CN103312409B - The method and device that a kind of optical module detecting optical node is abnormal luminous - Google Patents
The method and device that a kind of optical module detecting optical node is abnormal luminous Download PDFInfo
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- CN103312409B CN103312409B CN201210056462.6A CN201210056462A CN103312409B CN 103312409 B CN103312409 B CN 103312409B CN 201210056462 A CN201210056462 A CN 201210056462A CN 103312409 B CN103312409 B CN 103312409B
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
- H04Q2011/0081—Fault tolerance; Redundancy; Recovery; Reconfigurability
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
- H04Q2011/0083—Testing; Monitoring
Abstract
The invention discloses the method that the optical module of a kind of detection optical node (ONU) is abnormal luminous, including: if according to this upward signal assignment information, detect that the duration of this upward signal is abnormal or detects that the transmission cycle of this upward signal is abnormal, then close the optical module sending function of ONU；Or, if according to preset spacing parameter, detect that current lasers light emission instruction signal interval that is abnormal or that detect between upward signal is abnormal, then close ONU optical module sending function.The present invention further simultaneously discloses the device that a kind of optical module detecting ONU is abnormal luminous, the optical module that the employing present invention can detect ONU comprehensively, in time is abnormal luminous, thus control the abnormal luminous impact brought to other ONU of management under optical fiber cable termination equipment (OLT) same interface in time, and then ensure the reliability of EPON (PON).
Description
Technical field
The present invention relates to EPON (PON, the PassiveOpticalNetwork) technology in optical network communication, particularly relate to the method and device that the optical module of a kind of detection optical node (ONU, OpticalNetworkUnit) is abnormal luminous.
Background technology
Along with the development of optical communication technique, the application of PON is more and more extensive.The network topology structure of PON is point-to-multipoint physical topological structure, PON is by optical fiber cable termination equipment (OLT, OpticalLineTerminal) form with ONU, owing to the uplink communication of PON uses time division multiple acess (TDMA, TimeDivisionMultipleAccess) mode of bandwidth is shared, so when the optical module in one or more ONU of management under the same interface of OLT is not controlled occur abnormal luminous by OLT, just influencing whether the regular traffic of other ONU that this OLT manages.
At present, abnormal luminous in order to solve the optical module of above-mentioned ONU problem, it has been suggested that following two solution:
One is that number of patent application is a kind of fault active detecting partition method and optical line unit disclosed in CN200910110771.5: detect the actual luminance of optical transmitting set of the optical module of ONU, the time window of actual for optical transmitting set luminance and optical line terminal authorized appropriation is compared, when detect optical transmitting set at the end of the time window of this optical line terminal authorized appropriation still in luminance time, determine whether whether its fluorescent lifetime outside time window exceedes time span set in advance, if it exceeds, then judge that optical module is abnormal, closes optical module.But, this patent can only this authorized appropriation window start to terminate after preset time span interior focusing module status be monitored, it is impossible to after this authorized appropriation window is terminated preset time span terminate after, to next time authorized appropriation window start before optical module state change cannot be carried out monitor.
Another be number of patent application be a kind of EPON protection system and method disclosed in CN200710087367.1; including: luminous detection unit the transmitting luminous power of the optical sender of terminal unit and predetermined threshold compared and obtain testing result; and protect control unit respectively when described terminal unit starts to send upstream data and when terminating to send upstream data, open and send beginning intervalometer and send stop timing device；If send beginning timer expiry or send stop timing device time-out and protect the testing result preserved in control unit for transmitting luminous power not less than described predetermined threshold; protection control unit judges that terminal unit breaks down, the optical sender of equipment of closing a terminal.But, it is the fixed value arranged according to experience that sending in the program starts the duration of intervalometer or transmission stop timing device, and the transmission pulse duration distributed for ONU in PON may change according to network condition, start intervalometer so the program cannot adjust according to practical situation to judge to send in time or send the duration of stop timing device, and then may cause judging fault by accident.
Visible, such scheme, although the abnormal luminous problem of optical module of ONU can be solved to a certain extent, but, or the time span preset after this authorized appropriation window can not being terminated terminate after, start to monitor the abnormal luminous problem of optical module before to next authorized appropriation window；Can not adjust in time according to practical situation to judge to send and start timer expiry or send the foundation of stop timing device time-out, and then may cause judging fault by accident.Obviously, current solution abnormal luminous for existing ONU, it is impossible to the optical module meeting comprehensively, detecting in time ONU is abnormal luminous, thus cannot control the impact that abnormal luminous other ONU managed to identical OLT bring in time, and then affects the reliability of PON.
Summary of the invention
In view of this, it is an object of the invention to provide the method and device that a kind of optical module detecting ONU is abnormal luminous, the optical module that comprehensive, timely can detect ONU is abnormal luminous, thus controls the impact that abnormal luminous other ONU managed to identical OLT bring in time, and then ensures the reliability of PON.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
The invention provides a kind of method that optical module detecting ONU is abnormal luminous, the method includes: if according to this upward signal assignment information, judge that the duration of this upward signal is abnormal or judges that the transmission cycle of this upward signal is abnormal, then close the optical module sending function of ONU；
Or, if according to preset spacing parameter, it is determined that current light emission instruction signal is abnormal or judges that the interval between upward signal is abnormal, then close ONU optical module sending function.
In such scheme, described according to this upward signal assignment information before, the method also includes: the interval thresholding between delay threshold and the upward signal of the light emission instruction signal that ONU saves presets is as spacing parameter；After ONU opens, receive and preserve signal sending time that OLT sends, signal sends duration and Dynamic Bandwidth Allocation (DBA, DynamicBandwidthAllocation) dispatching cycle as this upward signal assignment information.
In such scheme, the duration of described this upward signal of judgement is abnormal, including: whether detection pulse width timer sends duration less than or equal to signal in real time；If pulse width timer sends duration less than or equal to signal and this upward signal stops sending, then the duration of this upward signal is normal；If pulse width timer sends duration more than signal and this upward signal does not stop, then the duration of this upward signal is abnormal.
In such scheme, before transmission cycle of described this upward signal of judgement is abnormal, the method also includes: calculate the transmission cycle of upward signal according to the twice upward signal assignment information received.
In such scheme, the transmission cycle of described this upward signal of judgement is abnormal, including: detect whether in real time again to send upward signal, when detect again send upward signal time, record current period timer duration；The duration judging current period timer is the most identical with the cycle of the upward signal calculated, if identical, then the transmission cycle of upward signal is normal, and otherwise, the transmission cycle of upward signal is abnormal.
In such scheme, the current light emission instruction signal of described judgement is abnormal, including: when stopping sends this upward signal, open time delay timer, the delay threshold that whether detection light emission instruction signal stops and whether detection delay timer is less than or equal to light emission instruction signal in real time in real time；If delay timer stops less than or equal to delay threshold and the light emission instruction signal of light emission instruction signal, then light emission instruction signal is normal；If delay timer does not stop more than delay threshold and the light emission instruction signal of light emission instruction signal, then light emission instruction signal is abnormal.
In such scheme, interval between described judgement upward signal is abnormal, including: open interval timer when light emission instruction signal stops, detecting whether in real time to start whether again to send upward signal real-time assay intervals timer less than or equal to the interval thresholding between upward signal；If interval timer is less than or equal to the interval thresholding between upward signal and starts again to send upward signal, then the interval between upward signal is normal；If interval timer is more than the interval thresholding between upward signal and the most again sends upward signal, then the interval between upward signal is abnormal.
Present invention also offers the device that a kind of optical module detecting ONU is abnormal luminous, this device includes: abnormal luminous detection module and optical module；Wherein,
Abnormal luminous detection module, if for according to this upward signal assignment information, it is determined that the duration of this upward signal is abnormal or judges that the transmission cycle of this upward signal is abnormal, then closes the optical module sending function of place ONU；Or, if according to preset spacing parameter, it is determined that current light emission instruction signal is abnormal or judges that the interval between upward signal is abnormal, closes the optical module sending function of place ONU；
Optical module, for receiving the sending function controlling to close self of abnormal luminous detection module.
In such scheme, described device also includes: control module, for resolving the downstream signal that optical module is sent, using the signal sending time of the upward signal in downstream signal, signal sends duration and DBA is sent to abnormal luminous detection module as this upward signal assignment information dispatching cycle；
Accordingly, described abnormal luminous detection module, specifically for the spacing parameter saved presets, after place ONU opens, receive and preserve this upward signal assignment information that control module is sent；
Described optical module, the downstream signal being additionally operable to send OLT is sent to control module.
In such scheme, described abnormal luminous detection module, whether duration is sent less than or equal to signal specifically for detection pulse width timer in real time, if pulse width timer sends duration less than or equal to signal and receives the notice that this upward signal stops sending, then the duration of this upward signal is normal, if pulse width timer sends duration more than signal and do not receives the notice that this upward signal stops sending, then the duration of this upward signal is abnormal.
In such scheme, described abnormal luminous detection module, it is additionally operable to calculate the transmission cycle of upward signal according to the twice upward signal assignment information received.
In such scheme, described abnormal luminous detection module, again send the notice of upward signal specifically for detecting whether in real time to receive, when detect again send upward signal time, the duration of record current period timer；The duration judging current period timer is the most identical with the cycle of the upward signal calculated, if identical, then the transmission cycle of upward signal is normal, and otherwise, the transmission cycle of upward signal is abnormal.
In such scheme, described abnormal luminous detection module, specifically for when receiving the notice stopping sending this upward signal, open time delay timer, the delay threshold that whether detection light emission instruction signal stops and whether detection delay timer is less than or equal to preset light emission instruction signal in real time in real time；If delay timer stops less than or equal to delay threshold and the light emission instruction signal of light emission instruction signal, then light emission instruction signal is normal；If delay timer does not stop more than delay threshold and the light emission instruction signal of light emission instruction signal, then light emission instruction signal is abnormal.
In such scheme, described abnormal luminous detection module, specifically for opening interval timer when light emission instruction signal stops, detecting whether that whether the notice starting again to send upward signal real-time assay intervals timer are less than or equal to the interval thresholding between preset upward signal in real time；If interval timer is less than or equal to the interval thresholding between upward signal and starts again to send upward signal, then the interval between upward signal is normal；If interval timer is more than the interval thresholding between upward signal and the most again sends upward signal, then the interval between upward signal is abnormal.
The method and device that the optical module of detection ONU provided by the present invention is abnormal luminous, by the duration of this upward signal, the transmission cycle of upward signal, interval between current light emission instruction signal and upward signal are detected, thus before sending to upward signal next time after avoiding this upward signal to be sent completely, occur that a period of time cannot monitor the abnormal luminous problem of optical module；Additionally, detected the transmission cycle of the duration of this upward signal, this upward signal by the upward signal assignment information according to real-time reception, thus avoid can not adjusting the problem judging to send the foundation starting timer expiry or transmission stop timing device time-out in time according to practical situation；Thus the optical module that detects ONU comprehensively, timely is abnormal luminous, controls the impact that abnormal luminous other ONU managed to identical OLT bring in time, and then ensure the reliability of PON.
Accompanying drawing explanation
Fig. 1 is the method flow schematic diagram that the present invention detects that the optical module of ONU is abnormal luminous；
Fig. 2 is the composition structural representation that the present invention detects the abnormal luminous device of the optical module of ONU.
Detailed description of the invention
The basic thought of the present invention is: if according to this upward signal assignment information, it is determined that the duration of this upward signal is abnormal or judges that the transmission cycle of this upward signal is abnormal, then close the optical module sending function of ONU；Or, if abnormal according to preset spacing parameter, it is determined that current light emission instruction signal is abnormal or judges that the interval between upward signal is abnormal, then close ONU optical module sending function.
Wherein, described upward signal assignment information is the OLT Multi-point Control Protocol (MPCP according to prior art, Multi-PointControlProtocol) downstream signal that regulation sends to ONU, including: the signal sending time of upward signal, signal send duration and DBA dispatching cycle etc.；
Described spacing parameter includes: the interval thresholding between delay threshold and the upward signal of light emission instruction signal；Wherein, the delay threshold of described light emission instruction signal is the time value preset according to practical situation, and the performance of the voltage comparator that generation light emission instruction signal actual to ONU is used is relevant, such as, if using high speed voltage comparator of the prior art, then can be with preset delay threshold as 40ns；The generation of described light emission instruction signal and transmission are the prior art of the optical module of ONU, do not repeat；
Pocket door between described upward signal is limited to the time value arranged according to practical situation, can carry out preset according to the pulse period in PON, such as, can be 100us.
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further described in more detail.
The method that a kind of optical module detecting ONU that the present invention provides is abnormal luminous, as it is shown in figure 1, comprise the following steps:
The spacing parameter that step 101:ONU saves presets；After ONU opens, receive and preserve this upward signal assignment information that OLT sends.
When step 102:ONU starts to send this upward signal, open pulse width timer (T1) and cycle timer (T2).
Step 103: send duration according to the signal in this upward signal assignment information, it is judged that the duration of this upward signal is the most normal, if normally, then performs step 104；If abnormal, then perform step 108.
Here, described judgement includes: whether detection T1 sends duration less than or equal to signal in real time；If T1 sends duration less than or equal to signal and this upward signal stops sending, then the duration of this upward signal is normal；If T1 sends duration more than signal and this upward signal does not stop, then the duration of this upward signal is abnormal.
Step 104: according to the delay threshold of the light emission instruction signal in spacing parameter, it is judged that light emission instruction signal is the most normal, if normally, then performs step 105；Otherwise, step 108 is performed.
Here, described judgement includes: when stopping sends this upward signal, open time delay timer (T3), the delay threshold that whether detection light emission instruction signal stops and whether detection T3 is less than or equal to light emission instruction signal in real time in real time；If T3 stops less than or equal to delay threshold and the light emission instruction signal of light emission instruction signal, then light emission instruction signal is normal；If T3 does not stop more than delay threshold and the light emission instruction signal of light emission instruction signal, then light emission instruction signal is abnormal.
Step 105: judge whether to be received again by the upward signal assignment information that OLT sends, if confiscating, then performs step 106；If receiving, then perform step 107.
Step 106: according to the interval thresholding between the upward signal in spacing parameter, it is judged that the interval between upward signal is the most normal, if normally, then returns step 105；If abnormal, then perform step 108.
Here, described judgement includes: open interval timer (T4) when detecting when light emission instruction signal stops, and detects whether in real time start again at transmission upward signal and whether detect T4 in real time less than or equal to the interval thresholding between upward signal；If T4 is less than or equal to the interval thresholding between upward signal and starts again at transmission upward signal, then the interval between upward signal is normal；If T4 is more than the interval thresholding between upward signal and the most again sends upward signal, then the interval between upward signal is abnormal.
Step 107: utilize the transmission cycle of calculated upward signal, it is judged that the transmission cycle of this upward signal is the most normal, if normally, then the testing result of the optical module of ONU is not for having unusual condition, terminates handling process；Otherwise, step 108 is performed.
Here, the transmission cycle of described calculated upward signal is that twice upward signal assignment information according to OLT distribution calculates, computational methods can be the difference of twice signal sending time, it is also possible to the DBA for distributing according to OLT adds the difference of the signal sending time that will send upward signal and signal sending time last time dispatching cycle；Concrete use which kind of computational methods can be according to practical situation, set by management personnel；
Described judging whether is normally: whether detection ONU starts again at and send upward signal in real time, when detecting that ONU begins to send out upward signal, records the duration of current T2；Judging that the duration of the T2 of current record is the most identical with the cycle of the upward signal calculated, if identical, then the transmission cycle of upward signal is normal, and otherwise, the transmission cycle of upward signal is abnormal.
Step 108: close ONU optical module sending function.
Here, described closedown can be realized by the power supply of light emitting diode in the optical module circuit of closedown ONU, can also realize by closing the transmitting terminal power supply of optical module, and specific implementation is prior art, does not repeats.
Additionally, after step 108, can also be according to the Rule of judgment entering step 108, carry out subsequent operation, such as: when the condition entering step 108 is that current light emission instruction signal is abnormal or interval between upward signal is abnormal, then the optical module of ONU self goes wrong, and can reset after ONU being set to silent status according to prior art again, start to receive, according still further to prior art, the information that OLT issues, perform step 101.
When the duration that condition is this upward signal abnormal or this upward signal the transmission cycle entering step 108 is abnormal, test pattern can be entered, execution following steps:
Step a:ONU opens T1 and T2 when starting to send up test signal.
Here, described up test signal is that ONU sends length according to preset test signal sending time, test signal and the test signal transmission cycle sends upward signal.
Step b: judge that the duration of current up test signal is the most normal, if normally, then performs step c；If abnormal, then perform step d.
Here, described judgement includes: ONU sends up test signal, and whether detection T1 sends duration less than or equal to signal in real time；If T1 sends duration less than or equal to signal and this upward signal stops sending, the duration of the most up test signal is normal；If T1 sends duration more than signal and this upward signal does not stop, the duration of the most up test signal is abnormal.
Step c: judge that the transmission cycle of up test signal is the most normal, if normally, it is determined that controlled exception does not occur in the optical module of ONU, terminates handling process；Otherwise, step d is performed.
Here, it is judged as described in: whether detection ONU starts again at and send up test signal in real time, when detecting that ONU begins to send out up test signal, records the duration of current T2；It is the most identical that the duration of current T2 and preset test signal send the cycle, if identical, the transmission cycle of the most up test signal is normal；Otherwise, the transmission cycle of up test signal is abnormal.
Step d: determine that the optical module of ONU sends function controlled and occurs abnormal, close the optical module sending function of ONU.
Further, after above-mentioned steps d completes, according to prior art, optical module can be carried out subsequent detection and maintenance work, not repeat；After completing detection and maintenance, start to perform step 101.
The present invention proposes a kind of abnormal luminous device of optical module detecting ONU, as in figure 2 it is shown, include: abnormal luminous detection module 21 and optical module 22；Wherein,
Abnormal luminous detection module 21, if for according to this upward signal assignment information, it is determined that the duration of this upward signal is abnormal or judges that the transmission cycle of this upward signal is abnormal, then closes optical module 22 sending function of place ONU；Or, if according to preset spacing parameter, it is determined that current light emission instruction signal is abnormal or judges that the interval between upward signal is abnormal, closes optical module 22 sending function of place ONU；
Optical module 22, for receiving the sending function controlling to close self of abnormal luminous detection module 21.
Described optical module 22 has all functions of optical module of the ONU of regulation in prior art, does not repeats.
Described device also includes: control module 23, for resolving the downstream signal that optical module 22 is sent, using the signal sending time of the upward signal in downstream signal, signal sends duration and DBA is sent to abnormal luminous detection module 21 as this upward signal assignment information dispatching cycle；Accordingly, described abnormal luminous detection module 21, specifically for the spacing parameter saved presets, after place ONU opens, receive and preserve this upward signal assignment information that control module 23 is sent；Described optical module 22, the downstream signal being additionally operable to be sent by OLT is sent to control module 23.
Described control module 23, starts to send this upward signal specifically for notice optical module 22 and abnormal luminous detection module 21；Accordingly, described optical module 22, specifically for receiving the control of control module 23；Described abnormal luminous detection module 21, after receiving the notice starting to send this upward signal that control module 23 is sent, opens T2 and T1.
Described abnormal luminous detection module 21, specifically for sending duration according to the signal in this upward signal assignment information, judge that the duration of this upward signal is the most normal, if it is normal, then start to judge that light emission instruction signal is the most normal, if abnormal, then close optical module 22 sending function of place ONU and notify that the duration of this upward signal of control module 23 is abnormal；Accordingly, described control module 23, the abnormal notice of duration being additionally operable to receive this upward signal that abnormal luminous detection module 21 is sent preserves as testing result.
Described abnormal luminous detection module 21, whether duration is sent less than or equal to signal specifically for detection T1 in real time, if T1 sends duration less than or equal to signal and receives the notice stopping sending this upward signal that control module 23 is sent, then the duration of this upward signal is normal, if T1 sends duration and for receiving the notice stopping sending this upward signal more than signal, then the duration of this upward signal is abnormal；Accordingly, described control module 23, it is additionally operable to notify that optical module 22 and abnormal luminous detection module 21 stop sending this upward signal.
Described abnormal luminous detection module 21, specifically for the delay threshold according to the light emission instruction signal in spacing parameter, judge that the light emission instruction signal of optical module 22 is the most normal, if it is normal, then judge whether to be received again by the upward signal assignment information that control module 23 is sent, if abnormal, then close optical module 22 sending function of place ONU and notify that the light emission instruction signal of control module 23 optical module 22 is abnormal；Accordingly, described control module 23, the abnormal notice of light emission instruction signal being additionally operable to receive the optical module 22 that abnormal luminous detection module 21 is sent preserves as testing result.
Described abnormal luminous detection module 21, specifically for opening T3 when receiving the notice that this upward signal stops, the delay threshold that whether light emission instruction signal that detection optical module 22 sends in real time stops and whether detection T3 is less than or equal to light emission instruction signal in real time, if T3 stops less than or equal to delay threshold and the light emission instruction signal of light emission instruction signal, then light emission instruction signal is normal, if T3 does not stop more than delay threshold and the light emission instruction signal of light emission instruction signal, then light emission instruction signal is abnormal.
Described abnormal luminous detection module 21, specifically for according to the interval thresholding between the upward signal in spacing parameter, judge that the interval between upward signal is the most normal, if it is normal, then continue to determine whether to be received again by the upward signal assignment information that control module 23 is sent, if abnormal, then close optical module 22 sending function of place ONU and notify that the interval between control module 23 upward signal is abnormal；Accordingly, described control module 23, the abnormal notice in interval being additionally operable to receive between the upward signal that abnormal luminous detection module 21 is sent preserves as testing result.
Described abnormal luminous detection module 21, during specifically for the interval between detection upward signal the most normally, T4 is opened when light emission instruction signal optical module 22 being detected stops, real-time measure and control module 23 the most again sends and starts to send upward signal, and whether detection T4 is less than or equal to the interval thresholding between preset upward signal in real time, if T4 is less than or equal to the interval thresholding between upward signal, and receive the notice starting again at transmission upward signal that control module 23 is sent, then the interval between upward signal is normal, if T4 is more than the interval thresholding between upward signal, and confiscate the notice again sending upward signal that control module 23 is sent, then the interval between upward signal is abnormal.
Described abnormal luminous detection module 21, specifically for utilizing the transmission cycle of calculated upward signal, judge that the transmission cycle of upward signal is the most normal, if it is normal, then the optical module 22 of notice control module 23 place ONU does not has unusual condition, otherwise, close optical module 22 sending function of place ONU and notify that the transmission cycle of control module 23 upward signal is abnormal；Accordingly, described control module 23, the transmission cycle abnormal notice being additionally operable to receive the upward signal that abnormal luminous detection module 21 is sent preserves as testing result, and the optical module 22 receiving the place ONU that abnormal luminous detection module 21 is sent does not has the notice of unusual condition to preserve as testing result.
Described abnormal luminous detection module 21, it is additionally operable to calculate according to twice upward signal assignment information, computational methods can be the difference of twice signal sending time, it is also possible to for adding the difference of the signal sending time that will send upward signal and signal sending time last time dispatching cycle according to DBA.
Described abnormal luminous detection module 21, it is additionally operable to detect whether in real time to receive the notice again sending upward signal that control module 23 sends, if detecting, then record the duration of current T2, the cycle of the current upward signal judging the duration of current T2 and calculate is the most identical, if identical, then the transmission cycle of upward signal is normal, otherwise, the transmission cycle of upward signal is abnormal.
Described control module 23, is additionally operable to select to enter test pattern according to practical operation, then notice optical module 22 and abnormal luminous detection module 21 start to send up test signal；Accordingly, described abnormal luminous detection module 21, specifically for starting to send the notice of up test signal according to control module 23, open T1 and T2.
Described abnormal luminous detection module 21, it is additionally operable to judge that the duration of current up test signal is the most normal, if the duration of current up test signal is normal, then start to judge that the transmission cycle of up test signal is the most normal, if the transmission cycle of up test signal is normal, then determine that controlled exception does not occur in the optical module 22 of ONU, and notify that controlled exception does not occur in the optical module 22 of control module 23 place ONU, otherwise, determine that the optical module 22 of ONU sends function controlled and occurs abnormal, close optical module 22 sending function of ONU, and notify that exception occurs in the optical module 22 of control module 23 place ONU；If the duration of current up test signal is abnormal, it is determined that the optical module 22 of ONU sends function controlled and occurs abnormal, closes optical module 22 sending function of ONU and notify that the optical module 22 of control module 23 place ONU sends function controlled and occurs abnormal；
Accordingly, described control module 23, the optical module 22 being additionally operable to receive the place ONU that abnormal luminous detection module 21 is sent sends function controlled appearance exception or controlled abnormal notice does not occur as testing result.
Described abnormal luminous detection module 21, whether duration is sent less than or equal to signal specifically for detection T1 in real time, if T1 sends duration less than or equal to signal and current up test signal stops sending, the width of the most current up test signal is normal, if T1 sends duration more than signal and current up test signal does not stop, the width of the most current up test signal is abnormal.
Described abnormal luminous detection module 21, specifically for the cycle according to preset up test signal, real-time measure and control module 23 sends the notice of up test signal the most again, if receiving, record the duration of current T2, judge that the duration of T2 is the most identical with the cycle of preset up test signal, if it is identical, the transmission cycle of the most up test signal is normal, otherwise, the transmission cycle of up test signal is abnormal, determine that optical module 22 sending function goes wrong, close optical module 22 sending function, subsequent detection and maintenance work is carried out according still further to prior art, do not repeat, after completing detection and maintenance, entrance mode of operation can be set by management personnel, notice optical module 22 starts to accept this signal sending time of OLT distribution and signal sends duration and sends upward signal to OLT.
The above, only presently preferred embodiments of the present invention, it is not intended to limit protection scope of the present invention.
Claims (6)
1. the method that the optical module detecting optical node ONU is abnormal luminous, it is characterized in that, the method includes: if according to twice upward signal assignment information of optical fiber cable termination equipment OLT distribution, judge that the transmission cycle of this upward signal is abnormal, then closing the optical module sending function of ONU, the transmission cycle of described upward signal calculates according to described twice upward signal assignment information；
Or, if the delay threshold according to the light emission instruction signal in preset spacing parameter, judge that current light emission instruction signal is abnormal or according to the interval thresholding between the upward signal in preset spacing parameter, it is determined that the interval between upward signal is abnormal, then close ONU optical module sending function；Described spacing parameter includes: the interval thresholding between delay threshold and the upward signal of light emission instruction signal；
The current light emission instruction signal of described judgement is abnormal, including: when stopping sending this upward signal, open time delay timer, the delay threshold that whether detection light emission instruction signal stops and whether detection delay timer is less than or equal to light emission instruction signal in real time in real time；If delay timer does not stop more than delay threshold and the light emission instruction signal of light emission instruction signal, then light emission instruction signal is abnormal；
Interval between described judgement upward signal is abnormal, including: open interval timer when light emission instruction signal stops, detecting whether in real time to start whether again to send upward signal real-time assay intervals timer less than or equal to the interval thresholding between upward signal；If interval timer is more than the interval thresholding between upward signal and the most again sends upward signal, then the interval between upward signal is abnormal.
Method the most according to claim 1, it is characterized in that, before transmission cycle of described this upward signal of judgement is abnormal, the method also includes: the interval thresholding between delay threshold and the upward signal of the light emission instruction signal that ONU saves presets is as spacing parameter；After ONU opens, receive and preserve signal sending time that optical fiber cable termination equipment OLT sends, signal sends duration and Dynamic Bandwidth Allocation DBA dispatching cycle is as this upward signal assignment information.
Method the most according to claim 1, it is characterised in that the transmission cycle of described this upward signal of judgement is abnormal, including: when starting to send this upward signal, open cycle timer；Detect whether in real time again to send upward signal, when detect again send upward signal time, record current period timer duration；The duration judging current period timer is the most identical with the cycle of the upward signal calculated, if identical, then the transmission cycle of upward signal is normal, and otherwise, the transmission cycle of upward signal is abnormal.
4. the device that the optical module detecting ONU is abnormal luminous, it is characterised in that this device includes: abnormal luminous detection module and optical module；Wherein,
Abnormal luminous detection module, if for the twice upward signal assignment information distributed according to optical fiber cable termination equipment OLT, judge that the transmission cycle of this upward signal is abnormal, then closing the optical module sending function of ONU, the transmission cycle of described upward signal calculates according to described twice upward signal assignment information；
Or, if the delay threshold according to the light emission instruction signal in preset spacing parameter, judge that current light emission instruction signal is abnormal or according to the interval thresholding between the upward signal in preset spacing parameter, it is determined that the interval between upward signal is abnormal, then close ONU optical module sending function；Described spacing parameter includes: the interval thresholding between delay threshold and the upward signal of light emission instruction signal；
Optical module, for receiving the sending function controlling to close self of abnormal luminous detection module；
Described abnormal luminous detection module, specifically for when receiving the notice stopping sending this upward signal, open time delay timer, the delay threshold that whether detection light emission instruction signal stops and whether detection delay timer is less than or equal to preset light emission instruction signal in real time in real time；If delay timer does not stop more than delay threshold and the light emission instruction signal of light emission instruction signal, then light emission instruction signal is abnormal；
Described abnormal luminous detection module, specifically for opening interval timer when light emission instruction signal stops, detecting whether that whether the notice starting again to send upward signal real-time assay intervals timer are less than or equal to the interval thresholding between preset upward signal in real time；If interval timer is more than the interval thresholding between upward signal and the most again sends upward signal, then the interval between upward signal is abnormal.
Device the most according to claim 4, it is characterized in that, described device also includes: control module, for resolving the downstream signal that optical module is sent, using the signal sending time of the upward signal in downstream signal, signal sends duration and DBA is sent to abnormal luminous detection module as this upward signal assignment information dispatching cycle；
Accordingly, described abnormal luminous detection module, specifically for the spacing parameter saved presets, after place ONU opens, receive and preserve this upward signal assignment information that control module is sent；
Described optical module, the downstream signal being additionally operable to send OLT is sent to control module.
Device the most according to claim 4, it is characterised in that
Described abnormal luminous detection module, after receiving the notice starting to send this upward signal that control module is sent, opens cycle timer；Detect whether in real time to receive the notice again sending upward signal, when detect again send upward signal time, record current period timer duration；The duration judging current period timer is the most identical with the cycle of the upward signal calculated, if identical, then the transmission cycle of upward signal is normal, and otherwise, the transmission cycle of upward signal is abnormal.
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| CN201210056462.6A CN103312409B (en) | 2012-03-06 | 2012-03-06 | The method and device that a kind of optical module detecting optical node is abnormal luminous |
| PCT/CN2012/076867 WO2013131336A1 (en) | 2012-03-06 | 2012-06-13 | Method and device for detecting abnormal light-emission of optical module of optical network unit |
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| CN104811240B (en) * | 2014-01-28 | 2017-09-01 | 中国电信股份有限公司 | Detect the method and OLT of abnormal luminous ONU in PON system |
| CN105337657B (en) * | 2014-08-15 | 2018-08-24 | 上海诺基亚贝尔股份有限公司 | Method and device in passive optical network for determining rogue ONU |
| CN105472482B (en) * | 2014-08-18 | 2020-03-17 | 中兴通讯股份有限公司 | Method for identifying state of optical module in ONU (optical network Unit) and ONU |
| CN104852764A (en) * | 2015-06-02 | 2015-08-19 | 上海斐讯数据通信技术有限公司 | System and method for detecting ONT abnormal luminescence with OLT in PON system |
| CN107294595B (en) * | 2016-03-30 | 2020-09-04 | 南京中兴新软件有限责任公司 | Detection method and device for long-luminescence optical network unit and optical line terminal |
| CN110361718B (en) * | 2019-08-16 | 2023-02-28 | 哈工大机器人（合肥）国际创新研究院 | Method and device for detecting abnormal light emission of light source |
| CN113301456B (en) * | 2020-02-24 | 2024-04-12 | 瑞昱半导体股份有限公司 | Optical network device with abnormal luminescence detection |
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