Advancements in 5G New Radio TDD Cross Link Interference Mitigation

This article presents enhancements that further improve the performance of 5G New Radio time division duplex (TDD) operation and performance. The focus is on mechanisms to mitigate co-channel cross link interference (CLI) between neighboring cells, providing pointers also to recent advances in remot...

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Bibliographic Details
Published inIEEE wireless communications Vol. 28; no. 4; pp. 106 - 112
Main Authors Pedersen, Klaus, Esswie, Ali, Lei, Du, Harrebek, Johannes, Yuk, Youngsoo, Selvaganapathy, Srinivasan, Helmers, Hakon
Format Journal Article
LanguageEnglish
Published New York IEEE 01.08.2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
3GPP
Algorithms
Broadband
Configurations
Frequency measurement
Interference
Machine learning
Mobile computing
Network latency
OFDM
Performance enhancement
Power measurement
Radio
Time division
Time measurement
Ultra reliable low latency communication
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Summary:This article presents enhancements that further improve the performance of 5G New Radio time division duplex (TDD) operation and performance. The focus is on mechanisms to mitigate co-channel cross link interference (CLI) between neighboring cells, providing pointers also to recent advances in remote interference mitigation between cells separated by tens to hundreds of kilometers. A sophisticated framework where User Equipment's (UEs) are used as sensors detecting CLI problems is outlined, and the underlying design rationales are presented. Solutions for simple coordination of TDD radio frame configurations between network elements are described. Solutions based on simple reinforcement learning algorithms for the network to adjust the TDD radio frame configuration are proposed, and validated for both macro and indoor factory deployments, considering both ultra-reliable low latency communication (URLLC) and enhanced mobile broadband (eMBB) traffic. Results from extensive dynamic system-level simulations confirm that such solutions offer attractive benefits.
ISSN:1536-1284
1558-0687
DOI:10.1109/MWC.001.2000376