TELKOMNIKA Telecommunication Computing Electronics and Control
Design and simulation an optimal enhanced PI controller for congestion avoidance in TCP/AQM system

TELKOMNIKA Telecommunication Computing Electronics and Control
Design and simulation an optimal enhanced PI controller for congestion avoidance in TCP/AQM system

AQM
Computer network
Congestion control
NLPI controller
SOA

In this paper, snake optimization algorithm (SOA) is used to find the optimal
gains of an enhanced controller for controlling congestion problem in
computer networks. M-file and Simulink platform is adopted to evaluate the
response of the active queue management (AQM) system, a comparison with
two classical controllers is done, all tuned gains of controllers are obtained
using SOA method and the fitness function chose to monitor the system
performance is the integral time absolute error (ITAE). Transient analysis and
robust analysis is used to show the proposed controller performance, two
robustness tests are applied to the AQM system, one is done by varying the size
of queue value in different period and the other test is done by changing the
number of transmission control protocol (TCP) sessions with a value of ± 20%
from its original value. The simulation results reflect a stable and robust
behavior and best performance is appeared clearly to achieve the desired
queue size without any noise or any transmission problems.

Yousra Abd Mohammed, Layla H. Abood, Nahida Naji Kadhim

http://telkomnika.uad.ac.id

Apr 30, 2023

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