5G NR性能需求和物理层设计要点

Performance requirement and physical layer’s design point of 5G NR

本文首先介绍了5G的四大场景,然后提供了5GNR物理层基本参数以及NR物理层参数与LTE物理层参数的对比,最后给出了5GNR物理层的设计要点,包括更大的频率范围、更大且更为灵活的信道带宽、多种信道栅格、同步栅格、灵活的子载波间隔、灵活的帧结构和自适应部分带宽,并对数据信道、控制信道、参考信号和物理随机接入信道等方面提出改进思路。

Firstly,this paper introduces four scenarios of 5G NR including continuous wide area coverage,hot spot high capacity,low power and massive connection,low delay and high reliability.Then this paper provides the parameters of 5G NR physical layer,and provides the comparison between 5G physical layer and LTE physical layer.Finally,this paper offers the design point of 5G NR physical layer which includes of larger frequency range,larger and more flexible channel bandwidth,multi-channel raster,synchronization raster,flexible sub-carrier spacing,flexible frame structure,adaptive bandwidth part,and the evolution in data channels,control channels,reference signals,physical random access channel.