摘要
首先介绍了5G NR SS/PBCH块的结构和候选SS/PBCH块的时间位置,每个SS/PBCH块在频域上由240个连续的子载波、在时域上由4个OFDM符号组成,根据SS/PBCH块子载波间隔的不同,候选SS/PBCH块的时间位置共有5种Case。然后分析了5G NR的下行同步过程,包括搜索同步信号、解码PBCH、解码SIB1和其他SI。最后给出了下行同步过程的参数配置建议,建议根据基站类型、小区类型设置SS/PBCH块的数量,根据基站类型、服务需求设置SS/PBCH周期,PCI设置应避免MOD 4干扰。
Firstly,it introduces the structure of SS/PBCH bock and the time location of candidate SS/PBCH blocks.An SS/PBCH block consists of 240 contiguous subcarriers in the frequency domain and 4 OFDM symbols in the time domain.There are 5 cases for the time location of candidate SS/PBCH blocks according to the subcarrier spacing of SS/PBCH blocks.Secondly,it analyzes the downlink synchronization process of 5G NR which includes searching synchronization signals,decoding PBCH,decoding SIB1 and other SI.Finally,it gives the suggestion of parameters configuration for synchronization process.It suggests that the number of SS/PBCH blocks should be configured according to the base station types and cell types,and the periodicity of SS/PBCH blocks should be configured according to the base station types and service requirements,PCI configuration should avoid the MOD 4 interference.
作者
张建国
黄正彬
周鹏云
Zhang Jianguo;Huang Zhengbin;Zhou Pengyun(Huaxin Consulting Co.,Ltd.,Hangzhou 310014,China;China Mobile GroupGuangxi Co.,Ltd.Yulin Branch,Yulin 537000,China)
出处
《邮电设计技术》
2019年第3期22-26,共5页
Designing Techniques of Posts and Telecommunications
