Section: 9 Charging aspects 9.1 General
Content: The following set of requirements complement the requirements listed in 3GPP TS 22.115[ Service aspects; Charging and billing ]  [11]. The requirements apply for both home and roaming cases. The 5G core network shall support collection of all charging information on either a network or a slice basis. The 5G core network shall support collection of charging information for alternative authentication mechanisms. The 5G core network shall support collection of charging information associated with each serving MNO when multi-network connectivity is used under the control of the home operator. The 5G core network shall support charging for services/applications in an operator’s Service Hosting Environment. The 5G core network shall support charging for content delivered from a content caching application. The 5G core network shall support collection of charging information based on the access type (e.g. 3GPP, non-3GPP, satellite access). The 5G core network shall support collection of charging information based on the slice that the UE accesses. The 5G system shall be able to generate charging information regarding the used radio resources e.g. used frequency bands. The 5G core network shall support collection of charging information based on the capacity and performance metrics. The 5G system shall be able to support an indirect network connection even when the UE is in E-UTRAN or NG-RAN coverage. The 5G system shall be able to support mechanisms to differentiate charging information for traffic carried over satellite backhaul. For service function chaining (see clause 10) the collection of charging information associated to the use of service functions and the chain of service functions requested by third parties shall be supported. The 5G system shall be able to support collection of charging information for a group of UEs, e.g. UEs of a AI/ML FL group. The 5G system shall be able to support charging mechanism for multiple UE exchange data for the same service using the direct device connection.