CN117439667A - Light attenuation fault detection method, device and storage medium - Google Patents
Light attenuation fault detection method, device and storage medium Download PDFInfo
- Publication number
- CN117439667A CN117439667A CN202311389368.7A CN202311389368A CN117439667A CN 117439667 A CN117439667 A CN 117439667A CN 202311389368 A CN202311389368 A CN 202311389368A CN 117439667 A CN117439667 A CN 117439667A
- Authority
- CN
- China
- Prior art keywords
- optical
- onu
- light attenuation
- attenuation value
- light
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 61
- 230000003287 optical effect Effects 0.000 claims abstract description 330
- 238000000034 method Methods 0.000 claims abstract description 46
- 238000004891 communication Methods 0.000 claims abstract description 13
- 238000004590 computer program Methods 0.000 claims description 8
- 239000013307 optical fiber Substances 0.000 abstract description 13
- 230000005540 biological transmission Effects 0.000 abstract description 11
- 230000015654 memory Effects 0.000 description 16
- 238000010586 diagram Methods 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000002159 abnormal effect Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 230000008447 perception Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000802 evaporation-induced self-assembly Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000005375 photometry Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
The application provides a light attenuation fault detection method, a device and a storage medium, relates to the technical field of communication, and can solve the problems of low detection accuracy and detection efficiency of fault points in an optical fiber network transmission link. The method comprises the following steps: acquiring an uplink light attenuation value from an Optical Line Terminal (OLT) to an optical splitter and a downlink light attenuation value from the optical splitter to at least one Optical Network Unit (ONU) by using a detector, wherein the optical splitter comprises a main interface and a standby interface, and the detector is connected with the optical splitter through the standby interface; determining uplink weak light under the condition that the uplink light attenuation value is smaller than an uplink light attenuation threshold value, wherein the uplink light is the connection part of the OLT and the optical splitter; and determining the ONU with the downlink light attenuation value larger than or equal to the downlink light attenuation threshold value in the at least one ONU as a weak light ONU, wherein the downlink is the connection part of the beam splitter and the ONU. The method and the device are used for maintaining the quality of the optical fiber network transmission link and the port resources of the optical splitter.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for detecting an optical attenuation fault, and a storage medium.
Background
The passive optical network (Passive Optical Network, PON) provides connection between an optical line terminal (Optical line terminal, OLT) and a multi-person optical network unit (Optical Network Unit, ONU), wherein the coverage of optical network resources is completed from point to point through optical splitters, and as optical splitters are applied more and more widely, users are more and more, and quality of optical network transmission links and maintenance of optical splitter port resources are also more important.
In the prior art, when the quality of a transmission link of a PON is detected, an OLT access network manager monitors an optical attenuation value of each ONU, performs positioning processing on the ONU with an excessively large optical attenuation value (weak light), then assigns a maintainer to remove a site unplug a beam splitter connector for performing photometry verification, and compares the monitoring result with a background network manager alarm to analyze whether a beam splitter port is occupied. However, when the method is used for positioning the low-light ONU, the low-light positioning inaccuracy may be caused due to the fact that the port resources of the optical splitter are not changed or cleaned in time in the system and the field when the broadband user increases or decreases, and the field verification needs to be performed manually after the positioning, so that the detection efficiency is further lower.
In summary, the existing detection method has the problems of insufficient detection accuracy and low detection efficiency.
Disclosure of Invention
The application provides a method, a device and a storage medium for detecting optical attenuation faults, which can solve the problems of low detection accuracy and detection efficiency of fault points in an optical fiber network transmission link.
In order to achieve the above purpose, the present application adopts the following technical scheme:
in a first aspect, the present application provides a method for detecting an optical attenuation fault, the method comprising: acquiring an uplink light attenuation value from an Optical Line Terminal (OLT) to an optical splitter and a downlink light attenuation value from the optical splitter to at least one Optical Network Unit (ONU) by using a detector, wherein the optical splitter comprises a main interface and a standby interface, and the detector is connected with the optical splitter through the standby interface; determining uplink weak light when the uplink light attenuation value is smaller than an uplink light attenuation threshold value, wherein the uplink light is the connection part of the OLT and the beam splitter; and determining an ONU with a downlink light attenuation value larger than or equal to a downlink light attenuation threshold value in the at least one ONU as a weak light ONU, wherein the downlink is a connection part of the optical splitter and the ONU.
Based on the above technical scheme, the optical attenuation fault detection method provided by the embodiment of the application can utilize the spare interface of the optical splitter to be connected with the detector, and directly acquire the uplink optical attenuation value from the OLT to the optical splitter. The downlink light attenuation value of the optical splitter to each ONU is obtained, and then the uplink light attenuation value is compared with an uplink light attenuation threshold value to determine whether the uplink light attenuation value is uplink weak light; and determining the ONU with the downlink light attenuation value larger than or equal to the downlink light attenuation threshold value as a weak light ONU from all the ONUs connected by the optical splitter under the condition that the uplink weak light is not uplink weak light. The spare interface of the beam splitter can be used for being connected with the detector to respectively acquire the uplink light attenuation value and the downlink light attenuation value, so that the light attenuation fault condition is detected under the condition that the main interface is not disconnected (the use of a normal user is not influenced), and the detection efficiency is improved; meanwhile, when the downlink light attenuation value is acquired, the downlink light attenuation value of each ONU connected with the beam splitter is acquired and is respectively and independently judged, so that the accuracy of detecting the weak light ONU is further ensured on the basis of improving the detection efficiency.
In a first possible implementation manner of the first aspect, the acquiring, by using a detector, a downlink optical attenuation value of the optical splitter to at least one optical network unit ONU includes: aiming at one ONU, the detector is adopted to acquire the target distance from the beam splitter to the ONU; and calculating a downlink light attenuation value from the optical splitter to the ONU according to the target distance, a unit light attenuation value of the second optical signal and a fixed light attenuation value, wherein the unit light attenuation value is an attenuation value of the optical signal in the unit distance, and the fixed light attenuation value is a wire loss value and/or a joint loss value.
In a second possible implementation manner of the first aspect, the acquiring, with the detector, a target distance from the splitter to the ONU includes: at a first time point, transmitting a first optical signal to the ONU by adopting the detector; recording a second time point when a second optical signal returned by the ONU is received; and calculating the target distance from the optical splitter to the ONU based on the first time point, the second time point and the optical signal speed.
In a third possible implementation manner of the first aspect, after the sending, at a first point in time, the first optical signal to the ONU with the detector, the method further includes: determining an optical splitter port which receives the second optical signal returned by the ONU as an occupied port; and determining the port of the optical splitter, which does not receive the second optical signal returned by the ONU, as an unoccupied port.
In a fourth possible implementation manner of the first aspect, the acquiring, by using a detector, an uplink light attenuation value from the OLT to the optical splitter includes: receiving a third optical signal by using the detector, wherein the third optical signal is a signal transmitted by the OTL after the initial optical signal is transmitted to the optical splitter; and calculating the uplink light attenuation value according to the initial light signal and the third light signal.
In a second aspect, the present application provides an optical attenuation fault detection device, the device comprising: an acquisition unit and a determination unit, wherein: the acquisition unit is configured to acquire an uplink light attenuation value from an optical line terminal OLT to an optical splitter and a downlink light attenuation value from the optical splitter to at least one optical network unit ONU by using a detector, where the optical splitter includes a primary interface and a standby interface, and the detector is connected to the optical splitter through the standby interface; the determining unit is configured to determine an uplink weak light when the uplink light attenuation value acquired by the acquiring unit is smaller than an uplink light attenuation threshold, where the uplink is a connection portion between the OLT and the optical splitter; and the determining unit is configured to determine, as a weak light ONU, an ONU having a downlink light attenuation value greater than or equal to a downlink light attenuation threshold value, which is acquired by the acquiring unit, from the at least one ONU, where the downlink light is a connection portion between the optical splitter and the ONU.
In a first possible implementation manner of the second aspect, the acquiring unit is specifically configured to: aiming at one ONU, the detector is adopted to acquire the target distance from the beam splitter to the ONU; and calculating a downlink light attenuation value from the optical splitter to the ONU according to the target distance, a unit light attenuation value of the second optical signal and a fixed light attenuation value, wherein the unit light attenuation value is an attenuation value of the optical signal in the unit distance, and the fixed light attenuation value is a wire loss value and/or a joint loss value.
In a second possible implementation manner of the second aspect, the acquiring unit is specifically configured to: at a first time point, transmitting a first optical signal to the ONU by adopting the detector; recording a second time point when a second optical signal returned by the ONU is received; and calculating the target distance from the optical splitter to the ONU based on the first time point, the second time point and the optical signal speed.
In a third possible implementation manner of the second aspect, the determining unit is further configured to: after the acquiring unit transmits the first optical signal to the ONU at the first time point by using the detector, the method further includes: determining an optical splitter port which receives the second optical signal returned by the ONU as an occupied port; and determining the port of the optical splitter, which does not receive the second optical signal returned by the ONU, as an unoccupied port.
In a fourth possible implementation manner of the second aspect, the acquiring unit is specifically configured to: receiving a third optical signal by using the detector, wherein the third optical signal is a signal transmitted by the OTL after the initial optical signal is transmitted to the optical splitter; and calculating the uplink light attenuation value according to the initial light signal and the third light signal.
In a third aspect, the present application provides an optical attenuation fault detection device, including: a processor and a communication interface; the communication interface is coupled to a processor for running a computer program or instructions to implement the light failure detection method as described in any one of the possible implementations of the first aspect and the first aspect.
In a fourth aspect, the present application provides a computer readable storage medium having instructions stored therein which, when run on a terminal, cause the terminal to perform a light failure detection method as described in any one of the possible implementations of the first aspect and the first aspect.
In a fifth aspect, embodiments of the present application provide a computer program product comprising instructions which, when run on a light-failure detection arrangement, cause the light-failure detection arrangement to perform the light-failure detection method as described in any one of the possible implementations of the first aspect and the first aspect.
In a sixth aspect, embodiments of the present application provide a chip comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being configured to execute a computer program or instructions to implement the light failure detection method as described in any one of the possible implementations of the first aspect and the first aspect.
Specifically, the chip provided in the embodiments of the present application further includes a memory, configured to store a computer program or instructions.
Drawings
Fig. 1 is a system architecture diagram of a light attenuation fault detection method according to an embodiment of the present application;
fig. 2 is one of the method flowcharts of the light attenuation fault detection method provided in the embodiment of the present application;
fig. 3 is an external schematic view of a detector according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a master/slave interface of an optical splitter according to an embodiment of the present application;
FIG. 5 is a second flowchart of a method for detecting an optical attenuation fault according to an embodiment of the present application;
FIG. 6 is a third flowchart of a method for detecting an optical attenuation fault according to an embodiment of the present application;
FIG. 7 is a flowchart of a method for detecting an optical attenuation fault according to an embodiment of the present application;
FIG. 8 is a flowchart of a method for detecting an optical attenuation fault according to an embodiment of the present disclosure;
FIG. 9 is a flowchart of a method for detecting an optical attenuation fault according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of a light attenuation fault detection device according to an embodiment of the present application;
fig. 11 is a schematic structural diagram of another light attenuation fault detection device according to an embodiment of the present application.
Detailed Description
The following describes in detail a method, an apparatus, and a storage medium for detecting an optical attenuation fault provided in an embodiment of the present application with reference to the accompanying drawings.
The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone.
The terms "first" and "second" and the like in the description and in the drawings are used for distinguishing between different objects or for distinguishing between different processes of the same object and not for describing a particular sequential order of objects.
Furthermore, references to the terms "comprising" and "having" and any variations thereof in the description of the present application are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed but may optionally include other steps or elements not listed or inherent to such process, method, article, or apparatus.
It should be noted that, in the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.
In the description of the present application, unless otherwise indicated, the meaning of "a plurality" means two or more.
At present, the PON provides connection between the OLT and the multiple ONUs, and completes optical network resource coverage from point to multipoint through the optical splitter, shares an optical fiber medium between the OLT and a remote node, and has advantages of low cost, convenient maintenance, transparency to various services, and the like, so that the PON technology of an optical fiber broadband has become a mainstream technology of broadband access in a full-service operation period. However, as the application of the optical splitters becomes wider and wider, the quality of the transmission link of the optical fiber network and the maintenance of the port resources of the optical splitters become more important, so that the quality of the transmission link of the PON needs to be detected in order to ensure the normal operation of the PON and the full utilization of the port resources of the optical splitters, but as the broadband users increase and decrease, the accuracy of the port resources of the optical splitters decreases, the port utilization rate decreases, and the difficulty is increased for the subsequent light attenuation improvement and the service development.
In the prior art, when detecting the quality of an optical fiber network transmission link, the network management is performed through the OLT access network, the optical attenuation value of each ONU is monitored, and the ONU with overlarge optical attenuation value (such as weak light) is positioned, however, because the factors affecting the optical attenuation are more, different departments of different professions are involved, the network management application is not popular, and the equipment is continuously updated and iterated, so that maintenance personnel are required to learn and use in a time consuming manner, in addition, the defect that networking is required or misoperation data and the like affect other services exists in the use process, and the work of field personnel is very inconvenient.
By means of the method, the system and the device, the light receiving power of the weak light ONU in the first-level optical splitter and the light receiving power of the weak light ONU in the second-level optical splitter are collected, the duty ratio of the weak light ONU is calculated, and whether the weak light exists or not is judged, so that a weak light section is roughly positioned, the maintenance personnel still need to pull out the optical splitter connector for light measurement confirmation after arriving at the site, but the network use risk affecting normal users exists in the plug-in connector pulling test.
The port resources are actually occupied, whether the port resources are actually occupied or not is compared with the background alarm conditions in sequence, most of the time of the port resources depends on the butt joint guidance of the background professionals, the port resources are more related to the system, the on-site waiting time is longer, and the network use risk affecting the normal user is also caused by the plug connector test.
In summary, the existing light attenuation detection method mainly has the following problems:
(1) the accuracy is not enough: the rapid increase and decrease of broadband users, the port resources of the optical splitter are not changed or the waste tail fibers are cleaned in time in the system and the field, whether the connection failure or the terminal skin fiber failure is caused cannot be accurately judged, and the detection accuracy is reduced.
(2) High labor cost and low efficiency: because of the deficiency of the accuracy of the field resources, more professionals are needed to support and confirm the weak light or unoccupied ports, and part of the background is also needed to be processed by maintenance personnel close to the door to detect the light attenuation value, and the background is tested back and forth at the user side and the beam splitter side, so that the additional labor cost is needed, and the detection efficiency is low.
(3) User perception difference: when testing ports, the ports need to be plugged and unplugged, which affects the network experience of the network in use and causes poor user perception.
In order to solve the problems of low detection accuracy and detection efficiency of fault points in an optical fiber network transmission link in the prior art, the application provides an optical attenuation fault detection method, which can utilize a standby interface of an optical splitter to be connected with a detector so as to directly acquire an uplink optical attenuation value from an OLT to the optical splitter. The downlink light attenuation value of the optical splitter to each ONU is obtained, and then the uplink light attenuation value is compared with an uplink light attenuation threshold value to determine whether the uplink light attenuation value is uplink weak light; and determining the ONU with the downlink light attenuation value larger than or equal to the downlink light attenuation threshold value as a weak light ONU from all the ONUs connected by the optical splitter under the condition that the uplink weak light is not uplink weak light. The spare interface of the beam splitter can be used for being connected with the detector to respectively acquire the uplink light attenuation value and the downlink light attenuation value, so that the light attenuation fault condition is detected under the condition that the main interface is not disconnected (the use of a normal user is not influenced), and the detection efficiency is improved; meanwhile, when the downlink light attenuation value is acquired, the downlink light attenuation value of each ONU connected with the beam splitter is acquired and is respectively and independently judged, so that the accuracy of detecting the weak light ONU is further ensured on the basis of improving the detection efficiency.
Fig. 1 is a system architecture diagram of a light attenuation fault detection method according to an embodiment of the present application. The system architecture diagram may include: an optical line terminal a, an optical splitter B, a detector C, and optical network units D1 to D4.
Wherein: the optical line terminal a is configured to provide an optical fiber interface of a passive optical network facing a user, for example, to connect with the optical splitter B; the optical splitter B is configured to distribute optical signals transmitted in one optical fiber into a plurality of optical fibers according to a predetermined ratio, for example, distribute optical signals sent by the optical line terminal a to the optical network units D1 to D4; the detector C is configured to send and receive optical signals, such as sending optical signals to the optical network units D1 to D4, and receiving optical signals returned from the optical network units D1 to D4; the optical network units D1 to D4 are configured to provide a user service, such as receiving an optical signal sent by the optical line terminal a, and provide a wired network and/or a wireless network for the user.
For example, the detector C may be connected to the beam splitter B, and then the optical signal sent by the optical line terminal a may be received by the detector C, so as to measure an uplink light attenuation value; and transmitting optical signals to the optical network units D1 to D4 through the detector C, receiving the optical signals returned from the optical network units D1 to D4 to measure a downlink optical attenuation value, and finally, determining whether the optical network units are uplink weak light based on the uplink optical attenuation value and an uplink optical attenuation threshold value, and determining the weak optical network units from the optical network units D1 to D4 based on the downlink optical attenuation value and the downlink optical attenuation threshold value.
As shown in fig. 2, a flowchart of a light attenuation fault detection method according to an embodiment of the present application is provided, and the method includes the following steps S101 to S103:
s101, acquiring an uplink light attenuation value from an optical line terminal OLT to an optical splitter and a downlink light attenuation value from the optical splitter to at least one optical network unit ONU by adopting a detector.
In this embodiment of the present application, the splitter is configured to split an optical signal sent by the OLT into at least one portion.
For example, if 3 ONUs are connected to the splitter, the optical signal transmitted from the OLT is split into 3 parts.
In this embodiment of the present application, the optical splitter includes a primary interface and a standby interface.
Illustratively, the above-described primary interface is used to introduce optical fibers for accessing ethernet.
Illustratively, the backup interface is configured to connect to the detector.
For example, as shown in fig. 3, after the OLT is connected to the optical splitter through the main interface, the optical splitter may divide the optical signal sent by the OLT into 7 parts.
The beam splitters may be equally divided or unevenly divided, and they may be distributed according to a predetermined ratio.
In this embodiment of the present application, the detector is connected to the optical splitter through the standby interface.
Illustratively, as shown in fig. 4, the above-described detector includes a screen from which maintenance personnel can view, in particular, the light attenuation situation and the port occupation situation of the optical splitter.
Illustratively, after the detector is connected to the optical splitter through the spare interface of the optical splitter, the uplink optical attenuation value from the OLT to the optical splitter and the downlink optical attenuation value from the optical splitter to each ONU may be directly checked from the screen of the detector.
It should be noted that one ONU corresponds to one downlink light attenuation value.
S102, determining uplink weak light under the condition that the uplink light attenuation value is smaller than an uplink light attenuation threshold value.
In this embodiment of the present application, the uplink is a connection portion between the OLT and the optical splitter.
In this embodiment of the present application, the uplink light attenuation threshold is a set value, which can be flexibly adjusted according to an actual scene.
Illustratively, the uplink light attenuation threshold value is taken as an example. If the uplink light attenuation value is alpha-1, the OLT is proved to have abnormal light attenuation to the beam splitter part, namely uplink weak light; if the uplink light attenuation value is alpha+1, the OLT proves that the light attenuation of the optical splitter is normal, namely, the uplink weak light is not generated.
S103, determining the ONU with the downlink light attenuation value larger than or equal to the downlink light attenuation threshold value in at least one ONU as the weak light ONU.
In this embodiment of the present application, the drop connection is a connection portion between the optical splitter and the ONU.
In this embodiment of the present application, the downlink light attenuation threshold is a set value, which may be flexibly adjusted according to an actual scene.
Illustratively, the above-mentioned downlink light attenuation threshold is taken as β as an example. If the downlink light attenuation value is measured to be beta+1, proving that the ONU corresponding to the downlink light attenuation value is abnormal in light attenuation, namely the ONU is weak light ONU; if the downlink light attenuation value is measured to be beta-1, the ONU corresponding to the downlink light attenuation value is proved to be normal, namely the normal ONU.
In the optical attenuation fault detection method provided by the embodiment of the application, the spare interface of the optical splitter can be used for being connected with the detector, so that the uplink optical attenuation value from the OLT to the optical splitter can be directly obtained. The downlink light attenuation value of the optical splitter to each ONU is obtained, and then the uplink light attenuation value is compared with an uplink light attenuation threshold value to determine whether the uplink light attenuation value is uplink weak light; and determining the ONU with the downlink light attenuation value larger than or equal to the downlink light attenuation threshold value as a weak light ONU from all the ONUs connected by the optical splitter under the condition that the uplink weak light is not uplink weak light. The spare interface of the beam splitter can be used for being connected with the detector to respectively acquire the uplink light attenuation value and the downlink light attenuation value, so that the light attenuation fault condition is detected under the condition that the main interface is not disconnected (the use of a normal user is not influenced), and the detection efficiency is improved; meanwhile, when the downlink light attenuation value is acquired, the downlink light attenuation value of each ONU connected with the beam splitter is acquired and is respectively and independently judged, so that the accuracy of detecting the weak light ONU is further ensured on the basis of improving the detection efficiency.
Optionally, in this embodiment of the present application, as shown in fig. 5, the "acquiring, by using a detector, the downlink optical attenuation value from the optical splitter to the at least one optical network unit ONU" in step S101 may include the following steps S101a and S101b:
s101a, aiming at one ONU, acquiring the target distance from the optical splitter to the ONU by adopting a detector.
In the embodiment of the present application, the target distance refers to a transmission distance of an optical signal between the optical splitter and the ONU.
Illustratively, the target distance of the splitter to each ONU may be viewed from the screen of the detector.
S101b, calculating a downlink light attenuation value from the beam splitter to the ONU according to the target distance, the unit light attenuation value and the fixed light attenuation value.
In the embodiment of the present application, the unit light attenuation value is an attenuation value of the light signal within a unit distance.
Illustratively, the unit light attenuation values corresponding to the light signals of different wavelengths are different.
In this embodiment of the present application, the fixed light attenuation value is a wire loss value and/or a joint loss value.
Illustratively, the wire loss value is a sheath loss value connecting the optical splitter and each ONU.
The interface loss value is, for example, a loss value of each cold/hot joint to which the optical splitter and/or the ONU is connected.
Illustratively, the above-described downlink light attenuation value may be calculated by the formula (1) and the formula (2). The formula (1) and the formula (2) are as follows:
y=s×r formula (1)
Q=y+x formula (2)
Wherein Y is the light attenuation value within the target distance, S is the target distance, R is the unit light attenuation value, X is the fixed light attenuation value, and Q is the downlink light attenuation value.
Therefore, the distance from the optical splitter to each ONU is measured through the detector, the attenuation value of the optical signal in the distance is calculated according to the unit light attenuation value of the optical signal, and then the loss values of the sheath fiber and the joint are taken into consideration, so that the accuracy of the calculated downlink light attenuation value is ensured, and the accuracy of the follow-up judgment of the weak light ONU is ensured.
Alternatively, in the embodiment of the present application, as shown in fig. 6, the step S101a may include the following steps S101a1 to S101a3:
s101a1, at a first point in time, transmitting a first optical signal to the ONU using a detector.
In this embodiment of the present application, the wavelength of the first optical signal is set manually, which can be flexibly adjusted according to an actual scene.
Illustratively, the first optical signal may be an optical signal having a wavelength of 1550 nanometers (nm).
In this embodiment of the present application, the detector sends the first optical signal to all ONUs simultaneously and synchronously.
For example, at a first point in time, the detector may transmit an optical signal of 1550nm wavelength to the ONU connected to the respective port via each port of the optical splitter.
S101a2, recording a second time point when the second optical signal returned by the ONU is received.
In this embodiment of the present application, the wavelength of the second optical signal is set manually, which can be flexibly adjusted according to an actual scene.
The second optical signal may be an optical signal with a wavelength of 1310nm, for example.
For example, after the optical signal with the wavelength of 1550nm is sent by the detector, if the ONU receives the optical signal, the optical signal with the wavelength of 1310nm is returned to the splitter, and at this time, the detector records the time point when the optical signal with the wavelength of 1310nm is received.
S101a3, calculating a target distance from the splitter to the ONU based on the first time point, the second time point and the optical signal speed.
In this embodiment of the present application, the time difference between the sending of the first optical signal and the receiving of the second optical signal by the detector may be calculated according to the first time point and the second time point, and then the target distance may be calculated according to the time difference and the optical signal speed.
The above target distance can be calculated by, for example, the formula (3) and the formula (4). Equation (3) and equation (4) are as follows:
t＝t 2 -t 1 formula (3)
S=vt formula (4)
Wherein t is the time difference, t 2 For the second time point, t is 1 For the first time point, S is the target distance, and v is the optical signal speed.
The optical signal speed is the speed of light.
In this way, the detector sends the first optical signal to each ONU and receives the second optical signal returned by each ONU, and simultaneously records the sending time point and the receiving time point, thereby ensuring the accuracy of the calculated distance from the optical splitter to each ONU and further ensuring the accuracy of the follow-up judgment of the weak light ONU.
Optionally, in the embodiment of the present application, after step S101a1 described above, as shown in fig. 7, the method for detecting an optical attenuation fault provided in the embodiment of the present application may further include the following step S104 and step S105:
s104, determining the port of the optical splitter receiving the second optical signal returned by the ONU as an occupied port.
In this embodiment of the present application, the splitter port is used to connect to an ONU.
It should be noted that one optical splitter includes a plurality of splitter ports, and one splitter port is connected to one ONU.
In this embodiment of the present application, after the detector sends the first optical signal to each optical splitter port, if the optical splitter port is connected to an ONU, the ONU will automatically return to the second optical signal after receiving the first optical signal, and after receiving the second optical signal, the detector will determine the optical splitter port connected to the ONU as an occupied port, that is, the port is indicated to be unusable again.
S105, determining the port of the optical splitter, which does not receive the second optical signal returned by the ONU, as an unoccupied port.
In this embodiment of the present application, after the detector sends the first optical signal to each optical splitter port, if the optical splitter port is not connected to the ONU, the detector does not receive the second optical signal returned by the ONU, and at this time, the optical splitter port that does not receive the second optical signal is determined to be an unoccupied port, that is, the port is indicated to be used for the old purpose.
In addition, after detecting that a port can be used for utilization, it is also necessary to verify with the resource system and install the use with the port when it is determined that the port can be used for utilization.
Therefore, the occupation condition of the ports of the optical splitter is determined by judging whether the optical signals returned by the ONU are received after the detector sends the optical signals to the ONU, and the on-site investigation of maintenance personnel is not needed, so that the detection efficiency is improved.
Alternatively, in the embodiment of the present application, as shown in fig. 8, the step S101 may further include the following steps S101c and S101d:
s101c, receiving a third optical signal by using a detector.
In this embodiment of the present application, the third optical signal is a signal after the initial optical signal sent by the OTL is transmitted to the detector.
The third optical signal after decay of the initial optical signal from the OTL may be received by the detector via a spare interface of the optical splitter, for example.
S101d, calculating an uplink light attenuation value according to the initial light signal and the third light signal.
In this embodiment of the present application, after receiving the third optical signal after decay, the attenuation value of the initial optical signal from the OTL to the optical splitter may be calculated according to the initial optical signal sent by the OTL.
The attenuation value may be read directly from the screen of the beam splitter, for example.
In addition, after the attenuation value is obtained, the time division multiplexing technology can be used for dividing the data sending time slot for each ONU under the same OTL, and the ports of each optical splitter are sequenced and numbered according to the time sequence so as to facilitate the subsequent distinction of the ports.
Therefore, after the detector is connected with the beam splitter through the standby interface, the light attenuation condition from the OTL to the beam splitter can be directly measured on the premise of not influencing the use of a normal user, and the user experience and the user perception are optimized.
Optionally, in the embodiment of the present application, as shown in fig. 9, the overall implementation flow of the optical attenuation fault detection method provided in the embodiment of the present application may be implemented by the following steps:
and P1, measuring the whole optical attenuation value of the ONU.
The above-mentioned integral light decay value may be measured directly by the system, for example.
And P2, judging whether the integral light attenuation value of the ONU is smaller than an integral light attenuation threshold value. If not, the whole light attenuation is normal; if yes, the whole light attenuation is abnormal, and the step P3 is executed.
And P3, the detector receives the optical signal sent by the OLT and measures the uplink optical attenuation value.
The detector is illustratively connected through a back-up interface of the splitter.
And P4, judging whether the uplink light attenuation value is smaller than an uplink light attenuation threshold value. If yes, indicating that the uplink light attenuation is abnormal; if not, indicating that the downlink light attenuation is abnormal, and executing the step P5.
And P5, arranging the serial numbers of the ports of the optical splitters according to the time sequence.
For example, a time division multiplexing technology may be used to separate the transmission data slots for each ONU under the same OTL, and then the port numbers of the optical splitters are arranged in time sequence.
And P6, calculating the target distance from the optical splitter to the ONU.
And P7, calculating the light attenuation value of the peripheral section according to the target distance and the unit light attenuation value.
The above-mentioned light attenuation value of the end section is exemplified as the light attenuation value from the splitter to the ONU section.
And P8, judging whether the light attenuation value of the tip section is smaller than a tip Duan Guangcui threshold value. If yes, indicating that the light attenuation of the peripheral section is normal; if not, the light attenuation of the tip section is abnormal, and the step P9 is executed.
And P9, judging whether the port of the optical splitter receives the optical signal returned by the ONU. If yes, the port is occupied; if not, the port is unoccupied.
The embodiment of the application may divide the functional modules or functional units of the light attenuation fault detection device according to the above method examples, for example, each functional module or functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated modules may be implemented in hardware, or in software functional modules or functional units. The division of the modules or units in the embodiments of the present application is merely a logic function division, and other division manners may be implemented in practice.
Fig. 10 is a schematic structural diagram of an optical attenuation fault detection device according to an embodiment of the present application, where the device includes: an acquisition unit 201 and a determination unit 202.
The acquiring unit 201 is configured to acquire an uplink light attenuation value from the optical line terminal OLT to the optical splitter and a downlink light attenuation value from the optical splitter to at least one optical network unit ONU by using a detector, where the optical splitter includes a main interface and a standby interface, and the detector is connected to the optical splitter through the standby interface; the determining unit 202 is configured to determine an uplink weak light, where the uplink is a connection portion between the OLT and the optical splitter, when the uplink light attenuation value acquired by the acquiring unit 201 is less than an uplink light attenuation threshold value; the determining unit 202 is configured to determine, as a weak-light ONU, an ONU having a downlink light attenuation value greater than or equal to a downlink light attenuation threshold value, which is acquired by the acquiring unit 201, among the at least one ONU, where the downlink is a connection location between the optical splitter and the ONU.
Alternatively, in the embodiment of the present application, the above-mentioned obtaining unit 201 is specifically configured to: aiming at one ONU, the detector is adopted to acquire the target distance from the beam splitter to the ONU; and calculating a downlink light attenuation value from the optical splitter to the ONU according to the target distance, a unit light attenuation value of the second optical signal and a fixed light attenuation value, wherein the unit light attenuation value is an attenuation value of the optical signal in the unit distance, and the fixed light attenuation value is a wire loss value and/or a joint loss value.
Alternatively, in the embodiment of the present application, the above-mentioned obtaining unit 201 is specifically configured to: at a first time point, transmitting a first optical signal to the ONU by adopting the detector; recording a second time point when a second optical signal returned by the ONU is received; and calculating the target distance from the detector to the ONU based on the first time point, the second time point and the optical signal speed.
Optionally, in an embodiment of the present application, the determining unit 202 is further configured to: after the acquiring unit 201 transmits the first optical signal to the ONU with the detector at the first time point, the method further includes: determining an optical splitter port which receives the second optical signal returned by the ONU as an occupied port; and determining the port of the optical splitter, which does not receive the second optical signal returned by the ONU, as an unoccupied port.
Alternatively, in the embodiment of the present application, the above-mentioned obtaining unit 201 is specifically configured to: receiving a third optical signal by using the detector, wherein the third optical signal is a signal transmitted by the OTL after the initial optical signal is transmitted to the optical splitter; and calculating the uplink light attenuation value according to the initial light signal and the third light signal.
In the optical attenuation fault detection device provided by the embodiment of the application, the spare interface of the optical splitter can be used for being connected with the detector, and the uplink optical attenuation value from the OLT to the optical splitter can be directly obtained. The downlink light attenuation value of the optical splitter to each ONU is obtained, and then the uplink light attenuation value is compared with an uplink light attenuation threshold value to determine whether the uplink light attenuation value is uplink weak light; and determining the ONU with the downlink light attenuation value larger than or equal to the downlink light attenuation threshold value as a weak light ONU from all the ONUs connected by the optical splitter under the condition that the uplink weak light is not uplink weak light. The spare interface of the beam splitter can be used for being connected with the detector to respectively acquire the uplink light attenuation value and the downlink light attenuation value, so that the light attenuation fault condition is detected under the condition that the main interface is not disconnected (the use of a normal user is not influenced), and the detection efficiency is improved; meanwhile, when the downlink light attenuation value is acquired, the downlink light attenuation value of each ONU connected with the beam splitter is acquired and is respectively and independently judged, so that the accuracy of detecting the weak light ONU is further ensured on the basis of improving the detection efficiency.
Fig. 11 shows still another possible structural schematic diagram of the light-failure detection apparatus involved in the above-described embodiment. The light attenuation fault detection device comprises: a processor 302 and a communication interface 303. The processor 302 is configured to control and manage the actions of the light failure detection device, for example, to perform the steps performed by the acquisition unit 201 and the determination unit 202 described above, and/or to perform other processes of the techniques described herein. The communication interface 303 is used to support communication of the light failure detection device with other network entities. The light failure detection means may further comprise a memory 301 and a bus 304, the memory 301 being arranged to store program code and data of the light failure detection means.
Wherein the memory 301 may be a memory or the like in the light-failure detection device, which may include a volatile memory, such as a random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, hard disk or solid state disk; the memory may also comprise a combination of the above types of memories.
The processor 302 described above may be implemented or executed with various exemplary logic blocks, modules and circuits described in connection with this disclosure. The processor may be a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules, and circuits described in connection with this disclosure. The processor may also be a combination that performs the function of a computation, e.g., a combination comprising one or more microprocessors, a combination of a DSP and a microprocessor, etc.
Bus 304 may be an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus or the like. The bus 304 may be classified as an address bus, a data bus, a control bus, or the like. For ease of illustration, only one thick line is shown in FIG. 11, but not only one bus or one type of bus.
From the foregoing description of the embodiments, it will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of functional modules is illustrated, and in practical application, the above-described functional allocation may be implemented by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to implement all or part of the functions described above. The specific working processes of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which are not described herein.
Embodiments of the present application provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform the light failure detection method of the method embodiments described above.
The embodiment of the application also provides a computer readable storage medium, wherein the computer readable storage medium stores instructions, and when the instructions run on a computer, the instructions cause the computer to execute the light attenuation fault detection method in the method flow shown in the method embodiment.
The computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access Memory (Random Access Memory, RAM), a Read-Only Memory (ROM), an erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), a register, a hard disk, an optical fiber, a portable compact disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing, or any other form of computer readable storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an application specific integrated circuit (Application Specific Integrated Circuit, ASIC). In the context of the present application, a computer-readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
Embodiments of the present invention provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform the light failure detection method as described in fig. 2 and fig. 5 to 9.
Since the light attenuation fault detection device, the computer readable storage medium and the computer program product in the embodiments of the present invention can be applied to the above method, the technical effects obtained by the method can also refer to the above method embodiments, and the embodiments of the present invention are not described herein again.
In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, indirect coupling or communication connection of devices or units, electrical, mechanical, or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (12)
1. A method for detecting an optical attenuation fault, the method comprising:
acquiring an uplink light attenuation value from an Optical Line Terminal (OLT) to an optical splitter and a downlink light attenuation value from the optical splitter to at least one Optical Network Unit (ONU) by using a detector, wherein the optical splitter comprises a main interface and a standby interface, and the detector is connected with the optical splitter through the standby interface;
Determining uplink weak light under the condition that the uplink light attenuation value is smaller than an uplink light attenuation threshold value, wherein the uplink light is the connection part of the OLT and the beam splitter;
and determining the ONU with the downlink light attenuation value larger than or equal to a downlink light attenuation threshold value in the at least one ONU as a weak light ONU, wherein the downlink is the connection part of the optical splitter and the ONU.
2. The method according to claim 1, wherein said obtaining, with a detector, a downstream optical attenuation value of the optical splitter to at least one optical network unit ONU comprises:
aiming at an ONU, acquiring a target distance from the beam splitter to the ONU by adopting the detector;
and calculating a downlink light attenuation value from the optical splitter to the ONU according to the target distance, the unit light attenuation value and the fixed light attenuation value, wherein the unit light attenuation value is an attenuation value of the optical signal in the unit distance, and the fixed light attenuation value is a wire loss value and/or a joint loss value.
3. The method of claim 2, wherein the obtaining, with the detector, the target distance of the splitter to the ONU comprises:
at a first time point, transmitting a first optical signal to the ONU by adopting the detector;
Recording a second time point when a second optical signal returned by the ONU is received;
and calculating the target distance from the optical splitter to the ONU based on the first time point, the second time point and the optical signal speed.
4. The method of claim 3, wherein after the first optical signal is transmitted to the ONU with the detector at the first point in time, the method further comprises:
determining an optical splitter port which receives the second optical signal returned by the ONU as an occupied port;
and determining the port of the optical splitter, which does not receive the second optical signal returned by the ONU, as an unoccupied port.
5. The method according to claim 1, wherein the obtaining, by using a detector, an uplink light attenuation value from the OLT to the splitter includes:
receiving a third optical signal by adopting the detector, wherein the third optical signal is a signal transmitted to the optical splitter by the initial optical signal sent by the OTL;
and calculating the uplink light attenuation value according to the initial light signal and the third light signal.
6. An optical attenuation fault detection device, characterized in that the device comprises: an acquisition unit and a determination unit, wherein:
The acquisition unit is used for acquiring an uplink light attenuation value from the optical line terminal OLT to the optical splitter and a downlink light attenuation value from the optical splitter to at least one optical network unit ONU by adopting a detector, wherein the optical splitter comprises a main interface and a standby interface, and the detector is connected with the optical splitter through the standby interface;
the determining unit is configured to determine uplink weak light when the uplink light attenuation value acquired by the acquiring unit is smaller than an uplink light attenuation threshold, where the uplink is a connection part between the OLT and the optical splitter;
and the determining unit is used for determining the ONU, of the at least one ONU, for which the downlink light attenuation value acquired by the acquiring unit is greater than or equal to a downlink light attenuation threshold value, as a weak light ONU, wherein the downlink is the connection part of the optical splitter and the ONU.
7. The apparatus of claim 6, wherein the device comprises a plurality of sensors,
the acquisition unit is specifically configured to:
aiming at an ONU, acquiring a target distance from the beam splitter to the ONU by adopting the detector;
and calculating a downlink light attenuation value from the optical splitter to the ONU according to the target distance, the unit light attenuation value of the second optical signal and the fixed light attenuation value, wherein the unit light attenuation value is an attenuation value of the optical signal in the unit distance, and the fixed light attenuation value is a wire loss value and/or a joint loss value.
8. The apparatus of claim 7, wherein the device comprises a plurality of sensors,
the acquisition unit is specifically configured to:
at a first time point, transmitting a first optical signal to the ONU by adopting the detector;
recording a second time point when a second optical signal returned by the ONU is received;
and calculating the target distance from the optical splitter to the ONU based on the first time point, the second time point and the optical signal speed.
9. The apparatus of claim 8, wherein the device comprises a plurality of sensors,
the determining unit is further configured to:
after the acquisition unit sends a first optical signal to the ONU by adopting the detector at a first time point, determining a beam splitter port which receives the second optical signal returned by the ONU as an occupied port;
and determining the port of the optical splitter, which does not receive the second optical signal returned by the ONU, as an unoccupied port.
10. The apparatus of claim 6, wherein the device comprises a plurality of sensors,
the acquisition unit is specifically configured to:
receiving a third optical signal by adopting the detector, wherein the third optical signal is a signal transmitted to the optical splitter by the initial optical signal sent by the OTL;
and calculating the uplink light attenuation value according to the initial light signal and the third light signal.
11. An optical attenuation fault detection device, comprising: a processor and a communication interface; the communication interface being coupled to the processor for running a computer program or instructions to implement the light failure detection method according to any of claims 1-5.
12. A computer readable storage medium having instructions stored therein, characterized in that when executed by a computer, the computer performs the light failure detection method of any of the preceding claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311389368.7A CN117439667A (en) | 2023-10-24 | 2023-10-24 | Light attenuation fault detection method, device and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311389368.7A CN117439667A (en) | 2023-10-24 | 2023-10-24 | Light attenuation fault detection method, device and storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117439667A true CN117439667A (en) | 2024-01-23 |
Family
ID=89557817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311389368.7A Pending CN117439667A (en) | 2023-10-24 | 2023-10-24 | Light attenuation fault detection method, device and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117439667A (en) |
-
2023
- 2023-10-24 CN CN202311389368.7A patent/CN117439667A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3908703B2 (en) | System for optical network testing using OTDR | |
| JP5463360B2 (en) | Method and apparatus for deriving optical path and wavelength dependent reflective element parameters in an optical network using dual wavelength OTDR | |
| EP2656515B1 (en) | Otdr trace analysis in pon systems | |
| US9281892B2 (en) | OTDR trace analysis in PON systems | |
| EP2882114B1 (en) | Life-cycle management of faults occuring on optical fibres | |
| CN111130636B (en) | Optical distribution device, optical communication detection system and optical communication detection method | |
| EP3985886A1 (en) | Tunable dense wavelength division multiplexing (dwdm) optical time-domain reflectometer (otdr)-based optical fiber monitoring | |
| EP2903182B1 (en) | Diagnosing faults in optical networks | |
| CN117439667A (en) | Light attenuation fault detection method, device and storage medium | |
| CN115133983B (en) | Communication link determination method, system, device and electronic equipment | |
| US7522835B1 (en) | Method of testing bit error rates for a wavelength division multiplexed optical communication system | |
| CN111064507A (en) | Method and device for detecting length of optical fiber link and terminal equipment | |
| CN101908928B (en) | Automatic monitoring and fault positioning system of single-fiber three-way multiplexer | |
| CN108692746B (en) | Sensing monitoring terminal, sensing monitoring system and sensing monitoring method | |
| CN114696898B (en) | Risk identification method and related device | |
| CN106712843A (en) | Optical fiber line performance assessment method and system | |
| CN110213681A (en) | Mix the management method and device of ONU critical to optical power in PON system | |
| CN117394912A (en) | Method and device for determining fault point of optical cable fiber core and nonvolatile storage medium | |
| CN110505012B (en) | Method and device for judging bottleneck of wavelength division system | |
| JP7501781B2 (en) | Optical fiber path testing system, optical fiber path testing method, operation terminal device, and program | |
| WO2024140508A1 (en) | Network maintenance method, communication apparatus, and storage medium | |
| TWI684335B (en) | Method and system for faults detection in passive optical network | |
| CN116910313A (en) | Database establishment method and device and electronic equipment | |
| CN115514412A (en) | Optical fiber testing system, method, electronic device and storage medium | |
| KR20230111983A (en) | Device for predicting momentary breakoff of transport network and method of operation thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |