低空3.5 GHz双载波网络覆盖解决方案研究  

Research on the coverage solution of the dual-carrier network at 3.5 GHz in low-altitude areas

作　　者：魏明烁 谢伟良[1,2] WEI Mingshuo;XIE Weiliang(Research Institute of China Telecom Co.,Ltd.,Beijing 102209,China;China Telecom Group Co.,Ltd.,Beijing 100033,China)

机构地区：[1]中国电信股份有限公司研究院,北京102209 [2]中国电信集团有限公司,北京100033

出　　处：《电信科学》2025年第3期87-95,共9页Telecommunications Science

基　　金：移动信息网络国家科技重大专项(No.2024ZD1300200)。

摘　　要：低空经济在现代社会中展现出巨大的发展潜力和战略价值。然而,低空经济的发展同样面临着诸多挑战。目前,地面网络对低空的覆盖主要依赖于波束的上旁瓣,这种覆盖方式难以满足低空立体、广域覆盖的需求。鉴于此,迫切需要对低空网络的覆盖质量进行提升。在低空经济活动中,无人机作为一种典型的应用工具,确保无人机能够实现网络的平滑切换和稳定接入,成为一个关键的研究议题。利用3.5 GHz频段覆盖低空,提出双载波空地异频和双载波空地同频两种方案,并探讨在无人机垂直起降过程中如何部署以保障其网络接入的稳定性与切换的平滑性。通过现场测试对所提方案进行了验证与分析,两种方案均可以提升低空覆盖的性能,同时针对无人机垂直起降提出了网络部署建议。Low-altitude economy,as an emerging comprehensive economic form,is widely concerned.Great develop ment potential and strategic value are demonstrated by the low-altitude economy in modern society.However,the de velopment of low-altitude economy also faces with numerous challenges.At present,the coverage of low-altitude area by the ground network mainly relies on the upper sidelobes of the beam,and this coverage method is difficult to meet the requirements of three-dimensional and wide-area coverage of low-altitude area.In view of this,it is urgent to im prove the coverage quality of the low-altitude network.In low-altitude economic activities,as a typical application tool,ensuring that UAV could achieve smooth network handover and stable access could become a key research topic.The 3.5 GHz frequency band was utilized to cover the low-altitude area,and two schemes,namely dual-carrier air ground different-frequency and dual-carrier air-ground same-frequency,were proposed.Also,how to deploy during the vertical take-off and landing of UAV to ensure the stability of network access and the smoothness of handover was explored.The proposed schemes were verified and analyzed through field tests.Both schemes can improve the perfor mance of low-altitude coverage.At the same time,network deployment suggestions are put forward for the vertical take-off and landing of UAV.

关 键 词：低空经济 广域覆盖 无人机 垂直起降 

分 类 号：TN929.5[电子电信—通信与信息系统]