Section: 6.3.7 PCF discovery and selection 6.3.7.0 General principles
Content: Clause 6.3.7.0 describes the underlying principles for PCF selection and discovery: - There may be multiple and separately addressable PCFs in a PLMN. - The PCF must be able to correlate the AF service session established over N5 or Rx with the associated PDU Session (Session binding) handled over N7. - It shall be possible to deploy a network so that the PCF may serve only specific DN(s). For example, Policy Control may be enabled on a per DNN basis. - Unique identification of a PDU Session in the PCF shall be possible based on the (UE ID, DNN)-tuple, the (UE (IP or MAC) Address(es), DNN)-tuple and the (UE ID, UE (IP or MAC) Address(es), DNN).