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ADSL接入网的设计及扩容方案
作者:admin   发布于:2014-02-27 16:26    文字:【】【】【
 
摘  要

    ADSL技术是一种新兴的宽带接入技术,随着因特网技术的快速发展,因特网正在人们生活中起到越来越大的作用。现在很多居民有因特网接入的需求,然而在铺设光纤比较困难,给工程带来了难度。针对这种现状,ADSL技术正好可以提供合适的解决方案。本文介绍了ADSL的基本理论,从用户对网络的需求出发,采用ADSL技术在不破坏原有结构的基础上利用原有内部电话线实现ADSL宽带接
入的前景很好。本文就宽带ADSL接入网的现状及存在问题对目前的网络结构提出一些扩容解决方案。
 
关键词:ADSL  宽带  扩容
 

 
ABSTRACT

      ADSL technology is a new kind of broadband access technology, with the rapid development of Internet technology, the Internet is play a more and more important role in people life. Many residents now have Internet access requirements, in laying optical fiber is more difficult, however, brings difficulty to engineering. Aiming at the status quo, ADSL technology can provide the right solution. ADSL are introduced the basic theory, based on user demand for network, using ADSL technology in does not destroy the original structure on the basis of using original internal telephone line for ADLS broadband access in the foreground is very good. Broadband ADSL access network in this paper, the current situation and existing problems of the current network structure is put forward some dilatation solutions.
 
Keywords : ADSL  wideband  dilatation
 
                                                                                                           
 
 
 
 
 
 
 
 
 
 

 
目 录
 
第一章 绪 论............................................................................. 1
第二章 接入网理论..................................................................... 3
2.1接入网的定义及特点................................................................... 3
2.2 接入网的基本结构及功能.............................................................. 5
2.3 各种接入方式的比较................................................................ 6
2.3.1 桥接接入方式............................................................................ 6
2.3.2 传统IP接入方式....................................................................... 7
2.3.4 点对点隧道技术 转PPPoA接入方式................................... 7
2.3.5 PPPoE接入方式....................................................................... 7
第三章 ADSL网络理论................................................................. 9
3.1 ADSL的定义............................................................................ 9
3.2 ADSL系统结构......................................................................... 9
3.3 ADSL 的优势........................................................................... 11
3.4 ADSL扩容面临的问题.......................................................... 11
3.4.1 ADSL自身技术的限制................................................... 12
3.4.2 基础设施的限制................................................................. 13
3.4.3 其他方面的限制............................................................. 14
第四章ADSL技术原理................................................................ 15
4.1 QAM调制技术.......................................................................... 15
4.2 CAP调制技术....................................................................... 16
4.3 DMT调制技术........................................................................ 17
第五章 中国宽带网络现状................................................ 19
5.1宽带运营商认知度................................................................... 19
5.2 宽带接入率............................................................................. 20
5.3 宽带消费者评价....................................................................... 22
5.4 将要安装宽带的用户................................................................ 22
5.5网民对宽带服务的了解...............................................................24
5.6  宽带发展方向............................................................................. 25
5.6.1 建立合作关系,把宽带业务做大............................................ 25
5.6.2 紧抓质量,提升现有用户满意度......................................... 25
5.6.3 提供配套增值服务,使宽带功能不至匮乏.................... 25
5.6.4 降低使用价格,让利于民........................................................ 26
第六章 宽带扩容解决方案........................................................ 27
6.1传输速率................................................................................. 27
6.2 传输距离..................................................................................... 27
6.3 出线率........................................................................................ 28
6.4 机房面积.................................................................................. 28
6.5 MDF资源....................................................................................... 29
6.6 电源容量........................................................................................ 30
6.7 后台支撑系统............................................................................ 30
第七章 结论................................................................................ 31
7.1 ADSL网络的优点..................................................................... 31
7.1.1 上网和打电话互不干扰..................................................... 31
7.1.2 速度快................................................................................ 31
7.1.3 安装方便....................................................................... 31
7.1.4 技术先进......................................................................... 32
7.1.5 ADSL费用低廉................................................................. 32
7.1.6 ADSL能提供多种先进服务........................................... 32
7.2  ADSL网络的不足......................................................... 33
7.3 总结................................................................................ 33
致    谢.................................................................................... 35
参考文献........................................................................... 37


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