5G随机接入增强技术  

5G Random Access Technology Enhancements

作　　者：沈霞 刘慧 SHEN Xia;LIU Hui(China Academy of Information and Communications Technology,Beijing 100191,China)

机构地区：[1]中国信息通信研究院,北京100191

出　　处：《移动通信》2020年第4期7-11,共5页Mobile Communications

摘　　要：结合最新5G标准研究进展,对5G随机接入技术相比4G的增强方案展开研究分析,包括R16结合配置授权的上行资源分配方式实现了两步随机接入技术,R17针对非地面通信场景下的同步增强以及支持非激活状态下的上行小数据传输。通过研究表明,随机接入基础方案已完成,后续将向满足特定场景需求以及提升随机接入性能方面增强。Based on the latest development of 5 G standardization,this paper provides research on the enhancement solution of 5 G random access technology compared to 4 G,including two-step RACH with the uplink confi gured grant resource allocation type in R16,synchronization enhancements for NTN communication scenarios in R17,and uplink small data transmission in the inactive state.The research shows that fundamental solutions for random access have been completed and further enhancements will focus on meeting the requirements of specifi c use cases and improving the performance of random access.

关 键 词：5G 随机接入 同步 非地面通信 小数据 

分 类 号：TN929.5[电子电信—通信与信息系统]