We investigate the interaction between Transmission Control Protocol (TCP) and an Active Queue Management (AQM) router, that are designed to control congestion in the Internet. TCP controls the sending rate with which the data is injected into the network and AQM generates control signals based on the congestion level. For a given TCP version, we define the optimal strategy for the AQM router a...

In this paper, we formulate the AQM (Active Queue Management) design problem for stabilizing a given TCP (Transmission Control Protocol) as state-space models. Thereby, we show that PD-type (Proportional-Derivative) AQM is a natural state-feedback control structure to stabilize the given TCP for the first time in the networking literature to our knowledge and by applying integral control action...

Network traffic has risen in recent years to the point that it is obviously and astonishingly 2020, with increase predicted double following days. Up 23 Teraa bit every month an incredible amount. The Active Queue Management (AQM) algorithm one of most significant study areas network congestion control; nevertheless, new self-learning management algorithms are needed on nodes cope huge quantity...

Denial-of-service attacks have become a regular occurrence on the Internet. The current architecture of the Internet, coupled with the relative ease with which software bugs can be exploited on Internet-connected hosts, provides a fruitful environment for the creation of malicious traffic attacks. This article proposes a novel DoS defence scheme based on Active Queue Management (AQM) principles...

State-of-the-art Internet is a decentralized control system employing dynamic Transmission Control Protocols at the sources and Active Queue Management protocols at the routers. The predominant transmission control protocol suites are variants of TCP [1] .TCP flow control is the most important mechanism for congestion control in IP networks. Since Jacobson proposed the end-to-end flow control s...

The problem of overbuffering in today’s Internet (termed as bufferbloat) has recently drawn a great amount of attention from the research community. This has led to the development of various active queue management (AQM) schemes. The last years have seen a lot of effort to show the benefits of AQMs over simple tail-drop queuing and to encourage deployment. Yet it is still unknown to what exten...

Active Queue Management (AQM) based on nonlinear difference equations has been proposed to solve the end-to-end TCP network congestion problem recently. The proposed AQM scheme can guarantee the stability of the multiple bottleneck network by nonlinear control for dropping probability of the routers. Nonlinear control often relies on some heuristics and network traffic controllers that appear t...

AQM (Active Queue Management) mechanisms support the end-to-end congestion control mechanism of TCP (Transmission Control Protocol). Several AQM mechanisms have been recently proposed and studied by many researchers. One of popular AQM mechanisms is the RED (Random Early Detection) gateway, which randomly discards arriving packets. Although its steady state performance has been fully investigat...

In this paper, we investigate stability, bifurcation and oscillations arising in a single-link communication network model with a large number of heterogeneous users adopting a Transmission Control Protocol (TCP)-like rate control scheme with an Active Queue Management (AQM) router. In the system considered different user delays are known and fixed but taken from a given distribution. It is sho...

Conventional IP routers are passive devices that accept packets and perform the routing function on any input. Usually the tail-drop (TD) strategy is used where the input which exceeds the buffer capacity are simply dropped. In active queue management (AQM) methods routers manage their buffers by dropping packets selectively. We study one of the AQM methods called as random exponential marking ...