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A Massive Millimeter-Wave Spectrum Allocation and Exploitation Technique Toward 6G Mobile Networks

Authors:
Rony Kumer Saha

Keywords: 6G; 28 GHz; countrywide; millimeter-wave; mobile network; spectrum allocation; spectrum exploitation; technique.

Abstract:
In this paper, we propose a Countrywide Millimeter-Wave (mmWave) Spectrum Allocation and Reuse (CoMSAR) technique to allocate and reuse spatially the countrywide massive 28 GHz mmWave spectrum to each Mobile Network Operator (MNO) to operate its small cells per floor in a multistory building. A frequency-domain interference management scheme is developed, and the optimal amount of spectrum for each MNO is deduced to avoid Co-Channel Interference (CCI) at the presence of User Equipments (UEs) of multiple MNOs on each floor. We derive average capacity, Spectral Efficiency (SE), Energy Efficiency (EE), and Cost Efficiency (CE) for CoMSAR. Extensive numerical and simulation results and analyses are carried out for an example scenario of a country consisting of four MNOs, i.e., MNO 1, MNO 2, MNO 3, and MNO 4 with a subscriber base of, respectively, 40%, 30%, 20%, and 10% of the total countrywide subscribers. It is shown for MNO 1 that the proposed technique can improve average capacity, SE, EE, and CE by 300%, 165%, 75%, and 60%, respectively, with no CCI, whereas 60%, 6%, 37%, and 0.4%, respectively, with the maximum CCI. Further, we show that CoMSAR can satisfy the SE and EE requirements for sixth-generation (6G) mobile systems by reusing the countrywide 28 GHz mmWave spectrum to small cells of MNO 1 of about 60% less number of floors with no CCI, whereas 3.3% less number of floors with the maximum CCI, in a building.

Pages: 32 to 41

Copyright: Copyright (c) IARIA, 2020

Publication date: October 18, 2020

Published in: conference

ISSN: 2163-9027

ISBN: 978-1-61208-828-0

Location: Portugal, Porto

Dates: from October 18, 2020 to October 22, 2020