摘要
3GPP在R14和R16版本研究制定了基于LTE空口的地面广播标准,R17和R18版本基于5G NR研究制定了5G多播广播标准,其仅适用于低塔低功率单站覆盖,基于NR来发展高功率大塔地面广播是未来一个重要的发展方向。本文介绍了5G NR多播广播技术,对比了5G NR与LTE无线传输技术,研究了波形参数集、信道编码、带宽和多路复用、控制信道和同步机制、交织等面向NR地面广播的增强技术,为5G NR面向HPHT的地面广播演进提供技术参考。
3GPP has developed LTE-based terrestrial broadcast in R14 and R16 versions,while R17 and R18 versions have developed 5G multicast broadcasting standards,which are only applicable to low-power single station coverage in low-power towers.Developing high power high tower terrestrial broadcast based on NR is an important direction in the future.This article introduces 5G NR multicast broadcasting technology,compares 5G NR with LTE technology,and studies enhancement technologies for NR ground broadcasting,such as numerology,channel coding,bandwidth and multiplexing,control channel and synchronization mechanism,interleaving,etc.,providing technical references for the evolution of 5G NR terrestrial broadcast in HPHT scenario.
作者
肖婧婷
张宇
胡军
夏治平
Xiao Jingting;Zhang Yu;Hu Jun;Xia Zhiping(Academy of Broadcasting Science,NRTA,Beijing 100866,China)
出处
《广播与电视技术》
2023年第10期23-30,共8页
Radio & TV Broadcast Engineering
基金
国家广播电视总局广播电视科学研究院2022年基本科研业务费课题“5G组播广播技术标准研究及测试终端开发”(项目编号:JBKY20220010)资助。
