Title: Design and analysis of a stable AQM controller for network congestion control

Authors: Sukant Kishoro Bisoy; Prasant Kumar Pattnaik; Bibudhendu Pati; Chhabi Rani Panigrahi

Addresses: Department of Computer Science and Engineering, Siksha 'O' Anusandhan University, Bhubaneswar, Odisha-751030, India ' School of Computer Engineering, KIIT University, Patia, Bhubaneswar, Odisha-751024, India ' Department of Computer Science and Engineering, C.V. Raman College of Engineering, Bidya Nagar, Mahura, Janla, Bhubaneswar, Odisha-751024, India ' Department of Computer Science and Engineering, C.V. Raman College of Engineering, Bidya Nagar, Mahura, Janla, Bhubaneswar, Odisha-751024, India

Abstract: In this work, a stable active queue management (AQM) controller named SAQM is proposed to control the congestion in the network and improve the stability of the queue length at internet router. It is an integrated rate and queue-based AQM technique which is stable and robust under dynamic environment where a number of TCP connections, bottleneck bandwidth, round trip time (RTT), and target queue length keeps changing. The proposed AQM controller is implemented in NS2 network simulator. In this paper, the control theory is used for stability analysis of TCP/SAQM system and finally validated through MATLAB Simulink model. The simulation results show that the SAQM outperforms other existing AQM controllers in terms of achieving queue stability, less oscillatory with faster response and at the same time it responds quickly to traffic change.

Keywords: congestion control; active queue management; AQM; control theory; stability; robust; oscillation.

DOI: 10.1504/IJCNDS.2018.089762

International Journal of Communication Networks and Distributed Systems, 2018 Vol.20 No.2, pp.143 - 167

Received: 02 Jul 2016
Accepted: 29 Jan 2017
Published online: 09 Feb 2018 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article