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Safety is the only way home. Broadcasting techniques have been applied widely to improve the traffic safety, especially pileup crash avoidance by sending the emergency messages to alert drivers; however, such application often suffers from the broadcast storm, hidden node, interference, and contention problem. In the paper a novel area-based broadcast protocol was proposed. Its relaying model running...
Vehicle Ad Hoc Networks (VANET) rely on frequent data exchange among vehicles to facilitate road safety, congestion control, route planning, etc. The objective of this paper is to introduce an adaptive power control method based on propagation and traffic modeling. Dual-slope pathloss and shadowing model is used to describe the power propagation. Statistical tests performed on 50289 traces extracted...
We characterize the unicast performance available to applications in infrastructureless vehicular ad hoc networks (VANETs) in terms of connection duration, packet delivery ratio, end-to-end delay, and jitter in both highway and urban VANET environments. The results show the existence of several stringent QoS constraints for unicast applications in infrastructureless VANETs.
Traffic congestion on major roadways costs our nation billions of dollars in lost earnings, wasted fuel consumption, injury and loss of human life. Providing motorists with real time roadway conditions is essential to mitigating traffic congestion. We propose a novel real-time messaging system that can be used to communicate imminent traffic conditions to motorists. Having such information can allow...
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