KR960020169A - AAL 3/4 receiver - Google Patents

AAL 3/4 receiver Download PDF

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Publication number
KR960020169A
KR960020169A KR1019940031341A KR19940031341A KR960020169A KR 960020169 A KR960020169 A KR 960020169A KR 1019940031341 A KR1019940031341 A KR 1019940031341A KR 19940031341 A KR19940031341 A KR 19940031341A KR 960020169 A KR960020169 A KR 960020169A
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KR
South Korea
Prior art keywords
header
trailer
cpcs
sar
processing unit
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KR1019940031341A
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Korean (ko)
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KR0123223B1 (en
Inventor
윤성욱
Original Assignee
배순훈
대우전자 주식회사
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Priority to KR1019940031341A priority Critical patent/KR0123223B1/en
Publication of KR960020169A publication Critical patent/KR960020169A/en
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Publication of KR0123223B1 publication Critical patent/KR0123223B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/43—Assembling or disassembling of packets, e.g. segmentation and reassembly [SAR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0823—Errors, e.g. transmission errors
    • 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
    • H04L2012/5653—Cell construction, e.g. including header, packetisation, depacketisation, assembly, reassembly using the ATM adaptation layer [AAL]
    • H04L2012/5657—Cell construction, e.g. including header, packetisation, depacketisation, assembly, reassembly using the ATM adaptation layer [AAL] using the AAL3/4

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

Abstract

본 발명은 ATM통신방식의 AAL 3/4수신처리장치에 관한 것으로, 스타트(start)신호에 따라 모듈로 48카운트하여 FIFO 제어신호, CRC인에이블신호, SAR 헤더선택신호, SAR 트레일러선택신호, CPCS 헤더선택신호, CPCS트레일러선택신호, 완료신호를 발생하는 카운터 및 제어신호발생부(10); 와 상기 완료신호와 세그먼트타입 데이타와 같이 데이타를 입력하여 수신된 메세지의 길이를 계산하는 길이연산부(20); FIFO리드회로(30) ; CRC처리부(40) ; SAR헤더처리부(50) ; SAR 트레일러처리부(60) ; CPCS헤더처리부(70) ; CPCS 트레일러처리부(80); 상기 카운터 및 제어부의 FIFO제어신호에 의해 마지막 세그먼트의 길이를 카운트하는 마지막 세그먼트처리부(90) ; FIFO라이트회로(100) ; 및 에러처리부(110)를 구비하여 AAL 3/4 수신처리기능을 효율적으로 수행한다.The present invention relates to an ATM communication method AAL 3/4 reception processing apparatus, which counts 48 modules into modules according to a start signal, FIFO control signal, CRC enable signal, SAR header selection signal, SAR trailer selection signal, and CPCS. A counter and control signal generator 10 for generating a header selection signal, a CPCS trailer selection signal, and a completion signal; A length calculator 20 for inputting data such as the completion signal and segment type data to calculate a length of a received message; FIFO lead circuit 30; CRC processing unit 40; SAR header processing unit 50; SAR trailer processing unit 60; CPCS header processing unit 70; CPCS trailer processing unit 80; A last segment processor (90) for counting the length of the last segment by the counter and the FIFO control signal of the controller; FIFO light circuit 100; And an error processing unit 110 to efficiently perform the AAL 3/4 reception processing function.

Description

AAL 3/4 수신처리장치AAL 3/4 receiver

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명에 따른 AAL 3/4 수신처리장치를 설명하기 위하여 도시한 것으로서,1 is a diagram illustrating an AAL 3/4 reception processing apparatus according to the present invention.

(가)는 AAL계층의 데이타 흐름 구조를 도시한 도면,(A) is a diagram showing a data flow structure of an AAL layer;

(나)는 SAR-PDU 데이타의 포맷을 도시한 도면,(B) shows the format of the SAR-PDU data;

(다)는 CPCS-PDU 데이타의 포맷을 도시한 도면,(C) shows the format of CPCS-PDU data;

제2도는 본 발명에 따른 AAL 3/4 수신처리장치를 도시한 블럭도.2 is a block diagram showing an AAL 3/4 reception processing apparatus according to the present invention.

Claims (1)

ATM통신방식의 AAL 3/4프로토콜에 따른 수신처리장치에 있어서, 스타트(Start)신호에 따라 모듈로 48카운트하여 FIFO제어신호, CRC인에이블신호. SAR 헤더선택신호, SAR 트레일러선택신호, CPCS 헤더선택신호, CPCS트레일러선택신호, 완료신호를 발생하는 카운터 및 제어신호발생부(10) ;와 상기 완료신호와 세그먼트타입 데이타와 길이 데이타를 입력하여 수신된 메세지의 길이를 계산하는 길이연산부(20) ; 상기 카운터 및 제어부의 FIFO제어신호에 따라 FIFO로 부터 데이타를 리드하는 FIFO리드회로(30); 상기 CRC인에이블신호에 따라 리드된 데이타로부터 CRC에러를 검출하는 CRC처리부(40) ; 상기 SAR헤더선택신호에 따라 리드된 데이타로부터 SAR헤더를 입력하여 헤더에러 발생을 검출하는 SAR헤더처리부(50); 상기 SAR 트레일러선택 신호에 따라 리드된 데이타로부터 SAR트레일러를 입력하여 트레일러 에러 발생을 검출하는 SAR 트레일러처리부(60) ; 상기 CPCS 헤더선택신호에 따라 리드된 데이타로부터 CPCS헤더를 입력하여 헤더에러발생을 검출하는 CPCS헤더처리부(70) ; 상기 CPCS 트레일러선택신호에 따라 리드된 데이타로부터 CPCS트레일러 에러발생을 검출하는 CPCS 트레일러처리부(80) ; 상기 카운터 및 제어부의 FIFO제어신호에 의해 마지막 세그먼트의 길이를 카운트하는 마지막 세그먼트처리부(90) ; 리드된 데이타를 상기 카운터 및 제어부의 출력 또는 상기 마지막 세그먼트처리부의 출력에 따라 FIFO에 라이트하는 FIFO라이트회로(100) 상기 CRC처리부(40), SAR헤더처리부(50), SAR트레일러처리부(60), CPCS헤더처리부(70), CPCS트레일러처리부(80)의 출력을 입력하여 에러발생을 상위계층에 알리는 에러처리부(110)를 구비한 것을 특징으로 하는 AAL 3/4 수신처리장치.A reception processing apparatus according to the AAL 3/4 protocol of the ATM communication system, comprising: 48 counts of modules according to a start signal and a FIFO control signal and a CRC enable signal. A counter and control signal generator 10 for generating a SAR header selection signal, a SAR trailer selection signal, a CPCS header selection signal, a CPCS trailer selection signal, and a completion signal; and receiving the completion signal, segment type data, and length data A length calculation unit 20 for calculating a length of a message which has been received; A FIFO read circuit 30 for reading data from the FIFO according to the FIFO control signal of the counter and the controller; A CRC processing unit 40 for detecting a CRC error from data read according to the CRC enable signal; A SAR header processing unit (50) for detecting occurrence of a header error by inputting a SAR header from data read according to the SAR header selection signal; A SAR trailer processing unit (60) for detecting a trailer error occurrence by inputting a SAR trailer from data read according to the SAR trailer selection signal; A CPCS header processor (70) for detecting a header error by inputting a CPCS header from data read in accordance with the CPCS header selection signal; A CPCS trailer processing unit (80) for detecting occurrence of a CPCS trailer error from data read according to the CPCS trailer selection signal; A last segment processor (90) for counting the length of the last segment by the counter and the FIFO control signal of the controller; A FIFO write circuit 100 for writing the read data to the FIFO according to the output of the counter and the controller or the output of the last segment processor; the CRC processor 40, SAR header processor 50, SAR trailer processor 60, And an error processing unit (110) for inputting the output of the CPCS header processing unit (70) and the CPCS trailer processing unit (80) to inform the upper layer of the occurrence of an error. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940031341A 1994-11-26 1994-11-26 A device for receiving atm cells according to aal type 3/4 protocol KR0123223B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940031341A KR0123223B1 (en) 1994-11-26 1994-11-26 A device for receiving atm cells according to aal type 3/4 protocol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940031341A KR0123223B1 (en) 1994-11-26 1994-11-26 A device for receiving atm cells according to aal type 3/4 protocol

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KR960020169A true KR960020169A (en) 1996-06-17
KR0123223B1 KR0123223B1 (en) 1997-11-20

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KR1019940031341A KR0123223B1 (en) 1994-11-26 1994-11-26 A device for receiving atm cells according to aal type 3/4 protocol

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