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WO2001020582B1 - Closed loop tracking system - Google Patents

Closed loop tracking system

Info

Publication number
WO2001020582B1
WO2001020582B1 PCT/US2000/025011 US0025011W WO0120582B1 WO 2001020582 B1 WO2001020582 B1 WO 2001020582B1 US 0025011 W US0025011 W US 0025011W WO 0120582 B1 WO0120582 B1 WO 0120582B1
Authority
WO
WIPO (PCT)
Prior art keywords
mobile unit
location data
tracking system
location
data
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2000/025011
Other languages
French (fr)
Other versions
WO2001020582A2 (en
WO2001020582A9 (en
WO2001020582A3 (en
Inventor
Pierce Lutter
Tracey Olson
Dan A Preston
Joe Preston
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Airbiquity Inc
Original Assignee
Airbiquity Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US09/531,367 external-priority patent/US6690681B1/en
Priority claimed from US09/602,593 external-priority patent/US6493338B1/en
Priority to EP00975193A priority Critical patent/EP1230632A2/en
Application filed by Airbiquity Inc filed Critical Airbiquity Inc
Priority to JP2001524084A priority patent/JP2004514185A/en
Priority to AU13274/01A priority patent/AU1327401A/en
Priority to CA002384778A priority patent/CA2384778A1/en
Publication of WO2001020582A2 publication Critical patent/WO2001020582A2/en
Publication of WO2001020582A3 publication Critical patent/WO2001020582A3/en
Publication of WO2001020582B1 publication Critical patent/WO2001020582B1/en
Anticipated expiration legal-status Critical
Publication of WO2001020582A9 publication Critical patent/WO2001020582A9/en
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/123—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams
    • G08G1/127—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams to a central station ; Indicators in a central station

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Navigation (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

A closed loop tracking system accurately tracks targets by polling a mobile unit for positional data on a real-time and historical basis. The polled data is filtered and corrected before generating track candidates. The tracking system chooses the best candidate for displaying on a map. When the tracking system needs additional information to make the best candidate choice, the mobile unit is polled for the data necessary to make the correct choice, making the tracking system closed loop. The tracking system transmits digital positional data over the same voice channel that was established for voice communications with a tracking system call taker. This prevents the mobile unit from having to establish a second separate wireless data communication connection with the tracking system. Maps are used to identify the location of the tracked mobile unit. Better positional accuracy in latitude and longitude is provided by using measurement corrections from a variety of different sources in addition to the Global Positioning System and triangulation data.

Claims

29AMENDED CLAIMS[received by the International Bureau on 7 May 2001 (07.05.01); original claims 1-15 replaced by amended claims 1-15 (2 pages)]
1. A system for tracking a device, comprising: a mobile unit that obtains location data and transfers the location data over an audio channel of a communications network also used for transmitting voice signals; and a tracking system that receives and transmits the location data and the voice signals over the audio channel back and forth with the mobile unit, the tracking system using the location data to identify a map location for the location data and then relaying the map location back to the mobile unit over the same audio channel either as digital data or as voice signals.
2. A system according to claim 1 wherein the tracking system requests location history from the mobile unit and calculates the map location based on location data history received back from the mobile unit.
3. A system according to claim 1 wherein the tracking system generates intersection and road candidates according to the received location data, identifies virtual tracks on the intersection and road candidates, and selects one of the virtual tracks that best matches the location data as a best virtual track.
4. A system according to claim 3 wherein the tracking system identifies a maneuver model that best represents actions of the mobile unit and then propagates the virtual tracks along the intersection and road candidates according to the identified maneuver model.
5. A system according to claim 1 wherein the location data is filtered either by the mobile unit or by the tracking system according to predetermined maneuver models for the mobile unit.
6. A system according to claim 5 wherein the maneuver models include no, low, medium and high speed maneuver models.
7. A system according to claim 5 wherein the location data is filtered according to how well the location data comes within distance, speed, and heading ranges identified in the maneuver models. 30
8. A system according to claim 7 wherein the location data not coming within the ranges is filtered in the mobile unit before being sent to the tracking system.
9. A system according to claim 1 wherein the mobile unit periodically obtains the location data from GPS satellites and then stores the location data as location history, the mobile unit then transmitting the location history over the audio channel when requested by the tracking system.
10. A system according to claim 1 wherein the mobile unit includes an inband signaling modem and a voice codec, the inband signaling modem converting the location data into audio tones that are encoded into audio data by the voice codec for transmitting over the audio channel.
11. A system according to claim 10 wherein the tracking system includes an inband signal modem that converts the encoded audio data into digital location data.
12. A system according to claim 1 wherein the mobile unit includes a wireless or wired connection to the tracking system for transmitting the location data.
13. A system according to claim 3 wherein a location of a best selected virtual track is used to identify an address for the location data.
14. A system according to claim 1 wherein the tracking system adapts location data for accurate display on uncorrected maps.
15. A system according to claim 1 wherein the location data having reduced accuracy is improved for accurate display on a corrected map.
31
Statement under Article 19
Claim 1 is patentable over the cited reference WO 9812862 to Herring. Herring does not disclose a mobile unit and tracking system that receive both location data and voice signals over the same audio channel as specified in claim 1. There is also no suggestion in Herring that both voice signals and location data are transferred back and fourth between the mobile unit and the tracking system over the same audio channel.
Conversely, Herring using a first pager system 12 to send a one way notification to the mobile unit of a location request. Then a second cell phone system 14 is then used by the mobile unit to send one way location data back to the call center 200. The call center 200 never sends location data or map locations back to the mobile unit as specified in claim 1.
PCT/US2000/025011 1999-09-13 2000-09-12 Closed loop tracking system Ceased WO2001020582A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA002384778A CA2384778A1 (en) 1999-09-13 2000-09-12 Closed loop tracking system
AU13274/01A AU1327401A (en) 1999-09-13 2000-09-12 Closed loop tracking system
EP00975193A EP1230632A2 (en) 1999-09-13 2000-09-12 Closed loop tracking system
JP2001524084A JP2004514185A (en) 1999-09-13 2000-09-12 Closed loop tracking system

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US15364599P 1999-09-13 1999-09-13
US60/153,645 1999-09-13
US09/531,367 2000-03-21
US09/531,367 US6690681B1 (en) 1997-05-19 2000-03-21 In-band signaling for data communications over digital wireless telecommunications network
US09/602,593 2000-06-22
US09/602,593 US6493338B1 (en) 1997-05-19 2000-06-22 Multichannel in-band signaling for data communications over digital wireless telecommunications networks
US65176600A 2000-08-30 2000-08-30
US09/ 2000-11-20

Publications (4)

Publication Number Publication Date
WO2001020582A2 WO2001020582A2 (en) 2001-03-22
WO2001020582A3 WO2001020582A3 (en) 2001-08-09
WO2001020582B1 true WO2001020582B1 (en) 2001-09-07
WO2001020582A9 WO2001020582A9 (en) 2002-10-03

Family

ID=27496102

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/025011 Ceased WO2001020582A2 (en) 1999-09-13 2000-09-12 Closed loop tracking system

Country Status (5)

Country Link
EP (1) EP1230632A2 (en)
JP (1) JP2004514185A (en)
KR (1) KR20030004296A (en)
CA (1) CA2384778A1 (en)
WO (1) WO2001020582A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0011797D0 (en) 2000-05-16 2000-07-05 Yeoman Group Plc Improved vehicle routeing
GB2377124A (en) * 2001-06-26 2002-12-31 Michael Edward Smith Map having a unique telephone number allowing a user to determine his position on the map
JP4236916B2 (en) * 2002-11-29 2009-03-11 綜合警備保障株式会社 Position information monitoring system and position information monitoring method
JP4730137B2 (en) * 2006-03-01 2011-07-20 トヨタ自動車株式会社 Mobile body safety evaluation method and mobile body safety evaluation apparatus
WO2019199250A2 (en) * 2017-10-26 2019-10-17 Turkcell Teknoloji Arastirma Ve Gelistirme Anonim Sirketi A real-time road visualization system
DE102023200507B4 (en) 2023-01-24 2024-12-05 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein Device and method for online georeferencing of camera images of map material with mobile devices

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5359529A (en) * 1992-05-15 1994-10-25 Zexel Corporation Route guidance on/off-route state filter
US5636122A (en) * 1992-10-16 1997-06-03 Mobile Information Systems, Inc. Method and apparatus for tracking vehicle location and computer aided dispatch
AU5143196A (en) * 1995-03-30 1996-10-16 Willy Palle Pedersen Communication of position signals from mobile units
US5922040A (en) * 1995-05-17 1999-07-13 Mobile Information System, Inc. Method and apparatus for fleet management
US5808565A (en) * 1996-02-20 1998-09-15 E-Systems, Inc. GPS triggered automatic annunciator for vehicles
US6069570A (en) * 1996-09-20 2000-05-30 Atx Technologies, Inc. Asset location system

Also Published As

Publication number Publication date
CA2384778A1 (en) 2001-03-22
KR20030004296A (en) 2003-01-14
EP1230632A2 (en) 2002-08-14
WO2001020582A2 (en) 2001-03-22
WO2001020582A9 (en) 2002-10-03
WO2001020582A3 (en) 2001-08-09
JP2004514185A (en) 2004-05-13

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