Patent ID: 8943209
Filing Date: 2015-01-27
Classification: G06Q,H04M

Abstract:
1. A method for policy and charging rules function (PCRF) fault tolerance, the method comprising: sending, from the PCRF to a Diameter peer, a message concerning Diameter application session state information associated with Diameter application sessions currently or previously managed by the PCRF; receiving, by the PCRF, a response from the Diameter peer in response to the message concerning the Diameter application session state information, wherein the response indicates a number of active Gx sessions associated with the Diameter peer; determining, by the PCRF and based on the response, whether the Diameter application session state information maintained by the PCRF is accurate with regard to Diameter application session state information maintained by the Diameter peer; and in response to determining that the Diameter application session state information maintained by the PCRF is not accurate, requesting, by the PCRF, accurate Diameter application session state information from the Diameter peer.