Transcript Presentation title

LTE Standards for Public Safety – 3GPP view
© 3GPP 2012
Balazs Bertenyi
Chairman of 3GPP TSG-SA
Critical Communications World, 21st-24th May 2013
© 3GPP 2013
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Introduction
Standards used for commercial cellular and critical
communications have historically been separate
New interest today in adapting LTE
for critical
© 3GPP 2012
communication and public safety applications
3GPP is working in collaboration with the critical
communication industry to deliver standards
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Commercial cellular
Benefits of vast success:
Huge R&D investment and innovation
Economy of scale
High speed, multimedia
© 3GPP 2012
Network capacity
But:
Not optimized for critical communications
(Generally) no strong coverage obligations
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Critical communications
Features:
Robust
Excellent group operation
Priority control
Direct mode © 3GPP 2012
But:
Etc,…
Expensive due to limited volume
Slower evolution than commercial
cellular
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Commitment to LTE
National Public Safety Telecommunications
Council
Spectrum and US$7bn funding for LTE-based national
US public safety network at 700MHz
© 3GPP
2012
Started standards
process
in 3GPP
Tetra + Critical Communications Association
Committed to LTE for broadband critical communication
systems
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3GPP Cooperation
Preserve strengths of LTE while also adding features
needed for public safety
Maximise the technical commonality between
commercial and public safety aspects
Cellular
Industry
© 3GPP 2012
TC TETRA
Requirements & Technical Input
LTE Enhancements
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Striking a balance –
the sliding scale
Less customization
More customization
More operating
modes supported
More COTS technology reuse
Lower costs
© 3GPP 2012
Performance (KPI) improvements
Faster standardization
Less delivery risk
Critical Communications World, 21st-24th May 2013
Better support for “difficult”
radio situations
?
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Public safety scope in 3GPP
System Features
Proximity services (ProSE)
Group call on LTE enablers (GCSE_LTE)
© 3GPP 2012
Radio Layer Features
Frequency band support
Power level support
Radio enablers for system features
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Proximity services objectives
Allow devices in close proximity to
communicate directly
• Reduce network load
• Increase capacity in given bandwidth
• Allow communication in areas without
network coverage
© 3GPP 2012
Also interest for
consumer
applications
Public safety
only
From 3GPP TR 22.803
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Proximity services (ProSE)
Current LTE Communication
Path
Cell
Site
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Network
Cell
Site
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Proximity services (ProSE)
Network Assisted Discovery
1
Cell
Site
© 3GPP 2012
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Network
Cell
Site
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Proximity services (ProSE)
Direct Communication with Proximity Service
Cell
Site
© 3GPP 2012
Network
Cell
Site
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Proximity services (ProSE)
Locally Routed Communication with Proximity Service
Cell
Site
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Network
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Proximity services (ProSE)
User Equipment to Network Relay
Cell
Site
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Critical Communications World, 21st-24th May 2013
Network
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Group call enablers objectives
Enable efficient group communication
• Dynamic groups with mobile users
and dispatchers
• Support for floor control
(eg push to talk mode)
3GPP 2012
• Large groups (perhaps up to© 5000)
• Low latency to add users, obtain channels
Group call application is separate from the 3GPP
system enablers
• Application is outside the scope of 3GPP
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Group calling
Group Call
application
sever
Group Call Enabled
LTE Network
Dispatcher
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Cell Site
Cell Site
ProSE Relay
Group
Members
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Group call application/enabler split
G.C. Network Application
G.C. Handset Application
Network API
Handset API
3GPP LTE Network Layers
3GPP LTE Handset Layers
Split between application and LTE layers still being developed.
Proposals:
© 3GPP 2012
• Application layer: group management, floor control decisions, legacy
interoperability
• LTE layer: mobility, service continuity, radio efficiency
• Joint: performance, service interaction
What is the nature of the APIs?
• Pure IP sockets? What is the application protocol?
• Something non-IP?
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3GPP public safety work items
Work Item
3GPP Release
Proximity-based Services
Specification
(ProSe)
Group Communication System
Enablers for LTE (GCSE_LTE)
Public Safety Broadband High
Power User Equipment for Band 14
for Region 2
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Work Item Document
Reference
SP-120883
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SP-120876
11
RP-120362
http://www.3gpp.org/ftp/Information/WORK_PLAN/
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3GPP Phasing
3GPP Standards releases last 18-24 months
Major work items typically span several releases
• Break complex problems in to solvable pieces
• Deliver minimum viable solution and enhance later
© 3GPP 2012
Anticipate that public safety will span more than one
release
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3GPP Release 12 roadmap
Requirements
Architecture
Protocols
Bug fixing
Later phase enhancements….
© 3GPP 2012
2013
June
Requirements freeze
(Postponed from March for
public safety work)
2014
June
Signalling freeze
2015
Release 12
Implementations
available?
December
Architecture freeze
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Migration and legacy interworking
Commercial cellular industry has strong requirements
on smooth technology migration and interworking
• The tighter the legacy interworking the more
costly/complex the system
Interworking requirements between Critical
Communications Broadband and TETRA need to be
carefully considered
© 3GPP 2012
• Common groups
• Voice migration (co-existence of VoIP and TETRA voice)
• Handset capabilities
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Delivering architecture and radio
standards
Participate in
person
Be visible
Provide
technical
leadership
Bring
contributions
2012
Liaison statements are a poor© 3GPP
substitute
for
knowledgeable people in the meeting
• We need your physical presence and active
participation
Take care to preserve meaningful reuse of
COTS LTE technology
3GPP must balance priorities of all members
• Contributions drive the work
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Work beyond 3GPP
Standards are one element in enabling a market
• 3GPP will deliver LTE enhancements for public safety in
Release 12
Potential users need to also consider:
•
•
•
•
•
© 3GPP 2012
Spectrum
Regulation
Application designs
Legacy coexistence and migration strategies
Handset and infrastructure ecosystem
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Conclusion
3GPP has started work on public safety standards
• Meet market needs in an interoperable manner
3GPP is cooperating with the public safety community
• Technical participation in Release 12 is needed
Where to balance benefits© 3GPP
of reuse
Vs customization?
2012
• New business opportunities with commercial mobile operators
Interworking and migration need careful consideration
LTE based public safety networks
• Use common off the shelf technology
• Improve on existing capabilities with broadband and multimedia
?
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Thank You !
Balazs Bertenyi
Chairman of 3GPP TSG-SA
© 3GPP 2012
More
Information
about 3GPP:
www.3gpp.org
[email protected]
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