SYSTEMS AND METHODS FOR FACILITATING PUSH-TO-TALK (PTT) COMMUNICATIONS USING SIP-BASED MESSAGING

• US 20130115996A1
• Filed: 12/21/2012
• Published: 05/09/2013
• Est. Priority Date: 02/25/2009
• Status: Abandoned Application

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: SHATSKY, Alexander
• Application Number:
  US13/725,031
• Publication Number:
  US 20130115996A1
• Time in Patent Office: Days
• US Class Current: 455/518
• CPC Class Codes: H04L 65/4061 Push-to services, e.g. push-to-talk or push-to-video
• CPC Class Codes: H04M 2207/18 wireless networks
• CPC Class Codes: H04M 3/4228 in networks
• CPC Class Codes: H04M 7/121 Details of network access arrangements or protocols
• CPC Class Codes: H04W 4/10 Push-to-Talk [PTT] or Push-On-Call services
• CPC Class Codes: H04W 76/12 Setup of transport tunnels
• CPC Class Codes: H04W 76/45 for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services

Abstract

A method of facilitating push-to-talk (PTT) communications between a server device and a client device using SIP-based messaging, the server device being in communication with a media server. The method includes receiving in the server device from the client device a SUBSCRIBE message for subscription to a push-to-talk group, the SUBSCRIBE message including media information of the client device, storing in the server device the media information of the client device, and sending from the server device to the client device a NOTIFY message, the NOTIFY message including media information of the media server for storage by the client device.

Claims

1. A method of facilitating push-to-talk (PTT) communications between a server device and a client device using SIP-based messaging, the server device being in communication with a media server, the method comprising:

sending to the server device from the client device a SUBSCRIBE message for subscription to a push-to-talk group, the SUBSCRIBE message including media information of the client device for storage of the media information in the server device; and

establishing a PTT media session between the media server and the client device based on the stored media information of the client device.

2. The method of claim 1, further comprising:

receiving in the client device from the server device a NOTIFY message, the NOTIFY message including media information of the media server; and

storing the media information of the media server in the client device.

3. The method of claim 2, further comprising:

sending to the server device from the client device a second SUBSCRIBE message for initiating the PTT media session, the second SUBSCRIBE message excluding media information.

4. The method of claim 2, further comprising:

receiving in the client device from the server device a second NOTIFY message for initiation of the PTT media session, the second NOTIFY message excluding media information.

5. The method of claim 2, wherein the media information of the client device or the server device includes port information.

6. The method of claim 2, wherein the SUBSCRIBE or NOTIFY messages include an event package relating to push-to-talk.

7. The method of claim 6, wherein the event package includes state information of the push-to-talk group.

8. The method of claim 7, wherein the state information includes an active state when implementing a PTT media session and an idle state otherwise.

9. The method of claim 2, wherein the SUBSCRIBE or NOTIFY message includes expiry information of the push-to-talk group subscription.

10. The method of claim 1, wherein the client device comprises part of an enterprise system.

11. A method of facilitating push-to-talk (PTT) communications between a server device and a client device using SIP-based messaging, the server device being in communication with a media server, the method comprising:

sending to the server device from the client device a SUBSCRIBE message for subscription to a push-to-talk group;

receiving in the client device from the server device a NOTIFY message, the NOTIFY message including media information of the media server;

storing the media information of the media server in the client device; and

establishing a PTT media session between the media server and the client device using the stored media information.

12. The method of claim 11 wherein the SUBSCRIBE message includes media information of the client device for storage in the server device.

13. The method of claim 12, further comprising:

sending to the server device from the client device a second SUBSCRIBE message for initiating the PTT media session, the second SUBSCRIBE message excluding media information.

14. The method of claim 12, wherein the media information of the client device or the server device includes port information.

15. The method of claim 11, wherein the SUBSCRIBE or NOTIFY messages include an event package relating to push-to-talk.

16. The method of claim 15, wherein the event package includes state information of the push-to-talk group.

17. The method of claim 16, wherein the state information includes an active state when implementing a PTT media session and an idle state otherwise.

18. A client device for facilitating push-to-talk (PTT) communications using SIP-based messaging with a server device, the server device being in communication with a media server, the client device comprising:

a memory;

a controller for accessing the memory;

a communications module for communicating with the server device; and

the controller being configured to;

send to the server device a SUBSCRIBE message for subscription to a push-to-talk group, the SUBSCRIBE message including media information of the client device,

receive from the server device a NOTIFY message, the NOTIFY message including media information of the media server,

store the media information of the media server in the memory, and

establish a PTT media session between the media server and the client device using the stored media information of the media server.

19. A client device for facilitating push-to-talk (PTT) communications using SIP-based messaging with a server device, the server device being in communication with a media server, the client device comprising:

a memory;

a controller for accessing the memory;

a communications module for communicating with the server device; and

the controller being configured to;

send to the server device a SUBSCRIBE message for subscription to a push-to-talk group, the SUBSCRIBE message including media information of the client device for storage of the media information in the server device; and

establish a PTT media session between the media server and the client device based on the stored media information of the client device.