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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 陳健輝 | |
dc.contributor.author | Yen-Chang Chen | en |
dc.contributor.author | 陳彥璋 | zh_TW |
dc.date.accessioned | 2021-06-17T00:15:37Z | - |
dc.date.available | 2012-07-18 | |
dc.date.copyright | 2012-07-18 | |
dc.date.issued | 2012 | |
dc.date.submitted | 2012-07-04 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/65929 | - |
dc.description.abstract | 近年來,IEEE 802.11無線區域網路已廣泛發展,且越來越多的行動裝置配備無線網路介面,然而行動裝置的電池僅能提供有限的電力,於是以好的設計達到高能源效率,成為了無線區域網路研究中的一項重要議題。
以IEEE 802.11基礎架構無線區域網路為背景,我們提出一套排程為基礎的高能源效率媒介存取控制層協定,以低負載量的多重輪詢機制結合電源管理。我們主要的構想,是將所有的資料傳輸做準確的排程,讓無線站台可以在閒置的時候進入睡眠狀態。 從模擬結果來分析,驗證了我們的設計在能源效率方面,勝過IEEE 802.11的省電模式以及其他人的設計,即使在平均上傳延遲時間以及飽和吞吐量兩方面,付出了些微的代價。我們的設計能夠節省如此大量的能源,原因在於良好的喚醒時間排程,可以減輕偷聽和碰撞問題。 | zh_TW |
dc.description.abstract | In recent years, IEEE 802.11 wireless local area networks (WLANs) have been widely deployed, and more and more mobile devices have built-in WLAN interfaces. However, the mobile devices are powered by batteries with limited energy. Thus, the good design of energy efficiency becomes one of the most important issues in WLANs.
Based on IEEE 802.11 infrastructure WLANs, we propose a schedule-Based energy-efficient media access control (MAC) protocol which employs multipolling mechanism to combine power management strategy with low overhead. The main idea is to derive exact schedules of data transmissions and put wireless stations into the doze state whenever they are inactive. From the simulation results, we demonstrate that our proposed protocol presents a better performance than IEEE 802.11 power saving mode and other protocols in energy efficiency with unapparent losses of average uplink delay and saturated throughput as tradeoffs. The significant saving of energy is a consequence of alleviating the overhearing and collision problems with well scheduled wake-up times for STAs. | en |
dc.description.provenance | Made available in DSpace on 2021-06-17T00:15:37Z (GMT). No. of bitstreams: 1 ntu-101-R99922041-1.pdf: 4832457 bytes, checksum: 898622643c9b48e33f7456e4321b3d92 (MD5) Previous issue date: 2012 | en |
dc.description.tableofcontents | CONTENTS.................................................iii
LIST OF FIGURES............................................v LIST OF TABLES...........................................vii Chapter 1 Introduction...................................1 Chapter 2 Background and Related Work....................5 2.1 IEEE 802.11 MAC Protocols.........................7 2.1.1 Distributed Coordination Function (DCF)......7 2.1.2 Point Coordination Function (PCF)...........10 2.1.3 Power Saving Mode (PSM).....................12 2.2 Multipolling.....................................14 2.2.1 CF-Multipoll................................14 2.2.2 CP-Multipoll................................16 2.2.3 TS-Multipoll................................19 2.2.4 EE-Multipoll................................21 Chapter 3 A Schedule-Based Energy-Efficient Multipolling MAC Protocol..............................................26 3.1 Assumptions......................................27 3.2 Mechanism Design....................................28 3.2.1 Downlink Phase and Polling Phase...............31 3.2.2 Uplink Phase...................................36 3.3 Some Issues......................................38 Chapter 4 Analysis of Energy Efficiency.................42 Chapter 5 Simulation Result.............................50 5.1 Average Downlink Delay...........................55 5.2 Average Uplink Delay.............................56 5.3 Energy Efficiency................................58 5.4 Saturated Throughput.............................60 Chapter 6 Conclusion....................................62 REFERENCES................................................64 | |
dc.language.iso | en | |
dc.title | 在無線區域網路的媒介存取控制層協定中以排程為基礎的多重輪詢機制達到高能源效率 | zh_TW |
dc.title | A Schedule-Based Energy-Efficient Multipolling MAC Protocol for Wireless LANs | en |
dc.type | Thesis | |
dc.date.schoolyear | 100-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 吳曉光,周承復,蔡子傑,陳伶志 | |
dc.subject.keyword | IEEE 802.11,無線區域網路,媒介存取控制層協定,多重輪詢,排程,高能源效率, | zh_TW |
dc.subject.keyword | IEEE 802.11,WLAN,MAC protocol,multipolling,scheduling,energy efficiency, | en |
dc.relation.page | 70 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2012-07-04 | |
dc.contributor.author-college | 電機資訊學院 | zh_TW |
dc.contributor.author-dept | 資訊工程學研究所 | zh_TW |
顯示於系所單位: | 資訊工程學系 |
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