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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/73134

    Title: A dynamic rate adaptation with fragmentation MAC protocol against channel variation for wireless LANs
    Authors: 石貴平;Shih, kuei-ping;Wang, san-yuan;Chou, Chien-Min;Cheng, Li-Jie
    Contributors: 淡江大學資訊工程學系
    Date: 2008-07
    Issue Date: 2011-10-24 11:32:36 (UTC+8)
    Abstract: The paper proposes a fragment and rate matching (FaRM) MAC protocol for wireless local area networks (LANs) to resist the frequent changing of channel quality and increase the network throughput. In wireless environments, channel quality varies with time. FaRM dynamically detects the current SNR to estimate the channel quality through the control frame exchanges. A Finite State Markov Chain (FSMC) is adopted to predict the variation of the channel condition. According to the results generated from FSMC, FaRM enables a station to select an appropriate transmission rate as well as an acceptable fragment length dynamically to transmit in order to both increase the reliability and shorten the channel access time of the transmission. The simulation results show FaRM has better performance, higher transmission reliability, and lower transmission delay time by fragment and rate matching.
    Relation: Computers and Communications, 2008. ISCC 2008. IEEE Symposium on, pp.143-148
    DOI: 10.1109/ISCC.2008.4625732
    Appears in Collections:[Graduate Institute & Department of Computer Science and Information Engineering] Proceeding

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