【摘要】 随着低空经济的快速发展，常规的地面通信网络主要面向地面用户设计，难以满足低空用户在覆盖、可靠性与时延方面的通信需求。无人机搭载轻量化基站作为空中基站，能够有效辅助地面蜂窝网络构建三维立体通信架构，从而更好地服务低空经济。为简化无人机基站的设计与部署，基于随机几何理论，提出了一种以区域为中心的协作多点（CoMP）传输策略。在该框架下，对典型用户接收信干比（SIR）的元分布以及网络频谱效率进行了系统的解析建模与性能分析。研究结果表明，与传统的以用户为中心的CoMP策略相比，所提出的以区域为中心方案通过形成更稳定的协作结构，在中等至高信干比条件下展现出更高的可靠性和频谱效率，同时显著降低了协调信令开销与传输时延，为低空通信网络的设计与优化提供了新的思路和参考。更多还原

【Abstract】 With the rapid development of the low-altitude economy,conventional terrestrial communication networks,which are primarily designed for ground users,struggle to satisfy the communication demands of low-altitude users in terms of coverage,reliability,and latency.Deploying lightweight base stations on unmanned aerial vehicles(UAVs) as aerial base stations can effectively assist terrestrial cellular networks to establish a three-dimensional communication architecture,thereby providing enhanced support for low-altitude economy.To simplify the design and deployment of UAV base stations,this paper proposes a region-centric coordinated multi-point(CoMP) transmission strategy based on stochastic geometry theory.Within this framework,the meta-distribution of the received signal-tointerference ratio(SIR) for the typical user and the spectral efficiency of the network are systematically modeled and analyzed.The simulation results demonstrate that,compared with the conventional user-centric CoMP strategy,the proposed region-centric approach forms a more stable cooperation structure,exhibits higher reliability and spectral efficiency under moderate to high SIR conditions,while significantly reducing coordination signaling overhead and transmission delay.These findings provide new insights and references for the design and optimization of lowaltitude communication networks.更多还原