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A key feature of inter-vehicle communications is their ability of supporting cooperative safety-critical applications (CSCA) which prevent a vehicle from colliding with the others. In this paper, we present a crosslayer beaconing design for CSCA that keeps the tracking uncertainty below a fixed threshold, provided that a receiving vehicle has at least one of the K latest beacons of the sending vehicle...
Accurate vehicle tracking is a principal requirement of vehicle safety critical applications. In vehicle-to-vehicle communication, vehicle tracking is achieved by broadcasting beacon containing state information of the sending vehicle in dedicated short range communication (DSRC) channel. Frequent beacon broadcasting can enhance vehicle tracking accuracy, but also lead to channel congestion in high...
In vehicular localization, there is an increasing interest in the fusion algorithm between the relative local sensing estimate (LSE) of ranging sensors and the absolute remote sensing estimate (RSE) of a GPS receiver. A challenging issues of the fusion algorithm is to find a matched pair corresponding to the same vehicle between two sets of estimates. To aim this, we present a greedy data matching...
A key feature of the vehicular ad-hoc networks (VANETs) is to broadcast the beacon message containing the position, speed, heading, etc. However, the fixed-rate scheme in the current standards may incur too large traffic load to the DSRC channel leading to a significant degradation of the network performance. In this paper, we present a new beacon rate control algorithm that succeeds in tracking the...
In vehicular safety applications, a vehicular positioning algorithm plays a crucial role in preventing road accidents through the perception of a dangerous situation in advance. However, most of vehicular positioning devices, e.g. a low-cost GPS receiver, have too large position error to be used for these applications. To reduce this error, we present the vehicular positioning accuracy enhancement...
In many active safety applications, each vehicle must periodically disseminate a beacon message including the status information, such as position, speed, steering, etc., so that a neighbor vehicle can better perceive and predict the kinematics of the vehicle sending this message. However, a simple broadcasting of beacon message may lead to a low message reception as well as an excessive delay. To...
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