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:
Jun. 25, 2019
Filed:
Jan. 18, 2018
Applicant:
Blackberry Limited, Waterloo, CA;
Inventor:
Hamid Mahmood, Kanata, CA;
Assignee:
BlackBerry Limited, Waterloo, Ontario, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 3/02 (2006.01); H04M 3/42 (2006.01); H04W 28/02 (2009.01); H04W 48/18 (2009.01); H04L 12/707 (2013.01);
U.S. Cl.
CPC ...
H04W 28/0247 (2013.01); H04L 45/22 (2013.01); H04M 3/02 (2013.01); H04M 3/42246 (2013.01); H04W 48/18 (2013.01); H04M 2207/18 (2013.01);
Abstract
A user equipment (UE), which is able to use a plurality of different wireless access technologies, receives a request to establish a voice call. In response to the request, the UE determines whether voice over a first wireless access technology of the different wireless access technologies is supported, and responsive to determining that voice over the first wireless access technology is not supported, the UE attempts to establish the voice call over a second wireless access technology of the different wireless access technologies.