WO2009030171A1

WO2009030171A1 - Media service implementing method and communication system and associated devices

Info

Publication number: WO2009030171A1
Application number: PCT/CN2008/072217
Authority: WO
Inventors: Xiao Wang; Yuxia Zhang; Peili Xu; Xiaosong Lei
Original assignee: Huawei Technologies Co, .Ltd.
Priority date: 2007-08-31
Filing date: 2008-08-29
Publication date: 2009-03-12
Also published as: CN101378391B; CN101378391A

Abstract

A media service implementing method and a communication system and associated devices can combine many different media services in order to satisfy the needs of the media service. Wherein, the method comprises: after a control channel is built between a media resource client end MRC (301) and a media resource server MRS (303), a combination function entity (304) assembles the media service control message sent from MRC (301); the combination function entity (304) transfers the assembled media service control message to the MRS (303) through the media control channel, and the assembled media service control message is used for indicating the MRS (303) to provide media services which the MRC (301) needed to the MRC (301) according to the assembled media service control message.

Description

Media service implementation method and communication system and related equipment The present application claims to be filed on August 31, 2007 by the Chinese Patent Office, the application number is 200710145739.1, and the invention name is "Media Business Implementation Method and Communication System and Related Equipment" Priority is hereby incorporated by reference in its entirety. Technical field

The present invention relates to the field of communications technologies, and in particular, to a media service implementation method, a communication system, and related devices. Background technique

A method for implementing a media service is provided in the prior art, specifically: a media resource broker (MRB, Media Resource Broker) applied to media service control is defined in the prior art, and an application server in the media service system is solved. The problem of the media server's collection of media resource server information with media service capabilities and the provision of appropriate media resource server information to the media resource client in a one-to-many and many-to-many scenario.

In the process of implementing the present invention, the inventors have found that the prior art has the following disadvantages: In practical applications, it is sometimes necessary to simultaneously apply multiple media services in one media service, that is, multiple media resource servers (MRS, Media Resource Server) provides different media services at the same time. The prior art does not disclose the media service implementation method in this case. Summary of the invention

The embodiments of the present invention provide a media service implementation method, a communication system, and related devices, which can combine different media services to meet the requirements of the media service.

The media service implementation method provided by the embodiment of the present invention includes: a media resource client After the media control channel is established between the MRC and the media resource server MRS, the combined function entity combines the media service control messages sent by the MRC; the combined function entity passes the combined media service control message through the media control channel. Transmitted to the MRS, the combined media service control message is used to instruct the MRS to provide a media service required by the MRC according to the combined media service control message.

The communication system provided by the embodiment of the present invention includes: an MRC, configured to send a media service control message, and establish a media control channel; an MRS, configured to establish a media control channel with the MRC, and provide a media service according to the media service control message; And a method for combining the media service control message, providing a media service control message to the MRS, receiving a feedback result of the MRS on the combined media service control message, and sending the feedback result to the MRC.

The combined function entity provided by the embodiment of the present invention includes: a channel establishing unit, configured to establish a media control channel for transmitting a media service control message; and a control message processing unit, configured to parse, execute, and construct the received media service control message. a receiving unit, configured to receive a feedback result of the combined media service control message by the MRS, and a sending unit, configured to send the combined media service control message to the MRS according to a result of the execution of the media service control message by the control message processing unit, Send MRS feedback results to the MRC.

The media resource client provided by the embodiment of the present invention includes: a request message generating unit, configured to generate a media service request message; a control message generating unit, configured to generate a media service control message; and a control channel establishing unit, configured to establish a medium with the MRS a control function unit, configured to combine the media service control messages generated by the control message generating unit, and send the combined media service control message to the MRS through the media control channel established by the control channel establishing unit, and receive the MRS feedback message. .

The MRB provided by the embodiment of the present invention includes: a request message receiving unit, configured to receive a media service request message sent by the MRC, and a query unit, configured to specify, according to the media service request message sent by the MRC, an MRS that provides the media service; Establishing a unit, configured to establish a media control channel with the specified MRS; The energy unit is configured to receive the media service control message sent by the MRC, combine the media service control message, and send the combined media service control message to the MRS through the media control channel established by the control channel establishing unit, and receive the feedback of the MRS. The message forwards the feedback message of the MRS to the MRC.

It can be seen from the foregoing technical solutions that the embodiments of the present invention have the following advantages: In the embodiment of the present invention, the combined function entity performs combined control on the media service provided by the MRS through the media control channel, that is, the media service control message sent by the MRC is combined. Therefore, MRS can provide a variety of media service services to MRC according to the requirements of MRC, thus meeting the needs of media services. DRAWINGS

1 is a schematic diagram of a first embodiment of a communication system according to an embodiment of the present invention;

2 is a schematic diagram of a second embodiment of a communication system according to an embodiment of the present invention;

3 is a schematic diagram of a third embodiment of a communication system according to an embodiment of the present invention;

4 is a schematic diagram of an embodiment of a combined functional entity according to an embodiment of the present invention;

5 is a schematic diagram of a first embodiment of a method for implementing a media service according to an embodiment of the present invention; FIG. 6 is a schematic diagram of a second embodiment of a method for implementing a media service according to an embodiment of the present invention; FIG. 8 is a schematic diagram of an embodiment of a media resource client according to an embodiment of the present invention; FIG. 9 is a schematic diagram of an embodiment of an MRB according to an embodiment of the present invention. detailed description

In the embodiment of the present invention, the combined function entity is used to perform combined control on the media service provided by the MRS, and the media service control message sent by the media resource client (MRC, Media Resource Client) controls the media service provided by the MRS, so that MRS can provide a variety of media services to MRC according to MRC requirements to meet the needs of media services. The following is based on the specific analysis of the location of the combined functional entities, specifically the following:

First, the combined functional entity is located in the MRC:

Referring to FIG. 1, a first embodiment of a communication system in an embodiment of the present invention includes: a media resource client 101, configured to send a media service request message, send a media service control message to the combined function entity 104, and establish a media control channel;

The MRB 102 is configured to receive a media service request message sent by the media resource client 101, specify a media resource server 103 according to the required media service, and establish a signaling interaction. The media resource server 103 is configured to establish media control with the media resource client 101. Channel, providing media services;

The combined function entity 104 is configured to receive and combine the media service control message sent by the media resource client 101, provide the media service control message to the media resource server 103, and receive feedback from the media resource server 103 on the combined media service control message. As a result, the feedback result is sent to the media resource client 101.

In this embodiment, the combined function entity 104 is located in the media resource client 101, and the specific operation process is:

The media resource client 101 sends a media service request message, the MRB 102 determines the required media resource service, specifies the media resource server 103 that provides the required resource service, and the MRB interacts with the specified media resource server 103 to initiate a session initiation protocol (SIP, Session). Initialization Protocol). As shown in FIG. 1, the MRB 102 establishes a media session SIP signaling channel with the media resource client 101, and also establishes a media session SIP signaling channel with a plurality of media resource servers 103. The media resource client 101 establishes a media control channel with the plurality of media resource servers 103 according to the Session Description Protocol (SDP). The combined function entity 104 included in the media resource client 101 can deliver media service control messages to the plurality of media resource servers 103 through the media control channel, and the media resource servers 103 provide media services to the media resource client 101.

Second, the combined functional entity is located in the MRB:

Referring to FIG. 2, a second embodiment of a communication system in an embodiment of the present invention includes: a media resource client 201, configured to send a media service request message, send a media service control message, and establish a media control channel;

The MRB 202 is configured to receive a media service request message sent by the media resource client 201, determine a service required by the media resource client 201 according to the media service request message, specify the media resource server 203, and establish a signaling interaction;

a media resource server 203, configured to establish a media control channel with the media resource client 201 and the MRB 202;

The combined function entity 204 is configured to receive and combine the media service control message sent by the media resource client 201, send the combined media service control message to the media resource server 203, and receive the media resource server 203 to control the combined media service. The feedback result of the message is sent to the media resource client 201.

In this embodiment, the combined functional entity 204 is located in the MRB 202, and the specific operation process is:

The MRB 202 establishes a media session SIP signaling channel with the media resource client 201 and the plurality of media resource servers 203, respectively, and the MRB 202 also establishes a media control channel with the media resource client 201 and the plurality of media resource servers 203. The media resource client 201 sends a media service request message, the MRB 202 receives the request message, parses the media service request message, specifies the media resource server that provides the required resource service, and the MRB 202 interacts with the designated media resource server 203 for SIP signaling. After the channel is established, the media resource client 201 sends a media service control message, and the combined function entity 204 in the MRB 202 delivers a media service control message to the plurality of media resource servers 203, and the media resource server 203 provides the media service to the media resource client 201. .

Third, the combined functional entities exist independently:

Referring to FIG. 3, a third embodiment of the communication system in the embodiment of the present invention includes: a media resource client 301, configured to send a media service request message, send a media service control message, and establish a media control channel;

The MRB 302 is configured to receive a media service request message sent by the media resource client 301.

a media resource server 303 for use with the media resource client 301 and the MRB 302 Establish a media control channel between them;

The combined function entity 304 is configured to receive and combine the media service control message sent by the media resource client 301, send the combined media service control message to the media resource server 303, and receive the media resource server 303 to control the combined media service. The feedback result of the message is sent to the media resource client 301.

In this embodiment, the combined functional entity 304 exists independently, and the specific operational flow is:

The MRB 302 establishes a media session SIP signaling channel with the media resource client 301 and the plurality of media resource servers 303. The combined function entity 304 establishes a media control channel with the media resource client 301 and the plurality of media resource servers 303 under the control of the MRB 302. After the channel is established, the media resource client 301 sends a media service control message, and the combined function entity 304 delivers the media service control message to the plurality of media resource servers 303, and the media resource server 303 provides the media resource client 301 with the media service.

The following is a detailed description of the combined functional entity in the embodiment of the present invention. Referring to FIG. 4, the embodiment of the combined functional entity in the embodiment of the present invention includes:

a channel establishing unit 401, configured to establish a media control channel for transmitting a media service control message;

Control message processing unit 402, configured to parse, execute, and construct the received media service control message;

The receiving unit 403 is configured to receive, by the MRS, a feedback result of the combined media service control message;

The sending unit 404 is configured to send the combined media service control message to the MRS according to the result of the execution of the media service control message by the control message processing unit, and send the MRS feedback result to the MRC.

The sending unit 404 includes at least one of the following units:

The message sending unit 4041, if the control message processing unit 402 constructs the received media service control message to obtain a new media service control message, the message sending unit 4041 is configured to send the reconstructed media service control message to the MRS;

The command sending unit 4042, if the control message processing unit 402 performs the received media service control message to obtain the media service control command, the command sending unit 4042 is configured to send, to the MRS, a media service control command generated after the control message processing unit executes the media service control message.

The media service implementation method in the embodiment of the present invention is described in detail below. In the following embodiments, the media client is required to request a "voice text message" service, which includes media playback service processing and media recording service processing, according to service requirements. The client performs media control on both media service processing. It is also classified according to the location of the combined functional entities, which can be divided into the following three categories:

First, the combined functional entity location MRB:

Referring to FIG. 5, a first embodiment of a method for implementing a media service according to an embodiment of the present invention includes: 501. An MRC requests a media service from an MRB.

The request message INVITE carries an SDP offer, and the SDP offer describes a media capability attribute of the user terminal (for example, "2 MS-line", which represents two media popular) and a property of the media resource client to establish a media control channel (for example, " 1 MCc-line", representing a media control line).

In this embodiment, an example of a media attribute message in an SDP offer is as follows:

m=audio ue_portl RTP/AVP 0

a=rtpmap: 0 pcmu/8000

a=recvonly

a=label: 1

m=audio ue_port2 RTP/AVP 0

a=rtpmap :0 pcmu/8000

a=sendonly

a=label: 2

m=application mrc controlport TCP/mediacontrlproto

a=setup: active

a=connection: new

The label line in the message identifies the corresponding media stream, where the media control line can be associated with or not.

502. The MRB queries the corresponding media service request message sent by the MRC. MRS serves MRC;

In this embodiment, it is assumed that the MRB queries MRS1 and MRS2 as MRC services.

503-504, the MRB sends an invitation message to the corresponding MRS;

The MRB receives the media service request, parses the media service request, and specifies the MRS1 and MRS2 that provide the required services (playing service and recording service), and then sends a service request to the two servers respectively. The request includes the SDP offer, and the MRB reconstructs the received SDP offer, which includes the playback media capability attribute and the recording medium capability attribute supported by the user terminal and the corresponding media control attribute allocated by the MRB.

The SDP offer media attribute message instances in this step are as follows:

m=audio ue_portl RTP/AVP 0

a=rtpmap: 0 pcmu/8000

a=recvonly

a=label: 1

m=application mrb controlportl TCP/mediacontrlproto

a=setup: active

a=connection: new m=audio ue_port2 RTP/AVP 0

a=rtpmap: 0 pcmu/8000

a=sendonly

a=label: 2

m=application mrb_controlport2 TCP/mediacontrlproto

a=setup: active

a=connection: new

505-506, feedback 200 OK message;

MRS1 and MRS2 receive the service request and allocate media stream resources and media control resources to the requested service, and reply to the requested response message, including SDP answer. The SDP answer describes the media stream capability attributes and media control attributes provided by the MRS.

In this embodiment, the response message replied by MRS1 and MRS2 is SDP answer medium. The body attribute message instance descriptions are as follows:

m=audio mrsl_portl RTP/AVP 0

a=rtpmap: 0 pcmu/8000

a=sendonly

a=lable: 1

m=audio mrs 1 controlport 1 TCP/ mediacontrlproto

a=setup: passive

a=connection: new m=audio mrs2_port2 RTP/AVP 0

a=rtpmap: 0 pcmu/8000

a=recvonly

a=lable: 2

m=audio mrs2_controlport2 TCP/ mediacontrlproto

a=setup: passive

a=connection: new

507, feedback 200 OK to the MRC;

After receiving the response messages from the two resource servers, the MRB responds to the MRC with a response message and constructs a new SDP answer to be included in the response message. The SDP answer describes the media capability attributes provided by the two resource servers and the media control attributes assigned by the MRB.

In this embodiment, an instance of the media attribute message in the SDP answer is described as follows: m=audio mrsl_portl RTP/AVP 0

a=rtpmap: 0 pcmu/8000

a=sendonly

a=lable: 1

m=audio mrs2_port2 RTP/AVP 0

a=rtpmap: 0 pcmu/8000

a=recvonly

a=lable: 2 m=audio mrb controlport TCP/ mediacontrlproto

a=setup: passive

a=connection: new

508-510, the MRC feeds back an acknowledgement message to the MRB, and the MRB sends a confirmation message to the corresponding MRS.

In this embodiment, after the media stream channel and the media control channel are completed in the media service combination, the media resource client may send a media service control message to control the media resource server to provide the media service.

In this embodiment, the initial establishment process of the media service combination specifically includes: the MRC sends a media service request message, where the request message includes an SDP message that the service system establishes a media stream channel connection, and may also include an SDP that establishes a media control channel connection by the service system. The message, the MRB receives and parses the media service request message, specifies the media resource server MRS that provides the service, and establishes a SIP Dialog with each of the MRSs, interacts with the media service request message, performs media capability negotiation, and completes the media capability negotiation, meaning that the media stream channel With the establishment of the media control channel, the initial establishment of the media service composition is completed.

Among them, the negotiation of media capabilities (including negotiation of media stream channels and media control channels) may involve multiple SIP and SDP interactions, and the establishment of media stream channels and media control channels is not chronological.

After the media service combination is initially established, the MRC establishes a media service control relationship with several MRSs through the combined function entity in the MRB, performs media service control on several MRSs through the combined function entity in the MRB, and several MRSs provide media services. The specific process includes:

1. The MRC sends a media service control message, which may carry the entire media service control script message.

2. After the MRB receives the media service control message of the MRC, the combined function entity in the MRB parses the message to perform the corresponding operation. When the control message contains a service control script or script location indication information, the combined functional entity in the MRB obtains the script from the Resource Server; when the message includes the script execution engine indication, the combined functional entity in the MRB will be from the Resource Server. Get the script execution engine on. 3. The MRB receives the media service control message of the MRC, and learns from the content carried in the message that the MRS needs to provide the media service. These MRSs are the MRSs previously specified by the media service request message sent by the MRC. When the media service control message is carried in the media service control message, the combined function entity in the MRB can execute the script and deliver the media service command to the MRS that provides the corresponding media service; the combined function entity in the MRB can also execute the script and reconstruct The media service control script processed by the corresponding media service sends a corresponding media service control message to the MRS providing the corresponding service.

The following is a specific example to illustrate the combination of the combined function entity and the media service control message. In this embodiment, the case where the combined function entity is integrated into the MRB is taken as an example. It can be understood that the processing situation when the combined function entity is located at another location is as follows. Similarly, specific examples include:

1. The MRC sends a "voice message service" media service control message to the MRB: wherein the media service control message carries a "voice message service" media service script message. The script message may contain:

a, the contents of the entire script:

The indication includes the playback section program and the recording section program, indicating the relationship between the playback section program and the recording section program, indicating the playback section program and the recording section program execution timing.

b, playback section script:

Describe the properties of the playback script, such as playback elements, playback resources, playback time, playback events, etc., and may also include programs that transition from playback to recording.

Describe the relevant properties of the recording script, such as recording elements, recording events, recording save locations, and more.

2. The MRB receives the media service control message, parses the message, and sends a media service control message to the MRS:

In this embodiment, the MRB receives the media service control message including the script, and the processing of the specific MRB includes:

a. Analyze the content of the script, distinguish the meaning of the playback script segment and the meaning of the recording script segment, and clearly define the relationship between the playback script segment program and the recording segment script program;

b, MRB splits the original script and reconstructs it according to the media control protocol it supports a separate playback script and a separate recording script;

C. The MRB first sends a media service control message containing the playback script to the playback resource server according to the original script, and performs proxy control by the MRC;

d. The MRB sends a media service control message containing the recording script to the recording resource server according to the original script, and acts as a proxy for the MRC.

3. During playback or recording, the MRB Proxy MRC performs service control, which will deliver media service processing messages to the MRC.

The dynamic change of media service composition in this embodiment is mainly reflected in three aspects:

1. Add MRS or add media services provided by MRS:

When the media service composition system is initially established, the media service composition system can add new media resource services according to the media service requirements. This dynamic increase in media resource services consists of two situations:

A. Add a media resource server that provides new resource services;

After the MRC has a new media resource service request, the REINVITE message is sent to the MRB to request a renegotiation with the MRB, where the REINVITE message includes the modified content of the SDP, including the media stream attribute modification and the media control attribute modification in the SDP.

The MRB determines, according to the received REINVITE message, that the currently connected MRS cannot satisfy the media resource service requirement, and specifies a new MRS that can meet the media resource service requirement;

Re-consulting the media attributes with the MRC based on the media service attributes of the specified MRS;

After the media attribute renegotiation is completed, the media control channel between the MRB and the MRC and between the MRB and each MRS is re-established according to the renegotiation result.

B. Combine a new resource service from the MRS in the current combination.

After the MRC has a new media resource service request, the REINVITE message is sent to the MRB to request a renegotiation with the MRB, where the REINVITE message includes the modified content of the SDP, including the media stream attribute modification and the media control attribute modification in the SDP. The MRB specifies, according to the received REINVITE message, an MRS in the currently connected MRS that can satisfy the resource service requirement;

2. Deletion of MRS or deletion of media services provided by MRS:

When the media service composition is initially established, the media service composition system can delete or reduce the media resource service in the combination according to the media service requirements. There are also two situations:

A. Remove the MRS that provides each resource service from the current combined MRS. The message processing is also done by the MRC and MRB through the REINVITE request to renegotiate the media attributes.

B. Delete a media resource service from an MRS of the current combination. The message processing is also done by the MRC and MRB through the REINVITE request to renegotiate the media attributes.

3. Modify the properties provided by the resource service:

After the media service combination is initially established, the media service combination can modify the attributes provided by the existing media resource service, such as changing the media stream attribute between the MRS and the user terminal UE, and the media control attribute between the MRS and the uplink client. Message processing is also done by REINVITE requesting renegotiation of media attributes.

Second, the combined functional entity is located in the MRC:

Referring to FIG. 6, a second embodiment of a method for implementing a media service according to an embodiment of the present invention includes: 601. An MRC requests a media service from an MRB.

The request message carries the SDP offer, and the SDP offer describes the media capability attribute of the user terminal (for example, "2 MS-line", representing two media popular).

m=audio ue_portl RTP/AVP 0

a=rtpmap: 0 pcmu/8000

a=recvonly

m=audio ue_port2 RTP/AVP 0 a=rtpmap :0 pcmu/8000

a=sendonly

602. The MRB queries, according to the media service request message sent by the MRC, that the corresponding MRS is an MRC service.

603-604, the MRB sends an invitation message to the corresponding MRS;

The MRB receives the media service request, specifies MRS1 and MRS2 that provide the required services (playing service and recording service), and sends service requests to the two servers respectively. The request contains the SDP offer, which includes the playback media capability attribute and the recording media capability attribute supported by the user terminal.

In this embodiment, an SDP offer media attribute message instance is described as follows:

m=audio ue_portl RTP/AVP 0

a=rtpmap: 0 pcmu/8000

a=recvonly m=audio ue_port2 RTP/AVP 0

a=rtpmap: 0 pcmu/8000

a=sendonly

605-606, feedback 200 OK message;

In this embodiment, an example of a media attribute message is described as follows:

m=audio mrsl_portl RTP/AVP 0

a=rtpmap: 0 pcmu/8000

a=sendonly m=audio mrs2_port2 RTP/AVP 0

a=rtpmap: 0 pcmu/8000 a=recvonly

607, feedback 200 OK to the MRC;

c=IN IP4 202.114.118.100

a=rtpmap: 0 pcmu/8000

a=sendonly

m=audio mrs2_port2 RTP/AVP 0

c=IN IP4 202.114.118.101

a=rtpmap: 0 pcmu/8000

a=recvonly

608-610, the MRC feeds back an acknowledgement message to the MRB, and the MRB sends a confirmation message to the corresponding MRS;

611. Initiating a re-invitation request;

After receiving the response message, the MRC checks whether the "c" line in the SDP answer message body is the same. If the same client knows that the two media resources are from different servers, it is from the same server. When originating from different servers, the MRC sends a new media service request REINVITE, the request message carries an SDP offer, describes the media capability attributes of the user terminal (for example, "2 MS-line"), and the media resource client establishes a media control channel. Attributes (for example "2 MCc-line" for a media control line). When the result of the check is from the same server, there will only be "1 MCc-line".

In this embodiment, it is assumed that two media resources are from different servers, and an example of the SDP offer media attribute message is as follows:

m=audio ue_portl RTP/AVP 0

a=rtpmap: 0 pcmu/8000

a=recvonly a=label: 1

m=audio ue_port2 RTP/AVP 0

a=rtpmap: 0 pcmu/8000

a=sendonly

a=label: 2

m=application mrc controlportl TCP/mediacontrlproto

a=setup: active

a=connection: new

a=Clabel: 1

m=application mrc_controlport2 TCP/mediacontrlproto

a=setup: active

a=connection: new

a=Clabel: 2

The "label" and "Clabel" lines in the message represent the corresponding media pop and media control lines, respectively, and the numbers in "label" and "Clabel" are the same, indicating that the media stream is associated with the corresponding media control channel.

612-613, the MRB sends a re-invitation message to the corresponding MRS;

The MRB receives the media service request, and sends a service request to the previous two resource servers, where the request includes the SDP offer, and the playback media capability attribute and the recording media capability attribute and the corresponding media control attribute supported by the user terminal respectively.

In this embodiment, the media attribute message instances are respectively as follows:

m=audio ue_portl RTP/AVP 0

a=rtpmap: 0 pcmu/8000

a=recvonly

a=label: 1

m=application mrc controlportl TCP/mediacontrlproto

a=setup: active

a=connection: new

a=Clabel: 1 m=audio ue_port2 RTP/AVP 0

a=rtpmap: 0 pcmu/8000

a=sendonly

a=label: 2

m=application mrc_controlport2 TCP/mediacontrlproto

a=setup: active

a=connection: new

a=Clabel: 2

614-615, feedback 200OK message;

MRS1 and MRS2 respond to service requests, and the MRS not only allocates media stream resources for the requested service (which may be previously allocated) but also allocates media control resources. At this point, the media attribute message instances in the SDP answer are described as follows:

m=audio mrsl_portl RTP/AVP 0

a=rtpmap: 0 pcmu/8000

a=sendonly

a=lable: 1

m=audio mrsl controlportl TCP/mediacontrlproto

a=setup: passive

a=connection: new

a=Clabel: 1 m=audio mrs2_port2 RTP/AVP 0

a=rtpmap: 0 pcmu/8000

a=recvonly

a=lable: 2

m=audio mrs2_controlport2 TCP/mediacontrlproto

a=setup: passive

a=connection: new a=Clable: 2

616. Feeding 200 OK message to the MRC;

After receiving the response message from the two resource servers again, the MRB responds to the MRC with a response message and constructs a new SDP answer contained in the response message. The media attribute message instance in the SDP answer is described as follows:

m=audio mrsl_portl RTP/AVP 0

a=rtpmap: 0 pcmu/8000

a=sendonly

a=lable: 1

m=audio mrs2_port2 RTP/AVP 0

a=rtpmap: 0 pcmu/8000

a=recvonly

a=lable: 2

m=audio mrs 1 controlport 1 TCP/ mediacontrlproto

a=setup: passive

a=connection: new

a=Clabel: 1

m=audio mrs2_controlport2 TCP/ mediacontrlproto

a=setup: passive

a=connection: new

a=Clable: 2

617-619, the MRC feeds back an acknowledgement message to the MRB, and the MRB sends a confirmation message to the corresponding MRS.

After the media service combination is initially established, the combined functional entity in the MRC establishes a media service control relationship with several MRSs, performs media service control on several MRSs, and provides several media services to the MRS. The key processes in this process include:

The MRC sends media service control messages to several MRSs. The control message may carry a media service processing script message or command information. The combined function entity in the MRC needs to distinguish the meaning of the media service processing script processed by each MRS, the association relationship between each media service processing script, and the associated association. The timing at which different media services process script messages are executed.

Third, the combined functional entities exist independently:

Referring to FIG. 7, a third embodiment of a method for implementing a media service according to an embodiment of the present invention includes: 701. An MRC sends an INVITE message to a MRB to request a voice video media service. 702. Query an MRS that provides a service for the MRC.

The MRB receives the INVITE message sent by the MRC, queries the local media service resources, and decides to provide services for the MRC by MRS1 (providing voice service) and MRS2 (providing video service).

703-708, MRB constructs a new INVITE message to send to MRS1 and MRS2, receives the returned 200 OK, and sends an ACK confirmation message, and MRB establishes SIP Dialog 1 and SIP Dialog 2 with MRS1 and MRS2 respectively;

709-710, the MRB constructs a new SDP according to the SDP carried in the 200 OK returned by the MRS1 and the MRS2, sends the ACK to the MRC through the 200 OK, receives the ACK returned by the MRC, and establishes the SIP Dialog 3 with the MRC;

711-713, the MRB acts as a control node and sends an INVITE to the combined functional entity. Information, through the SDP request to establish three media control channels (MRC and combined functional entities, MRS1 and combined functional entities, MRS2 and combined functional entities), and carry the association relationship of three control channels in the INVITE message; MRB and combined functional entities Establish SIP Dialog 4;

714-716, the MRB sends a relNVITE message to the MRC, and negotiates to establish a control channel between the MRC and the combined functional entity Media Control Channel 1;

717-722, MRB sends relNVITE messages to MRS1 and MRS2 respectively, and negotiates the control channels Media Control Channel 2 and Media Control Channel 3 between MRS1 and MRS2 and the combined functional entities.

After the media service combination is initially established, the process of processing the media service control message is similar to the process in the first embodiment, and details are not described herein again.

In summary, in the embodiment of the present invention, the combined function entity controls the media service provided by the MRS through the media control channel, so that the MRS can provide multiple media services to the MRC according to the requirements of the MRC, that is, the combined functional entity pairs The media services provided by MRS are combined and controlled to meet the needs of the media business.

The MRC and MRB in the above embodiment are separately described below, please refer to 8, the MRC embodiment in the embodiment of the present invention includes:

a request message generating unit 801, configured to generate a media service request message;

a control message generating unit 802, configured to generate a media service control message;

The control channel establishing unit 803 is configured to establish a media control channel with the MRS, and the combining function unit 804 is configured to combine the media service control messages generated by the control message generating unit, and establish the combined media service control message by using the control channel establishing unit. The media control channel is sent to the MRS to receive the MRS feedback message.

Referring to FIG. 9, the MRB embodiment in the embodiment of the present invention includes:

a request message receiving unit 901, configured to receive a media service request message sent by the MRC;

The query unit 902 is configured to specify, according to the media service request message sent by the MRC, an MRS that provides the media service;

a second control channel establishing unit 903, configured to establish a media control channel with the specified MRS;

The second combination function unit 904 is configured to receive a media service control message sent by the MRC, combine the media service control message, and send the combined media service control message to the MRS by using a media control channel established by the control channel establishing unit. Receiving a feedback message of the MRS, and forwarding the feedback message of the MRS to the MRC.

It will be understood by those skilled in the art that all or part of the steps of implementing the foregoing embodiments may be performed by a program to instruct related hardware, and the program may be stored in a computer readable storage medium. The method includes the following steps: after establishing a media control channel between the media resource client MRC and the media resource server MRS,

The combined functional entity combines the media service control messages sent by the MRC; the combined functional entity transmits the combined media service control message to the MRS through the media control channel, the combined media service control message And used to instruct the MRS to provide a media service required by the MRC according to the combined media service control message.

Through the description of the above embodiments, those skilled in the art can clearly understand The invention can be implemented by hardware, or can be realized by means of software plus necessary general hardware platform. The technical solution of the present invention can be embodied in the form of a software product, and the software product can be stored in a non-easy The cryptographic storage medium (which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform various embodiments of the present invention. The method described.

The foregoing describes a media service implementation method, a communication system, and related equipment provided by the present invention. For those skilled in the art, according to the idea of the embodiment of the present invention, there will be a specific implementation manner and application scope. The details of the description are not to be construed as limiting the invention.

Claims

Rights request

A method for implementing a media service, characterized in that:

After the media resource client MRC establishes a media control channel with the media resource server MRS,

2. The method according to claim 1, wherein before the establishing the media control channel between the MRC and the MRS, the method comprises:

The media resource broker MRB receives the media service request message sent by the MRC; the MRB specifies the MRS providing the media service according to the received media service request message.

3. The method according to claim 2, wherein the combined function entity is placed in the MRC;

The method for establishing a media control channel between the MRC and the MRS includes:

The MRC initiates a media control channel setup request to the MRS; the MRS is specified by the MRB to the MRC;

The MRS establishes a response to the MRC feedback media control channel;

The step of combining the combined function entity to the media service control message sent by the MRC includes:

The combined function entity in the MRC receives the media service control message generated by the control message generating unit in the MRC;

The combined function entity combines the received media service control messages, and sends the combined media service control message to the MRS, where the media service control message includes the script information or command information of the MRS process. .

4. The method according to claim 2, wherein the combined functional entity is placed in the MRB; The method for establishing a media control channel between the MRC and the MRS includes:

The MRC establishes a media control channel with the MRB;

The MRB establishes a media control channel with the MRS;

The combined functional entity in the MRB parses the received media service control message from the MRC;

Obtaining a corresponding script or script execution engine indication from the resource server according to the result of the parsing;

The control information is sent to the MRS according to the script or script execution engine.

The method according to claim 4, wherein the step of transmitting the control information to the MRS according to the execution of the script or the script includes:

The combined function entity executes the script generation media service control command according to the script or the script execution engine instruction;

Sending the media service control command to the MRS.

The method according to claim 4, wherein the step of transmitting control information to the MRS according to the script or script execution engine indication comprises:

The combined function entity executes the script according to the script or script execution engine instruction; reconstructs a new media service control message according to the script execution result;

Sending the new media service control message to the MRS.

7. The method according to claim 2, wherein the combined function entity exists independently;

The steps of establishing a media control channel between the MRC and the MRS include:

The MRC establishes a media control channel between the combined functional entities;

The combined function entity establishes a media control channel with the MRS;

The combined functional entity solves the received media service control message from the MRC Obtaining a corresponding script or script execution engine indication from the resource server according to the result of the parsing;

The method according to claim 7, wherein the step of sending control information to the MRS according to the script or the execution engine indication comprises:

Sending the media service control command to the MRS.

9. The method according to claim 7, wherein the step of transmitting control information to the MRS according to the script or the execution information includes:

Sending the new media service control message to the MRS.

10. The method according to claim 1, wherein the step of establishing a media control channel between the MRC and the MRS comprises:

The MRB reassembles the media service based on the received new media service request.

The method according to claim 10, wherein the step of reassembling the media service by the MRB according to the received new media service request comprises:

The MRB receives a re-invitation request sent by the MRC and includes a specific media service type; and specifies an MRS that provides a required service according to the media service type;

Establishing a media control channel with the MRS designated to provide the required service;

Or

The MRB receives a re-invitation request sent by the MRC and includes a specific media service type; and queries an MRS in the current MRS that can provide the media service;

Updating a media control channel between the queried MRS capable of providing the media service.

The MRB receives a re-invitation request sent by the MRC that includes a specific media service type; Re-negotiating the media attribute according to the media service type; disconnecting the media control channel of the MRS corresponding to the media service type according to the negotiation result;

Or

The MRB receives a re-invitation request sent by the MRC and includes a specific media service type; and renegotiates the media attribute according to the media service type;

Updating the media control channel of the MRS corresponding to the media service type according to the negotiation result.

13. The method according to claim 10, wherein the step of reassembling the media service by the MRB according to the received new media service request comprises:

The MRB receives the re-invitation request sent by the MRC;

Performing media attribute renegotiation according to the re-invitation request;

Modify the media capability attribute of the current MRS to provide media services.

14. A communication system, comprising:

The MRC is configured to send a media service control message, establish a media control channel, and use an MRS to establish a media control channel with the MRC, and provide a media service according to the media service control message;

The combined function entity is configured to combine the media service control message, provide a media service control message to the MRS, receive a feedback result of the MRS on the combined media service control message, and send the feedback result to the MRC.

The communication system according to claim 14, wherein the communication system further comprises:

The MRB is configured to receive a media service request message sent by the MRC, specify a media resource server according to the required media service, and establish a signaling interaction.

16. The communication system according to claim 15, wherein the combined functional entity may be placed in the MRC, or may be placed in the MRB, or may exist independently.

17. A combined functional entity, comprising:

a channel establishing unit, configured to establish a media control pass for transmitting media service control messages a control message processing unit, configured to parse, execute, and construct the received media service control message;

a receiving unit, configured to receive, by the MRS, a feedback result of the combined media service control message;

And a sending unit, configured to send the combined media service control message to the MRS according to the result of the execution of the media service control message by the control message processing unit, and send the MRS feedback result to the MRC.

18. The combined functional entity according to claim 17, wherein the transmitting unit comprises at least one of the following units:

a message sending unit, configured to send the reconstructed media service control message to the MRS;

And a command sending unit, configured to send, to the MRS, a media service control command generated after the control message processing unit executes the media service control message.

19. A media resource client, characterized by comprising:

a request message generating unit, configured to generate a media service request message;

a control message generating unit, configured to generate a media service control message;

a control channel establishing unit, configured to establish a media control channel with the MRS;

The combined function unit is configured to combine the media service control messages generated by the control message generating unit, and send the combined media service control message to the MRS through the media control channel established by the control channel establishing unit to receive the MRS feedback message.

20. An MRB, comprising:

a request message receiving unit, configured to receive a media service request message sent by the MRC, and a query unit, configured to specify, according to the media service request message sent by the MRC, an MRS that provides the media service;

a second control channel establishing unit, configured to establish a media control channel with the specified MRS;

a second combination function unit, configured to receive a media service control message sent by the MRC, combine the media service control message, and send the combined media service control message to the MRS through the media control channel established by the control channel establishing unit, and receive MRS The feedback message forwards the feedback message of the MRS to the MRC.