Transcript Frequency Coordination - American Association of State

Frequency Coordination
An AASHTO service for all Public safety
Public Safety Radio
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First Responders (Police, Fire and EMS)
Highway Maintenance
Traffic Control
Advisories
Data
New services (VII, DSRC, ITS)
The Role of the Coordinator
The FCC defines frequency coordination as:
“The process of obtaining a frequency that
will most effectively meet the applicant’s
needs while minimizing interference to
licensees already operating in the band”
Many states have only ONE coordinator
AASHTO Services
• AASHTO can coordinate all Public Safety
frequencies:
 Relieving the local coordinator’s burden
 Rapidly process applications leading to faster
licensing
 Competitive Pricing
 AASHTO
is the Public Safety Frequency
Coordinator for the State of California
Special Committee on Wireless
Technology
• Purpose
 Support Frequency Coordination Needs
 Input to FCC Rules and Regulations
• SCOWT conferences provide:
 Training
 New
Techniques and Technologies
 New FCC Rules and Regulations
 Mentoring
 Support
Contact
Bill Brownlow, AASHTO
Telecommunications Manager
202-624-5817
[email protected]
Frequency Coordination
RadioSoft’s full-time staff of RF Engineers
and Coordinators
• Deliver complex radio system engineering
and design solutions
Other Options
• Cellular Telephone / Nextel / Pager
 Only in highly populated areas
 Easily overloaded in an emergency
 Inflexible design
• Email – Blackberry
 Same limitations as Cellular
 Unsafe to operate while driving
Commercial vs. Public Safety
• Public Safety Systems cover a
geographical area regardless of population
• Commercial networks allocated by
population rather than area
• Systems overload / shut down in
emergencies
• One-to-One not One-to-Many design
• No control
New Services
• VII – Vehicle to Infrastructure Integration
• DSRCS – Dedicated Short-Range
Communications Service
• 75 MHz reclaimed from Federal use
 1 Control Channel
 2 10 MHz Public Safety only channels
 “Communications involving the safety of life have
access priority over all other DSRC communications.”
DSRC Issues
• State and Local Governments may have a
non-exclusive license for all DSRCS
frequencies based on geo-political
boundaries (State, County, City)
• All other eligible applicants are issued
licenses based on their proposed area of
operations which may include nationwide.
DSRC Issues (2)
Command and Control
• No frequencies assigned for commands
 No spectrum assigned for talking to RSUs
• No frequencies assigned for reporting
 No assigned spectrum for the RSUs to talk
back to Central Operations
The Spectrum Conundrum
• Virtually ALL Public Safety
Communications is in 4 Bands
• 700 – 869 MHz Band
• 450 – 512 MHz UHF Band
• 150 – 170 MHz VHF Band
 70% of all Licensed Stations are in this Band
• 30 – 50 MHz Low Band