论蜂窝网络的弹性：国家漫游能有何帮助？
On the resilience of cellular networks: how can national roaming help?
AI总结：
本研究结合模型与公开数据评估国家范围内蜂窝网络覆盖与容量，发现国家漫游能显著提升网络弹性，在无故障时FDP可提高13%，FSP可提高55%。
摘要：
蜂窝网络已成为关键基础设施之一，因为许多服务越来越依赖无线连接。因此，量化现有蜂窝网络基础设施抵御潜在风险的弹性十分重要，这些风险从自然灾害到安全攻击，发生概率可能很低，但会导致服务严重中断。本文结合模型与来自国家机构关于移动网络运营商（MNO）基础设施、人口分布和城市化水平的公开数据，以评估国家范围内的蜂窝网络覆盖和容量。我们的分析提供了关于潜在薄弱环节的见解，这些薄弱环节需要改进，以确保较低的人口断连比例（FDP）和较高的人口满足比例（FSP）。作为一种弹性改进方法，我们研究了在哪些地区以及每个MNO能在多大程度上受益于基础设施共享或国家漫游，即所有MNO作为一个单一的国家运营商运作。作为我们的案例研究，我们关注荷兰蜂窝基础设施，并将风险建模为随机故障、地理区域内的相关故障以及用户数量的突然增加。我们的分析表明，在FDP和FSP方面，不同MNO和地理区域之间存在广泛的性能差异。然而，国家漫游始终提供显著的好处，例如，当网络正常运行无任何故障时，FDP可提高13%，FSP可提高55%。
英文摘要：
Cellular networks have become one of the critical infrastructures, as many services depend increasingly on wireless connectivity. Therefore, it is important to quantify the resilience of existing cellular network infrastructures against potential risks, ranging from natural disasters to security attacks, that might occur with a low probability but can lead to severe disruption of the services. In this paper, we combine models with public data from national bodies on mobile network operator (MNO) infrastructures, population distribution, and urbanity level to assess the coverage and capacity of a cellular network at a country scale. Our analysis offers insights on the potential weak points that need improvement to ensure a low fraction of disconnected population (FDP) and high fraction of satisfied population (FSP). As a resilience improvement approach, we investigate in which regions and to what extent each MNO can benefit from infrastructure sharing or national roaming, i.e., all MNOs act as a single national operator. As our case study, we focus on Dutch cellular infrastructure and model risks as random failures, correlated failures in a geographic region, and abrupt increase in the number of users. Our analysis shows that there is a wide performance difference across MNOs and geographic regions in terms of FDP and FSP. However, national roaming consistently offers significant benefits, e.g., up to 13% improvement in FDP and up to 55% in FSP when the networks function without any failures.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
