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QDB-AQM:基于排队延时的网关拥塞控制设计

DOI: 10.13190/jbupt.200805.30.laij, PP. 30-35

Keywords: 网关,拥塞控制,主动队列管理,显式拥塞指示

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Abstract:

提出了一种基于排队延时的主动队列管理(AQM)算法,该算法力求达到高吞吐量、低排队延时、短队列长度、低丢失率和较好的公平性能,相对于其他AQM算法具有实现简单的特点.通过排队延时代替DropTail网关中分组丢弃的方法监测拥塞,并设置往返时间(RTT)估值作为拥塞探测的单门限,如果某分组排队延时超过该门限,则根据显式拥塞指示(ECN)机制标记该分组以通知TCP源端采取相应措施以响应拥塞.在ns-2下仿真表明该算法能达到预期的性能.

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