apco project 25 wireless data services for smaller public safety agencies
DESCRIPTION
Presentation given at 2009 IEEE International Conference on Technologies for Homeland Security – HST 2009TRANSCRIPT
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Project54 – CATLabUniversity of New Hampshire
Ivan Elhart
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APCO P25 Wireless Data Services for Smaller Public Safety Agencies – Ivan Elhart
Introduction Data communication Vehicle to Infrastructure (V2I)
communication
Problem Expensive APCO P25 equipment
Approach Software Defined P25 Data Base Station
Results and Tests
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APCO P25 Wireless Data Services for Smaller Public Safety Agencies – Ivan Elhart
M. Weiser, "The computer for the 21st century" SIGMOBILE Mobile Computing and Communications Review, vol. 3, no. 3, pp. 3-11, 1999.
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A. L. Kun, W. T. Miller, III, and W. H. Lenharth, "Computers in police cruisers," Pervasive Computing, IEEE, vol. 3, no. 4, pp. 34-41, 2004.
APCO P25 Wireless Data Services for Smaller Public Safety Agencies – Ivan Elhart
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APCO P25 Wireless Data Services for Smaller Public Safety Agencies – Ivan Elhart
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APCO P25 Wireless Data Services for Smaller Public Safety Agencies – Ivan Elhart
APCO Project 25 APCO Project 25 Problem - The high cost of the equipment needed to support mixed voice and data transmissions over private land mobile radio channels
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To outline a system that will allow smaller law enforcement agencies to enable wireless data services in their cruisers in a cost effective way and with a high level of reliability
APCO P25 Wireless Data Services for Smaller Public Safety Agencies – Ivan Elhart
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APCO P25 Wireless Data Services for Smaller Public Safety Agencies – Ivan Elhart
A local NH police department
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APCO P25 Wireless Data Services for Smaller Public Safety Agencies – Ivan Elhart
Voice communication line
Radio Channel
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Voice communication line
APCO P25 Wireless Data Services for Smaller Public Safety Agencies – Ivan Elhart
Radio Channel - TDMA
voice
data
voicevoicevoice
data
A single data line
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A single client Multiple clients Voice priority
APCO P25 Wireless Data Services for Smaller Public Safety Agencies – Ivan Elhart
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APCO P25 Wireless Data Services for Smaller Public Safety Agencies – Ivan Elhart
A single client
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APCO P25 Wireless Data Services for Smaller Public Safety Agencies – Ivan Elhart
A single client Multiple clients dat
a
data
data
data
Channel Usage Collisions
35% 1.61%
4% 0.015%
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A single client Multiple clients Voice priority
APCO P25 Wireless Data Services for Smaller Public Safety Agencies – Ivan Elhart
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APCO P25 Wireless Data Services for Smaller Public Safety Agencies – Ivan Elhart
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APCO P25 Wireless Data Services for Smaller Public Safety Agencies – Ivan Elhart
Project54 – CATLabUniversity of New Hampshire