p. 49
6.10.1 Introduction p. 49
6.10.2 Functional Description p. 49
6.10.3 Procedures p. 50
6.10.4 Impacts on services, entities, and interfaces p. 50
6.11 Solution #11: Interaction Enhancement between LCS and NWDAF p. 51
6.11.1 Introduction p. 51
6.11.2 Functional Description p. 51
6.11.3 Procedure p. 51
6.11.4 Impacts on services, entities, and interfaces p. 52
6.12 Solution #12: Supporting analytics for location accuracy p. 52
6.12.1 Description p. 52
6.12.2 Procedures p. 53
6.12.3 Impacts on services, entities and interfaces p. 57
6.13 Solution #13: Architecture enhancement for the interaction between LCS and NWDAF p. 57
6.13.1 Introduction p. 57
6.13.2 Architecture p. 58
6.13.3 Procedures p. 58
6.13.4 Impacts on existing entities and interfaces p. 61
6.13.4.1 Impacts on AMF p. 61
6.13.4.2 Impacts on NWDAF p. 61
6.14 Solution #14: Unawareness positioning p. 61
6.14.1 Introduction p. 61
6.14.2 Functional Description p. 61
6.14.3 Procedures p. 62
6.14.4 Impacts on services, entities, and interfaces p. 63
6.15 Solution #15: PRU assisted LCS architecture and procedure p. 64
6.15.1 Introduction p. 64
6.15.2 Functional Description p. 64
6.15.2.1 PRU Information p. 64
6.15.2.2 PRU Information Acquisition p. 64
6.15.2.3 PRU (de)/Activation p. 65
6.15.2.4 CM-IDLE/RRC-Inactive PRU(s) Utilization p. 65
6.15.3 Procedures p. 65
6.15.3.0 Architecture Assumption p. 65
6.15.3.1 PRU Management p. 66
6.15.3.2 PRU Activation/Deactivation p. 68
6.15.3.3 Location service procedure by using PRU(s) p. 68
6.15.4 Impacts on services, entities, and interfaces p. 73
6.16 Solution #16: Support of Positioning Reference Units p. 74
6.16.1 Introduction p. 74
6.16.2 Functional Description p. 74
6.16.3 Procedures p. 75
6.16.3.1 PRU Registration p. 75
6.16.3.2 PRU Utilization p. 76
6.16.4 Impacts on services, entities, and interfaces p. 77
6.17 Solution #17: Support for 5GS Localization via Reference UE p. 77
6.17.1 Introduction p. 77
6.17.2 Functional Description p. 77
6.17.3 Procedures p. 78
6.17.4 Impacts on services, entities and interfaces p. 79
6.18 Solution #18: Location Verification for Satellite Access assisted by NWDAF Analytics p. 79
6.18.1 Introduction p. 79
6.18.2 Functional description p. 79
6.18.3 Procedures p. 80
6.18.4 Impacts on services, entities and interfaces p. 81
6.19 Solution #19: Support of Low Latency via User Plane p. 82
6.19.1 Introduction p. 82
6.19.2 Functional Description p. 82
6.19.2.1 Architecture p. 82
6.19.2.2 Protocol Layering p. 82
6.19.3 Procedures p. 83
6.19.3.1 Event Reporting from a UE directly to an LCS Client or AF p. 83
6.19.3.2 Event Reporting from a UE to an LCS Client or AF via an H-GMLC p. 84
6.19.3.3 Event Reporting from a UE to an LCS Client or AF via an LMF p. 86
6.19.3.4 Cancellation of Event Reporting p. 88
6.19.4 Impacts on services, entities, and interfaces p. 88
6.20 Solutions 20: NWDAF based Indoor or Outdoor in Location Services p. 89
6.20.1 Introduction p. 89
6.20.2 Solution Description p. 89
6.20.3 Procedures p. 90
6.20.4 Impacts on services, entities, and interfaces p. 91
6.21 Solution #21: Collection of nearby GNSS assistance data p. 91
6.21.1 Introduction p. 91
6.21.2 Functional Description p. 91
6.21.3 Procedures p. 92
6.21.3.1a GNSS assistance data collection from untrusted AF p. 92
6.21.3.1b GNSS assistance data collection from trusted AF p. 92
6.21.4 Impacts on services, entities, and interfaces p. 93
6.22 Solution #22: Support of LCS mobility when UE moves between NG-RAN nodes p. 93
6.22.1 Introduction p. 93
6.22.2 Functional Description p. 94
6.22.3 Procedure p. 94
6.22.4 Impacts on services, entities, and interfaces p. 96
6.23 Solution #23: Location Verification for Satellite Access assisted by TN access p. 96
6.23.1 Introduction p. 96
6.23.2 Functional Description p. 97
6.23.3 Procedures p. 97
6.23.4 Impacts on services, entities, and interfaces p. 98
6.24 Solution #24: UE Location Verification based on Obtained Information p. 98
6.24.1 Introduction p. 98
6.24.2 Functional Description p. 99
6.24.3 Procedures p. 99
6.24.4 Impacts on services, entities, and interfaces p. 100
6.25 Solution #25: Event Report in an Allowed Area p. 100
6.25.1 Introduction p. 100
6.25.2 Functional Description p. 100
6.25.3 Procedures p. 101
6.25.3.1 Event Report Allowed Area provided by UE p. 101
6.25.3.2 Event Report in an Allowed Area p. 101
6.25.3.3 Add a new trigger for Cancellation of Reporting of Location Events by a UE p. 101
6.25.4 Impacts on services, entities, and interfaces p. 101
6.26 Solution #26: LPHAP requirement awareness by LMF p. 102
6.26.1 Introduction p. 102
6.26.2 Functional Description p. 102
6.26.3 Procedures p. 103
6.26.4 Impacts on services, entities, and interfaces p. 103
6.27 Solution #27: Use Group Information to Correlate GMLC and LMF p. 104
6.27.1 Introduction p. 104
6.27.2 Functional Description p. 104
6.27.3 Procedures p. 106
6.27.4 Impacts on services, entities, and interfaces p. 106
6.28 Solution #28: Support of PRUs p. 107
6.28.1 Introduction p. 107
6.28.2 Functional Description p. 107
6.28.2.1 Architecture p. 107
6.28.2.2 Protocol Layering p. 108
6.28.2.3 Multiple LMF Association p. 108
6.28.3 Procedures p. 109
6.28.3.1 Registration Procedure p. 109
6.28.3.2 Registration Modification Procedure p. 111
6.28.3.3 Positioning Procedure for a PRU p. 112
6.28.4 Impacts on services, entities, and interfaces p. 112
6.29 Solution #29: Use PRU in 5G LCS Procedures p. 112
6.29.1 Introduction p. 112
6.29.2 Functional Description p. 113
6.29.3 Procedures p. 114
6.29.4 Impacts on services, entities, and interfaces p. 115
6.30 Solution #30: location service continuity for UE moves between NG-RAN nodes p. 116
6.30.1 Introduction p. 116
6.30.2 Functional description p. 116
6.30.3 Procedures p. 117
6.30.3.1 Location Service Continuity for UE moves in RRC-inactive p. 117
6.30.3.2 Location Service Continuity for UE moves in CM-connected with RRC-connected p. 119
6.30.3.2.1 Xn handover p. 119
6.30.3.2.2 N2 handover p. 120
6.30.3.3 Location Service Continuity for UE moves in CM-IDLE p. 121
6.30.4 Impacts on services, entities, and interfaces p. 121
6.31 Solution #31: location service continuity between EPS and 5GS (bi-direction) p. 122
6.31.1 Introduction p. 122
6.31.2 Functional description p. 122
6.31.3 Architecture Assumption p. 122
6.31.4 Procedures p. 124
6.31.4.1 Location Service Continuity from 5GS to EPS p. 124
6.31.4.2 Location Service Continuity from EPS to 5GS p. 126
6.31.5 Impacts on services, entities, and interfaces p. 126
6.32 Solution #32: LCS continuity Support for N26 based Handover p. 127
6.32.1 Introduction p. 127
6.32.2 Functional Description p. 127
6.32.3 Procedures p. 127
6.32.3.1 LCS support during Handover from 5GS to EPS p. 127
6.32.3.2 LCS support during Handover from EPS to 5GS p. 129
6.32.4 Impacts on services, entities, and interfaces p. 131
6.33 Solution #33: Support of LCS mobility when UE moves between 5GS and EPS p. 131
6.33.1 Introduction p. 131
6.33.2 Functional Description p. 132
6.33.3 Procedure p. 132
6.33.4 Impacts on services, entities, and interfaces p. 135
6.34 Solution #34: UE location determination for Mobility Restriction enforcement p. 135
6.34.1 Introduction p. 135
6.34.2 Functional Description p. 135
6.34.3 Procedure p. 136
6.34.4 Impacts on services, entities, and interfaces p. 136
6.35 Solution #35: Support reporting the UE location only when the UE locates the target area defined with the finer granularity p. 137
6.35.1 Introduction p. 137
6.35.2 Functional Description p. 137
6.35.3 Procedures p. 137
6.35.4 Impacts on services, entities, and interfaces p. 141
7 Evaluation p. 141
7.1 Key Issue #1: Architectural Enhancement to support User Plane positioning p. 141
7.2 Key Issue #2: enhanced positioning architecture for NPN deployment p. 144
7.3 Key Issue #3: Local Area Restriction for an LMF and GMLC p. 144
7.4 Key Issue #4: Interaction between Location Service and NWDAF p. 145
7.5 Key Issue #5: Assistance data provisioning for low power high accuracy GNSS positioning p. 146
7.6 Key Issue #6: UE Positioning without UE/User Awareness p. 146
7.7 Key Issue #7: Support of Positioning Reference Units and Reference UEs p. 147
7.8 Key Issue #8: support of location service continuity in case of UE mobility p. 150
7.9 Key Issue #9: Support of Positioning Requirements Related to Satellite Access p. 151
7.10 Key Issue #10: Support of Reduced Latency p. 153
7.11 Key Issue #11: Enhance the Triggered Location for UE power saving purpose p. 153
8 Conclusions p. 154
8.1 Key Issue #1: Architectural Enhancement to support User Plane positioning p. 154
8.2 Key Issue #2: enhanced positioning architecture for NPN deployment p. 155
8.3 Key Issue #3: Local Area Restriction for an LMF and GMLC p. 155
8.4 Key Issue #4: Interaction between Location Service and NWDAF p. 156
8.5 Key Issue #5: Assistance data provisioning for low power high accuracy GNSS positioning p. 157
8.6 Key Issue #6: UE Positioning without UE/User Awareness p. 157
8.7 Key Issue #7: Support of Positioning Reference Units and Reference UEs p. 157
8.8 Key Issue #8: Support of location service continuity in case of UE mobility p. 158
8.9 Key Issue #9: Support of Positioning Requirements Related to Satellite Access p. 159
8.10 Key Issue #10: Support of Reduced Latency p. 159
8.11 Key Issue #11: Enhance the Triggered Location for UE power saving purpose p. 159
8.12 Key Issue #12: support of low power and/or high accuracy positioning p. 160
$ Change history p. 161
