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. 11, 2013
Filed:
Mar. 07, 2011
David G. Wiatrowski, Woodstock, IL (US);
John P. Belmonte, Schaumburg, IL (US);
Dipendra M. Chowdhary, Hoffman Estates, IL (US);
Yueh Ching Chung, Pul, MY;
David G. Wiatrowski, Woodstock, IL (US);
John P. Belmonte, Schaumburg, IL (US);
Dipendra M. Chowdhary, Hoffman Estates, IL (US);
Yueh Ching Chung, Pul, MY;
Motorola Solutions, Inc., Schaumburg, IL (US);
Abstract
A method for diffusing channel timing among a plurality of subscriber units operating in TDMA Direct Mode, wherein the method includes: receiving, from a second one of the subscriber units operating in the TDMA Direct Mode, a first message; determining first channel timing from the received message; determining whether the received first channel timing is correct, wherein the determining is based at least on comparing a generation of the first subscriber unit with a generation of the second subscriber unit; when the received first channel timing is correct, starting a random delay; upon expiration of the random delay, transmitting a first forced propagation message to propagate the first channel timing to at least a third one of the subscriber units operating in the TDMA Direct Mode and having a higher generation than the generations of the first and the second subscriber units.