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

为了解决可用主无线电频谱(300 MHz-3 GHz)明显稀缺的问题，提出了动态频谱接入范例以提高频谱利用率。通过允许临时的、未经许可的无线接入未占用的许可频谱(称为“频谱空洞”)，同一频谱可以支持更多的无线传输，同时尊重现有许可证持有者的权利。然而，这种模式在很大程度上依赖于这些频谱空洞的位置和大小，这些空洞可能会随时间、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地描述美国中等城市主要频谱的可用性，即二次接入的平均和最常见的情况，(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)了解和洞察大城市地区的电子空间特征(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无线服务非常重要。了解这一重要资源是如何利用的，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是很重要的。了解实际有多少频谱可用，以及这些机会在频率上的位置对无线行业至关重要，该行业在过去几年中经历了快速增长，并继续加速。

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.