Active Queue Management (AQM) algorithm is very important to manage buffers and transfer packets for wired or wireless networks. But the unresponsive flows to the network congestion control are so dangerous to the network equilibrium and Quality of Service (QoS), especially from a point of network resource allocation. In some certain scenarios, the limited network resource (buffers) can be occupied by a unresponsive flow easily, which results in Reduction of Quality (RoQ). A new AQM algorithm- Clue (Compare and Limited Unresponsive flows) is proposed in order to strengthen the robustness of Internet against these unresponsive flows. As a sort of scheduling algorithm, Clue relies on the detection and punishment of unresponsive flows and gets the elastics control of unresponsive flows, which in turn benefit the buffer queue with the high performance. Via the comparison and evaluation experiments, it has been proved that Clue can detect and restrain unresponsive flows more accurately compared to other AQM algorithms.
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