Browsing by Author "Fan, YL"

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Adaptive scheduler algorithm for multi-criterion designs in B3G wireless systems
(2004)
Fan, YL
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Huang, CY
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電機學院
;
College of Electrical and Computer Engineering
In this paper, multi-criterion scheduler algorithms are discussed. An adaptive scheduler control algorithm is provided to explore the tradeoff between the system throughput and different user fairness in both the average number of assigned slots and average transmission rates. We will show even though it is difficult to achieve an unique optimum point to satisfy all design criteria, there exists an operator-defined optimality if the priorities of different design criteria are chosen. All performance will be quantified based on 1xEV-DO technologies.
Timer based scheduling control algorithm in WLAN for real-time services
(2005)
Fan, YL
;
Huang, CY
;
Hong, YR
;
電子工程學系及電子研究所
;
Department of Electronics Engineering and Institute of Electronics
With the increasing demands on real-time services in WLAN systems, it is critical to make sure whether the controls provided in WLAN are sufficient to ensure the required QoS. In this study, besides the EDCF and HCF defined by the IEEE 802.11e, an enhanced timer-based scheduling control algorithm is proposed to effectively manage the delay budget. A simulation platform is developed to quantify the QoS performance and to provide a frame work for developing new QoS control algorithms. The comparison among the contention-based channel access and the controlled channel access which includes both the simple algorithm and the proposed algorithm are also evaluated.