EP2381731A1 - Beacon for a street toll system - Google Patents

Beacon for a street toll system Download PDF

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Publication number
EP2381731A1
EP2381731A1 EP10450066A EP10450066A EP2381731A1 EP 2381731 A1 EP2381731 A1 EP 2381731A1 EP 10450066 A EP10450066 A EP 10450066A EP 10450066 A EP10450066 A EP 10450066A EP 2381731 A1 EP2381731 A1 EP 2381731A1
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EP
European Patent Office
Prior art keywords
transceiver
directional
beacon
antenna
radio communication
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
EP10450066A
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German (de)
French (fr)
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EP2381731B1 (en
Inventor
Jasja Tijink
Robert Povolny
Gerald Zottl
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Kapsch TrafficCom AG
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Kapsch TrafficCom AG
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Publication date
Priority to ES10450066T priority Critical patent/ES2385209T3/en
Priority to PT10450066T priority patent/PT2381731E/en
Priority to PL10450066T priority patent/PL2381731T3/en
Priority to SI201030036T priority patent/SI2381731T1/en
Priority to AT10450066T priority patent/ATE551872T1/en
Priority to EP10450066A priority patent/EP2381731B1/en
Application filed by Kapsch TrafficCom AG filed Critical Kapsch TrafficCom AG
Priority to DK10450066.5T priority patent/DK2381731T3/en
Priority to US13/088,971 priority patent/US8830087B2/en
Priority to CA2737837A priority patent/CA2737837C/en
Publication of EP2381731A1 publication Critical patent/EP2381731A1/en
Application granted granted Critical
Publication of EP2381731B1 publication Critical patent/EP2381731B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
    • G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
    • G07B15/06—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
    • G07B15/063—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems using wireless information transmission between the vehicle and a fixed station

Definitions

  • the present invention relates to a beacon having a transceiver for radio communication with vehicle OBUs of a road toll system, the transceiver having a directional antenna and being adapted to radio communicate with OBUs on a selected channel via the directional antenna.
  • Radio beacons with directional antennas are used in order to be able to radiate high power on the one hand and to be able to locate the location of an OBU (onboard unit) on the coverage area of the directional antenna on the other hand.
  • OBU onboard unit
  • the use of a directional antenna poses the problem that other transceivers active on the same channel are poorly heard outside the radio field of the directional antenna, which may result in disruption of the radio communication between the beacon and the OBU, which may be " Hidden Node "problem is known.
  • a beacon of the aforementioned type which is characterized according to the invention in that the transceiver is additionally equipped with an omnidirectional antenna and adapted to transmit and / or to a channel reservation message before the start of a directed radio communication by means of the omnidirectional antenna Check if the selected channel is free.
  • the invention provides a new type of radio beacon for a road toll system, which has both a directional antenna to operate in a limited area of high power density and with Localization function to be able to handle toll transactions with OBUs, as well as an omnidirectional antenna for the implementation of a CSMA / CA or RTS / CTS-CSMA / CA functionality to a disturbance of the directional communication by "hidden nodes" largely excluded.
  • the transceiver is adapted to first check whether the selected channel is idle, and then to transmit the channel reservation message, resulting in a particularly high susceptibility to interference.
  • Directed radio communication preferably takes place according to the DSRC (Dedicated Short Range Communication) or WAVE (Wireless Access in a Vehicle Environment) standard.
  • DSRC Dedicated Short Range Communication
  • WAVE Wireless Access in a Vehicle Environment
  • the beacon has a carrier mounted over the road, on which the directional antenna and the omnidirectional antenna are mounted.
  • Fig. 1 1 shows in detail a road 1 on which vehicles 2 move with OBUs 3, which can radio-communicate with roadside beacons 4 of a road tolling system (not shown).
  • the exemplified beacon 4 comprises a transceiver 5, which is on the one hand via a data line 6 with a (not shown) headquarters of the road toll system in communication and on the other hand via a directional antenna 7 with an OBU 3 in the radio coverage area (radio field) 8 of the antenna 7 can communicate ,
  • the radio communication between the transceiver 5 or its directional antenna 7 and the OBU 3 is preferably carried out according to the DSRC or WAVE standard in a manner known to those skilled in the art.
  • the directional antenna 7 is mounted for example on a support 9 directly above the road 1 and can supply the radio field 8 due to their directional characteristics with high power; Due to the directional characteristic, an OBU 3 Moreover, be localized on or in the area of the radio field 8.
  • the transceiver part of the OBU 3 usually also has directional characteristics, for example, directed forward and upward through the windshield of the vehicle 2 to perform a directional radio communication high power density with the antenna 7 can.
  • Denoted at 10 is another transceiver device located near the beacon 4 with a e.g. omnidirectional transceiver area 11, for example a WLAN or WAVE client or node. If the transceiver 10 uses the same radio channel as the beacon 4 and / or the OBU 3, in certain local and temporal constellations, the transceiver 11 could interfere with the radio communication of the beacon 4 with the OBU 3 without, for example, the beacon 4 or the OBU 3 can detect ("hidden node" problem).
  • the transceiver 5 of the beacon 4 is provided with an additional omnidirectional antenna 12 whose radio coverage area (radio field) is exemplified at 13 and includes both the OBU 3 and the transceiver 10.
  • the omnidirectional antenna 12 may be e.g. be mounted on the same support 9 above the road 1 as the antenna. 7
  • the transceiver 5 can now carry out listen-before-talk functionality (LBT) in accordance with the CSMA / CA method, ie before starting a directed radio communication via the antenna 7 with the OBU 3 into the channel selected for this purpose. " listen in omnidirectionally "to check if the channel is free.
  • the transceiver 5 can perform an RTS / CTS functionality via the omnidirectional antenna 12 in accordance with the RTS / CTS-CSMA / CA method, ie omnidirectionally a channel reservation message ("Request to Send") RTS in the direction for the radio communication the OBU 3 will broadcast selected channel.
  • the OBU 3 may respond with a "clear to send" CTS, and other transceivers such as the transceiver 10 may listen to one or both of the RTS, CTS messages, and during distance the estimated transmission time from own transmissions as known to those skilled in the art.
  • the LBT and RTS functionalities may also be performed sequentially, i. the transceiver 5 checks in a first step whether the selected channel is idle (LBT) and in a second step it then transmits the channel reservation message RTS.
  • either all radio communication of the transceiver 5 with the OBU 3 can be handled via the directional antenna 7 or the transceiver 5 transmits over the omnidirectional antenna 12 and receives the directional antenna 7.
  • omnidirectional means any omnidirectional characteristic which does not necessarily have to be a circular or spherical omnidirectional characteristic.
  • directional in the present specification is meant a directional beam characteristic which is not necessarily unidirectional, i. has only a single spreading lobe, but could also have several spreading lobes, e.g. Main and side lobes, fore and aft lobes etc.

Abstract

The beacon (4) has a transceiver (5) for communication with vehicle on-board units of a road tolling system. The transceiver is additionally equipped and designed with an omni-directional antenna (12). A channel reservation message is transmitted before the beginning of a directional wireless communication. The directional wireless communication is realized according to Dedicated short range communication (DSRC)standard or Wireless access in a vehicle environment (WAVE)standard.

Description

Die vorliegende Erfindung betrifft eine Bake mit einem Sendeempfänger zur Funkkommunikation mit Fahrzeug-OBUs eines Straßenmautsystems, wobei der Sendeempfänger eine direktionale Antenne aufweist und dafür eingerichtet ist, mit OBUs auf einem ausgewählten Kanal über die direktionale Antenne gerichtet zu funkkommunizieren.The present invention relates to a beacon having a transceiver for radio communication with vehicle OBUs of a road toll system, the transceiver having a directional antenna and being adapted to radio communicate with OBUs on a selected channel via the directional antenna.

Funkbaken mit direktionalen Antennen, sog. Richtbaken, werden verwendet, um einerseits eine hohe Leistung abstrahlen zu können und anderseits den Ort einer OBU (Onboard-Unit) auf den Abdeckungsbereich der direktionalen Antenne lokalisieren zu können. Die Verwendung einer direktionalen Antenne führt jedoch zu dem Problem, daß andere auf demselben Kanal aktive Sendeempfangsgeräte außerhalb des Funkfeldes der direktionalen Antenne schlecht bzw. gar nicht gehört werden, was zu einer Störung der Funkkommunikation zwischen der Bake und der OBU führen kann, die als "Hidden Node"-Problematik bekannt ist.Radio beacons with directional antennas, so-called directional beacons, are used in order to be able to radiate high power on the one hand and to be able to locate the location of an OBU (onboard unit) on the coverage area of the directional antenna on the other hand. The use of a directional antenna, however, poses the problem that other transceivers active on the same channel are poorly heard outside the radio field of the directional antenna, which may result in disruption of the radio communication between the beacon and the OBU, which may be " Hidden Node "problem is known.

Zur Lösung des "Hidden Node"-Problems sind verschiedene Verfahren bekannt, wie das CSMA/CA-Verfahren ("Carrier Sense Multiple Access/Collision Avoidance") mit dem Prinzip "Listen before Talk" (LBT), sowie dessen RTS/CTS-Erweiterung mit dem Austausch einer Kanalreservierungsnachricht ("Request to Send", RTS) und einer Reservierungsbestätigungsnachricht ("Clear to Send", CTS). Die Erfindung setzt sich zum Ziel, Lösungen zu schaffen, um diese bekannten Mechanismen für Straßenmautsysteme mit Richtbaken einsetzbar zu machen.To solve the "hidden node" problem, various methods are known, such as the CSMA / CA method ("Carrier Sense Multiple Access / Collision Avoidance") with the principle "Listen Before Talk" (LBT), and its RTS / CTS Extension with the exchange of a "Channel Request" message ("RTS") and a "Clear to Send" (CTS) message. The invention has for its object to provide solutions to make these known mechanisms for road toll systems can be used with straightening beacons.

Dieses Ziel wird mit einer Bake der einleitend genannten Art erreicht, die sich gemäß der Erfindung dadurch auszeichnet, daß der Sendeempfänger zusätzlich mit einer omnidirektionalen Antenne ausgestattet und dafür ausgebildet ist, vor Beginn einer gerichteten Funkkommunikation mittels der omnidirektionalen Antenne eine Kanalreservierungsnachricht auszusenden und/oder zu überprüfen, ob der ausgewählte Kanal frei ist.This object is achieved with a beacon of the aforementioned type, which is characterized according to the invention in that the transceiver is additionally equipped with an omnidirectional antenna and adapted to transmit and / or to a channel reservation message before the start of a directed radio communication by means of the omnidirectional antenna Check if the selected channel is free.

Die Erfindung schafft eine neue Art von Funkbake für ein Straßenmautsystem, die sowohl eine gerichtete Antenne aufweist, um in einem begrenzten Gebiet mit hoher Leistungsdichte und mit Lokalisierungsfunktion Mauttransaktionen mit OBUs abwickeln zu können, als auch eine omnidirektionale Antenne für die Implementierung einer CSMA/CA- bzw. RTS/CTS-CSMA/CA-Funktionalität, um eine Störung der Richtkommunikation durch "Hidden Nodes" weitgehend auszuschließen.The invention provides a new type of radio beacon for a road toll system, which has both a directional antenna to operate in a limited area of high power density and with Localization function to be able to handle toll transactions with OBUs, as well as an omnidirectional antenna for the implementation of a CSMA / CA or RTS / CTS-CSMA / CA functionality to a disturbance of the directional communication by "hidden nodes" largely excluded.

Gemäß einer bevorzugten Ausführungsform der Erfindung ist der Sendeempfänger dafür ausgebildet, zuerst zu überprüfen, ob der ausgewählte Kanal frei ist, und dann die Kanalreservierungsnachricht auszusenden, was eine besonders hohe Störungsunanfälligkeit ergibt.According to a preferred embodiment of the invention, the transceiver is adapted to first check whether the selected channel is idle, and then to transmit the channel reservation message, resulting in a particularly high susceptibility to interference.

Bevorzugt erfolgt die gerichtete Funkkommunikation nach dem DSRC- (Dedicated Short Range Communication) oder WAVE- (Wireless Access in a Vehicle Environment) -Standard.Directed radio communication preferably takes place according to the DSRC (Dedicated Short Range Communication) or WAVE (Wireless Access in a Vehicle Environment) standard.

Besonders günstig ist es, wenn die Bake einen über der Straße montierten Träger aufweist, an welchem die direktionale Antenne und die omnidirektionale Antenne montiert sind.It is particularly favorable if the beacon has a carrier mounted over the road, on which the directional antenna and the omnidirectional antenna are mounted.

Die Erfindung wird nachstehend anhand eines bevorzugten Ausführungsbeispiels unter Bezugnahme auf die begleitende Zeichnung näher erläutert, deren einzige Fig. 1 einen Ausschnitt eines Straßenmautsystems mit einer Bake der Erfindung in einer blockschaltbildlichen Draufsicht wiedergibt.The invention will be explained below with reference to a preferred embodiment with reference to the accompanying drawings, whose only Fig. 1 a section of a road toll system with a beacon of the invention in a block diagram top view reproduces.

Fig. 1 zeigt ausschnittsweise eine Straße 1, auf der sich Fahrzeuge 2 mit OBUs 3 bewegen, die mit straßenseitigen Baken 4 eines (nicht weiter dargestellten) Straßenmautsystems funkkommunizieren können. Die beispielhaft dargestellte Bake 4 umfaßt einen Sendeempfänger 5, der einerseits über eine Datenleitung 6 mit einer (nicht dargestellten) Zentrale des Straßenmautsystems in Verbindung steht und anderseits über eine direktionale Antenne 7 mit einer OBU 3 im Funkabdeckungsbereich (Funkfeld) 8 der Antenne 7 kommunizieren kann. Die Funkkommunikation zwischen dem Sendeempfäger 5 bzw. seiner direktionalen Antenne 7 und der OBU 3 erfolgt bevorzugt nach dem DSRC- oder WAVE-Standard in einer dem Fachmann bekannten Art und Weise. Fig. 1 1 shows in detail a road 1 on which vehicles 2 move with OBUs 3, which can radio-communicate with roadside beacons 4 of a road tolling system (not shown). The exemplified beacon 4 comprises a transceiver 5, which is on the one hand via a data line 6 with a (not shown) headquarters of the road toll system in communication and on the other hand via a directional antenna 7 with an OBU 3 in the radio coverage area (radio field) 8 of the antenna 7 can communicate , The radio communication between the transceiver 5 or its directional antenna 7 and the OBU 3 is preferably carried out according to the DSRC or WAVE standard in a manner known to those skilled in the art.

Die direktionale Antenne 7 ist beispielsweise an einem Träger 9 direkt über der Straße 1 montiert und kann aufgrund ihrer Richtcharakteristik mit hoher Leistung das Funkfeld 8 versorgen; aufgrund der Richtcharakteristik kann eine OBU 3 überdies auf den oder im Bereich des Funkfelds 8 lokalisiert werden.The directional antenna 7 is mounted for example on a support 9 directly above the road 1 and can supply the radio field 8 due to their directional characteristics with high power; Due to the directional characteristic, an OBU 3 Moreover, be localized on or in the area of the radio field 8.

Der Sendeempfangsteil der OBU 3 besitzt üblicherweise ebenfalls Richtcharakteristik, beispielsweise nach vorne und oben durch die Windschutzscheibe des Fahrzeugs 2 gerichtet, um eine Richtfunkkommunikation hoher Leistungsdichte mit der Antenne 7 durchführen zu können.The transceiver part of the OBU 3 usually also has directional characteristics, for example, directed forward and upward through the windshield of the vehicle 2 to perform a directional radio communication high power density with the antenna 7 can.

Mit 10 ist ein sich in der Nähe der Bake 4 aufhaltendes anderes Sendeempfangsgerät mit einem z.B. omnidirektionalen Sendeempfangsbereich 11 bezeichnet, beispielsweise ein WLAN-oder WAVE-Client bzw. -Node. Wenn der Sendeempfänger 10 denselben Funkkanal verwendet wie die Bake 4 und/oder die OBU 3, könnte in bestimmten örtlichen und zeitlichen Konstellationen der Sendeempfänger 11 die Funkkommunikation der Bake 4 mit der OBU 3 stören, ohne daß dies beispielsweise die Bake 4 oder die OBU 3 erkennen kann ("Hidden Node"-Problem).Denoted at 10 is another transceiver device located near the beacon 4 with a e.g. omnidirectional transceiver area 11, for example a WLAN or WAVE client or node. If the transceiver 10 uses the same radio channel as the beacon 4 and / or the OBU 3, in certain local and temporal constellations, the transceiver 11 could interfere with the radio communication of the beacon 4 with the OBU 3 without, for example, the beacon 4 or the OBU 3 can detect ("hidden node" problem).

Um dies zu verhindern, ist der Sendeempfänger 5 der Bake 4 mit einer zusätzlichen omnidirektionalen Antenne 12 ausgestattet, deren Funkabdeckungsbereich (Funkfeld) mit 13 beispielhaft skizziert ist und sowohl die OBU 3 als auch den Sendeempfänger 10 umfaßt. Die omnidirektionale Antenne 12 kann z.B. an demselben Träger 9 über der Straße 1 montiert werden wie die Antenne 7.To prevent this, the transceiver 5 of the beacon 4 is provided with an additional omnidirectional antenna 12 whose radio coverage area (radio field) is exemplified at 13 and includes both the OBU 3 and the transceiver 10. The omnidirectional antenna 12 may be e.g. be mounted on the same support 9 above the road 1 as the antenna. 7

Über die omnidirektionale Antenne 12 kann der Sendeempfänger 5 nun eine Listen-before-Talk-Funktionalität (LBT) entsprechend dem CSMA/CA-Verfahren durchführen, d.h. vor Beginn einer gerichteten Funkkommunikation über die Antenne 7 mit der OBU 3 in den dafür ausgewählten Kanal "omnidirektional hineinhören", um zu überprüfen, ob der Kanal frei ist. Alternativ oder zusätzlich kann der Sendeempfänger 5 über die omnidirektionale Antenne 12 eine RTS/CTS-Funktionalität entsprechend dem RTS/CTS-CSMA/CA-Verfahren durchführen, d.h. omnidirektional eine Kanalreservierungsnachricht ("Request to Send") RTS in dem für die gerichtete Funkkommunikation mit der OBU 3 ausgewählten Kanal ausstrahlen. Die OBU 3 kann beispielsweise mit einer Kanalreservierungsbestätigung ("Clear to send") CTS antworten, und andere Sendeempfangsgeräte wie das Sendeempfangsgerät 10 können eine oder beide der Nachrichten RTS, CTS hören und während der geschätzten Übertragungszeit von eigenen Sendungen Abstand nehmen, wie dem Fachmann bekannt.Via the omnidirectional antenna 12, the transceiver 5 can now carry out listen-before-talk functionality (LBT) in accordance with the CSMA / CA method, ie before starting a directed radio communication via the antenna 7 with the OBU 3 into the channel selected for this purpose. " listen in omnidirectionally "to check if the channel is free. Alternatively or additionally, the transceiver 5 can perform an RTS / CTS functionality via the omnidirectional antenna 12 in accordance with the RTS / CTS-CSMA / CA method, ie omnidirectionally a channel reservation message ("Request to Send") RTS in the direction for the radio communication the OBU 3 will broadcast selected channel. For example, the OBU 3 may respond with a "clear to send" CTS, and other transceivers such as the transceiver 10 may listen to one or both of the RTS, CTS messages, and during distance the estimated transmission time from own transmissions as known to those skilled in the art.

Die LBT- und RTS-Funktionalitäten können auch aufeinanderfolgend ausgeführt werden, d.h. der Sendeempfänger 5 überprüft in einem ersten Schritt, ob der ausgewählte Kanal frei ist (LBT), und in einem zweiten Schritt sendet er dann die Kanalreservierungsnachricht RTS.The LBT and RTS functionalities may also be performed sequentially, i. the transceiver 5 checks in a first step whether the selected channel is idle (LBT) and in a second step it then transmits the channel reservation message RTS.

Nach Überprüfung, ob der Kanal frei ist (LBT), oder nach Empfang der Kanalreservierungsbestätigung CTS kann entweder die gesamte Funkkommunikation des Sendeempfängers 5 mit der OBU 3 über die direktionale Antenne 7 abgewickelt werden oder der Sendeempfänger 5 sendet über die omnidirektionale Antenne 12 und empfängt über die direktionale Antenne 7.After checking whether the channel is idle (LBT) or after receiving the channel reservation acknowledgment CTS, either all radio communication of the transceiver 5 with the OBU 3 can be handled via the directional antenna 7 or the transceiver 5 transmits over the omnidirectional antenna 12 and receives the directional antenna 7.

Unter dem Begriff "omnidirektional" wird in der vorliegenden Beschreibung eine beliebige Rundstrahlcharakteristik verstanden, welche nicht notwendigerweise eine kreis- oder kugelförmige Rundstrahlcharakteristik sein muß. Unter dem Begriff "direktional" wird in der vorliegenden Beschreibung eine Richtstrahlcharakteristik verstanden, die nicht notwendigerweise uni-direktional ist, d.h. nur eine einzige Ausbreitungskeule hat, sondern auch mehrere Ausbreitungskeulen aufweisen könnte, z.B. Haupt- und Nebenkeulen, Vor- und Rückkeulen usw.In the present description, the term "omnidirectional" means any omnidirectional characteristic which does not necessarily have to be a circular or spherical omnidirectional characteristic. By the term "directional" in the present specification is meant a directional beam characteristic which is not necessarily unidirectional, i. has only a single spreading lobe, but could also have several spreading lobes, e.g. Main and side lobes, fore and aft lobes etc.

Die Erfindung ist demgemäß nicht auf die dargestellten Ausführungsformen beschränkt, sondern umfaßt alle Varianten und Modifikationen, die in den Rahmen der angeschlossenen Ansprüche fallen.The invention is therefore not limited to the illustrated embodiments, but includes all variants and modifications that fall within the scope of the appended claims.

Claims (4)

Bake mit einem Sendeempfänger zur Funkkommunikation mit Fahrzeug-OBUs eines Straßenmautsystems, wobei der Sendeempfänger (5) eine direktionale Antenne (7) aufweist und dafür eingerichtet ist, mit OBUs (3) auf einem ausgewählten Kanal über die direktionale Antenne (7) gerichtet zu funkkommunizieren, dadurch gekennzeichnet, daß der Sendeempfänger (5) zusätzlich mit einer omnidirektionalen Antenne (12) ausgestattet und dafür ausgebildet ist, vor Beginn einer gerichteten Funkkommunikation (8) mittels der omnidirektionalen Antenne (12) eine Kanalreservierungsnachricht (RTS) auszusenden und/oder zu überprüfen, ob der ausgewählte Kanal frei (LBT) ist.A beacon having a transceiver for radio communication with vehicle OBUs of a road toll system, the transceiver (5) having a directional antenna (7) and being adapted to radio communicate with OBUs (3) on a selected channel via the directional antenna (7) , characterized in that the transceiver (5) is additionally equipped with an omnidirectional antenna (12) and adapted to emit and / or check a channel reservation message (RTS) before the start of directional radio communication (8) by means of the omnidirectional antenna (12) whether the selected channel is free (LBT). Bake nach Anspruch 1, dadurch gekennzeichnet, daß der Sendeempfänger (5) dafür ausgebildet ist, zuerst zu überprüfen, ob der ausgewählte Kanal frei (LBT) ist, und dann die Kanalreservierungsnachricht (RTS) auszusenden.A beacon according to claim 1, characterized in that the transceiver (5) is adapted to first check that the selected channel is clear (LBT) and then to transmit the channel reservation message (RTS). Bake nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die gerichtete Funkkommunikation (8) nach dem DSRC- oder WAVE-Standard erfolgt.Beacon according to Claim 1 or 2, characterized in that the directional radio communication (8) takes place according to the DSRC or WAVE standard. Bake nach einem der Ansprüche 1 bis 3, gekennzeichnet durch einen über einer Straße (1) montierten Träger (9), an welchem die direktionale Antenne (7) und die omnidirektionale Antenne (12) montiert sind.Beacon according to one of Claims 1 to 3, characterized by a support (9) mounted above a road (1) to which the directional antenna (7) and the omnidirectional antenna (12) are mounted.
EP10450066A 2010-04-22 2010-04-22 Beacon for a street toll system Not-in-force EP2381731B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
PL10450066T PL2381731T3 (en) 2010-04-22 2010-04-22 Beacon for a street toll system
SI201030036T SI2381731T1 (en) 2010-04-22 2010-04-22 Beacon for a street toll system
AT10450066T ATE551872T1 (en) 2010-04-22 2010-04-22 BAKE FOR A ROAD TOLL SYSTEM
EP10450066A EP2381731B1 (en) 2010-04-22 2010-04-22 Beacon for a street toll system
ES10450066T ES2385209T3 (en) 2010-04-22 2010-04-22 Beacon for a road toll system
DK10450066.5T DK2381731T3 (en) 2010-04-22 2010-04-22 Books for a toll system
PT10450066T PT2381731E (en) 2010-04-22 2010-04-22 Beacon for a street toll system
US13/088,971 US8830087B2 (en) 2010-04-22 2011-04-18 Beacon for a road toll system
CA2737837A CA2737837C (en) 2010-04-22 2011-04-21 Beacon for a road toll system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10450066A EP2381731B1 (en) 2010-04-22 2010-04-22 Beacon for a street toll system

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EP2381731A1 true EP2381731A1 (en) 2011-10-26
EP2381731B1 EP2381731B1 (en) 2012-03-28

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US (1) US8830087B2 (en)
EP (1) EP2381731B1 (en)
AT (1) ATE551872T1 (en)
CA (1) CA2737837C (en)
DK (1) DK2381731T3 (en)
ES (1) ES2385209T3 (en)
PL (1) PL2381731T3 (en)
PT (1) PT2381731E (en)
SI (1) SI2381731T1 (en)

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ATE551872T1 (en) 2012-04-15
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PT2381731E (en) 2012-06-20
DK2381731T3 (en) 2012-07-16
US20110263207A1 (en) 2011-10-27
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PL2381731T3 (en) 2012-09-28

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