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.
|Title of host publication||2020 IEEE 3rd 5G World Forum, 5GWF 2020 - Conference Proceedings|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||5|
|Publication status||Published - 2020 Sept|
|Event||3rd IEEE 5G World Forum, 5GWF 2020 - Virtual, Bangalore, India|
Duration: 2020 Sept 10 → 2020 Sept 12
|Name||2020 IEEE 3rd 5G World Forum, 5GWF 2020 - Conference Proceedings|
|Conference||3rd IEEE 5G World Forum, 5GWF 2020|
|Period||20/9/10 → 20/9/12|
Bibliographical noteFunding 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.
© 2020 IEEE.
All Science Journal Classification (ASJC) codes
- Hardware and Architecture
- Information Systems and Management
- Safety, Risk, Reliability and Quality
- Computer Networks and Communications