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:
Sep. 20, 2005
Filed:
Dec. 29, 2000
Rodney E. Massie, Lindenhurst, IL (US);
Patrick J. Leboulanger, St. Charles, IL (US);
Chantel M. Speaks, Beach Park, IL (US);
Julian M. Franklin, Lindenhurst, IL (US);
Rodney E. Massie, Lindenhurst, IL (US);
Patrick J. Leboulanger, St. Charles, IL (US);
Chantel M. Speaks, Beach Park, IL (US);
Julian M. Franklin, Lindenhurst, IL (US);
Motient Communications Inc., Lincolnshire, IL (US);
Abstract
A system and method for enabling a first device () that may optionally roam between at least first and second wireless networks () to communicate with a second device () that may optionally roam between the at least first and second wireless networks (). The devices () are preferably registered to each network in which the device may roam. A routing switch () first transmits a data message to the receiving device at the last known location of the receiving device. If a negative acknowledgement is received, the message is routed to all other networks to which the receiving device is registered, either serially or in parallel, depending upon the configuration of the transmitting network. Routing devices () and/or gateways () are preferably provided for each network () to provide any required protocol and/or message format conversions.