本文讨论了在区分服务的框架下,分层的QoS实现机制,即网络的QoS控制分为域间的QoS控制和域内的QoS控制。并着重考虑了在域内实现基于BB的QoS体系结构,它考虑了QoS路由、接纳控制、网络策略管理等因素,因此能实现良好的QoS保证并在网络域内部实现整体优化。
In this paper, a hierarchical QoS control mechanism was discussed according to the DiffServ framework, i. e. the whole network's QoS control was divided into inter-domain QoS control and intra-domain QoS control. Moreover,the BB-based intra-domain QoS control was given a special attention. In the BB-based QoS control architecture, the QoS routing, admission control, and network policy management were taken into account for a whole,thus,the network optimization can be easily realized.