FR2852765A1 - Command frames transmission securing system for vehicle, has receiving station emitting two acknowledgement frames acknowledging correct reception of command frames and command correction execution in command frames - Google Patents
Command frames transmission securing system for vehicle, has receiving station emitting two acknowledgement frames acknowledging correct reception of command frames and command correction execution in command frames Download PDFInfo
- Publication number
- FR2852765A1 FR2852765A1 FR0303510A FR0303510A FR2852765A1 FR 2852765 A1 FR2852765 A1 FR 2852765A1 FR 0303510 A FR0303510 A FR 0303510A FR 0303510 A FR0303510 A FR 0303510A FR 2852765 A1 FR2852765 A1 FR 2852765A1
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- Prior art keywords
- command
- frames
- station
- frame
- command frames
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- 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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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/0315—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for using multiplexing techniques
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
Abstract
Description
II
La présente invention concerne un système de sécurisation de la transmission d'au moins certaines trames de commande émises par une station vers au moins une autre station, raccordées par un réseau multiplexé de transmission d'informations, notamment pour véhicule automobile. The present invention relates to a system for securing the transmission of at least certain control frames transmitted by a station to at least one other station, connected by a multiplexed network for transmitting information, in particular for a motor vehicle.
Les réseaux de ce type peuvent par exemple être des réseaux multiplexés de type CAN. Networks of this type can, for example, be CAN type multiplexed networks.
Ce système s'applique dans le cadre des échanges sécurisés sur les réseaux de ce type afin de garantir un certain niveau de sûreté de fonctionnement en permettant d'acquitter des messages CAN émis en diffusion afin de sé10 curiser les échanges et les rendre "point à point" entre deux calculateurs. This system applies in the context of secure exchanges on networks of this type in order to guarantee a certain level of operational safety by making it possible to acknowledge CAN messages sent in broadcast in order to secure exchanges and make them "point to point". point "between two computers.
En effet, dans de tels réseaux, il n'existe pas d'acquittement des messages "point à point" selon le protocole CAN. La diffusion des trames étant de type généralisé, tous les noeuds acquittent tous les messages. In fact, in such networks, there is no acknowledgment of "point-to-point" messages according to the CAN protocol. The diffusion of the frames being of generalized type, all the nodes acknowledge all the messages.
Par conséquent, il n'existe pas de processus de vérification de la 15 bonne réception d'un message entre deux noeuds. Consequently, there is no process for verifying that a message has been received correctly between two nodes.
Le but de l'invention est donc de résoudre ces problèmes. The object of the invention is therefore to solve these problems.
A cet effet, l'invention a pour objet un système de sécurisation de la transmission d'au moins certaines trames de commande émises par une station vers au moins une autre station, raccordées par un réseau multiplexé de trans20 mission d'informations, notamment de véhicule automobile, caractérisé en ce qu'en réponse à la réception de cette trame de commande, la station de réception émet à destination de la station d'émission, une première trame d'acquittement de bonne réception de la trame de commande et une seconde trame d'acquittement de bonne exécution de la commande contenue dans la trame de 25 commande. To this end, the subject of the invention is a system for securing the transmission of at least certain control frames transmitted by a station to at least one other station, connected by a multiplexed network for transmitting information, in particular of motor vehicle, characterized in that in response to the reception of this control frame, the reception station transmits to the transmission station, a first acknowledgment frame of good reception of the control frame and a second acknowledgment frame for successful execution of the command contained in the command frame.
Suivant une autre caractéristique: - en cas de non réception d'une trame d'acquittement, la station d'émission est adaptée pour émettre à nouveau la trame de commande. According to another characteristic: - in the event of non-reception of an acknowledgment frame, the transmitting station is adapted to re-transmit the control frame.
L'invention sera mieux comprise à la lecture de la description qui va 30 suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins annexés, sur lesquels: - la Fig.1 représente la structure générale d'un réseau multiplexé de transmission d'informations; et - la Fig.2 illustre le fonctionnement d'un système de sécurisation selon l'invention. The invention will be better understood on reading the description which will follow, given solely by way of example and made with reference to the appended drawings, in which: - Fig.1 represents the general structure of a multiplex network information transmission; and - Fig.2 illustrates the operation of a security system according to the invention.
On a en effet illustré sur la figure 1, un système de transmission d'informations entre deux stations raccordées par un réseau multiplexé de transmis5 sion d'informations. FIG. 1 has in fact illustrated a system for transmitting information between two stations connected by a multiplexed network for transmitting information.
Sur cette figure, le réseau multiplexé de transmission d'informations est désigné par la référence générale 1, tandis que les stations sont désignées par les références générales 2 et 3. In this figure, the multiplexed information transmission network is designated by the general reference 1, while the stations are designated by the general references 2 and 3.
Ces stations échangent des informations par l'intermédiaire de trames 10 de communication, telles que par exemple des trames de commande émises par l'une des stations vers l'autre station. These stations exchange information via communication frames, such as, for example, control frames sent by one of the stations to the other station.
Une telle trame de communication est désignée par la référence générale 4 sur la figure 2 et est par exemple émise par la station 2 à destination de la station 3. Such a communication frame is designated by the general reference 4 in FIG. 2 and is for example sent by the station 2 to the station 3.
En plus de l'acquittement de protocole mis en oeuvre dans ce type de réseau, dans le système de sécurisation selon l'invention, la station de réception, c'est-à-dire par exemple la station 3, émet à destination de la station d'émission, c'est-à-dire par exemple la station 2, une première trame d'acquittement de bonne réception de la trame de commande, cette première trame étant désignée 20 par la référence générale 5 sur cette figure, ce qui permet à la station d'émission de savoir que la station de réception a bien reçu la trame de commande et une seconde trame d'acquittement de bonne exécution de la commande contenue dans la trame de commande, désignée par la référence générale 6 sur cette figure 2, ce qui permet à la station d'émission de constater que la commande a 25 bien été exécutée. In addition to the acknowledgment of the protocol implemented in this type of network, in the security system according to the invention, the receiving station, that is to say for example station 3, transmits to the transmitting station, that is to say for example station 2, a first acknowledgment frame for good reception of the control frame, this first frame being designated by the general reference 5 in this figure, which allows the transmitting station to know that the receiving station has received the control frame and a second acknowledgment frame for successful execution of the command contained in the control frame, designated by the general reference 6 in this figure 2, which allows the transmitting station to note that the command has been successfully executed.
Bien entendu, et de façon classique en cas de non réception de trame d'acquittement, la station d'émission est adaptée pour émettre à nouveau la trame de commande. Of course, and conventionally in the event of non-receipt of an acknowledgment frame, the transmitting station is adapted to re-transmit the control frame.
On conçoit alors que dans le système de sécurisation selon l'invention, 30 le principe de la sécurisation est basé sur l'émission et la réception de deux types d'acquittement spécifiques entre deux noeuds connectés au réseau, par exemple CAN. Le premier type d'acquittement est un acquittement de réception qui valide la bonne réception d'un message en plus de l'acquittement de transmission du protocole. It can therefore be seen that in the security system according to the invention, the security principle is based on the transmission and reception of two specific types of acknowledgment between two nodes connected to the network, for example CAN. The first type of acknowledgment is an acknowledgment of receipt which validates the good reception of a message in addition to the acknowledgment of transmission of the protocol.
La station d'émission a alors confirmation par la station de réception que celle-ci a bien reçu un message. The transmitting station then has confirmation by the receiving station that the latter has indeed received a message.
Ce message d'acquittement de réception est une trame ayant un identificateur bien spécifique respectant l'adressage défini dans les règles d'adres5 sage. This reception acknowledgment message is a frame having a very specific identifier respecting the addressing defined in the addressing rules.
C'est un message qui n'est géré que par le serveur de communication. It is a message that is only managed by the communication server.
Le deuxième type d'acquittement est un acquittement applicatif qui valide la bonne prise en compte d'un message. Il permet à la station d'émission de vérifier l'exécution d'une commande par la station de réception. Audelà de l'ac10 quittement de transmission du protocole, l'applicatif de la station d'émission doit avoir confirmation de la station de réception de la bonne exécution de la commande. The second type of acknowledgment is an application acknowledgment which validates the correct consideration of a message. It allows the transmitting station to verify the execution of a command by the receiving station. Beyond the acknowledgment of transmission of the protocol, the application of the transmitting station must have confirmation from the receiving station of the proper execution of the command.
Le message d'acquittement applicatif est un message de type fonctionnel dont le contenu est propre à chaque organe. The application acknowledgment message is a functional type message whose content is specific to each organ.
En fonction du niveau de sécurité souhaité sur les échanges, ce message peut être par exemple une trame de confirmation ou l'état d'activation de tel ou tel actionneur de la station de réception, etc... Depending on the level of security desired on the exchanges, this message can for example be a confirmation frame or the activation state of such or such an actuator of the reception station, etc.
On conçoit donc que ceci permet d'assurer la sécurisation de la transmission des trames en particulier de commande sur le réseau. 20 It is therefore understandable that this makes it possible to secure the transmission of frames, in particular control frames on the network. 20
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0303510A FR2852765B1 (en) | 2003-03-21 | 2003-03-21 | SYSTEM FOR SECURING THE TRANSMISSION OF AT LEAST CERTAIN CONTROL FRAMES ON A MULTIPLEX INFORMATION TRANSMISSION NETWORK |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0303510A FR2852765B1 (en) | 2003-03-21 | 2003-03-21 | SYSTEM FOR SECURING THE TRANSMISSION OF AT LEAST CERTAIN CONTROL FRAMES ON A MULTIPLEX INFORMATION TRANSMISSION NETWORK |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2852765A1 true FR2852765A1 (en) | 2004-09-24 |
| FR2852765B1 FR2852765B1 (en) | 2005-06-24 |
Family
ID=32922368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR0303510A Expired - Fee Related FR2852765B1 (en) | 2003-03-21 | 2003-03-21 | SYSTEM FOR SECURING THE TRANSMISSION OF AT LEAST CERTAIN CONTROL FRAMES ON A MULTIPLEX INFORMATION TRANSMISSION NETWORK |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2852765B1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5448561A (en) * | 1991-09-19 | 1995-09-05 | Robert Bosch Gmbh | Method & apparatus for data exchange in data processing installations |
| US5696904A (en) * | 1993-02-15 | 1997-12-09 | Honda Giken Kogyo Kabushiki Kaisha | Data transmission method and system therefor |
| EP0949567A2 (en) * | 1998-04-09 | 1999-10-13 | Siemens Aktiengesellschaft | Multiprocessor system and method for processing tasks in a multiprocessor system |
-
2003
- 2003-03-21 FR FR0303510A patent/FR2852765B1/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5448561A (en) * | 1991-09-19 | 1995-09-05 | Robert Bosch Gmbh | Method & apparatus for data exchange in data processing installations |
| US5696904A (en) * | 1993-02-15 | 1997-12-09 | Honda Giken Kogyo Kabushiki Kaisha | Data transmission method and system therefor |
| EP0949567A2 (en) * | 1998-04-09 | 1999-10-13 | Siemens Aktiengesellschaft | Multiprocessor system and method for processing tasks in a multiprocessor system |
Non-Patent Citations (2)
| Title |
|---|
| KIENCKE U ET AL: "AUTOMOTIVE SERIAL CONTROLLER AREA NETWORK", SAE TECHNICAL PAPER SERIES, SOCIETY OF AUTOMOTIVE ENGINEERS, WARRENDALE, PA, US, February 1986 (1986-02-01), pages 1 - 6, XP000811105, ISSN: 0148-7191 * |
| NAVET N: "Controller area network - CANs use within automobiles", IEEE POTENTIALS, IEEE, NEW YORK, NY, US, October 1998 (1998-10-01), pages 12 - 14, XP002172000, ISSN: 0278-6648 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2852765B1 (en) | 2005-06-24 |
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| ST | Notification of lapse |
Effective date: 20131129 |