专题:5G
5G非授权频段组网技术
徐珉,胡南,李男
(中国移动通信有限公司研究院,北京100053)
摘要:随着移动通信业务需求的不断增长,授权频段的短缺日益明显,5G网络亦开始考虑在非授权频段的
部署,即使用NR协议在非授权频段提供接入服务。5G非授权频段组网的主要挑战是在5G新技术特性下支
持LBT机制,保障同已有非授权全频段系统(WLAN、LTE LAA等)的公平性,合理共享频谱。从LBT机
制的演进入手,分析了LBT对5G非授权频段组网的影响,归纳了相关的标准化进展及挑战,并针对突出的
关键技术问题提出可行的创新解决方案,保障5G非授权频段组网性能,最小化LBT失败带来的影响。
关键词:5G;非授权频段;LBT
中图分类号:TP393
文献标识码:A
doi:10.1
19590.issn.1000-0801.2019178
5G--based
unlicensed
networkingin
spectrum
XUMin,HU
Nan
Nan,LI
ChmaMobile Research
100053,China
Institute,Beijing
Abstract:Due to the
demand for mobile communication
of licensed
frequency
bands
growing
services,the shortage
is
more and more obvious.Therefore 5G networks
theNRprotocol in unlicensed
in the unlicensed
challenge
becoming
begin to consider deployment
spec·
to
access services.11he main
provide
of5G
trum,that is,to
employ
spectrum
5Gnewtechnical features and thus
ofLBT on 5Gnetwork-
networking in theunlicensed spectrmn is to support LBTmechanismconsidering
to
fairness with
as well as efficient
spectrum sharing,the impact
guarantee
existing systems
was analyzed,the relevant standardization
in the unlicensed
and
WaS summarized.
progress
technical issues to minimizethe ofLBTfailure
impact
ing
spectrum
challenges
Feasible and innovative solutions were
for some
key
proposed
and thus to ensure the
of5G
performance
networking in theunlicensed spectrum.
beforetalk
spectrum,listen
unlicensed
words:5G
Key
4G移动通信通过合理的频率规划和网络部署实
现了无缝覆盖和高频谱效率,以极高的可靠性满
足了用户从语音到多媒体业务等多样化的需求。
1
引言
作为工作在授权频段的无线通信系统之一,
收稿日期:2019-06-01;修回日期:2019-07-01
基金项目:国家科技重大专项基金资助项目(No.2017ZX03001028)
Item:TheNational Scienceand
Foundation
Technology Major Project ofChina(No.2017ZX03001028)
2019178.1
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