DSS中LTE/NR物理层上行配置方法研究

Research on DSS uplink physical layer configuration

4G/5G动态频谱共享(Dynamic Spectrum Sharing,DSS)技术能够更高效地利用有限的低频频谱资源,是4G向5G平滑演进的重要手段。设计DSS运行于授权LTE频段的关键点之一是解决4G LTE和5G NR上行物理层信道/信号时频冲突问题。针对2.1 GHz DSS场景下的上行物理资源分配冲突,从时域、频域、码域等多维度研究LTE/NR上行物理信道和参考信号格式选择和资源占用,结合现网负载情况及5G网络演进,提出一种基于业务比例的DSS上行时频资源分配方法,为DSS部署中物理层上行配置提供合理化建议。

Dynamic Spectrum Sharing(DSS)is emerging as an important technology for the smooth evolution to 5G,which can effectively improve the spectrum utilization efficiency of low frequency bands.One of the key points for the design and operation of DSS is to solve the problem of 4G LTE and 5G NR uplink physical layer conflicts.In this paper,the format selection and resource allocation for uplink(UL)physical channel and reference signal are studied in multiple dimensions.And a load-based uplink resource allocation method is proposed to provide configurations for DSS deployment.