一种提供电信级QoS的IP网络体系架构

One IP-based Network Structure Providing Telecomm-level QoS

本文将IP业务网络系统按照功能分为三个平面承载面、信令面和业务面。承载面承载媒体与信令流,信令面完成各种控制功能,应用面是媒体资源服务器。承载面使用MPLS技术,进行带宽预规划,满足需要QoS的业务,并在接入层完成对用户接入及流量的各种控制功能。互联网业务则走普通的IP路由。从而实现基于IP网络,既能提供保证电信级QoS的业务,同时支持普通互联网业务的网络体系结构,具有良好的网络与业务扩展性。

IP-based service network is divided into three planes, bearing plane, signaling plane and application plane. Bearing plane bears media and signaling traffic, and signaling plane completes all control functions, and application plane means media or resource servers. Bearing plane uses MPLS technology, with bandwidth pre-planned, to meet the needs requiring QoS, and user access control and traffic control are also completed in the access layer of the bearing network. Internet traffic goes through common IP routing. So the network structure not only supports Internet services, but also ones needing telecomm-level QoS, while well possessing network and service scalability.