WO2008077721A2 - Procédé de transmission de données d'application par un support de communication d'un système de communication, dispositif d'abonné d'un système de communication et système de communication - Google Patents

Procédé de transmission de données d'application par un support de communication d'un système de communication, dispositif d'abonné d'un système de communication et système de communication Download PDF

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Publication number
WO2008077721A2
WO2008077721A2 PCT/EP2007/063200 EP2007063200W WO2008077721A2 WO 2008077721 A2 WO2008077721 A2 WO 2008077721A2 EP 2007063200 W EP2007063200 W EP 2007063200W WO 2008077721 A2 WO2008077721 A2 WO 2008077721A2
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WO
WIPO (PCT)
Prior art keywords
data
subscriber
communication system
transmitting
channel
Prior art date
Application number
PCT/EP2007/063200
Other languages
German (de)
English (en)
Other versions
WO2008077721A3 (fr
Inventor
Axel Aue
Josef Newald
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2008077721A2 publication Critical patent/WO2008077721A2/fr
Publication of WO2008077721A3 publication Critical patent/WO2008077721A3/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40006—Architecture of a communication node
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40169—Flexible bus arrangements
    • H04L12/40176—Flexible bus arrangements involving redundancy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/407—Bus networks with decentralised control
    • H04L12/417—Bus networks with decentralised control with deterministic access, e.g. token passing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L2012/40267—Bus for use in transportation systems
    • H04L2012/40273—Bus for use in transportation systems the transportation system being a vehicle

Definitions

  • the present invention relates to a subscriber of a communication system comprising a communication medium to which the subscriber is connected, and at least one further subscriber connected to the communication medium according to the preamble of claim 1.
  • the invention also relates to a communication system comprising a communication medium and a plurality of subscribers connected thereto Finally, the present invention also relates to a method for transmitting application data via a communication medium of a communication system according to the preamble of patent claim 13.
  • FlexRay An example of a communication system of the type mentioned is the known from the prior art FlexRay communication system, which in particular has two separate channels for data transmission. Of course, there are a variety of other communication systems, which also have several separate channels for data transmission.
  • FlexRay In a FlexRay communication system, the communication media traffic, access and receive mechanisms, and error handling are controlled through the FlexRay protocol, which is currently based on the FlexRay protocol specification v2.1. FlexRay is a fast, deterministic and fault-tolerant bus system, especially for use in one Motor vehicle.
  • the FlexRay protocol operates according to the Time Division Multiple Access (TDMA) method, whereby the subscribers (also referred to as nodes or components) or the messages to be transmitted are assigned fixed time slots in which they have exclusive access to the communication medium , The time slots are repeated in a defined communication cycle, so that the time at which a message is transmitted via the communication medium can be accurately predicted and the bus access is deterministic.
  • TDMA Time Division Multiple Access
  • FlexRay divides the cycle into a static and a dynamic part.
  • the static part at the beginning of a bus cycle contains fixed time slots.
  • the time slots are allocated dynamically.
  • the exclusive bus access is only possible for a short time, for the duration of a so-called minislot. Only if a bus access occurs within a minislot, the time slot is extended by the required time. Thus, bandwidth is only consumed when it is actually needed.
  • FlexRay has two separate channels for data transmission. FlexRay communicates via one or two physically separate lines per channel at a maximum data rate of 10 Mbi1 / sec. Of course, FlexRay can also be operated at lower data rates.
  • the lines of the two channels correspond to the physical layer, in particular the so-called OSI (Open System Architecture) layer model. It is envisaged to use the two channels for redundant and thus fault-tolerant transmission of messages, in which case at the same time the same data is transmitted via both channels. Alternatively, different messages can be transmitted via the two channels, which could then double the data rate in the FlexRay communication system. It is also conceivable that the signal transmitted via the connecting lines results from the difference of signals transmitted via the two lines.
  • OSI Open System Architecture
  • Synchronization messages are transmitted in the static part of the cycle for the synchronization of local clocks of the nodes, whereby the local clock times of the nodes are corrected by means of a special algorithm according to the FlexRay specification so that all local clocks synchronize to one global clock.
  • a FlexRay device contains a participant processor, a FlexRay communication controller and, in the case of bus monitoring, a so-called Bus Guardian.
  • the subscriber processor delivers and processes the data that is transmitted via the communication controller.
  • Messages or messages with, for example, up to 254 data bytes can be configured for communication in a Flex Ray network.
  • application data is transmitted between the subscribers via the communication medium during the intended use of the communication system.
  • the data is transmitted in messages or messages in certain time slots in repetitive communication cycles.
  • Examples of such application data are, for example, measurement data of sensors (accelerator pedal position, transverse and longitudinal acceleration in the motor vehicle, vehicle speed etc.) and actuation data for actuators (for example brake pressure of an electrically controlled brake system, speed of an automatic transmission, assistance torque of a power steering system with adaptive torque assistance, Angular position of an adaptive cornering light, etc.).
  • the application data is thus transmitted to ensure proper operation of the unit (the motor vehicle, the building, the Machine tool, etc.) or to ensure a partial function of the unit in which the communication system is installed.
  • the communication system before the communication system can be used in normal operation, it must be adapted to the special application environment in the unit in which it is installed during an application phase (so-called calibration).
  • the application phase the communication system or the participants of the communication system to the specific network topology, the number and type of participants used, features of data transmission (length of the messages, data transfer rate used, channels used for data transmission, etc.) and especially adapted to other peculiarities of the specific application environment.
  • the software in the communication system or in the participants is adapted, the interference radiation can be determined and, for example, E MV measurements can be carried out.
  • application data additional internal data
  • application data are thus data which are transmitted, for example, during the modification of a program or data (so-called flashing) or during EMC measurements.
  • flashing additional internal data
  • the application data thus allow a change of programs and / or data or parts thereof and an evaluation of the E MV measurement process.
  • an external tester unit is connected to the FlexRay communication medium by means of suitable hardware.
  • the tester unit receives the additionally transmitted internal data and uses it for monitoring the operation of software in the communication system or in the participants or for troubleshooting in the software.
  • the tester unit can also generate drive signals for the communication system or for the subscribers of the communication system and transmit these as additional internal data to be transmitted to the subscribers.
  • the software used can be parameterized. and adapted to the specific application environment.
  • the at least one transceiver unit of the subscriber is designed such that it has one of the channels for transmitting and / or receiving first data and another channel for transmitting and / or receiving second data, the first and second data being different at the same time.
  • a communication system according to the preamble of claim 11 is proposed, wherein the communication system is designed such that it uses one of the channels for transmitting first data and another channel for transmitting second data, wherein the first and the second data considered at the same time are different.
  • application data be transmitted via a first of the channels of the communication medium and application data via a different channel.
  • Claims 2-5 relate to an embodiment in which the subscriber according to the invention acts as a gateway for receiving data via one of the channels of a first subscriber and for forwarding the received data to a second subscriber via a different channel is formed.
  • the received data can be processed, in particular amplified, prior to forwarding in the subscriber according to the invention.
  • the subscriber For receiving the data from the first subscriber and for sending the data to the second subscriber, the subscriber has two separate transceiver units, one of the units for receiving the data via the one channel and the other transceiver unit to send or forward the data over the other channel.
  • the data received by the subscriber according to the invention via the first channel and the data transmitted by the subscriber via the other channel differ at least in that they are offset in time from one another. This is due, in particular, to the fact that for the reception of the data in the subscriber on the one channel, for the preparation of the data for transmission over the other channel and for the transmission of the received data over the other channel, a certain processing time is required a delay of the transmitted data leads. If additionally processing of the received data is provided in the subscriber according to the invention, a further delay of the transmitted data due to the processing time may result.
  • the processed transmitted data can also differ in terms of their amplitude or even content of the received data.
  • Claims 6 - 10 relate to an embodiment, according to which application data is transmitted via one of the channels and application data is transmitted via another channel.
  • This embodiment is used in particular during the application phase of the communication system.
  • simply another, free channel ie a channel of the channel not used for the transmission of application data, is used for the transmission of the application data.
  • the transmission during the application phase is simply limited to one channel, so that another, now free channel can be used for the transmission of the application data. This is easily possible, since the redundant data transmission, in particular with regard to the intended use in safety-relevant systems (eg x-by-wire system in a motor vehicle) brings advantages in terms of safety and availability.
  • the application data are, for example, data for measuring certain states of systems (eg x-by-wire systems) or subsystems (eg sensors or actuators) of the unit (eg a motor vehicle) in which the communication system is used, which during normal operation of the communication system are not transmitted and are used only for the application of the communication system.
  • the measurement data can be transmitted, for example, via the free channel from the subscriber according to the invention to an external tester unit connected to the communication medium.
  • the free channel can also be used for transferring revised software versions (so-called updates), preferably from an external tester unit to the subscriber according to the invention, for storage in a memory element of the subscriber. This process is also called flashing.
  • revision software versions preferably from an external tester unit to the subscriber according to the invention, for storage in a memory element of the subscriber. This process is also called flashing.
  • FIG. 1 shows a communication system according to the invention according to a first preferred embodiment
  • Figure 2 shows a communication system according to the invention according to a second preferred embodiment
  • FIG. 3 shows a communication system according to the invention according to a third preferred embodiment, in which a subscriber is connected to the communication medium via a communication module;
  • FIG. 4 shows a communication module for connecting a subscriber of
  • Figure 5 shows the communication module of Figure 4 in detail.
  • a communication system according to the invention is designated in its entirety by the reference numeral 1.
  • the communication system 1 comprises a communication medium 2, which has two connection lines 2a for data transmission via a first channel A and, separately, two further connection lines 2b for data transmission via a second channel B.
  • the communication medium 2 instead of wired as a radio link or an infrared or otherwise formed.
  • the communication system 1 also comprises a plurality of subscribers 3, of which four subscribers 3a, 3b, 3c, 3d are shown in FIG. 1 and which are connected to the communication medium 2.
  • the subscriber 3c is a subscriber according to the invention who is designated "DUT" (device under test, FIG.
  • the participant 3d is a tester unit which, for example, is connected to the communication medium 2 during an application phase and thus is part of the communication system 1. During normal operation of the communication system, the tester unit 3d is usually no longer connected to the communication medium 2. The tester unit 3d is designated in FIG. 1 with a "calibration tool". The subscribers 3a, 3b are so-called further subscribers, which are also connected to the communication medium 2 and thus are part of the communication system 1.
  • the participants 3a and 3b can theoretically be designed as participants according to the invention and have a corresponding functionality.
  • the subscribers 3a, 3b, 3c, 3d each comprise at least one microcontroller 4 and at least one communication controller 5.
  • the communication controller 5 of each subscriber 3a, 3b, 3c, 3d comprises a first transceiver unit 6 (so-called transceiver Xcvr) for one first channel A and a second transmission
  • Transceiver Xcvr for another channel B.
  • transceiver Xcvr for another channel B.
  • the transceiver for the first channel A and the second channel B can be used.
  • all participants 3a, 3b, 3c, 3d are connected to both channels A, B of the communication medium 2.
  • the subscribers 3a, 3b and 3c are connected to both channels A, B via the transceivers 6, 7 of the communications controller 5.
  • the tester unit 3d is connected via its transmitting / receiving unit 7 only to the second channel B of the communication medium 2.
  • the subscribers 3a, 3b and 3c are subscriber nodes of the communication network 1, which exchange application data with one another in the normal operation of the network 1 via the communication medium 2.
  • the Proper operation of the communication system 1 requires lengthy design, development, implementation and application phases.
  • the completely established communication network 1 is operated under conditions that are as close to reality as possible and adapted (applied) to the given application environment.
  • the tester unit 3d is connected to the communication medium 2.
  • the subscribers 3a, 3b, 3c exchange so-called application data with one another and in particular with the tester unit 3d in addition to the application data.
  • Application data are those data which are transmitted exclusively during the application phase and are used for application of the communication system 1.
  • Application data are in particular measurement data which state the states of the subscribers 3a, 3b, 3c or of functional units connected thereto. These measurement data are preferably transmitted from the participants 3a, 3b and / or 3c to the tester unit 3d. This then uses the measurement data to determine the current status of the system, the units or partial functionalities of the units. Furthermore, application data also includes supplemented and / or revised computer programs or parts thereof (so-called software updates) which are preferably transmitted from the tester unit 3d to the users 3a, 3b and / or 3c and stored there in a memory element (so-called flashing ).
  • application data be transmitted via one of the channels of the communication medium 2, in the exemplary embodiment of FIG. 1 via the channel A, as is the case during the intended operation of the communication system 1.
  • application data transmitted.
  • This has the advantage that the application data can be exchanged over the channel A of the communication medium 2 even in the application phase without impairment between the participants 3a, 3b, 3c. Since the application data are transmitted via a separate other channel B, the bus load (channel A for the application data) is not changed by the application.
  • the communication system 1 is preferably designed as a FlexRay communication system in which data is transmitted in accordance with the FlexRay specification.
  • the invention can also be implemented in any other communication system which provides at least two separate channels for data transmission.
  • the same components with the same reference numerals as in Figure 1 are designated.
  • the participants 3a, 3b are identically formed as in FIG. 1.
  • the participant (DUT, device under test) is now designated by the reference numeral 3e and differs from the participant 3c from FIG. 1 in that the participant 3e operates as a gateway for forwarding data over the other channel B and is designed accordingly.
  • the application phase, but the intended operation of the communication system 1 is no longer considered.
  • the users 3a, 3b, 3e exchange application data with each other via the first channel A of the communication medium 2 quite normally.
  • the application data transmitted via the channel A are not transmitted directly to the subscriber 3f, but only indirectly via the subscriber 3e according to the invention.
  • the subscriber 3e For forwarding the data transmitted to the subscriber 3f via the channel A, the subscriber 3e according to the invention does not use the channel A, but another free, separate channel B of the communication medium 2.
  • This embodiment makes sense, for example, for application data over long distances to the subscriber 3f transferred to.
  • Data which are transmitted via the first channel A of the communication medium 2 are thus received by the transceiver 6e for the channel A, forwarded to the transceiver 7e for the channel B and then transmitted by the transceiver 7e via the Lines 2b of the channel B of the communication medium 2 transmitted to the subscriber 3f. There they are received by the transceiver 7f for the channel B and supplied to a further processing in the subscriber 3f or in a unit connected thereto (not shown).
  • the received data in the subscriber 3e can still be processed, if desired.
  • the processing of the received data comprises in particular amplifying the received data, so that they can be transmitted via the channel B again over a relatively large distance up to the subscriber 3f.
  • FIG. 3 shows a further embodiment of the invention, which is essentially based on the embodiment from FIG. Identical components are again denoted by the same reference numerals.
  • the subscriber 3e is not connected directly but indirectly via a communication module 10 to the communication medium 2, that is to say to the physical layer of the communication system 1. Structure and function of the communication module 10 are described in detail in DE 10 2005 048584.
  • the communication module 10 provides the basis for a particular implementation of a communication controller in hardware.
  • the advantage of using a communication module 10 in connection with the present invention is the ability of the module 10 to the same data with multiple buffers (so-called buffers) use.
  • the communication module 10 can forward data received on a channel A at a specific time, that is to say in a specific time slot, on another channel B and at another time, that is to say in a different time slot.
  • An example of a FlexRay communication module 10 is shown in FIG.
  • the FlexRay communication module 10 is connected via a connection 17 to the subscriber or subscriber processor 3e and via a connection 16 with the Communication medium 2 connected.
  • a connection 17 to the subscriber or subscriber processor 3e and via a connection 16 with the Communication medium 2 connected.
  • a first arrangement 15 is used for storing, in particular clipboard, at least part of the messages to be transmitted.
  • a second arrangement 14 is connected via the connections 17 and 18.
  • a third arrangement 13 connected via the connections 16 and 19, whereby a very flexible inputting and outputting of data as part of messages, in particular FlexRay messages in or out of the first arrangement 15 with Ensuring data integrity at optimal speed is achievable.
  • the communication module 10 is shown in a preferred embodiment in detail. Also shown in detail are the respective connections 16 to 19.
  • the second arrangement 14 contains an input buffer memory or input buffer memory 21 (input buffer IBF), an output buffer memory or output buffer memory 22 (output buffer OBF) as well as an interface component consisting of two parts 23 and 24, wherein one sub-module 23 is subscriber-independent and the second sub-module 24 is subscriber-specific.
  • the subscriber-specific sub-module 24 (Customer CPU Interface CIF) connects a subscriber-specific host CPU 3e, that is to say a customer-specific subscriber, to the FlexRay communications module 10.
  • a bidirectional data line 36, an address line 37 and a control input 38 are provided.
  • the subscriber-specific sub-module 24 is connected to a subscriber-independent sub-module 23 (generic CPU interface, GIF), ie the FlexRay communications module 10, which is also referred to as a FlexRay IP module, has a generic, that is general, CPU interface to which There are a large number of different customer-specific host CPUs 3e via corresponding subscriber-specific sub-modules 24, that is to say customer CPU interfaces CIF connect. As a result, depending on the subscriber 3e only the sub-module 24 must be varied, which means a significantly lower cost.
  • the input buffer or input buffer 21 and the output buffer or output buffer 22 may be in one
  • the input buffer memory 21 is used for the intermediate storage of messages for transmission to the message memory 20.
  • the input buffer component is preferably designed such that it contains two complete messages each comprising a header segment or header segment, in particular
  • the input buffer memory is formed in two parts (partial buffer memory and shadow memory), whereby the transmission between subscriber CPU 3e and message memory 20 can be accelerated by alternately writing the two parts of the input buffer memory 21 or by changing access.
  • the output buffer or output buffer memory 22 serves for the buffering of messages for the transmission from the message memory 20 to the subscriber CPU 3e.
  • the output buffer 22 is designed so that two complete messages consisting of header segment, in particular with configuration data and data segment, ie payload segment, can be stored.
  • the output buffer memory 22 is divided into two parts, a partial buffer memory and a shadow memory, whereby the transmission or access change between the subscriber or host CPU 3e and message memory 20 can be accelerated here by alternately reading the two parts ,
  • This second arrangement 14 consisting of the blocks 21 to 24 is connected to the first arrangement 15 as shown.
  • the arrangement 15 consists of a message handler 20 (message handler MHD) and a message memory 30 (message RAM).
  • the message manager 20 controls the data transfer between the input buffer 21 and the output buffer 22 and the message memory 30. Likewise, it controls the data transfer in the other direction via the third Arrangement 13.
  • the message memory 30 is preferably designed as a single-ported RAM. This RAM memory stores the messages or embassy objects, ie the actual data, together with configuration and status data. The exact structure of the message memory 30 is described in more detail in FIG. 3 of DE 10 2005 048 584 and the associated description of the figures. The statements made there are expressly referred to.
  • the third arrangement 13 consists of the blocks 25 to 28. According to the two channels A, B of the FlexRay Physical Layer, this arrangement 13 is divided into two data paths, each with two data directions. This is illustrated by connections 33 and 34, which show the two data directions for channel A, RxA and TxA for receive (RxA) and transmit (TxA) as well as for channel B, RxB and TxB. Connection 35 is an optional bidirectional control input.
  • the connection of the third arrangement 13 takes place via a first buffer memory 25 for channel B and a second buffer memory 26 for channel A. These two buffer memories 25, 26 (transient buffer RAMs: RAM A and RAM B) serve as buffer for the data transmission from or to the first arrangement 15.
  • these two buffer memories 25 and 26 are each connected to an interface module 27 and 28 which comprise the FlexRay protocol controller or bus protocol controller consisting of a transmit / receive shift register and a FlexRay protocol Finite state machine included.
  • the two buffer memory 25 and 26 thus serve as a buffer for the data transfer between the shift registers of the interface modules or FlexRay protocol controller 27 and 28 and the message memory 30.
  • the data fields, ie the payload segment or data segment stored in two FlexRay messages are advantageously by each buffer memory 25 or 26, the data fields, ie the payload segment or data segment stored in two FlexRay messages.
  • a global time unit (Global Time Unit GTU), which is responsible for the representation of the global time grid in FlexRay, ie the microtick ⁇ T and the macrotick MT.
  • GTU Global Time Unit
  • Block 30 depicts the General System Control (SUC) that controls and controls the operating modes of the FlexRay communications controller. These include wakeup, startup, reintegration or integration, normal surgery and passive surgery.
  • Block 31 shows the network and error management (Network and Error Management NEM) as described in the FlexRay protocol specification.
  • block 32 shows the interrupt control (INT) which manages the status and error interrupt flags and controls the interrupt outputs 39 to the subscriber CPU 3e.
  • the block 32 also includes an absolute timer and a timer for generating the time interrupts or timer interrupts.
  • message objects or messages can be configured with up to 254 data bytes.
  • the message memory 30 is in particular a message RAM (Message RAM), which e.g. can store up to a maximum of 128 message objects. All functions that affect the handling or management of the messages themselves are implemented by the message handler or message handler 20. These are e.g. the
  • the message handler 20 is also responsible for the transfer of data arriving on a channel A from the communication controller 27 to the communication controller 28 so that the latter can forward the data to the subscriber 3f via the channel B.
  • An external CPU that is to say an external processor of the subscriber processor 3e, can access the registers of the FlexRay communication module 10 directly via the subscriber interface with the subscriber-specific part 24.
  • registers There will be a variety used by registers. These registers are used to connect the FlexRay protocol controllers, ie the interface modules 27 and 28, the message handler (MHD) 20, the global time unit GTU 29, the general system controller (SUC) 30, the Network and Error Management Unit (NEM) 31, the interrupt controller (INT) 32 and the access to the message RAM, so the message memory 30 to configure and control and also to display the corresponding status.
  • MHD message handler
  • GTU global time unit
  • SUC general system controller
  • NEM Network and Error Management Unit
  • INT interrupt controller
  • the communication module 10 also for the connection of other participants of the communication system 1 to the communication medium 2, for example, the participants 3a; 3b; 3c, or even the tester 3d (see Figure 1) are used.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Telephonic Communication Services (AREA)
  • Communication Control (AREA)

Abstract

La présente invention concerne un dispositif d'abonné (3c; 3e) d'un système de communication (1) comprenant un support de communication (2a, 2b) auquel est raccordé le dispositif d'abonné (3c; 3e), et au moins un autre dispositif d'abonné (3a, 3b, 3d, 3f) raccordé au support de communication (2a, 2b). Le système de communication (1) est conçu pour transmettre des données entre les dispositifs d'abonné (3a, 3b, 3c, 3d, 3e, 3f) par le support de communication (2a, 2b). Le dispositif d'abonné (3c; 3e) présente au moins une unité d'émission/réception (6c, 7c; 6e, 7e) destinée à émettre / recevoir des données par l'intermédiaire du support de communication (2a, 2b) via au moins deux canaux (A, B) séparés. Pour alléger et accélérer la transmission de données d'application dans une phase d'application du système de communication (1), en particulier sans que la transmission de données en elle-même entre les dispositifs d'abonné (3a, 3b, 3c, 3d, 3e, 3f) soit influencée par l'application, l'unité ou les unités d'émission / réception (6c, 7c; 6e, 7e) du dispositif d'abonné (3c; 3e) est/sont conçue(s) de sorte qu'elle(s) se sert/servent de l'un des canaux (A) pour l'émission et/ou la réception de premières données et d'un autre canal (B) pour l'émission et/ou la réception de deuxièmes données, les premières et les deuxièmes données étant différentes lorsqu'elles sont considérées au même instant.
PCT/EP2007/063200 2006-12-22 2007-12-03 Procédé de transmission de données d'application par un support de communication d'un système de communication, dispositif d'abonné d'un système de communication et système de communication WO2008077721A2 (fr)

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DE102006061277.9 2006-12-22
DE102006061277 2006-12-22
DE102007003122.1 2007-01-15
DE102007003122A DE102007003122A1 (de) 2006-12-22 2007-01-15 Verfahren zum Übertragen von Applikationsdaten über ein Kommunikationsmedium eines Kommunikationssystems, Teilnehmer eines Kommunikationssystems und Kommunikationssystem

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DE102011012572B3 (de) 2011-02-26 2012-03-08 Audi Ag Kraftfahrzeug mit einem FlexRay-Bus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005053270A2 (fr) * 2003-11-19 2005-06-09 Honeywell International Inc. Communication mobius a declenchement temporel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005053270A2 (fr) * 2003-11-19 2005-06-09 Honeywell International Inc. Communication mobius a declenchement temporel

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