CN201118594Y - An optical network terminal and optical line terminal - Google Patents

An optical network terminal and optical line terminal Download PDF

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Publication number
CN201118594Y
CN201118594Y CN 200720170499 CN200720170499U CN201118594Y CN 201118594 Y CN201118594 Y CN 201118594Y CN 200720170499 CN200720170499 CN 200720170499 CN 200720170499 U CN200720170499 U CN 200720170499U CN 201118594 Y CN201118594 Y CN 201118594Y
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China
Prior art keywords
information
optical
ont
transmitting
power
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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.)
Expired - Fee Related
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CN 200720170499
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Chinese (zh)
Inventor
陈略
杨素林
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN 200720170499 priority Critical patent/CN201118594Y/en
Application granted granted Critical
Publication of CN201118594Y publication Critical patent/CN201118594Y/en
Priority to PCT/CN2008/072935 priority patent/WO2009065341A1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • 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

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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

The utility model discloses an optical network terminal (ONT). The optical network terminal comprises a power measurement unit used for measuring the optical signal power from an optical circuit terminal OLT; a receiving unit used for receiving the transmitting optical power information transmitted by the optical circuit terminal OLT; a computation unit respectively connected with the power measurement unit and the receiving unit and used for confirming the optical power loss of the optical circuit according to the optical circuit terminal OLT optical signal power measured by the power measurement unit and the transmitting optical power information received by the receiving unit; and an indication unit used for indicating the optical power information. The utility model also discloses an optical circuit terminal, comprising an obtaining unit used for obtaining the transmitting optical power information and the time synchronous information corresponding to the transmitting optical power; and a transmitting unit connected with the obtaining unit. With the practice of the utility model, the set efficiency of the ONT is improved, the set time of the ONT is shortened and the disposition and maintenance cost of the operators is reduced.

Description

A kind of Optical Network Terminal and optical line terminal
Technical field
The utility model relates to the communications field, relates in particular to a kind of Optical Network Terminal and optical line terminal that has luminous power information deixis.
Background technology
The PON system is made of local side apparatus OLT, remote equipment ONT and ODN unit such as (containing optical splitter), all comprises the device (light Transceiver) that can carry out the light transmitting-receiving among OLT and the ONT, and OLT and ONT carry out mutual communication by the optical fiber of ODN; Can be when light signal transmits in ODN because a variety of causes produces the strength retrogression, as fiber lengths difference, optical fiber overbending, optical fiber suffer oppression, the light joint is loosening, variation of ambient temperature etc., the capital influences optical attenuation, so OLT arrives the often variation of optical power intensity of ONT.
Because the influence of various factors such as environment, also can often the changing of ONT transmitting optical power.
In the PON system, generally all standard definition the has been arranged permission attenuation range of ODN and the reference optical power that ONT receives.In actual engineering, when the construction of ODN network is finished, or when new user applies access service is arranged, need the professional and technical personnel of operator with the actual light power attenuation of going up special test equipment test ODN, with the luminous power of the reception of guaranteeing ONT in service in normal range (NR).
After customer service is opened, thereby can cross the professional undesired of the low user of causing because of a variety of causes causes the received optical power of ONT.It is improper that this usually is that user oneself lays optical fiber, or loosening grade of light joint cause, but the user can't oneself obtain judgement information, can only accuse fault to the Virtual network operator Shen, is with the instrumentation orientation problem of calling by Virtual network operator arrangement technical staff.To operator, this be one very consuming time and increase the process of operation cost.
The utility model content
The utility model embodiment technical problem to be solved is, a kind of optical network terminal (ONT) is provided, and solves the user and can't learn information such as optical power intensity quickly and easily, thereby problem with the failure judgement reason can't be installed quickly and easily.
In order to solve the problems of the technologies described above, the utility model embodiment provides a kind of optical network terminal, comprising:
Be used to measure power measurement unit from the optical signal power of optical line terminal OLT;
Be used to receive receiving element from the transmitting optical power information of optical line terminal OLT;
Be connected with receiving element with described power measurement unit respectively, be used for the transmitting optical power information that optical signal power and described receiving element according to the measured optical line terminal OLT of described power measurement unit receive, determine the computing unit of the optical power loss of light path;
Be connected with described computing unit, be used to indicate the indicating member of luminous power information, described luminous power information comprises: the optical power loss information of light path and/or the luminous power information of ONT.
The utility model embodiment also provides a kind of optical line terminal OLT, it is characterized in that, comprising:
Be used to obtain transmitting optical power information and with the acquiring unit of the corresponding time synchronization information of described transmitting optical power;
The transmitting element that is connected with described acquiring unit, be used for transmitting optical power information that acquiring unit is got access to and send to Optical Network Terminal ONT, so that ONT determines the optical power loss of light path according to described transmitting optical power information and time synchronization information with the corresponding time synchronization information of described transmitting optical power.
The utility model embodiment has solved the problem of failing to indicate optical path loss or received optical power, transmitting optical power information on the existing ONT, can improve the efficient that ONT installs, and shortens the set-up time of ONT greatly; Make the installation of ONT become friendly and easy, ONT just can install in domestic consumer oneself, reduces the lower deployment cost of operator; Installing and using in the process of ONT, the failure judgement reason reduces the maintenance cost of operator easily.
Description of drawings
Fig. 1 is the composition schematic diagram of the Optical Network Terminal of the utility model embodiment one;
Fig. 2 is the composition schematic diagram of indicating member of the Optical Network Terminal of the utility model embodiment one;
Fig. 3 is the schematic appearance of indicating member of the Optical Network Terminal of the utility model embodiment one;
Fig. 4 is the schematic diagram that the indicating member of the Optical Network Terminal of the utility model embodiment one shows with the digital form of percentage;
Fig. 5 is the composition schematic diagram of the Optical Network Terminal of the utility model embodiment two;
Fig. 6 is the composition schematic diagram of the optical line terminal of the utility model embodiment three.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, the utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment one
Fig. 1 is the composition schematic diagram of the Optical Network Terminal ONT of the utility model embodiment.As shown in the figure, the ONT of present embodiment comprises:
Be used to measure the power measurement unit 102 from the optical signal power of optical line terminal OLT, the optical power value that records is designated as P RX_ONT
Be used to receive the receiving element 104 of the transmitting optical power information that OLT issues, this luminous power information comprises optical power value P TX_OLT
Be connected with receiving element with power measurement unit respectively, be used for the transmitting optical power information that optical signal power and described receiving element according to the measured optical line terminal OLT of described power measurement unit receive, calculate the computing unit 106 of the optical power loss of light path; Particularly, this computing unit can be according to P TX_OLTAnd P RX_ONTDifference calculate the optical power loss of light path---specifically can be the optical power loss OL of ODN OND
Be connected with described computing unit, be used to indicate the indicating member 108 of luminous power information, described luminous power information comprises: information such as the optical power loss information of light path, ONT luminous power information.
Further, this ONT can also comprise: be connected with computing unit, be used for the memory cell 110 of storage computation unit result of calculation.This memory cell is used to write down the history information of the optical power loss information, ONT luminous power information of storage light path etc., so that regular maintenance and monitoring.
As shown in Figure 2, indicating member 108 specifically can be to possess the visual cues function, comprise display circuit 202 and information display panel 204, display circuit is connected with information display panel, wherein, information display panel is used for the display light power information, and luminous power information comprises at least: and the optical power loss information of light path, the luminous power information of ONT (such as: the information of transmitting optical power and/or received optical power).
Can be that mode with percentage shows the descending received optical power of measurement and/or the value of up transmitting optical power on ONT, also can be directly to show the value of measuring.When with percentages show, can be the form of progress bar, as shown in Figure 3, or direct digital form demonstration with percentage.
During with percentages show, be reception, the transmitting optical power scope that the relative standard defines.If the received optical power scope of standard definition is-10dBm～-30dBm, scope is 20dB, if the received optical power that records is-20dBm that then the percentage of Xian Shiing can be (20-(30))/20=50%.
Percentage also can convert according to the threshold values up and down of the luminous power/optical power loss that is provided with.
The ONT of present embodiment both can be GPON ONT, also can be EPON ONT, perhaps the PON ONT of other type.
The data that calculate by computing unit 106, can adopt multiple mode on ONT, to indicate (demonstration) output by indicating member 108, the utility model is unqualified to this, such as adopting basic LED to show, as shown in Figure 4, perhaps can adopt the direct display light power of display screen/optical power loss data or percentages such as LED or LCD.Alarm threshold value can be set, and ONT sends warning information such as sound, indicator light according to the setting of alarm threshold value.For example, indicating member can be audio unit, is connected with computing unit, is used for luminous power information is exported with audio form, and described luminous power information comprises at least: light path optical power loss information, ONT luminous power information.
As the expansion of ONT information output, last can the outputing on other external connection display equipment by the data such as luminous power/optical power loss that communication interface will be measured or calculate of ONT shows.
Embodiment two
Issue at OLT/during broadcast transmission luminous power information, because exist data to transmit time-delay, can there be error in ONT when calculating the ODN loss, in order to eliminate this error, can handle in the following ways:
1, the own received optical power P of ONT measurement RX_ONTSequence, and stamp time synchronization information;
2, OLT notes corresponding time synchronization information when measuring transmitting optical power, and transmitting optical power and time synchronization information are sent to ONT together;
3, after ONT received the transmitting optical power and time synchronization information that OLT sends, the information calculations ODN optical power loss identical according to time synchronized can calculate the optical power loss information of light path so more accurately;
4, ONT display light power loss information.
Above-mentioned time synchronization information comprises: can adopt GPON super-frame counting in GPON, perhaps its part field or OLT are to time synchronized data of ONT broadcasting etc.
Specific implementation as shown in Figure 5, the ONT that present embodiment provides further comprises on the basis of embodiment one:
Be connected with power measurement unit, be used for the time record cell 112 of the corresponding temporal information of the measured light signal of recording power measuring unit; Here " temporal information " specifically can be time synchronization information;
Be connected with receiving element, be used to receive the time receiving element 114 of the corresponding time synchronization information of transmitting optical power that optical line terminal OLT issues, that receive with described receiving element.
Embodiment three
Present embodiment provides a kind of optical line terminal OLT, this OLT use that can match with embodiment one and two ONT.This OLT comprises:
Be used to obtain transmitting optical power information and with the acquiring unit of the corresponding time synchronization information of described transmitting optical power;
The transmitting element that is connected with described acquiring unit, be used for sending to Optical Network Terminal ONT, make ONT determine the optical power loss of light path according to described transmitting optical power information and time synchronization information to offer ONT with transmitting optical power information and with the corresponding time synchronization information of described transmitting optical power.This transmitting element specifically comprises: first transmitting element and second transmitting element, and first transmitting element is connected with second transmitting element, wherein,
First transmitting element is used for transmitting optical power information is sent to Optical Network Terminal ONT;
Second transmitting element is used for and will sends to Optical Network Terminal ONT with the corresponding time synchronization information of described transmitting optical power.
As shown in Figure 6, first transmitting element is specially luminous power information transmitting unit 604, the second transmitting elements and is specially time synchronization information transmitting element 606.
The OLT of present embodiment can also be further: be connected with transmitting element, be used to store transmitting optical power information that transmitting element sends and with the memory cell 608 of the corresponding time synchronization information of described luminous power.This memory cell is used to write down the history information of the above-mentioned luminous power information of storage etc., so that regular maintenance and monitoring.
By implementing the utility model embodiment, following beneficial effect is arranged:
(1) can improve the efficient that ONT installs, shorten the set-up time of ONT greatly;
(2) make the installation of ONT become friendly and easy, ONT just can install in domestic consumer oneself, reduces the lower deployment cost of operator;
(3) installing and using in the process of ONT, the failure judgement reason is learned light path problem or other problems such as (as configurations) easily;
(4) light path problem or other problems can be learned by domestic consumer, so that oneself solve a little problems, reduce operator's maintenance cost, and such as finding that pilot light decay indication is big, optical fiber overbending that may be own then can own trial solution;
(5) before authentication is passed through after ONT installs, just can solve the problem of light path in advance according to the information of ONT demonstration.
Above disclosed only is the utility model preferred embodiment, can not limit the interest field of the utility model certainly with this, and therefore the equivalent variations of being done according to the utility model claim still belongs to the scope that the utility model is contained.

Claims (10)

1, a kind of optical network terminal ONT is characterized in that, comprising:
Be used to measure power measurement unit from the optical signal power of optical line terminal OLT;
Be used to receive receiving element from the transmitting optical power information of optical line terminal OLT;
Be connected with receiving element with described power measurement unit respectively, be used for the transmitting optical power information that optical signal power and described receiving element according to the measured optical line terminal OLT of described power measurement unit receive, determine the computing unit of the optical power loss of light path;
Be connected with described computing unit, be used to indicate the indicating member of luminous power information, described luminous power information comprises: the optical power loss information of light path and/or the luminous power information of ONT.
2, ONT as claimed in claim 1, it is characterized in that, described indicating member comprises display circuit and information display panel, described display circuit is connected with information display panel, wherein, information display panel is used for the display light power information, and described luminous power information comprises: the optical power loss information of light path and/. or the luminous power information of ONT.
3, ONT as claimed in claim 2 is characterized in that, the type of described information display panel comprises: LED or LCDs LCD.
4, ONT as claimed in claim 1 is characterized in that, described indicating member comprises audio unit, is used for described luminous power information is exported with audio frequency, and described luminous power information comprises: the optical power loss information of light path and/or the luminous power information of ONT.
5, ONT as claimed in claim 1 is characterized in that, further comprises: be connected with described power measurement unit, be used for the time record cell of the corresponding temporal information of the measured light signal of recording power measuring unit.
6, ONT as claimed in claim 1 is characterized in that, further comprises: the time receiving element that is used to receive the corresponding time synchronization information of transmitting optical power that optical line terminal OLT sends, that receive with described receiving element.
7, ONT as claimed in claim 1 is characterized in that, further comprises: be connected with described computing unit, be used for the memory cell of storage computation unit result of calculation.
8, a kind of optical line terminal OLT is characterized in that, comprising:
Be used to obtain transmitting optical power information and with the acquiring unit of the corresponding time synchronization information of described transmitting optical power;
The transmitting element that is connected with described acquiring unit, be used for transmitting optical power information that acquiring unit is got access to and send to Optical Network Terminal ONT, so that ONT determines the optical power loss of light path according to described transmitting optical power information and time synchronization information with the corresponding time synchronization information of described transmitting optical power.
9, OLT as claimed in claim 8 is characterized in that, described transmitting element comprises: first transmitting element and second transmitting element, and first transmitting element is connected with second transmitting element, wherein,
First transmitting element is used for transmitting optical power information is sent to Optical Network Terminal ONT;
Second transmitting element is used for and will sends to Optical Network Terminal ONT with the corresponding time synchronization information of described transmitting optical power.
10, OLT as claimed in claim 8 is characterized in that, further comprises: be connected with described transmitting element, be used to store transmitting optical power information that transmitting element sends and with the memory cell of the corresponding time synchronization information of described transmitting optical power.
CN 200720170499 2007-11-07 2007-11-07 An optical network terminal and optical line terminal Expired - Fee Related CN201118594Y (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN 200720170499 CN201118594Y (en) 2007-11-07 2007-11-07 An optical network terminal and optical line terminal
PCT/CN2008/072935 WO2009065341A1 (en) 2007-11-07 2008-11-04 An optical network terminal and optical line terminal

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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009065341A1 (en) * 2007-11-07 2009-05-28 Huawei Technologies Co., Ltd. An optical network terminal and optical line terminal
CN102026052A (en) * 2011-01-04 2011-04-20 中兴通讯股份有限公司 Fault diagnosis method and system
WO2011116560A1 (en) * 2010-03-23 2011-09-29 中兴通讯股份有限公司 Method and equipment for measuring reception optical power of optical network unit
CN103098393A (en) * 2010-09-10 2013-05-08 株式会社藤仓 Data transmittance device, data transmittance method, and data transmittance device control program
CN114944868A (en) * 2022-03-22 2022-08-26 江苏科大亨芯半导体技术有限公司 Top adjusting system of passive optical network

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US5825516A (en) * 1996-07-25 1998-10-20 Hewlett-Packard Company Optical power meter for detecting loss factors in fiber optic communications
JP3851610B2 (en) * 2000-06-30 2006-11-29 富士通株式会社 Transmission path loss test method, slave station, master station and communication system using the method
JP3938135B2 (en) * 2003-10-28 2007-06-27 日本電気株式会社 Transceiver and transceiver system
WO2006003164A1 (en) * 2004-06-30 2006-01-12 Siemens Aktiengesellschaft Method and apparatus for obtaining an optical power power level in a pon
WO2006096668A2 (en) * 2005-03-07 2006-09-14 Nettest North America, Inc. Passive optical network loss test apparatus and method of use thereof
CN201118594Y (en) * 2007-11-07 2008-09-17 华为技术有限公司 An optical network terminal and optical line terminal

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009065341A1 (en) * 2007-11-07 2009-05-28 Huawei Technologies Co., Ltd. An optical network terminal and optical line terminal
WO2011116560A1 (en) * 2010-03-23 2011-09-29 中兴通讯股份有限公司 Method and equipment for measuring reception optical power of optical network unit
CN103098393A (en) * 2010-09-10 2013-05-08 株式会社藤仓 Data transmittance device, data transmittance method, and data transmittance device control program
CN103098393B (en) * 2010-09-10 2014-03-12 株式会社藤仓 Data transmittance device and data transmittance method
CN102026052A (en) * 2011-01-04 2011-04-20 中兴通讯股份有限公司 Fault diagnosis method and system
CN114944868A (en) * 2022-03-22 2022-08-26 江苏科大亨芯半导体技术有限公司 Top adjusting system of passive optical network

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080917

Termination date: 20091207