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2009年アジア太平洋信号情報処理連合学会アニュアルサミット・国際会議  >

Channel-Aware Reservation-Based MAC Protocol for Cognitive Radio Networks

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タイトル: Channel-Aware Reservation-Based MAC Protocol for Cognitive Radio Networks
著者: Wang, Shu-Hsien 著作を一覧する
Hong, Y.-W. Peter 著作を一覧する
発行日: 2009年10月 4日
出版者: Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference, International Organizing Committee
誌名: Proceedings : APSIPA ASC 2009 : Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference
開始ページ: 610
終了ページ: 618
抄録: A channel-aware reservation-based MAC protocol for cognitive radio networks (CRNs) is proposed in this work. The proposed scheme allows secondary users (SUs) to send out reservation requests at the beginning of each time slot in a distributed fashion according to the sensing outcomes and their local channel state information (CSI). A channel-aware splitting algorithm is used to resolve the collision between the reservation requests of different SUs in a way such that the transmission time slot is always assigned to the SU with the best link quality. By exploiting multiuser diversity with the proposed scheme, we show that significant improvements in throughput can be observed. Furthermore, by modeling the presence and absence of the primary users (PUs) using a continuous time Markov chain, the spectrum sensing error and the reliability of the sensing outcomes across time are considered when designing the MAC policy. The effect of the data transmission and the spectrum sensing periods on the system throughput is studied via numerical simulations.
記述: APSIPA ASC 2009: Asia-Pacific Signal and Information Processing Association, 2009 Annual Summit and Conference. 4-7 October 2009. Sapporo, Japan. Oral session: Cooperative and Cognitive Radio Communications (6 October 2009).
資料タイプ: proceedings
URI: http://hdl.handle.net/2115/39771
出現コレクション:2009年アジア太平洋信号情報処理連合学会アニュアルサミット・国際会議 (2009 APSIPA Annual Summit and Conference)

 

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