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:
Mar. 24, 1998
Filed:
Dec. 04, 1995
Peter Joseph Armbruster, Tempe, AZ (US);
James Powers Redden, Mesa, AZ (US);
Steven Paul Sawyer, Fountain Hills, AZ (US);
Motorola, Schaumburg, IL (US);
Abstract
A subscriber unit (26) contains location data that expires after predetermined time periods that are based on the subscriber's mobility. When the location data has not expired, the subscriber unit requests access (108) to a satellite communication system (10) by providing location data within an access request message. The communication system performs a quick check (214) to validate the location data. Accordingly, time-consuming geo-location procedures are avoided when a call is initiated or being received. When the location data has expired, the subscriber unit requests access (110) without providing location data within the access request message. The communication system performs a complete geolocation procedure (210) to determine valid location data for the subscriber unit. The location data is sent (211) to the subscriber unit and time stamped (113).