| 摘要 |
A Policy and Charging Rules Function, a PCRF (120), for use with a Policy and Charging Enforcement Function, a PCEF (135), over a Gx interface, and arranged to communicate with an Application Function, an AF (110), over an Rx interface. The PCRF (120) is arranged to receive a request from the AF (110) regarding Access Network Charging Correlation Information for the AF, and if such a request is received from the AF, the PCRF (120) checks if the Access Network Charging Correlation Information is known to the PCRF, in which case the PCRF (120) provides the information to the AF (110), and if the Access Network Charging Correlation Information is not known to the PCRF (120), it subscribes to the Access Network Charging Correlation Information from the PCEF (135) and to supply the Access Network Charging Correlation Information to the AF (110) after reception from the PCEF (135). |
