NDLI: A MAC Protocol with Directional Antennas for Deafness Avoidance in Ad Hoc Networks

Content Provider	IEEE Xplore Digital Library
Author	Takata, M. Bandai, M. Watanabe, T.
Copyright Year	2007
Description	Author affiliation: Shizuoka Univ., Shizuoka (Takata, M.; Bandai, M.; Watanabe, T.)
Abstract	Directional antennas are expected to provide significant improvements over omni-directional antennas in wireless ad hoc networks. Directional MAC protocols, however, introduce new kinds of problems arising from directivity. One major problem is deafness, caused by a lack of state information from neighbor nodes (i.e., idle or busy). This paper proposes DMAC/DA (Directional MAC with Deafness Avoidance) to overcome the deafness problem. In DMAC/DA, WTS (Wait To Send) frames are transmitted by the transmitter and the receiver after the successful exchange of directional RTS (Request To Send) and CTS (Clear To Send) to notify the on-going communication to potential transmitters that may experience deafness. Furthermore, DMAC/DA is enhanced by the next packet notification to distinguish transmitters from neighbors. We evaluate our protocol through extensive simulation study with different values of parameters such as the number of flows, data size and beamwidth. The experimental results show that DMAC/DA outperforms existing directional MAC protocols, such as DMAC (Directional MAC) and MDA (MAC protocol for Directional Antennas), in terms of throughput, RTS failure ratio, and control overhead.
Starting Page	620
Ending Page	625
File Size	174270
Page Count	6
File Format	PDF
ISBN	9781424410422
DOI	10.1109/GLOCOM.2007.121
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-11-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Media Access Protocol Directional antennas Deafness Ad hoc networks Transmitters Peer to peer computing Directive antennas Mobile ad hoc networks Wireless application protocol Throughput
Content Type	Text
Resource Type	Article

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