基于NR的5G多播/广播关键技术

doi:10.11959/j.issn.1000-0801.2022040

Abstract

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

CLC Number:

TN929.5

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

Figures/Tables 8

References 25

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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

Key technologies of NR multicast and broadcast services

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