Edge Server Deployment Scheme of Blockchain in IoVs
Edge Server Deployment Scheme of Blockchain in IoVs
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DOI：
10.1109/tr.2022.3142776
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发表时间：
2020-06
影响因子：
5.9
通讯作者：
Liya Xu;Mingzhu Ge;Weili Wu
中科院分区：
文献类型：
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作者：
Liya Xu;Mingzhu Ge;Weili Wu
在车联网中，车辆产生和传播信息，从而实现相关的车载服务。然而，物联网是一个不可信的环境。车辆无法评估接收到的信息的可信度，这使得在车联网中实现数据共享成为一个挑战。区块链由于其去中心化、不可伪造和集体维护的优势，一直受到人们的关注，被认为是解决这一挑战的可行解决方案。区块链的共识机制要求系统中的矿工具备强大的算力进行挖矿，而车联网中节点的算力有限，制约了区块链在车联网中的应用。事实上，区块链在车联网中的应用可以通过边缘计算来实现。边缘计算的关键实体是边缘服务器（ES）。路边节点（RSU）可以部署为车联网中边缘计算的ES。在这篇文章中，我们研究了在车联网中覆盖更多车辆节点的ES部署方案，并提出了一种随机算法来计算近似解。最后，我们模拟了该方案的性能，并与其他部署方案进行了比较。
In the Internet of Vehicles (IoVs), vehicles generate and disseminate information, which makes the related vehicular services realized. However, the IoVs is an untrusted environment. Vehicles cannot evaluate the credibility of the received information, which makes it a challenge to implement data sharing in IoVs. Blockchain, constantly directed main attention, are considered as a feasible solution to address the challenge, due to its advantages of decentralization, unforgeability, and collective maintenance. The consensus mechanism of blockchain requires the miners in the system with strong computing power for mining, while the computing power of nodes in IoVs is limited, which restricts the application of blockchain in IoVs. In fact, the application of blockchain in IoVs can be implemented by employing edge computing. The key entity of edge computing is the edge servers(ESs). Roadside nodes (RSUs) can be deployed as ESs of edge computing in IoVs. In this article, we study the ESs deployment scheme for covering more vehicle nodes in IoVs, and propose a randomized algorithm to calculate approximation solutions. Finally, we simulated the performance of the proposed scheme and compared it with other deployment schemes.