The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 01, 2014
Filed:
May. 19, 2009
Heiko Perkuhn, Aachen, DE;
Marc Vorwerk, Aachen, DE;
Rene Rembarz, Aachen, DE;
Rosa Maria Martinez Perallon, Aachen, DE;
Heiko Perkuhn, Aachen, DE;
Marc Vorwerk, Aachen, DE;
Rene Rembarz, Aachen, DE;
Rosa Maria Martinez Perallon, Aachen, DE;
Telefonaktiebolaget L M Ericsson (Publ), Stockholm, SE;
Abstract
Techniques for managing a registration of a roaming user terminal () in its IMS home network () based on a roaming agreement between the visited IMS network () and the home IMS network () are described. According to one embodiment of the invention, a method for managing user registrations in the first IMS network () is provided. The method may be performed in an I-CSCF () of the first IMS network and comprises the steps of determining a status change in an automatically established roaming agreement with the second IMS network; and sending, based on the determination result, roaming status update information () to an HSS () associated with the first IMS network for initiating a registration update of the user.