Ultra-Dense LEO Satellite-Based Communication Systems: A Novel Modeling Technique
Ultra-Dense LEO Satellite-Based Communication Systems: A Novel Modeling Technique
复制标题
超密集 LEO 卫星通信系统：一种新颖的建模技术
DOI：
10.1109/mcom.001.2100800
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发表时间：
2021
影响因子：
11.2
通讯作者：
Mohamed
中科院分区：
文献类型：
--
作者：
Ruibo Wang;Mustafa A. Kishk;Mohamed
低轨卫星以其低时延、大容量、无缝覆盖全球等特点，在平等接入网络中扮演着不可或缺的角色。对于这样一个前所未有的广泛的不规则系统，随机几何（SG）是一种合适的研究方法。SG模型不仅可以科普日益增长的网络规模，而且可以准确地分析和估计网络的性能。本文研究了几种标准的卫星分布模型和星地信道模型。在非技术描述中介绍了系统级度量，例如覆盖概率及其中间值。研究了网关密度、卫星数目和高度对时延和覆盖概率的影响。最后，本文提出了基于SG的LEO卫星系统分析可能面临的挑战和相应的解决方案。
Low Earth orbit (LEO) satellite plays an indispensable role in the equal access network because of its low latency, large capacity, and seamless global coverage. For such an unprecedented extensive irregular system, stochastic geometry (SG) is a suitable research method. The SG model can not only cope with the increasing network scale, but also accurately analyze and estimate the network's performance. Several standard satellite distribution models and satellite-ground channel models are investigated in this article. System-level metrics such as coverage probability and their intermediates are introduced in the non-technical description. Then the influence of gateway density, and the number and height of satellites on latency and coverage probability is studied. Finally, this article presents the possible challenges and corresponding solutions for the SG-based LEO satellite system analysis.