Аннотация
The intelligent transportation systems (ITS) use advanced
communications and control technologies to improve current
transportation systems. To achieve many ITS applications, the ability to
exchange messages between vehicles is necessary. This is generally
required as inter vehicle communication (IVC). IVC can be considered as
a special case of ad hoc networks, where nodes only move along
predefined road paths. We propose new broadcast protocols that make use
of global positioning system (GPS) information to enhance the
performance of broadcast service in IVC. The ability to efficiently
broadcast messages is necessary for any communications in IVC (e.g,
updating routing tables, etc). We propose two algorithms that
effectively reduce the number of re-broadcast messages without affecting
the number of hosts (vehicles) that receive the broadcast. The
simulation results show up to several hundred percentage of bandwidth
utilization improvement can be achieved by our proposed broadcast
protocols
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