In this paper we validate through simulations a duality model of TCP and active queue management (AQM) proposed earlier. In this model, TCP and AQM are modeled as carrying out a distributed primal-dual algorithm over the Internet to maximize aggregate source utility. TCP congestion avoidance algorithms, such as Reno and Vegas, iterate on source rates, the primal variable. AQM algorithms, such a...

Abstract— The Active Queue Management (AQM) is a technique that consists of ECN (Explicit Congestion notifications) in internet routers. Congestion is an important issue which researcher focuses on in the TCP network environment. AQM is a router – based mechanism for early detection of congestion inside the network. This paper provides an analysis of congestion metric with flow information in q...

With the development of science and technology, new road scientific economic financial has played a decisive role in supporting undertaking. To accelerate development, it is very important to increase guiding undertaking real economy. Therefore, necessary promote economy under perspective financialization based on some actions. judge implementation effect these actions, this paper develops mult...

In this paper, we investigate how to design AQM with a low-pass filter (average queuing) in supporting TCP based on the well-known AIMD dynamic model sharing a common bottleneck router. Since we formulate the AQM design problem for the given TCP as a state-space model, we get two interesting and important results: 1) We derive PD-type (Proportional-Derivative) AQM structure in terms of queue le...

Recent years have seen an increasing interest in the design of AQM (Active Queue Management) controllers. The purpose of these controllers is to manage the network congestion under varying loads, link delays and bandwidth. In this paper, a new AQM controller is proposed which is trained by using the SVM (Support Vector Machine) with the RBF (Radial Basis Function) kernal. The proposed controlle...

In recent years, AQM (Active Queue Management) mechanisms, which control the number of packets in the router’s buffer by discarding an arriving packet, have been actively studied. In past studies, most of AQM mechanisms have been designed by taking account of a single router; i.e., few AQM mechanisms have been designed by taking account of multiple routers in the network. In a general network w...

Bufferbloat is a phenomenon in computer networks where large router buffers are frequently filled up, resulting high queueing delay and variation. More more delay-sensitive applications on the Internet have made this pressing issue. Interacting with Transmission Control Protocol (TCP), active queue management (AQM) algorithms run routers play an important role combating bufferbloat. However, AQ...

This paper proposes a Particle Swarm Optimization (PSO) method for determining the optimal parameters of a first-order controller for TCP/AQM system. The model TCP/AQM is described by a second-order system with time delay. First, the analytical approach, based on the D-decomposition method and Lemma of Kharitonov, is used to determine the stabilizing regions of a first-order controller. Second,...

AQM attempts to provide high network utilization with low loss and delay by regulating queues at bottleneck links. While many AQM algorithms have been proposed, most suffer from instability, require careful configuration of nonintuitive control parameters, or are not practical because of slow response to dynamic traffic changes. In this paper, we propose a new AQM algorithm that combines the mo...

Since random early detection (RED) was proposed in 1993, many active queue management (AQM) algorithms have been proposed to support better end-to-end Transmission Control Protocol (TCP) congestion control. In this article, the authors introduce and analyze a feedback control model of the TCP/AQM dynamics. Then they suggest the concept of an AQM algorithm that can detect and avoid congestion pr...