中国联通下一代网络的实践与思考

China Unicom's Practice and Thoughts on NGN

文章介绍了中国联通的多业务统一网络平台,包括多业务服务质量(QoS)保障的融合的承载平台、融合的软交换核心控制架构、多业务QoS保障的城域综合业务网络和基于IPv6的网络承载技术。依据中国联通在下一代网络(NGN)方面的实践,文章对多业务统一网络平台的先进性、效果与效益进行了总结,并指出了存在的问题。文章指出:由于未来NGN技术将向基于IP多媒体子系统(IMS)的NGN方向继续演进,同时网络承载层技术将逐步从IPv4过渡到IPv6,因此中国联通将积极探索基于IMS的NGN网络架构与组网模式,努力开展面向IPv6的应用实验与推广工作,特别是移动IPv6业务的开发和推进。

This paper looks into China Unicom's QoS guaranteed, unified multiservice platform with regard to the integrated service bearing platform, converged and Softswitch-based architecture, metropolitan area integrated services network, and IPv6-based network bearing technologies. On the basis of China Unicom's practice on NGN, it summarizes the advanced nature, effect and profit of the unified multiservice platform and points out problems existed with the platform. It is noted that, since NGN will further evolve towards the IP Multimedia Subsystem (IMS) based networks and network bearing layer technologies will transit from IPv4 to IPv6, China Unicom will actively probe into the IMS-based NGN architecture and networking modes, and make great efforts on the trial application and promotion of IPv6, especially on the development and publicity of mobile IPv6 services.