CN101005367B - Medium stream transmission system and control method for medium stream transmission quality - Google Patents

Abstract

The invention discloses a media stream transmission system and a media stream transmission quality control method. The system includes a media stream sending network and a media transmission control unit; the media transmission control unit obtains the service information of the media stream, and after receiving the media transmission quality setting request of the media stream, sets the service information according to the service information and the request The service level adjustment policy of the media stream, and send a media transmission quality adjustment notice to the media stream sending network; the media stream sending network adjusts the service level of the media stream being transmitted by itself according to the notice, and adjusts the media stream according to the adjusted The class of service transports the media stream. The system and method of the present invention adjust the service level of the media stream according to the network conditions and user requirements, thereby improving user experience and enhancing the flexibility of network data transmission.

Description

A media stream transmission system and media stream transmission quality control method

technical field

The invention relates to the field of media transmission, in particular to a media stream transmission system and a quality control method for media stream transmission.

Background technique

With the development of broadband networks, the network can not only provide traditional voice services, but also support multimedia services of multiple media types such as audio, video, pictures and text. This multimedia service is combined with data services such as presence service (Presence), short message, web page (Web) browsing, positioning information, push service (Push), file sharing, etc., to meet various needs of users. For example, in terms of messaging services, there are instant messages, chat rooms, and multimedia short messages, etc.; in terms of video services, there are entertainment, multimedia information, and daily communication; Management and payment, etc.; in terms of games, there are single-player games, group games, etc.; in terms of positioning services, there are person-finding, guides, and alarms; in terms of personal assistants, there are address book, calendar, bookmark management, and file storage , event reminders, emails, and more.

Driven by the above applications, the 3GPP standard organization proposed an IP-based multimedia subsystem (IMS) architecture. The architecture uses a standardized open structure, can realize various multimedia applications, and provides users with more choices and richer network experience. FIG. 1 shows the composition structure of an existing media stream sending network, including a client terminal (Service Client) 101, one or more transmission nodes 102 and an application server (AS) 103. Wherein, the transit node refers to a series of routers, RNC, BSC, and SGSN.

When users use network services, they can choose different connections to carry different media streams. For example, according to the subscription information, a PDP context with a higher service level can be selected to bear voice services, and a connection with a lower service level can be used to implement web browsing. The service level is divided according to the quality of service (QoS). When an abnormal situation occurs, such as a temporary drop in transmission bandwidth caused by a change in air interface connection quality, the transmission network will take different measures for service data of different service levels, discard or cache lower-level data, and ensure the transmission of higher-level data. Generally, a PDP connection can only provide one service level. If the QoS requirement of the media stream carried on the connection changes, a QoS modification needs to be initiated to change the current service level.

In the existing network architecture, the service level cannot be directly provided for the media stream, but a certain service level can only be indirectly assigned to a certain media stream through the physical connection carrying the media stream. If a PDP context with a high service level is established, all media streams carried by the context are high service levels, and vice versa. Since the establishment of the connection precedes the business, and a connection can transmit different types of media streams, it is impossible to further distinguish the service levels of multiple different media streams on the same connection through the service level selected when the connection is established, that is, the service level cannot Flexible configuration based on media flow.

Contents of the invention

In view of this, the main purpose of the present invention is to provide a media stream transmission system, so that the service level of the media stream can be adjusted as required.

Another object of the present invention is to provide a method for controlling the quality of media stream transmission, which can adjust the quality of media stream transmission on the media stream sending network when data transmission is performed.

In order to achieve the above object, the technical solution of the present invention is specifically realized in the following way:

A media stream transmission system, the system includes a media stream sending network, and the system also includes a media transmission control unit;

The media transmission control unit obtains the service information of the media stream, and after receiving the media transmission quality setting request of the media stream, sets the service level adjustment policy of the media stream according to the service information and the request, and sends the media stream to the media stream The sending network issues a media transmission quality adjustment notice;

The media stream sending network adjusts the service level of the media stream it is transmitting according to the notification, and transmits the media stream according to the adjusted service level.

The system also includes an operator control unit, and the operator control unit sends a media transmission quality setting request to the media transmission control unit.

The media stream sending network includes a client terminal, a transmission node and an application server;

Then the media transmission control unit sends a media transmission quality adjustment notification to at least one of the client terminal, transmission node and application server.

The application server reports the service information of the media stream to the media transmission control unit when the service of the media stream is established.

The media transmission control unit obtains the service information of the media stream according to its own default settings.

A media stream transmission system, the system includes a media stream sending network, characterized in that the system also includes a media transmission control unit, a user control unit and a subscription database;

The media transmission control unit acquires the service information of the media stream, the user control unit sends a media transmission quality setting request to the media transmission control unit, and the media transmission control unit goes to the subscription database to perform contract verification according to the request, and when the verification passes Afterwards, according to the service information and the request, the service level adjustment strategy of the media stream is set, and a media transmission quality adjustment notice is sent to the media stream sending network;

The media stream sending network adjusts the service level of the media stream it is transmitting according to the notification, and transmits the media stream according to the adjusted service level.

The media stream sending network includes a client terminal, a transmission node and an application server;

Then the media transmission control unit sends a media transmission quality adjustment notification to at least one of the client terminal, transmission node and application server.

The client terminal and the user control unit are set on the same device, and the client terminal records the service information of the media stream when the service of the media stream is established;

Then the user control unit acquires the service information of the media stream from the client terminal, and reports it to the media transmission control unit.

The application server reports the service information of the media stream to the media transmission control unit when the service of the media stream is established.

The media transmission control unit obtains the service information of the media stream according to its own default settings.

A control method for media stream transmission quality, applied in a media stream transmission system, the system includes a media stream sending network and a media transmission control unit, the method includes the following steps:

a. The media transmission control unit obtains the service information of the media stream, and after receiving the media transmission quality setting request of the media stream, sets the service level adjustment strategy of the media stream according to the service information and the request;

b. The media transmission control unit sends a media transmission quality adjustment notice to the media stream sending network according to the adjustment policy set in step a, and after the media stream sending network receives the notice, it determines the service level of the media stream being transmitted by itself Adjustment is made, and the media stream is transmitted according to the adjusted service level.

The method for setting the service level adjustment strategy described in step a is:

a21. The operator control unit pre-sets the service level processing template, and sends it to the media transmission control unit through a media stream service level modification request;

a22, the media transmission control unit sets the service level adjustment strategy corresponding to the media stream according to the service information and the service level processing template, and judges whether the setting is successful, and if successful, then replies with a successful response, and executes step b; otherwise, the media transmission control unit sends to The operator control unit issues a rejection message, ending the process.

The setting method of the service level adjustment policy is specifically: the media transmission control unit allocates the corresponding MPLS label for the media flow according to the record of the service level processing template, or sets the ToS value of the IP packet.

The method for issuing the media transmission quality adjustment notification in step b is: the media transmission control unit sends the media transmission quality adjustment notification to at least one of the client terminal, transmission node and application server in the media stream sending network.

The method for obtaining the service information of the media stream described in step a is: the application server reports the service information of the media stream to the media transmission control unit when the service of the media stream is established;

Or, the media transmission control unit obtains the service information of the media stream according to its own default settings.

The service information of the media stream includes: IP address and port number for media stream transmission, service type and application server identification.

The media transmission quality adjustment notification is sent according to the SIP protocol or the H.248 protocol.

A method for controlling the quality of media stream transmission, applied in a media stream transmission system, the system includes a media stream transmission network, a media transmission control unit, a user control unit and a subscription database, the method includes the following steps:

a. The media transmission control unit acquires the service information of the media stream, the user control unit sends a media stream service level setting request to the media transmission control unit, and the media transmission control unit goes to the subscription database for contract verification according to the request, and after the verification is passed Setting the service level adjustment policy of the media stream according to the business information and the request;

b. The media transmission control unit sends a media transmission quality adjustment notice to the media stream sending network according to the adjustment policy set in step a, and after the media stream sending network receives the notice, it determines the service level of the media stream being transmitted by itself Adjustment is made, and the media stream is transmitted according to the adjusted service level.

The method for setting the service level adjustment strategy described in step a is:

a11. The user control unit sends a media stream service level setting request to the media transmission control unit, and the media transmission control unit performs legality authentication on the user control unit, and after passing the authentication, sends a service to the user control unit Grade processing template;

a12. The user control unit sets the service level of the corresponding media stream according to the options provided by the service level processing template, and sends the setting result to the media transmission control unit;

a13. If the media transmission control unit passes the contract verification to the subscription database, then according to the business information and the setting result described in step a12, set the service level adjustment strategy corresponding to the media stream, and reply a successful response to the user control unit, and then perform step b ; Otherwise, the media transmission control unit sends a rejection message to the user control unit, and ends the process.

The media stream service level setting request in step a11 is implemented using the SIP protocol, HTTP protocol, or XCAP protocol.

The setting method of the service level adjustment policy is specifically: the media transmission control unit allocates the corresponding MPLS label for the media flow according to the record of the service level processing template, or sets the ToS value of the IP packet.

The method for issuing the media transmission quality adjustment notification in step b is: the media transmission control unit sends the media transmission quality adjustment notification to at least one of the client terminal, transmission node and application server in the media stream sending network.

The client terminal and the user control unit are set on the same device, and the client terminal records the service information of the media stream when the service of the media stream is established;

Then, the method for acquiring the service information of the media stream in step a is: the user control unit acquires the service information of the media stream from the client terminal, and reports it to the media transmission control unit.

The service information of the media stream includes: IP address and port number for media stream transmission, service type and application server identification.

The media transmission quality adjustment notification is sent according to the SIP protocol or the H.248 protocol.

It can be seen from the above technical solutions that the media stream transmission system and media stream transmission quality control method of the present invention can adjust the media stream service level according to network conditions and user requirements. For example, when a user uses the connection provided by the PoC system to send PoC voice service and ftp service at the same time, if the ftp service is considered more important than the PoC voice service, the media stream sending network can be designated to ensure the sending of the ftp service first. The invention realizes the flexible configuration of the service level of the media stream service, ensures that important service data is treated preferentially by the network, thereby improving user experience and enhancing the flexibility of network data transmission.

Description of drawings

Fig. 1 is the composition structure of the media stream sending network in the prior art;

Fig. 2 is the constituent structure of media stream transmission system among the present invention;

Fig. 3 is the flow process that realizes media stream transmission quality control among the present invention;

Fig. 4 is the flow process that operator's control unit executes media flow quality setting in a preferred embodiment of the present invention;

Fig. 5 is a flowchart of the user control unit performing media stream quality setting in a preferred embodiment of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

What Fig. 2 shows is the composition structure of media stream transmission system among the present invention, and this system comprises media transmission control unit 201, operator control unit (Operator) 202, user control unit (User) 203, subscription database 204 and media stream sending network . Wherein, the media stream transmission network is used for media stream transmission, and its composition structure is the same as that of the prior art, specifically including a client terminal 101, one or more transmission nodes 102 and an application server 103, which will not be repeated here. The media transmission control unit 201 can be set independently, or can be integrated with the application server 103 in the same device, or can be realized by using an existing transmission node 102 .

The operator control unit 202 can be an HTTP operation page set by the operator for the manager, and the manager sends a media transmission quality setting request to the media transmission control unit 201 through the operator control unit 202, and the transmission of a certain media stream Quality can be set or modified.

After the media transmission control unit 201 receives the media transmission quality setting request for setting the transmission quality of the media stream, it sets the service level adjustment policy according to the service information of the media stream and the above request, and sends the media transmission quality to the media stream sending network. Adjust notifications.

The setting method of the service level adjustment policy is: divide the service level into the first level, the second level, etc., each level corresponds to a certain priority and QoS, and select a level for the media flow among the above levels.

Since the media stream sending network includes a client terminal 101, a transmission node 102, and an application server 103, the media transmission control unit 201 may issue a media transmission quality adjustment notification to at least one of the client terminal 101, the transmission node 102, and the application server 103, so as to Adjust the media streaming quality of the corresponding segment network.

The media stream sending network adjusts the service level of the media stream being transmitted by itself according to the notification, and transmits the media stream according to the adjusted service level.

If the request received by the media stream sending network is to increase the service level of one of its own media streams, and the service levels of all media streams transmitted on the network are set to be higher, there are not enough system resources to support it. With this adjustment, the media stream sending network can temporarily reduce the service level of other media streams, so as to give priority to ensuring the service level of the requested media stream.

The above setting or modification of media streaming quality can also be initiated by the client, specifically:

The user control unit 203 sends a media transmission quality setting request to the media transmission control unit 201; the media transmission control unit 201 obtains the subscription data of the corresponding user from the subscription database 204 according to the request, and judges whether the user's request conforms to the subscription data, if If it matches, it means that the user has passed the subscription verification, and the media transmission control unit 201 will set an adjustment policy corresponding to the media stream according to the user's requirements.

Before setting the transmission quality of the media stream, the media transmission control unit 201 needs to obtain the service information of the media stream, such as the IP address and port number of the media stream transmission, service type and application server identification.

Generally, the application server 103 will report the service information of the media stream to the media transmission control unit 201 when the service of the media stream is established.

In addition, the user control unit 203 and the client terminal 101 can also be set on the same device, and the client terminal 101 will record the service information of the media stream when the service of the media stream is established. When the user control unit 203 initiates a media transmission quality setting request, it obtains the service information of the media stream from the client terminal 101 and reports it to the media transmission control unit 201 .

In the above-mentioned process, the media transmission control unit 201 can also be preset with service information of a certain type of media stream, such as the AS identifier of the broadcast service, etc., once receiving the media stream quality adjustment request for the broadcast service, the Set to send an adjustment notification to the AS of the broadcast service.

Based on the system shown in Figure 2, the flow process of realizing the quality control of media stream delivery among the present invention is shown in Figure 3, including the following steps:

A. When the media stream sending network performs normal media stream transmission, the operator control unit applies to the media transmission control unit for setting the service level of the media stream. After receiving the media transmission quality setting request, the media transmission control unit sets the service level adjustment policy of the media stream according to the above request and the media stream service information it has learned.

For example, the operator control unit may set the service level of the voice service on the PoC server to be higher than that of the video data, or set the service level of the service provided by the PoC server to be higher than that of the IM server. A specific example of the operator's control unit performing the above settings is shown in Figure 4, including the following steps:

Step 401, the operator control unit presets a service level processing template, and sends it to the media transmission control unit through a media stream service level modification request.

In this step, the operator can set a service level processing template through data configuration, and the format and content of the template can be set arbitrarily as required. For example, the template includes content such as service level selection and business type selection, and is set in a form such as a table. Taking the PoC server as an example, Table 1 is the service level processing table set by the operator for the server, and all table items are set as default values.

Service name PoCv2.0 Service provider name ptt.ShunTong.com Service data type1 voice High class Service data type2 video Medium class Service data type3 message Low class Service data type4 ftp Low class Service data type5 others Low class

Table I

When data congestion occurs, media streams marked as High class will be delivered first, and media streams of other classes can only be buffered or discarded directly.

Step 402, the media transmission control unit sets the service level adjustment strategy corresponding to the media stream according to the service information and the service level processing template, and judges whether the setting is successful, and if successful, returns a successful response, and performs step B; otherwise, the media transmission control unit A rejection message is sent to the operator control unit, as shown by the dotted line in Figure 4, indicating that the operator fails to set this time, and the process ends.

In addition, in step A, the above service level setting request may also be sent by the user control unit. A specific example of the user control unit performing the above settings is shown in Figure 5, including the following steps:

Step 501, the user control unit sends a media stream service level setting request to the media transmission control unit.

When the media transmission control unit is a certain node in the service establishment process, the media stream service level setting request can be realized by using existing SIP protocol, HTTP protocol or XCAP protocol, such as using the SIP UPDATE message in the SIP protocol, SIP REINVITE message, or SIPMESSAGE message, etc., so that the system can perform billing and other processing. Since the SIP signaling originally used to modify the quality of the bearer is used to modify the transmission quality of the media stream, a field such as SIP UPDATE needs to be further set to distinguish whether a modification request is for the quality of the bearer or the quality of the media stream.

Steps 502-503, the media transmission control unit authenticates the access legality of the user control unit, and after passing the authentication, sends the service level processing template to the user control unit through a media stream service level download message.

Step 504: After obtaining the service level processing template, the user control unit sets the service level of the corresponding media stream according to the options provided in the template, and sends the setting result to the media transmission control unit through the media stream service level modification request.

Steps 505-507, the media transmission control unit performs contract verification to the subscription database, and if the verification is passed, set the service level adjustment strategy corresponding to the media stream according to the service information and the setting result described in step 504, and reply a successful response to the user control unit , and then execute step B; otherwise, the media transmission control unit sends a rejection message to the user control unit, and the process ends.

Since each user control unit is assigned a user level when signing a contract, the modification rights of user control units of different levels are different, so the media transmission control unit needs to go to the subscription database to verify whether the modification of the user control unit this time exceeds the authority scope.

It can be seen from the above description that the operator and the user can send transmission quality setting requests to the media transmission control unit at the same time, or only one party sends the above request. Generally, the setting priority of the operator is higher than that of the user. If the operator and the user apply at the same time, the service level of the media stream will be set according to the operator's requirements. The user control unit can only modify the service level of the media stream with the permission of the subscription database and/or the operator.

In addition, the media transmission control unit may obtain the service information of the media stream according to its own default settings. Alternatively, the application server reports the service information of the media stream to the media transmission control unit in advance when the service of the media stream is established. It is also possible to set the client terminal and the user control unit on the same device, and the client terminal will record the service information of the media stream when the service of the media stream is established. In this way, the user control unit can acquire the service information of the media stream from the client terminal and report it to the media transmission control unit.

B. The media transmission control unit sends a media transmission quality adjustment notification to the media stream sending network according to the adjustment strategy set in step A.

There are various methods for setting and adjusting policies. For example, the media transmission control unit allocates corresponding MPLS labels for the media stream according to the records of the service level processing template, or sets the ToS value of the IP packet, etc.

After setting the adjustment strategy, the media transmission control unit will send a media transmission quality adjustment notice to at least one of the client terminal, transmission node and application server in the media stream sending network, and the media transmission quality adjustment notice adopts SIP or H .248 protocol bearer transmission.

C. After receiving the notification, the media stream sending network adjusts the service level of the media stream being transmitted by itself, and transmits the media stream according to the adjusted service level.

In this step, after receiving the quality adjustment notification, the client terminal, transmission node and/or application server will execute the corresponding transmission control strategy, such as modifying the connection attribute by adjusting the ToS value of the IP packet of the media stream, or adjusting the MPLS label, In this way, the QoS or priority of a certain media stream can be adjusted, so that the media stream with a higher service level can be inserted into the high-priority queue for priority processing.

In the above process, if the client terminal roams, the media transmission control unit can directly send the media transmission quality adjustment notification to the transmission node of the roaming network where the client terminal is located, or first send it to the transmission node of the home network, and then the home network Send to the roaming network, such as sending as roaming subscription data, etc.

It can be seen from the above-mentioned embodiments that the media stream transmission system and media stream transmission quality control method of the present invention can adjust the service level of the media stream according to network conditions and user needs, thereby realizing flexible configuration of the service level of the media stream and ensuring important Service data is prioritized by the network, improving user experience and enhancing the flexibility of network data transmission.

Claims (25)

1. media stream transportation system, this system comprise that Media Stream sends network, is characterized in that this system also comprises the media delivery control unit;

Described media delivery control unit obtains the business information of Media Stream, and after the media transmission quality that receives this Media Stream is provided with request, according to business information and described request the grade of service adjustment strategy of Media Stream is set, and sends the media transmission quality adjustment to described Media Stream transmission network and notify;

Media Stream sends network based described notice, and the Media Stream that self is being transmitted carries out grade of service adjustment, and transmits described Media Stream according to the adjusted grade of service.

2. system according to claim 1 is characterized in that this system also comprises operator's control unit, and then described operator control unit sends media transmission quality to the media delivery control unit request is set.

3. system according to claim 1 is characterized in that, described Media Stream sends network and comprises client terminal, transmission node and application server;

Then described media delivery control unit issues media transmission quality adjustment notice to one of them of described client terminal, transmission node and application server.

4. system according to claim 3 is characterized in that, when described application server is set up in the business of Media Stream, the business information of described Media Stream is reported the media delivery control unit.

5. system according to claim 3 is characterized in that, described media delivery control unit obtains the business information of described Media Stream according to self default setting.

6. media stream transportation system, this system comprise that Media Stream sends network, is characterized in that this system also comprises media delivery control unit, user control unit and subscribed database;

Described media delivery control unit obtains the business information of Media Stream, described user control unit is sent media transmission quality to the media delivery control unit request is set, the media delivery control unit is according to described request, to the subscribed database checking of contracting, and adjust strategy by the back according to the grade of service that business information and described request are provided with Media Stream, and send network to described Media Stream and send media transmission quality adjustment notice in checking;

Media Stream sends network based described notice, and the Media Stream that self is being transmitted carries out grade of service adjustment, and transmits described Media Stream according to the adjusted grade of service.

7. system according to claim 6 is characterized in that, described Media Stream sends network and comprises client terminal, transmission node and application server;

Then described media delivery control unit issues media transmission quality adjustment notice to one of them of described client terminal, transmission node and application server.

8. system according to claim 7 is characterized in that, described client terminal and user control unit are arranged on the same device, when this client terminal is set up in the business of described Media Stream, writes down the business information of this Media Stream;

Then user control unit is obtained the business information of described Media Stream from client terminal, and reports the media delivery control unit.

9. system according to claim 7 is characterized in that, when described application server is set up in the business of Media Stream, the business information of described Media Stream is reported the media delivery control unit.

10. system according to claim 6 is characterized in that, described media delivery control unit obtains the business information of described Media Stream according to self default setting.

11. the control method of a media stream delivery quality is applied in the media stream transportation system, this system comprises that Media Stream sends network and media delivery control unit, is characterized in that this method may further comprise the steps:

A, media delivery control unit obtain the business information of Media Stream, and after the media transmission quality that receives this Media Stream is provided with request, and the grade of service that this Media Stream is set according to business information and described request is adjusted strategy;

B, media delivery control unit are according to the set adjustment strategy of step a, send network to Media Stream and send media transmission quality adjustment notice, after Media Stream transmission network receives described notice, the grade of service of the described Media Stream that self is being transmitted is adjusted, and transmits described Media Stream according to the adjusted grade of service.

12. method according to claim 11 is characterized in that, the described method that grade of service adjustment strategy is set of step a is:

A21, operator's control unit set in advance grade of service processing template, and send to the media delivery control unit by Media Stream grade of service modification request;

A22, media delivery control unit be according to business information and grade of service processing template, and the grade of service that corresponding Media Stream is set is adjusted strategy, and judges whether to be provided with success, if success then reply successful respond, and execution in step b; Otherwise the media delivery control unit sends refuse information to operator's control unit, process ends.

13. method according to claim 12, it is characterized in that, the method to set up of described grade of service adjustment strategy is specially: the media delivery control unit is the MPLS label of described allocated for media streams correspondence according to the record of grade of service processing template, and the ToS value of IP bag perhaps is set.

14. method according to claim 12, it is characterized in that the described method of sending media transmission quality adjustment notice of step b is: one of them of client terminal, transmission node and the application server of media delivery control unit in Media Stream transmission network issues media transmission quality adjustment notice.

15. method according to claim 14 is characterized in that, the described method of obtaining the business information of Media Stream of step a is: when application server is set up in the business of Media Stream, the business information of described Media Stream is reported the media delivery control unit;

Perhaps, the media delivery control unit obtains the business information of described Media Stream according to self default setting.

16. method according to claim 11 is characterized in that, the business information of described Media Stream comprises: IP address and port numbers, type of service and the application server identifier of media flow transmission.

17. method according to claim 11 is characterized in that, described media transmission quality adjustment notice is according to Session Initiation Protocol, or H.248 agreement sends.

18. the control method of a media stream delivery quality is applied in the media stream transportation system, this system comprises that Media Stream sends network, media delivery control unit, user control unit and subscribed database, is characterized in that this method may further comprise the steps:

A, media delivery control unit obtain the business information of Media Stream, user control unit is sent the Media Stream grade of service to the media delivery control unit request is set, the media delivery control unit is according to described request, to the subscribed database checking of contracting, and adjust strategy by the back according to the grade of service that business information and described request are provided with this Media Stream in checking;

B, media delivery control unit are according to the set adjustment strategy of step a, send network to Media Stream and send media transmission quality adjustment notice, after Media Stream transmission network receives described notice, the grade of service of the described Media Stream that self is being transmitted is adjusted, and transmits described Media Stream according to the adjusted grade of service.

19. method according to claim 18 is characterized in that, the described method that grade of service adjustment strategy is set of step a is:

A11, user control unit are sent the Media Stream grade of service to the media delivery control unit request are set, the media delivery control unit carries out the legitimacy authentication to described user control unit, and after authentication is passed through, issue grade of service processing template to described user control unit;

The option that a12, user control unit provide according to grade of service processing template is provided with the grade of service of corresponding Media Stream, and the result will be set send to the media delivery control unit;

If a13 media delivery control unit to the signatory checking of subscribed database by according to business information and the described result that is provided with of step a12, the grade of service that corresponding Media Stream is set is adjusted strategy, and to user control unit answer successful respond, execution in step b then; Otherwise the media delivery control unit sends refuse information to user control unit, process ends.

20. method according to claim 19 is characterized in that, the described Media Stream grade of service of step a11 is provided with request and adopts Session Initiation Protocol, or http protocol, or the XCAP agreement realizes.

21. method according to claim 19, it is characterized in that, the method to set up of described grade of service adjustment strategy is specially: the media delivery control unit is the MPLS label of described allocated for media streams correspondence according to the record of grade of service processing template, and the ToS value of IP bag perhaps is set.

22. method according to claim 19, it is characterized in that the described method of sending media transmission quality adjustment notice of step b is: one of them of client terminal, transmission node and the application server of media delivery control unit in Media Stream transmission network issues media transmission quality adjustment notice.

23. method according to claim 22 is characterized in that, described client terminal and user control unit are arranged on the same device, when this client terminal is set up in the business of described Media Stream, write down the business information of this Media Stream;

Then the described method of obtaining the business information of Media Stream of step a is: user control unit is obtained the business information of described Media Stream from client terminal, and reports the media delivery control unit.

24. method according to claim 18 is characterized in that, the business information of described Media Stream comprises: IP address and port numbers, type of service and the application server identifier of media flow transmission.

25. method according to claim 18 is characterized in that, described media transmission quality adjustment notice is according to Session Initiation Protocol, or H.248 agreement sends.

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