Browse Prior Art Database

SYNCHRONIZE SHARED RESOURCES BETWEEN CO-OWNERS

IP.com Disclosure Number: IPCOM000008725D
Original Publication Date: 1998-Jun-01
Included in the Prior Art Database: 2002-Jul-05
Document File: 2 page(s) / 79K

Publishing Venue

Motorola

Related People

Michelle Desrosier Hofstee: AUTHOR [+3]

Abstract

In a system that uses distributed call processing, the call processing entities must coordinate the acquisition of all resources. Some resources are shared between call processing owners in the system. The co-owners may send multiple messages to communicate the availability and usage of the shared resource.

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MOTOROLA Technical Developments

SYNCHRONIZE SHARED RESOURCES BETWEEN CO-OWNERS

by Michelle Desrosier Hofstee, David Tran and Brian Poe

BACKGROUND

  In a system that uses distributed call processing, the call processing entities must coordinate the acquisition of all resources. Some resources are shared between call processing owners in the system. The co-owners may send multiple messages to communicate the availability and usage of the shared resource.

PROBLEM DEFINITION AND SOLUTION

  It is important for the co-owners of the shared resource to stay synchronized at all times. Synchronization problems may occur when

messages cross between the two co-owners. Each co-owner must notify the other co-owner when it intends to use the shared resource, when it is using the shared resource or when it is no longer using the shared resource.

  A limited number of shared resources may exist for a system. In order to reduce busies, a shared resource may be preempted from one call to be used by another call. Therefore, it is possible that a co-owner is using the resource for one call and intends to use the same shared resource for a different call. In this case the call that is using the resource will lose it as soon as the other co-owner agrees to let the second call use the shared resource.

coQwner 1

c-2

Fig. 1 Synchronize Co-owners of a SHARED resource

  It is possible for one co-owner to think a shared * Co-owner 1 decides to use the shared resource for resource is not being us...