Patent ID: 9100134
Filing Date: 2015-08-04
Classification: H04J,H04L,H04W

Abstract:
1. A method for synchronization of shared initial filter criteria in an IP Multimedia Subsystem (IMS) network, the method comprising: transmitting, by a first computing device in the IMS network, a server assignment request to a second computing device in the IMS network; receiving, at the first computing device, a response to the server assignment request from the second computing device, the response including an identifier stored at the first computing device and associated with a shared initial filter criteria set; determining, by the first computing device, whether the shared initial filter criteria set corresponding to the identifier is stored at the first computing device; transmitting, by the first computing device, a retrieval request including the identifier to the second computing device if the shared initial filter criteria set corresponding to the identifier is not currently available or not stored at the first computing device; receiving, at the first computing device, the shared initial filter criteria set corresponding to the identifier from the second computing device in response to the retrieval request; storing, at the first computing device, the shared initial filter criteria set; wherein the first computing device is a Serving-Call Session Control Function node and the second computing device is a Home Subscriber Server and said first and said second computing devices communicate using a Sh IMS interface; wherein said Serving-Call Session Control Function node and said Home Subscriber Server also communicate using a Cx IMS interface; and wherein said Home Subscriber Server is provisioned to include a dummy user profile having a public user identifier and repository data, said dummy public user identifier being the same as said identifier associated with said shared initial filter criteria set, and said repository data including said shared initial filter criteria set.