講演抄録/キーワード |
講演名 |
2005-11-18 11:15
Interaction between Ad Hoc Forwarding and The 802.11 MAC in Ad Hoc Mobile Networks using Directional Antenna ○Tetsuro Ueda・Keizo Sugiyama(KDDI R&D Labs.)・Hisato Iwai・Sadao Obana(ATR)・Siuli Roy・Sanjay Chatterjee・Somprakash Bandyopadhyay(IIMC) |
抄録 |
(和) |
(まだ登録されていません) |
(英) |
A Direction and Communication-Aware MAC (DCA-MAC) scheme is proposed, able to improve the performance of the multi-rate IEEE802.11 DCF (Distributed Coordination Function) from AWGN to fading environments. The key idea is to transmit not only RTS but also DATA packets with omnidirectional beam that can inform communication status to the up-link-next-hop. omni-directional RTS/DATA can be issued without disturbing the neighbors’ on-going communication, by the utilization of DNAV(Directional Network Allocation Vector). In addition, the directional antenna gain is controlled adequately according to the number of hops, and keeps the stable performances under any condition. Using QualNet network simulator, we have evaluated the effectiveness of the proposed scheme. |
キーワード |
(和) |
/ / / / / / / |
(英) |
Wireless ad hoc networks / Directional antenna / Medium Access Control / IEEE802.11 / / / / |
文献情報 |
信学技報, vol. 105, no. 405, NS2005-124, pp. 67-70, 2005年11月. |
資料番号 |
NS2005-124 |
発行日 |
2005-11-10 (NS) |
ISSN |
Print edition: ISSN 0913-5685 |
PDFダウンロード |
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