droa28/aqm-simulations

Numerical simulations of AQM Schemes using Matlab-Simulink and NS-3. Cite as ....On the validity of numerical simulations for control-theoretic AQM schemes in computer networks.... see README section.

AQM Simulations

Numerical simulations of Active Queue Management (AQM) schemes using MATLAB-Simulink and NS-3.

• This work addresses the misconceptions regarding usage of the control-theoretic AQM feedback structure. This work has been published in a journal, see reference below.
• Our simulation files can be used to verify and validate the numerical time-domain and event-domain simulations of existing AQM schemes using the MATLAB-Simulink platform and the NS-3 platform respectively.
• The simulation results are easily reproducible, and new AQM control algorithms can easily be compared to existing AQM schemes by using the simulation files in this repository.

MATLAB-Simulink Simulation Files

PID_JNLM_x1 : compares between Jacobi Model and Misra Model.
PID_NLM_x2a : compares between different controllers using Misra Model.
PID_NLM_x2b : same as PID_NLM_x2a except that the PID controller block is replaced by the Kahe Controller.
PID_NLM_x2c : same as PID_NLM_x2a except that the PID controller block uses du/dt block.
AQM_param : script file for network parameters and P(I)D controller parameters to be used by Simulink models.

NS-3 Simulation Files (NS-3.30.1 Release)

wscript : to be placed in "\src\traffic-control" folder.
pid-script.cc : simulation script file, to be placed in "\scratch" folder.
pid-queue-disc.h : header file for queue disc, to be placed in "\src\traffic-control\model" folder.
pid-queue-disc.cc : class file for queue disc, to be placed in "\src\traffic-control\model" folder.
tcp-tx-buffer.cc : this file has a "TcpTxBuffer::AddRenoSack (void)" patch for "assert error when sack is disabled", to be placed in "\src\internet\model" folder.
tcp-congestion-ops.cc : the Slow-Start is disabled in ‘TcpNewReno::IncreaseWindow(.)’ by replacing ‘SlowStart(.)’ with ‘CongestionAvoidance(.)’. This file is to be placed in "\src\internet\model" folder.

If part of this work is used, please cite as below

R. Olusegun Alli-Oke, On the validity of numerical simulations for control-theoretic AQM schemes in computer networks, Mathematics and Computers in Simulation, vol. 193, pp. 466-480, 2022. GitHub repository: https://github.com/droa28/AQM-Simulations (Nov. 2021).

Contact Information

I can be reached at [email protected], [email protected], [email protected]