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WO2013167355A1 - Dispositif de transmission de données dans un support de transmission optique - Google Patents

Dispositif de transmission de données dans un support de transmission optique Download PDF

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Publication number
WO2013167355A1
WO2013167355A1 PCT/EP2013/058019 EP2013058019W WO2013167355A1 WO 2013167355 A1 WO2013167355 A1 WO 2013167355A1 EP 2013058019 W EP2013058019 W EP 2013058019W WO 2013167355 A1 WO2013167355 A1 WO 2013167355A1
Authority
WO
WIPO (PCT)
Prior art keywords
unit
transmission
data signals
transmission medium
optical transmission
Prior art date
Application number
PCT/EP2013/058019
Other languages
German (de)
English (en)
Inventor
Christian Magerle
Original Assignee
Siemens Convergence Creators 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 Siemens Convergence Creators Gmbh filed Critical Siemens Convergence Creators Gmbh
Publication of WO2013167355A1 publication Critical patent/WO2013167355A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/40—Transceivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2589—Bidirectional transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1301—Optical transmission, optical switches
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13196—Connection circuit/link/trunk/junction, bridge, router, gateway

Definitions

  • the present invention relates generally to the field of communications technology; and data signal transmission.
  • the present invention relates to a system for data signal transmission in an optical transmission medium of a transmission network.
  • the system therefore comprises at least two computer units, from which data signals are transmitted, received and exchanged via the optical transmission medium of the transmission network and which are mounted in different local communication networks.
  • communication networks are used for communication between computer units.
  • local communication networks or Local Area Networks (LAN) are used, of which usually the so-called Ethernet as a standard for data transmission between the computer units and as a transmission medium such as twisted pair cable or fiber optic cable used become.
  • Ethernet Local Area Networks
  • optical networks are used as transmission networks, as by optical networks large transmission links, for example, up to several thousand kilometers with good performance speed and transmission speed can be realized.
  • Optical networks are broadband high speed networks based on optical transmission technology with corresponding optical transmission components.
  • WDM binary signals wavelength division multiplex or wavelength division multiplexing
  • the optical data signals are transmitted via one or more network nodes.
  • noise, crosstalk, propagation time differences, etc. accumulate, for example - particularly in the case of large optical networks or in the case of long transmission distances. Therefore, for a magnification of a
  • an optical transmission medium LI, L2, W1, W2 can be used, as in a data transmission system for wide-area data transmission shown by way of example in FIG. 1, both in local communication networks and in wide area data transmission or in the respective transmission network such as Fiber optic cable or
  • Fiber optic cable and thus optical data transmission can be used.
  • T2 used in a transition from a local communication network to a transmission network - as shown in Figure 1 - so-called transponder Tl.
  • T2 can receive optical data signals of a wavelength, converted into optical data signals of a second wavelength and forwarded.
  • transponders, regenerators, etc. may in the transmission of data signals to delays or propagation delays, which play a minor role in the commonly used communication services and / or applications, as long as a used communication service (eg telephony, data transmission from a Central computer to a user terminal, etc.) is not disturbed.
  • applications of computer-to-computer communication such as e.g. in applications of the so-called grid computing, in applications of the so-called cloud computing, etc., for example, already delays or run time delays in the order of about 10 ms through the data transmission or through the transmission network play an essential role. Even in the area of so-called online video gaming, the shortest possible runtime delay in computer-to-computer communication is becoming increasingly important.
  • the lowest possible propagation delay in data transmission or data exchange between two computer units from different local communication networks for successful transactions is important, with a distance between the each local communication networks or computer units or trading centers can be up to several hundred kilometers. Since today data processing within the computer units - especially for the application of high frequency trading - is usually optimized, the propagation delay mostly depends on the transmission path or on the transmission medium. It is therefore necessary to correspondingly optimize the propagation delay in a data signal transmission via a transmission network which connects computer units or the local communication networks of these computer units for a data exchange. As shown by way of example and schematically in FIG.
  • an optical transmission medium W1, W2 (eg fiber-optic cable, etc.) is used today in a wide-area data transmission between at least two computer units RE1, RE2, which are located in different local communication networks.
  • a fiber optic connection LI, L2 can be used for data transmission.
  • the connection to the transmission network is then via the transponder Tl, T2.
  • at least one regenerator Rl may be necessary because, for example, direct connections between the computer units due to the length of the transmission path or due to a necessary, common use of glass fibers are not possible.
  • additional optical amplifiers can be used.
  • the data transmission for long links and corresponding monitoring of data transmission on the transmission line is optimized.
  • the connections of the optical transmission medium W1, W2 between the respective transponders T1, T2 and the exemplary regenerator R1 connections according to the Optical Transport Hierarchy or OTH hierarchy standardized by the ITU in Recommendation G.709 are used, by which the transmission level for optical networks uniform signal structures, monitoring and alarm functions are defined, and which has been optimized for broadband data streams.
  • the data can come from an Ethernet, Fiber Channel, SDH network or ATM network, for example.
  • a framing data packets are generated from the packet-switched data, which are then converted eg by the transponder Tl, T2 into optical data signals and modulated onto a wavelength for transmission.
  • the data signals can be supplemented, for example, by the transponder T 1, T 2 by additional overhead data for monitoring and / or error correction (eg by a forward error correction (FEC)).
  • FEC forward error correction
  • the transmission line can be increased to the next transponder Tl, T2 or regenerator R, but there is a drawback that increased particularly by the used error correction, and their decoding, the propagation delay in the transmission of data signals as a transmission time and the Laufzeitverzö ⁇ delay time depend in particular on a used data rate, block size of the error correction used as well as a corresponding decoding algorithm. Even if, for example, optimized for long distance transmission is forward error correction used with little additional overhead, it can cause additional delays for example by a Dekod istsalgo ⁇ algorithm because of required repetitions when decoding. Thus, the delay for a standard forward error correction, for example, according to the ITU Recommendation G.709 for a data signal with approx.
  • 10Gbit / s cause a delay of a few microseconds.
  • the delay may be, for example, more than 100] is what speaks, for example, an optical transmission line of about 20 km f ⁇ .
  • a data transfer is to reduce the delay period of the lease übertra ⁇ supply, used without or with very simple framing and / or without error correction.
  • Characterized a Strategicalzöge- approximately term of the data transmission between the computer units and the local communication networks of such computer units can indeed be reduced, however, by an absence of egg ⁇ ne error correction in data transmission additional equipment - especially regenerators Rl - necessary.
  • This means that the data signals to be transmitted on the transmis- tion distance must be improved more often by means of signal processing by regenerators in the transmission quality. This results in particular by the waiver of the error correction, an additional expense and additional costs in construction, management and maintenance of the data transmission system.
  • the invention is therefore based on the object of specifying a system for data transmission in an optical transmission medium, in particular for long-distance data transmission, in which a delay runtime in the data signal transmission is reduced in a simple and cost-effective manner without additional outlay.
  • transponder unit per computer unit.
  • This transponder unit is integrated directly into the respective computer unit.
  • the respective computer unit for a data signal transmission directly with an optical transmission medium (e.g.
  • Fiber optic cable or optical fiber of a transmission network in particular for long-distance data transmission connectable or connectable to the optical transmission medium.
  • the main aspect of the method according to the invention is that a functionality of a transponder, by which usually a computer unit or a local communication network of the computer unit is connected to an optical transmission medium of a transmission network, is shifted into the computer unit.
  • the integrated transponder unit can be used e.g. be implemented as a so-called plug-in unit and thus easily be inserted or installed in the computer unit.
  • Transponder functionality in the computer unit eliminates connections and connections between the computer unit and a corresponding associated transponder at a border between local communication network and transmission network. In this way, on the one hand, the delay runtime of a data transmission is reduced since, in particular, delays due to interfaces present in the computer unit and in an additional transponder and corresponding data signal processing are eliminated. On the other hand, the complexity and cost of the data transmission system are reduced because the system has a simpler structure and / or a smaller number of necessary equipment units.
  • This signal processing unit for example, in a programmable logic integrated circuit (IC) such.
  • IC programmable logic integrated circuit
  • FPGA field programmable gate array
  • ASIC application-specific integrated circuit
  • the signal processing unit may also include a configuration and monitoring function.
  • the transponder unit is very simple due to their modular design to the respective requirements (eg data rate, etc.) and can be designed without much effort for the lowest possible delay runtime (eg by appropriate selection of a coding or decoding algorithm or error correction method, etc.) become.
  • the connection unit via which the integrated transponder unit can be connected to the optical transmission medium of the transmission network, it is possible, for example, to use optical reception and transmission units for different data rates and / or different applications.
  • the integrable transponder unit can ideally be adapted to a particular field of application (eg finance, high frequency trading, video gaming, grid computing, cloud computing, etc.).
  • the transponder unit is designed as a so-called plug-in unit or extension unit and can be very easily integrated into a computer unit such as a personal computer.
  • an encryption function on the integrable transponder unit it is not necessary to use a separate, additional encryption unit in the system according to the invention.
  • the encryption function of the integrable transponder unit enables rapid end-to-end encryption of the data signals to be transmitted between the computer units. This protects in a simple manner the data signal to be transmitted over an entire transmission path since, in contrast to external or additional encryption units, there are no longer any uncertain transmission sections on which, for example, the data signals to be transmitted are available in unencrypted form.
  • the transmission of the data signals on the optical transmission medium of the transmission network standardized transmission protocols for high-speed serial transmission, in particular InfiniBand, PCI Express or Fiber Channel, are provided.
  • high-speed protocols for data transmission the system according to the invention can furthermore be optimized very simply and without great effort for a rapid transmission of the data signals between the computer units, since rapid access to the transponder unit in combination with a corresponding delay delay time transmission of the data signals via the optical Medium a rapid implementation guarantee the desired applications, transactions, etc.
  • transmission protocols such as Infini-Band, PCI Express or Fiber Channel allow low cost and delay latency or poor transmission of data signals on an optical transmission medium.
  • Fiber Channel has been designed for serial, high-speed continuous transmissions of large data signal volumes, and data rates of 2, 4, 8, and up to 16 Gbps can be achieved, and in the case of optical transmission media, e.g. Fiber optic cable, etc. e.g. be bridged up to 10 km.
  • InfiniBand is also a specification for describing a high-speed serial transmission, e.g. via a bidirectional serial bus, a low-cost and low-latency data transmission of e.g. under 2 microseconds.
  • PCI Express Peripheral Component Interconnect Express
  • PCI Express is a designation of a standard for a separate point-to-point connection that can co-operate with various devices (e.g., computer units, processors, etc.). PCI Express makes it possible to establish direct connections between the individual devices so that communication between individual devices does not influence an achievable data rate of other devices.
  • An expedient development of the system according to the invention provides that algorithms optimized for coding, decoding and for error correction of the data signals are designed for low delay runtime, in particular so-called convolutional codes and / or block codes with a small block size.
  • algorithms optimized for coding, decoding and for error correction of the data signals are designed for low delay runtime, in particular so-called convolutional codes and / or block codes with a small block size.
  • convolutional codes eg convolutional codes with a so-called Viterbi decoder, etc.
  • block codes with a small block size eg BCH, etc.
  • Convolutional codes are commonly used in telecommunications for channel coding and offer so-called forward error correction. In addition, a higher protection against transmission errors is achieved by additionally introduced redundancy.
  • mathematical method of folding the information content of the individual user data is distributed over several places of a codeword.
  • the so-called Viterbi decoder or algorithm has been developed, by which e.g. Pattern recognized and thus can be used for error corrections or to avoid transmission errors.
  • a block code such as the Bose-Chaudhuri-Hocquenghem code or BCH code is a type of channel coding which is characterized in that used codewords all have the same number of symbols (eg bits).
  • Block codes may be used, for example, for error detection and correction in transmission of data signals over a faulty channel.
  • a codeword having a second length is to be transmitted to an information word to be transmitted with a first length, wherein the first length is greater than the second length.
  • Adding a first and second length difference to additional symbols (eg, bits) provides redundancy that can be used to detect and correct transmission errors.
  • At least one integrable regenerator unit is provided as a function of a length of a transmission path of the optical transmission medium required in each case for the transmission of the data signals between the at least two computer units.
  • regenerator units By using regenerator units on the transmission path, a data signal to be transmitted can be reprocessed and thus a range of the data signal or a length of the transmission path can be increased very easily.
  • a data signal is received, amplified, clock and shape recovered and then forwarded.
  • the at least one regenerator unit has at least two connection units for a connection to the optical transmission medium and for receiving and forwarding data signals via the optical transmission medium and a signal processing unit.
  • the signal processing unit comprises at least one configuration and monitoring function as well as functions for a signal regeneration. There is then only a forwarding of the received signal in a tactically and formally restored type.
  • the regenerator unit is a transparent unit with respect to error correction and possibly encryption or decryption, since the regenerator then no access to error correction and any Ver used - / has decryption.
  • a signal processing unit may be provided in which the functions for signal regeneration have functions for coding, decoding received or forwarded data signals with corresponding error correction and detection.
  • the same coding and the same decoding for the data signals or the same error detection / correction as in the transponder unit are used to determine the delay runtime by the regenerator unit to keep as low as possible for very long transmission distances.
  • the signal processing unit of the regenerator unit may be implemented in a programmable logic integrated circuit (IC), such as a semiconductor. a Field Programmable Gate Array (FPGA) or an Application-specific Integrated Circuit (ASIC).
  • IC programmable logic integrated circuit
  • FPGA Field Programmable Gate Array
  • ASIC Application-specific Integrated Circuit
  • the regenerator unit itself can be designed in an advantageous manner as a so-called plug-in unit or expansion unit.
  • the regenerator can be inserted, for example, in a housing and inserted as a so-called stand-alone unit in the optical network or integrated into existing network elements of the optical network.
  • FIG. 1 shows an example and schematically a structure of a data transmission system for long-distance data transmission between at least two computer units or two different local communication networks.
  • FIG. 2 shows, in an exemplary and schematic manner, a structure of the system according to the invention for data transmission via an optical transmission medium in a transmission network.
  • FIGS. 3a and 3b show by way of example and schematically a structure of a transponder unit which can be integrated into a computer unit of the system according to the invention or a structure of a regenerator unit which can be integrated into the system according to the invention.
  • Figure 1 shows schematically a data transmission system for long-distance data transmission via an optical Transmission medium, as it is commonly used today, for example in the high-speed area.
  • the data transmission system consists of at least two computer units RE1, RE2, which are located in different local communication networks.
  • the computer units RE1, RE2 are connected via a respective network interface NS1, NS2 to the respective local communication network and via this
  • connection LI L2
  • transmission mediums suitable for short transmission distances such as e.g. Copper cables, glass fiber, etc. are used.
  • Ethernet or Fiber Channel can be used as network technology in the local communication network and thus also on the connections LI, L2.
  • the data signals via a so-called line interface LI be forwarded to the optical transmission medium Wl, W2 a transmission network.
  • optical transmission medium for example, a fiber optic cable can be provided. Possible optical amplifiers and other optical components which are usually used on these connections W1, W2 are not shown for the sake of simplicity.
  • the transponder T1, T2 receives, for example, an optical data signal from the local communication network having a first wavelength and converts this into a data signal having a second wavelength for forwarding on the optical transmission medium W1, W2. It is also conceivable that the transponder Tl, T2 from the local communication network - when in this example copper cable is used as a transmission medium - receives an electrical data signal and converts it into an optical data signal for forwarding in the optical transmission medium Wl, W2. Optical data signals are also received via the optical transmission medium W1, W2 from the transponder via the line interface LI and then converted either into optical data signals with corresponding wave signals. Implemented length for the local communication network or converted into electrical data signals for the local communication network.
  • the data signals are supplied, for example, as so-called WDM binary signals (wavelength division multiplex or wavelength division multiplexing) and wavelength division multiplex systems such as DWDM (dense wavelength division multiplex) or CWDM (coarse wavelength division multiplex ) used.
  • WDM binary signals wavelength division multiplex or wavelength division multiplexing
  • wavelength division multiplex systems such as DWDM (dense wavelength division multiplex) or CWDM (coarse wavelength division multiplex ) used.
  • regenerators R1 are used in a transmission network.
  • the regenerator R 1 which likewise has so-called line interfaces L 1 for transmitting and / or receiving optical data signals, the data signals to be transmitted are amplified, restored in terms of timing and shape, and then forwarded accordingly.
  • - data transmission system for long-distance data transmission for example, the data transmission and a corresponding monitoring of data transmission on the transmission line Wl, W2 optimized accordingly.
  • connections according to the Optical Transport Hierarchy or OTH hierarchy standardized by the ITU in Recommendation G.709 are used, by which the transmission level for optical networks uniform signal structures, monitoring and alarm functions are defined. This takes place a transport of the data signals to be transmitted in so-called containers.
  • the data signals can originate, for example, from local communication networks with Ethernet, Fiber Channel, an SDH network or ATM network.
  • a framing data packets are generated from the packet-switched data, which then, for example, from the transponder Tl, T2 converted into optical data signals and a wavelength for transmission aufmodu ⁇ lation.
  • the data signals can be supplemented, for example, by the transponder T 1, T 2 by additional overhead data for monitoring and / or error correction (eg by a forward error correction (FEC)).
  • FEC forward error correction
  • a delay maturity for example, in a Da ⁇ tensignal with about 10 Gbit / s using a standard forward error correction, for example, in accordance with ITU Recommendation G.709 up to more than 100] is, for example, when using an optimized Vormaschinert sêtkorrektur of a few microseconds in accordance with ITU Recommendation G975.1 amount.
  • the system according to the invention according to FIG. 2 overcomes the disadvantages of the typically used data transmission system for long-distance data transmission illustrated by way of example in FIG. 1 as well as corresponding adaptations of this system shown in FIG. 1 to a shortening of a latency in the data transmission.
  • FIG. 2 shows in an exemplary and schematic way the system according to the invention for data transmission in an optical transmission medium W1, W2 (eg fiber-optic cable, etc.) for a long-distance data transmission.
  • the system according to the invention again comprises at least two computer units RE1, RE2, which are accommodated in different local and remote local communication networks.
  • the computer units RE1, RE2 are exchanged over an optical transmission medium Wl, W2 a transmission network - especially an optical network - especially time-critical data signals.
  • the computer units RE1, RE2 each have a transponder unit TE1, TE2, which is integrated into the respective computer unit RE1, RE2 and has a configuration shown by way of example and schematically in FIG. 3a.
  • the respective computer unit RE1, RE2 can be connected directly to the optical transmission medium, whereby for the data signal to be transmitted a transmission in a local communication network and a conversion in a separate transponder from a local communication network into the transmission network and the corresponding the delay times are eliminated.
  • the data signals are again input as so-called WDM binary signals (wave-length division multiplex or wavelength-multiplexing). feeds and wavelength division multiplexing systems such.
  • WDM binary signals wave-length division multiplex or wavelength-multiplexing
  • feeds and wavelength division multiplexing systems such.
  • regenerator R In accordance with long transmission distances, in which due to disturbances a direct transmission or direct connection for a transmission of data signals between the computer units RE1, RE2 is not useful, at least - depending on the length of the transmission line - a regenerator R be inserted.
  • a construction of this regenerator unit R which can be embodied as a plug-in or plug-in unit and can either be accommodated in its own housing or in network nodes (not shown), is shown by way of example and schematically in FIG. 3b.
  • W2 For a further reduction of the delay propagation time in the system according to the invention on the optical transmission medium Wl, W2 corresponding transport protocols such. standardized high-speed protocols (e.g., InfiniBand, PCI Express, Fiber Channel, etc.) in use.
  • standardized high-speed protocols e.g., InfiniBand, PCI Express, Fiber Channel, etc.
  • the delay transit time can be reduced by using algorithms for coding, decoding and error correction of the data signals that are optimized for low delay propagation time, and a distance between the communicating computer units RE1, RE2 or the computer units RE1, RE2 and an optionally used regenerator unit R can be increased .
  • algorithms for coding, decoding and for error correction with a low delay runtime for example, so-called convolutional codes (eg convolutional codes with a so-called bitmap decoder, etc.) and / or block codes with a small block size (eg BCH, etc.) can be used. be used.
  • convolutional codes eg convolutional codes with a so-called bitmap decoder, etc.
  • block codes with a small block size eg BCH, etc.
  • FIG. 3 a shows an exemplary structure of a transponder unit TE 1 that can be integrated into the computer unit RE 1, RE 2.
  • the transponder unit TE1 is designed as a so-called plug-in or plug-in unit and thus very easy in a computer unit RE1, RE2 such as a personal computer, computer, etc. are integrated or installed.
  • the transponder unit TE1 has an attachment unit AC for direct integration into the respective computer unit RE1, RE2.
  • a transponder unit TE1 comprises a connection unit AE for a connection to the optical transmission medium W1, W2.
  • the connection unit AE also has an optical transmission unit OT and an optical reception unit OR.
  • connection unit AE modulates the data signal to be transmitted onto the optical transmission medium W1, W2 or decouples it from this.
  • the transponder unit TE1 comprises a signal processing unit SV, which functions for configuration and monitoring CM, for processing SP of data signals, for coding C and decoding D with corresponding error correction of data signals and possibly for encryption and Decryption EN of data signals.
  • the signal processing unit SV can be implemented in a programmable logic integrated circuit (IC) such as a Field Programmable Gate Array (FPGA) or an Application-specific Integrated Circuit (ASIC).
  • IC programmable logic integrated circuit
  • FPGA Field Programmable Gate Array
  • ASIC Application-specific Integrated Circuit
  • Error correction especially e.g. Convolutional code with Viterbi decoder or block code (e.g., BCH) decoded.
  • the encryption function is run through to decrypt the data signals before the data signals are processed by the processing function SP of the signal processing unit SV for further processing in the computer unit RE1, RE2 and transmitted to the plug-on unit AC.
  • FIG. 3b shows, by way of example and schematically, a regenerator unit R which can be used in the system according to the invention.
  • the regenerator unit R which can be used in a separate housing or integrated into a network node of the transmission network, has a power supply unit PS.
  • the regenerator unit R comprises at least two terminal units AE, which each have an optical receiving unit OR and an optical transmitting unit OT for receiving and / or transmitting data signals via the optical transmission medium.
  • the optical transmitting unit OT and the optical receiving unit OR e.g. corresponding plug-in units, which are available for different data rates or transmission applications, are used.
  • the regenerator unit R comprises a signal processing unit SVR, which is used in a programmable logic integrated circuit (IC), such as e.g. a Field Programmable Gate Array (FPGA) or an Application Specific Integrated Circuit (ASIC).
  • IC programmable logic integrated circuit
  • FPGA Field Programmable Gate Array
  • ASIC Application Specific Integrated Circuit
  • the signal processing unit SVR comprises at least one configuration and monitoring function CM for a
  • Control of the regenerator unit R and corresponding functions for a signal regeneration which functions for coding C and decoding D of data signals with corresponding may include error detection and correction per connection unit AE or for each transmission direction.
  • the same coding C or decoding D or the same error correction / the same algorithm for error detection and correction is provided in the regenerator unit R as in the transponder unit TE1.
  • the encryption or decryption - if an encryption of the data signals is provided - is performed in the computer unit RE1, RE2 of the respective transponder purity TE1, TE2.
  • the regenerator unit R amplifies the data signal only correspondingly in order to increase a transmission range.
  • the signal processing unit can only have functions for signal regeneration without functions for coding C and decoding D with error detection and correction. That these functions C, D or an error correction is omitted and there is simply a forwarding of a signal received via the optical transmission medium Wl, W2 in a clock and formally restored type.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

L'invention concerne un dispositif servant à la transmission de signaux de données dans un support de transmission optique (W1, W2), en particulier un câble à fibres optiques pour la transmission de données à longue distance dans un réseau de transmission. Le dispositif se compose au moins de deux ensembles informatiques (RE1, RE2) qui sont situés dans le même réseau local de communication et qui émettent et/ou reçoivent ou échangent des signaux de données par l'intermédiaire du support de transmission optique (W1, W2) - en particulier sur de longues distances de transmission. Selon le dispositif selon l'invention, chaque ensemble informatique (RE1, RE2) est associé à un ensemble transpondeur (TE1, TE2). Cet ensemble transpondeur (TE1, TE2) est intégré directement dans chaque ensemble informatique (RE1, RE2) et ledit ensemble informatique (RE1, RE2) peut être raccordé par l'ensemble transpondeur intégré (TE1, TE2) directement au support de transmission optique (W1, W2) en vue d'un échange de signaux de données. Par ailleurs, en fonction d'une longueur d'une distance de transmission optique pour les signaux de données, le dispositif selon la présente invention peut comporter également un ou plusieurs ensembles régénérateurs (R). L'avantage du dispositif selon la présente invention réside dans le fait qu'une transition entre un réseau local de communication et un réseau de transmission ou le support de transmission optique (W1, W2) est supprimée pour la transmission de données sur des longues distances. On obtient ainsi d'une manière simple un raccourcissement du temps de retard pour la transmission de données et on économise des coûts supplémentaires par l'emploi d'un nombre réduit d'équipements.
PCT/EP2013/058019 2012-05-09 2013-04-17 Dispositif de transmission de données dans un support de transmission optique WO2013167355A1 (fr)

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DE102012207701A DE102012207701A1 (de) 2012-05-09 2012-05-09 System zur Datensignalübertragung in einem optischen Übertragungsmedium
DE102012207701.4 2012-05-09

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