Title of Invention

# A METHOD FOR DETERMINING IN A PROCESSING UNIT THE LOCATION OF DEVICE

Abstract A method and apparatus for use in a hybrid position location system. The method and apparatus combines measurements from Global Positioning System (GPS) and terrestrial transceiver stations to compute the location of a device. An algebraic solution to hybrid position location system equations is output from the method and apparatus. The method and apparatus determines the position of a device using a non-iterative method, as against the use of a conventional iterative least mean square method. The method of the present invention can be used to solve the location system equations in scenarios where a non-iterative solution is desirable. In certain scenarios, the location system equations may have two possible solutions. An iterative method would converge on one of the solutions, without any indication of the existence of the other ambiguous solution. Moreover, the iterative method may converge on the incorrect of the two ambiguous solutions. Use of the presently disclosed method and apparatus yields both the ambiguous solutios. The disclosed method may be followed up with iterative methods, using the solutions from the algebraic method as initial estimates of the device location for the iterative method. A different process can then select the correct solution. Thus, the algebraic method can be used to detect the existence of ambiguous solutions, and to find both solutions.

### Documents:

in-pct-2002-0863-che abstract.pdf

in-pct-2002-0863-che claims-duplicate.pdf

in-pct-2002-0863-che claims.pdf

in-pct-2002-0863-che correspondences-others.pdf

in-pct-2002-0863-che correspondences-po.pdf

in-pct-2002-0863-che description (complete)-duplicate.pdf

in-pct-2002-0863-che description (complete).pdf

in-pct-2002-0863-che drawings.pdf

in-pct-2002-0863-che form-1.pdf

in-pct-2002-0863-che form-19.pdf

in-pct-2002-0863-che form-26.pdf

in-pct-2002-0863-che form-3.pdf

in-pct-2002-0863-che form-5.pdf

in-pct-2002-0863-che others.pdf

in-pct-2002-0863-che pct.pdf

in-pct-2002-0863-che petition.pdf

Patent Number 216152
Indian Patent Application Number IN/PCT/2002/863/CHE
PG Journal Number 13/2008
Publication Date 31-Mar-2008
Grant Date 10-Mar-2008
Date of Filing 07-Jun-2002
Name of Patentee QUALCOMM INCORPORATED
Applicant Address 5775 Morehouse Drive, San Diego, California 92121-1714,
##### Inventors:
1 FERNANDEZ-CORBATON, Ivan, J 919 Diamond Street San Diego, California 92109,
2 VAYANOS, Alkinoos, Hector 1134 South Felspar Street, #2 San Diego, California 92109,
3 AGASHE, Parag, A 10173 Camino Ruiz #4, San Diego, California 92126,
4 SOLIMAN, Samir, S 11412, Cypress Canyon Park Drive San Diego, California 92131,
PCT International Classification Number G01S 5/14
PCT International Application Number PCT/US00/33375
PCT International Filing date 2000-12-07
##### PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 09/460,180 1999-12-10 U.S.A.