内容发布更新时间 : 2024/11/18 23:51:11星期一 下面是文章的全部内容请认真阅读。
摘 要
摘 要
同步数字体系（Synnchronous Digital Hierarchy SDH）是一种新的传输体制，广泛地运用于实用的光纤通信系统中。高度发达的信息社会要求通信网能提供多种多样的电信业务，通过通信网传输、交换、处理的信息量将不断增大，这就要求现代化的通信网向数字化、综合化、智能化和个人化方向发展，随着系统容量的不断提高，电子器件处理信息的速率还远远低于光纤所能提供的巨大负荷量的矛盾就更加显现。为了进一步满足各种宽带业务对网络容量的需求，进一步挖掘光纤的频带资源，充分利用SDH同步复用、标准化的光接口、强大的网管能力、灵活网络拓扑能力和高可靠性，开发和使用新型光纤通信系统将成为未来的趋势。本文以SDH的传输原理为基础，通过中国华为公司所研制的最新一代SDH智能光传输设备—OPTIX OSN为基础，设计了一个以三台设备为基本网元的简单的链型传输网络，通过实验室的运行和测试，可以实现异地之间的通信业务的上传下载传输。
关键字：SDH，网络，光传输，STM-N,组网，复用，光接口
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ABSTRACT
ABSTRACT
Digital synchronous Digital system (Synnchronous Hierarchy SDH) is a kind of new transmission system, is widely used in practical optical fiber communication system. Highly developed the information society for network can provide varied telecommunication business, through the network transmission and exchange, processing of information will continue to increase, this requires modern communications network to the digital, integrated, intelligent and personalization direction, with the continuous improvement of the system capacity, rate of processing information electronic devices are still far lower than fiber can provide the huge contradiction is more load appeared. In order to further meet various broadband business demand for network capacity, further mining fiber band resources, make full use of SDH synchronous multiplexing, standardization of light interface, powerful network management ability, flexible network topology ability and high reliability, the development and use of new fiber communications systems will become the trend of the future. Based on SDH transmission principle as the foundation, which is developed by China huawei company of the latest generation of SDH intelligent optical transmission equipment - OPTIX OSN as the foundation, the design a to three equipment for the basic nets yuan simple chain type transmission network, through laboratory operation and test, can realize the communication between the different business uploads and downloads transmission.
Keyword:SDH，network，optical transmission，STM-N，networking，reuse，Light interface
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目 录
目 录
第一章 引言 ........................................................ 1 1.1选题背景 ......................................................... 1 1.2研究目标和意义 ................................................... 1 第二章 SDH原理 .................................................... 2 2.1 SDH信号的帧结构和复用步骤 ....................................... 2 2.1.1 SDH信号的帧结构 ............................................... 2 2.1.2 SDH的复用步骤 ................................................. 5 2.2 SDH设备的逻辑组成 ............................................... 5 2.2.1 SDH网络的常见网元 ............................................. 5 2.2.2 SDH设备的逻辑功能块 ........................................... 7 2.3 SDH网络结构和网络保护机理 ....................................... 9 2.3.1基本的网络拓扑结构 ............................................. 9 2.3.2 自愈网 ....................................................... 10 2.4 SDH网的特点 .................................................... 12 2.5 SDH传输过程 .................................................... 13 第三章 硬件结构、设备简介 ......................................... 15 3.1 SDH设备总体介绍 ................................................ 15 3.2 T2000网管系统介绍 .............................................. 15 3.2.1 T2000网管的特点 .............................................. 15 3.2.2 单站配置 ..................................................... 16 第四章 拓扑结构 ................................................... 18 4.1网络拓扑结构图 .................................................. 18 4.2网管实现 ........................................................ 19 4.2.1 组网器材 ..................................................... 19 4.2.2内容说明 ...................................................... 20 4.2.3 T2000网管实现 ................................................ 20 第五章 结论 ....................................................... 36 5.1 设计总结 ....................................................... 36
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