区分服务及其组播环境中的一种接纳控制方案

提出了区分服务网络的一种基于集中式带宽代理(bandwidth broker,BB)的接纳控制方案并将其扩展到组播环境中,其目的是为了在区分服务网络提供端到端的服务质量(quality of service,QoS)保证. 带宽代理管理与维护区分服务网络域内的QoS状态信息和组播信息,并在网络域外的QoS信令或组播消息帮助下完成接纳控制与资源预留. 实验结果表明该方案具有比基于显式信令的分布式接纳控制方案更好的性能和更高的资源利用率,并能为区分服务网络的组播成员提供QoS保证.

Admission control scheme for differentiated services and its multicast environment

An admission control scheme based on the centralized Bandwidth Broker(BB) is proposed to provide End-to-End Quality of Service(QoS) guarantee for the Differentiated Services(DiffServ) and its multicast environment.The BBs maintain the QoS state information and multicast information for the DiffServ domains and perform admission control and resources reservation with the help of the QoS signaling messages or the multicast messages outside the DiffServ domains.The simulation results demonstrate that the proposed scheme can achieve better performance and higher utilization efficiency of network resources than the distributed admission control scheme based on the explicit signaling protocol and can provide QoS guarantee for the multicast members of the DiffServ network.