동기식 광전송장비를 이용한 환형망 구성에 관한 연구 = (The) Study on Ring Network Configuration Using the Optical Synchronous Transmission Equipment

다국어 초록 (Multilingual Abstract)

Todays, the technology development in the field of the fiber optics has already been applied to the domestic backbone transmission lines, and it has already been put to used. The single mode system of the fiber optic which can handle the data rate more than 500 Mbps has been distributed extengively. According to this trend, the design and implementation of the backbone network using this technique is being carried out actively. The goals of the communication networks in the future are in satisfying the service requirements which are getting more diversified and personalized. To reach these goals, the transmission networks should be highly reliable. In other words, the networks should beconfigured protectively. That is, the transmission networks should be implemented to cover the service degradation, interruption in case of the failures of the equipments, the unforseen disasters, or the heavy traffics. In this point of view, this paper is simply to review and analyze the synchronous transmission technique which is now emerging in this area. The purpose of this paper, therefore, is to present the most suitable way to improve the service for customers, the network reliability for service providers in the point of the network design, implementation and maintenance costs to be reduced in constructing the longhaul backbone network.

목차 (Table of Contents)

• 목차 = ⅲ
• [ABSTRACT] = ⅰ
• 제1장 서론 = 1
• 제2장 동기식 다중전송기술 = 3
• 2-1. 비동기식 다중화(Asynchronous Multiplexing) 원리 = 3
• 2-2. 동기식 다중화(Synchronous Multiplexing) 원리 = 4
• 2-3. 기본 프레임 구조 = 5
• 2-4. 국제 표준화 현황(SONET 및 CCITT의 동기식 NNI) = 7
• 제3장 동기식 광전송망의 오버헤드 및 APS 프로토콜 = 9
• 3-1. 오버혜드(Overhead)의 계층(Layer) = 9
• 3-2. 자동 보호절체 프로토콜(Automatic Protection Switching Protocol) = 11
• 3-2-1. 자동 보호절체(Automatic Protection Switching,APS) 바이트 정의 = 11
• 제4장 트래픽 보호를 위한 망구성 = 14
• 4-1. 자동보호절체와 이중 중심국 방식 = 15
• 4-1-1. 1:N APS 구조 = 16
• 4-1-2. 1:N APS 경로 이원화 구조(1:N/DP) = 18
• 4-2. 이중 중심국(Dual-Homing) = 19
• 4-3. 자체 복구 환형망(Self Healing Ring, SHR) = 21
• 4-3-1. 4파이버(core) 양방향 선로절체(BLS/4) SHR = 21
• 4-3-2. 2파이버(core) 양방향 선로절체(BLS/2) SHR = 23
• 4-3-3. 단방향 선로절체(Unidirectional Line Switched) SHR = 24
• 4-3-4. 단방향 경로절체(Unidirectional Path Switched, UPS) SHR = 25
• 제5장 환형망 구성 방식별 제안 및 고찰 = 26
• 5-1. 집중형(Centralized)망 형태 = 27
• 5-2. 그물형(Mesh)망 형태 = 30
• 5-3. 순환형(Cyclic)망 형태 = 33
• 제6장 결론 = 36
• 참고문헌 = 37