ULTRA-RELIABLE AND LOW-LATENCY COMMUNICATIONS IN 5G DOWNLINK: PHYSICAL LAYER ASPECTS

被引：338
|
作者：
Ji, Hyoungju [1 ]
Park, Sunho [2 ]
Yeo, Jeongho [3 ]
Kim, Younsun [3 ]
Lee, Juho [3 ]
Shim, Byonghyo [1 ]
机构：
[1] Seoul Natl Univ, Sch Elect & Comp Engn, Seoul, South Korea
[2] Seoul Natl Univ, Inst New Media & Commun, Seoul, South Korea
[3] Samsung Elect, Suwon, South Korea
来源：
IEEE WIRELESS COMMUNICATIONS | 2018年 / 25卷 / 03期
基金：
新加坡国家研究基金会;
关键词：
D O I：
10.1109/MWC.2018.1700294
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
URLLC is a new service category in 5G to accommodate emerging services and applications having stringent latency and reliability requirements. In order to support URLLC, there should be both evolutionary and revolutionary changes in the air interface named 5G NR. In this article, we provide an up-to-date overview of URLLC with an emphasis on the physical layer challenges and solutions in 5G NR downlink. We highlight key requirements of URLLC and then elaborate the physical layer issues and enabling technologies including packet and frame structure, scheduling schemes, and reliability improvement techniques, which have been discussed in the 3GPP Release 15 standardization.
引用
收藏
页码：124 / 130
页数：7
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