Content for TR 32.847 Word version: 18.0.0
6 Key Issues
6.1 Key Issue #1: Converged Charging for simultaneous number of UEs/max. number of UEs per network slice
6.2 Key Issue #2: Converged Charging for simultaneous number of PDU sessions/max. number of PDU sessions per network slice
6.3 Key Issue #3: Volume based Converged Charging per network slice
6.6 Key Issue #6: UE Converged Charging based on network slice charging
6.7 Key Issue #7: Converged Charging for actual duration per network slice
6.8 Key Issue #8: Converged Charging for NSSAA
6.9 Key Issue #9: Service based interface between UE CCS and Tenant CCS
6.10 Key Issue #10: Network slice charging based on the Tenant
7 Conclusions and recommendations
$ Change history
6 Key Issues p. 16
6.1 Key Issue #1: Converged Charging for simultaneous number of UEs/max. number of UEs per network slice p. 16
6.1.0 General Description p. 16
6.1.1 Solution#1.1 New NetworkSliceConvergedCharging service to NSACF - quota request beyond "max Nb of Reg UEs" p. 17
6.1.2 Solution#1.2 NSACF (CTF) - Event based charging p. 20
6.1.2.1 General p. 20
6.1.2.2 Charging information p. 20
6.1.2.3 Trigger mechanism p. 20
6.1.2.4 Architecture description p. 20
6.1.2.5 Flow description p. 20
6.1.3 Solution#1.3 NSACF (CTF) - Session based charging p. 21
6.1.3.1 General p. 21
6.1.3.2 Charging information p. 22
6.1.3.3 Trigger mechanism p. 22
6.1.3.4 Architecture description p. 22
6.1.3.5 Flow description p. 22
6.1.3.6 Charging scenarios p. 24
6.1.4 Solution#1.4 NSACF and CEF - Event based charging p. 25
6.1.5 Solution#1.5 NSACF and CEF - Session based charging p. 27
6.1.6 Solution#1.6 New NSACF (CTF) - NS_quota management by CCS p. 28
6.1.6.1 General Description p. 28
6.1.6.2 Architecture Description p. 28
6.1.6.3 Flow description p. 28
6.1.7 Evaluation p. 30
6.1.8 Conclusion p. 31
6.2 Key Issue #2: Converged Charging for simultaneous number of PDU sessions/max. number of PDU sessions per network slice p. 32
6.2.0 General Description p. 32
6.2.1 Solution#2.1 NSACF (CTF) - Event based charging p. 32
6.2.1.1 General p. 32
6.2.2 Solution#2.2 NSACF (CTF) - Session based charging p. 33
6.2.2.1 General p. 33
6.2.3 Solution#2.3 NSACF and CEF - Event based charging p. 33
6.2.3.1 General p. 33
6.2.4 Solution#2.4 NSACF and CEF - Session based charging p. 33
6.2.5 Solution#2.5 NSACF (CTF) - NS quota management p. 33
6.2.6 Evaluation p. 33
6.2.7 Conclusion p. 34
6.3 Key Issue #3: Volume based Converged Charging per network slice p. 34
6.3.1 General Description p. 34
6.3.2 Solution#3.1 Volume aggregation by NS Tenant CCS p. 34
6.3.2.1 General description p. 34
6.3.2.2 Architecture description p. 35
6.3.2.3 Flow description (Tenant specific S-NSSAI) p. 36
6.3.2.4 Flow description (Shared S-NSSAI) p. 38
6.3.3 Solution#3.2 Volume control by CCS based on performance collection p. 38
6.3.3.1 General description p. 38
6.3.3.2 Architecture description p. 39
6.3.3.3 Flow description p. 39
6.3.4 Evaluation p. 40
6.3.5 Conclusions p. 41
6.4 Void
6.5 Void
6.6 Key Issue #6: UE Converged Charging based on network slice charging p. 41
6.6.1 General Description p. 41
6.6.2 Solution#6.1 NS Tenant CCS separated from UE CCS p. 42
6.6.2.1 General description p. 42
6.6.2.2 Architecture description p. 43
6.6.2.3 Flow description p. 43
6.6.3 Solution#6.2 NWDAF based Network slice charging p. 46
6.6.3.1 General description p. 46
6.6.3.2 Architecture description p. 47
6.6.3.3 Flow description p. 47
6.6.4 Solution#6.3 NSACF based Network slice charging - CEF based p. 47
6.6.4.1 General description p. 47
6.6.4.2 Architecture description p. 47
6.6.4.3 Flow description p. 48
6.6.5 Solution#6.4 NSACF based Network slice charging - CTF based p. 52
6.6.5.1 General description p. 52
6.6.5.2 Architecture description p. 52
6.6.5.3 Flow description p. 53
6.6.6 Evaluation p. 55
6.6.7 Conclusion p. 55
6.7 Key Issue #7: Converged Charging for actual duration per network slice p. 55
6.7.0 General Description p. 55
6.7.1 Solution#7.1 Duration determination by NS Tenant CCS p. 55
6.7.1.1 General description p. 55
6.7.1.2 Architecture description p. 55
6.7.1.3 Flow description p. 56
6.7.2 Solution#7.2 Network slice actual duration charging from the SMF p. 57
6.7.2.1 General description p. 57
6.7.2.2 Architecture description p. 57
6.7.2.3 Flow description p. 57
6.7.3 Solution#7.3 Network slice actual duration charging from the NSACF p. 58
6.7.3.1 General description p. 58
6.7.3.2 Architecture description p. 58
6.7.3.3 Flow description p. 58
6.7.4 Solution#7.4 Network slice actual duration charging from the NWDAF p. 60
6.7.4.1 General description p. 60
6.7.4.2 Architecture description p. 60
6.7.4.3 Flow description p. 60
6.7.5 Evaluation p. 61
6.7.6 Conclusions p. 61
6.8 Key Issue #8: Converged Charging for NSSAA p. 61
6.8.1 General Description p. 61
6.8.2 Solution#8.1 Converged Charging for NSSAA p. 62
6.8.2.1 General description p. 62
6.8.2.2 Architecture description p. 62
6.8.2.3 Flow description p. 62
6.8.3 Solution#8.2 Converged Charging for NSSAA from AAA-P p. 64
6.8.3.1 General description p. 64
6.8.3.2 Architecture description p. 64
6.8.3.3 Flow description p. 64
6.8.4 Evaluation p. 66
6.8.5 Conclusion p. 66
6.9 Key Issue #9: Service based interface between UE CCS and Tenant CCS p. 66
6.9.1 General Description p. 66
6.9.2 Solution #9.1 Reusing Nchf_ConvergedCharging service between UE CHF and Tenant CHF p. 66
6.9.2.1 General description p. 66
6.9.2.2 Architecture description p. 67
6.9.2.3 Flow description p. 67
6.9.3 Solution #9.2 New charging service API between UE CHF and Tenant CHF p. 67
6.9.3.1 General description p. 67
6.9.3.2 Architecture description p. 67
6.9.3.3 Flow description p. 67
6.9.4 Evaluation p. 68
6.9.5 Conclusion p. 68
6.10 Key Issue #10: Network slice charging based on the Tenant p. 68
7 Conclusions and recommendations p. 69
$ Change history p. 71
