A ring distribution data network

Abstract

The application discloses a circular power distribution data network, comprising a plurality of sites and a plurality of optical fiber links, each site is connected with a previous site and a next site through an optical fiber link respectively; wherein each site comprises an optical cross device, the optical cross device comprises a plurality of input ports and a plurality of output ports, each input port is connected with a corresponding output port; each input port of the optical cross device of each site is connected with an output port of the optical cross device of the previous site through an optical fiber link respectively, and each output port of the optical cross device of each site is connected with an input port of the optical cross device of the next site through an optical fiber link respectively. By controlling the optical cross device, the method for switching the Ethernet switch port is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication link management, and in particular to a ring power distribution data network. BACKGROUND

[0002] At present, with the development of power distribution automation construction, a large number of power distribution optical fiber communication lines are put into operation, and the power distribution data network covers a wider and wider area. Its characteristics are large number of optical cables, wide coverage, complex line, and difficult operation and maintenance. According to the traditional operation and maintenance mode, when a line fault occurs, fault positioning, fault site troubleshooting, fault repair and other work are difficult and time-consuming, and the loss caused to the communication link, especially the communication link carrying important communication services, is immeasurable, which seriously affects the reliable operation of the power distribution data network.

[0003] The existing power distribution data cannot isolate faults in time when a fault occurs, and the recovery time of a large fault will bring huge economic losses, and cannot guarantee the stable operation of the communication service. SUMMARY

[0004] The embodiment of the present application provides a ring power distribution data network, which can discover faults and quickly self-heal, reduce operation and maintenance costs, improve operation and maintenance efficiency, and ensure stable and reliable operation of important communication services.

[0005] To achieve the above-mentioned purpose, the first aspect of the embodiment of the present application provides a ring power distribution data network, which comprises a plurality of stations and a plurality of optical fiber links, each station is connected with the previous station and the next station through an optical fiber link;

[0006] Each station comprises an optical cross device, the optical cross device comprises a plurality of input ports and a plurality of output ports, each input port is connected with a corresponding output port; each input port of the optical cross device of each station is connected with an output port of the optical cross device of the previous station through an optical fiber link, and each output port of the optical cross device of each station is connected with an input port of the optical cross device of the next station through an optical fiber link; in each optical cross device, any input port can establish a connection relationship with other output ports and other input ports, and the optical power of each input port is uploaded for monitoring;

[0007] In the default state, the first input port and the first output port of the optical cross device in each station are connected, the first input port, the first output port and the optical fiber link connected with the first output port are responsible for the communication of the target service.

[0008] In a possible implementation manner of the first aspect, the first station is connected with the second station, and the second station is connected with the third station; the first station, the second station and the third station are all in the default state.

[0009] In a possible implementation of the first aspect, when the first input port of the third site optical cross-connect device is monitored to have abnormal optical power and the first input port of the second site optical cross-connect device has normal optical power, the optical fiber link core connected to the first input port of the third site optical cross-connect device is abnormal.

[0010] The instruction is issued to connect the first input port of the second site optical cross-connect device to the second output port of the second site optical cross-connect device, and to connect the second input port of the third site optical cross-connect device to the first output port of the second site optical cross-connect device.

[0011] In a possible implementation of the first aspect, when the first input port of the third site optical cross-connect device is monitored to have abnormal optical power and the first input port of the second site optical cross-connect device has normal optical power, the optical fiber link core connected to the first input port of the third site optical cross-connect device is abnormal.

[0012] The instruction is issued to connect the first input port of the second site optical cross-connect device to the second output port of the second site optical cross-connect device, and to connect the second input port of the third site optical cross-connect device to the first output port of the second site optical cross-connect device.

[0013] In a possible implementation of the first aspect, when each port of the third site optical cross-connect device is monitored to have abnormal optical power and each input port of the second site optical cross-connect device has normal optical power, the optical fiber link cores connected to the input ports of the third site optical cross-connect device are abnormal.

[0014] The instruction is issued to connect the first input port of the second site optical cross-connect device to the second input port of the second site optical cross-connect device, and to change the information flow direction of the second output port and the second input port in each site optical cross-connect device.

[0015] In a possible implementation of the first aspect, an Ethernet switch exists between the third site and the next site; the Ethernet switch includes a plurality of uplink ports and a plurality of downlink ports, and each uplink port is connected to a corresponding downlink port.

[0016] The third site is in a switching state, in which the first input port and the second output port of the third site optical cross-connect device are connected, and the second input port and the first output port of the third site optical cross-connect device are connected; in the third site, each output port of the third site optical cross-connect device is connected to a corresponding uplink port of the Ethernet switch, except for the first output port; and the downlink ports of the Ethernet switch are connected to corresponding input ports of the third site optical cross-connect device.

[0017] In a possible implementation of the first aspect, when the third station optical cross device first input port optical power is normal and the third station optical cross device second input port optical power is abnormal, a port of the Ethernet switch connected with the third station optical cross device second output port is faulty.

[0018] The instruction is issued to connect the third station optical cross device first input port with the optical cross device third output port, and the optical cross device third input port with the optical cross device first output port.

[0019] In a possible implementation of the first aspect, when the third station optical cross device first input port optical power is normal and other input port optical power is abnormal, the Ethernet switch as a whole is faulty.

[0020] The instruction is issued to connect the third station optical cross device first input port with the optical cross device first output port.

[0021] Compared with the prior art, the loop power distribution data network provided by the embodiment of the application utilizes the optical cross device with the optical fiber optical power monitoring function to monitor various fault scenarios of the power distribution data network, and has the ability of communication link fault self-healing: if the optical power of one optical fiber of the communication link is monitored to be abnormal, the corresponding station is automatically switched to the backup fiber core, the interrupted fiber core segment is isolated, and important business communication is ensured; if the optical power of all fiber cores of the communication link is monitored to be abnormal, it is judged that the communication cable is interrupted, and the communication link routing reorganization is realized by setting the optical cross device; if the fault point is monitored to be at a certain communication port of the Ethernet switch, the corresponding station is automatically switched to other available communication ports; if all ports of the Ethernet switch are monitored to be faulty, all services of the Ethernet switch are cut off, and the target service can be ensured to run normally. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a local structure schematic diagram of a loop power distribution data network provided by an embodiment of the application;

[0023] Figure 2 is a whole structure schematic diagram of a loop power distribution data network provided by an embodiment of the application;

[0024] Figure 3 is a switching principle diagram of an optical cross device provided by an embodiment of the application;

[0025] Figure 4 is a switching link schematic diagram of a corresponding station when a section of fiber core is interrupted provided by an embodiment of the application;

[0026] Figure 5 is a local switching link schematic diagram of a corresponding station when a section of optical cable is interrupted in an embodiment of the application;

[0027] Figure 6 is a whole schematic diagram of switching link of corresponding station when a section of optical cable is interrupted in an embodiment of the present application;

[0028] Figure 7 is a schematic diagram of a local structure of a ring power distribution data network containing an Ethernet switch in an embodiment of the present application;

[0029] Figure 8 is a whole schematic diagram of switching link of corresponding station when an Ethernet switch port is faulty in an embodiment of the present application;

[0030] Figure 9 is a whole schematic diagram of switching link of corresponding station when an Ethernet switch is faulty in an embodiment of the present application. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] Please refer to Figure 1 and Figure 2 , an embodiment of the present application provides a ring power distribution data network, which comprises a plurality of stations and a plurality of optical fiber links, each station is connected with a previous station and a next station through an optical fiber link.

[0033] Each station comprises an optical cross device, the optical cross device comprises a plurality of input ports and a plurality of output ports, each input port is connected with a corresponding output port; each input port of the optical cross device of each station is connected with an output port of the optical cross device of the previous station through an optical fiber link, and each output port of the optical cross device of each station is connected with an input port of the optical cross device of the next station through an optical fiber link; please refer to Figure 3 In each optical cross device, any input port can establish a connection relationship with other output ports and other input ports, and the optical power of each input port is uploaded and monitored.

[0034] In a default state, a first input port of the optical cross device in each station is connected with a first output port, the first input port, the first output port and an optical fiber link connected with the first output port are responsible for communication of target service.

[0035] Exemplarily, the first station is connected with the second station, and the second station is connected with the third station; the first station, the second station and the third station are all in the default state.

[0036] For example, when the first input port optical power of the third site optical cross device is abnormal and the first input port optical power of the second site optical cross device is normal, the fiber link core connected with the first input port of the third site optical cross device is abnormal.

[0037] The first input port of the second site optical cross device is connected with the second output port of the second site optical cross device, and the second input port of the third site optical cross device is connected with the first output port of the second site optical cross device.

[0038] For example, when the first input port optical power of the third site optical cross device is abnormal and the first input port optical power of the second site optical cross device is normal, the fiber link core connected with the first input port of the third site optical cross device is abnormal;

[0039] The first input port of the second site optical cross device is connected with the second output port of the second site optical cross device, and the second input port of the third site optical cross device is connected with the first output port of the second site optical cross device.

[0040] The embodiment provides a method for monitoring the optical power of a fiber core bearing important services in real time and switching to a backup fiber core in real time when the fiber core appears interruption fault. Taking three sites of a first site A, a second site B and a third site C as examples, the fiber core of an IN1 port bears important services, and the interruption position of the fiber core is between the B site and the C site, and the specific steps are as follows:

[0041] 1. A remote network management system sends configuration to each optical cross device of the three sites A, B and C, and defines the optical power value when the fiber core is interrupted;

[0042] 2. Each site optical cross device monitors the optical power of the IN1 port and other backup ports (IN2... INN) in real time;

[0043] 3. When the important service fiber core between the B site and the C site appears interruption fault, the optical power received by the IN1 port of the C site is abnormal, and the optical cross device of the C site feeds back abnormal information to the remote network management system in time;

[0044] 4. The remote network management system automatically sends instructions to switch the IN1 port of the B site to the OUT2 port and connect the IN2 port of the C site to the OUT1 port, realizes backup fiber core switching, and realizes the fault self-recovery function, as shown in the following figure. Figure 4

[0045] ​Exemplarily, when the monitoring shows that the optical power of each port of the third site optical cross device is abnormal and the optical power of each ingress port of the second site optical cross device is normal, the fiber link core connected with the ingress port of the third site optical cross device is abnormal;

[0046] The instruction is issued to connect the first ingress port of the second site optical cross device with the second ingress port of the second site optical cross device, and the information flow direction of the second ingress port and the second egress port in each site optical cross device is changed.

[0047] In the embodiment, referring to Figure 5 When the remote network management system monitors that the whole optical cable is interrupted, the communication link routing recombination is realized by controlling the optical cross device, and the specific process is as follows:

[0048] The remote network management system of the ring power distribution data network issues the configuration to each optical cross device of the first site A, the second site B and the third site C, and defines the optical power value of the site optical cross device port when the fiber core is interrupted. The optical power of the IN1 port and other standby ports (IN2…INN) of each site optical cross device is monitored in real time;

[0049] When the optical cable between the B site and the C site is interrupted, the optical power received by the IN1 port and other standby ports (IN2…INN) of the C site is abnormal, and the optical cross device of the C site timely feeds back the abnormal information to the remote network management system;

[0050] The remote network management system automatically issues the instruction to switch the IN1 port of the B site to the IN2 port, realizes the standby fiber core communication link routing loop recombination, and realizes the automatic self-healing function of the fault, as shown in Figure 5 After the switching, the communication sequence (information flow direction) of the power distribution data network is A→B→A→F→E→D→C, as shown in Figure 6 .

[0051] Exemplarily, referring to Figure 7 , the third site and the next site exist an Ethernet switch; the Ethernet switch comprises a plurality of upper connection ports and a plurality of lower connection ports, and each upper connection port is connected with a corresponding lower connection port;

[0052] The third site is in the switching state, at this time, the first ingress port and the second egress port of the third site optical cross device are connected, and the second ingress port and the first egress port of the third site optical cross device are connected; in the third site, except the first egress port, each egress port of the third site optical cross device is connected with an upper connection port of the Ethernet switch; and the lower connection ports of the Ethernet switch are connected with the ingress ports of the third site optical cross device.

[0053] When the Ethernet switch port carrying the service fails, the method for realizing Ethernet switch port switching by controlling the optical cross device comprises the following steps:

[0054] 1. Taking the third station, i.e. the C station, as an example, one optical cross device and one Ethernet switch with two groups or more groups of optical ports are configured in the station, and the default connection mode is as shown in the figure. Figure 7 The IN1 port of the optical cross device accesses the important service, and accesses the upper optical port 1 of the Ethernet switch through the OUT2 port. The lower optical port 3 accesses the IN2 port of the optical cross device, and the IN2 port switches to the OUT1 port.

[0055] 2. The remote network management system issues a configuration to the optical cross device, and defines the optical power value of the Ethernet switch port exception.

[0056] 3. The IN1 and IN2 ports monitor the input optical power in real time. If the IN1 input optical power is normal and the IN2 optical power input is abnormal, it indicates that the upper optical port 1 of the Ethernet switch exists an exception.

[0057] 4. The optical cross device automatically switches the IN1 port to the OUT3 port and switches the IN3 port to the OUT1 port, realizes the switching function of the switch port, and realizes the fault self-healing function, as shown in the figure. Figure 8

[0058] Exemplarily, when the first input port optical power of the third station optical cross device is normal and the second input port optical power of the third station optical cross device is abnormal, the port of the Ethernet switch connected with the second output port of the third station optical cross device fails.

[0059] An instruction is issued to connect the first input port of the third station optical cross device with the third output port of the optical cross device, and the third input port of the optical cross device with the first output port of the optical cross device.

[0060] Exemplarily, when the first input port optical power of the third station optical cross device is normal and the optical power of other input ports is abnormal, the Ethernet switch as a whole fails.

[0061] An instruction is issued to connect the first input port of the third station optical cross device with the first output port of the optical cross device.

[0062] When the Ethernet switch (all ports fail) carrying the service fails, the method for realizing Ethernet switch service isolation by controlling the optical cross device comprises the following steps:

[0063] 1. Taking the C station as an example, one optical cross device and one Ethernet switch with one group or more groups of optical ports are configured in the station, and the default connection mode is as shown in the figure.​Figure 7 The IN1 port of the optical cross device accesses the important service, accesses the upper optical port 1 of the Ethernet switch through the OUT2 port, and the lower optical port 3 accesses the IN2 port of the optical cross device. The IN2 port is switched to the OUT1 port;

[0064] 2. The remote network management system issues configuration to the optical cross device, and defines the abnormal optical power value of the Ethernet switch port;

[0065] 3. The IN1 and IN2 ports monitor the input optical power in real time. If the IN1 input optical power is normal and the IN2 optical power input is abnormal, it indicates that the upper optical port 1 of the Ethernet switch is abnormal;

[0066] 4. The optical cross device automatically switches the IN1 port to the OUT3 port, switches the IN3 port to the OUT1 port, and monitors the IN3 port optical power in real time, as shown in FIG. 4. Figure 8

[0067] 5. After the port switching, the optical power of the IN3 port is also abnormal, which indicates that the upper optical port 2 is also abnormal. In this way, if all optical ports of the Ethernet switch are abnormal, the IN1 port of the optical cross device is switched to the OUT1 port to realize service isolation of the Ethernet switch and ensure normal operation of other services, as shown in FIG. 5. Figure 9

[0068] Compared with the prior art, the ring power distribution data network provided by the embodiment of the present application uses the optical cross device with optical fiber optical power monitoring function to monitor various fault scenarios of the power distribution data network, and has the ability of communication link fault self-healing. If the optical power of one optical fiber of the communication link is monitored to be abnormal, the corresponding station is automatically switched to the standby core to isolate the interrupted core segment and ensure normal communication of important services. If the optical power of all cores of the communication link is abnormal, it is judged that the communication cable is interrupted, and the communication link routing is reorganized by setting the optical cross device. If the fault point is monitored to be at a certain communication port of the Ethernet switch, the corresponding station is automatically switched to other available communication ports. If all ports of the Ethernet switch are monitored to be faulty, all services of the Ethernet switch are cut off to ensure that the target service can operate normally. The above is the preferred embodiment of the present application. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principle of the present application, and these improvements and refinements are also regarded as the protection scope of the present application.​​

Claims

1. A ring-shaped power distribution data network, characterized in that, It includes multiple sites and multiple fiber optic links, with each site connected to the previous site and the next site via fiber optic links; Each site includes an optical cross-connect unit, which has multiple input ports and multiple output ports. Each input port is connected to a corresponding output port. Each input port of the optical cross-connect unit at each site is connected to an output port of the optical cross-connect unit at the previous site via an optical fiber link. Each output port of the optical cross-connect unit at each site is connected to an input port of the optical cross-connect unit at the next site via an optical fiber link. In each optical cross-connect unit, any input port can establish a connection relationship with other output ports and other input ports. The optical power of each input port is uploaded for monitoring. By default, the first input port and the first output port of the optical cross-connect device in each site are connected, and the first input port, the first output port and the optical fiber link connected to the first output port are responsible for the communication of the target service. The first station is connected to the second station, and the second station is connected to the third station; the first station, the second station, and the third station are all in a default state; An Ethernet switch exists between the third station and the next station; the Ethernet switch includes multiple uplink ports and multiple downlink ports, with each uplink port connected to a corresponding downlink port; The third station is in a switching state. At this time, the first input port and the second output port of the optical cross-connect device of the third station are connected, and the second input port and the first output port of the optical cross-connect device of the third station are connected. In the third station, except for the first output port, each output port of the optical cross-connect device of the third station is connected to an uplink port of the Ethernet switch. The downlink port of the Ethernet switch is connected to an input port of the optical cross-connect device of the third station.

2. The ring-shaped power distribution data network as described in claim 1, characterized in that, When the optical power at the first input port of the optical cross-connect device at the third site is abnormal and the optical power at the first input port of the optical cross-connect device at the second site is normal, the fiber core of the optical fiber link connected to the first input port of the optical cross-connect device at the third site is abnormal. The command is issued to connect the first input port of the second site optical cross-connect device to the second output port of the second site optical cross-connect device; and to connect the second input port of the third site optical cross-connect device to the second output port of the second site optical cross-connect device.

3. The ring-shaped power distribution data network as described in claim 1, characterized in that, When the optical power of each port of the optical cross-connect device at the third site is abnormal and the optical power of each input port of the optical cross-connect device at the second site is normal, the fiber cores of the optical fiber links connected to the input ports of the optical cross-connect device at the third site are all abnormal. The command is issued to connect the first input port of the second site optical cross-connect device to the second input port of the second site optical cross-connect device, thereby changing the information flow direction of the second output port and the second input port in each site optical cross-connect device.

4. The ring-shaped power distribution data network as described in claim 1, characterized in that, When the optical power of the first input port of the third site optical cross-connect device is normal and the optical power of the second input port of the third site optical cross-connect device is abnormal, the port of the Ethernet switch connected to the second output port of the third site optical cross-connect device is faulty. The command is issued to connect the first input port of the optical cross-connect device at the third station to the third output port of the optical cross-connect device, and the third input port of the optical cross-connect device to the first output port of the optical cross-connect device.

5. The ring-shaped power distribution data network as described in claim 1, characterized in that, When the optical power of the first input port of the optical cross-connect device at the third site is normal but the optical power of other input ports is abnormal, the Ethernet switch as a whole malfunctions. The command is issued to connect the first input port of the optical cross-connect device at the third station to the first output port of the optical cross-connect device.

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