TV White Space Based Wireless Broadband Internet Connectivity: A Case Study With Implementation Details and Performance Analysis
TV White Space Based Wireless Broadband Internet Connectivity: A Case Study With Implementation Details and Performance Analysis
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基于电视空白空间的无线宽带互联网连接：包含实施细节和性能分析的案例研究
DOI：
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发表时间：
2021
影响因子：
7.9
通讯作者：
S. Ekin
中科院分区：
文献类型：
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作者：
Md Zobaer Islam;J. O’Hara;Dylan Shadoan;Mostafa Ibrahim;S. Ekin
即使在当今通信系统先进的时代，世界各地用户密度低的偏远农村社区也缺乏高质量的宽带互联网服务。由于技术或地理挑战以及经济可行性较低，传统方式无法满足这些地区的需求。由于空闲TV（电视）频谱的无执照操作被世界上许多国家的当局批准，已经研究了被称为TV白色空间（TVWS）的那些频谱的各种应用。在许多文献和实施，TVWS已被发现是可行的，在提供优质的宽带互联网服务，贫困的农村社区。穿透障碍物、良好的非视线连接、远距离传输、更宽的水平波束宽度以及偏远农村地区大量未使用的电视频道是TVWS的一些有前途的功能，可以利用这些功能将农村社区连接到宽带互联网和相关的数字服务。我们通过在俄克拉荷马州斯蒂尔沃特进行的实验室测试和户外测试，以及为美国俄克拉荷马州蒂尔曼县农村地区的客户提供实时互联网服务，全面评估了基于TVWS的宽带互联网连接。已经使用所测量的接收信号数据在地理地图上创建了射频（RF）覆盖热图。此外，轮廓的接收功率，信噪比（SNR）和吞吐量进行了分析，对天线的方向性。本研究的目的是提供我们的TVWS试验的细节和从中吸取的教训，其次是性能分析，结果与理论的比较和未来的发展方向。
Even at the current age of sophisticated communication systems, remote rural communities with low user density throughout the world lack broadband Internet service of good quality. Traditional ways fall short to meet the demand of those regions due to technological or geographical challenges as well as less economic viability. Since the unlicensed operation of spare TV (Television) spectra was approved by the authorities in many countries of the world, various applications of those spectra, known as TV White Space (TVWS), have been researched. In many literature and implementations, TVWS has been found to be feasible in providing quality broadband Internet service to deprived rural communities. Penetration through obstacles, good non-line-of-sight connectivity, long-distance transmission, wider horizontal beam-width, and abundance of unused TV channels in remote rural regions are some of the promising features of TVWS which can be leveraged to connect rural communities to broadband Internet and related digital services. We made a comprehensive effort to evaluate TVWS based broadband Internet connectivity through laboratory testing and outdoor testing with a measurement campaign at Stillwater, Oklahoma and by providing live Internet service to a client in the rural area of Tillman County, Oklahoma, USA. Radio frequency (RF) coverage heatmaps have been created over the geographical map using the received signal data measured. Also, profiles of received power, signal to noise ratio (SNR) and throughput have been analyzed against antenna directionality. The purpose of this study is to provide the details of our TVWS trial and lessons learned from it, followed by performance analysis, comparison of results with theory and future directions.