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. 31, 2023
Filed:
Jan. 14, 2019
Applicant:
British Telecommunications Public Limited Company, London, GB;
Inventor:
Maria Cuevas Ramirez, London, GB;
Assignee:
BRITISH TELECOMMUNICATIONS public limited company, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 36/14 (2009.01); H04L 65/1016 (2022.01); H04L 65/1073 (2022.01); H04W 36/38 (2009.01); H04L 65/1104 (2022.01); H04L 65/102 (2022.01); H04W 88/06 (2009.01); H04W 88/16 (2009.01);
U.S. Cl.
CPC ...
H04W 36/14 (2013.01); H04L 65/1016 (2013.01); H04L 65/1073 (2013.01); H04L 65/1104 (2022.05); H04W 36/385 (2013.01); H04L 65/102 (2013.01); H04W 88/06 (2013.01); H04W 88/16 (2013.01);
Abstract
In a LTE network user devices can access voice application service via Voice over LTE (VoLTE) and Voice over WiFi (VoWiFi). To detect faults in the data link associated with an evolved packet data gateway for providing access by the user device to the LTE network from a non-trusted network which will affect VoWiFi capability, a packet data gateway monitors the status of ePDG and if a fault is detected, the user device is notified that it should connect to voice services via VoLTE.