KR920010378B1 - CONTROL DEVICE FOR INSPECTING REPERATER OF 565 Mbps SYNCHRONOUS OPTICAL NETWORK - Google Patents

Abstract

The relay system of synchronous optical network is antomated by a centralized relay supervising system. The apparatus comprises a service channel interfacing unit (10) for transmitting data of synchronous optical network supervisor, a subsupervisory controller (30) for receiving and processing performance and alarm data of the service channel interfacing unit; a performance checker (40) connected to the service channel interface unit and the subsupervisory controller to collect line performance data and alarm data, and a display (50) for displaying performance data.

Description

Repeater Monitoring Controller for 565Mbps Optical Transmission System

1 is a configuration diagram of a 565 Mbps optical transmission system,

2 is a block diagram of the monitoring and control device,

3 is a configuration diagram of a repeater monitoring control device,

4 is an internal configuration diagram of the sub-monitoring controller (SMC),

5 is a configuration diagram of the firmware of the sub-monitoring controller (SMC),

6 is an internal configuration diagram of the performance monitor (ISPM),

7 is a firmware diagram of the performance monitor (ISPM),

8 is a diagram showing the firmware configuration at the time of writing.

* Explanation of symbols for the main parts of the drawings

1,4: single station supervisory control device 2: repeater supervisory control device

3: relay station monitoring and control device 10: service channel interface (SCI)

30: sub-monitoring controller 40: performance monitoring

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supervisory control device in charge of operation and maintenance functions in a 565 Mbps optical transmission system, and more particularly to a repeater supervisory control device.

Surveillance and control devices of the early and conventional optical transmission devices faced several problems in order to introduce a new system and operate it normally because of the importance of the system operation function by the operator's judgment. Firstly, many labor costs must be spent at all stations for manual operation, and secondly, it is highly dependent on the judgment of the operator to monitor and analyze the performance and operation status of the system. Third, you have to spend time and money, and thirdly, system malfunctions caused by operator errors can reduce the availability of your system. To solve this problem, many national or foreign transmission network operators have developed their own detection and control devices to efficiently operate their systems and to easily maintain them for beginners. Recently, various transmission systems and transmission networks have been developed. An integrated operation and maintenance system is being developed for integrated operation and maintenance. In addition, research on the development of a standard synchronous optical network centered on CCITT continues to make recommendations for a wide range of fields ranging from system design, operation and maintenance.

Therefore, the present invention has a monitoring and control device in the repeater having the characteristics of automation and centralization and cost reduction, time saving, and in-service monitoring in order to easily and efficiently perform the above-described conventional operation and maintenance method of the optical transmission system The purpose is to provide.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of a 565 Mbps optical transmission system. In this configuration, one repeater and one drop / insert relay station exist between both stations, but in practice, a plurality of repeaters and drop / insert relay stations may be mixed depending on the domestic transmission network configuration. There can be up to 22 repeaters and drop / insert repeaters.

The 565Mbps optical transmission system is composed of optical station equipment (LTE), optical relay device (REG) and supervisory control device (MCS), and is divided into single station, repeater, and drop / insert relay station according to the device configuration. The optical station equipment is where the 565Mbps / s main signal is multiplexed / demultiplexed into DS3 or DS4 dependent signals and there is a preliminary switching function. The optical repeater is a place to reproduce the weakened 565Mbps optical signal through a long relay distance, and there is no switching function. Tributary signals are DS3 (44.736Mbps) and DS4 (139.264Mbps) and are connected to LTE (Line Terminal Equipment) through Switch Matrix for line congestion.

A single station is where all circuits are multiplexed / demultiplexed with dependent signals and exist at both ends of the maintenance interval. The drop / insert relay station is a station where the optical station equipment and the optical repeater exist together, and the repeater is where all the lines consist of the optical repeater only.

2 is a configuration diagram of the entire monitoring control device (MCS) to which the present invention belongs, (1) and (4) are single station monitoring control devices, (2) repeater monitoring control devices, and (3) relay station monitoring control devices. Respectively.

Single station supervisory control device (1,4) is a stationary device (RSCE: Restoration and Switching Control Equipment), master monitor and controller (MMC), display and printer equipment (DPE), sub-monitoring controller (SMC: It consists of Slave Monitor and Controller, and In-Service Performance Monitor (ISPM). On the other hand, the relay station supervisory control device 3 has a sub-monitoring controller that is responsible for the LTE in the upper direction and the LTE in the lower direction, respectively. The repeater monitoring controller 2 may be composed of only the sub-monitoring controller and the performance monitoring. The sub-monitor and controller can be connected to display various information collected in the repeater. Each level provides alarm and status information collection and display, performance information collection and display, and transfer and return functions through unique interface conditions and protocols.

The single station supervisory control device (1,4) is composed of five modules using an 8-bit microprocessor, which is composed of a supervisory control system of eclectic structure. And print, provide congestion and recovery functions, and monitor and control the national environment. In the present invention, the repeater supervisory control device 2 is responsible for monitoring the state of the repeater REG and controlling the national history environment.

The relay station supervisory control device 3 has the same function as the station supervisory control device except that the state of the wide-end station device LTE and the repeater REG are monitored and controlled.

3 is an internal configuration diagram of the repeater supervisory control apparatus 2 of the present invention, in which 10, 11 are service channel interface units, 30 is a sub-monitor controller, and 40 is a performance monitor. Indicates an optional indicator, respectively.

The upper and lower service channel interface units 10 and 11 are responsible for providing information and other short-circuit transmission channels of the supervisory control apparatus of the 565 Mbps optical transmission system, and the internal structure thereof is well-known in the domestic patent (notice 90-3237). Has been done.

The sub-monitor in the repeater responds by receiving polls from two adjacent main monitoring controllers (MMCs), so the operator can get information about the system status by the adjacent main monitoring controller even if the service channel in one direction is unsuccessful. .

The secondary monitoring controller (SMC) 30 is composed of one general microprocessor board, a relay driving circuit for controlling the national environment, and an input / output buffer circuit for monitoring the state thereof, and an internal configuration thereof is shown in FIG. The sub-monitor controller 40 collects and processes performance information and alarm information from the performance monitors 40, reports them according to an indicator request, and controls and monitors the national history environment.

The performance monitor 40 is composed of one general microprocessor board, and the internal configuration of FIG. 6 is the same. The performance monitor 40 has a function of directly connecting with the optical relay device REG0 to collect and process performance information and alarm information of the line signal and to report it to the sub-monitoring controller 30.

An optional indicator 50 is connected to the sub-monitoring controller to display only information collected from its own optical relay. The indicator 50 is configured as a general microprocessor board. The hardware of the indicator includes an LCD for displaying information, a controller for controlling the information, a keypad for controlling the information, a small printer and a driver for printing the information, an LED for displaying alarms and status, and a backup RAM for storing information when the power is turned off. It consists of a time clock (RTC) for providing time information, a ROM and a RAM, and a position read timer for preventing a firmware malfunction.

5 is a firmware flowchart of a sub-monitoring controller (SMC).

The firmware of the sub-monitoring controller is composed of an initialization module 610, an interlove handler 620, a main job 630, a digital alarm collection, and a system LED driving module. The initialization module 610 initializes the CPU, RAM, CTC, MT8952 and the like and sets a stack pointer, various buffers, and flags. After resetting the power supply, the processor performs the initialization module 601, performs the configuration module 611 to monitor the preliminary circuits, and enters the base job 612 which monitors the main job 630. . In this 612 state, there is a job registered in the interrupt handler module, and a corresponding main job 630 is performed.

630 is an MMC1 job 631 that processes information request and response data from two different MMCs, an MMC2 job 632 and an ISPM job 633 that analyzes response data of performance monitoring, and a sub-monitoring controller. It consists of timer jobs 634 for time calculations used. The tasks handled at 631 and 632 are intensive alert response, detailed alert response, performance information response, response to uncertain command reception, control command execution and control status response, response to reserve circuit configuration request, and the like. 633 is responsible for collecting and processing the request and response to the performance monitoring configuration, the alarm and performance information from the performance monitoring. Interrupt handler 620 is INTSVO 621, which is an interrupt registration routine for communicating with MMC1, INTSV1 622, which is an interrupt registration routine for communicating with MMC2, INTSV2 623, which is an interrupt registration routine for communicating with ISPM. It consists of a 50msec interrupt registration routine for INTSV3 (624) and INTSV4 (625) for communicating with the indicator.

7 is a firmware flowchart of the performance monitor (ISPM). The firmware of the performance monitor is composed of an initialization module 710, an information collection module 720, and an information transmission module 730, and has a configuration identical to that of the performance monitor in a single station.

The module 710 initializes a CPU, a RAM, a CTC, an MT8952, and sets a stack pointer, various buffers, and flags.

The information collection module 720 collects and analyzes alarm information and performance information from the REG. This module is composed of 10msce cycle information collection module, 1 second cycle information analysis module and occasional information collection module. The 10msec periodic information collection module consists of asynchronous alarm collection and processing routines and a parity error collection processing routine. The 1 second interval information analysis module is composed of an error type routine.

The information transmission module 730 is composed of an information request routine of the sub-monitor controller, which is a higher level, and an information transmission routine of the performance monitor.

8 is a firmware flowchart of a display device (DPE).

The indicator (DPE) dlm firmware clears RAM, turns off the LEDs, initializes the PIO, initializes the current time from the RTC, and resets the reset time to print the reset time. The main monitor controller command recognition unit 920, the main monitor controller command transmitter 930 for transmitting data to the main monitor controller, the switching device command recognition unit 940 for reading and analyzing the transmission data from the switching device, Switching device command transmission unit 950 for transmitting data to the device, a time job 960 for printing the accumulated performance information in units of 24 hours, changing the LCD mode, an interrupt for processing function key input from the operator or printing data. Since the module is configured as a processing unit 970 but exists as an option, the functions related to the main surveillance controller (930, 940) and the switching device (940, 950) Disable this function because it is not really needed.

The function key processor can be divided into four parts: an MMC ROOT that can request a command to the MMC, an RSCE ROOT that can request a command to the switching device (these two functions are disabled), an SMS ROOT that can request a command to the SMC, and There is a DPE ROOT that inputs the data necessary for monitoring control operation.

In the SMC ROOT, an integrated alarm request is required to know the aggregated alarm status of the optical transmission system, a detailed alarm request that requires the alarm information of a specific relay device in its own relay among the optical transmission systems, and its own relay device among the optical transmission systems. Knowing performance information requesting performance information for a specific relay device, control status request to find out the control status of its own repeater, control request to monitor and control its own repeater environmental condition, and knowing the communication status between the supervisory control devices of the optical transmission system There is a request for communication status information, and all functions are disabled in the RSCE ROOT so that no command word can be performed. The DPE ROOT sets the current year, month, day, hour, minute, second and hour and minute seconds to print the alarm.

Therefore, the present invention configured and operated as described above has an effect of being applied to a monitoring control device in a repeater capable of performing efficient operation and maintenance functions.

Claims (4)

Connected to the upper and lower service channel interface means (10,11) and the upper and lower service channel interface means (10,11) for providing information of the supervisory control device of the 565Mbps optical transmission system and other short-circuit transmission channels, and performance information and alarms. It is connected to the sub-monitoring controller 30 for collecting and processing information, and the upper and lower service channel interface means 10 and 11 and the sub-monitoring controller 30 to obtain performance information and alarm information of line and slave signals. And a performance monitor (40) for collecting and reporting to the sub-monitoring controller (30). The repeater supervisory control device according to claim 1, further comprising an indicator (50) connected to said sub-monitoring controller (30) for displaying information collected by itself. 2. The repeater supervisory control according to claim 1, wherein the sub-monitoring controller 30 includes one microprocessor unit and a relay driving circuit connected to the microprocessor unit and an input / output buffer circuit for monitoring the state thereof. Device. 2. The repeater supervisory control device according to claim 1, wherein the performance monitor (40) comprises one microprocessor unit.

Images