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Content for TR 28.845 Word version: 18.0.0

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5.1 Scenario 1: 5GS charging for Ranging/Sidelink Positioning UE Discovery 5.2 Scenario 2: 5GS charging for UE positioning assisted by Sidelink Positioning and involving 5GC 5.3 Scenario 3: 5GS charging for UE only Sidelink Positioning for Target UE using Located UE 5.4 Scenario 4: 5GS charging for Ranging/SL Positioning service exposure

5 Charging scenarios and key issues p. 9

5.1 Scenario 1: 5GS charging for Ranging/Sidelink Positioning UE Discovery p. 9

5.1.1 General description and assumptions p. 9

5.1.1.1 Use Case #1.1: RSL-MNO charging RSL-SC based on usage p. 9

5.1.2 Potential charging requirements p. 9

5.1.3 Key issues p. 10

5.1.4 Possible solutions p. 10

5.1.4.1 Solution #1.1: Charging Trigger Function (CTF) based solution for Ranging Sidelink Positioning UE Discovery charging p. 10

5.1.4.1.1 General description p. 10

5.1.4.1.2 Architecture description p. 11

5.1.4.1.3 Charging procedures for Ranging/SL Positioning UE discovery with 5G ProSe capable UE p. 11

5.1.4.1.4 Charging procedures for Ranging/SL Positioning UE discovery with V2X capable UE p. 12

5.1.5 Evaluation p. 13

5.1.6 Conclusion p. 13

5.2 Scenario 2: 5GS charging for UE positioning assisted by Sidelink Positioning and involving 5GC p. 14

5.2.1 General description and assumptions p. 14

5.2.1.1 Use Case #2.1: RSL-SC charged by RSL-MNO based on usage p. 14

5.2.1.2 Use Case #2.2: RSL-MNO charged by RSL-SP based on usage p. 14

5.2.2 Potential charging requirements p. 14

5.2.3 Key issues p. 14

5.2.4 Possible solutions p. 15

5.2.4.1 Solution # 2.1: GMLC Charging Trigger Function (CTF) based solution for mobile originated UE positioning assisted by Sidelink Positioning and involving 5GC charging - PEC p. 15

5.2.4.1.1 General description p. 15

5.2.4.1.2 Architecture description p. 15

5.2.4.1.3 Charging procedures for mobile originated UE positioning assisted by Sidelink Positioning and involving 5GC p. 16

5.2.4.2 Solution# 2.2: GMLC Charging Trigger Function (CTF) based solution for mobile terminated UE positioning assisted by Sidelink Positioning and involving 5GC charging - PEC p. 17

5.2.4.2.1 General description p. 17

5.2.4.2.2 Architecture description p. 17

5.2.4.2.3 Charging procedures for mobile terminated UE positioning assisted by Sidelink Positioning and involving 5GC p. 18

5.2.5 Evaluation p. 19

5.2.6 Conclusion p. 19

5.3 Scenario 3: 5GS charging for UE only Sidelink Positioning for Target UE using Located UE p. 19

5.3.1 General description and assumptions p. 19

5.3.1.1 Use Case #3.1: RSL-MNO charging subscriber based on usage p. 19

5.3.1.2 Use Case #3.2: RSL-MNO charged by RSL-SP based on usage p. 19

5.3.2 Potential charging requirements p. 19

5.3.3 Key issues p. 20

5.3.3.1 Key issue #1.1: Converged charging for UE only Sidelink Positioning for Target UE using Located UE p. 20

5.3.4 Possible solutions p. 20

5.3.4.1 Solution #3.1: Charging for UE-only Operation for SL Positioning using Located UE p. 20

5.3.4.1.1 General description p. 20

5.3.4.1.2 Architecture description p. 21

5.3.4.1.3 Flow Description p. 21

5.3.4.1.3.1 Message flows for UE-only Operation for SL Positioning using Located UE over PC5 charging CTF p. 21

5.3.5 Evaluation p. 22

5.3.6 Conclusion p. 22

5.4 Scenario 4: 5GS charging for Ranging/SL Positioning service exposure p. 22

5.4.1 General description and assumptions p. 22

5.4.1.1 Use Case #4.1: RSL-MNO charging subscriber based on usage p. 22

5.4.1.2 Use Case #4.2: RSL-MNO charged by RSL-SP based on usage p. 22

5.4.2 Potential charging requirements p. 23

5.4.3 Key issues p. 23

5.4.4 Possible solutions p. 23

5.4.4.1 Solution #4.1: Charging for SL Positioning Service Exposure to the Client UE through PC5 p. 23

5.4.4.1.1 General description p. 23

5.4.4.1.2 Architecture description p. 24

5.4.4.1.3 Flow Description p. 25

5.4.4.1.3.1 Message flows for SL Positioning Service Exposure to the Client UE through PC5 Charging p. 25

5.4.4.2 Solution #4.2: Charging for SL Positioning Service Exposure to the Client UE through 5GC network via NEF p. 25

5.4.4.2.1 General description p. 25

5.4.4.2.2 Architecture description p. 26

5.4.4.2.3 Flow Description p. 27

5.4.4.2.3.1 Message flows for SL Positioning Service Exposure to the Client UE through 5GC network via NEF Charging p. 27

5.4.4.3 Solution #4.3: Charging for SL Positioning Service Exposure to the Client UE through 5GC network via control plane p. 27

5.4.4.3.1 General description p. 27

5.4.4.3.2 Architecture description p. 28

5.4.4.3.3 Flow Description p. 28

5.4.4.3.3.1 Message flows for SL Positioning Service Exposure to the Client UE through 5GC network via control plane charging p. 28

5.4.4.4 Solution #4.4: Charging for SL Positioning Service Exposure to the trusted AF or LCS client p. 29

5.4.4.4.1 General description p. 29

5.4.4.4.2 Architecture description p. 30

5.4.4.4.3 Flow Description p. 31

5.4.4.4.3.1 Message flows for SL Positioning Service Exposure to the trusted AF or LCS Client charging p. 31

5.4.4.5 Solution #4.5: Charging for SL Positioning Service Exposure to Trusted AF p. 31

5.4.4.5.1 General description p. 31

5.4.4.5.2 Architecture description p. 32

5.4.4.5.3 Flow Description p. 33

5.4.4.5.3.1 Message flows for SL Positioning Service Exposure to Trusted AF charging p. 33

5.4.5 Evaluation p. 33

5.4.6 Conclusion p. 33

6 Conclusions and Recommendations p. 33

$ Change history p. 35