US Patent 8191116 User equipment validation in an IP network

Patent 8191116 was granted and assigned to AT&T Mobility on May, 2012 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

AT&T Mobility

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

81911160

Patent Inventor Names

Daryl Gazzard0

Date of Patent

May 29, 2012

Patent Application Number

112520770

Date Filed

October 17, 2005

Patent Primary Examiner

‌

Matthew Henning

Patent abstract

An authentication and validation architecture utilizing a P-CSCF (proxy-call session control function) service to validate a source IP address against a registered contact IP address upon receiving an initial request for a dialog or a standalone request (except REGISTER) from a registered user. This provides a security measure to prevent IMS (IP multiemdia subsytem) identity spoofing, when SIP security (IPsec) access security is not enabled, or not used, between the user equipment (UE) and P-CSCF service.