A Friendly Introduction to the Requirements and Supporting Technologies for 5G Cellular Networks

Iván Bernal

Resumen


Resumen: Este artículo pretende dar una visión fácil de entender sobre los requisitos y las tecnologías que se prevébrindarán soporte a los sistemas celulares de 5G. Se presentan algunas estadísticas de importancia relacionadas a laforma en la que el tráfico se comportó durante el año 2015 y el pronóstico hasta el año 2020. Esto permite unamejor comprensión de los requisitos para sistemas 5G que se están delineando actualmente y las aplicaciones que sepodrán especificar. Dada la orientación de este trabajo, se han considerado dos aspectos generales: a) Cómoaumentar y alcanzar la capacidad de los sistemas 5G combinando más espectro, más celdas y mejorando laeficiencia espectral disminuyendo la interferencia; y, b) Los aspectos principales de la arquitectura de los sistemas5G, incluyendo discusiones sobre la red de acceso, backhaul y el core de la red. Para cada caso, se presentan ydiscuten algunas tecnologías que están siendo mejoradas y optimizadas y otras que están siendo investigadas y queaún están en sus etapas iniciales.Abstract: This article pretends to provide an easy-to-understand overview of the requirements and the technologiesenvisioned to support 5G cellular systems. Some meaningful statistics regarding the way traffic behaved during theyear 2015 and a forecast up to year 2020 are presented. This allows a better understanding of the requirements for5G that are currently being outlined and the applications that will be enabled. Given the orientation of this paper,two general aspects have been considered: a) How to increase and reach the required capacity of 5G systems bycombining more spectrum, more cells and enhancing spectral efficiency by dealing with interference; and, b) Themain aspects of the overall architecture of 5G systems, including discussions of the access network, backhaul andcore. For each case several technologies that are under enhancements and optimization and others that are just beingresearched and still are in their initial steps are introduced and discussed.

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