VoNR语音解决方案应用研究

doi:10.11959/j.issn.1000-0801.2022100

Abstract

Abstract:

In the 5G era, in order to improve user perception, shorten call setup delay, and enhance the clarity of real-time voice communication, 3GPP standard introduces the VoNR solution.VoNR is to allow voice, video and data services to be carried on the 5G network, let users experience the high-definition and high-quality audio and video call services, and enjoy 5G high-speed data Internet services while calls.The VoNR technical characteristics and the VoNR solution implementation effect were deeply analyzed.The current challenges faced by the VoNR solution were presented, which provided technical reference for the subsequent nationwide implementation of VoNR.

Key words: 5G, 3GPP, VoNR

CLC Number:

TP393

Bei LI, Guanghai LIU, Tian XIAO, Yuhua HU, Hangbo ZHENG, Chen CHENG, Yifan WU, Xiuzhen HUANG. Research on VoNR solution application[J]. Telecommunications Science, 2022, 38(5): 149-157.

Figures/Tables 10

References 15

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性能	EPS Fallback	VoNR
无线网语音承载	LTE	NR
网络要求	4G/5G须重叠覆盖	无
呼叫时延	2.5～5 s	1.2～2 s
语音编码方式	AMR-WB编码速率：6.6～23.85 kbit/s；覆盖音频带宽：50 Hz～8 kHz	EVS编码速率：5.9～128 kbit/s；扩展音频带宽：50 Hz～16 kHz，支持人类听觉的全带宽、高娱乐品质的音乐编码
视频编码方式	H.264/高级视频编码（advanced video coding，AVC）	H.265/高效视频编码（high efficiency video coding，HEVC）演进到H.266/新一代国际视频编码（versatile video coding，VVC），相比上一代视频大小大幅减少
VR应用结合	—	3GPP Release 16定义集成视觉增强系统（integrated visual augmentation system，IVAS）
		语音编码标准，支持更好的抗丢包能力，可面向VR应用带来沉浸的效果，还能在EVS的基础上进一步提升抗丢包能力

语音方式		5G VoNR			4G VoLTE
编码方式	窄带增强型语音通话服务（EVS-NB）	宽带增强型语音通话服务（EVS-WB）	超宽带增强型语音通话服务（EVS-SWB）	全频带增强型语音通话服务（EVS-FB）	宽带自适应多速率编码（AMR-WB）
支持的语音编码速率/(kbit·s^-1)	5.9/7.2/8.0/9.6/13.2/16.4/24.4	5.9/7.2/8.0/9.6/13.2/16.4/24.4/32/48/64/96/128	9.6/13.2/16.4/24.4/32/48/64/96/128	16.4/24.4/32/48/64/96/128	6.6/8.85/12.65/14.25/15.85/18.25/19.85/23.05/23.85
语音业务承载组合	SRB1+SRB2+1×AM DRB+1×UM DRB				SRB0+SRB1+SRB2+2×AM DRB+1×UM DRB
视频业务承载组合	SRB1+SRB2+1×AM DRB+2×UM DRB				SRB0+SRB1+SRB2+2×AMDRB+2×UM DRB
QoS承载	5QI=1：语音承载；5QI=2：视频承载；5QI=5：SIP信令承载；5QI=6/8/9：一般上网业务承载
终端功耗	BWP+C-DRX				DRX

测试业务	测试场景	语音接通率	呼叫建立时延/ms	MOS均值	掉话率
VoNR互通	面场景DT测试	100%	1 642.03	3.96	0%
	4G与5G边界切换	100%	2 932	3.94	0%
	机场高速	100%	3 067.16	3.83	0%
	异设备厂商边界	100%	3 480.36	3.76	0%
VoNR与非VoNR终端互通	面场景DT测试	100%	3 244.53	3.91	0%
	4G与5G边界切换	100%	3 871.88	3.85	0%
	机场高速	100%	4 069.5	3.68	0%
	异设备厂商边界	100%	4 432.72	3.64	0%

位置	测试终端	平均RSRP/dBm	平均SINR/dB	平均MOS	叫建立时延/ms
-100 dBm点位	终端E（芯片X）	-98.91	3.44	4.26	2 691
-105 dBm点位		-105.5	-0.07	4.21	2 648
-110 dBm点位		-109.7	-3.78	4.03	2 984
-115 dBm点位		-115.1	-2.93	4.1	2 640
-100 dBm点位	终端D（芯片Y）	-101.01	3.46	4.03	2 273
-105 dBm点位		-104.32	-0.81	3.05	2 436
-110 dBm点位		-108.39	-3.11	3.16	2 884
-115 dBm点位		-115.46	-2.81	3.18	2 459

C-DRX参数名称	CDRX1	CDRX2	CDRX3
DRX-Long Cycle/ms	40	40	40
DRX-onDuration Timer/ms	10	8	5
DRX-inactivity Timer/ms	10	8	3
DRX-HARQ-RTT-Timer DL/symbol	56	56	56
DRX-HARQ-RTT-Timer UL/symbol	56	56	56
DRX-Retransmission Timer DL/slot	16	8	8
DRX-Retransmission Timer UL/slot	16	8	8

Research on VoNR solution application

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