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EP1469440A2 - Method for transmission of security information. - Google Patents

Method for transmission of security information. Download PDF

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Publication number
EP1469440A2
EP1469440A2 EP03029647A EP03029647A EP1469440A2 EP 1469440 A2 EP1469440 A2 EP 1469440A2 EP 03029647 A EP03029647 A EP 03029647A EP 03029647 A EP03029647 A EP 03029647A EP 1469440 A2 EP1469440 A2 EP 1469440A2
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EP
European Patent Office
Prior art keywords
radio
security
information
duplicates
connection
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
EP03029647A
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German (de)
French (fr)
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EP1469440B1 (en
EP1469440A3 (en
Inventor
Ulrich Sinn
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Siemens AG
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Siemens AG
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Publication of EP1469440A2 publication Critical patent/EP1469440A2/en
Publication of EP1469440A3 publication Critical patent/EP1469440A3/en
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Publication of EP1469440B1 publication Critical patent/EP1469440B1/en
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    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C2201/00Transmission systems of control signals via wireless link
    • G08C2201/60Security, fault tolerance
    • G08C2201/63Redundant transmissions

Definitions

  • the invention relates to a method for data transmission between a mobile radio transmitter and a radio receiver Machine or system. Furthermore, a radio transmitter and a radio receiver is offered to carry out the method become.
  • Radio connections also offer more time-critical transmission Information less favorable conditions than cables, because the information has a significantly longer period of time for transmission need.
  • the invention has for its object a particularly reliable Method for data transmission between a mobile Control unit radio transmitter and a radio receiver one Offer machine or system.
  • a radio transmitter is also intended and a radio receiver for performing such Procedures are offered.
  • the task is for the method by the features of the claim 1 solved.
  • Advantageous process variants will be described in subclaims 2-12.
  • For the radio transmitter is the task by claim 13 and for Radio receiver solved by claim 14.
  • the inventive method for data transmission sees one first radio connection between a radio transmitter and a Radio receiver of the machine / system for the transmission of safety-relevant Information and a second radio link for the transmission of non-security-relevant information in front.
  • two separate radio connections ensures that security-relevant information can be transmitted and no blockage or impairment a transmission channel e.g. through non-security-relevant Information can take place.
  • a separate radio connection for the transmission of safety-relevant Information will be the reliability of the Data transmission improved.
  • the first and second radio links are advantageous set up simultaneously and operated in parallel.
  • the first radio connection for the transmission of safety-relevant Information regardless of the second radio connection operated with a maximum package life.
  • the first radio connection for the transmission of safety-relevant Information synchronous to the second radio connection operated.
  • the first radio connection offers a larger number of data fields ("Slots") than for the security-relevant to be transmitted Information needed can be duplicates the security-relevant information about the first radio connection will be shipped, increasing the reliability of the Data transmission is increased again.
  • To limit the Transfer time can be the number of transfers Duplicates are specified and limited.
  • duplicates can be made as long of security-relevant information is transmitted, until new security-relevant information is available and / or until the transmitted information is received correctly were. This makes the transmission security even more improved.
  • the first and second radio connection established via a single radio system be, resulting in a cost-saving and compact design is achieved.
  • two separate radio systems can be provided, which also means Failure of a radio system, e.g. of the radio system for transmission of non-security related information, one Radio transmission of the safety-relevant information ensured is. In the event of failure of a Radio system the respective still functioning radio system Transfer the security-related information.
  • safety-relevant Information about a first radio connection after Bluetooth standard in SCO mode and the non-security relevant Information about the second radio link after Bluetooth standard transmitted in ACL mode are provided.
  • the first and the second radio connection can be made via a single one Radio system based on the Bluetooth standard, that is operated in parallel in SCO mode and in ACL mode.
  • Radio transmitter 1 for data transmission via a Radio link 2 with a radio receiver 3 with a machine / system 4 communicates. According to those described Methods for data transmission are via the radio link 2 established a first and a second radio connection.
  • each radio transmitter 1 can also act as a receiver and everyone Radio receiver 3 can also be designed as a transmitter around a bidirectional Enable communication (not shown in detail).
  • the first and second radio connection can a single radio transmitter 1 and a single radio receiver 3 (i.e. a single radio system) and can be set up via the radio link 2 security-relevant information of the Radio transmitter 1 via the first radio link 6 and non-security-relevant Information about the second radio link 7 are transmitted.
  • radio transmitter 1a and 1b shows a data transmission with separate radio transmitters 1a and 1b and separate radio receivers 3a and 3b (i.e. two separate radio systems), with radio transmitter 1a and radio receiver 3a safety-relevant information of the radio transmitter 1 and non-safety-relevant via radio transmitter 1b and radio receiver 3b Information about radio links 10 and 11 are transmitted.
  • FIG. 4 shows safety-relevant information 1 x generated on the axis 12 (time axis) over time. These are sent as duplicates 1 'on the axis 13 in the radio transmitter 1 and received by the radio receiver 3 on the axis 14. Duplicates 1 received without errors are deleted in the radio receiver 3 and the undeleted duplicates 1 are forwarded to the machine / system 4 on axis 15.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Selective Calling Equipment (AREA)

Abstract

A first radio link (6) is provided between a radio transmitter (1) and a radio receiver (3) for transfer of safety data and a second radio link (7) for transfer of non-safety data. Both links are set up and operated simultaneously. The first link is operated with a maximal packet lifetime. Duplicates of safety data are transmitted via the first link so long as they are correctly received at the receiver (3). The safety data is preferably transmitted via a SCO link using a Bluetooth standard and non-safety data via an ACL link also using a Bluetooth standard. Independent claims are also included for a radio transmitter and a radio receiver for performing data transfer.

Description

Die Erfindung betrifft ein Verfahren zur Datenübertragung zwischen einem mobilen Funksender und einem Funkempfänger einer Maschine oder Anlage. Ferner sollen ein Funksender und ein Funkempfänger zur Durchführung des Verfahrens angeboten werden.The invention relates to a method for data transmission between a mobile radio transmitter and a radio receiver Machine or system. Furthermore, a radio transmitter and a radio receiver is offered to carry out the method become.

Mobile Funksender verfügen üblicherweise über eine Sender/Empfängereinheit, arbeiten somit also mit einem physikalischen Kanal. Werden sicherheitsrelevante Informationen gemeinsam mit nicht-sicherheitsrelevanten Informationen über diesen Kanal übertragen, besteht die Gefahr, daß sicherheitsrelevante Informationen von nicht- sicherheitsrelevanten Informationen blockiert und damit verzögert übertragen werden. Funkverbindungen bieten außerdem für die Übertragung zeitkritischer Informationen ungünstigere Voraussetzungen als Kabel, da die Informationen eine deutlich größere Zeitspanne zur Übertragung benötigen.Mobile radio transmitters usually have a transmitter / receiver unit, thus work with a physical Channel. Are security-relevant information together with non-security related information about transmit this channel, there is a risk that safety-relevant Information from non-security related information blocked and thus transmitted with a delay. Radio connections also offer more time-critical transmission Information less favorable conditions than cables, because the information has a significantly longer period of time for transmission need.

Wird eine Funkverbindung zur Übertragung sicherheits-relevanter Informationen eingesetzt, ist also sicherzustellen, daß diese nicht von nicht sicherheitsrelevanten Informationen blockiert werden, eine möglichst niedrige Zeitspanne zur Übertragung benötigen und keine veralteten Informationen übertragen werden.Is a radio link for transmission more relevant to security? Information used, it must therefore be ensured that not information that is not security-relevant blocked, the shortest possible time for transmission need and do not transfer outdated information become.

Der Erfindung liegt die Aufgabe zugrunde, ein besonders zuverlässiges Verfahren zur Datenübertragung zwischen einem mobilen Bediengerät Funksender und einem Funkempfänger einer Maschine oder Anlage anzubieten. Ferner sollen ein Funksender sowie ein Funkempfänger zur Durchführung eines derartigen Verfahrens angeboten werden. The invention has for its object a particularly reliable Method for data transmission between a mobile Control unit radio transmitter and a radio receiver one Offer machine or system. A radio transmitter is also intended and a radio receiver for performing such Procedures are offered.

Die Aufgabe wird für das Verfahren durch die Merkmale des Patentanspruchs 1 gelöst. Vorteilhafte Verfahrensvarianten werden in den Unteransprüchen 2 - 12 beschrieben. Für den Funksender wird die Aufgabe durch Patentanspruch 13 und für den Funkempfänger durch Patentanspruch 14 gelöst.The task is for the method by the features of the claim 1 solved. Advantageous process variants will be described in subclaims 2-12. For the radio transmitter is the task by claim 13 and for Radio receiver solved by claim 14.

Das erfindungsgemäße Verfahren zur Datenübertragung sieht eine erste Funkverbindung zwischen einem Funksender und einem Funkempfänger der Maschine/Anlage zur Übertragung von sicherheitsrelevanten Informationen und eine zweite Funkverbindung zur Übertragung von nicht-sicherheitsrelevanten Informationen vor. Durch die Verwendung zweier separater Funkverbindungen wird sichergestellt, daß sicherheitsrelevante Informationen übertragen werden können und keine Blockade oder Beeinträchtigung eines Übertragungskanals z.B. durch nicht-sicherheitsrelevante Informationen stattfinden kann. Durch Verwendung einer separaten Funkverbindung für das Übertragen von sicherheitsrelevanten Informationen wird die Zuverlässigkeit der Datenübertragung verbessert.The inventive method for data transmission sees one first radio connection between a radio transmitter and a Radio receiver of the machine / system for the transmission of safety-relevant Information and a second radio link for the transmission of non-security-relevant information in front. By using two separate radio connections ensures that security-relevant information can be transmitted and no blockage or impairment a transmission channel e.g. through non-security-relevant Information can take place. By using a separate radio connection for the transmission of safety-relevant Information will be the reliability of the Data transmission improved.

Vorteilhafterweise werden die erste und zweite Funkverbindung simultan aufgebaut und parallel nebeneinander betrieben.The first and second radio links are advantageous set up simultaneously and operated in parallel.

Nach einer weiteren vorteilhaften Verfahrensvariante wird die erste Funkverbindung zur Übertragung von sicherheitsrelevanten Informationen unabhängig von der zweiten Funkverbindung mit einer maximalen Paketlebensdauer betrieben.According to a further advantageous process variant, the first radio connection for the transmission of safety-relevant Information regardless of the second radio connection operated with a maximum package life.

Bei einer weiteren vorteilhaften Verfahrensvariante wird die erste Funkverbindung zur Übertragung von sicherheitsrelevanten Informationen synchron zur zweiten Funkverbindung betrieben.In a further advantageous method variant, the first radio connection for the transmission of safety-relevant Information synchronous to the second radio connection operated.

Bietet die erste Funkverbindung eine größere Anzahl von Datenfeldern ("Slots") als für die zu übertragenden sicherheitsrelevanten Informationen notwendig ist, können Duplikate der sicherheitsrelevanten Informationen über die erste Funkverbindung versendet werden, wodurch die Zuverlässigkeit der Datenübertragung nochmals erhöht wird. Zur Begrenzung der Zeitdauer der Übertragung kann die Anzahl der zu übertragenden Duplikate vorgegeben und begrenzt werden.The first radio connection offers a larger number of data fields ("Slots") than for the security-relevant to be transmitted Information needed can be duplicates the security-relevant information about the first radio connection will be shipped, increasing the reliability of the Data transmission is increased again. To limit the Transfer time can be the number of transfers Duplicates are specified and limited.

Nach einer weiteren Verfahrensvariante können solange Duplikate von sicherheitsrelevanten Informationen übertragen werden, bis neue sicherheitsrelevante Informationen vorliegen und/oder bis die übertragenen Informationen korrekt empfangen wurden. Hierdurch wird die Übertragungssicherheit nochmals verbessert.According to a further process variant, duplicates can be made as long of security-relevant information is transmitted, until new security-relevant information is available and / or until the transmitted information is received correctly were. This makes the transmission security even more improved.

Im Funkempfänger fehlerfrei empfangene Duplikate von sicherheitsrelevanten Informationen werden nur ein einziges Mal weitergegeben und weiterverarbeitet. Entsprechende weitere fehlerfrei empfangene Duplikate werden vernichtet.Duplicates of security-relevant received correctly in the radio receiver Information is only used once passed on and processed. Corresponding others duplicates received without errors will be destroyed.

Gemäß einer weiteren Verfahrensvariante kann die erste und zweite Funkverbindung über ein einziges Funksystem aufgebaut werden, wodurch eine kostensparende und kompakte Ausführung erreicht wird. Gemäß einer weiteren Verfahrensvariante können zwei separate Funksysteme vorgesehen sein, wodurch auch bei Ausfall eines Funksystems, z.B. des Funksystems zur Übertragung von nicht-sicherheitsrelevanten Informationen, eine Funkübertragung der sicherheitsrelevanten Informationen sichergestellt ist. Vorteilhafterweise kann bei Ausfall eines Funksystems das jeweilige noch funktionierende Funksystem die Übertragung der sicherheitsrelevanten Informationen übernehmen.According to a further method variant, the first and second radio connection established via a single radio system be, resulting in a cost-saving and compact design is achieved. According to a further method variant, two separate radio systems can be provided, which also means Failure of a radio system, e.g. of the radio system for transmission of non-security related information, one Radio transmission of the safety-relevant information ensured is. In the event of failure of a Radio system the respective still functioning radio system Transfer the security-related information.

Gemäß einer weiteren Verfahrensvariante werden sicherheitsrelevante Informationen über eine erste Funkverbindung nach dem Bluetooth-Standard im SCO-Modus und die nicht-sicherheitsrelevanten Informationen über die zweite Funkverbindung nach Bluetooth-Standard im ACL-Modus übertragen. According to a further variant of the method, safety-relevant Information about a first radio connection after Bluetooth standard in SCO mode and the non-security relevant Information about the second radio link after Bluetooth standard transmitted in ACL mode.

Die erste und die zweite Funkverbindung können über ein einziges Funksystem nach Bluetooth-Standard aufgebaut werden, daß parallel im SCO-Modus und im ACL-Modus betrieben wird.The first and the second radio connection can be made via a single one Radio system based on the Bluetooth standard, that is operated in parallel in SCO mode and in ACL mode.

Die Erfindung ist anhand von Ausführungsbeispielen in den Zeichnungsfiguren näher erläutert. Es zeigen:

FIG 1
eine schematische Darstellung einer Datenübertragung zwischen einem Funksender und einem Funkempfänger, der mit einer Maschine/Anlage in Verbindung steht,
FIG 2
eine Datenübertragung über ein einziges Funksystem,
FIG 3
eine Datenübertragung über zwei separate Funksysteme sowie
FIG 4
eine Datenübertragung von Duplikaten von sicherheitsrelevanten Informationen.
The invention is explained in more detail using exemplary embodiments in the drawing figures. Show it:
FIG. 1
1 shows a schematic representation of a data transmission between a radio transmitter and a radio receiver, which is connected to a machine / system,
FIG 2
data transmission via a single radio system,
FIG 3
a data transmission via two separate radio systems as well
FIG 4
a data transfer of duplicates of security-relevant information.

FIG 1 zeigt einen Funksender 1 zur Datenübertragung über eine Funkstrecke 2 mit einem Funkempfänger 3, der mit einer Maschine/Anlage 4 in Verbindung steht. Gemäß den beschriebenen Verfahren zur Datenübertragung werden über die Funkstrecke 2 eine erste und eine zweite Funkverbindung aufgebaut.1 shows a radio transmitter 1 for data transmission via a Radio link 2 with a radio receiver 3 with a machine / system 4 communicates. According to those described Methods for data transmission are via the radio link 2 established a first and a second radio connection.

Generell kann jeder Funksender 1 auch als Empfänger und jeder Funkempfänger 3 auch als Sender ausgebildet sein um eine bidirektionale Kommunikation zu ermöglichen (nicht näher abgebildet).In general, each radio transmitter 1 can also act as a receiver and everyone Radio receiver 3 can also be designed as a transmitter around a bidirectional Enable communication (not shown in detail).

Nach FIG 2 können die erste und zweite Funkverbindung über ein einzigen Funksender 1 und einen einzigen Funkempfänger 3 (also ein einziges Funksystem) aufgebaut werden und können über die Funkstrecke 2 sicherheitsrelevante Informationen des Funksenders 1 über die erste Funkverbindung 6 und nicht-sicherheitsrelevante Informationen über die zweite Funkverbindung 7 übertragen werden. According to FIG 2, the first and second radio connection can a single radio transmitter 1 and a single radio receiver 3 (i.e. a single radio system) and can be set up via the radio link 2 security-relevant information of the Radio transmitter 1 via the first radio link 6 and non-security-relevant Information about the second radio link 7 are transmitted.

FIG 3 zeigt eine Datenübertragung mit separaten Funksendern 1a und 1b und separaten Funkempfängern 3a und 3b (also zwei separaten Funksystemen), wobei über Funksender 1a und Funkempfänger 3a sicherheitsrelevante Informationen des Funksenders 1 und über Funksender 1b und Funkempfänger 3b nicht-sicherheitsrelevante Informationen jeweils über Funkstrecken 10 und 11 übertragen werden.3 shows a data transmission with separate radio transmitters 1a and 1b and separate radio receivers 3a and 3b (i.e. two separate radio systems), with radio transmitter 1a and radio receiver 3a safety-relevant information of the radio transmitter 1 and non-safety-relevant via radio transmitter 1b and radio receiver 3b Information about radio links 10 and 11 are transmitted.

FIG 4 zeigt im Zeitablauf auf der Achse 12 (Zeitachse) erzeugte sicherheitsrelevante Informationen 1x. Diese werden als Duplikate l' auf der Achse 13 im Funksender 1 verschickt und vom Funkempfänger 3 auf der Achse 14 empfangen. Fehlerfrei empfangene Duplikate l werden im Funkempfänger 3 gelöscht und es werden die nicht-gelöschten Duplikate l an die Maschine/Anlage 4 auf Achse 15 weitergeleitet.FIG. 4 shows safety-relevant information 1 x generated on the axis 12 (time axis) over time. These are sent as duplicates 1 'on the axis 13 in the radio transmitter 1 and received by the radio receiver 3 on the axis 14. Duplicates 1 received without errors are deleted in the radio receiver 3 and the undeleted duplicates 1 are forwarded to the machine / system 4 on axis 15.

Claims (14)

Verfahren zur Datenübertragung zwischen einem mobilen Funksender und einem Funkempfänger einer Maschine oder Anlage, wobei eine erste Funkverbindung zwischen Funksender und einem Funkempfänger zur Übertragung von sicherheitsrelevanten Informationen und eine zweite Funkverbindung zur Übertragung von nicht-sicherheits-relevanten Informationen vorgesehen ist.Method for data transmission between a mobile Radio transmitter and a radio receiver of a machine or system, wherein a first radio connection between radio transmitter and a radio receiver for the transmission of safety-relevant Information and a second radio link for transmission provided by non-security-relevant information is. Verfahren nach Anspruch 1, wobei die erste und die zweite Funkverbindung simultan aufgebaut und betrieben werden.The method of claim 1, wherein the first and second Radio connection can be established and operated simultaneously. Verfahren nach Anspruch 1 oder 2, wobei die erste Funkverbindung mit einer maximalen Paketlebensdauer betrieben wird.The method of claim 1 or 2, wherein the first radio link operated with a maximum package life becomes. Verfahren nach Anspruch 3, wobei die erste Funkverbindung mit einer maximalen Paketlebensdauer synchron betrieben wird.The method of claim 3, wherein the first radio link operated synchronously with a maximum package life becomes. Verfahren nach einem der vorhergehenden Ansprüche, wobei über die erste Funkverbindung Duplikate von nicht-sicherheitsrelevanten Informationen übertragen werden.Method according to one of the preceding claims, wherein Duplicates of non-security-relevant over the first radio connection Information is transmitted. Verfahren nach Anspruch 4, wobei eine vorgebbare Anzahl von Duplikaten übertragen wird.The method of claim 4, wherein a predetermined number of duplicates. Verfahren nach Anspruch 4 oder 5, wobei solange Duplikate von sicherheitsrelevanten Informationen übertragen werden, bis neue sicherheitsrelevante Informationen vorliegen.A method according to claim 4 or 5, wherein as long as duplicates of security-relevant information is transmitted, until new security-relevant information is available. Verfahren nach einem der Ansprüche 4 - 6, wobei solange Duplikate von sicherheitsrelevanten Informationen übertragen werden, bis die übertragenen Informationen korrekt empfangen wurden. Method according to one of claims 4-6, wherein as long Transfer duplicates of security-related information until the transmitted information is received correctly were. Verfahren nach einem der vorhergehenden Ansprüche, wobei die erste und die zweite Funkverbindung über ein einziges Funksystem aufgebaut werden.Method according to one of the preceding claims, wherein the first and the second radio connection over a single Radio system can be built. Verfahren nach einem der vorhergehenden Ansprüche, wobei sicherheitsrelevante Informationen über die SCO-Verbindung eines Funksystems nach Bluetooth-Standard übertragen werden.Method according to one of the preceding claims, wherein Security-related information about the SCO connection of a radio system according to the Bluetooth standard. Verfahren nach einem der vorhergehenden Ansprüche, wobei nicht-sicherheitsrelevante Informationen über die ACL-Verbindung eines Funksystems nach Bluetooth-Standard übertragen werden.Method according to one of the preceding claims, wherein Non-security related information about the ACL connection a radio system according to the Bluetooth standard become. Verfahren nach Anspruch 10 und 11, wobei Informationen über eine einziges Funksystem nach Bluetooth-Standard übertragen werden.The method of claims 10 and 11, wherein information transmitted via a single radio system according to the Bluetooth standard become. Funksender zur Durchführung eines Verfahrens zur Datenübertragung nach einem der Ansprüche 1 - 12.Radio transmitter for carrying out a method for data transmission according to one of claims 1-12. Funkempfänger zur Durchführung eines Verfahrens zur Datenübertragung nach einem der Ansprüche 1 - 12.Radio receiver for carrying out a method for data transmission according to one of claims 1-12.
EP03029647.9A 2003-04-14 2003-12-22 Method for transmission of security information. Expired - Lifetime EP1469440B1 (en)

Applications Claiming Priority (2)

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DE10317131 2003-04-14
DE10317131A DE10317131A1 (en) 2003-04-14 2003-04-14 Procedure for data transmission of security-relevant information

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EP1469440A2 true EP1469440A2 (en) 2004-10-20
EP1469440A3 EP1469440A3 (en) 2007-07-04
EP1469440B1 EP1469440B1 (en) 2015-06-17

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EP1469440A3 (en) 2007-07-04

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