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WO2010025668A1 - Procédé, dispositif et système de traitement hors-tension d'unité de réseau optique - Google Patents

Procédé, dispositif et système de traitement hors-tension d'unité de réseau optique Download PDF

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Publication number
WO2010025668A1
WO2010025668A1 PCT/CN2009/073693 CN2009073693W WO2010025668A1 WO 2010025668 A1 WO2010025668 A1 WO 2010025668A1 CN 2009073693 W CN2009073693 W CN 2009073693W WO 2010025668 A1 WO2010025668 A1 WO 2010025668A1
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WIPO (PCT)
Prior art keywords
power
optical network
network unit
down maintenance
maintenance information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2009/073693
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English (en)
Chinese (zh)
Inventor
杨素林
殷锦蓉
弗兰克·埃芬博格
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
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Publication of WO2010025668A1 publication Critical patent/WO2010025668A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H04B10/0773—Network aspects, e.g. central monitoring of transmission parameters
    • 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
    • H04B10/27—Arrangements for networking
    • H04B10/272—Star-type networks or tree-type networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/14—Monitoring arrangements

Definitions

  • the present invention relates to a network technology in the field of communications, and in particular to a method, device and system for power-down processing of an optical network unit. Background technique
  • the universal Passive Optical Network (PON) technology is a point-to-multipoint optical access technology.
  • the PON network is composed of an Optical Line Terminal (OLT), an Optical Distribution Network (ODN), and an Optical Network Unit (ONU).
  • OLT provides a network side interface for the ⁇ system and connects one or more ODNs.
  • the ODN is a passive optical distribution network for connecting.
  • the optical line terminal OLT and the optical network unit ONU or the optical network terminal ⁇ are used for distributing or multiplexing data signals between the OLT and the ONU or the UI; the ONU or the UI provides a user-side interface to the ODN.
  • the ONU or ⁇ is collectively referred to as the optical network unit ONU.
  • the OLT When the ODN is faulty or the ONU is powered off, the OLT will not receive the upstream optical signal from the corresponding ONU.
  • the PON standard stipulates that the OLT cannot receive the ONU in the time slot allocated to the ONU multiple times in succession. When the optical signal is generated, the OLT generates an ONU signal loss alarm message such as a LOSi alarm to indicate that the ONU is dropped. At the same time, the PON standard also stipulates that if the OLT receives an indication of the power failure of the ONU (for example
  • the OLT can ignore all subsequent alarms of the ONU. That is, although the ONU power failure or the ODN failure eventually has the same result (the OLT does not receive the upstream optical signal of the ONU), the ONU power failure condition is substantially different from the ODN failure. Therefore, when the ONU is powered off, the OLT does not perform the LOSi alarm. , only give the power failure notification, this can avoid the need to send engineers to repair when the ONU is powered off, thus reducing maintenance costs. However, at present, some ONUs do not support the power-down indication function.
  • the OLT When these ONUs lose power, the OLT will not receive the power-down indication, and the OLT will issue an ONU signal loss alarm, which will be misidentified as an ODN fault or cannot be determined. For power failure events, unnecessary maintenance costs are incurred.
  • some ONUs also have a power-down indication function, due to the processing capability of the OLT and the limitation of the ONU's own power-down maintenance capability (ONU uploading requires OLT authorization), when multiple ONUs are powered down at the same time, perhaps due to insufficient ONU capability or The OLT cannot perform authorization in time, causing the ONU's power-down indication to fail to be uploaded to the OLT in time, causing the OLT to misjudge the ODN failure, which in turn leads to unnecessary maintenance costs.
  • the OLT when the OLT cannot receive the optical signal of the ONU in the time slot allocated to the ONU multiple times, the OLT generates an alarm message such as an LOSi alarm to indicate that the ONU is offline.
  • the LOSi alarm may be caused by the ONU power failure, or it may be caused by the fiber failure of the ONU. If the ONU is powered off, you do not need to send a maintenance engineer for maintenance. If the optical fiber connected to the ONU is faulty, you need to send a maintenance engineer for maintenance.
  • the PON standard stipulates that the ONU needs to report its power-down event to the OLT through the Dying Gasp message when the power is turned off, so as to avoid dispatching engineers for maintenance when the ONU is powered off.
  • the inventors have found that the prior art has at least the following problems: When the ONU's power-down maintenance capability is unknown or the OLT processing capability is limited, the OLT cannot correctly determine whether the ONU is powered off or the ODN is faulty. The ONU performs timely and accurate power-down processing. Summary of the invention
  • the main purpose of the embodiments of the present invention is to provide a method, device, and system for power-down processing of an optical network unit, which are used to obtain ONU power-down maintenance information, and perform a drop event of the ONU according to the power-down maintenance information. Processing and diagnostics provide more accurate input for troubleshooting.
  • a method for power-down processing of an optical network unit includes: acquiring power-down maintenance information of an optical network unit, where the power-down maintenance information includes: a power-down maintenance time and/or a power-down maintenance parameter; When the network unit is offline, the power-down processing is performed on the optical network unit according to the power-down maintenance information of the optical network unit.
  • a method for obtaining an optical network unit power-down maintenance information includes: receiving a request for obtaining an optical network unit power-down maintenance information sent by an optical line terminal; and sending, according to the request, a sending optical network unit power-down maintaining information to The optical line termination, wherein the power down maintenance information comprises: a power down maintenance time and/or a power down maintenance parameter.
  • An optical line terminal includes: a first storage module and a power-down processing module; the first storage module is configured to store power-down maintenance information of the optical network unit, where the power-down maintenance information includes: a power-down maintenance time and The power-down processing module is configured to process the optical network unit according to the power-off maintenance time of the optical network unit when the optical network unit is disconnected.
  • An optical network unit includes: a second storage module and a power-down maintenance information reporting module; the second storage module is configured to store power-down maintenance information of the optical network unit; and the power-down maintenance information includes: And the power-down maintenance information reporting module is configured to receive the power-off maintenance information request of the optical network unit sent by the optical line terminal, and remove the optical network unit according to the request The electrical maintenance information is sent to the optical line terminal.
  • a passive optical network system comprising: an optical line terminal, an optical network unit, and an optical distribution network; the optical line terminal is configured to store power-down maintenance information of the optical network unit, when the optical network unit is disconnected, according to the optical network
  • the power-down maintenance time of the unit is processed by the optical network unit;
  • the power-down maintenance information includes: a power-down maintenance time and/or a power-down maintenance parameter;
  • the optical network unit is configured to provide power-down maintenance information of the optical network unit, and send the power-down maintenance information of the optical network unit to the optical line terminal.
  • the optical distribution network is configured to connect an optical line terminal and at least one optical network unit, and is configured to distribute or multiplex data signals between the optical line terminal and the at least one optical network unit.
  • the embodiment of the present invention obtains the power-down maintenance information of the optical network unit.
  • the power-down processing is performed on the optical network unit according to the power-down maintenance information of the optical network unit, which solves the prior art.
  • the optical network unit is powered off or the optical distribution network is faulty, the optical line terminal cannot correctly determine the power failure of the optical network unit, ensuring that the optical network unit completes the reporting of the power failure indication during the power failure maintenance time, and improves the reporting of the optical network unit.
  • the stability of the power-down indication provides a more accurate input for troubleshooting.
  • FIG. 1 is a structural diagram of a passive optical network system in the prior art
  • 2 is a flowchart of a method for power-down processing of an optical network unit according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method for acquiring power-down maintenance information of an optical network unit according to an embodiment of the present invention
  • FIG. 4 is a flow chart of a method for reporting a power failure indication by an optical network unit according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of an optical line terminal according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of an optical network unit according to an embodiment of the present invention
  • FIG. 7 is an optical network unit according to an embodiment of the present invention
  • Schematic diagram of the structure of the power-down maintenance time extension module
  • FIG. 8 is a schematic structural diagram of a passive optical network system according to an embodiment of the present invention. detailed description
  • Embodiments of the present invention provide a method for ONU power down processing. The details will be described in detail below with reference to the accompanying drawings.
  • FIG. 2 is a flowchart of a method for power-down processing of an optical network unit according to an embodiment of the present invention.
  • a flowchart of a method for power-off processing of an ONU according to an embodiment of the present invention is specifically described below with reference to FIG.
  • the optical network unit ONU or the optical network terminal ONT is collectively referred to as an optical network unit.
  • the optical network unit ONU is described as an example, but is not limited to the ONU, and is also applicable to the ONT.
  • An OLT device (hereinafter referred to as ONU) can be connected to multiple ONUs.
  • step S200 the OLT acquires ONU power down maintenance information;
  • the OLT requests to obtain the power-off maintenance information of the ONU by sending a request for the ONU to power down the maintenance information to the ONU.
  • the OLT sends a request for the ONU power down maintenance information to the network side device, requesting to obtain the power down maintenance information of the ONU.
  • the power-down maintenance information includes: a power-down maintenance time and/or a power-down maintenance parameter, etc., and the power-down maintenance time is a time during which the ONU can maintain communication with the OLT after the main power is cut off.
  • the power-down maintenance parameter may include: one or more of the capacitance capacity C of the power-down maintenance module, the voltage difference dV between the capacitors, and the current I during the capacitor discharge, and may also include other power-related parameters.
  • FIG. 3 is a flowchart of a method for acquiring power-down maintenance information of an optical network unit according to an embodiment of the present invention. Referring to FIG. 3 in detail, a method for an OLT to obtain an ONU power-down maintenance information by sending an ONU power-down maintenance information request to an ONU is described in detail below. .
  • step S300 the OLT sends a request for acquiring ONU power down maintenance information to the ONU, requesting acquisition of ONU power down maintenance information.
  • the request sent by the OLT may be sent to the specified ONU through the unicast message, or may be sent to all the ONUs through the broadcast message; the OLT may send a request for obtaining the ONU power failure maintenance information to the ONU through a specific message format, the specific The message format includes any combination of one or more of an embedded operation management and maintenance (Embedded OAM message), a physical layer operation management and maintenance PLOAM message, and an optical network terminal management control interface OMCI message.
  • Embedded OAM message embedded operation management and maintenance
  • PLOAM physical layer operation management and maintenance
  • OMCI message optical network terminal management control interface
  • step S302 the ONU reports the power failure maintenance information to the OLT.
  • the ONU can report the power-down maintenance information in a specific message format.
  • the ONU sends the power-down maintenance information to the physical layer operation management and maintenance PLOAM message or the optical network terminal management control interface OMCI message, and reports it to the OLT.
  • the power-down maintenance information is carried in the optical network terminal management control interface OMCI message, and the implementation method thereof is specifically described:
  • the ONU stores the power-down maintenance information in a specific attribute of the ONT-G ME, and the specific attribute is read-only. Or a readable and writable attribute, the specific attributes of the ONT-G ME are described as follows:
  • ONT survival time This attribute indicates the minimum guaranteed time in milliseconds between the loss of external power and the silence of the ONT. This does not include survival time attributable to a backup battery. The value zero implies that the actual time is not known. (R) (optional) (1 byte)
  • the ONU may report the attribute value to the OLT in the optical network terminal management control interface OMCI message.
  • the ONU can actively report the power-down maintenance information and the power-down indication to the OLT through a specific message format when the power is off.
  • the ONU carries the power-down maintenance information and the power-down indication on the physical layer to manage and maintain the PLOAM message or light.
  • the network terminal management control interface OMCI message is reported to the OLT.
  • the power-down maintenance time may be pre-configured in the ONU, or may be the power-down maintenance time that the ONU dynamically calculates according to the power-down maintenance parameter, and the power-down maintenance parameter may be Pre-configured in the ONU, it can also be obtained dynamically.
  • the lowest voltage value on the capacitor that the ONU system normally supplies is 5 V
  • the discharge current of the rear capacitor is calculated by the formula to calculate the power-down maintenance time of the ONU.
  • the power-down maintenance time and/or power-down maintenance parameter pre-configured in the ONU can be a specific The value is either an interval value or a pre-agreed value of the OLT or ONU to indicate that the ONU does not support the power down indication function (such as dying gasp).
  • the OLT needs to calculate the power-down maintenance time according to the power-down maintenance parameter.
  • the specific calculation method is the same as the method used by the ONU to calculate the power-down maintenance time, and details are not described herein again.
  • Step S300 and step S302 do not have the requirement of executing the sequence.
  • the ONU may actively report the ONU power-down maintenance information, or may receive a request for acquiring the ONU power-down maintenance information sent by the OLT. After that, the ONU is powered down to maintain the information for reporting. When the ONU actively reports, step S300 may not be performed.
  • the foregoing describes in detail the method for the OLT to obtain the power-down maintenance information from the ONU.
  • the OLT can also obtain the ONU power-down maintenance information from the service-side device.
  • the service-side device can power down the ONU to maintain the information and the ONU identifier, or drop the ONU.
  • the electrical maintenance information is associated with the model of the ONU and stored in the memory.
  • the ONU identifier includes: any combination of one or more of the serial number SN of the ONU, the password password of the ONU, or the MAC address of the ONU.
  • the service-side device can search for the power-down maintenance information of the corresponding ONU according to the identifier or model of the ONU and send it to the OLT.
  • the OLT performs the power-down maintenance time calculation according to the power-down maintenance parameter.
  • the specific method is the same as the step S300, and details are not described herein again.
  • the power-down maintenance information may be pre-configured in the OLT. At this time, if the pre-configured power-down maintenance information is the power-down maintenance parameter, the OLT will perform the power-down maintenance time calculation according to the power-down maintenance parameter. Same as step S302, and details are not described herein again. If pre-matched The power-down maintenance information is set to the power-down maintenance time, and the OLT does not need to perform step S300.
  • the electrical maintenance information is processed and/or diagnosed. Specifically, if the OLT does not receive the power-off indication of the ONU when the ONU is offline, it determines whether the ONU is dropped due to the ONU power-off according to the ONU power-down maintenance time, and generates a judgment result.
  • the judgment result may be expressed in the form of a probability. For example, if the ONU power-down maintenance time is long (for example, greater than Is), the ONU is dropped due to the ONU power failure probability of 0%; if the ONU power-down maintenance time If it is short (such as less than lms), the ONU is dropped because the probability of the ONU being powered down is 50%.
  • Some ONUs can only maintain a short power-down hold time of 4 ⁇ due to implementation reasons or other reasons. If the power-down indication cannot be sent during the power-down maintenance time, it may cause the OLT to occur during the ONU power-down processing. Misjudgment. There are three ways to improve the probability that the ONU will report a power-down indication, thus providing more accurate input for troubleshooting. should.
  • the OLT determines whether the ONU power failure indication request number exceeds the system processing capability. If the system processing capability is exceeded, the OLT determines the priority of each ONU power failure indication request according to the ONU power failure maintenance time. Level, response processing based on priority.
  • the ONU power-down indication request is that when the ONU is powered off, the ONU is instructed to be powered down, and the power-off condition of the ONU is reported to the OLT; and the ONU power-down maintenance time is determined to ensure that all the ONUs can be powered down.
  • the report of the power failure indication is completed within the maintenance time. For example, ONU The shorter the power-down maintenance time, the higher the priority, and the OLT responds preferentially.
  • the ONU can complete the reporting of the power-down indication within the power-down maintenance time, improve the stability of the power-down indication when the ONU is powered down, and thus provide more accurate input for fault diagnosis.
  • Method 2 When the ONU is powered off, the ONU power-down indication is reported by a specific bit in the uplink frame. For example, the fourth bit of the Ind Field field in the uplink frame header is used to perform the power-down event indication. When the bit is 0. The message indicates that the message does not carry the ONU power-down indication. When the bit is 1, the message carries the ONU power-down indication. The method is further described below in conjunction with FIG. 4:
  • FIG. 4 is a flow chart of a method for powering down a power failure on an optical network unit according to an embodiment of the present invention.
  • step S400 the ONU main power source is turned off.
  • the main power failure may be caused by the user turning off the ONU, or it may be caused by the external power interruption of the ONU.
  • the ONU receives the bandwidth allocated by the OLT.
  • the bandwidth may be allocated by the OLT to the ONU to transmit communication data, or may be allocated by the OLT to the ONU to transmit maintenance management information;
  • step S404 the ONU reports a power down indication.
  • the ONU can set a specific bit of the uplink header to a specific value to indicate that the ONU is powered down.
  • the ONU reports the ONU power down indication by using the bandwidth allocated by the OLT in step S402. There is no sequential execution sequence between step S400 and step S402, and step S402 can be performed before step S400.
  • the method can reduce the number of interactions between the ONU and the OLT when reporting the power failure indication, speed up the ONU reporting the power failure indication speed, and improve the stability of the power failure indication when the ONU is powered down. Provides more accurate input for troubleshooting.
  • Method 3 When the ONU is powered off, the ONU selects the circuit to continue to operate according to its power-down maintenance capability, and reports the power-down indication to the OLT.
  • the power-down indication circuit can be cut off; if the ONU power-down maintenance capability is strong, the power-off indication circuit can be retained except the report power-down indication circuit.
  • Other core circuits than others. For example, the capacity of the ONU power-down capacitor can only ensure that the ONU reports the power-down indication circuit to complete the power-down indication, and the ONU can cut off all circuits except the power-down indication circuit.
  • the ONU power-off maintenance time is extended by cutting off the unimportant circuit, thereby ensuring the normal operation of the power-down indication circuit, and improving the stability of the power-down indication when the ONU is powered down, and further More accurate input can be provided for troubleshooting.
  • FIG. 5 is a schematic structural diagram of an optical line terminal according to an embodiment of the present invention.
  • An optical line terminal OLT 50 may include: a first storage module 508 and a power down processing module 506.
  • the first storage module 508 is configured to store a power down maintenance time of the ONU.
  • the power-down maintenance time may be pre-configured in the OLT 50, or may be obtained by the OLT 50 sending an ONU power-down maintenance information request to the ONU or the service-side device; or the OLT 50 may send the ONU power-down maintenance information to the ONU or the service-side device. After obtaining the ONU power-down maintenance parameter, it is obtained according to the ONU power-down maintenance parameter calculation.
  • the power-down processing module 506 is configured to process the optical network unit according to the power-off maintenance time of the optical network unit stored by the first storage module 508 when the optical network unit is offline.
  • the OLT 50 further includes a power-down maintenance information acquisition module 502 when requesting the acquisition of the ONU power-down maintenance time:
  • the power-down maintenance information acquisition module 502 is configured to send an ONU power-down maintenance information request to the ONU or the service-side device, and receive the ONU power-down maintenance information sent by the ONU or the service-side device, and power-off the ONU to maintain the information storage.
  • the power down maintenance information is a power down maintenance time.
  • the OLT 50 further includes a power down maintenance information acquisition module 502 and a power down maintenance time calculation module 504 when the ONU power down maintenance parameter is obtained.
  • the power-down maintenance information acquisition module 502 is configured to send an ONU power-down maintenance information request to the ONU or the service-side device, and receive the ONU power-down maintenance information sent by the ONU or the service-side device.
  • the power down maintenance information is a power down maintenance time.
  • the power-down maintenance time calculation module 504 is configured to calculate an ONU power-down maintenance time according to the ONU power-down maintenance parameter acquired by the OLT 50, and store the ONU power-down maintenance time in the first storage module 508.
  • the power down processing module 506 includes, but is not limited to, a group of any one or more of the following processes
  • Diagnosis specifically: If
  • the OLT 50 does not receive the power-off indication of the ONU. Based on the ONU power-down maintenance time, it is determined whether the ONU is dropped due to the ONU power failure, and the judgment result is generated.
  • the judgment result may be expressed in the form of probability. For example, if the ONU is powered down for a long time (eg, greater than Is), the ONU is dropped because the ONU is powered down. The probability is 0%. If the ONU is powered down for a short time (eg, less than 1 ms), the ONU is dropped.
  • the probability that the ONU is powered down is 50%; when a large number of ONUs Should, for example, the ONU with a short power-off hold time responds preferentially to its power-down indication request to ensure that all ONUs can complete the power-down indication during the power-down maintenance time.
  • FIG. 6 is a schematic structural diagram of an optical network unit according to an embodiment of the present invention.
  • An optical network unit 60 may include: a second storage module 604 and a power failure maintenance information reporting module 602.
  • the second storage module 604 is configured to store power-down maintenance information of the ONU.
  • the power-down maintenance information includes: a power-down maintenance time and/or a power-down maintenance parameter, etc., and the power-down maintenance time is a time during which the ONU can maintain communication with the OLT after the main power is cut off.
  • the power-down maintenance parameter may include: a power-down maintaining module capacitance capacity C, a voltage difference dV between the capacitors, and a current I during the capacitor discharge.
  • the power-down maintenance time may be pre-configured in the ONU, or may be obtained by the ONU according to the ONU power-down maintenance parameter dynamic calculation.
  • the power-down maintenance information reporting module 602 is configured to receive an ONU power-down maintenance information request of the OLT and send the ONU power-down maintenance information to the OLT.
  • the ONU When the ONU dynamically calculates the ONU power-down maintenance time according to the power-down maintenance parameter, the ONU further includes a power-down maintenance time calculation module 606, configured to calculate the ONU power-down maintenance time according to the ONU power-down maintenance parameter and store it in the first Two storage modules 604.
  • the ONU's power-down maintenance time is calculated by the formula.
  • the ONU further includes a power-down maintenance time extension module 608, which is used to extend the time when the ONU continues to work when the power is off. To ensure that the ONU can accurately report the power-down indication to the OLT when the power is off.
  • FIG. 7 is a schematic structural diagram of a power-down maintenance time extension module in an optical network unit according to an embodiment of the present invention.
  • the power-down maintenance time extension module 608 is described in detail below with reference to FIG. 7, and the power-down maintenance time extension module 608 is further described. Includes:
  • the main power module 702 is configured to supply power when the ONU is working normally;
  • the power-down maintenance module 704 is configured to supply power to the core circuit 708 when the main power source is cut off; the main power source is cut off, including but not limited to manually turning off the ONU, unplugging the ONU external power source, and the ONU external power failure;
  • the core circuit 708 is configured to: when the ONU is powered off, report the ONU power failure indication to the OLT; and the power control module 706 is configured to: after the main power in the main power module 702 is cut off, start the power failure maintenance module 704, at least The core circuit 708 is powered to ensure that the ONU reports the ONU power down indication during the power down maintenance period.
  • FIG. 8 is a schematic structural diagram of a passive optical network system according to an embodiment of the present invention.
  • a passive optical network system includes: an optical line terminal 50, an optical network unit 60, and an optical distribution network 80.
  • the optical line terminal 50 is configured to store the power failure maintenance information of the optical network unit 60.
  • the power-down maintenance information includes: a power-down maintenance time and/or a power-down maintenance parameter; the optical network unit 60 is configured to provide power-down maintenance information of the optical network unit 60, and the optical network unit 60
  • the power down maintenance information is transmitted to the optical line terminal 50.
  • the optical distribution network 80 is configured to connect the optical line terminal 50 and the at least one optical network unit 60 and to distribute or multiplex data signals between the optical line terminal 50 and the at least one optical network unit 60.
  • the optical line terminal 50 specifically includes: a first storage module 508 and a power-down processing module.
  • the first storage module 508 is configured to store power-down maintenance information of the optical network unit 60, where the power-down maintenance information includes: a power-down maintenance time and/or a power-down maintenance parameter; When the optical network unit 60 is disconnected, the optical network unit 60 is processed according to the power down maintenance time of the optical network unit 60.
  • the OLT When the OLT requests to obtain the ONU power-down maintenance time by sending an ONU power-down maintenance information request to the ONU or the service-side device, the OLT further includes a power-down maintenance information acquiring module 502, configured to send the ONU power-off to the ONU or the service-side device. And maintaining the information request, and receiving the ONU power-down maintenance information sent by the ONU or the service-side device, and storing the ONU power-down maintenance information in the first storage module 508, wherein the power-down maintenance information is a power-down maintenance time.
  • a power-down maintenance information acquiring module 502 configured to send the ONU power-off to the ONU or the service-side device. And maintaining the information request, and receiving the ONU power-down maintenance information sent by the ONU or the service-side device, and storing the ONU power-down maintenance information in the first storage module 508, wherein the power-down maintenance information is a power-down maintenance time.
  • the OLT When the OLT requests to obtain the power-down maintenance parameter by sending an ONU power-down maintenance information request to the ONU or the service-side device, the OLT further includes a power-down maintenance information acquisition module 502 and a power-down maintenance time calculation module 504.
  • the power-down maintenance information acquisition module 502 is configured to send an ONU power-down maintenance information request to the ONU or the service-side device, and receive the ONU power-down maintenance information sent by the ONU or the service-side device, where the power-down maintenance information is
  • the power-down maintenance time calculation module 504 is configured to calculate an ONU power-down maintenance time according to an ONU power-off maintenance parameter acquired by the OLT, And storing it in the first storage module 508.
  • the optical network unit 60 specifically includes: a second storage module 604 and a power failure maintenance information reporting module 602;
  • the second storage module 604 is configured to store the power-down maintenance information of the optical network unit 60.
  • the power-down maintenance information includes: a power-down maintenance time and/or a power-down maintenance parameter.
  • the power-down maintenance information reporting module 602 And receiving a power down maintenance information request from the optical network unit 60 sent by the optical line terminal 50, and transmitting the optical network power down maintenance information to the optical line terminal 50 according to the request.
  • the ONU When the ONU dynamically calculates the ONU power-down maintenance time according to the power-down maintenance parameter, the ONU further includes a power-down maintenance time calculation module 606, configured to calculate the ONU power-down maintenance time according to the ONU power-down maintenance parameter and store it in the first Two storage modules 604.
  • a power-down maintenance time calculation module 606 configured to calculate the ONU power-down maintenance time according to the ONU power-down maintenance parameter and store it in the first Two storage modules 604.
  • the ONU further includes a power-down maintenance time extension module 608, which is used to extend the time when the ONU continues to work when the power is off. To ensure that the ONU can accurately report the power-down indication to the OLT when the power is off.
  • the optical distribution network 80 includes: a backbone fiber and an optical splitter for connecting the optical line terminal 50 and the optical network unit 60 through a trunk fiber and an optical splitter.
  • the information about the power-down maintenance of the optical network unit is obtained, where the power-down maintenance information includes: a power-down maintenance time and/or a power-down maintenance parameter; when the optical network unit is offline, according to the light
  • the power-down maintenance information of the network unit performs power-down processing on the optical network unit, and solves the problem that the optical line terminal cannot correctly determine the power-down problem of the optical network unit when the optical network unit is powered down or the optical distribution network is faulty in the prior art.
  • the optical network unit completes the reporting of the power-down indication during the power-down maintenance time, which improves the stability of the power-down indication reported by the optical network unit, thereby providing a more accurate input for fault diagnosis.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Small-Scale Networks (AREA)
  • Optical Communication System (AREA)

Abstract

Dans un mode de réalisation, l'invention concerne un procédé, un dispositif et un système de traitement hors-tension d'une unité de réseau optique. Ledit procédé consiste en: l'obtention d'une information de maintien hors-tension de l'unité de réseau optique comportant la durée de maintien hors tension et/ou les paramètres de maintien hors tension; dans le cas où l'unité de réseau optique est hors tension, la mise en oeuvre du traitement hors tension de l'unité de réseau optique est effectuée selon l'information de maintien hors tension de l'unité de réseau optique. Le mode de réalisation de la présente invention remédie aux problèmes de l'art antérieur où les terminaisons de lignes optiques ne pouvaient pas déterminer avec précision si l'unité de réseau optique était bien hors tension ou le réseau de distribution optique défaillant, assure la création du rapport d'indication d'état hors tension lors du délai de maintien hors tension et améliore la stabilité du rapport d'indication d'état hors tension de l'unité de réseau optique, permettant ainsi plus de précision dans le diagnostic de défaillance.
PCT/CN2009/073693 2008-09-02 2009-09-02 Procédé, dispositif et système de traitement hors-tension d'unité de réseau optique Ceased WO2010025668A1 (fr)

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TWI573416B (zh) * 2014-03-12 2017-03-01 鴻海精密工業股份有限公司 獲取用戶端設備斷電狀態的方法和頭端設備
CN112866839A (zh) * 2021-01-05 2021-05-28 深圳市双翼科技股份有限公司 万兆无源光网络终端设备掉电告警装置以及方法

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CN106033997A (zh) * 2015-03-20 2016-10-19 中兴通讯股份有限公司 一种掉电告警的处理方法、装置及终端
CN105656549B (zh) * 2016-01-29 2018-01-12 武汉长光科技有限公司 一种PON系统OLT识别ONU假性dying gasp的方法
CN109510727A (zh) * 2018-12-24 2019-03-22 深圳市友华通信技术有限公司 一种自动定位onu故障的方法和系统
CN112118499B (zh) * 2019-06-19 2023-07-21 中兴通讯股份有限公司 光网络单元onu掉电告警方法、装置、设备及存储介质
CN112491598B (zh) * 2020-11-13 2023-08-08 中盈优创资讯科技有限公司 一种olt掉电脱网预警分析方法及装置

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WO2016192212A1 (fr) * 2015-06-01 2016-12-08 中兴通讯股份有限公司 Procédé et appareil de traitement d'informations d'avertissement de mise hors tension d'unité de réseau optique onu
CN112866839A (zh) * 2021-01-05 2021-05-28 深圳市双翼科技股份有限公司 万兆无源光网络终端设备掉电告警装置以及方法

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