Collaborative Research: SWIFT: Closing the Loop for Accountable Interference-free Spectrum Sharing with Passive Radio Receivers

美国的频谱对科学、教育、商业、交通和当代生活都具有令人难以置信的价值。无线带宽需求正在迅速增长，但向无线用户分配频谱不应以牺牲天文学和地球科学的科学观测为代价，这些科学观测已经分配不足，当在狭窄的受保护频带之外进行机会性操作时，可能会受到干扰。该项目正在开发新的安全和可靠的共享协议，不仅能够在地面商业无线系统和无源接收器之间更有效地共享频谱，而且还允许无源系统强制特定干扰发射机切换频段。改善共存使射电天文接收器的运行更加可靠。该项目正在创建开源软件和数据，并与ITU-R合作，以确保结果影响研究界和未来的频谱共享政策。通过课程材料和研究经验，该项目正在影响本科生和研究生的教育，该项目致力于K12外游。该项目正在开发射频水印，将随机假名嵌入到传输的无线通信信号中，以便无源接收器可以解调任何干扰源的假名。然后，所提出的系统允许无源接收器间接通知干扰设备改变频段。为了防止任何其他设备推断私人信息，所提出的系统利用差异隐私来定量地限制隐私泄露。此外，该项目正在采用软件认证来开发在用户设备上正确执行频谱决策的证明，并以频谱策略执行来补充基于水印的检测系统。正在研究的协议正作为一个开源项目在PAWR试验台上实施和测试。包括欧文斯山谷射电天文台在内的广泛实验正在验证技术贡献，并量化其性能和对攻击的稳健性。这一奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

Spectrum in the US is incredibly valuable to science, education, commerce, transportation, and contemporary life. Wireless bandwidth needs are rapidly growing, but allocation of spectrum to wireless users should not come at the expense of scientific observation in astronomy and earth science which are already under-allocated and subject to interference when operating opportunistically outside the narrow protected bands. This project is developing new secure and accountable sharing protocols that not only enable more efficient sharing of the spectrum between terrestrial commercial wireless systems and passive receivers, but also empowers passive systems to force a particular interfering transmitter to switch band. Improved coexistence allows more reliable operation of radio astronomy receivers. This project is creating open source software and data, and working with the ITU-R to ensure that results impact the research community and future spectrum sharing policy. Developments are impacting undergraduate and graduate education through course material and research experiences, and the project is engaged in K12 outreach.This project is developing RF watermarks that embed random pseudonyms into transmitted wireless communication signals so that passive receivers can demodulate the pseudonym of any interferer. The proposed system then allows passive receivers to indirectly inform the interfering device to change band. To prevent any other device from inferring private information, the proposed system leverages differential privacy to quantitatively limit privacy leakage. Further, the project is adapting software attestation to develop proof of correct execution of spectrum decision on user equipment, and complementing the watermark-based detection system with spectrum policy enforcement. Protocols under study are being implemented and tested on PAWR testbeds as an open source project. Extensive experimentation, including at the Owens Valley Radio Observatory, is validating the technical contributions, and quantifying its performance and robustness to attacks.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.