EP2064688A1 - Method for verifying information - Google Patents

Method for verifying information

Info

Publication number
EP2064688A1
EP2064688A1 EP07787572A EP07787572A EP2064688A1 EP 2064688 A1 EP2064688 A1 EP 2064688A1 EP 07787572 A EP07787572 A EP 07787572A EP 07787572 A EP07787572 A EP 07787572A EP 2064688 A1 EP2064688 A1 EP 2064688A1
Authority
EP
European Patent Office
Prior art keywords
information
vehicles
computing device
computer program
computer
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.)
Granted
Application number
EP07787572A
Other languages
German (de)
French (fr)
Other versions
EP2064688B1 (en
Inventor
Thomas May
Gerd Gottwald
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2064688A1 publication Critical patent/EP2064688A1/en
Application granted granted Critical
Publication of EP2064688B1 publication Critical patent/EP2064688B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/16—Anti-collision systems
    • G08G1/161—Decentralised systems, e.g. inter-vehicle communication
    • G08G1/163—Decentralised systems, e.g. inter-vehicle communication involving continuous checking

Definitions

  • the invention relates to a method for verifying information exchanged between vehicles, an electronic unit for carrying out the described method, a computer program and a computer program product.
  • networks in particular ad hoc networks, known between vehicles, which are constructed via a radio system and used to provide information or
  • WLANs wireless local area networks
  • OFDM orthogonal frequency division multiplexing
  • Vehicle can be considered safe.
  • these methods are complicated in terms of the required computing power.
  • the method according to the invention serves to verify information exchanged between vehicles, wherein based on received signals carrying the information, at least one variable relating to at least one of the vehicles, in particular a kinematic variable, is determined and based on this determination
  • verified information can be used for the benefit of the road user involved in the communication and thus for increasing driving safety.
  • Incorrect information is recognized as such and discarded.
  • a speed of the vehicle may, for example, among other things, a speed of the vehicle are determined.
  • frequency synchronization is used to measure a Doppler shift between the vehicles. From the double displacements can be the relative speeds of the vehicles calculate that have sent. Together with their own speed, the absolute speed of the other vehicles can be specified, at least on highways and country roads. The speed zero can be detected in any case. It can now be discarded data packets if the sending vehicle would have to move the information, but it actually has the speed zero, if, for example, a braking operation is signaled or the sending vehicle in the data a different airspeed tells than the measurement results.
  • signal processing techniques can be used to determine the remaining frequency deviation of the received signal.
  • the position of the vehicle can be determined.
  • the received signal power for each communication partner can be measured to obtain the
  • the distance of the communication partner can then be estimated. It is possible that the signal is received weaker due to multipath propagation and shading than in the undisturbed case, but it can not be received more strongly. Consequently, you can
  • Information or data packets are discarded if they are received more than the signaled position of the transmitting vehicle and the own position allow or if signals are received, although the sending vehicle signals a position that is out of range of the radio system.
  • information that results from two or more consecutive messages can additionally be used to verify the exchanged information.
  • messages are, for example, then assigned to the same sender if they contain an identifier of the sender or are transmitted in a time interval reserved for the sender.
  • Successive data packets of a communication partner can be discarded if the signaled speeds and / or positions in the time sequence do not match.
  • environment-capturing systems such as. Radar, video, etc.
  • the invention further relates to an electronic unit for verification of between
  • This electronic unit typically has a transmitting device for transmitting information and additionally a receiving device for receiving
  • the computer program with program code means according to the invention is suitable for carrying out all the steps of the described method when the computer program is executed on a computer or a corresponding computing device, in particular a computing device of the type described above.
  • the presented computer program product comprises program code means which are stored on a computer-readable data carrier to perform all the steps of a method described above, when the computer program is stored on a computer
  • Computer or a corresponding computing device such as, for example, a computing device in a described electronic unit is executed.
  • Figure 1 shows a schematic representation of an embodiment of the electronic unit according to the invention.
  • FIG. 2 illustrates an embodiment of the method according to the invention.
  • FIG. 1 shows an embodiment of the electronic unit according to the invention, which is generally designated by the reference numeral 10.
  • the electronic unit includes a
  • Computing device 12 a receiving device 14 and a transmitting device 16.
  • the components 12, 14 and 16 are connected to each other via data lines 18.
  • the illustrated electronic unit 10 is configured to communicate between a vehicle in which the unit 10 is provided and others
  • FIG. 2 illustrates an embodiment of the method according to the invention, in which case the frequency synchronization of the radio system used is used to measure the Doppler shift between one's own vehicle and another vehicle.
  • the ordinate 20 plots the frequency versus time (abscissa 22).
  • first information or a first message 24, a second message 26 and a third message 28 are shown, which are received by different subscribers at the frequencies fl 30, f2 32 and f3 34.
  • the radio system is operated at the frequency f 36. From the Doppler shifts (fl - f), (f2 - f) and (f3 - f), the relative speeds of the vehicles that sent the messages 24, 26 and 28 can be calculated.
  • the absolute speed of other vehicles can be specified, at least on motorways and highways.
  • Speed zero can be detected in any case. It is now possible to discard data packets if the transmitting vehicle would have to move according to the transmitted message 24, 26 or 28, but it actually has the speed zero if, for example, a braking process is signaled or the transmitting vehicle in the message 24, 26 or 28 indicates a different airspeed than is determined.
  • the described method in which the frequency synchronization of the radio system used is used to measure the Doppler shift, can be combined with other methods and procedures, as explained above.
  • the different approaches can also be used redundantly in order to achieve greater security and, if necessary, to be able to compare the results of the individual procedures with each other.

Abstract

Method for verifying information (24, 26, 28) which is exchanged between vehicles, an electronic unit and a computer program and a computer program product are presented. The described method provides that signals which are received and which bear the information (24, 26, 28) are used to determine at least a variable which relates to at least one of the vehicles, and the information (24, 26, 28) is treated on the basis of this determination.

Description

Beschreibung description
Titeltitle
Verfahren zur Verifikation von InformationenMethod for verifying information
Die Erfindung betrifft ein Verfahren zur Verifikation von zwischen Fahrzeugen ausgetauschten Informationen, eine elektronische Einheit zur Ausführung des beschriebenen Verfahrens, ein Computerprogramm sowie ein Computerprogrammprodukt.The invention relates to a method for verifying information exchanged between vehicles, an electronic unit for carrying out the described method, a computer program and a computer program product.
Stand der TechnikState of the art
Es sind Netzwerke, insbesondere Ad-hoc-Netzwerke, zwischen Fahrzeugen bekannt, die über ein Funksystem aufgebaut sind und dazu verwendet werden, Informationen bzw.There are networks, in particular ad hoc networks, known between vehicles, which are constructed via a radio system and used to provide information or
Nachrichten zwischen den Fahrzeugen auszutauschen. In den USA und Europa werden hierfür überwiegend drahtlose lokale Netzwerke (WLAN: wireless local area network) gemäß dem Standard IEEE 802.1 Ip verwendet. Dieses WLAN-Systeme basieren auf einem orthogonalen Wellenlängenmultiplexverfahren (OFDM: orthogonal frequency division multiplexing) und benötigen deshalb eine verhältnismäßig genaueExchange messages between vehicles. In the US and Europe, wireless local area networks (WLANs) are predominantly used in accordance with the IEEE 802.1 IP standard. These WLAN systems are based on orthogonal frequency division multiplexing (OFDM) and therefore require a relatively accurate
Frequenzsynchronisation.Frequency synchronization.
Dabei beruhen die Anwendungen dieser Funktechnik in Ad-hoc-Netzen auf dem Prinzip, dass jedes Fahrzeug periodisch Informationen sendet, die von allen anderen Fahrzeugen in der Funkreichweite empfangen werden. Einige Anwendungen sehen vor, dass dieseThe applications of this wireless technology in ad hoc networks are based on the principle that each vehicle periodically sends information that is received by all other vehicles in the radio range. Some applications provide this
Informationen von allen oder von bestimmten Fahrzeugen wiederholt werden und damit weiteren Teilnehmern zugänglich gemacht werden. Viele bekannte Anwendungen sollen zur Sicherheit im Straßenverkehr beitragen, indem diese Warnmeldungen über Bremsvorgänge, Glatteis, Unfälle usw. weitergeben, um betroffene Verkehrsteilnehmer über mögliche Gefahren zu informieren. Dabei stellt sich jedoch das Problem, dass diese Systeme missbraucht werden können, indem böswillig falsche Informationen eingespeist werden. Ohne ausreichende Sicherheit ist das System für den Fahrer nutzlos.Information from all or by certain vehicles are repeated and thus made available to other participants. Many well-known applications are intended to contribute to road safety by providing warning messages about braking, ice, accidents, etc., to inform affected road users about possible hazards. However, there is the problem that these systems can be misused by maliciously injecting false information. Without adequate safety, the system is useless to the driver.
Eine mögliche Lösung hierfür sieht vor, dass die Nachrichten signiert werden, um die mit diesen Nachrichten übermittelten Informationen zu verifizieren. Die zugrundeliegenden kryptographischen Verfahren können aber nicht für die gesamte Lebensdauer einesOne possible solution to this is to sign the messages to verify the information provided with these messages. The underlying cryptographic methods can not be used for the entire life of a
Fahrzeugs als sicher angesehen werden. Zudem sind diese Verfahren hinsichtlich der benötigten Rechenleistung aufwendig.Vehicle can be considered safe. In addition, these methods are complicated in terms of the required computing power.
Offenbarung der ErfindungDisclosure of the invention
Das erfindungsgemäße Verfahren dient zur Verifikation von zwischen Fahrzeugen ausgetauschten Informationen, wobei anhand empfangener Signale, die die Informationen tragen, zumindest eine mindestens eines der Fahrzeuge betreffende Größe, insbesondere eine kinematische Größe, bestimmt wird und auf Grundlage dieser Bestimmung dieThe method according to the invention serves to verify information exchanged between vehicles, wherein based on received signals carrying the information, at least one variable relating to at least one of the vehicles, in particular a kinematic variable, is determined and based on this determination
Informationen behandelt werden. Somit ist es möglich, falsche Informationen zu identifizieren und entsprechend zu behandeln, das bedeutet diese zu verwerfen. Nur Informationen, die als korrekt erkannt wurden, werden in dem empfangenden Fahrzeug als solche behandelt und damit berücksichtigt.Information to be treated. Thus, it is possible to identify and treat incorrect information, which means discarding it. Only information that has been identified as correct is treated as such in the receiving vehicle and thus taken into account.
Somit können verifizierte Informationen zum Nutzen des in die Kommunikation eingebundenen Verkehrsteilnehmers und damit zur Steigerung der Fahrsicherheit genutzt werden. Falsche Informationen werden als solche erkannt und verworfen.Thus, verified information can be used for the benefit of the road user involved in the communication and thus for increasing driving safety. Incorrect information is recognized as such and discarded.
Es kann bspw. unter anderem eine Geschwindigkeit des Fahrzeugs bestimmt werden.It may, for example, among other things, a speed of the vehicle are determined.
In Ausgestaltung wird eine Frequenzsynchronisation verwendet, um eine Dopplerverschiebung zwischen den Fahrzeugen zu messen. Aus den Doppelverschiebungen lassen sich die Relativgeschwindigkeiten der Fahrzeuge berechnen, die gesendet haben. Zusammen mit der eigenen Geschwindigkeit lässt sich zumindest auf Autobahnen und Landstraßen die Absolutgeschwindigkeit der anderen Fahrzeuge angeben. Die Geschwindigkeit Null läßt sich in jedem Fall erkennen. Es können nun Datenpakete verworfen werden, wenn das sendende Fahrzeug sich der Information nach bewegen müsste, es aber tatsächlich die Geschwindigkeit Null hat, wenn bspw. ein Bremsvorgang signalisiert wird, oder das sendende Fahrzeug in den Daten eine andere Eigengeschwindigkeit mitteilt, als es die Messung ergibt.In an embodiment, frequency synchronization is used to measure a Doppler shift between the vehicles. From the double displacements can be the relative speeds of the vehicles calculate that have sent. Together with their own speed, the absolute speed of the other vehicles can be specified, at least on highways and country roads. The speed zero can be detected in any case. It can now be discarded data packets if the sending vehicle would have to move the information, but it actually has the speed zero, if, for example, a braking operation is signaled or the sending vehicle in the data a different airspeed tells than the measurement results.
Zusätzlich zu der Frequenzsynchronisation können Methoden aus der Signalverarbeitung verwendet werden, die die verbleibende Frequenzabweichung des empfangenen Signals bestimmen.In addition to frequency synchronization, signal processing techniques can be used to determine the remaining frequency deviation of the received signal.
Alternativ oder ergänzend zur Bestimmung der Geschwindigkeit kann die Position des Fahrzeugs bestimmt werden. In diesem Fall kann neben der Dopplerverschiebung die empfangene Signalleistung für jeden Kommunikationspartner gemessen werden, um dieAlternatively or in addition to determining the speed, the position of the vehicle can be determined. In this case, in addition to the Doppler shift, the received signal power for each communication partner can be measured to obtain the
Position des Fahrzeugs zu betimmen. Unter Berücksichtigung der Abhängigkeit der Signalleistung von der Entfernung zum Sender kann dann die Entfernung des Kommunikationspartners geschätzt werden. Dabei ist es möglich, dass das Signal aufgrund von Mehrwegeausbreitung und Abschattung schwächer empfangen wird als im ungestörten Fall, es kann aber nicht stärker empfangen werden. Folglich könnenPosition of the vehicle. Taking into account the dependence of the signal power on the distance to the transmitter, the distance of the communication partner can then be estimated. It is possible that the signal is received weaker due to multipath propagation and shading than in the undisturbed case, but it can not be received more strongly. Consequently, you can
Informationen bzw. Datenpakete verworfen werden, wenn sie stärker empfangen werden als es die signalisierte Position des sendenden Fahrzeugs und die eigene Position zulassen oder wenn Signale empfangen werden, obwohl das sendende Fahrzeug eine Position signalisiert, die außerhalb der Reichweite des Funksystems liegt.Information or data packets are discarded if they are received more than the signaled position of the transmitting vehicle and the own position allow or if signals are received, although the sending vehicle signals a position that is out of range of the radio system.
In Ausgestaltung können zur Verifikation der ausgetauschten Informationen zusätzlich Informationen verwendet werden, die aus zwei oder mehreren aufeinanderfolgenden Nachrichten hervorgehen. Dabei werden Nachrichten bspw. dann demselben Sender zugeordnet, wenn sie eine Kennung des Senders enthalten oder in einem Zeitintervall übertragen werden, das für den Sender reserviert ist.In an embodiment, information that results from two or more consecutive messages can additionally be used to verify the exchanged information. In this case, messages are, for example, then assigned to the same sender if they contain an identifier of the sender or are transmitted in a time interval reserved for the sender.
Aufeinanderfolgende Datenpakete eines Kommunikationspartners können verworfen werden, wenn die signalisierten Geschwindigkeiten und/oder Positionen in der zeitlichen Abfolge nicht zueinander passen. - A -Successive data packets of a communication partner can be discarded if the signaled speeds and / or positions in the time sequence do not match. - A -
Weiterhin können zur Überprüfung der empfangenen Informationen zusätzlich Umfeld erfassende Systeme, wie bspw. Radar, Video usw., eingesetzt werden, die andere Fahrzeuge erkennen und deren Position und/oder Geschwindigkeit schätzen können.Furthermore, in order to check the received information additionally environment-capturing systems, such as. Radar, video, etc., are used, recognize the other vehicles and can estimate their position and / or speed.
Die vorstehend erläuterten Methoden und Vorgehensweisen können beliebig kombiniert werden, wobei diese im Bedarfsfall alternativ oder auch einander ergänzend eingesetzt werden können.The methods and procedures explained above can be combined as desired, and these can be used alternatively or as a supplement if required.
Die Erfindung betrifft weiterhin eine elektronische Einheit zur Verifikation von zwischenThe invention further relates to an electronic unit for verification of between
Fahrzeugen ausgetauschten Informationen, mit einer Recheneinrichtung, die dazu ausgelegt ist, ein vorstehend beschriebenes Verfahren durchzuführen.Information exchanged with vehicles, with a computing device which is designed to perform a method described above.
Diese elektronische Einheit weist typischerweise eine Sendeeinrichtung zum Senden von Informationen und zusätzlich eine Empfangseinrichtung zum Empfangen vonThis electronic unit typically has a transmitting device for transmitting information and additionally a receiving device for receiving
Informationen auf und ist zum Einbau in ein Fahrzeug vorgesehen.Information on and is intended for installation in a vehicle.
Das erfindungsgemäße Computerprogramm mit Programmcodemitteln ist zum Durchführen aller Schritte des beschriebenen Verfahrens geeignet, wenn das Computerprogramm auf einem Computer oder einer entsprechenden Recheneinrichtung, insbesondere einer Recheneinrichtung der vorstehend beschriebenen Art, ausgeführt wird.The computer program with program code means according to the invention is suitable for carrying out all the steps of the described method when the computer program is executed on a computer or a corresponding computing device, in particular a computing device of the type described above.
Das vorgestellte Computerprogrammprodukt umfasst Programmcodemittel, die auf einem computerlesbaren Datenträger gespeichert sind, um alle Schritte eines voranstehend beschriebenen Verfahrens durchzuführen, wenn das Computerprogramm auf einemThe presented computer program product comprises program code means which are stored on a computer-readable data carrier to perform all the steps of a method described above, when the computer program is stored on a computer
Computer oder einer entsprechenden Recheneinrichtung, wie bspw. einer Recheneinrichtung in einer beschriebenen elektronischen Einheit, ausgeführt wird.Computer or a corresponding computing device, such as, for example, a computing device in a described electronic unit is executed.
Weitere Vorteile und Ausgestaltungen der Erfindung ergeben sich aus der Beschreibung und der beiliegenden Zeichnung.Further advantages and embodiments of the invention will become apparent from the description and the accompanying drawings.
Es versteht sich, dass die voranstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It is understood that the features mentioned above and those yet to be explained not only in the combination specified, but also in other combinations or in isolation, without departing from the scope of the present invention.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Figur 1 zeigt in schematischer Darstellung eine Ausführungsform der erfindungsgemäßen elektronischen Einheit.Figure 1 shows a schematic representation of an embodiment of the electronic unit according to the invention.
Figur 2 verdeutlicht eine Ausführung des erfindungsgemäßen Verfahrens.Figure 2 illustrates an embodiment of the method according to the invention.
Die Erfindung ist anhand von Ausführungsbeispielen in den Zeichnungen schematisch dargestellt und wird im folgenden unter Bezugnahme auf die Zeichnungen ausführlich beschrieben.The invention is illustrated schematically by means of embodiments in the drawings and will be described in detail below with reference to the drawings.
Ausführungsformen der ErfindungEmbodiments of the invention
Figur 1 zeigt eine Ausführungsform der erfindungsgemäßen elektronischen Einheit, die insgesamt mit der Bezugsziffer 10 bezeichnet ist. Die elektronische Einheit umfasst eineFigure 1 shows an embodiment of the electronic unit according to the invention, which is generally designated by the reference numeral 10. The electronic unit includes a
Recheneinrichtung 12, eine Empfangseinrichtung 14 und eine Sendeeinrichtung 16. Die Komponenten 12, 14 und 16 sind über Datenleitungen 18 miteinander verbunden.Computing device 12, a receiving device 14 and a transmitting device 16. The components 12, 14 and 16 are connected to each other via data lines 18.
Die dargestellte elektronische Einheit 10 ist dazu ausgelegt, eine Kommunikation zwischen einem Fahrzeug, in dem die Einheit 10 vorgesehen ist, und weiterenThe illustrated electronic unit 10 is configured to communicate between a vehicle in which the unit 10 is provided and others
Fahrzeugen zum Austausch von Nachrichten bzw. Informationen zu ermöglichen. Hierzu dient insbesondere die Empfangseinrichtung 14 und die Sendeeinrichtung 16. Eine Verifikation der übermittelten Nachrichten erfolgt in der Recheneinrichtung 12, wobei anhand der die Nachrichten übermittelnden Signale eine Geschwindigkeit mindestens eines der an der Kommunikation beteiligten Fahrzeuge bestimmt wird und auf Grundlage dieser Bestimmung die Nachrichten behandelt werden, d.h. verworfen oder berücksichtigt werden. In Figur 2 ist eine Ausführungsform der erfindungsgemäßen Verfahrens verdeutlicht, wobei in diesem Fall die Frequenzsynchronisation des verwendeten Funksystems eingesetzt wird, um die Dopplerverschiebung zwischen dem eigenen und anderen Fahrzeugen zu messen. In dem dargestellten Graphen ist auf der Ordinate 20 die Frequenz über der Zeit (Abszisse 22) aufgetragen.Allow vehicles to exchange messages or information. A verification of the transmitted messages takes place in the computing device 12, wherein based on the signals transmitting the messages, a speed of at least one of the vehicles involved in the communication is determined and based on this determination the messages are treated , ie discarded or taken into account. FIG. 2 illustrates an embodiment of the method according to the invention, in which case the frequency synchronization of the radio system used is used to measure the Doppler shift between one's own vehicle and another vehicle. In the illustrated graph, the ordinate 20 plots the frequency versus time (abscissa 22).
In der Darstellung sind erste Informationen bzw. eine erste Nachricht 24, eine zweite Nachricht 26 und eine dritte Nachricht 28 dargestellt, die von unterschiedlichen Teilnehmern bei den Frequenzen fl 30, f2 32 und f3 34 empfangen werden. Das Funksystem wird bei der Frequenz f 36 betrieben. Aus den Dopplerverschiebungen (fl - f), (f2 - f) und (f3 — f) lassen sich die Relativgeschwindigkeiten der Fahrzeuge berechnen, die die Nachrichten 24, 26 und 28 gesendet haben.In the illustration, first information or a first message 24, a second message 26 and a third message 28 are shown, which are received by different subscribers at the frequencies fl 30, f2 32 and f3 34. The radio system is operated at the frequency f 36. From the Doppler shifts (fl - f), (f2 - f) and (f3 - f), the relative speeds of the vehicles that sent the messages 24, 26 and 28 can be calculated.
Zusammen mit der eigenen Geschwindigkeit lässt sich zumindest auf Autobahnen und Landstraßen die absolute Geschwindigkeit der anderen Fahrzeuge angeben. DieTogether with its own speed, the absolute speed of other vehicles can be specified, at least on motorways and highways. The
Geschwindigkeit Null lässt sich in jedem Fall erkennen. Es können nun Datenpakete verworfen werden, wenn das sendende Fahrzeug sich der übermittelten Nachricht 24, 26 oder 28 nach bewegen müsste, es aber tatsächlich die Geschwindigkeit Null hat, wenn bspw. ein Bremsvorgang signalisiert wird, oder das sendende Fahrzeug in der Nachricht 24, 26 oder 28 eine andere Eigengeschwindigkeit mitteilt als bestimmt wird.Speed zero can be detected in any case. It is now possible to discard data packets if the transmitting vehicle would have to move according to the transmitted message 24, 26 or 28, but it actually has the speed zero if, for example, a braking process is signaled or the transmitting vehicle in the message 24, 26 or 28 indicates a different airspeed than is determined.
Das erläuterte Verfahren, bei dem die Frequenzsynchronisation des verwendeten Funksystems eingesetzt wird, um die Dopplerverschiebung zu messen, kann mit anderen Methoden und Vorgehensweisen kombiniert werden, wie diese vorstehend erläutert sind. Dabei können die unterschiedlichen Vorgehensweisen auch redundant eingesetzt werden, um eine höhere Sicherheit zu erzielen und um ggf. Ergebnisse der einzelnen Vorgehensweisen miteinander vergleichen zu können. The described method, in which the frequency synchronization of the radio system used is used to measure the Doppler shift, can be combined with other methods and procedures, as explained above. The different approaches can also be used redundantly in order to achieve greater security and, if necessary, to be able to compare the results of the individual procedures with each other.

Claims

Ansprüche claims
1. Verfahren zur Verifikation von zwischen Fahrzeugen ausgetauschten Informationen (24, 26, 28), bei dem anhand empfangener Signale, die die Informationen (24, 26, 28) tragen, zumindest eine mindestens eines der Fahrzeuge betreffende Größe bestimmt wird und auf Grundlage dieser Bestimmung dieA method of verifying information exchanged between vehicles (24, 26, 28) in which, based on received signals carrying the information (24, 26, 28), at least one size of at least one of the vehicles is determined and based thereon Determine the
Informationen (24, 26, 28) behandelt werden.Information (24, 26, 28) will be treated.
2. Verfahren nach Anspruch 1, bei dem die Geschwindigkeit des Fahrzeugs bestimmt wird.2. The method of claim 1, wherein the speed of the vehicle is determined.
3. Verfahren nach Anspruch 1, bei dem eine Frequenzsynchronisation verwendet wird, um eine Dopplerverschiebung zwischen den Fahrzeugen zu messen.3. The method of claim 1, wherein frequency synchronization is used to measure a Doppler shift between the vehicles.
4. Verfahren nach einem der Ansprüche 1 bis 3, bei dem zusätzlich Methoden aus der Signalverarbeitung verwendet werden.4. The method according to any one of claims 1 to 3, are additionally used in the methods of signal processing.
5. Verfahren nach einem der Ansprüche 1 bis 4, bei dem eine Position des Fahrzeugs bestimmt wird.5. The method according to any one of claims 1 to 4, wherein a position of the vehicle is determined.
6. Verfahren nach Anspruch 5, bei dem eine empfangene Signalleistung zur6. The method of claim 5, wherein a received signal power to
Bestimmung der Position gemessen wird.Determination of the position is measured.
7. Verfahren nach einem der Ansprüche 1 bis 6, bei dem Inhalte der Informationen (24, 26, 28) selbst zur Verifikation herangezogen werden.7. The method according to any one of claims 1 to 6, wherein the contents of the information (24, 26, 28) themselves are used for verification.
8. Verfahren nach einem der Ansprüche 1 bis 7, bei dem zusätzlich umfelderfassende Systeme eingesetzt werden. 8. The method according to any one of claims 1 to 7, wherein in addition umfelderfassende systems are used.
9. Verfahren nach einem der Ansprüche 1 bis 8, bei dem Informationen (24, 26, 28), die im Widerspruch zu der Bestimmung der Geschwindigkeit stehen, verworfen werden.A method according to any one of claims 1 to 8, wherein information (24, 26, 28) which is in contradiction to the determination of the speed is discarded.
10. Verfahren nach einem der Ansprüche 1 bis 9, bei dem Informationen (24, 26, 28), die im Widerspruch zu der Bestimmung der Position stehen, verworfen werden.10. The method according to any one of claims 1 to 9, wherein the information (24, 26, 28), which are in conflict with the determination of the position, are discarded.
11. Elektronische Einheit zur Verifikation von zwischen Fahrzeugen ausgetauschten Informationen (24, 26, 28), mit einer Recheneinrichtung (12), die dazu ausgelegt ist, ein Verfahren nach einem der Ansprüche 1 bis 10 auszuführen.An electronic unit for verifying information exchanged between vehicles (24, 26, 28), comprising a computing device (12) adapted to carry out a method according to any one of claims 1 to 10.
12. Elektronische Einheit nach Anspruch 11, die zusätzlich eine Sendeeinrichtung (16) zum Senden von Informationen (24, 26, 28) tragenden Signalen aufweist.12. An electronic unit according to claim 11, further comprising a transmitting means (16) for transmitting information (24, 26, 28) carrying signals.
13. Elektronische Einheit nach Anspruch 11 oder 12, die zusätzlich eine13. Electronic unit according to claim 11 or 12, which additionally has a
Empfangseinrichtung (14) zum Empfangen von Informationen (24, 26, 28) tragenden Signalen aufweist.Receiving device (14) for receiving information (24, 26, 28) carrying signals.
14. Computerprogramm mit Programmcodemitteln, um alle Schritte eines Verfahrens nach einem der Ansprüche 1 bis 10 durchzuführen, wenn das Computerprogramm auf einem Computer oder einer entsprechenden Recheneinrichtung (12), insbesondere in einer Recheneinrichtung (1) nach einem der Ansprüche 11 bis 13, ausgeführt wird.14. Computer program with program code means to perform all steps of a method according to one of claims 1 to 10, when the computer program on a computer or a corresponding computing device (12), in particular in a computing device (1) according to one of claims 11 to 13, executed becomes.
15. Computerprogrammprodukt mit Programmcodemitteln, die auf einem computerlesbaren Datenträger gespeichert sind, um alle Schritte eines Verfahrens nach einem der Ansprüche 1 bis 10 durchzuführen, wenn das Computerprogramm auf einem Computer oder einer entsprechenden Recheneinrichtung (12), insbesondere in einer Recheneinrichtung (12) nach einem der Ansprüche 11 bis 13, ausgeführt wird. 15. Computer program product with program code means which are stored on a computer-readable medium to perform all the steps of a method according to one of claims 1 to 10, when the computer program on a computer or a corresponding computing device (12), in particular in a computing device (12) one of claims 11 to 13, is executed.
EP07787572.2A 2006-09-06 2007-07-16 Method for verifying information Not-in-force EP2064688B1 (en)

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DE200610041668 DE102006041668A1 (en) 2006-09-06 2006-09-06 Method for verifying information
PCT/EP2007/057304 WO2008028718A1 (en) 2006-09-06 2007-07-16 Method for verifying information

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JP (1) JP5086351B2 (en)
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JP4962207B2 (en) * 2007-08-10 2012-06-27 住友電気工業株式会社 Communication system, roadside communication apparatus, optical beacon, and wireless communication method
US8645053B2 (en) * 2008-07-16 2014-02-04 Autotalks Ltd. Relative vehicular positioning using vehicular communications
GB201211618D0 (en) * 2012-06-29 2012-08-15 Tomtom Dev Germany Gmbh Methods of providing traffic flow messages

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JP2002164834A (en) * 2000-11-24 2002-06-07 Ntt Docomo Inc False positional information detecting apparatus and method and mobile communication system equipped with transmission and reception function of positional information
EP1223567A1 (en) 2001-01-11 2002-07-17 Siemens Aktiengesellschaft A method for inter-vehicle communication of individualized vehicle data
US6791471B2 (en) 2002-10-01 2004-09-14 Electric Data Systems Communicating position information between vehicles
JP3922173B2 (en) 2002-12-18 2007-05-30 トヨタ自動車株式会社 Driving assistance system and device
GB0318480D0 (en) 2003-08-07 2003-09-10 Koninkl Philips Electronics Nv Method of and system for assessing the nature of movement of articles along a path of movement

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WO2008028718A1 (en) 2008-03-13
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DE102006041668A1 (en) 2008-03-27
EP2064688B1 (en) 2015-09-09

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