KR100798264B1 - The method for mapping unit alarm of synchronous optical transmission system to service circuit - Google Patents

Abstract

The present invention relates to a service line matching method when a synchronous optical transmission unit alert occurs corresponding to a service line from a transmission unit alert in order to grasp the correlation of the alarms detected from various devices in the transmission network management system.

According to the present invention, there is provided a method comprising: separating an alarm generated at each device into a device related alarm and a line related alarm; In the case of a line-related alarm, if the input / output port information and the signal hierarchy information are input from the alarm occurrence point and the signal hierarchy is not the highest hierarchy, the crosslinking information of the corresponding synchronous optical transmitter is retrieved from the synchronous optical transmitter to generate an alarm time slot. Determining; Searching for a line related to an alarm by using the determined alarm occurrence time slot information and performing a line alarm process on the line accommodated in the corresponding slot; Searching for a line associated with the alert and performing a device alert process if a corresponding line does not exist; It provides a service line matching method when a synchronous optical transmission unit alarm occurs in a transmission network management system comprising a.

Optical transmission device, service line, transmission network, device alarm, line alarm

Description

Method of mapping unit alarm of synchronous optical transmission system to service circuit             

1 is an exemplary diagram schematically illustrating a cross-connected portion between a physical input / output port and a time slot of a synchronous optical transmission device installed in a telephone station,

Figure 2 is an exemplary view of the alarm collected from the synchronous optical transmission device applied to the present invention,

3 is a result of querying the cross-connection information inside the SMOT-16 device applied to the present invention,

4 is an exemplary diagram showing line related information stored in a database to which the present invention is applied.

5 is an exemplary diagram of an optical transmission network configuration applied to the present invention,

6 is a flowchart illustrating a process of responding to service line information of a synchronous optical transmission unit occurrence alert according to an embodiment of the present invention.

The present invention relates to a service line matching method in case of a synchronous optical transmission unit alert in a transmission network management system. In particular, a synchronous correspondence of service lines from a transmission unit alert to grasp the correlation of alarms detected from various devices in the transmission network management system. The present invention relates to a service line matching method when an optical transmission unit alert occurs.

In the construction of the optical transmission network, a high speed signal is generated by multiplexing a low speed signal, and the transmission efficiency is increased by repeating the multiplexing at a higher speed level.

At this time, if a problem occurs in the process of the operation of the plurality of optical transmission devices, each device generates an alarm. Among these alarms, service line-related alarms are generated and collected at specific ports of specific units, which are the physical locations of the optical transmission equipment, but the physical locations are different from the physical locations in the process of multiplexing, cross-connecting, and demultiplexing. There is a problem that it is difficult to know which service line is affected only by the alert itself, since this is allocated and services the transmission line.

An object of the present invention for solving the problems of the prior art as described above is to generate a synchronous optical transmission unit unit alarm corresponding to the service line from the transmission unit unit alarm in order to determine the correlation of the alarms detected from the various devices in the transmission network management system It is to provide a service line matching method.

In order to achieve the above object, according to the present invention, in the service line matching method when a unit of the synchronous optical transmission unit alarm occurs in the transmission network management system for collecting and analyzing various alarms generated from a plurality of transmission equipment, Separating into device related alarms and line related alarms; In the case of a line-related alarm, if the input / output port information and the signal hierarchy information are input from the alarm occurrence point and the signal hierarchy is not the highest hierarchy, the crosslinking information of the corresponding synchronous optical transmitter is retrieved from the synchronous optical transmitter to generate an alarm time slot. Determining; Searching for a line related to an alarm by using the determined alarm occurrence time slot information and performing a line alarm process on the line accommodated in the corresponding slot; Searching for a line associated with the alert and performing a device alert process if a corresponding line does not exist; It provides a service line matching method when a synchronous optical transmission unit alarm occurs in a transmission network management system comprising a.

In addition, a computer-readable recording medium capable of executing a service line matching program when a synchronous optical transmission device unit alarm occurs in a transmission network management system that collects and analyzes various alarms generated from a plurality of transmission equipments, Separating the alarm into a device related alarm and a line related alarm; In the case of a line-related alarm, if the input / output port information and the signal hierarchy information are input from the alarm occurrence point and the signal hierarchy is not the highest hierarchy, the crosslinking information of the corresponding synchronous optical transmitter is retrieved from the synchronous optical transmitter to generate an alarm time slot. Determining; Receiving input / output port information and signal hierarchy information from an alarm occurrence point, and performing a line alarm processing without performing cross-connection information retrieval if the signal hierarchy is the highest hierarchy; Searching for a line related to an alarm by using the determined alarm occurrence time slot information and performing a line alarm process on the line accommodated in the corresponding slot; If there is no cross connection information of the synchronous optical transmission device, determining a time slot from existing information; Searching for a line associated with the alert and performing a device alert process if a corresponding line does not exist; Provided is a computer readable recording medium capable of executing a service line matching program when a synchronous optical transmission unit alert occurs in a transmission network management system.

Hereinafter, a service line matching method will be described in more detail with reference to the accompanying drawings when a synchronous optical transmission unit alarm occurs in a transmission network management system according to an embodiment of the present invention.

In a typical transmission network, low-level signals on the transmitting side are allocated to a higher speed class through a multiplexing process, and assigned with a predetermined time slot, and are cross-connected during transmission. It is used throughout the demultiplexing process.

In the process of multiplexing, cross-connecting, and demultiplexing a plurality of devices that process signals of various levels to perform a transmission function, a physical input / output location (hereinafter referred to as a "port") is a designated location (hereinafter, referred to as "port") within a signal. Time slots') may be cross-connected to have time slots different from the input / output order. Typically, optical transmission device alerts are detected at the port. In addition, when looking at the internal alarm generation system of the transmission equipment, if one system detects an abnormal situation (alarm, failure, etc.), the system issues a detected alarm and relays or opposes the information corresponding to the detected alarm. It is configured to propagate the occurrence of a failure by transmitting to the back.

In this process, due to one cause, a plurality of devices generate different alarms. Operators of the telephone stations where each equipment is installed only observe alarms generated by their own telephone station equipment, which makes it difficult to pinpoint the exact location or cause of the trouble and is time consuming.

Operators of telephone stations monitor alarms in two broad categories.

The first is the equipment-based alarm classification which alarm is generated at which location of which equipment, and the second is the circuit-based alarm classification which affects which circuit is in service or if it is affected. to be.

Alerts from the equipment's point of view at the transmitting equipment are immediately known at the time of the alarm collection. However, because the physical device ports are transmitted in time slots during multiplexing, cross linking, and demultiplexing, it is difficult to know which circuits are affected only by line-related alarms from equipment.

FIG. 1 is an exemplary diagram schematically illustrating a cross-connected portion between a physical input / output port 11 and a time slot 12 of a synchronous optical transmission device installed in telephone stations A, B, and C. .

When servicing the line over the connection 13 drawn in solid line in FIG. 1, if a failure 14 occurs in port 1 of telephone station A among the slave signal input / output ports 11, the operator has an extra 5 times unused. By using a port instead of port 1, and by setting up a cross connection to use the time slot 1 used by port 1 as it is (15), it is possible to service the line at another telephone station without changing the equipment configuration. do.

Or, if a failure 16 occurs in time slot 12 of telephone station B, telephone station A uses an extra 5 time slots, and telephone B uses a 5 time slot. 17) to serve the circuit.

As such, there is a case where the same number is not used between the input / output port and the time slot, so it is more difficult for the operator to know the service line only by the alarm occurrence position.

In the network management system that can collect a large number of alarms from multiple devices, the I / O port information of the device can be obtained from the collection alarms, the contents of the alarms, the cross connection information obtained from the transmission device, or the data from the transmission device. Using the stored cross-connection information and the line information stored in the database by the operator's input, the system detects the affected line in case of failure, the system in question, and collects the relevant alarms on a line or system basis to promptly inform the operator. You can provide relevant information to solve the problem.

The present invention interprets the collected alert messages to distinguish circuit related alerts from device related alerts.

In the case of a line-related alert, the present invention provides an alert interpretation module for extracting device port information from an alert message, performing cross-connection information retrieval to the corresponding device to receive the response, and extracting each port or time slot from the cross-connect information. A module for determining a time slot in which an alarm occurs in response to a port extracted from the alarm analysis module and port or time slot information extracted from the cross connection information, and a module for searching a service line using the determined time slot It consists of.

On the other hand, the alarm collected from the synchronous optical transmission equipment includes the system name, local name, time of occurrence, type of equipment, signal hierarchy, alarm generating unit, alarm occurrence point, alarm item and the like.

2 is an exemplary diagram of an alert collected from a synchronous optical transmission device applied to the present invention, wherein the collected alert is a line related alert collected from SMOT-1 and an affected port information table therefrom.

The information included in the table is composed of equipment type (SMOT1, SMOT4, SMOT16, etc.), signal level (DS3, STM1, STM4, STM16, etc.), alarm generation unit, alarm occurrence point and alarm item, and etc. The port number affected from the occurrence location can be defined as the last item in FIG.

FIG. 3A is a result of inquiring cross connection information in the SMOT-16 device applied to the present invention, and FIG. 3B is an exemplary view graphically displaying the result of FIG. 3A.

The cross connection information is composed of cross connection classification (CROSS, CONNECT, etc.), signal hierarchy (AU3, AU4, etc.), cross connection start point, cross connection end point, and the like.

Here, when the cross-connection segment is CONNECT and one of the cross-connection start or end points is a TAUG (Tributary Administrative Unit Group), the TAUG page number represents a physical port. The cross connection information of the SMOT-16 device of FIG. 3A includes 1 to 16 AU4 (AU: Administrative Unit) signals, and each AU4 signal includes a group of three AU3 signals. If the signal level of the group, which is the second item of FIG. 3, is AU4, the group is treated as one STM1 level signal, and when the signal level of the group is AU3, three AU3s are each treated as DS3 level signals. .

On the other hand, it is possible to extract the time slot number from each cross-connection start or end point, for example, the time slot number 230 and the port number 210 can be extracted from the 'CONNECT AU4 EAUG7-1 TAUG5-1'. Each digit of the time slot number is a slot number according to the multiplexing level, where the first digit (2 2 of 230) is the STM4 slot number, the second digit 2 (230 3) is the STM1 slot number in one STM4 signal, and the last digit ( 230's 0; where 0 is the STM1 signal) is the DS3 slot number in one STM1 signal.

4 is an exemplary diagram showing line related information stored in a database to which the present invention is applied. The line related information includes the telephone offices (officea and officez) at both ends of the line, the system name in which the line is accepted, the signal hierarchy, the time slot number, and It consists of a service line name.

Time slot information among the information stored in the database corresponds to the time slot number extracted from the cross-connection information of the equipment can know the name of the line serving the corresponding time slot.

5 is an exemplary diagram of a configuration of an optical transmission network applied to the present invention.

The optical transmission network shown in FIG. 5 is composed of 2.5 Gbps-class synchronous optical transmission apparatus (hereinafter, referred to as 'SMOT-16') equipment between telephone stations A, B, and C, and signals of lower levels (DS1, DS3, etc.) In this example, 155 Mbps class synchronous optical transmission device (hereinafter referred to as 'SMOT-1') is used for multiplexing.

In FIG. 5, when the transmission optical core of the SMOT-1 51 is disconnected (53) among the optical cores between the SMOT-1 51 and the SMOT-16 (52) of the telephone station A, an alarm that occurs will be described by way of example. As follows.

If the optical core is disconnected between the transmission of SMOT-1 and SMOT-16 installed in telephone station A, the SMOT-1 generates a Far End Receive Failure (FERF) alarm from the NNIB (Network Node Interface Board). Loss of Signal (LOS) alarm of TI1U occurs. All three alarms affect the service on the 155 Mbps line (hereinafter referred to as 'STM-1') 45 between telephone stations A and C.

FIG. 6 is a flowchart illustrating a service line information correspondence process of a synchronous optical transmission device unit generation alert according to an embodiment of the present invention. Referring to FIG. 6, a line correspondence process is described according to the flowchart shown in FIG. 6. , As follows.

When line-related LOS alarm of TI1U is detected by SMOT-16 equipment of telephone station A shown in FIG. 5, an example of line extraction is as follows.

First, when the LOS alarm is detected in step S601 (601), it is determined in step S602 whether it is a line related alarm by referring to the line related alarm table.

If the determination result in step S602 is a line-related alarm, it is determined in step S603 whether or not it is a top-level alarm.

As a result of the determination in step S603, if it is not the highest level related alarm, in step S604, the cross-connection information retrieval command is transmitted to the synchronous optical transmission device, and in step S605, it is determined whether or not the response is normally received.

As a result of the determination in step S605, if the cross connection information is normally received, in step S606, the alarm occurrence time slot is determined using the cross connection information of the current equipment and the port information collected when the alarm is detected, and in step S607, After recording the cross-connection information received from the equipment into the database, in step S609, the circuit is searched in the database using the determined time slot, and in step S610, it is determined whether the circuit is accommodated in the slot.

As a result of the determination in step S610, if a line exists, the line name is extracted in step S611, the line alarm processing is performed, and then, the process ends.

If there is no line as a result of the determination in step S610, the process ends after the device alert processing in step S612.

On the other hand, if the determination in step S602 is not a line-related alarm, the flow proceeds directly to step S612.

If the determination result in step S603 indicates that the alarm is associated with the highest level, in step S613, the time slot is set to '0', and the flow advances to step S611.

As a result of the determination in step S605, when there is no response within the response waiting time, in step S608, a time slot is determined from existing information in the database, and the flow advances to step S609.

On the other hand, when the NNIB FERF alarm is detected in the SMOT-1 equipment of telephone station A, an example of line information extraction is as follows. If a FERF alarm is detected in SMOT-1 (S601), the FERF alarm is determined to be a line-related alarm with reference to the line-related alarm table (S602), and the NNIB's alarm is STM, the highest level of SMOT-1, not the slave alarm. Since the first-class alarm, cross-connection information retrieval is unnecessary, the slot is set to '0' (S613). If the slot is '0', the system name is determined as the service line name, and a line alert process is performed (S611).                     

In both cases, the FERF of SMOT-1 and the LOS alarm of SMOT-16 were caused by different devices due to one cause or by I / O port or time slot for configuring the same line. Corresponds to one affected line 55.

That is, in the present invention, various alarms generated from transmission equipments located in a telephone station are collected in a network management system to separate alarms and device alarms related to service lines, and extract ports from which alarms are generated from circuit-related alarms.

If it is a line-related alarm, it collects the internal cross-connection information of the synchronous optical transmission device to determine the time slot in which the alarm occurred, and determines the affected line from the alarm occurrence time slot and the line related information and presents it to the operator for effective diagnosis and repair. Make it possible to respond.

While the invention has been described above based on the preferred embodiments thereof, these embodiments are intended to illustrate rather than limit the invention. It will be apparent to those skilled in the art that various changes, modifications, or adjustments to the above embodiments can be made without departing from the spirit of the invention. Therefore, the protection scope of the present invention will be limited only by the appended claims, and should be construed as including all such changes, modifications or adjustments.

As described above, according to the present invention, when alarms generated from various equipments affect a single line, the alarm is collected from the line point of view, thereby facilitating the location of the fault and identifying the cause of the fault, and the information is stored in line-by-line fault management and the like. By using it, there is an effect that line management can be performed more easily.

Claims (5)

In the service line matching method in the event of a synchronous optical transmission unit unit alarm in a transmission network management system that collects and analyzes a variety of alarms from a plurality of transmission equipment, A first step of dividing an alarm generated in each device into a device related alarm and a line related alarm, and processing a corresponding device related alarm if the device is a related alarm; In the case of a line-related alarm, if the input / output port information and the signal hierarchy information are input from the alarm occurrence point, and the signal hierarchy is not the highest hierarchy, cross-connection information of the corresponding synchronous optical transmission device is retrieved from the synchronous optical transmission device to determine an alarm occurrence time slot. A second step of doing; A third step of searching for a line related to an alarm by using the determined alarm occurrence time slot information and performing a line alarm processing on a line accommodated in a corresponding slot; And A fourth step of searching for a line associated with the alert and performing a device alert process if a corresponding line does not exist; Service line matching method when a synchronous optical transmission unit alarm occurs in a transmission network management system comprising a. The method of claim 1, In the transmission network management system further comprising the step of receiving input and output port information and signal hierarchy information from the alarm occurrence point, and if the signal hierarchy is the highest level, without performing cross-connection information search, and performing a line alarm processing Service line matching method in case of synchronous optical transmission unit alarm. The method of claim 1, And determining the time slot from the existing information if there is no cross connection information of the synchronous optical transmission device. The method according to claim 1 or 3, The second step, Storing sub-connection information received from the transmitting equipment in a database; And A sub-step of determining an alarm occurrence time slot from existing information stored in the database if cross linking information of the synchronous optical transmission device does not exist; Service line matching method when a synchronous optical transmission unit alarm occurs in a transmission network management system comprising a. A computer-readable recording medium capable of executing a service line matching program when a synchronous optical transmission unit alarm occurs in a transmission network management system that collects and analyzes various alarms generated from a plurality of transmission equipments. Separating alarms generated in each device into device related alarms and line related alarms; In the case of a line-related alarm, if the input / output port information and the signal hierarchy information are input from the alarm occurrence point and the signal hierarchy is not the highest hierarchy, the crosslinking information of the corresponding synchronous optical transmitter is retrieved from the synchronous optical transmitter to generate an alarm time slot. Determining; Receiving input / output port information and signal hierarchy information from an alarm occurrence point, and performing a line alarm processing without performing cross-connection information retrieval if the signal hierarchy is the highest hierarchy; Searching for a line related to an alarm by using the determined alarm occurrence time slot information and performing a line alarm process on the line accommodated in the corresponding slot; If there is no cross connection information of the synchronous optical transmission device, determining a time slot from existing information; And Searching for a line associated with the alert and performing a device alert process if a corresponding line does not exist; A computer-readable recording medium capable of executing a service line matching program when an synchronous optical transmission unit alarm occurs in a transmission network management system.

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