APCO Project 25 Wireless Data Services for Smaller Public Safety Agencies

Project54 – CATLabUniversity of New Hampshire

Ivan Elhart

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


M. Weiser, "The computer for the 21st century" SIGMOBILE Mobile Computing and Communications Review, vol. 3, no. 3, pp. 3-11, 1999.

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 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

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



A local NH police department


Voice communication line

Radio Channel

Voice communication line


Radio Channel - TDMA

voice

data

voicevoicevoice

data

A single data line

A single client Multiple clients Voice priority



A single client


A single client Multiple clients dat

a

data

data

data

Channel Usage Collisions

35% 1.61%

4% 0.015%

A single client Multiple clients Voice priority



Project54 – CATLabUniversity of New Hampshire

APCO Project 25 Wireless Data Services for Smaller Public Safety Agencies

Technology

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