METHOD FOR MULTI-TERMINAL SESSION, AND COMMUNICATION SYSTEM AND RELATED DEVICE THEREOF

• US 20100057853A1
• Filed: 11/10/2009
• Published: 03/04/2010
• Est. Priority Date: 08/06/2007
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Wang, Xiaobo, Xu, Guojun
• Granted Patent: US 8,676,888 B2
• Time in Patent Office: Days
• US Class Current: 709/204
• CPC Class Codes: H04L 2101/39 Globally routable user-agent uniform resource identifier [GRUU] for the session initiation protocol [SIP]
• CPC Class Codes: H04L 61/30 Managing network names, e.g. use of aliases or nicknames name-to-address mapping H04L61/45
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066

Abstract

A method for a multi-terminal session, and a communication system and related devices thereof are disclosed according to the present invention. Accordingly, the user experience is improved. The method of the present invention includes setting up a connection between each terminal of a multi-terminal user and a session transfer server; setting up a connection between the session transfer server and a peer user; conducting a session between each terminal of the multi-terminal user and the peer user via the session transfer server.

Claims

1. A method for a multi-terminal session, comprising:

setting up a connection between each terminal of a multi-terminal user and a session transfer server;

setting up a connection between the session transfer server and a peer user; and

conducting a session between each terminal of the multi-terminal user and the peer user via the session transfer server.

2. The method of claim 1, wherein,

setting up a connection between each terminal of a multi-terminal user and a session transfer server comprises:

receiving, by the session transfer server, a session request sent from the multi-terminal user;

feeding back a session acknowledgement, and enabling each terminal of the multi-terminal user to join the session;

setting up a transport channel between each terminal of the multi-terminal user and the session transfer server;

or

sending, by the session transfer server, a session request to each terminal of the multi-terminal user;

receiving session acknowledgement fed back by terminals of the multi-terminal user and enabling each terminal of the multi-terminal user to join the session;

setting up a transport channel between each terminal of the multi-terminal user and the session transfer server;

setting up a connection between the session transfer server and the peer user comprises;

receiving, by the session transfer server, a session request sent from the peer user;

feeding back a session acknowledgement, and enabling the peer user to join the session;

setting up a transport channel between the peer user and the session transfer server;

or

sending, by the session transfer server, a session request to the peer user;

receiving a session acknowledgement fed back from the peer user, and enabling the peer user to join the session;

setting up a transport channel between the peer user and the session transfer server.

3. The method of claim 2, wherein,

conducting a session between each terminal of the multi-terminal user and the peer user via the session transfer server comprises:

receiving, by the session transfer server, media messages sent from each terminal of the multi-terminal user via the transport channel;

sending the media messages to the peer user via the transport channel;

and/or

receiving, by the session transfer server, a media message sent from the peer user via the transport channel;

sending the media message to a terminal of the multi-terminal user via the transport channel according to media capability information of the media message from the peer user and media capability information of each terminal of the multi-terminal user.

4. The method of claim 1, further comprising:

receiving, by the session transfer server, a terminal join request from a first terminal of the multi-terminal user;

sending, by the session transfer server, an invitation request to a second terminal of the multi-terminal user via a session initiation protocol message according to the terminal join request;

receiving, by the session transfer server, an invitation acknowledgement from the second terminal of the multi-terminal user.

5. The method of claim 1, further comprising:

sending, by a first terminal of the multi-terminal user, a join request to a second terminal of the multi-terminal user;

sending, by the second terminal of the multi-terminal user, a terminal join request to the session transfer server; and

feeding back, by the session transfer server according to the terminal join request, a join acknowledgement to the second terminal of the multi-terminal user via a session initialization protocol message.

6. The method of claim 4, wherein,

the terminal join request contains media information of the second terminal of the multi-terminal user;

and the method further comprises;

adjusting, by the session transfer server, media capability of the session transfer server based on the media information of the second terminal of the multi-terminal user, after receiving the terminal join request;

negotiating, by the session transfer server, media capability with the peer user.

7. The method of claim 4, further comprising:

receiving, by the session transfer server, a media update request from the peer user;

determining, by the session transfer server, if current media capability of the session transfer server supports an updated media type;

searching in the terminals of the multi-terminal user for a terminal which supports the media type;

adding, by the session transfer server, the found terminal into the session via a session initialization protocol message;

updating, by the session transfer server, the media capability of the session transfer server according to the media type supported by the found terminal; and

sending, by the session transfer server, the media message to a terminal according to the media capability of each terminal of the multi-terminal user after the session transfer server receives the media message.

8. The method of claim 4, further comprising:

receiving, by the session transfer server, a terminal removal request from the first terminal of the multi-terminal user;

sending, by the session transfer server according to the terminal removal request, a session termination request to the second terminal of the multi-terminal user via a session initialization protocol message; and

receiving, by the session transfer server, a session termination acknowledgement from the second terminal of the multi-terminal user.

9. The method of claim 4, further comprising:

receiving, by the session transfer server, a terminal removal request from the first terminal of the multi-terminal user; and

feeding back, by the session transfer server according to the terminal removal request, a session removal acknowledgement to the first terminal of the multi-terminal user via a session initialization protocol message.

10. The method of claim 8, wherein, after the second terminal of the multi-terminal user leaves the session, the method comprises:

updating, by the session transfer server, media capability of the session transfer server according to the media information of the second terminal of the multi-terminal user; and

negotiating, by the transfer server, media capability between a session transfer server and the peer user.

11. The method of claim 1, further comprising:

sending, by a first terminal of the multi-terminal user, a terminal replacing request to the session transfer server;

sending, by the session transfer server according to the terminal replacing request, an invitation request to a second terminal of the multi-terminal user via a session initialization protocol message;

receiving, by the session transfer server, an invitation acknowledgement from the second terminal of the multi-terminal user;

sending a session termination request to the first terminal of the multi-terminal user; and

receiving, by the session transfer server, a session termination acknowledgement from the first terminal of the multi-terminal user.

12. The method of claim 1, further comprising:

receiving, by the session transfer server, an invitation request containing a replace field from a first terminal of the multi-terminal user;

feeding back, by the session transfer server according to the invitation request, an invitation acknowledgement to the first terminal of the multi-terminal user via a session initialization protocol message;

sending, by the session transfer server according to the invitation request, a session termination request to a second terminal of the multi-terminal user; and

receiving, by the session transfer server, a session termination acknowledgement from the second terminal of the multi-terminal user.

13. The method of claim 1, further comprising:

receiving, by the session transfer server, a session termination request from the peer user;

feeding back, by the session transfer server, a session termination acknowledgement to the peer user;

sending, by the session transfer server, a session termination request to each terminal of the multi-terminal user; and

receiving, by the session transfer server, a session termination acknowledgement fed back from each terminal of the multi-terminal user.

14. The method of claim 1, further comprising:

receiving, by the session transfer server, a session termination request from a first terminal of the multi-terminal user;

feeding back, by the session transfer server, a session termination acknowledgement to each terminal of the multi-terminal user;

sending, by the session transfer server, a session termination request to the peer user; and

receiving, by the session transfer server, a session termination acknowledgement fed back from the peer user.

15. The method of claim 1, wherein,

setting up a connection between each terminal of a multi-terminal user and a session transfer server comprises:

conducting, by the session transfer server, a session between the peer user and a first terminal of the multi-terminal user;

determining, by the session transfer server, whether session terminal information of the multi-terminal user has changed;

adding, if the information has changed, each terminal of the multi-terminal user to the session via a session initialization protocol message;

setting up, by the session transfer server, a transport channel between each terminal of the multi-terminal user and the session transfer server;

setting up a connection between the session transfer server and the peer user comprises;

adding, by the session transfer server, the peer user into the session via a session initialization protocol message; and

setting up, by the session transfer server, a transport channel between the peer user and the session transfer server;

determining whether session terminal information of the multi-terminal user has changed comprises;

determining whether the multi-terminal user has added a new terminal in the session;

determining that the session terminal information has changed if the multi-terminal user has added a new terminal in the session;

or

determining whether the multi-terminal user has switched from a first terminal to a second terminal;

determining that the session terminal information has changed if the multi-terminal user has switched from a first terminal to a second terminal.

16. A session transfer server, comprising:

a connection setup unit, configured to set up a session connection with each terminal of two users in communication via a Session Initialization Protocol message;

a channel setup unit, configured to set up a transport protocol channel with each terminal of the two users in communication; and

a session agent unit, configured to receive a media message from a peer user, send the media message to a corresponding terminal of the multi-terminal user, receive media message from each terminal of the multi-terminal user, and send the media message to the peer user.

17. The session transfer server of claim 16, wherein the session transfer server further comprises:

a media capability adjusting unit, configured to perform a media negotiation with each terminal of the multi-terminal user and adjust the media capability of the session transfer server according to the negotiation result;

18. The session transfer server of claim 16, wherein the session transfer server further comprises:

a session control unit, configured to receive a session control request sent from the peer user or from the multi-terminal user and perform a session control operation in response to the request, wherein the session control request comprises a terminal join request, a session termination request, or a session modification request.

19. The session transfer server of claim 17, wherein the session transfer server further comprises:

a session control unit, configured to receive a session control request sent from the peer user or from the multi-terminal user and perform a session control operation in response to the request, wherein the session control request comprises a terminal join request, a session termination request, or a session modification request.