Anonymous Dynamic Spectrum Access and Sharing Mechanisms for the CBRS Band
Anonymous Dynamic Spectrum Access and Sharing Mechanisms for the CBRS Band
复制标题
DOI：
10.1109/access.2021.3061706
复制
发表时间：
2021-01-01
期刊：
影响因子：
3.9
通讯作者：
Tirupathi, Chittibabu
中科院分区：
文献类型：
--
作者：
Grissa, Mohamed;Yavuz, Attila Altay;Tirupathi, Chittibabu
联邦通信委员会（FCC）已经发布了3.5 GHz（3550-3700 MHz）频带，称为公民宽带无线电服务（CBRS），用于通过动态和机会性频谱接入在现任联邦和次级用户之间共享宽带使用。FCC要求通过使用频谱接入系统（SAS）来操作和管理该频带，该频谱接入系统将专门为此目的而部署。挑战在于，SAS要求二级用户提供他们的一些私人运营数据，例如他们的物理位置、身份和频谱使用情况，以便他们获得频谱可用性信息。在本文中，我们提出了一个保护隐私的SAS框架TrustSAS，它将最先进的加密机制与区块链技术相结合，通过保护用户的隐私来实现对SAS的匿名访问，同时仍然符合FCC的监管设计要求和规则。我们通过理论分析，计算机模拟和测试台实验的性能评估TrustSAS，并表明它可以提供高的安全保证，使其适用于SAS环境，而不需要妥协的私人信息，其次要用户。
The Federal Communications Commission (FCC) has released the 3.5 GHz (3550-3700 MHz) band, termed Citizens Broadband Radio Service (CBRS), for shared broadband use between incumbent federal and secondary users through dynamic and opportunistic spectrum access. FCC requires that this band be operated and managed through the use of spectrum access systems (SAS s), which are to be deployed specifically for this purpose. The challenge is that SAS requires that secondary users provide some of their private operational data, such as their physical location, identity and spectrum usage, in order for them to acquire spectrum availability information. In this paper, we propose a privacy-preserving SAS framework, TrustSAS, that synergizes state-of-the-art cryptographic mechanisms with blockchain technology to enable anonymous access to SAS by protecting users' privacy while still complying with FCC's regulatory design requirements and rules. We evaluate the performance of TrustSAS through theoretic analysis, computer simulation and testbed experimentation, and show that it can offer high security guarantees, making it suitable for SAS environments without needing to compromise private information of its secondary users.