Performance analysis and evaluation for power saving class type III in IEEE 802.16e network
Performance analysis and evaluation for power saving class type III in IEEE 802.16e network
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DOI：
10.3934/jimo.2010.6.691
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发表时间：
2010-06
影响因子：
1.3
通讯作者：
Shunfu Jin;Wuyi Yue
中科院分区：
文献类型：
--
作者：
Shunfu Jin;Wuyi Yue
In this paper, we present an enhanced power saving class (PSC) type III by introducing a sleep-delay mechanism into the conventional PSC type III in the IEEE 802.16e network. Two multiple vacation queueing models: without sleep-delay and with sleep-delay, are built to capture the working principles of the conventional PSC type III and the enhanced PSC type III, respectively. Then, using the boundary state variable theory method, we analyze these queueing models and give the performance measures in terms of the switch ratio, the power saving ratio, the average response time and the system utility for both the conventional and the enhanced power saving schemes. Next, numerical results are given to demonstrate the dependency relationships between the performance measures and the sleep window size. Moreover, we compare the performance of the both systems without sleep-delay (the conventional PSC type III) and with sleep-delay (the enhanced PSC type III) to validate the effect of the sleep-delay mechanism in the enhanced PSC type III proposed in this paper. Finally, we also construct a cost function to determine the optimal time length of the sleep-delay timer for minimizing the cost function.
