CN115276783B - Forward optical module WDM equipment and network management method thereof - Google Patents
Forward optical module WDM equipment and network management method thereof Download PDFInfo
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- 238000007726 management method Methods 0.000 title claims description 24
- 238000012544 monitoring process Methods 0.000 claims abstract description 81
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- 238000000253 optical time-domain reflectometry Methods 0.000 claims description 35
- 238000012545 processing Methods 0.000 claims description 14
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- 230000001960 triggered effect Effects 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 abstract description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/032—Arrangements for fault recovery using working and protection systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/038—Arrangements for fault recovery using bypasses
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—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
- H04B10/0791—Fault location on the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—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
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Abstract
The application discloses a WDM system of a front-end optical module, which comprises: a plurality of remote optical modules; the passive WDM module comprises a far-end multiplexing/demultiplexing unit and is used for multiplexing or demultiplexing light transmitted between a plurality of passive light branches corresponding to the plurality of far-end optical modules and a light main link; a plurality of local side optical modules; and an active WDM module comprising: the near-end combining and dividing unit is used for combining or dividing light transmitted between a plurality of active light branches corresponding to the local side optical modules and the light main link; and the optical power monitoring unit is respectively connected with the light main link and the active light branches for light receiving monitoring. The method can solve the problem that the network management misreads and does not execute protection switching because of reflection loss of the local side signal at the break point of the main link or the problem that the remote light reduces the trigger protection threshold when the main link optical fiber link is intact to cause the misregistration in the existing semi-active system.
Description
Technical Field
The application relates to the technical field of optical communication of 4G/5G network forward/mid-transmission/return, in particular to semi-active WDM equipment and a network management logic algorithm.
Background
With the evolution of operator office station deployment from D-RAN (Distributed radio access network) to C-RAN (Centralized radio access network), the technology of 5G forwarding also evolves from the traditional grey light direct drive scheme to passive WDM (WAVELENGTH DIVISION MULTIPLEXING ) and semi-active WDM schemes, and the semi-active WDM far end does not need to be powered, so that the link protection and monitoring functions are introduced, and is increasingly being sought after by operators.
The semi-active WDM scheme is currently in the high-speed development period of technology and application, the industrial chain is on a first scale, and the industrial application is gradually followed; the semi-active WDM scheme has the main advantages of link protection and monitoring, wherein the link protection is generally realized by adding a protection link and arranging an optical switch switching link on a local end board, so that the application requirements can be met at present; however, the application of the semi-active scheme monitoring function is still in the development stage of the current equipment and network management development, and is difficult to compare with the mature communication equipment.
Most of the existing semi-active WDM equipment boards support link protection, namely when a certain link fails, the existing semi-active WDM equipment boards can detect and switch to a protection link through a monitoring PD of a trunk, so that continuity of service is realized; however, the existing semi-active device and network management logic have the following defects in practical application:
(1) The method is not very good for obstacle removal positioning; although the service board card of the semi-active device can be switched to the protection link quickly, there is no good method for locating the breakpoint. The monitoring center, the forward DU/BBU office station and the remote AAU station are all at a certain distance, so that the fault clearing and positioning are inconvenient and intelligent, and an operation and maintenance person is required to find out the fault service unit on site in the office machine room, use OTDR equipment to clear the fault and position, and then go to the breakpoint to check and solve; the barrier removal time is long and the efficiency is low;
(2) There is no good method for expanding business; if the current forwarding service relates to service upgrading or scheme changing, the current forwarding service can only be realized by replacing the board card; thus, the service interruption is caused;
(3) The semi-active network manager generates a breakpoint in the main link, and when a fault occurs, the network manager misreads caused by reflection and return loss of a local side signal at the breakpoint, so that the fault can not be reported necessarily;
(4) The existing semi-active network management is not clear enough for fault positioning, and the alarm dyeing functions of the rest mature equipment are not or incompletely provided; alarm staining logic based on OAM information is lacking.
Disclosure of Invention
Aiming at least one defect or improvement requirement of the prior art, the invention provides a forward optical module WDM system, equipment and a network management method, which aim to solve the problem that the network management is not performed for protection switching due to misread caused by reflection loss of local side signals at a breakpoint of a main link or the problem that the error switching is caused by remote light reduction triggering protection threshold when a main link optical fiber link is intact in the existing semi-active system.
To achieve the above object, according to a first aspect of the present invention, there is provided a front-end optical module WDM system comprising: a plurality of remote optical modules; the passive WDM module comprises a far-end multiplexing/demultiplexing unit and is used for multiplexing or demultiplexing light transmitted between a plurality of passive light branches corresponding to the plurality of far-end optical modules and a light main link; a plurality of local side optical modules; and an active WDM module comprising: the near-end combining and dividing unit is used for combining or dividing light transmitted between a plurality of active light branches corresponding to the local side optical modules and the light main link; and the optical power monitoring unit is respectively connected with the light main link and the active light branches for light receiving monitoring.
In one embodiment of the present invention, the near-end multiplexer/demultiplexer unit includes: and the OTDR monitoring interface is connected to the light main link through a corresponding optical monitoring wave plate and is used for supporting connection with an OTDR functional board card to realize OTDR fault monitoring.
In one embodiment of the present invention, the near-end multiplexer/demultiplexer unit includes: at least two main link optical interfaces respectively connected with at least two paths of the light main links backed up mutually; the MEMS optical switches are respectively connected to the at least two main link optical interfaces and are used for switching and connecting to the standby light main links when the protection switching condition is triggered; the branch optical interfaces are respectively connected with the corresponding light branches; the plurality of light splitting wave plates and the plurality of light receiving wave plates are connected to the MEMS optical switch after being sequentially cascaded and used for receiving main-link light rays and sending the main-link light rays to the corresponding branch optical interfaces after being separated according to the wavelength, or sending the main-link light rays to the light ray after receiving the plurality of branch light rays with the corresponding wavelength; and the plurality of light splitting detectors are respectively connected with the main link optical interfaces and the branch optical interfaces and are used for detecting the optical power of the corresponding light main link and the light branch.
In one embodiment of the present invention, the near-end multiplexer/demultiplexer unit further includes: and the cascade expansion interface is cascaded with the plurality of light splitting wave plates and the plurality of light combining wave plates and is used for supporting cascade access of a service board card comprising a plurality of light branches. Preferably, the cascade expansion interface is located at the last stage of the cascade structure.
In one embodiment of the present invention, the OTDR function board includes: an OTDR module and a MEMS optical switch connected with the OTDR module; and the service boards are connected to the MEMS optical switch after being cascaded through the cascade expansion interfaces respectively, so that the OTDR monitoring interfaces of the service boards share the OTDR functional board, and fault monitoring is carried out on the service boards.
According to a second aspect of the present invention, there is further provided a WDM network management method for a front optical module, which is applicable to the WDM system for a front optical module described in any one of the foregoing embodiments, and includes: collecting the optical power monitoring value of the far-end incoming light at each light branch side of an active WDM module; if the optical power monitoring values of all the optical branches of the active WDM module are reduced to a preset threshold value, determining that a breakpoint exists in the current main link of the active WDM module, and executing protection switching to a standby main link; if the optical power monitoring value of any one of the collected optical branches is not reduced to the preset threshold value, the current main link of the active WDM module is not damaged, and the switching is not executed.
In one embodiment of the present invention, the WDM network management method of the optical add/drop module further includes: respectively analyzing OAM signals of a light receiving branch and a light transmitting branch of a local side optical module of the active WDM module to obtain corresponding optical power monitoring values; and judging the fault point position of the optical module or the optical link in the front optical module WDM system according to the optical power monitoring value.
In one embodiment of the present invention, the determining, according to the optical power monitoring value, a fault point position of an optical module or an optical link in the front optical module WDM system includes: when the OAM information of the local optical module is that the local received optical power is-40 dBm and the emitted optical power is normal, the far-end received optical power and the emitted optical power are both-40 dBm, the optical power monitoring value of the far-end optical module corresponding to the wave channel is-40 dBm, and the optical power monitoring value of the local optical module corresponding to the wave channel is normal, judging that the emitting link of the far-end optical module is faulty; when the local end receiving and emitting power is normal, the far end emitting light power is normal, the receiving light power is-40 dBm, and the light power monitoring values of the corresponding channels of the far end light module and the local end light module are normal, judging the receiving link fault of the far end light module; when the OAM information of the local optical module is normal in local transmitting optical power, the receiving optical power is-40 dBm, the far-end receiving optical power and the light-emitting optical power are-40 dBm, and the optical power monitoring value of the local optical module corresponding to the channel is normal, judging that the main link fails; when the OAM information of the local optical module is that the local received optical power is-40 dBm, the emitted optical power is normal, the far-end received optical power and the emitted optical power are both-40 dBm, and the optical power monitoring value of the corresponding channel of the far-end optical module is normal, judging that the receiving link of the local optical module has fault; and judging that the transmitting link of the local optical module fails when the OAM information of the local optical module has the local receiving and the light emitting power of-40 dBm and the remote receiving and the light emitting power of-40 dBm and the light power monitoring value of the corresponding channel of the local optical module is-40 dBm.
According to a third aspect of the present invention there is also provided an electronic device comprising at least one processing unit and at least one storage unit, wherein the storage unit stores a computer program which, when executed by the processing unit, causes the processing unit to perform the steps of the method according to any of the embodiments described above.
According to a fourth aspect of the present invention there is also provided a computer readable storage medium storing a computer program executable by an access authentication device, the computer program, when run on the access authentication device, causing the access authentication device to perform the steps of the method of any one of the embodiments above.
In general, compared with the prior art, the above technical solutions conceived by the present invention can achieve at least the following beneficial effects:
1) By adding the light splitting judgment of each branch on the breakpoint fault judgment logic of the main link, the network management misreading risk caused by reflection loss of the semi-active local side only through the light splitting judgment of the main link is solved, meanwhile, the problem that when a certain part of the light modules in the far-end light source fails, the far-end light source reduces to trigger the main link switching threshold is avoided, and the risk of misregistration when the main link is intact is eliminated;
2) The reserved cascade expansion interface and the OTDR monitoring interface are added on the system hardware architecture, so that the cascade of similar/heterogeneous business/function boards can be supported, the function expansibility and compatibility of equipment are improved, corresponding business boards can be newly added on the premise of not off-line original business boards along with the increase of business, monitoring function boards such as OTDR and the like can be supported, the investment of users can be effectively protected, and a method for providing remote obstacle-removing positioning is supported;
3) The alarm dyeing processing logic is provided, based on OAM signals and PD monitoring values analyzed by the semi-active local side optical module, the position of a fault point of the optical module or each link can be remotely and accurately judged, and the alarm dyeing processing logic is visually and visually displayed on a network management operation and maintenance monitoring interface, so that the remote intelligent operation and maintenance can be realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a WDM system with a front-end optical module according to an embodiment of the present application;
Fig. 2 is a schematic structural diagram of an active WDM module according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of WDM equipment with a front-end optical module according to an embodiment of the present application;
Fig. 4 is a flowchart of a WDM network management method for a front-end optical module according to an embodiment of the present application;
Fig. 5 is a logic schematic diagram of a WDM network management method for a front-end optical module according to an embodiment of the present application.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The terms first, second, third and the like in the description and in the claims and in the above drawings, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, 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 steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1, a first embodiment of the present invention proposes a WDM system of a front-end optical module, for example, including: the system comprises a plurality of far-end optical modules, a passive WDM (WAVELENGTH DIVISION MULTIPLEXING ) module, a plurality of local-end optical modules and an active WDM module.
The passive WDM module comprises a far-end combining and splitting unit, and is used for combining or splitting light transmitted between a plurality of passive light branches corresponding to the plurality of far-end optical modules and a light main link. The active WDM module comprises a near-end combining and splitting unit and an optical power monitoring unit, wherein the near-end combining and splitting unit is used for combining or splitting light transmitted between a plurality of active light branches corresponding to the local optical modules and a light main link, and the optical power monitoring unit is respectively connected with the light main link and the plurality of active light branches for light receiving monitoring.
Specifically, as shown in fig. 2, the near-end multiplexer/demultiplexer unit includes, for example: at least two main link optical interfaces are respectively connected with at least two light main links backed up mutually, for example, the COM interface is normally connected with the current main link, and when the breakpoint exists in the current main link, protection switching is performed to the PRO interface, and the standby main link is connected to realize service continuity. And the MEMS optical switches are respectively connected to at least two main link optical interfaces and are used for controlling link switching when the protection switching condition is triggered. And the branch optical interfaces are respectively connected with the corresponding light branches. The light receiving wave plates are used for receiving the plurality of branch light rays with corresponding wavelengths and sending the branch light rays to the light main links. And the plurality of light splitting detectors are respectively connected with the main link optical interfaces and the branch optical interfaces and are used for detecting the optical power of the corresponding light main link and the light branch.
The following describes the beneficial effects of performing a main link breakpoint determination in the WDM system with a front-end optical module according to the present embodiment in combination with the prior art:
The existing switching logic of the semi-active network management is realized by monitoring the power of the main link, and the power actually reaching the monitoring end is about-5 dBm due to 50% of the loss of light splitting and transmission distance at the far end; in order to avoid the reduction of main optical power caused by the failure of part of far-end optical modules (failure of all optical modules) when the main link is intact, and further trigger protection switching, the existing switching threshold is set to be lower, generally about-15 dBm, and the threshold and the reflection return loss of the combined wave big light at the local side at the break point are at the same power level, so that the service interruption caused by the non-protection switching is very easy to occur.
In combination with fig. 2, in the prior art scheme, for example, whether the main link fails or not is determined only by receiving light by the PD 1, but there are the logic defects described above, that is, reflection loss of the local side big light at the breakpoint and far-end incoming light are in the same order of magnitude, so that misjudgment is very easy to cause non-switching, and further actual service is interrupted; or when some optical module failure in all the optical modules at the far end causes the far end light to decrease to trigger the PD 1 switching threshold, the switching is performed by mistake when the main link is intact.
The main link switching logic in this embodiment adopts branch side monitoring and determination, for example, a main control board collects the monitoring value of the far-end incoming light on the PD4/PD6/PD8 of the branch side, if the collected monitoring value of the PD4/PD6/PD8 is reduced to a preset threshold value, for example, -40dBm (approximately without optical input), the current main link of COM interface connection is determined to have a breakpoint, and protection switching is executed; if the monitoring value of the PD4/PD6/PD8 collected by the main control board is not completely reduced to-40 dB, as long as any far-end incoming light is normal and has no obvious fluctuation, the current main link is considered to be normal and not damaged, and the switching is not executed, so that the problems caused by the two conditions are thoroughly avoided.
Further, the near-end multiplexer/demultiplexer unit further includes: and the OTDR monitoring interface is connected with a corresponding optical monitoring wave plate (such as lambda 0 wave plate in figure 2), is cascaded with a plurality of light splitting wave plates and a plurality of light receiving wave plates, is positioned at a first stage and is used for supporting connection with an OTDR functional board card and realizing OTDR fault monitoring. Therefore, the remote breakpoint obstacle removal of the main link can be supported through the application of the OTDR function in the WDM system, and the problem that time and labor are consumed due to faults is solved by avoiding operation and maintenance staff to reach the office station to go to the breakpoint after the on-site obstacle removal and positioning.
Further, the near-end multiplexer/demultiplexer unit further includes: and the cascade expansion interface is cascaded with the plurality of light splitting wave plates and the plurality of light receiving wave plates, and is preferably positioned at the last stage of the cascade structure and used for supporting cascade access of the service board card comprising a plurality of light branches. The cascade expansion interface supports the cascade access of the service boards of different schemes besides supporting the service boards of different wavelengths of the same scheme; for example, the CWDM6 wave realizes 12 wave service through the cascaded 6 wave board card, and LWDM wave realizes 18 wave service through the cascaded 6 wave CWDM board card. Therefore, the reserved expansion interface is added on the hardware architecture of the equipment to support the cascade connection of the same kind/different kinds of service/function boards, the function expansibility and compatibility of the equipment are improved, and corresponding service boards can be newly added on the premise of not off-line of the original service boards along with the increase of the service.
Referring to fig. 3, the OTDR functional board card includes, for example, an OTDR module and a MEMS optical switch connected to the OTDR module; the service boards are connected to the MEMS optical switch after being cascaded through the cascade expansion interfaces respectively, for example, as shown in 8 service boards in fig. 3, and correspondingly connected to 1: and 8, the MEMS optical switch enables each service board card to share an OTDR function board card through an OTDR monitoring interface of the service board card, namely the same active WDM module comprises a plurality of cascaded service board cards, and the corresponding optical main link and the MEMS optical switch are shared, so that fault monitoring of each service board card is realized. Of course, in other embodiments, for a plurality of active WDM modules, the corresponding plurality of service cards are not cascaded, and are respectively transmitted through respective optical main links, and the plurality of service cards of the plurality of active WDM modules may also share the MEMS optical switch and the OTDR device through their own OTDR monitoring interfaces. As one step, the investment of users can be reduced, and the utilization rate of equipment can be improved. It should be noted that the OTDR monitoring function may be integrated in the semi-active WDM system and exist in the form of a functional board card, or may be implemented by an independent external OTDR device through a manner of switching an optical switch to monitor OTDR ports of the semi-active different service boards.
As shown in fig. 4, the third embodiment of the present invention further provides a WDM network management method for a front-end optical module, for example, including: step S1, collecting the optical power monitoring value of the far-end incoming light at each light branch side of an active WDM module; step S2, if the optical power monitoring values of all the optical branches of the active WDM module are reduced to a preset threshold value, determining that a breakpoint exists in the current main link of the active WDM module, and executing protection switching to a standby main link; and step S3, if the optical power monitoring value of any one of the collected optical branches is not reduced to the preset threshold value, the current main link of the active WDM module is not damaged, and the switching is not executed.
Further, the WDM network management method of the forwarding optical module further includes: respectively analyzing OAM signals of a light receiving branch and a light transmitting branch of a local side optical module of the active WDM module to obtain corresponding optical power monitoring values; and judging the fault point position of the optical module or the optical link in the front optical module WDM system according to the optical power monitoring value.
Further, as shown in fig. 5, in the OAM information of the far-end optical module b, the fault determination logic of the transmitting link (position ①) of the far-end optical module is that the local-end received optical power is-40 dBm, the transmitting optical power is normal, and the far-end received optical power and the transmitting optical power are both-40 dBm; the PD monitoring value of the channel corresponding to the far-end optical module a is-40 dBm, and the PD monitoring value of the channel corresponding to the local-end optical module b is normal.
The fault judgment logic of the receiving link (position ②) of the far-end optical module is that the local receiving and luminous power in OAM information of the local-end optical module b is normal, the far-end transmitting optical power is normal, and the receiving optical power is-40 dBm; and PD monitoring values of the channels corresponding to the far-end optical module a and the local-end optical module b are normal.
The judging logic of the main link (position ③) fault is that the local terminal transmitting optical power of OAM information of all local terminal optical modules b is normal, the receiving optical power is-40 dBm, and the far-end receiving and light-emitting power is-40 dBm; the PD monitoring value of the channel corresponding to the far-end optical module a is-40 dBm, and the PD monitoring value of the channel corresponding to the local-end optical module b is normal.
The judging logic of the fault of the receiving link (position ④) of the local side optical module is that the local side receiving optical power is-40 dBm and the transmitting optical power is normal in OAM information of the local side optical module b, and the far-end receiving optical power and the far-end transmitting optical power are-40 dBm; the PD monitoring value of the corresponding channel of the far-end optical module a is normal.
The judging logic of the fault of the transmitting link (position ⑤) of the local side optical module is that the local side receiving and light emitting power in OAM information of the local side optical module b is-40 dBm, and the remote side receiving and light emitting power is-40 dBm; the PD monitoring value of the corresponding channel of the local side optical module b is-40 dBm.
Therefore, by combining OAM information and PD monitoring optical power values, a set of alarm dyeing logic capable of determining fault points more accurately is defined, and the alarm dyeing logic can be visually and visually displayed on a network management operation and maintenance monitoring interface, so that remote intelligent operation and maintenance can be realized.
In summary, the embodiments of the present invention provide a WDM system with a front-end optical module and a WDM network management method with a front-end optical module, which solve the risk of misreading of network management caused by reflection loss of a semi-active local side only through main link spectral determination by adding spectral determination of each branch on breakpoint fault determination logic of a main link, and simultaneously avoid that when a part of optical modules in all optical modules in the far-end fail, the far-end incoming light reduces the threshold of triggering main link switching, thereby eliminating the risk of misregistration when the main link is intact; the reserved cascade expansion interface and the OTDR monitoring interface are added on the system hardware architecture, the cascade of similar/heterogeneous business/function boards can be supported, the function expansibility and compatibility of equipment are improved, corresponding business boards can be newly added on the premise of not off-line with the original business boards along with the increase of business, monitoring function boards such as OTDR and the like can be supported, the investment of users can be effectively protected, and a method for providing remote obstacle removing positioning is supported; the alarm dyeing processing logic is provided, based on OAM signals and PD monitoring values analyzed by the semi-active local side optical module, the position of a fault point of the optical module or each link can be remotely and accurately judged, and the alarm dyeing processing logic is visually and visually displayed on a network management operation and maintenance monitoring interface, so that the remote intelligent operation and maintenance can be realized.
The third embodiment of the present invention also provides an electronic device, for example, including: at least one processing unit, and at least one storage unit, wherein the storage unit stores a computer program, which when executed by the processing unit, causes the processing unit to perform the method according to the first embodiment, and the beneficial effects of the electronic device provided by the present embodiment are the same as those of the optical module WDM method provided by the second embodiment.
The fourth embodiment of the present invention also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the above-described method. The computer readable storage medium may include, but is not limited to, any type of disk including floppy disks, optical disks, DVDs, CD-ROMs, micro-drives, and magneto-optical disks, ROM, RAM, EPROM, EEPROM, DRAM, VRAM, flash memory devices, magnetic or optical cards, nanosystems (including molecular memory ICs), or any type of media or device suitable for storing instructions and/or data, and the advantages of the computer readable storage medium provided by the present embodiment are the same as those of the front-end optical module WDM method provided by the second embodiment.
It should be noted that, for simplicity of description, the foregoing method embodiments are all described as a series of acts, but it should be understood by those skilled in the art that the present application is not limited by the order of acts described, as some steps may be performed in other orders or concurrently in accordance with the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present application.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
In the several embodiments provided by the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, such as the division of the units, merely a logical function division, and there may be additional manners of dividing the actual implementation, such as 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 service interface, device or unit indirect coupling or communication connection, electrical or otherwise.
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 the embodiments 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 integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable memory. Based on this understanding, the technical solution of the present application may be embodied essentially or partly in the form of a software product, or all or part of the technical solution, which is stored in a memory, and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned memory includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Those of ordinary skill in the art will appreciate that all or a portion of the steps in the various methods of the above embodiments may be performed by hardware associated with a program that is stored in a computer readable memory, which may include: flash disk, read-Only Memory (ROM), random-access Memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.
The foregoing is merely exemplary embodiments of the present disclosure and is not intended to limit the scope of the present disclosure. That is, equivalent changes and modifications are contemplated by the teachings of this disclosure, which fall within the scope of the present disclosure. Embodiments of the present disclosure will be readily 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 disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a scope and spirit of the disclosure being indicated by the claims.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. A front-end optical module WDM system comprising:
A plurality of remote optical modules;
The passive WDM module comprises a far-end multiplexing/demultiplexing unit and is used for multiplexing or demultiplexing light transmitted between a plurality of passive light branches corresponding to the plurality of far-end optical modules and a light main link;
A plurality of local side optical modules; and
An active WDM module comprising:
the near-end combining and dividing unit is used for combining or dividing light transmitted between a plurality of active light branches corresponding to the local side optical modules and the light main link;
The optical power monitoring unit is respectively connected with the light main link and the active light branches for light receiving monitoring;
the near-end combining and dividing unit comprises:
at least two main link optical interfaces respectively connected with at least two active light main links backed up mutually;
The branch optical interfaces are respectively connected with the corresponding active light branches;
and the plurality of light splitting detectors are respectively connected with the main link optical interfaces and the branch optical interfaces and are used for detecting the optical power of the corresponding light main link and the corresponding active light branch.
2. The front-end optical module WDM system of claim 1, wherein the near-end combiner-divider unit comprises:
And the OTDR monitoring interface is connected to the light main link through a corresponding optical monitoring wave plate and is used for supporting connection with an OTDR functional board card to realize OTDR fault monitoring.
3. The front-end optical module WDM system of claim 2, wherein the near-end combiner-divider unit comprises:
the MEMS optical switches are respectively connected to the at least two main link optical interfaces and are used for switching and connecting to the standby light main links when the protection switching condition is triggered;
The plurality of light splitting wave plates and the plurality of light receiving wave plates are connected to the MEMS optical switch after being sequentially cascaded and used for receiving main-link light rays and sending the main-link light rays to the corresponding branch optical interfaces after being separated according to the wavelength, or sending the main-link light rays to the light ray after receiving the plurality of branch light rays with the corresponding wavelength;
4. A front-end optical module WDM system according to claim 3, wherein the near-end combiner-divider unit further comprises:
and the cascade expansion interface is cascaded with the plurality of light splitting wave plates and the plurality of light receiving wave plates and is used for supporting cascade access of a service board card comprising a plurality of active light branches.
5. The front optical module WDM system of claim 4, wherein the OTDR function board card comprises: an OTDR module and a MEMS optical switch connected with the OTDR module; and the service boards are connected to the MEMS optical switch after being cascaded through the cascade expansion interfaces respectively, so that the OTDR monitoring interfaces of the service boards share the OTDR functional board, and fault monitoring is carried out on the service boards.
6. A WDM network management method for a front optical module, which is adapted to the WDM system for a front optical module according to any one of claims 1 to 5, comprising:
Collecting the optical power monitoring value of the far-end incoming light at each active light branch side of an active WDM module;
if the optical power monitoring values of all the active light branches of the active WDM module are reduced to a preset threshold value, determining that a breakpoint exists in the current main link of the active WDM module, and executing protection switching to be switched to a standby main link;
if the optical power monitoring value of any one of the collected active light branches is not reduced to the preset threshold value, the current main link of the active WDM module is not damaged, and the switching is not executed.
7. The method of WDM network management for a front-end optical module of claim 6, further comprising:
Respectively analyzing OAM signals of a receiving active light branch and a transmitting active light branch of a local side optical module of the active WDM module to obtain corresponding optical power monitoring values;
And judging the fault point position of the optical module or the optical link in the front optical module WDM system according to the optical power monitoring value.
8. The WDM network management method of claim 6, wherein determining the fault point location of the optical module or the optical link in the WDM system based on the optical power monitor value includes:
When the OAM information of the local optical module is that the local received optical power is-40 dBm and the emitted optical power is normal, the far-end received optical power and the emitted optical power are both-40 dBm, the optical power monitoring value of the far-end optical module corresponding to the wave channel is-40 dBm, and the optical power monitoring value of the local optical module corresponding to the wave channel is normal, judging that the emitting link of the far-end optical module is faulty;
when the local end receiving and emitting power is normal, the far end emitting light power is normal, the receiving light power is-40 dBm, and the light power monitoring values of the corresponding channels of the far end light module and the local end light module are normal, judging the receiving link fault of the far end light module;
When the OAM information of the local optical module is normal in local transmitting optical power, the receiving optical power is-40 dBm, the far-end receiving optical power and the light-emitting optical power are-40 dBm, and the optical power monitoring value of the local optical module corresponding to the channel is normal, judging that the main link fails;
When the OAM information of the local optical module is that the local received optical power is-40 dBm, the emitted optical power is normal, the far-end received optical power and the emitted optical power are both-40 dBm, and the optical power monitoring value of the corresponding channel of the far-end optical module is normal, judging that the receiving link of the local optical module has fault;
And judging that the transmitting link of the local optical module fails when the OAM information of the local optical module has the local receiving and the light emitting power of-40 dBm and the remote receiving and the light emitting power of-40 dBm and the light power monitoring value of the corresponding channel of the local optical module is-40 dBm.
9. An electronic device comprising at least one processing unit, and at least one storage unit, wherein the storage unit stores a computer program that, when executed by the processing unit, causes the processing unit to perform the steps of the method of any of claims 6-8.
10. A computer readable storage medium, characterized in that it stores a computer program executable by an access authentication device, which when run on the access authentication device causes the access authentication device to perform the steps of the method according to any of claims 6-8.
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