The phenomenon “bufferbloat” occurs when the buffers of network intermediary nodes fill up, causing long queuing delays. This has a significant negative impact on quality service applications, particularly those that are sensitive to time delay. Many active queue management (AQM) algorithms have been proposed overcome this problem. Those AQMs attempt maintain minimal delays and good throughput ...

Cable modems based on Data-Over-Cable Service Interface Specifications (DOCSIS) provide broadband Internet access to over one hundred million users worldwide. In some cases, the cable modem connection is the bottleneck (lowest speed) link between the customer and the Internet. As a result, the impact of buffering and bufferbloat in the cable modem can have a significant effect on user experienc...

Several variants of the Transmission Control Protocol (TCP) have been proposed for overcoming the inefficiency of the TCP Reno when operating in high-speed networks. However, these variants by themselves cannot prevent network congestion. Congestion avoidance also relies on other mechanisms, such as Active Queue Management (AQM). This paper introduces a novel optimal AQM policy to operate in ne...

Active Queue Management (AQM) applies a suitable control policy upon detecting congestion in networks. In this paper, an adaptive Proportional-Integral (PI) controller based on Artificial Neural Networks (ANN) is applied to AQM for the objective of congestion avoidance and control in middle nodes. The proposed controller is simple and can be easily implemented in high-speed routers. Neural Netw...

We present a study of the e®ects of active queue management (AQM) on the average queue size in routers. In this work, three prominent AQM schemes are considered: packet classi ̄cation, checking service level agreements (SLA) and queue scheduling. This paper presents several adaptive resource sharing models that use a revenue criterion to allocate bandwidth in an optimal way. The models ensure Qo...

—This paper presents and analyses the implementation of a novel active queue management (AQM) named FavourQueue that aims to improve delay transfer of short lived TCP flows over a best-effort network. The idea is to dequeue in first packets that do not belong to a flow previously enqueued. The rationale is to mitigate the delay induced by long-lived TCP flows over the pace of short TCP data req...

Abstract: This paper compares the performance of two algorithms for congestion control of streaming media. The two methods are Datagram Congestion Control Protocol (DCCP) over RED, and a solution based on an Active Queue Management (AQM) combined with explicit feedback of congestion level experienced at routers. DCCP relies on binary congestion metrics, either as packet dropping or ECN marking ...

With the exponential growth of the Internet traffic, congestion problems become severe. To solve these severe problems, the Internet Engineering Task Force (IETF) recommends implementing the Active Queue Management (AQM) mechanism on the Internet routers. This paper introduces a robust AQM algorithm, called Adaptive Fuzzy Proportional Integral Derivative (AF-PID), which adaptively tunes the par...

Teknologi TCP end-to-end congestion control hanya menangani kemacetan jaringan dari suatu host tetapi tidak pada atau intermediate network, oleh karena itu teknologi Active Queue Management (AQM) dikembangkan untuk mengantisipasi didalam yaitu router. AQM dapat mengatasi buffer overflow router dan mencegah terjadinya masalah sinkronisasi yang padat, dengan mendeteksi sebelum terjadi jaringan. R...

This paper studies how to design a stabilizing AQM in supporting TCP (Transmission Control Protocol) with arbitrary delays. For the well-known AIMD (Additive Increase Multiplicative Decrease) dynamic model of TCP, our study shows that we can compensate for arbitrary delays explicitly by applying a modified virtual queue dynamics that makes the equilibrium queuing delay zero. This study also ver...