| 摘要 |
The present invention discloses a method and a system for deleting redundant information of a home Policy and Charging Rule Function (PCRF). The Bearer Binding and Event Report Function (BBERF) in a visited network indicates gateway control session termination to the home PCRF through a visited PCRF after receiving a termination session triggering for determining to terminate a gateway control session between the BBERF in the visited network and the visited PCRF, and the home PCRF deletes policy control information related to the BBERF in the visited network. With the method of the present invention, when the UE is in a roaming scenario of the home routed or local breakout, in the process of the occurrence of the BBERF relocation, or after performing UE inter-system pre-registration or in a multiple access situation, and when the gateway control session in the visited network terminates, the invalid session information in the home PCRF is cleared in time, which eliminates the redundancy of the home network resources and saves the home network resources. |
