下一代网络中的QoS研究

对于下一代网络(NGN),如何保障端到端的服务质量(QoS)是NGN的核心问题之一,直接影响着NGN业务的提供.该文给出了NGN的网络体系结构和业务特点,针对其对服务质量的要求,探讨了在NGN中实现QoS的框架模型,着重介绍了几种实现端到端QoS保障的关键技术,分析了它们各自的特点和存在的问题.

Research on the Quality of Service in NGN

With the development of networking technology and the multi-aspect growth of user applications, the traditional network is evolving into the next generation network. How to provide the end to end Quality of Service is one of the key issues of NGN which exerts a great influence on the service of NGN. On the basis of up to date progress of researches on NGN, this paper first presents the architecture and primary characteristics of NGN and then discusses the general model of QoS and several key QoS technologies customized for NGN requirements and critical to guarantee the end to end QoS with their features and inherent problems analyzed. Finally, this paper makes a further study of QoS of NGN.