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

• US 8,150,975 B2
• Filed: 10/29/2010
• Issued: 04/03/2012
• Est. Priority Date: 02/18/2006
• Status: Expired due to Fees

• Current Assignee: RPX Corporation
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Li, Jicheng, Yan, Jun, Wu, Xiangyang
• Primary Examiner(s): Meky, Moustafa M
• Application Number:
  US12/916,164
• Publication Number:
  US 20110055405A1
• Time in Patent Office: 522 Days
• Field of Search: 709200-203, 709217-227, 709231-232, 709/233
• 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 (IMS) network, comprising:

receiving, by a media control entity in the IMS network, an interactive service request initiated by a terminal, wherein the interactive service request carries a first address port for an RTSP connection and a first address port for an RTP connection;

controlling, by the media control entity, a media carrier entity in the IMS network to negotiate a second address port for the RTSP connection and a second address port for the RTP connection to communicate with the terminal; and

establishing another RTSP connection for interactive control based on the first address port for the RTSP connection and the second address port for the RTSP connection between the terminal and the media carrier entity, and establishing another RTP connection for media stream delivery based on the first address port for the RTP connection and the second address port for the RTP connection between the terminal and the media carrier entity.

2. The method of claim 1, wherein

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

controlling, by the media control entity, the media carrier entity to interact, and acquiring the second address port which is allocated by the media carrier entity for the RTSP connection and the second address port which is allocated by the media carrier entity for the RTP connection; and

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

3. The method of claim 1, wherein

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

negotiating, by the media carrier entity, the second address port for the 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 second address port for the 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 second address port for the RTSP connection to interact with the terminal comprises:

controlling, by the media control entity, the media carrier entity to interact, and acquiring the second 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, wherein the service request response carries information about the second address port for the RTSP connection.

5. The method of claim 3, wherein the negotiating the second address port for the 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 the first address port for RTP connection of the terminal for media stream delivery;

allocating, by the media carrier entity, a local address port for the RTP connection and reporting the local address port for the RTP connection 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 local address port for the RTP connection of the media carrier entity.

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

controlling, by the media control entity, the media carrier entity to interact, and acquiring the second 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 second 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 (IMS) network, comprising:

receiving, by a Multimedia Resource Function (MRF) in the IMS network, an interactive service request initiated by a terminal;

negotiating, by the MRF, a first address port for an RTSP connection and a first address port for an RTP connection to interact with the terminal;

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

establishing another RTP connection for media stream delivery based on the first address port for the 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, or converting an RTSP message from the terminal to an H.248 message or a SIP message, and then delivering the H.248 message or the SIP 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 RTSP message to the media carrier entity, or converting the 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 a second address port for the RTSP connection of the terminal;

and

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

negotiating, by the MRF, the first address port for the 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 first address port for the 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 MRF, the first address port for the RTSP connection to communicate with the terminal comprises:

controlling, by the media control entity, the media carrier entity to interact, and acquiring the first 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 the 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 local 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 first address port for the 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, wherein the SETUP message carries the terminal'"'"'s information about a second address port for the 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 first address port for RTP connection to the media control entity;

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

13. 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.

14. The method of claim 10, wherein:

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

allocating, by the media control entity, the first address port 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 first address port for the RTSP connection of the media control entity.

15. The method of claim 14, wherein the negotiating by the media carrier entity the first address port for the 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 a second address port for the 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 first address port for RTP connection under the control of the media control entity and returning the allocated first address port for the RTP connection 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 first address port for the RTP connection allocated by the media carrier entity.

16. The method of claim 7, wherein:

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

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

controlling, by the media control entity, the media carrier entity to interact, and acquiring the first address port which is allocated by the media carrier entity for the RTSP connection and the first address port which is allocated by the media carrier entity for the 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 local address port for the RTSP connection of the media control entity and the first address port for the RTP connection of the media carrier entity.

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

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

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

controlling, by the media control entity the media carrier entity to interact and acquiring the first 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, wherein the service request response carries information about the first address port for RTSP connection of the media control entity and the first address port for RTP connection of the media carrier entity.

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

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

negotiating, by the application server, an address port for 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 the RTP connection to communicate with the terminal; and

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 H.248 message or the SIP message to the media control entity;

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

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

receiving, by a media control entity in the IMS network, an interactive service request initiated by a terminal;

negotiating, under the control of the media control entity, by a media carrier entity in the IMS network, 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 message 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 (IMS) network, comprising:

receiving, by a media control entity in the IMS network, an interactive service request initiated by a terminal;

negotiating, by a media carrier entity in the IMS network, an address port for 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 carrying 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 a media interactive control through the H.248 message.

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

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

negotiating, under a control of a controller of the media stream server, by the media stream server, an address port for 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 SIP message extension;

sending, by the IMS network, the SIP message to an MRF; and

converting, by the MRF, the media interactive control information carried in the SIP message to an RTSP message and performing a media interactive control with a media server to realize the media interactive control between the terminal and the media stream server.

23. The method of claim 22, wherein the converting and performing comprises:

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

performing, by the media control entity, the media interactive control with the media server through the RTSP message.

24. The method of claim 22, wherein the converting and performing 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 H.248 message, and controlling a media carrier entity to convert the media interactive control information to the RTSP message; and

performing, by the media carrier entity, the media interactive control with the media server through the RTSP message.

25. A system for establishing an interactive media session based on IP Multimedia Subsystem (IMS) network, comprising an application server, a media control entity and a media carrier entity, wherein the application server, the media control entity and the media carrier entity are in the IMS network, 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 interactive service request;

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

the media carrier entity is adapted to allocate, under a control of the media control entity, address ports for RTSP connection and 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 an IP Multimedia Subsystem (IMS) network, comprising:

an application server, a media control entity, and a media carrier entity, wherein the application server, the media control entity and the media carrier entity are in the IMS network, 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 interactive service request;

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

the media carrier entity is adapted to allocate an address port for RTP connection under a control of the media control entity and establish the 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 in an IP multimedia subsystem (IMS) network, comprising:

a first interactive unit, adapted to receive a request initiated by a terminal, and as a response, return to the terminal a first address port for establishing a RTSP connection and a first address port for establishing a RTP connection, wherein the request carries a second address port for establishing the RTSP connection and a second address port for establishing the RTP connection;

a control unit, adapted to control a media carrier entity to allocate the first address port for establishing the RTSP connection and the first address port for establishing the RTP connection, 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 second address port for establishing the RTSP connection and the second address port for establishing the RTP connection of the terminal.

31. The device of claim 29, wherein the request includes an 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 second address port for establishing the RTSP connection of the terminal, and the SETUP message carries information about the second address port for establishing the 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 an address port for establishing an RTSP connection and an address port for establishing a RTP connection;

a port allocating unit, adapted to allocate the address port for establishing the RTSP connection based on the request received by the first interactive unit;

a control unit, for controlling a media carrier entity to allocate the address port for establishing the 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 establishing the RTSP connection and an address port for establishing the 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 establishing the RTSP connection of the terminal, and the SETUP message carries information about the address port for establishing the RTP connection of the terminal.