5.2.2.1.1  Triggers for charging events from ProSe Function for ProSe Direct Discovery  p. 30

5.2.2.1.2  Message flow for ProSe Direct Discovery Announce Request  p. 30

5.2.2.1.3  Message flow for ProSe Direct Discovery Monitor Request  p. 33

5.2.2.1.4  Message flow for ProSe Direct Discovery Match Report  p. 35

5.2.2.1.5  Message flow for Discovery Request - Model B procedures |R14|  p. 40

5.2.2.1.6  Message flow for Discovery reporting - Model B procedures |R14|  p. 45

5.2.2.1.7  Message flow for ProSe Direct Discovery for Public Safety use when the UE is under coverage |R14|  p. 47

5.2.2.1.8  Message flow for ProSe Direct Discovery for Public Safety use when the UE is out of coverage |R14|  p. 48

5.2.2.2.1  Triggers for charging events  p. 49

5.2.2.2.2  Message flow for ProSe EPC-level Discovery Proximity Request  p. 49

5.2.2.2.3  Message flow for ProSe EPC-level Discovery Proximity Request Cancellation  p. 50

5.2.2.3.1  Triggers for charging events at ProSe Function  p. 51

5.2.2.3.2  Message flow for ProSe one-to-many Direct Communication when the UE is under coverage of E-UTRAN (event based)  p. 52

5.2.2.3.3  Message flow for ProSe one-to-many Direct Communication when the UE is out of coverage of E-UTRAN (event based)  p. 53

5.2.2.3.4  Message flow for ProSe one-to-many Direct Communication when the UE is under coverage of E-UTRAN (session based)  p. 55

5.2.2.3.5  Message flow for ProSe one-to-many Direct Communication when the UE is out of coverage of E-UTRAN (session based)  p. 57

5.2.2.3.6  Message flow for Direct communication via ProSe UE-to-Network Relay(event based) |R14|  p. 59

5.2.2.3.7  Message flow for ProSe one-to-one direct communication when the UE is under coverage (event based) |R14|  p. 61

5.2.2.3.8  Message flow for ProSe one-to-one direct communication when the UE is out of coverage (event based) |R14|  p. 62

5.2.2.3.9  Void

5.2.2.3.10  Message flow for ProSe one-to-one Direct Communication when the UE is under coverage (session based) |R14|  p. 64

5.2.2.3.11  Message flow for ProSe one-to-one Direct Communication when the UE is out of coverage (session based) |R14|  p. 66

5.2.2.3.12  Void

5.2.2.3.13  Void

5.2.3.1.1  General  p. 67

5.2.3.1.2  Triggers for PF-DC-CDR charging information addition  p. 67

5.2.3.1.3  Triggers for PF-DC-CDR closureThe PF-DC-CDR shall be closed on encountering any of the following trigger conditions: |R14|  p. 68

5.3.2.2.1  Triggers for online charging from ProSe Function for ProSe Direct Discovery  p. 70

5.3.2.2.2  Message flows for ProSe Direct Discovery Announce Request  p. 70

5.3.2.2.3  Message flows for ProSe Direct Discovery Monitor Request  p. 74

5.3.2.2.4  Message flows for ProSe Direct Discovery Match Report Request  p. 78

5.3.2.2.5  Message flow for Discovery Request - Model B procedures |R14|  p. 88

5.3.2.2.6  Message flow for Discovery reporting - Model B procedures |R14|  p. 95

5.3.2.3.1  Triggers for ProSe EPC-level Discovery online charging  p. 98

5.3.2.3.2  Message flow for ProSe EPC-level Discovery Proximity Request  p. 99

5.3.2.3.3  Message flow for ProSe EPC-level Discovery Proximity Request Cancellation  p. 101

5.4.2.2.1  Triggers for converged charging for 5G ProSe Direct Discovery  p. 103

5.4.2.2.2  Message flows for ProSe Direct Discovery Request - PEC  p. 105

5.4.2.2.3  Message flows for ProSe Direct Discovery Report - PEC  p. 106

5.4.2.2.4  Message flows for ProSe Direct Discovery over PC5 reference point (PEC)  p. 107

5.4.2.2.5  Message flows for ProSe Direct Discovery Request - ECUR  p. 107

5.4.2.2.6  Message flows for ProSe Direct Discovery Report - ECUR  p. 109

5.4.2.7.1  Triggers for converged charging for 5G ProSe Direct Communication  p. 110

5.4.2.7.2  Message flows for ProSe Unicast Direct Communication - PEC  p. 111

5.4.2.7.3  Message flows for ProSe Unicast Direct Communication - SCUR  p. 112

5.4.2.7.4  Message flows for ProSe Broadcast Direct Communication - PEC  p. 114

5.4.2.7.5  Message flows for ProSe Broadcast Direct Communication - SCUR  p. 115

5.4.2.7.6  Message flows for ProSe Groupcast Direct Communication - PEC  p. 116

5.4.2.7.7  Message flows for ProSe Groupcast Direct Communication - SCUR  p. 116

5.4.2.7.8  Message flows for ProSe UE-to-Network Direct Communication - PEC  p. 117

5.4.3.2.1  General  p. 119

5.4.3.2.2  Triggers for CHF CDR charging information addition  p. 119

5.4.3.2.3  Triggers for CHF CDR generation  p. 119

5.4.3.2.4  Triggers for CHF CDR opening  p. 119

5.4.3.2.5  Triggers for CHF CDR update  p. 119

5.4.3.2.6  Triggers for CHF CDR closure  p. 119