Patent ID: 8811342

Claim:
A method for deleting redundant information of a home policy and charging rule function, comprising: a Bearer Binding and Event Report Function (BBERF) in a visited network indicating gateway control session termination to the home Policy and Charging Rule Function (PCRF) through a visited PCRF; and said home PCRF deleting policy control information which is related to said BBERF in the visited network and stored in said home PCRF, wherein the step of the BBERF in the visited network indicating gateway control session termination to the home PCRF through the visited PCRF comprises: said visited PCRF, after receiving a gateway control session termination request message sent by the BBERF in the visited network, sending an S9 session modification indication message to the home PCRF to make a request for modifying an S9 subsession corresponding to a gateway control session between the BBERF in the visited network and said visited PCRF and indicate that said gateway control session terminates, and wherein said S9 session modification indication message includes an address of said BBERF in the visited network; and the address of the BBERF in the visited network is located in an S9 session level, or a subsession level of an S9 session.