Tree-based broadcasting service over push-to-talk mobile IP network

• US 20070208807A1
• Filed: 03/06/2006
• Published: 09/06/2007
• Est. Priority Date: 03/06/2006
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Infineon Technologies AG
• Inventors: Vishal, Gupta, Jagannathan, Sankarnarayan
• Granted Patent: US 9,225,757 B2
• Time in Patent Office: Days
• US Class Current: 709/204
• CPC Class Codes: H04L 65/1016 IP multimedia subsystem [IMS]
• CPC Class Codes: H04L 65/403 Arrangements for multi-party communication, e.g. for conferences data switching systems for conference H04L12/18; arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities H04M3/56; television conferencing systems H04N7/15
• CPC Class Codes: H04L 65/4061 Push-to services, e.g. push-to-talk or push-to-video
• CPC Class Codes: H04M 3/56 Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities video conference systems H04N7/15
• CPC Class Codes: H04W 4/08 User group management
• CPC Class Codes: H04W 4/10 Push-to-Talk [PTT] or Push-On-Call services
• CPC Class Codes: H04W 4/12 Messaging; Mailboxes; Announcements
• CPC Class Codes: H04W 4/16 Communication-related supplementary services, e.g. call-transfer or call-hold

Abstract

A method for generating a plurality of messages for inviting communication devices to a communication conference. The method includes establishing a first communication conference with a plurality of first communication devices, receiving a plurality of communication device identifiers from a communication device participating in the first communication conference, which communication device identifiers identify communication devices to be invited to at least a second communication conference, determining communication devices from the plurality of the communication devices, which are already involved in the first communication conference, and generating messages for inviting communication devices to the second communication conference only for those communication devices which are not involved in another the first communication conference.

Claims

1. A method for generating a plurality of messages for inviting communication devices to a communication conference, comprising:

establishing a first communication conference with a plurality of first communication devices,

receiving a plurality of communication device identifiers from a communication device participating in the first communication conference, which communication device identifiers identify communication devices to be invited to at least a second communication conference,

determining communication devices from the plurality of the communication devices, which are already involved in the first communication conference, and

generating messages for inviting communication devices to the second communication conference only for those communication devices which are not involved in the first communication conference.

3. The method as claimed in claim 1, wherein the second communication conference is a sub-communication conference of the first communication conference, in which all the participants of the first communication conference are also participants of the second communication conference.

11. The method as claimed in claim 1, further comprising providing the plurality of communication device identifiers, wherein the plurality of communication device identifiers is provided by a communication device participating in an already established communication conference.

12. The method as claimed in claim 11, wherein the plurality of communication device identifiers is provided by a communication device participating in the first communication conference.

2. A method for generating a plurality of messages for inviting communication devices to a communication conference, comprising:

receiving a plurality of communication device identifiers, which identify communication devices to be invited to a second communication conference,

determining communication devices from the plurality of the communication devices, which are already involved in a first communication conference, and

generating messages for inviting communication devices to the second communication conference only for those communication devices which are not involved in the first communication conference.

4. The method as claimed in claim 2, wherein the first communication conference is a sub-communication conference of the second communication conference, in which all the participants of the second communication conference are also participants of the first communication conference.

5. The method as claimed in claim 2, wherein the plurality of received communication device identifiers are provided by via a conference control protocol.

6. The method as claimed in claim 5, wherein the plurality of received communication device identifiers are provided via the Session Initiation Protocol.

7. The method as claimed in claim 6, wherein the plurality of received communication device identifiers are provided via at least one Session Initiation Protocol INVITE message.

8. The method as claimed in claim 2, wherein the plurality of communication device identifiers comprise at least one individual communication device identifier and at least one group of communication device identifiers.

9. The method as claimed in claim 2, wherein the communication conferences comprise push-to-talk communication conferences.

10. The method as claimed in claim 2, wherein the communication conferences comprise mobile radio push-to-talk communication conferences.

13. The method as claimed in claim 2, wherein the method is executed by a communication conference server.

14. A method for generating a communication conference tree used for inviting communication devices to a communication conference, the method comprising:

initializing the communication conference tree with a root node communication device identifier that identifies a communication device that participates in a first communication conference,

providing a plurality of communication device identifiers of communication devices which are to be invited to at least one second communication conference,

removing each of the provided plurality of communication device identifiers which is already present in the communication conference tree, and

adding each of the non-removed of communication device identifiers to a communication conference tree next level buffer.

15. The method as claimed in claim 14, further comprising:

removing each of the communication device identifiers stored in the communication conference tree next level buffer which is already present in the communication conference tree, and

adding each of the non-removed of communication device identifiers to the communication conference tree next level buffer.

16. The method as claimed in claim 14, wherein the communication conference tree is generated as a non-cyclic communication conference tree.

17. The method as claimed in claim 14, wherein the method is executed by a communication conference server.

18. A device for generating a plurality of messages for inviting communication devices to a communication conference, comprising:

a communication conference establishing unit establishing a first communication conference with a plurality of first communication devices,

a receiver receiving a plurality of communication device identifiers from a communication device participating in the first communication conference, which communication device identifiers identify communication devices to be invited to at least a second communication conference,

a determination unit determining communication devices from the plurality of the communication devices, which are already involved in the first communication conference, and

a message generating unit generating messages for inviting communication devices to the second communication conference only for those communication devices which are not involved in the first communication conference.

19. A device for generating a plurality of messages for inviting communication devices to a communication conference, comprising:

means for establishing a first communication conference with a plurality of first communication devices,

means for receiving a plurality of communication device identifiers from a communication device participating in the first communication conference, which communication device identifiers identify communication devices to be invited to at least a second communication conference,

means for determining communication devices from the plurality of the communication devices, which are already involved in the first communication conference, and

means for generating messages for inviting communication devices to the second communication conference only for those communication devices which are not involved in the first communication conference.

20. A device for generating a plurality of messages for inviting communication devices to a communication conference, comprising:

a receiver receiving a plurality of communication device identifiers, which identify communication devices to be invited to a second communication conference,

a determination unit determining communication devices from the plurality of the communication devices, which are already involved in a first communication conference, and

a message generating unit generating messages for inviting communication devices to the second communication conference only for those communication devices which are not involved in the first communication conference.

21. A device for generating a plurality of messages for inviting communication devices to a communication conference, comprising:

means for receiving a plurality of communication device identifiers, which identify communication devices to be invited to a second communication conference,

means for determining communication devices from the plurality of the communication devices, which are already involved in a first communication conference, and

means for generating messages for inviting communication devices to the second communication conference only for those communication devices which are not involved in the first communication conference.