5G Radio Access Requirements, Concept and Technologies

During the last few decades, mobile communications have significantly contributed to the economic and social developments of both developed and developing countries. Today, module communications from an indispensable part of the daily lives of millions of people all over the world; a situation which is expected to become even more undeniable in the future. Currently, many operators worldwide are deploying LTE to offer faster access with lower latency and higher efficiency than 3G. LTE-Advanced which is now rolling out is an evolution of LTE. Amid such a situation, the anticipated challenges of the future are so tremendous that there is a vastly increased need for new mobile communication systems with further enhanced capabilities - This is being called 5G i.e fifth generation. NTT Docomo started studies on future radio access in 2010. The aim was to identify future needs and requirements of 2020 and beyond and identify the right system concept and radio access technologies to address them. The goal is to provide an initial 5G deployment in time for the Tokyo 2020 Olympic Games. This document provides DOCOMO's views on the drivers and requirements, the evolution concept, and potential candidate solutions for realizing DCOCMO's 5G radio access beyond 2020.