Browse Prior Art Database

GROUP REGROUPING PTT REQUESTS BASED ON TMSS SETTING FOR SELECTABLE TALKGROUPS

IP.com Disclosure Number: IPCOM000008810D
Original Publication Date: 1998-Sep-01
Included in the Prior Art Database: 2002-Jul-16
Document File: 2 page(s) / 104K

Publishing Venue

Motorola

Related People

Gary Gutknecht: AUTHOR [+2]

Abstract

Group Regrouping sessions in trunked systems involve combining two or more talkgroups into super groups, allowing members of the different talkgroups to communicate with each other. This operation is generally transparent to the subscriber user; the main difference is the increased amount of voice activity brought about by having more users involved in dispatch calls.

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MOTOROLA Technical Developments

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GROUP REGROUPING PTT REQUESTS BASED ON TMSS SETTING FOR SELECTABLE TALKGROUPS

by Gary Gutknecht and Chris Kruegel

INTRODUCTION

strapping of a selectable talkgroup is dictated by the clear/secure selection at the console for that talk- group during the Group Regrouping session. If the console is selected to clear for the talkgroups, the subscriber is forced to transmit clear. Likewise, if the console is selected to secure for the talkgroup, the subscriber is forced to transmit secure.

  In both cases, subscriber users who belong to normally selectable talkgroups are now forced to transmit clear or secure (based on the console set- tings) without any indication as to why this is occur- ring. For Group Regrouping to be truly transparent, selectable talkgroups should retain their clear/secure selectability. From a system, perspective, it is desir- able to provide such selectability while allocating as few voice channel resources as possible.

  Group Regrouping sessions in trunked systems involve combining two or more talkgroups into super groups, allowing members of the different talkgroups to communicate with each other. This operation is generally transparent to the subscriber user; the main difference is the increased amount of voice activity brought about by having more users involved in dispatch calls.

  When a Group Regrouping session is formed in current Motorola trunked systems involving talk- groups with mixed clear/secure settings, two super groups are created, a clear super group and a secure super group. Clear only talkgroups are placed in the clear super group and secure only talkgroups arc placed in the secure super group. Clear/secure selec- table talkgroups are placed into a super group based on the console's clear/secure setting for that talk- group.

  For example, if the console is selected to clear for a selectable talkgroup, that talkgroup will be put into the clear super group. Likewise, if the console is selected to secure for a selectable talkgroup, that talkgroup will be put into the secure super group for the Group Regrouping session. Talkgroups in the clear super group are allowed to communicate only in clear and talkgroups in the secure super group arc allowed to communicate only in secure. An audio patch is made at the console to link the two super groups together.

THE SOLUTION

  The so...