支持实时业务的队列调度机制与网络资源配置原则研究

Study of configuration rules of Internet resources and queuing scheduler for supporting real-time service

分析了广为应用的WFQ调度机制的特点与局限性,提出了克服其局限性的方法;并针对WFQ存在的问题提出了WFQ改进算法,仿真验证了改进算法能显著改善实时业务的报文丢失率与网络传输时延;给出了因特网支持实时业务的网络资源配置的一般原则,以供网络运营者参考。

This paper first analyses the characteristics and disadvantage of WFQ scheduler, which is widely used in current Internet. The authors propose a new algorithm,which makes improvement upon current WFQ scheduler and resolves the problems encountered by WFQ scheduler. Simulation shows that this algorithm can efficiently reduce network transmission delay and the loss ratio of real-time service. At last, this paper presents the basic rules for the configuration of Internet resource to support real-time services.