WO2009065341A1 - Terminal de réseau optique et terminal de ligne optique - Google Patents

Terminal de réseau optique et terminal de ligne optique Download PDF

Info

Publication number
WO2009065341A1
WO2009065341A1 PCT/CN2008/072935 CN2008072935W WO2009065341A1 WO 2009065341 A1 WO2009065341 A1 WO 2009065341A1 CN 2008072935 W CN2008072935 W CN 2008072935W WO 2009065341 A1 WO2009065341 A1 WO 2009065341A1
Authority
WO
WIPO (PCT)
Prior art keywords
unit
optical power
information
optical
ont
Prior art date
Application number
PCT/CN2008/072935
Other languages
English (en)
Chinese (zh)
Inventor
Lue CHEN
Sulin Yang
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 WO2009065341A1 publication Critical patent/WO2009065341A1/fr

Links

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
    • H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
    • H04B10/0775—Performance monitoring and measurement of transmission parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H04J3/1694—Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers

Definitions

  • the utility model relates to the technical field of communications, in particular to an optical network terminal and a light path terminal. Background technique
  • the PON (Passive Optical Network) system consists of an OLT (Optical Line Terminal), an Optical Network Terminal (ONT), and an Optical Distribution Network (ODN).
  • OLT Optical Line Terminal
  • ONT Optical Network Terminal
  • ODN Optical Distribution Network
  • Network including the optical splitter
  • both the OLT and the ONT contain devices that can transmit and receive optical signals (optical transceivers).
  • the OLT and the ONT communicate with each other through the optical fibers of the ODN.
  • the optical signals are transmitted in the ODN due to various Causes of intensity attenuation, such as different fiber lengths, excessive bending of the fiber, compression of the fiber, loose optical connectors, changes in ambient temperature, etc., all affect the light attenuation, so the optical power intensity of the OLT reaching the ONT will often change.
  • the embodiments of the present invention provide an optical network terminal and an optical line terminal, which solve the problem that the user cannot easily and quickly learn the optical power intensity and the like, thereby failing to install and judge the cause of the fault conveniently and quickly.
  • An embodiment of the present invention provides an optical network terminal device, including:
  • a power measuring unit for measuring the power of the optical signal from the OLT
  • a receiving unit for receiving transmitted optical power information from the OLT
  • a calculating unit for determining an optical power loss of the optical path; an indicating unit for indicating optical power information connected to the calculating unit, the optical power information comprising: optical power loss information of the optical path and/or optical power information of the ONT .
  • the embodiment of the present invention further provides an OLT, including:
  • An acquiring unit for acquiring transmission optical power information and time synchronization information corresponding to the transmission optical power
  • a transmitting unit connected to the acquiring unit, configured to send the sending optical power information acquired by the acquiring unit and time synchronization information corresponding to the transmitting optical power to an ONT, so that the ONT is configured according to the The transmission optical power information and the time synchronization information determine the optical power loss of the optical path.
  • the embodiment of the present invention solves the problem that the existing ONT cannot indicate the optical path loss or the received optical power and the transmitted optical power information, can improve the efficiency of the ONT installation, greatly shorten the installation time of the ONT, and make the installation of the ONT friendly and convenient.
  • Ordinary users can install ONTs themselves to reduce the deployment cost of operators. In the process of installing and using ONTs, it is convenient to judge the cause of the failure and reduce the maintenance cost of the operator.
  • FIG. 1 is a schematic view showing the composition of an ONT according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic diagram of the configuration of the indication unit of the ONT according to the first embodiment of the present invention
  • FIG. 3 is a schematic diagram of the appearance of the indication unit of the ONT according to the first embodiment of the present invention
  • FIG. 4 is an indication unit of the ONT according to the first embodiment of the present invention
  • FIG. 5 is a schematic diagram of the composition of an ONT according to Embodiment 2 of the present invention.
  • FIG. 6 is a schematic diagram showing the composition of an OLT according to Embodiment 3 of the present invention. detailed description
  • FIG. 1 is a schematic view showing the composition of an ONT according to an embodiment of the present invention. As shown in the figure, the ONT of this embodiment includes:
  • a receiving unit 104 configured to receive the transmitted optical power information delivered by the OLT, where the optical power information includes an optical power value PTX_OLT;
  • the computing unit 106 may specifically calculate the optical power loss of the optical path according to the difference between the PTX OLT and the PRX_ONT - specifically, the optical power loss OLODN of the ODN;
  • an indicating unit 108 for indicating optical power information where the optical power information includes: optical power loss information of the optical path, ONT optical power information, and the like.
  • the ONT may further include: connected to the computing unit, configured to save The storage unit 110 stores the result of the calculation unit.
  • the storage unit is configured to record historical information of optical power loss information, ONT optical power information, and the like of the storage optical path for routine maintenance and monitoring.
  • the indicating unit 108 may be specifically provided with a visual prompt function, including a display circuit 202 and an information display panel 204.
  • the display circuit is connected to the information display panel, wherein the information display panel is configured to display optical power information, optical power.
  • the information includes at least: optical power loss information of the optical path, and optical power information of the ONT (for example, information of the transmitted optical power and/or the received optical power).
  • the measured value of the downlink received optical power and/or the uplink transmitted optical power may be displayed in a percentage manner, or may be a value directly displayed. When displayed as a percentage, it can be in the form of a progress bar, as shown in Figure 3, or directly as a percentage.
  • the percentage can also be calculated based on the upper and lower thresholds of the set optical power/optical power loss.
  • the ONT of this embodiment can be either a GPON ONT or an EPON ONT, or another type of PON ONT.
  • the data calculated by the computing unit 106 can be indicated (displayed) on the ONT by the indicating unit 108 in various manners.
  • the present invention is not limited thereto.
  • the basic LED display can be used, as shown in FIG. Or you can use the display screen such as LED or LCD to directly display the optical power/optical power loss data or percentage value.
  • the alarm threshold can be set, and the ONT sends alarms such as sounds and indicators according to the alarm threshold.
  • the indicating unit may be an audio unit, and is connected to the calculating unit, and is configured to output the optical power information in an audio form, where the optical power information includes at least: optical path optical power loss information and ONT optical power information.
  • the ONT can be measured or measured via the communication interface.
  • the calculated data such as optical power/optical power loss is output to other external display devices for display.
  • the ONT may have an error in calculating the ODN loss. To eliminate this error, the following method can be used:
  • the ONT measurement itself receives the optical power PRX_ONT sequence and puts time synchronization information
  • the OLT records the corresponding time synchronization information while measuring the transmitted optical power, and sends the transmitted optical power together with the time synchronization information to the ONT;
  • the ONT After receiving the transmitted optical power information and the time synchronization information sent by the OLT, the ONT calculates the optical power loss of the ODN according to the same optical power information of the time synchronization, so that the optical power loss information of the optical path can be calculated more accurately;
  • the ONT displays the optical power loss information.
  • the time synchronization information mentioned above may include: a GPON super-frame count in the GPON, or a partial field thereof, or a time synchronization data broadcast by the OLT to the ONT.
  • the specific implementation is as shown in FIG. 5.
  • the ONT provided in this embodiment further includes:
  • time information herein may specifically be time synchronization information
  • a time receiving unit 114 configured to receive the time synchronization information delivered by the OLT and corresponding to the transmitted optical power received by the receiving unit, connected to the receiving unit.
  • This embodiment provides an OLT that can be used in conjunction with the ONTs of Embodiments 1 and 2.
  • the OLT includes:
  • An acquiring unit for acquiring transmission optical power information and time synchronization information corresponding to the transmission optical power; a sending unit connected to the acquiring unit, configured to send the transmitting optical power information and time synchronization information corresponding to the transmitting optical power to the ONT, to provide the ONT, and enable the ONT to synchronize with the transmitted optical power information according to the time.
  • the information determines the optical power loss of the optical path.
  • the sending unit specifically includes: a first sending unit and a second sending unit, where the first sending unit is connected to the second sending unit, where
  • a first sending unit configured to send the transmitted optical power information to the ONT
  • a second sending unit configured to send time synchronization information corresponding to the transmitted optical power to the ONT.
  • the first transmitting unit is specifically an optical power information transmitting unit 604, and the second transmitting unit is specifically a time synchronization information transmitting unit 606.
  • the OLT of this embodiment may further include: a storage unit 608 connected to the transmitting unit and configured to store the transmitted optical power information transmitted by the transmitting unit and the time synchronization information corresponding to the optical power.
  • the storage unit is used for recording historical information for storing the above optical power information and the like for routine maintenance and monitoring.
  • the problem of the optical path can be solved in advance according to the information displayed by the ONT.

Landscapes

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

Abstract

Le présent modèle d'utilité concerne un terminal de réseau optique comprenant : unité de mesure de puissance qui mesure la puissance des signaux optiques provenant du terminal de ligne optique OLT ; une unité de réception qui reçoit les informations de puissance de transmission optique envoyées par l'OLT ; connectée à l'unité de mesure de puissance et à l'unité de réception, une unité de calcul qui détermine la perte de puissance optique du trajet de la lumière, en fonction de la puissance des signaux optiques provenant de l'OLT, mesurée par l'unité de mesure de puissance, et des informations de puissance de transmission optique reçues par l'unité de réception ; et une unité d'indication qui fournit des informations de puissance optique. Le présent modèle d'utilité concerne également un terminal de ligne optique comprenant : une unité d'obtention qui obtient des informations de puissance de transmission optique et des informations de synchronisation temporelle correspondant à la puissance de transmission optique ; une unité de transmission connectée à l'unité d'obtention. La mise en œuvre du présent modèle d'utilité permet d'améliorer l'efficacité d'installation de l'ONT, de raccourcir le temps nécessaire pour l'installation de l'ONT, et de réduire le coût de déploiement et de maintenance pour les opérateurs de télécommunications.
PCT/CN2008/072935 2007-11-07 2008-11-04 Terminal de réseau optique et terminal de ligne optique WO2009065341A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200720170499.6 2007-11-07
CN 200720170499 CN201118594Y (zh) 2007-11-07 2007-11-07 一种光网络终端和光线路终端

Publications (1)

Publication Number Publication Date
WO2009065341A1 true WO2009065341A1 (fr) 2009-05-28

Family

ID=39993188

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/072935 WO2009065341A1 (fr) 2007-11-07 2008-11-04 Terminal de réseau optique et terminal de ligne optique

Country Status (2)

Country Link
CN (1) CN201118594Y (fr)
WO (1) WO2009065341A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201118594Y (zh) * 2007-11-07 2008-09-17 华为技术有限公司 一种光网络终端和光线路终端
CN101795158B (zh) * 2010-03-23 2014-03-19 中兴通讯股份有限公司 一种测量光网络单元接收光功率的方法及装置
JP4898948B1 (ja) * 2010-09-10 2012-03-21 株式会社フジクラ データ伝送装置、データ伝送方法、およびデータ伝送装置制御プログラム
CN102026052A (zh) * 2011-01-04 2011-04-20 中兴通讯股份有限公司 故障诊断方法和系统
CN114944868A (zh) * 2022-03-22 2022-08-26 江苏科大亨芯半导体技术有限公司 一种无源光网络的调顶系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5825516A (en) * 1996-07-25 1998-10-20 Hewlett-Packard Company Optical power meter for detecting loss factors in fiber optic communications
US20030053165A1 (en) * 2000-06-30 2003-03-20 Fujitsu Limited Method for measuring transmission loss in optical transmission line for test, and slave station, master station, and optical communication system using the method
CN1612506A (zh) * 2003-10-28 2005-05-04 日本电气株式会社 传输损耗和增益测量方法、发射机－接收机和发射－接收系统
WO2006096668A2 (fr) * 2005-03-07 2006-09-14 Nettest North America, Inc. Dispositif de mesure de pertes dans des reseaux optiques passifs et procede d'utilisation
CN101023606A (zh) * 2004-06-30 2007-08-22 西门子公司 在pon中获得光功率电平的方法和装置
CN201118594Y (zh) * 2007-11-07 2008-09-17 华为技术有限公司 一种光网络终端和光线路终端

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5825516A (en) * 1996-07-25 1998-10-20 Hewlett-Packard Company Optical power meter for detecting loss factors in fiber optic communications
US20030053165A1 (en) * 2000-06-30 2003-03-20 Fujitsu Limited Method for measuring transmission loss in optical transmission line for test, and slave station, master station, and optical communication system using the method
CN1612506A (zh) * 2003-10-28 2005-05-04 日本电气株式会社 传输损耗和增益测量方法、发射机－接收机和发射－接收系统
CN101023606A (zh) * 2004-06-30 2007-08-22 西门子公司 在pon中获得光功率电平的方法和装置
WO2006096668A2 (fr) * 2005-03-07 2006-09-14 Nettest North America, Inc. Dispositif de mesure de pertes dans des reseaux optiques passifs et procede d'utilisation
CN201118594Y (zh) * 2007-11-07 2008-09-17 华为技术有限公司 一种光网络终端和光线路终端

Also Published As

Publication number Publication date
CN201118594Y (zh) 2008-09-17

Similar Documents

Publication Publication Date Title
US8290364B2 (en) Method, optical network and network device for locating fiber events
CN1794613B (zh) 无源光网络监控方法和包括中心站和光网络单元的无源光网络
CN101296034B (zh) 传输监测信息方法和装置、及无源光网络系统
KR100663462B1 (ko) 수동형 광 가입자 망
CA2830840C (fr) Systeme pour la certification d'un reseau optique passif et pour la detection de problemes et d'avaries dans les derniers segments de fibre
CN101820558B (zh) 一种无源光网络检测长发光onu的方法
US7428382B2 (en) System and method for performing in-service fiber optic network certification
CN101232328B (zh) 一种定位分支光纤的事件点的方法、光网络及网络设备
CN102136868B (zh) 电信基站基带处理单元bbu-射频拉远模块rru故障判断方法
CN102055523A (zh) 一种诊断无源光网络故障的方法、设备及系统
US8913887B2 (en) Passive optical fiber plant analysis
CN101217313A (zh) 一种使用otdr的无源光网络光纤故障诊断方法
WO2009065341A1 (fr) Terminal de réseau optique et terminal de ligne optique
CN101247182A (zh) 一种无源光网络中的功率控制方法
CN103067074B (zh) 无源光网络光功率计校准装置及校准方法
CN102388549B (zh) 无源光网络中光纤链路的检测方法、系统和装置
US20090238558A1 (en) Station terminal device, communication system, subscriber device management method, and recording medium recording program for station terminal device
WO2016023331A1 (fr) Procédé, dispositif et système permettant de déterminer une relation de connexion d'un réseau optique
JP2014121009A (ja) 通信監視装置、通信監視方法及び光線路試験システム
CN101499853B (zh) 一种光路状态的测量方法、光网络和网络设备
CN103269296A (zh) 一种无源光网络系统用户端检测系统及检测方法
CN202231724U (zh) 无源光网络光功率计校准装置
US20210218469A1 (en) Submarine cable fault determining method and apparatus
JP5949228B2 (ja) 通信監視装置および通信監視方法
CN218868229U (zh) 一种光端机测试系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08852703

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08852703

Country of ref document: EP

Kind code of ref document: A1