WO2011082903A1 - Dispositifs de communication configurables, système de communication et procédé de communication - Google Patents

Dispositifs de communication configurables, système de communication et procédé de communication Download PDF

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Publication number
WO2011082903A1
WO2011082903A1 PCT/EP2010/068718 EP2010068718W WO2011082903A1 WO 2011082903 A1 WO2011082903 A1 WO 2011082903A1 EP 2010068718 W EP2010068718 W EP 2010068718W WO 2011082903 A1 WO2011082903 A1 WO 2011082903A1
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WO
WIPO (PCT)
Prior art keywords
communication
configurable
communication device
function modules
interface
Prior art date
Application number
PCT/EP2010/068718
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German (de)
English (en)
Inventor
Timo Lothspeich
Christian Kerstan
Andreas-Juergen Rohatschek
Heinz Tilsner
Bernd Lutz
Ingo Feldner
Tobias Kirchner
Clemens Schroff
Stoyan Todorov
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 WO2011082903A1 publication Critical patent/WO2011082903A1/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]
    • H04L12/42—Loop networks
    • H04L12/437—Ring fault isolation or reconfiguration
    • 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]
    • H04L12/46—Interconnection of networks
    • H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]

Definitions

  • the present invention relates to a configurable communication device, in particular in the form of a communication module, with a number of communication ports for connecting communicating elements, as well as an associated communication method using the configurable communication device.
  • pipeline also known as an instruction pipeline or processor pipeline
  • instruction pipeline refers, in particular in the case of microprocessors, to a method for instruction processing by which machine instructions or algorithms decomposed into sub-tasks are processed.
  • instruction pipeline also known as an instruction pipeline or processor pipeline
  • processor pipeline refers, in particular in the case of microprocessors, to a method for instruction processing by which machine instructions or algorithms decomposed into sub-tasks are processed.
  • only one subtask is executed instead of one complete command during one clock cycle.
  • the individual subtasks of several commands are executed simultaneously.
  • Pipelines are considered by experts to be too rigid and inflexible for certain tasks. As a rule, the order of the work to be performed can not be changed in the context of pipeline procedures. Although it may be possible to disable individual stations in a pipeline, it is not possible, for example, to go through certain stages multiple times.
  • on-chip communication involves the use of direct connections between individual components of a system or the use of bus solutions.
  • on-chip or off-chip communication methods make sense.
  • bus solutions that would provide a much more flexible means of communication are greatly limited in bandwidth and in the number of bus subscribers, since additional bus subscribers require stronger (more efficient) bus drivers and the number of connections to the so-called arbiter also increases. This has an increased effort in the routing of the individual connections result.
  • Networks provide a flexible solution for the realization of communication tasks, since they can react dynamically to load distributions and thus make optimum use of the existing communication channels.
  • the hardware complexity in the realization of networks is very high, since individual Nodes must specify new communication paths either via fixed routing tables or dynamically. In networks, the latency that increases with each node between sender and receiver is also detrimental.
  • crossbars For the realization of communication tasks also fixed connections through so-called crossbars are known. Each component is connected to each other. However, the cost of such a connection increases exponentially with the number of communication participants. Therefore, crossbars are rarely used in practice.
  • a configurable communication device in particular a communication module, with a number of communication connections for connecting communicating elements, a corresponding communication system, and a method for communication with the features of the independent claims are proposed.
  • Advantageous embodiments are the subject of the dependent claims and the following description.
  • the solution according to the invention comprises, by means of a communication device according to a configuration, at least one direct communication tion connection between at least two communication terminals to which communicating elements are connected to form.
  • the solution according to the invention establishes channels through which direct communication, as known from the pipeline method, is made possible. In this way, multiple components can communicate with each other simultaneously without affecting each other.
  • the invention therefore exploits the known efficiency advantages of the pipelining method, without having to accept their disadvantages.
  • individual stations or steps of a pipeline can be deactivated, but be repeated several times. This can be realized, for example, in the form of cyclic communication links.
  • system components communicate with one another according to a specific, mandatory data flow predetermined by the application. For example, a sensor must first be read out before its data can be processed and then further processed. Only then can a corresponding action be initiated. Therefore, there is no reason why a processing component should be able to directly access a sensor or its unprocessed data.
  • a configurable communication device which is realized for example by a field of configurable elements, a communication can be adapted to the respective needs.
  • consideration can be given to a communication sequence, as explained above, and the communication means can be adapted to this communication sequence. A superfluous additional effort, for example in the provision of powerful drivers or communication paths, can thus be avoided.
  • a configuration of the communication device (for example, a field of configurable elements) can be taken over and monitored by a higher-level unit.
  • a higher-level unit can be provided with particular advantage to provide means that autonomously (autonomously) register a need for a connection.
  • These resources can also be part of the communicating elements. Connections that are established either by a configuration by the higher-level unit or by a request of the components themselves advantageously remain at least until the next configuration (i.e.
  • Configuration cycle can also be designed permanently although a physical path may change. If appropriate, can also be provided to establish short-term communication paths over which, for example, only a specific message is exchanged, and then turned off.
  • a configurable communication device does not preclude the use of further (additional) communication means, such as buses or crossbars.
  • additional communication means such as buses or crossbars.
  • crossbars can be used for communication paths that are known to never change as part of the application.
  • a bus connection can also be used for external communication for compatibility reasons.
  • Figure 1 shows an example of data flow processing using fixed communication paths according to the prior art.
  • FIG. 2 shows an example of a data flow processing according to a particularly preferred embodiment of the invention.
  • FIG. 3 shows an example of a processing of a data flow according to a further preferred embodiment of the invention.
  • FIG. 4 shows a configuration of configurable elements according to a particularly preferred embodiment of the invention as well as a device of communication links according to a particularly preferred embodiment of the invention.
  • FIG. 5 shows a configurable communication device with function modules and communication means according to a further preferred embodiment of the invention.
  • FIG. 6 shows the mode of operation of a configurable communication device with function modules and communication means according to a further preferred embodiment of the invention.
  • FIG. 7 shows the mode of operation of a configurable communication device with function modules and communication means according to a further preferred embodiment of the invention.
  • FIG. 8 shows the mode of operation of a configurable communication device with function modules and communication means according to a further preferred embodiment of the invention.
  • FIG. 1, indicated as a whole by 100 shows schematically the processing of a signal from a camera as an example of a data flow-oriented application which is implemented at least partially in hardware, for example by pipelines (hereinafter referred to as generalization "hardware realization").
  • the camera signal is composed of the three color channels red (R), yellow (G) and blue (B).
  • red color channel (R) is explained in each case, but the processing of the other two channels takes place in principle in the same way.
  • the present invention is not limited to the processing of electronic video or camera signals, but in principle in all data flow-oriented applications, such as processing of audio data, sensor data (eg radar), etc., applicable.
  • the hardware implementation 100 has a first buffer 1, for example a 4-line buffer, which has at least interfaces 1.1 and 1.2. Via the interface 1.2, the buffer 1 is connected, for example, to a 3 * 3 filter 2 at its interface 2.1. Between interface 1.2 and interface 2.1 a connection 9.1, for example in the form of a wiring or a wiring is provided.
  • a connection 9.1 for example in the form of a wiring or a wiring is provided.
  • Filter 2 has another interface 2.2. Via the interface 2.2, the filter 2 is connected to a further buffer 3, in particular a further 4-line buffer 3, via its interface 3.1. Between the interface 2.2 and the interface 3.1, a further connection 9.2 is formed, which may be formed in accordance with the previously described connection 9.1.
  • the buffer 3 is connected via connection 9.3 to an interface 4.1 of a further 3 ⁇ 3 filter 4.
  • the signal is provided (outputted) to an interface 4.2.
  • a connection is provided between the interfaces 3.2 and 4.1.
  • the filters 2 and 4 of FIG. 1 may, for example, be realized in hardware and be configured by a corresponding matrix.
  • the application, as implemented by the arrangement of Figure 1, for example, requires the use of up to two filters in a row.
  • FIG. 2 shows a hardware realization corresponding to FIG. 1, for example signal processing, according to a particularly preferred embodiment
  • Embodiment of the invention in a schematic view.
  • the components 1, 2, 3, 4, which, as in FIG. 1, designate a buffer 1, a further buffer 3, a first filter 2 and a further filter 4, are arranged around a configurable communication device 5, for example as a configurable communication field can be realized.
  • the configurable communication device 5 for example as a configurable communication field can be realized.
  • Communication device 5 has interfaces 5.1 to 5.8, with which it communicates with the elements 1 to 4 and, as explained below, establishes a connection between the elements 1 to 4.
  • the configurable configuration device 5 may have a configuration device 6, which is used to configure the configurable communication device 5.
  • Other interfaces designated here by way of example with 5.9, can be provided.
  • the signal processing as shown in FIG. 1 can be implemented by the configurable communication device of FIG. 2 as follows.
  • a signal is provided, for example via the interface 5.9. Via the interface 5.5, this signal reaches the interface 1.1 (analogous to FIG. 1) of a 4-line buffer 1. The signal can be called up from the buffer via the interface 1.2 of this buffer 1 and the interface 5.6 of the configurable communication device. The signal is provided to the interface 5.1 via the interface 2.1 to a filter 2. Starting from filter 2, there is a connection via the interface 2.2 and the interface 5.2. In an analogous manner, but not explained again for the sake of clarity, the signal now arrives at buffer 3 and the further filter 4.
  • the signal After passing through elements 1 to 4, with individual elements, if If necessary, it can also be passed through several times or other elements can be bypassed, the signal is provided (output), for example to the interface 5.9.
  • the solution implemented in FIG. 2 includes the formation of communication paths or connections between the interfaces 5.9 and 5.5, the interfaces 5.6 and 5.1, the interfaces 5.2 and 5.7, the interfaces 5.8 and 5.3 and the interfaces 5.4 and 5.9 of the communication device 5.
  • the Training this shown with dashed arrows communication connections takes place in accordance with a configuration by a configuration device 6.
  • the establishment of the communication links can also be made to a request by the elements 1 to 4 out.
  • the respective connections between the elements 1 to 4 with the communication device 5 may be provided in accordance with the previously described connection 9.1 -9.3, but may also be implemented in any other way.
  • a signal passes via interface 5.5 to interface 1.1 of buffer 1.
  • the signal passes via interface 1.2 to interface 5.6 of the configurable communication device.
  • a communication connection is defined, whereby the signal is provided at the interface 2.1 of the filter 2.
  • the signal passes via the interface 2.2 of the filter 2 to the interface 5.1 1 of the configurable communication device 5.
  • the signal is provided via the interface 5.7 of the configurable communication device 5 to the interface 3.1 of the buffer 3.
  • the signal leaves the buffer 3 via the interface 3.2 and reached via the interface 5.8 and provided between interface 5.8 and interface 5.10 communication link to the interface 2.1 of the filter 2.
  • the filter 2 is thus run through again. After leaving the filter 2 via interface 2.2 and after passing through interface 5.1 1, the signal is provided to interface 5.9.
  • the device of the fixed communication connections can also be done in the context of Figure 3 by a communication device 6, but this is not shown for clarity.
  • FIG. 4A the configuration of configurable elements 8, as they can be used as part of a configurable communication device 5, is shown schematically.
  • the left and the right part of Figure 4A show the identical configuration element 8, which is however shown in different borrowed switching states.
  • the configuration element 8 has an input 8.1 and two outputs 8.2 and 8.3, which can be selectively connected to the input 8.1 via a connection 7.
  • the configuration elements in addition to the binary switching state, as shown in Figure 4A can also have other switching states, for example, several inputs and / or outputs can be provided.
  • FIG. 4B shows a schematic, partial detail view of FIG. 2 or 3, wherein the arrangement of the communication elements 8 is illustrated. It is shown how in each case between the interfaces 5.1 and 5.7 via the connections 7, a direct communication connection between the interface 2.1 of the filter 2 of the interface 3.1 of the buffer 3, and the interfaces 2.2 of the filter 2 and the interface 3.2 of the buffer 3 is made.
  • four configurable elements 8 are shown in FIG. 4B, any other number of configurable elements 8 is of course conceivable. In particular, it may also be provided to provide configurable elements of a configurable logic circuit, for example one
  • a configurable communication device 50 can be function modules AC, which are arranged in blocks 10.1-10.3, and communication means 1.1.1, 1.2 for communication at least between the function modules AC and / or the blocks 10.1 - 10.3 and at least one system monitoring unit 12, wherein according to the at least one system monitoring unit 12 based on provided by the communication means 1 1.1, 1 1.2 and / or the function modules AC system information a shift and / or an exchange of functional modules AC is vor spiritbar.
  • the communication device 50 may further include, for example, a memory device 13, an input-output unit 14, which may be connected to an input 8.1-8.1 1, as explained above, a bridge 15 and / or a processor 16, in particular a software processor 16 , exhibit.
  • the individual elements can be connected via communication connections 17.1 -17.10 with the communication means 1 1.1, 1 1.2.
  • Field programmable gate arrays enable a flexible implementation of circuits on a chip and can therefore also be advantageously used in the context of a communication device 50.
  • the configuration of an FPGA is conventionally carried out via corresponding configuration files.
  • the configuration is mostly static, ie once before commissioning of a corresponding building block.
  • the well-known, so-called dynamic reconfiguration of FPGA at runtime is only possible to a limited extent.
  • Known FPGA architectures are therefore inflexible. Even with dynamic reconfiguration, there are usually fixed positions between which function modules AC can be exchanged.
  • a targeted dynamic displacement and / or replacement of individual functional modules A-C is provided.
  • communication paths via communication means 1 1.1, 1 1.2 can be shortened and / or simplified.
  • the function modules A-C can each be optimized for different parameters, such as energy efficiency, performance, accuracy and area.
  • the parameters are conventionally weighted and a corresponding solution chosen from the set of Pareto optimals.
  • modules A-C for different parameters, depending on the rotational speed. At low speeds, less efficient, but more energy-efficient function modules A-C can be used. At higher speeds, these function modules A-C are replaced by speed-optimized function modules A-C.
  • Such a multiple implementation can modern methods of
  • FPGA synthesis (such as high-level synthesis) with representational rem effort can be realized. If these respectively optimized instances of the function modules AC are available at runtime, different versions can be used as required in order to optimize the system behavior in accordance with the situation. For example, function, communication and / or utilization of the function modules AC and / or the blocks 10.1 - 10.3 can be monitored at runtime by the system monitoring device 12, the information from, for example, the communication means 1 1.1, 11.2, the function modules AC, the memory device 13, the Input-output unit 14, the bridge 15 and / or the processor 16 receives.
  • function modules A-C between which there is a high level of communication in certain situations, can be moved closer to each other and, depending on the capacity utilization, either more performant or energy-saving implementations can be used. It is also possible, depending on the current system requirements, to execute individual functions in software on an optional (software) processor 10 or, if necessary, to outsource them to external hardware components (not shown).
  • the system monitoring unit 12 itself advantageously analyzes as a passive bus element the communication via the communication means 1 1.1, 1 1.2 provided as a bus and can thus determine corresponding requirements or needs without influencing or even restricting the system behavior.
  • the utilization of the individual functional modules A-C can also be determined implicitly via the communication or a communication volume via the communication means 1 1.1, 1.2.
  • direct information of the function modules A-C is also conceivable, which provide corresponding information to the system monitoring unit 12 (similar to a diagnostic interface).
  • the provision of the information to the system monitoring unit 12 can take place via the existing communication means 11.1, 1.2 and / or via the further communication channels 17.1 -17.6.
  • a priori information about the respective implementations (deadlines, area, performance, etc.) of the function modules AC are known to the system monitoring unit 12 and / or, for example as meta-information, in addition to the function modules AC at runtime. made available.
  • the system can continue to operate without interruption by virtue of a redundant introduction of the functional modules AC to be relocated and / or exchanged, or of the corresponding implementations of the functional modules AC.
  • A-C for the new instance or implementation can be done during operation.
  • a network-on-chip architecture or the above-described approach of the configurable communication device may prove advantageous, since they allow a corresponding dynamic communication, allow simple clustering and support natively the switching between the instances by changes in the routing, if necessary.
  • FIGS. 6 to 8 the mode of operation of the communication device 50, as explained in detail in FIG. 5, is illustrated by an exemplary embodiment.
  • the system monitoring unit 12 is not shown for the sake of clarity, but nevertheless preparable.
  • the respective hatching of the function modules indicates a utilization or utilization, whereby one white function module AC is low, one black function module AC is heavily utilized, and the other hatchings, according to their brightness, indicate intermediate states.
  • the area size of the symbols of the function modules AC symbolizes a real size, for example a chip area or a processor occupancy or utilization these modules, with function modules shown in greater detail, for example, more powerful (performant), but more resource-intensive.
  • FIG. 6A shows a communication device 50 in operation, with function module A occupying block 10.3 and function module C block 10.1. Block 10.2 is unoccupied, function module B is implemented in a processor 16. In Figure 6A function module C in block 1 is too busy. It is therefore expedient to instantiate a more performant implementation.
  • the function module C is instantiated in parallel during a transitional time, as shown in FIG. 6B.
  • a first implementation of the function module C (heavily loaded) runs in block 10.1.
  • Another (more efficient and thus less heavily utilized) implementation of the function module C is instantiated in block 10.2 at the same time.
  • FIG. 7A shows a communication device 50 in which a high level of communication between a function module A implemented in block 10.3 and a function module C implemented in block 10.2 is detected, as a result of which communication means 1.1.1 and 1.2 and optionally bridge 15 are heavily utilized. Therefore, function module A should be moved closer to function module C, to which the (unoccupied) block 10.1 offers.
  • the function module A is instantiated in parallel during a transitional time, as shown in FIG. 7B.
  • a first implementation of the function module A runs in block 10.3.
  • Another (preferably functionally identical) implementation of the function module A is simultaneously instantiated in block 10.1.
  • the first, previously further removed instance of the function module A is removed from block 10.3, as shown in FIG. 7C.
  • FIG. 8A shows a communication device 50 in which a low utilization of a functional module A implemented in block 10. 1 is found, which is why it would be advantageous to outsource this functional module A to the processor 16 and execute it next to the functional module B, for example in the form of a software implementation.
  • the function module A is instantiated in parallel during a transitional time, as shown in FIG. 8B.
  • a first implementation of the function module A still runs in block 10.1.
  • Another, for example, resource-saving but less powerful, software implementation of the function module A is at the same processor 16 realized.
  • the first instance of the function module A implemented in block 10.1 is also switched off here, as shown in FIG. 8C.

Abstract

La présente invention concerne un dispositif de communication configurable (5) présentant un certain nombre de raccordements de communication (5.1 à 5.8) destinés au raccordement d'éléments communicants (1 à 4) qui permettent au dispositif de communication (5) d'établir au moins une liaison de communication directe (7) entre au moins deux raccordements de communication (5.1 à 5.8) selon une configuration. La présente invention concerne en outre un dispositif de communication (50) qui comporte des modules fonctionnels (A-C) et des moyens de communication (11.1, 11.2) destinés à assurer la communication au moins entre les modules fonctionnels (A-C), ainsi qu'au moins une unité de surveillance de système (12), et qui permet, selon la ou des unités de surveillance de système (12), de réaliser un déplacement et/ou un échange des modules fonctionnels (A-C) sur la base des informations système mises à disposition par les moyens de communication (11.1, 11.2) et/ou par les modules fonctionnels (A-C). La présente invention concerne également un procédé de communication.
PCT/EP2010/068718 2009-12-15 2010-12-02 Dispositifs de communication configurables, système de communication et procédé de communication WO2011082903A1 (fr)

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DE102009054646.4 2009-12-15
DE102009054646A DE102009054646A1 (de) 2009-12-15 2009-12-15 Konfigurierbare Kommunikationseinrichtung, Kommunikationssystem und Verfahren zur Kommunikation

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US4881220A (en) * 1987-08-24 1989-11-14 Toyoda Koki Kabushiki Kaisha Multiplex communication system for sequence controllers
WO1998028882A1 (fr) * 1996-12-23 1998-07-02 Symbios, Inc. Configuration dynamique de topologie dans un environnement de communication en marguerite
WO2001015363A1 (fr) * 1999-08-23 2001-03-01 Marconi Communications, Inc. Systeme et procede de transport de paquets dans un reseau en boucle
WO2001015383A1 (fr) * 1999-08-25 2001-03-01 Nils Marchant Commutateur et systeme de commutation de protection de reseau distribue incorporant ledit commutateur
US6317765B1 (en) * 1998-09-16 2001-11-13 Cirrus Logic, Inc. Sinc filter with selective decimation ratios
EP1345362A2 (fr) * 2002-03-15 2003-09-17 Broadcom Corporation Architecture flexible rapide du processeur du filtre pour un dispositif du réseau
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US20080037650A1 (en) * 2006-05-19 2008-02-14 Stojancic Mihailo M Methods and Apparatus For Providing A Scalable Deblocking Filtering Assist Function Within An Array Processor
US7480603B1 (en) * 2006-08-16 2009-01-20 Altera Corporation Finite impulse response (FIR) filter compiler

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4881220A (en) * 1987-08-24 1989-11-14 Toyoda Koki Kabushiki Kaisha Multiplex communication system for sequence controllers
WO1998028882A1 (fr) * 1996-12-23 1998-07-02 Symbios, Inc. Configuration dynamique de topologie dans un environnement de communication en marguerite
US6317765B1 (en) * 1998-09-16 2001-11-13 Cirrus Logic, Inc. Sinc filter with selective decimation ratios
WO2001015363A1 (fr) * 1999-08-23 2001-03-01 Marconi Communications, Inc. Systeme et procede de transport de paquets dans un reseau en boucle
WO2001015383A1 (fr) * 1999-08-25 2001-03-01 Nils Marchant Commutateur et systeme de commutation de protection de reseau distribue incorporant ledit commutateur
EP1345362A2 (fr) * 2002-03-15 2003-09-17 Broadcom Corporation Architecture flexible rapide du processeur du filtre pour un dispositif du réseau
US20060133551A1 (en) * 2004-12-21 2006-06-22 Davidoff Loan T Configurable filter and receiver incorporating same
US20080037650A1 (en) * 2006-05-19 2008-02-14 Stojancic Mihailo M Methods and Apparatus For Providing A Scalable Deblocking Filtering Assist Function Within An Array Processor
US7480603B1 (en) * 2006-08-16 2009-01-20 Altera Corporation Finite impulse response (FIR) filter compiler

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