An Efficient Multi-Channel MAC Protocol with Directional Antenna for 802.11 Wireless LAN
學年 93
學期 2
發表日期 2005-03-31
作品名稱 An Efficient Multi-Channel MAC Protocol with Directional Antenna for 802.11 Wireless LAN
作品名稱（其他語言）
著者 Chang, Chih-Yung; Sun, Hao-Chun; Hsieh, Chen-Chi; Lee, Shih-Chieh
作品所屬單位 淡江大學資訊工程學系
出版者
會議名稱 第十一屆行動計算研討會暨國科會行動計算計劃研究成果發表會=The 11th Mobile Computing Workshop
會議地點 桃園縣, 臺灣
摘要 IEEE 802.11 provides a contention based MAC protocol for single channel wireless environment. Extending IEEE 802.11 to a multi-channel environment will not only exploit the bandwidth utilization but also reduce the degree of contentions. Involving directional antenna in designing multi-channel MAC protocol additionally increases the spatial reuse, allowing more communications proceeding in parallel. This paper proposes an efficient 802.11 Multi-Channel MAC protocol with Directional Antenna (MCDA). Since each station is only equipped with a single antenna, communicating pairs that progress their communications on data channels will unable to maintain the channel usage information which is only obtained from the control channel, raising the channel collision problem. The proposed protocol adopts mechanism of channel switch sequence (CSS) to resolve the channel collision problem and reduce the overhead in message exchange for switching channel. According to the state management, MCDA then controls directional antenna transmitting data on a selected channel to exploit the opportunities of spatial reuse and maintain the fairness among communicating pairs.Simulation results show that the proposed MCDA protocol can largely improve the bandwidth utilization and throughput while the fairness could be maintained.
關鍵字
語言 en
收錄於
會議性質 國內
校內研討會地點
研討會時間 20050331~20050331
通訊作者
國別 TWN
公開徵稿 Y
出版型式 紙本
出處 第十一屆行動計算研討會暨國科會行動計算計劃研究成果發表會論文集=Proceedings of the 11th Mobile Computing Workshop，頁8
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