Procedure for selecting a function of policies and billing rules

摘要

Procedure for selecting a function of policies and billing rules, comprising: when a user equipment (UE) accesses a system Project 3rd Generation Partnership (3GPP) through an access network evolved universal terrestrial radio ( E-UTRAN) of a visited network or network access Internet Protocol (IP) non-3GPP safe or an IP network access unsecured 3GPP, after receiving a request message session establishment sent by a client control policies and positions (PCC) in the visited network, an agent routing "Diameter" (DRA) of the visited network sends the request message session establishment to a selected function policies and billing rules ( PCRF) of the visited network according to the records stored locally, or instructs the client PCC to convey the message session establishment request to the PCRF of the visited network; characterized in that the PCRF of the visited network sends the request message session establishment to a DRA of a home network, then the DRA home network sends the request message session establishment to PCRF selected home network according to the records stored locally or instructs the PCRF of the visited network to transmit the request message to the PCRF session selected home network.