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Content for  TR 32.899  Word version:  15.1.0

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2  References

3  Definitions, symbols and abbreviationsWord‑p. 11

4  High-level description and potential requirementsWord‑p. 12

5  TopicsWord‑p. 17

5.1  Session management and service continuity

5.1.1  Description and assumptions

5.1.2  Potential requirements

5.1.3  Key issues

5.1.4  Solutions

5.1.4.1  Solution#1.1: PDU session charging from SMF

5.1.4.2  Solution#1.2: PDU session charging SSC Mode 1 from SMF

5.1.4.3  Solution#1.3: PDU session Charging SSC Mode 2 from SMF - CH session update

5.1.4.4  Solution#1.4: PDU session Charging SSC Mode 2 from SMF - new CH sessionWord‑p. 25

5.1.4.5  Solution#1.5: PDU session Charging SSC Mode 3 from SMF - CH session updateWord‑p. 26

5.1.4.6  Solution#1.6: PDU session Charging SSC Mode 3 from SMF - New CH sessionWord‑p. 28

5.1.4.7  Solution#1.7: PDU session Charging SSC Mode 3 Multi Homed from SMF - CH session updateWord‑p. 30

5.1.4.8  Solution#1.8: PDU session Charging SSC Mode 3 Multi Homed from SMF - New CH sessionWord‑p. 32

5.1.5  Evaluation and conclusion

5.2  QoS

5.3  Interaction between SMF and UPF

5.3.1  Description and assumptions

5.3.2  Potential requirements

5.3.3  Key issuesWord‑p. 39

5.3.4  Solutions

5.3.4.1  Solution#3.1: The reporting and quota management in the separation SMF and UPF

5.3.4.2  Solution#3.2: PDU session charging - counts in BP/UL CL UPF only

5.3.4.3  Solution#3.3: PDU session charging - counts in two UPFs - single CH sessionWord‑p. 49

5.3.4.4  Solution#3.4: The reporting and quota management SSC mode 2 - CH session update

5.3.4.5  Solution#3.5: The reporting and quota management - in multiple UPFs (parallel traffic)

5.3.4.6  Solution#3.6: Bytes counted as continuous timeWord‑p. 58

5.3.4.7Void

5.3.4.8  Solution#3.8: Charging at SMF and usage monitoring over N4

5.3.4.9  Solution#3.9: PDU session charging - counts in UPFs - single CH session

5.3.4.10  Solution#3.10: The reporting and quota management SSC mode 2 - New CH sessionWord‑p. 65

5.3.5  Overall evaluation and conclusionWord‑p. 66

5.4  Network Slicing

5.4.1  Description and assumptions

5.4.2  Potential requirementsWord‑p. 68

5.4.3  Key issues

5.4.4  SolutionsWord‑p. 69

5.4.5  ConclusionsWord‑p. 75

5.5  Network Capability Exposure

5.6  RoamingWord‑p. 80

5.6.1  Description and assumption

5.6.2  Potential requirements

5.6.3  Key issues

5.6.4  SolutionsWord‑p. 81

5.6.4.1  Solution #6.1: PDU session charging from SMF in roaming LBO - CH in VPLMN

5.6.4.2  Solution #6.2: PDU session charging from SMF in roaming LBO - CH in HPLMN

5.6.4.3  Solution #6.3: PDU session charging from SMFs in Home RoutedWord‑p. 84

5.6.4.4  Solution #6.4: PDU session charging from SMF in roaming LBO - CH in HPLMN and VPLMNWord‑p. 88

5.6.5  Overall evaluation and conclusion

5.7  Service-based architectureWord‑p. 90

5.8  Interworking between 5G System and existing systemsWord‑p. 93

5.9  Online and offline charging evaluation

5.10  Connection, registration and mobility management

6  Conclusions and recommendations

$  Change HistoryWord‑p. 104


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