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Title	Reliable Traffic Monitoring Mechanisms Based On Blockchain In Vehicular Networks
ID_Doc	44994
Authors	Guo J.; Ding X.; Wu W.
Year	2022
Published	IEEE Transactions on Reliability, 71, 3
DOI	http://dx.doi.org/10.1109/TR.2020.3046556
Abstract	Real-time traffic monitoring is a fundamental mission in a smart city to understand traffic conditions and avoid dangerous accidents. In this article, we propose a reliable and efficient traffic monitoring system that integrates blockchain and the Internet of Vehicles technologies effectively. It can crowdsource its tasks of traffic information collection to vehicles that run on the road instead of installing cameras in every corner. First, we design a lightweight blockchain-based information trading framework to model the interactions between traffic administration and vehicles. It guarantees reliability, efficiency, and security during executing trading. Second, we define the utility functions for the entities in this system and come up with a budgeted auction mechanism that motivates vehicles to undertake the collection tasks actively. In our algorithm, it not only ensures that the total payment to the selected vehicles does not exceed a given budget but also maintains the truthfulness of the auction process that prevents some vehicles from offering unreal bids for getting greater utilities. Finally, we conduct a group of numerical simulations to evaluate the reliability of our trading framework and performance of our algorithms, whose results demonstrate their correctness and efficiency perfectly. © 1963-2012 IEEE.
Author Keywords	Budgeted auction; Internet of Vehicles (IoV); lightweight blockchain; reliability; truthfulness

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