CN114630213A - Weak light rectification method and system of PON (Passive optical network) - Google Patents

Abstract

The embodiment of the application provides a weak light rectification method and a system of a PON network, wherein the method comprises the following steps: carrying out weak light detection on the ONU in the PON network to obtain a weak light ONU; carrying out weak light positioning according to the cascade relation between the weak light ONU and an optical splitter in the PON and the sending optical power of a PON port to obtain a weak light fault point in the PON; and searching the rectification suggestion related to the weak light fault point from a preset experience library, and issuing the rectification suggestion to the terminal equipment of the maintenance personnel. The weak light rectification system of the PON network comprises: the device comprises a weak light detection module, a weak light positioning module and a weak light rectification module. The embodiment of the application improves the weak light detection efficiency of the PON network, and is beneficial to improving the weak light rectification efficiency.

Description

Weak light rectification method and system of PON (Passive optical network)

Technical Field

The present application relates to the field of wireless communication technologies, and in particular, to a method and a system for modifying weak light in a PON network.

Background

An Optical module (ONU) is a user-side device of a PON (Passive Optical Network), and the ONU receives an Optical signal from an OLT (Optical line terminal) and converts the Optical signal into an electrical signal to provide an internet service for a user. When the received optical power index of the ONU device is low, an ONU weak light phenomenon occurs, which may cause packet loss, delay, jitter, and the like in a home-wide network, affect a user Internet access rate, and also cause a pause phenomenon in an IPTV (Internet Protocol Television), which affects a user Internet access experience.

In the related art, the method for discovering and remedying the ONU weak light mainly depends on user complaints and periodic inspection, and when the user complaints are received or the periodic inspection is carried out, the maintenance personnel carry out the weak light detection on the ONU so as to remediate the ONU.

Disclosure of Invention

In order to solve the technical problem, the application provides a weak light rectification method and a system of a PON network.

In a first aspect, the present application provides a weak optical modifying method for a PON network, where the weak optical modifying method includes:

carrying out weak light detection on the ONU in the PON network to obtain a weak light ONU;

carrying out weak light positioning according to the cascade relation between the weak light ONU and an optical splitter in the PON and the sending optical power of a PON port to obtain a weak light fault point in the PON;

and searching the rectification suggestion related to the weak light fault point from a preset experience library, and issuing the rectification suggestion to the terminal equipment of the maintenance personnel.

In some embodiments, the weak light modifying method further comprises:

and receiving an adjustment and modification result verification request from the terminal equipment, and verifying the adjustment and modification result of the weak optical ONU according to the latest optical power value of the weak optical ONU.

In some embodiments, the performing weak light positioning according to a hierarchy of the weak light ONU in the PON network to obtain a weak light fault point in the PON network includes:

in the PON network, if all the ONUs under one PON port of the OLT equipment are the weak light ONUs and the transmitting optical power of the PON port is normal, judging that a main optical fiber connected with the PON port is a weak light fault point;

in the PON network, if all ONUs under one secondary optical splitter are the weak light ONUs and the transmitting optical power of a PON port corresponding to the secondary optical splitter is normal, judging that a weak light fault point exists between the secondary optical splitter and a primary optical splitter, wherein the primary optical splitter is connected between the secondary optical splitter and the PON port;

in the PON network, if all ONUs under one secondary optical splitter are not uniformly weak-light ONUs and the transmitting optical power of a PON port corresponding to the secondary optical splitter is normal, it is judged that a branch optical fiber between the secondary optical splitter and the weak-light ONUs is a weak-light fault point.

In some embodiments, the searching for the correction suggestion associated with the weak light fault point from the preset experience library includes:

and searching for the correction suggestion associated with the weak light fault point from a preset experience library according to the state of the ONU corresponding to the weak light fault point, the alarm information and the trend of the optical power.

In some embodiments, the performing weak light detection on an ONU in the PON network to obtain a weak light ONU includes:

calculating the average value of the optical power of the ONU within a preset range in a preset period;

and comparing the average value of the optical power with a low-light threshold value, and judging that the ONU is the low-light ONU according to the condition that the average value of the optical power is smaller than the low-light threshold value.

In some embodiments, the weak light threshold value is determined according to an optical module type of the ONU.

In some embodiments, the predetermined range includes-60 to 60dbm (decibel milliwatts).

In a second aspect, the present application provides a weak optical rectification system of a PON network, including: : a weak light detection module, a weak light positioning module and a weak light modification module,

the weak light detection module is used for performing weak light detection on the ONU in the PON network to obtain the weak light ONU;

the weak light positioning module is used for performing weak light positioning according to the cascade relation between the weak light ONU and the optical splitter in the PON network and the sending optical power of the PON port to obtain a weak light fault point in the PON network;

and the weak light rectification module is used for searching a rectification suggestion related to the weak light fault point from a preset experience library and issuing the rectification suggestion to terminal equipment of an assembly and maintenance worker.

In some embodiments, the weak optical rectification system of the PON network further comprises:

and the rectification verification module is used for receiving a rectification result verification request from the terminal equipment and verifying the rectification result of the weak optical ONU according to the latest optical power value of the weak optical ONU.

In some embodiments, the low-light localization module comprises:

the first positioning unit is used for judging that a main optical fiber corresponding to the OLT equipment is a weak light fault point if all ONUs under a PON port of the OLT equipment are the weak light ONUs and the transmitting optical power of the PON port is normal in the PON network;

a second positioning unit, configured to determine, in the PON network, that a weak-light fault point is located between a secondary optical splitter and a primary optical splitter if all ONUs under one PON port are not uniform to be the weak-light ONUs and a transmitted optical power of the PON port corresponding to the secondary optical splitter is normal;

and the third positioning unit is used for judging that the branch optical fiber corresponding to the secondary optical splitter is a weak light fault point in the PON network if all the ONUs under one secondary optical splitter are not uniform to be the weak light ONUs and the transmitting optical power of the PON port corresponding to the secondary optical splitter is normal.

In some embodiments, the low light detection module comprises:

the abnormal filtering unit is used for calculating the average value of the optical power of the ONU within a preset range in a preset period;

and the weak light judging unit is used for comparing the average value of the optical power with a weak light threshold value and judging that the ONU is the weak light ONU according to the condition that the average value of the optical power is smaller than the weak light threshold value.

In some embodiments, the weak light threshold value is determined according to an optical module type of the ONU.

In some embodiments, the predetermined range includes-60 to 60 decibel milliwatts.

The method and the system for weak light modification of the PON network have the advantages that:

according to the embodiment of the application, the weak light ONU is obtained by performing weak light detection on the ONU in the PON, and then weak light positioning is performed according to the cascade relation between the weak light ONU and the optical splitter in the PON and the sending optical power of the PON port, so that a weak light fault point in the PON is obtained, and the weak light detection efficiency of the PON is improved; and a preset experience base is established, so that a rectification suggestion is provided for rectification of a weak light fault point, and the rectification success rate and the rectification efficiency are improved.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.

Fig. 1 is a schematic diagram of a networking structure of a PON network according to an embodiment of the present application;

fig. 2 is a schematic diagram of a networking structure of another PON network according to an embodiment of the present application;

fig. 3 is a schematic flowchart of a weak light modification method for a PON network according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a data acquisition networking system according to an embodiment of the present application;

fig. 5 is a schematic flowchart of a weak light fault point analysis method according to an embodiment of the present application;

fig. 6 is a schematic diagram of a local network structure of a PON network according to an embodiment of the present disclosure;

fig. 7 is a schematic diagram of a local network structure of another PON network according to an embodiment of the present application;

fig. 8 is a schematic diagram of a local network structure of another PON network according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a weak optical rectification system of a PON network according to an embodiment of the present application.

Detailed Description

To make the objects, embodiments and advantages of the present application clearer, the following description of exemplary embodiments of the present application will clearly and completely describe the exemplary embodiments of the present application with reference to the accompanying drawings in the exemplary embodiments of the present application, and it is to be understood that the described exemplary embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

All other embodiments, which can be derived by a person skilled in the art from the exemplary embodiments described herein without inventive step, are intended to be within the scope of the claims appended hereto. In addition, while the disclosure herein has been presented in terms of one or more exemplary examples, it should be appreciated that aspects of the disclosure may be implemented solely as a complete embodiment.

It should be noted that the brief descriptions of the terms in the present application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of the present application. These terms should be understood in their ordinary and customary meaning unless otherwise indicated.

The terms "first," "second," "third," and the like in the description and claims of this application and in the above-described drawings are used for distinguishing between similar or analogous objects or entities and are not necessarily intended to limit the order or sequence of any particular one, Unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

Furthermore, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or device that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or device.

The term "module," as used herein, refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and/or software code that is capable of performing the functionality associated with that element.

Referring to fig. 1, a schematic diagram of a networking structure of a PON Network provided in this embodiment of the present application is shown in fig. 1, where the PON Network may include an OLT, an Optical splitter, and an ONU, and in some embodiments, the PON Network may further include an ONT (Optical Network Terminal), and the ONT may be disposed in a home of a user and connected to the ONU.

The OLT is located in the mobile access side machine room, the optical splitter is located in the cell corridor, the ONU may be located on a specific floor, and the ONT may be located in the home of the user.

The OLT is connected with the optical splitter through the optical fiber, and the optical splitter is connected with the ONU through the optical fiber, wherein the OLT and the optical splitter can be in a relation of 1 to N, and the optical splitter and the ONU can be in a relation of 1 to N.

In some embodiments, a plurality of stages of optical splitters may be included in the PON network, and as shown in fig. 2, the OLT may be connected to the primary optical splitter via optical fibers, the primary optical splitter may be connected to the secondary optical splitter via optical fibers, and the secondary optical splitter may be connected to the ONUs via optical fibers. In a PON network, when any device or a segment of optical fiber fails, a weak light phenomenon may occur in a certain ONU, and in order to correct the weak light phenomenon, an embodiment of the present application provides a weak light correction method for the PON network, referring to fig. 3, a flow diagram of the weak light correction method for the PON network provided by the embodiment of the present application is shown, as shown in fig. 3, the weak light correction method may include the following steps:

step S110: and carrying out weak light detection on the ONU in the PON network to obtain the weak light ONU.

In some embodiments, the PON network may be configured to perform data acquisition by arranging a data acquisition networking system, and detect an ONU with weak light according to the acquired data. Referring to fig. 4, a schematic structural diagram of a data acquisition networking system provided in an embodiment of the present application is shown in fig. 4, where the data acquisition networking system includes an acquisition server group deployed in a centralized manner in a province company, and the acquisition server group is accessed to metropolitan area networks of various cities, such as a metropolitan area network in a city a, a metropolitan area network in a city B, and a metropolitan area network in a city C in fig. 4, through an MDCN network, and is directly connected to OLT devices in various cities to perform data acquisition on the OLT devices in various cities, where the OLT devices in various cities are respectively in communication connection with OMC of respective manufacturers.

In some embodiments, the data collection of the collection server farm is as follows: the OLT/ONU is subjected to acquisition of resource data and performance data in an SNMP mode, wherein the resource data can comprise the following data: a. OLT equipment data b and board card data: service board c, port class data: the uplink port, the PON port d and ONU equipment data. The role of collecting resource data may include: a. the information of the users and the cells is associated upwards, the users and the cells with weak light faults are determined, and the assembly and maintenance personnel are assisted to process the information; b. and (5) associating performance data such as optical power and the like downwards, finding out the position of equipment with weak light, and positioning the fault. The performance data may include the following: a. the ONU receives optical power, the ONU sends optical power b, the ONU online state, the PON port online state, the OLT online state c, the last online time of the ONUs and the last offline time of the ONU, the performance data can be used for weak light detection, the minimum acquisition frequency of the performance data can be acquired every 15 minutes, and the acquisition frequency of the resource data can be acquired every day. The collection server group stores collected resource data and performance data to the database server, and the application server and the WEB server can be in communication connection with the database server to perform data processing and dim light judgment, wherein in some embodiments, the application server can be configured to execute the dim light rectification method shown in fig. 3, control the collection server group to perform data collection, further perform data processing on the collected data, judge a dim light fault point, issue a rectification suggestion, and perform rectification verification.

In some embodiments, the data processing includes the following: analyzing, correlating and warehousing the collected data according to different MIB (Management Information Base) nodes; meanwhile, the performance data are gathered according to different dimensions of hours, days, weeks and months at regular time.

In some embodiments, considering that the damage to the optical fiber caused by some accidental collisions, touch, and the like is recoverable, the average value is used instead of the instantaneous value in the weak light judgment. The dim light determination may include the following:

and (3) exception filtering: and calculating the average value of the optical power of the ONU within a preset range in a preset period, wherein the preset period can be one day, the preset range can be (-60), and the unit is dBm (decibel-milliwatt).

And (3) judging the weak light ONU: comparing the average value of the optical power with a low-light threshold value, and judging that the ONU is the low-light ONU according to the condition that the average value of the optical power is smaller than the low-light threshold value, wherein the low-light threshold value is determined according to the type of an optical module of the ONU, for example, the low-light threshold value is determined to be-25 dBm according to the condition that the type of the ONU is Class B +; and determining the weak light threshold value to be-27 dBm according to the type of the ONU being Class C +.

Step S120: and carrying out weak light positioning according to the cascade relation between the weak light ONU and an optical splitter in the PON and the sending light power of the PON port to obtain a weak light fault point in the PON.

In some embodiments, after the weak-light ONU is detected, the ONU receiving optical power, the PON port transmitting optical power, and the cascade relationship between the ONU and the optical splitter may be subjected to multilayer analysis according to the level of the weak-light ONU in the PON network, so as to obtain a weak-light fault point. An exemplary weak light fault point analysis method can be seen in fig. 5, which includes steps S201-S203.

Step S201: in the PON network, if all the ONUs under one PON port of the OLT equipment are the weak light ONUs and the transmitting optical power of the PON port is normal, the main optical fiber connected with the PON port is judged to be a weak light fault point.

Referring to fig. 6, which is a schematic diagram of a local network structure of a PON network according to some embodiments, as shown in fig. 6, an optical fiber between an OLT device and a first-stage optical splitter may be referred to as a trunk optical fiber, and a relationship between the OLT device and the first-stage optical splitter may be 1 to N, taking one of the first-stage optical splitters as an example, the OLT device is connected to the first-stage optical splitter through a PON port, and if all ONUs under the PON port are detected as weak-light ONUs, for example, in fig. 6, all 6 ONUs are detected as weak-light ONUs, and the transmission optical power of the PON port is normal, in general, the probability that all ONUs fail is small, and therefore, it can be determined that the trunk optical fiber between the PON port of the OLT device and the first-stage optical splitter fails, and the trunk optical fiber is a weak-light failure point. In fig. 6, the trunk fiber between the OLT device and the first-stage optical splitter is shown in bold, indicating that the trunk fiber is a weak light fault point.

Step S202: in the PON network, if all the ONUs under one of the secondary optical splitters are the weak light ONUs and the transmitting optical power of the PON port corresponding to the secondary optical splitter is normal, it is determined that a weak light fault point exists between the secondary optical splitter and the primary optical splitter, wherein the primary optical splitter is connected between the secondary optical splitter and the PON port.

Referring to fig. 7, which is a schematic diagram of a local network structure of a PON network according to some embodiments, as shown in fig. 7, an optical fiber between an OLT device and a first optical splitter may be referred to as a trunk optical fiber, and when a PON port of the OLT is connected with the first optical splitter and a second optical splitter in sequence, if all ONUs under a certain second optical splitter have a weak light phenomenon, for example, in fig. 7, all of the upper 3 ONUs are detected as weak light ONUs, the lower 3 ONUs are not weak light ONUs, and a transmitting optical power of a PON port corresponding to the second optical splitter is normal, it may be considered that a weak light fault point exists between the first optical splitter corresponding to the second optical splitter and the second optical splitter. In fig. 7, the optical fiber between the first-stage splitter and one of the second-stage splitters is shown in bold, indicating that the optical fiber is a weak light fault point.

Step S203: in the PON network, if all ONUs under one secondary optical splitter are not uniformly weak-light ONUs and the transmitting optical power of a PON port corresponding to the secondary optical splitter is normal, it is judged that a branch optical fiber between the secondary optical splitter and the weak-light ONUs is a weak-light fault point.

Referring to fig. 8, which is a schematic diagram of a local network structure of a PON network according to some embodiments, as shown in fig. 8, an optical fiber between an OLT device and a first optical splitter may be referred to as a main optical fiber, and when a PON port of the OLT is connected with the first optical splitter and a second optical splitter in sequence, if a weak light phenomenon occurs in a part of ONUs under a certain second optical splitter, for example, in fig. 8, an uppermost ONU is detected as a weak light ONU, other ONUs are not weak light ONUs, and a transmitting optical power of a PON port corresponding to the second optical splitter is normal, a branch optical fiber between the second optical splitter and the weak light ONU may be considered as a weak light fault point. In fig. 8, the branch optical fiber between the upper two-stage optical splitter and the low-light ONU is shown in bold, and this branch optical fiber is a low-light fault point.

In some embodiments, after an optical fiber corresponding to a weak light fault point is determined, weak light influence positioning may be performed, for example, an ONU corresponding to the optical fiber is determined, and a home cell and an installed address of a user account are found in combination with a relationship between an SN code of the ONU and the user account, so that the fault point is accurately positioned, auxiliary troubleshooting is realized, and troubleshooting efficiency is improved.

Fig. 5-8 illustrate exemplary weak light localization methods, and in practical embodiments, weak light fault points may be determined according to other methods.

Step S130: and searching the rectification suggestion related to the weak light fault point from a preset experience library, and issuing the rectification suggestion to the terminal equipment of the maintenance personnel.

In some embodiments, the rectification experience base can be established in advance as a preset experience base for weak light rectification. In some embodiments, the preset experience library can set dimensions such as a weak light reason and an application scene, and common rectification suggestions are solidified to facilitate searching.

In some embodiments, after determining the weak light fault point, the application server may associate the state of the weak light ONU, the alarm information, and the optical power change trend of about 6 hours, and then search a preset experience library according to the associated data to obtain an adjustment and modification suggestion of the weak light fault point, where an exemplary adjustment and modification suggestion is as follows:

if the state of the ONU corresponding to the weak light fault point is offline, the ONU is corrected and recommended to be remotely restarted, and if the ONU fails to be restarted, the ONU is recommended to be replaced;

if the ONU corresponding to the weak light fault point has LOS (LOSs Of Signal) alarm, the rectification proposal is to replace the tail fiber;

if the ONU corresponding to the weak light fault point has a DyingGasp (power failure) alarm, the rectification proposal is to be tested after being powered up again;

if the optical power of the ONU corresponding to the weak light fault point is always in a descending trend and the trend is severe, the modification is recommended to be the replacement of the ONU;

if the optical power of the ONU corresponding to the weak light fault point is always in a descending trend and the trend is relatively gentle, the modification proposal is to change cold connection into hot melting;

if the optical power trend of the ONU corresponding to the weak light fault point is fluctuating up and down and has violent amplitude, the flange plate is replaced by the modification suggestion;

and if the optical power trend of the ONU corresponding to the weak light fault point is irregular, suggesting to clean the optical splitter. In some embodiments, the application server may send the rectification advice to the mobile terminal of the serviceman for the serviceman to refer to, so as to rectify the weak light fault point.

Step S140: and receiving an adjustment and modification result verification request from the terminal equipment, and verifying the adjustment and modification result of the weak optical ONU according to the latest optical power value of the weak optical ONU.

In some embodiments, after the serviceman corrects the weak light fault point, the serviceman may report the correction result verification request through the terminal device, for example, on the terminal device, may log in the OLT device, input the sn (Serial Number) code of the corresponding ONU, and execute the instruction "query the ONU receiving optical power", thereby generating the correction result verification request.

In some embodiments, after receiving the verification request of the rectification result, the server may query the latest receiving optical power of the ONU, and further determine whether the receiving optical power is greater than the corresponding threshold, if so, the rectification result is passed, and if not, the rectification result is failed, and the server may return the rectification result and the receiving optical power to the terminal device, so that the maintainer may view the rectification result and the receiving optical power on the terminal device.

Therefore, in the link of verifying the rectification result, the embodiment of the application realizes the full-flow support from login OLT → execution instruction → instruction result analysis → result comparison verification by an IT means, improves the automation level of the verification process and is beneficial to improving the verification efficiency.

Corresponding to the weak light rectification method, an embodiment of the present application further provides a weak light rectification system of a PON network, and referring to fig. 9, the weak light rectification system may include a weak light detection module, a weak light positioning module, a weak light rectification module, and a rectification verification module.

The weak light detection module is used for performing weak light detection on the ONU in the PON network to obtain the weak light ONU;

the weak light positioning module is used for performing weak light positioning according to the cascade relation between the weak light ONU and the optical splitter in the PON network and the sending optical power of the PON port to obtain a weak light fault point in the PON network;

the weak light rectification module is used for searching a rectification suggestion related to the weak light fault point from a preset experience library and issuing the rectification suggestion to terminal equipment of an assembly and maintenance worker;

and the rectification verification module is used for receiving a rectification result verification request from the terminal equipment and verifying the rectification result of the weak light ONU according to the latest optical power value of the weak light ONU.

Wherein the weak light positioning module may include:

the first positioning unit is used for judging that a main optical fiber corresponding to the OLT equipment is a weak light fault point if all ONUs under a PON port of the OLT equipment are the weak light ONUs and the transmitting optical power of the PON port is normal in the PON network;

a second positioning unit, configured to determine, in the PON network, that a weak-light fault point is located between the secondary optical splitter and the primary optical splitter if all ONUs under one PON port are not uniform to be the weak-light ONUs and a transmission optical power of the PON port corresponding to the secondary optical splitter is normal;

and the third positioning unit is used for judging that the branch optical fiber corresponding to the secondary optical splitter is a weak light fault point in the PON network if all the ONUs under one secondary optical splitter are not uniform to be the weak light ONUs and the transmitting optical power of the PON port corresponding to the secondary optical splitter is normal.

The weak light detection module may include:

the abnormal filtering unit is used for calculating the average value of the optical power of the ONU within a preset range in a preset period;

and the weak light judging unit is used for comparing the average value of the optical power with a weak light threshold value and judging that the ONU is a weak light ONU according to the condition that the average value of the optical power is smaller than the weak light threshold value.

As can be seen from the above embodiments, in the embodiments of the present application, a weak light ONU is obtained by performing weak light detection on an ONU in a PON network, and then weak light positioning is performed according to a cascade relationship between the weak light ONU and an optical splitter in the PON network and a transmission optical power of a PON port to obtain a weak light fault point in the PON network, so that weak light detection efficiency of the PON network is improved; a preset experience base is established, so that an rectification suggestion is provided for rectification of a weak light fault point, and the rectification success rate and the rectification efficiency are improved; and the verification efficiency of the rectification result is improved by setting an automatic rectification verification flow.

Since the above embodiments are all described by referring to and combining with other embodiments, the same portions are provided between different embodiments, and the same and similar portions between the various embodiments in this specification may be referred to each other. And will not be described in detail herein.

It is noted that, in this specification, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a circuit structure, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such circuit structure, article, or apparatus. Without further limitation, the presence of an element identified by the phrase "comprising an … …" does not exclude the presence of other like elements in a circuit structure, article, or device comprising the element.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

The above embodiments of the present application do not limit the scope of the present application.

Claims (10)

1. A weak light modification method of a PON (Passive optical network) is characterized by comprising the following steps:

carrying out weak light detection on the ONU in the PON network to obtain a weak light ONU;

performing weak light positioning according to the cascade relation between the weak light ONU and an optical splitter in the PON and the sending optical power of the PON port to obtain a weak light fault point in the PON;

and searching the rectification suggestion related to the weak light fault point from a preset experience library, and issuing the rectification suggestion to the terminal equipment of the maintenance personnel.

2. A method of weak optical modification of a PON network according to claim 1, wherein the method of weak optical modification of a PON network further comprises:

and receiving an adjustment and modification result verification request from the terminal equipment, and verifying the adjustment and modification result of the weak optical ONU according to the latest optical power value of the weak optical ONU.

3. The method for weak light modification of a PON network according to claim 1, wherein the performing weak light positioning according to the hierarchy of the weak light ONUs in the PON network to obtain a weak light fault point in the PON network comprises:

in the PON network, if all the ONUs under one PON port of the OLT equipment are the weak light ONUs and the transmitting optical power of the PON port is normal, judging that a main optical fiber connected with the PON port is a weak light fault point;

in the PON network, if all ONUs under one secondary optical splitter are the weak light ONUs and the transmitting optical power of a PON port corresponding to the secondary optical splitter is normal, judging that a weak light fault point exists between the secondary optical splitter and a primary optical splitter, wherein the primary optical splitter is connected between the secondary optical splitter and the PON port;

in the PON network, if all ONUs under one secondary optical splitter are not uniformly weak-light ONUs and the transmitting optical power of a PON port corresponding to the secondary optical splitter is normal, it is judged that a branch optical fiber between the secondary optical splitter and the weak-light ONUs is a weak-light fault point.

4. A weak light modification method for a PON network according to claim 1, wherein the searching for the modification advice associated with the weak light fault point from a preset experience library comprises:

and searching for the correction suggestion associated with the weak light fault point from a preset experience library according to the state of the ONU corresponding to the weak light fault point, the alarm information and the trend of the optical power.

5. The method of claim 1, wherein the performing weak light detection on the ONU in the PON network to obtain a weak light ONU comprises:

calculating the average value of the optical power of the ONU within a preset range in a preset period;

and comparing the average value of the optical power with a low-light threshold value, and judging that the ONU is the low-light ONU according to the condition that the average value of the optical power is smaller than the low-light threshold value.

6. A method of weak optical rectification in a PON network as claimed in claim 3, wherein the weak optical threshold is determined according to the optical module type of the ONU.

7. A weak light modification system of a PON network is characterized by comprising: a weak light detection module, a weak light positioning module and a weak light modification module, wherein,

the weak light detection module is used for performing weak light detection on the ONU in the PON network to obtain the weak light ONU;

the weak light positioning module is used for performing weak light positioning according to the cascade relation between the weak light ONU and the optical splitter in the PON network and the sending optical power of the PON port to obtain a weak light fault point in the PON network;

and the weak light rectification module is used for searching a rectification suggestion related to the weak light fault point from a preset experience library and issuing the rectification suggestion to terminal equipment of an assembly and maintenance worker.

8. A weak optical rectification system of a PON network according to claim 7, characterized in that the weak optical rectification system further comprises: and the rectification verification module is used for receiving a rectification result verification request from the terminal equipment and verifying the rectification result of the weak optical ONU according to the latest optical power value of the weak optical ONU.

9. A weak light modification system of a PON network according to claim 7, wherein the weak light positioning module comprises:

the first positioning unit is used for judging that a main optical fiber corresponding to the OLT equipment is a weak light fault point if all ONUs under a PON port of the OLT equipment are the weak light ONUs and the transmitting optical power of the PON port is normal in the PON network;

a second positioning unit, configured to determine, in the PON network, that a weak-light fault point is located between a secondary optical splitter and a primary optical splitter if all ONUs under one PON port are not uniform to be the weak-light ONUs and a transmitted optical power of the PON port corresponding to the secondary optical splitter is normal;

and a third positioning unit, configured to determine that a branch optical fiber corresponding to a second-stage optical splitter is a weak light fault point in the PON network if all ONUs under the second-stage optical splitter are not uniform to be the weak light ONUs and a transmission optical power of a PON port corresponding to the second-stage optical splitter is normal.

10. A system for weak light modification of a PON network according to claim 7, wherein the weak light detection module comprises:

the abnormal filtering unit is used for calculating the average value of the optical power of the ONU within a preset range in a preset period;

and the weak light judging unit is used for comparing the average value of the optical power with a weak light threshold value and judging that the ONU is the weak light ONU according to the condition that the average value of the optical power is smaller than the weak light threshold value.

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