Method and system for group call service

• US 6,963,543 B2
• Filed: 06/29/2001
• Issued: 11/08/2005
• Est. Priority Date: 06/29/2001
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Grilli, Francesco, Diep, David
• Primary Examiner(s): Lee, Andy
• Application Number:
  US09/895,667
• Publication Number:
  US 20030048764A1
• Time in Patent Office: 1,593 Days
• Field of Search: 370260-263, 370/318, 370/329, 370/335, 370/342, 455517-519
• US Class Current: 370/261
• CPC Class Codes: H04W 4/10 Push-to-Talk [PTT] or Push-On-Call services
• CPC Class Codes: H04W 72/30 Resource management for broadcast services
• CPC Class Codes: H04W 76/45 for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services

Abstract

A method and system for group call services in a CDMA radio access network over a GSM-MAP or ANSI-41 core network are presented. The method and system provide for call setup, call notification, and call termination in the air interface of the CDMA radio access network. The necessary modification to the traffic and signaling channels for the CDMA radio network as well as new call flow messages are provided.

Claims

1. A method for sending information to a number of members of a group in a communication network comprising a core network and a CDMA radio access network, the method comprising:

broadcasting the information to the number of members of the group for a predetermined time period; and

repeating the broadcasting if at least one of the members of the group has responded to the information before the predetermined period of time expires, wherein the predetermined time period is replaced with a shorter predetermined time period if a predetermined number of members of the group have responded to the information before the predetermined period of time expires.

2. The method of claim 1 wherein the core network is based on GSM technology.

3. The method of claim 1 wherein the core network is based on ANSI-41 technology.

4. An apparatus for sending information to a number of members of a group in a communication network comprising a core network and a CDMA radio access network, the apparatus comprising:

means for broadcasting the information to the number of members of the group for a predetermined time period; and

means for repeating the broadcasting if at least one of the members of the group has responded to the information before the predetermined period of time expires, wherein the predetermined time period is replaced with a shorter predetermined time period if a predetermined number of members of the group have responded to the information before the predetermined period of time expires.

5. The apparatus of claim 4 wherein the core network is based on GSM technology.

6. The apparatus of claim 4 wherein the core network is based on ANSI-41 technology.

7. An apparatus for sending information to a number of members of a group in a communication network comprising a core network and a CDMA radio access network, the apparatus comprising:

a transmitter adapted to broadcast the information to the number of members of the group for a predetermined time period; and

a processor adapted to repeat the broadcasting if at least one of the members of the group has responded to the information before the predetermined period of time expires, wherein the predetermined time period is replaced with a shorter predetermined time period if a predetermined number of members of the group have responded to the information before the predetermined period of time expires.

8. The apparatus of claim 7 wherein the core network is based on GSM technology.

9. The apparatus of claim 7 wherein the core network is based on ANSI-41 technology.