JP3185710B2 - Automatic switching of order wire for MS shared protection ring system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an order wire switching control system, and more particularly, to an MS Shared Protocol.
The present invention relates to an automatic switching system for order wire communication lines in a ction Ring (MS Shared Protection Ring) system.

[0002]

2. Description of the Related Art MS shared protection ring (S
In order to perform order wire communication in a hardened protection ring (ordered ring) system, the order wire signal oscillates when making a round, and howling occurs.

For this reason, in the conventional method, it is necessary to disconnect the order wire communication line of the ring system manually at one place.

[0004]

However, in the method in which the order wire communication line is always manually cut at one point, if a failure occurs in a line other than the disconnected line, the line is disconnected between the disconnected line and the failed line. The isolated device is isolated from other devices and cannot perform order wire communication.

[0005] For this reason, it is necessary to manually reconnect the line that was initially cut, which requires man-hours and labor.

Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide an automatic order wire switching system for automatically performing line management of order wire communication.

[0007]

In order to achieve the above object, according to the present invention, each device constituting a ring is divided into a master device and a slave device, and an APS (Automatic) is provided.
In this case, the order wire communication line is switched according to the value of the (Protection Switching) byte. The order wire communication line can be automatically switched. More specifically, the present invention
The ring network system has multiple ring components.
The order wire is attached to each of these ring components.
Is connected, and one ring configuration device is ordered wire communication
Master device and order multiple other ring components.
Each of the ring components is a slave device for wire communication.
Is a two-way APS (Automatic Protecti
on Switching) signal and receives information for the own device ID.
AP that takes out only the information and sends other information as it is
S processing unit and an APS signal from the APS processing unit.
Select the APS required to switch the router wire communication line.
An APS monitor for passing switching information to a switching controller;
Switching information from the APS monitor and alarm processing in the device
Order wire communication line based on switching information from the
The switching control unit for controlling switching between the left and right switching units
And the order wire signal line by the alarm in the device
If it is necessary to switch
An in-device alarm detection processing unit for transmitting a control signal;
Order wire communication by a control command from the switching control unit
Before switching the line so that it is not connected internally and externally
A switching unit for the order wire communication line on the left side, and
A switching unit for the order wire communication line on the right side;
Be prepared with wires, and when there are no obstacles,
Disconnect either the right or left side of the wire signal
Prevents communication signals from oscillating
In the event of a failure, the ring components at both ends of the line
Using the APS signal for switching the main signal line,
Sends switching information to the ring devices facing each other
The master device monitors switching information of the main signal.
Switching from the disconnection to the connection of the order wire of the own device
Switch and secure order wire communication.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

In a preferred embodiment of the present invention, each device constituting a ring is divided into a master device and a slave device, and an APS (Automatic Protocol) is used.
In this case, the order wire communication line is automatically switched according to the value of the "action switching" byte. FIG. 1 is a diagram for explaining an embodiment of the present invention, and MS Sh to which the present invention is applied.
FIG. 1 is a diagram illustrating a configuration of an ared Protection Ring system.

Referring to FIG. 1, the ring network system comprises ring constituent devices 11 to 14, which are provided with order wires 110, 120, 130, 14 respectively.
0 is connected, the device 11 is a master device for orderwire communication, and the devices 13-14 are slave devices for orderwire communication.

FIG. 1 shows the operation of the embodiment of the present invention.
This will be described in detail with reference to FIG.

First, in the state where there is no failure, the communication signal is prevented from oscillating by cutting off the right side of the order wire signal of the master device 11 (turning off the switching unit 25 in FIG. 2).

When a failure occurs, each device changes the disconnection processing portion by acquiring failure detection information from the device that has detected the failure, using APS signals (211 and 212 in FIG. 2).

Then, when the failure is recovered, the state returns to the original state (disconnection on the right side of the master device 11).

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to describe the embodiments of the present invention in more detail, embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 2 is a block diagram showing a detailed configuration of the ring configuration device.

With reference to FIG.
A PS processing unit 21, an APS monitor unit 22, an in-device alarm detection processing unit 27, a switching control unit 23, switching units 24 and 25, and an order wire 26 are provided.

The APS processor 21 receives APS signals 212 and 211 from the right and left sides in the figure, extracts only information for its own device ID (identifier), and sets the other information to through (transmitted as it is). Do).

The APS monitor unit 22 includes an APS processing unit 21
APS necessary for switching of the order wire communication line is selected from the APS signal from the APS, and the received information is passed to the switching control unit 23.

The switching control unit 23, based on the switching information from the APS monitoring unit 22 and the switching information from the in-device alarm processing unit 27, switches the order wire communication line switching unit 2.
Control of switching between 4 and 25.

In FIG. 2, the right and left order wire communication line switching units 24 and 25 switch the order wire communication line so as not to be connected between the inside and the outside of the apparatus according to a control command from the switching control unit 23 (the output signal is idle). Switch to a signal).

The in-device alarm processing unit 27 sends a switching control signal to the switching control unit 23 when it is necessary to switch the order wire signal line due to an alarm in the device.

The operation of the embodiment of the present invention will be described. FIG. 3 shows a configuration of the order wire communication in a normal state.

When there is no failure, the switching unit on the right side of the master device 31 is disconnected (switching to the idle signal side). Therefore, when talking on the order wires 310 and 330, the order wire 310 starts the order wire communication. The line 311, the order wire communication line 321, and the order wire 330 are reached.

The order wire 330 reaches the order wire 310 through the order wire communication line 322 and the order wire communication line 312.

FIG. 4 shows the configuration of order wire communication at the time of a failure.

If the line is cut between the ring devices 42 and 43, and the device 42 detects a failure, the in-device alarm detection processing unit 27 (see FIG. 2) sends a switching control signal to the switching control unit 23. As a result, the order wire communication signal switching unit 24 on the left side operates, and the order wire communication signal is cut off. Then, the APS signal for switching the line of the main signal from the device 42 passes the signal to the device 41, passes the signal to the device 44, and switches the signal to the protection side for the device 43. Sent.

Similarly, in the device 43, when a failure is detected, the in-device alarm detection processing unit 27
, The order wire communication signal switching unit 25 on the right side operates to cut off the order wire communication signal.

Then, an APS signal for switching the main signal line is transmitted from the device 43 to the device 44 for passing the signal, to the device 41 for passing the signal, and to the device 42 for switching the signal to the protection side. Can be

The master device 41 receives the APS from the device 42.
The signal is processed by the APS processing unit 21, and when the signal is received by the APS monitoring unit 22, the signal is passed to the switching control unit 23. Since the switching control unit 23 has not received any switching request from the in-device alarm control unit 27, it returns the switching unit 27 from the idle side and passes the order wire communication signal.
The same operation is performed by the APS signal from the device 43.

The orderwire 430 in this state, when talking in order wire 410 and an order wire 430, the order wire 4 10, from through orderwire communications line 442, through the order-wire communication line 432
Leads to.

The order wire 430 passes through the order wire communication line 431 and then passes through the order wire communication line 441 to reach the order wire 410.

Next, when the fault between the devices 42 and 43 is recovered, the device 42 detects the recovery from the fault,
The in-device alarm processing unit 27 sends out the release of the switching control signal to the switching control unit 23, and the order wire communication signal switching unit 24 on the left side of the device 42 operates to connect the order wire communication signal.

Then, the APS signal for switching the main signal line is returned from the device 42 to the device 41 as a normal signal, to the device 44 as a normal signal, and to the device 43 as a normal signal.

Similarly, in the device 43, when the failure recovery is detected, the in-device alarm processing unit 27 releases the switching control signal to the switching control unit 23, so that the right-side order wire communication signal switching unit 25 operates. The order wire communication signal is connected.

The APS signal for switching the main signal line is returned from the device 43 to the device 44 as a normal signal, to the device 41 as a normal signal, and to the device 42 as a normal signal.

The master device 41 receives the APS from the device 42.
The signal is processed by the APS processor 21 and the APS monitor 2
When the normal request is received in step 2, the request is passed to the switching control unit 23. The switching control unit 23 sets the switching unit 25 to the idle side.

Therefore, the order wire communication line returns to the state before the occurrence of the failure.

[0039]

As described above, according to the present invention,
Even when a failure occurs, it is possible to automatically switch the order wire line, eliminate the need to manually change the order wire communication line, and improve the operability, efficiency, and reliability.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining one embodiment of the present invention;
It is an MS shared protection ring system diagram.

FIG. 2 is a diagram illustrating a configuration of a ring device according to an embodiment of the present invention.

FIG. 3 is a diagram for explaining one embodiment of the present invention;
FIG. 9 is a configuration diagram of order wire communication in a normal state.

FIG. 4 is a diagram for explaining one embodiment of the present invention;
FIG. 4 is a configuration diagram of order wire communication at the time of a failure.

[Explanation of symbols]

11, 31, 41 Ring configuration device # 1 12, 42 Ring configuration device # 2 13, 33, 43 Ring configuration device # 3 14, 44 Ring configuration device # 4 110, 310, 410 Order wire 120 ring of ring configuration device # 1 Order wires 130, 330, and 430 of component device # 2 Order wires 140 of ring component device # 3 140 Order wires 311 of ring component device # 4 Order wire communication line from # 1 to # 4 312 Order wire communication line from # 4 to # 1 321 # Order wire communication line from # 4 to # 3 322 Order wire communication line from # 3 to # 4 431 Order wire communication line from # 3 to # 2 432 Order wire communication line from # 2 to # 3 441 From # 2 to # 1 Orderwire communication line 422 Orderwa from # 1 to # 2 Ear communication line 21 APS processing section 22 APS monitor section 23 Switching control section 24 Switching section for order wire communication from / to left side 25 Switching section for order wire communication from / to right side 26 Order wire 211 APS signal from / to left side 212 From right side APS signal to / from 213 Order wire signal to / from left side 214 Order wire signal to / from left side

Claims (3)

(57) [Claims] 1. A ring network system comprising a plurality of links.
Each of these ring components has an
Are connected and one ring configuration device is
A master device for ear communication, and other multiple ring components
Is a slave device for order wire communication, and each of the ring constituent devices is a bidirectional APS on the left and right sides.
(Automatic Protection Switching) signal and
Only the information for the device ID is extracted, and other information is
An APS processing unit for transmitting as it is , and an order wire communication based on an APS signal from the APS processing unit.
Select the APS required for switching the communication line and send the switching information
An APS monitor to be passed to the switching controller ; switching information from the APS monitor;
Based on the switching information from the
Switching control unit that controls switching between the left and right switching units
The order wire signal line
When it is necessary to change the
And a control command from the switching control unit to send an order wire communication.
Switch so that the communication line is not connected inside and outside the device
A switching unit for the left-side order wire communication line, and
A switching portion of the serial right order wire communication lines, wherein comprising a orderwire, and the fault is no state, order wire signal of said master device
By cutting either the right or left side of the issue,
Prevents communication signals from oscillating , and when a failure occurs on a line, the ring at both ends of the line
APS signal for switching main signal lines from constituent devices
To switch to the ring configuration device facing each other.
Information, and the master device monitors the switching information of the main signal and automatically
Switching the switching unit of the order wire of the device from disconnection to connection
M that secures order wire communication
Automatic switching of order wire for S-shared protection ring system. 2. Between the opposed first and second ring constituting devices.
When the line is cut in the first ring forming device
When a failure is detected, the in-device alarm detection processing is performed.
The control unit outputs a switching control signal to the switching control unit.
Therefore, either the right or left order wire communication line
Is activated, the order wire communication signal is disconnected, and
Switching the line of the main signal from the first ring constituent device
APS signal for the second ring configuration device
The signal is passed through to the previous device, and the second ring structure is used.
To the protection device to switch the signal to the protection side.
Sent to the second ring component to detect a fault.
Wherein the in-device alarm detection processing unit is the switching control unit
By outputting a switching control signal to the first link,
Through the left or right order wire through
The communication line switch is activated and the order wire communication signal is disconnected.
From the second ring configuration device,
The APS signal for switching is provided by the first ring component.
Through the signal to the device immediately before the
Signal to protection side
Sent from the first ring component to the master device.
The PS signal is processed by the APS processing unit, and the APS mode is processed.
When a through request is received by the control unit, it passes to the switching control unit,
The switching control unit is configured to control the order wire communication on the left or right side.
Return the switching section of the communication line from the idle side and
Through the communication signal and the AP from the second ring component
The A signal is processed by the APS processing unit,
When a through request is received by the S monitor unit, it is passed to the switch control unit.
The switching control unit may be configured to perform a right or left order
Return the switching part of the communication line from the idle side, and
Passing the wire communication signal, claim 1, wherein
Automatic switching of order wire of MS shared protection ring system. 3. An obstacle between the first and second ring components.
When the harm is restored, the first ring constituent device recovers from the failure.
When an old alarm is detected, the alarm processing unit in the device turns off the alarm.
A release of the switching control signal is sent to the switching control unit, and the first reset is performed.
The order wire communication line switching unit on the left side of the
Operating, the order wire communication signal is connected, and the main signal line is switched from the first ring constituting device.
Signal to the second ring constituent device
To return the signal to the normal state, and when the second ring constituent device detects the failure recovery,
The alarm processing unit in the device controls switching to the switching control unit.
Send a signal release, right side of the second ring component
The order wire communication line switching unit of
The communication signal is connected, and the main signal line is switched from the second ring constituent device.
Signal to the first ring constituent device
To return the signal to normal to each of the devices, wherein the master device is the first or second ring component device.
The APS signal from
When the normal request is received by the APS monitor, the switching is performed.
To the control unit, the switching control unit is a left or right switching unit
To the order wire before the fault occurred.
3. The MS according to claim 2 , wherein the communication line is returned.
Automatic switching of order wire for shared protection ring system.