摘要
地面5G基站提供低频控制信号,完成初始波束接入的控制,空中无人机基站为地面用户提供数据服务,地面5G基站与高空无人机构成的异构网络成为未来天地一体化通信的重要研究方向。基于波束扫描和下行链路控制导频复用技术,提出了一种面向无人机异构网络架构下初始波束关联机制,在给出系统覆盖率的上下界数学表达式的同时,通过仿真评估获得了更高波束成形增益对应的无人机部署优化参数。
The ground 5G base station provides low-frequency control signals to complete the control of the initial beam access.The aerial unmanned aerial vehicle(UAV) base station provides data services for the ground users.The heterogeneous network(Het Net)formed by the ground 5G base station and high-altitude UAV becomes an important research direction of integrated communication between heaven and earth in the future.In this paper, based on beam scanning and downlink control pilot multiplexing technology,an initial beam association mechanism for heterogeneous network architecture of UAV is proposed.While the upper and lower bounds of system coverage are given, the deployment optimization parameters corresponding to higher beamforming gain are obtained through simulation evaluation.
作者
张少伟
朱雪田
云翔
Zhang Shaowei;Zhu Xuetian;Yun Xiang(China Telecom Research Institute,Beijing 102209,China;China Unicom Network Technology Research Institute,Beijing 100048,China;Baicells Technologies Co.,Ltd.,Beijing 100044,China)
出处
《电子技术应用》
2020年第3期33-37,共5页
Application of Electronic Technique
基金
国家科技重大专项课题(2017ZX03001001)
关键词
无人机
初始波束关联
导频复用
异构网络
unmanned aerial vehicle(UAV)
initial beam association
pilots reused
heterogeneous network(HetNet)
