Universal Mobile Telecommunications System (UMTS); LTE; Policy and charging control over Rx reference point (V10.4.0; 3GPP TS 29.214 version 10.4.0 Release 10)
The present document provides the stage 3 specification of the Rx reference point for the present release. The functional requirements and the stage 2 specifications of the Rx reference point are contained in 3GPP TS 23.203 [7]. The Rx reference point lies between the Application Function and the Policy and Charging Rule Function. Whenever it is possible the present document specifies the requirements for the protocol by reference to specifications produced by the IETF within the scope of Diameter. Where this is not possible@ extensions to Diameter are defined within the present document.