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Advances in wireless communication technologies have enabled vehicles on a highway to communicate in order to share state information and provide drivers with potential collision warnings. This paper proposes a protocol to support such a vehicle collision warning system. By sharing vehicle state information, the protocol is able to predict potential collisions and deliver warning messages to address...
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...
Improving driver's safety has been an active research area in wireless communication. In particular, the vehicle cooperative collision avoidance (CCA) is one of the most important issues in safety applications. A variety of broadcast protocols has been proposed for vehicular network. However, there is only a few of them dedicatedly designed for the CCA system. In this paper, we propose a novel broadcast...
More than 23% of annual vehicle accidents are rear-end collisions, this gives an important test-case for enhanced collision avoidance approaches based on v2v wireless communications. V2V wireless network concern with the impact of a IEEE 802.11 based multi-hop MAC protocol that propagates an emergency warning message (EWM) down a platoon of cars on a highway. The design objective is to ensure reception...
Currently, the V2V (vehicle to vehicle) network relies on periodic broadcast to disseminate emergency warning messages (EWM) to locations beyond the transmission range of individual nodes. But along with it, there comes the problem of broadcast redundancy, which reduces the reliability and efficiency of the warning system. In this paper, by studying different broadcast strategy, a new efficient IEEE...
We derive analytical bounds for the maximum acceptable message delivery latency and the minimum required retransmission frequency of 802.11-based vehicle-to-vehicle (V2V) communication protocols for rear-end collision avoidance applications. Using a microscopic car-following model of highway traffic combined with a probabilistic two-ray ground propagation model of the V2V wireless channel, we numerically...
Safety is evergreen vital criteria for road traffic. We propose an infrastructureless solution based on contexts to increase safety of vehicle. Contexts characterize and track the moving environment of a vehicle. Here, environment means the vehiclepsilas own status like geographical position, break-controlpsilas functional status, driverpsilas status etc., and the status of neighboring vehicles. Contexts...
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