A MAC protocol for full exploitation of Directional Antennas in Ad-hoc Wireless Networks
by Thanasis Korakis, Gentian Jakllari, Leandros Tassiulas
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| url: | http://portal.acm.org/citation.cfm?id=778428 | | abstract: | Directional antennas in ad hoc networks offer many benefits
compared with classical omnidirectional antennas. The most
important include significant increase of spatial reuse, coverage
range and subsequently network capacity as a whole. On the other
hand, the use of directional antennas requires new approach in the
design of a MAC protocol to fully exploit these benefits.
Unfortunately, directional transmissions increase the hidden
terminal problem, the problem of deafness and the problem of
determination of neighbors’ location. In this paper we propose a
new MAC protocol that deals effectively with these problems
while it exploits in an efficient way the advantages of the
directional antennas. We evaluate our work through simulation
study. Numerical results show that our protocol offers significant
improvement compared to the performance of omni transmissions. |
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