Upload
hester-webb
View
221
Download
0
Tags:
Embed Size (px)
Citation preview
Survivability Considerations for Design of Government Private Wireless Networks
Clay Whitehead
Motorola
Networks and Enterprise
2
Private 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
What is Land Mobile Radio?
3
Private Land Mobile Radio
• 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
When do LMR Systems Fail?
4
Private Land Mobile Radio
• 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
What Happens to First Responder Communication Systems?
5
Private Land Mobile Radio
• 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
Where Can We Improve Survivability?
7
Private Land Mobile Radio
• Denser site configuration; more RF saturation
• More overlap between sites, including simulcast cells in the urban areas
• Individual site failures have less impact
LMR Radio System Coverage – Illinois Starcom 21 Network
8
Private Land Mobile Radio
• 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
IBWA - In Building Wireless Alliance
9
Private Land Mobile Radio
• 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
Enhance LMR Communication Site Standards
10
Private Land Mobile Radio
• Deficit Reduction Act of 2005 mandates spectrum clearing by February 17, 2009
• Various associations seeking additional spectrum for public safety
746 752 758 764 770 776 782 788 794 800 806
Gu
ard
Ba
nd
Gu
ard
Ba
nd
60 61 62 63 64 65 66 67 68 69
1 M
Hz
1 M
Hz 12
MHz12MHz
Gu
ard
Ba
nd
Gu
ard
Ba
nd
1 M
Hz
1 M
Hz
2 M
Hz
Gu
ard
Ba
nd
2 M
Hz
Gu
ard
Ba
nd
15MHz
15MHz
CMRS(to be auctioned)
CMRS(to be auctioned)
Additional Spectrum Needed for First Responders
11
• 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
Network Operations Centers
Private Land Mobile Radio
12
Private LandMobile Radio
PublicCommercial
Cellular
PublicBroadband
Mesh, 802.16Private
Broadband
IP SoftSwitching
Custom:CoverageCapacityCapabilityControl
Opportunistic Use of:Consumer CoverageConsumer Capability
PRIVATE PUBLIC
Future of Communications for Government Agencies
Private Land Mobile Radio
13
Issue Current Solutions Future EnhancersPrimaryRadioSystem Down
CellularCarriersDown
Deployable infrastructureto restore primary service
Backup sites
Radios programmed forother nearby systems
Intelligent Mobile Network to route data from anySource…Seamless Mobility
Satellite phone handsets
Parked vehicular broadband satellite
Software Define Radios forsingle radio multi-band and multi-mode access
P25 Voice and Data overany available Broadband IP
Vehicle in motion broadbandSatellite > P25 voice/data > streaming video > VoIP phone > WLAN hot spot
Private Land Mobile Radio
Emerging Technologies for Disaster Recovery
14
Issue Current Solutions Future EnhancersExtendedPowerOutage
Fixed – generators, UPS
Street – mobile radios (gas)
Run fresh batteries out toPortable radio users
FUEL CELL Chargers
FUEL CELL Radios
Private Land Mobile Radio
Emerging Technologies for Alternate Energy Sources
15
Private Land Mobile Radio
• 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
Summary
16
Private Land Mobile Radio
Project 25 Technology Interest Grouphttp://www.project25.org/
Association of Public Safety Communications Officershttp://www.apcointl.org/
In Building Wireless Alliancehttp://www.i-bw.org/
Spectrum Coalition for Public Safetyhttp://www.spectrumcoalition.dc.gov/
National Public Safety Telecommunications Councilhttp://www.npstc.org/
Fuel Cells 2000http://www.fuelcells.org/
Additional Web-based Resources