WO2001001715A1 - Procede de reperage avec un systeme radiotelephonique mobile - Google Patents

Procede de reperage avec un systeme radiotelephonique mobile Download PDF

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Publication number
WO2001001715A1
WO2001001715A1 PCT/DE2000/001958 DE0001958W WO0101715A1 WO 2001001715 A1 WO2001001715 A1 WO 2001001715A1 DE 0001958 W DE0001958 W DE 0001958W WO 0101715 A1 WO0101715 A1 WO 0101715A1
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WO
WIPO (PCT)
Prior art keywords
location method
determined
positions
base station
service cell
Prior art date
Application number
PCT/DE2000/001958
Other languages
German (de)
English (en)
Inventor
Harry-Hermann Evers
Gustav Thiesing
Manfred Garben
Ralf Kohlen
Rainer Voigt
Manfred Wermuth
Original Assignee
Blic Beratungsgesellschaft Für Leit-, Informations- + Computertechnick Mbh
Ivu - Gesellschaft Für Informatik, Verkehrs- Und Umweltplanung Mbh
Wvi Verkehrsforschung Und Infrastrukturplanung Gmbh
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
Application filed by Blic Beratungsgesellschaft Für Leit-, Informations- + Computertechnick Mbh, Ivu - Gesellschaft Für Informatik, Verkehrs- Und Umweltplanung Mbh, Wvi Verkehrsforschung Und Infrastrukturplanung Gmbh filed Critical Blic Beratungsgesellschaft Für Leit-, Informations- + Computertechnick Mbh
Priority to AU18399/01A priority Critical patent/AU1839901A/en
Publication of WO2001001715A1 publication Critical patent/WO2001001715A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0205—Details
    • G01S5/0244—Accuracy or reliability of position solution or of measurements contributing thereto
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/0009—Transmission of position information to remote stations
    • G01S5/0018—Transmission from mobile station to base station
    • G01S5/0036—Transmission from mobile station to base station of measured values, i.e. measurement on mobile and position calculation on base station
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/20—Monitoring the location of vehicles belonging to a group, e.g. fleet of vehicles, countable or determined number of vehicles

Definitions

  • the invention relates to a location method with a mobile radio system with base station transceivers and mobile terminals, each base station transceiver forming a service cell for communication with the mobile terminals in the service cell.
  • GPS location methods are known in which the positions can be determined relatively precisely with the aid of navigation satellites.
  • the method disadvantageously requires relatively complex and expensive GPS navigation receivers. These are energy-intensive and prone to failure. Since the GPS system is also used for military purposes, a GPS location procedure is not functional in the event of a crisis. In addition, there are receiving holes z. B. in subways, tunnels, etc., in which a GPS position determination is not possible.
  • FCD method Floating Car Data
  • vehicle-related parameters such as position and speed are determined with sensors that are installed in the vehicles and transmitted to a control center via radio data transmission.
  • the FCD method disadvantageously requires a corresponding upgrade of the vehicles with GPS and a communication system.
  • DE-OS 37 16 320 AI describes a method for determining the position with the aid of mobile telephones, in which a position is determined with the aid of the base station number, a base station in whose radio cell the mobile telephone is located. In this way, the positional accuracy of the radio cell can be determined.
  • the field strength information of the base station is measured as additional location information and compared with known target values. However, the field strength information cannot be clearly assigned to the positions. In addition, they are heavily dependent on environmental influences.
  • EP-PS 0 777 863 B1 describes a navigation information system in which mobile units are determined via a GPS receiver or via a radio location system of the communication system and the positions of the mobile units are sent to a control center.
  • the route planning takes place in a control center, which uses a database with geographic data. This eliminates the need for a complex navigation system in the vehicle.
  • the GPS system can determine relatively precise coordinates. This is however relatively expensive and complex.
  • the system also has the disadvantage that the traffic behavior can only be determined in defined zones.
  • WO 98/12683 A describes a method for recording traffic data with mobile phones, in which the position of the mobile phone is determined with the aid of the base station identifier and with radio information. The position is assigned to the route network in the cell, which is stored in a geographical information database.
  • a particular route is determined in particular by evaluating the change in cell identification. This route is assigned to the traffic routes that are available for these determined routes. Such a method is also described in DE-OS 197 55 891 AI.
  • the object of the invention was to improve a locating method with a mobile radio system, which requires little additional effort for data entry and, if possible, no additional infrastructure and can also be used by non-motorized road users (pedestrians, cyclists, users of the public transport system), in such a way that a accurate position determination with a low computing and hardware expenditure is made possible.
  • the task is solved by the location method according to claim 1 by the steps of:
  • RXLEV reception field strengths
  • BTS base station transceivers
  • the mobile radio system consists of a plurality of base stations, each with one or more base station transceivers.
  • the base stations together span a radio network.
  • One base station transceiver supplies a so-called radio cell.
  • Several base station transceivers can be positioned together at a geographical location.
  • the area supplied by a base station usually consists of several sectors, each sector corresponding to a radio cell, having its own service cell identification and being supplied by a base station transceiver.
  • the base station is identified by a base station identifier and the cells are identified by a service cell identifier. These identifiers are available as digital codes and are broadcast by the base station transceivers.
  • the object of the invention is achieved in that the reception field strengths for a plurality of receivable base station transceivers are measured and evaluated in that field strengths of different base station transceivers are in each case related to one another. In this way, several field strength data are determined for each position. Corresponding reference data from reference field strengths are stored in the control center in a position-dependent manner, which are either determined analytically or obtained with the aid of measurement drives. Characteristic patterns of reception determine the field strengths of the receivable base station transceivers. The actually received interrelated field strength patterns can be compared with the corresponding reference patterns by means of a pattern comparison and the position can be determined therefrom. This pattern comparison only needs to be carried out in the area roughly determined by the method.
  • the pattern comparison is thus according to the invention with a fuzzy logic, e.g. B. performed a fuzzy logic and it is not necessary an absolute match of the measured field strength with the reference field strength.
  • the pattern recognition can also be carried out with the aid of variables which are derived from the reception field strength.
  • the accuracy of the positions determined can be increased by superimposing the spatial reception areas of the respective receivable base station transceivers and determining the intersection of the reception areas. This takes advantage of the fact that each operational mobile terminal in the switched-on state is assigned to a service cell depending on its location and that the currently assigned service cell and the are assigned at fixed time intervals independent of a call other visible service cells.
  • the determined positions can by means of a compensation calculation, e.g. B. be corrected with the help of a Kalmann filter. It is also advantageous to extrapolate the positions determined and to correct the positions calculated in this way by means of a compensation calculation.
  • a compensation calculation e.g. B. be corrected with the help of a Kalmann filter. It is also advantageous to extrapolate the positions determined and to correct the positions calculated in this way by means of a compensation calculation.
  • the available traffic routes in the area of the determined positions can advantageously be selected and the determined positions can be projected and corrected onto the available traffic routes. It is also advantageous to determine the speed from the determined positions and the corresponding time information and to correct the determined positions using the speeds. Traffic routes that usually do not allow movement at the calculated speeds can be excluded.
  • the possible means of transportation can be determined from the speed, the direction of movement and / or the available traffic routes, and the positions determined can be based on those for the possibly used means of transportation available traffic routes are projected and corrected. If e.g. B. A pedestrian is recognized due to a continuous slow speed, all railroad tracks can be disregarded for the correction of the positions.
  • a geographic information system is advantageously used for the logical order, in which the traffic networks, travel routes and physical boundary parameters such as possible speeds are stored. Such a geographical information system also makes it possible to exclude route stumps as possible traffic routes that do not lead to the identified service cells and point them out. In addition, traffic routes can be excluded by comparing the travel time between the determined positions with the possible travel times for the available traffic routes.
  • the locating method is preferably used to record the traffic behavior of both motorized individual traffic and public transport, additional information such as the purpose of the journey, means of transport etc. being entered into the mobile terminal, transmitted to the central office and there z. B. can be statistically evaluated.
  • the location procedure is not limited to a statistical traffic situation recording, but an individual observation the traffic behavior is enabled, the calculated route can be easily calculated with little additional effort.
  • Figure 1 Systematics of partial location procedures
  • Figure 2 Location in a mobile radio network based on the received field strengths and the superimposition of the reception areas four base station transceivers;
  • Figure 3 reference field strengths of three base station transceivers on the way on a road section for pattern recognition
  • Figure 4 Logical location to increase the location accuracy
  • Figure 5 Logical location by evaluating routes in
  • Figure 6 Telematic recording of traffic behavior using the location procedure.
  • the system of the partial location methods is outlined in FIG. 1, the location accuracy being able to be increased with the aid of a combination of the various methods.
  • Data and measured variables are evaluated which are provided by the mobile radio network and received, selected and stored by the mobile terminal. The following data are generally available for location:
  • the service cell via which a possible call is processed and to which the mobile device is allocated depending on the location, is identified on the basis of the variables MNC, MCC, LAI, CI and BSIC.
  • the service cell within which the mobile device is located can thus be determined.
  • metropolitan areas have a significantly higher density of base stations than rural areas.
  • the traffic areas are therefore smaller in metropolitan areas than in sparsely populated areas. From this it follows that the location of an operational terminal in metropolitan areas is possible with much higher accuracy than in rural areas.
  • the location accuracy can be increased by identifying the reception areas. Since the reception areas of base station transceivers often overlap in metropolitan areas, information about the reception of further, neighboring base station transceivers can be used to locate the current location of the mobile terminal.
  • FIG. 2 shows a basic sketch of the location on the basis of the reception field strengths of four base station transceivers BTS1-BTS4 and an overlay of the reception areas.
  • the reception areas of the four base station transceivers BTS1 - BTS4 are outlined in an oval shape. If all four base station transceivers BTS1 - BTS4 can be received, the mobile receiving device is located within the darkly marked intersection of the reception areas. The accuracy due to the reception area identification increases with the number of received Base station transceiver BTS.
  • the information about the reception areas is stored in the control center, where the evaluation is also carried out.
  • the location accuracy can be further increased by step 3 according to Figure 1 with the help of a pattern recognition.
  • reception field strengths or level strengths RXLEV of the service cell and several neighboring cells are determined and compared with reference field strengths, which are stored in a reference database.
  • FIG. 3 shows an example of a level pattern recorded for a road section, in which the received field strengths RXLEV from three base station transceiver systems BTS1-BTS3 are recorded over one path.
  • the different lines illustrate the receive signals RXLEV-1 to RXLEV-3 of the base station transceivers BTS1 - BTS3 of the individual radio cells.
  • the differences or quotients between the received field strengths RXLEV of the base station transceivers BTS are formed for each waypoint and compared with corresponding values which are formed from a recorded reference pattern.
  • the received field strengths, differences thereof or other mathematical combinations of all possible level information such as. B. polynomials, exponential functions or logarithms can be compared.
  • the use of quotients has the advantage that no absolute measured variables are taken into account in the comparison.
  • FIG. 3 shows that each waypoint has its own level pattern, which largely differs from the level patterns of other waypoints. Uncertainties in the location can be eliminated by additionally determining the direction of travel by taking into account the increase and decrease in the level pattern. As a result, the location accuracy can be increased.
  • the reference samples can either be obtained by measuring runs. However, they can also be determined analytically using suitable software programs.
  • the pattern recognition can e.g. B. using fuzzy logic, wherein a tolerance threshold for the agreement of the actual level pattern with the stored reference pattern is set.
  • the pattern recognition is preferably carried out with the parameters pattern depth, i. H. Number of level differences taken into account, and pattern tolerance, i.e. H. Deviation within the level differences.
  • pattern depth i. H. Number of level differences taken into account
  • pattern tolerance i.e. H. Deviation within the level differences.
  • H. Level differences are evaluated. The lower the tolerance threshold, the more closed and larger the areas of comparable patterns.
  • a high tolerance, i.e. H. a large permissible deviation of the level difference from the reference value contributes greatly to the stability of the method, since statistical fluctuations are compensated for.
  • the location accuracy can be further increased by a logical location according to step 4 of FIG. 1.
  • the method of logical location can be carried out in connection with any of the methods 1 to 3 described above (identification of the service cell, reception area identification, pattern recognition).
  • the principle of logical location is shown in FIG. 4. It is envisaged to extrapolate the route course on the basis of the positions already determined with the aid of geographic information, which can be stored in a geographic information system (GIS).
  • GIS geographic information system
  • the available traffic routes and physical parameters, such as B. the speed, traffic rules, etc. are taken into account. Extrapolation excludes traffic routes that are incompatible with the speed, direction, mode of transport, etc. that have already been determined.
  • This modeled extrapolated route is carried out a compensation calculation of the determined positions and the location accuracy is increased in this way.
  • step b After the service cell of the start and destination points CI1 and CI2 have been determined in the first step a), in the next step b) all traffic routes in the selected regions between the start and the destination cell are determined using a traffic route map. In the next step c), branch streets and all streets that do not lead to the target cell are eliminated. A coherent network in the cells of the journey is thus determined. Then, in step d), all routes in the cells of the route that can be traveled in the connected network are determined. The routes include all conceivable traffic routes. In step e), the means of transport used and the speeds are taken into account when selecting the possible routes.
  • At crossing points, e.g. B. Exclude traffic routes that require a change or that are not accessible in the determined time. So z. B. a driver does not change at short notice in an intermediate route to a train route. Likewise, a driver will not switch to a pedestrian zone at a junction and will use the car again at the end of the pedestrian zone in the second junction.
  • the possible traffic routes in the start and destination are determined, which adjoin the nodes identified there, and the further course of the journey is extrapolated. Since the service cells have been identified continuously, one of the two possible routes shown in step f) can be clearly determined, since these run through different cells in front of the target cell. The route is now determined with the Route correlates so that the route for traffic behavior analysis can be determined exactly.
  • the described method for recording traffic behavior can be used in a telematics system. Due to the widespread use of mobile phones, which only need to be modified by additional functions, it is possible to record the behavioral data of road users very precisely over longer periods of time.
  • the modification can be carried out by updating the software in the mobile phone via radio and storing the programs in a freely programmable memory unit from the control center. After the user in the mobile phone a travel purpose and possibly. If further information such as the type of parking space at the destination, number of passengers etc. has been entered on the mobile phone, the additional location data is automatically recorded with the help of the mobile phone and transmitted to an evaluation center via the mobile radio network and, if appropriate, further communication or transmission facilities. The exact positions are calculated there and made available for further processing.
  • the data about the located vehicles or road users can be used for congestion reporting, for logistics, for parking space management and for researching traffic behavior. Furthermore, the location procedure can also be used to determine the traffic behavior of pedestrians and users of public transport in a timely manner, so that the operators of public transport are able to better adapt their travel offer to the respective demand. On the basis of the additional information, in particular on the purpose of driving, further statistical statements regarding leisure behavior can also be made. This data can also be used for urban planning.
  • the location procedure can e.g. B. in connection with conventional survey methods, such as traffic counts, traffic observations and household surveys can be used to plan traffic by using the data obtained for the analytical calculation of a traffic model.
  • the location method has the advantage that, as a result of the continuous and long-term recording of traffic behavior, there is a constant increase in information, so that the model becomes more and more precise over time.
  • the recording is event-related (online) and can also be carried out in offline mode.

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

Abstract

L'invention concerne un procédé de repérage avec un système radiotéléphonique mobile muni d'émetteurs-récepteurs de station de base (BTS) et de stations mobiles, dans lequel chaque émetteur-récepteur de station de base (BTS) forme une cellule de service pour la communication avec les stations mobiles dans la cellule de service. Le procédé selon l'invention comporte les étapes suivantes : a) détermination et sauvegarde des identifications de la cellule de service associée et d'informations temporelles; b) transmission des identifications de cellule de service sauvegardées et des informations temporelles à une centrale; c) détermination des positions à partir des identifications de cellule de service par comparaison avec des données géographiques correspondantes par l'intermédiaire des cellules de service du réseau radiotéléphonique mobile.
PCT/DE2000/001958 1999-06-23 2000-06-21 Procede de reperage avec un systeme radiotelephonique mobile WO2001001715A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU18399/01A AU1839901A (en) 1999-06-23 2000-06-21 Location method using a mobile radiotelephone system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19928451A DE19928451A1 (de) 1999-06-23 1999-06-23 Ortungsverfahren mit einem Mobilfunksystem
DE19928451.2 1999-06-23

Publications (1)

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WO2001001715A1 true WO2001001715A1 (fr) 2001-01-04

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DE (1) DE19928451A1 (fr)
WO (1) WO2001001715A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10142954A1 (de) * 2001-09-01 2003-04-03 Ivu Traffic Technologies Ag Verfahren zur Ortung mit einem mobilen Endgerät
DE10142953A1 (de) * 2001-09-01 2003-04-03 Ivu Traffic Technologies Ag Verfahren zur Ortung mit einem mobilen Endgerät
DE10344118A1 (de) * 2003-09-24 2005-05-04 Prodim Consult Ges Fuer Produk Verfahren zur Ermittlung der Menge von Objekten sowie Einrichtung und Ortungsmodul hierzu
DE10356496A1 (de) * 2003-12-03 2005-07-07 Siemens Ag Verfahren zur Positionsbestimmung einer Teilnehmerstation eines Funkkommunikationssystems sowie Positionsbestimmungseinheit
DE102008004138A1 (de) 2007-05-11 2008-11-20 Pretherm Gmbh Verfahren zur automatisierten Abrechnung von Mehrwertdiensten und mobiles Endgerät und Abrechnungssystem hierzu
DE102005048647B4 (de) * 2005-10-11 2011-03-17 Wvi Prof. Dr. Wermuth Verkehrsforschung Und Infrastrukturplanung Gmbh Verfahren zur Ermittlung der Anzahl von Fahrgästen in öffentlichen Verkehrsmitteln

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DE10029115A1 (de) * 2000-06-14 2001-12-20 Mannesmann Ag Verfahren zur Erfassung von Verkehrslagedaten
DE10142951B4 (de) * 2001-09-01 2008-04-17 Harry-H. Evers Mobilfunksystem
EP1359431A1 (fr) * 2002-04-30 2003-11-05 Alcatel Procédé et serveur correspondant pour déterminer la position d'un terminal mobile
DE10224501A1 (de) * 2002-05-31 2003-12-11 Artem Gmbh Verfahren zur Positionsbestimmung eines Mobilgeräts in einem Kommunikationssystem und Kommunikationssystem
DE10343486A1 (de) 2003-09-19 2005-04-14 Robert Bosch Gmbh System für die Vermittlung von Diensten
GB0421721D0 (en) * 2004-09-30 2004-11-03 Sec Dep For The Home Departmen Improvements in and relating to investigations
FR2907620B1 (fr) * 2006-10-23 2009-02-06 Inrets Procede et dispositif de localisation par detection d'emetteurs de signaux hertziens.
DE102007028114A1 (de) * 2007-03-16 2008-09-25 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zur Lokalisierung von Endgeräten
EP1978771A1 (fr) * 2007-04-05 2008-10-08 Nederlandse Organisatie voor Toegepast-Natuuurwetenschappelijk Onderzoek TNO Détection d'emplacement

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10142954A1 (de) * 2001-09-01 2003-04-03 Ivu Traffic Technologies Ag Verfahren zur Ortung mit einem mobilen Endgerät
DE10142953A1 (de) * 2001-09-01 2003-04-03 Ivu Traffic Technologies Ag Verfahren zur Ortung mit einem mobilen Endgerät
DE10142953B4 (de) * 2001-09-01 2010-08-05 Harry-H. Evers Verfahren zur Ortung mit einem mobilen Endgerät
DE10142954B4 (de) * 2001-09-01 2011-12-29 Harry-H. Evers Verfahren zur Ortung mit einem mobilen Endgerät
DE10344118A1 (de) * 2003-09-24 2005-05-04 Prodim Consult Ges Fuer Produk Verfahren zur Ermittlung der Menge von Objekten sowie Einrichtung und Ortungsmodul hierzu
DE10344118B4 (de) * 2003-09-24 2008-12-04 prodim consult Gesellschaft für Produktionsdaten- und Informationsmanagement mbH Verfahren zur Ermittlung einer geschätzten Menge von Objekten sowie Einrichtung hierzu
DE10356496A1 (de) * 2003-12-03 2005-07-07 Siemens Ag Verfahren zur Positionsbestimmung einer Teilnehmerstation eines Funkkommunikationssystems sowie Positionsbestimmungseinheit
DE102005048647B4 (de) * 2005-10-11 2011-03-17 Wvi Prof. Dr. Wermuth Verkehrsforschung Und Infrastrukturplanung Gmbh Verfahren zur Ermittlung der Anzahl von Fahrgästen in öffentlichen Verkehrsmitteln
DE102008004138A1 (de) 2007-05-11 2008-11-20 Pretherm Gmbh Verfahren zur automatisierten Abrechnung von Mehrwertdiensten und mobiles Endgerät und Abrechnungssystem hierzu
DE102008004138B4 (de) * 2007-05-11 2012-02-16 Pretherm Gmbh Verfahren zur automatisierten Abrechnung von Mehrwertdiensten und mobiles Endgerät und Abrechnungssystem hierzu

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DE19928451A1 (de) 2001-01-11
AU1839901A (en) 2001-01-31

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