最小损失算法在区块链物联网中的优化研究
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昆明理工大学信息工程与自动化学院

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TP311

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国家自然科学基金(61761025)


Optimization of minimum loss algorithm in blockchain internet of things
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1.Kunming University of Science Technology,School of Information Engineering and automation;2.Kunming University of Science and Technology,School of Information Engineering and automation;3.Kunming University of Science and Technology,School of Information Engineering and automation

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    摘要:

    区块链技术与物联网相结合能发挥去中心化优势,在一定程度上提升物联网系统数据安全性及可靠性等性能.但区块链的通量受限特征,使得区块链较低的交易吞吐量在很大程度上难以满足 物联网场景下的高吞吐量的业务需求.本文提出一种最小损失函数算法,首先,根据状态和动作输入对来构建状态空间和行为空间;其次,在系统延迟性约束条件下,迭代计算出状态空间和行 为空间的行为价值函数;最后,利用损失函数对比行为价值函数的真实值和估计值后执行吞吐量最大值去调整块大小和块间隔.仿真结果表明,与DDRL算法和DRL算法相比,最小损失算法动态 调整区块大小和区块间隔,在基于区块链的物联网系统达到稳定后可以获得更高的吞吐量.

    Abstract:

    The combination of blockchain technology and internet of things can play a decentralized advantage and improve the data security and reliability of the internet of things system to a certain extent, but the flux limitation characteristics of the blockchain make the low transaction throughput of blockchain difficult to meet the high throughput business requirements in the internet of things scenario. In this paper, a minimum loss function algorithm is proposed,in which the state space and behavior space are first constructed according to the state and action input, and then the behavior value function of state space and behavior space are calculated iteratively under the condition of system delay constraint. Finally, the block size and block interval is adjusted by using the loss function to compare the true value and estimated value of the behavior value function. The simulation results show that,compared with the DDRL algorithm and the DRL algorithm, the minimum loss algorithm dynamically adjusts the block size and block spacing, and can obtain higher throughput after the blockchain based internet of things system reaches stablility.

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引用本文格式: 刘云,宋凯,陈路遥,朱鹏俊. 最小损失算法在区块链物联网中的优化研究[J]. 四川大学学报: 自然科学版, 2022, 59: 023002.

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  • 收稿日期:2021-02-18
  • 最后修改日期:2021-05-09
  • 录用日期:2021-05-12
  • 在线发布日期: 2022-04-01
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