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Content for TR 28.822 Word version: 17.0.0

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4.1 General 4.2 5G LAN-type Architecture 4.3 5G Virtual Network Group Management 4.4 5G Virtual Network Group Communication 5.1 Topic 1: Converged charging for 5G VN group management 5.2 Topic 2: Converged charging for traffic forwarding of 5G VN group communication 5.3 Topic 3: Converged charging for 5G VN Group Communication 5.4 Topic 4: Charging the usage of 5G VN group communication

4 Background p. 8

4.1 General p. 8

4.2 5G LAN-type Architecture p. 8

4.3 5G Virtual Network Group Management p. 10

4.4 5G Virtual Network Group Communication p. 10

5 Topics p. 10

5.1 Topic 1: Converged charging for 5G VN group management p. 10

5.1.1 Use Case p. 10

5.1.1.1 Use Case #1.1: 5G VN group data management via AF p. 10

5.1.1.2 Use Case #1.2: OAM-based 5G VN group data management p. 11

5.1.2 Potential charging requirements p. 11

5.1.3 Key issues p. 11

5.1.3.1 Key issue #1.1: Chargeable events and charging information required p. 11

5.1.3.2 Key issue #1.2: NF/Service suitable to provide charging information p. 11

5.1.4 Solutions p. 11

5.1.4.1 Solution #1.1: Add the NEF based Solution for 5G VN Group p. 11

5.1.4.1.1 General description p. 11

5.1.4.1.2 Architecture description p. 12

5.1.4.1.3 Procedures description p. 12

5.1.4.2 Solution #1.2: Add the UDM based solution for 5G VN Group p. 13

5.1.4.2.1 General description p. 13

5.1.4.2.2 Solution #1.2.1: UDM Charging Enablement Function(CEF) based solution p. 13

5.1.4.2.2.1 Architecture description p. 13

5.1.4.2.2.2 Procedures description p. 14

5.1.5 Evaluation p. 15

5.1.5.1 Solutions evaluation for Key issue #1.1 p. 15

5.1.5.2 Solutions evaluation for Key issue #1.2 p. 15

5.1.6 Conclusion p. 15

5.2 Topic 2: Converged charging for traffic forwarding of 5G VN group communication p. 15

5.2.1 Use Case p. 15

5.2.1.1 Use Case #2.1: Traffic Forwarding of 5G VN Group Communication p. 15

5.2.2 Potential charging requirements p. 16

5.2.3 Key issues p. 16

5.2.3.1 Key issue #2.1: Chargeable events and charging information required p. 16

5.2.4 Solutions p. 16

5.2.4.1 Solution #2.1: Add the SMF based solution for traffic forwarding p. 16

5.2.4.1.1 General description p. 16

5.2.4.1.2 Solution #2.1.1: SMF Charging Trigger Function (CTF) based solution p. 17

5.2.4.1.2.1 Architecture description p. 17

5.2.4.1.2.2 Procedures description p. 17

5.2.4.1.2.2.1 Charging procedures for traffic forwarding p. 17

5.2.5 Evaluation p. 19

5.2.5.1 Solutions evaluation for Key issue #2.1 p. 19

5.2.6 Conclusion p. 19

5.3 Topic 3: Converged charging for 5G VN Group Communication p. 19

5.3.1 Use Case p. 19

5.3.1.1 Use Case #3.1: 5G VN group communication p. 19

5.3.2 Potential charging requirements p. 19

5.3.3 Key issues p. 20

5.3.3.1 Key issue #3.1: Chargeable events and charging information required p. 20

5.3.4 Solutions p. 20

5.3.4.1 Solution #3.1: 5G VN group unicast communication per PDU session p. 20

5.3.4.1.1 General description p. 20

5.3.4.1.2 Architecture description p. 20

5.3.4.1.3 Procedures description p. 21

5.3.4.2 Solution #3.2: 5G VN group unicast communication per N19 p. 21

5.3.4.2.1 General description p. 21

5.3.4.2.2 Architecture description p. 21

5.3.4.2.3 Procedures description p. 21

5.3.4.3 Solution #3.3: 5G VN group multicast and broadcast communication p. 22

5.3.4.3.1 General description p. 22

5.3.4.3.2 Architecture description p. 22

5.3.4.3.3 Procedures description p. 22

5.3.5 Evaluation p. 22

5.3.5.1 Solutions evaluation for Key issue #3.1 p. 22

5.3.6 Conclusion p. 22

5.4 Topic 4: Charging the usage of 5G VN group communication p. 23

5.4.1 Use Case p. 23

5.4.1.1 Use Case #4.1: Total volume and duration of 5G VN group communication p. 23

5.4.2 Potential charging requirements p. 23

5.4.3 Key issues p. 23

5.4.4 Solutions p. 23

5.4.4.1 Solution #4.1: SMF reports the aggregated usage for 5G VN group 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 Procedures description p. 24

5.4.4.2 Solution #4.2: CHF aggregates the usage of 5G VN Group per PDU session p. 24

5.4.4.2.1 General description p. 24

5.4.4.2.2 Architecture description p. 24

5.4.4.2.3 Procedures description p. 25

5.4.5 Evaluation p. 25

5.4.5.1 Solutions evaluation for Key issue #4.1 p. 25

5.4.6 Conclusion p. 25

6 Conclusions and Recommendations p. 25

$ Change history p. 27