论文标题
智能频谱管理中有执照和无执照的频段干扰的特征
Characteristics of Interference in Licensed and Unlicensed Bands for Intelligent Spectrum Management
论文作者
论文摘要
物联网设备的指数增长以及智能设备对较高数据速率的需求增强了在有执照的频段和在无执照的频段中运行的有执照频段和Wi-Fi技术运行的蜂窝5G/6G中共享和管理光谱资源的需求。智能频谱管理已成为动态频谱分配中的关键概念。为了了解频谱中存在的干扰，研究人员通常监测固定位置的干扰，并专注于细胞带或Wi-Fi频段。在这项研究中，我们使用移动接收器Spectrum Analyzer进行了在室内和室外环境中收集实时光谱数据的实验。对于户外，我们将Spectrum Analyzer安装在汽车座椅上，然后在市区选定的路线上行驶。我们将分析仪放在购物车上，并在实验室中移动到室内。这项研究的关注频率为1.9-2.5 GHz，包括许可和无执照的频段。比较了许可和无牌带和未经许可的频率域行为。我们首先将数据归一化并用阈值对数据进行二进制。然后，我们通过计算连续数量来计算频谱占用率。根据我们的观察，室外环境的光谱占用比室内环境更为显着。许可频带的干扰显示频域中的变化要比未经许可的频段中的变化更大。这项研究可以更好地了解不同环境和频段的干扰行为。
The exponential growth of IoT devices and the demand of smart devices for higher data rates has heightened the need for sharing and managing spectrum resources in cellular 5G/6G operating in licensed bands and Wi-Fi technologies operating in unlicensed bands. Intelligent spectrum management has emerged as a key concept in dynamic spectrum allocation. To understand the interference existing in the spectrum, researchers usually monitor the interference in a fixed location and either focus on the cellular band or Wi-Fi band. In this study, we conduct experiments for collecting real-time spectrum data in indoor and outdoor environments with a mobile receiver, the spectrum analyzer. For outdoor, we mount the spectrum analyzer on a car seat and drive on the selected route in an urban area. We put the analyzer on a cart and moved it around in the laboratory for indoor. The frequency of interest in this study is 1.9 - 2.5 GHz, including both licensed and unlicensed bands. Temporal and frequency domain behavior is compared between licensed and unlicensed bands. We first normalize and binarize the data with a threshold. Then we calculate the spectrum occupancy by counting how many consecutive ones. Based on our observation, the spectrum occupancy of the outdoor environment is more remarkable than the indoor environment. The interference in the licensed band shows more variations in the frequency domain than that in the unlicensed band. This study provides a better understanding of the interference behavior for different environments and frequency bands.
