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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/8795

    Title: 在隨意型無線網路中以Quorum為基礎的媒體存取控制層能量保存協定;Quorum-Based Energy Conserving MAC Protocols for Wireless Ad Hoc Networks
    Authors: 周易成;I-Cheng Chou
    Contributors: 資訊工程研究所
    Keywords: 隨意型無線網路;能量保存;power saving;quorum;IEEE 802.11;mobile ad hoc network (MANET)
    Date: 2003-06-19
    Issue Date: 2009-09-22 11:34:56 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 在隨意型無線網路(Mobile Ad hoc Network,MANET)中,無線網路的壽命依賴於行動端點的電池能量,所以能量保存是一個很重要的課題,因此我們期望設計出一個可相容於現今的IEEE 802.11 協定,並且能有效節省耗電量的新協定。在IEEE 802.11 DCF 模式下的能量保存模式(Power Saving Mode)中,每個行動端點必須週期性地醒來,以判斷是否有傳送或接收的動作產生。然而這種方式需要週期性醒來,因此省電效率並不是很好。本篇論文提出一個嶄新並更加省電的協定,此方法可以增加電池能量的耐久性,進而延長行動端點與網路的壽命,同時也相容於現今的IEEE 802.11 協定。此協定是藉由Quorum 的特性,使每個行動端點不需要在每個週期醒來,但仍然可以經由彼此交集而達到互相通訊的效果,並且延長連續睡眠時間以達到省電的效果。模擬的結果指出這個新的能量保存協定的延遲時間會較長,但可以延長整個MANET 的網路壽命。 The lifetime of a mobile ad hoc network (MANET) depends on the durability of the battery resource of mobile hosts. In IEEE 802.11 Power Saving Mode, a mobile host must wake up in every beacon interval to check if it needs to remain awake for that particular beacon interval. Such a scheme fails to adjust a mobile host’s sleep duration according to its traffic thereby reducing its power efficiency. This paper presents the new MAC protocols for power saving in a MANET. The essence of these protocols is a quorum-based sleep/wake-up mechanism which conserves energy by allowing mobile hosts to sleep more than one beacon interval, if they involve a few transmissions. The proposed protocols are simple and compatible to the IEEE 802.11 standard. Simulation results show that our protocols conserve more energy and extend the lifetime of a MANET without increasing packet loss ratio.
    Appears in Collections:[資訊工程研究所] 博碩士論文

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