ATM论坛将基于速率的流量控制选定为 ABR业务的流量控制方法 .通过对基于速率的流量控制和基于凭证的流量控制方法的研究 ,提出了一种信元丢弃流量控制原则 ,该模型继承了基于凭证方法的记数机制 ,通过设定高低缓存门限和调节速率升降因数来控制源端速率 .仿真结果表明 ,这种控制机制不仅能够保证缓存的充分利用 ,而且能够提高其在减少信元丢失等方面的性能 The ATM Forum chooses rate-based traffic control as the traffic control method for ABR traffic.Based on the research of rate-based traffic control and voucher-based traffic control, a cell drop traffic control principle is proposed, which inherits Based on the counting mechanism of voucher method, the source rate is controlled by setting the high and low cache thresholds and adjusting the rate rise and fall factors.The simulation results show that this control mechanism can not only ensure the full use of the cache, but also improve its efficiency in reducing cell loss And other aspects of performance