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IEEE/ICACT20220041 Slide.16        [Big Slide]	Oral Presentation
	The Charging Function (CHF), a crucial module of 5G core, encompasses support for both prepaid and postpaid billing within the same charging system. Our test focused on the performance of the CHF. The CHF has three layers: • Connectivity: stateless sets of components that interface with external entities via an API gateway. • Business logic: a stateless set of application layers that include business logic, policy engine and other necessary services. • Data management: the data access layer handling multiple backend storages (such as Database).

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