Geolocation databases for spectrum sharing : ECC findings and studies

EC DG CONNECT Workshop, 20 March 2015

Bruno Espinosa, Deputy Director, ECO

Content

• Spectrum sharing

• TV White spaces and geolocation database

• Licensed Shared Access (LSA) – Case of the 2.3 – 2.4 GHz band

• Other possible sharing scenarios considering geolocation database

Spectrum sharing

• Spectrum: scarce resource but more and more users.• Full harmonisation and exclusive use more and more difficult to

achieve• Current usage and spectrum demand may vary from country to

country

Need to find technical and regulatory ways to share common spectrum, both for individual authorisations and general

authorisations, in a flexible way

WSD (White Space Devices) - background

White space is a part of the spectrum, which is available for a radiocommunication application at a given time in a given geographical area on a non-interfering / non-protected basis with regard to primary services and other services with a higher priority on a national basis

Technical conditions for WSD defined to provide protection to primary services

TV WSD – Technical conditions

• ECC Report 159 (2011) complemented by ECC Report 185 (2013): define technical and operational requirements for the possible operation of WSD in the band 470-790 MHz

• Focusses mainly on protection of broadcasting (DTT) and PMSE

• Identify three potential techniques:• Sensing: conduct a measurement within a channel, to determine whether any

protected service is present• Geo-location database: WSD to define their location and consult a geolocation

database to determine available frequencies (and associated condition) at their location

• Beacons: signals to indicate that particular channels are either in use by protected services or vacant

• First assessment geolocation most promising approach. Requires further consideration.

TV WSD – Geolocation database – ECC Report 186

• ECC Report 186 “Technical and operational requirements for the operation of white space devices under geo-location approach”

• Guidance to administrations on algorithms to translate the protection requirements of primary use.

Geo-location DB

Protection requirements

translated into constraints

for WSD operation

Info on Broadcasting

Info on PMSE

Info on RAS

Info on mobile services

Info on ARNS

Information from WSD

Information to WSD

TV WSD – Geolocation database – ECC Report 186

• Guidance to administrations and ETSI (ETSI EN 301 598) on • data elements that would need to be exchanged between a

WSD and a geo-location database • basic operational requirements.

• Introduces the distinction between master WSD and associated slave(s)

• Initial considerations on issues related to database management

• Some general aspects may be applicable to geolocation database use in other scenarios and other bands

TV WSD – Geolocation database- regulatory framework

Draft ECC Report 236 (public consultation): • Describes the overall regulatory framework for TV WSD using

geo-location databases and guidance for national implementation

• Identifies and discusses options for database policy and provision (role of NRA)

Licensed Shared Access (LSA) - Background

“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 authorised users, including incumbents, to provide a certain Quality of Service (QoS)”

• ECC published ECC Report 205 on LSA (Feb 2014)• The implementation of LSA relies on the concept of a “sharing framework” that

is under the responsibility of Administration/NRA. Its development requires the involvement of all relevant stakeholders.

• Details of sharing framework decided at national level, depending upon incumbent use.

• Sharing can be done in the three dimensions: time, frequency and area.

• LSA repository: deliver the information on spectrum availability and associated conditions

• LSA controller: manages the access to the spectrum made available to the LSA licensee

• Possible architectures defined by ETSI TC RRS

LSA – Technical measures

LSA (Case of the 2.3-2.4 GHz band)

• ECC Decision(14)02: harmonised conditions for the use of the band for MFCN.• General guidelines for the implementation of LSA for sharing with

incumbent users

• CEPT response to EC Mandate• CEPT Report 55: Technical conditions for wireless broadband usage of

the band• CEPT Report 56: Options for sharing• Draft CEPT Report 58: solutions for sharing between WBB and PMSE

(video links)

• Draft ECC Recommendation(15)04: guidance for sharing framework between MFCN and PMSE

• Protection Zone: geographical area and maximum field strength level

• PMSE receivers in the zone will not be subject to harmful interference caused by WBB transmissions

• A protection zone is normally applicable for a defined frequency range and time period.

• Rely on mechanisms making available proper information on PMSE including its position (e.g. database)

LSA in 2.3-2.4 GHz – principles for sharing with PMSE

PMSE scenarios Typical applications Possible Implications on the protection zone

Frequent or permanent use, specific location

TV studio Permanent protection zone

Theatre, stadium Permanent protection zonedynamic protection zoneprotection zone and its possible dimensions known well in advance

Temporary use, specific location, (limited mobility possible in pre-defined area)

Special events (e.g. Cycling races, Marathons, Formula One),

Dynamic protection zone, protection zone and its possible dimensions known well in advance

Temporary use, anywhere, anytime, unplanned, mobility possible

TV news, governmental use

Dynamic protection zone, protection zone needed with a short notice, location may vary due to mobility

Other possible sharing scenarios

• Sharing between MFCN and FSS earth stations in the 3.6-3.8 GHz band: new study on guidelines for sharing (where appropriate with LSA).

• Coexistence between the Fixed Service (FS) and uncoordinated Fixed-Satellite Service (FSS) earth stations in the band 17-19.7 GHz: assessment of a geo-location database approach to identify the frequencies at which the receivers of FSS earth stations would not be subject to interference from Fixed Service links at a given location.

• Considerations of ETSI activities on geolocation solutions for coexistence at 5.8 GHz between Road-tolling applications and ITS.

• New study to assess requirements for future cognitive radio enabled Short Range Devices, including the analysis of geolocation database. See http://cept.org/ecc/tools-and-services/ecc-questionnaires

THANKS FOR YOUR ATTENTION

bruno.espinosa@eco.cept.org

www.cept.org/ecc