scope:

The present document defines the Stage 2 policy and charging control framework for the 5G System specified in TS 23.501 [2] and TS 23.502 [3].

The policy and charging control framework encompasses the following high level functions:

- Flow Based Charging for network usage, including charging control and online credit control, for service data flows;

- Policy control for session management and service data flows (e.g. gating control, QoS control, etc.);

- Management for access and mobility related policies;

- Management for UE access selection and PDU Session selection related policies.

It refers to the policy and charging control functionality specified in TS 23.203 [4] for policy and charging control for PDU Sessions, depicting the differences where those exist.

Interworking with E-UTRAN connected to EPC is described in TS 23.501 [2].

TS 23.502 [3] contains the stage 2 procedures and flows for the policy and charging control framework and it is a companion specification to this specification.