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EMERGENCY ALARM ACK CONTROL ALGORITHM FOR DISTRIBUTED MULTI-ZONE ENVIRONMENT

IP.com Disclosure Number: IPCOM000007770D
Original Publication Date: 1996-Aug-01
Included in the Prior Art Database: 2002-Apr-22
Document File: 2 page(s) / 95K

Publishing Venue

Motorola

Related People

Steppen Yi: AUTHOR [+2]

Abstract

Emergency alarms are sent by subscriber units to indicate some type of emergency condition to the dispatcher in charge of the subscriber's group association.

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M-ROLA Technical Developments

8

EMERGENCY ALARM ACK CONTROL ALGORITHM FOR DISTRIBUTED MULTI-ZONE ENVIRONMENT

by Steppen Yi and Mark Mayernick

in turn causes a heavy burden of traffic on the out- bound control channel at the site which the requesting individual subscriber is affiliated.

INTRODUCTION

  Emergency alarms are sent by subscriber units to indicate some type of emergency condition to the dispatcher in charge of the subscriber's group association.

SOLUTION

BACKGROUND

  In SmartZone systems, single zone systems, the emergency alarm is received and forwarded to the radio dispatch management application(s) which in turn sends an emergency alarm ACK to the requesting subscriber unit. The single radio dispatch manager controls and manages the emergency alarm ACK that is sent to the subscriber unit so that only one response is sent back to the individual requesting subscriber.

  OmniLink, distributed multi-zone systems, pres- ents another level of complexity. The radio dispatch manager is no longer centralized to one zone. There exists multiple radio dispatch managers, one per zone, which are capable of sending an emergency alarm ACK in response to an emergency alarm requesting horn an individual. Furthermore, radio dispatch man- agement does not coordinate the ACKnowledgment of emergency alarms between other radio dispatch managers. (See Figure 1 for a graphical representa- tion ofthe distributed system.)

  This presents a problem because potentially the radio dispatch manager at each zone can receive a specific emergency alarm request and will response to the request with an emergency alarm ACK. This

  A method was devised to limit the number emer- gency alarm ACKs sent to the requesting subscr...