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Intelligent leaky bucket algorithms for sustainable-cell-rate usage parameter control in ATM networks

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4 Author(s)
Chung-Ju Chang ; Dept. of Commun. Eng., Nat. Chiao-Tung Univ., Hsinchu, Taiwan ; Chung-Hsun Yu ; Chih-Sheng Chang ; Li-Fong Lin

In this paper, we propose two intelligent leaky bucket algorithms for sustainable-cell-rate usage parameter control of multimedia transmission in asynchronous transfer mode networks. One is the fuzzy leaky bucket algorithm, in which a fuzzy increment controller (FIC) is incorporated with the conventional leaky bucket algorithm; the other is the neural fuzzy leaky bucket algorithm, where a neural fuzzy increment controller (NFIC) is added with the conventional leaky bucket algorithm. Both the FIC and the NFIC properly choose the long-term mean cell rate and the short-term mean cell rate as input variables to intelligently determine the increment value. Simulation results show that both intelligent leaky bucket algorithms have significantly outperformed the conventional leaky bucket algorithm, by responding about 160% faster when taking control actions against a nonconforming connection while reducing as much as 50% of the queueing delay experienced by a conforming connection. In addition, the neural fuzzy leaky bucket algorithm outperforms the fuzzy leaky bucket algorithm, in aspects of three performance measures such as selectivity, responsiveness, and queueing delay, especially when the traffic flow is bursty, dynamic, and nonstationary.

Published in:

Multimedia, IEEE Transactions on  (Volume:6 ,  Issue: 5 )

Date of Publication:

Oct. 2004

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