LTE终端语音解决方案现状及下一步演进

doi:10.11959/j.issn.1000-0801.2015074

Abstract

Abstract:

As the final voice solution for LTE,VoLTE has become the key research point of the industry.Several existing voice solutions of LTE user equipment were compared and analyzed in details.Technical advantages and unsolved problems of VoLTE which is based on pure PS network and IMS system were mainly discussed from the prospective of the LTE terminal.The technical characteristics and evolution direction of VoLTE were mentioned in the end.

Key words: LTE terminal, VoLTE, CSFB, SV-LTE, SR-LTE

Jing Zhou,Yu Shi. Existing Voice Solutions and Evolution for LTE Terminal[J]. Telecommunications Science, 2015, 31(3): 13-21.

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References 10

1	GSMA IR.92.V7.0.IMS Profile for Voice and SMS, 2013
2	GSMA IR.94.V6.0.IMS Profile for Video Service, 2013
3	中国移动通信集团公司.VoLTE 技术原理. , 2013China Mobile.Technical principles of VoLTE. , 2013
4	3GPP TS 23.207.End-to-End Quality of Service（QoS）Concept and Architecture, 2012
5	3GPP TS 23.228.IP Multimedia Subsystem（IMS）Stage2, 2013
6	3GPP TS 23.216.Technical Specification Group Service and System Aspects; Single Radio Voice Call Continuity（SRVCC）;Stage 2, 2013
7	3GPP TS 24.173.IMS Multimedia Telephony Service and Supplementary Services; Stage 3, 2013
8	3GPP TS 24.229.IP Multimedia Call Control Protocol Based on Session Initiation Protocol（SIP）and Session Description Protocol （SDP）; Stage 3, 2012
9	谢斌 . 终端 VoLTE 和 RCS 的共存研究. 电信技术， 2013（9）:71～74 Xie B . Study on coexistence of VoLTE and RCS. Telecommunications Technology, 2013（9）:71～74
10	李文政 . LTE语音，运营商的难题. 广东通信技术， 2013（9）:2～6 Li W Y . Voice solution for LTE,the problem for operators. Guangdong Communication Technology, 2013（9）:2～6

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3G制式	LTE制式	运营商	语音方案（初期）	语音方案（后期）
WCDMA	FDD	AT＆T	CSFB	VoLTE（已部署）
	TDD	Softbank	CSFB	VoLTE（已部署）
	FDD+TDD	中国联通	CSFB	VoLTE（未部署）
CDMA	FDD	Verizon	SV-LTE	VoLTE（已部署）
		KDDI	elxCSFB	VoLTE（已部署）
	FDD+TDD	中国电信	SR-LTE/SV-LTE	VoLTE（未部署）
TD-SCDMA	TDD	中国移动	CSFB/SG-LTE	VoLTE（正在部署）

方案	SV-LTE	SG-LTE	SR-LTE	CSFB	1xCSFB	VoLTE with SRVCC
呼叫时延	CS呼叫时间	CS呼叫时间	CS呼叫时间	长于CS呼叫时长	长于CS呼叫时长	短于CS呼叫时长
语音数据业务并发	支持	支持	不支持	回落WCDMA支持	不支持	支持
语音连续性	支持	支持	支持	支持	支持	支持
终端	成本高、功耗大	成本高、功耗大	成本低、产业链薄弱	成本低、功耗低、产业链强	功耗低、产业链薄弱	标准实现方案，产业链有保证
网络要求	无	无	软件升级	网络改造	网络改造	需部署IMS
新业务提供	原有语音业务	原有语音业务	原有语音业务	原有语音业务	原有语音业务	高清语音、视频等RCS业务

QCI	资源类型	优先级	时延/ms	误码率	业务
1	GBR	2	100	10^-2	语音会话
2	GBR	4	150	10^-3	视频会话（实时业务）
8/9	non-GBR	8/9	300	10^-6	视频（缓存业务）、TCP业务

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Existing Voice Solutions and Evolution for LTE Terminal

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