METHOD FOR SUPPORTING A USER EQUIPMENT LACKING GLOBALLY ROUTABLE USER AGENT URI - GRUU SUPPORT IN AN INTERNET PROTOCOL MULTIMEDIA SUBSYSTEM - IMS
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United States of America Patent
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Issued Date -
Jul 5, 2012
app pub date -
Sep 16, 2010
filing date -
Sep 18, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A Core Network is provided for supporting an Internet Protocol Multimedia Subsystem (IMS) enabled User Equipment (UE), the UE lacking Globally Routable User Agent URI (GRUU) support in an IMS of a communication network. The Core Network includes: an interworking entity, configured to receive a first Session Initiation Protocol (SIP) message from the UE, wherein the first message lacks GRUU-related data, to modify the first SIP message by adding GRUU-related data, to receive a second SIP message to be sent to the UE, wherein the second message includes GRUU-related data, and to modify the second message by removing GRUU-related data. The interworking entity is one of: a Proxy-Call State Control Function (P-CSCF) entity; a Serving-Call State Control Function (S-CSCF) entity; and a Session Border Controller (SBC).
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