教師資料查詢 | 類別: 會議論文 | 教師: 張志勇 Chih-yung Chang (瀏覽個人網頁)

標題:H-MAC---A Channel-Hopping Based Multi-Channel MAC Protocol for 802.11 Wireless LANs
學年
學期
發表日期2008/11/13
作品名稱H-MAC---A Channel-Hopping Based Multi-Channel MAC Protocol for 802.11 Wireless LANs
作品名稱(其他語言)
著者Chang, Chih-Yung; Hwang, Lain-Jinn; Lu, Yun-Jung; Chen, Yu-Chieh
作品所屬單位淡江大學資訊工程學系
出版者
會議名稱The 2008 International Computer Symposium(ICS 2008)
會議地點臺北縣, 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 not only exploits the bandwidth utilization but also reduces the degree of contentions. However, each station is only equipped with a single antenna, resulting in the situation that station pairs staying on data channels can not maintain the channel usage information which only can be obtained from the control channel. The unavailability of channel utilization can further raise the channel collision problem. This study proposes an efficient 802.11 Multi-Channel MAC protocol, called H-MAC, aiming at maximizing the bandwidth utilization. The proposed protocol adopts the channel hopping sequence (CHS) mechanism to resolve the channel collision problem and reduce the message exchange overhead for switching channels. The proposed H-MAC also exploits the opportunities of spatial reuse, maintains the fairness, and possesses several characteristics including low cache overhead, fewer control packets and collision avoidance. Simulation study shows that the proposed H-MAC protocol largely improve the bandwidth utilization, delay time and throughput while maintaining fairness.
關鍵字IEEE 802.11;Medium access control (MAC);Multi-channel;Mobile Ad hoc NETwork (MANET);Communication protocol
語言英文
收錄於
會議性質國際
校內研討會地點淡水校園
研討會時間20081113~20081113
通訊作者
國別中華民國
公開徵稿Y
出版型式紙本
出處Proceedings of the 2008 International Computer Symposium (ICS 2008)6頁
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