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A Novel Adaptive Fuzzy Logic Controller (A-FLC) to Reduce Retransmission and Service Roundtrip Time for Logical TCP Channels over the Internet

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Embedded and Ubiquitous Computing (EUC 2004)

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 3207))

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Abstract

The novel Adaptive Fuzzy Logic Controller (A-FLC) proposed in this paper is created from the extant FLC model by adding the capability that allows it to auto-tune the range-thresholds of its “don’t care” fuzzy regions. The aim is to “squeeze” the range-threshold to achieve two purposes: a) to make the controller more responsive, and b) to reduce overshoot/undershoot to yield a less oscillatory control process. The range-threshold reduction process works with two parameters: “gradient threshold” and “given percentage”. The former decides when to begin the reduction process and the latter decides by how much. The preliminary results with the Java-based A-FLC prototype over the Internet indicate that the auto-tuning capability in the novel controller indeed makes the buffer overflow management more responsive, less oscillatory, and more accurate than the FLC predecessor.

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© 2004 Springer-Verlag Berlin Heidelberg

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Lin, W.W.K., Wong, A.K.Y., Dillon, T.S. (2004). A Novel Adaptive Fuzzy Logic Controller (A-FLC) to Reduce Retransmission and Service Roundtrip Time for Logical TCP Channels over the Internet. In: Yang, L.T., Guo, M., Gao, G.R., Jha, N.K. (eds) Embedded and Ubiquitous Computing. EUC 2004. Lecture Notes in Computer Science, vol 3207. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-30121-9_90

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  • DOI: https://doi.org/10.1007/978-3-540-30121-9_90

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-22906-3

  • Online ISBN: 978-3-540-30121-9

  • eBook Packages: Springer Book Archive

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