The present document specifies detailed call flows of Policy and Charging Control (PCC) over the Npcf, Nsmf, Namf, Nudr, Nnef, Nchf, Nbsf, Nnwdaf and Nmbsmf service-based interfaces and their relationship with the flow level signalling in 5G system. The stage 2 definition and procedures of PCC are contained in TS 23.502 and TS 23.503. The 5G System Architecture is defined in TS 23.501. The stage 2 definition and procedures for PCC specific for wireless and wireline convergence are contained in TS 23.316. The stage 2 definition and procedures of PCC for 5G multicast/broadcast services are contained in TS 23.247. Detailed stage 3 procedures are provided in TS 29.507, TS 29.508, TS 29.512, TS 29.514, TS 29.520, TS 29.519, TS 29.521, TS 29.594, TS 29.522, TS 29.551, TS 29.525, TS 29.554 and TS 29.537. The Technical Realization of the Service Based Architecture and the Principles and Guidelines for Services Definition of the 5G System are specified in TS 29.500 and TS 29.501. The present specification also describes the PCC reference architectures for non-roaming and roaming scenarios in 5G system. The present specification also describes the mapping of QoS parameters at AF, PCF,| SMF and MB-SMF. The present specification also describes the session binding at PCF, and the QoS flow binding at SMF and MB-SMF. The present specification also describes the PCF addressing. The present specification also describes the Race condition handling.

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.

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