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Title	Blockchain-Based Secure And Cooperative Private Charging Pile Sharing Services For Vehicular Networks
ID_Doc	12651
Authors	Wang Y.; Su Z.; Li J.; Zhang N.; Zhang K.; Choo K.-K.R.; Liu Y.
Year	2022
Published	IEEE Transactions on Vehicular Technology, 71, 2
DOI	http://dx.doi.org/10.1109/TVT.2021.3131744
Abstract	With the proliferation of electric vehicles (EVs), private charging pile (PCP) sharing networks are likely to be an integral part of future smart cities, especially in places with limited public charging infrastructure. However, there are a number of operational challenges associated with the deployment of PCPs in such a shared and untrusted environment. For example, how do we formulate efficient PCP sharing strategies in PCP sharing networks, while also taking into consideration the dynamic charging behaviors of EVs? Therefore, in this paper, we propose an energy blockchain-based secure PCP sharing scheme (BBC) for PCP sharing networks. First, an energy blockchain-based framework is designed for PCP sharing networks to facilitate energy sharing services for EVs and PCPs, using both distributed ledgers and cryptocurrency. Then, we devise a reputation-based secure PCP sharing algorithm to improve consensus efficiency with smaller signature sizes. In addition, a distributed reputation mechanism is constructed to assess the trustworthiness of consensus nodes in blockchain, based on ratings, behaviors, and fading. We also model the interactions among EVs and cooperative PCPs as a joint coalition-matching game, and obtain the optimal strategies of PCPs and EVs by analyzing the Nash-stable coalitional structure and stable many-to-one matching pairs. Extensive simulations and the real-world implementation demonstrate that the proposed approach improves the utility of EV users and renewable energy efficiency in PCP sharing networks. © 1967-2012 IEEE.
Author Keywords	coalition-matching game; Electric vehicle (EV); energy blockchain; private charging pile (PCP)

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