针对SDH传输网络长支链的优化研究硕士学位论文.doc

硕士学位论文
针对SDH传输网络长支链的优化研究
摘要
温州移动本地传输网从2002年开始自建,%的翻天覆地的变化过程。温州地区环境复杂,在本地传输网建设的过程中形成了较多的长支链,存在严重的安全隐患。随着移动通信业务量在不断提升,2008年建设规模更是空前巨大。同时用户对所提供业务可靠性的要求也大幅提高,加上温州地区复杂的地形情况、普遍发达的乡镇经济圈、夏季台风洪水灾害频繁等因素,本着建设适合温州传输线路现状且安全可靠的传输网络的原则,形成稳定可靠的接入层网络。
本文给出了多种SDH传输网优化方案和新增长支链的流程控制方法,实施现网长支链改造,减少现网长支链数量,同时在基站传输建设过程中引入一系列控制措施,建立一整套长支链控制机制,严格且有效地控制新增长支链,形成良性循环,力求逐步降低支链节点数,提高成环率,形成稳定可靠的接入层网络。
通过此项目,温州本地传输网组网的安全性、稳定性及可扩展性得到了增强,保障了网络安全,同时也为今后本地网的建设和维护提供了可供借鉴的方案。
关键词: SDH,长支链,传输网
Abstract
Wenzhou mobile local work built since 2002, has gone through a lease from the full percent of the earth-shaking changes in the process. Wenzhou, plexity of the local environment, the local work in the process of building a more long-branched-chain, there are serious security risks. With the munications business in the ever-increasing scale of construction in 2008 is unprecedented. At the same time, business users of the reliability provided by a substantial increase in the requirements, together with the Wenzhou region'plex terrain, the generally well-developed economic zone of the township, the frequent floods in the summer of typhoons and other factors, in-building transmission lines for the status quo in Wenzhou and the safe and reliable the principle of the work to form a stable and work access layer.
This item is given a wide range of SDH work optimization program and the methods of branched-chain growth in the course of the introduction of base-building measures to control the formation of long branched-chain to Reduce the long-branched-chain, to improve the rate of cyclization to form a stable and work access layer.
Through this project, Wenzhou, the local work security, stability and scalability has been enhanced to protect work security.
Keywords: SDH, long branched-chain, work


目录
摘要 i
Abstract ii
图目录 IV
表目录 VI
第1章绪论 1
课题背景 1
基本概念解释 1
什么是SDH? 1
复用方式 3
运行维护方面 4
没有统一的网管接口 4
SDH 的优点 5
传输支链 5
1.