Evolution of Optical Transport Networks and Their Solution in 3G Networks

As new generation mobile networks, 3G networks focus on data services and integrate voice, data and multimedia services. However, traditional Optical Transport Networks (OTNs) cannot meet the requirements of 3G networks anymore, because of their complicated configuration, low bandwidth efficiency, high cost, and bad network and service scalability. The emerging of Multi-Service Transport Platform (MSTP), Wavelength Division Multiplexing (WDM), and Automatically Switched Optical Network (ASON) technologies for optical fiber communications makes up for these weaknesses. The leading solution to 3G access transport networks is the MSTP technology based on Synchronous Digital Hierarchy (SDH), while that to 3G core transport network is ASON+WDM.

基于智能城域MSTP设备的3G传输核心网络

城域网正面临着全面的建设和改造,但改造的目标需要有新的业务增长点和需求,3G网络的全面启动正带来了这样的业务源头,是推动城域网(传输网)全面改造的原动力。本文重点介绍了具备ASON功能的新型智能化MSTP设备对3G网络发展的支撑作用,新一轮的城域网建设应该是面向3G的网络建设方案。