Cooperative Spectrum Sensing Method Against Spectrum Sensing Data Falsification Attacks Based on Multiscale Entropy

WANG Anyi; GONG Jianchao; ZHU Tao

doi:10.11999/JEIT241091

Volume 47 Issue 7

Jul. 2025

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WANG Anyi, GONG Jianchao, ZHU Tao. Cooperative Spectrum Sensing Method Against Spectrum Sensing Data Falsification Attacks Based on Multiscale Entropy[J]. Journal of Electronics & Information Technology, 2025, 47(7): 2080-2088. doi: 10.11999/JEIT241091

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WANG Anyi, GONG Jianchao, ZHU Tao. Cooperative Spectrum Sensing Method Against Spectrum Sensing Data Falsification Attacks Based on Multiscale Entropy[J]. Journal of Electronics & Information Technology, 2025, 47(7): 2080-2088. doi: 10.11999/JEIT241091

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Cooperative Spectrum Sensing Method Against Spectrum Sensing Data Falsification Attacks Based on Multiscale Entropy

doi: 10.11999/JEIT241091 cstr: 32379.14.JEIT241091

College of Communication and Information Engineering, Xi’an University of Science and Technology, Xi’an 710699, China

Funds: The National Natural Science Foundation of China (62471384)

Received Date: 2024-12-10
Rev Recd Date: 2025-03-03

Available Online: 2025-03-14

Publish Date: 2025-07-22

Abstract

Abstract

Objective With the rapid development of 5G and Internet of Things (IoT) technologies and the increasing number of devices accessing wireless networks, Cognitive Radio (CR) technology offers an effective solution to alleviate spectrum resource scarcity. CR allows Secondary Users (SU) to perform spectrum sensing and share the Primary User (PU) frequency band. However, Cooperative Spectrum Sensing (CSS) is vulnerable to Spectrum Sensing Data Falsification (SSDF) attacks by Malicious Users (MU), which degraded sensing performance. Existing anti-SSDF algorithms, while reducing the effects of SSDF attacks, face challenges in detecting MU under complex attack strategies. This study proposes the use of multiscale entropy to enhance anti-SSDF attack schemes. By updating the reputation value of SU sensing results through multiscale analysis, the detection performance and MU detection rate of the CSS algorithm under various attack strategies are significantly improved. This work provides a solution to the problem of SSDF attacks under complex strategies and offers a theoretical foundation for CSS technology in areas with scarce spectrum resources. Methods The multiscale entropy algorithm calculates the reputation value of the SU using a sliding window model. It extracts effective features from the local sensing results of the SU and converts them into weights, which are then used to update the SU’s reputation value. The final reputation value is compared with a threshold to identify MU. The sliding window model collects SU sensing results from different time slots and computes the reputation value by comparing them with the Fusion Center (FC) judgment results. A normalization function processes the updated reputation value to derive the final global decision. A higher reputation value indicates that the SU’s local sensing result is more reliable, while a lower reputation value suggests the user may be an MU. Results and Discussions The multiscale entropy algorithm performs multiscale analysis of the SU perception results based on a sliding window model. This approach mitigates the impact of MU on CSS system performance by extracting effective features to counter Independent Attacks (IA) and Collaborative Attacks (CA). Simulation results show that CA affects CSS performance more significantly than IA (Fig. 3, Fig. 4). The proposed algorithm effectively identifies MUs under both attack strategies (Fig. 7, Fig. 9), demonstrating its effectiveness. Additionally, the algorithm exhibits low complexity (Table 1). Under both IA and CA, when the attack probability exceeds 0.4, the MU detection rate improves by an average of 3.56%, 0.77%, and 6.45%, 36.92%, respectively, compared to the baseline algorithms. These results highlight the strong anti-attack capability of the proposed algorithm. Conclusions This paper addresses the SSDF attacks problem in CSS. The detection capability of MU is constrained by the reliability of the global decision. To mitigate this issue, a CSS method based on multiscale entropy is proposed. The method, built on the sliding window model, utilizes multiscale entropy to extract feature information that enhances judgment accuracy, thereby updating the reputation value and improving the global decision. Simulation results demonstrate that the proposed algorithm exhibits strong resistance to SSDF attacks and performs well in MU detection under both IA and CA, with lower complexity. This approach is particularly suitable for regions with scarce spectrum resources, ensuring the reliable operation of CR systems and enabling efficient spectrum utilization by effectively identifying MU. Future work will explore the application of deep learning techniques in CSS against SSDF attacks, aiming to further enhance network performance.
- Cooperative spectrum sensing (CSS),
- SSDF attacks,
- Reputation value,
- Multiscale entropy

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References(22)

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