Licensed Shared Access (LSA): description
and implementation of the concept in France
in the 2.3-2.4 GHz frequency band
Emmanuel Faussurier
ANFR
Chairman CEPT/WGFM Project Team FM53
[email protected]
26 November 2013
1
Content
I.
LSA concept
1)
2)
3)
Regulatory framework for the use of the radio spectrum
Spectrum management and management of frequency
authorisations
LSA as a complementary tool for spectrum management
II. Implementation of LSA in France in the 2.3-2.4 GHz
frequency band
2
Part I
Draft ECC Report 205
1) Regulatory framework for the use of the radio
spectrum
… Overview of the key regulatory and legal instruments that
govern the use of spectrum
3
Regulatory framework for the use of the radio spectrum
NATIONAL
REGIONAL
GLOBAL
3 levels
Recommendations
Reports
Decisions, Reports,
Recommendations
Radio Regulations
Decisions
Recommendations
Standards
Harmonised standards
Government
(France)
ANFR (National frequency allocation table)
Independent regulatory authorities (ARCEP, CSA)
Government users
General / individual authorisations
4
National legislation
From the radio spectrum to users
Natural physical
resource
Radio spectrum
National legislation
governing the
allocation of
frequency bands
National Table of Frequency Allocations (NTFA)
Governmental use
Commercial use / non governmental
(telecom, broadcasting, amateur, SRDs…)
Domain of use
/
regulatory regime
Fine technical
management of
frequency bands
National legislation
authorising the
use of spectrum
Users
Defence
Public
safety
Civil
aviation
Meteorology
Maritime &
waterways
Radio
Astronomy
…
Individual authorisation
General authorisation
(Individual rights of use)
(No individual rights of use)
Frequency assignments
Individual authorisation
issued by NRA
Users
General authorisation
issued by NRA
2) Spectrum management /
Management of frequency authorisations
• Spectrum management : combination of regulatory procedures
and tools for managing the spectrum resource at radio service or
application level in view of delivering regulatory solutions to
accommodate different types of use, address new spectrum
demand while accounting for existing uses
• Managing frequency authorisations takes place at national
level and focus on adequate procedures for assigning spectrum
to individual users and market regulation
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Spectrum management
• European level : spectrum reviews, compatibility studies,
harmonisation measures
– Regulatory solutions dependent upon the type of “regulatory regime” : critical
impact in terms of objectives of quality of service and coexistence capability
• National level
– ITU-R Radio Regulations and European harmonisation measures provide key
references to administrations for their national spectrum management
– National Tables of Frequency Allocations (NTFAs)
• Critical assets for national administrations to plan the allocation of frequency bands,
whether on an exclusive or shared basis, between various governmental users
which have access to spectrum to perform their own duties, and commercial
services, so that consumers can benefit from innovative applications.
• NTFAs provide visibility and support to policy making on the allocation of this public
resource
– Spectrum sharing as the baseline solution to accommodate new demand
• Spectrum refarming as an option where sharing is not feasible
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Management of frequency authorisations
• Policy objectives and regulatory principles
– Policy objectives for National Regulatory Authorities (NRAs) within EU laid in
Article 8 of the “Framework Directive”.
– Different mechanisms can be established by NRAs for delivering individual
rights of use to undertakings in a given frequency band: e.g. auction, beauty
contest, first come/first served…
• Corresponding procedures must be transparent and non-discriminatory.
– An individual authorisation includes rights and obligation for the licensee.
• How to acquire an individual right of use?
1) apply to the NRA
2) seek under the principles of “spectrum trading” a commercial agreement with a
licensee that detains a “tradable right”
• Baseline options in case of unused spectrum?
– the licensee can trade the spectrum or
– the usage rights can be reviewed by the NRA
8
Part III
3) LSA as a complementary tool for spectrum
management
–
–
–
–
Background and justification
ASA/LSA concept & mobile broadband
Definition
Conclusion
9
Background and justification
• Principles initially based on industry proposal for Authorised
Shared Access (ASA)
– ASA introduced as an enabler to unlock access to additional frequency bands
for mobile broadband under individual licensed regime
– Alternative to spectrum clearing/refarming
800
900
MHz MHz
1800
MHz
Licensed
2.1
GHz
2.3
GHz
2.4
GHz
2.6
3.6
GHz
3G/4G
ASA with
Unlicensed
military/
wifi
wireless camera
3.6
GHz
Licensed
3.8
GHz
ASA with
satellites
5 GHz
Unlicensed
wifi
Source: presentation at WG FM May 2011, doc. FM(11)116
• Concept extended as Licensed Shared Access (LSA)
– Potential for application to other services in addition to its application to the
Mobile service (WG FM April 2012)
– General analysis to be carried out by Project Team FM53 in parallel with RSPG
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ASA/LSA concept & mobile broadband (1)
Spectrum
licensee
Application/granting of
spectrum use rights
Administration/
Regulator
Conditions and timelines to
free up the spectrum
Conventional
spectrum in
ECS bands
Incumbent
Licensed
spectrum
Base station
Base station controls
device access to
licensed spectrum
Base station
Base station controls device
access to licensed spectrum
Multi-bands
Device
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ASA/LSA concept & mobile broadband (2)
Spectrum
licensee
Administration/
Regulator
Application/granting of
spectrum use rights
where/when ASA/LSA
spectrum is available
(Dynamic)
Conditions of access to the
“ASA/LSA spectrum”
enabling protection of primary
incumbent user
Incumbent
Licensed
spectrum
Permitted
ASA/LSA
spectrum
Base station
Base station controls
device access to
licensed spectrum
(licensed, ASA/LSA)
Base station
Incumbent
Base station controls device
access to licensed spectrum
(licensed, ASA/LSA)
Multi-bands
Device
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Definition
• RSPG working definition
– “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 LSA framework, the additional users are allowed 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 QoS”.
13
Conclusions of draft ECC Report 205
Scope of LSA
• LSA is a complementary spectrum management tool that fits under
an “individual licensing regime”.
• LSA aim to facilitate the introduction in a frequency band of new
users, which require a certain level of guarantee in terms of
spectrum access, while maintaining incumbent services in the
band.
• LSA licensees and incumbents operate different applications
and are subject to different regulatory constraints. They would
each have exclusive individual access to a portion of spectrum at a
given location and time.
• The first practical use case of LSA will be to provide access to
additional spectrum for mobile broadband services (MFCN).
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Sharing framework (1)
• 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.
• The “sharing framework” can be understood as a set of sharing rules
or sharing conditions that will materialise the change, if any, in the
spectrum rights of the incumbent(s) and define the spectrum, with
corresponding technical and operational conditions, that can be made
available for alternative usage under LSA.
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Sharing framework (2)
Incumbent A
Station / frequency
assignment
Incumbent A
+ sharing framework
Spectrum rights of incumbent A under
NTFA with LSA : service allocation(s)
limited in accordance with the terms of
the “sharing framework”.
The “sharing framework” also defines the
spectrum that can be made available for
alternative usage under LSA.
Frequency allocation
• LSA impacts the national allocation of a frequency band, which
is a sovereign decision on the destination of this public resource.
• The decision on the services to be protected within the sharing
framework (incumbent) is to be made by national
administrations at the light of national policy objectives, and taking
into account international obligations and community law in the case
of EU member states.
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Authorisation process
• The Administration/NRA would set the authorisation process
with a view to delivering, in a fair, transparent and nondiscriminatory manner, individual rights of use of spectrum to LSA
licensees, in accordance with the sharing framework defined
beforehand.
• LSA does not prejudge the modalities of the authorisation
process to be set by Administration/NRAs taking into account
national circumstances and market demand.
• LSA is not a tool to regulate the ECS market and is based on
different principles than “Spectrum trading”. It could
nevertheless be necessary to check that competition is not
adversely affected. The possibility for a governmental entity to
engage in trading its spectrum holdings is a national institutional
issue.
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European harmonisation
• From a European, perspective, LSA assists addressing the market
demand for harmonised introduction of new applications in specific
bands characterised by fragmented incumbent uses which have to
be maintained in different countries. National administrations
therefore require some flexibility in the national implementation
to enable the protection of incumbent services.
• A CEPT harmonisation measure would designate a frequency
band and define harmonised conditions of use (e.g. BEM, radio
interface). Investigations at European level on the various sharing
constraints aim to ensure that corresponding harmonised standard
include the necessary tools for implementation of sharing
mechanisms required for operation in the band.
– See draft ECC Decision developed by CEPT/WGFM Project Team FM52
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Mobile/Fixed Communication Networks (MFCN)
• The first harmonisation measure developed by CEPT that includes
the possibility for implementation of LSA is for the introduction of
MFCN in 2.3-2.4 GHz band.
• LSA could be one solution for mobile network operators to
access complementary spectrum for MFCN and should not
preclude efforts to secure exclusive access to spectrum for
mobile broadband. Current licensing regime based on exclusive
access for mobile broadband has well-known benefits, such as
enabling mobile network operators to guarantee quality of service,
good interference management and a high degree of market
certainty necessary to create adequate incentives for investment
and innovation. Under certain conditions, LSA is expected to
provide similar benefits as traditional exclusive access.
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Part II
Implementation of LSA in France in the 2.3-2.4 GHz
frequency band
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Scope of work
• Working group established in January 2013 and
coordinated by ANFR
– Objective of defining suitable “sharing framework”
– Involvement of relevant parties: ARCEP, Ministry of defence, DGA,
mobile operators, industry stakeholders
– Initial investigations have aimed to deliver exhaustive inventory of
spectrum usage and planned evolution in France in the 2.3-2.4 GHz
frequency band
• Identification of critical military applications to be maintained
• Compatibility studies
– First phase : impact of the mobile service on aeronautical telemetry
– Second phase : impact of aeronautical telemetry on the mobile service
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1st phase : impact of the mobile service on aeronautical telemetry
 Static geographical sharing : one example of simulation to show
where BS could be deployed (this is not the final deployment map)
macro-rural 45m
macro-urban 30m
micro 6m
pico 1.5m
1 BS in simulation
Protection level:
N - 6 dB
(ECC Report 172)
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2nd phase : impact of aeronautical telemetry on the mobile service
• 3 main telemetry use scenarios
Base station
Interference criteria
Antenna tilt
Polarisation
Macro
Micro
-107,4 dBm
-104,4 dBm
-6°
0
Linear
• Scenario 1 : Atlantic – Mediterranean flight transfer (for illustration)
Altitude: 100m to 13000m
Speed: 300km/h
Objective: calculation for 3
identified BS of the time %
where the interference
criteria is exceeded (for a
scenario duration of a few
hours)
A
C
B
 Impact on LTE network to be assessed (Quality of service)
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Further work
• Initial implementation foreseen based on “static
geographical sharing”
• Protection of telemetry sites: definition of max EM field to
be met at specific location is under investigation
Thank you!
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