Browse Prior Art Database

REGISTRATION CONTROL FOR A CONVENTIONAL DATA/VOICE SYSTEM

IP.com Disclosure Number: IPCOM000008140D
Original Publication Date: 1997-Jun-01
Included in the Prior Art Database: 2002-May-21
Document File: 1 page(s) / 71K

Publishing Venue

Motorola

Related People

George Dykas: AUTHOR

Abstract

Motorola has been developing communication systems to comply with the AF'CO Project 25 speci- fication. The first phase of this project was ASTRO release 1.7. This release introduced APCO's data on conventional RF digital voice communication sys- tems. This invention provides additional controls into this conventional system to minimize the inter- ference of data messages with voice messages.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 50% of the total text.

Page 1 of 1

M-LA Technical Developments

REGISTRATION CONTROL FOR A CONVENTIONAL DATA/VOICE SYSTEM

by George Dykas

ABSTRACT

  Motorola has been developing communication systems to comply with the AF'CO Project 25 speci- fication. The first phase of this project was ASTRO release 1.7. This release introduced APCO's data on conventional RF digital voice communication sys- tems. This invention provides additional controls into this conventional system to minimize the inter- ference of data messages with voice messages.

MOTIVATION

  Unlike trunked RF voice systems, conventional systems have no centralized control. Adding data to these conventional voice systems necessitated the introduction of a central controller for the handling of the data portion of the system.

  Additionally, in these voice communication systems, typically the subscriber units will only transmit when there is direct human intervention. Data transmissions may occur without any human intervention. An important part of the design goal for these systems is to prevent data transmissions from interfering with voice transmissions.

PROBLEM DESCRIPTION

  Slotted DSMA is used as a controlling mecha- nism to prevent data messages from interfering with voice transmissions.

  As part of the system design, traffic studies are conducted to ensure that a customer has enough RF resources for the anticipated data transactions that are desired by a customer during the time referred to as the "busy hour". These studies include inbound messages, outbound messages, acknowledgments from these mess...