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为了支持区分服务(Diffserv),提出了基于优先级的权重公平队列(PWFQ)调度策略。并提出了一种近似分析模型来简化对不同级别的调度权重的求解。同时定义了一种参数来评价分析模型的有效性和调度策略的公平性。仿真结果证实,我们的分析模型在负载较高时是有效的,而且调度策略能提供很好的公平性。
In order to support Differentiated Services (Diffserv), a Priority-based Weight Fair Queue (PWFQ) scheduling strategy is proposed. And an approximate analysis model is proposed to simplify the solution of different levels of scheduling weights. At the same time, a parameter is defined to evaluate the validity of the analysis model and the fairness of the scheduling strategy. The simulation results confirm that our analysis model is effective when the load is high, and the scheduling strategy can provide good fairness.