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:
Oct. 16, 2012
Filed:
Jul. 23, 2009
Kameswara Medapalli, Santa Clara, CA (US);
Robert G. Lorenz, Santa Clara, CA (US);
Bertrand Hochwald, Santa Clara, CA (US);
Arogyaswami Paulraj, Santa Clara, CA (US);
Kameswara Medapalli, Santa Clara, CA (US);
Robert G. Lorenz, Santa Clara, CA (US);
Bertrand Hochwald, Santa Clara, CA (US);
Arogyaswami Paulraj, Santa Clara, CA (US);
Broadcom Corporation, Irvine, CA (US);
Abstract
A method and apparatus of estimating a location of a subscriber are disclosed. One method includes receiving a request for the location of the subscriber. The subscriber's serving base station, and a plurality of neighboring base stations sensed by the subscriber, are identified. The subscriber obtains a time delay from the serving base. The subscriber estimates a distance between the subscriber and the serving base station. The subscriber receives frames and estimates a delta time for each of the selected neighboring base stations for the subscriber to synchronize to each of the selected neighboring base stations. The subscriber estimates distances between the subscriber and each of the selected neighboring base. The subscriber location is estimated by trilateration of the distance between the subscriber and the serving base station, and the distances between the subscriber and each of the selected neighboring base stations.