SYNCHRONIZATION OF SHARED IDENTIFIERS ACROSS SERVERS IN AN IMS NETWORK

摘要

Methods and apparatuses, including computer program products, are described for synchronization of shared initial filter criteria in an IP Multimedia Subsystem (IMS) network. A first computing device in the IMS network transmits a registration request to a second computing device in the IMS network. The first computing device receives a response to the registration request from the second computing device, including an identifier associated with a shared initial filter criteria set stored at the first computing device. The first computing device determines whether the shared initial filter criteria set corresponding to the identifier is stored at the first computing device and transmits a retrieval request to the second computing device if the shared initial filter criteria set corresponding to the identifier is not stored. The first computing device receives the shared initial filter criteria set from the second computing device, and stores the shared initial filter criteria set.

主权项

1. A method for synchronization of shared initial filter criteria in an IP Multimedia Subsystem (IMS) network, the method comprising:
receiving by a Serving-Call Session Control Function node in the IMS network a registration request from an Interrogating-Call Session Control Function node; transmitting, by the Serving-Call Session Control Function node in the IMS network, a server assignment request to a Home Subscriber Server in the IMS network in response to receiving said registration request; receiving, at the Serving-Call Session Control Function node, a response to the server assignment request from the Home Subscriber Server, the response including an identifier stored at the Serving-Call Session Control Function node and associated with a shared initial filter criteria set; determining, by the Serving-Call Session Control Function node, whether the shared initial filter criteria set corresponding to the identifier is stored at the Serving-Call Session Control Function Node; transmitting, by the Serving-Call Session Control Function node, a retrieval request including the identifier to the Home Subscriber Server if the shared initial filter criteria set corresponding to the identifier is not stored at the first computing device; receiving, at the Serving-Call Session Control Function node, the shared initial filter criteria set corresponding to the identifier from the Home Subscriber Server in response to the retrieval request; and storing, at the Serving-Call Session Control Function node, the shared initial filter criteria set.