Is a
Patent attributes
Current Assignee
0
Patent Jurisdiction
Patent Number
Patent Inventor Names
Sung-Ho Choi0
Tae-Sun Yeoum0
Eun-Hui Bae0
Han-Na Lim0
O-Sok Song0
Date of Patent
September 13, 2011
0Patent Application Number
119729170
Date Filed
January 11, 2008
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A method and system in which upon occurrence of a P-CSCF failure, a network sends an IMS reregistration request message to a UE. An S-CSCF or an AS monitors a P-CSCF to detect occurrence of a failure in the P-CSCF. Upon detecting the occurrence of a P-CSCF failure, the S-CSCF or the AS sends a request message for IMS reregistration to the UEs being served by the failed P-CSCF. In this manner, the UE can continuously receive the service even though a failure occurs in the P-CSCF.
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