基于NR的5G多播/广播关键技术

doi:10.11959/j.issn.1000-0801.2022040

电信科学 ›› 2022, Vol. 38 ›› Issue (7): 175-183.doi: 10.11959/j.issn.1000-0801.2022040

基于NR的5G多播/广播关键技术

徐霞艳

中国信息通信研究院，北京 100191

修回日期:2022-03-04 出版日期:2022-07-20 发布日期:2022-07-01
作者简介:徐霞艳（1976- ），男，中国信息通信研究院高级工程师，主要研究方向为无线通信技术的标准化、技术试验验证等
基金资助:
2021年工业和信息化部产业技术基础公共服务平台资助项目“面向5G高速大连接物联网的产业技术基础公共服务平台”(2021-H02A-1-1)

Key technologies of NR multicast and broadcast services

Xiayan XU

China Academy of Information and Communication Technology, Beijing 100191, China

Revised:2022-03-04 Online:2022-07-20 Published:2022-07-01
Supported by:
2021 Industrial Technology Basis Public Service Platform Project of Ministry of Industry and Information "Industrial Technology Basis Public Service Platform for 5G High-speed Massive Internet of Things"(2021-H02A-1-1)

摘要/Abstract

摘要：

交互式网络电视（internet protocol television，IPTV）、群组通信等应用具有明显的多播/广播业务特征，5G蜂窝移动通信系统需要高效支持这类应用数据的传输。首先，按照多播/广播业务数据从5G核心网经由基站到终端的不同传输方式分析了 5G 多播/广播系统的基本架构；然后，从无线空口协议栈、物理层与高层协议增强、业务过程与业务连续性等方面对5G多播/广播无线传输技术进行了详细分析；最后，对5G多播/广播技术的后续演进方向进行了展望。

关键词: 5GMBS, 多播/广播, 无线传输技术

Abstract:

Internet protocol television (IPTV), group communication and other applications are regarded as multicast/broadcast services.5G cellular mobile communication system should support the transmission of such application data efficiently.Firstly, the basic architecture of 5G multicast/broadcast system based on NR was analyzed according to the different transmission modes of multicast/broadcast application data from 5GC to UE via gNB.Then, the key technologies of 5G multicast/broadcast radio transmission were analyzed in detail from the aspects of air interface protocol stack, physical layer and higher layer protocol enhancements, service process and service continuity, etc.Finally, the evolution trends of 5G multicast/broadcast technology were prospected.

Key words: 5G MBS, multicast and broadcast, radio transmission technology

中图分类号:

TN929.5

徐霞艳. 基于NR的5G多播/广播关键技术[J]. 电信科学, 2022, 38(7): 175-183.

Xiayan XU. Key technologies of NR multicast and broadcast services[J]. Telecommunications Science, 2022, 38(7): 175-183.

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5G MBS发送方案	核心网-基站间发送机制	空口发送方法	适用业务
方案1	MBS 共享分发机制	PTM	多播、广播
方案2	MBS 共享分发机制	PTP	多播
方案3	MBS 共享分发机制	PTP/PTM 动态切换	多播
方案4	MBS 独立分发机制	PTP	多播

基于NR的5G多播/广播关键技术

Key technologies of NR multicast and broadcast services

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