中国联通城域网的建设

Construction of China Unicom metropolitan area network

在分析中国联通城域网特点及建设的基础上 ,对联通城域网所承载的移动业务、集团大用户、智能小区等业务需求进行了分析 ,同时就当前城域网所采用的 ATM( Asynchronous Transfer Mode)、千兆以太网、MSTP ( Multi Service Ttansport Platform )、 DWDM ( Dense Wavelength Division Multiplexing)技术进行了论述 ,提出联通城域网分层 (核心层、汇聚层和接入层 )结构 ,并结合联通城域网各层的具体实际情况 ,提出联通城域网各层应采用的 ATM、MSTP等几种技术和几种建设方式的建议 ,以指导联通公司城域网建设。

The features of construction of China Unicom MAN(Metropolitan Area Network), the business needs of China Unicom MAN, such as mobile communication Business, big group customer, intelligentize uptown etc are analyzed.The current adoption technologies of MAN, ATM(Asynchronous Transfer Mode),GE(Gbit Ethernet) ,MSTP(Multi Service Transport Platform),DWDM(Dense Wavelength Division Multiplexing) are also discussed. It presents layered structure of China Unicom MAN: Core layer,Converge layer,AN layer. And join together the concrete actual circumstance of each layer of China Unicom MAN. It presents suggestion of adoption technologies, for example:ATM,MSTP etc and construction methods of each layer of China Unicom MAN . Then guides the construction of China Unicom MAN.