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BATTERY SAVER ALGORITHM FOR SIMULTANEOUS PRIORITY CALL MONITORING WITH PREEMPTION CAPABILITY

IP.com Disclosure Number: IPCOM000008731D
Original Publication Date: 1998-Jun-01
Included in the Prior Art Database: 2002-Jul-08
Document File: 1 page(s) / 53K

Publishing Venue

Motorola

Related People

Mark Mayernick: AUTHOR

Abstract

During emergency (high priority) group calls, radios un-mute on an assigned voice channel even- though no voice message may be present, Radios can not receive other calls while in this state and waste battery talk time amplifying static audio noise. This situation could exist for several hours which the radio can not participate in individual call activity and precious battery talk time is drained. Moreover, during this time, the radio can not partic- ipate in any other call activity.

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MOTOROLA Technical Developments

BATTERY SAVER ALGORITHM FOR SIMULTANEOUS PRIORITY CALL MONITORING WITH PREEMPTION CAPABILITY

by Mark Mayernick

BACKGROUND

  During emergency (high priority) group calls, radios un-mute on an assigned voice channel even- though no voice message may be present, Radios can not receive other calls while in this state and waste battery talk time amplifying static audio noise. This situation could exist for several hours which the radio can not participate in individual call activity and precious battery talk time is drained. Moreover, during this time, the radio can not partic- ipate in any other call activity.

SOLUTION

  A solution to this problem is to allow radios involved in high priority calls to return to a control channel. Furthermore, command the radio associated with the high priority call which is involved in another call to return to the high priority call when true voice activity is present. This can be done

using sub-audio information on the voice channel.

  This new algorithm allows two things. First, it saves battery talk time by not having the radio amplifier continuously on when no voice activity is being transmitted. The radio speaker amplifier is turned off when the radio is not on the voice channel. Second. it allows the individual to participate in other calls while still monitoring a high priority call. This second benefit is realized because the radio is able to monitor call information off the control channel. Furtherm...