KR0168907B1 - Apparatus and method of control of system access between wireless paging data transmission earth station system and network managing system - Google Patents

Abstract

The present invention relates to a system connection control device and a control method between a radio call data transmission earth station system and a network management system. The multi-channel radio call data signals received from an electronic switch PS line through an FSK modulator 14 are used to control the TDM. Central station system 11 for multiplexing and BPSK modulation and transmitting toward satellites, receiving radio call data signals from satellites, performing BPSK synchronous demodulation, and performing TDM demultiplexing 12. A terminal station system 12 for transmitting an LSS to an LSS of a radio calling base station to which it is connected: a network as a dedicated computer system for performing control, including redundancy control with system management through state monitoring, for each sub-system of a central station and a terminal station. Management system (NMS): components of the central station system 11, a plurality of terminal station access control devices, and The central station system connection control device 15 connected to the network management system and the terminal station system configuration systems and the terminal station connection control device 16 connected to the central station connection control device are provided to provide a radio call data transmission earth station system as a whole. And a system connection control device 13 for connecting the network management system and performing necessary connection control.

Description

Radio call data transmission system access control device and control method between earth station system and network management system

1 is a connection diagram of a radio call data transmission earth station system according to the present invention.

2 is a block diagram of a system connection control apparatus according to the present invention.

3 is a controller board configuration diagram of a system connection control apparatus according to the present invention.

4 is a message flow diagram of a system access control apparatus according to the present invention.

5 is a message format and control structure diagram of a system access control apparatus according to the present invention.

The present invention provides a system connection between a radio call data transmission earth station system and a network management system required for accessing a network management system (NMS) for managing and controlling a radio call data transmission earth station system composed of one central station system and a plurality of terminal station systems. It relates to a control device and a control method.

The present invention relates to the operation of the radio call data transmission earth station system. As a configuration system of each earth station system, a plurality of configuration systems having different connection standards and one network management system are provided through a seamless 1: N communication connection. It is in accordance with the needs of any intermediates that allow management and control to be carried out perfectly.

Up to now, it meets the special connection condition of earth station network management system and component systems for satellite communication which is not designed for the same purpose in Korea, and it is also applied to expand the communication network by increasing the number of systems of about 140 terminal stations. Because of the structure and performance that can be possible, the system access technology that satisfies the connection standard of each component system based on the common basic configuration of internal controllers in the technical aspect, and the addressing and constant that can smoothly control the transmission and reception of messages between systems The command cycle traffic control technology is used.

An object of the present invention is to wirelessly call and utilize the network management system to perform the control and management of the detailed configuration systems of the central station and the terminal station through a smooth communication connection between the wireless paging data transmission earth station system and the network management system. The present invention provides a system access control device and a control method between a data transmission earth station system and a network management system.

In order to achieve the above object, the present invention provides a central station system for multiplexing multi-channel radio call data signals received from an electronic switchboard PS line through an FSK modulator to TDM, performing BPSK modulation, and then transmitting them to a satellite. Receiving the radio call data signal, performing BPSK synchronous demodulation, and performing TDM demultiplexing to transmit the data of each channel transmitted to the LSS of the connected radio call base station: each part of the central station and the terminal station Network Management System (NMS) as a dedicated computer system that performs control including system redundancy control with system management through state monitoring for the systems: constituent systems of the central station system, multiple terminal station access control devices, and network System of the central station system access control device and terminal station system connected to the management system; A terminal station connection control device connected to the central station connection control device is provided, and a system connection control device for connecting a network management system to a radio call data transmission earth station system as a whole and performing necessary connection control.

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

FIG. 1 is a connection diagram of a radio call data transmission earth station system according to the present invention, which performs inter-system connection and communication control as one component in the entire radio call data transmission earth station system.

The configuration and internal operation of the device are based on the controller board of the functional configuration as shown in FIG. 3 that can be commonly applied to each configuration controller, and the main controller, local controller, and remote controller at the central earth station side as shown in FIG. Communication between the controllers is carried out according to the message procedure as shown in FIG. 4 by installing software of unique function assigned to each controller characterized by the terminal international controller of the terminal earth station to be installed at the terminal and the remote site. As a traffic control method based on the control structure, one network management system can transmit and receive messages with multiple components without conflict.

Central station system: Earth station system that multiplexes multi-channel radio call data signals received from TDX-PS line through TSK, modulates BPSK, and transmits them to satellite through FSK modulator.

Terminal station system: Earth station system which receives radio call data signal from satellite, performs BPSK synchronous demodulation, performs TDM demultiplexing, and transmits data of each channel to LSS of connected radio call base station.

Network Management System (NMS): Dedicated computer system that performs various control of each sub-system of central station and terminal station, including redundancy control with system management through status monitoring.

System access control device: Configuration system of a central station system, a plurality of terminal station access control devices, and a terminal station system access control device connected to a network management system and a configuration system of a terminal station system and a terminal connected to the central station access control device Comprised of a station access control device, a device that connects a network management system to a radio call data transmission earth station system and performs necessary access control.

Based on the above description, each connection is described as follows.

-Connection of the device to a radio call data transmission earth station system (FIG. 1).

This device has the connection standard suitable for the connection standard of each system so that the internal systems constituting the wireless call data transmission central earth station system of FIG. 1 and the internal systems constituting the terminal earth station system can communicate with the network management system. .

Central station system access

This system is composed of wireless transmitter, modulator, and multiplexer, and the detailed controllers and the connection specifications of each component are shown in Table 1.

The central station system access control device constituting this apparatus has a serial communication port of a suitable connection standard for accessing these detailed controllers, and performs message transmission and reception in accordance with the protocol, transmission speed, and communication method.

In addition, one expansion port is added to the network expansion.

Terminal station system connection

The system consists of a demodulator, a demultiplexer, and a subscriber. The detailed controllers and the connection specifications of each component are shown in Table 2.

The terminal station system access control device constituting this apparatus has a serial communication port of a suitable connection standard for accessing these detailed controllers, and performs transmission and reception of messages in accordance with the protocol, transmission rate and communication method.

In addition, one expansion port is added to the network for expansion.

Network management system access

The network management system is a single system installed on the central station side. The central station system access control device constituting this device has a serial communication port of the appropriate connection standard for connection with these detailed controllers, and the protocol through the control method of the device. Sends and receives a message suitable for transmission, transmission speed, and communication method.

1) Communication Method: Full Duplex 2): Transmission Method: Asynchronous

3) Protocol: Async ASCⅡ 4) Baud Rate: 9600 [bps]

5) Physical Connection: RS-232C 6) Connector: DB9 / Female

2 is a configuration diagram of a system access control apparatus according to the present invention, which is composed of a central station system access control apparatus and a multi-station system access control apparatus as shown in FIG. Master controller connected to RS-232 serial bus, controller of central station system and local controller (Loca) connected to RS-232 serial bus, and FSK modulator 1: 1 with remote station controller The terminal station system access control device is connected to each controller of the terminal station system by RS-232 serial bus and is connected via the remote controller of the central station system access control device and the FSK modulator. Consists of termian.

Remote controllers supporting multiple end station systems are connected via an RS-485 serial bus, which is connected in a multi-drop format even during expansion, and the master controller and the local controller are connected via a parallel bus in one shelf. .

3 is a configuration diagram of a controller board of a system access control apparatus according to the present invention, in which the main controller, the local controller, the remote controller, and the terminal station controllers of the system access control apparatus are mounted based on a common basic configuration of each board. It works by

However, due to the difference in board function and physical connection, I / O configuration may be different for each board, but the interaction and signal exchange of components are as follows.

First, when power is applied, the CPU 31 outputs the address of the ROM element with the ROM 32 / RD signal in which the program resides immediately after the power reset.

When the output device address passes through the decoder, it becomes the / CS1 signal. When the signal reaches the ROM, the program mounted in each controller is started.

The CPU 31 accesses the ROM to the RAM 33, which is a memory for storing data, while inputting / outputting the binarized digital data D0 to D7 via a ROM 32 RHK 8-bit data bus. Input and output using the / CS2 signal in the same process.

The connection communication control element 34 receives the control signal / CS3 of the central processing unit 31 and transmits the data inputted by the central processing unit so that communication is performed in accordance with the protocol and the physical connection. Use to output to communication port.

Then, TTL-RS-232C (remote controller RS-485) signal level conversion is performed by the signal level conversion element, which is an auxiliary circuit.

On the contrary, when the received data is input to the internal serial-parallel register of the connected communication control element 34 after the RS-232C (remote controller RS-485) -TTL level conversion through the same communication port, an interrupt signal is sent to the central processing unit. When INT is outputted, it indicates that there is reception data, and when / CS3 of the CPU 31 arrives, the data is output to the CPU 31. N connection board communication buffers are buffers for controlling the transmission and reception of data through the parallel bus between the main controller and the local controller in one shelf, and the control signal / CS # N of the central processing unit 31 is N. I / O is input and output data.

In the case of the remote controller or the terminal international controller, the input / output is interrupted like other cases by the control of the central processing unit as a buffer for controlling the connection to the FSK modulator.

The device address decoder decodes the output device address of the CPU and outputs the corresponding chip select signal / CS to the device in accordance with the timing of the read and write control signals of the CPU.

4 is a message flow diagram of a system access control apparatus according to the present invention.

The main controller, the local controller, the remote controller, and the terminal station controllers of the system access control apparatus operate as follows by the unique functions of the software of each board according to the message flow shown in the figure.

First, when the master is powered, it checks its own state and initializes each I / O device.

Then, it receives a periodic status command message sent from the network management apparatus, and sends a self status report message to the network management apparatus in response thereto.

The network management device performs the same procedures as the main controller on the local controller, the remote controller, and the terminal controller to check the normal state of the main controller, the local controller, the remote controller, and the terminal controller, and then sets up the configuration system of the radio call data transmission earth station. Send a command message.

Upon receiving this, the master controller grasps each address of the destination indicated in the message and immediately sends the message to the local controller for the configuration system of the central station and to the remote controller for the terminal station configuration system.

In addition, when a response message is received from a local controller or a remote controller as a response message to a controller sent to the network management system, the network management device (NMS) is stacked in the first-in-first-out (FIFO) buffer space of the memory and in order. To send).

In response to the status request message, the status response messages of each component system received through the remote controller or the local controller are also performed in the same order.

In the local controller, when the power is applied, the magnetic state is checked and each I / O device is initialized.

Then, upon receiving the periodic status command message sent from the master controller, the self-status report message corresponding thereto is sent to the master controller.

Upon receipt of the status / setting command message for the configuration system of the radio call data transmission central earth station of the network management system from the master controller, each address of the destination indicated in the message is identified, and then immediately transferred to the communication port corresponding to the configuration system of the central station. Send the message.

When a status / response message is received from the configuration system in response to the transmission message, the messages are stored in the FIFO buffer space in memory and sent to the master controller in order.

When the power is applied, the remote controller checks the magnetic state and initializes each I / O device including the FSK modulator.

Then, after receiving the periodic status command message sent from the main controller, the self status report message corresponding to the main status message is sent to the main controller.

Upon receipt of the status / setting command message for the configuration system of the mobile terminal data station of the network management system from the master controller, each address of the destination indicated in the message is identified and immediately transmitted to the corresponding terminal international controller.

When a status / response message is received from the terminal controller in response to the transmission message, the message is stored in the FIFO buffer space of the memory and transmitted to the main controller in order.

When the power is applied, the terminal checks its own state and initializes each I / O device including the FSK demodulator.

Then, after receiving the periodic status command message sent from the remote controller, it sends a self-status report message to the main controller in response.

Immediately after receiving the status / setting command message for the configuration system of the terminal earth station from the remote controller, identify each address of the destination indicated in the message, and then immediately correspond to the corresponding communication port for the configuration system of the terminal station. Send a message via.

When a status / response message is received from the configuration system in response to the transmission message, the message is stored in the FIFO buffer space in memory and sent to the remote controller in order.

5 is a message format and control structure diagram of a system access control apparatus according to the present invention, and shows a message traffic control method of the apparatus and a network management system.

Software according to the message traffic control method composed of the following polling method and addressing method so that the main controller, local controller, remote controller, and international terminal controller of this system access control system can communicate smoothly with one network management system. Operate using the message format shown in the figure.

The addressing method for the network management system request / configuration message is to compare the controller address and its communication port address when the master controller receives the message from the network management system, and transmit it to the corresponding communication port only when it matches.

Then, a hardware DIP switch is installed in the board of each controller of the access control device except for the main controller through which the message must pass, giving a unique address, and the software writes 1 [byte] recorded by the network management system when processing the received message of the message. Compare the address value of.

In doing so, if the two values match, go to the next step, otherwise discard the message.

In the next step, there is a quantitative difference according to each controller, but basically, it has the address of its communication port and checks the address of the destination in the message and sends the message to the corresponding communication port.

The addressing method for the network management system status / response message is that each controller of this access control device compares the configuration system address of the received message with its communication port address except that the message must pass through. Send a message to the corresponding communication port in the direction.

When the master controller receives a message from the local controller or remote controller, it compares the network management system address with its communication port address and sends it to the corresponding communication port only if it matches. Otherwise, the master controller discards the message.

In the message traffic polling method, one network management system has a total communication time T [sec] 1 / A request / setting message is sent at intervals of N divisions.

Each controller of the configuration system, which is the destination of the message, checks the comparison of its own address and classifies the type of message for status setting or parameter setting according to the message type, and then performs the corresponding message processing.

There is no time delay for this execution, and upon completion of the process, a status / response message is created and sent to the network management system.

Each of the controllers of the system access control apparatus of the present invention performs only the self address verification and the communication port connection to the received message, so that the message is transmitted from the sender to the receiver without damage.

In case of main controller, local controller, and terminal controller, in which one controller is connected to multiple constituent systems, each communication port is monitored at regular time intervals to communicate with each constituent system of the earth station system connected to the communication port. And the received messages are processed sequentially so that there is no conflict.

As described above, the present invention not only makes the connection between the radio call data transmission earth station system and the network management device easy and simple, but also receives a total of 200 as a result of accommodating the main controller, the local controller, and the remote controller as one system. It is possible to access through terminal international controller and dedicated line, and further expansion of communication network is possible by using expansion port and expansion system, and it is easy to connect with NMS, so smooth control and management is possible. Is possible.

Claims (3)

Central station system 11 for multiplexing multi-channel radio call data signals received from all electronic switch PS line through FSK modulator 14 with TDM, BPSK modulation, and then transmitting them to satellites: Radio call data from satellite Receiving a signal, then performing BPSK synchronous demodulation and performing TDM demultiplexing to transmit the data of each channel transmitted to the LSS of the radio calling base station to which it is connected. Network Management System (NMS) as a dedicated computer system for performing control including redundancy control with system management via state monitoring for the following systems: constituent systems of the central station system 11, a plurality of terminal station access control devices, And the central station system access control device 15 connected to the network management system, the components of the terminal station system, and the central station access control device. Wireless calling, characterized in that it comprises a system access control device (13) which includes a terminal station access control device (16) to which it belongs, and which connects a network management system to a radio call data transmission earth station system as a whole. System connection control device between data transmission earth station system and network management system. The central processing unit according to claim 1, wherein the controller board in the system connection control device 13 controls data of each element in the board and performs data processing for composing and decomposing messages through operation and input / output of data according to a resident program. (31) A program resident memory providing a storage space for a program having a different operation according to each controller. 32: Operation results and transmission / reception data of the central processing unit 31 are stored in the central processing unit 31. Data storage memory 33 which provides a storage space to be stored under the control of the control unit: under the control of the central processing unit so that communication for a protocol and a physical connection is performed, the transmission / reception data is serial-to-parallel according to the input / output direction. Connection communication control element 34 for performing data conversion and TTL-RS-232C mutual signal level conversion: communication between the main controller and the local control period. The input / output is intermittent under the control of the central processing unit 31 as a buffer for controlling the controller. In the case of a remote controller or a terminal station controller, the central processing unit 31 is a buffer for controlling the connection to the FSK modulator. Connection board communication buffer 35 in which input and output are interrupted by control: and the output element address of the central processing unit 31 is decoded so that the corresponding chip selection signal is read and written by the central processing unit 31. And a device address decoder (36) for outputting in accordance with the system. The apparatus for controlling a system connection between a radio call data transmission earth station system and a network management system. In a control method applied to a system connection control device between a radio call data transmission earth station system and a network management system, when a master power is applied, the master controller checks its own state and initializes each I / O device before network management. Step 1: Receiving periodic status command message sent from the device and sending a self status report message to the network management device. The network management device performs the same procedure as the master controller for the local controller, the remote controller, and the terminal controller. After confirming the normal status of the main controller, the local controller, the remote controller, and the terminal controller, the second step of transmitting the setup command message to the configuration system of the radio call data transmission earth station is as soon as the master controller receives the setup command message. Identify each address of the destination shown on the In this case, the corresponding message is transmitted to the local controller and the remote controller for the terminal station configuration system, and at the same time, when the response message is received from the local controller or the remote controller as a response message to the controller transmitted to the network management system, the FIFO (First -In-First-Out) Step 3: Transmitting to the network management device (NMS) in order by stacking in the buffer space: When power is supplied from the local controller (Local), the magnetic state is checked and each I / O device is checked. After the initialization and receiving the periodic status command message sent from the master controller, and transmitting a self-status report message to the master controller in response to the fourth step: A system for configuring a wireless call data transmission central earth station of the network management system from the master controller As soon as a status / setting command message is received, each address of the destination indicated in the message is parsed. Then, the fifth step of transmitting the message to the communication port corresponding to the configuration system of the central station: when receiving a status / response message from the configuration system as a response to the transmission message, the message is stacked in the FIFO buffer space of the memory The sixth step of transmitting to the main controller by the controller: The remote controller (Remote) checks its own state and initializes each I / O device including the FSK modulator after power is applied, and then sends a periodic status command message sent from the main controller. After receiving, sending a self-status report message responsive to it to the main controller: a message immediately after receiving a status / setting command message from the main controller to the configuration system of the terminal station of the radio call data transmission system of the network management system. After grasping each address of the destination shown in the Step 8: Transmitting the message to the main controller based on the order in which the message is accumulated in the FIFO buffer space of the memory when receiving the status / response message from the terminal international controller as a response to the transmission message. (Terminal) checks self-status when power is applied, initializes each I / O device including FSK modulator, receives periodic status command message sent from remote controller and then responds to self-status report message. 10th step of transmitting to the mobile station: immediately after receiving the status / setting command message for the configuration system of the radio call data transmission terminal earth station of the network management system from the remote controller, grasping each address of the destination indicated in the message, and immediately 11th step to send a message to the configuration system through the corresponding communication port And a twelfth step of receiving a status / response message from a configuration system as a response to the transmission message, and storing the messages in the FIFO buffer space of the memory and sequentially transmitting the messages to the remote controller. Data transmission system connection control method between earth station system and network management system.