This paper identifies the lone linear drop function for computing dropping probability between certain queue threshold values as a major weakness random early detection (RED) algorithm it leads to large delay and instability. To address this concern, we propose an enhanced RED-based called detection-quadratic (referred “RED-QL”) active management (AQM) which leveraged benefit of quadratic packe...

Internet over the past few years has undergone dramatic changes in terms of scale, penetration rate and the diversity of applications. The demand for continuous network connectivity is profilerating. Moreover, it has been observed that the usage of real time applications like Voice over IP (VoIP) and Live Streaming has increased drastically. Passive Queue Management (PQM) mechanisms in the rout...

Internet congestion control and congestion avoidance have been active research interests in the area of networking (see, for example [1] [2] [3]) during the last two decades. It has two components: (1) the end-to-end congestion control protocol, such as TCP [4], and (2) an active queue management (AQM) scheme implemented in routers. AQM signals congestion by discarding or marking packets. When ...

In this paper, we propose a novel proportional-differential-type feedback controller called Novel-PD as new active queue management (AQM) to regulate the queue length with small oscillation. It measures the current queue length and uses the current queue length and differential error signals to adjust packet drop probability dynamically. We provide control theoretic analysis of system stability...

The 6 H -[1,2,5]thiadiazolo[3,4- e ]thieno[3,2- b ]indole-flanked para -azaquinodimethane ( p -AQM)-based polymer semiconductors PQ-1 and PQ-2 are rationally designed through a ?-extended aromatic-quinoidal design strategy.

Analytical and empirical studies have shown that self-similar trafic can have detrimental impact on network performance including amplified queuing delay and packet loss ratio. On the flip side, the ubiquity of scale-invariant burstiness observed across diverse networking contexts can be exploited to better design resource control algorithms. In this paper, we explore the issue of exploiting tr...

Active Queue Management (AQM) schemes aim to stabilize router queue sizes and provide better fairness among a set of TCP connections. Random Early Detection (RED) is one of the first and well-known AQM schemes. Explicit Congestion Notification (ECN) is a modified version of RED in that it notifies a sender about congestion, instead of dropping its packet. Under such AQM schemes, TCP connections...

The Shrew attack is a denial of service attack wherein a rogue end-system periodically generates a high-bandwidth “spike” in order to cause TCP senders to experience loss simultaneously, synchronize their retransmissions, and ultimately experience congestive collapse. Because these spikes are periodic, overall the Shrew is a low bandwidth flow and difficult to detect and police. Currently, the ...

Active Queue Management (AQM) policies are mechanisms for congestion avoidance, which pro-actively drop packets in order to provide an early congestion notification to the sources. In this paper we propose a new Adaptive Prediction based Approach for Congestion Estimation in Active Queue Management (APACE) that predicts the instantaneous queue length at a future time using adaptive filtering te...

Active Queue Management( AQM) is an efficient tool in the network to avoid saturation of the queue by warning the sender that the queue is almost full to reduce its speed before the queue is full. The buffer management schemes focus on space management, in the other hand scheduling priorities (focusing on time management) attempt to guarantee acceptable delay boundaries to applications for whic...