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Browse Prior Art Database

MULTI-CHANNEL COMPARATOR

IP.com Disclosure Number: IPCOM000008501D
Original Publication Date: 1997-Dec-01
Included in the Prior Art Database: 2002-Jun-18
Document File: 1 page(s) / 42K

Publishing Venue

Motorola

Related People

Matthew Laswell: AUTHOR [+2]

Abstract

Wide-area trunked two-way radio systems are currently configured in such a way that there is exactly one comparator per trunked channel. In systems which do not utilize the entire comparator's capacity, this results in wasted space and processing power.

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MOTOROLA Technical Developments

MULTI-CHANNEL COMPARATOR

by Matthew Laswell and Joel Klein

PROBLEM

  Wide-area trunked two-way radio systems are currently configured in such a way that there is exactly one comparator per trunked channel. In systems which do not utilize the entire comparator's capacity, this results in wasted space and processing power.

SOLUTION

  The comparator is attached to base stations operating on several different channels and internally partitioned into multiple virtual comparators. Each incoming signal is labelled with a context group

identification, keeping it distinct from other signals which the comparator may be routing simultaneously. Further, the comparator can determine which of its many inputs actually are copies of one another and perform best signal selection.

  This context grouping and best signal selection feeds into the comparator's routing, as it distributes its inputs to the land mobile radio infrastructure. An incoming message is routed within the comparator according to its input channel and context group ID. Thus, information which arrives on any particular input channel will be routed only to those infra- structure devices which service that channel and contention on any one channel can be managed.

R Motorola. Inc. ,997 153 December 1997

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