KR0164835B1 - Atm hdlc/sdlc converting apparatus & its controlling method - Google Patents
Atm hdlc/sdlc converting apparatus & its controlling method Download PDFInfo
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- KR0164835B1 KR0164835B1 KR1019960001925A KR19960001925A KR0164835B1 KR 0164835 B1 KR0164835 B1 KR 0164835B1 KR 1019960001925 A KR1019960001925 A KR 1019960001925A KR 19960001925 A KR19960001925 A KR 19960001925A KR 0164835 B1 KR0164835 B1 KR 0164835B1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
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Abstract
1. 청구범위에 기재된 발명이 속한 기술분야1. TECHNICAL FIELD OF THE INVENTION
비동기 전송시스템에서 각 교환국의 감시제어장치간에 서로 통신이 원활하게 이루어지도록 HDLC/SDLC 프로토콜을 상호 전환하는 기술이다.It is a technology to switch between HDLC / SDLC protocols so that the monitoring and control devices of each switching station can communicate with each other in an asynchronous transmission system.
2. 발명이 해결하고자 하는 기술적 과제2. Technical problem to be solved by the invention
비동기 전송시스템에서는 HDLC프로토콜을 사용하는 감시제어장치와 SDLC프로토콜을 사용하여 감시제어 데이타를 전송하는 광전송장치사이에 서로 상이한 프로토콜을 서로 포맷 변환하여 각 교환국내의 감시제어장치간에 통신이 가능하도록 한다.In the asynchronous transmission system, between the monitoring control device using the HDLC protocol and the optical transmission device transmitting the monitoring control data using the SDLC protocol, the different protocols are converted to each other to enable communication between the monitoring control devices in each switching center.
3. 발명의 해결방법의 요지3. Summary of Solution to Invention
상기 제1교환국의 감시제어장치로부터 HDLC데이타가 수신될 시 HDLC데이타 포맷을 SDLC데이타 포맷으로 변환하여 상기 제2교환국으로 전송하고, 상기 제2교환국으로 SDLC데이타가 수신될 시 상기 SDLC데이타 포맷을 HDLC데이타 포맷으로 변환하여 상기 제2교환국의 감시장치로 전송한다.When HDLC data is received from the supervisory control device of the first switching center, the HDLC data format is converted into the SDLC data format and transmitted to the second switching center. When the SDLC data is received by the second switching station, the SDLC data format is HDLC. The data is converted into a data format and transmitted to the monitoring apparatus of the second switching center.
4. 발명의 중요한 용도4. Important uses of the invention
비동기 전송시스템에서 프로토콜을 전환하는데 적용한다.Applied to switch protocol in asynchronous transmission system.
Description
제1도는 본 발명에 따른 HDLC/SDLC 프로토콜 전환하기 위한 비동기 전송시스템의 블럭구성도.1 is a block diagram of an asynchronous transmission system for switching HDLC / SDLC protocol according to the present invention.
제2도는 제1도중 프로토콜 전환장치(12,22)의 상세블럭 구성도.2 is a detailed block diagram of the protocol switching device (12, 22) of the first diagram.
제3도는 본 발명에 따른 프로토콜 변환 제어 흐름도.3 is a protocol conversion control flowchart according to the present invention.
제4도는 본 발명에 따른 HDLC 인터럽트 처리 제어 흐름도.4 is an HDLC interrupt processing control flowchart according to the present invention.
제5도는 본 발명에 따른 SDLC 인터럽트 처리 제어 흐름도.5 is an SDLC interrupt processing control flowchart according to the present invention.
본 발명은 유럽형(CEPT) 비동기 전송시스템에 관한 것으로, 특히 유럽형(CEPT) 비동기 전송시스템에서 각 교환국의 감시제어장치간에 서로 통신이 원할하게 이루어지도록 HDLC/SDLC(High Level Data Link Control/Synchronous Data Link Control)프로토콜을 상호 전환하는 HDLC/SDLC전환장치 및 제어방법에 관한 것이다.The present invention relates to a European-type (CEPT) asynchronous transmission system, in particular in the European-type (CEPT) asynchronous transmission system HDLC / SDLC (High Level Data Link Control / Synchronous Data Link) to facilitate communication between the monitoring and control devices of each switching center. The present invention relates to an HDLC / SDLC conversion device and a control method for mutually switching protocols.
일반적으로 유럽형 비동기 전송시스템은 각 교환국내의 감시제어장치와 광전송장치간에 HDLC프로토콜을 주고받아 광전송장치를 감시하고, 각 교환국의 광전송장치간에 SDLC 프로토콜을 주고받아 교환국간에 통신을 할 수 있도록 되어 있다. 이와같은 유럽형 비동기 전송시스템에서는 HDLC프로토콜을 사용하는 감시제어장치와 SDLC프로토콜을 사용하여 감시제어 데이타를 전송하는 광전송장치사이에 서로 상이한 프로토콜로 인하여 각 교환국내의 감시제어장치간에 통신이 불가능한 문제점이 있었다.In general, the European asynchronous transmission system monitors the optical transmission device by exchanging HDLC protocol between the supervisory control device and the optical transmission device in each exchange station, and exchanges the SDLC protocol between the optical transmission device of each exchange station to communicate with each other. In this type of European asynchronous transmission system, there is a problem that communication between the monitoring control devices in each switching center is impossible due to the different protocols between the monitoring control device using the HDLC protocol and the optical transmission device transmitting the monitoring control data using the SDLC protocol. .
따라서 본 발명의 목적은 상기와 같은 문제를 해결하기 위해 유럽형 비동기 전송시스템에서 각 교환국내의 감시제어장치간에 통신을 할 수 있도록 HDLC/SDLC프로토콜을 상호 전환하는 HDLC/SDLC전환장치 및 제어방법을 제공함에 있다.Accordingly, an object of the present invention is to provide an HDLC / SDLC switching device and a control method for switching between HDLC / SDLC protocols so as to communicate between monitoring and control devices in each exchange in a European asynchronous transmission system. Is in.
이하 본 발명을 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
제1도는 본 발명에 따른 HDLC/SDLC 프로토콜을 전환하기 위한 비동기 전송시스템의 블럭구성도로서, A교환국(10)과 B교환국(20)이 서로 연결되어 있다. 상기 A,B교환국(10,20)은 감시제어장치(11,21)와 프로토콜 전환장치(12,22), 송신부(13,24), 수신부(14,23)로 이루어진 광전송장치(15,25)를 구비하고 있다.1 is a block diagram of an asynchronous transmission system for switching the HDLC / SDLC protocol according to the present invention, in which an A switch 10 and a B switch 20 are connected to each other. The A and B switching stations 10 and 20 are optical transmission devices 15 and 25 including monitoring control devices 11 and 21, protocol switching devices 12 and 22, transmitters 13 and 24, and receivers 14 and 23. ).
제2도는 제1도중 프로토콜 전환장치(12,22)의 상세블럭 구성도로서, HDLC포맷 데이타를 송수신하는 HDLC송수신부(32)와, SDLC포맷 데이타를 송수신하는 SDLC송수신부(34)와, 상기 HDLC송수신부(32)로부터 수신된 HDLC포맷 데이타를 SDLC포맷 데이타로 변환하여 상기 SDLC송수신부(34)로 출력하고, 상기 SDLC송수신부(34)로부터 수신된 SDLC포맷 데이타를 HDLC포맷 데이타로 변환하여 상기 HDLC송수신부(32)로 출력하는 MPU(30)와, 음성채널 제어신호를 발생하는 음성채널부(38)와, 상기 음성채널부(38)로부터 수신된 신호와 상기 SDLC송수신부(34)로부터 수신된 신호를 다중화하여 대국 광전송장치로 출력하고, 상기 대국 광전송장치로부터 수신되는 신호를 역다중화하여 SDLC송수신부(34)로 출력하는 MUX/DEMUX(36)로 구성되어 있다.2 is a detailed block diagram of the protocol switching device 12, 22 of FIG. 1, which includes an HDLC transmission / reception unit 32 for transmitting and receiving HDLC format data, an SDLC transmission / reception unit 34 for transmitting and receiving SDLC format data, and Converts the HDLC format data received from the HDLC transmitter / receiver 32 into SDLC format data and outputs the data to the SDLC transmitter / receiver 34, converts the SDLC format data received from the SDLC transmitter / receiver 34 into HDLC format data An MPU 30 outputted to the HDLC transmitter / receiver 32, a voice channel unit 38 for generating a voice channel control signal, a signal received from the voice channel unit 38, and the SDLC transceiver 34 And MUX / DEMUX 36 for multiplexing the signal received from the power output device to the power transmission device, and demultiplexing the signal received from the power transmission device to the SDLC transmission / reception unit 34.
제3도는 본 발명에 따른 프로토콜 변환 제어흐름도로서, HDLC 데이타가 수신될 시 HDLC데이타 포맷을 SDLC데이타 포맷으로 변환하여 전송하는 과정과, 상기 SDLC데이타가 수신될 시 상기 SDLC데이타 포맷을 HDLC데이타 포맷으로 변환하여 전송하는 과정으로 이루어진다.3 is a protocol conversion control flow diagram according to the present invention, the process of converting the HDLC data format to SDLC data format when HDLC data is received, and when the SDLC data is received, the SDLC data format to HDLC data format The process consists of converting and transmitting.
제4도는 본 발명에 따른 HDLC 인터럽트 처리 제어 흐름도로서, HDLC수신 인터럽트가 발생될 시 HDLC데이타를 메모리에 저장하도록 한다.4 is an HDLC interrupt processing control flowchart according to the present invention, and when HDLC reception interrupt is generated, HDLC data is stored in a memory.
제5도는 본 발명에 따른 SDLC 인터럽트 처리 제어 흐름도로서, SDLC수신 인터럽트가 발생될 시 SDLC데이타를 메모리에 저장하도록 한다.5 is a flowchart of a control of SDLC interrupt processing according to the present invention, in which SDLC data is stored in a memory when an SDLC reception interrupt is generated.
상술한 제1도 내지 제5도를 참조하여 본 발명의 바람직한 일 실시예의 동작을 상세히 설명한다.The operation of the preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 5 described above.
제1도의 감시제어장치(11,21)는 HDLC프로토콜 데이타를 전송하면 제2도의 HDLC송수신부(32)로 인가된다. 이때 HDLC송수신부(32)는 특정채널을 통해 데이타가 수신되었음을 알리기 위해 인터럽트를 발생시켜 MPU(30)로 인가한다. 그러면 MPU(30)는 제4도의 301단계에서 인터럽트가 발생되었는가 검사한다. 이때 인터럽트가 발생되었으면 302단계로 진행하여 유효한 데이타가 있을 경우 특정 수신 채널에 해당하는 메모리의 영역에 HDLC데이타를 저장하고 상태를 표시한다. 그리고 제3도의 101단계에서 MPU(30)는 HDLC데이타가 수신되었는가 판단하여 HDLC데이타가 수신되었으면 102단계로 진행한다. 상기 102단계에서 MPU(30)는 HDLC데이타 포맷을 SDLC데이타 포맷으로 변환하고 103단계로 진행한다. 상기 103단계에서 MPU(30)는 상기 변환한 SDLC데이타를 SDLC송수신부(34)의 해당 채널을 통해 MUX/DEMUX(36)로 인가한다. 이때 MUX/DEMUX(36)는 음성채널부(38)로부터 발생되는 음성신호와 상기 SDLC데이타를 다중화하여 96Kb/s 데이타를 다른 교환국의 광전송장치로 전송한다.The monitoring control apparatuses 11 and 21 of FIG. 1 are applied to the HDLC transmitting and receiving unit 32 of FIG. 2 when HDLC protocol data is transmitted. At this time, the HDLC transmitting and receiving unit 32 generates an interrupt to inform the MPU 30 that the data has been received through a specific channel. The MPU 30 then checks whether an interrupt has occurred in step 301 of FIG. In this case, if an interrupt is generated, the process proceeds to step 302, and if there is valid data, the HDLC data is stored in the memory area corresponding to the specific reception channel and the status is displayed. In step 101 of FIG. 3, the MPU 30 determines whether HDLC data has been received, and proceeds to step 102 if HDLC data is received. In step 102, the MPU 30 converts the HDLC data format into the SDLC data format and proceeds to step 103. In step 103, the MPU 30 applies the converted SDLC data to the MUX / DEMUX 36 through a corresponding channel of the SDLC transmitter / receiver 34. At this time, the MUX / DEMUX 36 multiplexes the voice signal generated from the voice channel unit 38 and the SDLC data and transmits 96 Kb / s data to the optical transmission device of another switching center.
그러나 대국으로부터 96Kb/s의 SDLC데이타가 수신되면 MUX/DEMUX(36)는 역다중화하여 감시제어에 해당하는 신호를 추출한 후 SDLC송수신부(34)로 인가한다. 그러면 SDLC송수신부(34)는 해당 채널을 통해 입력되는 8Kb/s 데이타를 특정채널을 통해 데이타가 수신되었음을 알리기 위해 인터럽트를 발생시켜 MPU(30)로 인가한다. 그러면 MPU(30)는 제5도의 401단계에서 인터럽트가 발생되었는가 검사한다. 이때 인터럽트가 발생되었으면 402단계로 진행하여 유효한 데이타가 있을 경우 특정 수신 채널에 해당하는 메모리의 영역에 SDLC데이타를 저장하고 상태를 표시한다. 그리고 제3도의 104단계에서 MPU(30)는 SDLC데이타가 수신되었는가 판단하여 SDLC데이타가 수신되었으면 105단계로 진행한다. 상기 102단계에서 MPU(30)는 SDLC데이타 포맷을 HDLC데이타 포맷으로 변환하고 106단계로 진행한다. 상기 106단계에서 MPU(30)는 상기 변환한 HDLC데이타를 HDLC송수신부(32)의 해당 채널을 통해 제1도의 감시제어장치(11,21)로 전송한다.However, when 96 Kb / s SDLC data is received from the power station, the MUX / DEMUX 36 demultiplexes and extracts a signal corresponding to the supervisory control and applies it to the SDLC transmitting and receiving unit 34. Then, the SDLC transmitter / receiver 34 generates 8Kb / s data input through the corresponding channel and generates an interrupt to inform the MPU 30 that the data has been received through the specific channel. The MPU 30 then checks whether an interrupt has occurred in step 401 of FIG. In this case, if an interrupt is generated, the process proceeds to step 402 and, if there is valid data, the SDLC data is stored in the memory area corresponding to the specific reception channel and the status is displayed. In step 104 of FIG. 3, the MPU 30 determines whether the SDLC data has been received, and proceeds to step 105 when the SDLC data is received. In step 102, the MPU 30 converts the SDLC data format into an HDLC data format and proceeds to step 106. In step 106, the MPU 30 transmits the converted HDLC data to the supervisory control apparatuses 11 and 21 of FIG. 1 through the corresponding channel of the HDLC transmitter / receiver 32.
예를들어 제1도의 A교환국(10)의 감시제어장치(11)에서 19.2Kb/s 혹은 9.6Kb/s HDLC프로토콜 데이타를 제2도의 HDLC송수신부(32)로 인가하면 HDLC송수신부(32)에서는 해당 채널을 통해 MPU(30)로 인가하여 인터럽트를 발생한다. 그러면 MPU(30)에서는 상기 HDLC송수신부(32)로부터 수신된 HDLC프로토콜 데이타를 SDLC데이타 포맷으로 변환하여 SDLC송수신부(34)로 출력한다. 상기 SDLC송수신부(34)에서는 상기 포맷 변환된 SDLC데이타를 해당 채널을 통해 8Kb/s 데이타로 출력하여 MUX/DEMUX(36)로 인가한다. MUX/DEMUX부(36)는 음성채널부(38)로부터 발생되는 음성신호와 상기 SDLC데이타를 다중화하여 96Kb/s 데이타를 송신부(13)를 통해 B교환국(20)의 광전송장치로 전송한다. 이때 B교환국(20) 광전송장치(25)의 수신부(23)를 통해 MUX/DEMUX(36)로 SDLC데이타가 수신되면 MUX/DEMUX(36)를 역다중화하여 감시제어에 해당하는 신호를 추출한 후 SDLC송수신부(34)로 인가한다. 그러면 SDLC송수신부(34)는 해당 채널을 통해 입력되는 8Kb/s 데이타를 특정채널을 통해 데이타가 수신되었음을 알리기 위해 인터럽트를 발생시켜 MPU(30)로 인가한다. 이때 MPU(30)는 SDLC데이타 포맷을 HDLC데이타 포맷으로 변환하여 HDLC송수신부(32)로 출력한다. 상기 HDLC송수신부(32)는 해당 채널을 통해 상기 MPU(30)로부터 포맷 변환된 HDLC데이타를 감시제어장치(21)로 전송한다.For example, when the monitoring control device 11 of the A switching center 10 of FIG. 1 applies 19.2 Kb / s or 9.6 Kb / s HDLC protocol data to the HDLC transmitting / receiving unit 32 of FIG. 2, the HDLC transmitting / receiving unit 32 In this case, an interrupt is generated by applying to the MPU 30 through the corresponding channel. The MPU 30 then converts the HDLC protocol data received from the HDLC transmitter / receiver 32 into an SDLC data format and outputs it to the SDLC transmitter / receiver 34. The SDLC transmitter / receiver 34 outputs the format-converted SDLC data as 8Kb / s data through the corresponding channel and applies the data to the MUX / DEMUX 36. The MUX / DEMUX unit 36 multiplexes the voice signal generated from the voice channel unit 38 and the SDLC data and transmits 96 Kb / s data through the transmitter 13 to the optical transmission device of the B switching station 20. At this time, when the SDLC data is received by the MUX / DEMUX 36 through the receiving unit 23 of the B switch 20, the optical transmission device 25, the MUX / DEMUX 36 is demultiplexed to extract a signal corresponding to supervisory control, and then SDLC. It is applied to the transceiver 34. Then, the SDLC transmitter / receiver 34 generates 8Kb / s data input through the corresponding channel and generates an interrupt to inform the MPU 30 that the data has been received through the specific channel. At this time, the MPU 30 converts the SDLC data format into the HDLC data format and outputs it to the HDLC transmitter / receiver 32. The HDLC transmitting / receiving unit 32 transmits HDLC data, which have been format-converted from the MPU 30, to the monitoring and controlling device 21 through the corresponding channel.
상술한 바와 같이 본 발명은 비동기 전송시스템에서 각 교환국의 감시제어장치간에 서로 통신이 원활하게 이루어지도록 HDLC/SDLC 프로토콜을 상호 전환하므로, 교환국간의 감시제어장치간에 통신을 가능하도록 할 수 있으며, 또한 A교환국의 감시제어장치 및 프로토콜 전환장치와 B교환국의 감시제어장치 및 프로토콜 전환장치에서 사용하는 전송속도 차이를 보상하여 속도차에 의한 교환국의 감시제어장치간의 통신문제를 해결할 수 있는 이점이 있다.As described above, the present invention switches between the HDLC / SDLC protocols so that communication between the monitoring and control devices of the switching stations can be smoothly communicated with each other in the asynchronous transmission system, thereby enabling communication between the monitoring and control devices between the switching stations. Compensation for the transmission speed difference used in the monitoring control device and the protocol switching device of the switching center and the monitoring control device and the protocol switching device of the switching center B has the advantage of solving the communication problem between the monitoring control devices of the switching station due to the speed difference.
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| KR100404822B1 (en) * | 2001-06-29 | 2003-11-14 | 중앙아이엔티 주식회사 | Apparatus for testing running status of scada system and method therefor |
| KR102512957B1 (en) | 2022-06-08 | 2023-03-23 | 주식회사 비에스테크닉스 | Assemply-type Block With LED Module And Manufacturing Method Of The Same |
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| KR100551158B1 (en) * | 1998-12-31 | 2006-05-25 | 유티스타콤코리아 유한회사 | HDLC communication device in base station of mobile communication system and communication method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100404822B1 (en) * | 2001-06-29 | 2003-11-14 | 중앙아이엔티 주식회사 | Apparatus for testing running status of scada system and method therefor |
| KR102512957B1 (en) | 2022-06-08 | 2023-03-23 | 주식회사 비에스테크닉스 | Assemply-type Block With LED Module And Manufacturing Method Of The Same |
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