Open Access

ARTICLE

Efficient Digital Twin Placement for Blockchain-Empowered Wireless Computing Power Network

by Wei Wu, Liang Yu, Liping Yang^*, Yadong Zhang, Peng Wang

School of Cybersecurity, Northwestern Polytechnical University, Xi’an, 710126, China

* Corresponding Author: Liping Yang. Email:

(This article belongs to the Special Issue: Trustworthy Wireless Computing Power Networks Assisted by Blockchain)

Computers, Materials & Continua 2024, 80(1), 587-603. https://doi.org/10.32604/cmc.2024.052655

Received 10 April 2024; Accepted 15 May 2024; Issue published 18 July 2024

Abstract

As an open network architecture, Wireless Computing Power Networks (WCPN) pose new challenges for achieving efficient and secure resource management in networks, because of issues such as insecure communication channels and untrusted device terminals. Blockchain, as a shared, immutable distributed ledger, provides a secure resource management solution for WCPN. However, integrating blockchain into WCPN faces challenges like device heterogeneity, monitoring communication states, and dynamic network nature. Whereas Digital Twins (DT) can accurately maintain digital models of physical entities through real-time data updates and self-learning, enabling continuous optimization of WCPN, improving synchronization performance, ensuring real-time accuracy, and supporting smooth operation of WCPN services. In this paper, we propose a DT for blockchain-empowered WCPN architecture that guarantees real-time data transmission between physical entities and digital models. We adopt an enumeration-based optimal placement algorithm (EOPA) and an improved simulated annealing-based near-optimal placement algorithm (ISAPA) to achieve minimum average DT synchronization latency under the constraint of DT error. Numerical results show that the proposed solution in this paper outperforms benchmarks in terms of average synchronization latency.

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Keywords

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