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:
Jul. 07, 2009
Filed:
Aug. 21, 2007
Bretton Lee Douglas, San Jose, CA (US);
Timothy S. Olson, San Jose, CA (US);
David E. Halasz, Stow, OH (US);
John Z. Deng, Canton, OH (US);
Arnold M. Bilstad, Redwood City, CA (US);
Sheausong Yang, Saratoga, CA (US);
Richard D. Rebo, North Royalton, OH (US);
Jonathan S. Leary, Boston, MA (US);
Daryl A. Kaiser, Los Gatos, CA (US);
Bretton Lee Douglas, San Jose, CA (US);
Timothy S. Olson, San Jose, CA (US);
David E. Halasz, Stow, OH (US);
John Z. Deng, Canton, OH (US);
Arnold M. Bilstad, Redwood City, CA (US);
Sheausong Yang, Saratoga, CA (US);
Richard D. Rebo, North Royalton, OH (US);
Jonathan S. Leary, Boston, MA (US);
Daryl A. Kaiser, Los Gatos, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
Determining the location of a radio tag or client station of a wireless network, and the location of coverage holes by receiving from a plurality of wireless stations of the wireless network path loss information of the path loss of one or more location frames received at the respective wireless stations. The location frames transmitted by the radio tag or client station having a pre-defined frame structure. The radio tags and client stations use a common infrastructure for transmitting a location frame configured for radiolocation by path loss measurement. The common infrastructure includes a pre-defined protocol common for both radio tags and client stations for transmitting information for reception by the plurality of stations of the wireless network for radiolocation. The pre-defined protocol includes using the location frame having the pre-defined frame structure.