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:
Sep. 13, 2016
Filed:
Aug. 24, 2015
Applicant:
Blackberry Limited, Waterloo, CA;
Inventors:
Assignee:
BlackBerry Limited, Waterloo, Ontario, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 72/02 (2009.01); H04W 4/00 (2009.01); H04W 56/00 (2009.01); H04W 74/08 (2009.01); H04W 76/02 (2009.01); H04B 7/26 (2006.01); H04W 8/00 (2009.01);
U.S. Cl.
CPC ...
H04W 72/02 (2013.01); H04B 7/2656 (2013.01); H04W 4/005 (2013.01); H04W 8/005 (2013.01); H04W 56/00 (2013.01); H04W 74/085 (2013.01); H04W 76/023 (2013.01);
Abstract
A method at a first device for enabling a device-to-device wireless link, the method detecting whether a presence signal of a second device is received over a first time period, the presence signal of the second device having a time-slot boundary; and if the presence signal of the second device is not detected, initiating a time-slot boundary by the first device including: transmitting a first presence signal of the first device in a selected time-slot; and checking for an acknowledgment to the first presence signal.