System modeling and performance analysis of the power saving class type II in BWA networks

Shunfu Jin () and Wuyi Yue ()

Journal of Global Optimization, 2013, vol. 56, issue 4, 1375-1391

Abstract: For reducing the energy consumption of the Mobile Station in mobile Broadband Wireless Access networks, IEEE 802.16 offers three kinds of sleep mode operations called power saving classes type I, type II and type III. In order to investigate mathematically the inherent relationships between the performance measures and the system parameters, we propose in this paper a novel method for modeling the sleep mode with the power saving class type II in IEEE 802.16 and analyzing the performance of this sleep mode. Considering the attractive feature that some data frames can be transmitted during the listening state, we present a queueing model with two kinds of busy mechanisms to capture the working principle of the sleep mode operations with the power saving class type II. With the first and higher derivatives of the probability generating functions, we can give the averages and the standard deviations for the system performance using the diffusion approximation for the operating process of the system. We also propose methods for measuring the system performance in terms of the switching ratio, the energy saving ratio, and the average response time of data frames, as well as giving the expressions for these performance measures. Numerical results are provided with analysis and simulation to show the average performance measures, standard deviations and the cost function with different system loads. Moreover, we construct a cost function with the aim of determining the optimal time length of the sleep window to minimize the cost function. Copyright Springer Science+Business Media, LLC. 2013

Keywords: Mobile broadband wireless access system; IEEE 802.16; Power saving class type II; Multiple vacation queueing model; Sleep window; 68M20; 49K35 (search for similar items in EconPapers)
Date: 2013
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DOI: 10.1007/s10898-011-9839-2

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