CN105337656A - Optical network connection relation determination method, equipment and system - Google Patents
Optical network connection relation determination method, equipment and system Download PDFInfo
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- CN105337656A CN105337656A CN201410393176.8A CN201410393176A CN105337656A CN 105337656 A CN105337656 A CN 105337656A CN 201410393176 A CN201410393176 A CN 201410393176A CN 105337656 A CN105337656 A CN 105337656A
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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
Abstract
The invention discloses an optical network connection relation determination method, equipment and a system. The method comprises steps of detecting a first optical power received by each receiving equipment in a to-be-tested area, wherein the receiving equipment is an optical line terminal or optical network equipment, and the first optical power is the power of the receiving equipment receiving a signal; indicating to bend an optical fiber or a to-be-tested optical fiber connected with a to-be-tested port; detecting a second optical power received by each receiving equipment in the to-be-tested area, wherein the second optical power is the power of the receiving equipment receiving the signal after the optical fiber is bent; and if the difference between the first optical power and the second optical power received by the first receiving equipment is greater than a threshold or the first receiving equipment receives alarm information, determining that the to-be-tested port or the to-be-tested optical fiber and the first receiving equipment are connected. The method can determine the optical network connection relation rapidly and conveniently.
Description
Technical field
The present invention relates to field of optical networks, particularly relate to a kind of connection relation of optical network defining method, equipment and system.
Background technology
Along with user is to the continuous growth of bandwidth demand, traditional copper cash broadband access system more and more can not adapt to the demand of user, meanwhile, the Fibre Optical Communication Technology that bandwidth capacity is huge is increasingly mature, application cost declines year by year, and Optical Access Network becomes the contenders of broadband access network of future generation.Wherein, EPON is the wherein a kind of of Optical Access Network.As shown in Figure 1, in present embodiment, EPON comprises: optical line terminal (OpticalLineTerminal, OLT) 110, Optical Distribution Network 120 and optical network device 130.Optical network device 130 can be Optical Network Terminal (OpticalNetworkTermination, ONT) or optical network unit (OpticalNetworkUnit, ONU).Optical Distribution Network 120 is made up of passive devices such as trunk optical fiber, optical branching device 121 and shunt optical fiber usually, and trunk optical fiber connects OLT and optical branching device 121, and optical branching device 121 passes through shunt Fiber connection to optical network device 130.
For the ease of construction, administer and maintain, Optical Distribution Network 120 is usually at fibre distribution frame (OpticalDistributionFrame, ODF), fiber cable cross connection box (FiberDistributionTerminal, and optical fiber distributing box (FiberAccessTerminal FDT), etc. FAT) place carries out continuing of optical fiber, described in the mode that continues comprise and adopt flexible jumper, cold connector to connect or adopt heat sealing machine welding.Tradition Optical Distribution Network adopts the succession relation of paper labels fiber identification link usually, namely on optical fiber, paper labels is pasted, paper labels is then indicated this optical fiber from the numbering of optical line terminal, this optical fiber from the port numbering of fibre distribution frame, this optical fiber from the port numbering of fiber cable cross connection box, this optical fiber from the port numbering of optical fiber distributing box, the port numbering of fibre distribution frame that this optical fiber will be connected to, the port label of fiber cable cross connection box that this optical fiber will be connected to, the port numbering of optical fiber distributing box that this optical fiber will be connected to, this optical fiber by be connected to optical network unit numbering at least one.But after using for a long time, paper labels may be damaged, or service worker does not correspondingly revise paper labels after change port succession relation, thus causes optical fiber link upper port succession relation chaotic.When needs open new business or need to upgrade to network or network failure needs keep in repair time, need effective means to identify the succession relation of optical fiber link, to complete continuing and following the tracks of of corresponding optical fiber link fast.
So, prior art provides a kind of connection relation of optical network defining method, it comprises light source and optical fiber identifier, wherein light source can inject specific signal in optical fiber, as the signal of direct current light signal or characteristic frequency, optical fiber identifier then provides optical fiber slot with curved fiber, and the light leak signal that detection produces because of fibre-optical bending, judge the signal whether signal received injects in optical fiber as light source, if it is can judge light source and optical fiber identifier operation be same optical fiber.Concrete use procedure is, light source is connected to optical fiber to be identified in office side by operating personnel, and launch signal specific and transmit to optical fiber, inform this signal launched of testing staff of far-end simultaneously, numerous optical fiber is connected to optical fiber identifier and detects the signal whether having light source to launch by the testing staff of far-end one by one, if can detect and transmitted, what just show two people's operations is same optical fiber, and then completes the identification of optical fiber.
There is following shortcoming in prior art:
In the process detected, operating personnel are needed in testing fiber, to inject certain optical signals at office's side light source, another operating personnel need to adopt optical fiber identifier in numerous optical fiber, find the optical fiber injecting certain optical signals at far-end simultaneously, and both cooperations complete the track and localization of optical fiber.After often having identified an optical fiber, need the personnel at two ends to switch to proceed the identification of other optical fiber simultaneously, and the longest 20km that reaches of the physical link length of fiber optic network, this brings certain difficulty by giving the cooperation of two operating personnel, easily cause erroneous judgement, and cost of labor is larger.In addition, in identifying, after office side operating personnel inject certain optical signals in a testing fiber, far-end operation personnel need the light signal searched one by one in the optical fiber of far-end, and till the certain optical signals injected until finding local side, efficiency is very low.
Summary of the invention
Embodiment of the present invention technical problem to be solved is how to solve the poor efficiency of prior art measuring fiber connection status, high cost problem.
First aspect, embodiments provide a kind of connection relation of optical network defining method, comprise: detect the first luminous power that each receiving equipment in region to be measured receives, wherein, described receiving equipment is optical line terminal or optical network device, and described first luminous power is the power that described receiving equipment receives signal; Instruction bends the optical fiber be connected with port to be measured or testing fiber; Detect the second luminous power that in described region to be measured, each receiving equipment receives, wherein, described second luminous power is the power that after described fibre-optical bending, described receiving equipment receives signal; If the difference of the first luminous power that the first receiving equipment receives and the second luminous power is greater than threshold value or described first receiving equipment receives warning information, then determine described port to be measured or there is annexation between described testing fiber and described first receiving equipment.
In conjunction with first aspect, in the first possible execution mode of the application's first aspect, described port to be measured is the port of port in the port of fibre distribution frame or the port of fiber cable cross connection box or optical fiber distributing box or the port of optical line terminal or the port of optical branching device or optical network unit.
In conjunction with first aspect, in the execution mode that the second of the application's first aspect is possible, described testing fiber is the optical fiber be connected with the port of the port in the port of fibre distribution frame or the port of fiber cable cross connection box or optical fiber distributing box or the port of optical line terminal or the port of optical branching device or optical network unit.
In conjunction with first aspect, in the third possible execution mode of the application's first aspect, the signal of described signal for sending when carrying out normal communications traffic between transmitting apparatus and receiving equipment.
In conjunction with first aspect to any one execution mode in the third possible execution mode of first aspect, in the 4th kind of possible execution mode of the application's first aspect, described optical network device is Optical Network Terminal or optical network unit.
Second aspect, embodiments provide a kind of management equipment, comprise: detection module, for the first luminous power that each receiving equipment detected in region to be measured receives, wherein, described receiving equipment is optical line terminal or optical network device, and described first luminous power is the power that described receiving equipment receives signal, and described first luminous power is sent to described judging module by described detection module; Indicating module, is used to indicate and bends the optical fiber be connected with port to be measured or testing fiber; Described detection module, also for detecting the second luminous power that in described region to be measured, each receiving equipment receives, wherein, described second luminous power is the power that after described fibre-optical bending, described receiving equipment receives signal, and described second luminous power is sent to described judging module by described detection module; Judge module, for receiving described first luminous power and described second luminous power, when the first luminous power of the first receiving equipment reception and the difference of the second luminous power are greater than threshold value or described first receiving equipment receives warning information, determine described port to be measured or there is annexation between testing fiber and described first receiving equipment.
In conjunction with second aspect, in the first possible execution mode of the application's second aspect, described port to be measured is the port of port in the port of fibre distribution frame or the port of fiber cable cross connection box or optical fiber distributing box or the port of optical line terminal or the port of optical branching device or optical network unit.
In conjunction with second aspect, in the execution mode that the second of the application's second aspect is possible, described testing fiber is the optical fiber be connected with the port of the port in the port of fibre distribution frame or the port of fiber cable cross connection box or optical fiber distributing box or the port of optical line terminal or the port of optical branching device or optical network unit.
In conjunction with second aspect, in the third possible execution mode of the application's second aspect, the signal of described signal for sending when carrying out normal communications traffic between transmitting apparatus and receiving equipment.
In conjunction with second aspect to any one execution mode in the third possible execution mode of second aspect, in the 4th kind of possible execution mode of the application's second aspect, described optical network device is Optical Network Terminal or optical network unit.
The third aspect, embodiments provide a kind of optical network system, comprise: management equipment, bending apparatus, multiple receiving equipment, wherein pass through Fiber connection between multiple receiving equipment, the first luminous power that described management equipment receives for each receiving equipment detected in region to be measured, wherein, described receiving equipment is optical line terminal or optical network device, and described first luminous power is the power that described receiving equipment receives signal; Described management equipment is also used to indicate and bends the optical fiber be connected with port to be measured or testing fiber; Described bending apparatus is used for bending the optical fiber be connected with port to be measured or testing fiber according to instruction; Described management equipment is also for detecting the second luminous power that in described region to be measured, each receiving equipment receives, and wherein, described second luminous power is the power that after described fibre-optical bending, described receiving equipment receives signal; Described management equipment also for when the difference of the first luminous power that the first receiving equipment receives and the second luminous power is greater than threshold value or described first receiving equipment receives warning information, is determined described port to be measured or be there is annexation between testing fiber and described first receiving equipment.
In conjunction with the third aspect, in the first possible execution mode of the application's third aspect, described port to be measured is the port of port in the port of fibre distribution frame or the port of fiber cable cross connection box or optical fiber distributing box or the port of optical line terminal or the port of optical branching device or optical network unit.
In conjunction with the third aspect, in the execution mode that the second of the application's third aspect is possible, described testing fiber is the optical fiber be connected with the port of the port in the port of fibre distribution frame or the port of fiber cable cross connection box or optical fiber distributing box or the port of optical line terminal or the port of optical branching device or optical network unit.
In conjunction with the third aspect, in the third possible execution mode of the application's third aspect, the signal of described signal for sending when carrying out normal communications traffic between transmitting apparatus and receiving equipment.
In conjunction with the third aspect to any one execution mode in the third possible execution mode of the third aspect, in the 4th kind of possible execution mode of the application's third aspect, described optical network device is Optical Network Terminal or optical network unit.
In such scheme can according to the optical fiber be connected with port bending before and bending after cause the first receiving equipment to receive the first luminous power and the difference of the second luminous power be greater than threshold value, thus determine and Fiber connection port or there is annexation between testing fiber and the first equipment.By implementing the embodiment of the present invention, obtain the first luminous power that receiving equipment sends simultaneously, then the first luminous power of which receiving equipment of automatic decision and the difference of the second luminous power are greater than threshold value, so determine rapidly and Fiber connection port or there is annexation between testing fiber and the first equipment.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of prior art EPON one execution mode;
Fig. 2 is the structural representation of optical network system one execution mode of the present invention;
Fig. 3 is the structural representation of an execution mode of fibre junction in optical network system of the present invention;
Fig. 4 is the structural representation of a port to be measured in the mode of the fibre junction shown in Fig. 3 or testing fiber;
Fig. 5 is the flow chart of connection relation of optical network defining method one execution mode of the present invention;
Fig. 6 is the structural representation of management equipment one execution mode of the present invention;
Fig. 7 is the structural representation of another execution mode of management equipment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
It should be noted that, the term used in embodiments of the present invention is only for the object describing specific embodiment, and not intended to be limiting the present invention." one ", " described " and " being somebody's turn to do " of the singulative used in the embodiment of the present invention and appended claims is also intended to comprise most form, unless context clearly represents other implications.It is also understood that term "and/or" used herein refer to and comprise one or more project of listing be associated any or all may combine.
Consult Fig. 2, Fig. 2 is the structural representation of optical network system one execution mode of the present invention.The system of present embodiment comprises: optical line terminal 110, Optical Distribution Network 120, optical network device 130, management equipment 140 and bending apparatus 150.Wherein, receiving equipment can be optical line terminal 110 or optical network device 130, and bending apparatus 150 can be fibre-optical bending device (iFiberBender).Optical network device 130 can be Optical Network Terminal or optical network unit.Optical Distribution Network 120 is made up of passive devices such as trunk optical fiber, optical branching device 121 and shunt optical fiber usually, and trunk optical fiber connects OLT and optical branching device 121, and optical branching device 121 passes through shunt Fiber connection to optical network device 130.Management equipment 140 directly or by internet can connect optical line terminal 110.
Due to optical line terminal 110 and optical branching device 121, distance between optical branching device 121 and optical network device 130 may be far, for the ease of construction, administer and maintain, Optical Distribution Network 120 carries out continuing of optical fiber at places such as fibre distribution frame 122, fiber cable cross connection box 123 and optical fiber distributing boxes 124 usually.Such as, as shown in Figure 3, port on optical line terminal 110 is by first port of the first Fiber connection to the first fibre distribution frame 122, first port of the first fibre distribution frame 122 is by first port of the second Fiber connection to the second fibre distribution frame 122, first port of the second fibre distribution frame 122 is by first port of the 3rd Fiber connection to fiber cable cross connection box 123, first port of fiber cable cross connection box 123 is by the input port of the 4th Fiber connection to optical branching device 121, first output port of optical branching device 121 passes through the 5th Fiber connection to the first port in optical fiber distributing box 124, the first port in optical fiber distributing box 124 is connected to the port of optical network device 130 by six fibers, thus constitute an optical fiber link from optical line terminal 110 to optical network device 130.
Carrying out in the construction of optical-fiber network, service dispense and associated maintenance process, first need to identify the annexation of port on the optical link of to be onstructed, service dispense, maintenance and optical line terminal 110 and/or optical network device 130, and, the annexation of the optical fiber on optical link and optical line terminal 110 and/or optical network device 130, carries out the work such as constructing operation, link-quality detection and assessment so that follow-up to this optical fiber link.Certainly, in some cases, only may need identify the annexation of port on optical link and optical line terminal 110 and/or optical network device 130, or only need identify the annexation of optical fiber on optical link and optical line terminal 110 and/or optical network device 130.Wherein, need the port carrying out identifying to be port to be measured, need the optical fiber carrying out identifying to be testing fiber.Described port to be measured can be port of port, the port of optical line terminal 110, the port of optical branching device 121 or optical network device 130 in the port of fibre distribution frame 122, the port of fiber cable cross connection box 123, optical fiber distributing box 124 etc.Described testing fiber is optical fiber be connected with the port of the port of the port in the port of the port of fibre distribution frame 122, fiber cable cross connection box 123, optical fiber distributing box 124, optical line terminal 110, the port of optical branching device 121 or optical network device 130 etc.
When needing the annexation determining port to be measured or optical fiber, management equipment 140 sends the order of the downlink reception luminous power measuring optical network device 130 or measures the order of luminous power of the uplink optical signal that the optical network device 130 that receives of optical line terminal 110 sends to all optical line terminals 110 in region to be measured.Optical line terminal 110 in region to be measured is after receiving order, indicate the luminous power of corresponding optical network device 130 to the downstream signal received to measure or directly the luminous power of the uplink optical signal that the corresponding light network equipment 130 received sends measured, thus obtaining the first luminous power.Then, optical line terminal 110 sends to management equipment 140 by measuring the first luminous power obtained.Management equipment 140 is after receiving the first luminous power, and instruction workmen's pair optical fiber be connected with port to be measured or testing fiber bend.Wherein, indicate and be sent on the mobile terminal that construction worker holds by wireless network, or be directly sent on the display screen of bending apparatus 150.Construction worker utilizes bending apparatus 150 to bend the optical fiber be connected with port to be measured or testing fiber according to instruction, and the information feeding back curved fiber is to management system 140.Management system 140 sends measuring command to all optical line terminals 110 in region to be measured again, optical network device 130 in region to be measured is after receiving measuring command, again indicate the luminous power of corresponding optical network device 130 to the downstream signal received to measure or directly the luminous power of the uplink optical signal that the corresponding light network equipment 130 received sends measured, thus obtaining the second luminous power.Then, optical line terminal 110 sends to management equipment 140 by measuring the second luminous power obtained.The first luminous power received and the second luminous power, after receiving the second luminous power, compare by management equipment 140.If the first luminous power of uplink optical signal and the difference of the second luminous power of the downstream signal that the optical network device 130 of certain optical line terminal 110 receives or the corresponding light network equipment 130 that it receives transmission are greater than threshold value, then determine port to be measured or testing fiber and there is annexation between this optical line terminal 110 and optical network device 130.Described optical line terminal 110 is after receiving measuring command, indicate the luminous power of corresponding optical network device 130 to the downstream signal received to measure to realize (as the OMCI passage of GPON by management channels between optical line terminal 110 and optical network device 130, the OAM passage of EPON), namely optical line terminal 110 completes the measuring light power of the downstream signal received by management channels notice optical network device 130, after optical network device 130 completes measuring light power, report optical line terminal 110 by management channels.Such as, as shown in Figure 4, if threshold value is 1dB (decibel, decibel), port to be measured is the first port of the first fibre distribution frame, first all optical line terminals in region to be measured complete the first measuring light power, and the first luminous power obtained is respectively optical network device 1:-25.1dBm, optical network device 2:-25.8dBm, optical network device 3:-23.8dBm and optical network device 4:-24.4dBm.Then the optical fiber of the first port connection of bending first fibre distribution frame, all optical line terminals in region to be measured complete the second measuring light power, and the second luminous power obtained is respectively optical network device 1:-26.3dBm, optical network device 2:-26.9dBm, optical network device 3:-23.6dBm and optical network device 4:-24.5dBm.Then the difference of the first luminous power and the second luminous power is respectively: optical network device 1:1.2dB, optical network device 2:1.1dB, optical network device 3:-0.2dB and optical network device 4:0.1dB.The optical network device 1 connected due to optical line terminal 1 and the first luminous power of optical network device 2 and the difference of the second luminous power are all greater than threshold value, and the optical network device 3 that optical line terminal 2 connects and the first luminous power of optical network device 4 and the difference of the second luminous power are all less than threshold value, coincidence measurement error, then can judge, the first port of the first fibre distribution frame and its optical fiber connected and optical line terminal 1 and there is annexation between optical network device 1 and optical network device 2.Similarly, if testing fiber is the optical fiber be connected with the first port of the first fibre distribution frame, above-mentioned way then can be adopted equally to obtain testing fiber and optical line terminal 1 and there is annexation between optical network device 1 and optical network device 2, do not launch to repeat herein.
Alternatively, if the loss that curved fiber brings is excessive, the communication disruption between optical line terminal 110 and optical network device 130 is caused to cause carrying out the measurement of the second luminous power or communication quality deterioration when seriously causing reporting the second luminous power, optical line terminal 110 can detect optical network device 130 communication disruption alarm or communication quality deterioration alarm, and warning information is reported management equipment 140.Management equipment 140 can be determined port to be measured and/or optical fiber according to warning information and there is annexation between this optical line terminal 110 and optical network device 130.Such as, as shown in Figure 4, if threshold value is 1dB (decibel, decibel), port to be measured is the first port of the first fibre distribution frame, first all optical line terminals in region to be measured complete the first measuring light power, and the first luminous power obtained is respectively optical network device 1:-27.6dBm, optical network device 2:-27.8dBm, optical network device 3:-23.8dBm and optical network device 4:-24.4dBm.Then the optical fiber of the first port connection of bending first fibre distribution frame, all optical line terminals in region to be measured complete the second measuring light power, because the loss of curved fiber entrance link causes received optical power to exceed the receiving sensitivity of optical network device 1 and optical network device 2, and then cause optical line terminal 1 and the communication disruption between optical network device 1 and optical network device 2, the second luminous power cannot be obtained, now optical line terminal 1 can detect that optical network device 1 and optical network device 2 communication disruption alarm or communication quality deterioration alarm are (as LOS alarm, LossofSignal), and warning information is reported management equipment.And the second luminous power of optical network device 3 and optical network device 4 is respectively optical network device 3:-23.6dBm and optical network device 4:-24.5dBm.Then the difference of the first luminous power and the second luminous power is respectively: optical network device 1:-, optical network device 2:-, optical network device 3:-0.2dB and optical network device 4:0.1dB.Due to first optical line terminal OLT 1 connect optical network device 1 and optical network device 2 the second luminous power do not detected, but there are communication disruption alarm or communication quality deterioration alarm, and the optical network device 3 that the second optical line terminal OLT 2 connects and the first luminous power of optical network device 4 and the difference of the second luminous power are all less than threshold value, coincidence measurement error, then can judge, the first port of the first fibre distribution frame and its optical fiber connected and optical line terminal 1 and there is annexation between optical network device 1 and optical network device 2.Similarly, if testing fiber is the optical fiber be connected with the first port of the first fibre distribution frame, above-mentioned way then can be adopted equally to obtain testing fiber and optical line terminal 1 and there is annexation between optical network device 1 and optical network device 2, do not launch to repeat herein.
Alternatively, in order to improve the accuracy of connection relation of optical network, after completing the second measuring light power, management equipment 140 again can send the luminous power order of the downlink reception luminous power measuring optical network device 130 or the uplink optical signal measuring optical network device 130 transmission that optical line terminal 110 receives after cancelling fibre-optical bending to all optical line terminals 110 in region to be measured, to obtain the 3rd luminous power, if the difference of the first luminous power that certain optical line terminal obtains and the second luminous power is greater than threshold value, and the difference of the first luminous power and the 3rd luminous power is less than threshold value, then determine that port to be measured or testing fiber exist annexation between this optical line terminal 110 and corresponding optical network device 130.Or; certain optical line terminal does not normally obtain the second luminous power; and communication disruption alarm or communication quality deterioration alarm between this optical line terminal and its optical network unit connected detected; but normally can obtain the 3rd luminous power; the difference of the first luminous power and the 3rd luminous power is less than threshold value; and this optical line terminal and its connect optical network unit between communication disruption alarm or communication quality deterioration alarm cancel, then determine that port to be measured or testing fiber exist annexation between this optical line terminal 110 and corresponding optical network device 130.
When constructing to the port on backbone and/or optical fiber, all optical line terminals in region to be measured can be indicated to measure the luminous power of all optical network devices to the downstream signal received that it connects or directly measure respectively the luminous power of the uplink optical signal that all optical network devices send; In order to raise the efficiency, when constructing to the port on backbone and/or optical fiber, all optical line terminals in region to be measured also can be indicated to measure the luminous power of certain optical network device to the downstream signal received that it connects or directly measure the luminous power of the uplink optical signal that certain optical network device sends; And when the port of optical branching device is constructed, all optical line terminals in region to be measured can be indicated to measure the luminous power of all optical network devices to the downstream signal received that it connects or directly the luminous power of the uplink optical signal that all optical network devices send is measured respectively; In order to raise the efficiency, also first can measure to the input port of optical branching device the optical line terminal that judges that this optical branching device connects, then directly indicate the luminous power of this line terminal to the downstream signal that all optical network devices that it connects receive to measure or directly the luminous power of the uplink optical signal that all optical network devices send measured.
Be understandable that, the user of network is used normally to communicate in order to not affect, for the port to be measured had on the optical fiber link that carries out communicating carry out annexation determine time, the signal sent when the signal carrying out power measurement can be and carry out normal communications traffic between transmitting apparatus and receiving equipment.For the port to be measured on the optical fiber link not carrying out communicating carry out annexation determine time, can to transmitting apparatus send order,
Transmitting apparatus is sent test massage, and now, the signal carrying out power measurement is then test signal.
In addition, arranging of threshold value can based on experience value and the loss of optical fiber link and arranging, and the present invention does not do concrete restriction.
Before can bending according to the optical fiber be connected with port to be measured or testing fiber in such scheme and bending after cause the first receiving equipment to receive the first luminous power and the difference of the second luminous power be greater than threshold value, thus automatically determine and Fiber connection port to be measured or there is annexation between testing fiber and the first equipment.By implementing the embodiment of the present invention, can determine connection relation of optical network simply and easily, only needing one to detect operating personnel in actual mechanical process can complete, and reduces the complexity of operation, and then reduces cost of labor.Meanwhile, connection relation of optical network certainty annuity of the present invention does not need the light source outside independent of optical line terminal, can be cost-saving further.
See the flow chart that Fig. 5, Fig. 5 are connection relation of optical network defining method one execution modes of the present invention.The method comprises:
510: detect the first luminous power that each receiving equipment in region to be measured receives.
When needing the annexation determining port to be measured or optical fiber, management equipment sends the order of the downlink reception luminous power measuring optical network devices or measures the order of luminous power of the uplink optical signal that optical network device that optical line terminal receives sends to all optical line terminals in region to be measured.Optical line terminal in region to be measured is after receiving order, indicate the luminous power of corresponding optical network device to the downstream signal received to measure or directly the luminous power of the uplink optical signal that the corresponding light network equipment received sends measured, thus obtaining the first luminous power.Then, optical line terminal sends to management equipment by measuring the first luminous power obtained.
Being understandable that, using the user of network normally to communicate to not affect, for there being the optical fiber link carrying out communicating, the signal sent when the signal carrying out power measurement can be and carry out normal communications traffic between transmitting apparatus and receiving equipment.For the optical fiber link not carrying out communicating, can send order, transmitting apparatus is sent test massage to transmitting apparatus, now, the signal carrying out power measurement is then test signal.
520: the optical fiber be connected with port to be measured or testing fiber are bent.
Particularly, due to optical line terminal and optical branching device, distance between optical branching device and optical network device may be far, and for the ease of construction, administer and maintain, Optical Distribution Network carries out continuing of optical fiber at places such as fibre distribution frame, fiber cable cross connection box and optical fiber distributing boxes usually.Such as, as shown in Figure 3, port on optical line terminal is by first port of the first Fiber connection to the first fibre distribution frame, first port of the first fibre distribution frame is by first port of the second Fiber connection to the second fibre distribution frame, first port of the second fibre distribution frame is by first port of the 3rd Fiber connection to fiber cable cross connection box, first port of fiber cable cross connection box is by the input port of the 4th Fiber connection to optical branching device, first output port of optical branching device passes through the 5th Fiber connection to the first port in optical fiber distributing box, the first port in optical fiber distributing box is connected to the port of optical network unit by six fibers, thus constitute one from optical line terminal to the optical fiber link of optical network unit.
Carrying out in the construction of optical-fiber network, service dispense and associated maintenance process, first need to identify the annexation of port on the optical link of to be onstructed, service dispense, maintenance and optical line terminal and/or optical network device, and, the annexation of the optical fiber on optical link and optical line terminal and/or optical network device, carries out the work such as constructing operation, link-quality detection and assessment so that follow-up to this optical fiber link.Certainly, in some cases, only may need identify the annexation of port on optical link and optical line terminal and/or optical network device, or only need identify the annexation of optical fiber on optical link and optical line terminal and/or optical network device.Wherein, need the port carrying out identifying to be port to be measured, need the optical fiber carrying out identifying to be testing fiber.Described port to be measured can be port of port, the port of optical line terminal, the port of optical branching device or optical network unit in the port of fibre distribution frame, the port of fiber cable cross connection box, optical fiber distributing box etc.Described testing fiber is optical fiber be connected with the port of the port of the port in the port of the port of fibre distribution frame, fiber cable cross connection box, optical fiber distributing box, optical line terminal, the port of optical branching device or optical network unit etc.
Management equipment, after receiving the first luminous power, indicates and bends the optical fiber be connected with port to be measured or testing fiber.Wherein, indicate and be sent on the mobile terminal that construction worker holds by wireless network.Construction worker utilizes bending apparatus to bend the optical fiber be connected with port to be measured or testing fiber according to instruction, feeds back the information of curved fiber to management system.
530: detect the second luminous power that each receiving equipment in region to be measured receives, wherein, the second luminous power is the power that after fibre-optical bending, receiving equipment receives signal.
Particularly, after fibre-optical bending, management system sends measuring command to all optical line terminals in region to be measured again, optical network device in region to be measured is after receiving measuring command, again indicate the luminous power of corresponding optical network device to the downstream signal received to measure or directly the luminous power of the uplink optical signal that the corresponding light network equipment received sends measured, thus obtaining the second luminous power.Then, optical line terminal sends to management equipment by measuring the second luminous power obtained.
540: if the difference of the first luminous power of receiving of the first receiving equipment and the second luminous power is greater than threshold value, then determine to there is annexation between port to be measured and the first receiving equipment.
Particularly, the first luminous power received and the second luminous power, after receiving the second luminous power, compare by management equipment.If the first luminous power of uplink optical signal and the difference of the second luminous power of the downstream signal that the optical network device of certain optical line terminal receives or the corresponding light network equipment that it receives transmission are greater than threshold value, then determine port to be measured or testing fiber and there is annexation between this optical line terminal and optical network device.
Such as, as shown in Figure 4, if threshold value is 1dB (decibel, decibel), port to be measured is the first port of the first fibre distribution frame, first all optical line terminals in region to be measured complete the first measuring light power, and the first luminous power obtained is respectively optical network device 1:-25.1dBm, optical network device 2:-25.8dBm, optical network device 3:-23.8dBm and optical network device 4:-24.4dBm.Then the optical fiber of the first port connection of bending first fibre distribution frame, all optical line terminals in region to be measured complete the second measuring light power, and the second luminous power obtained is respectively optical network device 1:-26.3dBm, optical network device 2:-26.9dBm, optical network device 3:-23.6dBm and optical network device 4:-24.5dBm.Then the difference of the first luminous power and the second luminous power is respectively: optical network device 1:1.2dB, optical network device 2:1.1dB, optical network device 3:-0.2dB and optical network device 4:0.1dB.The optical network device 1 connected due to the first optical line terminal OLT 1 and the first luminous power of optical network device 2 and the difference of the second luminous power are all greater than threshold value, and the optical network device 3 that the second optical line terminal OLT 2 connects and the first luminous power of optical network device 4 and the difference of the second luminous power are all less than threshold value, coincidence measurement error, then can judge, the first port and first optical line terminal OLT 1 of the first fibre distribution frame and there is annexation between optical network device 1 and optical network device 2.
Similarly, if testing fiber is the optical fiber be connected with the first port of the first fibre distribution frame, above-mentioned way then can be adopted equally to obtain testing fiber and optical line terminal 1 and there is annexation between optical network device 1 and optical network device 2, do not launch to repeat herein.
Alternatively, if the loss that curved fiber brings is excessive, the communication disruption between optical line terminal and optical network device is caused to cause carrying out the measurement of the second luminous power or communication quality deterioration when seriously causing reporting the second luminous power, optical line terminal can detect the alarm of optical network device communication disruption or communication quality deterioration alarm, and warning information is reported management equipment.Management equipment can be determined port to be measured or testing fiber according to warning information and there is annexation between this optical line terminal and optical network device.
Described optical line terminal is after receiving measuring command, indicate the power of corresponding optical network device to the downstream signal received to measure to realize (as the OMCI passage of GPON by management channels between optical line terminal and optical network device, the OAM passage etc. of EPON), namely optical line terminal completes the measuring light power of the downstream signal received by management channels notice optical network device, after optical network device completes measuring light power, report optical line terminal by management channels.
Be understandable that, in order to improve the accuracy of connection relation of optical network, after completing the second measuring light power, management equipment again can send the luminous power order of the downlink reception luminous power measuring optical network device or the uplink optical signal measuring the optical network device transmission that optical line terminal receives after cancelling fibre-optical bending to all optical line terminals in region to be measured, to obtain the 3rd luminous power, if the difference of the first luminous power that certain optical line terminal obtains and the second luminous power is greater than threshold value, and the difference of the first luminous power and the 3rd luminous power is less than threshold value, then determine that port to be measured or testing fiber exist annexation between this optical line terminal and corresponding optical network device.Or; certain optical line terminal does not normally obtain the second luminous power; and communication disruption alarm or communication quality deterioration alarm between this optical line terminal and its optical network unit connected detected; but normally can obtain the 3rd luminous power; the difference of the first luminous power and the 3rd luminous power is less than threshold value; and this optical line terminal and its connect optical network unit between communication disruption alarm or communication quality deterioration alarm cancel, then determine that port to be measured or testing fiber exist annexation between this optical line terminal and corresponding optical network device.
When constructing to the port on backbone, the luminous power of all optical network devices to the downstream signal received that all optical line terminals in region to be measured can indicate it to connect is measured or is directly measured respectively the luminous power of the uplink optical signal that all optical network devices send; In order to raise the efficiency, when constructing to the port on backbone, the luminous power of certain optical network device to the downstream signal received that all optical line terminals in region to be measured also can indicate it to connect is measured or is directly measured respectively the luminous power of the uplink optical signal that certain optical network device sends; And when constructing to the port of optical branching device, the luminous power of all optical network devices to the downstream signal received that all optical line terminals in region to be measured indicate it to connect is measured or is directly measured respectively the luminous power of the uplink optical signal that all optical network devices send; In order to raise the efficiency, also first can operate to the input port of optical branching device the optical line terminal that judges that this optical branching device connects, then directly indicate the luminous power of this line terminal to the downstream signal that all optical network devices that it connects receive to measure or directly the luminous power of the uplink optical signal that all optical network devices send measured.
In addition, arranging of threshold value can based on experience value and the loss of optical fiber link and arranging, and the present invention does not do concrete restriction.
Before can bending according to the optical fiber be connected with port to be measured or testing fiber in such scheme and bending after cause the first receiving equipment to receive the first luminous power and the difference of the second luminous power be greater than threshold value, thus automatically determine and Fiber connection port to be measured or there is annexation between testing fiber and the first equipment.By implementing the embodiment of the present invention, can determine connection relation of optical network simply and easily, only needing one to detect operating personnel in actual mechanical process can complete, and reduces the complexity of operation, and then reduces cost of labor.Meanwhile, connection relation of optical network certainty annuity of the present invention does not need the light source outside independent of optical line terminal, can be cost-saving further.
The above-mentioned method illustrating the embodiment of the present invention, below for the ease of implementing the such scheme of the embodiment of the present invention better, correspondingly, is also provided for coordinating the relevant device implementing such scheme below.
Consult Fig. 6, Fig. 6 is the structural representation of management equipment one execution mode of the present invention.The management equipment 600 of present embodiment comprises: detection module 610, indicating module 620 and judging module 630.
The first luminous power that described detection module 610 receives for each receiving equipment detected in region to be measured, wherein, described receiving equipment is optical line terminal or optical network device, described first luminous power is the power that described receiving equipment receives signal, and described first luminous power is sent to described judging module 630 by described detection module 610.
Described indicating module 620 is used to indicate and carries out bending or cancelling bending to the optical fiber be connected with port to be measured or testing fiber.
Described detection module 610 is also for detecting the second luminous power that in described region to be measured, each receiving equipment receives, wherein, described second luminous power is the power that after described fibre-optical bending, described receiving equipment receives signal, and described second luminous power is sent to described judging module 630 by described detection module 610.
Described judging module 630 is for receiving described first luminous power and described second luminous power, when the first luminous power of the first receiving equipment reception and the difference of the second luminous power are greater than threshold value or described first receiving equipment receives warning information, determine described port to be measured or there is annexation between testing fiber and described first receiving equipment.
Alternatively, described port to be measured is the port of port in the port of fibre distribution frame or the port of fiber cable cross connection box or optical fiber distributing box or the port of optical line terminal or the port of optical branching device or optical network unit.
Alternatively, described testing fiber is the optical fiber be connected with the port of the port in the port of fibre distribution frame or the port of fiber cable cross connection box or optical fiber distributing box or the port of optical line terminal or the port of optical branching device or optical network unit.
Alternatively, the signal of described signal for sending when carrying out normal communications traffic between transmitting apparatus and receiving equipment.
Alternatively, described optical network device is Optical Network Terminal or optical network unit.
Device shown in Fig. 6 can perform each step in the method shown in Fig. 5, and specifically refer to Fig. 5 and associated description, it is no longer repeated herein.
Before can bending according to the optical fiber be connected with port to be measured or testing fiber in such scheme and bending after cause the first receiving equipment to receive the first luminous power and the difference of the second luminous power be greater than threshold value, thus automatically determine and Fiber connection port to be measured or there is annexation between testing fiber and the first equipment.By implementing the embodiment of the present invention, can determine connection relation of optical network simply and easily, only needing one to detect operating personnel in actual mechanical process can complete, and reduces the complexity of operation, and then reduces cost of labor.Meanwhile, connection relation of optical network certainty annuity of the present invention does not need the light source outside independent of optical line terminal, can be cost-saving further.
Consult Fig. 7, Fig. 7 is the structural representation of management equipment one execution mode of the present invention.The management equipment 700 of present embodiment comprises: receiver 710, transmitter 720 and processor 730.
The first luminous power that receiver 710 receives for each receiving equipment received in region to be measured, wherein, described receiving equipment is optical line terminal or optical network device, and described first luminous power is the power that described receiving equipment receives signal.
Described transmitter 720 is used to indicate the bending apparatus pair optical fiber/be connected with port to be measured or testing fiber bends.
Described receiver 710 is for receiving the second luminous power that in described region to be measured, each receiving equipment receives, and wherein, described second luminous power is the power that after described fibre-optical bending, described receiving equipment receives signal.
Described processor 730, for when the first luminous power of the first receiving equipment reception and the difference of the second luminous power are greater than threshold value or described first receiving equipment receives warning information, are determined described port to be measured or be there is annexation between testing fiber and described first receiving equipment.
Management equipment 700 in present embodiment also comprises memory 740, and memory 740 can comprise read-only memory and random access memory, and provides instruction and data to processor 730.A part for memory 740 can also comprise nonvolatile RAM (NVRAM).
Memory 740 stores following element, executable module or data structure, or their subset, or their superset:
Operational order: comprise various operational order, for realizing various operation.
Operating system: comprise various system program, for realizing various basic business and processing hardware based task.
In embodiments of the present invention, the operational order (this operational order can store in an operating system) that processor 730 stores by calling memory 740, performs aforesaid operations.
Processor 730 can also be called CPU (CentralProcessingUnit, CPU).Memory 740 can comprise read-only memory and random access memory, and provides instruction and data to processor 730.A part for memory 740 can also comprise nonvolatile RAM (NVRAM).In concrete application, each assembly of controller is coupled by bus system 750, and wherein bus system 750 is except comprising data/address bus, can also comprise power bus, control bus and status signal bus in addition etc.But for the purpose of clearly demonstrating, in the drawings various bus is all designated as bus system 750.
The method that the invention described above embodiment discloses can be applied in processor 730, or is realized by processor 730.Processor 730 may be a kind of integrated circuit (IC) chip, has the disposal ability of signal.In implementation procedure, each step of said method can be completed by the instruction of the integrated logic circuit of the hardware in processor 730 or software form.Above-mentioned processor 730 can be general processor, digital signal processor (DSP), application-specific integrated circuit (ASIC) (ASIC), ready-made programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic, discrete hardware components.Can realize or perform disclosed each method, step and the logic diagram in the embodiment of the present invention.The processor etc. of general processor can be microprocessor or this processor also can be any routine.Step in conjunction with the method disclosed in the embodiment of the present invention directly can be presented as that hardware decoding processor is complete, or combines complete by the hardware in decoding processor and software module.Software module can be positioned at random asccess memory, flash memory, read-only memory, in the storage medium of this area maturations such as programmable read only memory or electrically erasable programmable memory, register.This storage medium is positioned at memory 740, and processor 730 reads the information in memory 740, completes the step of said method in conjunction with its hardware.
The embodiment of the present invention also discloses a kind of optical network system, as shown in Figure 2, comprises management equipment, bending apparatus, multiple receiving equipment, wherein passes through Fiber connection between multiple receiving equipment,
The first luminous power that described management equipment receives for each receiving equipment detected in region to be measured, wherein, described receiving equipment is optical line terminal or optical network device, and described first luminous power is the power that described receiving equipment receives signal;
Described management equipment is also used to indicate and bends the optical fiber be connected with port to be measured or testing fiber;
Described bending apparatus is used for bending the optical fiber be connected with port to be measured or testing fiber according to instruction;
Described management equipment is also for detecting the second luminous power that in described region to be measured, each receiving equipment receives, and wherein, described second luminous power is the power that after described fibre-optical bending, described receiving equipment receives signal;
Described management equipment also for when the difference of the first luminous power that the first receiving equipment receives and the second luminous power is greater than threshold value or described first receiving equipment receives warning information, is determined described port to be measured or be there is annexation between testing fiber and described first receiving equipment.Wherein, port to be measured and testing fiber please refer to the record of embodiment of the method, repeat no more here.
Before can bending according to the optical fiber be connected with port to be measured or testing fiber in such scheme and bending after cause the first receiving equipment to receive the first luminous power and the difference of the second luminous power be greater than threshold value, thus automatically determine and Fiber connection port to be measured or there is annexation between testing fiber and the first equipment.By implementing the embodiment of the present invention, can determine connection relation of optical network simply and easily, only needing one to detect operating personnel in actual mechanical process can complete, and reduces the complexity of operation, and then reduces cost of labor.Meanwhile, connection relation of optical network certainty annuity of the present invention does not need the light source outside independent of optical line terminal, can be cost-saving further.
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in a computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-OnlyMemory, ROM) or random store-memory body (RandomAccessMemory, RAM) etc.
Above disclosedly be only a kind of preferred embodiment of the present invention, certainly the interest field of the present invention can not be limited with this, one of ordinary skill in the art will appreciate that all or part of flow process realizing above-described embodiment, and according to the equivalent variations that the claims in the present invention are done, still belong to the scope that invention is contained.
Claims (15)
1. a connection relation of optical network defining method, is characterized in that, comprising:
Detect the first luminous power that each receiving equipment in region to be measured receives, wherein, described receiving equipment is optical line terminal or optical network device, and described first luminous power is the power that described receiving equipment receives signal;
Instruction bends the optical fiber be connected with port to be measured or testing fiber;
Detect the second luminous power that in described region to be measured, each receiving equipment receives, wherein, described second luminous power is the power that after described fibre-optical bending, described receiving equipment receives signal;
If the difference of the first luminous power that the first receiving equipment receives and the second luminous power is greater than threshold value or described first receiving equipment receives warning information, then determine described port to be measured or there is annexation between testing fiber and described first receiving equipment.
2. method according to claim 1, it is characterized in that, described port to be measured is the port of port in the port of fibre distribution frame or the port of fiber cable cross connection box or optical fiber distributing box or the port of optical line terminal or the port of optical branching device or optical network unit.
3. method according to claim 1, it is characterized in that, described testing fiber is the optical fiber be connected with the port of the port in the port of fibre distribution frame or the port of fiber cable cross connection box or optical fiber distributing box or the port of optical line terminal or the port of optical branching device or optical network unit.
4. method according to claim 1, is characterized in that, the signal of described signal for sending when carrying out normal communications traffic between transmitting apparatus and receiving equipment.
5. the method according to the arbitrary claim of Claims 1-4, is characterized in that, described optical network device is Optical Network Terminal or optical network unit.
6. a management equipment, is characterized in that, comprising:
Detection module, for the first luminous power that each receiving equipment detected in region to be measured receives, wherein, described receiving equipment is optical line terminal or optical network device, described first luminous power is the power that described receiving equipment receives signal, and described first luminous power is sent to described judging module by described detection module;
Indicating module, is used to indicate and bends the optical fiber be connected with port to be measured or testing fiber;
Described detection module, also for detecting the second luminous power that in described region to be measured, each receiving equipment receives, wherein, described second luminous power is the power that after described fibre-optical bending, described receiving equipment receives signal, and described second luminous power is sent to described judging module by described detection module;
Judge module, for receiving described first luminous power and described second luminous power, when the first luminous power of the first receiving equipment reception and the difference of the second luminous power are greater than threshold value or described first receiving equipment receives warning information, determine described port to be measured or there is annexation between testing fiber and described first receiving equipment.
7. management equipment according to claim 6, it is characterized in that, described port to be measured is the port of port in the port of fibre distribution frame or the port of fiber cable cross connection box or optical fiber distributing box or the port of optical line terminal or the port of optical branching device or optical network unit.
8. management equipment according to claim 6, it is characterized in that, described testing fiber is the optical fiber be connected with the port of the port in the port of fibre distribution frame or the port of fiber cable cross connection box or optical fiber distributing box or the port of optical line terminal or the port of optical branching device or optical network unit.
9. management equipment according to claim 6, is characterized in that, the signal of described signal for sending when carrying out normal communications traffic between transmitting apparatus and receiving equipment.
10. the management equipment according to the arbitrary claim of claim 6 to 9, is characterized in that, described optical network device is Optical Network Terminal or optical network unit.
11. 1 kinds of optical network systems, is characterized in that, comprising: management equipment, bending apparatus, multiple receiving equipment, wherein pass through Fiber connection between multiple receiving equipment,
The first luminous power that described management equipment receives for each receiving equipment detected in region to be measured, wherein, described receiving equipment is optical line terminal or optical network device, and described first luminous power is the power that described receiving equipment receives signal;
Described management equipment is also used to indicate and bends the optical fiber be connected with port to be measured or testing fiber;
Described bending apparatus is used for bending the optical fiber be connected with port to be measured or testing fiber according to instruction;
Described management equipment is also for detecting the second luminous power that in described region to be measured, each receiving equipment receives, and wherein, described second luminous power is the power that after described fibre-optical bending, described receiving equipment receives signal;
Described management equipment also for when the difference of the first luminous power that the first receiving equipment receives and the second luminous power is greater than threshold value or described first receiving equipment receives warning information, is determined described port to be measured or be there is annexation between testing fiber and described first receiving equipment.
12. systems according to claim 11, it is characterized in that, described port to be measured is the port of port in the port of fibre distribution frame or the port of fiber cable cross connection box or optical fiber distributing box or the port of optical line terminal or the port of optical branching device or optical network unit.
13. systems according to claim 11, it is characterized in that, described testing fiber is the optical fiber be connected with the port of the port in the port of fibre distribution frame or the port of fiber cable cross connection box or optical fiber distributing box or the port of optical line terminal or the port of optical branching device or optical network unit.
14. systems according to claim 11, is characterized in that, the signal of described signal for sending when carrying out normal communications traffic between transmitting apparatus and receiving equipment.
15., according to claim 11 to the system described in 14 arbitrary claims, is characterized in that, described optical network device is Optical Network Terminal or optical network unit.
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| CN201410393176.8A CN105337656B (en) | 2014-08-12 | 2014-08-12 | A kind of connection relation of optical network determines method, equipment and system |
| PCT/CN2015/070336 WO2016023331A1 (en) | 2014-08-12 | 2015-01-08 | Method, device and system for determining optical network connection relationship |
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| CN116545864A (en) * | 2023-07-06 | 2023-08-04 | 国网浙江省电力有限公司湖州供电公司 | Data processing method and platform suitable for optical cable line management system |
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| CN108512595A (en) * | 2017-02-27 | 2018-09-07 | 中兴通讯股份有限公司 | A kind of acquisition methods and device of PON network resource data |
| CN112615669A (en) * | 2020-11-24 | 2021-04-06 | 深圳市宇虹飞科技有限公司 | Optical fiber link monitoring system |
| CN115065412B (en) * | 2022-06-02 | 2024-03-19 | 中国电信股份有限公司 | OLP (on-line performance) switching verification method and related device |
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| CN101964680A (en) * | 2009-07-23 | 2011-02-02 | 华为技术有限公司 | System and method for recognizing ports and method for positioning fault |
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| CN111327975A (en) * | 2019-10-23 | 2020-06-23 | 华为技术有限公司 | Port detection method, optical network equipment and passive optical network system |
| WO2021077890A1 (en) * | 2019-10-23 | 2021-04-29 | 华为技术有限公司 | Port detection method, optical network device and passive optical network system |
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| CN113347513A (en) * | 2019-10-23 | 2021-09-03 | 华为技术有限公司 | Port detection method, optical network equipment and passive optical network system |
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| CN105337656B (en) | 2018-01-23 |
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