POLICY AND CHARGING CONTROL METHOD AND SYSTEM FOR MULTI-PDN CONNECTIONS OF SINGLE APN

摘要

The present invention provides a method and a system for performing policy and charging control for establishing multiple PDN connections to a single APN, the method associates the gateway control session with the subsession in the S9 session associated with the Gx session modified by the indication of IP-CAN session modification message through the PDN Connection ID, thereby, after the relocation occurrs on the BBERF making the modified PCC rule be sent down to the PCEF through the associated Gx session and the modified QoS be sent down to the destination BBERF through the gateway control session, thereby implementing the policy and charging control when establishing multiple PDN connections to the single APN in the roaming scenario.