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:
May. 01, 2018

Filed:

Jul. 28, 2014
Applicant:

Motorola Solutions, Inc, Chicago, IL (US);

Inventors:

Dong Zhao, Chengdu, CN;

Yi Tang, Chengdu, CN;

Fan Yang, Chengdu, CN;

Assignee:

MOTOROLA SOLUTIONS, INC., Chicago, IL (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 1/725 (2006.01); H04W 4/90 (2018.01); H04W 8/14 (2009.01); H04W 4/02 (2018.01); H04L 12/26 (2006.01); H04W 4/22 (2009.01); H04W 84/18 (2009.01);
U.S. Cl.
CPC ...
H04M 1/72516 (2013.01); H04L 43/10 (2013.01); H04W 4/025 (2013.01); H04W 4/22 (2013.01); H04W 4/90 (2018.02); H04W 8/14 (2013.01); H04W 84/18 (2013.01);
Abstract

At least one embodiment takes the form of a process carried out by a given mobile radio in a group of mobile radios. The process includes broadcasting heartbeat messages in accordance with a group-wide symmetric-timing protocol and maintaining an in-range list of mobile radios. The in-range list is maintained at least in part by (i) adding mobile radios that are not already on the in-range list to the in-range list upon detecting transmissions from such mobile radios; (ii) maintaining, for each mobile radio on the in-range list, a respective keepalive timer in accordance with the group-wide symmetric-timing protocol; and (iii) removing mobile radios from the in-range list upon expiration of the respective keepalive timers. The process further includes presenting an alert via a user interface when a count of mobile radios on the in-range list falls below a notification threshold.


Find Patent Forward Citations

Zhao, Dong. (2018). Methods and systems for presenting an alert when leaving a direct-mode coverage area (U.S. Patent No. 9961179). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9961179

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…