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GLOBECOM
2007
IEEE

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

9 years 4 months ago
A MAC Protocol with Directional Antennas for Deafness Avoidance in Ad Hoc Networks
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 experimenta...
Masanori Takata, Masaki Bandai, Takashi Watanabe
Added 02 Jun 2010
Updated 02 Jun 2010
Type Conference
Year 2007
Where GLOBECOM
Authors Masanori Takata, Masaki Bandai, Takashi Watanabe
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