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:
Nov. 07, 2023
Filed:
May. 18, 2022
Applicant:
Blackberry Limited, Waterloo, CA;
Inventor:
Jan Hendrik Lucas Bakker, Fort Worth, TX (US);
Assignee:
BlackBerry Limited, Ontario, CA;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04W 36/14 (2009.01); H04W 60/00 (2009.01); H04W 4/90 (2018.01); H04W 36/00 (2009.01); H04W 76/50 (2018.01); H04W 60/04 (2009.01); H04W 76/18 (2018.01);
U.S. Cl.
CPC ...
H04W 36/14 (2013.01); H04W 4/90 (2018.02); H04W 36/0022 (2013.01); H04W 60/00 (2013.01); H04W 60/005 (2013.01); H04W 60/04 (2013.01); H04W 76/18 (2018.02); H04W 76/50 (2018.02);
Abstract
A system and method in a user equipment (UE) for transferring an emergency session from a first network to a second network. The method includes transmitting a first registration request message to the second network; receiving a registration reject message from the second network; detecting the emergency session between the UE and the first network is ongoing; transmitting a second registration request message comprising an emergency registration request to the second network; and receiving a registration accept message for the emergency session.