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:
May. 19, 2020
Filed:
Nov. 12, 2014
Applicant:
Blackberry Limited, Waterloo, CA;
Inventors:
John David Netto, Nepean, CA;
Shu-Lin Chen, Kanata, CA;
Assignee:
BlackBerry Limited, Waterloo, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 12/04 (2009.01); H04L 9/08 (2006.01); H04L 29/06 (2006.01); H04W 72/00 (2009.01); H04W 28/26 (2009.01); H04W 4/08 (2009.01); H04W 12/00 (2009.01);
U.S. Cl.
CPC ...
H04W 12/04 (2013.01); H04L 9/0822 (2013.01); H04L 9/0833 (2013.01); H04L 63/0428 (2013.01); H04L 63/0435 (2013.01); H04L 63/062 (2013.01); H04L 63/065 (2013.01); H04W 4/08 (2013.01); H04W 12/0013 (2019.01); H04W 12/04033 (2019.01); H04W 28/26 (2013.01); H04W 72/005 (2013.01); H04L 2209/601 (2013.01); H04L 2209/80 (2013.01); H04W 12/0052 (2019.01);
Abstract
A secure cell broadcast method entails defining a group of mobile devices, reserving a channel for the group, associating cryptographic key material with the group, notifying the mobile devices of the channel for the group, securely providing the key material to the mobile devices of the group, and broadcasting on the channel a secure broadcast message that is encrypted such that the mobile devices of the group receiving on the channel can receive and decrypt the secure broadcast message using the key material.