Section: 6.2 5G LAN-type service charging 6.2.1 General
Content: The 5G LAN-type service charging specified in the clause 5.34.10 of TS 23.501[ System architecture for the 5G System (5GS) ] [215], including the 5G VN group management and 5G VN group communication. The 5G VN group configuration is either provided by OA&M or provided by an AF to the NEF. The 5G VN group management charging is applicable for the 5G VN group addition/deletion/modification (i.e.5G VN members), including the following two optional architecture specified in TS 32.254[ Telecommunication management; Charging management; Exposure function Northbound Application Program Interfaces (APIs) charging ]  [14]. which optional charging architecture to be used is depended on the operator’s decision. - CEF based charging: obtains the 5G VN group information from UDM by CEF, and reports to CHF. - NEF based charging: reports the 5G VN group charging information by NEF based on the API invocation from AF. NEF exposure function Northbound Application Program Interfaces (APIs) charging, using the NEF embedding the CTF. The 5G VN group communication includes one to one communication and one to many communications. The 5G VN group communication charging is applicable for traffic forwarding via PDU session of 5G VN group members which covered by 5G data connectivity domain converged charging architecture specified in TS 32.255[ Telecommunication management; Charging management; 5G data connectivity domain charging; Stage 2 ]  [15], using the SMF embedding the CTF.