EP3797482A1 - Procédé de correction d'erreur pour le transfert de données unidirectionnel - Google Patents

Procédé de correction d'erreur pour le transfert de données unidirectionnel

Info

Publication number
EP3797482A1
EP3797482A1 EP19745995.1A EP19745995A EP3797482A1 EP 3797482 A1 EP3797482 A1 EP 3797482A1 EP 19745995 A EP19745995 A EP 19745995A EP 3797482 A1 EP3797482 A1 EP 3797482A1
Authority
EP
European Patent Office
Prior art keywords
data
forward error
coding
error protection
communication channels
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19745995.1A
Other languages
German (de)
English (en)
Inventor
Tiago Gasiba
Matthias Seifert
Martin Wimmer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Mobility GmbH
Original Assignee
Siemens Mobility 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 Mobility GmbH filed Critical Siemens Mobility GmbH
Publication of EP3797482A1 publication Critical patent/EP3797482A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0041—Arrangements at the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0047—Decoding adapted to other signal detection operation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L2001/0092—Error control systems characterised by the topology of the transmission link
    • H04L2001/0096—Channel splitting in point-to-point links
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2101/00—Indexing scheme associated with group H04L61/00
    • H04L2101/60—Types of network addresses
    • H04L2101/618—Details of network addresses
    • H04L2101/663—Transport layer addresses, e.g. aspects of transmission control protocol [TCP] or user datagram protocol [UDP] ports

Definitions

  • a common method of transmitting data over a communication channel uses backward error correction.
  • the data to be transmitted are contained in a file, the file being divided into several parts; and the sections are each transmitted by means of a method according to one of the preceding claims.
  • the sections can be transmitted simultaneously.
  • the file can, for example, be divided into successive sections and the sections can be transmitted interleaved. In this way, a sliding window can be formed at each section, in which data is transferred.
  • the windows of the sections can be moved over the data to the same extent. This can be particularly advantageous in the case of a very large file.
  • the communication channel can be connected to the interfaces by means of a data diode in order to prevent the receiver from sending data to another location.
  • a data diode To protect the receiving device, an incoming data slide can be provided, which prevents data from being sent.
  • Figure 3 represent a variant of the method.
  • the data memory 120 is set up for storing a file or before given structured data which are to be transmitted to the receiving device 110.
  • the data storage 120 can also be replaced by an interface via which data to be transmitted can be obtained.
  • the data diode 140 is set up to convey data only in a predetermined direction, which is indicated by the direction of the arrow in FIG. 1.
  • the symbol of a diode borrowed from electrical engineering, shows that an information flow against the direction of the arrow is prevented.
  • Such communication is also called simplex communication.
  • a dedicated commercial solution can be used to implement a data diode 140.
  • a network logger can be used, which can provide data to the communication channel unidirectionally and without feedback.
  • Such a device is also known as a "data capture unit".
  • the data diode 140 and the interface 135 are interchanged in their positions.
  • the processing device 132 preferably comprises a programmable microcomputer or microcontroller and is set up to control components of the transmission device 105.
  • the processing device 132 can also include one or more of the further elements of the transmission device 105.
  • data to be transmitted is first demultiplexed by the transmitting device 105 and then encoded.
  • coding can also be carried out first and then demultiplexing.
  • the elements 125 and 130 can be interchanged in their positions in the transmitting device 105; between them, only one connection is required instead of several as shown.
  • Demultiplexing and coding on the part of the transmitting device 105 and decoding and multiplexing on the part of the receiving device 110 may be coordinated with one another.
  • Demultiplexing involves merging fragments into a file or data stream.
  • the decoding includes the removal of redundant information that has been added to the transmitting device 105 at least. It is preferably first checked on the basis of checksums over certain portions of data whether a defect in the data has occurred during the transmission. Errors can usually be determined for a section up to a first predetermined number of defective bits. Errors up to a second predetermined number of bits can also be repaired, the second number usually being less than the first.
  • decoding can also be suspended until the received data is used. For this purpose, the preferably demultiplexed but not yet decoded data can first be stored in the data memory 120. If the data is to be accessed, the required decoding can be carried out immediately.
  • FIG. 2 shows a schematic flow diagram of a method 200 for transmitting data, in particular by means of a system 100 as shown in FIG. 1.
  • data is available in an exemplary block that comprises six units.
  • a unit can, for example, correspond to a UDP packet or its payload.
  • a first step 205 the data are encoded with a forward error protection coding, with information being added so that eight units of data are produced.
  • a turbo encoder consists of at least two coders connected in parallel or in series for elementary coding.
  • the elementary encoders each represent a specific channel code.
  • the first encoder receives the useful data in unchanged form, and its output is passed on to the second encoder as an input via a so-called interleaver, which changes the data sequence according to certain rules. If there are only two coders, the second encoder finally delivers the data sequence to be transmitted.
  • the data is multiplexed in a step 220, so that the individual units are again in the same order as before the step 210.
  • the result can optionally be stored in a step 225.
  • decoding can take place in a step 230, in which the redundant information that was added in step 205 is removed again.
  • the data can then be transferred or saved again.
  • FIG. 3 shows a variant 300 of the method 200 from FIG. 2.
  • the latter should not be processed sequentially, but rather be broken down into several parts 310, in order to then use the parts 310 in a manner already described herein To transmit communication channels 115.
  • each part 310 In the present example, four parts 310 and four communication channels 115 are provided. Within the scope of the illustration, eight data units are to be transmitted from each part 310. For this purpose, units 1 and 5 are transmitted via a first communication channel 115.1 from a first part 310.1, units 1 and 5 from a second part 310.2 and units 1 and 5 from a third part 310.3. The units of the units transmitted via the other communication channels 115 Parts 310 can be read from FIG. 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

L'invention concerne un procédé de transfert de données unidirectionnel de données d'un émetteur vers un récepteur, qui comprend les étapes suivantes : démultiplexer les données en plusieurs flux de données ; coder les flux de données à chaque fois au moyen d'un codage de protection contre les erreurs sans voie de retour ; envoyer les flux de données sur des canaux de communication associés de l'émetteur vers le récepteur ; corriger une erreur possible dans l'un des flux de données reçus sur la base du codage de protection contre les erreurs sans voie de retour ; supprimer le codage de protection contre les erreurs sans voie de retour des données; et multiplexer les données.
EP19745995.1A 2018-08-03 2019-07-09 Procédé de correction d'erreur pour le transfert de données unidirectionnel Withdrawn EP3797482A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018213065.5A DE102018213065A1 (de) 2018-08-03 2018-08-03 Fehlerkorrekturverfahren für unidirektionalen Datentransfer
PCT/EP2019/068402 WO2020025266A1 (fr) 2018-08-03 2019-07-09 Procédé de correction d'erreur pour le transfert de données unidirectionnel

Publications (1)

Publication Number Publication Date
EP3797482A1 true EP3797482A1 (fr) 2021-03-31

Family

ID=67480164

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19745995.1A Withdrawn EP3797482A1 (fr) 2018-08-03 2019-07-09 Procédé de correction d'erreur pour le transfert de données unidirectionnel

Country Status (5)

Country Link
US (1) US20210288749A1 (fr)
EP (1) EP3797482A1 (fr)
CN (1) CN112470413A (fr)
DE (1) DE102018213065A1 (fr)
WO (1) WO2020025266A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6490243B1 (en) * 1997-06-19 2002-12-03 Kabushiki Kaisha Toshiba Information data multiplex transmission system, its multiplexer and demultiplexer and error correction encoder and decoder
US7304990B2 (en) * 2000-02-03 2007-12-04 Bandwiz Inc. Method of encoding and transmitting data over a communication medium through division and segmentation
US8468414B2 (en) * 2009-08-27 2013-06-18 Icomm Technologies Inc. Method and apparatus for a wireless mobile system implementing beam steering phase array antenna
KR100674423B1 (ko) * 2001-01-19 2007-01-29 엘지전자 주식회사 송/수신 시스템 및 데이터 처리 방법
US8839310B2 (en) * 2005-03-29 2014-09-16 Thomson Licensing Method and apparatus for improving reception of wireless signals using spartial redundancy
US20100021166A1 (en) * 2008-02-22 2010-01-28 Way Winston I Spectrally Efficient Parallel Optical WDM Channels for Long-Haul MAN and WAN Optical Networks
KR101738867B1 (ko) * 2010-07-07 2017-05-25 에스케이텔레콤 주식회사 오류정정을 위한 방송 신호 부호화 및 복호화 방법, 이를 위한 방송 신호 송수신 장치 및 이를 위한 시스템
KR20120137198A (ko) * 2011-06-11 2012-12-20 삼성전자주식회사 통신 시스템에서 패킷 송수신 장치 및 방법

Also Published As

Publication number Publication date
DE102018213065A1 (de) 2020-02-06
CN112470413A (zh) 2021-03-09
WO2020025266A1 (fr) 2020-02-06
US20210288749A1 (en) 2021-09-16

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