System, method and apparatus for establishing interactive media session based on IP multimedia subsystem

• US 20110055405A1
• Filed: 10/29/2010
• Published: 03/03/2011
• Est. Priority Date: 02/18/2006
• Status: Active Grant

• Current Assignee: RPX Corporation
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Li, Jincheng, Wu, Xiangyang, Yan, Jun
• Granted Patent: US 8,150,975 B2
• Time in Patent Office: Days
• US Class Current: 709/227
• CPC Class Codes: H04L 65/1016 IP multimedia subsystem [IMS]
• CPC Class Codes: H04L 65/65 Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]

Abstract

A method and system for establishing an interactive media session based on IP Multimedia Subsystem, including: a terminal adapted to initiate an interactive media session request and receive a media session response; a serving-CSCF adapted to trigger the request to the application server according to a triggering rule and route the message; a proxy-CSCF adapted to forward the request and the response between the terminal and the serving-CSCF; an application server adapted to process the service request; a media control entity adapted to control resource allocation of the media carrier entity; and a media carrier entity adapted to allocate address ports for RTSP connection and RTP connection with the terminal. The present invention can be applied to a NGN network where the carrier and control are separated to improve the media delivery efficiency.

Claims

1. A method for establishing an interactive media session based on an IP Multimedia Subsystem, comprising:

receiving, by a media control entity, an interactive service request initiated by a terminal;

controlling, by the media control entity, a media carrier entity to negotiate an address port for a Real Time Stream Protocol (RTSP) connection and an address port for a Real-time Transport Protocol (RTP) connection to communicate with the terminal; and

establishing an RTSP connection for interactive control and an RTP connection for media stream delivery between the terminal and the media carrier entity.

2. The method of claim 1, wherein, the interactive service request carries the terminal'"'"'s information about an address port for RTSP connection and an address port for RTP connection;

and

the controlling, by the media control entity, a media carrier entity to negotiate an address port for RTSP connection and an address port for RTP connection to communicate with the terminal further comprises;

controlling, by the media control entity, the media carrier entity to interact, and acquiring address ports allocated by the media carrier entity for RTSP connection and RTP connection with the terminal; and

returning, by the media control entity, a service request response to the terminal, wherein the service request response carries the address ports for RTSP connection and RTP connection.

3. The method of claim 1, wherein, the interactive service request carries information about an address port for RTSP connection of the terminal;

and

the controlling, by the media control entity, a media carrier entity to negotiate an address port for RTSP connection and an address port for RTP connection to communicate with the terminal further comprises;

negotiating, by the media carrier entity, the address port for RTSP connection to interact with the terminal, before establishing the RTSP connection for the interactive control between the terminal and the media carrier entity; and

negotiating, by the media carrier entity, the address port for RTP connection to interact with the terminal, after establishing the RTSP connection for the interactive control and before establishing the RTP connection for media stream delivery between the terminal and the media carrier entity.

4. The method of claim 3, wherein the negotiating the address port for RTSP connection to interact with the terminal further comprises:

controlling, by the media control entity, the media carrier entity to interact, and acquiring the address port allocated by the media carrier entity for the RTSP connection with the terminal; and

returning, by the media control entity, a service request response to the terminal, the service request response carries information about the address port for RTSP connection.

5. The method of claim 3, wherein the negotiating the address port for RTP connection to interact with the terminal further comprises:

sending, by the terminal, a SETUP message to the media carrier entity over the RTSP connection, wherein the SETUP message carries information about an address port for RTP connection of the terminal for media stream delivery;

allocating, by the media carrier entity, a local address port for RTP connection and reporting the local address port to the media control entity, after receiving the SETUP message; and

returning, by the media carrier entity, a response to the SETUP message to the terminal, wherein the response carries information about the address port for RTP connection of the media carrier entity.

6. The method of claim 3, wherein the negotiating the address port for RTSP connection to interact with the terminal further comprises:

controlling, by the media control entity, the media carrier entity to interact, and acquiring the address port allocated by the media carrier entity for the RTSP connection with the terminal;

returning, by the media control entity, a service request response to the terminal, wherein the service request response carries information about the address port for RTSP connection, and routing information of the service request response includes the media control entity.

7. A method for establishing an interactive media session based on IP Multimedia Subsystem, comprising:

receiving, by an Multimedia Resource Function (MRF), an interactive service request initiating by a terminal;

negotiating, by the MRF, an address port for Real Time Stream Protocol (RTSP) connection and an address port for Real-time Transport Protocol (RTP) connection to interact with the terminal;

establishing an RTSP connection for interactive control based on the address port for RTSP connection between the terminal and a media control entity of the MRF; and

establishing an RTP connection for media stream delivery based on the address port for RTP connection between the terminal and a media carrier entity of the MRF.

8. The method of claim 7, wherein the method further comprises:

forwarding, by the media control entity, an RTSP message from the terminal to the media carrier entity through the RTSP connection between the media control entity and the media carrier entity, or converting the RTSP message from the terminal to an H.248 message or a SIP message, and then delivering the converted message to the media carrier entity.

9. The method of claim 7, wherein the method further comprises:

decapsulating by the media control entity, a SIP message from the terminal which encapsulates an RTSP message, and forwarding the decapsulated RTSP message to the media carrier entity over the RTSP connection between the media control entity and the media carrier entity, or converting the decapsulated RTSP message to an H.248 message or a SIP message and then delivering the converted message to the media carrier entity.

10. The method of claim 7, wherein, the interactive service request carries information about an address port for RTSP connection of the terminal;

and

the negotiating by the MRF an address port for RTSP connection and an address port for RTP connection to communicate with the terminal comprises;

negotiating, by the MRF, the address port for RTSP connection to communicate with the terminal, before establishing the RTSP connection for the interactive control between the terminal and the media control entity; and

negotiating, by the media carrier entity, under the control of the media control entity, the address port for RTP connection to communicate with the terminal after establishing the RTSP connection for the interactive control between the terminal and the media control entity and before establishing the RTP connection for media stream delivery between the terminal and a media carrier entity.

11. The method of claim 10, wherein the negotiating by the addresses ports for MRF the RTSP connection to communicate with the terminal further comprises:

controlling, by the media control entity, the media carrier entity to interact, and acquiring the address port allocated by the media carrier entity for the RTSP connection with the terminal;

allocating, by the media control entity, a local address port for RTSP connection; and

returning, by the media control entity, a service request response to the terminal, wherein the service request response carries information about the address port for RTSP connection of the media control entity.

12. The method of claim 11, wherein the negotiating by the media carrier entity the address port for RTP connection to communicate with the terminal under the control of the media control entity comprises:

delivering, by the terminal, a SETUP message to the media carrier entity over the RTSP connection, the SETUP message carries the terminal'"'"'s information about the address port for RTP connection;

forwarding, by the media control entity, the SETUP message to the media carrier entity when the media carrier entity is allowed to continue a service operation;

after receiving the SETUP message, allocating by the media carrier entity the address port for RTP connection under the control of the media control entity and returning the address port to the media control entity;

returning, by the media control entity, a response to the SETUP message to the terminal, the response carries information about the address port allocated by the media carrier entity for RTP connection.

13. The method of claim 10, wherein:

the negotiating by the MRF the address port for RTSP connection to communicate with the terminal comprises;

allocating, by the media control entity, the address port for RTSP connection with the terminal;

returning, by the media control entity, a service request response to the terminal, the service request response carries information about the address port for RTSP connection of the media control entity.

14. The method of claim 13, wherein the negotiating by the media carrier entity the address port for RTP connection to communicate with the terminal under the control of the media control entity comprises:

delivering, by the terminal, a SETUP message to the media control entity over the RTSP connection, wherein the SETUP message carries the address port for RTP connection of the terminal;

converting, by the media control entity, the SETUP message to an H.248 message or a SIP message and delivering the converted message to the media carrier entity when the media carrier entity is allowed to continue the service operation;

after receiving the H.248 message or the SIP message, allocating by the media carrier entity the address port for RTP connection under the control of the media control entity and returning the allocated address port to the media control entity; and

returning, by the media control entity, a response to the SETUP message to the terminal, wherein the response includes the address port for RTP connection allocated by the media carrier entity.

15. The method of claim 7, wherein:

the interactive service request carries information about an address port for RTSP connection of the terminal and an address port for RTP connection;

the negotiating by the MRF the address port for RTSP connection and the address port for RTP connection to communicate with the terminal comprises;

controlling, by the media control entity, the media carrier entity to interact, and acquiring the addresses ports allocated by the media carrier entity for RTSP connection and RTP connection with the terminal;

allocating, by the media control entity, a local address port for RTSP connection;

returning, by the media control entity, a service request response to the terminal, the service request response carries the address port for RTSP connection of the media control entity and the address port for RTP connection of the media carrier entity.

16. The method of claim 7, wherein the interactive service request carries information about an address port for RTSP connection and an address port for RTP connection of the terminal;

the negotiating by the MRF the address port for RTSP connection and the address port for RTP connection to communicate with the terminal comprises;

allocating, by the media control entity, the address port for RTSP connection with the terminal;

controlling, by the media control entity the media carrier entity to interact and acquiring the address port allocated by the media carrier entity for RTP connection with the terminal;

returning, by the media control entity, a service request response to the terminal, the service request response carries information about the address port for RTSP connection of the media control entity and the address port for RTP connection of the media carrier entity.

17. The method of claim 11, wherein a protocol used by the media control entity when controlling the media carrier entity to interact is the H.248 protocol or a combination of the eXtensible Markup Language (XML) and the SIP.

18. A method for establishing an interactive media session based on IP Multimedia Subsystem, comprising:

receiving, by a media control entity, an interactive service request initiated by a terminal via an application server;

negotiating, by the application server, an address port for Real Time Stream Protocol (RTSP) connection to communicate with the terminal and establishing an RTSP connection with the terminal for interactive control;

negotiating, under the control of the media control entity, by a media carrier entity, an address port for Real-time Transport Protocol (RTP) connection to communicate with the terminal;

establishing an RTP connection for media stream delivery between the terminal and the media carrier entity.

19. The method of claim 18, wherein, the application server converts control information contained in an RTSP message from the terminal to an H.248 message or a SIP message and then delivers the converted message to the media control entity;

or the application server establishes an RTSP connection with the media control entity to forward the RTSP message from the terminal to the media control entity.

20. A method for establishing an interactive media session based on IP Multimedia Subsystem, comprising:

receiving, by a media control entity, an interactive service request initiated by a terminal;

negotiating, under the control of the media control entity, by a media carrier entity, an address port for Real-time Transport Protocol (RTP) connection to communicate with the terminal;

establishing an RTP connection for media stream delivery between the terminal and the media carrier entity;

delivering a Session Initiation Protocol (SIP) message to an Application Server (AS) by the terminal, wherein the SIP message carries media interactive control information;

acquiring, by the AS from the SIP message, the media interactive control information and converting the media interactive control information to an Real Time Stream Protocol (RTSP) message; and

interacting, between the AS and a Multimedia Resource Function (MRF), through the RTSP messages to exert interactive media control between a user and the MRF.

21. A method for establishing an interactive media session based on IP Multimedia Subsystem, comprising:

receiving, by a media control entity, an interactive service request initiated by a terminal;

negotiating, by a media carrier entity, an address port for Real-time Transport Protocol (RTP) connection to communicate with the terminal under the control of the media control entity;

establishing an RTP connection for media stream delivery between the terminal and the media carrier entity;

delivering a SIP message to the media control entity by the terminal, the SIP message carries media interactive control information;

acquiring, by the media control entity from the SIP message, the media interactive control information and converting the media interactive control information to an H.248 message; and

controlling, by the media control entity, the media carrier entity to interact, so as to realize media interactive control through the H.248 message.

22. A method for establishing an interactive media session based on IP Multimedia Subsystem, comprising:

receiving, by a media stream server which finally provides service, an interactive service request initiated by a terminal;

negotiating, under the control of a controller inside the media stream server, by the media stream server, an address port for Real-time Transport Protocol (RTP) connection to communicate with the terminal;

establishing an RTP connection for media stream delivery between the terminal and the media stream server;

providing, by the terminal, media interactive control information through a Session Initiation Protocol (SIP) message extension;

sending, by the IMS network, the SIP message to an Multimedia Recourse Function (MRF); and

converting, by the MRF, the media interactive control information carried in the SIP message to a Real Time Stream Protocol (RTSP) message and exerting media interactive control with a media server already deployed in the network to realize the media interactive control between the terminal and the media stream server which finally provides service.

23. The method of claim 22, wherein the converting by the MRF the media interactive control information carried in the SIP message to an RTSP message and performing media interactive control with a media server already deployed in the network comprises:

acquiring, by a media control entity, the media interactive control information from the SIP message and converting the media interactive control information to an RTSP message;

performing, by the media control entity, media interactive control with a media server already deployed in the network through the RTSP message.

24. The method of claim 22, wherein the converting by the MRF the media interactive control information carried in the SIP message to RTSP message and performing media interactive control with a media server already deployed in the network comprises:

acquiring, by the media control entity, the media interactive control information from the SIP message and converting the media interactive control information to an H.248 message, and controlling the media carrier entity to convert the media interactive control information to an RTSP message; and

exerting, by the media carrier entity, the media interactive control with the media server already deployed in the network through the RTSP message.

25. A system for establishing an interactive media session based on IP Multimedia Subsystem, comprising an application server, a media control entity and a media carrier entity, wherein the media carrier entity is in communication with a terminal, wherein

the terminal is adapted to initiate an interactive service request and establish a Real Time Stream Protocol (RTSP) connection and a Real-time Transport Protocol (RTP) connection;

the application server is adapted to process the service request;

the media control entity is adapted to control resource allocation of the media carrier entity; and

the media carrier entity is adapted to allocate, under the control of the media control entity, address ports for an RTSP connection and an RTP connection, and establish the RTSP connection and the RTP connection with the terminal.

26. The system of claim 25, wherein, the media control entity is a Multimedia Resource Function Controller (MRFC) or a functional entity independent of the MRFC;

the media carrier entity is a Multimedia Resource Function Processor (MRFP) or a functional entity independent of the MRFP.

27. A system for establishing an interactive media session based on IMS Multimedia Subsystem, comprising:

an application server, a media control entity, a media carrier entity, wherein the media carrier entity is in communication with a terminal, wherein

the terminal is adapted to initiate an interactive service request and establish a Real Time Stream Protocol (RTSP) connection and a Real-time Transport Protocol (RTP) connection;

the application server is adapted to process the service request;

the media control entity is adapted to control resource allocation of the media carrier entity, and allocate an address port for RTSP connection to establish an RTSP connection with the terminal; and

the media carrier entity is adapted to allocate an address port for RTP connection under the control of the media control entity and establish an RTP connection with the terminal.

28. The system of claim 27, wherein, the media control entity is a Multimedia Resource Function Controller (MRFC) or a functional entity independent of the MRFC;

the media carrier entity is a Multimedia Resource Function Processor (MRFP) or a functional entity independent of the MRFP.

29. A media resource control device, comprising:

a first interactive unit, adapted to receive a request initiated by a terminal, and as a response, return to the terminal addresses ports for establishing Real Time Stream Protocol (RTSP) and Real-time Transport Protocol (RTP) connections with the terminal based on address ports of the terminal for establishing RTSP and RTP connections carried in the request;

a control unit, adapted to control a media carrier entity to allocate the address ports for establishing RTSP and RTP connections with the terminal, based on the request received by the first interactive unit.

30. The device of claim 29, wherein the request is an interactive service request, and the interactive service request carries information about the address port for RTSP connection and RTP connection of the terminal;

the address ports allocated by the media carrier entity for establishing connections with the terminal comprise the address ports for RTSP connection and RTP connection.

31. The device of claim 29, wherein the request includes the interactive service request delivered by the terminal before establishing the RTSP connection and a SETUP message delivered over the established RTSP connection by the terminal;

the interactive service request carries information about the address port for RTSP connection of the terminal, and the SETUP message carries information about the address port for RTP connection of the terminal.

32. A media resource control device, comprising:

a first interactive unit, adapted to receive a request delivered by a terminal, and as a response, return to the terminal address ports for establishing connections with the terminal;

a port allocating unit, adapted to allocate a local address port for Real Time Stream Protocol (RTSP) connection based on the request received by the first interactive unit;

a control unit, for controlling a media carrier entity to allocate an address port for establishing an Real-time Transport Protocol (RTP) connection with the terminal, based on the request received by the first interactive unit.

33. The device of claim 32, wherein the request is an interactive service request, the interactive service request carries an address port for RTSP connection and an address port for RTP connection of the terminal.

34. The device of claim 32, wherein the request includes an interactive service request delivered before establishing the RTSP connection and a SETUP message delivered over the established RTSP connection by the terminal;

the interactive service request carries an address port for RTSP connection of the terminal, and the SETUP message carries information about an address port for RTP connection of the terminal.

35. A media resource processing device, wherein the device comprises:

a port allocating unit, adapted to allocate, under the control of a media control entity, local address ports for Real Time Stream Protocol (RTSP) connection and Real-time Transport Protocol (RTP) connection with a terminal;

a delivering unit, adapted to deliver the address ports for RTSP connection and RTP connection to the media control entity.

36. The device of claim 35, wherein the local address ports allocated by the port allocating unit comprises an address port for RTSP connection and an address port for RTP connection;

the address port delivered to the media control entity by the delivering unit includes the address port for RTSP connection and the address port for RTP connection.

37. The device of claim 35, wherein the local address ports allocated by the port allocating unit comprises an address port for RTP connection, the delivering unit sends the address port for RTP connection to the media control entity via a response to the SETUP message.

38. The device of claim 35, wherein the local address ports allocated by the port allocating unit comprise an address port for RTSP connection and an address port for RTP connection, the address ports delivered to the media control entity by the delivering unit include the address port for RTSP connection and the address port for RTP connection delivered to the media control entity via a response to the SETUP message.