| 主权项 |
1. A method for a network communication system 1 comprising a user equipment (UE; 2), a gateway (GGSN; PDN GW; 3) comprising a Policy and Charging Enforcement Function (PCEF; 4), an application function (AF; 5), a Policy and Charging Control Function (PCRF; 6) and a Network Address Translator (NAT; 7); where the Policy and Charging Control Function (PCRF; 6) communicates with the Policy and Charging Enforcement Function (PCEF; 4) and the application function (AF; 5); wherein the user equipment (UE; 2) connects to a network, wherein a Gx session is started between the Policy and Charging Enforcement Function (PCEF; 4) and the Policy and Charging Control Function (PCRF; 6); wherein the user equipment (UE; 2) starts a service session (SS) with the application function (AF; 5) such that service signaling passes via the application function (AF; 5), wherein an Rx session is created between the Policy and Charging Control Function (PCRF; 6) and the application function (AF; 5), and wherein a Network and Port Address Translator (NAPT; 7) is positioned between the user equipment (UE; 2) and the application function (AF; 5) for handling the service session (SS), characterized in that the Policy and Charging Control Function (PCRF; 6) is aware of any Network Address Translator (NAT; 7) bindings of the user equipment (UE; 2). |
