通信学报 ›› 2020, Vol. 41 ›› Issue (11): 22-29.doi: 10.11959/j.issn.1000-436x.2020236

• 专题:面向6G的智能无线通信关键技术 • 上一篇    下一篇

无人机无线网络覆盖与切换性能分析

尹博南,彭木根,刘晨熙   

  1. 北京邮电大学网络与交换技术国家重点实验室,北京 100876
  • 修回日期:2020-10-27 出版日期:2020-11-25 发布日期:2020-12-19
  • 作者简介:尹博南(1993- ),男,辽宁沈阳人,北京邮电大学博士生,主要研究方向为雾计算无线接入网络、无人机无线网络组网理论与性能|彭木根(1978- ),男,江西吉安人,博士,北京邮电大学教授、博士生导师,主要研究方向为智能化无线组网理论与关键技术|刘晨熙(1989- ),男,湖南益阳人,博士,北京邮电大学副研究员、博士生导师,主要研究方向为雾无线接入网络、网络智能、超可靠低时延通信和网络安全
  • 基金资助:
    国家自然科学基金资助项目(61471074);国家自然科学基金资助项目(62001047);北京市自然科学基金资助项目(JQ18016);中央高校基本科研业务费专项资金资助项目(2020RC09);国家高层次人才特殊支持计划基金资助项目

Analysis of UAV wireless network coverage and handover performance

Bonan YIN,Mugen PENG,Chenxi LIU   

  1. State Key Laboratory of Networking and Switching Technology,Beijing University of Posts and Telecommunications,Beijing 100876,China
  • Revised:2020-10-27 Online:2020-11-25 Published:2020-12-19
  • Supported by:
    The National Natural Science Foundation of China(61471074);The National Natural Science Foundation of China(62001047);The Beijing Natural Science Foundation(JQ18016);The Fundamental Research Funds for the Central Universities(2020RC09);The National Program for Special Support of Eminent Professionals

摘要:

针对无人机高移动性、飞行高度可控及视距信道概率高等使无人机无线网络的设计与部署存在多方面的挑战,且其组网性能是业界的焦点难点问题,分析了异构无人机无线网络的网络覆盖与切换性能,为无人机无线组网提供理论支撑。具体地,考虑无人机移动性导致的信道状态信息过时问题,基于随机几何理论,推导了异构无人机无线网络的切换概率、切换误差概率和覆盖概率的解析表达式,探究了无人机移动性、飞行高度和地面基站密度对上述性能的影响。研究表明,过时信道状态信息会造成切换误差,且随无人机移动速度和基站密度提升呈先增大后减小趋势。同时,无人机飞行高度比移动速度对覆盖概率的影响更加显著。

关键词: 无人机无线网络, 随机几何, 切换概率, 覆盖概率

Abstract:

For the characteristics of unmanned aerial vehicle (UAV),such as high mobility,adjustable height,and high probability of line-of-sight channels,which introduced multiple challenges to the design and deployment of current and future wireless network,and the networking performance of UAV was the focus and difficult issues in the industry,the network coverage and handoff performance of heterogeneous UAV wireless network was analyzed,which provided insights into UAV wireless networking.Specifically,considering the outdated channel state information introduced by the UAV’s mobility,analytical expressions of handover probability,handover error probability,and coverage probability for heterogeneous UAV wireless network were derived by utilizing the tools from stochastic geometry.In addition,the impacts of the UAV’s mobility,height,as well as the density of terrestrial base stations on the aforementioned performance metrics were investigated.It shows that the outdated channel state information caused handover error,which increases first and then decreases with the increase of UAV’s moving speed and density of base stations.Meanwhile,the impact of UAV’s flight height on coverage probability is more significant than that of moving speed.

Key words: unmanned aerial vehicle wireless network, stochastic geometry, handoff probability, coverage probability

中图分类号: 

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