EP1376512B1 - Method for transfering information and information receiver - Google Patents

Method for transfering information and information receiver Download PDF

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Publication number
EP1376512B1
EP1376512B1 EP03400038A EP03400038A EP1376512B1 EP 1376512 B1 EP1376512 B1 EP 1376512B1 EP 03400038 A EP03400038 A EP 03400038A EP 03400038 A EP03400038 A EP 03400038A EP 1376512 B1 EP1376512 B1 EP 1376512B1
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European Patent Office
Prior art keywords
information
transmitted
tmc
supplementary
data group
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EP03400038A
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German (de)
French (fr)
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EP1376512A2 (en
EP1376512A3 (en
Inventor
Arne Friedrichs
Gerd Draeger
Gerold Bertram
Volker Skwarek
Ralf Duckeck
Moez Selem
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Robert Bosch GmbH
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Robert Bosch GmbH
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/091—Traffic information broadcasting
    • G08G1/092—Coding or decoding of the information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/55—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for traffic information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/02—Arrangements for generating broadcast information; Arrangements for generating broadcast-related information with a direct linking to broadcast information or to broadcast space-time; Arrangements for simultaneous generation of broadcast information and broadcast-related information
    • H04H60/07—Arrangements for generating broadcast information; Arrangements for generating broadcast-related information with a direct linking to broadcast information or to broadcast space-time; Arrangements for simultaneous generation of broadcast information and broadcast-related information characterised by processes or methods for the generation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
    • H04H2201/13—Aspects of broadcast communication characterised by the type of broadcast system radio data system/radio broadcast data system [RDS/RBDS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
    • H04H2201/20—Aspects of broadcast communication characterised by the type of broadcast system digital audio broadcasting [DAB]

Definitions

  • Methods are known for generating uniform traffic reports. These include, for example, the ALERT C protocol, after which the messages of the Traffic Message Channel (TMC) are generated. This protocol is optimized to minimize the message size for transmission over high bandwidth limited FM broadcast channels.
  • TMC Traffic Message Channel
  • RTM Road Traffic Message
  • the inventive method extends the existing TMC messages according to the ALERT C protocol without changing the message format so that any additional information can be assigned.
  • a traffic message is divided into a base message and an optional supplementary message.
  • the basic message corresponds completely to the ALERT-C specifications, while the supplementary message may initially include unspecified contents.
  • previously existing but unoccupied groups are used in the associated TMC base message. These are marked in the ALERT C protocol by so-called LABEL.
  • Such a message may include 12 16-bit payload data when using the label 12.
  • When using the label 15 is not yet determined how many bits may include the user data. These user data are reduced by further 4 bits according to the inventive method, whereby a so-called sub-label with another 16 states is introduced. This sub-label allows the labeling of sub-services to label 12.
  • the remaining 12 bits are used as true user data and allow, for example, a unique assignment of an optional additional message to a mandatory base message.
  • GROUPS of the Radio Data Service (RDS) protocol.
  • RDS Radio Data Service
  • application numbers or application IDs are assigned in group 3A. If such a application number is assigned to the new service, it is also possible to use the user data available there.
  • the advantage of the entire method according to the invention is that it is set up on a proven data-optimized protocol for traffic information transmission. This protocol is not modified but only extended so that there is still full backward compatibility. Only the extended message share can not be evaluated by old terminals.
  • this method can be applied to any channel on which the ALERT C protocol can be used.
  • the method according to the invention first assumes that traffic reports are generated according to the ALERT C protocol, which consist of a base message and a supplementary message.
  • the basic message corresponds to the known TMC format and is broadcast, for example, via FM-RDS services or DAB-FIC parallel to the broadcast program. These messages can thus be received in addition to the audio-radio operation.
  • the TMC messages are a highly optimized data format in which messages can be accommodated in less than 100 bits.
  • the low spatial resolution of the traffic messages which are bound to so-called place tables, proves disadvantageous. If all traffic-related road departures are to be included in such place tables, this results in an administrative burden and
  • additional information can be integrated by the method according to the invention via supplementary messages, which adds, for example via suitable georeferencing methods, a better spatial resolution to the basic message.
  • the receiving terminal which can process the enhanced traffic information service, now switches to a known supplemental TMC message extension and awaits a message corresponding to that message ID.
  • the additional channel in the same ensemble can also be decoded in parallel. This offers the advantage of faster decoding.
  • this information can be transmitted via further channels specified in the corresponding transmission medium.
  • An example of this is the 3A group of the RDS protocol, in which an application ID (AID) can be specified. If the extended TMC service is assigned its own AID, a corresponding receiver can evaluate a 3A message of the RDS protocol in the context of the extended TMC message. This message then contains the necessary additional information necessary to uniquely describe the channel on which the additional message is expected ( Figure 3). In the case of DAB, a service component is referenced in this case.
  • DAB can combine the TMC basic service and the extended TMC functionality into one DAB service.
  • the particular advantage here lies in the simple assignment of TMC basic messages and additional messages, since no 3A groups were evaluated to find the channel for the additional messages ( Figure 4).
  • the DAB TMC basic service and the DAB TMC supplementary service are implicitly linked by the DAB signaling as being in a service.
  • the shoe street in Hildesheim is to be closed on 28.11.2001 because of an event from 12: 00-16: 00 clock.
  • the following TMC message is generated for this purpose, which is referred to below as the base message:
  • a vehicle driver receives the TMC basic message with a terminal according to the invention and can decrypt the following message:
  • the device recognizes from the label 12 and the sub-label (0001 dual) in 4 bits of the 16-bit payload that there is an extended TMC message. In the remaining user data, the device further recognizes that it must be a message with the identifier 647. On a further, known channel, the terminal now calls the required additional information. The terminal now switches to another channel, which is known for the reception of TMC additional messages. There, the device waits for a message describing an event on November 28, 2001 from 12: 00-16: 00 with the ID 647 in more detail. For DAB, parallel decoding may be required. Alternatively, the wait state of the device may also be terminated by other events, such as the expiration of a timer.
  • the channel of the additional data need not be set beforehand. Instead, the RDS AID 34 has been defined in the group 3A for the extended TMC service. Following the present message, the AID 34 is now expected in the RDS group 3A, in whose user data the channel is described on which the additional information will be available. For DAB this is the Ensemble Identifier (Eld), Service Identifier (Sld) and Service Component Identifier within the Service (SCIDs) or Service Component Identifier (SCld).
  • a receiver of the invention evaluates the TMC base messages from that DAB service in combination with the TMC supplemental messages from that service.
  • the DAB service consists, for example, of a primary audio component, basic TMC component and additional TMC component.

Description

Es sind Verfahren zur Erzeugung von einheitlichen Verkehrsmeldungen bekannt. Dazu gehören beispielsweise das ALERT C-Protokoll, nach dem die Meldungen des Traffic Message Channel (TMC) generiert werden. Dieses Protokoll ist auf die Minimierung des Nachrichtenumfanges zur Übertragung über stark bandbreitenlimitierte FM-Rundfunkkanäle optimiert.Methods are known for generating uniform traffic reports. These include, for example, the ALERT C protocol, after which the messages of the Traffic Message Channel (TMC) are generated. This protocol is optimized to minimize the message size for transmission over high bandwidth limited FM broadcast channels.

Weiterhin existiert das Road Traffic Message (RTM) Verfahren, das weitaus detailliertere Nachrichten als TMC zuläßt. Durch diesen Detaillierungsgrad werden jedoch die Datenmengen deutlich erhöht, so dass hier vornehmlich ein Einsatz über hochdatenratige Kanäle wie DAB, GSM oder UMTS vorgesehen ist.Furthermore, the Road Traffic Message (RTM) method exists, which allows much more detailed messages than TMC. Due to this level of detail, however, the amount of data is significantly increased, so that primarily a use over high data rate channels such as DAB, GSM or UMTS is provided.

Derzeit steht jedoch kein standardisiertes Verfahren zur Verfügung, das eine Verkehrsmeldung in einen komprimierten Anteil zur optimierten Datenübertragung über limierte Kanäle und in einen optionalen ergänzenden Anteil über erweiterte Kanäle zuläßt. Dabei soll über die verpflichtende Nachricht auf die optionale Nachricht und deren Auffindbarkeit hingewiesen werden.At present, however, there is no standardized method that allows a traffic message in a compressed portion for optimized data transmission over limed channels and in an optional supplementary portion over extended channels. The obligatory message should indicate the optional message and its findability.

Diesbezüglich ist lediglich ein unter xTMC bekanntes Verfahren bei Bosch unter der Patentnummer DE19905893 , EP-A-1030475 angemeldet worden. Dieses beruht im wesentlichen darauf, daß vor den bekannten TMC-Nachrichten ein zusätzlicher Header vorangestellt wird, der auf einen zusätzlichen folgenden, nicht unbedingt ALERT C konformen Anteil hinweist. Dieses Verfahren ist aber insbesondere dann von Nachteil, wenn über einen Kanal nur TMC spezifische Informationen gesendet werden dürfen. In diesem Fall ist auch kein zusätzlicher xTMC-Header erlaubt, der weitere Nachrichten ankündigt.In this respect, only a method known under xTMC is under the patent number of Bosch DE19905893 . EP-A-1030475 been registered. This is essentially due to the fact that prior to the known TMC messages an additional header is prefixed, indicating an additional following, not necessarily ALERT C compliant proportion. However, this method is particularly disadvantageous if only TMC-specific information may be sent over a channel. In this case, no additional xTMC header is allowed, which announces further messages.

Aus der DE-A-10038765 ist ein ähnliches Verfahren bekannt, bei dem ebenfalls zur Ankündigung von ergänzenden Informationen einer Informationen tragenden Informationsgruppe ein Header vorangestellt wird.From the DE-A-10038765 A similar method is known in which a header is also prefixed to announce supplementary information of an information-bearing information group.

2.2 Aufgabe der Erfindung2.2 Object of the invention

Das erfindungsgemäße Verfahren erweitert die vorhandenen TMC-Meldungen nach dem ALERT C-Protokoll ohne eine Änderung des Nachrichtenformates so, daß beliebige Zusatzinformationen zugeordnet werden können.The inventive method extends the existing TMC messages according to the ALERT C protocol without changing the message format so that any additional information can be assigned.

2.3 Kern und Vorteile der Erfindung2.3 Core and advantages of the invention

Eine Verkehrsmeldung wird in eine Basisnachricht und eine optionale Ergänzungsnachricht aufgeteilt. Die Basisnachricht entspricht dabei vollständig den ALERT-C Spezifikationen, während die Ergänzungsnachricht zunächst nicht näher spezifizierte Inhalte umfassen kann. Um die Existenz einer erweiterten Nachricht zu kennzeichnen, werden in der dazugehörigen TMC-Basisnachricht bisher vorhandene, aber nicht belegte Gruppen verwendet. Diese werden im ALERT C Protokoll durch sogenannte LABEL gekennzeichnet. Eine solche Nachricht kann bei Nutzung des Label 12 16 Bit Nutzdaten umfassen. Bei Nutzung des Label 15 ist noch nicht festgelegt, wie viele Bits die Nutzdaten umfassen dürfen. Diese Nutzdaten werden nach erfindungsgemäßem Verfahren um weitere 4 Bit reduziert, wodurch ein sogenanntes Sublabel mit weiteren 16 Zuständen eingeführt wird. Durch dieses Sublabel ist die Kennzeichnung von Subdiensten zu Label 12 möglich. Die verbleibenden 12 Bit werden als echte Nutzdaten verwendet und ermöglichen beispielsweise eine eindeutige Zuordnung einer optionalen Zusatznachricht zu einer verpflichtenden Basisnachricht.A traffic message is divided into a base message and an optional supplementary message. The basic message corresponds completely to the ALERT-C specifications, while the supplementary message may initially include unspecified contents. In order to mark the existence of an extended message, previously existing but unoccupied groups are used in the associated TMC base message. These are marked in the ALERT C protocol by so-called LABEL. Such a message may include 12 16-bit payload data when using the label 12. When using the label 15 is not yet determined how many bits may include the user data. These user data are reduced by further 4 bits according to the inventive method, whereby a so-called sub-label with another 16 states is introduced. This sub-label allows the labeling of sub-services to label 12. The remaining 12 bits are used as true user data and allow, for example, a unique assignment of an optional additional message to a mandatory base message.

In einer vorteilhaften Weiterentwicklung lassen sich in den sogenannten GRUPPEN des Radio Data Service (RDS)-Protokolls weitere Informationen unterbringen. Beispielsweise werden in der Gruppe 3A Anwendungsnummern bzw. Application IDs vergeben. Wenn eine solche Applicationsnummer dem neuen Dienst zugeordnet wird, ist es möglich, auch die dort zur Verfügung stehenden Nutzdaten zu verwenden.In an advantageous further development, further information can be accommodated in the so-called GROUPS of the Radio Data Service (RDS) protocol. For example, application numbers or application IDs are assigned in group 3A. If such a application number is assigned to the new service, it is also possible to use the user data available there.

Der Vorteil des gesamten erfindungsgemäßen Verfahrens besteht darin, daß auf einem bewährten datenoptimierten Protokoll zur Verkehrsnachrichtenübertragung aufgesetzt wird. Dieses Protokoll wird nicht modifiziert, sondern nur erweitert, so daß weiterhin eine vollständige Abwärtskompatibilität besteht. Lediglich der erweiterte Meldungsanteil läßt sich nicht durch alte Endgeräte auswerten.The advantage of the entire method according to the invention is that it is set up on a proven data-optimized protocol for traffic information transmission. This protocol is not modified but only extended so that there is still full backward compatibility. Only the extended message share can not be evaluated by old terminals.

Weiterhin läßt sich dieses Verfahren auf jedem Kanal anwenden auf dem das ALERT C-Protokoll eingesetzt werden kann.Furthermore, this method can be applied to any channel on which the ALERT C protocol can be used.

2.4 Aufbau und Funktion2.4 Structure and function

Das erfindungsgemäße Verfahren setzt zunächst voraus, daß Verkehrsmeldungen nach dem ALERT C-Protokoll erzeugt werden, die aus einer Basis- und einer Ergänzungsmeldung bestehen. Die Basismeldung entspricht dem bekannten TMC-Pormät und wird beispielsweise über FM-RDS-Dienste oder DAB-FIC parallel zum Rundfunkprogramm ausgestrahlt. Diese Meldungen können somit neben dem Audio-Radiobetrieb empfangen werden. Dies ist insbesondere dadurch möglich, daß es sich bei den TMC-Meldungen um ein hochoptimiertes Datenformat handelt, indem Nachrichten in weniger als 100 Bit untergebracht werden können. Nach dem derzeitigen Stand des ALERT C-Protokolls erweist sich jedoch die geringe Ortsauflösung der Verkehrsnachrichten, die an sogenannte Ortstabellen gebunden sind, als nachteilhaft. Wenn alle verkehrsrelevanten Straßenabfahrten in derartige Ortstabellen aufgenommen werden sollen, ergibt sich daraus ein Verwaltungsaufwand undThe method according to the invention first assumes that traffic reports are generated according to the ALERT C protocol, which consist of a base message and a supplementary message. The basic message corresponds to the known TMC format and is broadcast, for example, via FM-RDS services or DAB-FIC parallel to the broadcast program. These messages can thus be received in addition to the audio-radio operation. This is particularly possible because the TMC messages are a highly optimized data format in which messages can be accommodated in less than 100 bits. However, according to the current state of the ALERT C protocol, the low spatial resolution of the traffic messages, which are bound to so-called place tables, proves disadvantageous. If all traffic-related road departures are to be included in such place tables, this results in an administrative burden and

Tabellengrößen, die für handelsübliche Endgeräte nur schwer handhabbar sind.Table sizes that are difficult to handle for commercial end devices.

Als vorteilhafte Weiterentwicklung lassen sich durch das erfindungsgemäße Verfahren über Ergänzungsmeldungen Zusatzinformationen integrieren, die beispielsweise über geeignete Georeferenzierungsverfahren eine bessere Ortsauflösung zur Basismeldung hinzufügt.As an advantageous further development, additional information can be integrated by the method according to the invention via supplementary messages, which adds, for example via suitable georeferencing methods, a better spatial resolution to the basic message.

Die Gesamtmeldung setzt sich dann folgendermaßen zusammen (Abbildung 1):

  • TMC-Basismeldung in RDS-Gruppe 8.
  • Kennzeichnung einer Zusatzmeldung unter einem zumindest teilweise ungenutzten Label (z. B. 12 oder 15) in der RDS-Gruppe 8.
  • Die Nutzdaten der Meldung unter Gruppe 8 werden um 4 Bit für ein Sublabel reduziert. Das Sublabel wird dann beispielsweise auf (0001dual) gesetzt, wodurch der erweiterte TMC-Dienst gekennzeichnet wird.
  • In den verbleibenden Nutzdaten (12 Bit) wird eine eindeutige Nachrichten-ID der Meldung vergeben, nach der auf demjenigen Kanal gesucht werden soll, auf dem die erweiterten TMC-Meldungen ausgestrahlt werden.
The overall message is then composed as follows (Figure 1):
  • TMC Basic Message in RDS Group 8.
  • Identification of an additional message under an at least partially unused label (eg 12 or 15) in the RDS group 8.
  • The payload of the message under group 8 is reduced by 4 bits for a sublabel. The sub-label is then set to (0001dual), for example, indicating the enhanced TMC service.
  • The remaining user data (12 bits) is assigned a unique message ID of the message to be searched for on the channel on which the extended TMC messages are broadcast.

Das empfangende Endgerät, das den erweiterten Verkehrsnachrichtendienst verarbeiten kann, schaltet nun auf einen bekannten Zusatzkanal für erweiterte TMC-Meldungen und wartet dort auf eine Nachricht, die dieser Nachrichten-ID entspricht. Bei DAB kann der Zusatzkanal im gleichen Ensemble auch parallel dekodiert werden. Dies bietet den Vorteil einer schnelleren Dekodierung.The receiving terminal, which can process the enhanced traffic information service, now switches to a known supplemental TMC message extension and awaits a message corresponding to that message ID. With DAB, the additional channel in the same ensemble can also be decoded in parallel. This offers the advantage of faster decoding.

Dadurch, daß sich durch die verbleibenden 12-Bit Nutzdaten nur 4096 Nachrichten-lDs abdecken lassen, werden in einer vorteilhaften Weiterentwicklung weitere Erkennungsmerkmale in die Zusatznachrichten eingebunden. Beispiele dafür sind

  • die Einprägung von eindeutiger Uhrzeit und Datum in TMC- und Zusatzmeldung oder auch
  • die Wiederholung der TMC-Basismeldung in der Zusatznachricht (Abbildung 2).
Due to the fact that only 4096 message IDs can be covered by the remaining 12-bit payload data, further identification features are integrated into the additional messages in an advantageous further development. Examples are
  • the imprint of clear time and date in TMC and additional message or also
  • the repetition of the basic TMC message in the supplemental message (Figure 2).

Bisher wird davon ausgegangen, daß der Empfänger den Kanal kennt, auf dem die Zusatzmeldung nach dem Erhalt einer Basismeldung übertragen wird. In einer vorteilhaften Weiterentwicklung läßt sich diese Information über weitere in dem entsprechenden Übertragungsmedium spezifizierte Kanäle übertragen. Ein Beispiel dafür ist die 3A-Gruppe des RDS-Protokolls, in der sich eine Application-lD (AID) angeben läßt. Wenn für den erweiterten TMC-Dienst eine eigene AID vergeben wird, kann ein entsprechender Empfänger im Zusammenhang mit der als erweitert gekennzeichneten TMC-Nachricht eine 3A-Meldung des RDS-Protokolls ausgewertet werden. Diese Meldung enthält dann die notwendigen Zusatzinformationen, die zur eindeutigen Beschreibung des Kanals notwendig ist, auf der die Zusatzmeldung zu erwarten ist (Abbildung 3). Bei DAB wird in diesem Falle eine Service-Komponente (service component) referenziert.So far, it is assumed that the receiver knows the channel on which the additional message is transmitted after receiving a basic message. In an advantageous further development, this information can be transmitted via further channels specified in the corresponding transmission medium. An example of this is the 3A group of the RDS protocol, in which an application ID (AID) can be specified. If the extended TMC service is assigned its own AID, a corresponding receiver can evaluate a 3A message of the RDS protocol in the context of the extended TMC message. This message then contains the necessary additional information necessary to uniquely describe the channel on which the additional message is expected (Figure 3). In the case of DAB, a service component is referenced in this case.

Als weitere Möglichkeit kann bei DAB der TMC-Basisdienst und die erweiterte TMC-Funktionalität in einem DAB Service zusammengefasst werden. Der besondere Vorteil liegt hier in der einfachen Zuordnung von TMC-Basismeldungen und Zusatznachrichten, da keine 3A Gruppen ausgewertet werden müssen um den Kanal für die Zusatznachrichten zu finden (Abbildung 4). Der DAB TMC-Basisdienst und der DAB TMC-Zusatzdienst sind durch die DAB Signalisierung als in einem Service befindlich implizit miteinander verknüpft.As an additional option, DAB can combine the TMC basic service and the extended TMC functionality into one DAB service. The particular advantage here lies in the simple assignment of TMC basic messages and additional messages, since no 3A groups were evaluated to find the channel for the additional messages (Figure 4). The DAB TMC basic service and the DAB TMC supplementary service are implicitly linked by the DAB signaling as being in a service.

2.5 Ausführungsbeispiele2.5 embodiments

Die Schuhstraße in Hildesheim soll am 28.11.2001 wegen einer Veranstaltung von 12:00-16:00 Uhr gesperrt werden. Dazu wird folgende TMC-Meldung generiert, die im folgenden Basisnachricht genannt wird:The shoe street in Hildesheim is to be closed on 28.11.2001 because of an event from 12: 00-16: 00 clock. The following TMC message is generated for this purpose, which is referred to below as the base message:

Aufgrund der reduzierten Ortsauflösung läßt sich durch das ALERT C-Protokoll nur die Location ... zuordnen. Durch ein geeignetes Georeferenzierungsverfahren wird die Meldung exakt referenziert, und die Zusatzdaten werden in einer Ergänzungsnachricht der Basismeldung hinzugefügt.
Ein Fahrzeugführer empfängt die TMC-Basismeldung mit einem erfindungsgemäßen Endgerät und kann folgende Meldung entschlüsseln:Due to the reduced spatial resolution, only the location ... can be assigned by the ALERT C protocol. By a suitable georeferencing method, the message is exactly referenced, and the additional data is added to the basic message in a supplemental message.
A vehicle driver receives the TMC basic message with a terminal according to the invention and can decrypt the following message:

Das Gerät erkennt anhand des Labels 12 und des Sublabels (0001 dual) in 4 Bit der 16 Bit Nutzdaten, daß eine erweiterte TMC-Meldung vorliegt. In den übrigen Nutzdaten erkennt das Gerät weiterhin, daß es sich um eine Nachricht mit der Kennung 647 handeln muß. Auf einem weiteren, bekannten Kanal ruft das Endgerät nun die erforderlichen Zusatzinformationen ab. Das Endgerät schaltet nun auf einen weiteren Kanal, der für den Empfang von TMC-Zusatzmeldungen bekannt ist. Dort wartet das Gerät eine Meldung, die ein Ereignis am 28.11.2001 von 12:00-16:00 Uhr mit der Kennung 647 genauer beschreibt. Bei DAB erfolgt ggf. eine parallele Dekodierung. Alternativ kann der Wartezustand des Gerätes auch durch andere Ereignisse, wie beispielsweise der Ablauf eines Zeitgebers beendet werden.The device recognizes from the label 12 and the sub-label (0001 dual) in 4 bits of the 16-bit payload that there is an extended TMC message. In the remaining user data, the device further recognizes that it must be a message with the identifier 647. On a further, known channel, the terminal now calls the required additional information. The terminal now switches to another channel, which is known for the reception of TMC additional messages. There, the device waits for a message describing an event on November 28, 2001 from 12: 00-16: 00 with the ID 647 in more detail. For DAB, parallel decoding may be required. Alternatively, the wait state of the device may also be terminated by other events, such as the expiration of a timer.

Wenn das Gerät über die vorteilhafte Ergänzung verfügt, muß der Kanal der Zusatzdaten nicht vorher festgelegt werden. Stattdessen wurde die RDS AID 34 in der Gruppe 3A für den erweiterten TMC-Dienst definiert Nach der vorliegenden Meldung wird nun in der RDS-Gruppe 3A die AID 34 erwartet, in deren Nutzdaten der Kanal beschrieben wird, auf dem die Zusatzinformationen vorliegen werden. Für DAB ist dies der Ensemble Identifier (Eld), Service ldentifier (Sld) und Service Component Identifier within the Service (SCIDs) bzw. Service Component Identifier (SCld).
Falls bei DAB der TMC-Basisdienst und der erweiterte TMC-Dienst im gleichen Service übertragen werden, wertet ein erfindungsgemäßer Empfänger die TMC-Basisnachrichten aus diesem DAB-Service in Kombination mit den TMC-Zusatznachrichten aus diesem Service aus. Der DAB Service besteht zum Beispiel aus einer primary audio Komponente, TMC-Basiskomponente und TMC-Zusatzkomponente. If the device has the advantageous addition, the channel of the additional data need not be set beforehand. Instead, the RDS AID 34 has been defined in the group 3A for the extended TMC service. Following the present message, the AID 34 is now expected in the RDS group 3A, in whose user data the channel is described on which the additional information will be available. For DAB this is the Ensemble Identifier (Eld), Service Identifier (Sld) and Service Component Identifier within the Service (SCIDs) or Service Component Identifier (SCld).
In DAB, if the TMC base service and the enhanced TMC service are transmitted in the same service, a receiver of the invention evaluates the TMC base messages from that DAB service in combination with the TMC supplemental messages from that service. The DAB service consists, for example, of a primary audio component, basic TMC component and additional TMC component.

Claims (13)

  1. Method for transmitting information, the information being transmitted in data groups, the information comprising at least one coded event description which is transmitted in a first data group, and supplementary information being transmitted in at least one supplementary data group, the supplementary data group being announced in the first data group.
  2. Method according to Claim 1, characterized in that the supplementary information is transmitted using an alternative transmission channel and reference is made to the alternative transmission channel in at least one first data group within which the information is transmitted.
  3. Method according to one of the preceding claims, characterized in that the information is transmitted in accordance with the TMC standard, preferably within the RDS (Radio Data System) signal using VHF broadcast radio, or using digital broadcast radio such as DAB, DSR or the like, or using mobile radio, preferably in accordance with the GSM, GPRS or UMTS standard.
  4. Method according to Claim 3, characterized in that the supplementary information is transmitted in at least one additional RDS data group.
  5. Method according to Claim 4, characterized in that the supplementary information is marked as supplemental information within the at least one additional data group using a supplemental information identifier, a so-called "label".
  6. Method according to Claim 5, characterized in that the supplemental information identifier corresponds to the label used in multi group messages in accordance with the ISO 14819-1 TMC specification.
  7. Method according to Claim 4, characterized in that the supplementary information is marked within the at least one additional data group using an extended supplemental information identifier comprising a supplemental information identifier, a so-called "label", and a supplemental information subidentifier, a so-called "sublabel".
  8. Method according to Claim 7, characterized in that the supplemental information identifier corresponds to the label used in multi group messages in accordance with the ISO 14819-1 TMC specification, and in that further data bits of the data field which adjoin the label are used for the sublabel in accordance with the ISO 14819-1 TMC specification.
  9. Method according to Claim 3, characterized in that a reference to an alternative transmission channel or to at least one supplementary data group is transmitted as part of an application identifier (application ID) which is used to mark TMC information within the radio data signal and is transmitted in a different data group to the information.
  10. Method according to Claim 3, characterized in that a reference to subsequent alternative transmission of extended information, which comprises the information and the supplementary information, instead of conventional information, in particular TMC information, is transmitted using an application identifier (application ID) which has been adapted for this purpose, is used to mark TMC information within the radio data signal and is transmitted in a different data group to the information.
  11. Receiver for receiving coded information, in particular traffic announcements or traffic-related information, the information being transmitted in data groups, an item of information comprising at least one coded event description, in particular a coded event description and a coded location description, and supplementary information which is preferably used to render the coded event description and/or location description more precise being transmitted, the receiver having means for detecting the information and the additional information.
  12. Receiver according to Claim 12, characterized by
    - means for receiving the information,
    - means for detecting a reference to an alternative transmission channel,
    - means for detecting and receiving the supplementary information transmitted using the alternative transmission channel.
  13. Receiver according to Claim 12 or 13 for receiving TMC information or extended TMC information, which comprises information and supplementary information, said receiver having means for detecting an identifier which announces the transmission of extended information, in particular an application identifier which has been adapted for this purpose.
EP03400038A 2002-06-28 2003-06-24 Method for transfering information and information receiver Expired - Lifetime EP1376512B1 (en)

Applications Claiming Priority (2)

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DE10229195 2002-06-28
DE2002129195 DE10229195A1 (en) 2002-06-28 2002-06-28 Information transmission procedures and information recipients

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EP1376512A2 EP1376512A2 (en) 2004-01-02
EP1376512A3 EP1376512A3 (en) 2005-09-28
EP1376512B1 true EP1376512B1 (en) 2007-09-05

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DE (2) DE10229195A1 (en)
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Also Published As

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DE50308097D1 (en) 2007-10-18
ES2289251T3 (en) 2008-02-01
DE10229195A1 (en) 2004-01-15
EP1376512A2 (en) 2004-01-02
EP1376512A3 (en) 2005-09-28

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