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Finnish Licensed Shared Access (LSA) trials

COST TERRA meeting, Vilnius, 29.4.2014

Marja Matinmikko on behalf of Finnish Trial project consortia CORE+ and WISE2

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Outline

� Introduction

� LSA concept

� Finnish LSA field trial

� Performance evaluation

� Conclusions

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Introduction

� Mobile traffic is growing at rapid pace leading to increasingspectrum demand.

� New spectrum sharing concepts are being developed for MNOsto access new spectrum bands on a shared basis due to lack of unallocated bands and costly and time-consuming refarmingprocess.

�Europe: new Licensed Shared Access (LSA) concept is under

heavy study.

� Trials are needed to showcase the functioning of the new spectrum sharing concepts with practical systems in realisticsituations.

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Licensed Shared Access (LSA) concept

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LSA Concept

� LSA concept aims at allowing new licensed users on spectrum bands that already encompass incumbent spectrum users with spectrum sharing that provides a certain quality of service (QoS) for both the entrants and the incumbents.

� The LSA concept could offer a cost-efficient solution for MNOsto access IMT bands currently used by other type of incumbentsa shared basis while protecting the rights of incumbents and offering operational certainty also for the MNO.

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LSA concept

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Previous work on LSA

• EC has given the definition for the LSA concept in Nov. 2013.

• CEPT has developed the LSA framework and a draft decision for the use of LSA for mobile in the 2.3-2.4 GHz band in 2014.

Regulation:

• ETSI has developed a system reference document for LSA in the 2.3-2.4 GHz band in July 2013.

• ETSI currently derives system requirements and develops systemarchitecture.

Standardization:

• Research on the concept has started to appear in scientific forums.

• First public live trial of sharing using TD-LTE in the 2.3-2.4 GHzband was shown in Finland in 2013.

Research:

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Finnish LSA field trial

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Finnish Trial Program (2011-2014)

� Trial Environment for Cognitive Radio and Networks programme

(2011-2014) of Tekes – the Finnish Funding Agency for Innovation -

offers international partners the opportunity to cooperate with the key

players in Finland:

� 51 projects, 10 companies and 7 research institutes with a total volume

of 35 M€.

� Trial programme has developed trial environments and related

cognitive technology and showcased new spectrum sharing

concepts, such as the LSA, in close collaboration between industry

and research projects and regulation.

� Finnish Communications Regulatory Authority (FICORA) rewarded

Trial program for promoting electronic communications in 2013.

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Finnish LSA trial group: CORE+ and WISE2 project consortia

Three public LSA trials: WWRF in Oulu 04/2013, LSA Trial Workshop

in Helsinki 09/2013 and IEEE DySPAN in US 04/2014

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Finnish LSA trial using live LTE network

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Performance evaluation - setup

� Evacuation time from the incumbent’s evacuation request to the time the LTE base station is offline was measured

� Starts when the LSA repository delivers an evacuation request to

the LSA controller.

� LSA controller sends evacuation commands:

� to network management system to switch off the base station, and

� to the end users for forced handovers.

� Ends when no base station signal is observed over the air

anymore.

� QoS of end users was also measured.

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Performance evaluation - results

� Evacuation time was on the avarage 26 s.

� Total handover execuation took on the avarage 20 s.

� User connection break during evacuation was on the avarageonly 100 ms.

� Results indicate that:

� LSA band can be evacuated in a timely manner

� Evacuation process is almost invisible for end users who continue

to be served with other network resources

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Other LSA activity

� Technical

� Live trials and their performance measurements

� Cellular architecture evolution for LSA

� LSA architecture consideration from incumbent perspective

� Business

� LSA work flow and tasks of key stakeholders

� Business models for MNOs

� Business scenarios for incumbent spectrum users

� Business benefits for key stakeholders

� Regulation

� Contributions to preparation of ECC Report 205

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Conclusions

� LSA concept allows MNOs to access new shared bands with guaranteed QoS while protecting the rights of incumbents.

� Finnish consortium has presented live field trials of the LSA concept where a TD-LTE network shares the spectrum in 2.3-2.4 GHz band with cordless camerass (PMSE service).

� Dynamic availability of the LSA band can be handled with existing network equipment and a minimum number of additionalcomponents, LSA Repository and LSA Controller.

� Finnish research activity has looked at the LSA concept fromtechnical, business and regulatory sides. Future work willcontinue to cover more realistic settings.

� See you (and our latest LSA trial) at CrownCom 2014 in Oulu!

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References

� RSPG Opinion on Licensed Shared Access, RSPG13-538, European

Commission, Radio Spectrum Policy Group, November 2013.

� ETSI. Mobile broadband services in the 2 300 MHz – 2 400 MHz

frequency band under Licensed Shared Access regime. ETSI ERM

System reference document. TR 103 113, V. 1.1.1. July 2013.

� ECC Report 205. Licensed Shared Access. 2014.

� Draft ECC Decision. Harmonised technical and regulatory conditions

for the use of the band 2300 - 2400 MHz for MFCN. 2014

� M. Matinmikko, M. Palola, H. Saarnisaari, M. Heikkila, J. Prokkola, T.

Kippola, T. Hänninen, M. Jokinen, S. Yrjölä, “Cognitive Radio Trial

Environment: First Live Authorized Shared Access-Based Spectrum-

Sharing Demonstration, ” IEEE Vehicular Technology Magazine, vol. 8,

no. 3, Sept. 2013, pp. 30-37.

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TECHNOLOGY FOR BUSINESS

Contact: Marja.Matinmikko@vtt.fi