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Ad HoC Mobile Wireless netWorks
contention-free MAC schemes are more applicable to static networks
and/or networks with centralized control, this chapter focuses on con-
tention-based MAC schemes.
Another category depends on energy-efficient protocols at all layers
of the network model. Hence, MAC protocols that are power aware
are needed. Another class of MAC protocols uses directional anten-
nas. e advantage of this method is that the signals are transmitted
only in one direction. e nodes in other directions are therefore no
longer prone to interference or collision effects, and spatial reuse is
facilitated. Several MAC schemes have been proposed for unidirec-
tional links.
Users will demand some level of QoS from MANET, such as
end-to-end delay ...