VEHICULAR AD-HOC NETWORK
Vehicular ad hoc networks (VANETs) are a subclass of
MANETs that is expected to have a key role in the intelligent transportation
systems of the future. VANETs provide vehicle-to-vehicle and vehicle-to-roadside
communication in order to support safety and comfort applications. Despite
being a subclass of MANETs, VANETs have fundamentally different behavior. This
paper presents a scheme consisting of a media access control protocol and a clusteringalgorithm designed to reduce interferences in VANETs. Our scheme, which is
intended for safety applications in highway environments, employs dynamic
multihop clustering, allows better utilization of network resources, and improves
network performance.
Vehicular
ad hoc networks (VANETs) are a class of wireless networks that
is expected to have a key role in the intelligent transportation systems of the
future. Already in recent years, the U.S. Federal Communications Commission and
the European Telecommunications Standards Institute have allocated spectrum for
such systems, and an IEEE communications standard for them is under
development. VANETs provide vehicle-to-vehicle and vehicle-to-roadside communication
in order to support two main types of applications: safety applications such as
road-hazard notification and sending emergency messages from an accident site,
and comfort applications such as advertisements, parking space availability,
traffic estimation, and traffic-jam notifications.
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