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LSA Implementation

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1          Background information on LSA

Licensed Shared Access is national issue and defined in the RSPG Opinion as follows:

“A regulatory approach aiming to facilitate the introduction of radiocommunication systems operated by a limited number of licensees under an individual licensing regime in a frequency band already assigned or expected to be assigned to one or more incumbent users. Under the Licensed Shared Access (LSA) approach, the additional users are authorised to use the spectrum (or part of the spectrum) in accordance with sharing rules included in their rights of use of spectrum, thereby allowing all the authorized users, including incumbents, to provide a certain Quality of Service (QoS)”.

Within ECC, it has been the subject of extensive studies within the Project Teams FM 53 (regulatory conditions for LSA) and FM 52 (implementation of LSA for the shared use of the band 2.3-2.4 GHz).

With the completion of these activities, WG FM decided, at its 83rd meeting in May 2015, to create a new work item on the exchange of information on LSA implementation. The objective is to share experience on LSA implementation and testing (e.g. measurement results) by NRAs.  

Relevant information on LSA implementation and testing provided by CEPT administrations should be sent to ECO (bruno.espinosa@eco.cept.org).

2          Information on LSA testing 

Spain (October 2015)

In 2014-2015, the State Secretariat for Telecommunications and Information Society of the Ministry of Industry, Energy and Tourism of Spain (SETSI) commissioned a study whose aim was to identify spectrum availability for mobile broadband services in Spain in the 2.3 - 2.4GHz band based on LSA on a shared basis with video PMSE.

The last stage of this study was an experimentation carried out at the GSMA Mobile World Congress, Barcelona (March 2015). Its purpose was to demonstrate LSA  options facilitating sharing between Mobile Services (as the LSA Licensee) and PMSE video links (as the Incumbent) both using the 2.3 GHz band. A summary of this test can be found here.

Italy (November 2016)

In 2015, the Italian Ministry for Economic Development has started a pilot project in collaboration with the Joint Research Centre of the European Commission to test the sharing of radio spectrum (https://ec.europa.eu/jrc/en/news/project-testing-radio-spectrum-mobile-broadband). It is conducted under the technical coordination of Fondazione Ugo Bordoni.

The pilot project is intended to be a field test of LSA approach for wireless broadband telecommunications in the 2.3-2.4 GHz band. It is being realised in Rome at the Ministry premises, where a confined mobile LTE TDD network at 2.3-2.4 GHz is deployed and a proper architecture enabling the LSA concept is implemented.

The final results of the LSA Pilot in Rome have been presented in Rome on 23 September 2016. They are  available, together with relevant information, here (English) and here (Italian).

In addition, the Italian regulatory authority AGCOM issued in 2016 a public consultation on LSA. Related information, including the overview of the responses, is available here (in Italian). 

France (October 2016)

A technical report has been published by ANFR in March 2015 to assess the technical conditions of the shared use of the band 2.3-2.4 GHz, through LSA, between broadband wireless systems and the incumbent users of the band. 

An LSA trial took place during the first semester 2016 in Paris managed by industry stakeholders. The analysis of result of this trial, provided by these stakeholders, is detailed here

Finland (March 2016)

Finnish research institutes and industry members in co-operation with the Finnish Regulatory Authority (FICORA) launched the World’s first over-the-air LSA trials between PMSE and Mobile Service on a live commercial LTE network already in 2013. Since then, the trial environment has been constantly improved and seven LSA trials were shown during years 2014-2015 with advanced features such as TD-FDD handover, small cells, support of the incumbent mobility, integrated SON solution and protection zone concept based on total power radiated by the mobile network. These trials were shown to scientific, standardization (ETSI workshop) and regulatory (ECC meeting) audience.

The LSA trial environment consists of several TD-LTE 2.3 GHz macro eNBs and pico indoor eNBs as well as a small cell eNB, all operating on the 2.36-2.4 GHz band.   Additionally, there are 2.1 GHz LTE FDD eNBs to support LSA band evacuation.

Some initial results on evacuation times and more detailed description of the trial environment were given already in CEPT Report 56 Annex 2 and the most up to date information can be found from project website.

The Netherlands (January 2017)

The Netherlands decided in 2015 to start a pilot for an on-line booking system for PMSE in the 2.3-2.4 GHz band. De web-application for the pilot was ready in May 2016 and has been tested extensively. Via the pilot practical experience can be gained and, when successful, the pilot could be extended in future to other services.

The pilot entails that temporary spectrum use for PMSE in the 2.3 – 2.4 GHz must be booked by users via a booking system. This booking system applies at this moment only for PMSE. The use of the booking system has been made obligatory for licensees for PMSE.

The PMSE sector has requested that the lead time for receiving spectrum assignments for temporary use would be shortened and the interference problems would be reduced. This booking system fulfils this request. Possible future development of the system will look at other existing users in the band, namely, government use and radio amateurs.

The pilot lasts for one year and the web-based booking system is operational since 28th of September 2016. During the pilot several meetings with the user group are scheduled. The first has already taken place on 12th of January 2017. In this meeting, users mainly commented on the functionality and user-friendliness of the system. Where possible these comments will be taken into account by improving the functionality of the booking system, for which some new software releases are scheduled during the pilot in order to obtain a stable system. The final evaluation meeting is scheduled for 5th of October 2017 and will be followed by an evaluation report.

Furthermore, a separate project will be started in spring 2017 to prepare already for the follow-up of the current pilot. For this purpose a roadmap will be drawn up to describe the future possibilities of LSA in the Netherlands. This roadmap will look beyond the 2.3 - 2.4 GHz band and its users and will also consider other means of sharing the spectrum than via manual booking in a web-application.


3          Information on LSA national implementation

None currently available


4          Relevant ECC deliverables and documentation

5          Related technical specifications

Within ETSI, TC RRS (Reconfigurable Radio Systems) is developing technical specifications for the implementation of LSA. In November 2016, TC RRS approved TS 103 379 “Information elements and protocols for the interface between LSA Controller (LC) and LSA Repository (LR) for operation of Licensed Shared Access (LSA) in the 2300 MHz-2400 MHz band”, version 1.1.1. This stage-3 document completes the first release of LSA technical specification in ETSI.

 

 

Updated: 24 May 2017, 13:38