Despite coverage enhancement in rural areas is one of the main requirements in next generations of wireless networks (i.e., 5G and 6G), the low expected profit prevents telecommunication providers from investing in such sparsely populated areas. Hence, it is required to design and deploy cost efficient alternatives for extending the cellular infrastructure to these regions. A concrete mathematical model that characterizes and clearly captures the aforementioned problem might be a key-enabler for studying the efficiency of any potential solution. Unfortunately, the commonly used mathematical tools that model large scale wireless networks are not designed to capture the unfairness, in terms of cellular coverage, suffered by exurban and rural areas. In big cities, in fact, cellular deployment is essentially capacity driven and thus cellular base station densities are maximum in the town centers and decline when getting far from them. In this paper, a new stochastic geometry-based model is implemented in order to show the coverage spatial variation among urban, suburban, and exurban settlements. Indeed, by implementing inhomogeneous Poisson point processes (PPPs) it is possible to study the performance metrics in a realistic scenario where terrestrial base stations (TBSs) are clustered around the urban center while outer aerial base stations (ABSs) are uniformly distributed outside an urban exclusion zone. Based on this, our simulation results can quantify the improvement, in terms of coverage probability, that even a surprisingly low density of ABSs can bring to peripheral regions depending on the extension of the exclusion zone, enabling us to draw insightful considerations.
翻译:尽管农村地区扩大了覆盖面,但农村地区是下一代无线网络(即5G和6G)的主要要求之一,低预期利润使电信供应商无法在人口稀少的地区投资,因此,需要设计和部署成本效益高的替代方案,将蜂窝基础设施扩展到这些地区。一个具体数学模型将上述问题定性并明确反映上述问题,这或许是研究任何潜在解决方案效率的关键增强因素。不幸的是,模拟大规模无线网络的常用数学工具在设计时,无法捕捉远城和农村地区在细胞覆盖方面遭受的不公平。在大城市,蜂窝部署基本上是由能力驱动的,因此蜂窝基地站的密度在城镇中心最大,远离这些中心时会下降。在本论文中,采用新的随机地理测量模型,以显示城市、郊区和城市以外住区之间的空间差异。事实上,通过采用不相容的Poisson点(PPPS)程序,有可能在现实的情景中研究性能度指标,在现实的情景中,在城市中心范围外的直径直径可径直的图像中,在城市基地基地的基点上,可以进行一个直径直径直径直的BS分组。