Collaborative Research: SII-NRDZ: SweepSpace: Enabling Autonomous Fine-Grained Spatial Spectrum Sensing and Sharing

合作研究：SII-NRDZ：SweepSpace：实现自主细粒度空间频谱感知和共享

• 批准号: 2348589
• 负责人: Alireza Vahid
• 金额: $ 40万
• 依托单位: Rochester Institute of Tech
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2024
• 资助国家: 美国
• 起止时间: 2024-02-15 至 2025-09-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2348589&HistoricalAwards=false
• 关键词: Collaborative; Research; SII; NRDZ; SweepSpace

This project investigates methods to mitigate radio-frequency interference. The research team will implement new approaches, which are needed because traditional electromagnetic (radio-frequency) spectrum monitoring approaches are losing effectiveness. The continuing growth of wireless communications requires the limited available spectrum to be used ever more efficiently. To pack wireless systems more tightly, transmitters and receivers are evolving to use directional antennas that can steer away from interference. Directional transmissions mean a sensor at a single location can no longer rely on detecting all nearby transmissions, and when the sensor does observe an incoming signal, it cannot easily predict what other devices or locations are impacted. SweepSpace seeks to overcome these limitations and provide new spatial and directional information that enables safely increasing communications and sensing capacity without increasing spectrum cost. This project evaluates the new methods and the SweepSpace prototype through analysis, laboratory tests and limited field experiments. The project will provide training for the next-generation workforce for wireless communications and spectrum science by engaging graduate, undergraduate, and high-school students, including students from underrepresented groups. SweepSpace sensor kits, based on a low-cost software defined radio, will be created for use in workshops, demonstrations, and classrooms. SweepSpace is a generalized spectrum sensing architecture designed to report all spatio-temporal activity in a spatial-frequency volume. Complete knowledge of transmissions requires the deployment of a dense network of sensors; it requires each sensor to detect all incoming signals across a wide range of frequencies; and it requires each sensor to identify the direction of all incoming signals. Rapid sweeping across 3D space over a wide band enables a low-cost sensor with a single moderate-bandwidth receiver to frequently sample every channel in a wide range and to frequently sample all incident directions via a sweeping phased array antenna. The team will investigate the use of off-the-shelf components to develop a prototype low-cost SweepSpace node. They will investigate 1) reconstruction of a full spatio-temporal activity map from samples that are sparse across space, time, frequency, and incident direction; 2) enhancing the directional precision of individual sensors; 3) optimizing the placement and parameterization of the; and 4) identifying spatio-temporal holes for safe insertion of new activity. They will also investigate single-sensor questions, such as minimum detectability bounds, risk of missed detections and false positives, and optimal scheduling policies, and they will characterize the probability of missed detections by a network of sensors. The project includes development of risk mitigation tools that can be used by others to tailor SweepSpace for their use cases.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.

该项目研究了减轻射频干扰的方法。研究团队将实施新方法，因为传统的电磁（射频）频谱监测方法正在失去有效性。无线通信的持续增长需要有限的可用频谱才能更有效地使用。要更紧密地打包无线系统，发射器和接收器正在发展以使用可以避开干扰的定向天线。方向传输意味着一个位置的传感器不再依赖于检测附近的所有传输，并且当传感器确实观察到传入信号时，它无法轻易预测其他设备或位置会影响哪些其他设备或位置。 Sweepspace试图克服这些局限性，并提供新的空间和定向信息，使得可以安全地提高通信和传感能力而不会增加频谱成本。该项目通过分析，实验室测试和有限的现场实验评估新方法和扫描空间原型。该项目将通过参与毕业生，本科生和高中生，包括来自代表性不足的团体的学生，为无线通信和频谱科学的下一代劳动力提供培训。将基于低成本软件定义的无线电套件，用于用于研讨会，演示和教室。 Sweepspace是一种广义频谱传感体系结构，旨在报告空间频率量中的所有时空活动。完全了解传输需要部署密集的传感器网络；它要求每个传感器在广泛的频率范围内检测所有传入的信号。它要求每个传感器确定所有传入信号的方向。在宽带上快速扫描3D空间，可以使具有单个中等带宽接收器的低成本传感器在宽范围内经常采样每个通道，并通过大型相分布的阵列天线经常采样所有入射方向。该团队将调查使用现成的组件来开发原型低成本扫描空间节点。他们将研究1）从跨空间，时间，频率和入射方向稀疏的样品中重建完整的时空活动图； 2）增强单个传感器的定向精度； 3）优化; 4）确定时空孔以安全地插入新活动。他们还将研究单传感器问题，例如最小可检测性界限，错过检测和误报的风险以及最佳的调度策略，它们将表征传感器网络丢失检测的可能性。该项目包括开发降低风险工具的工具，其他人可以用来为其用例量身定制Sweepspace。该奖项反映了NSF的法定任务，并认为使用基金会的知识分子优点和更广泛的影响审查标准，被认为值得通过评估。