电信网的技术转型和下一代网的发展和演进

本文首先探讨了电信业宏观发展环境的历史性变化,阐明电信网面临的技术转型的重任和向下一代网发展的必然性,然后分析了下一代网络的基本概念和特点,接下来分别探讨了向以软交换/IMS为核心的下一代交换网的演进,向以3G/B3G为代表的下一代移动通信网的演进,向以IPv6为基础的下一代互联网的演进,向多元化的无缝宽带接入网的演进以及向以光联网为基础的下一代传送网的演进.最后指出各种层次意义上的融合将是下一代网络和业务发展的主旋律和长期奋斗方向,对转型的难度和所面临的主要挑战要有足够的认识.

Technology Transformation for Telecommunication Networks and Development and Evolution of Next Generation Networks

Firstly the paper described historic change of the macro development environment of telecommunication industry and pointed out the heavy task of technology transformation telecom industry will face to and necessity evolving towards to next generation network (NGN). Secondly the paper analyzed basic concept and characteristics of NGN. Thirdly the paper investigated evolution towards to next generation switching network based on softswitch and IMS, evolution towards to next generation mobile network represented by 3G and B3G, evolution towards to next generation Internet based on IPv6, evolution towards to seamless broadband access based on multiple technologies and evolution towards to next generation transport networks based on optical networking. Finally the paper pointed out that the convergence at different senses will play a center role for next generation networks and services development and will become major objective for long term. However, transformation is not an easy job and people must well prepare to face to many challenges never encounter before.