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:
Apr. 18, 2006
Filed:
Nov. 14, 2001
David P. Goren, Smithtown, NY (US);
Dean Kawaguchi, San Jose, CA (US);
Raj Bridgelall, Mount Sinai, NY (US);
Benjamin J. Bekritsky, New York, NY (US);
Chris Zegelin, San Jose, CA (US);
David P. Goren, Smithtown, NY (US);
Dean Kawaguchi, San Jose, CA (US);
Raj Bridgelall, Mount Sinai, NY (US);
Benjamin J. Bekritsky, New York, NY (US);
Chris Zegelin, San Jose, CA (US);
Symbol Technologies, Inc., Holtsville, NY (US);
Abstract
The location of unmodified wireless assets in a wireless communication network may be identified using time differences of arrivals of a communication sequence at different network receivers. Time-stamping devices may include correlator circuits in parallel with signal decoders to time-stamp communication sequences. Cellular wireless networks may be frequency-multiplexed to increase spatial time-stamping density. Tags may be attached to passive assets to provide location identification information to network devices. Locations of assets broadcasting standard 802.11 radio frequency structures may be identified. Noise inherent in correlating a communication sequence may be reduced by using a selected correlation function.