Patent Number: 9,432,842

Title: Recovery techniques in mobile networks

Abstract: A technique for protecting location information of a subscriber in a mobile network is disclosed. A User Mobility Server (UMS) receives a first query from a first call state control function (CSCF). The UMS transmits a call setup and a subscriber identity to a servicing-call state control function (S-CSCF). The S-CSCF may have no record of the subscriber identity due to a restart are some other event. The UMS receives a second query from the S-CSCF based in part of the subscriber identity. The UMS transmits a home address of a mobile station to the S-CSCF. The UMS may also transmit a profile download to the S-CSCF.

Inventors: Phan-Anh; Son (Budapest, HU), Benko; Balint (Budapest, HU), Hartikainen; Auvo (Budapest, HU), Verkama; Markku (Espoo, FI), Einola; Heikki Juhani (Espoo, FI), Faccin; Stefano (Hayward, CA)

Assignee: Intellectual Ventures I LLC

International Classification: H04W 24/00 (20090101); H04W 8/26 (20090101); H04W 24/02 (20090101); H04W 24/04 (20090101)

Expiration Date: 2020-08-30 0:00:00