Decentralized Synchronization Between Spectrum Access Systems via Blockchain

• Alan Veloso UFPA
• Jeffson Sousa UFPA / CPQD
• Diego Abreu UFPA
• Antônio Abelém UFPA

DOI: https://doi.org/10.5753/semish.2025.9038

Abstract

This paper proposes a hybrid architecture for Spectrum Access Systems (SAS) that integrates permissioned blockchain technology to enable secure, auditable, and interoperable communication between different SAS instances. The solution replaces traditional REST interfaces with a distributed infrastructure based on smart contracts, which automate processes such as data usage agreements, device registration, and spectrum coordination. The proposal is validated through a prototype implemented with Hyperledger Besu, demonstrating practical feasibility and compliance with regulatory requirements. The architecture provides advantages such as data immutability, shared governance, and operational resilience, representing a step forward in secure and dynamic spectrum management for emerging mobile networks.

References

Alsaedi, W. K. et al. (2023). Spectrum options and allocations for 6g: A regulatory and standardization review. IEEE Open Journal of the Communications Society.

Li, Z., Wang, W., Guo, J., Zhu, Y., Han, L., and Wu, Q. (2021). Blockchain-assisted dynamic spectrum sharing in the cbrs band. In IEEE ICCC.

Li, Z., Wang, W., Wu, Q., and Wang, X. (2023). Multi-operator dynamic spectrum sharing for wireless communications: A consortium blockchain enabled framework. IEEE Transactions on Communications.

Perera, L., Ranaweera, P., Kusaladharma, S., Wang, S., and Liyanage, M. (2024). A survey on blockchain for dynamic spectrum sharing. IEEE Open Journal of the Communications Society, 5:1753–1770.

Salahdine, F., Han, T., and Zhang, N. (2023). 5g, 6g, and beyond: Recent advances and future challenges. Annals of Telecommunications, 78(9):525–549.

Sousa, J. C., Duarte, V., Pinto, M., Evaristo, B., and Formigoni Filho, J. R. (2024). Solução descentralizada de compartilhamento de infraestrutura de redes baseada em blockchain. In XLI Simpósio Brasileiro de Telecomunicações e Processamento de Sinais (SBrT 2024), Belém, PA, Brasil.

Wireless Innovation Forum (2020). Signaling protocols and procedures for citizens broadband radio service (cbrs): Spectrum access system (sas) - sas interface technical specification. Technical Report WINNF-TS-0096, Version 1.3.2, The Software Defined Radio Forum Inc.

Wireless Innovation Forum (2022). Signaling protocols and procedures for citizens broadband radio service (cbrs): Spectrum access system (sas) - citizens broadband radio service device (cbsd) interface technical specification. Technical Report WINNF-TS-0016, Version 1.2.7, The Software Defined Radio Forum Inc.

Wu, Q., Wang, W., Li, Z., Zhou, B., Huang, Y., and Wang, X. (2023). Spectrumchain: a disruptive dynamic spectrum-sharing framework for 6g. Science China Information Sciences, 66(3):130302.

Xiao, Y., Shi, S., Lou, W., Wang, C., Li, X., Zhang, N., Hou, Y. T., and Reed, J. H. (2023). Bd-sas: Enabling dynamic spectrum sharing in low-trust environment. IEEE Transactions.