Lyes Khoukhi
ABSTRACT
This paper explores the use of fuzzy logic for threshold buffers management in wireless ad hoc networks. This exploration is useful first, because of the dynamic nature of buffer occupancy and congestion at a node; second, because of the uncertainty of information in wireless ad hoc networks due to network mobility. The notion of threshold is practical for discarding data packets and adapting the traffic service depending on the occupancy of buffers. The threshold function has a significant influence on the performance of networks in terms of both packets average delay and throughput. We propose a fuzzy logic approach for threshold selection named (FuzzyCCG) in order to enhance the control of congestion. FuzzyCCG was studied under different mobility, channel, and traffic conditions. The results of simulations confirm that the proposed model can achieve low and stable end-to-end delay under different network scalability and mobility conditions. FuzzyCCG promises to be an efficient tool for reducing the delay of multimedia applications in wireless ad hoc networks.
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Index Terms
- FuzzyCCG: a fuzzy logic QoS approach for congestiosn control in wireless ad hoc networks
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