CN103312409A - Method and device for detecting abnormal light emission of optical module of optical network unit - Google Patents
Method and device for detecting abnormal light emission of optical module of optical network unit Download PDFInfo
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- CN103312409A CN103312409A CN2012100564626A CN201210056462A CN103312409A CN 103312409 A CN103312409 A CN 103312409A CN 2012100564626 A CN2012100564626 A CN 2012100564626A CN 201210056462 A CN201210056462 A CN 201210056462A CN 103312409 A CN103312409 A CN 103312409A
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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
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Abstract
The invention discloses a method for detecting abnormal light emission of an optical module of an optical network unit (ONU). The method comprises the step of closing a sending function of the optical module of the ONU if that the time length of the uplink signal is abnormal or that the sending period of the uplink signal is abnormal is detected according to assignment information of the uplink signal, or the step of closing the sending function of the optical module of the ONU if that a current light-emitting indication signal of a laser is abnormal or that the interval between uplink signals is abnormal is detected according to a preset interval parameter. The invention further discloses a device for detecting abnormal light emission of the optical module of the ONU. With the method and the device, abnormal light emission of the optical module of the ONU can be comprehensively and timely detected so that influence of abnormal light emission to other ONUs managed by a same interface of an optical line terminal (OLT) can be timely controlled, and reliability of a passive optical network (PON) can be further ensured.
Description
Technical field
The present invention relates to EPON (PON, the Passive Optical Network) technology in the optical network communication, relate in particular to abnormal luminous method and the device of optical module of a kind of detection optical node (ONU, Optical Network Unit).
Background technology
Along with the continuous development of optical communication technique, the application of PON also more and more widely.The network topology structure of PON arrives the physical topological structure of multiple spot for point, PON is by optical fiber cable termination equipment (OLT, Optical Line Terminal) and ONU form, because the uplink communication of PON adopts time division multiple access (TDMA, Time Division Multiple Access) mode of shared bandwidth, so when the optical module among the one or more ONU that manage under the same interface of OLT is not subjected to OLT control appearance abnormal luminous, will have influence on the regular traffic of other ONU of this OLT management.
At present, for the abnormal luminous problem of the optical module that solves above-mentioned ONU, following two solutions have been proposed:
One is that number of patent application is the disclosed a kind of fault active detecting partition method of CN200910110771.5 and optical link unit: the actual luminance of optical transmitting set that detects the optical module of ONU, the time window of the actual luminance of optical transmitting set and optical line terminal authorized appropriation is compared, when detecting optical transmitting set and when the time window of this optical line terminal authorized appropriation finishes, still be in luminance, judge further whether its fluorescent lifetime outside time window surpasses predefined time span, if surpass, judge that then optical module is unusual, close optical module.But, this patent can only be monitored at the default time span interior focusing module status that this authorized appropriation window begins after finish, and the default time span after can not finishing this authorized appropriation window finishes the back, begin optical module state variation before to next authorized appropriation window can't monitor.
Another is that number of patent application is the disclosed a kind of EPON protection system of CN200710087367.1 and method, comprise: luminous detecting unit compares the emission luminous power of the optical sender of terminal equipment and predetermined threshold and obtains testing result, and the protection control unit is respectively when described terminal equipment begins to send upstream data and when finish sending upstream data, opens to send the beginning timer and send the stop timing device; If send the beginning timer expiry or send the testing result of preserving in the overtime and protection control unit of stop timing device for the emission luminous power is not less than during described predetermined threshold; the protection control unit judges that terminal equipment breaks down the optical sender of the equipment of closing a terminal.But, transmission in this scheme begins timer or sends the fixed value of duration for rule of thumb arranging of stop timing device, and the transmission pulse duration that distributes for ONU among the PON may change according to network condition, judge the duration that sends the beginning timer or send the stop timing device so this scheme can't in time be adjusted according to actual conditions, and then may cause judging by accident fault.
As seen, such scheme, though can both solve the abnormal luminous problem of optical module of ONU to a certain extent,, otherwise the default time span after can not finishing this authorized appropriation window finishes the back, begins the abnormal luminous problem of monitor optical module before to next authorized appropriation window; Can not in time adjust according to actual conditions and judge transmission beginning timer expiry or send the overtime foundation of stop timing device, and then may cause judging by accident fault.Obviously, the abnormal luminous solution of present existing ONU, the optical module that can't satisfy comprehensively, in time detect ONU is abnormal luminous, thereby can't in time control the influence that abnormal luminous other ONU that manage for identical OLT bring, and then influences the reliability of PON.
Summary of the invention
In view of this, the object of the present invention is to provide abnormal luminous method and the device of optical module of a kind of ONU of detection, the optical module that can comprehensively, in time detect ONU is abnormal luminous, thereby in time controls the influence that abnormal luminous other ONU that manage for identical OLT bring, and then guarantees the reliability of PON.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides the abnormal luminous method of optical module of a kind of ONU of detection, this method comprises: if according to this upward signal assignment information, judge that the duration of this upward signal is undesired or judge that the transmission cycle of this upward signal is undesired, then close the optical module sending function of ONU;
Perhaps, if according to the spacing parameter that presets, judge that current light emission instruction signal is undesired or judge that the interval between the upward signal is undesired, then close ONU optical module sending function.
In the such scheme, described according to before this upward signal assignment information, this method also comprises: the time-delay thresholding of the light emission instruction signal that ONU saves presets and the interval thresholding between the upward signal are as spacing parameter; After ONU opens, receive and preserve signal sending time, signal that OLT sends and send duration and Dynamic Bandwidth Allocation (DBA, Dynamic Bandwidth Allocation) dispatching cycle as this upward signal assignment information.
In the such scheme, the duration of described this upward signal of judgement is undesired, comprising: detect pulse width timer in real time and whether send duration smaller or equal to signal; If pulse width timer sends duration smaller or equal to signal and this upward signal stops to send, then the duration of this upward signal is normal; If pulse width timer sends duration greater than signal and this upward signal does not stop, then the duration of this upward signal is undesired.
In the such scheme, before the transmission cycle of described this upward signal of judgement was undesired, this method also comprised: the transmission cycle that calculates upward signal according to the twice upward signal assignment information that receives.
In the such scheme, the transmission cycle of described this upward signal of judgement is undesired, comprising: detect in real time and whether send upward signal again, when detecting when sending upward signal again the duration of record current period timer; Whether the duration of judging the current period timer identical with the cycle of the upward signal that calculates, if identical, then the transmission cycle of upward signal normal, otherwise the transmission cycle of upward signal is undesired.
In the such scheme, the current light emission instruction signal of described judgement is undesired, comprise: when stopping to send this upward signal, open delay timer, detect light emission instruction signal in real time and whether stop, and detect delay timer in real time whether smaller or equal to the time-delay thresholding of light emission instruction signal; If delay timer stops smaller or equal to time-delay thresholding and the light emission instruction signal of light emission instruction signal, then light emission instruction signal is normal; If delay timer does not stop greater than time-delay thresholding and the light emission instruction signal of light emission instruction signal, then light emission instruction signal is undesired.
In the such scheme, interval between the described judgement upward signal is undesired, comprise: open interval timer when light emission instruction signal stops, whether whether detection in real time begin to send again upward signal, also real-time assay intervals timer smaller or equal to the interval thresholding between the upward signal; If interval timer sends upward signal again smaller or equal to the interval thresholding between the upward signal and beginning, then the interval between the upward signal is normal; If interval timer is greater than the interval thresholding between the upward signal and do not send upward signal again, then the interval between the upward signal is undesired.
The present invention also provides the optical module of a kind of ONU of detection abnormal luminous device, and this device comprises: abnormal luminous detection module and optical module; Wherein,
If abnormal luminous detection module is used for according to this upward signal assignment information, judges that the duration of this upward signal is undesired or judge that the transmission cycle of this upward signal is undesired, then closes the optical module sending function of place ONU; Perhaps, if according to the spacing parameter that presets, judge that current light emission instruction signal is undesired or judge that the interval between the upward signal is undesired, close the optical module sending function of place ONU;
Optical module, the sending function of self is closed in the control that is used for the abnormal luminous detection module of reception.
In the such scheme, described device also comprises: control module, be used for to resolve the downstream signal that optical module is sent, signal sending time, the signal of the upward signal in the downstream signal sent duration and DBA sends to abnormal luminous detection module as this upward signal assignment information dispatching cycle;
Accordingly, described abnormal luminous detection module, concrete for the spacing parameter that saves presets, after place ONU opens, receive and also preserve this upward signal assignment information that control module is sent;
Described optical module, the downstream signal that also is used for OLT is sent sends to control module.
In the such scheme, described abnormal luminous detection module, concrete for whether detecting pulse width timer in real time smaller or equal to signal transmission duration, if pulse width timer sends duration and receives the notice that this upward signal stops to send smaller or equal to signal, then the duration of this upward signal is normal, if pulse width timer sends duration and do not receive the notice that this upward signal stops to send greater than signal, then the duration of this upward signal is undesired.
In the such scheme, described abnormal luminous detection module is also for the transmission cycle that calculates upward signal according to the twice upward signal assignment information that receives.
In the such scheme, described abnormal luminous detection module specifically is used for real-time detection and whether receives the notice of sending upward signal again, when detecting when sending upward signal again the duration of record current period timer; Whether the duration of judging the current period timer identical with the cycle of the upward signal that calculates, if identical, then the transmission cycle of upward signal normal, otherwise the transmission cycle of upward signal is undesired.
In the such scheme, described abnormal luminous detection module, concrete being used for when receiving when stopping to send the notice of this upward signal, open delay timer, detect light emission instruction signal in real time and whether stop, and detect delay timer in real time whether smaller or equal to the time-delay thresholding of the light emission instruction signal that presets; If delay timer stops smaller or equal to time-delay thresholding and the light emission instruction signal of light emission instruction signal, then light emission instruction signal is normal; If delay timer does not stop greater than time-delay thresholding and the light emission instruction signal of light emission instruction signal, then light emission instruction signal is undesired.
In the such scheme, described abnormal luminous detection module, specifically be used for opening when light emission instruction signal stops interval timer, whether detection in real time has beginning whether to send the notice of upward signal, also real-time assay intervals timer again smaller or equal to the interval thresholding between the upward signal that presets; If interval timer sends upward signal again smaller or equal to the interval thresholding between the upward signal and beginning, then the interval between the upward signal is normal; If interval timer is greater than the interval thresholding between the upward signal and do not send upward signal again, then the interval between the upward signal is undesired.
Abnormal luminous method and the device of optical module of detection ONU provided by the present invention, by the interval between the duration of this upward signal, the transmission cycle of upward signal, current light emission instruction signal and the upward signal is detected, thereby avoid this upward signal to be sent completely before the back sends to next upward signal, a period of time occurring can't the abnormal luminous problem of monitor optical module; In addition, by detecting the duration of this upward signal, the transmission cycle of this upward signal according to the upward signal assignment information that receives in real time, judge the problem that sends the beginning timer expiry or send the overtime foundation of stop timing device thereby avoid in time to adjust according to actual conditions; Thereby the optical module that detects ONU comprehensively, timely is abnormal luminous, in time controls the influence that abnormal luminous other ONU that manage for identical OLT bring, and then guarantees the reliability of PON.
Description of drawings
Fig. 1 detects the abnormal luminous method flow schematic diagram of optical module of ONU for the present invention;
Fig. 2 detects the composition structural representation of the abnormal luminous device of the optical module of ONU for the present invention.
Embodiment
Basic thought of the present invention is: if according to this upward signal assignment information, judge that the duration of this upward signal is undesired or judge that the transmission cycle of this upward signal is undesired, then close the optical module sending function of ONU; Perhaps, if undesired according to the spacing parameter that presets, judge that current light emission instruction signal is undesired or judge that the interval between the upward signal is undesired, then close ONU optical module sending function.
Wherein, described upward signal assignment information is that OLT is according to the Multi-point Control Protocol (MPCP of prior art, Multi-Point Control Protocol) downstream signal that sends to ONU of regulation, comprising: the signal sending time of upward signal, signal send duration and DBA dispatching cycle etc.;
Described spacing parameter comprises: the time-delay thresholding of light emission instruction signal and the interval thresholding between the upward signal; Wherein, the time value of the time-delay thresholding of described light emission instruction signal for presetting according to actual conditions, relevant with the performance of the employed voltage comparator of actual generation light emission instruction signal among the ONU, such as, if use high speed voltage comparator of the prior art, then can preset the time-delay thresholding is 40ns; The generation of described light emission instruction signal and transmission are the prior art of the optical module of ONU, do not do here and give unnecessary details;
Pocket door between the described upward signal is limited to the time value that arranges according to actual conditions, can preset according to the pulse period among the PON, such as, can be 100us.
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
A kind of abnormal luminous method of optical module that detects ONU provided by the invention as shown in Figure 1, may further comprise the 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 begins 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, judge whether the duration of this upward signal is normal, if normal, then execution in step 104; If undesired, then execution in step 108.
Here, described judgement comprises: detect T1 in real time and whether send duration smaller or equal to signal; If T1 sends duration smaller or equal to signal and this upward signal stops to send, then the duration of this upward signal is normal; If T1 sends duration greater than signal and this upward signal does not stop, then the duration of this upward signal is undesired.
Step 104: according to the time-delay thresholding of the light emission instruction signal in the spacing parameter, judge whether light emission instruction signal is normal, if normal, then execution in step 105; Otherwise, execution in step 108.
Whether here, described judgement comprises: when stopping to send this upward signal, open delay timer (T3), detect light emission instruction signal in real time and stop, and detect T3 in real time whether smaller or equal to the time-delay thresholding of light emission instruction signal; If T3 stops smaller or equal to time-delay thresholding and the light emission instruction signal of light emission instruction signal, then light emission instruction signal is normal; If T3 does not stop greater than time-delay thresholding and the light emission instruction signal of light emission instruction signal, then light emission instruction signal is undesired.
Step 105: judge whether the upward signal assignment information of receiving that again OLT sends, if confiscate, then execution in step 106; If receive that then execution in step 107.
Step 106: according to the interval thresholding between the upward signal in the spacing parameter, judge whether the interval between the upward signal is normal, if normal, then return step 105; If undesired, then execution in step 108.
Here, described judgement comprises: open interval timer (T4) when detecting light emission instruction signal and stop, detecting in real time and whether begin to send upward signal again, and whether detect T4 in real time smaller or equal to the interval thresholding between the upward signal; If T4 is smaller or equal to the interval thresholding between the upward signal and begin to send upward signal again, then the interval between the upward signal is normal; If T4 is greater than the interval thresholding between the upward signal and do not send upward signal again, then the interval between the upward signal is undesired.
Step 107: utilize the transmission cycle of the upward signal that calculates, judge whether the transmission cycle of this upward signal is normal, if normal, then the testing result of the optical module of ONU is not for having unusual condition, the end process flow process; Otherwise, execution in step 108.
Here, the transmission cycle of the described upward signal that calculates calculates for twice upward signal assignment information of distributing according to OLT, computational methods can be for twice signal sending time poor, also can add dispatching cycle for the DBA that distributes according to OLT the signal sending time that is about to send upward signal and last time signal sending time poor; Concrete adopt which kind of computational methods can be according to actual conditions, set by administrative staff;
Described judging whether normally is: detect ONU in real time and whether begin to send upward signal again, when detecting ONU and begin to send upward signal, record the duration of current T2; Whether the duration of T2 of judging current record identical with the cycle of the upward signal that calculates, if identical, then the transmission cycle of upward signal normal, otherwise the transmission cycle of upward signal is undesired.
Step 108: close ONU optical module sending function.
Here, described closing can be realized, also can realize that specific implementation is prior art, does not do and gives unnecessary details here by the transmitting terminal power supply of closing optical module by the power supply by light-emitting diode in the optical module circuit of closing ONU.
In addition, after the step 108, can also be according to entering the Rule of judgment of step 108, carry out subsequent operation, such as: when the condition that enters step 108 is interval between the undesired or upward signal of current light emission instruction signal when undesired, then the optical module of ONU self goes wrong, and resets after can ONU being set to silent status according to prior art again, begin to receive the information that OLT issues, execution in step 101 according to prior art again.
When the condition that enters step 108 is duration transmission cycle undesired or this upward signal of this upward signal when undesired, can enter test pattern, carry out following steps:
When beginning to send up test signal, opens step a:ONU T1 and T2.
Here, described up test signal is that ONU sends length according to preset test signals transmitting time, test signal and the test signal transmission cycle is sent upward signal.
Step b: whether the duration of judging current up test signal is normal, if normal, and execution in step c then; If undesired, execution in step d then.
Here, described judgement comprises: ONU sends up test signal, and whether detects T1 in real time smaller or equal to signal transmission duration; If T1 sends duration smaller or equal to signal and this upward signal stops to send, then the duration of up test signal is normal; If T1 sends duration greater than signal and this upward signal does not stop, then the duration of up test signal is undesired.
Step c: whether the transmission cycle of judging up test signal is normal, if normal, the optical module of then determining ONU does not occur controlled unusual, the end process flow process; Otherwise, execution in step d.
Here, described being judged as: detect ONU in real time and whether begin to send up test signal again, when detecting ONU and begin to send up test signal, record the duration of current T2; Whether the duration of current T2 is identical with the preset test signals transmission cycle, if identical, then the transmission cycle of up test signal is normal; Otherwise the transmission cycle of up test signal is undesired.
Steps d: the optical module of determining ONU sends the function controlled appearance unusually, closes the optical module sending function of ONU.
Further, after above-mentioned steps d finishes, can carry out subsequent detection and maintenance work to optical module according to prior art, not do here and give unnecessary details; After finishing detection and maintenance, beginning execution in step 101.
The present invention proposes the abnormal luminous device of optical module of a kind of ONU of detection, as shown in Figure 2, comprising: abnormal luminous detection module 21 and optical module 22; Wherein,
If abnormal luminous detection module 21 is used for according to this upward signal assignment information, judges that the duration of this upward signal is undesired or judge that the transmission cycle of this upward signal is undesired, then closes optical module 22 sending functions of place ONU; Perhaps, if according to the spacing parameter that presets, judge that current light emission instruction signal is undesired or judge that the interval between the upward signal is undesired, close optical module 22 sending functions of place ONU;
Described optical module 22 has the optical module all functions of the ONU that stipulates in the prior art, does not do here and gives unnecessary details.
Described device also comprises: control module 23, be used for to resolve the downstream signal that optical module 22 is sent, signal sending time, the signal of the upward signal in the downstream signal sent duration and DBA sends to abnormal luminous detection module 21 as this upward signal assignment information dispatching cycle; Accordingly, described abnormal luminous detection module 21, concrete for the spacing parameter that saves presets, after place ONU opens, receive and also preserve this upward signal assignment information that control module 23 is sent; Described optical module 22, the downstream signal that also is used for OLT is sent sends to control module 23.
Described control module 23 is concrete for notifying optical module 22 and abnormal luminous detection module 21 to begin to send this upward signal; Accordingly, described optical module 22, the concrete control that is used for receiving control module 23; Described abnormal luminous detection module 21, concrete be used for receiving control module 23 sends begin to send the notice of this upward signal after, open T2 and T1.
Described abnormal luminous detection module 21, concrete being used for sends duration according to the signal of this upward signal assignment information, whether the duration of judging this upward signal is normal, if it is normal, begin then to judge whether light emission instruction signal is normal, if undesired, then close optical module 22 sending functions of place ONU and notify the duration of control module 23 these upward signals undesired; Accordingly, described control module 23, the abnormal notice of duration that also be used for to receive this upward signal that abnormal luminous detection module 21 sends is preserved as testing result.
Described abnormal luminous detection module 21, concrete for whether detecting T1 in real time smaller or equal to signal transmission duration, if T1 sends duration smaller or equal to signal and receives the notice that stops to send this upward signal that control module 23 is sent, then the duration of this upward signal is normal, if T1 sends duration greater than signal and for to receive the notice that stops to send this upward signal, then the duration of this upward signal is undesired; Accordingly, described control module 23 also is used for notice optical module 22 and abnormal luminous detection module 21 and stops to send this upward signal.
Described abnormal luminous detection module 21, the concrete time-delay thresholding that is used for according to the light emission instruction signal of spacing parameter, whether the light emission instruction signal of judging optical module 22 is normal, if it is normal, then judge whether the upward signal assignment information of receiving that again control module 23 is sent, if undesired, then close optical module 22 sending functions of place ONU and notify the light emission instruction signal of control module 23 optical modules 22 undesired; Accordingly, described control module 23, the abnormal notice of light emission instruction signal that also be used for to receive the optical module 22 that abnormal luminous detection module 21 sends is preserved as testing result.
Described abnormal luminous detection module 21, concrete for when receiving the notice that this upward signal stops, opening T3, whether detect in real time the light emission instruction signal that optical module 22 sends stops, and detects T3 in real time whether smaller or equal to the time-delay thresholding of light emission instruction signal, if T3 stops smaller or equal to time-delay thresholding and the light emission instruction signal of light emission instruction signal, then light emission instruction signal is normal, if T3 does not stop greater than time-delay thresholding and the light emission instruction signal of light emission instruction signal, then light emission instruction signal is undesired.
Described abnormal luminous detection module 21, concrete being used for according to the interval thresholding between the upward signal of spacing parameter, judge whether the interval between the upward signal is normal, if it is normal, then continue to judge whether the upward signal assignment information of receiving that again control module 23 is sent, if undesired, then close optical module 22 sending functions of place ONU and notify the interval between control module 23 upward signals undesired; Accordingly, described control module 23, the abnormal notice in interval that also be used for to receive between the upward signal that abnormal luminous detection module 21 sends is preserved as testing result.
Described abnormal luminous detection module 21, specifically for detection of the interval between the upward signal whether just often, when stopping, opening the light emission instruction signal that detects optical module 22 T4, whether detection control module 23 is sent again and is begun to send upward signal in real time, and whether detect T4 in real time smaller or equal to the interval thresholding between the upward signal that presets, if T4 is smaller or equal to the interval thresholding between the upward signal, and receive the notice that begins to send upward signal again that control module 23 is sent, then the interval between the upward signal is normal, if T4 is greater than the interval thresholding between the upward signal, and confiscate the notice that sends upward signal again that control module 23 is sent, then the interval between the upward signal is undesired.
Described abnormal luminous detection module 21, the concrete transmission cycle that is used for utilizing the upward signal that calculates, whether the transmission cycle of judging upward signal is normal, if it is normal, then notify control module 23 place ONU optical module 22 do not have a unusual condition, otherwise, close optical module 22 sending functions of place ONU and notify the transmission cycle of control module 23 upward signals undesired; Accordingly, described control module 23, the abnormal notice of transmission cycle that also be used for to receive the upward signal that abnormal luminous detection module 21 sends is preserved as testing result, and the optical module 22 that receives the place ONU that abnormal luminous detection module 21 sends does not have the notice of unusual condition to preserve as testing result.
Described abnormal luminous detection module 21, also be used for calculating according to twice upward signal assignment information, computational methods can be for twice signal sending time poor, also can for add dispatching cycle according to DBA the signal sending time that is about to send upward signal and last time signal sending time poor.
Described abnormal luminous detection module 21, also be used for real-time detection and whether receive the notice of sending upward signal again that control module 23 is sent, if detect, then record the duration of current T2, whether the duration of judging current T2 is identical with the cycle of the current upward signal that calculates, if identical, then the transmission cycle of upward signal is normal, otherwise the transmission cycle of upward signal is undesired.
Described control module 23 also is used for selecting to enter test pattern according to practical operation, then notifies optical module 22 and abnormal luminous detection module 21 to begin to send up test signal; Accordingly, described abnormal luminous detection module 21, the concrete notice that begins to send up test signal that is used for according to control module 23 is opened T1 and T2.
Described abnormal luminous detection module 21, also be used for judging whether the duration of current up test signal is normal, if the duration of current up test signal is normal, begin then to judge whether the transmission cycle of up test signal is normal, if the transmission cycle of up test signal is normal, the optical module 22 of then determining ONU does not occur controlled unusual, and the optical module 22 of notice control module 23 place ONU does not occur controlled unusual, otherwise, the optical module 22 of determining ONU sends the function controlled appearance unusually, closes optical module 22 sending functions of ONU, and the optical module 22 of notice control module 23 place ONU occurs unusual; If the duration of current up test signal is undesired, then the optical module 22 transmission function controlled of definite ONU occur unusually, close optical module 22 sending functions of ONU and notify the optical module 22 of control module 23 place ONU to send the function controlled appearance unusually;
Accordingly, described control module 23, the optical module 22 that also be used for to receive the place ONU that abnormal luminous detection module 21 sends sends function controlled and occurs occurring controlled unusual notice unusually or not as testing result.
Described abnormal luminous detection module 21, concrete for whether detecting T1 in real time smaller or equal to signal transmission duration, if T1 sends duration smaller or equal to signal and current up test signal stops to send, then the width of current up test signal is normal, if T1 sends duration greater than signal and current up test signal does not stop, then the width of current up test signal is undesired.
Described abnormal luminous detection module 21, the concrete cycle that is used for according to the up test signal that presets, detect the notice whether control module 23 sends up test signal again in real time, if receive the duration that then records current T2, whether the duration of judging T2 is identical with the cycle of the up test signal that presets, if it is identical, then the transmission cycle of up test signal is normal, otherwise, the transmission cycle of up test signal is undesired, determine that optical module 22 sending functions go wrong, close optical module 22 sending functions, carry out subsequent detection and maintenance work according to prior art again, do not do here and give unnecessary details, after finishing detection and maintenance, can be arranged by administrative staff and enter mode of operation, notice optical module 22 begins to accept this signal sending time that OLT distributes and signal and sends duration and send upward signal to OLT.
The above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.
Claims (14)
1. abnormal luminous method of optical module that detects optical node ONU, it is characterized in that, this method comprises: if according to this upward signal assignment information, judge that the duration of this upward signal is undesired or judge that the transmission cycle of this upward signal is undesired, then close the optical module sending function of ONU;
Perhaps, if according to the spacing parameter that presets, judge that current light emission instruction signal is undesired or judge that the interval between the upward signal is undesired, then close ONU optical module sending function.
2. method according to claim 1 is characterized in that, described according to before this upward signal assignment information, this method also comprises: the time-delay thresholding of the light emission instruction signal that ONU saves presets and the interval thresholding between the upward signal are as spacing parameter; After ONU opens, receive and preserve signal sending time, signal that optical fiber cable termination equipment OLT sends and send duration and Dynamic Bandwidth Allocation DBA dispatching cycle as this upward signal assignment information.
3. method according to claim 1 is characterized in that, the duration of described this upward signal of judgement is undesired, comprising: detect pulse width timer in real time and whether send duration smaller or equal to signal; If pulse width timer sends duration smaller or equal to signal and this upward signal stops to send, then the duration of this upward signal is normal; If pulse width timer sends duration greater than signal and this upward signal does not stop, then the duration of this upward signal is undesired.
4. method according to claim 1 is characterized in that, before the transmission cycle of described this upward signal of judgement was undesired, this method also comprised: the transmission cycle that calculates upward signal according to the twice upward signal assignment information that receives.
5. method according to claim 4, it is characterized in that the transmission cycle of described this upward signal of judgement is undesired, comprising: detect in real time and whether send upward signal again, when detecting when sending upward signal again the duration of record current period timer; Whether the duration of judging the current period timer identical with the cycle of the upward signal that calculates, if identical, then the transmission cycle of upward signal normal, otherwise the transmission cycle of upward signal is undesired.
6. method according to claim 1, it is characterized in that, the current light emission instruction signal of described judgement is undesired, comprise: when stopping to send this upward signal, open delay timer, detect light emission instruction signal in real time and whether stop, and detect delay timer in real time whether smaller or equal to the time-delay thresholding of light emission instruction signal; If delay timer stops smaller or equal to time-delay thresholding and the light emission instruction signal of light emission instruction signal, then light emission instruction signal is normal; If delay timer does not stop greater than time-delay thresholding and the light emission instruction signal of light emission instruction signal, then light emission instruction signal is undesired.
7. method according to claim 1, it is characterized in that, interval between the described judgement upward signal is undesired, comprise: open interval timer when light emission instruction signal stops, whether whether detection in real time begin to send again upward signal, also real-time assay intervals timer smaller or equal to the interval thresholding between the upward signal; If interval timer sends upward signal again smaller or equal to the interval thresholding between the upward signal and beginning, then the interval between the upward signal is normal; If interval timer is greater than the interval thresholding between the upward signal and do not send upward signal again, then the interval between the upward signal is undesired.
8. the abnormal luminous device of optical module that detects ONU is characterized in that this device comprises: abnormal luminous detection module and optical module; Wherein,
If abnormal luminous detection module is used for according to this upward signal assignment information, judges that the duration of this upward signal is undesired or judge that the transmission cycle of this upward signal is undesired, then closes the optical module sending function of place ONU; Perhaps, if according to the spacing parameter that presets, judge that current light emission instruction signal is undesired or judge that the interval between the upward signal is undesired, close the optical module sending function of place ONU;
Optical module, the sending function of self is closed in the control that is used for the abnormal luminous detection module of reception.
9. device according to claim 8, it is characterized in that, described device also comprises: control module, be used for to resolve the downstream signal that optical module is sent, signal sending time, the signal of the upward signal in the downstream signal sent duration and DBA sends to abnormal luminous detection module as this upward signal assignment information dispatching cycle;
Accordingly, described abnormal luminous detection module, concrete for the spacing parameter that saves presets, after place ONU opens, receive and also preserve this upward signal assignment information that control module is sent;
Described optical module, the downstream signal that also is used for OLT is sent sends to control module.
10. device according to claim 8 is characterized in that,
Described abnormal luminous detection module, concrete for whether detecting pulse width timer in real time smaller or equal to signal transmission duration, if pulse width timer sends duration and receives the notice that this upward signal stops to send smaller or equal to signal, then the duration of this upward signal is normal, if pulse width timer sends duration and do not receive the notice that this upward signal stops to send greater than signal, then the duration of this upward signal is undesired.
11. device according to claim 8 is characterized in that,
Described abnormal luminous detection module is also for the transmission cycle that calculates upward signal according to the twice upward signal assignment information that receives.
12. device according to claim 11 is characterized in that,
Described abnormal luminous detection module specifically is used for real-time detection and whether receives the notice of sending upward signal again, when detecting when sending upward signal again the duration of record current period timer; Whether the duration of judging the current period timer identical with the cycle of the upward signal that calculates, if identical, then the transmission cycle of upward signal normal, otherwise the transmission cycle of upward signal is undesired.
13. device according to claim 8 is characterized in that,
Described abnormal luminous detection module, concrete being used for when receiving when stopping to send the notice of this upward signal, open delay timer, detect light emission instruction signal in real time and whether stop, and detect delay timer in real time whether smaller or equal to the time-delay thresholding of the light emission instruction signal that presets; If delay timer stops smaller or equal to time-delay thresholding and the light emission instruction signal of light emission instruction signal, then light emission instruction signal is normal; If delay timer does not stop greater than time-delay thresholding and the light emission instruction signal of light emission instruction signal, then light emission instruction signal is undesired.
14. device according to claim 8 is characterized in that,
Described abnormal luminous detection module, specifically be used for opening when light emission instruction signal stops interval timer, whether detection in real time has beginning whether to send the notice of upward signal, also real-time assay intervals timer again smaller or equal to the interval thresholding between the upward signal that presets; If interval timer sends upward signal again smaller or equal to the interval thresholding between the upward signal and beginning, then the interval between the upward signal is normal; If interval timer is greater than the interval thresholding between the upward signal and do not send upward signal again, then the interval between the upward signal is undesired.
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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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| 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 |
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Also Published As
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| WO2013131336A1 (en) | 2013-09-12 |
| CN103312409B (en) | 2016-08-03 |
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