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.
Patent No.:
Date of Patent:
Jan. 02, 2023
Filed:
Apr. 03, 2017
Applicant:
Samsung Electronics Co., Ltd., Gyeonggi-do, KR;
Inventors:
Han-Na Lim, Gyeonggi-do, KR;
Tae-Sun Yeoum, Seoul, KR;
Eun-Hui Bae, Seoul, KR;
O-Sok Song, Suwon-si, KR;
Sung-Ho Choi, Gyeonggi-do, KR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 15/16 (2005.12); H04L 29/06 (2005.12); H04L 65/1095 (2021.12); H04L 65/1073 (2021.12); H04L 65/1016 (2021.12); H04L 65/1104 (2021.12); H04W 60/06 (2008.12); H04L 69/40 (2021.12);
U.S. Cl.
CPC ...
H04L 65/1095 (2022.04); H04L 65/1016 (2012.12); H04L 65/1073 (2012.12); H04L 65/1104 (2022.04); H04L 69/40 (2012.12); H04W 60/06 (2012.12);
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.