IP网络QoS实现技术研究

Research on Implementation Technologies for QoS of IP Networks

文章主要研究基于多协议标记交换 (MPLS)技术和区分服务 (DiffServ) /资源预留协议 (RSVP)结合模型的IP网络服务质量(QoS)实现技术。首先根据带宽代理 (BB)模型给出一种简化的QoS体系结构,然后着重讨论该结构中的 4个主要模块:RSVP模块、DiffServ模块、MPLS模块和BB控制模块。在ns-2. 26上的仿真表明,该方案有效地改善了丢包率和时延这二个QoS性能指标。

This paper focuses on the implementation technologies for QoS of IP networks based on the integration of MPLS and DiffServ/RSVP. A simplified QoS architecture is provided resulting from the Bandwidth Broker (BB) model. Discussion is then devoted to the four key modules, RSVP module, DiffServ module, MPLS module and BB control module. The emulation conducted on ns-2.26 has shown that the proposed scheme effectively improves the QoS performance in terms of packet loss ratio and time delay.