(12) United States Patent (10) Patent No.: US 9,134,398 B2 Dupray Et Al
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USOO9134398B2 (12) United States Patent (10) Patent No.: US 9,134,398 B2 Dupray et al. (45) Date of Patent: Sep. 15, 2015 (54) WIRELESS LOCATION USING NETWORK (56) References Cited CENTRC LOCATION ESTMLATORS U.S. PATENT DOCUMENTS (75) Inventors: Dennis J. Dupray, Golden, CO (US); M Charles L. Karr, Tuscaloosa, AL (US); 3,630,079 A 12/1971 Hughes et al. Sheldon F. Goldberg, Las Vegas, NV 3,646,580 A 2f1972 Fuller et al. (US) (Continued) (73) Assignee: TracBeam LLC, Golden, CO (US) FOREIGN PATENT DOCUMENTS (*) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 EP O1772O3 4f1986 U.S.C. 154(b) by 0 days. EP O346461 12/1989 (21) Appl. No.: 13/323,221 (Continued) (22) Filed: Dec. 12, 2011 OTHER PUBLICATIONS O O Defendants' Motion for Partial Summary Judgment of Invalidity (65) Prior Publication Data Based on Indefiniteness filed in the United States District Court for the Eastern District of Texas, Tyler Division, at Case No. 6: 11-cv US 2012/O190380 A1 Jul. 26, 2012 00096-LED, on Sep. 25, 2012, 22 pages. (Continued) Related U.S. Application Data Primary Examiner — Dao Phan (63) Continuation-in-part of application No. 1 1/739,097, (74) Attorney, Agent, or Firm — Dennis J. Dupray filed on Apr. 24, 2007, which is a continuation of y y application No. 09/194,367, filed as application No. (57) ABSTRACT PCT/US97/15892 on Sep. 8, 1997, now Pat. No. A wireless location system is disclosed- 0 having one or more (Continued) location centers for locating mobile stations (MS) based on, e.g., WIFI, CDMA, AMPS, NAMPS, TDMA, GPRS, and (51) Int. Cl. GSM. MS location requestsC can be pprocessed via,1a, e.ge.g., Inter GOIS I/02 (2010.01) net communication between a network of location centers. A GOIS5/00 2OO 6. O1 plurality of MS locating technologies may be used, including ( .01) those based on: two-way TOA and TDOA: pattern recogni (Continued) tion; distributed antennas; and reduced coverage base sta (52) U.S. Cl tions. The system includes strategies for: automatically AV e. we adapting and calibrating system performance according to CPC (2013.01). SE (OS28 E. environmental and geographical changes; automatically cap ( .01): ( .01): turing location signal data for enhancing a historical database (2013.01); retaining predictive location signal data; evaluating MS loca (Continued) tions according to heuristics and constraints related to, e.g., (58) Field of Classification Search terrain, MS velocity and path; and adjusting likely MS loca tions adaptively and statistically. The system is useful for CPC ....... G01S 5/06; G01S 5/0221; G01S 5/0252: emergency calls, tracking, routing, people and animal loca tion including applications for confinement to and exclusion USPC ............ 342/357.73, 450, 453, 457, 465, 451, from certain areas. 342/463; 455/4.56.1, 456.3, 456.6 See application file for complete search history. 37 Claims, 62 Drawing Sheets is LOCATION NFORMATION DATABASES e is SWITCHING CENTER112 HYPOTHESISEALUATOR 1228 's "MOSTLIKELY"Location HYPOTHESISDETERMINATION ERRORRENTALDATAPROVIDERS E.g. APPLICATIONS PROVIDING TRAFFICFlow, ETWORK 124 i-R oUTPUTGATEWAY WEATHER, Etc. ARINTERFET FoRDESIGNATED 468 EvoNENTALDATABASEs LOCATION LOCATION APPLICATIONS146 sc. APPictions35 US 9,134,398 B2 Page 2 Related U.S. Application Data 4,891,650 1, 1990 Sheffer 4,891,761 1, 1990 Gray et al. 7,764,231. 4,893,325 1, 1990 Pankonen et al. 4,903,212 2, 1990 Yokouchi et al. 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