loading page

Multi-Rate Multicasting Aided NOMA for Addressing the Multiuser Diversity in 5G Networks
  • +3
  • Ernesto Fontes Pupo ,
  • Claudia Carballo Gonzalez ,
  • Eneko Iradier ,
  • Jon Montalban ,
  • Pablo Angueira ,
  • Maurizio Murroni
Ernesto Fontes Pupo
University of Cagliari

Corresponding Author:[email protected]

Author Profile
Claudia Carballo Gonzalez
Author Profile
Eneko Iradier
Author Profile
Jon Montalban
Author Profile
Pablo Angueira
Author Profile
Maurizio Murroni
Author Profile

Abstract

The envisaged fifth-generation (5G) and beyond networks offer unprecedented breakthroughs in media service delivery, stringent requirements, and challenging use cases. In such context, point-to-multipoint (PTM) communications have proved their high efficiency in delivering high-quality multimedia services over wireless networks. For the upcoming 5G system Releases and beyond, the Multicast/Broadcast Services (MBS) capability is an appealing feature to address the ever-growing traffic demands, disruptive multimedia services, massive connectivity, and low-latency applications. This paper addresses the multicast group (MG) channel quality diversity through dynamic single-rate and multi-rate multicasting aided orthogonal multiple access (OMA) and non-orthogonal multiple access (NOMA) over 5G MBS use cases. We characterize and identify conditions and variables interrelation for an effective coexistence of the benchmark conventional multicast scheme (CMS) and subgrouping based on OMA (S-OMA) and subgrouping based on NOMA (S-NOMA). We propose tailored multicast radio resource management (RRM) strategies aided by K-Means subgrouping and particle swarm optimization (PSO). Moreover, we define the interrelation among the variables that shape the performance of the proposed solution and their dynamic behavior in terms of the users’ reception conditions, multimedia service constraints, and network parameters. The presented results are validated under a wide range of users’ channel quality distributions, and network conditions recreated through link-level simulations of a 5G MBS use case operating in millimeter-wave (mmWave).