Browse Prior Art Database

HOME TALKGROUP RECOGNITION IN PATCHED AND ANNOUNCEMENT CALLS

IP.com Disclosure Number: IPCOM000007653D
Original Publication Date: 1996-May-01
Included in the Prior Art Database: 2002-Apr-11
Document File: 2 page(s) / 106K

Publishing Venue

Motorola

Related People

Gary Hunsberger: AUTHOR [+2]

Abstract

In current two-way radio systems each radio can be associated with one or many talkgroups. A subscriber unit can have many modes with one talkgroup assigned per mode. Each mode can be programmed to unmute to voice calls with matching talkgroups, any voice call or voice calls with the all talkgroup in Conventional systems, or the announce- ment talkgroup in Trunking systems. Voice calls can also be patched together by fixed network equip- ment to allow multiple talkgroups (Trunking), or multiple channels (Conventional), the ability to com- municate with each other. Radios on a trunking mode will always unmute to system-wide calls.

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McyroRoLA Technical Developments

HOME TALKGROUP RECOGNITION IN PATCHED AND ANNOUNCEMENT CALLS

by Gary Hunsberger and Steve Van Swol

BACKGROUND:

  In current two-way radio systems each radio can be associated with one or many talkgroups. A subscriber unit can have many modes with one talkgroup assigned per mode. Each mode can be programmed to unmute to voice calls with matching talkgroups, any voice call or voice calls with the all talkgroup in Conventional systems, or the announce- ment talkgroup in Trunking systems. Voice calls can also be patched together by fixed network equip- ment to allow multiple talkgroups (Trunking), or multiple channels (Conventional), the ability to com- municate with each other. Radios on a trunking mode will always unmute to system-wide calls.

  In system-wide calls, patched calls, announce- ment calls, or calls using the all talkgroup, there is no way for the subscriber users to know what "group" the transmitting radio is from without the user explicitly giving such information. In many instances, this may be important information for receiving units. The word "group" refers to what department, organ- ization, or agency the user of the radio belongs to. In patched calls, the radio user is unaware that a patched call is in progress.

  In current implementation, the information to determine the "group" of the transmitting radio is not available in system-wide, patched, announcement, or all talkgroup calls.

talkgroup of the radio will be the talkgroup associated with that mode. If the subscriber is set to a mode using a system-wide, announcement, or all talkgroup, a separate programmable talkgroup will be used as the home talkgroup.

  To provide the radio users with the knowledge ofthe home talkgroup ofthe transmitting radio, the following method will be used. Calls which are made with the system-wide, announcement, or al1 talkgroup will insert the home talkgroup in addition to the talkgroup and other datacurrently embedded in the voice frames of digital systems. In trunking patched calls, the patched talkgroup and the home talkgroup will be embedded in voice frames.

  Once the home talkgroup of the transmitting unit is known, the id will be shown on the display of receiving radios. Optionally, subscriber units may be programmed with a talkgroup alias list, In...