Browse Prior Art Database

AUTOMATIC TRANSMISSION OF TRUNKED SITE AND CONTROL CHANNEL INFORMATION

IP.com Disclosure Number: IPCOM000007276D
Original Publication Date: 1994-Oct-01
Included in the Prior Art Database: 2002-Mar-11
Document File: 1 page(s) / 40K

Publishing Venue

Motorola

Related People

Richard Charles Lucas: AUTHOR

Abstract

A simple arrangement is proposed, to allow a dispatch to obtain automatic vehicle location on a multisite public trunked system, without intercon- nection to system infrastructure.

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MOTOROLA Technical Developments Volume 23 October 1994

AUTOMATIC TRANSMISSION OF TRUNKED SITE AND CONTROL CHANNEL INFORMATION

by Richard Charles Lucas

  A simple arrangement is proposed, to allow a dispatch to obtain automatic vehicle location on a multisite public trunked system, without intercon- nection to system infrastructure.

  Each time an MIT trunked radio acquires a new control channel, it triggers an automatic short data message transmission to its dispatcher. The data mes- sage contains information relating to the mobile iden- tity, and the site and control channel it has just acquired. The dispatcher system updates the site associated with each mobile. The dispatcher there- fore has a continuous log ofthe site location of each

mobile without requiring any interface to the cen- tral trunked system database.

  The key improvements over existing mechanisms for rough vehicle location on a trunked system is that no connection into the trunked system data base is required.

  The closest known system is Radiocom 2000 R.E. in France. In this system, a wireline interconnect to the nearest base site is required to obtain the rele- vant information.

0 Motorola. Inc. 1994 29

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