Browse Prior Art Database

MOTOROLA AUTOMATIC CHANNEL ALLOCATION SITE BY SITE IN A WIDE AREA TRUNKING CONFIGURATION

IP.com Disclosure Number: IPCOM000007402D
Original Publication Date: 1995-Mar-01
Included in the Prior Art Database: 2002-Mar-22
Document File: 3 page(s) / 171K

Publishing Venue

Motorola

Related People

Eddie Fuerst: AUTHOR

Abstract

In today's two-way RF environment of having a limited number of frequency (channel) resources, the capability of using those channels in the most efficient manner becomes a critical issue for the Landmobile industry as a whole. Being able to turn channels on and off based on current site loading becomes the ideal approach when trying to maxi- mize these limited channel resources in a wide area network.

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M-LA Technical Developments Volume 24 March 1995

MOTOROLA AUTOMATIC CHANNEL ALLOCATION SITE BY SITE IN A WIDE AREA TRUNKING CONFIGURATION

by Eddie Fuerst

PROBLEM

  In today's two-way RF environment of having a limited number of frequency (channel) resources, the capability of using those channels in the most efficient manner becomes a critical issue for the Landmobile industry as a whole. Being able to turn channels on and off based on current site loading becomes the ideal approach when trying to maxi- mize these limited channel resources in a wide area network.

a competitive environment. Wide area roaming has become commonplace to these markets.

  The key point is that urban type two way wide area radio users have limited frequency capability. Having the highest throughput technology on a site by site basis is a great benefit to these type users.

CURRENT TECHNOLOGY

  Today's SmartZone and Smartnet technologies enable a system supervisor to manually take a chan- nel at a site out of service and then activate the same Frequency at another site. One way to accom- plish this activation is for the system manager to activate a closure that gives power to the repeater, thereby the repeater tells its associated controller it is ready for operation and the controller updates this repeater in its active repeater list for this site. Cur- rent technology only allows this repeater deactivation at one site and reactivation (same frequency) at another site to occur manually, The system man- ager decides on the time of the switch and the sys- tem manager actually completes the channel switching process.

SOLUTION

  As earlier described, the manual operation of taking a repeater out of service at one site and reactivating at another site is current technology. The industry need is for this operation to take place automatically assuming certain loading assumptions are met. First, let's investigate how this automatic operation would be accomplished.

  The Interconnect Shared Service Algorithm is current technology that helps Smartnet and SmartZone telephone operations work effectively on Motorola trunking systems, Every titleen minutes the shared service algorithm updates interconnect call time out length and the maximum number of simultaneous interconnect calls allowed. This update

The problem is how do you turn channels onl offat

each site automatically and what scheme is used to

determine if X channels should be on at a site or X

+I- Y channels should be on at a site.

MARKET FOR A SOLUTION

  Any current or potential wide area trunking sys- tem utilizing individual sites or simulcast cells who is in a frequency exhausted area. Over the next few years in the 800 MHz and 900 MHz trunking band this descriptive market will include almost all urban areas. Currently, the two way Landmobile market- place is seeing frequency efficient technologies as the key to solving this growing problem.

This solution when matched with a frequency efJi-

cient technology greatly i...