Patent ID: 8737953
Filing Date: 2014-05-27
Classification: H04L,H04M,H04W

Abstract:
1. A method of processing Accounting Request (ACR) messages in an IP Multimedia Subsystem (IMS) network, the method comprising: for an ACR [Interim] or ACR[Stop] message for a session received by a charging collection function node, if a corresponding ACR [Start] message is not stored at the charging collection function node, the ACR [Interim] or ACR[Stop] message is stored in an incomplete database associated with the charging collection function node; if the charging collection function node that hosts the correlation functionality (the “correlation host”) for the ACRs is in-service, the charging collection function node processes the ACRs as follows: reviving an out of service charging collection function node; processing the revived charging collection function node's corresponding incomplete database as follows: