Models, Methods, and Solutions for Multicasting in 5G/6G mmWave and sub-THz Systems

Nadezhda Chukhno, Olga Chukhno, Dmitri Moltchanov, Sara Pizzi, Anna Gaydamaka, Andrey Samuylov, Antonella Molinaro, Yevgeni Koucheryavy, Antonio Iera, Giuseppe Araniti

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)
11 Downloads (Pure)


Multicasting in wireless access networks is a functionality that, by leveraging group communications, turns out to be essential for reducing the amount of resources needed to serve users requesting the same content. The support of this functionality in the modern 5G New Radio (NR) and future sub-Terahertz (sub-THz) 6G systems faces critical challenges related to the utilization of massive antenna arrays forming directional radiation patterns, multi-beam functionality, and use of multiple Radio Access Technologies (RATs) having distinctively different coverage and technological specifics. As a result, optimal multicasting in these systems requires novel solutions. This article aims to provide an exhaustive treatment of performance optimization methods for 5G/6G mmWave/sub-THz systems and discuss the associated challenges and opportunities. We start by surveying 3rd Generation Partnership Project (3GPP) mechanisms to support multicasting at the NR radio interface and approaches to modeling the 5G/6G radio segment. Then, we illustrate optimal multicast solutions for different 5G NR deployments and antenna patterns, including single-and multi-beam antenna arrays and single-and multiple RAT deployments. Further, we survey new advanced functionalities for improving multicasting performance in 5G/6G systems, encompassing Reflective Intelligent Surfaces (RISs), NR-sidelink technology, and mobile edge enhancements, among many others. Finally, we outline perspectives of multicasting in future 6G networks.

Original languageEnglish
JournalIEEE Communications Surveys and Tutorials
Publication statusE-pub ahead of print - 26 Sept 2023
Publication typeA1 Journal article-refereed


  • 5G
  • 6G
  • 6G mobile communication
  • Antenna arrays
  • Mathematical models
  • millimeter Wave
  • Millimeter wave communication
  • multi-beam antennas
  • multi-RAT
  • Multicast communication
  • multicasting
  • New Radio
  • optimization
  • Optimization
  • Surveys
  • terahertz

Publication forum classification

  • Publication forum level 2

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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