KR100250621B1 - Data recovering apparatus when restarting central control station of satellite communication system - Google Patents

Abstract

PURPOSE: The apparatus for restoring data is provided to prepare the loss of configuration data by restoring the configuration data. CONSTITUTION: An operator terminal(51) inputs data to control and manage the entire system including base stations(3A,3B), and monitors a network operation state. A controller(52) controls the entire system while communicating with a processor(401) of a central control station(400) through a contracted protocol, according to an instruction inputted through the operator terminal(51). A system management data storage(402) stores the data necessary for communication network operating and system managing. The central control station(400) comprises as follows. A configuration data storage(404) stores configuration data which is base information necessary for the communication network operating. A system information management(405) updates the configuration data on the basis of system information and communication resource operating information frequently changed by a system operator. A download management(406) downloads backup data from the network management system(500) and stores the backup data in the configuration data storage(404) under control of the processor(401) in a system removing process.

Description

Data restoration device when restarting central control station in satellite communication system

The present invention relates to a control system for managing a satellite communication network, and in particular, central control in a satellite communication system having a function of restoring the configuration data in case configuration data is lost due to power failure or artificial restart. The present invention relates to a data restoration apparatus at local startup.

When the network operator who manages the satellite communication network needs to control the subordinate base station or the central control station, the M & C (Monitoring & Control) command is transmitted to the earth station through the operator terminal operated as an interface device between the operator and the system. In this case, the corresponding station is to perform the operation according to the M & C command transmitted from the operator terminal, and as a result, send a message back to the operator terminal.

On the other hand, Figure 1 is a block diagram for explaining such a series of network management and control process, in Figure 1, reference numeral 1 is a satellite having a plurality of communication channels, 2 is a central control for controlling the entire satellite communication system Station 3 (3A, 3B) has interface functions for terminals such as exchange terminals 11A, 11B, telephones 12A, 12B, computers, data terminals 13A, 13B, and facsimile 14A, 14B. In addition, the base station provides a call function between the various terminals by establishing a call through data communication with the central control station 2.

The configuration of the central control station 2 is as follows.

Reference numeral 10 is an antenna for transmitting / receiving an uplink signal transmitted to the satellite 1 side and a downlink signal transmitted from the satellite, and 20 is an ultra-high frequency received by the antenna 10. RF transmitter / receiver for converting downlink signal of band to intermediate frequency (IF) signal and converting 70MHz band of intermediate frequency (IF) signal to RF signal of ultra high frequency band at the same time for uplink signal, and 30 is 70MHz IF processing stage for processing the intermediate frequency (IF) signal of the band, reference numeral 40 is a response message transmitted from the corresponding base station after transmitting a control message to each base station through the IF processing stage 30 Perform the polling function to check the status of each base station based on the base station, and if there is a call request from the subordinate base station, The network control unit that determines whether the station is in a communication state and, when in a communication state, allocates an available traffic channel of the satellite to both base stations so that both base stations can directly communicate with each other. In addition, 50 is a network management system that enables the satellite network manager to monitor the overall network operation and to control the entire satellite system including the base station as needed.

That is, in the conventional satellite system having the above-described configuration, when there is a call setup request from an arbitrary subscriber base station 3, the processor (not shown) inside the network control unit 40 obtains base station information obtained by polling, and Based on the available channel state information, the channel of the requested bandwidth is allocated among the currently available communication channels. In addition, the communication network operator operates the operator terminal (not shown) provided in the network management system 50 when updating the data in the subordinate base station or the central station or controlling the operation of some components. The control unit (M &C; Monitoring & Control) command to the 40) bar, the network control unit 40 sends the control command received from the operator terminal to the corresponding earth station through the service channel, and then the control transmitted from the corresponding earth station By notifying the command execution result to the network management system 50, the network operator can check the command execution result through a monitor provided in the operator terminal.

Meanwhile, in the network control unit 40 of the central control station 2, configuration data of a system including subscriber information and channel usage status and information on each earth station which are absolutely necessary for the operation of the communication network is stored. In the conventional satellite communication system, in case of sudden power failure or when the operator restarts the system when necessary, the configuration data may be lost at a time, which may interfere with the normal restart of the system. There was.

The present invention has been made in view of the above circumstances, and provides a central control station in a satellite communication system equipped with a function of restoring configuration data in case configuration data is lost due to power failure or artificial system restart. Its purpose is to provide a data recovery device upon restart.

1 is an overall system configuration for explaining the outline of a general satellite communication system.

2 is a block diagram showing a satellite communication system equipped with a data recovery function upon restart of the central control station according to an embodiment of the present invention;

Explanation of symbols on the main parts of the drawings

1: satellite 2: central control station

3A, 3B: base station 11A, 11B: switchboard

12A, 12B: Telephone 13A, 13B: Data Terminal

14A, 14B: Facsimile 10: Antenna

20: RF transmitting and receiving terminal 30: IF processing stage

40,400: Network control unit 50,500: Network management system

51: operator terminal 52401: processor

53: command storage unit 54: input command confirmation unit

55: Terminal Server 56: Hard Disk Driver (HDD)

57: Magnetic Tape Driver 58402: Program Storage

403: M & C interface 404: configuration data storage

405: system information management unit 406: download management unit

407: dual port RAM (DP RAM) 408: service channel controller (SCC)

In order to realize the above object, the apparatus for restoring data upon restarting the central control station according to the present invention includes: a plurality of base stations each coupled with a plurality of subscribers; And a network management means for communicating with a processor of a central control station and managing overall system operation according to an operator's command. In the network management means, the operator inputs data necessary for overall system control and management including a base station and an operator terminal for monitoring the network operation status, and the central control station according to a command inputted through the operator terminal. A control unit for controlling the overall system while communicating through a protocol agreed with the processor of the processor, and a system management data storage unit for storing data for communication network operation and system management is provided, wherein the central control station configuration data which is the basic information required for communication network operation A configuration data storage unit for storing data, a system information management unit for updating data stored in the configuration data storage unit on the basis of system information and communication resource operation information to be changed and set by a system operator, and upon system restart. Control of the processor Accordingly, it is characterized in that it comprises a download management unit for downloading and setting the backup data from the network management means stored in the configuration data storage unit.

That is, according to the present invention having the above configuration, even when the system of the central control station is restarted due to an unexpected accident such as a power failure, the configuration data essential for the normal operation of the system can be backed up without loss. It can greatly reduce the normal restart recovery time of the system.

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

2 is a block diagram showing the configuration of the central control station of the satellite communication system with a data recovery function upon restarting the central control station according to an embodiment of the present invention, which performs substantially the same function as the configuration shown in FIG. The same reference numerals are used for the components, and detailed description thereof will be omitted.

In FIG. 2, reference numeral 500 denotes a network management system configured to execute an up-date operation of configuration data in response to a request of the network controller 400 when the central control station 2 is restarted. The management system 500 inputs through the operator terminal 51 and the operator terminal 51 for the network manager to input data necessary for the control and management of the entire system including the base station and to monitor the network operation status. The processor 52 for controlling the overall system while communicating with the main processor 401 in the network controller 400 to be described later according to the command to be described later, the operating program of the processor 52 is stored The program storage unit 58, and a command storage unit 53 for storing the various commands used in the satellite communication network management system 500 as data, the command storage unit 53 An input command checking unit 54 for checking an error of an input command by executing a syntax check and semantic check on a command input through the operator terminal 51 based on the stored data. And a terminal server 55 having a redundant structure that provides a communication line between the processor 52 and the main processor 401 of the network controller 400, and stores data necessary for communication network operation and system management. Magnetic tape that stores charge data such as TC (Trunk Code) data and calling time of calling / receiving subscribers to charge the call fee according to the channel usage for subscribers communicating through hard disk drive (HDD) 56, satellite channels It consists of a drive (MTD) 57.

On the other hand, reference numeral 400 is a network for requesting a backup (back up) of the configuration data to the network management system 500 side upon system reboot, and download the backup data from the network management system 500 to restore the configuration data based on this As a control unit, the internal configuration of the network control unit 400 is as follows.

Reference numeral 401 transmits a control command transmitted from the operator terminal 51 to the corresponding earth station while communicating with the network management system 500, and notifies the operator terminal 51 by informing the operator terminal 51 of the response message transmitted from the earth station. The processor exemplifies a system-wide control operation, 402 is a program storage unit for storing an operation program of the processor 401, and 403 is a protocol contracted with the terminal server 55 of the network management system 500. It is an M & C interface for communication.

In addition, reference numeral 404 is a configuration data storage unit for storing the configuration data (Configuration Data), which is the basic information necessary for the operation of the communication network, such as subscriber information or system information, 405 is the system information that is changed and set the hourly point by the system operator; The system information management unit for updating data stored in the configuration data storage unit 404 based on the communication resource operation information, and the network management system 500 under the control of the processor 401 upon system restart. It is a download management unit which downloads the back up data from the down load and stores it in the configuration data storage unit 404. Reference numeral 408 denotes packet information from a message applied by the IF processing unit 30. Service to extract and generate information of TDM (Time Division Multiplex) stream to IF processing unit 30 Board controller; a (SCC Service Channel Controller), and 407 is a dual port RAM (Dual Port RAM) for sending and receiving data between the processor 401 and the service channel controller (SCC) (408).

Next, the operation of the device having the above configuration will be described.

The satellite communication network operation manager monitors the system status including the satellite channel and each base station currently operating through the operator terminal 51 of the network management system 500 and inputs data for system control through the contracted commands, if necessary. When the command is input by the operator, the processor 52 first controls the input command checker 54 to parse and semantic check the command input by the operator. By executing the command, you can check whether the command entered is in error.

When an error is detected, such as an error check result, the command input by the operator is confirmed as an unusable command in the system, the processor 52 outputs an error message to the operator terminal 51, and the check result is abnormal. If not, the command is transmitted to the network controller 400 through the terminal server 55.

Meanwhile, the transmitted command is applied to the processor 401 of the network control unit 400 via the M & C interface 403, and the processor 401 of the network control unit receives the full command transmitted from the network management system 500. The service channel controller (SCC) 408 analyzes and records the execution message of the corresponding command in the reserved address of the dual port RAM (DP RAM) 407 according to the operation program stored in the program storage unit 402. Through this, the execution message of the command is transmitted to the earth station where the command is to be executed.

Subsequently, when a response message according to the command execution result is transmitted from the corresponding earth station where the command is executed, the processor 401 of the network control unit 400 uses the configuration data storage unit through the system information management unit 405 based on this. After updating the data of the 404, and transmits it to the operator terminal 51 through the processor 52 of the network management system 500, the system operator through the monitor (not shown) of the operator terminal 51 You can check the result of command execution. At this time, the processor 52 of the network management system 500 updates the information of the hard disk drive (HDD) 56 based on a command execution result message transmitted from the processor 401 of the network control unit 400. This will always save the latest information after the change.

On the other hand, as described above, when the network control unit 400 of the central control station is temporarily restarted in the off state due to the cause of power failure or the like while the control operation of the system is normally executed, the network control unit 400 The processor 401 restarts and backs up configuration data to the processor 52 side of the network management system 500 in accordance with an operation program set in the program storage unit 402 at the same time as restarting. It will send a request message.

In contrast, the processor 52 of the network management system 500 reads out system information and radio resource allocation information stored in the hard disk drive 56, and controls the network controller 400 through the terminal server 55. The processor 401 downloads the configuration data to the side, and the processor 401 of the network controller 400 controls the download manager 406 to receive data applied through the M & C interface 403. By being downloaded to the storage unit 404, the lost configuration data is restored as the system is temporarily turned off due to a cause such as a power failure.

That is, according to the embodiment, a data restoration apparatus can be realized when the central control station is restarted in the satellite communication system which has a restoration function of the configuration data in preparation for the loss of configuration data due to power failure or artificial restart. It becomes possible.

On the other hand, the present invention is not limited to the above embodiments and can be modified in various ways without departing from the technical gist of the present invention.

As described above, according to the present invention, even when the system of the central control station is restarted due to an unexpected accident such as a power failure, the configuration data essential for the normal operation of the system can be backed up without loss. Normal restart recovery time can be significantly shortened.

Claims (1)

A plurality of base stations, each of which is combined with a plurality of subscribers, a central control station which allocates and controls available communication channels for the base station with call request, and communicates with the processor of the central control station according to the operator's command to perform system-wide operations. A satellite communication system equipped with a network management means for managing; In the network management means, the operator inputs data necessary for overall system control and management including a base station and an operator terminal for monitoring the network operation status, and the central control station according to a command inputted through the operator terminal. It is provided with a control unit for controlling the overall system while communicating through the protocol of the processor of the processor, a system management data storage unit for storing data for communication network operation and system management The central control station stores a configuration data storage unit for storing configuration data, which is basic information necessary for operation of a communication network, and the configuration data storage unit based on system information and communication resource operation information to be changed and set by a system operator every hour. And a download management unit for downloading the backup data from the network management unit and storing the configuration data in the configuration data storage unit according to the control of the processor when the system is restarted. Data recovery device upon restart of the central control station in the satellite communication system.

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