Ultra-Reliable and Low-Latency Communications in 5G Downlink: Physical Layer Aspects

Hyoungju Ji; Sunho Park; Jeongho Yeo; Younsun Kim; Juho Lee; Byonghyo Shim

doi:10.1109/MWC.2018.1700294

Ultra-Reliable and Low-Latency Communications in 5G Downlink: Physical Layer Aspects

Hyoungju Ji, Sunho Park, Jeongho Yeo, Younsun Kim, Juho Lee, Byonghyo Shim

Research output: Contribution to journal › Article › peer-review

467 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	124-130
Number of pages	7
Journal	IEEE Wireless Communications
Volume	25
Issue number	3
DOIs	https://doi.org/10.1109/MWC.2018.1700294
Publication status	Published - 2018 Jun

Bibliographical note

Publisher Copyright:
© 2002-2012 IEEE.

ASJC Scopus subject areas

Computer Science Applications
Electrical and Electronic Engineering

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10.1109/MWC.2018.1700294

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AU - Kim, Younsun

AU - Lee, Juho

AU - Shim, Byonghyo

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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.

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Ultra-Reliable and Low-Latency Communications in 5G Downlink: Physical Layer Aspects

Abstract

Bibliographical note

ASJC Scopus subject areas

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