TY - JOUR
T1 - Ultra-Reliable and Low-Latency Communications in 5G Downlink
T2 - Physical Layer Aspects
AU - Ji, Hyoungju
AU - Park, Sunho
AU - Yeo, Jeongho
AU - Kim, Younsun
AU - Lee, Juho
AU - Shim, Byonghyo
N1 - Funding Information:
AcknowLedgMent This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) (2014R1A5A1011478) and a Cross-Ministry Giga KOREA Project grant funded by the Korea government (MSIT) (No. GK17P0501, Development of Ultra Low-Latency Radio Access Technologies for 5G URLLC Service).
Publisher Copyright:
© 2002-2012 IEEE.
PY - 2018/6
Y1 - 2018/6
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85049637110&partnerID=8YFLogxK
U2 - 10.1109/MWC.2018.1700294
DO - 10.1109/MWC.2018.1700294
M3 - Article
AN - SCOPUS:85049637110
SN - 1536-1284
VL - 25
SP - 124
EP - 130
JO - IEEE Wireless Communications
JF - IEEE Wireless Communications
IS - 3
ER -