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. 20, 2004
Filed:
Jul. 02, 2001
Applicant:
Inventors:
Loren J. Rittle, Naperville, IL (US);
Timothy J. Spets, Algonquin, IL (US);
Guy G. Romano, Elmhurst, IL (US);
Kenneth T. Crisler, Lake Zurich, IL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 7/00 ; H04Q 7/00 ; H04L 1/240 ;
U.S. Cl.
CPC ...
H04B 7/00 ; H04Q 7/00 ; H04L 1/240 ;
Abstract
Frame collisions on communication channels connecting half-duplex units and a full-duplex unit are avoided using MAC and LLC layer protocols adapted to arbitrate channel usage. One or more flags can be included in MAC and LLC packet headers and/or acknowledgements to indicate whether subsequent packet transmissions will be attempted by sending units. Units receiving set flags can hold off transmission until receiving cleared flags from the sending units. In this manner, packet collisions can be avoided.