CRII: NeTS: Embracing Dynamic Spectrum Sharing without Privacy Concerns

无线设备和带宽消耗巨大的应用程序的激增导致了对无处不在的无线服务的前所未有的需求，并使无线频谱成为稀缺资源。为了解决全球频谱短缺问题，提高频谱利用率，提出了动态频谱共享技术。允许辅助用户在现有用户缺席的情况下访问未充分利用的许可频谱。然而，在这样一个系统中，需要收集、分析和共享大量的信息，这给各方，特别是众包频谱感知代理和现有用户带来了严重的隐私问题。该项目解决了这些隐私问题，消除了各方的顾虑，促进了频谱的动态共享。研究人员将积极地将研究成果引导到本科和研究生课程的开发中，让本科生和代表性不足的学生参与研究，包括对小学生的外展活动，并改善代表性不足的少数民族的存在。该项目的目标是在集中式动态频谱共享系统中限制私人信息的意外暴露和设计隐私保护机制，同时实现有效的频谱共享。该项目包括两个研究重点。第一篇论文评估了位置隐私对策对无线电环境图构建的影响，探讨了如何通过一种新的有质量保证的无线电环境图构建方法来缓解精度和位置隐私之间的困境。第二个重点是设计混淆机制，在保证频谱分配效率的同时保护现有用户的操作时间隐私。该项目将提高目前对频谱共享范式中具有空间和时间动态的隐私影响的理解，并为具有类似动态的其他无线通信系统提供见解。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

The proliferation of wireless devices and bandwidth-hungry applications has led to unprecedented demands for pervasive wireless services and made wireless spectrum a scarce resource. Dynamic spectrum sharing has been proposed to address the worldwide spectrum shortage and improve spectrum utilization. It allows secondary users to access the underutilized licensed spectrum when the incumbent users are absent. However, in such a system, abundant information needs to be collected, analyzed, and shared, which leads to serious privacy issues for the involved parties, especially for crowdsourced spectrum sensing agents and the incumbent users. This project addresses such privacy problems, relieves concerns from the involved parties, and facilitates dynamic spectrum sharing. The researcher will actively channel the research results into the development of undergraduate and graduate curricula, engage undergraduate and under-represented students into research, including outreach activities to elementary students, and improve the presence of underrepresented minorities. The goal of this project is to limit unintended exposure of private information and design privacy-preserving mechanisms in centralized dynamic spectrum sharing systems while enabling efficient spectrum sharing. The project consists of two research thrusts. The first thrust assesses the impacts of location privacy countermeasures to radio environment map construction and investigates how to mitigate the dilemma between accuracy and location privacy through a novel quality-assured radio environment map construction method. The second thrust aims to design obfuscation mechanisms to protect the operational time privacy of the incumbent users while ensuring the spectrum efficiency in spectrum allocation. The project will improve the current understanding of privacy implications in the spectrum sharing paradigm with spatial and temporal dynamism and provide insights to other wireless communication systems with similar dynamism.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.