Active queue management (AQM) algorithms are useful not only for congestion avoidance purposes, but also for the differentiated forwarding of packets, as is done in the DiffServ architecture. It is well known that correctly setting the parameters of an AQM algorithm may prove difficult and error-prone. Besides, many studies have shown that the performance of AQM mechanisms is very sensitive to ...

Several high-speed TCP variants are adopted by end users and therefore, heterogeneous congestion control has become the characteristic of newly emerging high-speed optical networks. In contrast to homogeneous TCP flows, fairness among heterogeneous TCP flows now depends on router parameters such as queue management scheme and buffer size. To the best of our knowledge, this is the first study of...

In recent years, AQM (Active Queue Management) mechanisms, which support the end-to-end congestion control mechanism of TCP (Transmission Control Protocol), have been widely studied in the literature. AQM mechanism is a congestion controller at a router for suppressing and stabilizing its queue length (i.e., the number of packets in the buffer) by actively discarding arriving packets. Although ...

Multimedia applications requires certain QoS to meet certain functionality.QoS requirements include bandwidth guarantees and temporal guarantees. In this paper, we propose a novel method that uses a cross layer architecture in which information from Application layer is used with UDPLite in Transport layer and Active Queue Management (AQM) with SiViRED in Network Layer with modified dynamic map...

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...

Internet Routers face the problem of congestion due to the increased use of Internet. Active Queue Management algorithm is a solution to the problem of congestion control in the Internet routers. As data traffic is bursty in routers, burstiness must be handled without comprising the high link utilization and low queuing delay. Congested link causes many problems such as large delay, unfairness ...

This paper presents an Active Queue Management (AQM) design based on a Proportional control system, which is shown to provide good conditions for rate adaptive real-time applications. Simulation results show that rate adaptive media sources over RTP/UDP achieve an aggregate core link utilization in the region 97.5–99.9%, with controlled delay and stochastic packet drop in the region 0.1–1.3% pe...

The influence of multiple bottlenecks on the stability of Active Queue Management (AQM) controllers, usually configured on a single bottleneck basis is discussed. We consider a network scenario where RED is configured at each router according to previously developed control theoretic techniques. These configuration rules assure stability in a single bottleneck scenario. We show that instability...

In the last three decades, the development of communication and networking technology has rapidly increased and the use of the internet has become one of the tasks in our daily life. The revolution of the internet from transferring the data to the multimedia applications makes it one of the most important and quickest media for delivering the information in the world. On the other side, this re...