WO2009033392A1

WO2009033392A1 - Multimedia-on-demand method and system, multimedia terminal, multimedia system and service proxy

Info

Publication number: WO2009033392A1
Application number: PCT/CN2008/072106
Authority: WO
Inventors: Haitao Wei; Ping Liu
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2007-09-13
Filing date: 2008-08-22
Publication date: 2009-03-19
Also published as: CN101123718A; CN101123718B

Abstract

A multimedia-on-demand method and system, a multimedia terminal, a multimedia system and a service proxy are disclosed. In the multimedia-on-demand method, the multimedia terminal transmits a multimedia-on-demand call request including the on-demand media streaming information to the application server, the multimedia terminal receives a multimedia-on-demand call request response message including the address corresponding to the on-demand media streaming from the application server, and the multimedia terminal obtains the on-demand media streaming based on the address included in the multimedia-on-demand call request response message.

Description

Multimedia on-demand method and system, multimedia terminal, multimedia system and service agent

This application claims priority to Chinese Patent Application No. 200710149392.8, entitled "Multimedia on-Demand Method and System, Multimedia Terminal", filed on September 13, 2007, the entire contents of which are incorporated herein by reference. In the application.

Technical field

The present invention relates to the field of Internet communication technologies, and in particular, to a multimedia on-demand method and system, and a multimedia terminal.

Background technique

Next Generation Network (NGN) is a service-driven network that uses a comprehensive, open, and converged network architecture to achieve complete separation between services and call control, and complete separation of call control and bearer. Business system, making the business independent of the network. The softswitch as the application server is the control function entity of NGN. It provides call control and connection control functions for services with real-time requirements, and is the core of NGN call and control. As a high-capacity, high-performance application server product, it belongs to the second type of telecommunication equipment (that is, the equipment located in the central computer room and has no subscriber line interface). It is mainly applied to the network control layer of NGN and completes the Internet Protocol (IP). The voice, data, call control and connection management functions of the packet network.

Common multimedia terminals with multimedia application functions include separate terminals, converged terminals, and pure conference initiation protocol (SIP) terminals. The separate terminal refers to a public telephone exchange network (PSTN), and the SIP phone of the videophone is separated from the SIP phone. After the separation, the multimedia of the SIP phone is output to the television. The built-in SIP phone of the TV is built in. Generally, there is a network port or Asymmetrical Digital Subscriber Line (ADSL) interface. The converged terminal means that the PSTN's ordinary phone and the SIP phone of the videophone are merged together, the physical entity is one, and the internal logic is divided into PSTN phones. And SIP phone, built-in ADSL interface and network port; pure SIP terminal is similar to the fusion terminal, the difference is that it has a separate LCD (LCD, Liquid Crystal Display) screen, such as the market VP8220 terminal or MC820 terminal.

Among them, the SIP phone performs multimedia communication on the IP network based on the SIP protocol. The SIP protocol is an application layer control protocol for multimedia communication over IP networks proposed and hosted by the IETF. It is used to create, modify, and terminate session sessions attended by one or more participants. These sessions include Internet multimedia conferencing, Internet telephony, distance education, and telemedicine. All causes Interactive two-way or multi-party multimedia communication activities on the Internet, collectively referred to as multimedia sessions.

VOD (Video On Demand) means that the user can browse and operate the corresponding multimedia content in the multimedia library on the multimedia interface of the terminal, and the multimedia library has rich multimedia content. At present, multimedia terminals with multimedia application functions cannot implement multimedia on-demand through multimedia on-demand call requests.

Therefore, in the process of creating the present invention, the inventors have found that at least the following problems exist in the prior art: In the technical solution provided by the prior art, the multimedia terminal cannot implement multimedia on-demand by initiating a multimedia on-demand call request.

Summary of the invention

The embodiments of the present invention provide a multimedia on-demand method and system, a multimedia terminal, a multimedia system, and a service agent, which can implement multimedia on-demand through a multimedia on-demand call.

The embodiments of the present invention provide the following technical solutions:

An embodiment of the present invention provides a method for multimedia on-demand, including:

The multimedia terminal sends a multimedia on-demand call request to the application server, where the multimedia on-demand call request carries the on-demand media stream information;

Receiving, by the multimedia terminal, a response message of the call request of the multimedia on-demand returned by the application server, where the response message of the call request of the multimedia on-demand carries an address corresponding to the media stream of the on-demand; the response message of the multimedia terminal according to the call request of the multimedia on-demand The address carried in the media stream corresponding to the on-demand media stream is obtained.

An embodiment of the present invention further provides a system for multimedia on-demand, including:

a multimedia terminal, configured to send a multimedia on-demand call request, carry the on-demand media stream information, and obtain an on-demand media stream according to the address corresponding to the on-demand media stream carried in the response message of the returned multimedia on-demand call request;

a multimedia system, configured to receive a multimedia on-demand call request sent by the multimedia terminal, and return a response message of the multimedia on-demand call request carrying the address corresponding to the on-demand media stream to the multimedia terminal according to the multimedia on-demand call request, and Providing the multimedia terminal with the media stream on demand by the multimedia terminal.

The embodiment of the invention further provides a multimedia on-demand system, including:

a multimedia terminal, configured to send a multimedia on-demand call request, and according to the returned multimedia on-demand The address corresponding to the on-demand media stream carried in the response message of the call request, and the on-demand media stream is obtained;

a service agent, configured to receive a multimedia on-demand call request sent by the multimedia terminal, and return a multimedia on-demand carrying an address corresponding to the on-demand media stream according to the on-demand media stream information carried by the multimedia on-demand call request The response message of the call request to the multimedia system;

a multimedia system, configured to provide a multimedia terminal with a multimedia stream on demand by the multimedia terminal.

The embodiment of the invention further provides a multimedia terminal, including:

a sending unit, configured to send a multimedia on-demand call request;

a receiving unit, configured to receive a response message of the returned multimedia on-demand call request, where the response message of the multimedia on-demand call request carries an address corresponding to the on-demand media stream;

And a media stream obtaining unit, configured to obtain an on-demand media stream according to an address corresponding to the media stream that is requested to be received by the receiving unit.

The embodiment of the invention further provides a multimedia system, including:

a receiving unit, configured to receive a multimedia on-demand call request forwarded by the application server, and carry the on-demand media stream information;

a sending unit, configured to return a response message of the multimedia on-demand call request to the application server according to the on-demand media stream information carried by the multimedia on-demand call request received by the receiving unit, where the response message of the multimedia on-demand call request is carried in The address corresponding to the media stream on demand;

And a media stream providing unit, configured to provide an on-demand media stream to the multimedia terminal according to the request for acquiring the media stream of the on-demand sent by the multimedia terminal.

The embodiment of the invention further provides a service agent, including:

a receiving unit, configured to receive a multimedia on-demand call request sent by the application server, where the multimedia on-demand call request carries the on-demand media stream information;

a storage unit, configured to store a correspondence between media stream information and a media stream address;

a querying unit, configured to query, according to the on-demand media stream information in the multimedia on-demand call request received by the receiving unit, the storage unit to obtain an address of the media stream corresponding to the media stream information; and a sending unit, configured to send the multimedia The response message of the on-demand call request is sent to the application server, and the response message carries the address of the media stream obtained by the query unit.

Method and system for multimedia on-demand provided by embodiments of the present invention, multimedia terminal, multimedia terminal, The multimedia system and the service agent can obtain the address of the on-demand media stream by initiating a multimedia on-demand call request to the application server, and obtain the on-demand media stream from the multimedia system according to the obtained media stream address, thereby implementing the multimedia on-demand call request. Make multimedia on-demand.

DRAWINGS

1 is a signaling flowchart of Embodiment 1 of a method for multimedia on-demand according to the present invention;

2 is a signaling flowchart of Embodiment 2 of a method for multimedia on-demand according to the present invention;

3 is a signaling flowchart of Embodiment 3 of a method for multimedia on-demand according to the present invention;

4 is a signaling flowchart of Embodiment 4 of a method for multimedia on-demand according to the present invention;

5 is a flowchart of Embodiment 5 of a method for multimedia on-demand according to the present invention;

6 is a structural diagram of Embodiment 1 of a system for multimedia on-demand according to the present invention;

FIG. 7 is a structural diagram of Embodiment 2 of a system for multimedia on-demand according to the present invention.

detailed description

Embodiments of the present invention provide a method and system for multimedia on-demand, and a multimedia terminal. In order to make the technical solutions of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

Please refer to FIG. 1 , which is a flowchart of Embodiment 1 of a method for multimedia on-demand according to the present invention. In this embodiment, the multimedia terminal is a converged terminal, and the multimedia system is in a media server (Media Server), and the fusion terminal directly requests the on-demand multimedia to the Media Server based on the application server.

The specific process of the multimedia on-demand method includes:

Step 101: The user sends a multimedia on-demand call request to the application server through the convergence terminal, and carries the on-demand media stream information.

In this embodiment, the application server is a soft switch, such as the SX3000.

The multimedia on-demand call request may carry a multimedia on-demand access code.

For example, when the multimedia on-demand access code is 999, the application server translates the multimedia on-demand access code 999 into the call address 28780999 of the multimedia system through an external address translation database (for example, SHLR9200), and the application server may refer to the method according to 28780999. The multimedia on-demand call request is routed to the corresponding Media Server of 28780999.

The on-demand media stream information may be a code corresponding to the media stream, for example, the code 12345 represents the video program A, the code 54321 represents the audio program B, and the like. Step 102: The application server forwards the multimedia on-demand call request to the streaming media server.

The call request of the multimedia on-demand may further carry the subscription information of the converged terminal, and before forwarding the call request of the multimedia on-demand, the application server may further perform the authentication of the call request of the multimedia on-demand according to the subscription information, if If the authentication succeeds, the call request of the multimedia on-demand is forwarded; if the authentication fails, the call request of the multimedia on-demand is rejected.

Step 103: The streaming media server returns a response message of the multimedia on-demand call request to the application server, and carries an address corresponding to the media stream of the on-demand media, that is, a Real Time Streaming Protocol (RTSP) uniform resource of the media stream in the streaming media server. Identifier (URI, Uniform Resource Identifier) address;

The response message of the multimedia on-demand call request is a SIP 3XX message, such as a SIP 302 message. The SIP 3XX message generally supports the TEL/TEL URI/SIP URI. Since the SIP 3XX message needs to carry the address of the media stream in the streaming media server in this embodiment, the URI address in the SIP 3XX message needs to be extended to enable the SIP. The 3XX message also supports the RTSP URI.

The following is an example of the format of an extended SIP 302 message:

SIP/2.0 302 Moved Temporarily

Via: SIP/2.0/UDP 182.20.20.100:5061; branch=z9hG4bKa271 bd8c4

Call-ID: e870d228a24d260c0d6acbb3a271bd8c@182.20.20.100

From: <sip:07558880001@182.20.20.100;user=phone>;tag=a271bd8c

To: <si :10001@182.20.70.100 ;user=phone>;tag=41 b092cb

CSeq: 1 INVITE

Contact: < rts : //media. example . com :554/ twister >

Content-Length: ...

The RTSP URI is in the Contact field of SIP 302.

Step 104: The application server forwards the response message of the multimedia on-demand call request to the fusion terminal.

Step 105: The converged terminal returns an acknowledgement message to the application server.

Step 106: The application server forwards the confirmation message to the streaming server.

The following is the RTSP standard session process between the converged terminal and the streaming media server, that is, the converged terminal from The specific process of the streaming server to obtain the required media stream:

Step 107: According to the URI address of the media server media stream carried in the response message of the multimedia on-demand call request, the fused terminal sends an RTSP connection request to the streaming media server. Step 108: The streaming media server returns the RTSP connection to the fused terminal successfully. Response message; Step 109: The Fusion Terminal sends an OPTION request to the streaming server, requesting the streaming server to provide the type of the message it supports;

Step 110: The streaming media server returns a response message of the OPTION request to the converged terminal, and carries a message type supported by the streaming media server.

Step 111: The converged terminal sends a description (DESCRIBE) request to the streaming media server, requesting the streaming media server to provide its specific connection information, such as a port address;

Step 112: The streaming media server returns a response message of the DESCRIBE request to the converged terminal, and carries specific connection information of the streaming media server.

Step 113: The converged terminal sends a multimedia message (such as audio, video, etc.) to establish a request to the streaming media server;

Step 114: The streaming media server returns a response message of the multimedia information establishment request to the fusion terminal. Step 115: According to the multimedia information requested by the user, the fusion terminal sends a PLAY request to the streaming media server.

Step 116: The streaming media server returns a response message of the PLAY request to the converged terminal. Step 117: The streaming media server sends the media stream corresponding to the user-on-demand multimedia information to the converged terminal.

For a pure SIP terminal, it is similar to the above multimedia on-demand process of the converged terminal. The split terminal sends a multimedia on-demand call request (for example, dialing with a TV remote control) by remote dialing, and the other process is similar to the converged terminal. Therefore, no further description will be made.

Referring to FIG. 2, it is a flowchart of Embodiment 2 of a method for multimedia on-demand according to the present invention. In this embodiment, the multimedia terminal is a converged terminal, and the multimedia system is in a web server, and the converged terminal requests the on-demand multimedia to the web server indirectly through the service proxy based on the application server.

The specific process of the multimedia on-demand method includes:

Step 201: The user sends a multimedia on-demand call request to the application server by using the convergence terminal. In this embodiment, the application server is a soft switch. The multimedia on-demand call request may carry a multimedia on-demand access code.

Step 202: The application server forwards the call request of the multimedia on-demand to the service proxy; the call request of the multimedia on-demand may further carry the subscription information of the converged terminal, and before forwarding the call request of the multimedia on-demand, the application server may further And signing the call request of the multimedia on-demand, and if the authentication is successful, forwarding the call request of the multimedia on-demand; if the authentication fails, rejecting the call request of the multimedia on-demand.

Step 203: The service agent translates the multimedia on-demand access code carried by the multimedia on-demand call request, obtains the number of the multimedia system, and obtains a hypertext transfer protocol of the network server corresponding to the number of the multimedia system (HTTP, Hyper Text Transport Protocol) The correspondence between the number of the multimedia system stored in the service agent and the HTTP URI address of the network service.

For example, when the multimedia on-demand access code is 999, the service agent translates the multimedia on-demand access code 999 into the call address 28780999, and obtains the URI address of the corresponding web server according to 28780999.

Step 204: The service proxy returns a response message of the multimedia on-demand call request to the application server, and carries the HTTP URI address of the network server.

The response message of the multimedia on-demand call request is a SIP 3XX message, such as a SIP 302 message. The SIP 3XX message generally supports the TEL URI/SIP URI. In this embodiment, the SIP 3XX message needs to carry the HTTP URI address of the network server. Therefore, the URI address in the SIP 3XX message needs to be extended, so that the SIP 3XX message also supports the HTTP URL.

The following is an example of the format of an extended SIP 302 message:

SIP/2.0 302 Moved Temporarily

Via: SIP/2.0/UDP 182.20.20.100:5061; branch=z9hG4bKa271 bd8c4

Call-ID: e870d228a24d260c0d6acbb3a271bd8c@182.20.20.100

From: <sip:07558880001@182.20.20.100;user=phone>;tag=a271bd8c

To: <si :10001@182.20.70.100;user=phone>;tag=41 b092cb

CSeq: 1 INVITE

Contact: <http://www.huawei.com>

Content-Length: ... The HTTP URI is in the Contact field of SIP 302.

Step 205: The application server forwards the response message of the multimedia on-demand call request to the fusion terminal.

Step 206: The converged terminal returns an acknowledgement message to the application server.

Step 207: The application server forwards an acknowledgement message to the service proxy.

The following is the HTTP standard session process between the converged terminal and the web server, that is, the converged terminal acquires the address corresponding to the on-demand media stream, that is, the process of the RTSP URI of the on-demand media stream in the web server:

Step 208: The fused terminal sends a connection control protocol (TCP) connection request to the network server according to the HTTP URI address of the network server carried in the response message of the multimedia on-demand call request.

Step 209: The network server returns a response message indicating that the TCP connection is successful to the converged terminal. Step 210: According to the media stream required by the user, the converged terminal sends an HTTP request to the network server.

Step 211: The network server returns a response message of the HTTP request to the converged terminal, and carries an RTSP URI of the media stream required by the user on the network server.

The following is the RTSP standard session process between the converged terminal and the network server, that is, the specific process of the converged terminal obtaining the required media stream from the network server:

Step 212: The media stream carried in the response message of the HTTP request is sent to the network server by using the RTSP URI of the network server, and the convergence terminal sends an RTSP connection request to the network server.

Step 213: The network server returns a response message that the RTSP connection succeeds to the converged terminal. Step 214: The converged terminal sends an OPTION request to the network server to request to acquire a message type supported by the network server.

Step 215: The network server returns a response message of the OPTION request to the converged terminal, and carries a message type supported by the network server.

Step 216: The converged terminal sends a description (DESCRIBE) request to the network server, requesting to acquire specific information of the network server, such as an address of the network server, port information, and the like;

Step 217: The network server returns a response message of the DESCRIBE request to the converged terminal, and carries specific information of the network server. Step 218: The converged terminal sends a media stream (eg, audio, multimedia, etc.) to establish a request to the network server.

Step 219: The network server returns a response message of the media stream establishment request to the converged terminal. Step 220: According to the media stream that the user orders, the converged terminal sends a PLAY request to the network server.

Step 221: The network server returns a response message of the PLAY request to the converged terminal.

Step 222: The network server sends the media stream that the user clicks to the converged terminal.

For a pure SIP terminal, it is the same as the above multimedia on-demand process of the converged terminal. Therefore, no further description will be made.

Please refer to FIG. 3 , which is a flowchart of Embodiment 3 of a method for multimedia on-demand according to the present invention. In this embodiment, the multimedia terminal is a separate terminal, and the multimedia system is in the streaming media server, and the separate terminal requests the on-demand multimedia to the streaming media server indirectly through the service proxy based on the application server.

The specific process of the multimedia on-demand method includes:

Step 301: The user sends a multimedia on-demand call request to the application server through the public switched telephone network (PSTN) of the separated terminal, and carries the media stream information of the on-demand;

In this embodiment, the application server is a soft switch.

The on-demand media stream information may be a code corresponding to the media stream, for example, code 12345 represents video program A, code 54321 represents audio program B, and the like.

Step 302: The application server forwards the call request of the multimedia on-demand to the service proxy. The call request of the multimedia on-demand can also carry the subscription information of the converged terminal. Before forwarding the call request of the multimedia on-demand, the application server may further And signing the call request of the multimedia on-demand, and if the authentication is successful, forwarding the call request of the multimedia on-demand; if the authentication fails, rejecting the call request of the multimedia on-demand.

Step 303: The service agent translates the multimedia on-demand access code and the media stream information carried by the multimedia on-demand call request, and obtains an address corresponding to the on-demand media stream, that is, an RTSP URI address of the media stream in the streaming media server.

The service agent stores the correspondence between the multimedia on-demand code, the media stream information, and the RTSP URI address. Step 304: The service proxy returns a response message of the multimedia on-demand call request to the application server, and carries an RTSP URI address of the media stream in the streaming media server.

The response message of the multimedia on-demand call request is a SIP 3XX message, such as a SIP 302 message. The SIP 3XX message generally supports the TEL URI/SIP URI. In this embodiment, the SIP 3XX message needs to carry the RTSP URI address of the media stream in the media stream server, so the SIP needs to be extended.

The URI address in the 3XX message enables the SIP 3XX message to also support the RTSP URI. The expansion can be performed as shown in the first embodiment.

Step 305: The application server queries the external database to obtain the SIP phone address bound to the separate terminal. Step 306: The application server encapsulates the URI address of the streaming media server in the BODY of the SIP INFO message and sends the SIP phone bound to the separate terminal. ;

The SIP INFO message generally supports the TEL URI/SIP URI. Since the SIP INFO message needs to carry the address of the streaming media server in this embodiment, the URI address in the SIP INFO message needs to be extended, so that the SIP INFO message also supports the RTSP URI.

The following is an example of the format of an extended SIP INFO message:

INFO sip: 075589834250@10.75.35.161;user=phone SIP/2.0

Via: SIP/2.0/UDP 10.70.106.82:5060;branch=z9hG4bK3883054875

From: <sip: 114@10.75.35.161;user=phone>;tag=1451640803

To: <sip: 075589834250@10.75.35.161;user=phone>

Call-ID: EC78236491@10.70.106.82

CSeq: 29 INFO

Max-Forwards: 5

Subject: Client Request

Allow: INVITE, ACK, CANCEL, BYE, OPTIONS, REFER, SUBSCRIBE, NOTIFY, INFO, INFO

Content- Type: text/xml

Content-Length: ..

<inf

*********** * ^^^/linl i^iri^*

</inf

The INFO message body is in XML format, and the maximum length of the message body is 512 bytes. <Cont> Parameters (Tag) and <linkuri> Tag use base64 encoding to encode only these two fields. <Cont> Tag is the information content of the displayed multimedia system. It can be text information or one or more link addresses. <Linkuri> Tag is the link address, which can be HTTP URI or RTSP URL <autolink> Tag is automatic link, 1 means automatic link, 0 means user selection.

If the terminal receives the INFO message and only contains <cont>, the information content of the multimedia system is displayed on the terminal; if only <linkuri> is included, the terminal can decide whether to automatically link the URI in the <Linkuri> Tag according to the command code and the parameter. If both <001^> and <1^110^> are included, the content of the multimedia system is displayed on the terminal and downloaded by the URI in the <Linkuri> Tag, and the terminal can decide to automatically link according to the command code and the parameter. Linkuri> The URI in the tag, or whether the user chooses whether to link.

Step 307: The application server returns an ACK response message to the service agent.

Step 308: The SIP phone that is bound to the terminal returns a SIP 200 response message to the application server. Step 309: The application server sends a release (RELCOM/REL) message to the PSTN phone used by the separated terminal user to notify the PSTN phone that the call process ends.

The following is the RTSP standard session process between the split terminal and the streaming server:

Step 310: According to the RTSP URI address of the streaming media server carried in the INFO message, the SIP phone of the separation terminal sends an RTSP connection request to the streaming media server.

Step 311: The streaming media server returns a response message indicating that the RTSP connection is successful to the SIP phone of the separated terminal.

Step 312: The SIP phone separating the terminal sends an OPTION request to the streaming media server, requesting the streaming media server to provide a multimedia menu of the multimedia system;

Step 313: The streaming media server returns a response message of the OPTION request to the SIP phone of the separated terminal, and carries a multimedia menu of the multimedia system;

Step 314: The SIP phone separating the terminal sends a DESCRIBE request to the streaming media server. Step 315: The streaming media server returns the DESCRIBE request to the SIP phone of the separated terminal. Message

Step 316: The SIP phone of the separation terminal sends an audio, multimedia setup request to the streaming service, crying.

Step 317: The streaming media server returns a response message of the audio and multimedia establishment request to the SIP phone of the separated terminal.

Step 318: According to the audio and multimedia broadcasted by the user, the SIP phone of the separated terminal sends a PLAY request to the streaming media server.

Step 319: The streaming media server returns a response message of the PLAY request to the SIP phone of the separated terminal.

Step 320: The streaming media server sends the user-on-demand audio and the media stream corresponding to the multimedia to the SIP phone of the separate terminal.

Referring to FIG. 4, it is a flowchart of Embodiment 4 of a method for multimedia on-demand according to the present invention. The application scenario of this embodiment is an IP Multimedia Subsystem (IMS) system, and the multimedia terminal is a separate terminal, and the media stream is requested by the service agent to the multimedia system.

The specific process of the multimedia on-demand includes:

Step 401: Separate the terminal The PSTN phone sends a video on demand call request to the application server, and carries the on-demand media stream information.

In this embodiment, the application server is a SIP server.

Step 402: The SIP server forwards the multimedia on-demand call request to a call-session control function unit (S-CSCF, Serving-Call Session Control Function);

Step 403: The S-CSCF forwards the multimedia on-demand call request to a second proxy call session control function unit (P-CSCF, Proxy-Call Session Control Function);

The second proxy call session control functional unit accesses the service proxy to the IMS core network.

Step 404: The second P-CSCF forwards the multimedia on-demand call request to the service proxy. Step 405: The service proxy returns a response message of the multimedia on-demand call request to the second P-CSCF, and carries the media stream in the streaming media server. RTSP URI address; The response message of the multimedia on-demand call request is a SIP 3XX message, such as a SIP 302 message.

The SIP 3XX message generally supports the TEL URI/SIP URI. In this embodiment, the SIP 3XX message needs to carry the RTSP URI address of the media stream in the media stream server, so the URI address in the SIP 3XX message needs to be extended, so that the SIP 3XX message is also Support for RTSP URIs. The expansion can be performed as shown in the first embodiment.

Step 406: The second P-CSCF forwards the response message of the multimedia on-demand call request to the S-CSCF;

Step 407: The S-CSCF forwards the response message of the multimedia on-demand call request to the SIP server.

Step 408: The SIP server encapsulates the URI address of the streaming media server in the BODY of the SIP INFO message and sends it to the S-CSCF.

Step 409: The S-CSCF forwards the SIP INFO message to the first P-CSCF.

The first proxy call session control function unit accesses the SIP phone of the split terminal to the IMS core network.

Step 410: The first P-CSCF forwards the SIP INFO to the PSTN phone of the separate terminal. Step 411: The PSTN phone of the split terminal forwards the SIP INFO message to the SIP phone of the separate terminal.

Step 412: The SIP phone separating the terminal returns a SIP 200 response message to the PSTN phone of the separate terminal.

Step 413: The PSTN phone of the split terminal forwards the SIP 200 response message to the first P-CSCF; Step 414: The first P-CSCF forwards the SIP 200 response message to the S-CSCF;

Step 415: The S-CSCF forwards the SIP 200 response message to the SIP server.

Step 416: The SIP server returns an ACK message to the S-CSCF.

Step 417: The S-CSCF forwards the ACK message to the second P-CSCF.

Step 418: The second P-CSCF forwards the ACK message to the service agent.

Step 419: The SIP server sends a REL message to the PSTN phone of the separate terminal, which is used to notify The PSTN phone call process ends.

The process of obtaining the on-demand media stream from the multimedia system by the SIP phone according to the RTSP URI address of the streaming server carried in the INFO message is similar to the foregoing embodiment, and will not be further described herein.

Referring to FIG. 5, it is a flowchart of Embodiment 5 of a method for multimedia on-demand according to the present invention. The application scenario of this embodiment is an IP Multimedia Subsystem (IMS) system, and the multimedia terminal is a converged terminal, and the media stream is requested by the service agent to the multimedia system.

The specific process of the multimedia on-demand includes:

Step 501: The convergence terminal sends a video on demand call request to the first P-CSCF, and carries the on-demand media stream information.

In this embodiment, the application server is a SIP server.

The first P-CSCF accesses the fused core terminal to the IMS core network.

Step 502: The first P-CSCF forwards the multimedia on-demand call request to the S-CSCF. Step 503: The S-CSCF forwards the multimedia on-demand call request to the SIP server. Step 504: The SIP server forwards the multimedia on-demand Call request to the S-CSCF;

Step 505: The S-CSCF forwards the multimedia on-demand call request to the second P-CSCF.

Step 506: The second P-CSCF forwards the multimedia on-demand call request to the service proxy. Step 507: The service proxy returns a response message of the multimedia on-demand call request to the second P-CSCF, and carries the media stream in the streaming media server. RTSP URI address;

The response message of the multimedia on-demand call request is a SIP 3XX message, such as a SIP 302 message. The SIP 3XX message generally supports the TEL URI/SIP URI. In this embodiment, the SIP 3XX message needs to carry the RTSP URI address of the media stream in the media stream server, so the URI address in the SIP 3XX message needs to be extended, so that the SIP 3XX message is also Support for RTSP URIs. The expansion can be performed as shown in the first embodiment.

Step 508: The second P-CSCF forwards the response message SIP of the multimedia on-demand call request. 302 to the S-CSCF;

Step 509: The S-CSCF forwards the response message of the multimedia on-demand call request to the SIP server.

Step 510: The SIP server forwards the response message SIP 302 of the multimedia on-demand call request to the S-CSCF.

Step 511: The S-CSCF forwards the SIP 302 message to the first P-CSCF.

Step 512: The first P-CSCF forwards the SIP 302 to the convergence terminal.

Step 513: The converged terminal returns an ACK response message to the first P-CSCF.

Step 514: The first P-CSCF forwards an ACK response message to the S-CSCF.

Step 515: The S-CSCF forwards an ACK response message to the SIP server.

Step 516: The SIP server returns an ACK message to the S-CSCF.

Step 517: The S-CSCF forwards the ACK message to the second P-CSCF.

Step 518: The second P-CSCF forwards the ACK message to the service agent.

The process of obtaining the on-demand media stream from the multimedia system according to the RTSP URI address of the streaming media server carried in the SIP 302 message is similar to the foregoing embodiment, and is not further described herein.

Please refer to FIG. 6, which is a structural diagram of Embodiment 1 of a system for multimedia on demand according to the present invention. The multimedia on-demand system includes: a multimedia terminal 61, an application server 62, and a multimedia system 63.

The multimedia terminal 61 is configured to send a multimedia on-demand call request to the application server 62, and obtain the address corresponding to the on-demand media stream carried in the response message of the multimedia on-demand call request returned by the application server 62, and obtain the content from the multimedia system 63. On-demand media streaming.

The application server 62 is configured to forward the multimedia on-demand call request sent by the multimedia terminal 61, and forward the response message of the received multimedia on-demand call request to the multimedia terminal 61, where the response message of the multimedia on-demand call request is carried in The address corresponding to the media stream on demand.

The multimedia system 63 is configured to receive a multimedia on-demand call request forwarded by the application server 62, and return a response message of the multimedia on-demand call request carrying the address corresponding to the on-demand media stream according to the multimedia on-demand call request. The application server 62 is connected to the multimedia terminal 61, and the multimedia terminal 61 is provided with the media stream on demand by the multimedia terminal 61.

The multimedia terminal 61 can be a converged terminal, a separate terminal, and a pure SIP terminal, and includes: The transmitting unit 611, the receiving unit 612, the address obtaining unit 613, and the media stream acquiring unit 614.

The sending unit 611 is configured to send a multimedia on-demand call request to the application server 62. The receiving unit 612 is configured to receive a response message of the multimedia on-demand call request forwarded by the application server 62, where the multimedia on-demand call request is The response message carries an address corresponding to the media stream of the on-demand; the address obtaining unit 613 is configured to obtain the address of the multimedia system 63, and provide the obtained address of the multimedia system 63 to the sending unit 611, and the sending unit 611 is configured by the sending unit 611. Obtaining the address of the media system 63, and sending a request for obtaining the media stream of the on-demand to the multimedia system 63; the media stream obtaining unit 614, according to the address corresponding to the media stream of the on-demand received by the receiving unit 612, to the multimedia system 63 A request to obtain an on-demand media stream is sent, and an on-demand media stream is obtained.

The multimedia system 63 includes: a receiving unit 631, a sending unit 632, and a media stream providing unit.

634.

The receiving unit 631 is configured to receive a multimedia on-demand call request forwarded by the application server 62. The sending unit 632 is configured to return the multimedia on-demand information according to the on-demand media stream information carried by the multimedia on-demand call request received by the receiving unit 631. The response message of the call request is sent to the application server 62, and the response message of the call request of the multimedia on-demand carries an address corresponding to the media stream of the on-demand; the media stream providing unit 634 is configured to obtain the media on demand according to the multimedia terminal 61. The streaming request provides an on-demand media stream to the multimedia terminal 61.

Please refer to FIG. 7, which is a structural diagram of Embodiment 2 of a system for multimedia on demand according to the present invention. The multimedia on-demand system includes: a multimedia terminal 71, an application server 72, a service agent 73, and a multimedia system 74.

The multimedia terminal 71 is configured to send a multimedia on-demand call request to the application server 72, and obtain the address corresponding to the on-demand media stream carried in the response message of the multimedia on-demand call request returned by the application server 72, and obtain the information from the multimedia system 74. On-demand media streaming.

The application server 72 is configured to forward the multimedia on-demand call request sent by the multimedia terminal 71, and forward the response message of the received multimedia on-demand call request to the multimedia terminal 71, where the response message of the multimedia on-demand call request is carried in The address corresponding to the media stream on demand.

The service agent 73 is configured to receive a multimedia on-demand call request forwarded by the application server 72, and return a response of the multimedia on-demand call request carrying the address corresponding to the multi-on-demand media stream according to the multimedia on-demand call request. Message to the application server 72; The multimedia system 74 is configured to provide the multimedia terminal 71 with the media stream that the multimedia terminal 71 requests.

The multimedia terminal 71 may be a converged terminal, a separate terminal, or a pure SIP terminal, and includes: a sending unit 711, a receiving unit 712, an address obtaining unit 713, and a media stream acquiring unit 714.

The sending unit 711 is configured to send a multimedia on-demand call request to the application server, and the receiving unit 712 is configured to receive a response message of the multimedia on-demand call request forwarded by the application server, and the response message of the multimedia on-demand call request The address corresponding to the media stream of the on-demand media is used to obtain the address of the multimedia system 74, and the obtained address of the multimedia system is provided to the sending unit 711, and the sending unit 711 is configured according to the obtained media system. Addressing, sending a request for obtaining the media stream of the on-demand to the multimedia system 74; the media stream obtaining unit 714 is configured to carry, according to the response message of the multimedia on-demand call request received by the receiving unit 712, the media stream corresponding to the on-demand media stream The address, sends a request to the multimedia system 74 to obtain the on-demand media stream, and obtains the on-demand media stream.

The service agent 73 includes: a receiving unit 731, a storage unit 733, a query unit 734, and a sending unit 735.

The receiving unit 731 is configured to receive a multimedia on-demand call request forwarded by the application server 72, where the multimedia on-demand call request carries the on-demand media stream information, and the storage unit 733 is configured to store the correspondence between the media stream information and the media stream address. The query unit 734 queries the storage unit 733 according to the media stream information of the on-demand call in the call request of the multimedia on-demand received by the receiving unit 731, and obtains a media stream address corresponding to the media stream information; 735 is configured to send a response message of the multimedia on-demand call request to the application server 72, and carry the address of the media stream obtained by the query unit 734.

A person skilled in the art can understand that all or part of the steps carried by the method of the foregoing embodiment can be completed by a program to instruct related hardware, and the program can be stored in a computer readable storage medium. , including one or a combination of the steps of the method embodiments.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. The integrated module is implemented as a software functional module and as a standalone product It can also be stored on a computer readable storage medium when it is sold or used.

The above-mentioned storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

The method and system for multimedia on-demand, the multimedia terminal, the multimedia terminal, the multimedia system and the service agent provided by the embodiments of the present invention can obtain the address of the on-demand media stream by initiating a multimedia on-demand call request, and according to the obtained media stream address, from the multimedia The system obtains the on-demand media stream, thereby implementing multimedia on-demand by initiating a multimedia on-demand call request.

The above description of the method and system for multimedia on-demand provided by the present invention and the multimedia terminal are only used to help understand the technical solution disclosed by the present invention. Meanwhile, for those skilled in the art, according to the present invention, The scope of the present invention is not limited by the scope of the present invention.

Claims

Rights request

A method for multimedia on-demand, characterized in that it comprises:

Sending a multimedia on-demand call request to the application server, where the multimedia on-demand call request carries the on-demand media stream information;

And receiving, by the application server, a response message of the multimedia on-demand call request, where the response message of the multimedia-on-demand call request carries an address corresponding to the on-demand media stream;

Obtaining an on-demand media stream according to an address corresponding to the on-demand media stream carried in the response message of the multimedia on-demand call request.

The method according to claim 1, wherein the sending the request for the multimedia on-demand call to the application server further comprises:

The application server routes the multimedia on-demand call request to the multimedia system;

The multimedia system carries the on-demand media stream information according to the multimedia on-demand call request, and returns a response message of the multimedia on-demand call request to the application server, where the response message carries an address corresponding to the on-demand media stream.

The multimedia on-demand method according to claim 2, wherein the multimedia on-demand call request comprises a multimedia on-demand access code, and the application server routes the multimedia on-demand call request to a multimedia system. The process includes:

The application server translates the multimedia on-demand access code into a call address of the multimedia system; the application server routes the multimedia on-demand call request to the multimedia system according to the call address of the multimedia system.

The method of the multimedia on-demand according to claim 1, wherein the sending the request for the multimedia on-demand call to the application server further comprises:

The application server routes the multimedia on-demand call request to the service agent;

The service agent carries the on-demand media stream information according to the multimedia on-demand call request, and returns a response message of the multimedia on-demand call request to the application server, where the response message carries an address corresponding to the on-demand media stream.

The method for the multimedia on-demand according to claim 4, wherein the service agent returns a response message of the multimedia on-demand call request to the application server before:

The service agent according to the on-demand media stream message carried in the multimedia on-demand call request Information, query the correspondence between the media stream information and the media stream address, and obtain an address corresponding to the on-demand media stream.

The method for multimedia on-demand according to claim 1, wherein the sending the request for the multimedia on-demand call to the application server comprises:

Obtain the address of the multimedia system;

Establishing a connection with the multimedia system based on the address of the multimedia system.

The method according to claim 1, wherein the specific process of obtaining the media stream of the on-demand according to the address corresponding to the media stream of the on-demand media carried in the response message of the call request of the multimedia on-demand includes:

And sending a real-time streaming protocol RTSP connection request to the multimedia system according to the address corresponding to the on-demand media stream carried in the response message of the multimedia on-demand call request;

Receiving a response message that the RTSP connection returned by the multimedia system is successful;

Sending a request for obtaining a media stream of the on-demand to the multimedia system;

Receiving a response message of the media stream request for obtaining the on-demand returned by the multimedia system; and receiving the on-demand media stream from the multimedia system.

The method according to claim 1, wherein the response message of the multimedia on-demand call request is an extended SIP message, and the SIP message supports an RTSP URI or a hypertext transfer protocol HTTP URI.

The multimedia on-demand method according to any one of claims 1 to 8, wherein the multimedia terminal is a converged terminal or a pure SIP terminal.

The method of multimedia on-demand according to any one of claims 1 to 8, wherein the multimedia terminal is a separate terminal.

The method for the multimedia on-demand according to claim 10, wherein the receiving the response message of the multimedia on-demand call request returned by the application server further comprises:

The application server queries the external database to obtain the address of the SIP phone bound to the terminal PSTN, and encapsulates the URI address of the streaming media server and sends the URI address to the SIP phone.

The multimedia on-demand method according to any one of claims 1 to 8, wherein the multimedia system is a streaming media server or a network server.

13. A system for multimedia on demand, characterized in that it comprises: a multimedia terminal, configured to send a multimedia on-demand call request, where the call request carries the on-demand media stream information, and obtains the on-demand according to the address corresponding to the on-demand media stream carried in the response message of the returned multimedia-on-demand call request Media stream

An application server, configured to forward a multimedia on-demand call request sent by the multimedia terminal to the multimedia system, and forward a response message of the multimedia on-demand call request received from the multimedia system to the multimedia terminal, where the multimedia on-demand call request response message is sent Carrying an address corresponding to the media stream on demand;

a multimedia system, configured to receive a multimedia on-demand call request forwarded by the application server, and return a response message of the multimedia on-demand call request carrying the address corresponding to the on-demand media stream to the application server according to the multimedia on-demand call request, and Providing the multimedia terminal with the media stream on demand by the multimedia terminal.

The multimedia on-demand system according to claim 13, wherein the multimedia terminal comprises:

a sending unit, configured to send a multimedia on-demand call request to the application server, where the call request carries the on-demand media stream information;

a receiving unit, configured to receive a response message of a multimedia on-demand call request forwarded by the application server, where the response message of the multimedia on-demand call request carries an address corresponding to the on-demand media stream;

The media stream obtaining unit is configured to send, according to the address corresponding to the on-demand media stream received by the receiving unit, a request for acquiring the media stream of the on-demand to the multimedia system, and acquire the media stream of the on-demand.

The multimedia on-demand system according to claim 14, wherein the multimedia terminal further comprises:

The address obtaining unit is configured to obtain an address of the multimedia system, and provide the obtained address of the multimedia system to the sending unit, and the sending unit sends a request for acquiring the media stream of the on-demand to the multimedia system according to the obtained address of the media system.

16. The system of multimedia on demand according to claim 15, wherein the multimedia system comprises:

a receiving unit, configured to receive a multimedia on-demand call request forwarded by the application server, and carry the on-demand media stream information; a sending unit, configured to return a response message of the multimedia on-demand call request to the application server according to the on-demand media stream information carried by the multimedia on-demand call request received by the receiving unit, where the response message of the multimedia on-demand call request is carried in The address corresponding to the media stream on demand;

17. A multimedia on-demand system, comprising:

a multimedia terminal, configured to send a multimedia on-demand call request, and obtain an on-demand media stream according to an address corresponding to the on-demand media stream carried in the response message of the returned multimedia on-demand call request;

An application server, configured to forward a multimedia on-demand call request sent by the multimedia terminal to the service agent, and forward a response message of the multimedia on-demand call request received from the multimedia system to the multimedia terminal, where the multimedia on-demand call request response message is sent Carrying an address corresponding to the media stream on demand;

a service agent, configured to receive a multimedia on-demand call request forwarded by the application server, and return a multimedia on-demand carrying an address corresponding to the on-demand media stream according to the on-demand media stream information carried by the multimedia on-demand call request The response message of the call request to the application server;

18. The system according to claim 17, wherein the service agent comprises:

The multimedia on-demand system according to claim 18, wherein the multimedia terminal comprises:

a sending unit, configured to send a multimedia on-demand call request to the application server; a receiving unit, configured to receive a response message of the multimedia on-demand call request forwarded by the application server, where the response message of the multimedia on-demand call request carries an address corresponding to the on-demand media stream;

a media stream obtaining unit, configured to send, according to an address corresponding to the media stream of the on-demand media stream, a response message of the multimedia on-demand call request received by the receiving unit, to send a request for acquiring the media stream of the on-demand to the multimedia system, and obtain the media on demand flow.

The multimedia on-demand system according to claim 19, wherein the multimedia terminal further comprises:

The address obtaining unit is configured to obtain an address of the multimedia system, and provide the acquired address of the multimedia system to the sending unit, so that the sending unit sends the multimedia on-demand call request to the multimedia system according to the obtained address of the media system.

The multimedia on-demand system according to claim 13, wherein the multimedia terminal is a converged terminal or a pure SIP terminal.

22. The system of multimedia on demand according to claim 13, wherein the multimedia terminal is a separate terminal.

23. The system of multimedia on demand according to claim 13, wherein the multimedia system is a streaming media server or a network server.

24. A multimedia terminal, comprising:

a sending unit, configured to send a multimedia on-demand call request;

The multimedia terminal according to claim 24, wherein the multimedia terminal further comprises:

26. A multimedia system, comprising: a receiving unit, configured to receive a multimedia on-demand call request forwarded by the application server, and carry the on-demand media stream information;

27. A business agent, characterized by comprising: