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METHOD TO ORGANIZE SUPER GROUPS SUCH THAT RADIO SECURE/CLEAR OPERATION IS NOT INHIBITED

IP.com Disclosure Number: IPCOM000008736D
Original Publication Date: 1998-Jun-01
Included in the Prior Art Database: 2002-Jul-08
Document File: 2 page(s) / 85K

Publishing Venue

Motorola

Related People

Hans Christopher Sowa: AUTHOR [+2]

Abstract

The system is a trunked Land Mobile Radio system. To facilitate console patches, talkgroups (TG) are grouped into super groups (Xi). Some of the radios are equipped with secure and others are not secure equipped. The console has secure capability via a Digital Interface Unit or a Console Interface Unit.

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MOTOROLA Technicul Developments

METHOD TO ORGANIZE SUPER GROUPS SUCH THAT RADIO SECURE/CLEAR OPERATION IS NOT INHIBITED

by Hans Christopher Sowa and Daniel J. McDonald

SYSTEM BACKGROUND

  The system is a trunked Land Mobile Radio system. To facilitate console patches, talkgroups (TG) are grouped into super groups (Xi). Some of the radios are equipped with secure and others are not secure equipped. The console has secure capability via a Digital Interface Unit or a Console Interface Unit.

  When the patch is formed, a clear SG and a secure SG are formed. Clear only TGs and selec- table TGs selecting clear at the console are put into the clear SG. Secure only TGs and selectable TGs selecting secure at the console are put into the secure SG. Console audio to the clear SG is clear and console audio to the secure SG is secure.

THE PROBLEM

  Current trunking patch operation forces the radio to not be able to upgrade a call to secure or downgrade a call to clear. This can cause confusion with the radio operator who is normally allowed to upgrade and downgrade (after channel drop) on the TG and may not be aware of the patch. Secure transmits by radios on the clear SG are especially bad since radios that are not secure equipped may

be in that SG.

  Further, the secure or clear state that the radio will be forced to use is dictated by the secure or clear state that the console has selected for that TG. The secure clear state that the console has selected has no correlation with what secure clear state the radios are using. However, we stil...