Fuzzy logic congestion control in TCP/IP tandem networks

C. Chrysostomou, A. Pitsillides

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Citations (Scopus)


Network resource management and control is a complex problem that requires robust, possibly intelligent, control methodologies to obtain satisfactory performance. While many Active Queue Management (AQM) mechanisms have been introduced to assist the TCP congestion control, these require careful configuration of non-intuitive control parameters, and show weaknesses to detect and control congestion under dynamic traffic changes, and a slow response to regulate queues. Furthermore, there is also a need to evaluate thoroughly the performance of such mechanisms for tandem networks containing multiple congested routers. A new AQM scheme, Fuzzy Explicit Marking (FEM) has recently been proposed to provide congestion control in TCP/IP best-effort networks using a fuzzy logic control approach. We present the control approach followed by the FEM controller, and evaluate the performance of FEM and a number of representative AQM schemes (A-RED, PI and REM) in a tandem network. An extensive simulation study over a wide range of traffic conditions shows that the FEM controller outperforms the other schemes in terms of queue fluctuations and delays, packets losses, link utilization, and speed of response to regulate queues.

Original languageEnglish
Title of host publicationProceedings - 11th IEEE Symposium on Computers and Communications, ISCC 2006
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages6
ISBN (Print)0769525881, 9780769525884
Publication statusPublished - 2006
Externally publishedYes
Event11th IEEE Symposium on Computers and Communications, ISCC 2006 - Cagliari, Sardinia, Italy
Duration: 26 Jun 200629 Jun 2006

Publication series

NameProceedings - IEEE Symposium on Computers and Communications
ISSN (Print)1530-1346


Conference11th IEEE Symposium on Computers and Communications, ISCC 2006
CityCagliari, Sardinia

ASJC Scopus subject areas

  • Software
  • Signal Processing
  • General Mathematics
  • Computer Science Applications
  • Computer Networks and Communications


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