Method and apparatus for providing a dispatch call

• US 20040203793A1
• Filed: 04/15/2002
• Published: 10/14/2004
• Est. Priority Date: 04/15/2002
• Status: Active Grant

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Dorenbosch, Jheroen P.
• Granted Patent: US 6,895,254 B2
• Time in Patent Office: Days
• US Class Current: 455/445
• CPC Class Codes: H04W 72/30 Resource management for broadcast services
• CPC Class Codes: H04W 76/10 Connection setup

Abstract

In addition to a hang timer (405), a second timer (403) (session timer) is introduced. A base station (101, 102) monitors a dispatch call, and if there exists no activity for a period of time greater than the hang-timer threshold, the base station (101, 102) will drop the over-the-air channels broadcasting the call to the remote units (113-118). All active participants to the call will be maintained until the session timer expires. Once the session timer expires, the talk-group participants will be reset to their original members.

Claims

1. An apparatus for providing a dispatch call in a communication system, the apparatus comprising:

a controller coupled to a hang timer and to a session timer;

wherein the hang timer causes a channel to be dropped after a first threshold;

wherein the session timer causes participants to the dispatch call to be reset to an original configuration after a second threshold;

the first threshold is substantially equal to 4 seconds; and

the second threshold is substantially equal to 40 seconds.

2-8. -8 Cancelled

9. A method for providing a dispatch call within a communication system, the method comprising the steps of:

providing the dispatch call to a first plurality of remote units;

receiving an option message, wherein the option message comprises instructions to exclude or include a remote unit in the dispatch call;

providing the dispatch call to a second plurality of remote units in response to the option message;

determining that a hang timer has expired;

dropping all over-the-air channels in response to the hang timer exceeding a first threshold of substantially 4 seconds;

receiving a request to provide the dispatch call;

determining if a session timer has exceeded a second threshold of substantially 40 seconds; and

providing the dispatch call to the first plurality of remote units if the session timer has expired, otherwise providing the dispatch call to the second plurality of remote units.

10. The method of claim 9 wherein the step of providing the dispatch call to the first plurality of remote units comprises the step of providing the dispatch call to the first plurality of remote units, wherein the call is provided in an iDEN communication system.

11. The method of claim 9 wherein the step of providing the dispatch call to the first plurality of remote units comprises the step of providing the dispatch call to the first plurality of remote units, wherein the call is provided in a CDMA communication system.