Standardization and industry progress of 5G Ultra Reliable and Low Latency Communications

doi:10.12267/j.issn.2096-5931.2022.04.007

Abstract

Abstract:

URLLC is one of the three major scenarios of 5G. To promote the development of 5G industry, first briefly introduce the current status and future evolution of URLLC standards, and sort out the business requirements for latency and reliability in different scenarios in China. Then introduces the research and development status of URLLC key technologies. Finally, gives suggestions on industry development strategy of China.

Key words: 5G, URLLC, key technology, test, industry development strategy

CLC Number:

TN929.5

LI Zhuofang, LIU Huimin, XIE Bosen. Standardization and industry progress of 5G Ultra Reliable and Low Latency Communications[J]. Information and Communications Technology and Policy, 2022, 48(4): 37-42.

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URL:

http://ictp.caict.ac.cn/EN/10.12267/j.issn.2096-5931.2022.04.007

http://ictp.caict.ac.cn/EN/Y2022/V48/I4/37

Figures/Tables 3

References 8

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应用场景	业务举例	空口时延需求/ms	可靠性需求
AR/VR	音视频传输	10	99.99%
AR/VR	远程医疗	1	99.999%
工业互联网	云化PLC	10	99.999%
工业互联网	工业自动化	1	99.9999%
智慧交通	编队行驶	20	99.999%
智慧交通	远程驾驶	5	99.999%
智能电网	配网差动保护	7	99.999%
智能电网	电力分配	5	99.9999%

应用场景	业务举例	空口时延需求/ms	可靠性需求
AR/VR	音视频传输	10	99.99%
AR/VR	远程医疗	1	99.999%
工业互联网	云化PLC	10	99.999%
工业互联网	工业自动化	1	99.9999%
智慧交通	编队行驶	20	99.999%
智慧交通	远程驾驶	5	99.999%
智能电网	配网差动保护	7	99.999%
智能电网	电力分配	5	99.9999%

关键技术	R15	R16	R17(在研)
低时延	灵活帧结构(DS帧)	基于sub-slot反馈HARQ	UE内资源抢占/复用
	非时隙(Non-slot)调度	mini-slot(任意符号,多MO)
	上行免授权调度配置	UE间上行资源抢占/复用
	自包含时隙调度	上行免调度传输增强
	下行资源抢占机制	基于span的PDCCH检测
高可靠	低码率MCS/CQI设计	双HARQ-ACK码本	HARQ-ACK反馈增强
	PDCCH高聚合等级	UCI增强
	PDSCH/PUSCH重复传输	PUSCH重复传输增强
	PDCP重复传输(2条冗余)	PDCP重复增强
确定性技术		SIB9高精度授时	授时传播时延补偿
		以太网头压缩
		时敏通信辅助信息
		下行半持续调度

关键技术	R15	R16	R17(在研)
低时延	灵活帧结构(DS帧)	基于sub-slot反馈HARQ	UE内资源抢占/复用
	非时隙(Non-slot)调度	mini-slot(任意符号,多MO)
	上行免授权调度配置	UE间上行资源抢占/复用
	自包含时隙调度	上行免调度传输增强
	下行资源抢占机制	基于span的PDCCH检测
高可靠	低码率MCS/CQI设计	双HARQ-ACK码本	HARQ-ACK反馈增强
	PDCCH高聚合等级	UCI增强
	PDSCH/PUSCH重复传输	PUSCH重复传输增强
	PDCP重复传输(2条冗余)	PDCP重复增强
确定性技术		SIB9高精度授时	授时传播时延补偿
		以太网头压缩
		时敏通信辅助信息
		下行半持续调度

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