为优化使用和管理网络资源,本文提出了核心承载网和宽带接入网的几种QoS解决手段。并通过在骨干层、汇聚层、接入层三个不同网络层面采取的不同技术手段实现NGN承载网QoS策略保证,最后通过在业务接入侧、网络核心侧的QoS策略实现网络业务服务质量保证。 In order to optimize the use and management of network resources, this paper proposes several QoS solutions for the core bearer network and broadband access network. And through the different layers of the backbone, the convergence layer, the access layer of the three different levels of network technology adopted to achieve NGN bearer network QoS strategy guarantee, and finally through the service access side, the network core side of the QoS strategy to achieve network business service quality assurance .