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:
Nov. 28, 1995
Filed:
Feb. 15, 1994
Kevin Gardeck, Algonquin, IL (US);
David A Green, Bartlett, IL (US);
Kevin Cutts, Schaumburg, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A method of providing over the air rekeying information to roaming communication units in a secure wide area communications system including a home key unit 101, a first key unit 102, and second key unit 103 operably linked together. A communication unit 104 affiliated to the home key unit 101 roams to the locality of the first key unit 102. The roaming communication unit then transmits a key request 112 to the first key unit 102 that transmits a unit information request 108 to the home key unit 101. The home key unit 101 responds by transmitting a rekey information packet 109, that includes a unit key 110, to the first key unit 102. The first key unit 102 then transmits a key information packet 113, that includes the unit key 110, to the roaming communication unit. The roaming communication unit then uses the unit key 110 to communicate securely at the locality of the first key unit.