用于地面电视广播的5G NR MBMS物理层技术跟踪研究

Tracking and Research on 5G NR MBMS Physical Layer Technology for DTMB

3GPP Release14基于LTE的FeMBMS(也称EnTV项目)是第一个用于传输高塔高功率地面电视业务的移动宽带技术标准,在R16中,针对大台站间距的需求进行了相应的物理层性能提升。从系统架构角度,一种叫做"Receive-Only Mode"的技术模式为纯下行的free-to-air(FTA)业务形态或无SIM业务提供了支撑。但是这些优秀的能力目前仅仅在基于LTE架构FeMBMS技术下实现,R15开始的5G NR技术只针对单播,即传统的移动双向通信。因此后续基于5G NR架构,对用于HPHT场景的广播多播进行研究是非常有必要的,本文跟踪了国际上对于5G NR MBMS的最新研究进展情况,并与基于LTE的MBMS技术进行了分析比对研究。

LTE based FeMBMS(EnTV)in 3 GPP R14 is the first mobile broadband technology standard to support terrestrial broadcasting in HPHT,and its physical layer performance has already been improved in R16 according to the requirement of large station spacing.From the perspective of system architecture,a technical mode called"Receive-Only Mode"provides support for pure downlink free-to-air(FTA)service or SIM-free services.But these functions are only achieved with FeMBMS technology based on LTE structure.5 G NR technology started from R15 is only for unicast,that is,traditional mobile two-way communication.Therefore,it is necessary to study multicast for HPHT scene based on 5 G NR architecture.This paper tracks the latest research progress of 5 G NR MBMS,and compares it with LTE based MBMS technology.