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基于联盟链的运营商最佳缓存策略

姜静 王凯 许曰强 杜剑波 仇超 巩译

姜静, 王凯, 许曰强, 杜剑波, 仇超, 巩译. 基于联盟链的运营商最佳缓存策略[J]. 电子与信息学报, 2022, 44(9): 3043-3050. doi: 10.11999/JEIT220374
引用本文: 姜静, 王凯, 许曰强, 杜剑波, 仇超, 巩译. 基于联盟链的运营商最佳缓存策略[J]. 电子与信息学报, 2022, 44(9): 3043-3050. doi: 10.11999/JEIT220374
JIANG Jing, WANG Kai, XU Yueqiang, DU Jianbo, QIU Chao, GONG Yi. Optimal Caching Strategy of Operators Based on Consortium Blockchain[J]. Journal of Electronics & Information Technology, 2022, 44(9): 3043-3050. doi: 10.11999/JEIT220374
Citation: JIANG Jing, WANG Kai, XU Yueqiang, DU Jianbo, QIU Chao, GONG Yi. Optimal Caching Strategy of Operators Based on Consortium Blockchain[J]. Journal of Electronics & Information Technology, 2022, 44(9): 3043-3050. doi: 10.11999/JEIT220374

基于联盟链的运营商最佳缓存策略

doi: 10.11999/JEIT220374
基金项目: 国家自然科学基金(61871321, 61901367, 62101442),国家科技重大专项(2016ZX03001016-004), 陕西自然科学基金(2020JQ-84),陕西省教育厅专项科研计划(20JK0918),陕西省教育厅服务地方专项(21JC032)
详细信息
    作者简介:

    姜静:女,教授,研究方向为边缘计算、人工智能及通感算一体化设计

    王凯:男,硕士生,研究方向为边缘计算、区块链技术

    许曰强:男,博士生,研究方向为边缘计算、区块链技术、人工智能

    杜剑波:女,副教授,研究方向为边缘计算、资源分配、区块链技术、人工智能

    仇超:女,讲师,研究方向为算力网络、区块链、边缘智能

    巩译:女,副教授,研究方向为无线通信、区块链技术

    通讯作者:

    王凯 wk@stu.xupt.edu.cn

  • 中图分类号: TN92

Optimal Caching Strategy of Operators Based on Consortium Blockchain

Funds: The National Natural Science Foundation of China (61871321, 61901367, 62101442), The National Science and Technology Major Project of China (2016ZX03001016-004), The Natural Science Foundation of Shaanxi Province (2020JQ-84), The Special Scientific Research Projects of Department of Education of Shaanxi Provincial (20JK0918), The Serving Local Special Scientific Research Project of Education Department of Shaanxi Province (21JC032)
  • 摘要: 基于区块链的边缘缓存技术可以实现更大范围的内容共享并提高缓存内容的使用效率。针对不同运营商各自建设边缘设备,缓存内容相互隔离,难以共享信息的问题,该文提出一种基于联盟链的边缘缓存系统框架并设计了内容共享和交易流程,实现了不同运营商之间的内容共享。此外,为了降低高维缓存节点的共识开销,设计了基于内容缓存的部分实用拜占庭容错(pPBFT)共识机制,仅选取缓存相关内容的联盟链节点作为验证智能合约的执行节点。最后,将运营商内容共享所带来的收益进行量化并构建为最大化收益的优化问题。通过所提出的内容缓存算法,得到了最优缓存决策的闭式表达式和与内容流行度相关的最优缓存策略。仿真结果表明,在该框架中所提出的共识机制和缓存策略能够有效增加运营商的缓存收益。
  • 图  1  基于联盟链的运营商边缘缓存系统框架

    图  2  基于联盟链的运营商边缘缓存系统内容共享及交易过程

    图  3  时隙t的pPBFT共识机制

    图  4  不同共识方案下节点数量与开销关系

    图  5  缓存空间与缓存平均收益关系

    图  6  不同内容缓存数据量比较

    图  7  偏斜参数与缓存平均收益关系

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出版历程
  • 收稿日期:  2022-03-31
  • 录用日期:  2022-08-01
  • 修回日期:  2022-07-31
  • 网络出版日期:  2022-08-03
  • 刊出日期:  2022-09-19

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