国内接入网技术发展现状.pdf

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1、国内接入网技术发展现状国内运营商接入网技术总体上将朝着高带宽方向发展。与此同时，用户需求的多样化决定了宽带接入将长期呈现多种接入技术的融合与协调发展的局面。不久前揭晓的 Netguide2008 中国互联网调查报告相关市场分析显示：最经常选择的上网方式中，2007 年中国互联网用户通过ADSL上网比例近 5 成。2007 年中国互联网用户通过ADSL上网比例达46.5%，ADSL已经成为国内主流网络介入方式。ADSL、专线上网、小区宽带、有线宽带四者合计85.9%。宽带用户已经占据用户的绝大多数比例。1.未来几年内 ADSL2+/VDSL2技术仍是主流的宽带接入技术就目前国内运营商在各地的发展

2、来看，ADSL2+和 VDSL2仍然是国内接入技术的主流。ADSL2+技术经过几年的发展，已发展成熟并逐步取代传统 ADSL技术，成为目前主流的宽带接入技术。ADSL2+在 2km 范围内可提供 10M以上的下行带宽，目前可以满足多数宽带业务的需要。伴随 ADSL2+技术日趋成熟的同时，支持高速接入的DMT VDSL技术有了新的进展，VDSL2标准于 2006 年 2 月得到进一步完善，在芯片商、设备商和运营商的共同推动下，目前该技术已取得一定进展。VDSL2将调制方式定为 DMT，支持高达 100M 的双向对称速率，并能与 ADSL、ADSL2+和 DMT调制的 VDSL1兼容，将是 DSL

3、技术的发展方向。ADSL2 目前已在江苏电信、上海电信、浙江电信、陕西电信、广西电信、河南通信、黑龙江通信、山东通信、河北通信、北京通信等全国近 30 个省区市规模应用，累计建设量已超过12 万线。需要指出的是，在长距情况下(大于 1.5km)，由于高频衰减十分严重，VDSL2传输性能与 ADSL2+相当，但由于 VDSL2芯片需要处理比 ADSL2+芯片高得多的频谱，其成本高于 ADSL2+，在长距应用环境下 VDSL2技术没有优势。总之，ADSL2+将用于长距接入，VDSL2主要用于短距高速接入，两种技术将互为补充，在未来几年内仍是主流的宽带接入技术。2.EPON/GPON 光纤接入技术将

4、获得一定发展光纤接入是适应网络融合和业务转型的大趋势，是宽带固定接入的发展方向，而 EPON和 GPON无源技术又将是光纤接入的主要方式。EPON技术相对较简单，技术和设备都较成熟；GPON技术的多业务承载和保护等能力都强于EPON，值得期待，但目前技术和设备都不成熟，设备成本也高。EPON和 GPON的抉择将很大程度上取决于设备价格、业务需求等多方因素。目前各运营商正组织有关EPON、GPON的测试和业务试验。经过试验和试商用后EPON/GPON光纤接入技术将以FTTN 和 FTTB方式取得一定发展，FTTNVDSL2/ADSL2+、FTTB+LAN甚至 FTTH将是 PON发展的一种重要形

5、式。文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ

6、10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X1

7、0V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9

8、 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6

9、I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档

10、编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1

11、D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R

12、6 ZZ10T1D2D4X3目前中国电信已完成EPON设备全面测试，重点验证了不同厂商EPON设备的互连互通。各地多数由地方政府自行建设，采取规模试验。早在 2004 年，武汉建成内地首个光纤到户住宅小区。2005 年，FTTH 的每户接入成本高达50006000 元，而目前已经降到了每户20003000 元，在武汉地区更是降到了每户最低1800 元，具备了推广的条件。在这几年的实践中，武汉电信采用了FTTH 和 FTTB/FTTN 相结合的方式，FTTH 主要以高档住宅和商业酒店为突破口，而FTTB 模式可以让多个终端用户共享一个接入口，每户的成本可以降低到600700 元甚至更低，与现有的

13、ADSL、LAN等宽带接入方式的建设成本处于同一水平，但其提供的带宽和业务承载能力是传统的宽带接入方式不可比的。武汉市政府已经下达文件，确定 2007 年实现 5 万户，2008 年十万户，2010 年要达到 50 万户。2007 年北京网通也已经在回龙观等多个小区建立了光纤用户容量已经达到 15000 户。网络,网通采用的技术为EPON,由烽火 通信提供设备方案,接入方式为FTTB+LAN光纤到楼模式。目前 光纤的主流 产品还是 EPON,该技术成熟且成本较低,商用程度占优,上行下行速率均为1.25Gbps,且运营商可以为每个用户设定速度,提供 0 至 1.25G 范围内的任意带宽。宽带FT

14、TX文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ

15、10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X1

16、0V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9

17、 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6

18、I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档

19、编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1

20、D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R

21、6 ZZ10T1D2D4X3网通的光进铜退建设思路基本与中国电信类似,主要采用 PONDSL的模式。新建小区一般采用ADSL或 EPON,也可以有效减少信号的衰竭,也便于维护。2+相关专家预测，明年中国电信各省分公司将会加大EPON设备的采购，中国电信南方各省未来将会有20 万线以上的需求；未来三年，FTTH 用户数将保持每年2-3 倍的增长率。3.WLAN/WiMAX 将作为重要补充手段满足网络和业务融合需要WiMAX和 WLAN 作为重要补充手段，将配合有限接入技术实现多元化宽带无缝接入网络。主要体现在：WLAN/WiMAX 用于热点覆盖；WLAN作为家庭联网的主要方式，提供灵活接入；Wi

22、MAX提供游牧式移动接入服务；利用WiMAX的广覆盖性解决光纤难以覆盖的郊区、农村接入问题。WiMAX试验项目全球已经有250 个，遍及美洲、欧洲、亚洲、非洲、大洋洲。2006 年在韩国、日本、美国、英国、法国、意大利、西班牙、新西兰共有24 个网进入商用阶段。WLAN 作为目前最为成熟和商用化程度最高的宽带无线接入技术，全球都有着较为成功的商业运营应用。如美国WayPort 公司，目前已在美国数百家酒店和机场提供接入服务，其中绝大部分为WLAN 无线接入。T-Mobile 已经为成千上万的星巴克咖啡店提供无线接入。在欧洲热点地区接入发展极其迅速，其完善灵活的收费体系获得了消费者的喜爱。据统计

23、，2005 年 WLAN 技术为世界各个运营商创造了 5 亿美元的收入。文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3

24、文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10

25、T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V

26、6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 H

27、R1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I1

28、0R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码

29、:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2

30、D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3在国内，中国 网通自 2001 年 10 月率先在上海 APEC会议上提供无线 宽带接入 服务以来，已经在全国数百个热点地区敷设了WLAN 网络。中国电信 的WLAN“天翼通”将 ADSL用户端设备和无线 局域网的 AP集成到一起，采用ADSL+WLAN的模式，解决了一个家庭多个终端接入的问题，有效地发展了家庭宽带用户。中国移动 的“随 e 行”是面向商务人士、集团客户推出的无线上网服务，用户可通过笔记本电脑、PDA等终端以 GPRS接入因特网和企业网。目前中国移动已在全国1000 多个热点地区提供

31、了WLAN 网络覆盖，并且可以实现全国漫游。中国联通早在 2003 年就考虑执行 CDMA1X+WLAN捆绑方案，实现 WLAN和 CDMA1X的无缝切换，满足用户对高带宽数据业务和低廉资费的要求，实现业务增值。/WLAN4、中国电信网络发展历程中国电信 1994 年开始建设 IP 网络，最初只有北京、上海两个节点，节点之间用 2M 带宽相连.1995 年中国电信开始对外提供业务，有窄带拨号、电子邮件、文件传输、Web 访问等.1996 年中国电信 IP 骨干网更名为 ChinaNet，节点逐步覆盖全国所有省会，由于窄带拨号接入的入网领示号为163，因此被称为 163网络。文档编码:CG4R6

32、I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档

33、编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1

34、D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R

35、6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1

36、P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R

37、10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:C

38、G4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4

39、X31996 年底一个只能在国内访问的互联网建成，采用私有地址 10.0.0.0/8，入网领示号 169，称为 169 网络。1997 年各个中国电信省公司独立建设省内IP骨干网，构成独立的路由域，采用私有AS号码，在省会和省内第二出口节点同ChinaNet 骨干网通过 eBGP相接，ChinaNet 全网分为骨干网、省网和城域网三级结构，其中骨干网分为核心层、汇聚层两层。1999 年到 2000 年 ChinaNet 快速发展，逐步采用同时期最先进的设备组网，由于ADSL用户增长，致使流量上升很快，核心、汇聚层之间采用 2.5G 和 10G 链路，网络国际出口带宽增加。2001 年中国电信利

40、用原169 网络设备（主要是思科 75 系列路由器），通过 POS155互连组建了 MPLS网络，向外提供 MPLS VPN业务。2003 年，ChinaNet 进行优化整合，取消省网，网络结构调整为骨干网和城域网两级，骨干网覆盖节点300 个节点左右，骨干网路由器约 800 台.5、目前电信网络结构CPN：用户驻地网MAN：城域网UNI：用户网络接口NNI：网络节点接口文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X

41、10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W

42、9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R

43、6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文

44、档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T

45、1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6

46、R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR

47、1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3接入网：分为馈线段、配线段和引入线核心网：分为省际干线、省内干线、局间中继网（即城域网）从水准方向看，则电信网可以分为三大部分，即用户驻地网(CPN)、接入网与核心网，两两之间有标准介面定界。用户驻地网

48、指用户终端至用户网路介面(UNI)之间所包含的机线设备，小至机，大至局域网。核心网是电信网的骨干，对网而言，包含长途网和局间中继网。接入网即为沟通核心网与CPN之间的部分，由一系列传送实体(诸如线路设施和传输设备)组成，为传送电信业务提供所需的传送承载能力。城域网(MAN)是源自计算机通信领域的概念，应用于公用电信网时，大致相当传统电信网的局间中继网位置。从垂直方向看，电信网至少可以划分为三层，从下至上为传送网，业务网和应用层。传送网负责资讯的传送，为其上层的业务网提供传送平台。业务网负责为用户提供所需的业务，为其上层的具体应用提供业务平台。业务网包括传统网，非IP 数据网(又称基础数据网)，

49、IP网等等。传送网可以分为物理层和通道层，每一层可以进一步分解成更细的层面。为了支持各层网路的有效运行和管理，需要有支撑网。所谓支撑网具体指信令网、同步网与电信管理网。6、中国移动网络中国移动现有的网络结构中国移动通信集团的网络是基于中国七号信令(MTP-SCCP、TACP)的传统电路型网络，高层协议采用GSM-MAP。对于目前中国移动的网络来说，主要是实现核心网、数据网和无线接入网的IP 化。文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10

50、R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码:CG4R6I10R10W9 HR1P9X10V6R6 ZZ10T1D2D4X3文档编码: