The CORE+ trial environment shows world’s first live LSA/ASA trial using TD-LTE base stations in the 2.3 GHz band. Presentation about CORE+ Cognitive Radio Trial Environment in WWRF meeting 30, Oulu, Finland, 23rd of April 2013

1. CORE+ Cognitive Radio Trial Environment +
WWRF meeting 30, Oulu, Finland, 23rd of April 2013
Marja Matinmikko, Marko Palola, Harri Saarnisaari, Marjo Heikkilä, Jarmo Prokkola, Hannu Tuomivaara, Tero Kippola, Markku Jokinen & Tuomo Hänninen VTT Technical Research Centre of Finland, University of Oulu & Centria

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Outline
Introduction
CORE+ project overview
CORE+ trial environment and results
Future steps: Authorised Shared Access (ASA)
Summary and conclusions

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Introduction
Mobile telecommunication traffic keeps growing significantly in the future.
While the increasing data traffic will be carried by more powerful wireless technology, e.g. LTE, the roll out of the new mobile networks will require new spectrum bands with wider carrier bandwidths to realize the full benefits of the technology.
Cognitive radio system (CRS) technology with capabilities for obtaining knowledge, decision making & adjustment, and learning can help to:
Optimise resource use within the network and across multiple networks
Facilitate spectrum sharing between different radiocommunication services

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CORE+ PROJECT

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Overview of CORE+ project
CORE+ (Cognitive Radio Trial Environment +) project in 2013-2014 is continuation of CORE project in 2011-2012 and belongs to Finnish Trial program funded by Tekes including:
Three research organisations: VTT Technical Research Centre of Finland, Centria and University of Oulu;
Seven industry companies: Nokia Siemens Networks, PPO, EXFO, Elektrobit, Renesas Mobile Europe, PehuTec, and Rugged Tooling; and
Two governmental organisations: the Finnish Defence Forces and Finnish Communications Regulatory Authority (FICORA).

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CORE+ goals
Develop cognitive radio trial environments and trial new spectrum sharing concepts based on cognitive radio system (CRS) technology with a particular focus on Authorised Shared Access (ASA) and Active Antenna System (AAS) concepts and also device to device (D2D) and full duplex radio concepts (FDR)
Develop cognitive engines for the above concepts to improve the resource use of future mobile systems.
Research the impact of spectrum sharing with CRS on the business ecosystem and business models in the mobile broadband business.
Influence the international spectrum regulation to include spectrum sharing with CRS technology and follow the relevant CRS related standardization activities.

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CORE+ TRIAL ENVIRONMENT

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CORE+ trial environment
Centria:
Live field trial LTE network in Ylivieska.
VTT:
Cognitive engine in Oulu.
University of Oulu:
WARP system in Oulu.

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Performance evaluation
Loadbalancing from LTE network to Wi-Fi with three video users (1 priority + 2 normal) based on measured QoS of the users.
Standard system: CORE system: Priority userNormal user 1Normal user 2No. of video clients: no prio.prio. + prio. + prio. + prio. + prio. + prio. + Delay [ms]videoonlynorm.2 norm.norm.2 norm.norm.2 norm. Average17.2942.7841.84109.7336.4293.62N/AN/ASt.Dev.6.1210.8955.619.2320.90N/AN/AJitter [ms] Average2.121.141.211.341.021.12N/AN/ASt.Dev.0.050.080.480.120.13N/AN/APacket loss [%] Average0.00 %1.25 %0.04 %16.15 %0.10 %9.13 %2.85 %14.57 % St.Dev.1.39 %0.08 %4.93 %0.13 %4.70 %2.43 %4.15 % % of time, PL > 1% Average0.00 %2.87 %1.99 %16.08 %0.77 %10.93 %4.56 %14.40 % St.Dev.1.43 %3.43 %3.02 %1.04 %5.25 %3.37 %2.74 %

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FUTURE STEPS

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Authorised Shared Access (ASA)
ASA concept aims at allowing dynamic use of spectrum whenever and wherever it is unused by the incumbent spectrum user.
A key benefit of ASA is to ensure controlled predictable QoS levels for both incumbent spectrum users and the ASA licensees by considering a limited number of entities.
ASA is complementary to traditional exclusive licensing and license- exempt approaches allowing sharing with pre-determined rules and conditions and licensing agreements.
ASA can provide a cost-efficient and harmonized way to utilize existing mobile spectrum allocations and to achieve economies of scale by making these bands available worldwide with existing user equipment and minimum modifications to the infrastructure.
The first application area for the ASA concept currently under study in regulation and standardization in Europe is the 2.3-2.4 GHz band.

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ASA framework

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The developed CORE+ trial environment will be used to show world’s first live ASA trial using TD-LTE base stations in the 2.3 GHz band at WWRF meeting on Thursday 25th of April.

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Summary and conclusions
CORE+ (Cognitive Radio Trial Environment+) project has developed trial environment to trial cognitive technology and quantify its benefits.
The developed trial environment implements the cognitive cycle and allows researchers to carry out experiments with cognitive decision making.
First results of CORE cognitive systems show very promising results: end users’ QoS is improved by loadbalancing decisions.
World’t first live ASA trial using the CORE+ trial environment will be shown on 25th of April.