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LTE Standards for Public Safety – 3GPP view

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Balazs Bertenyi …

Balazs Bertenyi
Chairman of 3GPP TSG-SA
Critical Communications World, 21st-24th May 2013

Published in: Technology, Business

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  • 1. Critical Communications World, 21st-24th May 2013 1© 3GPP 2012© 3GPP 2013LTE Standards for Public Safety – 3GPP viewBalazs BertenyiChairman of 3GPP TSG-SA
  • 2. Critical Communications World, 21st-24th May 2013 2© 3GPP 2012© 3GPP 2013IntroductionStandards used for commercial cellular and criticalcommunications have historically been separateNew interest today in adapting LTE for criticalcommunication and public safety applications3GPP is working in collaboration with the criticalcommunication industry to deliver standards
  • 3. Critical Communications World, 21st-24th May 2013 3© 3GPP 2012© 3GPP 2013Commercial cellularBenefits of vast success:Huge R&D investment and innovationEconomy of scaleHigh speed, multimediaNetwork capacityBut:Not optimized for critical communications(Generally) no strong coverage obligations
  • 4. Critical Communications World, 21st-24th May 2013 4© 3GPP 2012© 3GPP 2013Critical communicationsFeatures:RobustExcellent group operationPriority controlDirect modeBut:Expensive due to limited volumeSlower evolution than commercialcellularEtc,…
  • 5. Critical Communications World, 21st-24th May 2013 5© 3GPP 2012© 3GPP 2013Commitment to LTENational Public Safety TelecommunicationsCouncilSpectrum and US$7bn funding for LTE-based nationalUS public safety network at 700MHzStarted standards process in 3GPPTetra + Critical Communications AssociationCommitted to LTE for broadband critical communicationsystems
  • 6. Critical Communications World, 21st-24th May 2013 6© 3GPP 2012© 3GPP 20133GPP CooperationTC TETRARequirements & Technical InputLTE EnhancementsPreserve strengths of LTE while also adding featuresneeded for public safetyMaximise the technical commonality betweencommercial and public safety aspectsCellularIndustry
  • 7. Critical Communications World, 21st-24th May 2013 7© 3GPP 2012© 3GPP 2013Striking a balance –the sliding scaleMore customizationLess customizationMore COTS technology reuseLower costsFaster standardizationLess delivery riskMore operatingmodes supportedPerformance (KPI) improvementsBetter support for “difficult”radio situations?
  • 8. Critical Communications World, 21st-24th May 2013 8© 3GPP 2012© 3GPP 2013Public safety scope in 3GPPRadio Layer FeaturesFrequency band supportPower level supportRadio enablers for system featuresSystem FeaturesProximity services (ProSE)Group call on LTE enablers (GCSE_LTE)
  • 9. Critical Communications World, 21st-24th May 2013 9© 3GPP 2012© 3GPP 2013Allow devices in close proximity tocommunicate directly• Reduce network load• Increase capacity in given bandwidth• Allow communication in areas withoutnetwork coverageProximity services objectivesAlso interest forconsumerapplicationsPublic safetyonlyFrom 3GPP TR 22.803
  • 10. Critical Communications World, 21st-24th May 2013 10© 3GPP 2012© 3GPP 2013Proximity services (ProSE)CellSiteCellSiteNetworkCurrent LTE CommunicationPath
  • 11. Critical Communications World, 21st-24th May 2013 11© 3GPP 2012© 3GPP 2013Proximity services (ProSE)CellSiteCellSiteNetwork12Network Assisted Discovery
  • 12. Critical Communications World, 21st-24th May 2013 12© 3GPP 2012© 3GPP 2013Proximity services (ProSE)CellSiteCellSiteNetworkDirect Communication with Proximity Service
  • 13. Critical Communications World, 21st-24th May 2013 13© 3GPP 2012© 3GPP 2013Proximity services (ProSE)CellSiteNetworkLocally Routed Communication with Proximity Service
  • 14. Critical Communications World, 21st-24th May 2013 14© 3GPP 2012© 3GPP 2013Proximity services (ProSE)CellSiteNetworkUser Equipment to Network Relay
  • 15. Critical Communications World, 21st-24th May 2013 15© 3GPP 2012© 3GPP 2013Enable 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 channelsGroup call application is separate from the 3GPPsystem enablers• Application is outside the scope of 3GPPGroup call enablers objectives
  • 16. Critical Communications World, 21st-24th May 2013 16© 3GPP 2012© 3GPP 2013Group callingDispatcherCell SiteGroupMembersProSE RelayCell SiteGroup Call EnabledLTE NetworkGroup Callapplicationsever
  • 17. Critical Communications World, 21st-24th May 2013 17© 3GPP 2012© 3GPP 2013Group call application/enabler splitSplit between application and LTE layers still being developed.Proposals:• Application layer: group management, floor control decisions, legacyinteroperability• LTE layer: mobility, service continuity, radio efficiency• Joint: performance, service interactionWhat is the nature of the APIs?• Pure IP sockets? What is the application protocol?• Something non-IP?G.C. Network Application G.C. Handset Application3GPP LTE Network Layers 3GPP LTE Handset LayersNetwork API Handset API
  • 18. Critical Communications World, 21st-24th May 2013 18© 3GPP 2012© 3GPP 2013Work Item 3GPP Release Work Item DocumentReferenceProximity-based ServicesSpecification(ProSe)12 SP-120883Group Communication SystemEnablers for LTE (GCSE_LTE)12 SP-120876Public Safety Broadband HighPower User Equipment for Band 14for Region 211 RP-1203623GPP public safety work itemshttp://www.3gpp.org/ftp/Information/WORK_PLAN/
  • 19. Critical Communications World, 21st-24th May 2013 19© 3GPP 2012© 3GPP 20133GPP Phasing3GPP Standards releases last 18-24 monthsMajor work items typically span several releases• Break complex problems in to solvable pieces• Deliver minimum viable solution and enhance laterAnticipate that public safety will span more than onerelease
  • 20. Critical Communications World, 21st-24th May 2013 20© 3GPP 2012© 3GPP 20133GPP Release 12 roadmap2013 2014 2015JuneRequirements freeze(Postponed from March forpublic safety work)DecemberArchitecture freezeJuneSignalling freeze Release 12Implementationsavailable?RequirementsArchitectureProtocolsBug fixingLater phase enhancements….
  • 21. Critical Communications World, 21st-24th May 2013 21© 3GPP 2012© 3GPP 2013Migration and legacy interworkingCommercial cellular industry has strong requirementson smooth technology migration and interworking• The tighter the legacy interworking the morecostly/complex the systemInterworking requirements between CriticalCommunications Broadband and TETRA need to becarefully considered• Common groups• Voice migration (co-existence of VoIP and TETRA voice)• Handset capabilities
  • 22. Critical Communications World, 21st-24th May 2013 22© 3GPP 2012© 3GPP 2013Participate inpersonBe visibleProvidetechnicalleadershipBringcontributionsDelivering architecture and radiostandardsLiaison statements are a poor substitute forknowledgeable people in the meeting• We need your physical presence and activeparticipationTake care to preserve meaningful reuse ofCOTS LTE technology3GPP must balance priorities of all members• Contributions drive the work
  • 23. Critical Communications World, 21st-24th May 2013 23© 3GPP 2012© 3GPP 2013Standards are one element in enabling a market• 3GPP will deliver LTE enhancements for public safety inRelease 12Potential users need to also consider:• Spectrum• Regulation• Application designs• Legacy coexistence and migration strategies• Handset and infrastructure ecosystemWork beyond 3GPP
  • 24. Critical Communications World, 21st-24th May 2013 24© 3GPP 2012© 3GPP 20133GPP has started work on public safety standards• Meet market needs in an interoperable manner3GPP is cooperating with the public safety community• Technical participation in Release 12 is neededWhere to balance benefits of reuse Vs customization?• New business opportunities with commercial mobile operatorsInterworking and migration need careful considerationLTE based public safety networks• Use common off the shelf technology• Improve on existing capabilities with broadband and multimediaConclusion?
  • 25. Critical Communications World, 21st-24th May 2013 25© 3GPP 2012© 3GPP 2013www.3gpp.orgMoreInformationabout 3GPP:contact@3gpp.orgThank You !Balazs BertenyiChairman of 3GPP TSG-SA