Content for TR 23.703 Word version: 12.0.0
6 Solutions p. 30
6.1 ProSe discovery p. 30
6.1.1 Solution D1: LTE based solution for direct discovery p. 30
6.1.1.1 Architecture reference model p. 30
6.1.1.2 High Level Functions p. 31
6.1.1.2.1 Authorization and configuration for ProSe direct services p. 31
6.1.1.2.2 Resource Configuration p. 33
6.1.1.2.3 ProSe direct discovery p. 34
6.1.1.2.4 Operational aspects p. 37
6.1.1.3 Impact on existing entities and interfaces p. 37
6.1.1.4 Solution evaluation p. 37
6.1.2 Solution D2: Solution for direct discovery p. 37
6.1.2.1 Overview p. 37
6.1.2.2 Signalling Flow p. 38
6.1.2.3 Impact on existing entities and interfaces p. 39
6.1.2.4 Solution evaluation p. 39
6.1.3 Solution D3: Targeted ProSe discovery p. 40
6.1.4 Solution D4: EPC-level ProSe discovery p. 42
6.1.4.1 Functional description p. 42
6.1.4.1.1 General p. 42
6.1.4.1.2 System architecture p. 43
6.1.4.1.3 Architecture for Cross-PLMN EPC-level ProSe discovery p. 44
6.1.4.1.4 Roaming Architecture p. 45
6.1.4.2 Procedures p. 45
6.1.4.2.1 Overall call flow for EPC-level ProSe discovery p. 45
6.1.4.2.2 UE registration with ProSe Function p. 45
6.1.4.2.3 UE makes a Proximity Request p. 46
6.1.4.2.4 UE Location Reporting p. 47
6.1.4.2.5 Proximity Alert p. 48
6.1.4.3 Impact on existing entities and interfaces p. 49
6.1.4.4 Solution evaluation p. 49
6.1.5 Solution D5: IMS based ProSe architecture p. 50
6.1.5.1 Functional description p. 50
6.1.5.1.0 General p. 50
6.1.5.1.1 IMS based ProSe Architecture p. 51
6.1.5.1.2 EPC based ProSe discovery using Presence Service p. 52
6.1.5.2 Procedures p. 54
6.1.5.2.1 Registration p. 54
6.1.5.2.2 Network initiated Discovery (within network coverage) p. 55
6.1.5.2.3 UE initiated Discovery (within network coverage) p. 56
6.1.5.2.4 Network supported D2D Communication (within network coverage) p. 57
6.1.5.2.5 Direct D2D Communication (out of network coverage) p. 58
6.1.5.2.6 Discovery procedures using Publish-Notify mechanism p. 58
6.1.5.3 ProSe Identities and Attributes p. 61
6.1.5.4 Impact on existing entities and interfaces p. 62
6.1.5.5 Solution evaluation p. 62
6.1.6 Solution D6: Targeted Discovery based on application-defined ProSe Application ID and system provided ProSe UE ID p. 62
6.1.6.1 Functional description p. 62
6.1.6.2 Procedures p. 63
6.1.6.3 Impact on existing entities and interfaces p. 65
6.1.6.4 Solution evaluation p. 65
6.1.7 Solution D7: Non targeted Discovery based on application-defined ProSe Application Identity and system provided ProSe UE ID p. 65
6.1.7.1 Functional description p. 65
6.1.7.2 Procedures p. 66
6.1.7.3 Impact on existing entities and interfaces p. 67
6.1.7.4 Solution evaluation p. 67
6.1.8 Solution D8: Network based solution for ProSe discovery p. 67
6.1.8.1 Architecture reference model p. 67
6.1.8.2 High Level Functions p. 68
6.1.8.2.1 Authorisation for ProSe services p. 68
6.1.8.2.2 ProSe ID allocation p. 68
6.1.8.2.3 Signalling flow for ProSe registration p. 68
6.1.8.2.4 Targeted ProSe discovery procedure p. 70
6.1.8.3 Solution evaluation p. 71
6.1.9 Solution D9: Proximity service Architecture using PDCF p. 71
6.1.9.1 Architecture reference model p. 71
6.1.9.2 Procedures p. 73
6.1.9.2.1 ProSe registration p. 73
6.1.9.2.2 ProSe direct Discovery p. 74
6.1.9.2.3 Network-triggered ProSe discovery Procedure p. 77
6.1.9.4 Impact on existing entities and interfaces p. 79
6.1.9.5 Solution Evaluation p. 79
6.1.10 Solution D10: ProSe System Architecture using ProSe Server p. 79
6.1.10.1 Architecture reference model p. 79
6.1.10.2 Procedures p. 83
6.1.10.3 Impact on existing entities and interfaces p. 83
6.1.10.4 Solution evaluation p. 83
6.1.11 Solution D11: ProSe discovery using the architecture of solution 13 p. 83
6.1.11.1 Functional description p. 83
6.1.11.2 Procedures p. 84
6.1.11.3 Impact on existing entities and interfaces p. 86
6.1.11.4 Solution evaluation p. 87
6.1.12 Solution D12: Network assisted ProSe discovery p. 87
6.1.12.1 Functional description p. 87
6.1.12.2 Procedures p. 87
6.1.12.3 Impact on existing entities and interfaces p. 89
6.1.12.4 Solution evaluation p. 89
6.1.13 Solution D13: Network controlled ProSe discovery service p. 89
6.1.13.1 Functional description p. 89
6.1.13.2 Subscription of ProSe discovery service p. 92
6.1.13.3 ProSe User Context creation p. 92
6.1.13.4 Configuration of the ProSe discovery user's preferences p. 92
6.1.13.5 ProSe_Code p. 94
6.1.13.6 ProSe discovery procedures (non-roaming) p. 95
6.1.13.6.1 Start ProSe discovery procedure p. 95
6.1.13.6.2 ProSe monitoring procedure p. 97
6.1.13.6.3 User initiated stop ProSe discovery procedure p. 98
6.1.13.6.4 Network initiated stop ProSe discovery procedure p. 98
6.1.13.7 ProSe discovery service in roaming scenarios p. 99
6.1.13.8 Impact on existing entities and interfaces p. 100
6.1.13.9 Solution Evaluation p. 100
6.1.14 Solution D14: EPC assisted direct discovery p. 101
6.1.14.1 Functional description p. 101
6.1.14.2 Procedures p. 102
6.1.14.2.1 Procedure for EPC assisted direct discovery p. 103
6.1.14.2.2 Procedure for EPC assisted direct discovery in an inter-PLMN scenario p. 104
6.1.14.3 Impact on existing entities and interfaces p. 105
6.1.14.4 Solution evaluation p. 105
6.1.15 Solution D15: EPC-level ProSe discovery p. 106
6.1.15.1 Functional description p. 106
6.1.15.1.1 General p. 106
6.1.15.1.2 Description regarding requests for ProSe discovery with time window p. 106
6.1.15.1.3 Description regarding EPC-level ProSe discovery within the different PLMNs in network sharing case p. 106
6.1.15.2 Procedures p. 106
6.1.15.2.1 EPC-level ProSe discovery with time window (both discoverer and discoveree are registered to the same PLMN and non-roaming) p. 106
6.1.15.2.2 EPC-level ProSe discovery with time window (both discoverer and discoveree are registered to the same PLMN and discoverer is roaming) p. 109
6.1.15.2.3 EPC-level ProSe discovery with time window (both discoverer and discoveree are registered to the same PLMN and discoveree is roaming) p. 113
6.1.15.2.4 EPC-level ProSe discovery within the different PLMNs in network sharing case (both discoverer and discoveree are non-roaming) p. 117
6.1.15.3 Impact on existing entities and interfaces p. 121
6.1.15.4 Solution evaluation p. 121
6.1.16 Solution D16 (consolidation of D3/D6/D7): ProSe Discovery through Communication (DtC) p. 121
6.1.16.1 Functional description p. 121
6.1.16.1.1 General p. 121
6.1.16.1.2 System architecture p. 121
6.1.16.1.3 Identifiers for ProSe Discovery through Communication p. 122
6.1.16.2 Procedures p. 122
6.1.16.2.1 Allocation and handling of ProSe UE ID and ProSe_Code in ProSe Discovery through Communication (DtC) p. 122
6.1.16.2.2 Procedures for discovery proper p. 125
6.1.16.3 Impact on existing entities and interfaces p. 129
6.1.16.4 Solution evaluation p. 129
6.1.17 Solution D17: Targeted ProSe discovery p. 129
