CN101317349A - Passive optical network maintenance method, optical network unit and optical line terminal - Google Patents
Passive optical network maintenance method, optical network unit and optical line terminal Download PDFInfo
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- CN101317349A CN101317349A CN200780000412.3A CN200780000412A CN101317349A CN 101317349 A CN101317349 A CN 101317349A CN 200780000412 A CN200780000412 A CN 200780000412A CN 101317349 A CN101317349 A CN 101317349A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
- H04B10/0771—Fault location on the transmission path
Abstract
A method for maintaining the passive optical network, an optical network element and an optical line terminal are used for solve the problem that it can not detect and insulate the failed optical module at the optical line terminal side in the prior art. In the said maintaining method, when the optical line terminal detects the continuously occupied time of the upstream communication line exceeds the preset threshold, it detects the failed optical network element continuously occupying the upstream communication line, and indicates the failed optical network unit to shut off the transmitting circuit power with control message or control signal.; In order to realize the method, the optical line terminal of the invention includes a maintaining module for detecting the fault and performing the fault processing, the transmitting power and the receiving power of the optical network element are placed independently, and the transmitting power control module turns on or shuts off the transmitting power according to the control message or control signal of the optical line terminal. The technical scheme of the invention realizes the detect and the insulation of the failed optical network element.
Description
" EPON maintaining method, optical network unit and optical line terminal technical field
It is more particularly to a kind of Wu source Guang Wang Network maintaining methods, optical network unit and optical line terminal the present invention relates to EPON.Background technology
In increasing Kuan band Jie Ru Wang Network, existing most of LAN is operated in 100Mbit/s access network, and many large-scale commercial companies are to gigabit Ethernet（GE, Gigabit Ethernet) transition.And, Synchronous Optical Network online in Metro core network and metro edge（SONET, Synchronous Optical Network)/SDH（SDH, Synchronous Digital Hierarch)/GE bandwidth capacitys are very abundant, and this causes access mesh portions to generate serious bandwidth bottleneck.Compared with cable transmission, optical fiber transmission has the advantages such as capacity is big, loss is small, anti-electromagnetic interference capability is strong, thus, with the progressively decline of optical fiber transmission cost, the optical fiber of access network is inevitable development trend.EPON（PON, Passive Optical Network) it is one of major technique of intelligent acess, according to the degree that optical fiber is deep, intelligent acess can be divided into fiber to the home（FTTH, Fiber to the Home), FTTB（FTTB, Fiber to the Building/Curb), Fiber To The Curb（FTTCurb, Fiber to the Curb) Fiber To The Cabinet（FTTC, Fiber to the Cabinet), FTTP（FTTP, Fiber to the Premises) etc., optical fiber is referred to as to X (FTTX, Fiber to the X).
Classify from the content of carrying, PON technologies mainly include APON (ATM Based PONs), EPON (Ethernet Based PONs) and GPON (Gigabit PONs) etc., as shown in figure 1, PON includes the optical line terminal positioned at central office（OLT, Optical Line Terminal) and a series of optical network unit/terminals positioned at user resident（ONU/ONT, Optical Network Unit/ Terminal), the Optical Distribution Network being made up of between OLT and ONU/ONT optical fiber, passive optical splitters or coupler（ODN, Optical Distribution Network) connection.
In a PON, simple optical fiber can be pulled out from service exchange to broadband services sub-district or office garden, then some branch roads are isolated to each building from main fiber with passive optical splitters or coupler again
Or on business device.Which can make multiple users to share this section of relatively expensive optical fiber link from exchange to user resident, thus also greatly reduce FTTB and FTTH use cost.
Any active device is not present between Central Exchange to the local network of users without source light net Network, the substitute is and Passive Optical Components is inserted into network, and realize unicast to multiple spot by power distribution on whole path.This replace causes service provider no longer to need the active device into transmission loop to provide the energy and carry out maintaining, greatlys save the cost of service provider.Passive optical splitter and coupler only serves transmission and the effect of limitation light, it is not necessary to power supply and information processing, can be with the maintenance cost of overall reduction service supplier.
By using APON/BPON, EPON or the GPON technologies that will be standardized, 155Mbit/s, 622Mbit/s, 1.25Gbit/s or 2.5Gbit/s speed can be supported on PON trunk optical fiber.To support voice, data and Video Applications simultaneously, the bandwidth allocation of each user can be static or dynamic.
Wherein, existing OLT basic structures as shown in Fig. 2 ONU/ONT basic structure as shown in figure 3, all include transmitting-receiving optical signal optical module, Service Processing Module and power module, wherein：Optical module includes：
Receiving circuit, connects uplink, for receiving upward signal and carrying out opto-electronic conversion；Transtation mission circuit, connects downlink, for being sent after electric signal to be sent is carried out into opto-electronic conversion by downlink；
SD (Signal Detect, signal detection）Whether signal monitoring circuit, for monitoring whether uplink is persistently taken, i.e., have optical signal arrival, and exports testing result by SD terminals, and if optical signal is reached, SD terminals output signal is high level, otherwise output low level；
Working power circuit, for providing working power to optical module, in the prior art, the working power of transtation mission circuit and receiving circuit, which merges, to be set.
OLT Service Processing Module one end passes through central site network interface（CNI, Central Network Interface) the up net ^ of connection local side1Mouth, ONU/ONT-end passes through User Network Interface（UNI, User Network Interface) connection user equipment, certainly, necessary control module is also included in OLT, ONU/ONT basic structure.
Downstream data flow is broadcast to each ONU/ONT from OLT in PON, and each ONU/ONT is handled by the address information in match protocol transmission unit head, the only data to destination address and its own matching.Up flow transmission is relatively complicated, and in point-to-multipoint Wu in the Guang Wang Network systems of source, because ODN has the characteristic of share medium, each ONU/ONT terminal passes through time division multiple acess（TDMA, Time Division Multiple Addressing) mode to OLT send data, in order to avoid the generation of conflict, under normal circumstances, it is the different time slots of the ONU/ONT distribution of registration that OLT deposits situation according to the Slow of the ONU/ONT data to be sent reported（Authorize）, the time slot that ONU is only distributed in OLT（Authorize）Interior opening optical module, therefore under normal circumstances, uplink timesharing takes, the SD signals of OLT sidelight modules are pulse signal.
OLT distributes time slot to each ONU（Authorize）, it is ensured that it can be lighted in synchronization only one of which ONU, i.e., specific transmission time slice represents specific ONU/ONT, these synchronous timeslices can avoid different ONU/ONT from producing conflict between happening suddenly.But if some ONU/ONT optical module failure, in normal luminance, or there is malicious user to be set to optical module often to light, other ONU being so connected in this ONU under same OLT ports will all paralyse, compared with traditional Point-to-Point system, such influence is unacceptable.The content of the invention
The embodiment of the present invention provides a kind of EPON maintaining method, optical network unit and optical line terminal, in the prior art can not be the problem of the detection of optical line terminal side and isolated fault optical module with solution.
A kind of maintaining method of EPON, including：
Optical line terminal monitors the lasting holding time of uplink, and detection persistently takes the failure Guang Wang Network units of the uplink when monitoring that the lasting holding time exceedes given threshold；
Optical line terminal indicates that the failure optical network unit closes transtation mission circuit power supply.
A kind of optical network unit, including optical module, in addition to：
Power module is sent, for providing working power to the transtation mission circuit of the optical module；
Energy supply control module is sent, for being switched on or off the transmission power module according to external power source control instruction.
A kind of optical line terminal, including optical module, the optical line terminal also include：
Breakdown Maintenance module, the uplink for monitoring the optical module connection continues the malfunction that holding time explains value more than setting, detects failure source and carries out Breakdown Maintenance.
In EPON maintaining method described in the embodiment of the present invention, monitor whether occur normal failure light emission by optical line unit side, and carry out the detection and maintenance of failure light net Network units, malfunction monitoring and testing mechanism realize that cylinder is singly reliable, realize isolation and the Breakdown Maintenance of normal failure light emission optical network unit.Brief description of the drawings
Fig. 1 is existing PON structural representation；
Fig. 2 is existing OLT structural representations；
Fig. 3 is existing ONU structural representations；
Fig. 4, Fig. 5 are normal failure light emission detection maintenance process schematic diagram provided in an embodiment of the present invention；Fig. 6 is a kind of OLT structural representations provided in an embodiment of the present invention；
Fig. 7 is a kind of ONU structural representations provided in an embodiment of the present invention.Embodiment
To ensure the normal operation of network, when there is when being in normal luminance because of burst disabler of some or some ONU/ONT (hereinafter referred to as ONU) terminal, need to isolate the ONU of failure, the O J users for making it not interfere with other normal works.
Firstly, it is necessary to which OLT can be detected and be judged the ONU of normal failure light emission, there is provided following testing mechanism according to the normal failure light emission type of difference of ONU/ONT optical module for the embodiment of the present invention：
The optical module burst disabler of fault type one, only one of which ONU, in normal luminance, but can also send normal data；
In this case, because OLT does not receive other normal ONU any information for a long time, then think that other normal ONU all go offline, other normal ONU are caused not register all, and this often luminous O J can be with normal registration, and data or control signaling are sent to OLT, therefore the SD signals of OLT optical modules are normal height certainly（Keep high level constant）.
If only one of which ONU reaches the standard grade under normal circumstances, other ONU are offline, and such as user does not have when start, power failure, and the ONU reached the standard grade intermittently opens optical module in the time slot that OLT is distributed, and the SD signals of OLT optical modules should be pulse signal.
OLT is registered according to only one of which in all ONT, and other wholes go offline, and when now OLT optical modules SD signals are often high, it may be determined that the ONU optical module failures in current registration, in normal luminance.Due to the information of ONU transmissions can be had correctly received, therefore faulted ONU can be directly determined, at this moment, faulted ONU is if turned off then other ONU just can be with normal work.
Fault type two, the burst disabler of only one of which optical module, in normal luminance, and can not send normal data, transmission is entirely mixed and disorderly noise signal；
In this case all ONU (ONU for including this optical module failure) can all go offline, and not register.And now the SD signals of OLT optical modules are normal height certainly（Keep high level constant）.
Occur after such case, although OLT may determine that malfunction occurred, but faulted ONU can not be judged at once, it now can first close all ONU, then O U are opened one by one again, detects its working condition, if some ONU is unable to normal registration, so illustrate the optical module of the ONU failure, system after the faulted ONU of closing can recover normal.
Fault type three, the burst disabler of two or more optical modules, in normal luminance（What is sent is probably normal data, it is also possible to noise signal）；
In this case OLT is unable to properly receive any ONU information, therefore all ONU (ONU for including optical module failure) can all go offline, and not register, now the SD signals of OLT optical modules are also normal height（Keep high level constant）.
Occur after such case above, OLT can not equally judge faulted ONU at once, now can also first close all ONU, then ONU is opened one by one again, detect its working condition, if some ONU is unable to normal registration, or can with normal registration but SD signals are often high, then all illustrate the optical module of the ONU failure, OLT, which says the word, closes the O J optical modules, when all ONU detections are finished, OLT can just open other normal ONU, and system recovers normal.
In technical scheme provided in an embodiment of the present invention, realize detection control from OLT to the ONU modes for sending out code, although optical module has an on/off control signal, but optical module in failure very
It is probably to be not responding to external control signal, so more a kind of feasible method is exactly to indicate that faulted ONU closes the transmission power supply of optical module, such optical module can be with normal received signal.But if the optical module receiving portion of faulted ONU also breaks down when can not receive out code that OLT is sent, in this case can be by controlling OLT optical modules to continuously open, turn off several times, ONU end can receive multiple continuous pulse signal instructions, in this, as the alternative command for closing transmission power supply.
In summary, whether OLT can be continuously high level failure judgement state according to the output signal of this sidelight module SD terminals, then by sending the detection of control instruction progress faulted ONU to ONU and carrying out Breakdown Maintenance, it is specific to safeguard that handling process is occupied the need for the setting cycle periodically started and monitored with property performance period, can also automatic cycle monitoring, it is described in detail below by taking circulatory monitoring as an example, specific handling process is as shown in figure 4, comprise the following steps：
51st, OLT detects the lasting holding time of uplink；
OLT is detected generally according to the output signal of this sidelight module SD terminals, when uplink has optical signal arrival, and the output signal of SD terminals is high level, by detecting the duration of high level, can obtain the lasting holding time of uplink.
52nd, judge to continue whether holding time exceedes given threshold, if it is, the parameter for issuing compensation delay according to the threshold value of setting by OLT continues S3 to optical network unit if it can not also change lasting holding time;Otherwise return to step S1;The given threshold is the slot range that OLT licenses to ONU upstream datas.
Compensation delay is the internal delay time of optical network unit, is set and controlled by optical line terminal.The purpose of this parameter is delay uplink, the up data of ONU is reached optical line terminal with identical phase.The arrival time of Guang Wang Network units transmission is probably due to aging or temperature are drifted about the reason for change.Therefore, adjustment compensation delay can solve this drift, but then invalid for often luminous faulted ONU.
It is of course also possible to which the parameter for not issuing compensation delay continues directly to S3, still can detect faulted ONU and be safeguarded to optical network unit.
53rd, judge that currently whether only one of which ONU is in login state, if it is continues S4;Otherwise step gland S6 is gone to;
54th, OLT determines the ONU failures, and issues closing transmission power command to the ONU；
OLT is issued after closing power command, judge whether data feedback channel is idle, if, then the ONU receiving portions are normal, and correctly perform closing power command, otherwise the ONU receiving portions also break down, closing power command can not correctly be performed, OLT can then control optical module to continuously open, turn off several times, pulse command is issued to the ONU, ONU is received after pulse signal, and SD ends export corresponding pulse detection signals simultaneously, and ONU end control device can close optical module according to the pulse signal.
55th, OLT is to return to step SI after maintenance centre's reporting fault ONU information;If periodically monitored, terminate after the completion of this step, wait next monitoring cycle.
56th, judge whether all ONU are offline, i.e., be in login state currently without any ONU, if it is continue S7;Otherwise Bu Sudden S9 are gone to;
57th, OLT detections and closing fault ONU;
58th, return to step S5 after other normal ONU is opened;
59th, the normal simultaneously Shang Gen maintenance centres of system, return to step Sudden S1;If periodically monitored, terminate after the completion of this step, wait next monitoring cycle.
As shown in figure 5, in above-mentioned steps S7, OLT is detected by following specific steps and is closed the faulty O U of institute:
S70K OLT close the control message for sending power supply to all ONU broadcast currently connected；
5702nd, judge whether uplink is idle, if going to Bu Sudden S704;Otherwise step S703 is continued;
5703rd, OLT is issued to all ONU currently connected closes the pulse signal for sending power supply by force；If all ONU receiving portion is normal, it can then receive and perform closing and send power supply message, at this moment uplink is idle, on the contrary, there is the ONU of receiving portion failure, then the ONU of the receiving portion failure must be closed by out code by force.
OLT is changed to pulse enable signal by the way that the transmission of optical module is enabled into signal, so as to control optical module to export the pulse signal.
It is actual when implementing, after step S703 can also return to step S702 reaffirm whether uplink idle.
5704th, all ONU currently connected information is obtained, and therefrom selects an ONU to be measured;
5705th, send to open to ONU to be measured and send power command and start to detect the lasting holding time of uplink；
5706th, monitor the ONU to be measured and whether take the lasting holding time of uplink more than the wealthy value of setting time, if it is delay adjustment is further compensated to abnormal optical network unit, it can be defined as normal failure light emission after compensation delay adjustment is invalid, otherwise go to step S708;
When the ONU is normal, after ONU transtation mission circuit power supply is opened, perform normal register flow path and according to the Time Slot Occupancy data feedback channel of distribution, otherwise just start lasting occupancy data feedback channel after transtation mission circuit power supply opening, therefore can determine whether to break down by monitoring the lasting holding time of ONU occupancy uplink to be measured or being further carried out compensation delay adjustment.Explanation is needed exist for, even if the ONU to be measured can not be registered, if its data feedback channel holding time is zero, then do not produce influence on uplink, the detection maintenance span of normal failure light emission is not belonging to.
It is still by detecting that the high level lasting time of optical module SD ends output signal monitors data feedback channel holding time, the time wealthy value set is equal to the ascending time slot scope that OLT is distributed as each ONU, if the ONU to be measured takes uplink according to the time slot of distribution, then closed automatically at the end of the time slot, the lasting holding time of uplink is less than the time wealthy value of setting, it is on the contrary, after the transmission power supply of the ONU to be measured is opened, persistently take uplink, when holding time exceedes the time threshold of setting, it can be determined that the ONU transmitting portions failure to be measured.
5707th, the ONU to be measured is recorded for faulted ONU;
5708th, send to close to the ONU to be measured and send power supply message；
Send power supply message to be extended by the control message or Operation and Maintenance message defined in existing EPON, or be defined according to existing protocol.
In detection process, the normal ONU detected transtation mission circuit power supply also must shut off.
5709th, judge whether to have detected all ONU to be measured, if it is continue；Otherwise Bu Sudden S8 are performed;
5710th, Bu Sudden S705 are returned after the next ONU to be measured of reselection from all ONU not detected.By above-mentioned cycle detection, OLT can detect all faulted ONUs, including transmitting portion failure but the normal ONU of receiving portion, and receive and transmitting portion all failures ONU.
During above-mentioned detection process, OLT records and reporting fault ONU information close all events
Barrier ONU has simultaneously been again turned on all normal ONU, PON is recovered normal operation.During above-mentioned monitoring and maintenance, eliminate normal failure light emission ONU, if necessary to the faulted ONU for detecting to register simultaneously, methods described of the embodiment of the present invention can be between step S705 and step S706, increase inquires about log-on message the step of whether ONU to be measured registers judged, continue step S706 monitoring uplink holding times if ONU is registered, otherwise the ONU to be measured is recorded to go to step S708 after faulted ONU, ONU to be measured, which is not registered, illustrates that the transmitting portion of the ONU to be measured completely loses function, normal signal, which can neither be sent, can not also send noise, although the use to uplink is not impacted, but still should record the faulted ONU and report maintenance centre.
As shown in fig. 6, the embodiment of the present invention also provides a kind of OLT60 structures, including optical module 61 and Service Processing Module 62, in addition to：
Breakdown Maintenance module 63, connects the optical module 61, and the uplink for monitoring the connection of optical module 61 is exceeded the malfunction of given threshold by lasting holding time, detects that failure source simultaneously carries out Breakdown Maintenance.
Breakdown Maintenance module 63 may further include：
Malfunction monitoring submodule 631, connects the optical module 61, for monitoring the malfunction and exporting fault indication signal；
Troubleshooting submodule 632, carries out failure source-end detection according to the fault indication signal and carries out Breakdown Maintenance；
Fault information reporting submodule 633, for the source of trouble detected client information to be reported into maintenance centre.Service Processing Module 62 is connected between the optical module 61 and troubleshooting submodule 632, for receiving the dependent failure process instruction of the generation of troubleshooting submodule 632 and being sent by optical module 61；Optical module 61 includes SD terminals, and for exporting the detection signal for whether having optical signal to reach, the malfunction monitoring submodule 631 connects the SD terminals and the malfunction according to the monitor signal output of the SD terminals；
Troubleshooting submodule 632 is while connect the transmission enable signal Tx of the optical module 61-and disable (transmission is enabled/forbids）Receiving terminal, by Tx-disable receiving terminals input pulse enable/disable signal to optical module 61, can control the output pulse signal of optical module 61.
Breakdown Maintenance module 63 can be separately provided, and can also be merged with OLT existing control module and be set.As shown in fig. 7, the embodiment of the present invention also provides a kind of ONU70 of the cooperation OLT60 structures, including optical module 71 and Service Processing Module 72, in addition to：
Power module 73 is sent, the optical module 71 is connected, for providing working power to the transtation mission circuit of the optical module 71；
Energy supply control module 74 is sent, the transmission power module 73 is connected, for being switched on or off the transmission power module 73 according to external power source control instruction;
Power module 75 is received, the optical module 71 is connected, for providing receiving circuit working power to the optical module 71；
Service Processing Module 72 is connected between the optical module 71 and transmission energy supply control module 74, for receiving the external power source control instruction and being transmitted to the transmission energy supply control module 74;
The Service Processing Module 72 includes：Instruction identification submodule 721, for recognizing the external power source control instruction and being transmitted to the energy supply control module.
Sending energy supply control module 74 can specifically include：
Analyzing sub-module 741 is instructed, the instruction identification submodule 721 is connected, for parsing the external power source control instruction；
Command executing sub module 742, is connected to the instruction analyzing sub-module 741 and sends between power module 73, generates corresponding control signal for just blunt according to analysis result and exports to sending power module 73.
Optical module 71 includes SD terminals, for exporting the detection signal for whether having optical signal to reach；Sending energy supply control module 74 also includes：Pulse signal monitors submodule 743, connect between the SD terminals and command executing sub module 742, and when the detection signal of the SD ends output signal is the pulse signal of setting, indicate that the command executing sub module 742 closes the transmission power module 73.
In above-mentioned ONU, the transmission power supply and reception power supply of optical module are provided separately, and sending the controlled module control of power supply can open and close.When there are abnormal conditions, OLT can issue closing optical mode block instruction to some ONU or all ONU, ONU control modules receive the transmission power supply that optical module is closed after the instruction, specific out code passes through existing control message, OAM (Operation And Maintenance, Operation and Maintenance）Message extend, or according to existing protocol it is self-defined wait carry, specifically extend and definition mode
Know for those skilled in the art, repeat no more here.
Sending energy supply control module can be separately provided, it can also merge with OLT existing control module and set the OLT and ONU above-mentioned by supporting the use the embodiment of the present invention, a set of Breakdown Maintenance system is formed in PON, it is possible to achieve the detection of normal failure light emission and maintenance of PON.
Technical scheme described in the embodiment of the present invention realizes the testing mechanism on cylinder list, OLT and uncomplicated, it is easy to can be achieved with, and ONU is upper need to only to be separated the power supply circuit of optical module, and/closing control is individually opened to sending power supply.Compared with existing passive optical network, cost does not increase substantially, realize the detection and isolation of faulted ONU, substantially increase the reliability and stability of PON system, while also improving the maintainability of ONU terminals.
In EPON maintaining method described in the embodiment of the present invention, monitor whether occur normal failure light emission by optical line unit side, and carry out the detection and maintenance of failure optical network unit, malfunction monitoring and testing mechanism realize that cylinder is singly reliable, realize isolation and the Breakdown Maintenance of normal failure light emission optical network unit；Further, methods described of the embodiment of the present invention is by inquiring about log-on message, the failure optical network unit that can not be registered can be detected simultaneously, further increase the reliability and stability of EPON, the monitoring of light fixed cycle property performance period is also improved simultaneously, it can also realize that automatic cycle is monitored, the need for facilitating different application scene；To realize above-mentioned technical proposal, the embodiment of the present invention, which is provided, can carry out the optical line terminal of malfunction monitoring and Breakdown Maintenance, and matching used optical network unit, not increase substantially in cost.Depart from the spirit and scope of the embodiment of the present invention.So, if these modifications and variations of the embodiment of the present invention belong within the scope of the claims in the present invention and its equivalent technologies, then the present invention is also intended to comprising including these changes and modification.
Claims (18)
- Claim1st, a kind of maintaining method of EPON, it is characterised in that including：Optical line terminal monitors the lasting holding time of uplink, and optical line terminal indicates that the failure optical network unit closes transtation mission circuit power supply when monitoring the persistently occupancy.2nd, the method as described in claim 1, it is characterized in that, the detection failure Guang Wang Network single units, judge whether the compensation delay by adjusting the optical network unit can change the lasting holding time to the uplink again, if it is it is normal optical network unit, is otherwise failure optical network unit.3rd, the method as described in claim 1, it is characterised in that the detection persistently takes the failure optical network unit of the uplink, and indicate that the method for the failure optical network unit closing transtation mission circuit power supply is specifically included：Judge the current optical network unit for whether only existing a login state, if it is record the optical network unit to be measured for failure Guang Wang Network units, indicate that the failure optical network unit closes transtation mission circuit power supply；OtherwiseJudge whether all optical network units currently connected are all offline, and each optical network unit currently connected is if it is detected respectively and failure optical network unit therein is determined, indicate that the faulty optical network unit of institute closes transtation mission circuit power supply；Otherwise Wang Network normal operations are confirmed.4th, method as claimed in claim 3, it is characterized in that, it is described to detect each optical network unit currently connected respectively and determine failure light net Network units therein, indicate that the method for institute's faulty optical network unit closing transtation mission circuit power supply is specifically included：The control message of transtation mission circuit power supply is closed in broadcast, and judges whether the uplink is idle, if it is selects an optical network unit to be measured one by one from all optical network units currently connected；Otherwise sent to each optical network unit currently connected for indicating that the pulse signal for closing transtation mission circuit power supply selects an optical network unit to be measured one by one from all optical network units currently connected again after instructing；The control message for opening transtation mission circuit power supply is first sent to each optical network unit to be measured, and is judged.^ ^ l J1JL, ^ mouthfuls of fruits are shellfishes] record treats that light-metering net Network units are failure light net Network units；Otherwise the control message for closing transtation mission circuit power supply is sent to optical network unit to be measured；Until having detected after all optical network units, the control message for opening transtation mission circuit power supply is sent to each non-faulting optical network unit.5th, method as claimed in claim 4, it is characterised in that methods described also includes：When treating light-meteringIt is that the control message for closing transtation mission circuit power supply is then sent to optical network unit to be measured；Otherwise optical network unit to be measured is re-recorded for failure optical network unit. .6th, the method as described in claim 1,2,4 or 5, it is characterised in that described given threshold refers to the scope that optical line terminal licenses to the ascending time slot of optical network unit.7th, the method as described in claim 4 or 5, it is characterized in that, it is described each optical network unit to be measured first to be sent after the control message for opening transtation mission circuit power supply, also inquire about whether optical network unit to be measured notes the noisy value of setting, otherwise record the optical network unit to be measured for failure optical network unit.8th, method as claimed in claim 4, it is characterised in that the optical line terminal controls optical module to export the pulse signal by sending enable/disable signal to optical module input pulse.9th, method as claimed in claim 4, it is characterised in that methods described also includes：The step of optical line terminal is to maintenance centre's report network normal operation or failure optical network unit information.10th, a kind of optical network unit, including optical module, it is characterised in that the optical network unit also includes：Power module is sent, for providing working power to the transtation mission circuit of the optical module；Energy supply control module is sent, for being switched on or off the transmission power module according to external power source control instruction.11st, optical network unit as claimed in claim 10, it is characterised in that the Guang Wang Network units also include： Service Processing Module, is connected between the optical module and energy supply control module, for receiving the external power source control instruction and being transmitted to the transmission energy supply control module；Power module is received, the optical module is connected, for providing receiving circuit working power to the optical module.12nd, optical network unit as claimed in claim 11, it is characterised in that the Service Processing Module includes：Instruction identification submodule, for recognizing the external power source control instruction and being transmitted to the transmission energy supply control module.13rd, optical network unit as claimed in claim 12, it is characterised in that the transmission energy supply control module includes：Analyzing sub-module is instructed, the instruction identification submodule is connected, for parsing the external power source control instruction；Command executing sub module, is connected between the instruction analyzing sub-module and reception power module, and transmission power module is given for generating corresponding control signal according to analysis result and exporting.14th, optical network unit as claimed in claim 13, it is characterised in thatThe optical module includes signal detection SD terminals, for exporting the detection signal for whether having optical signal to reach；The transmission energy supply control module also includes：Pulse signal monitors submodule, when the detection signal of the SD ends output signal is the pulse signal of setting, indicates that the command executing sub module closes the transmission power module.15th, a kind of optical line terminal, including optical module, it is characterised in that the optical line terminal also includes：Breakdown Maintenance module, the uplink for monitoring the optical module connection continues the malfunction that holding time exceedes setting n values, detects failure source and carries out Breakdown Maintenance.16th, optical line terminal as claimed in claim 15, it is characterised in that the Breakdown Maintenance module includes：Malfunction monitoring submodule, for monitoring the malfunction of the optical module and exporting fault indication signal； Troubleshooting submodule, carries out failure source-end detection according to the fault indication signal and carries out Breakdown Maintenance；Fault information reporting submodule, for the source of trouble detected client information to be reported into maintenance centre.17th, optical line terminal as claimed in claim 16, it is characterised in that the optical line terminal also includes：Service Processing Module, for receiving the dependent failure process instruction of troubleshooting submodule generation and being sent by optical module.18th, optical line terminal as claimed in claim 16, it is characterised in that the optical module includes：SD terminals, connect the malfunction monitoring submodule, the detection signal for exporting optical signal arrival；Enable/disable signal terminals, connects the troubleshooting submodule, receives pulse enable/disable signal of troubleshooting submodule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200780000412.3A CN101317349B (en) | 2006-05-18 | 2007-04-16 | Passive optical network maintenance method, optical network unit and optical line terminal |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610078267.8 | 2006-05-18 | ||
| CNB2006100782678A CN100536381C (en) | 2005-12-23 | 2006-05-18 | Passive light network maintenance method and light network unit and light circuit terminal |
| PCT/CN2007/001232 WO2007134520A1 (en) | 2006-05-18 | 2007-04-16 | A method for maintaining the passive optical network, an optical network element and an optical line terminal |
| CN200780000412.3A CN101317349B (en) | 2006-05-18 | 2007-04-16 | Passive optical network maintenance method, optical network unit and optical line terminal |
Publications (2)
| Publication Number | Publication Date |
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| CN101317349A true CN101317349A (en) | 2008-12-03 |
| CN101317349B CN101317349B (en) | 2011-07-06 |
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| CN200780000412.3A Active CN101317349B (en) | 2006-05-18 | 2007-04-16 | Passive optical network maintenance method, optical network unit and optical line terminal |
Country Status (2)
| Country | Link |
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| CN (1) | CN101317349B (en) |
| WO (1) | WO2007134520A1 (en) |
Cited By (4)
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| WO2011095022A1 (en) * | 2010-02-08 | 2011-08-11 | 中兴通讯股份有限公司 | Method and system for correctly locating optical network unit glowing abnormally |
| CN103840976A (en) * | 2014-02-28 | 2014-06-04 | 华为技术有限公司 | Communication method, optical module and network device |
| CN105472482A (en) * | 2014-08-18 | 2016-04-06 | 中兴通讯股份有限公司 | Method of recognizing state of optical module in ONU (Optical Network Unit) and ONU |
| CN114978895A (en) * | 2022-07-25 | 2022-08-30 | 深圳市亿联无限科技有限公司 | Starting method, system, equipment and computer readable storage medium |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100536381C (en) | 2005-12-23 | 2009-09-02 | 华为技术有限公司 | Passive light network maintenance method and light network unit and light circuit terminal |
| CN115021809B (en) * | 2022-06-02 | 2024-04-16 | 索尔思光电（成都）有限公司 | Method and system for accelerating locking of optical module signals |
| CN116436522B (en) * | 2023-06-14 | 2023-08-15 | 国网天津市电力公司蓟州供电分公司 | Fault positioning device and positioning method for power communication access network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH08251102A (en) * | 1995-03-08 | 1996-09-27 | Fujitsu Ltd | Optical transmission device |
| JPH10262000A (en) * | 1997-03-19 | 1998-09-29 | Fujitsu Ltd | Failure restoring method and device in passive optical network |
| US6650839B1 (en) * | 2000-05-23 | 2003-11-18 | Quantum Bridge Communications, Inc. | Method and apparatus for optical media access protection in a passive optical network |
| CN1140083C (en) * | 2000-08-26 | 2004-02-25 | 深圳市中兴通讯股份有限公司 | Passive light network transmission system and its delay control method |
| CN100536381C (en) * | 2005-12-23 | 2009-09-02 | 华为技术有限公司 | Passive light network maintenance method and light network unit and light circuit terminal |
-
2007
- 2007-04-16 CN CN200780000412.3A patent/CN101317349B/en active Active
- 2007-04-16 WO PCT/CN2007/001232 patent/WO2007134520A1/en active Application Filing
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2011095022A1 (en) * | 2010-02-08 | 2011-08-11 | 中兴通讯股份有限公司 | Method and system for correctly locating optical network unit glowing abnormally |
| CN103840976A (en) * | 2014-02-28 | 2014-06-04 | 华为技术有限公司 | Communication method, optical module and network device |
| CN103840976B (en) * | 2014-02-28 | 2017-06-20 | 华为技术有限公司 | Communication means, light device and the network equipment |
| US10075395B2 (en) | 2014-02-28 | 2018-09-11 | Huawei Technologies Co., Ltd. | Communication method, optical module, and network device |
| CN105472482A (en) * | 2014-08-18 | 2016-04-06 | 中兴通讯股份有限公司 | Method of recognizing state of optical module in ONU (Optical Network Unit) and 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 |
| CN114978895A (en) * | 2022-07-25 | 2022-08-30 | 深圳市亿联无限科技有限公司 | Starting method, system, equipment and computer readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007134520A1 (en) | 2007-11-29 |
| CN101317349B (en) | 2011-07-06 |
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