Session processing method and system

• US 20120274726A1
• Filed: 09/15/2010
• Published: 11/01/2012
• Est. Priority Date: 02/26/2010
• Status: Active Grant

• Current Assignee: Caltta Technologies Co. Ltd. (ZTE Corporation)
• Original Assignee: ZTE Corporation
• Inventors: Ling, Yong, Li, Jichao, Wang, Shaoxing
• Granted Patent: US 8,803,942 B2
• Time in Patent Office: Days
• US Class Current: 348/14.02
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• 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: H04N 7/148 Interfacing a video terminal to a particular transmission medium, e.g. ISDN
• CPC Class Codes: H04N 7/152 Multipoint control units therefor
• CPC Class Codes: H04W 4/10 Push-to-Talk [PTT] or Push-On-Call services
• CPC Class Codes: H04W 76/45 for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services

Abstract

The disclosure discloses a session processing method, which includes: a wireless Access Terminal (AT) supporting wireless video sends a cluster user participation command to a conference control centre, wherein the command includes an identifier of a cluster user which is invited to participate in a video conference; the conference control centre sends an invitation to a cluster terminal corresponding to the identifier of the cluster user through a Push To Talk Dispatch Server (PDS); the cluster terminal which receives the invitation returns an Acknowledgement (ACK) response to the PDS when the cluster terminal agrees to participate in the video conference and establishes a link with the PDS; and session interaction between the AT and the cluster terminal is performed based on the link. The disclosure also discloses a session processing system. By adopting the method and the system according to the disclosure, a session between an AT supporting wireless video and a common cluster terminal in a wireless video conference system is realized.

Claims

1. A session processing method, comprising:

sending a cluster user participation command to a conference control centre by a wireless Access Terminal (AT) supporting wireless video, wherein the command comprises an identifier of a cluster user which is invited to participate in a video conference;

sending, by the conference control centre, an invitation to a cluster terminal corresponding to the identifier of the cluster user through a Push To Talk Dispatch Server (PDS);

returning by the cluster terminal which receives the invitation an Acknowledgement (ACK) response to the PDS when the cluster terminal agrees to participate in the video conference, and establishing by the cluster terminal a link with the PDS; and

performing session interaction between the AT and the cluster terminal based on the link.

2. The session processing method according to claim 1, wherein when the AT and the cluster terminal perform session interaction based on the link, session processing in a direction from the AT to the cluster terminal is as follows:

the AT sends multimedia data to the conference control centre through a Radio Access Network (RAN), a Packet Core Network (PCN) and an Internet Protocol (IP) network in turn;

the conference control centre splits the multimedia data received into a video stream and an audio stream, and sends the audio stream to the PDS; and

the PDS forwards the audio stream received to the cluster terminal in the video conference.

3. The session processing method according to claim 1, wherein when the AT and the cluster terminal perform session interaction based on the link, session processing in a direction from the cluster terminal to the AT is as follows:

the cluster terminal sends audio data to the PDS;

when determining that the cluster terminal is in the video conference, the PDS sends the audio data received to the conference control centre and other cluster terminals in the video conference; and

the conference control centre encapsulates the audio data received into an audio stream in a multimedia format and sends the audio stream to the AT in the video conference.

4. The session processing method according to claim 1, wherein the sending a cluster user participation command to a conference control centre by an AT is:

encapsulating, by the AT, the identifier of the cluster user which is invited to participate in the video conference into video conference management information, and sending by the AT the cluster user participation command which includes the video conference management information to the conference control centre through the RAN, the PCN and the IP network in turn; and

obtaining, by the conference control centre, the identifier of the cluster user by analyzing the video conference management information, after the AT sends the cluster user participation command to the conference control centre.

5. The session processing method according to claim 1, further comprising:

when the cluster terminal which receives the invitation disagrees to participate in the video conference, returning, by the cluster terminal, a Negative Acknowledgement (NACK) response to the PDS;

forwarding by the PDS the NACK response to the conference control centre; and

sending by the conference control centre the NACK response to the AT through the IP network, the PCN and the PAN in turn.

11. The session processing method according to claim 2, wherein the sending a cluster user participation command to a conference control centre by an AT is:

encapsulating, by the AT, the identifier of the cluster user which is invited to participate in the video conference into video conference management information, and sending by the AT the cluster user participation command which includes the video conference management information to the conference control centre through the RAN, the PCN and the IP network in turn; and

obtaining, by the conference control centre, the identifier of the cluster user by analyzing the video conference management information, after the AT sends the cluster user participation command to the conference control centre.

12. The session processing method according to claim 3, wherein the sending a cluster user participation command to a conference control centre by an AT is:

encapsulating, by the AT, the identifier of the cluster user which is invited to participate in the video conference into video conference management information, and sending by the AT the cluster user participation command which includes the video conference management information to the conference control centre through the RAN, the PCN and the IP network in turn; and

obtaining, by the conference control centre, the identifier of the cluster user by analyzing the video conference management information, after the AT sends the cluster user participation command to the conference control centre.

13. The session processing method according to claim 2, further comprising:

when the cluster terminal which receives the invitation disagrees to participate in the video conference, returning, by the cluster terminal, a Negative Acknowledgement (NACK) response to the PDS;

forwarding by the PDS the NACK response to the conference control centre; and

sending by the conference control centre the NACK response to the AT through the IP network, the PCN and the PAN in turn.

14. The session processing method according to claim 3, further comprising:

when the cluster terminal which receives the invitation disagrees to participate in the video conference, returning, by the cluster terminal, a Negative Acknowledgement (NACK) response to the PDS;

forwarding by the PDS the NACK response to the conference control centre; and

sending by the conference control centre the NACK response to the AT through the IP network, the PCN and the PAN in turn.

6. A session processing system, comprising:

an Access Terminal (AT) supporting wireless video, a conference control centre, a Push To Talk Dispatch Server (PDS) and a cluster terminal, wherein

the AT is configured to send a cluster user participation command to the conference control centre, wherein the cluster user participation command comprises an identifier of a cluster user which is invited to participate in a video conference;

the conference control centre is configured to send an invitation to a cluster terminal corresponding to the identifier of the cluster user through the PDS;

the cluster terminal is configured to return an Acknowledgement (ACK) response to the PDS when the cluster terminal agrees to participate in the video conference, and establish a link with the PDS;

the PDS is configured to forward the invitation from the conference control centre to the cluster terminal, establish the link with the cluster terminal after receiving the ACK response from the cluster terminal, and return an ACK response to the conference control centre after establishing the link successfully; and

the AT and the cluster terminal are also configured to perform session interaction based on the link.

7. The session processing system according to claim 6, wherein the AT is further configured to send multimedia data generated by the AT itself in a session process to the conference control centre through a Radio Access Network (RAN), a Packet Core Network (PCN) and an IP network in turn;

correspondingly, the conference control centre is further configured to split the multimedia data received into a video stream and an audio stream, and send the audio stream to the PDS; and

the PDS is further configured to forward the audio stream received to the cluster terminal in the video conference.

8. The session processing system according to claim 6, wherein the cluster terminal is further configured to send audio data generated by the cluster terminal itself in the session process to the PDS;

correspondingly, the PDS is further configured to send the audio data received to the conference control centre and other cluster terminals in the video conference when determining that the cluster terminal is in the video conference; and

the conference control centre is further configured to encapsulate the audio data received into an audio stream in a multimedia format and send the audio stream to the AT in the video conference.

9. The session processing system according to claim 6, wherein the AT is further configured to encapsulate the identifier of the cluster user which is invited to participate in the video conference into video conference management information and send the cluster user participation command including the video conference management information to the conference control centre through the RAN, the PCN and the IP network in turn;

and

correspondingly, the conference control centre is further configured to analyze the video conference management information to obtain the identifier of the cluster user.

10. The session processing system according to claim 6, wherein the cluster terminal is further configured to return a Negative Acknowledgement (NACK) response to the PDS when receiving the invitation but disagreeing to participate in the video conference;

correspondingly, the PDS is further configured to forward the NACK response to the conference control centre; and

the conference control centre is further configured to send the NACK response to the AT through the IP network, the PCN and the PAN in turn.

15. The session processing system according to claim 7, wherein the AT is further configured to encapsulate the identifier of the cluster user which is invited to participate in the video conference into video conference management information and send the cluster user participation command including the video conference management information to the conference control centre through the RAN, the PCN and the IP network in turn;

and

correspondingly, the conference control centre is further configured to analyze the video conference management information to obtain the identifier of the cluster user.

16. The session processing system according to claim 8, wherein the AT is further configured to encapsulate the identifier of the cluster user which is invited to participate in the video conference into video conference management information and send the cluster user participation command including the video conference management information to the conference control centre through the RAN, the PCN and the IP network in turn;

and

correspondingly, the conference control centre is further configured to analyze the video conference management information to obtain the identifier of the cluster user.

17. The session processing system according to claim 7, wherein the cluster terminal is further configured to return a Negative Acknowledgement (NACK) response to the PDS when receiving the invitation but disagreeing to participate in the video conference;

correspondingly, the PDS is further configured to forward the NACK response to the conference control centre; and

the conference control centre is further configured to send the NACK response to the AT through the IP network, the PCN and the PAN in turn.

18. The session processing system according to claim 8, wherein the cluster terminal is further configured to return a Negative Acknowledgement (NACK) response to the PDS when receiving the invitation but disagreeing to participate in the video conference;

correspondingly, the PDS is further configured to forward the NACK response to the conference control centre; and

the conference control centre is further configured to send the NACK response to the AT through the IP network, the PCN and the PAN in turn.