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Practical ad hoc networks have unique challenges, such as constant
network topology changes, bandwidth-constrained connections and
diverse wireless signal fading scenarios. This book presents the
design and evaluation of novel and efficient control mechanisms for
channel access scheduling and topology control functions in ad hoc
networks. The work is based on the neighbor-aware contention
resolution (NCR) algorithm, which use only local neighborhood
information to achieve globally consistent decisions, thus
applicable to solve various control problems in ad hoc networks
that required high control overhead before. First, channel access
protocols based on NCR are presented for ad hoc networks with
omni-directional antennas, namely NAMA, LAMA, PAMA and HAMA, which
correspond to node-, link-, pair-wise- and hybrid-activation
multiple access protocols, respectively. Furthermore, the
collision-free channel access functions for ad hoc networks that
have unidirectional links or directional antennas are presented,
which were difficult if not impossible to achieve without NCR.
NCR-based topology management that constructs a backbone structure
in ad hoc networks is presented as well.
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