NeTS-WN: Quantification of Spectrum Availability for Wireless Network Access

为了解决可用主要无线电频谱（300 MHz - 3 GHz）明显稀缺的问题，提出了动态频谱接入范式来提高频谱利用率。通过允许临时、未经许可的无线访问未占用的许可频谱（称为“频谱空洞”），同一频谱可以支持大量无线传输，同时尊重现有许可证持有者的权利。然而，这种范式在很大程度上取决于这些频谱空洞的位置和大小，这些频谱空洞可能会随着时间、频率和地理位置而随机变化。该项目的目标是：(i) 通过理论和实验技术准确描述美国中型城市主要频谱的可用性，即平均和最常见的情况，以便进行二次接入，(ii) 定量确定频谱占用和频谱空洞可用性的长期行为和趋势，以及 (iii) 了解并深入了解大型城市地区的电空间特征（时间、频率、空间）。可用主要频谱的定量评估和表征对于提供新的和不断增长的频谱非常重要无线服务。了解如何利用这一重要资源将极大地帮助频谱监管机构和用户规划未来的部署和无线行业的整体增长。由于现代社会依赖通信网络才能正常运行，因此对频谱可用性进行研究非常重要。了解实际可用频谱的数量以及这些机会位于频率中的位置对于无线行业至关重要，该行业在过去几年中经历了快速增长并持续加速。

To resolve the apparent scarcity of available prime radio spectrum (300 MHz - 3 GHz), the dynamic spectrum access paradigm was proposed to improve spectrum utilization. By enabling temporary, unlicensed wireless access to the unoccupied licensed spectrum, called "spectrum holes", a larger number of wireless transmissions can be supported by the same spectrum while simultaneously respecting the rights of the incumbent license holders. However, this paradigm heavily depends on the location and size of these spectrum holes, which can vary randomly with respect to time, frequency, and geography. The objective of this project is: (i) to accurately characterize the availability of prime spectrum in mid-size US cities, i.e. the average and most common case, for secondary access via theoretical and experimental techniques, (ii) to quantitatively determine the long-term behavior and trends of spectrum occupancy and spectrum hole availability, and (iii) to understand and obtain insight into the electrospace characteristics (time, frequency, spatial) over a large urban area.The quantitative assessment and characterization of available prime spectrum is important for providing access to new and growing wireless services. Understanding how this essential resource is utilized will greatly assist spectrum regulators and users to plan future deployments and the overall growth of the wireless industry. Since modern society depends on communication networks in order to function properly, conducting research into spectrum availability is important. Knowledge of how much spectrum is actually available and where those opportunities are located in frequency is of vital importance to the wireless industry, which has experienced rapid growth over the past several years and continues to accelerate.