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. 23, 2003
Filed:
Oct. 01, 1999
Keith A. Olds, Mesa, AZ (US);
Carl Myron Wagner, Higley, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
The methods ( , and ), and apparatus ( and ) of the present invention employ demand assigned spatial multiplexing in a satellite communication system ( ) to efficiently accommodate varying demand for high data rate service while minimizing satellite antenna and radio system complexity in a ubiquitous coverage satellite system optimized for transporting packet data. In a preferred embodiment, the methods ( and ) and apparatus ( and ) of the present invention use a first set of signaling beams ( ) to establish signaling uplinks and then direct traffic spot beams ( ) at particular UE devices to support traffic uplinks in accordance with demand assigned multiple access (DAMA) parameters when and only when the UE devices have traffic data to transmit to a satellite. In a preferred embodiment, UE device ( ) also executes a method ( ) that includes steps for determining appropriate steering angles for a servicing satellite ( ) to use to direct a traffic spot beam ( ) to the UE device's location when the UE has traffic data to transmit.