KR980007196A - Asynchronous Transmission Mode Host Connection Device Sending and Receiving Data by Channel Numbering - Google Patents

Asynchronous Transmission Mode Host Connection Device Sending and Receiving Data by Channel Numbering Download PDF

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Publication number
KR980007196A
KR980007196A KR1019960022445A KR19960022445A KR980007196A KR 980007196 A KR980007196 A KR 980007196A KR 1019960022445 A KR1019960022445 A KR 1019960022445A KR 19960022445 A KR19960022445 A KR 19960022445A KR 980007196 A KR980007196 A KR 980007196A
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KR
South Korea
Prior art keywords
descriptor
transmission
data
host
information
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KR1019960022445A
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Korean (ko)
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KR100204050B1 (en
Inventor
남기동
황영원
채종억
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양승택
한국전자통신연구원
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Priority to KR1019960022445A priority Critical patent/KR100204050B1/en
Publication of KR980007196A publication Critical patent/KR980007196A/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/90—Buffering arrangements
    • H04L49/9057—Arrangements for supporting packet reassembly or resequencing
    • 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
    • H04L2012/5678—Traffic aspects, e.g. arbitration, load balancing, smoothing, buffer management

Abstract

본 발명은 호스트의 외부장치 접속용 호스트 버스에 장착되어 비동기 전달모드(ATM: Asynchoronus Transfer Mode) 프로토콜을 사용하는 망에 연결시키는 고성능 ATM 호스트 접속장치에 있어서, 호스트의 상위 프로토콜에서 ATM 프로토콜에 관계없이 데이타를 전달하기 위해 채널 번호를 부여하여 사용자 데이타를 고속으로 전달하기 위한 송/수신 방법에 관한 것이다. 본 발명은 ATM 호스트 접속장치와 상기 프로토콜 사이에서 ATM 정보의 하드웨어 연결 설정 정보와 채널번호를 1:1로 연관시켜 채널정보를 구성하는 제1단계, 고속의 데이타 송신을 위해 고정 분할된 송수신 패킷메모리와 디스크립터를 1:1로 연관시키는 제2단계, 데이터 송신 요구가 발생하면, 디스크립터를 할당하고 CPCS-PDU를 생성하고, 디스크립터 엔트리에 해당정보를 채우고 송신 디스크립터 큐에 디스크립터를 삽입하므로 송신하는 제3단계, 및 데이터 정보 및 CPCS-PDU를 추출하고 호스트 송신 대기 디스크립터 링크드 리스트에 삽입하므로 수신하는 제4단계로 이루어진다.The present invention is a high performance ATM host access device which is attached to a host bus for connecting an external device of a host to a network using an Asynchoronus Transfer Mode (ATM) protocol, regardless of the ATM protocol in the host's upper protocol. The present invention relates to a transmission / reception method for delivering user data at high speed by assigning a channel number for delivering data. The present invention provides a first step of configuring channel information by associating hardware connection configuration information of an ATM information with a channel number between an ATM host access device and the protocol in a 1: 1 manner, and the fixed divided transmission / reception packet memory for high speed data transmission. And the second step of associating the descriptor with a 1: 1, when a data transmission request occurs, assigns a descriptor, generates a CPCS-PDU, fills corresponding information in the descriptor entry, and inserts the descriptor in the transmission descriptor queue, thereby transmitting And a fourth step of receiving data information and CPCS-PDUs and inserting them into the host send queue descriptor linked list to receive them.

Description

비동기 전달 모드 호스트 접속 장치에서 채널 번호 부여를 통한 데이터 송수신 방법Asynchronous Transmission Mode Host Connection Device Sending and Receiving Data by Channel Numbering

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

제4도는 본 발명에 따른 데이타 수신 처리 구성도.4 is a block diagram of a data receiving process according to the present invention.

제5도는 본 발명에 따른 송신 과정 흐름도.5 is a flowchart of a transmission process according to the present invention.

제6도는 본 발명에 따른 수신 과정 흐름도.6 is a flowchart of a receiving process according to the present invention.

Claims (5)

ATM 호스트 접속장치와 상위 프로토콜 사이에서 ATM 정보의 하드웨어 연결 설정 정보와 채널번호를 1:1로 연관시켜 채널정보를 구성하는 제1단계; 고속의 데이타 송신을 위해 고정 분할된 송수신 패킷 메모리와 디스크립터를 1:1로 연관시키는 제2단계; 데이터 송신 요구가 발생하면, 디스크립터를 할당하고 CPCS-PDU를 생성하고, 디스크립터 엔트리에 해당 정보를 채우고 송신 디스크립터 큐에 디스크립터를 삽입하므로 송신하는 제3단계; 및 데이터가 수신되면 수신완료 디스크립터 큐에서 디스크립터를 추출하고 데이터 정보 및 CPCS-PDU를 추출하고 호스트 송신 대기 디스크립터 링크드 리스트에 삽입하므로 수신하는 제4단계를 포함하여 이루어지는 것을 특징으로 하는 데이터 송수신 방법.A first step of configuring channel information by associating hardware connection setting information of ATM information with a channel number between an ATM host access device and an upper protocol in a 1: 1 manner; A second step of associating a descriptor with a fixed split transmission / reception packet memory for a high speed data transmission in a 1: 1 manner; A third step of, if a data transmission request occurs, assigning a descriptor, generating a CPCS-PDU, filling the corresponding information in the descriptor entry, and inserting the descriptor in the transmission descriptor queue; And a fourth step of extracting a descriptor from a reception complete descriptor queue, extracting data information and CPCS-PDU, and inserting the data into a host transmission standby descriptor linked list when data is received. 제1항에 있어서, 상기 제3단계는, 미리 송신 패킷메모리를 디스크립터 정보에 부여하여 송신 요구시에는 해제 상태인 디스크립터 번호(Descriptor number)만을 할당함으로 송신 처리 부담을 줄이도록 하는 것을 특징으로 하는 데이터 송수신 방법.3. The data processing method according to claim 1, wherein the third step further reduces the burden of transmission processing by assigning a transmission packet memory to descriptor information in advance so as to allocate only a descriptor number that is in a released state when a transmission request is made. How to send and receive. 제2항에 있어서, 상기 제4단계는, 데이터 수신을 위한 수신 패킷 메모리 할당 및 이와 연관된 디스크립터를 모두 수신대기큐에 삽입하여 수신 부담을 줄이도록 하는 것을 특징으로 하는 데이터 송수신 방법.3. The method of claim 2, wherein the fourth step includes allocating a received packet memory allocation for data reception and a descriptor associated with the received queue to reduce a reception burden. 제3항에 있어서, 상기 제3단계는, 송신 완료된 디스크립터를 다음 송신 요구시 이용하기 위해 송신완료 디스크립터 큐에서 추출하고, 이를 송신 프리디스크립터 링크드-리스트에 삽입하는 단계를 더 포함하여 이루어지는 것을 특징으로 하는 데이터 송수신 방법.4. The method of claim 3, wherein the third step further comprises extracting the completed descriptor from the transmission complete descriptor queue for use in a next transmission request and inserting it into the transmission predescriptor linked-list. How to send and receive data. 제4항에 있어서, 상기 제4단계는, 호스트 송신대기 디스크립터 링크드-리스트(400)에 의해 호스트로 데이타 송신이 완료되면 송신 완료된 디스크립터를 호스트 송신대기 디스크립터 링크드-리스트에서 제거하고 다음 데이타의 수신을 위해 수신대기 디스크립터 큐에 다시 삽입하는 단계를 더 포함하여 이루어지는 것을 특징으로 하는 데이터 송수신 방법.5. The method of claim 4, wherein, in the fourth step, when data transmission to the host is completed by the host transmit standby descriptor linked-list 400, the transmitted descriptor is removed from the host transmit standby descriptor linked-list and reception of the next data is received. And inserting the data back into the reception standby descriptor queue.
KR1019960022445A 1996-06-19 1996-06-19 Data transmission method by allocating the channel number allocating in atm host connection device KR100204050B1 (en)

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KR1019960022445A KR100204050B1 (en) 1996-06-19 1996-06-19 Data transmission method by allocating the channel number allocating in atm host connection device

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KR1019960022445A KR100204050B1 (en) 1996-06-19 1996-06-19 Data transmission method by allocating the channel number allocating in atm host connection device

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KR100204050B1 KR100204050B1 (en) 1999-06-15

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