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:
Jun. 03, 2008
Filed:
Mar. 07, 2002
James D. Deloach, Jr., Sunnyvale, CA (US);
Alkinoos H. Vayanos, San Diego, CA (US);
Bruce Wilson, Palo Alto, CA (US);
Richard John Girerd, Mountain View, CA (US);
Grant Marshall, Campbell, CA (US);
Mark Moeglein, Ashland, OR (US);
Roland Rick, San Diego, CA (US);
Scott Smith, San Jose, CA (US);
Sunil Patel, San Jose, CA (US);
Wyatt Riley, Fremont, CA (US);
Zoltan Biacs, San Mateo, CA (US);
James D. Deloach, Jr., Sunnyvale, CA (US);
Alkinoos H. Vayanos, San Diego, CA (US);
Bruce Wilson, Palo Alto, CA (US);
Richard John Girerd, Mountain View, CA (US);
Grant Marshall, Campbell, CA (US);
Mark Moeglein, Ashland, OR (US);
Roland Rick, San Diego, CA (US);
Scott Smith, San Jose, CA (US);
Sunil Patel, San Jose, CA (US);
Wyatt Riley, Fremont, CA (US);
Zoltan Biacs, San Mateo, CA (US);
Qualcomm Incorporated, San Diego, CA (US);
Abstract
In a wireless telecommunication network, hybrid (GPS and AFLT) mobile stations provide redundant position information, which is used for time base calibration and/or correction of position measurements. Every mobile station (i.e., handset or cellular phone) can be used as a test instrument, and data from regular wireless phone calls can be supplemented by data from drive-around field test units. The time base and/or position offsets are stored in a base station almanac data base along with other information used for obtaining the most reliable position fixes under a variety of conditions. An automatic system is provided for creating, updating, and maintaining the base station almanac data base. The automatic system not only characterizes the performance of the wireless network but also characterizes the performance of the position determination system. The automatic system provides performance feedback to system operators and customers.