移动通信2025，Vol.49Issue(6)：11-18,8.DOI:10.3969/j.issn.1006-1010.20250410-0001
IoT-NTN TDD关键技术研究与标准化进展
Key Technologies and Standardization Progress of IoT-NTN TDD
摘要
Abstract
The 6G satellite-terrestrial integrated networks will achieve a profound integration between terrestrial communication and satellite communication.The Time Division Duplex(TDD)mode,owing to its low spectrum demand,simple terminal design,and compatibility with the asymmetric traffic,is particularly well-suited for the applications of the Internet of Things(IoT)for non-terrestrial networks(NTNs).Currently,the work item of IoT-NTN TDD has been approved by the 3rd Generation Partnership Project,indicating a broad application prospect for this technology.Firstly,this paper provides an overview of the development trends and industrial applications of the IoT-NTN TDD technology.Meanwhile,the challenges posed by factors such as transmission delay and cross-link interference are provided.Then,this paper introduces the standardization progress and key technologies,including TDD frame structure design,selective activation scheme,downlink common resource allocation,and slot resource allocation.Finally,the outlook of standardization work for IoT-NTN TDD is presented.关键词
物联网/非地面网络/时分双工Key words
Internet-of-things/non-terrestrial-network/time division duplex分类
电子信息工程引用本文复制引用
王玉震,焦凌霄,童建飞,章跃跃,严宏..IoT-NTN TDD关键技术研究与标准化进展[J].移动通信,2025,49(6):11-18,8.基金项目
国家重点研发计划"面向手机直连的全球运营天地融合总体架构"(2023YFB2904701) （2023YFB2904701）
