earticle

영어

This paper proposes a fuzzy logic control based dynamic channel allocation (DCA) to ECMA-368 based WiMedia UWB networks, which aims to support mixed high-quality video traffic and shipboard control data traffic with high reliability and priority as well. The DCA method applied in this paper is to flexibly vary the portions of time slots of either the prioritized contention access (PCA) or the distributed reservation protocol (DRP), according to traffic condition and priority. Furthermore, the proposed DCA with the fuzzy logic control algorithm can intelligently divide the portion of time slots and allocate channels to both PCA and DRP, resulting in support of both HD-video stream services and shipboard instrument control data. It is shown that the proposed fuzzy logic controlled DCA with WiMedia UWB MAC protocol can provide reliable mixed video and shipboard control data traffic as well, and it can provide better performance of the aggregated throughput than that of without fuzzy logic control algorithm.