KR950022438A - Asynchronous transfer mode physical layer transmission processing apparatus and method - Google Patents

Asynchronous transfer mode physical layer transmission processing apparatus and method Download PDF

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Publication number
KR950022438A
KR950022438A KR1019930028936A KR930028936A KR950022438A KR 950022438 A KR950022438 A KR 950022438A KR 1019930028936 A KR1019930028936 A KR 1019930028936A KR 930028936 A KR930028936 A KR 930028936A KR 950022438 A KR950022438 A KR 950022438A
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KR
South Korea
Prior art keywords
storage means
information
multiplexing
cell information
cell
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Application number
KR1019930028936A
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Korean (ko)
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KR960008681B1 (en
Inventor
정성호
김기천
김장경
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양승택
재단법인 한국전자통신연구소
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Priority to KR93028936A priority Critical patent/KR960008681B1/en
Publication of KR950022438A publication Critical patent/KR950022438A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5638—Services, e.g. multimedia, GOS, QOS
    • H04L2012/5646—Cell characteristics, e.g. loss, delay, jitter, sequence integrity
    • H04L2012/5652—Cell construction, e.g. including header, packetisation, depacketisation, assembly, reassembly
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5638—Services, e.g. multimedia, GOS, QOS
    • H04L2012/5663—Support of N-ISDN
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5672—Multiplexing, e.g. coding, scrambling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5678—Traffic aspects, e.g. arbitration, load balancing, smoothing, buffer management
    • H04L2012/5684—Characteristics of traffic flows

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

본 발명은 종합정보통신망인 B-SIDN에 접속하기 위한 ATM 근거리망에 사용되는 호스트 인터페이스 접속장치의 구성요소인 비동기전달방식 물리계층 송신처리장치 및 방법에 관한 것으로, ATM 포럼 규격에 맞는 ATM 물리계층의 전송기능을 고속으로 지원하여 100Mbps 이상의 전송속도에서 동작이 가능하며, 셀 정보를 저장하는 각 저장수단을 효율적으로 관리하는 제어수단을 제공하고, 2개의 메모리뱅크를 통하여 데이타의 송수신을 효율적으로 제어하여 데이타의 넘침(overflow) 방지가 가능하게 동시에 2개의 동작수행이 가능하며, 적은 크기의 메모리뱅크를 사용하여 공간을 절약할 수 있고, 접속장치내의 주처리장치(i960CA)가 효율적으로 데이타를 처리하도록 32비트의 워드 단위로 데이타의 처리가 가능한 효과가 있다.The present invention relates to an asynchronous transmission physical layer transmission processing apparatus and method that is a component of a host interface connection device used in an ATM local area network for accessing a B-SIDN which is a comprehensive information communication network. It supports the transmission function of the high speed and can operate at the transmission speed of 100Mbps or more, and provides the control means to efficiently manage each storage means for storing the cell information, and efficiently control the transmission and reception of data through the two memory banks Data can be prevented from overflowing at the same time, and two operations can be performed at the same time. A small memory bank can be used to save space, and the main processing unit (i960CA) in the connection device efficiently processes the data. The data can be processed in 32-bit word units.

Description

비동기 전달모드 물리계층 송신처리장치 및 방법Asynchronous transfer mode physical layer transmission processing apparatus and method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 따른 하드웨어의 개략적인 블럭구성도.1 is a schematic block diagram of hardware according to the present invention.

제2도는 제1도의 세부구성도.2 is a detailed configuration of FIG.

제3도는 본 발명에 따른 송신처리 방법에 대한 처리흐름도.3 is a flowchart illustrating a transmission processing method according to the present invention.

제4도는 본 발명의 동작을 설명하기 위한 타이밍도.4 is a timing diagram for explaining the operation of the present invention.

Claims (2)

호스트 시스템쪽에서 처리된 정보가 통신망 저속장치로 수송되면, 접속처리장치내의 주처리장치(i960CA)에 의해 처리된 후 이를 저장하기 위한 저장수단(1); 상기 저장수단(1)으로부터 바이트단위로 읽어들이기 위한 제1임시저장수단(2); 상기 제2임시저장수단(2)으로부터 하나의 셀 정보를 저장하기 위한 셀 정보 저장수단(3); 상기 셀 정보 저장수단(3)으로 셀 정보를 다중화하기 위한 다중화 수단(4); 상기 다중화 수단(4)을 통과한 셀 정보에 헤더오류제어 정보를 생성하는 CRC 생성수단(5); 상기 CRC 생성수단(5)에 연결되어 셀 정보와 HEC를 이용하여 ATM 셀을 형성하기 위한 다중화 수단(6); 상기 다중화 수단(6)으로부터 생성된 ATM 셀을 바이트단위로 임시로 저장하기 위한 제2임시저장수단(7); 상기 다중화 수단(6)을 통과한 ATM 셀을 통신망으로 전송하기 위한 인코딩수단(10); 상기 인코딩수단(10)을 통해 인코딩된 정보를 광신호로 변환하는 변환수단(11); 상기 시스템 전체를 제어하는 송신 제어수단(8); 상기 송신제어수단(8)에 사용되는 정보를 임시로 저장하는 제3임시저장수단(9); 을 구비하는 것을 특징으로 하는 비동기전달모드 물리계층 송신처리장치.Storage information (1) for processing and storing the processed information on the host system side by the main processing unit (i960CA) in the connection processing apparatus and storing it; First temporary storage means (2) for reading in bytes from said storage means (1); Cell information storage means (3) for storing one cell information from said second temporary storage means (2); Multiplexing means (4) for multiplexing cell information with said cell information storing means (3); CRC generating means (5) for generating header error control information in the cell information passed through the multiplexing means (4); Multiplexing means (6) connected to said CRC generating means (5) for forming an ATM cell using cell information and HEC; Second temporary storage means (7) for temporarily storing the ATM cells generated from the multiplexing means (6) in units of bytes; Encoding means (10) for transmitting the ATM cell passing through the multiplexing means (6) to a communication network; Conversion means (11) for converting the information encoded by the encoding means (10) into an optical signal; Transmission control means (8) for controlling the entire system; Third temporary storage means (9) for temporarily storing information used in the transmission control means (8); Asynchronous transmission mode physical layer transmission processing apparatus comprising: a. 저장수단(1), 제1임시저장수단(2), 셀 정보 저장수단(3), 다중화 수단(4), CRC 생성수단(5), 다중화 수단(6), 제2임시저장수단(7), 인코딩수단(10), 변환수단(11), 송신제어수단(8), 제3임시저장수단(9)을 구비하는 비동기전달모드 물리계층 송신처리장치에 적용되는 송신처리방법에 있어서, 저장된 정보는 주처리장치에 의해 ATM 적층계층(AAL) 기능을 수행한 후 저장수단(1)내의 FIFO의 상태를 점검하는 제1단계; 상기 제1단계 수행 후, FIFO에 저장된 셀 정보는 ATM 셀로 규격화하기 위해 잠시 셀 정보 저장수단(3)에 저장된 후 헤더오류 제어를 위한 HEC(Header Error Control)이 첨가되어, ATM 셀로 규격화되는 제2단계; 상기 제2단계 수행 후, 규격화된 ATM 셀은 바이트단위로 인코딩되어 광신호로 변환된 후 망으로 전송하고 종료하는 제3단계; 를 포함하여 이루어지는 것을 특징으로 하는 비동기전달모드 물리계층 송신처리방법.Storage means (1), first temporary storage means (2), cell information storage means (3), multiplexing means (4), CRC generating means (5), multiplexing means (6), second temporary storage means (7) A transmission processing method applied to an asynchronous transmission mode physical layer transmission processing apparatus having an encoding means (10), a conversion means (11), a transmission control means (8), and a third temporary storage means (9). The first step of checking the state of the FIFO in the storage means 1 after performing the ATM stacking layer (AAL) function by the main processing unit; After performing the first step, the cell information stored in the FIFO is temporarily stored in the cell information storage means 3 to normalize to an ATM cell, and then a HEC (Header Error Control) for header error control is added to normalize the ATM cell. step; After performing the second step, the normalized ATM cell is encoded in units of bytes, converted into optical signals, and then transmitted to the network and terminated; Asynchronous transmission mode physical layer transmission processing method comprising a. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR93028936A 1993-12-21 1993-12-21 Transmission processing apparatus and its method in the atm physical layer KR960008681B1 (en)

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KR93028936A KR960008681B1 (en) 1993-12-21 1993-12-21 Transmission processing apparatus and its method in the atm physical layer

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KR950022438A true KR950022438A (en) 1995-07-28
KR960008681B1 KR960008681B1 (en) 1996-06-28

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