摘要
高速包交换电路常常需要为各种不同要求的服务公平地分配带宽,在公平分配带宽的同时还需要满足这些服务的服务质量(QoS)参数。不同QoS需求的业务将被复用到同一条输出链路上,要为它们公平地分配带宽就需要用到各种各样的流量调度算法。加权公平队列(WFQ)是一种常用的流量调度算法。它不仅能保证带宽分配的公平性,而且具有较好的时延性能。文章较为详细地讨论了WFQ算法的基本原理。
It is often necessary to fairly allocate bandwidth among services with different requirements in high-speed packet switching circuits while meeting their QoS parameters. When queues of such services are multiplexed to a single output link, a variety of traffic scheduling algorithms are used for this purpose. Weighted Fair Queuing （WFQ） is a commonly used scheduling algorithm, which can not only ensure fairness, but also provide good delay performance. This paper discusses the basic principle of WFQ in detail.
出处
《光通信研究》
北大核心
2006年第5期16-18,共3页
Study on Optical Communications
