(WO/2001/015469) METHOD FOR TRACKING THE LOCATION OF MOBILE UNITS

(WO/2001/015469) METHOD FOR TRACKING THE LOCATION OF MOBILE UNITS

Latest bibliographic data on file with the International Bureau
Pub. No.:  WO/2001/015469   International Application No.:  PCT/US2000/009176
Publication Date:01.03.2001 International Filing Date:06.04.2000
Chapter 2 Demand Filed: 21.03.2001
IPC: G01S 1/02 (2006.01), G01S 3/02 (2006.01), G01S 5/04 (2006.01), G01S 5/06 (2006.01), H04W 64/00 (2009.01)
Applicant:INTECH 21, INC. [US/US]; 50 Glen Street, Glen Cove, NY 11542 (US).
Inventors:ZELMANOVICH, Helena; (US).
ZELMANOVICH, Victor; (US).
BILENKO, George; (US).
Agent:SCHAEFER, Ira, J.; Clifford Chance Rogers & Wells LLP, 200 Park Avenue, New York, NY 10166-0153 (US).
Priority Data:
09/383,812 26.08.1999 US
Title: METHOD FOR TRACKING THE LOCATION OF MOBILE UNITS
Abstract: A method for tracking the location of mobile units (40), comprises providing a plurality of mobile units (40) each having a wireless transmitter and a unique address and at least one stationary base unit (20) having a phase array antenna (30) with antenna elements. A signal including an address is received from at least one mobile unit (40) by the at least one base unit (20) via the phase array antenna (30). The phase difference of the signal arriving at the antenna elements from each mobile unit (40) is measured and the coordinates of the location of each mobile unit (40) are calculated as a function of the phase differences.
Designated States: AE, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CR, CU, CZ, DE, DK, DM, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Org. (ARIPO) (GH, GM, KE, LS, MW, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (EAPO) (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (OAPI) (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language:English (EN)
Filing Language:English (EN)

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