CN106027144B - Method and system for positioning and identifying reflection phenomenon in optical fiber communication - Google Patents
Method and system for positioning and identifying reflection phenomenon in optical fiber communication Download PDFInfo
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- CN106027144B CN106027144B CN201610532583.1A CN201610532583A CN106027144B CN 106027144 B CN106027144 B CN 106027144B CN 201610532583 A CN201610532583 A CN 201610532583A CN 106027144 B CN106027144 B CN 106027144B
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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
- H04B10/079—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
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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
- H04B10/079—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
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention discloses a method and a system for positioning and identifying reflection phenomena in optical fiber communication, wherein the method comprises an O L T, an optical splitter and a plurality of terminals, wherein the optical splitter is respectively connected with the plurality of terminals through optical fiber pipelines, the optical splitter is connected with an O L T through the optical fiber pipelines, the O L T is used for implementing the steps of S1, receiving a message with terminal ID information, recording keyword information of the message, and S2, when receiving the next message with the terminal ID information, checking whether the keyword information of the message is consistent with the keyword information in the step S1, and judging whether the terminal or the optical fiber pipeline corresponding to the terminal ID has the reflection phenomena or not according to the keyword information, the invention realizes the identification and positioning of the message with the reflection phenomena through the identification of the key information of the message in the optical fiber communication, and overcomes the problem that the terminal or the pipeline with the reflection phenomena can not be accurately positioned in the prior art.
Description
Technical field
The present invention relates to a kind of fixation and recognition sides of reflex in optical fiber transmission network field more particularly to fiber optic communication
Method and system.
Background technique
OLT:optical line terminal, optical line terminal, for connecting the terminal device of fiber optic backbone.
ONU:Optical Network Unit, optical network unit.
LLID:Logical Link Identifier, logical links label.
GPON:Gigabit-Capable PON technology is the latest generation broadband passive based on ITU-TG.984.x standard
Light Integrated access standard.
EPON:Ethernet Passive Optical Network, Ethernet passive optical network is based on Ethernet
PON technology.
General optical fiber networking diagram is as shown in Figure 1.
The message that ONU is sent under normal circumstances passes through distal optical fiber -> optical splitter -> trunk optical fiber, then reaches OLT, presses
It is exactly -18.6dB according to the above-mentioned calculating OLT optical signal received, meets OLT received optical power requirement.
Under abnormal conditions, if optical splitter distal optical fiber plane occur mirror-reflection phenomenon (formed the plane of reflection, than if any
Water droplet is dirty etc.), then signal can occur reflecting back to ONU at once, ONU has received a optical signal oneself sent,
By the optical signal of first reflection, if the receiving plane of ONU also has mirror-reflection phenomenon (plane of reflection), ONU meeting
By secondary reflection, then issue OLT portion message.As shown in Fig. 2, the influence that abnormal conditions generate includes:
1, OLT will receive two parts of identical content messages from the same ONU2, and a copy of it is illegal message.In this way
Message may result in the message error that OLT receives other ONU, or even the management message slot of other ONU is treaded down, is caused
Other ONU cannot stablize online.
2, the ONU2 for occurring reflecting will receive a message oneself sent, if ONU processing is proper directly to lose
It abandons, if be not handled by, will lead to user and receive two parts of messages, lead to error in data, the experience of client is that online is slow, language
Sound business cannot be waited normally.
For above-mentioned influence, the prior art can only identify error message in optical fiber, and cannot be accurately positioned is which
Caused by terminal, and the error statistics occurred cannot be distinguished with other error codes, i.e., can only navigate in a thick pipe and deposit
In problem, but which thin pipe there is a problem to be currently no very good scheme in thick pipe, cannot be pin-pointed to out
The thin pipe of existing problem.
Summary of the invention
In order to solve the above-mentioned technical problem, be conducive to be accurately positioned in fiber optic communication the object of the present invention is to provide one kind
The recognition methods and system of existing reflex route.
The technical scheme adopted by the invention is that:
The positioning identifying method of reflex in a kind of fiber optic communication, comprising steps of
S1 receives the message for having terminal ID info, records the keyword message of the message；
S2, when receiving next message with the terminal ID info, examine message keyword message whether with
Keyword message in step S1 is consistent, and it is existing to judge whether the corresponding terminal of the Termination ID or FDDI FDM Fiber Duct reflection occur accordingly
As.
Preferably, the terminal is ONU terminal.
Preferably, the Termination ID is LLID information.
Preferably, the keyword message is the timestamp information in EPON communication or the SUPERCOUNT in GPON communication
Information.
Preferably, the keyword message is the timestamp information in EPON communication,
The step S1 specifically:
The n-th message for having LLID information is received, the timestamp information of n-th message is parsed and record；
The step S2 specifically includes sub-step:
S21 receives the N+1 message with the LLID information, parses and check the timestamp letter of the N+1 message
Whether breath is consistent with the timestamp information of n-th message, if so, then entering step S22, otherwise enters step S23；
S22 determines that reflex, report and alarm information occur in the corresponding ONU of the LLID or FDDI FDM Fiber Duct；
S23 is continued to and is handled next message.
The positioning identification system of reflex in a kind of fiber optic communication, including OLT, optical splitter and multiple terminals, described point
Light device passes through FDDI FDM Fiber Duct respectively and connect with multiple terminals, and the optical splitter is connect with OLT by FDDI FDM Fiber Duct, and the OLT is used
In implementation steps:
S1 receives the message for having terminal ID info, records the keyword message of the message；
S2, when receiving next message with the terminal ID info, examine message keyword message whether with
Keyword message in step S1 is consistent, and it is existing to judge whether the corresponding terminal of the Termination ID or FDDI FDM Fiber Duct reflection occur accordingly
As.
Preferably, the terminal is ONU terminal.
Preferably, the keyword message is the timestamp information in EPON communication or the SUPERCOUNT in GPON communication
Information.
Preferably, the OLT includes sequentially connected optic communication chip, parallel converters and optical fiber interface, and the light is logical
Letter chip is for completing the step S1 and S2.
It preferably, further include BASE network, the OLT and BASE are connected to the network.
The beneficial effects of the present invention are:
The present invention realizes the knowledge of the message occurred to reflex by the identification to message key message in fiber optic communication
It not and positions, overcomes the problem of cannot being pin-pointed to the terminal or pipeline for reflex occur in the prior art.On the one hand,
After there are reflection problems, the present invention can remind client's optical path there are problem at the first time, after avoiding end user from ensureing again into
Row processing, saves the time；On the other hand, the present invention avoid in turn plug fiber orientation there is the optical fiber reflected, the row of saving
The working strength looked into and safeguarded.
It the composite can be widely applied to various optical fiber telecommunications systems.
Detailed description of the invention
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing:
Fig. 1 is general optical fiber networking diagram；
Fig. 2 is the secondary reflection schematic diagram between ONU and optical splitter；
Fig. 3 is a kind of structural schematic diagram of embodiment of present system；
Fig. 4 is a kind of flow chart of embodiment of the method for the present invention.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
As shown in figure 3, in a kind of fiber optic communication reflex positioning identification system, including OLT, optical splitter and multiple ends
End, the optical splitter pass through FDDI FDM Fiber Duct respectively and connect with multiple terminals, and the optical splitter is connect with OLT by FDDI FDM Fiber Duct,
The OLT is used for implementation steps:
S1 receives the message for having terminal ID info, records the keyword message of the message；
S2, when receiving next message with the terminal ID info, examine message keyword message whether with
Keyword message in step S1 is consistent, and it is existing to judge whether the corresponding terminal of the Termination ID or FDDI FDM Fiber Duct reflection occur accordingly
As.
In the embodiment, the terminal is ONU terminal.The keyword message be EPON communication in timestamp information or
SUPERCOUNT information in GPON communication.The OLT includes that sequentially connected optic communication chip, parallel converters and optical fiber connect
Mouthful, the optic communication chip is for completing the step S1 and S2.It further include BASE network, the OLT and BASE are connected to the network.
Current each optic communication chip has several performance statistics, and the present invention is changed in these statistical basis
Into the scheme for making these improved statistics can satisfy us requires.It is illustrated by taking MAC chip as an example, as shown in Figure 3:
The MAC chip of OLT has a logic id(LLID for each ONU) correspond to therewith, MAC chip can for LLID into
Row statistics.
Specifically, in a kind of fiber optic communication reflex positioning identifying method, comprising steps of
S1 receives the message for having terminal ID info, records the keyword message of the message；
S2, when receiving next message with the terminal ID info, examine message keyword message whether with
Keyword message in step S1 is consistent, and it is existing to judge whether the corresponding terminal of the Termination ID or FDDI FDM Fiber Duct reflection occur accordingly
As.
Preferably, the terminal is ONU terminal.
Preferably, the Termination ID is LLID information.
Preferably, the keyword message is the timestamp information in EPON communication or the SUPERCOUNT in GPON communication
Information.
Specifically, as shown in figure 4, by keyword message be EPON communication in timestamp information for,
The step S1 specifically:
The n-th message for having LLID information is received, the timestamp information of n-th message is parsed and record；
The step S2 specifically includes sub-step:
S21 receives the N+1 message with the LLID information, parses and check the timestamp letter of the N+1 message
Whether breath is consistent with the timestamp information of n-th message, if so, then entering step S22, otherwise enters step S23；
S22 determines that reflex occur in the corresponding ONU of the LLID or FDDI FDM Fiber Duct, reports secondary reflection warning information；
S23 continues to and handles next message, so recycles.
The present invention is to be optimized according to MAC chip to each LLID statistics, is increased in counting messages according to message
Keyword is counted, for example the timestamp information (TimeStamp) in EPON communication, the SUPERCOUNT etc. of GPON communication
Keyword message, by judging whether these keyword messages repeat to judge that it is existing that reflection occurs in which specific ONU
As.Obviously, the quick locating scheme of reflex proposed by the present invention, this scheme be not limited to EPON, GPON, 10GGPON,
The optical communication modes such as 10GEPON, WDM PON further include other optic path modes.
In conclusion after MAC chip receives data, the timestamp of parsing outgoing packet first is believed so that EPON is communicated as an example
Breath (can be realized by hardware circuit) is simultaneously recorded, and is parsed when receiving next message to message, is checked message
Whether timestamp consistent with the preceding timestamp once recorded, if it is consistent so if produce secondary reflection, otherwise record is current
Timestamp, continue with next message.
The present invention realizes the knowledge of the message occurred to reflex by the identification to message key message in fiber optic communication
It not and positions, overcomes the problem of cannot being pin-pointed to the terminal or pipeline for reflex occur in the prior art.On the one hand,
After there are reflection problems, the present invention can remind client's optical path there are problem at the first time, after avoiding end user from ensureing again into
Row processing, saves the time；On the other hand, the present invention avoid in turn plug fiber orientation there is the optical fiber reflected, the row of saving
The working strength looked into and safeguarded.
It the composite can be widely applied to various optical fiber telecommunications systems.
It is to be illustrated to preferable implementation of the invention, but the invention is not limited to the implementation above
Example, those skilled in the art can also make various equivalent variations on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent deformations or replacement are all included in the scope defined by the claims of the present application.
Claims (7)
1. the positioning identifying method of reflex in a kind of fiber optic communication, which is characterized in that comprising steps of
S1 receives the message for having terminal ID info, records the keyword message of the message；
S2, when receiving next message with the terminal ID info, examine message keyword message whether with step
Keyword message in S1 is consistent, and judges whether the corresponding terminal of the Termination ID or FDDI FDM Fiber Duct reflex occur accordingly；
The terminal is ONU terminal；
The Termination ID is LLID information.
2. the positioning identifying method of reflex in a kind of fiber optic communication according to claim 1, which is characterized in that described
Keyword message is the timestamp information in EPON communication or the SUPERCOUNT information in GPON communication.
3. the positioning identifying method of reflex in a kind of fiber optic communication according to claim 2, which is characterized in that described
Keyword message is the timestamp information in EPON communication,
The step S1 specifically:
The n-th message for having LLID information is received, the timestamp information of n-th message is parsed and record；
The step S2 specifically includes sub-step:
S21 receives the N+1 message with the LLID information, parses and check that the timestamp information of the N+1 message is
It is no consistent with the timestamp information of n-th message, if so, then entering step S22, otherwise enter step S23；
S22 determines that reflex, report and alarm information occur in the corresponding ONU of the LLID or FDDI FDM Fiber Duct；
S23 is continued to and is handled next message.
4. the positioning identification system of reflex in a kind of fiber optic communication, which is characterized in that including OLT, optical splitter and multiple ends
End, the optical splitter pass through FDDI FDM Fiber Duct respectively and connect with multiple terminals, and the optical splitter is connect with OLT by FDDI FDM Fiber Duct,
The OLT is used for implementation steps:
S1 receives the message for having terminal ID info, records the keyword message of the message；
S2, when receiving next message with the terminal ID info, examine message keyword message whether with step
Keyword message in S1 is consistent, and judges whether the corresponding terminal of the Termination ID or FDDI FDM Fiber Duct reflex occur accordingly；
The terminal is ONU terminal；The Termination ID is LLID information.
5. the positioning identification system of reflex in a kind of fiber optic communication according to claim 4, which is characterized in that described
Keyword message is the timestamp information in EPON communication or the SUPERCOUNT information in GPON communication.
6. the positioning identification system of reflex in a kind of fiber optic communication according to claim 4, which is characterized in that described
OLT includes sequentially connected optic communication chip, parallel converters and optical fiber interface, and the optic communication chip is for completing the step
Rapid S1 and S2.
7. according to the positioning identification system of reflex in a kind of described in any item fiber optic communications of claim 4 to 6, feature
It is, further includes BASE network, the OLT and BASE is connected to the network.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610532583.1A CN106027144B (en) | 2016-07-07 | 2016-07-07 | Method and system for positioning and identifying reflection phenomenon in optical fiber communication |
| PCT/CN2016/093935 WO2018006460A1 (en) | 2016-07-07 | 2016-08-08 | Positioning and recognition method and system for reflection phenomenon in optical fibre communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610532583.1A CN106027144B (en) | 2016-07-07 | 2016-07-07 | Method and system for positioning and identifying reflection phenomenon in optical fiber communication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106027144A CN106027144A (en) | 2016-10-12 |
| CN106027144B true CN106027144B (en) | 2018-12-07 |
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| CN201610532583.1A Active CN106027144B (en) | 2016-07-07 | 2016-07-07 | Method and system for positioning and identifying reflection phenomenon in optical fiber communication |
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Citations (2)
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| CN103686468A (en) * | 2012-09-21 | 2014-03-26 | 上海斐讯数据通信技术有限公司 | Client device and control method thereof, and passive optical network and operation method thereof |
| CN103746850A (en) * | 2014-01-13 | 2014-04-23 | 中国联合网络通信集团有限公司 | Method and device for positioning fault and PON (Passive Optical Network) system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101047442B (en) * | 2006-04-02 | 2012-05-30 | 华为技术有限公司 | Maintenance method of passive optical network and its system |
| CN101764646B (en) * | 2008-12-24 | 2013-01-02 | 中国科学院半导体研究所 | Wavelength-encoding optical time domain reflection test device and measurement method thereof |
| US8873960B2 (en) * | 2008-12-30 | 2014-10-28 | Broadcom Corporation | Techniques for detecting optical faults in passive optical networks |
| US8737834B2 (en) * | 2009-06-29 | 2014-05-27 | Broadcom Corporation | Method and system for optical performance monitoring in ethernet passive optical networks |
| US8265484B2 (en) * | 2009-12-15 | 2012-09-11 | Broadcom Corporation | RF signal transport over passive optical networks |
| CN102142893A (en) * | 2011-01-24 | 2011-08-03 | 华为技术有限公司 | Reflectance anomaly detection method, system and device for optical distribution network |
| WO2012149773A1 (en) * | 2011-09-27 | 2012-11-08 | 华为技术有限公司 | Method, system and device for optical fibre link detection in passive optical network |
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- 2016-07-07 CN CN201610532583.1A patent/CN106027144B/en active Active
- 2016-08-08 WO PCT/CN2016/093935 patent/WO2018006460A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103686468A (en) * | 2012-09-21 | 2014-03-26 | 上海斐讯数据通信技术有限公司 | Client device and control method thereof, and passive optical network and operation method thereof |
| CN103746850A (en) * | 2014-01-13 | 2014-04-23 | 中国联合网络通信集团有限公司 | Method and device for positioning fault and PON (Passive Optical Network) system |
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| WO2018006460A1 (en) | 2018-01-11 |
| CN106027144A (en) | 2016-10-12 |
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