【摘要】 3GPP Release17支持基于NR的组播广播技术，通过使多个终端接收相同传输数据提高频谱资源利用率。为保证组播服务正常，基站选择编码调制方案时须考虑组内接收条件最差的终端，并根据信道环境切换单播/组播服务方式。本文阐述了动态切换门限的评判指标与仿真流程，按照700MHz频段5G系统特定参数，给出了仿真区域内5G NR网络的动态切换门限的仿真结果。更多还原

【Abstract】 3GPP Release17 supports the multicast broadcasting technology based on NR, and improves the utilization of spectrum resources by enabling multiple terminals to receive the same transmission data. To ensure normal multicast services, the base station must consider the terminal with the worst reception conditions within the group when selecting a coding modulation scheme, and switch between unicast/multicast service modes based on the channel environment. This article elaborates on the evaluation indicators and simulation process of dynamic switching threshold. Based on the specific parameters of the 5G system in the 700MHz frequency band, the simulation results of the dynamic switching threshold of the 5G NR network in the simulation area are presented.更多还原