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:
May. 03, 2005
Filed:
Aug. 30, 2002
George Geier, Scottsdale, AZ (US);
Christopher Bussan, Crystal Lake, IL (US);
Todd Conroy, Lincolnshire, IL (US);
Eric Hefner, Gumee, IL (US);
John Solar, Woodstock, IL (US);
George Geier, Scottsdale, AZ (US);
Christopher Bussan, Crystal Lake, IL (US);
Todd Conroy, Lincolnshire, IL (US);
Eric Hefner, Gumee, IL (US);
John Solar, Woodstock, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
The present invention provides a method and apparatus for generating time of arrival estimates for use by a wireless communication network for locating the position of a wireless or mobile source () within the service area of the wireless communication network. The mobile source generates time of arrival estimates from data bursts received from base sites () operating within the network. In at least one embodiment, the mobile source (), then, communicates the time of arrival estimates for each of the base sites () to the network, from which the location of the mobile source () is determined. In at least some instances, the mobile units additionally determine a variance estimate for each time of arrival estimates, which is representative of the degree of confidence in the time of arrival information being supplied to the network.