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Issue No.09 - Sept. (2012 vol.23)
pp: 1762-1774
Adelin Miloslavov , Harvard University, Cambridge
Malathi Veeraraghavan , University of Virginia, Charlottesville
A probe data service has been defined as a means for vehicular on-board units (OBUs) to transmit the data collected by their in-vehicle sensors in real time via wireless communication links to road-site units (RSUs). Sensor data fusion algorithms are developed in this work to aggregate data collected through this probe data service for computing single-RSU and multi-RSU average per-division speeds and average route travel times, where a division is defined to be a small segment of a road. These algorithms are evaluated using an integrated simulation testbed that consists of a vehicular simulator and a wireless communication link simulator, which are interconnected via a TCP/IP connection. Our key findings are that the probe data service offers an excellent means for computing average per-division speeds and average route travel times when the market penetration level of OBUs is relatively high. Privacy constraints negatively impact the accuracy of route travel time estimates as routes often span roads under the wireless coverage area of many road-side units requiring frequent vehicle identity changes. The impact of wireless communication losses is quite significant, requiring the use of accurate models in any simulation-based studies.
Vehicles, Probes, Wireless communication, Roads, Computational modeling, Polynomials, Wireless sensor networks, modeling, Vehicles, Probes, Wireless communication, Roads, Computational modeling, Polynomials, Wireless sensor networks, and visualization: applications., Communication/networking and information technology, computer applications: engineering, mobile applications: wireless sensor networks, simulation
Adelin Miloslavov, Malathi Veeraraghavan, "Sensor Data Fusion Algorithms for Vehicular Cyber-Physical Systems", IEEE Transactions on Parallel & Distributed Systems, vol.23, no. 9, pp. 1762-1774, Sept. 2012, doi:10.1109/TPDS.2012.107
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