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題 名 | An Accurate Power Analysis Model Based on MAC Layer for the DCF of 802.11n |
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作 者 | Ting, Kuo-chang; Wang, Hwang-cheng; Tseng, Chih-cheng; Kuo, Fang-chang; Lai, Feipei; | 書刊名 | Journal of The Chinese Institute of Engineers |
卷 期 | 36:1 2013.01[民102.01] |
頁 次 | 頁17-26 |
專 輯 | Parallel and Distributed Processing with Applications |
分類號 | 448.6 |
關鍵詞 | WLAN; 802.11n; MAC efficiency; Energy cost; |
語 文 | 英文(English) |
英文摘要 | 802.11 Wireless Local Area Network (WLAN) technology is popular in power sensitive devices such as smart phones and personal digital assistants (PDAs). In this paper, we present an accurate power consumption model based on the Bianchi model and power measurement in PHY layer to predict the power consumption of 802.11n and MIMO mode of 802.11n. In this model, we calculate the total energy consumption by summing up several components: the idle listening energy consumed in the DIFS period and backoff stage, the energy consumed in transmitting a frame, the idle listening energy consumed in the SIFS turn-around time, the energy consumed in receiving an ACK frame from access point, and the energy consumed in collisions for one frame transmission. The results of our analysis and simulation are very close to each other and show that the energy consumed in idle listing dominates the total power consumption when the number of the active stations is large. The probability of successful transmission and MAC efficiency of 802.11n are also analyzed and simulated as a function of the number of active stations. Finally, the impact of imperfect channels on energy consumption and MAC efficiency is investigated. |
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