3GPP's progress in delivering interoperable LTE Public Safety...
Transcript of 3GPP's progress in delivering interoperable LTE Public Safety...
LTE World Summit, June 2013. Author: Iain Sharp, Netovate 1
© 3GPP 2012
© 3GPP 2013
3GPP's progress in delivering interoperable LTE Public Safety Standards
Iain Sharp
Director, Netovate
LTE World Summit, June 2013. Author: Iain Sharp, Netovate 2
© 3GPP 2012
© 3GPP 2013
Introduction
Standards used for commercial cellular and critical communications have historically been separate
New interest today in adapting LTE for critical communication and public safety applications
3GPP is working in collaboration with the critical communication industry to deliver standards
LTE World Summit, June 2013. Author: Iain Sharp, Netovate 3
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Commercial cellular
Benefits of vast success:Huge R&D investment and innovationEconomy of scaleHigh speed, multimedia
But:Not optimized for Public Safety
LTE World Summit, June 2013. Author: Iain Sharp, Netovate 4
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Public Safety/Critical Communications
Features:RobustExcellent group operationPriority controlDirect mode
But:Expensive due to limited volumeSlower evolution than commercial cellular
Etc,…
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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
Started standards process in 3GPP
Tetra + Critical Communications Association
Committed to LTE for broadband critical communication systems
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3GPP Cooperation
TC TETRA
Requirements & Technical Input
LTE Enhancements
Preserve strengths of LTE while also adding features needed for public safety
Maximise the technical commonality between commercial and public safety aspects Cellular
Industry
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Striking a balance –the sliding scale
More customizationLess customization
More COTS technology reuse
Lower costs
Faster standardization
Less delivery risk
More operatingmodes supported
Performance (KPI) improvements
Better support for “difficult”radio situations ?
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Public safety scope in 3GPP
Radio Layer FeaturesFrequency band supportPower level support
Radio enablers for system features
System FeaturesProximity services (ProSE)
Group call on LTE enablers (GCSE_LTE)
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Allow devices in close proximity to communicate directly
• Reduce network load• Increase capacity in given bandwidth• Allow communication in areas without
network coverage
Proximity services objectives
Also interest forconsumer applications
Public safety only
From 3GPP TR 22.803
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Proximity services (ProSE)
Cell Site
Cell Site
Network
Current LTE CommunicationPath
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Proximity services (ProSE)
Cell Site
Cell Site
Network
1
2
Network Assisted Discovery
LTE World Summit, June 2013. Author: Iain Sharp, Netovate 12
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Proximity services (ProSE)
Cell Site
Cell Site
Network
Direct Communication with Proximity Service
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Proximity services (ProSE)
Cell Site
Network
Locally Routed Communication with Proximity Service
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Proximity services (ProSE)
Cell Site
Network
User Equipment to Network Relay
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Enable efficient group communication• Dynamic groups with mobile usersand dispatchers
• Support for floor control(eg push to talk mode)
• Large groups (perhaps up to 5000)• Low latency to add users, obtain channels
Group call enablers objectives
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Group calling
Dispatcher
Cell Site
GroupMembers
ProSE RelayCell Site
Group Call EnabledLTE Network
Group Callapplicationsever
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Group call application/enabler split
Split between application and LTE layers still being developed. Proposals:• Application layer: service behavior and control• LTE layer: mobility and radio• Joint: performance, service interaction
What is API protocol?
G.C. Network Application G.C. Handset Application
3GPP LTE Network Layers 3GPP LTE Handset Layers
Network API Handset API
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3GPP Phasing
3GPP Standards releases last 18‐24 monthsMajor work items typically span several releases• Deliver minimum viable solution and enhance later
Anticipate that public safety will span more than one release
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3GPP Release 12 roadmap
2013 2014 2015
JuneRequirements freeze(Postponed from March for public safety work)
DecemberArchitecture freeze
JuneSignalling freeze Release 12
Implementationsavailable?
Requirements
Architecture
Protocols
Bug fixing
Later phase enhancements….
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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
Migration requirements for LTE Public Safety need to be carefully considered• Common groups• Voice migration/co‐existence • Handset capabilities
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Participate in person Be visible
Provide technical leadership
Bring contributions
Public Safety community role in delivering LTE standards
3GPP needs your physical presence and active participation
Ensure LTE technology re‐use
3GPP must balance priorities of all members• Contributions drive the work
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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:• Spectrum• Regulation• Application designs• Legacy coexistence and migration strategies• Handset and infrastructure ecosystem
Work beyond 3GPP
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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 of reuse Vs customization?• 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
Conclusion
?
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Iain Sharp
Director, Netovate
• Consultancy• Training• Intellectual property
For more information:
www.3gpp.org/Public-Safety
netovate.com/white-papers/Netovate training course December 2013