Adaptive Red with Restraint on Non-responsive Flows

L. Li and G. Lee (USA)


Queue management, non-responsive flows, adaptive RED


This paper proposes a modification to Random Early Detection (RED) through which non-responsive traffic behaviors can be restrained via adaptive adjustment of drop probability. In order to effectively prevent non responsive flows from starving responsive flows for buffer and bandwidth at the gateway, the RED framework is modified in this way: on detecting when the non responsive flows starve the queue, packet-drop intensity (such as the Max_p of RED) can be adaptively adjusted to restrain non-responsive flows to achieve the fair sharing of buffer and bandwidth. Intentionally restraining non responsive flows is to increase the throughput and decrease the drop rate of responsive flows. Simulation results support the adaptive adjustment of drop probability: the enhancement of responsive traffic and the better sharing of buffer and bandwidth are achieved in our scheme. The adaptive RED has comparatively better performance under a variety of traffic scenarios, especially the mixed traffic with responsive flows and non-responsive flows.

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