5G NR FR2 Femtocell Coverage Map Using an Omnidirectional Twisted SWAA

Hugo Rodrigues Dias Filgueiras,Tiago Henrique Brandao,Arismar Cerqueira S,Eduardo Saia Lima

doi:10.1109/ojap.2020.3044460

Hugo Rodrigues Dias Filgueiras, Tiago Henrique Brandao + Show 2 more

Open Access

https://doi.org/10.1109/ojap.2020.3044460

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Abstract

This article reports the implementation and coverage map of a mm-waves femtocell, using a high-gain omnidirectional twisted slotted-waveguide antenna array (SWAA). The twisted SWAA provides 14.7 dBi gain and 1.1-GHz bandwidth in the frequency range 2 (FR2) from the 5G new radio (5G NR) standard. A 91-m2 indoor coverage is demonstrated and its coverage map is estimated by measurements of the root mean square error vector magnitude (EVMRMS) parameter at 36-spatially distributed reception points throughout the laboratory. The 5G NR femtocell operates with 50-MHz bandwidth and 30 kHz-spaced subcarriers, giving rise to 104.8 Mbit/s throughput, whose signal quality is analyzed accordingly to the 3GPP Release 15 recommendations. Line-of-sight (LOS) and NLOS (non-LOS) propagation scenarios are evaluated, implying in EVMRMS variation from 3.13% to 19.4%. Coverage of 94% and 89% are achieved for QPSK (Quadrature Phase Shift Keying) and 16-QAM (Quadrature Amplitude Modulation) systems, respectively, demonstrating its applicability to the deployment of 5G NR femtocell operating in mm-waves.

Highlights

M OBILE communication systems have been evolving as the number of connected users increases and new applications are launched on the market [1]
5G new radio (5G NR) is a radio access network (RAN) standard that was initially released to the market
The current manuscript reports the implementation and coverage map estimation of an indoor femtocell based on the new 5G NR standard [4] operating in frequency range 2 (FR2)

Summary

INTRODUCTION

M OBILE communication systems have been evolving as the number of connected users increases and new applications are launched on the market [1] Such reality, demands an evolution from the fourth generation (4G) to the fifth-generation (5G) of mobile communications, which relies on supplying more throughput to the users, and enhanced connectivity, reliability, low-latency and management of a massive number of devices [2]. In a mm-waves indoor scenario, small cells and femtocells are in handed for enabling extremely high throughput in the order of Gbit/s Such an application could be implemented by using a unique antenna with high gain and an omnidirectional radiation pattern. The current manuscript reports the implementation and coverage map estimation of an indoor femtocell based on the new 5G NR standard [4] operating in FR2.

TWISTED OMNIDIRECTIONAL SWAA SWA

Findings

CONCLUSION