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WO2008113267A1 - Procédé, système et dispositif de détection de connexion de fibres - Google Patents

Procédé, système et dispositif de détection de connexion de fibres Download PDF

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Publication number
WO2008113267A1
WO2008113267A1 PCT/CN2008/070139 CN2008070139W WO2008113267A1 WO 2008113267 A1 WO2008113267 A1 WO 2008113267A1 CN 2008070139 W CN2008070139 W CN 2008070139W WO 2008113267 A1 WO2008113267 A1 WO 2008113267A1
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WO
WIPO (PCT)
Prior art keywords
byte
path
tti
sink
source
Prior art date
Application number
PCT/CN2008/070139
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English (en)
Chinese (zh)
Inventor
Yan Liu
Wenzhong Fu
Original Assignee
Huawei Technologies Co., Ltd.
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 Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008113267A1 publication Critical patent/WO2008113267A1/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
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0793—Network aspects, e.g. central monitoring of transmission parameters

Definitions

  • the present invention relates to fiber optic technology, and in particular to a method, system and apparatus for detecting fiber optic connections. Background of the invention
  • a schematic diagram of a structure of a wavelength division optical fiber transmission network includes an optical wavelength converter (OTU), a combined/divided wave unit, a comb filter (ITL, Interleaver Unit), and light.
  • OTU optical wavelength converter
  • INL Interleaver Unit
  • Amplifiers Fiber Interface Units (FIUs)
  • FOUs Fiber Interface Units
  • the triangle in the figure indicates the light amplifier, and the trapezoid indicates the combined/divided unit.
  • the detection of the correctness of the optical fiber connection usually adopts the method of fiber search.
  • the method includes the following steps: First, the optical port flag signal is inserted into the source end of the optical fiber between two adjacent devices in turn, and the optical port flag signal is detected at the sink end. It is determined whether the detected source end and the sink end are connected by the optical fiber. Then, the fiber detection information of all the optical fibers in the path is uniformly aggregated to the network management tube, and the optical fiber connection in the detected path is determined to be correct.
  • the method for inserting the optical port marking signal is: adding electrical layer processing to other devices except the OTU, such as the combining/demultiplexing unit, the ITL, the optical amplifier, and the FIU. Since the OTU has an electrical layer treatment, there is no need to add an electric layer. deal with. Adding electrical layer processing requires modifying the original device and adding additional electrical layer devices.
  • point A is the source end of the path to be detected
  • point B is the sink end of the path to be detected.
  • the optical port flag signal is inserted at point A, that is, the electric layer processing is added to the combining/demultiplexing unit connected to the AB path, and if the fiber signal of the point B is detected from the point A, the point A and the B can be determined. Light between points The fiber is connected correctly.
  • the embodiments of the present invention provide a method for detecting an optical fiber connection, which can reduce the detection cost.
  • Embodiments of the present invention provide a system for detecting fiber connection, which can reduce detection cost.
  • Embodiments of the present invention provide an apparatus for detecting an optical fiber connection, which system can reduce the detection cost.
  • a method of detecting a fiber connection comprising the steps of:
  • the path sink receives the path trace identifier (TTI, Trail Trace Identifier) bytes sent by the source end of the path through the optical fiber transmission path;
  • TTI path trace identifier
  • the path sink determines whether the received ⁇ byte is consistent with the set ⁇ byte, and the set ⁇ byte is the ⁇ byte that is consistent with the ⁇ byte set by the path source end. If they are consistent, the path is The fiber connection is correct. Otherwise, the fiber connection of the path is incorrect.
  • a system for detecting an optical fiber connection comprising a path source end and a path sink end of the optical fiber transmission;
  • the source end of the path sends a TTI byte to the path sink, where the sent TTI byte is a path.
  • the path sink terminal determines whether the received ⁇ byte transmitted by the source end of the path is consistent with the set ⁇ byte, and the ⁇ byte set by the path sink end is a ⁇ word that is consistent with the ⁇ byte set by the path source end. If the parameters are the same, the fiber connection of the path is correct. Otherwise, the fiber connection of the path is incorrect.
  • a device for detecting an optical fiber connection comprising a receiving module and a determining module; the receiving module receiving the ⁇ byte sent by the source end of the path, and transmitting the ⁇ byte to the determining module; the determining module determining the received ⁇ word transmitted by the receiving module Whether the ⁇ byte set by the judging module is consistent, and the ⁇ byte of the setting is a ⁇ byte that is consistent with the ⁇ byte set by the source end of the path. If they are consistent, the optical connection of the path is correct, otherwise, The fiber connection for this path is incorrect.
  • the ⁇ byte is set at the source end of the optical fiber transmission path, and the ⁇ byte corresponding to the ⁇ byte set by the source end is set at the path sink end, and the ⁇ byte set at the source end of the path is set.
  • the byte is sent to the path sink; after receiving the ⁇ byte, the path sink determines whether the received ⁇ byte is the same as the ⁇ byte set at the path sink. If they are consistent, the fiber connection of the path is correct. Otherwise, The fiber connection for this path is incorrect. This eliminates the need to modify the original device and eliminate the need for additional electrical layer devices, reducing the cost of inspection.
  • 1 is a schematic structural view of a wavelength division optical fiber transmission network
  • Figure 2a is a schematic diagram of the transmission of the wavelength division fiber when the optical fiber is connected correctly;
  • Figure 2b is a schematic diagram of wavelength division fiber transmission when the fiber connection is incorrect
  • 3 is a flowchart of a method for detecting an optical fiber connection according to an embodiment of the present invention
  • 4 is a flowchart of another method for detecting an optical fiber connection according to an embodiment of the present invention
  • Figure 5 is a diagram of a system for detecting fiber optic connections in accordance with an embodiment of the present invention.
  • the basic idea of the embodiment of the present invention is: setting a ⁇ byte that is consistent with the ⁇ byte set by the source end on the sink end of the path that needs to detect the correctness of the optical fiber connection, and transmitting the TTI byte set at the source end to the sink end.
  • the sink end it is judged whether the fiber connection of the path is correct by judging whether the received ⁇ byte and the TTI byte set at the sink end are identical.
  • the TTI byte is the byte transmitted between the optical wavelength converters OTU.
  • the ⁇ byte is divided into three parts: a source identifier (SAPI, Souce Access Point Identifier), a sink identifier (DAPI, Destination Access Point Identifier), and a user flag.
  • SAPI Souce Access Point Identifier
  • DAPI Destination Access Point Identifier
  • user flag See Table 1, which is a structural table of TTI bytes. As can be seen from Table 1, the length of SAPI is 16 bytes, including SAPI[0], SAPI[1], and SAPI[15], where SAPI[0] is fixed to 0, SAPI[1], SAPI.
  • SAPI [2] and SAPI [3] are the national mark (CC), and the remaining part is the operator identification code assigned by the International Telecommunication Union Telecommunication Standardization Sector (ITU-T, ITU).
  • Carrier Code is composed of UAPC (Unique Access Point Code);
  • DAPI is 16 bytes in length, including SAPI[0], SAPI[1], and SAPI[15], where SAPI[0] is fixed.
  • SAPI [1], SAPI [2], and SAPI [3] are CCs, and the rest are composed of ICCs and UAPCs allocated by ITU-T.
  • the user flag is a byte that the user can customize. The ⁇ byte can identify a network node that contains information about the source and sink of the path.
  • FIG. 2a See Figure 2a for a schematic diagram of the WDM fiber transmission when the fiber is properly connected.
  • the transmitting end OTU is correctly connected to the first multiplexed optical port on the customer side of the multiplexer (MUX, Multiplexer), and the receiving end OTU fiber is also correctly connected to the customer side of the demultiplexer (DEMU, Demultiplexer).
  • MUX multiplexed optical port
  • DEMU demultiplexer
  • a combined wave on the mouth the ⁇ byte sent by the transmitting end OTU can be normally transmitted to the receiving end OTU.
  • the receiving end OTU receives the ⁇ The bytes will change accordingly. That is to say, when the optical fiber connection is correct, the TTI byte sent by the transmitting end OTU is the same as the TTI byte received by the receiving end OTU.
  • Figure 2b for a schematic diagram of the WDM fiber transmission when the fiber is connected incorrectly.
  • Figure 2b uses the path shown in Figure 2a.
  • the transmitting OTU is incorrectly connected to the third multiplexed optical port on the MUX client side, and the receiving OTU is still connected to the first client-side optical port of the DEMUX.
  • the ⁇ byte transmitted by the transmitting OTU changes, the ⁇ byte received by the receiving OTU does not change accordingly.
  • Step 301 Select a path that needs to detect whether the fiber connection is correct.
  • Step 302 The network management system saves the ⁇ bytes set in advance at the source end of the selected path; the network management system saves the ⁇ byte and ⁇ alarm suppression settings set in advance on the selected path sink end, and suppresses the ⁇ alarm.
  • the sink will report the ⁇ byte mismatch alarm. Therefore, before changing the ⁇ byte of the source to detect whether the ⁇ byte that should be received by the sink is consistent with the ⁇ byte actually received, it is necessary to save not only the ⁇ byte initially set by the sink but the related alarm suppression setting. It is also necessary to suppress the ⁇ alarm.
  • Step 303 Set the ⁇ byte to be sent at the source end of the selected path, and set the ⁇ byte to be received at the selected path sink end.
  • the ⁇ byte set for detecting the fiber connection set at the source end of the path is called a ⁇ byte, and is set by changing the user flag in the ⁇ byte of the source end of the path.
  • the ⁇ byte used to detect the fiber connection set by the path sink is called the ⁇ Byte, which is set as follows: Change the user flag in the ⁇ byte of the path sink.
  • the ⁇ byte of the path sink is the same as the ⁇ byte of the path source, which is the ⁇ byte that the path sink should receive when the fiber connection is correct.
  • the ⁇ byte actually received by the path sink is called the ⁇ byte.
  • the set ⁇ ⁇ byte is the same as the set ⁇ ⁇ byte, that is, the user flag in the should be sent in the path source and the receivable byte in the path sink.
  • the user logo is consistent.
  • Step 304 Determine whether the received ⁇ byte and the ⁇ ⁇ byte of the selected path are consistent. If they are consistent, the optical connection of the selected path is correct. Otherwise, the optical connection of the selected path is incorrect.
  • Step 305 the network management system backfills the pre-filled step 302, which is set in advance at the source end of the path.
  • the backfill is used to restore the ⁇ byte set by the network management system at the source end of the path before the fiber connection detection, and the ⁇ byte and ⁇ alarm suppression settings set by the path sink.
  • the network management system includes other tool software capable of controlling the optical fiber transmission network.
  • FIG. 4 is a flowchart of another method for detecting an optical fiber connection according to an embodiment of the present invention, the method includes the following steps:
  • Step 401 Select a path that needs to detect whether the fiber connection is correct.
  • Step 402 The network management system saves the ⁇ bytes set in advance at the source end of the selected path; the network management system saves the ⁇ byte and ⁇ alarm suppression settings set in advance on the selected path sink end.
  • Step 403 Set the ⁇ byte to be sent at the source end of the selected path, and set the ⁇ byte to be received at the destination of the selected path.
  • the set should be the same as the set receivable byte, that is, the user flag part in the should be sent in the source and the user in the receivable byte set in the sink.
  • the signs are partially consistent.
  • Step 404 Determine whether there is a reported mismatch alarm on the sink end of the selected path. If yes, it indicates that the fiber connection of the selected path is incorrect, or not, indicating that the fiber connection of the selected path is correct.
  • the source should send the byte and the sink's receivable byte is set to be the same. If it is consistent, the sink will not report the mismatch warning. If the fiber connection of the selected path is incorrect, a warning is issued.
  • Step 405 the network management system backfilling step 402 is set in advance at the source end of the path.
  • the backfill is used to restore the ⁇ byte set by the network management system at the source end of the path before the fiber connection detection, and the ⁇ byte and ⁇ alarm suppression settings set by the path sink.
  • the network management system includes other tool software capable of controlling the optical fiber transmission network.
  • a system for detecting an optical fiber connection includes a path source end and a path sink end.
  • the ⁇ byte is sent to the path sink, and the ⁇ byte is the ⁇ byte set by the source end of the path.
  • the path sink terminal determines whether the received ⁇ byte is consistent with the ⁇ ⁇ byte, and the receivable ⁇ byte is a ⁇ byte that is consistent with the ⁇ byte set by the source end of the path.
  • the connection is correct, otherwise the fiber connection of the path is incorrect.
  • the path sink includes a receiving module and a judging module.
  • the receiving module receives the ⁇ byte sent by the source end of the path and transmits it to the judging module.
  • the received ⁇ byte sent by the source of the path is the received ⁇ word of the path sink.
  • the judging module judges whether the receivable byte and the real receiving byte are consistent, and the receivable byte is a byte corresponding to the byte set by the source of the path, and if they are consistent, the fiber connection of the path Correct, otherwise, the fiber connection of the path is incorrect.
  • the method for determining whether the received ⁇ byte is consistent with the ⁇ ⁇ byte is the method described in steps 302 to 305, or the method described in steps 402 to 405.
  • the technical solution of the embodiment of the present invention sets the byte to be sent at the source end of the path, and the path of the path is consistent, to determine whether the fiber connection of the selected path is correct. In this way, no need to be like the prior art In this way, the original device is modified, and no additional electrical layer device is needed, which reduces the cost of detecting the fiber connection; and, the ⁇ byte used in this embodiment conforms to the ITU-T recommendation, and the device used in the prior art does not appear. The compatibility of the device from different vendors has caused the test to fail.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention concerne un procédé de détection de connexion de fibres qui comprend: la réception d'un multiplet d'identification TTI par un terminal de destination d'acheminement transmis par un terminal source d'acheminement par le biais d'une route de transmission sur fibre; et la détermination, par le terminal de destination d'acheminement, de la consistance du multiplet d'identification TTI reçu par rapport au multiplet TTI de réglage, le multiplet TTI de réglage étant un multiplet TTI consistant par rapport au multiplet TTI de réglage dans le terminal source d'acheminement. Si le multiplet est consistant, la connexion de la route est correcte. Dans le cas contraire, la connexion n'est pas correcte. Le mode de réalisation de la présente invention concerne également un système et un appareil destinés à la détection d'une connexion de fibres. Dans ce mode de réalisation, la technique utilisée pour détecter la connexion de fibres ne comprend pas de modification du dispositif de départ, ni d'augmentation du courant électrique traversant le dispositif, et permet de réduire le coût de détection.
PCT/CN2008/070139 2007-03-20 2008-01-18 Procédé, système et dispositif de détection de connexion de fibres WO2008113267A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN 200710086911 CN101272182A (zh) 2007-03-20 2007-03-20 一种检测光纤连接的方法、系统及装置
CN200710086911.0 2007-03-20

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WO2008113267A1 true WO2008113267A1 (fr) 2008-09-25

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CN103248420B (zh) * 2012-02-14 2017-02-22 华为技术有限公司 检测光纤连接的方法、标识光纤连接的方法及系统和装置
CN103368643A (zh) * 2012-04-01 2013-10-23 华为技术有限公司 光纤链路检测方法、系统和装置
CN103036611A (zh) * 2012-10-29 2013-04-10 上海电信工程有限公司 工程中的光路连接检测方法及其系统
CN103856258B (zh) * 2012-11-28 2017-02-01 华为技术有限公司 连纤检测方法和装置
CN103997426B (zh) * 2013-02-17 2018-11-16 中兴通讯股份有限公司 一种反向复用中子帧错序的检测方法及节点
CN103346832B (zh) * 2013-05-31 2016-03-30 华为技术有限公司 一种光纤连接状态的检测方法及装置
CN113346346B (zh) * 2021-08-06 2022-01-04 阿里云计算有限公司 光纤放大器控制方法、装置、系统、传输节点和存储介质
CN117544232B (zh) * 2024-01-09 2024-06-18 深圳国人无线通信有限公司 一种直放站的传输路径检测方法和系统

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US20040165888A1 (en) * 1998-12-14 2004-08-26 Tellabs Operations, Inc. Optical network connection test apparatus and methods
CN1738213A (zh) * 2004-08-18 2006-02-22 华为技术有限公司 防错连的方法
CN1878165A (zh) * 2005-06-08 2006-12-13 华为技术有限公司 一种标签交换路径连通性的检测方法

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US20040165888A1 (en) * 1998-12-14 2004-08-26 Tellabs Operations, Inc. Optical network connection test apparatus and methods
CN1738213A (zh) * 2004-08-18 2006-02-22 华为技术有限公司 防错连的方法
CN1878165A (zh) * 2005-06-08 2006-12-13 华为技术有限公司 一种标签交换路径连通性的检测方法

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