DMRS-Applied Repetition Transmission (DART): Grant-Free Scheme for mMTC

Seokjae Moon, Jang Won Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)


In this paper, we develop a repetition-based grant-free scheme, called DMRS-Applied Repetition Transmission (DART), to support mMTC user equipments (UEs). In DART, the demodulation reference signals (DMRSs) are exploited to estimate the channels as well as to implicitly inform the repetition patterns to the gNB. Based on the detected DMRSs, the gNB performs successive interference cancellation (SIC) to further decode the data of mMTC UEs that transmit their data on the same resource block. DART achieves high success rate, low latency, and low SIC overhead by adopting DMRS-based SIC ordering. Simulation results show that DART is able to support mMTC UEs effectively.

Original languageEnglish
Title of host publication2020 IEEE 3rd 5G World Forum, 5GWF 2020 - Conference Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages5
ISBN (Electronic)9781728172996
Publication statusPublished - 2020 Sept
Event3rd IEEE 5G World Forum, 5GWF 2020 - Virtual, Bangalore, India
Duration: 2020 Sept 102020 Sept 12

Publication series

Name2020 IEEE 3rd 5G World Forum, 5GWF 2020 - Conference Proceedings


Conference3rd IEEE 5G World Forum, 5GWF 2020
CityVirtual, Bangalore

Bibliographical note

Funding Information:
This work was supported in part by the Institute for Information and Communications Technology Promotion through the Korea Government (MSIT) (Development on the Core Technologies of Transmission, Modulation, and Coding with Low-Power and Low-Complexity for Massive Connectivity in the IoT Environment), South Korea, under Grant 2016-0-00181, and in part by the Midcareer Researcher Program through the NRF grant funded by MSIT under Grant NRF-2019R1A2C2084870.

Publisher Copyright:
© 2020 IEEE.

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Information Systems and Management
  • Safety, Risk, Reliability and Quality
  • Computer Networks and Communications


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