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.

Date of Patent:
Oct. 24, 2017

Filed:

Aug. 25, 2014
Applicant:

Apple Inc., Cupertino, CA (US);

Inventors:

David Price, Reading, GB;

Alan Darbyshire, Oxford, GB;

Ricky Kaura, Uxbridge, GB;

Assignee:

Apple Inc., Cupertino, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 15/16 (2006.01); H04W 8/18 (2009.01); H04L 29/12 (2006.01); H04L 29/06 (2006.01);
U.S. Cl.
CPC ...
H04W 8/183 (2013.01); H04L 29/1282 (2013.01); H04L 29/12132 (2013.01); H04L 29/12188 (2013.01); H04L 61/1552 (2013.01); H04L 61/1588 (2013.01); H04L 61/6013 (2013.01); H04L 65/1016 (2013.01); H04L 65/1073 (2013.01);
Abstract

In an Internet Protocol Multimedia Subsystem (IMS) network in which multiple subscriber data servers are deployed with partitioned subscription data for users, a subscriber location function (SLF) is used to proxy queries to a subscriber data server (such as an HSS) in which subscription data for a user can be found. The SLF receives a query for the subscriber data server, looks up the address of appropriate subscriber data server and proxies the query to the appropriate subscriber data server. Preferably, the SLF is co-located with a subscriber data server.


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