Browse Prior Art Database

SELECTIVE VOICE/DATA CHANNEL ACCESS VIA ENHANCED CHANNEL STATUS

IP.com Disclosure Number: IPCOM000007479D
Original Publication Date: 1995-Jul-01
Included in the Prior Art Database: 2002-Mar-29
Document File: 1 page(s) / 73K

Publishing Venue

Motorola

Related People

Stan Knapczyk: AUTHOR [+2]

Abstract

Integrated voice/data systems ohen require both voice and data traffic to be sent on the same chan- nel. The goal in such a system is to allow the voice and data users to co-exist with the minimum amount of interference. The goal of such an integrated sys- tem is to provide the data users with a high data throughput across the channel while providing the voice users the ability to transmit on demand with- out long delays.

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MmR0l.A Technical Developments

SELECTIVE VOICE/DATA CHANNEL ACCESS VIA ENHANCED CHANNEL STATUS

by Stan Knapczyk and George Popovich

BACKGROUND

  Integrated voice/data systems ohen require both voice and data traffic to be sent on the same chan- nel. The goal in such a system is to allow the voice and data users to co-exist with the minimum amount of interference. The goal of such an integrated sys- tem is to provide the data users with a high data throughput across the channel while providing the voice users the ability to transmit on demand with- out long delays.

regardless of whether that BUSY status is due to data traffic on the channel or voice traffic.

  This is a problem because transmit on demand is something users of voice only systems are accus- tomed to. In voice-only systems, the user performs "manual" channel access by monitoring the radio speaker prior to transmission and deciding whether it is appropriate for him to transmit. If the user decides to transmit in spite ofvoice activity, the radio should not interfere with this decision,

PRIOR ART

INVENTION

  The current APCO CA1 operational description documents do not hilly optimize the S-DSMA chan- nel access algorithm in that they only specify that data traffic be subject to the channel access rules. In order to optimize data throughput, both the data and voice subscriber traffic should be subject to S-DSMA channel access rules as described in the APCO CA1 documentation. Otherwise, inbound voice traffic will collide with inbound data traffic since the user, who initiates the voice traffi...