Visible to the public TrustSAS: A Trustworthy Spectrum Access System for the 3.5 GHz CBRS Band

TitleTrustSAS: A Trustworthy Spectrum Access System for the 3.5 GHz CBRS Band
Publication TypeConference Paper
Year of Publication2019
AuthorsGrissa, Mohamed, Yavuz, Attila A., Hamdaoui, Bechir
Conference NameIEEE INFOCOM 2019 - IEEE Conference on Computer Communications
Keywordsblockchain, blockchain technology, broadband networks, CBRS band, citizens broadband radio service, composability, cryptographic techniques, cryptography, cyber physical systems, data privacy, Databases, dynamic spectrum access system, FCC, FCC regulatory design requirements, Federal Communications Commission, frequency 150.0 MHz, frequency 3.5 GHz, gallium arsenide, Peer-to-peer computing, privacy, pubcrawl, radio spectrum management, Resiliency, seamless spectrum, secondary users, sensitive operational information, Spectrum access system, spectrum availability, spectrum databases, spectrum demand, spectrum usage, SU privacy issues, Synthetic aperture sonar, telecommunication security, TrustSAS, trustworthy framework, trustworthy spectrum access system, Trustworthy Systems
AbstractAs part of its ongoing efforts to meet the increased spectrum demand, the Federal Communications Commission (FCC) has recently opened up 150 MHz in the 3.5 GHz band for shared wireless broadband use. Access and operations in this band, aka Citizens Broadband Radio Service (CBRS), will be managed by a dynamic spectrum access system (SAS) to enable seamless spectrum sharing between secondary users (SUs) and incumbent users. Despite its benefits, SAS's design requirements, as set by FCC, present privacy risks to SUs, merely because SUs are required to share sensitive operational information (e.g., location, identity, spectrum usage) with SAS to be able to learn about spectrum availability in their vicinity. In this paper, we propose TrustSAS, a trustworthy framework for SAS that synergizes state-of-the-art cryptographic techniques with blockchain technology in an innovative way to address these privacy issues while complying with FCC's regulatory design requirements. We analyze the security of our framework and evaluate its performance through analysis, simulation and experimentation. We show that TrustSAS can offer high security guarantees with reasonable overhead, making it an ideal solution for addressing SUs' privacy issues in an operational SAS environment.
Citation Keygrissa_trustsas_2019