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    题名: A Link-Adapted Fragment and Rate Matching (FaRM) MAC Protocol for Wireless LANs
    作者: Shih, Kuei-Ping;Chou, Chien-Min;Li, Chun-Chih;Cheng, Li-Jie
    贡献者: 淡江大學資訊工程學系暨研究所
    关键词: FSMC;finite state Markov chain;fragmentation;IEEE 80211;MAC protocols;medium access control;multirate;wireless LANs;local area networks;WLANs;fragment matching;rate matching;channel quality;network throughput;signal–to–noise ratio;SNR;frame exchanges;transmission rate;simulation
    日期: 2014-08-01
    上传时间: 2014-03-14 15:41:12 (UTC+8)
    摘要: The paper proposes a fragment and rate matching (FaRM) MAC protocol for wireless LANs to resist the frequent change of channel quality so as to increase network throughput. In wireless transmissions, channel quality varies with time. The FaRM protocol estimates channel quality by detecting current SNR through frame exchanges. A Finite State Markov Chain (FSMC) is utilized to predict the variation in the channel conditions during the next frame transmission. According to the results obtained from the FSMC, the FaRM protocol enables the sender to dynamically select an appropriate transmission rate as well as an acceptable fragment length to transmit, such that the reliability and time of this transmission can be improved. As a result, the FaRM protocol can not only obtain better network throughput through the selection of the high transmission rate, but it can also increase the successful transmission rate by the determination of a suitable fragment length. Simulation results show that the FaRM protocol has better performance, higher transmission reliability, and lower transmission delay by fragment and rate matching in comparison to the related work.
    關聯: International Journal of Ad Hoc and Ubiquitous Computing 17(1), pp.1-17
    DOI: 10.1504/IJAHUC.2014.065155
    显示于类别:[資訊工程學系暨研究所] 期刊論文

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