Optimal Caching Strategy of Operators Based on Consortium Blockchain

JIANG Jing; WANG Kai; XU Yueqiang; DU Jianbo; QIU Chao; GONG Yi

doi:10.11999/JEIT220374

Volume 44 Issue 9

Sep. 2022

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Article Navigation > Journal of Electronics & Information Technology > 2022 > 44(9): 3043-3050

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

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Optimal Caching Strategy of Operators Based on Consortium Blockchain

doi: 10.11999/JEIT220374

1.
Shaanxi Key Laboratory of Information Communication Network and Security, Xi’an University of Posts and Telecommunications, Xi’an 710121, China
2.
School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
3.
College of Intelligence and Computing, Tianjin University, Tianjin 300350, China
4.
School of Information & Communication Engineering, Beijing Information Science & Technology University, Beijing 100192, China

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)

Received Date: 2022-03-31
Accepted Date: 2022-08-01
Rev Recd Date: 2022-07-31

Available Online: 2022-08-03

Publish Date: 2022-09-19

Abstract

Abstract

The edge caching based on blockchain will achieve a wider range of content sharing, and enhance the efficiency of caching contents. However, different operators build their own edge devices and the cached contents are isolated and have difficulty in sharing information. In this paper, a blockchain-based edge caching system framework and a content sharing and transaction process is proposed, which can realize content sharing between different operators. In addition, a partial Practical Byzantine Fault Tolerant (pPBFT) consensus mechanism based on content caching is designed to reduce the consensus cost of high-dimensional caching nodes, in which only the consortium nodes that cache the relevant content can be selected as execution nodes for validating smart contracts. Finally, through quantifying the benefit obtained by operators' content sharing, the closed-form optimal solution is derived with the aim to maximize the profit by adopting the proposed content caching strategy, and the optimal caching strategy related to the popularity of the content is further developed. Simulation results show that the proposed consensus mechanism and caching strategy based on this framework can effectively increase the operator's caching revenue.
- Edge caching,
- Blockchain,
- Consensus mechanism,
- Content sharing

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References(18)

References

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