Patent · US Active

IMS restoration procedures for multiple contacts

US9026675B2 · kind B2 · utility

3Cited by

4References

9Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Emiliano Merino Vazquez · San Lorenzo de El Escorial, ES
Hubert Przybysz · Stuvsta-Snättringe, SE

Key dates

Filing date	Oct 31, 2008
Grant date	May 5, 2015
Priority date	—
Expiry date	Jul 2, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2101/395
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

In one aspect, the invention provides a method, and associated apparatus for re-registering a contact address of a user of an IP Multimedia Subsystem, IMS, network. A request for re-registration of the contact address is received at a Serving-Call Session Control Function, S-CSCF, node serving the user. After a determination that the S-CSCF has no stored information relating to the contact address, a request is sent to a Home Subscriber Server, HSS, of the user to register the contact address information. The HSS detects if the contact address information relating to the user has already been backed-up by the HSS, and notifies the node serving the user of registered contact address information backed-up by the HSS. Another aspect provides a method and associated apparatus for de-registering a registered contact address of a user of an IP Multimedia Subsystem, IMS, network.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.