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. 22, 2021
Filed:
Dec. 12, 2018
Applicant:
Apple Inc., Cupertino, CA (US);
Inventors:
Sanjeevi Balasubramanian, San Jose, CA (US);
Shiva Krishna Narra, San Jose, CA (US);
Tarik Tabet, San Jose, CA (US);
Dhruv Khati, San Jose, CA (US);
Lydi Smaini, San Jose, CA (US);
Anjaneyulu Maganti, Cupertino, CA (US);
Mohit Narang, Cupertino, CA (US);
Tiberiu Muresan, San Jose, CA (US);
Assignee:
Apple Inc., Cupertino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 4/90 (2018.01); H04W 4/12 (2009.01); H04L 5/00 (2006.01); H04W 56/00 (2009.01); H04W 52/02 (2009.01); H04W 4/70 (2018.01); H04W 72/04 (2009.01); H04L 1/00 (2006.01);
U.S. Cl.
CPC ...
H04W 4/90 (2018.02); H04L 1/0003 (2013.01); H04L 5/0055 (2013.01); H04W 4/12 (2013.01); H04W 4/70 (2018.02); H04W 52/0261 (2013.01); H04W 56/001 (2013.01); H04W 72/0446 (2013.01);
Abstract
In a method of device-to-device communication, a user device initially sends an emergency message repeatedly at a first repeating frequency. When a specified number acknowledgement (ACK) messages are received, the user device sends the emergency message repeatedly at a reduced repeating frequency. The repeating frequency may be further reduced when more ACK messages are received.