Method for dynamically assigning priority to a call

• US 6,067,457 A
• Filed: 04/30/1996
• Issued: 05/23/2000
• Est. Priority Date: 04/30/1996
• Status: Expired due to Term

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Drozt, Peter M., Lubin, Glenn K., Erickson, Paul M.
• Primary Examiner(s): Hunter, Daniel S.
• Assistant Examiner(s): WYCHE, MYRON
• Application Number:
  US08/640,197
• Time in Patent Office: 1,484 Days
• Field of Search: 455/512, 455/509, 455/516, 455/519, 455/521, 455/524, 455/527, 455/450, 455/452, 455/455
• US Class Current: 455/512
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services

Abstract

A priority scheme for a system that supports dispatch and telephone services whereby more important calls, of the type spanning across the same or multiple cells, are dynamically assigned higher positions in the queue for the next voice channel to become available. Less important calls are readily identified and can have their voice channel taken away, i.e., dropped, to provide a channel for an emergency call. The priority scheme also makes it possible to for the priority of call in progress to dynamically change, e.g., increasing priority over time so that its voice channel can'"'"'t be taken away by a higher priority call, or decreasing priority of call as a function of time in progress.

Claims

1. In a communication system, a method for dynamically assigning priority to incoming service requests competing for access to a next available resource, comprising the steps of:

queuing a first service request by a first subscriber in a queue;

queuing a second service request by a second subscriber in the queue, wherein queuing the first and second service request produces a queue order of the first and second requests in the queue; and

dynamically changing the queue order of the first and second requests in the queue as a function of predefined criteria that determine which service request is most likely to benefit by obtaining access to the next available resource.

2. In a communication system, a method for dynamically changing the priority of a call already in progress, comprising the steps of:

assigning a priority level to an incoming service request;

establishing a connection to an available resource for the incoming service request when the incoming service request is highest in priority in relation to any pending service requests; and

changing, after the step of establishing, the priority level of the service request for which a connection has been established as a function of predefined events.

3. The method of claim 2, wherein said step of changing the priority involves changing the priority as a function of the time lapsed since the connection was initially established.

4. The method of claim 3, wherein said step of changing the priority includes decreasing the priority as a function of time lapsed since the connection was initially established.

5. The method of claim 3, wherein said step of changing the priority includes increasing the priority as a function of time lapsed since the connection was initially established.

6. In a communication system, a method for prematurely terminating one of plural currently active service calls processed by an access control gateway (ACG), wherein each of the plural currently active service calls is associated with a priority level, the method comprising the steps of:

receiving, by the ACG, a service request from a subscriber requiring immediate access to a communication resource;

identifying, by the ACG, a need for immediate access;

changing the priority level of at least one of the plural currently active service calls;

determining, by the ACG, when a communication resource is not available, which of the currently active service calls is least important; and

terminating, by the ACG, the least important currently active service call.

7. In a communication system including a plurality of access control gateways (ACGs), each supporting at least one cell and cooperatively coupled to a dispatch application processor (DAP), a method for assigning priority to a call involving subscribers present on multiple cells, comprising the steps of:

queuing, by an ACG, a first service request by a first subscriber in a first cell for access to a next available resource;

queuing, by the ACG, a second service request by a second subscriber in the first cell for access to the same next available resource, wherein queuing the first service request and the second service request produces a queue order of the first and second requests for access to a next available resource; and

changing the queue order of the first and second requests on the basis of events occurring in another cell, wherein the first and second service requests remain queued for access to the same next available resource.

8. In a communication system including a plurality of access control gateways (ACGs), each supporting at least one cell and cooperatively coupled to a dispatch application processor (DAP), a method for prematurely terminating one of plural currently active service calls processed by an ACG, wherein each of the plural currently active service calls is associated with a priority level, the method comprising the steps of:

receiving, by the ACG, a service request from a subscriber requiring immediate access to a communication resource;

identifying, by the ACG, a need for immediate access;

changing the priority level of at least one of the plural currently active service calls;

determining, by the ACG, when a communication resource is not available, which of the currently active service calls is least important; and

terminating, by the ACG, the least important currently active service call.