Transcript Document

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
further consideration.
geolocation most promising approach. Requires
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.
Information from
WSD
Geo-location DB
Info on
Broadcasting
Info on PMSE
Protection
requirements
translated
into constraints
for WSD operation
Info on RAS
Info on ARNS
Info on mobile
services
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 – Technical measures
•
•
•
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 (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
LSA in 2.3-2.4 GHz – principles for sharing with
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)
PMSE scenarios
Typical applications
Frequent or permanent TV studio
use, specific location
Theatre, stadium
Possible Implications
on the protection zone
Permanent protection
zone
Permanent protection
zone
dynamic protection
zone
protection zone and its
possible dimensions
known well in advance
Temporary use,
Special events (e.g.
Dynamic protection
specific location,
Cycling races,
zone, protection zone
(limited mobility
Marathons, Formula
and its possible
possible in pre-defined One),
dimensions known well
area)
in advance
Temporary use,
TV news, governmental Dynamic protection
anywhere, anytime,
use
zone, protection zone
unplanned, mobility
needed with a short
possible
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 geolocation 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
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