接入网发展趋势和存在的问题  

The Development of Access Network and Existing Problems

作　　者：车力军 

机构地区：[1]云南科优达通信系统设备有限公司

出　　处：《世界电信》1999年第2期10-13,共4页World Telecommunications

摘　　要：ITU先后制定了AN接口建议G.964、G.965以及宽带接口建议G.967、I.432、G.966等。引人注目的接入技术有:铜线接入方面的xDSL、HFC和非对称电缆调制解调器;光纤接入方面的V5接口技术、内置SDH接入网、APON、SDV等;无线本地环路以及宽带无线接入技术如LMDS、DBS等。接入网的目标是建立全业务宽带接入网(FSN),最后文中指出了接入网建设中存在的问题。ITU has successively published the access network interface recommendations G . 964 and G . 965 and the broadband network interface recommendations G.967, 1.432 and G.966. The prevailing access methods include: copper-based xDSLs, HFCs and asymmetrical cable modems: and V5 interface technology for optical fiber access, built in SDH access network. ATM - PON. SDV: WLL and broadband wireless access technologies such as LMDS and DBS. The goal of the access network is to deploy a broadband full - service network . The problems in the access network construction are pinpointed .

关 键 词：标准设计 数字用户环路 无线用户环路 接入网 

分 类 号：TN914.3[电子电信—通信与信息系统] TN919.72[电子电信—信息与通信工程]