KR20070065967A - A device detecting inter-self communication error of optical termination equipment and thereof method - Google Patents

Abstract

An apparatus and a method for detecting a communication fault between shelves in an optical termination equipment are provided to improve the maintenance function of an optical termination equipment by judging whether an IPC communication line fault, detected between shelves of the optical termination equipment, is a physical error generated from a communication line or an interface or an error generated from the driver of a shelf. An optical termination equipment consists of a basic shelf(100) and an extended shelf(200). The basic shelf(100) comprises a communication control part(110), a communication driver(120), and a communication alarm detection part(121). The communication control part(110), connected with an operator terminal, receives an operator's command, and transmits and receives communication signals with the communication driver(120). The communication driver(120) transmits a communication signal, received from the communication control part(110), to the extended shelf(200), and transfers a communication signal, received from the extended shelf(200), to the communication control part(110). The communication alarm detection part(121) receives a detection signal, or a ground signal, generated from the detection signal generation part(221) of the extended shelf(200). The extended shelf(200) comprises a communication control part(210), a communication driver(220), and the detection signal generation part(221). The communication control part(210) transmits and receives communication signals with the communication driver(220). The communication driver(120) transmits a communication signal, received from the communication control part(210), to the basic shelf(100), and conveys a communication signal, received from the basic shelf(100), to the communication control part(210). The detection signal generation part(221) generates a detection signal and transmits it to the communication alarm detection part(121).

Description

A device Detecting Inter-Self Communication Error Of Optical Termination Equipment And Thereof Method}

Fig. 1 shows the structure of self-self communication in the conventional optical end station.

Figure 2 shows the flow of the signal transmitted and received between the self of the conventional optical station.

Figure 3 shows the configuration of the communication between the self in the optical end station according to the present invention and the flow of signals transmitted and received between the self.

4 is a block diagram of an IPC communication alarm detection unit of a basic self according to the present invention.

5 shows an alarm detection function table according to the present invention.

6 is a flowchart illustrating a method for detecting a communication failure between self in the optical station apparatus according to the present invention.

<Description of Main Parts of Drawings>

100 ... Basic Self 200 ... Extended Self

110, 210 ... Communication control unit 120, 220 ... RS-422 driver

130, 230 ... IPC communication signal line 140, 240 ... RS-422 communication signal line

300 ... RS-422 communication line 310, 320 ... RS-422 connection

121 ... IPC communication alarm detector 221 ... ground signal generator

The present invention relates to a failure detection circuit of a communication line when a communication failure occurs in the self-to-self communication used in the optical termination equipment, and more particularly, a communication line generated between the self in the optical terminal device to which the IPC communication of the RS-422 method is applied. By dividing the failure intervals, and to improve the function of maintaining the device.

The optical termination equipment is a termination device installed in the optical transmission system. The transmission path is composed of fiber optic cables, and the lower layer is connected to a digital multiple conversion device.

The RS-422 (Recommended Standard-422) is one of communication standards that standardizes a method of transmitting and receiving data between a computer and a terminal device through a serial communication method.

Fig. 1 shows the structure of self-self communication in the conventional optical end station.

1, the basic self 100 and the extended self 200 are connected to the RS-422 communication line 300. The basic self 100 includes a communication control unit 110, an RS-422 driver 120, and the like, and similarly, the basic self 200 includes a communication control unit 210, an RS-422 driver 220, and the like.

The basic self 100 and the extended self 200 are connected to the RS-422 communication line 300. The RS-422 communication line 300 is an RS-422 connection unit 320 and an extended self ( 200 to RS-422 connection 310.

Looking inside the basic self 100, the IPC communication signal is transmitted and received along the IPC communication signal line 130 between the communication control unit 110 and the RS-422 driver 120, and the RS-422 driver 120. RS-422 communication signals are transmitted and received along the RS-422 communication signal line 140 in the basic self.

Similarly, in the extended self 200, the IPC communication signal is transmitted and received along the IPC communication signal line 230 between the communication control unit 210 and the RS-422 driver 220, and the RS-422 driver 220 and the RS-422 connection unit 310 are provided. ) Is transmitted and received along the RS-422 communication signal line 240 in the extended self.

The basic self 100 is connected to the operator terminal 400 and the operator can control the basic self 100 through this terminal 400 and check whether there is a communication failure.

Hereinafter, a signal transmitted and received between the devices in the conventional optical end device will be described in more detail with reference to the accompanying drawings.

Figure 2 shows the flow of the signal transmitted and received between the self of the conventional optical station.

2, the IPC output signal 131 outputted from the communication controller 110 of the basic self 100 is converted into a positive IPC output signal 141 and a negative IPC output signal 142 by the RS-4 driver 120. The RS-422 connection unit 320 of the basic self 100 is transmitted to the RS-422 connection unit 310 of the expansion self 200 through the RS-422 communication line 300.

Similarly, the IPC clock signal 132 output from the communication control unit 110 of the basic self 100 is converted into a positive IPC clock signal 143 and a negative IPC clock signal 144 by the RS-4 driver 120 and the basic self. The RS-422 connection unit 320 of the 100 is transmitted to the RS-422 connection unit 310 of the expansion self 200 through the RS-422 communication line 300.

The IPC output signal and the IPC clock signal are input to the RS-422 driver 220 of the expansion self 200 through the RS-422 communication line 300 and converted into IPC communication signals to convert the IPC communication signal line within the expansion self 200. Input to the communication control unit 210 along the (230).

The IPC communication signal transmitted from the extended self 200 is also output to the RS-422 driver 220 through the IPC communication signal line 230 in the extended self 200 and is a positive / negative output signal from the RS-422 driver 220. The conversion is input to the communication control unit 110 of the basic self 100 through the reverse conversion process of the input signal.

The communication control unit 110 of the basic self 100 detects an input IPC communication signal to determine whether the communication state is good. That is, when there is no signal input due to a communication failure, it is generated as an IPC communication failure alert that communication between the self 100 and 200 is impossible.

In the conventional case, when there is no IPC communication signal 130 inputted to the communication control unit 110 side of the basic self in order to determine the failure of the IPC communication between the basic self 100 and the extended self 200, Declares as an alarm, which alerts the operator that a fault condition has occurred that cannot control the extended self 200.

The failure cause of the IPC communication may include an error of the IPC communication line 300 outside the self, an error of the RS-422 connection units 310 and 320, or an error of the RS-422 drivers 120 and 220 inside the self. According to the prior art, there is a problem in that it is not possible to determine in which section a failure occurs.

The present invention has been devised to solve the above problems of the prior art. That is, an object of the present invention is to provide a method for determining whether a communication failure is a physical error occurring in a communication line or a connection part or an error occurring in a self-internal driver when detecting an error in a communication line between the devices in the optical station. It is done.

In an optical station apparatus for detecting a communication failure between optical stations according to the present invention for achieving the above object, the basic terminal includes an extended self and an extended self, wherein the basic self is connected to an operator terminal and is commanded by an operator. A basic self-communication control unit for receiving and receiving a communication signal with a basic self-communication driver; A basic self communication driver for transmitting a communication signal received from the basic self communication control unit to an extended self and a communication signal received from the extended self to the basic self communication control unit; And an alarm detector for receiving a detection signal generated by the detection signal generator of the extended self, wherein the extended self comprises: an extended self communication control unit for transmitting and receiving a communication signal with the extended self communication driver; An extended self communication driver for transmitting a communication signal received from the extended self communication control unit to a basic self and transmitting a communication signal received from the basic self to the extended self communication control unit; And a detection signal generator for generating a detection signal and transmitting the detection signal to the communication alarm detection unit of the basic self.

The communication alarm detection unit may receive a detection signal generated by the detection signal generator and transmit the detection signal to the basic self communication control unit.

In addition, the communication alarm detection unit may receive a signal for whether or not to use the extended self, and receives the detection signal generated by the detection signal generator only when using the extended self, and transmits the detection signal to the basic self communication control unit. have.

Here, when the detection signal is a ground signal and the ground signal is received in the communication alarm detection unit, the basic self communication control unit outputs a normal message, and when the non-ground signal is received in the communication alarm detection unit, the basic self communication control unit May output a fault message.

Self-discovery communication failure detection method of the optical station apparatus according to the present invention includes a signal transmission step of transmitting a communication signal and a detection signal to the basic cell in the extended self; A communication signal determination step of determining whether a communication signal is received from the basic self after transmitting the communication signal and the detection signal to the basic self in the signal transmission step; A normal notification step of outputting a normal message when it is determined that the communication signal is received by the basic self in the communication signal determination step; A detection signal determination step of determining whether a detection signal is received by the basic self when it is determined that the communication signal is not received by the basic self in the communication signal determination step; A salp internal fault notification step of outputting a message of a fault in the self when it is determined that the detection signal is received by the basic self in the detection signal determination step; And if it is determined in the detection signal determination step that the detection signal is not received in the basic self, it characterized in that it comprises a salp external failure notification step of outputting a message that a failure outside the self.

In this case, the detection signal is a ground signal, and in the detection signal determination step, when the ground signal is received by the basic self, it is determined that the detection signal is received. When the signal other than ground is received by the basic self, the detection signal is not received. It may be characterized in that it determines not to.

The present invention has a basic technical idea of determining whether a communication failure is a handicapped person in the self or a handicapped person outside the self by placing a separate signal from a communication signal transmitted and received by the optical station apparatus.

In the present invention, the IPC communication alarm detection unit 121 and the ground signal generation unit 221 are added to the existing basic self 100 and the extended self 200, respectively, so that the communication failure is caused by the error of the communication line or the RS-422 connection unit. It determines whether it is an external communication failure or a communication failure inside the self due to an error of the RS-422 driver.

Figure 3 shows the configuration of the communication between the self in the optical end station according to the present invention and the flow of signals transmitted and received between the self.

Referring to FIG. 3, an IPC communication alarm detector 121 is further included in the basic self 100 of the optical station apparatus according to the present invention, and a ground signal generator 221 is further included in the extended self 200.

The ground signal generator 221 generates a ground signal. This signal is an IPC_INS_EXP signal 152. The IPC_INS_EXP signal 152 having the ground value generated by the ground signal generator 221 is connected to the basic self 100 along the RS-422 communication line 300 through the connection 320 of the extended self 200. 310).

The connection part 310 of the basic self processes the IPC_INS_EXP signal 152 as an IPC_INS_MAIN signal 151. The IPC_INS_MAIN signal 151 is input to the IPC communication alarm detector 121. The IPC_EN signal 135 is also input to the IPC communication alarm detection unit 121.

The IPC_EN signal 135 is a control signal used when the extended self 200 is to be used. When the signal value is "Enable (0)", the IPC_EN signal 135 enables IPC communication to use the extended self 200. When the signal value is "Disable (1)", since the extended self 200 is not used, IPC communication is disabled.

The IPC communication alarm detection unit 121 generates the IPC_LOS signal 134 using the IPC_INS_MAIN signal 151 and the IPC_EN signal 135.

The IPC_LOS signal 134 is a signal for determining whether a communication failure occurs. If there is a communication failure, the signal value is "1 (IPC_Signal loss)" and if there is no communication failure, the signal value is "0 (No alarm)". If the IPC_LOS signal 134 has a value of "1 (IPC_Signal loss)", the terminal 400 outputs an alarm to the operator.

The structure of the IPC communication alarm detection unit 121 and the function table for generating the IPC_LOS signal 134 are shown in FIGS. 4 and 5, respectively.

4 is a block diagram of an IPC communication alarm detection unit of a basic self according to the present invention.

4, the IPC_INS_MAIN signal 151 and the IPC_EN signal 135 are input to the IPC communication alarm detector 121, and the IPC_LOS signal 134 is output from the IPC communication alarm detector 121.

5 shows an alarm detection function table according to the present invention.

If the IPC_INS_MAIN signal 151 is "GND (0)" while the IPC_EN signal 135 is "Enable (0)", the IPC_INS_EXP signal 152 generated from the extended self 200 is transmitted as it is. If it is. Therefore, in this case, the IPC_LOS signal 134 value is output as "0 (No alarm)". This is described in the second row of the table shown in FIG.

If the value of the IPC_INS_MAIN signal 151 is "Open (1)" while the value of the IPC_EN signal 135 is "Enable (0)", the communication line 300 or the connection parts 310 and 320 are disconnected and the extended self 200 Since the generated IPC_INS_EXP signal 152 is not transmitted as it is, there is a communication failure. Therefore, in this case, the IPC_LOS signal 134 value is output as "1 (IPC_Signal loss)". This is described in the third row of the table shown in FIG.

If the value of the IPC_EN signal 135 is "Disable (1)", the extended self 200 is not used. Therefore, the IPC_INS_MAIN signal 151 is "GND (0)" or "Open (1)". There is no room for it. This is because a communication failure occurs when an error occurs in communication between the basic self 100 and the extended self 200 when the extended self 200 is used. Therefore, when the IPC_EN signal 135 value is "Disable (1)", the IPC_LOS signal 134 value is output as "0 (No alarm)" regardless of the IPC_INS_MAIN signal 151 value. This is described in the fourth and fifth rows of the table shown in FIG.

When using the extended self 200 (IPC_EN = "Enable (0)") When the IPC_LOS signal 134 value is output as "0 (No alarm)", but the IPC communication signal is not input to the basic self 100. There is no problem in the communication line 300 or the connection unit 310, 320, but a problem occurs in the RS-422 driver 120 of the basic self-100 or the RS-422 driver 220 of the extended self-200. . That is, this case is a communication failure inside the shelf (100, 200).

According to the present invention, when the operator outputs the IPC_LOS signal 134 value as "1 (IPC_Signal loss)", the operator has a communication failure outside the self (100, 200) due to an error such as the communication line 300 or the connection part (310, 320). If the IPC_LOS signal 134 is output as "0 (No alarm)", but the IPC communication signal is not input to the basic self-signal 100, the RS-422 driver (120, 220) may cause errors. It may be determined as a communication failure inside the shelves 100 and 200.

Hereinafter, a method for detecting a communication failure between self in an optical station apparatus according to the present invention will be described with a flowchart. 6 is a flowchart illustrating a method for detecting a communication failure between self in the optical station apparatus according to the present invention.

The extended self transmits the detection signal and the communication signal to the basic self (S610). The detection signal is the IPC_INS_EXP signal (IPC_INS_MAIN signal on the basic self side) and the communication signal is a signal to be transmitted from the extended self to the basic self.

After transmitting the detection signal and the communication signal from the extended self to the basic self, it is determined whether the communication signal transmitted from the extended self is received from the basic self (S620). If it is determined that a communication signal is received, communication between the extended self and the basic self is normally performed. In this case, necessary communication is performed (S630).

If the communication signal is not received as a result of the determination in step S620, a communication failure has occurred. In operation S640, it is determined whether a detection signal is received from the basic self to distinguish whether the communication failure occurs from inside the self or outside the self. If it is determined that the detection signal is received, since there is no error outside the self, it is determined as a communication failure inside the self (S650). If the detection signal is not received in step S640, it is determined as a communication failure outside the self (S660).

In the above, the apparatus and method for detecting a communication failure between self in the optical station apparatus according to the present invention have been described.

The scope of the present invention is not limited to the parts described in the present application, but includes all modified and modified forms that belong to the technical spirit described in the specification and the appended claims. In the present specification, the RS-422 communication method is used as the self-self communication method, but the self-self communication method in the present invention is not limited thereto. In addition, although the ground signal is used as a signal for determining a communication failure, the scope of the present invention includes the case of using another detection signal.

According to the present invention, when detecting an IPC communication line failure between self terminals in an optical station device, it is possible to determine whether the communication failure is a physical error occurring in a communication line or a connection part or an error in a driver inside the self. This has the advantage of improving functionality.

Claims (6)

In the optical station device composed of a basic self and an extended self, The basic self, the basic self communication unit connected to the operator terminal receives the operator's command and transmits and receives a communication signal with the basic self communication driver; A basic self communication driver for transmitting a communication signal received from the basic self communication control unit to an extended self and a communication signal received from the extended self to the basic self communication control unit; And And a communication alarm detection unit for receiving the detection signal generated by the detection signal generation unit of the extended self. The extended self, An extended self communication control unit for transmitting and receiving a communication signal with an extended self communication driver; An extended self communication driver for transmitting a communication signal received from the extended self communication control unit to a basic self and transmitting a communication signal received from the basic self to the extended self communication control unit; And And a detection signal generator for generating a detection signal and transmitting the detection signal to the communication alarm detection unit of the basic self. The method according to claim 1, wherein the communication alarm detection unit, And a detection signal generated by the detection signal generator to transmit the detection signal to the basic self communication control unit. The method according to claim 2, The communication alarm detection unit, Self-communication failure between optical station devices, characterized in that it receives the signal for the use of the extended self and receives the detected signal generated by the detection signal generator only to use the extended self and transmits the detected signal to the basic self communication control unit. Detection device. The method according to any one of claims 1 to 3, The detection signal is a ground signal, When the ground signal is received in the communication alarm detection unit, the basic self communication control unit outputs a normal message, And a non-ground signal is received from the communication alarm detection unit. A signal transmission step of transmitting a communication signal and a detection signal from the extended self to the basic self; A communication signal determination step of determining whether a communication signal is received from the basic self after transmitting the communication signal and the detection signal to the basic self in the signal transmission step; A normal notification step of outputting a normal message when it is determined that the communication signal is received by the basic self in the communication signal determination step; A detection signal determination step of determining whether a detection signal is received by the basic self when it is determined that the communication signal is not received by the basic self in the communication signal determination step; A salp internal fault notification step of outputting a message of a fault in the self when it is determined that the detection signal is received by the basic self in the detection signal determination step; And In the detection signal determination step, if it is determined that the detection signal is not received in the basic self, Self-external communication failure detection method of the optical end station device comprising the step of outputting a notification that the external error outside the self message; . The method according to claim 5, The detection signal is a ground signal, In the detection signal determination step, When the ground signal is received by the basic self, it is determined that the detection signal is received, And detecting a signal not being received when a signal other than ground is received by the basic self.

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