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:
Jul. 24, 2012
Filed:
Nov. 30, 2009
Mark A. Boerger, Plantation, FL (US);
Duminda A. Dewasurendra, Plantation, FL (US);
Mahes M. Ekanayake, Davie, FL (US);
John K. Mckinney, Miramar, FL (US);
Mark A. Boerger, Plantation, FL (US);
Duminda A. Dewasurendra, Plantation, FL (US);
Mahes M. Ekanayake, Davie, FL (US);
John K. McKinney, Miramar, FL (US);
Motorola Solutions, Inc., Schaumburg, IL (US);
Abstract
A method for call setup in an asynchronous frequency hopping digital two-way communication system includes transmitting in adjacent time slots, by a caller device, a preamble slot over a first unique fixed frequency selected from a frequency hopset and a synchronization slot over a second unique fixed frequency selected from the frequency hopset. Further, the method includes one or more target devices transmitting an acknowledgement signal upon receiving the preamble slot over the first unique fixed frequency and the synchronization slot over the second unique fixed frequency, and followed by the caller device establishing the data communication link between the caller device and the one or more target devices over at least one random frequency selected from the frequency hopset, in response to receiving the acknowledgement signal from the one or more target devices.