Licensed Shared Access evolution enables early access to 5G spectrum and novel use cases

S Yrjölä,H Kokkinen

doi:10.4108/eai.12-12-2017.153463

Abstract

This paper discusses the regulatory and standardization status of the Licensed Shared Access (LSA), compares it with the US Citizens Broadband Radio Service concept, and reviews results from the ongoing feasibility study in the European Telecommunications Standards Institute on temporary spectrum ac

Highlights

The rapid growth in the number of mobile and wireless communication systems’ users with a large range of diverse services, applications and devices [1] will require significantly more spectrum and wider continuous bandwidth than currently available [2] despite advances in spectral efficiency and network densification
High level requirements for this Licensed Shared Access (LSA) evolution concept study and validation were derived from the ongoing feasibility study in the ETSI RRS technical committee on temporary spectrum access for local high-quality wireless networks [13], and the research on Micro-operator concept [17] and [40]
Introduced LSAevo concept and system architecture can be applied to 3.4-3.8 GHz band so that fragmentation challenges to take the band into 5th Generation (5G) use in the member states can be solved, while ensuring that the communication of the incumbent users, fixed wireless access, fixed links, and satellite earth stations do not experience harmful interference

Summary

Introduction

The rapid growth in the number of mobile and wireless communication systems’ users with a large range of diverse services, applications and devices [1] will require significantly more spectrum and wider continuous bandwidth than currently available [2] despite advances in spectral efficiency and network densification. The European Telecommunications Standards Institute Reconfigurable Radio Systems Technical Committee (ETSI RRS) initiated a feasibility study “Temporary spectrum access for local highquality wireless networks” [13] in 2017 to study LSA evolution towards 5G spectrum, localization of spectrum for novel 5G use cases, and to enable horizontal sharing and sub-licensing for efficient use of the spectrum assets. For these prominent spectrum sharing concepts currently under final stages of standardization and field validation, there is not much prior work available in the field of comparative architecture analysis and common evolutionary scenarios.

Comparative analysis of the spectrum sharing frameworks

Comparative analysis of LSA and CBRS

High level requirements

LSAevo concept and functional architecture

LSAevo validation

Conclusions