Most Active Queue Management (AQM) algorithms based on control theory have difficulty in obtaining desirable performance once the network conditions or the traffic patterns change out of the presumed ones they are designed for. To address these problems, a new self-tuning AQM algorithm called STR is proposed in this paper. STR has the ability of keeping minimum variance between the instantaneou...

A Mobile ad-hoc network (MANET) is a self configuring infrastructure less network of mobile devices connected by wireless links. In MANET the proper maintenance of resources and link to avoid congestion is main issues. In this paper our motive is to get better utilization of resources and avoid congestion. For communication system uses queuing techniques, Traditional queuing techniques like Dro...

Denial Of service (DoS) attacks has become a major problem to intranet and Internet services. DoS attacks can be detected and eliminated using existing efficient Active Queue Management (AQM) schemes like RED. A new kind of DoS attacks have become more common in today’s Transmission control protocol (TCP) services, i.e., Low Rate Denial of Service (LDoS) attacks. LDoS attacks will degrade the p...

Abstract— The internet and its applications are an integral part of our daily life. Today’s Internet needs to provide Best Effort Service. With the rapid transformation of the Internet into a commercial infrastructure, demands for quality of service have rapidly developed. Traffic is processed as quickly as possible, but there is no guarantee of timelines or actual delivery. The people of the m...

In this paper, a design problem of congestion controllers is discussed for TCP/AQM(Transmission Control Protocol/Active Queue Management) networks. The proposed method consists of two control techniques. First one is based on a gain-scheduling technique considering nonlinearities of TCP/AQM networks. But the designed congestion controller is a state feedback controller and it is impossible to e...

In this paper, a new SCTP congestion control mechanism is introduced in multi-homing mode. Congestion in each route can be avoided or can be controlled, based on an Active Queue Management (AQM) method. Also, routers compute probability of congestion for the sources on the paths and then notify them. Therefore, the sources can adjust their sending rates on each path effectively and if necessary...

Rapid development of telecommunication technologies and the ever growing network users demands have made network congestion a prominent problem in today’s Internet. Congestion not only brings significant performance degradation to the network, but also hurts the Quality-of-Service (QoS) that the users receive and even raises up some security concerns such as Denial-of-Service (DoS) attacks. The...

We present a novel active queue management (AQM) technique to demonstrate the efficacy of practically harnessing the predictive utility of SSR indications for improved video communication. We consider a network within which corrupted packets are relayed over multiple hops, but a certain percentage of packets needs to be dropped at an intermediate node due to congestion. We propose an AQM techni...

Nowadays, congestion in communication networks has been more intractable than ever before due to the explosive growth of network scale and multimedia traffic. Active queue management (AQM) algorithms had been proposed to alleviate congestion to improve quality of service (QoS), but existing algorithms often suffer from some flaws in one aspect or another. In this paper, a novel AQM algorithm wi...

Internet traffic is bursty and unpredictable. It is therefore important to control congestion to protect users from traffic surges in a way that is efficient, stable and robust. Research has shown that active queue management (AQM) has the potential to control congestion such that these requirements are met. However, despite much work and many published proposals of AQM algorithms, a satisfacto...