General Introduction of Non General Introduction of Non-Terrestrial Networks for New Radio

摘要

In the new radio(NR)access technology,non-terrestrial networks(NTN)are intro-duced to meet the requirement of anywhere and anytime connections from the world market.With the introduction of NTN,the NR system is able to offer the wide-area coverage and en-sure the service availability for users.In this paper,the general aspects of NTN are intro-duced,including the NTN architecture overview,the impact of NTN on next-generation radio access network(NG-RAN)interface functions,mobility scenarios and other NTN related is-sues.The current progress in 3GPP Release 17 is also provided.