Transcript Document
Survivability Considerations for Design of Government Private Wireless Networks Clay Whitehead Motorola Networks and Enterprise Private Land Mobile Radio What is Land Mobile Radio? • Terrestrial based wireless communications • Offers customized coverage, capacity, control and feature sets • Primarily hand-held communications devices • One to many dispatch call model – voice is priority • Disparate frequency bands – government agencies hold the licenses • Private government funded network • Mostly proprietary technology, but rapidly moving towards standards-based platforms Private Land Mobile Radio When do LMR Systems Fail? • • • • • • • • • Extended power grid failures Failure of back-up power systems Network connectivity lost Extensive flooding of facilities and equipment shelters Towers fail Point to point links fail Single points of failure in critical components/subsystems E911/Dispatch center evacuations Lightning damage to equipment Private Land Mobile Radio What Happens to First Responder Communication Systems? • Many remain fully or partially operational – Full coverage and capacity – Fallback modes of operation – Reduced coverage or capacity • Those impaired or with minor failures are usually restored shortly thereafter Private Land Mobile Radio Where Can We Improve Survivability? • Robust coverage and RF saturation/innovative in-building penetration solutions • Stricter site design standards • Redundancy of all critical control components • Allocate additional capacity and spectrum for State and Local Government (broadband) • Enhance network security and monitoring tools • Soft-switch interfaces between public and private systems • Fuel cell technology for handheld/mobile devices • Enhanced disaster recovery solutions Private Land Mobile Radio LMR Radio System Coverage – Palmetto 800 Network Palmetto 800 Private Land Mobile Radio LMR Radio System Coverage – Illinois Starcom 21 Network • Denser site configuration; more RF saturation • More overlap between sites, including simulcast cells in the urban areas • Individual site failures have less impact Private Land Mobile Radio IBWA - In Building Wireless Alliance • Composed of manufacturers, commercial real estate companies, cellular carriers and first responders • Value to public safety – Ability to communicate within buildings and – – – – from inside the building to command and control locations Improved situational awareness, command and control Fewer injuries and loss of property and life Decreased response time for fire or injury emergency Critical communications for instruction and evacuation Private Land Mobile Radio Enhance LMR Communication Site Standards • Design for Category 5 hurricanes in coastal areas/hurricane landfall zones – Towers with higher wind load ratings – Hardened physical security • Elevated sites and power systems • Main Switching Office redundancy • Back up site connectivity – – – – Telco Point to point microwave Spread spectrum technologies Satellite Private Land Mobile Radio Additional Spectrum Needed for First Responders • Deficit Reduction Act of 2005 mandates spectrum clearing by February 17, 2009 • Various associations seeking additional spectrum for public safety CMRS (to be auctioned) 15 MHz 60 61 62 764 770 12 MHz 63 64 776 782 788 CMRS (to be auctioned) 15 MHz 65 66 67 794 2 MHz Guard Band 758 1 MHz Guard Band 752 2 MHz Guard Band 1 MHz Guard Band 746 800 12 MHz 68 69 806 Private Land Mobile Radio Network Operations Centers • Remotely monitors LMR system health – most do not have this service • Staffed 24/7 • Knowledge database of approved solutions • System labs for problem replication • Access to system platform architects • Automated escalation management system • Quality review process • Remote system software downloads • National Communication System collaboration Private Land Mobile Radio Future of Communications for Government Agencies PRIVATE IP Soft Switching PUBLIC Public Commercial Cellular Private Land Mobile Radio Mesh, 802.16 Private Broadband Custom: Coverage Capacity Capability Control Public Broadband Opportunistic Use of: Consumer Coverage Consumer Capability Private Land Mobile Radio Emerging Technologies for Disaster Recovery Issue Current Solutions Future Enhancers Primary Radio System Down Deployable infrastructure to restore primary service Software Define Radios for single radio multi-band and multi-mode access Cellular Carriers Down Radios programmed for other nearby systems Backup sites Intelligent Mobile Network to route data from any Source…Seamless Mobility Satellite phone handsets Parked vehicular broadband satellite P25 Voice and Data over any available Broadband IP Vehicle in motion broadband Satellite > P25 voice/data > streaming video > VoIP phone > WLAN hot spot Private Land Mobile Radio Emerging Technologies for Alternate Energy Sources Issue Extended Power Outage Current Solutions Future Enhancers Fixed – generators, UPS FUEL CELL Chargers Street – mobile radios (gas) Run fresh batteries out to Portable radio users FUEL CELL Radios Private Land Mobile Radio Summary • All networks should be hardened in terms of physical security, performance and resilience to electro-mechanical failures • Additional spectrum for voice, broadband and multi-media services is critical to first responders • Private network partnerships with public network carriers • Funding, funding, funding Private Land Mobile Radio Additional Web-based Resources Project 25 Technology Interest Group http://www.project25.org/ Association of Public Safety Communications Officers http://www.apcointl.org/ In Building Wireless Alliance http://www.i-bw.org/ Spectrum Coalition for Public Safety http://www.spectrumcoalition.dc.gov/ National Public Safety Telecommunications Council http://www.npstc.org/ Fuel Cells 2000 http://www.fuelcells.org/