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.

Date of Patent:
Mar. 10, 2020

Filed:

Dec. 12, 2018
Applicant:

Apple Inc., Cupertino, CA (US);

Inventors:

Sanjeevi Balasubramanian, San Jose, CA (US);

Shiva Krishna Narra, San Jose, CA (US);

Anjaneyulu Maganti, Cupertino, CA (US);

Tarik Tabet, San Jose, CA (US);

Lydi Smaini, San Jose, CA (US);

Dhruv Khati, 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 52/02 (2009.01); H04M 1/73 (2006.01);
U.S. Cl.
CPC ...
H04W 52/027 (2013.01); H04M 1/73 (2013.01); H04W 52/0219 (2013.01); H04W 52/0225 (2013.01); H04W 52/0287 (2013.01);
Abstract

In a method of device-to-device communication, efficient power management is provided when a primary device has a low battery level. The primary device can send synchronization signals and discovery messages to secondary devices by looping through a sequence of transmit power values in a sequence of consecutive frames, where the sequence of transmitting values includes a default power value and a reduced power value.


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