5G NR随机接入信号的规划研究  

Research on Random Access Signal Planning of 5G NR

作　　者：张建国 韩春娜 杨东来 Zhang Jianguo;Han Chunna;Yang Donglai(Huaxin Consulting Co.,Ltd.,Hangzhou 310052,China;Nokia Shanghai Bell Co.,Ltd.,Hangzhou Granch,Hangzhou 310006,China)

机构地区：[1]华信咨询设计研究院有限公司,浙江杭州310052 [2]诺基亚上海贝尔股份有限公司,浙江杭州310053

出　　处：《邮电设计技术》2019年第8期40-44,共5页Designing Techniques of Posts and Telecommunications

摘　　要：介绍了随机接入前导序列并给出了随机接入信号的规划方法。首先,根据小区的最大覆盖半径、应用场景等因素,选择PRACH前导格式和限制集合类型;然后,根据小区的最大覆盖半径、限制集合类型、PRACH前导格式等因素选择Ncs配置,对于限制集合A和B,建议选择较小的Ncs配置;最后,根据限制集合类型和Ncs配置等因素,计算逻辑根序列索引的范围和每个小区配置的根序列数量,以降低小区内及小区间的随机接入前导发生冲突的概率。It introduces random access preamble sequence and provides the planning method for random access signal.Firstly,PRACH preamble formats and restricted set types are selected according to the maximum cell radius and the application scenarios.Then,Ncs configuration is selected according to the maximum cell radius,restricted set types and PRACH preamble formats.For restricted set A and B,smaller configurations are recommended.Finally,the range of logical root sequence index and the number of root sequences for each cell are calculated according to restricted set types and Ncs configuration to reduce the collision probability of random access preambles for intra-cell and inter-cell.

关 键 词：5G NR PRACH 随机接入前导 循环移位 根序列 

分 类 号：TN929.5[电子电信—通信与信息系统]