KR970056293A

KR970056293A - Primitive Handling in LAPD for ISDN User-Network Connections

Info

Publication number: KR970056293A
Application number: KR1019950052746A
Authority: KR
Inventors: 정용길; 이종대
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1995-12-20
Filing date: 1995-12-20
Publication date: 1997-07-31

Abstract

본 발명은 ISDN 사용자-망 접속의 LAPD에서 프리미티브 처리방법에 관한 것으로, 관리계층으로부터 MDL_REMOVE_REQ 프리미티브를 수신하는 단계(201); 상기 수신된 프리미티브의 링크 엔티티를 식별하는 단계(202); 해당 링크 엔티티의 현재 상태를 판별하는 단계(203); 상태 판별결과 상태 4이면 UI-큐의 데이타를 제거하고, 현재 상태를 상태 1로 천이시키는 단계(211,212); 상태 판별결과 상태 5, 혹은 6,7,8이면, I-큐와 UI-큐의 데이타를 제거하고, 현재 상태가 해제대기 상태이면 DL_RELEASE_CFM 프리미티브를 상위계층으로 전송하고, 현재 상태가 설정대기 혹은 다중 프레임 설정 혹은 타이머 복원상태이면 DL_RELEASE_IND 프리미티브를 상위계층으로 전송하는 단계(221,222,223,224); 및 T200 타이머와 T203 타이머를 정지시키고, 현재 상태를 상태 I로 천이시키는 단계(225,226,227)를 포함하여 처리 절차를 단순화하여 처리시간을 단축할 수 있는 효과가 있다.The present invention relates to a primitive processing method in LAPD of an ISDN user-network connection, comprising: receiving an MDL_REMOVE_REQ primitive from a management layer (201); Identifying (202) a link entity of the received primitive; Determining (203) a current state of the link entity; If the state discrimination result is state 4, removing data of the UI-queue and transitioning the current state to state 1 (211, 212); If the status determination result is status 5, or 6, 7, or 8, the data of the I-queue and UI-queue is removed, and if the current status is the release waiting status, the DL_RELEASE_CFM primitive is sent to the upper layer, and the current status is set waiting or multiple Transmitting a DL_RELEASE_IND primitive to a higher layer in a frame setting or timer recovery state (221, 222, 223, 224); And stopping the T200 timer and the T203 timer and transitioning the current state to the state I (225, 226, 227), thereby reducing the processing time by simplifying the processing procedure.

Description

Primitive Handling in LAPD for ISDN User-Network Connections

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

제6도는 본 발명에 따라 LAPD를 구현하는 하드웨어의 예를 도시한 도면.6 illustrates an example of hardware for implementing LAPD in accordance with the present invention.

제8도는 본 발명에 적용되는 계층2에서의 환경변수 테이블을 도시한 도면.8 is a diagram showing an environment variable table in Layer 2 applied to the present invention.

제10도는 본 발명에 따른 프리미티브 처리절차를 도시한 SDL 도면이다.10 is an SDL diagram illustrating a primitive processing procedure according to the present invention.

Claims

CLAIMS 1. A method for implementing LAPD to connect an ISDN terminal to a network according to a layered protocol in a general information communication network, the method comprising: receiving (201) an MDL_REMOVE_REQ primitive from a management layer; Identifying (202) a link entity of the received primitive; Determining (203) a current state of the link entity; If the state is determined as state 4, removing data of the UI-queue and transitioning the current state to state I (211, 212); If the status determination result is status 5, or 6, 7, 8, the data of I-queue and UI-queue is removed, and if the current status is in the release waiting status, DL_RELEASE_CFM primitive is sent to the upper layer, and the current status is set waiting or multiple Transmitting a DL_RELEASE_IND primitive to a higher layer in a frame setting or timer recovery state (221, 222, 223, 224); And stopping (225, 226, 227) the T200 timer and the T203 timer and transitioning the current state to State 1. The primitive processing method in LAPD of an ISDN user-network connection.

※ Note: The disclosure is based on the initial application.