基于随机几何的星地融合组网下行成功传输概率分析

宋紫旭; 孙耀华; 李睿雯; 彭木根

doi:10.11959/j.issn.1000-0801.2025141

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基于随机几何的星地融合组网下行成功传输概率分析

专题：星地融合移动通信及卫星互联网 | 更新时间：2025-06-03

- 基于随机几何的星地融合组网下行成功传输概率分析
- Successful transmission probability analysis for satellite-terrestrial integrated networks based on stochastic geometry
- 电信科学 2025年41卷第5期页码：72-83
- 作者机构：
  
  北京邮电大学网络与交换技术全国重点实验室，北京 100876
- 作者简介：
  
  [ "宋紫旭（2002- ），女，北京邮电大学网络与交换技术全国重点实验室硕士生，主要研究方向为星地融合无线网络。" ]
  [ "孙耀华（1992- ），男，博士，北京邮电大学副教授，主要研究方向为低轨卫星通信和无线接入网络智能化。" ]
  [ "李睿雯（2001- ），女，北京邮电大学网络与交换技术全国重点实验室硕士生，主要研究方向为星地融合无线网络。" ]
  [ "彭木根（1978- ），男，博士，北京邮电大学网络与交换技术全国重点实验室教授，主要研究方向为空间信息通信、通感算一体化、雾无线接入网络等。" ]
- 基金信息：
  
  国家自然科学基金资助项目(62371071)
- DOI：10.11959/j.issn.1000-0801.2025141
  中图分类号： TP393
- 收稿：2025-03-12，
  
  修回：2025-05-14，
  
  纸质出版：2025-05-20
- 稿件说明：
移动端阅览
宋紫旭,孙耀华,李睿雯等.基于随机几何的星地融合组网下行成功传输概率分析[J].电信科学,2025,41(05):72-83.

SONG Zixu,SUN Yaohua,LI Ruiwen,et al.Successful transmission probability analysis for satellite-terrestrial integrated networks based on stochastic geometry[J].Telecommunications Science,2025,41(05):72-83.
宋紫旭,孙耀华,李睿雯等.基于随机几何的星地融合组网下行成功传输概率分析[J].电信科学,2025,41(05):72-83. DOI： 10.11959/j.issn.1000-0801.2025141.

SONG Zixu,SUN Yaohua,LI Ruiwen,et al.Successful transmission probability analysis for satellite-terrestrial integrated networks based on stochastic geometry[J].Telecommunications Science,2025,41(05):72-83. DOI： 10.11959/j.issn.1000-0801.2025141.

摘要

星地融合组网能够有效补充地面蜂窝网络覆盖，满足6G全时全域通信需求。为深入分析星地融合组网下行成功传输概率，利用随机几何工具，采用二项式点过程和泊松点过程分别对卫星和地面基站的空间分布进行建模，推导了典型用户下行成功传输概率表达式。通过蒙特卡洛仿真验证了理论推导的正确性，并研究了星地异频组网下地面基站部署空洞半径、空间链路中正交频率信道的数量和基站密度等网络参数对下行成功传输概率的影响。研究结果表明，星地融合组网可有效解决地面基站存在部署空洞的问题；在一定范围内提高卫星频域信道划分数和增加地面基站密度均可有效提高下行成功传输概率。

Abstract

Satellite-terrestrial integrated network can effectively complement the coverage of terrestrial cellular networks

meeting the full-time

full-area communication requirements of the 6G.To thoroughly analyze the downlink successful transmission probability in satellite-terrestrial integrated networks

stochastic geometry tools were employed

where binomial point processes (BPP) and Poisson point processes (PPP) were adopted to model the spatial distributions of satellites and terrestrial base stations (BSs). A closed-form expression for the downlink successful transmission probability of a typical user was derived. The accuracy of the theoretical derivation was verified through Monte Carlo simulations

and the impacts of key network parameters—including the deployment void radius of terrestrial BSs

the number of orthogonal frequency channels in spatial links

and BSs density—on the downlink successful transmission probability were investigated under satellite-terrestrial heterogeneous frequency networking. The results indicated that: the satellite-terrestrial integrated network effectively addressed the deployment void problem of terrestrial BSs; within a certain range

increasing the number of satellite frequency-domain channel partitions or terrestrial BSs density significantly improved the downlink successful transmission probability.

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references

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