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Content for TR 32.844 Word version: 12.0.0

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2 References p. 5

3 Definitions, symbols and abbreviations p. 7

3.1 Definitions p. 7

3.2 Symbols p. 7

3.3 Abbreviations p. 7

4 Architecture considerations p. 8

4.1 ProSe one-to-many Direct Communication scenarios and assumptions p. 8

4.1.1 ProSe one-to-many Direct Communication scenarios p. 8

4.1.2 ProSe one-to-many Direct Communication assumptions p. 10

4.1.3 RAN aspects of ProSe one-to-many Direct Communication assumptions p. 10

4.1.4 Requirements for ProSe one-to-many Direct Communication charging support p. 10

4.2 Charging architecture for ProSe one-to-many Direct Communication p. 11

4.2.1 General principles p. 11

4.2.2 Offline charging architecture for ProSe Direct Communication p. 11

4.2.3 Online Charging architecture for ProSe Direct Communication p. 13

5 Charging principles and scenarios for ProSe one-to-many Direct Communication p. 14

5.1 Basic charging principles p. 14

5.1.1 General p. 14

5.1.2 Requirements p. 14

5.2 Charging operation and scenarios p. 14

5.2.1 Basic principles p. 14

5.2.1.1 General p. 14

5.2.1.2 ProSe one-to-many Direct Communication charging p. 14

5.2.2 Rf message flows p. 15

5.2.2.1 Offline charging message flow for ProSe one-to-many Direct Communication p. 15

5.2.2.1.1 Triggers for charging events at ProSe Function p. 15

5.2.2.1.1.1 Triggers for charging events at ProSe Function for event based charging p. 15

5.2.2.1.1.2 Triggers for charging events at ProSe Function for session based charging p. 15

5.2.2.1.2 Message flow for ProSe one-to-many Direct Communication when the UE is under coverage of E-UTRAN (event based) p. 15

5.2.2.1.3 Message flow for ProSe one-to-many Direct Communication when the UE is out of coverage of E-UTRAN (event based) p. 17

5.2.2.1.4 Message flow for ProSe one-to-many Direct Communication when the UE is under coverage of E-UTRAN (session based) p. 18

5.2.2.1.5 Message flow for ProSe one-to-many Direct Communication when the UE is out of coverage of E-UTRAN (session based) p. 20

5.2.3 CDR generation p. 23

5.2.3.1 Triggers for PF-DC-CDR creation and closure p. 23

5.2.3.1.1 General p. 23

5.2.3.1.2 Triggers for PF-DC-CDR charging information addition p. 23

5.2.3.1.3 Triggers for PF-DC-CDR closure p. 23

5.2.4 Ga record transfer flows p. 23

5.2.5 Bx CDR file transfer p. 23

5.2.6 Direct Communication Data Container definition p. 23

5.3 Data selection for one-to-many Direct Communication charging support p. 24

5.3.1 Agreed principles and working assumptions p. 24

5.3.2 Usage information to be collected p. 25

6 Recommendations p. 25

$ Change History p. 27