WO2016023331A1

WO2016023331A1 - Method, device and system for determining optical network connection relationship

Info

Publication number: WO2016023331A1
Application number: PCT/CN2015/070336
Authority: WO
Inventors: 殷锦蓉; 赵峻
Original assignee: 华为技术有限公司
Priority date: 2014-08-12
Filing date: 2015-01-08
Publication date: 2016-02-18
Also published as: CN105337656B; CN105337656A

Abstract

Disclosed are a method, device and system for determining an optical network connection relationship. The method comprises: detecting a first optical power received by each receiving device in a region to be detected, wherein the receiving device is an optical line terminal or an optical network device, and the first optical power is the power of a signal received by the receiving device; instructing to bend an optical fibre connected to a port to be detected or an optical fibre to be detected; detecting a second optical power received by each receiving device in the region to be detected, wherein the second optical power is the power of a signal received by the receiving device after the optical fibre is bent; and if the difference between the first optical power and the second optical power which are received by a first receiving device is greater than a threshold value, or the first receiving device receives alarm information, determining that there is a connection relationship between the port to be detected or the optical fibre to be detected and the first receiving device. The present invention can quickly and conveniently determine an optical network connection relationship.

Description

Method, device and system for determining optical network connection relationship

Technical field

The present invention relates to the field of optical networks, and in particular, to a method, device, and system for determining an optical network connection relationship.

Background technique

As users' demand for bandwidth continues to increase, traditional copper broadband access systems are increasingly unable to meet the needs of users. At the same time, fiber-optic communication technologies with huge bandwidth capacity are becoming more mature, and application costs are declining year by year. Become a strong competitor of the next generation broadband access network. Among them, the passive optical network is one of the optical access networks. As shown in FIG. 1 , the passive optical network in this embodiment includes an optical line terminal (OLT) 110, an optical distribution network 120, and an optical network device 130. The optical network device 130 may be an Optical Network Termination (ONT) or an Optical Network Unit (ONU). The optical distribution network 120 is generally composed of passive components such as a backbone optical fiber, an optical splitter 121, and a split optical fiber. The trunk optical fiber is connected to the OLT and the optical splitter 121, and the optical splitter 121 is connected to the optical network device 130 through a split optical fiber.

For ease of construction, management, and maintenance, the optical distribution network 120 is typically located in an Optical Distribution Frame (ODF), a Fiber Distribution Terminal (FDT), and a Fiber Access Terminal (FAT). The splicing of the optical fiber is carried out by means of a movable connector, a cold connector connection or a fusion splicer. The traditional optical distribution network usually uses a paper label to identify the connection relationship of the optical fiber link, that is, a paper label is attached to the optical fiber, and the paper label indicates the number of the optical line terminal from which the optical fiber comes from, and the optical fiber distribution frame from which the optical fiber comes. Port number, the port number of the cable transfer box from which the fiber is coming from, the port number of the fiber distribution box from which the fiber comes from, the port number of the fiber distribution frame to which the fiber will be connected, and the cable transfer box to which the fiber will be connected The port number, at least one of the port number of the fiber splitter to which the fiber will be connected, and the number of optical network units to which the fiber will be connected. However, after a long period of use, the paper label may be damaged, or the maintenance worker does not modify the paper label after changing the port connection relationship, resulting in a messy port connection relationship on the fiber link. When it is necessary to open a new service or need to upgrade the network or the network needs to be repaired, an effective means is needed to identify the connection relationship of the fiber link to quickly complete the connection and tracking of the corresponding fiber link.

Therefore, the prior art provides a method for determining an optical network connection relationship, which includes a light source device and A fiber-optic identifier, in which a light source device can inject a specific signal into a fiber, such as a direct current signal or a signal of a specific frequency, and the fiber identifier provides a fiber slot to bend the fiber, and detects a light leakage signal caused by the bending of the fiber, and determines the reception. Whether the signal is the signal injected into the fiber by the light source device, and if so, it can be determined that the light source device and the fiber identifier operate on the same fiber. The specific use process is that an operator connects the light source device to the fiber to be identified on the side of the office, and transmits a specific signal to the optical fiber for transmission, and simultaneously informs the remote detecting personnel of the signal transmitted by the remote, and the remote detecting personnel will A plurality of optical fibers are connected to the optical fiber identification device to detect whether there is a signal transmitted by the light source device. If the transmitted signal can be detected, it indicates that the two operators operate the same optical fiber, thereby completing the identification of the optical fiber. The prior art has the following disadvantages:

In the process of detection, an operator is required to inject a specific optical signal into the fiber to be tested on the side of the office, and another operator needs to find a specific optical signal in a plurality of optical fibers at the same time using a fiber identifier at the remote end. The optical fiber, the two cooperate to complete the tracking and positioning of the optical fiber. After each fiber is identified, the two ends need to switch at the same time to continue the identification of other fibers. The physical link length of the fiber network can be up to 20km, which will bring difficulties to the cooperation of two operators. It is easy to lead to misjudgment, and labor costs are large. In addition, in the identification process, after the local operator inputs a specific optical signal into a fiber to be tested, the remote operator needs to search for the optical signal in the far-end fiber one by one until the specific optical signal injected by the central office is found. ,low efficiency.

Summary of the invention

The technical problem to be solved by the embodiments of the present invention is how to solve the problem of low efficiency and high cost of testing the optical fiber connection state in the prior art.

In a first aspect, the embodiment of the present invention provides a method for determining an optical network connection relationship, including: detecting a first optical power received by each receiving device in an area to be tested, where the receiving device is an optical line terminal or light The network device, the first optical power is the power of the receiving device, and indicates that the optical fiber connected to the port to be tested is bent or the optical fiber to be tested is bent; and the first receiving device in the area to be tested is detected. The second optical power, wherein the second optical power is the power of the receiving device after the optical fiber is bent; if the difference between the first optical power and the second optical power received by the first receiving device is greater than a threshold or The first receiving device receives the alarm information, and determines that there is a connection relationship between the port to be tested or the optical fiber to be tested and the first receiving device.

With reference to the first aspect, in the first possible implementation manner of the first aspect of the present application, the to-be-tested end The port is the port of the fiber distribution frame or the port of the cable transfer box or the port in the fiber distribution box or the port of the optical line terminal or the port of the optical splitter or the port of the optical network unit.

With reference to the first aspect, in a second possible implementation manner of the first aspect of the present application, the optical fiber to be tested is a port of a fiber distribution frame or a port of a fiber optic cable transfer box or a port or an optical line in the fiber distribution box. The port of the terminal or the port of the optical splitter or the optical fiber of the port of the optical network unit.

In conjunction with the first aspect, in a third possible implementation manner of the first aspect of the present application, the signal is a signal that is sent when a normal communication service is performed between the sending device and the receiving device.

With reference to the first aspect to any one of the third possible implementation manners of the first aspect, in the fourth possible implementation manner of the first aspect, the optical network device is an optical network terminal or a light Network unit.

In a second aspect, the embodiment of the present invention provides a management device, including: a detection module, configured to detect a first optical power received by each receiving device in an area to be tested, where the receiving device is an optical line terminal or The optical network device, the first optical power is the power of the receiving device, the detecting module sends the first optical power to the determining module, and the indicating module is configured to indicate the pair and the port to be tested. The connected optical fiber or the optical fiber to be tested is bent; the detecting module is further configured to detect a second optical power received by each receiving device in the area to be tested, wherein the second optical power is after the optical fiber is bent The receiving device receives the power of the signal, the detecting module sends the second optical power to the determining module, and the determining module is configured to receive the first optical power and the second optical power, when the first Determining the port to be tested or the fiber to be tested and the first one when the difference between the first optical power and the second optical power received by the receiving device is greater than a threshold or the first receiving device receives the alarm information Connection relation exists between the receiving apparatus.

With reference to the second aspect, in a first possible implementation manner of the second aspect of the present application, the port to be tested is a port of a fiber distribution frame or a port of a cable delivery box or a port or an optical line terminal in a fiber distribution box Port or optical splitter port or optical network unit port.

With reference to the second aspect, in a second possible implementation manner of the second aspect of the present application, the optical fiber to be tested is a port or an optical fiber distribution box port or an optical fiber distribution box port or an optical line in the optical fiber distribution box The fiber of the port of the terminal or the port of the optical splitter or the port of the optical network unit.

With reference to the second aspect, in a third possible implementation manner of the second aspect of the present application, the signal is a signal that is sent when a normal communication service is performed between the sending device and the receiving device.

With reference to any one of the second aspect to the third possible implementation manner of the second aspect, in the fourth possible implementation manner of the second aspect, the optical network device is an optical network terminal or a light Network unit.

In a third aspect, an embodiment of the present invention provides an optical network system, including: a management device, a bending device, and a plurality of receiving devices, wherein the plurality of receiving devices are connected by an optical fiber, and the management device is configured to detect the area to be tested. The first optical power received by each receiving device, wherein the receiving device is an optical line terminal or an optical network device, and the first optical power is power of the receiving device receiving the signal; the management device further And the bending device is configured to bend the optical fiber or the optical fiber to be tested connected to the port to be tested according to the indication; the management device is further configured to detect the a second optical power received by each receiving device in the area to be tested, wherein the second optical power is power of the receiving device after the optical fiber is bent; the management device is further used to be the first Determining the port to be tested or the light to be tested when the difference between the first optical power and the second optical power received by the receiving device is greater than a threshold or the first receiving device receives the alarm information Connection relationship exists between the first receiving device.

With reference to the third aspect, in a first possible implementation manner of the third aspect of the present application, the port to be tested is a port of a fiber distribution frame or a port of a cable delivery box or a port or an optical line terminal in a fiber distribution box. Port or optical splitter port or optical network unit port.

With reference to the third aspect, in a second possible implementation manner of the third aspect of the present application, the optical fiber to be tested is a port of a fiber distribution frame or a port of a fiber optic cable, or a port or an optical line in the fiber distribution box. The fiber of the port of the terminal or the port of the optical splitter or the port of the optical network unit.

In conjunction with the third aspect, in a third possible implementation manner of the third aspect, the signal is a signal that is sent when a normal communication service is performed between the sending device and the receiving device.

With reference to any one of the third aspect to the third possible implementation manner of the third aspect, in the fourth possible implementation manner of the third aspect, the optical network device is an optical network terminal or a light Network unit.

In the foregoing solution, the difference between the first optical power and the second optical power received by the first receiving device may be greater than a threshold according to the bending and the bending of the optical fiber connected to the port, thereby determining the port connected to the optical fiber or the optical fiber to be tested. There is a connection relationship between the first devices. By implementing the embodiment of the present invention, the first optical power sent by the receiving device is obtained at the same time, and then the first optical power of the receiving device is automatically determined. The difference between the second optical power and the second optical power is greater than a threshold, thereby quickly determining that there is a connection relationship between the port connected to the optical fiber or the optical fiber to be tested and the first device.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic structural diagram of an implementation manner of a prior art passive optical network;

2 is a schematic structural diagram of an embodiment of an optical network system according to the present invention;

3 is a schematic structural view of an embodiment of an optical fiber connection in an optical network system according to the present invention;

4 is a schematic structural diagram of a to-be-tested port or an optical fiber to be tested in the optical fiber connection manner shown in FIG. 3;

5 is a flowchart of an embodiment of a method for determining an optical network connection relationship according to the present invention;

6 is a schematic structural diagram of an embodiment of a management device of the present invention;

7 is a schematic structural view of another embodiment of a management device of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It is to be understood that the terminology used in the embodiments of the present invention is for the purpose of describing the particular embodiments, and is not intended to limit the invention. The singular forms "a", "the" and "the" It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

Referring to FIG. 2, FIG. 2 is a schematic structural diagram of an embodiment of an optical network system according to the present invention. The system of the present embodiment includes an optical line terminal 110, an optical distribution network 120, an optical network device 130, a management device 140, and a bending device 150. The receiving device may be an optical line terminal 110 or an optical network device 130, and the bending device 150 may be an optical fiber bender (iFiberBender). Optical network device 130 can be Optical network terminal or optical network unit. The optical distribution network 120 is generally composed of passive components such as a backbone optical fiber, an optical splitter 121, and a split optical fiber. The trunk optical fiber is connected to the OLT and the optical splitter 121, and the optical splitter 121 is connected to the optical network device 130 through a split optical fiber. The management device 140 can connect the optical line terminal 110 directly or through an internetwork.

Because of the distance between the optical line terminal 110 and the optical splitter 121, the optical splitter 121 and the optical network device 130 may be far away. For ease of construction, management, and maintenance, the optical distribution network 120 is typically in the fiber distribution frame 122, The optical fiber cable is connected to the optical fiber cable transfer box 123 and the optical fiber distribution box 124. For example, as shown in FIG. 3, the port on the optical line termination 110 is connected to the first port of the first fiber distribution frame 122 through the first optical fiber, and the first port of the first optical distribution frame 122 is connected to the second optical fiber through the second optical fiber. The first port of the second fiber distribution frame 122, the first port of the second fiber distribution frame 122 is connected to the first port of the cable transfer box 123 through the third optical fiber, and the first port of the cable transfer box 123 passes through the fourth optical fiber. Connected to the input port of the optical splitter 121, the first output port of the optical splitter 121 is connected to the first port in the fiber splitter box 124 through the fifth optical fiber, and the first port in the fiber splitter box 124 passes the first port The six fibers are connected to the ports of the optical network device 130, thereby forming a fiber link from the optical line terminal 110 to the optical network device 130.

During the construction of the optical network, the service issuance, and the related maintenance process, the connection between the port on the optical link to be constructed, service, and maintenance and the optical line terminal 110 and/or the optical network device 130 needs to be identified, and The connection relationship between the optical fibers on the optical link and the optical line terminal 110 and/or the optical network device 130 for subsequent construction operations, link quality detection, and evaluation of the optical fiber link. Of course, in some cases, it may only be necessary to identify the connection relationship between the ports on the optical link and the optical line termination 110 and/or the optical network device 130, or simply identify the optical and optical line terminations 110 and/or on the optical link. Or the connection relationship of the optical network device 130. The port to be identified is the port to be tested, and the fiber to be identified is the fiber to be tested. The port to be tested may be a port of the fiber distribution frame 122, a port of the cable delivery box 123, a port in the fiber distribution box 124, a port of the optical line terminal 110, a port of the optical splitter 121, or an optical network device 130. Port and so on. The fiber to be tested is a port with the fiber distribution frame 122, a port of the cable delivery box 123, a port in the fiber distribution box 124, a port of the optical line terminal 110, a port of the optical splitter 121, or an optical network device 130. The port is connected to the fiber and so on.

When it is necessary to determine the connection relationship of the port to be tested or the optical fiber, the management device 140 sends a command or measurement for measuring the downlink received optical power of the optical network device 130 to all the optical line terminals 110 in the area to be tested. The optical line terminal 110 receives a command of the optical power of the uplink optical signal transmitted by the optical network device 130. After receiving the command, the optical line terminal 110 in the area to be tested instructs the corresponding optical network device 130 to measure the optical power of the received downlink signal or directly to the received uplink optical signal sent by the corresponding optical network device 130. The optical power is measured to obtain a first optical power. Then, the optical line terminal 110 transmits the measured first optical power to the management device 140. After receiving the first optical power, the management device 140 instructs the constructor to bend the optical fiber or the optical fiber to be tested connected to the port to be tested. Wherein, the indication may be sent to the mobile terminal held by the construction worker via the wireless network or directly to the display screen of the bending device 150. The construction worker bends the optical fiber or the optical fiber to be tested connected to the port to be tested according to the indication by the bending device 150, and feeds back the information of the bent optical fiber to the management system 140. The management system 140 sends a measurement command to all the optical line terminals 110 in the area to be tested again. After receiving the measurement command, the optical network device 130 in the area to be tested again instructs the corresponding optical network device 130 to receive the downlink signal. The optical power is measured or directly measured on the received optical power of the uplink optical signal transmitted by the corresponding optical network device 130, thereby obtaining a second optical power. Then, the optical line terminal 110 transmits the measured second optical power to the management device 140. After receiving the second optical power, the management device 140 compares the received first optical power with the second optical power. If the downlink signal received by the optical network device 130 of a certain optical line terminal 110 or the received difference between the first optical power and the second optical power of the uplink optical signal sent by the corresponding optical network device 130 is greater than a threshold, There is a connection relationship between the measurement port or the optical fiber to be tested and the optical line terminal 110 and the optical network device 130. After receiving the measurement command, the optical line terminal 110 instructs the corresponding optical network device 130 to measure the optical power of the received downlink signal through the management channel between the optical line terminal 110 and the optical network device 130 (eg, GPON). The OMCI channel, the OAM channel of the EPON, the optical line terminal 110 notifies the optical network device 130 to complete the optical power measurement of the received downlink signal through the management channel, and the optical network device 130 reports the optical power to the optical circuit through the management channel. Terminal 110. For example, as shown in FIG. 4, if the threshold is 1 dB (decibel), the port to be measured is the first port of the first fiber distribution frame, and first all optical line terminals in the area to be tested complete the first optical power measurement. The obtained first optical power is respectively: optical network device 1: -25.1 dBm, optical network device 2: -25.8 dBm, optical network device 3: -23.8 dBm, and optical network device 4: -24.4 dBm. Then, the optical fiber connected to the first port of the first optical fiber distribution frame is bent, and all optical line terminals in the area to be tested complete the second optical power measurement, and the obtained second optical power is respectively optical network device 1:-26.3 dBm, light Network device 2: -26.9dBm, Optical network equipment 3: -23.6 dBm and optical network equipment 4: -24.5 dBm. Then, the difference between the first optical power and the second optical power is: optical network device 1: 1.2 dB, optical network device 2: 1.1 dB, optical network device 3: -0.2 dB, and optical network device 4: 0.1 dB. The difference between the first optical power and the second optical power of the optical network device 1 and the optical network device 2 connected to the optical line terminal 1 is greater than a threshold, and the optical network device 3 and the optical network device 4 connected to the optical line terminal 2 are first. The difference between the optical power and the second optical power is less than the threshold. According to the measurement error, the first port of the first optical distribution frame and the optical fiber and optical line terminal 1 connected thereto, and the optical network device 1 and the optical network can be determined. There is a connection relationship between devices 2. Similarly, if the fiber to be tested is an optical fiber connected to the first port of the first fiber distribution frame, the above method can also be used to obtain the fiber to be tested and the optical line terminal 1 and between the optical network device 1 and the optical network device 2 There is a connection relationship, and the details are not described here.

Optionally, if the loss caused by the curved optical fiber is too large, the communication between the optical line terminal 110 and the optical network device 130 is interrupted, and the measurement of the second optical power cannot be performed or the communication quality is seriously deteriorated, so that the second optical power cannot be reported. The optical line terminal 110 can detect the communication interruption alarm or the communication quality deterioration alarm of the optical network device 130, and report the alarm information to the management device 140. The management device 140 may determine that there is a connection relationship between the port to be tested and/or the optical fiber and the optical line terminal 110 and the optical network device 130 according to the alarm information. For example, as shown in FIG. 4, if the threshold is 1 dB (decibel), the port to be measured is the first port of the first fiber distribution frame, and first all optical line terminals in the area to be tested complete the first optical power measurement. The obtained first optical power is respectively: optical network device 1: -27.6 dBm, optical network device 2: -27.8 dBm, optical network device 3: -23.8 dBm, and optical network device 4: -24.4 dBm. Then, the optical fiber connected to the first port of the first optical fiber distribution frame is bent, and all optical line terminals in the area to be tested complete the second optical power measurement, and the received optical power exceeds the optical network device 1 and the optical network due to the link loss introduced by the curved optical fiber. The receiving sensitivity of the device 2, which in turn causes the communication between the optical line terminal 1 and the optical network device 1 and the optical network device 2 to be interrupted, and the second optical power cannot be obtained. At this time, the optical line terminal 1 can detect the optical network device 1 and the optical network device 2 The communication interruption alarm or the communication quality degradation alarm (such as LOS alarm, Loss of Signal), and the alarm information is reported to the management device. The second optical power of the optical network device 3 and the optical network device 4 are respectively optical network device 3: -23.6 dBm and optical network device 4: -24.5 dBm. Then, the difference between the first optical power and the second optical power is: optical network device 1::, optical network device 2: -, optical network device 3: -0.2 dB, and optical network device 4: 0.1 dB. Since the optical network device 1 and the optical network device 2 connected to the first optical line terminal OLT1 do not detect the second optical power, but There is a communication interruption alarm or a communication quality degradation alarm, and the difference between the first optical power and the second optical power of the optical network device 3 and the optical network device 4 connected to the second optical line terminal OLT2 is less than a threshold value, and the measurement error is met. It is judged that there is a connection relationship between the first port of the first fiber distribution frame and the optical fiber to which it is connected, the optical line terminal 1 and the optical network device 1 and the optical network device 2. Similarly, if the fiber to be tested is an optical fiber connected to the first port of the first fiber distribution frame, the above method can also be used to obtain the fiber to be tested and the optical line terminal 1 and between the optical network device 1 and the optical network device 2 There is a connection relationship, and the details are not described here.

Optionally, in order to improve the accuracy of the optical network connection relationship, after the second optical power measurement is completed, the management device 140 may send the measurement optical network device 130 to all the optical line terminals 110 in the area to be tested again after canceling the bending of the optical fiber. The downlink received optical power or the optical power command of the uplink optical signal transmitted by the optical network device 130 received by the optical line terminal 110 to obtain a third optical power, if the first optical power and the second optical obtained by an optical line terminal If the difference between the power is greater than the threshold, and the difference between the first optical power and the third optical power is less than the threshold, it is determined that there is a connection relationship between the port to be tested or the optical fiber to be tested and the optical line terminal 110 and the corresponding optical network device 130. Or, the optical power terminal does not normally obtain the second optical power, and detects a communication interruption alarm or a communication quality degradation alarm between the optical line terminal and the optical network unit connected thereto, but the third optical power can be normally obtained, first Determining the difference between the optical power and the third optical power is less than a threshold, and the communication interruption alarm or the communication quality degradation alarm between the optical line terminal and the optical network unit connected thereto is canceled, and determining the port to be tested or the optical fiber to be tested and the optical line There is a connection relationship between the terminal 110 and the corresponding optical network device 130.

When constructing the port and/or the optical fiber on the trunk link, all optical line terminals in the area to be tested may be instructed to measure the optical power of the received downlink signal to all optical network devices connected thereto or directly to all The optical power of the uplink optical signal sent by the optical network device is separately measured; in order to improve the efficiency, when the port and/or the optical fiber on the trunk link are constructed, all optical line terminals in the area to be tested may also be connected to the optical line terminal. An optical network device measures the optical power of the received downlink signal or directly measures the optical power of the uplink optical signal sent by an optical network device; and when the port of the optical splitter is constructed, it may indicate All the optical line terminals in the area to be tested measure the optical power of the received downlink signal or directly measure the optical power of the uplink optical signal sent by all the optical network devices. Alternatively, the input port of the optical splitter can be measured to determine the optical line terminal to which the optical splitter is connected, and then directly The final line shows The terminal measures the optical power of the downlink signal received by all the optical network devices connected thereto or directly measures the optical power of the uplink optical signal sent by all the optical network devices.

It can be understood that, in order not to affect the normal communication of the user who is using the network, when the connection relationship is determined for the port to be tested on the fiber link that is communicating, the signal for performing the power measurement may be between the transmitting device and the receiving device. The signal sent when performing normal communication services. When the connection relationship is determined on the port to be tested on the fiber link that is not in communication, the command may be sent to the sending device, so that the sending device sends the test signal. At this time, the signal for performing the power measurement is the test signal.

In addition, the setting of the threshold may be set according to the empirical value and the loss of the optical fiber link, which is not specifically limited in the present invention.

In the foregoing solution, the difference between the first optical power and the second optical power received by the first receiving device may be greater than a threshold according to the optical fiber connected to the port to be tested or the optical fiber to be tested before and after bending, thereby automatically determining the connection with the optical fiber. There is a connection between the port to be tested or the fiber to be tested and the first device. By implementing the embodiments of the present invention, the optical network connection relationship can be determined simply and conveniently. Only one detection operator can complete the actual operation process, which reduces the complexity of the operation and reduces the labor cost. At the same time, the optical network connection relationship determining system of the present invention does not need to be independent of the light source device other than the optical line terminal, which can further save costs.

Referring to FIG. 5, FIG. 5 is a flowchart of an embodiment of a method for determining an optical network connection relationship according to the present invention. The method includes:

510: Detect a first optical power received by each receiving device in the area to be tested.

When it is required to determine the connection relationship between the port to be tested or the optical fiber, the management device sends a command for measuring the downlink received optical power of the optical network device to all optical line terminals in the area to be tested or the optical network device received by the optical line terminal. The command of the optical power of the upstream optical signal. After receiving the command, the optical line terminal in the area to be tested instructs the corresponding optical network device to measure the optical power of the received downlink signal or directly perform the optical power of the received uplink optical signal sent by the corresponding optical network device. Measured to obtain a first optical power. Then, the optical line terminal transmits the measured first optical power to the management device.

It can be understood that, in order not to affect the normal communication of the user who is using the network, for the fiber link having communication, the signal for performing power measurement may be a signal sent when the normal communication service is performed between the transmitting device and the receiving device. For fiber links that do not communicate, can be sent to the transmitting device Sending a command causes the transmitting device to send a test signal. At this time, the signal for performing power measurement is a test signal.

520: Bending the optical fiber or the optical fiber to be tested connected to the port to be tested.

Specifically, since the optical line terminal and the optical splitter, the distance between the optical splitter and the optical network device may be very long, in order to facilitate construction, management, and maintenance, the optical distribution network is usually in the optical fiber distribution frame and the optical cable transfer box. The fiber is connected to the fiber distribution box. For example, as shown in FIG. 3, the port on the optical line terminal is connected to the first port of the first fiber distribution frame through the first optical fiber, and the first port of the first optical distribution frame is connected to the second optical fiber through the second optical fiber. a first port of the distribution frame, the first port of the second fiber distribution frame is connected to the first port of the cable transfer box through the third optical fiber, and the first port of the cable transfer box is connected to the optical splitter through the fourth optical fiber An input port, the first output port of the optical splitter is connected to the first port in the fiber splitter box through the fifth fiber, and the first port in the fiber splitter box is connected to the port of the optical network unit through the sixth fiber, thereby A fiber optic link from the optical line termination to the optical network unit is formed.

In the process of optical network construction, service distribution, and related maintenance, it is first necessary to identify the connection between the port on the optical link to be constructed, serviced, and maintained, and the optical line terminal and/or optical network device, and the optical chain. The connection relationship between the optical fiber on the road and the optical line terminal and/or optical network equipment, so as to carry out the construction operation, link quality detection and evaluation of the optical fiber link. Of course, in some cases, it may only be necessary to identify the connection between the port on the optical link and the optical line terminal and/or the optical network device, or simply identify the optical fiber and optical line termination and/or optical network on the optical link. The connection relationship of the device. The port to be identified is the port to be tested, and the fiber to be identified is the fiber to be tested. The port to be tested may be a port of a fiber distribution frame, a port of a fiber optic cable transfer box, a port in an optical fiber distribution box, a port of an optical line terminal, a port of an optical splitter, or a port of an optical network unit, and the like. The optical fiber to be tested is a port connected to the optical fiber distribution frame, a port of the optical fiber cable transfer box, a port in the optical fiber distribution box, a port of the optical line terminal, a port of the optical splitter, or an optical fiber connected to the port of the optical network unit. Wait.

After receiving the first optical power, the management device instructs to bend the optical fiber or the optical fiber to be tested connected to the port to be tested. Wherein, the indication can be sent to the mobile terminal held by the construction worker via the wireless network. The construction worker bends the optical fiber or the optical fiber to be tested connected to the port to be tested according to the indication, and feeds back the information of the bent optical fiber to the management system.

530: Detect a second optical power received by each receiving device in the area to be tested, where the second optical power It is the power that the receiving device receives the signal after the fiber is bent.

Specifically, after the optical fiber is bent, the management system sends a measurement command to all optical line terminals in the area to be tested again. After receiving the measurement command, the optical network device in the area to be tested again instructs the corresponding optical network device to receive the measurement. The optical power of the downlink signal is measured or the optical power of the received uplink optical signal sent by the corresponding optical network device is directly measured, thereby obtaining a second optical power. Then, the optical line terminal transmits the measured second optical power to the management device.

540: If the difference between the first optical power and the second optical power received by the first receiving device is greater than a threshold, determining that a connection relationship exists between the port to be tested and the first receiving device.

Specifically, after receiving the second optical power, the management device compares the received first optical power with the second optical power. If the downlink signal received by the optical network device of an optical line terminal or the received difference between the first optical power and the second optical power of the uplink optical signal sent by the corresponding optical network device is greater than a threshold, determining the port to be tested or There is a connection relationship between the optical fiber to be tested and the optical line terminal and the optical network device.

For example, as shown in FIG. 4, if the threshold is 1 dB (decibel), the port to be measured is the first port of the first fiber distribution frame, and first all optical line terminals in the area to be tested complete the first optical power measurement. The obtained first optical power is respectively: optical network device 1: -25.1 dBm, optical network device 2: -25.8 dBm, optical network device 3: -23.8 dBm, and optical network device 4: -24.4 dBm. Then, the optical fiber connected to the first port of the first optical fiber distribution frame is bent, and all optical line terminals in the area to be tested complete the second optical power measurement, and the obtained second optical power is respectively optical network device 1:-26.3 dBm, light Network device 2: -26.9 dBm, optical network device 3: -23.6 dBm, and optical network device 4: -24.5 dBm. Then, the difference between the first optical power and the second optical power is: optical network device 1: 1.2 dB, optical network device 2: 1.1 dB, optical network device 3: -0.2 dB, and optical network device 4: 0.1 dB. The difference between the first optical power and the second optical power of the optical network device 1 and the optical network device 2 connected to the first optical line terminal OLT1 is greater than a threshold, and the optical network device 3 and the optical network device connected to the second optical line terminal OLT2 are The difference between the first optical power and the second optical power of 4 is less than the threshold. According to the measurement error, it can be determined that the first port of the first optical distribution frame and the first optical line terminal OLT1 and the optical network device 1 and the optical network There is a connection relationship between devices 2.

Similarly, if the fiber to be tested is an optical fiber connected to the first port of the first fiber distribution frame, the optical fiber and optical line terminal 1 and the optical network device 1 and the optical network can be obtained by the above method. There is a connection relationship between the devices 2, and the details are not described here.

Optionally, if the loss caused by the curved optical fiber is too large, the communication between the optical line terminal and the optical network device is interrupted, and the measurement of the second optical power cannot be performed or the communication quality is seriously deteriorated, so that the second optical power cannot be reported. The line terminal can detect the communication interruption alarm or the communication quality deterioration alarm of the optical network device, and report the alarm information to the management device. The management device may determine, according to the alarm information, a connection relationship between the port to be tested or the optical fiber to be tested and the optical line terminal and the optical network device.

After receiving the measurement command, the optical line terminal instructs the corresponding optical network device to measure the power of the received downlink signal by using a management channel between the optical line terminal and the optical network device (eg, PON channel of GPON, EPON) The OAM channel, for example, the optical line terminal notifies the optical network device to complete the optical power measurement of the received downlink signal through the management channel, and the optical network device reports the optical power to the optical line terminal through the management channel.

It can be understood that, in order to improve the accuracy of the optical network connection relationship, after the second optical power measurement is completed, the management device can send the downlink of the measurement optical network device to all the optical line terminals in the area to be tested again after canceling the bending of the optical fiber. Receiving optical power or measuring an optical power command of an uplink optical signal sent by the optical network device received by the optical line terminal to obtain a third optical power, if a difference between the first optical power and the second optical power obtained by an optical line terminal is greater than The threshold value, and the difference between the first optical power and the third optical power is less than the threshold, determining that there is a connection relationship between the port to be tested or the optical fiber to be tested and the optical line terminal and the corresponding optical network device. Or, the optical power terminal does not normally obtain the second optical power, and detects a communication interruption alarm or a communication quality degradation alarm between the optical line terminal and the optical network unit connected thereto, but the third optical power can be normally obtained, first Determining the difference between the optical power and the third optical power is less than a threshold, and the communication interruption alarm or the communication quality degradation alarm between the optical line terminal and the optical network unit connected thereto is canceled, and determining the port to be tested or the optical fiber to be tested and the optical line There is a connection relationship between the terminal and the corresponding optical network device.

When constructing a port on the trunk link, all optical line terminals in the area to be tested may instruct all optical network devices connected to measure the optical power of the received downlink signal or directly transmit to all optical network devices. The optical power of the uplink optical signal is separately measured; in order to improve the efficiency, when constructing the port on the trunk link, all optical line terminals in the area to be tested may also indicate that an optical network device connected thereto receives the received The optical power of the downlink signal is measured or directly measured for the optical power of the uplink optical signal sent by an optical network device; and when the port of the optical splitter is constructed, all optical line terminals in the area to be tested indicate All incoming optical network devices are connected to the received downlink The optical power of the number is measured or directly measured for the optical power of the uplink optical signal transmitted by all the optical network devices; in order to improve the efficiency, the input port of the optical splitter may also be operated to determine the optical splitter The connected optical line terminal directly instructs the line terminal to measure the optical power of the downlink signal received by all the optical network devices connected thereto or directly measures the optical power of the uplink optical signal sent by all the optical network devices.

The foregoing describes the method of the embodiment of the present invention in detail. In the following, in order to facilitate the implementation of the above solution of the embodiment of the present invention, correspondingly, the related device for implementing the above solution is provided below.

Referring to FIG. 6, FIG. 6 is a schematic structural diagram of an embodiment of a management device according to the present invention. The management device 600 of the present embodiment includes: a detection module 610, an indication module 620, and a decision module 630.

The detecting module 610 is configured to detect a first optical power received by each receiving device in the area to be tested, where the receiving device is an optical line terminal or an optical network device, and the first optical power is the receiving device Receiving the power of the signal, the detection module 610 transmits the first optical power to the decision module 630.

The indication module 620 is configured to indicate that the optical fiber or the optical fiber to be tested connected to the port to be tested is bent or unbent.

The detecting module 610 is further configured to detect a second optical power received by each receiving device in the area to be tested, where the second optical power is a power that the receiving device receives the signal after the optical fiber is bent. The detecting module 610 sends the second optical power to the decision module 630.

The determining module 630 is configured to receive the first optical power and the second optical power, where a difference between the first optical power and the second optical power received by the first receiving device is greater than a threshold or the first receiving device receives When the alarm information is obtained, it is determined that there is a connection relationship between the port to be tested or the optical fiber to be tested and the first receiving device.

Optionally, the port to be tested is a port of a fiber distribution frame or a port of a cable delivery box or a port in an optical fiber distribution box or a port of an optical line terminal or a port of an optical splitter or a port of an optical network unit.

Optionally, the fiber to be tested is a port of a fiber distribution frame or a port of a fiber optic cable transfer box or a port in an optical fiber distribution box or a port of an optical line terminal or a port of an optical splitter or a port of an optical network unit. Connected fiber.

Optionally, the signal is a signal sent when a normal communication service is performed between the sending device and the receiving device.

Optionally, the optical network device is an optical network terminal or an optical network unit.

The device shown in FIG. 6 can perform various steps in the method shown in FIG. 5. For details, refer to FIG. 5 and related descriptions, and details are not described herein again.

Referring to FIG. 7, FIG. 7 is a schematic structural diagram of an embodiment of a management device according to the present invention. The management device 700 of the present embodiment includes a receiver 710, a transmitter 720, and a processor 730.

The receiver 710 is configured to receive the first optical power received by each receiving device in the area to be tested, where the receiving device is an optical line terminal or an optical network device, and the first optical power is received by the receiving device. The power of the signal.

The transmitter 720 is configured to instruct the bending device to bend the optical fiber/or the optical fiber to be tested connected to the port to be tested.

The receiver 710 is configured to receive a second optical power received by each receiving device in the area to be tested, where the second optical power is a power that the receiving device receives a signal after the optical fiber is bent.

The processor 730 is configured to determine the port to be tested or the fiber to be tested when the difference between the first optical power and the second optical power received by the first receiving device is greater than a threshold or the first receiving device receives the alarm information. There is a connection relationship with the first receiving device.

The management device 700 in this embodiment also includes a memory 740, which may include read only memory and random access memory, and provides instructions and data to the processor 730. A portion of the memory 740 may also include non-volatile random access memory (NVRAM).

Memory 740 stores the following elements, executable modules or data structures, or subsets thereof, or their extended sets:

Operation instructions: include various operation instructions for implementing various operations.

Operating system: Includes a variety of system programs for implementing various basic services and handling hardware-based tasks.

In the embodiment of the present invention, the processor 730 performs the above operations by calling an operation instruction stored in the memory 740, which can be stored in the operating system.

The processor 730 may also be referred to as a CPU (Central Processing Unit). Memory 740 can include read only memory and random access memory and provides instructions and data to processor 730. A portion of the memory 740 may also include non-volatile random access memory (NVRAM). In a specific application, the various components of the controller are coupled together by a bus system 750. The bus system 750 may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 750 in the figure.

The method disclosed in the foregoing embodiments of the present invention may be applied to the processor 730 or implemented by the processor 730. Processor 730 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 730 or an instruction in a form of software. The processor 730 described above may be a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or discrete hardware. Component. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. Software modules can be located in random access memory, flash memory, read-only storage , programmable read-only memory or electrically erasable programmable memory, registers, etc., are well-known storage media in the field. The storage medium is located in memory 740, and processor 730 reads the information in memory 740 and, in conjunction with its hardware, performs the steps of the above method.

The embodiment of the invention further discloses an optical network system, as shown in FIG. 2, which includes a management device, a bending device, and a plurality of receiving devices, wherein a plurality of receiving devices are connected by an optical fiber.

The management device is configured to detect a first optical power received by each receiving device in the area to be tested, where the receiving device is an optical line terminal or an optical network device, and the first optical power is received by the receiving device The power to the signal;

The management device is further configured to indicate that the optical fiber or the optical fiber to be tested connected to the port to be tested is bent;

The bending device is configured to bend the optical fiber or the optical fiber to be tested connected to the port to be tested according to the indication;

The management device is further configured to detect a second optical power received by each receiving device in the area to be tested, where the second optical power is a power that the receiving device receives a signal after the optical fiber is bent;

The management device is further configured to determine the port to be tested or the fiber to be tested when the difference between the first optical power and the second optical power received by the first receiving device is greater than a threshold or the first receiving device receives the alarm information. There is a connection relationship with the first receiving device. For the port to be tested and the fiber to be tested, refer to the description of the method embodiment, and details are not described herein.

One of ordinary skill in the art can understand that all or part of the process of implementing the foregoing embodiments can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. When executed, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

The above disclosure is only a preferred embodiment of the present invention, and of course, the scope of the present invention is not limited thereto, and those skilled in the art can understand all or part of the process of implementing the above embodiments, and according to the present invention. The equivalent changes required are still within the scope of the invention.

Claims

A method for determining an optical network connection relationship, comprising:

Detecting a first optical power received by each receiving device in the area to be tested, where the receiving device is an optical line terminal or an optical network device, and the first optical power is a power of the receiving device receiving the signal;

Instructing to bend the optical fiber or the optical fiber to be tested connected to the port to be tested;

Detecting a second optical power received by each receiving device in the area to be tested, where the second optical power is a power that the receiving device receives a signal after the optical fiber is bent;

Determining, by the first receiving device, that the difference between the first optical power and the second optical power is greater than a threshold, or the first receiving device receives the alarm information, determining the port to be tested or the optical fiber to be tested and the first receiving device There is a connection relationship between them.
The method according to claim 1, wherein the port to be tested is a port of a fiber distribution frame or a port of a cable delivery box or a port in an optical fiber distribution box or a port or an optical splitter of an optical line terminal. Port or port of an optical network unit.
The method according to claim 1, wherein the fiber to be tested is a port of a fiber distribution frame or a port of a fiber optic cable, or a port of an optical fiber distribution box or a port or optical branch of an optical line terminal. The fiber of the port or optical port of the optical network unit.
The method according to claim 1, wherein the signal is a signal transmitted when a normal communication service is performed between the transmitting device and the receiving device.
The method according to any one of claims 1 to 4, wherein the optical network device is an optical network terminal or an optical network unit.
A management device, comprising:

a detecting module, configured to detect a first optical power received by each receiving device in the area to be tested, where the receiving device is an optical line terminal or an optical network device, and the first optical power is received by the receiving device The power of the signal, the detecting module sends the first optical power to the decision module;

An indicating module, configured to indicate that the optical fiber or the optical fiber to be tested connected to the port to be tested is bent;

The detecting module is further configured to detect a second optical power received by each receiving device in the area to be tested, where the second optical power is a power that the receiving device receives the signal after the optical fiber is bent. The detecting module sends the second optical power to the decision module;

a determining module, configured to receive the first optical power and the second optical power, when a difference between a first optical power and a second optical power received by the first receiving device is greater than a threshold, or the first receiving device receives an alarm In the information, it is determined that there is a connection relationship between the port to be tested or the optical fiber to be tested and the first receiving device.
The management device according to claim 6, wherein the port to be tested is a port of a fiber distribution frame or a port of a cable delivery box or a port in an optical fiber distribution box or a port or optical branch of an optical line terminal. Port of the device or port of the optical network unit.
The management device according to claim 6, wherein the fiber to be tested is a port of a fiber optic patch panel or a port of a fiber optic cable, or a port of a fiber optic fiber distribution box or a port or optical line of an optical line terminal. The fiber of the port of the router or the port of the optical network unit.
The management device according to claim 6, wherein the signal is a signal transmitted when a normal communication service is performed between the transmitting device and the receiving device.
The management device according to any one of claims 6 to 9, wherein the optical network device is an optical network terminal or an optical network unit.
An optical network system, comprising: a management device, a bending device, and a plurality of receiving devices, wherein the plurality of receiving devices are connected by an optical fiber,

The management device is configured to detect a first optical power received by each receiving device in the area to be tested, where the receiving device is an optical line terminal or an optical network device, and the first optical power is received by the receiving device The power to the signal;

The management device is further configured to indicate that the optical fiber or the optical fiber to be tested connected to the port to be tested is bent;

The bending device is configured to bend the optical fiber or the optical fiber to be tested connected to the port to be tested according to the indication;

The management device is further configured to detect a second optical power received by each receiving device in the area to be tested, where the second optical power is a power that the receiving device receives a signal after the optical fiber is bent;

The management device is further configured to determine the port to be tested or the fiber to be tested when the difference between the first optical power and the second optical power received by the first receiving device is greater than a threshold or the first receiving device receives the alarm information. There is a connection relationship with the first receiving device.
The system according to claim 11, wherein the port to be tested is a port of a fiber distribution frame or a port of a cable delivery box or a port in an optical fiber distribution box or a port or optical splitter of an optical line terminal. Port or port of an optical network unit.
The system according to claim 11, wherein the optical fiber to be tested is a port of a fiber distribution frame or a port of a fiber optic cable, or a port or optical branch of a port or optical line terminal in a fiber distribution box. The fiber of the port or optical port of the optical network unit.
The system according to claim 11, wherein said signal is a signal transmitted when a normal communication service is performed between the transmitting device and the receiving device.
The system according to any one of claims 11 to 14, wherein the optical network device is an optical network terminal or an optical network unit.