摘要
Abstract
To investigate the foundations and future directions of 6G integrated space-terrestrial standardization,this paper first reviews the current development status of non-terrestrial networks(NTNs).The design experience and lessons learned from 5G in NTN-related aspects,including network architecture,practical deployment,and standardization processes,are then analyzed and summarized,serving as an important technical basis for 6G NTN evolution.The study further focuses on key enabling technologies for 6G integrated space-terrestrial networks,covering frame structure design,waveform optimization,access and synchronization mechanisms,coverage enhancement,satellite-terrestrial integrated positioning,and wireless spectrum sharing.Through a systematic discussion of these technical directions,this work aims to provide insights into the standardization roadmap and technological evolution of 6G integrated space-terrestrial networks,supporting the development of future network infrastructures with global coverage and intelligent integration.关键词
6G/5G-Advanced/国际标准/3GPP/非地面网络/传播时延/同步Key words
6G/5G-advanced/standardization/3GPP/non-terrestrial networks/propagation delay/synchronization分类
信息技术与安全科学
