How Many Transmission Reception Points to Deploy in a User-Centric Distributed Massive MIMO Network?

Juan Fabricio Monteiro Oliveira, André Fernandes, Daynara Dias Souza, Yasmim K. C. Costa, Andre Mendes Cavalcante, Joao Weyl Costa

DOI: 10.14209/sbrt.2025.1571145681

Evento: XLIII Simpósio Brasileiro de Telecomunicações e Processamento de Sinais (SBrT2025)

Keywords: Cell-free massive MIMO User-centric networks TRP dimensioning 6G mobile networks

Abstract

User-centric distributed massive multiple-input multiple-output (D-mMIMO), or cell-free massive MIMO, is a novel wireless technology that improves spectral efficiency and provides uniform coverage in sixth-generation mobile networks (6G). However, properly dimensioning the amount of transmission and reception points (TRPs) for effective network operation is still a challenge. Unlike traditional cellular systems, the user's equipment can connect to multiple TRPs, leading to dynamic connections. This paper presents a methodology to estimate the minimum number of TRPs required in UC D-mMIMO systems, considering realistic user distribution and TRPs' unique coverage constraints. Results are presented for downtown and residential urban scenarios.

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