Browse Prior Art Database

EFFICIENT CHANNEL USAGE FOR PRIVATE CONVERSATIONS IN TRUNKED COMMUNICATION SYSTEMS

IP.com Disclosure Number: IPCOM000008955D
Original Publication Date: 1999-Jan-01
Included in the Prior Art Database: 2002-Jul-26
Document File: 1 page(s) / 72K

Publishing Venue

Motorola

Related People

Amiram Gozes: AUTHOR

Abstract

Tnmked communication system allows for various types of communications: group calls, private calls, phone interconnect calls etc. For any call, the Tnmking Central Controller allocates an RF repeater as "voice channel", to receive the transmitting radio, and to retransmit it to the receiving party. In wide area systems, multiple repeaters may be used to conduct a single call. Efficient utilization of the repeaters is cru- cial for efficient system usage, to enable more calls to be carried on the system, shorter busy queues and busy wait times, etc.

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 MO7VROLA Technical Developments

EFFICIENT CHANNEL USAGE FOR PRIVATE CONVERSATIONS IN TRUNKED COMMUNICATION SYSTEMS

by Amiram Gozes

INTRODUCTION

  Tnmked communication system allows for various types of communications: group calls, private calls, phone interconnect calls etc. For any call, the Tnmking Central Controller allocates an RF repeater as "voice channel", to receive the transmitting radio, and to retransmit it to the receiving party. In wide area systems, multiple repeaters may be used to conduct a single call. Efficient utilization of the repeaters is cru- cial for efficient system usage, to enable more calls to be carried on the system, shorter busy queues and busy wait times, etc.

  This paper proposes a method to eliminate the time in which repeaters are allocated for a private conversa- tion after the call is ended.

PROBLEM TO BE SOLVED

  Normally, the tnmking system operates in "mes- sage mode", in which the voice channel is kept allocat- ed for the call a predetermined time (called "tnmking time") after the talker has ended its transmission, to let any receiver to respond by keying his radio. If no new transmission is received within this tnmking time, the call is terminated and the voice channel is released, to be used for other calls. This tnmking time is typically 2 to 4 seconds long.

  Currently, when two users are engaged in private conversation, when either of them wants to terminate the call (has nothing more to transmit or receive), he may exit the private conversation mode, without noti- fying the Tnmking Central Controller. This causes the Tnmking Central Controller to keep the voice channel allocated for the (now terminated) call addit...