scope:

The present specification adds detailed flows of Policy and Charging Control (PCC) over the Diameter-based Rx, Gx, Gxx, Sd, Sy, S9, Nt, Diameter-based St and Np reference points and their relationship with the bearer level signalling flows over the Gn/Gp, S4, S5/S8, S2a and S2c interfaces.

The calls flows depicted in this Technical Specification represent usual cases, i.e. not all situations are covered. Detailed information provided in 3GPP TS 29.212 [9], 3GPP TS 29.214 [10], 3GPP TS 29.215 [22], 3GPP TS 29.217 [36] , 3GPP TS 29.154 [56] and 3GPP TS 29.219 [28] shall be taken into consideration.

The present specification also describes the binding and the mapping of QoS parameters among SDP, UMTS QoS parameters, and QoS authorization parameters.

The present specification also describes the PCRF addressing using DRA.

The present specification also describes Diameter race condition handling for Gx based applications, i.e Gx, Gxx, Sd and S9.