What is it about?
The main idea of this paper is to design an adaptive rate-based queue management method for network sources with different Round Trip Times. The goal is to achieve weighted fairness, maximum utilization and compatibility with both large and small RTTs. The communication network consisting of a bottleneck link and N TCP sources is considered as a multi-input single-output system.
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Why is it important?
The proposed procedure can tolerate both large and small RTT values, and consequently, it can be used in a wide range of communication networks. It will be shown through analytical computations that the queue length converges to the desired value, which results in no congestion in the network. Also it is shown that the sending rates tend to the designed rates based on the adaptive law for the utilization factors, which results in weighted fairness and maximum bottleneck utilization.
Perspectives
As the buffer capacity is limited and the number of the internet users increases every day, utilization of congestion control schemes is essential in a communication network. the proposed approach avoids congestion with the advantages of fairness, maximum utilization and fast response with no oscillation, simultaneously. Simulation results based on network simulator NS2 and Simulink confirm the claims and also show that there is no oscillations in the response, which cause that the network operate with no delay jitter.
Dr Farzad Rajaei Salmasi
University of Tehran
Read the Original
This page is a summary of: Adaptive rate-based congestion control with weighted fairness through multi-loop gradient projection internal model controller, IET Control Theory and Applications, December 2015, the Institution of Engineering and Technology (the IET),
DOI: 10.1049/iet-cta.2015.0057.
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