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EP1244234A2 - Method for sending digital broadcast signals with transmission of supra-regional and regional broadcast programmes in a given time zone and transmission zone - Google Patents

Method for sending digital broadcast signals with transmission of supra-regional and regional broadcast programmes in a given time zone and transmission zone Download PDF

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Publication number
EP1244234A2
EP1244234A2 EP02006128A EP02006128A EP1244234A2 EP 1244234 A2 EP1244234 A2 EP 1244234A2 EP 02006128 A EP02006128 A EP 02006128A EP 02006128 A EP02006128 A EP 02006128A EP 1244234 A2 EP1244234 A2 EP 1244234A2
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EP
European Patent Office
Prior art keywords
regional
radio
program
broadcast
transmission
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.)
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EP02006128A
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German (de)
French (fr)
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EP1244234A3 (en
Inventor
Hartwig Koch
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Robert Bosch GmbH
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Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1244234A2 publication Critical patent/EP1244234A2/en
Publication of EP1244234A3 publication Critical patent/EP1244234A3/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H04H20/67—Common-wave systems, i.e. using separate transmitters operating on substantially the same frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/10—Arrangements for replacing or switching information during the broadcast or the distribution
    • 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

  • the invention is based on a method for sending digital broadcast signals according to the genre of the independent Claim.
  • DAB Digital Audio Broadcasting
  • a program channel that is known as an ensemble, at DAB in one Single-wave network broadcast. This means that all stations broadcast on the same frequency, the same broadcast signals. A There is no interference between them. So that can the ensemble nationwide on one and the same frequency be received.
  • the audio data is marked with a MPEG encoder source-coded. The subjectively heard quality The MPEG encoding depends on the amount of one generated data rate from and on the other from the type of Audio input signal. Classic needs a high one Data rate, simple speech can be heard without Loss of quality encoded at a very low rate become.
  • the MPEG encoder is currently fixed at DAB set so that e.g. as a fixed output Bit stream of 168 kilobytes / sec. for an audio channel.
  • the invention is therefore based on the object Process for sending digital broadcast signals too create it within a single frequency network enables, regionally limited radio programs radiate.
  • the Problem zone is solved, i.e. in the Transition areas between the transmission zones of two transmitters are regional programs of these two Receivable stations, provided both stations are on different regional program on the same frequency broadcast in the same subchannel. Now overlap different regional radio programs, it is for a receiver is not possible in this interference zone decode regional broadcast program correctly. Therefore then the radio receiver is on the same time switch nationally broadcast radio program and play this acoustically. However, are both transmitters wired in such a way that they are the same regional Broadcast radio program, then it is in this too Transition zone possible for the radio receiver, the regional broadcast radio program to decode.
  • a regional Broadcasting program is transmitted, in a frame, in to which the broadcast signals are transmitted in one specified data field is displayed.
  • DAB is for that for example the Fast Information Channel (FIC) is available.
  • FIC Fast Information Channel
  • Broadcasters also want digital Broadcasting method, such as DAB is to broadcast regional radio programs.
  • DAB digital Broadcasting method
  • SWR Spadwestrundfunk
  • the available data rate is therefore according to the invention to a national broadcasting program and a regional one Broadcasting program in a station in a particular Split time window. This becomes temporary for such Window carried out in, for example, local Messages are transmitted. Will be used both in the national as well as playing the same music in the regional can the full data rate can be used for the music.
  • FIG. 1 is a block diagram of an inventive Transmitter shown.
  • a data source 1 is connected to one Data input of a modulator 2 connected.
  • the modulator 2 is then to an input of an OFDM modulator 3 connected.
  • the OFDM modulator 3 is above its Data output connected to an amplifier 4.
  • To the Amplifier 4 is connected to an antenna 5 at the output.
  • the data source 1 provides the data to be transmitted.
  • the data source 1 can be connected via a communication network a central office, for example a broadcast studio from which the data to be transferred come.
  • This Communication network can be via satellite or wired or be realized via another radio connection.
  • the Data is then transmitted to the modulator 2, which according to modulates the data, especially here a QPSK (quadrature phase shift keying), i.e. there will be here four different angles for encoding the data used.
  • QPSK quadratture phase shift keying
  • This then becomes the output of the modulator 2 Modulation symbols that the OFDM modulator 3 on closely adjacent carriers distributed. Because the carrier this process is called orthogonal to each other orthogonal frequency division multiplexing (OFDM).
  • OFDM modulator 3 the OFDM signals are then on a transmission frequency implemented.
  • the OFDM signals are then a digital / analog converter fed to the amplifier 4 to amplify and send the antenna 5.
  • Data source 1 includes a source encoder, which is now if a regional radio program occurs in the decoding rate to a certain time window national broadcasting program and the regional Broadcasting program divides. This is only for a specific one Time, i.e. a time window, for example if regional and parallel national news be transmitted.
  • FIG 2 is a block diagram of an inventive Broadcast receiver shown.
  • An antenna 6 is a Radio frequency receiver 7 connected.
  • the High-frequency receiver 7 is digital Processing unit 8 connected.
  • the output of the digital Processing unit 8 is connected to an audio amplifier 9 connected.
  • the audio amplifier 9 operates one Speaker 10.
  • the radio receiver receives the with its antenna 6 broadcast signals and amplifies, filters and sets it into an intermediate frequency in the high-frequency receiver 7.
  • the high-frequency receiver 7 also carries out an analog / digital conversion by.
  • the resulting data stream is then from the digital processing unit 8, which is also a Processor can be processed. In doing so Channel decoding, demodulation and source coding carried out.
  • the digital Processing unit 8 detects whether in addition to the national Broadcasting program also a regional broadcasting program is transmitted.
  • the digital Processing unit 8 through the source decoding, since yes for the parallel transmission of regional and national radio programs a different Data rate used for these individual broadcast programs will when they are for the transfer of a sole national broadcasting program is used.
  • the so decoded radio programs are then sent to the Audio amplifier 9 passed the audio signals amplified and reproduced with the speaker 10.
  • FIG 3 is a flow chart of the invention Procedure shown that runs in the transmitter.
  • Method step 11 becomes a regional one Broadcasting program in addition to the national broadcasting program to be broadcast, the data rate on the regional Broadcasting program and the national broadcasting program divided up.
  • process step 12 these two the regional and national radio program, in put together in a time division multiplex to then in Method step 13 as digital radio signals to ship.
  • a frame structure is used for of either alternating regional radio audio data and supra-regional radio audio data are transmitted. It is a different division of the different ones Broadcast data possible.
  • Figure 4 is a flow chart shown that describes the method according to the invention, that happens in the receiver.
  • the digital broadcast signals receive.
  • the digital processing unit is now checking based on the data received, whether it is displayed in the FIC whether a regional radio program is being broadcast or not. If this is not the case, then in Method step 16 decodes the national program. However, if a regional radio program is broadcast, then is checked in step 17 whether the quality of the regional radio program is fine, so it will for example, the bit error rate is determined. Is that Bit error rate is below a certain threshold a high transmission quality before, then in Method step 18 the regional radio program decoded. If the bit error rate is too high, then in Method step 16 the national radio program decoded. This is followed by the audio amplification and the Play with the speaker.
  • FIG. 5a shows the division of the data rate into one regional window shown schematically.
  • the data rate is plotted and the time on the abscissa.
  • a part of Data rate stands for example for the transmission of Multimedia data, i.e. graphic or text data available.
  • Figure 5b shows a schematic transmitter illumination during the broadcasting of the regional radio program.
  • Zone 1 will be the first regional radio program broadcast in Zone 2 and in Zone 3 a third regional radio program.
  • zone 1 and 2 and between zones 2 and 3 there are interference zones.
  • the data of the regional radio program from zone 1 and from the zone 2 or up to Zone 2 and Zone 3. This is reception from the regional radio program in each of the interference zones not possible. Therefore, then in the radio receiver on the Decoding and playback of the supraregional Broadcasting program switched. Then that is the Problem zone problem solved.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
  • Radio Relay Systems (AREA)

Abstract

A transmitter for a shared-channel broadcast network sends out national and regional broadcast programs simultaneously with digital broadcast signals in a pre-determinable time window. An available data rate for the digital broadcast signals is measured out for each national and regional broadcast program. Independent claims are also included for a transmitter for carrying out the method of the present invention and for a broadcast receiver for carrying out the method of the present invention.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einem Verfahren zum Versenden von digitalen Rundfunksignalen nach der Gattung des unabhängigen Patentanspruchs.The invention is based on a method for sending digital broadcast signals according to the genre of the independent Claim.

Es ist bereits bekannt, DAB (Digital Audio Broadcasting) zum Versenden von digitalen Rundfunksignalen als Übertragungsverfahren zu verwenden. Ein Programmkanal, der als Ensemble bekannt ist, wird bei DAB in einem Gleichwellennetz ausgesendet. D.h., alle Sender senden auf der gleichen Frequenz die gleichen Rundfunksignale. Eine Störung untereinander findet dabei nicht statt. Damit kann das Ensemble landesweit auf ein- und derselben Frequenz empfangen werden. Die Audiodaten werden bei DAB mit einem MPEG-Encoder quellencodiert. Die subjektiv gehörte Qualität der MPEG-Codierung hängt vom einen von der Höhe der erzeugten Datenrate ab und zum anderen von der Art des Audioeingangssignals. Klassik braucht dabei eine hohe Datenrate, einfache Sprache kann ohne hörbare Qualitätseinbußen mit einer sehr niedrigen Rate codiert werden. Der MPEG-Encoder ist bei DAB derzeit fest eingestellt, so dass man z.B. als Ausgabe einen festen Bitstrom von 168 Kilobyte/Sek. für einen Audiokanal erhält. It is already known to use DAB (Digital Audio Broadcasting) Sending digital broadcast signals as To use transmission methods. A program channel that is known as an ensemble, at DAB in one Single-wave network broadcast. This means that all stations broadcast on the same frequency, the same broadcast signals. A There is no interference between them. So that can the ensemble nationwide on one and the same frequency be received. At DAB, the audio data is marked with a MPEG encoder source-coded. The subjectively heard quality The MPEG encoding depends on the amount of one generated data rate from and on the other from the type of Audio input signal. Classic needs a high one Data rate, simple speech can be heard without Loss of quality encoded at a very low rate become. The MPEG encoder is currently fixed at DAB set so that e.g. as a fixed output Bit stream of 168 kilobytes / sec. for an audio channel.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren zum Versenden von digitalen Rundfunksignalen zu schaffen, das es innerhalb eines Gleichwellennetzes ermöglicht, regional begrenzt Rundfunkprogramme auszustrahlen.The invention is therefore based on the object Process for sending digital broadcast signals too create it within a single frequency network enables, regionally limited radio programs radiate.

Vorteile der ErfindungAdvantages of the invention

Das erfindungsgemäße Verfahren zum Versenden von digitalen Rundfunksignalen mit den Merkmalen des unabhängigen Patentanspruchs hat demgegenüber den Vorteil, dass auch bei dem Betrieb eines Gleichwellennetzes dennoch regionale Rundfunkprogramme ausstrahlbar sind. Solche regionalen Rundfunkprogramme sind für die Bewohner einer Region von besonderem Interesse, da hier ihre Belange und Nachrichten über ihre Region behandelt werden.The inventive method for sending digital Broadcast signals with the characteristics of the independent Compared to this, the patent claim has the advantage that also the operation of a single-wave network is nevertheless regional Broadcast programs can be broadcast. Such regional Broadcasting programs are for residents of a region of of special interest because here their concerns and messages about their region.

Durch die in den abhängigen Ansprüchen aufgeführten Maßnahmen und Weiterbildungen sind vorteilhafte Verbesserungen des im unabhängigen Patentanspruch angegebenen Verfahrens zum Versenden von digitalen Rundfunksignalen möglich.By those listed in the dependent claims Measures and further training are advantageous Improvements in the independent claim specified procedure for sending digital Broadcast signals possible.

Besonders vorteilhaft ist, dass erfindungsgemäß die Störzonenproblematik gelöst wird, d.h. in den Übergangsbereichen zwischen den Sendezonen zweier Sender sind regional ausgestrahlte Programme von diesen beiden Sendern empfangbar, sofern beide Sender ein unterschiedliches Regionalprogramm auf der gleichen Frequenz im gleichen Subchannel ausstrahlen. Überlagern sich nun unterschiedliche regionale Rundfunkprogramme, ist es für einen Empfänger in dieser Störzone nicht möglich, ein regionales Rundfunkprogramm korrekt zu decodieren. Daher wird dann der Rundfunkempfänger auf das gleichzeitig überregional ausgestrahlte Rundfunkprogramm umschalten und dieses akustisch wiedergeben. Sind jedoch beide Sender derart beschaltet, dass sie das gleiche regionale Rundfunkprogramm ausstrahlen, dann ist es auch in dieser Übergangszone dem Rundfunkempfänger möglich, das regional ausgestrahlte Rundfunkprogramm zu decodieren.It is particularly advantageous that the Problem zone is solved, i.e. in the Transition areas between the transmission zones of two transmitters are regional programs of these two Receivable stations, provided both stations are on different regional program on the same frequency broadcast in the same subchannel. Now overlap different regional radio programs, it is for a receiver is not possible in this interference zone decode regional broadcast program correctly. Therefore then the radio receiver is on the same time switch nationally broadcast radio program and play this acoustically. However, are both transmitters wired in such a way that they are the same regional Broadcast radio program, then it is in this too Transition zone possible for the radio receiver, the regional broadcast radio program to decode.

Darüber hinaus ist es von Vorteil, dass, wenn ein regionales Rundfunkprogramm übertragen wird, dies in einem Rahmen, in dem die Rundfunksignale übertragen werden, in einem vorgegebenen Datenfeld angezeigt wird. Bei DAB ist dafür beispielsweise der Fast Information Channel (FIC) verfügbar.In addition, it is advantageous that if a regional Broadcasting program is transmitted, in a frame, in to which the broadcast signals are transmitted in one specified data field is displayed. At DAB is for that for example the Fast Information Channel (FIC) is available.

Schließlich ist es auch von Vorteil, dass sowohl ein Sender als auch ein Rundfunkempfänger vorliegen, mit denen das erfindungsgemäße Verfahren zum Versenden von digitalen Rundfunksignalen durchführbar ist.Finally, it is also beneficial to have both a transmitter as well as a radio receiver with which the Method according to the invention for sending digital Broadcast signals can be carried out.

Zeichnungdrawing

Ausführungsbeispiele der Erfindung werden in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigt

  • Figur 1 ein Blockschaltbild eines erfindungsgemäßen Senders,
  • Figur 2 ein Blockschaltbild eines erfindungsgemäßen Rundfunkempfängers,
  • Figur 3 ein Flußdiagramm des erfindungsgemäßen Verfahrens im Sender,
  • Figur 4 ein Flußdiagramm des erfindungsgemäßen Verfahrens im Empfänger,
  • Figur 5a ein temporäres Fenster,
  • Figur 5b eine schematische Darstellung der Senderausleuchtung.
    • Embodiments of the invention are shown in the drawing and explained in more detail in the following description. It shows
  • FIG. 1 shows a block diagram of a transmitter according to the invention,
  • FIG. 2 shows a block diagram of a radio receiver according to the invention,
  • FIG. 3 shows a flow chart of the method according to the invention in the transmitter,
  • FIG. 4 shows a flow diagram of the method according to the invention in the receiver,
  • FIG. 5a shows a temporary window,
  • Figure 5b is a schematic representation of the transmitter illumination.

    • Beschreibungdescription

    Rundfunkanstalten wollen auch bei digitalen Rundfunkübertragungsverfahren, wie es beispielsweise DAB ist, regionale Rundfunkprogramme ausstrahlen. Beispielsweise soll bei der Rundfunkanstalt SWR (Südwestrundfunk) ein regionales Rundfunkprogramm für Baden Württemberg und ein weiteres für Rheinland Pfalz und Saarland ausgestrahlt werden. Erfindungsgemäß wird daher die verfügbare Datenrate auf ein überregionales Rundfunkprogramm und ein regionales Rundfunkprogramm in einem Sender in einem bestimmten Zeitfenster aufgeteilt. Dies wird für ein solches temporäres Fenster durchgeführt, in dem beispielsweise lokale Nachrichten übertragen werden. Wird sowohl im überregionalen als auch im regionalen die gleiche Musik abgespielt, kann die volle Datenrate für die Musik verwendet werden. Damit ist eine Aufteilung in überregionales Rundfunkprogramm und regionales Rundfunkprogramm nicht notwendig, es muß also kein temporäres Fenster vorgesehen werden.Broadcasters also want digital Broadcasting method, such as DAB is to broadcast regional radio programs. For example should be with the broadcaster SWR (Südwestrundfunk) regional radio program for Baden Württemberg and one further broadcast for Rhineland Palatinate and Saarland become. The available data rate is therefore according to the invention to a national broadcasting program and a regional one Broadcasting program in a station in a particular Split time window. This becomes temporary for such Window carried out in, for example, local Messages are transmitted. Will be used both in the national as well as playing the same music in the regional can the full data rate can be used for the music. In order to is a division into national broadcasting programs and regional radio program not necessary, so it must no temporary window can be provided.

    Damit ist es insbesondere möglich, bei einem Gleichwellennetz regionale Rundfunkprogramme in unterschiedlichen Sendezonen zu versenden. In Übergangsbereichen zwischen den Sendezonen wird dann erfindungsgemäß im Rundfunkempfänger entschieden, ob ein regionales Rundfunkprogramm oder das gleichzeitig übertragene überregionale Rundfunkprogramm decodiert werden soll. Dies geschieht in Abhängigkeit von der Empfangsqualität des regionalen Rundfunkprogramms. Überlagern sich unterschiedliche regionale Rundfunkprogramme, dann ist ein korrekter Empfang eines regionalen Programms im allgemeinen nicht möglich. This makes it possible in particular for one Single frequency network regional radio programs in to send different transmission zones. In Transition areas between the transmission zones will then according to the invention in the radio receiver decided whether a regional radio program or at the same time transmitted national broadcasting program can be decoded should. This happens depending on the Reception quality of the regional radio program. Different regional overlap Broadcast programs, then correct reception is one regional program generally not possible.

    Ob ein regionales Rundfunkprogramm in den digitalen Rundfunksignalen übertragen wird, kann vorteilhafterweise bei einer Rahmenübertragung in einem Datenfeld des Rahmens angezeigt werden. Bei DAB ist hierfür der FIC (Fast Information Channel) geeignet.Whether a regional radio program in the digital Broadcast signals can be transmitted advantageously for a frame transmission in a data field of the frame are displayed. At DAB, the FIC (Fast Information Channel).

    In Figur 1 ist ein Blockschaltbild eines erfindungsgemäßen Senders dargestellt. Eine Datenquelle 1 ist an einen Dateneingang eines Modulators 2 angeschlossen. Der Modulator 2 ist dann an einen Eingang eines OFDM-Modulators 3 angeschlossen. Der OFDM-Modulator 3 ist über seinen Datenausgang mit einem Verstärker 4 verbunden. An den Verstärker 4 ist am Ausgang eine Antenne 5 angeschlossen.In Figure 1 is a block diagram of an inventive Transmitter shown. A data source 1 is connected to one Data input of a modulator 2 connected. The modulator 2 is then to an input of an OFDM modulator 3 connected. The OFDM modulator 3 is above its Data output connected to an amplifier 4. To the Amplifier 4 is connected to an antenna 5 at the output.

    Die Datenquelle 1 stellt die zu übertragenden Daten bereit. Dabei kann die Datenquelle 1 über ein Kommunikationsnetz mit einer Zentrale, beispielsweise einem Sendestudio verbunden sein, von der die zu übertragenden Daten kommen. Dieses Kommunikationsnetz kann über Satellit oder kabelgebunden oder über eine andere Funkverbindung realisiert sein. Die Daten werden dann an den Modulator 2 übertragen, der gemäß den Daten eine Modulation durchführt und hier insbesondere eine QPSK (Quadraturphasenumtastung), d.h. es werden hier vier unterschiedliche Winkel für die Codierung der Daten verwendet. Daraus werden dann am Ausgang des Modulators 2 Modulationssymbole, die der OFDM-Modulator 3 auf eng beieinander benachbarte Träger verteilt. Da die Träger zueinander orthogonal sind, nennt man dieses Verfahren orthogonalen Frequenzmultiplex (OFDM). Im OFDM-Modulator 3 werden die OFDM-Signale dann auf eine Sendefrequenz umgesetzt. Die OFDM-Signale werden dann einem Digital/Analog-Wandler zugeführt, um sie dann mit dem Verstärker 4 zu verstärken und der Antenne 5 zu versenden. The data source 1 provides the data to be transmitted. The data source 1 can be connected via a communication network a central office, for example a broadcast studio from which the data to be transferred come. This Communication network can be via satellite or wired or be realized via another radio connection. The Data is then transmitted to the modulator 2, which according to modulates the data, especially here a QPSK (quadrature phase shift keying), i.e. there will be here four different angles for encoding the data used. This then becomes the output of the modulator 2 Modulation symbols that the OFDM modulator 3 on closely adjacent carriers distributed. Because the carrier this process is called orthogonal to each other orthogonal frequency division multiplexing (OFDM). In the OFDM modulator 3 the OFDM signals are then on a transmission frequency implemented. The OFDM signals are then a digital / analog converter fed to the amplifier 4 to amplify and send the antenna 5.

    Die Datenquelle 1 beinhaltet einen Quellencodierer, der nun bei einem Auftreten eines regionalen Rundfunkprogrammes in einem bestimmten Zeitfenster die Decodierrate auf ein überregionales Rundfunkprogramm und das regionale Rundfunkprogramm aufteilt. Dies wird nur für eine bestimmte Zeit, also ein Zeitfenster vorgenommen, beispielsweise, wenn regionale und parallel dazu überregionale Nachrichten übertragen werden.Data source 1 includes a source encoder, which is now if a regional radio program occurs in the decoding rate to a certain time window national broadcasting program and the regional Broadcasting program divides. This is only for a specific one Time, i.e. a time window, for example if regional and parallel national news be transmitted.

    In Figur 2 ist ein Blockschaltbild eines erfindungsgemäßen Rundfunkempfängers dargestellt. Eine Antenne 6 ist ein Hochfrequenzempfänger 7 angeschlossen. Der Hochfrequenzempfänger 7 ist mit einer digitalen Prozessierungseinheit 8 verbunden. Der Ausgang der digitalen Prozessierungseinheit 8 ist an einen Audioverstärker 9 angeschlossen. Der Audioverstärker 9 betreibt einen Lautsprecher 10.In Figure 2 is a block diagram of an inventive Broadcast receiver shown. An antenna 6 is a Radio frequency receiver 7 connected. The High-frequency receiver 7 is digital Processing unit 8 connected. The output of the digital Processing unit 8 is connected to an audio amplifier 9 connected. The audio amplifier 9 operates one Speaker 10.

    Der Rundfunkempfänger empfängt mit seiner Antenne 6 die versendeten Rundfunksignale und verstärkt, filtert und setzt sie in eine Zwischenfrequenz im Hochfrequenzempfänger 7 um. Der Hochfrequenzempfänger 7 führt auch eine Analog/Digitalwandlung durch. Der so entstandene Datenstrom wird dann von der digitalen Prozessierungseinheit 8, die auch ein Prozessor sein kann, verarbeitet. Dabei werden Kanaldecodierung, Demodulation und Quellencodierung durchgeführt. Dafür ist es notwendig, dass die digitale Prozessierungseinheit 8 erkennt, ob neben dem überregionalen Rundfunkprogramm auch ein regionales Rundfunkprogramm übertragen wird. In Abhängigkeit davon führt die digitale Prozessierungseinheit 8 die Quellendecodierung durch, da ja für die parallele Übertragung von regionalen und überregionalen Rundfunkprogrammen eine unterschiedliche Datenrate für diese einzelnen Rundfunkprogramme verwendet wird, als sie für die Übertragung eines alleinigen überregionalen Rundfunkprogramms eingesetzt wird. Die so decodierten Rundfunkprogramme werden dann an den Audioverstärker 9 weitergegeben, der die Audiosignale verstärkt und mit dem Lautsprecher 10 wiedergibt.The radio receiver receives the with its antenna 6 broadcast signals and amplifies, filters and sets it into an intermediate frequency in the high-frequency receiver 7. The high-frequency receiver 7 also carries out an analog / digital conversion by. The resulting data stream is then from the digital processing unit 8, which is also a Processor can be processed. In doing so Channel decoding, demodulation and source coding carried out. For this it is necessary that the digital Processing unit 8 detects whether in addition to the national Broadcasting program also a regional broadcasting program is transmitted. Depending on this, the digital Processing unit 8 through the source decoding, since yes for the parallel transmission of regional and national radio programs a different Data rate used for these individual broadcast programs will when they are for the transfer of a sole national broadcasting program is used. The so decoded radio programs are then sent to the Audio amplifier 9 passed the audio signals amplified and reproduced with the speaker 10.

    In Figur 3 ist ein Flußdiagramm des erfindungsgemäßen Verfahrens dargestellt, das im Sender abläuft. In Verfahrensschritt 11 wird, da es ein regionales Rundfunkprogramm neben dem überregionalen Rundfunkprogramm ausgestrahlt werden soll, die Datenrate auf das regionale Rundfunkprogramm und das überregionale Rundfunkprogramm aufgeteilt. In Verfahrensschritt 12 werden nun diese beiden, das regionale und das überregionale Rundfunkprogramm, in einem Zeitmultiplex zusammengefügt, um sie dann in Verfahrensschritt 13 als digitale Rundfunksignale zu versenden. Es wird dabei eine Rahmenstruktur verwendet, bei der entweder abwechselnd regionale Rundfunkaudiodaten und überregionale Rundfunkaudiodaten übertragen werden. Es ist dabei auch eine andere Aufteilung der unterschiedlichen Rundfunkdaten möglich. In Figur 4 wird ein Flußdiagramm dargestellt, das das erfindungsgemäße Verfahren beschreibt, das im Empfänger abläuft.In Figure 3 is a flow chart of the invention Procedure shown that runs in the transmitter. In Method step 11 becomes a regional one Broadcasting program in addition to the national broadcasting program to be broadcast, the data rate on the regional Broadcasting program and the national broadcasting program divided up. In process step 12 these two the regional and national radio program, in put together in a time division multiplex to then in Method step 13 as digital radio signals to ship. A frame structure is used for of either alternating regional radio audio data and supra-regional radio audio data are transmitted. It is a different division of the different ones Broadcast data possible. In Figure 4 is a flow chart shown that describes the method according to the invention, that happens in the receiver.

    In Verfahrensschritt 14 werden die digitalen Rundfunksignale empfangen. Die digitale Prozessierungseinheit überprüft nun anhand der empfangenen Daten und zwar, ob im FIC angezeigt wird, ob ein regionales Rundfunkprogramm übertragen wird oder nicht. Ist das nicht der Fall, dann wird in Verfahrensschritt 16 das überregionale Programm decodiert. Wird jedoch ein regionales Rundfunkprogramm übertragen, dann wird in Verfahrensschritt 17 überprüft, ob die Qualität des regionalen Rundfunkprogramms in Ordnung ist, es wird also beispielsweise die Bitfehlerrate ermittelt. Liegt die Bitfehlerrate unter einem gewissen Schwellwert, liegt also eine hohe Übertragungsqualität vor, dann wird in Verfahrensschritt 18 das regionale Rundfunkprogramm decodiert. Ist die Bitfehlerrate zu hoch, dann wird in Verfahrensschritt 16 das überregionale Rundfunkprogramm decodiert. Darauf folgen dann die Audioverstärkung und die Wiedergabe mit dem Lautsprecher.In method step 14, the digital broadcast signals receive. The digital processing unit is now checking based on the data received, whether it is displayed in the FIC whether a regional radio program is being broadcast or not. If this is not the case, then in Method step 16 decodes the national program. However, if a regional radio program is broadcast, then is checked in step 17 whether the quality of the regional radio program is fine, so it will for example, the bit error rate is determined. Is that Bit error rate is below a certain threshold a high transmission quality before, then in Method step 18 the regional radio program decoded. If the bit error rate is too high, then in Method step 16 the national radio program decoded. This is followed by the audio amplification and the Play with the speaker.

    In Figur 5a wird die Aufteilung der Datenrate in einem regionalen Fenster schematisch dargestellt. Auf der Ordinate wird die Datenrate abgetragen und auf der Abszisse die Zeit. Zunächst wird ein Block mit Musik, der durch die schräge Schraffierung gekennzeichnet ist, übertragen, wobei nicht die gesamte Datenrate ausgenutzt wird. Ein Teil der Datenrate steht beispielsweise für die Übertragung von Multimediadaten, also Grafik- oder Textdaten zur Verfügung. Soll nun in einem Zeitfenster ein regionales Rundfunkprogramm übertragen werden, dann wird die Datenrate auf das regionale Rundfunkprogramm mit der waagrechten Schraffierung und das überregionale Rundfunkprogramm mit der vertikalen Schraffierung aufgeteilt. Damit können in dem regionalen Fenster sowohl das regionale Rundfunkprogramm als auch das überregionale Rundfunkprogramm empfangen werden. Nach dem regionalen Fenster wird wieder nur mit einer Datenrate Musik übertragen.FIG. 5a shows the division of the data rate into one regional window shown schematically. On the ordinate the data rate is plotted and the time on the abscissa. First, a block of music that is slanted by the Hatching is marked, transferred, but not the entire data rate is used. A part of Data rate stands for example for the transmission of Multimedia data, i.e. graphic or text data available. Should now be a regional in a time window Broadcasting program are transmitted, then the data rate on the regional radio program with the horizontal Hatching and the national broadcasting program with the split vertical hatching. So that in the regional window both the regional radio program as well the national broadcasting program can also be received. After the regional window there will be only one Transfer data rate music.

    Figur 5b zeigt eine schematische Senderausleuchtung während der Ausstrahlung des regionalen Rundfunkprogramms. In der Zone 1 wird ein erstes regionales Rundfunkprogramm ausgestrahlt, in der Zone 2 ein zweites und in der Zone 3 ein drittes regionales Rundfunkprogramm. Zwischen der Zone 1 und 2 und zwischen der Zone 2 und 3 befinden sich Störzonen. In diesen Störzonen überlagern sich zeitlich die Daten des regionalen Rundfunkprogramms aus der Zone 1 und aus der Zone 2 bzw. bis zur Zone 2 und zur Zone 3. Damit ist der Empfang von dem regionalen Rundfunkprogramm in den Störzonen jeweils nicht möglich. Daher wird dann im Rundfunkempfänger auf die Decodierung und Wiedergabe des überregionalen Rundfunkprogramms umgeschaltet. Damit ist dann die Störzonenproblematik gelöst.Figure 5b shows a schematic transmitter illumination during the broadcasting of the regional radio program. In the Zone 1 will be the first regional radio program broadcast in Zone 2 and in Zone 3 a third regional radio program. Between zone 1 and 2 and between zones 2 and 3 there are interference zones. The data of the regional radio program from zone 1 and from the zone 2 or up to Zone 2 and Zone 3. This is reception from the regional radio program in each of the interference zones not possible. Therefore, then in the radio receiver on the Decoding and playback of the supraregional Broadcasting program switched. Then that is the Problem zone problem solved.

    Claims (7)

    Verfahren zum Versenden von digitalen Rundfunksignalen, wobei die digitalen Rundfunksignale in einem Gleichwellennetz versendet werden, dadurch gekennzeichnet, dass gleichzeitig ein überregionales und ein regionales Rundfunkprogramm mit den digitalen Rundfunksignalen in einem vorgebbaren Zeitfenster von wenigstens einem Sender des Gleichwellennetzes versendet werden, wobei die verfügbare Datenrate der digitalen Rundfunksignale für das überregionale und das regionale Rundfunkprogramm jeweils aufgeteilt wird.Method for sending digital broadcast signals, wherein the digital broadcast signals are sent in a single-frequency network, characterized in that at the same time a national and regional broadcast program with the digital broadcast signals are sent in a predeterminable time window by at least one transmitter of the single-frequency network, the available data rate being the digital radio signals for the national and regional radio program is divided. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass in einer ersten Zone, in der mehr als ein regionales Rundfunkprogramm gleichzeitig empfangen wird und sich die regionalen Rundfunkprogramme gegenseitig stören, von einem Rundfunkempfänger automatisch das überregionale Rundfunkprogramm eingestellt wird.A method according to claim 1, characterized in that in a first zone, in which more than one regional radio program is received simultaneously and the regional radio programs interfere with each other, the national radio program is automatically set by a radio receiver. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass in einer zweiten Zone, in der nur ein regionales Rundfunkprogramm gesendet wird, der Rundfunkempfänger automatisch das regionale Rundfunkprogramm einstellt.A method according to claim 1, characterized in that in a second zone, in which only a regional radio program is broadcast, the radio receiver automatically sets the regional radio program. Verfahren nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die digitalen Rundfunksignale in Rahmen versendet werden, wobei in einem Datenfeld des Rahmens angezeigt wird, ob ein regionales Rundfunkprogramm versendet wird. Method according to Claim 2 or 3, characterized in that the digital radio signals are sent in frames, it being indicated in a data field of the frame whether a regional radio program is being sent. Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass im FIC (Fast Information Channel) angezeigt wird, ob ein regionales Rundfunkprogramm versendet wird.A method according to claim 4, characterized in that the FIC (Fast Information Channel) indicates whether a regional radio program is being broadcast. Sender zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Sender Mittel zur Anpassung der Datenrate für die Versendung des überregionalen und des regionalen Rundfunkprogramms und zur Einspeisung des regionalen Rundfunkprogramms aufweist.Transmitter for performing the method according to one of claims 1 to 5, characterized in that the transmitter has means for adapting the data rate for the transmission of the national and regional radio program and for feeding the regional radio program. Rundfunkempfänger zur Durchführung des Verfahrens nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass ein Prozessor (8) des Rundfunkempfängers vorgesehen ist, der die empfangenen digitalen Rundfunksignale analysiert, ob ein regionales Rundfunkprogramm versendet wird oder nicht.Radio receiver for performing the method according to one of claims 2 to 5, characterized in that a processor (8) of the radio receiver is provided, which analyzes the received digital radio signals whether a regional radio program is being broadcast or not.
    EP02006128A 2001-03-22 2002-03-19 Method for sending digital broadcast signals with transmission of supra-regional and regional broadcast programmes in a given time zone and transmission zone Withdrawn EP1244234A3 (en)

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    EP1489751A2 (en) * 2003-06-20 2004-12-22 Delphi Technologies, Inc. RF receiver and method for region specific data selection
    EP1489751A3 (en) * 2003-06-20 2005-03-02 Delphi Technologies, Inc. RF receiver and method for region specific data selection
    CN1898887B (en) * 2003-10-24 2011-01-26 高通股份有限公司 Local and Wide Area Transmission in Wireless Broadcast Networks
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    US8355354B2 (en) 2003-10-24 2013-01-15 Qualcomm Incorporated Local and wide-area transmissions in a wireless broadcast network
    US7881245B2 (en) 2003-10-24 2011-02-01 Qualcomm Incorporated Local and wide-area transmissions in a wireless broadcast network
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    AU2004307128B8 (en) * 2003-10-24 2008-05-08 Qualcomm Incorporated Local and wide-area transmissions in a wireless broadcast network
    AU2004307128C1 (en) * 2003-10-24 2008-10-09 Qualcomm Incorporated Local and wide-area transmissions in a wireless broadcast network
    WO2005043829A3 (en) * 2003-10-24 2005-08-11 Qualcomm Inc Local and wide-area transmissions in a wireless broadcast network
    US7660275B2 (en) 2003-10-24 2010-02-09 Qualcomm Incorporated Local and wide-area transmissions in a wireless broadcast network
    GB2418803B (en) * 2004-09-30 2008-02-06 Radioscape Ltd Emergency message transmitter system and related method
    WO2006035242A3 (en) * 2004-09-30 2006-06-08 Radioscape Ltd Method and system for trasmitting emergency messages into a region such as a tunnel or a bridge
    WO2006035242A2 (en) 2004-09-30 2006-04-06 Radioscape Limited Method and system for trasmitting emergency messages into a region such as a tunnel or a bridge
    US7813383B2 (en) 2005-03-10 2010-10-12 Qualcomm Incorporated Method for transmission of time division multiplexed pilot symbols to aid channel estimation, time synchronization, and AGC bootstrapping in a multicast wireless system
    WO2006099222A1 (en) * 2005-03-10 2006-09-21 Qualcomm Incorporated Timing synchronization and channel estimation at a transition between local and wide area waveforms using a designated tdm pilot
    US8432933B2 (en) 2005-03-10 2013-04-30 Qualcomm Incorporated Method for transmission of time division multiplexed pilot symbols to aid channel estimation, time synchronization, and AGC bootstrapping in a multicast wireless system
    WO2007051478A1 (en) * 2005-11-01 2007-05-10 Technische Universität Braunschweig Method for radio broadcasting a plurality of different information offers, and transmission and reception device therefor
    US7782806B2 (en) 2006-03-09 2010-08-24 Qualcomm Incorporated Timing synchronization and channel estimation at a transition between local and wide area waveforms using a designated TDM pilot
    US8644214B2 (en) 2006-03-09 2014-02-04 Qualcomm Incorporated Timing synchronization and channel estimation at a transition between local and wide area waveforms using a designated TDM pilot
    EP2120375A3 (en) * 2008-05-13 2012-10-10 Electronics and Telecommunications Research Institute Method for Providing Area-Based Broadcasting Service Using Digital Mutlimedia Broadcasting, and Apparatus and Method for Receiving Area-Based Broadcasting Service according to the same
    GB2533469A (en) * 2014-11-10 2016-06-22 Inst Für Rundfunktechnik Gmbh Transmitter for transmitting a digital transmission signal in a partial broadcast area of a broadcast area of a single-frequency network
    GB2533469B (en) * 2014-11-10 2019-01-02 Inst Rundfunktechnik Gmbh Transmitter for transmitting a digital transmission signal in a partial broadcast area of a broadcast area of a single-frequency network

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