基于以太网的IP接入网络的QoS技术研究

QoS Technology of Ethernet-based IP Access Network

接入网的 QoS 机制是实现 NGN 中端到端的 QoS 保证的重要因素,而以太网是最为主要的接入网技术。本文讨论了 ITU NGN 专题组 NGNFG 中关于基于以太网 IP 接入网络的 QoS 的控制体系结构的研究进展,在基于以太网 IP 接入网络的定义和参考模型中分析了基于以太网 IP 接入网络的 QoS 问题,本文阐述了基于以太网的 IP 接入网络的支持动态和每个会话控制的 QoS 控制过程和提出了有关的接口以及它们的需求。

QoS mechanism in access network is a key factor to end-to-end QoS guarantee of NGN, and Ethernet pre dominates in the access network.. This paper discusses the study on QoS control architecture for Ethernet based IP ac eess network of ITU NGNFG. The definition of Ethernet-based IP access network and the reference architecture are firstly introduced,then the QoS problem of Ethernet-based IP access network is analysed,and then the QoS control architecture for support of dynamic and per-session QoS control over Ethernet based IP access network is discussed,moreover the QoS-related control interfaces and their requirements are briefly introduced.