下一代网络(NGN)的体系结构与软交换协议

Next Generation Network Architecture and Softswitch Protocols

软交换技术作为业务/控制与传送/接入分离思想的体现,是下一代网络体系结构的关键技术,其核心思想是硬件软件化,通过软件的方式来实现原来交换机的控制、接续和业务处理等功能,更快地实现各类复杂的协议及更方便地提供各种业务。通过对下一代网络体系结构的剖析,阐述软交换技术如何通过实现各种业务接续控制的共性,将与业务相关的内容转移到外部业务及业务层中,可扩展地处理未来网络中日益复杂的语音、视频和数据应用的实现思路,并指出了具体实现时可能遇到的技术问题。

Softswitch is the most important technology in Next Generation Networks (NGN) architecture. Through the way of software processing, it solves the complex functions like call control, call setup and other services which is difficult in traditional hardware telecom switches, and becomes core protocol of NGN. Through the description of the architecture of NGN, this paper discovers how Softswitch implements the common part of various high layer services and put others into services layer to fulfill the control in future complex applications, and finally describes what problems we will meet to put it into reality.'