CN112188239B - Audio and video stream transmission method, media server and wireless access network entity - Google Patents

Abstract

The application discloses an audio and video stream transmission method, a media server and a wireless access network entity. The method comprises the following steps: sending media stream configuration parameters to a wireless network, wherein the media stream configuration parameters comprise a QoS (quality of service) configuration table of media contents and a current coding format being used by a user; the QoS configuration table comprises the corresponding relation of the entry serial number, the coding format and the QoS parameter; receiving target QoS configuration parameters determined by a wireless network; the target QoS configuration parameters are determined by the wireless network based on the transmission quality of the media stream, and comprise target entry sequence numbers; and adjusting the current coding format of the media stream to the target coding format corresponding to the target entry sequence number, and transmitting the media content according to the target coding format. The method effectively utilizes network resources, and realizes the self-adaptive transmission of the audio and video stream code stream under the condition of not increasing the expenses of a media server and a terminal.

Description

Audio and video stream transmission method, media server and wireless access network entity

technical field

The present application relates to the field of communication technologies, and in particular to an audio and video stream transmission method, a media server and a wireless access network entity.

Background technique

When using terminals such as mobile phones to watch audio and video programs, changes in the quality of wireless signals will have a negative impact on user experience. In order to improve user experience, the functions provided by the media transmission protocol can be used to adapt to changes in network transmission quality, and at the same time, it is necessary to rely on the terminal to monitor the current available bandwidth and select an appropriate media program source accordingly. This way will cause the terminal to consume relatively large resources. Moreover, the terminal will constantly change the bit rate of the data stream that actually needs to be carried in the same data stream, that is, the demand for bandwidth is constantly changing; on the other hand, the encoding rate of the program source provided by the media server changes in steps. But in the 5G (5th-Generation) wireless network, in order to ensure QoS (Quality of Service, quality of service), the 5G wireless network will always try to meet the needs of users to the maximum extent. This causes a mismatch between the media server and the terminal, resulting in a waste of network resources.

For example, the (same) program source provided by the media server is divided into two streams of 500kbps and 200kps. When the net transmission rate supported by the wireless network drops from 500kbps to 400kbps, a bandwidth of 400kbps will be provided to the client. However, when the source code rate of the program is completely selected by the terminal, the terminal can only select a code stream of 200 kbps, which causes a lot of waste of resources.

application content

To this end, the present application provides an audio and video stream transmission method, a media server and a wireless access network entity, so as to solve the problem of wasting network resources caused by the mismatch between the media server and the terminal in the prior art.

In order to achieve the above purpose, the first aspect of the present application provides an audio and video stream transmission method, which is applied to a media server, and the method includes:

Send media flow configuration parameters to the wireless network, wherein the media flow configuration parameters include the quality of service QoS configuration table of the media content and the current encoding format that the user is using; the quality of service QoS configuration table includes entry serial number, encoding format and QoS Correspondence of parameters;

Receiving target QoS configuration parameters determined by the wireless network; wherein, the target QoS configuration parameters are determined by the wireless network based on the transmission quality of the media stream, and the target QoS configuration parameters include a target entry sequence number;

Adjust the current encoding format of the media stream to the target encoding format corresponding to the target entry number, and transmit the media content according to the target encoding format.

Wherein, the media stream configuration parameters further include a user identifier, a quintuple of the media stream, and a media content identifier.

Wherein, the target QoS configuration parameters include an entry sequence number and a corresponding quality of service flow identifier QFI.

In the second aspect, the embodiment of the present application provides an audio and video stream transmission method, which is applied to the network side, and the method includes:

Monitor the transmission quality of the media stream used by the current user and obtain the monitoring results;

When the monitoring result is that the transmission capability of the wireless network does not match the actual transmission requirement of the media stream, acquiring a target quality of service QoS configuration parameter that matches the transmission capability of the wireless network;

Send the target QoS configuration parameters to the media server, so that the media server can change the encoding format to the target encoding format according to the target QoS configuration parameters;

Receive the media stream transmitted by the media server according to the target encoding format.

Wherein, the sending the target QoS configuration parameters to the media server for the media server to transmit media content according to the target QoS configuration parameters includes:

Sending the target QoS configuration parameter to the session management function entity, so that the session management function entity determines the identifier of the media content being transmitted and the corresponding target entry sequence number based on the service quality flow identifier in the target QoS configuration parameter;

The session management function entity sends the identifier of the media content and the corresponding target entry number to the media server through the network function opening entity, so that the media server can follow the target encoding format corresponding to the target entry number Transfer media content.

Wherein, the monitoring of the transmission quality of the media stream used by the current user, before obtaining the monitoring result, also includes:

Receive the user identifier using the wireless network, the quintuple of the media stream, the identifier of the media content, the configuration table of the media content and the current entry number used by the media stream sent by the media server.

Wherein, when the monitoring result is that the transmission capability of the wireless network cannot meet the actual transmission requirements of the media stream, after receiving the media stream transmitted by the media server according to the target encoding format, further includes:

receiving the media stream transmitted by the media server in the target encoding format;

Adjusting the QoS configuration parameters to the QoS configuration parameters corresponding to the target encoding format, and transmitting the media stream according to the adjusted QoS configuration parameters.

Wherein, when the monitoring result is that the transmission capability of the wireless network exceeds the actual transmission requirement of the media stream, before the receiving media server transmits the media stream according to the target encoding format, it also includes:

Adjusting the QoS configuration parameters to the QoS configuration parameters corresponding to the target encoding format, and transmitting the media stream according to the adjusted QoS configuration parameters.

In a third aspect, the embodiment of the present application provides a media server, including:

A sending module, configured to send media stream configuration parameters to the wireless network, wherein the media stream configuration parameters include a quality of service QoS configuration table of media content and the current encoding format that the user is using; the quality of service QoS configuration table includes an entry sequence number , the corresponding relationship between the encoding format and the QoS parameter;

A receiving module, configured to receive a target QoS configuration parameter determined by the wireless network; wherein the target QoS configuration parameter is determined by the wireless network based on the transmission quality of the media stream, and the target QoS configuration parameter includes a target entry number;

An adjustment module, configured to adjust the current encoding format of the media stream to the target encoding format corresponding to the target entry number;

A transmission module, configured to transmit media content according to the target encoding format.

In a fourth aspect, the embodiment of the present application provides a wireless access network entity, including:

The monitoring module is used to monitor the transmission quality of the media stream used by the current user and obtain the monitoring result;

An acquisition module, configured to acquire a target quality of service QoS configuration parameter matching the wireless network transmission capability when the monitoring result is that the transmission capability of the wireless network does not match the actual transmission requirement of the media stream;

A sending module, configured to send the target QoS configuration parameters to a media server, so that the media server can change the encoding format to a target encoding format according to the target QoS configuration parameters;

The receiving module is configured to receive the media stream transmitted by the media server according to the target coding format.

This application has the following advantages:

The audio and video stream transmission method provided by the embodiment of the present application sends media stream configuration parameters to the wireless network, wherein the media stream configuration parameters include the quality of service QoS configuration table of the media content and the current encoding format that the user is using; the quality of service QoS configuration table Including the corresponding relationship between the entry number, encoding format and QoS parameters; receiving the target QoS configuration parameters determined by the wireless network; wherein, the target QoS configuration parameters are determined by the wireless network based on the transmission quality of the media stream, and the target QoS configuration parameters include the target entry number; Adjust the current encoding format of the media stream to the target encoding format corresponding to the target entry number, and transmit the media content according to the target encoding format. The method effectively utilizes network resources, and realizes self-adaptive transmission of audio and video stream code streams without increasing the overhead of media servers and terminals.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the description, together with the following specific embodiments, are used to explain the present application, but do not constitute a limitation to the present application.

Fig. 1 is the flow chart of a kind of audio and video stream transmission method that the embodiment of the present application provides;

FIG. 2 is a flow chart of an audio and video stream transmission method provided by an embodiment of the present application;

Fig. 3 is the flow chart of sending the target QoS configuration parameter to the media server in the audio-video stream transmission method that the embodiment of the present application provides;

FIG. 4 is a functional block diagram of a media server provided by an embodiment of the present application;

FIG. 5 is a functional block diagram of a wireless access network entity provided by an embodiment of the present application;

FIG. 6 is a flow chart of an audio and video stream transmission method provided by an embodiment of the present application.

detailed description

The specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementations described here are only used to illustrate and explain the present application, and are not intended to limit the present application.

As used in this disclosure, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The terms used in the present disclosure are for describing specific embodiments only, and are not intended to limit the present disclosure. As used in this disclosure, the singular forms "a" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise.

When the terms "comprising" and/or "consisting of" are used in the present disclosure, it specifies the presence of said features, integers, steps, operations, elements and/or components, but does not exclude the presence or addition of one or more other Features, integers, steps, operations, elements, components and/or groups thereof.

Unless otherwise defined, all terms (including technical and scientific terms) used in this disclosure have the same meaning as commonly understood by one of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art and the present disclosure, and will not be interpreted as having idealized or excessive formal meanings, Unless the disclosure expressly so limited.

In the first aspect, the audio and video stream transmission method provided in the embodiment of the present application can be applied to a media server.

FIG. 1 is a flowchart of an audio and video stream transmission method provided by an embodiment of the present application. As shown in Figure 1, it is applied to the media server, including:

Step 101, sending media stream configuration parameters to a wireless network.

In some embodiments, when the media server transmits the media content to the terminal, it may send the configuration parameters of the media stream corresponding to the media content to the wireless network.

Wherein, the media stream configuration parameters include the quality of service QoS configuration table of the media content and the current encoding format being used by the user. The quality of service QoS configuration table includes the corresponding relationship between the entry sequence number, encoding format and QoS parameters.

Table 1 is the QoS configuration table for media content

In some embodiments, the IP layer network QoS parameter group includes but is not limited to bandwidth, delay, packet loss, user experience, and the like.

In some embodiments, the media stream configuration parameters further include a user identifier, a quintuple of the media stream established with the user, and an identifier of the media content. The user here refers to the user who transmits media content with the media server, and the user identifier refers to an identifier capable of identifying the identity of the user. The five-tuple of the media stream includes source IP address, destination IP address, source port number, destination port number and output layer protocol type. The identifier of the media content refers to an identifier capable of identifying the media content.

In some embodiments, the media server sends the media flow configuration parameters to the policy control function entity PCF through the network function opening entity NEF, and the media configuration parameters include the user identification, the quintuple of the media flow established with the user, and the identification QoS configuration of the media content The table and the current encoding format the user is using.

The policy control function entity generates QoS configuration information according to the QoS configuration table of the media content, and corresponds the current encoding format to the entry number in the QoS configuration information, and at the same time, ensures that the entry number in the QoS configuration information is consistent with the entry number in the QoS configuration table . The policy control function entity obtains the session management function entity SMF that provides services for the media stream according to the user identifier and the media stream quintuple, and sends the QoS configuration information, the entry sequence number, the media stream quintuple and the media content identifier to the session management functional entities.

The session management function entity identifies the current quality of service flow identifier QFI according to the media flow quintuple, and sends the QoS configuration information and the entry sequence number to the radio access network entity RAN. The radio access network entity configures local QoS parameters according to the current QoS flow identifier and QoS configuration information, and applies the QoS configuration entry pointed to by the QoS configuration table to the media flow corresponding to the QoS flow identifier.

Step 102, receiving target QoS configuration parameters determined by the wireless network.

Wherein, the target QoS configuration parameter is determined by the wireless network based on the transmission quality of the media stream, and the target QoS configuration parameter includes a target entry number.

In some embodiments, when the radio access network entity in the wireless network judges that the current media stream is due to reasons such as wireless signal quality or higher priority services, the QoS parameters of the media stream pointed to by the current quality of service flow identifier QFI cannot meet the requirements. When transmitting the requirements, select the next satisfying entry sequence number, that is, the target QoS configuration parameters that can meet the transmission requirements.

In some embodiments, the radio access network entity sends the entry sequence number that can meet the transmission requirement and the corresponding QoS flow identifier to the session management function entity. The session management function entity obtains the media content ID according to the QoS stream ID, and then sends the target QoS configuration parameters and the target media stream quintuple to the media server through the network function opening entity.

Step 103: Adjust the current encoding format of the media stream to the target encoding format corresponding to the target entry number, and transmit the media content according to the target encoding format.

In some embodiments, the media server receives the target QoS configuration parameters determined by the wireless access network entity, obtains the target encoding format according to the target entry number, and then adjusts the current encoding format of the media stream to the target encoding format corresponding to the target entry number , and transmit the media content in accordance with the target encoding format.

The audio and video stream transmission method provided by this embodiment sends media stream configuration parameters to the wireless network, wherein the media stream configuration parameters include the quality of service QoS configuration table of media content and the current encoding format that the user is using; the quality of service QoS configuration table includes The corresponding relationship between the entry sequence number, encoding format and QoS parameter; receiving the target QoS configuration parameter determined by the wireless network; wherein, the target QoS configuration parameter is determined by the wireless network based on the transmission quality of the media stream, and the target QoS configuration parameter includes the target entry sequence number; The current encoding format of the media stream is adjusted to the target encoding format corresponding to the target entry number, and the media content is transmitted according to the target encoding format. The method effectively utilizes network resources, and realizes self-adaptive transmission of audio and video stream code streams without increasing the overhead of media servers and terminals.

In a second aspect, the embodiment of the present application provides an audio and video stream transmission method, which is applied to a network side, for example, to a wireless access network entity.

Fig. 2 is a flowchart of an audio and video stream transmission method provided by an embodiment of the application. As shown in Figure 2, audio and video stream transmission methods include:

Step 201, monitor the transmission quality of the media stream used by the current user, and obtain the monitoring result.

The radio access network entity monitors the transmission quality of the media stream currently used by the user, and obtains a monitoring result. Wherein, the media stream is a data stream of media content transmitted by the media server to the terminal.

In some embodiments, when the media server sends the media content to the terminal, it can simultaneously send the media stream configuration parameters to the wireless network. Wherein, the media stream configuration parameters include the quality of service QoS configuration table of the media content, the current encoding format being used by the user, the user identification, the quintuple of the media stream established with the user, and the identification of the media content. The quality of service QoS configuration table includes the corresponding relationship between the entry sequence number, encoding format and QoS parameters. User ID refers to an ID that can identify a user. The five-tuple of the media stream includes source IP address, destination IP address, source port number, destination port number and output layer protocol type. The identifier of the media content refers to an identifier capable of identifying the media content.

In some embodiments, the media server sends the media flow configuration parameters to the policy control function entity PCF through the network function opening entity NEF, and the media configuration parameters include the user identification, the quintuple of the media flow established with the user, and the identification QoS configuration of the media content The table and the current encoding format the user is using.

The policy control function entity generates QoS configuration information according to the QoS configuration table of the media content, and corresponds the current encoding format to the entry number in the QoS configuration information, and at the same time, ensures that the entry number in the QoS configuration information is consistent with the entry number in the QoS configuration table . The policy control function entity obtains the session management function entity SMF that provides services for the media stream according to the user identifier and the media stream quintuple, and sends the QoS configuration information, the entry sequence number, the media stream quintuple and the media content identifier to the session management functional entities.

The session management function entity identifies the current quality of service flow identifier QFI according to the media flow quintuple, and sends the QoS configuration information and the entry sequence number to the radio access network entity RAN. The radio access network entity configures local QoS parameters according to the current QoS flow identifier and QoS configuration information, and applies the QoS configuration entry pointed to by the QoS configuration table to the media flow corresponding to the QoS flow identifier. So far, configuration of wireless network resources and resource requirements of media content is completed.

Step 202, when the monitoring result shows that the transmission capability of the wireless network does not match the actual transmission requirement of the media stream, acquire the target quality of service QoS configuration parameters that match the transmission capability of the wireless network.

In some embodiments, when the monitoring result shows that the transmission capability of the wireless network does not match the actual transmission requirement of the media stream, the target quality of service QoS configuration parameters matching the current transmission capability of the wireless network are acquired. Wherein, the target QoS configuration parameter includes a target entry sequence number.

For example, when the radio access network entity in the wireless network judges that the QoS parameters of the media stream pointed to by the current quality of service flow identifier QFI cannot meet the transmission requirements due to reasons such as wireless signal quality or higher priority services of the current media stream, Select the next satisfying entry sequence number, that is, the target QoS configuration parameter that can meet the transmission requirements.

Step 203, sending the target QoS configuration parameters to the media server, so that the media server can change the encoding format to the target encoding format according to the target QoS configuration parameters.

In some embodiments, the radio access network entity sends the entry sequence number that can meet the transmission requirement and the corresponding QoS flow identifier to the session management function entity. The session management function entity obtains the media content ID according to the QoS stream ID, and then sends the target QoS configuration parameters and the target media stream quintuple to the media server through the network function opening entity.

In some embodiments, the media server receives the target QoS configuration parameters determined by the wireless access network entity, obtains the target encoding format according to the target entry number, and then adjusts the current encoding format of the media stream to the target encoding format corresponding to the target entry number , and transmit the media content in accordance with the target encoding format.

Step 204, receiving the media stream transmitted by the media server according to the target coding format.

When the media server receives the target entry sequence number determined by the session management function entity, it searches the QoS configuration table of the media content according to the target entry sequence number to obtain the QoS parameters, and replaces the media content with a new encoding format, which is corresponding to the media stream quintuple The media content is replaced with a new encoding format, and then the media content is transmitted in the updated encoding format.

In some embodiments, as shown in FIG. 3, step 203 specifically includes:

Step 301: Send the target QoS configuration parameter to the session management function entity, so that the session management function entity determines the identifier of the media content being transmitted and the corresponding target entry sequence number based on the QoS stream identifier in the target QoS configuration parameter.

In some embodiments, the radio access network entity sends the target QoS configuration parameter to the session management function entity, and the session management function entity determines the identifier of the media content being transmitted based on the quality of service flow identifier in the target QoS configuration parameter, and the media content The serial number of the entry corresponding to the content identifier, that is, the serial number of the target entry.

Step 302, the session management function entity sends the media content identifier and the corresponding target entry number to the media server through the network function opening entity, so that the media server can transmit the media content according to the target encoding format corresponding to the target entry number.

In some embodiments, the session management function entity sends the identifier of the media content and the corresponding target entry number to the media server through the network function opening entity, and the media server obtains the corresponding target encoding format from the QoS configuration table according to the target entry number.

In some embodiments, before step 201, it also includes:

Receive the user ID of the wireless network being used, the quintuple of the media stream, the ID of the media content, the configuration table of the media content and the serial number of the current entry used by the media stream sent by the media server.

In some embodiments, when the media server sends the media content to the user terminal, it sends the user identifier, the quintuple of the media stream, the identifier of the media content, the configuration table of the media content, and the current entry number used by the media stream to the wireless network.

It should be noted that, for the same media content, if the media server has sent the user identifier, the quintuple of the media stream, the identifier of the media content, the configuration table of the media content, and the current The entry sequence number is not sent repeatedly, in other words, the media server only sends it once to the policy control functional entity.

In some embodiments, when the monitoring result is that the transmission capability of the wireless network cannot meet the actual transmission requirements of the media stream, after step 204, further includes:

Receive the media stream transmitted by the media server in the target encoding format; adjust the QoS configuration parameters to the QoS configuration parameters corresponding to the target encoding format, and transmit the media stream according to the adjusted QoS configuration parameters.

In some embodiments, before the media server sends the media stream in the new encoding format, the wireless network transmits the media stream using the QoS parameters required to satisfy the encoding format of the old media stream to the maximum extent, until the media server transmits the media stream in the target encoding format. The media stream then adjusts the QoS configuration parameters to the QoS configuration parameters corresponding to the target encoding format, and transmits the media stream according to the adjusted QoS configuration parameters.

For example, when the lower-level QoS configuration is replaced due to the degradation of wireless signal quality or other reasons, or when the original or higher-level QoS configuration can be restored due to wireless signal quality recovery or other reasons, the wireless network receives the media After transmitting the media stream in the target encoding format, the server adjusts the QoS configuration parameters to the QoS configuration parameters corresponding to the target encoding format, and transmits the media stream according to the adjusted QoS configuration parameters.

In some embodiments, when the monitoring result is that the transmission capability of the wireless network exceeds the actual transmission requirement of the media stream, before step 204, the method further includes:

Adjust the QoS configuration parameters to the QoS configuration parameters corresponding to the target encoding format, and transmit the media stream according to the adjusted QoS configuration parameters.

For example, when the quality of the wireless signal improves or a higher-level QoS configuration is replaced due to other reasons, the wireless network immediately enables the high-level QoS configuration without waiting for the media stream of the new encoding format to make adjustments.

The audio and video stream transmission method provided by the embodiment of the present application monitors the transmission quality of the media stream used by the current user and obtains the monitoring result; when the monitoring result is that the transmission capability of the wireless network does not match the actual transmission requirement of the media stream , acquiring a target quality of service QoS configuration parameter matching the wireless network transmission capability; sending the target QoS configuration parameter to a media server, so that the media server can change the encoding format to the target QoS configuration parameter according to the target QoS configuration parameter Coding format: receive the media stream sent by the media server and transmit the media stream according to the target coding format. The method effectively utilizes network resources, and realizes self-adaptive transmission of audio and video stream code streams without increasing the overhead of media servers and terminals.

In a third aspect, the embodiment of the present application provides a media server. Fig. 4 is a functional block diagram of a media server provided by an embodiment of the present application. As shown in Figure 4, the media server includes:

The sending module 401 is configured to send media stream configuration parameters to the wireless network.

Among them, the media stream configuration parameters include the quality of service QoS configuration table of the media content and the current encoding format used by the user; the quality of service QoS configuration table includes the corresponding relationship between the entry number, encoding format and QoS parameters.

In some embodiments, when the media server transmits the media content to the terminal, it may send the configuration parameters of the media stream corresponding to the media content to the wireless network.

In some embodiments, the IP layer network QoS parameter group includes but is not limited to bandwidth, delay, packet loss, user experience, and the like.

In some embodiments, the media stream configuration parameters further include a user identifier, a quintuple of the media stream established with the user, and an identifier of the media content. The user here refers to the user who transmits media content with the media server, and the user identifier refers to an identifier capable of identifying the identity of the user. The five-tuple of the media stream includes source IP address, destination IP address, source port number, destination port number and output layer protocol type. The identifier of the media content refers to an identifier capable of identifying the media content.

In some embodiments, the media server sends the media flow configuration parameters to the policy control function entity PCF through the network function opening entity NEF, and the media configuration parameters include the user identification, the quintuple of the media flow established with the user, and the identification QoS configuration of the media content The table and the current encoding format the user is using.

The policy control function entity generates QoS configuration information according to the QoS configuration table of the media content, and corresponds the current encoding format to the entry number in the QoS configuration information, and at the same time, ensures that the entry number in the QoS configuration information is consistent with the entry number in the QoS configuration table . The policy control function entity obtains the session management function entity SMF that provides services for the media stream according to the user identifier and the media stream quintuple, and sends the QoS configuration information, the entry sequence number, the media stream quintuple and the media content identifier to the session management functional entities.

The session management function entity identifies the current quality of service flow identifier QFI according to the media flow quintuple, and sends the QoS configuration information and the entry sequence number to the radio access network entity RAN. The radio access network entity configures local QoS parameters according to the current QoS flow identifier and QoS configuration information, and applies the QoS configuration entry pointed to by the QoS configuration table to the media flow corresponding to the QoS flow identifier.

The receiving module 402 is configured to receive target QoS configuration parameters determined by the wireless network.

Wherein, the target QoS configuration parameter is determined by the wireless network based on the transmission quality of the media stream, and the target QoS configuration parameter includes a target entry number.

In some embodiments, when the radio access network entity in the wireless network judges that the current media stream is due to reasons such as wireless signal quality or higher priority services, the QoS parameters of the media stream pointed to by the current quality of service flow identifier QFI cannot meet the requirements. When transmitting the requirements, select the next satisfying entry sequence number, that is, the target QoS configuration parameters that can meet the transmission requirements.

In some embodiments, the radio access network entity sends the entry sequence number that can meet the transmission requirement and the corresponding QoS flow identifier to the session management function entity. The session management function entity obtains the media content ID according to the QoS stream ID, and then sends the target QoS configuration parameters and the target media stream quintuple to the media server through the network function opening entity.

The adjustment module 403 is configured to adjust the current encoding format of the media stream to the target encoding format corresponding to the target entry number.

In some embodiments, the media server receives the target QoS configuration parameters determined by the wireless access network entity, obtains the target encoding format according to the target entry number, and then adjusts the current encoding format of the media stream to the target encoding format corresponding to the target entry number , and transmit the media content in accordance with the target encoding format.

The transmission module 404 is configured to transmit media content according to the target coding format.

In the media server provided by this embodiment, the sending module sends media stream configuration parameters to the wireless network, wherein the media stream configuration parameters include the quality of service QoS configuration table of the media content and the current encoding format that the user is using; the quality of service QoS configuration table includes entries Correspondence between sequence number, encoding format and QoS parameter; receiving module receives the target QoS configuration parameter determined by the wireless network; wherein, the target QoS configuration parameter is determined by the wireless network based on the transmission quality of the media stream, and the target QoS configuration parameter includes the target entry sequence number; The adjustment module adjusts the current encoding format of the media stream to the target encoding format corresponding to the target entry number, and the transmission module transmits the media content according to the target encoding format. The media server effectively utilizes network resources, and realizes adaptive transmission of audio and video stream code streams without increasing the overhead of the media server and the terminal.

In a fourth aspect, the embodiment of the present application provides a radio access network entity. FIG. 5 is a functional block diagram of a radio access network entity provided by an embodiment of the present application. As shown in Figure 5, radio access network entities include:

The monitoring module 501 is configured to monitor the transmission quality of the media stream currently used by the user, and obtain a monitoring result.

The acquiring module 502 is configured to acquire target quality of service QoS configuration parameters matching the wireless network transmission capability when the monitoring result is that the transmission capability of the wireless network does not match the actual transmission requirement of the media stream.

The sending module 503 is configured to send the target QoS configuration parameters to the media server, so that the media server can change the encoding format to the target encoding format according to the target QoS configuration parameters.

The receiving module 504 is configured to receive the media stream transmitted by the media server according to the target coding format.

In the wireless network access entity provided by the embodiment of the present application, the monitoring module is used to monitor the transmission quality of the media stream used by the current user, and obtains the monitoring result; the acquisition module is used when the monitoring result is the transmission capability of the wireless network and the actual transmission of the media stream When the requirements do not match, obtain the target quality of service QoS configuration parameters that match the wireless network transmission capabilities; the sending module is used to send the target QoS configuration parameters to the media server, so that the media server can change the encoding format to the target QoS configuration parameters according to the target QoS configuration parameters Coding format; the receiving module is used to receive the media stream transmitted by the media server according to the target coding format. The method effectively utilizes network resources, and realizes self-adaptive transmission of audio and video stream code streams without increasing the overhead of media servers and terminals.

In order to better understand the audio and video stream transmission method, media server and wireless access network entity provided in this application, the audio and video stream transmission method will be introduced in detail below based on the media server and wireless access network entity.

FIG. 6 is a flow chart of an audio and video stream transmission method provided by an embodiment of the present application. As shown in Figure 6, the audio and video stream transmission methods include:

Step 601, the user equipment sends a first request for media content to the media server. Wherein, the first request includes the user identifier. The user identifier may be a mobile phone number, a hash value of the mobile phone number, a Temporary Mobile Subscriber Identity (TMSI) and a hash value of the TMSI.

Step 602, the media server sends media content to the user equipment.

Step 603, the media server sends the user identification, the quintuple of the media flow established with the user, the identification of the media content, the QoS configuration table of the media content, the entry sequence number ( encoding rate).

Step 604, the policy control function entity performs processing.

In some embodiments, the policy control function entity generates QoS configuration information according to the QoS configuration table of the media content, corresponds the encoding rate to the corresponding entry sequence number in the QoS configuration information, and ensures that the QoS configuration entry sequence number is consistent with the corresponding item in the QoS configuration table The sequence numbers are equal. The session management function entity that is providing session management for this media stream is queried (for example, through UDR) according to the user identifier and the media stream 5-tuple. Send the QoS configuration information, the entry sequence number used by the current media stream, the media stream quintuple and the identifier of the media content to the session management functional entity.

Step 605, the session management function entity identifies the current QoS flow ID according to the media stream quintuple, and sends the QoS configuration information, the entry number used by the current media stream, and the current QoS flow ID to the radio access network entity.

Step 606, the radio access network entity configures local QoS parameters according to the current QoS flow identifier and QoS configuration information, and applies the QoS configuration entry pointed to by the entry number used by the current media flow to the corresponding media flow.

Step 607, when the wireless access network entity finds that the wireless network is abnormal, causing the QoS parameters of the media flow pointed to by the current QoS flow identifier to be unsatisfied, select the next satisfying QoS configuration entry sequence number, that is, the target QoS configuration parameter .

Step 608, the radio access network entity sends the selected target QoS configuration parameters and the corresponding QoS flow identifier to the session management function entity.

Step 609, the session management functional entity finds the corresponding media content ID according to the QoS flow ID, and sends the code format of the media content pointed to by the modified media content ID to the media server through the network function opening entity, that is, the sequence number of the target QoS configuration entry.

Step 610, the media server replaces the media stream with a new encoding format for the media stream corresponding to the media stream quintuple according to the instruction of the session management function entity, that is, replaces the media stream with a new encoding format for the media stream according to the sequence number of the target QoS configuration entry.

Step 611, the wireless access network transmits the media stream according to the target coding format.

It should be noted that all the modules involved in this embodiment are logical modules. In practical applications, a logical unit can be a physical unit, or a part of a physical unit, or multiple physical units combination is realized. In addition, in order to highlight the innovative part of the present application, units that are not closely related to solving the technical problems proposed in the present application are not introduced in this embodiment, but this does not mean that there are no other units in this embodiment.

This embodiment also provides an electronic device, including one or more processors; a storage device, on which one or more programs are stored, and when the one or more programs are executed by the one or more processors, The one or more processors are made to implement the method for transmitting audio and video streams provided in this embodiment. In order to avoid repeated descriptions, the specific steps of the method for transmitting audio and video streams are not repeated here.

This embodiment also provides a computer-readable medium on which a computer program is stored. When the program is executed by a processor, the audio and video stream transmission method provided by this embodiment is implemented. To avoid repeated descriptions, the audio and video streams will not be repeated here Concrete steps of the video stream transmission method.

Those of ordinary skill in the art can understand that all or some of the steps in the methods disclosed above, the functional modules/units in the system, and the device can be implemented as software, firmware, hardware, and an appropriate combination thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be composed of several physical components. Components cooperate to execute. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit . Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As known to those of ordinary skill in the art, the term computer storage media includes both volatile and nonvolatile media implemented in any method or technology for storage of information, such as computer readable instructions, data structures, program modules, or other data. permanent, removable and non-removable media. Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, tape, magnetic disk storage or other magnetic storage devices, or can Any other medium used to store desired information and which can be accessed by a computer. In addition, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media .

It should be noted that, in this document, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.

Those skilled in the art will understand that although some embodiments described herein include some features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of the embodiments. and form different embodiments.

It can be understood that the above implementations are only exemplary implementations adopted to illustrate the principles of the present application, but the present application is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the application, and these modifications and improvements are also regarded as the protection scope of the application.

Claims (9)

1. A method for transmitting audio and video streams, which is applied to a media server, is characterized in that the method comprises: Send media flow configuration parameters to the wireless network, wherein the media flow configuration parameters include the quality of service QoS configuration table of the media content and the current encoding format that the user is using; the quality of service QoS configuration table includes entry serial number, encoding format and QoS Correspondence of parameters; receiving target QoS configuration parameters determined by the wireless network; wherein the target QoS configuration parameters are determined by the wireless network based on the transmission quality of the media stream, and the wireless network sends the target QoS configuration parameters to the session management function entity for The session management function entity determines the identifier of the media content being transmitted and the corresponding target entry sequence number based on the quality of service flow identifier in the target QoS configuration parameter; the session management function entity sends the media content to the network function opening entity and the corresponding target entry serial number are sent to the media server, and the target QoS configuration parameters include the target entry serial number; Adjust the current encoding format of the media stream to the target encoding format corresponding to the target entry number, and transmit the media content according to the target encoding format. 2. The method according to claim 1, wherein the media stream configuration parameters further include a user identifier, a quintuple of the media stream, and a media content identifier. 3. The method according to claim 1, wherein the target QoS configuration parameters include an entry sequence number and a corresponding quality of service flow identifier (QFI). 4. A method for transmitting audio and video streams, applied to the network side, characterized in that the method comprises: Monitor the transmission quality of the media stream used by the current user and obtain the monitoring results; When the monitoring result is that the transmission capability of the wireless network does not match the actual transmission requirement of the media stream, acquiring target QoS configuration parameters that match the transmission capability of the wireless network; Send the target QoS configuration parameters to the media server, so that the media server can change the encoding format to the target encoding format according to the target QoS configuration parameters; Receiving the media stream sent by the media server according to the target encoding format; sending the target QoS configuration parameters to the media server for the media server to transmit media content according to the target QoS configuration parameters, including: Sending the target QoS configuration parameter to the session management function entity, so that the session management function entity determines the identifier of the media content being transmitted and the corresponding target entry sequence number based on the service quality flow identifier in the target QoS configuration parameter; The session management function entity sends the identifier of the media content and the corresponding target entry number to the media server through the network function opening entity, so that the media server can follow the target encoding format corresponding to the target entry number Transfer media content. 5. The method according to claim 4, wherein the monitoring of the transmission quality of the media stream used by the current user, before obtaining the monitoring result, further includes: Receive the user identifier using the wireless network, the quintuple of the media stream, the identifier of the media content, the configuration table of the media content and the current entry number used by the media stream sent by the media server. 6. The method according to claim 4, characterized in that, when the monitoring result shows that the transmission capability of the wireless network cannot meet the actual transmission requirements of the media stream, the receiving media server sends the code according to the target After the format transmits the media stream, it also includes: receiving the media stream transmitted by the media server in the target encoding format; Adjusting the QoS configuration parameters to the QoS configuration parameters corresponding to the target encoding format, and transmitting the media stream according to the adjusted QoS configuration parameters. 7. The method according to claim 4, characterized in that, when the monitoring result shows that the transmission capacity of the wireless network exceeds the actual transmission demand of the media stream, the received media server sends the code according to the target encoding format Before streaming, also include: Adjusting the QoS configuration parameters to the QoS configuration parameters corresponding to the target encoding format, and transmitting the media stream according to the adjusted QoS configuration parameters. 8. A media server, characterized in that, comprising: A sending module, configured to send media stream configuration parameters to the wireless network, wherein the media stream configuration parameters include a quality of service QoS configuration table of media content and the current encoding format that the user is using; the quality of service QoS configuration table includes an entry sequence number , the corresponding relationship between the encoding format and the QoS parameter; The receiving module is configured to receive the target QoS configuration parameters determined by the wireless network; wherein, the target QoS configuration parameters are determined by the wireless network based on the transmission quality of the media stream, and the wireless network sends the target QoS configuration parameters to the session management A functional entity for the session management functional entity to determine the identifier of the media content being transmitted and the corresponding target entry sequence number based on the service quality flow identifier in the target QoS configuration parameter; the session management functional entity uses the network function opening entity Send the identifier of the media content and the corresponding target entry serial number to the media server, and the target QoS configuration parameters include the target entry serial number; An adjustment module, configured to adjust the current encoding format of the media stream to the target encoding format corresponding to the target entry number; A transmission module, configured to transmit media content according to the target encoding format. 9. A radio access network entity, characterized in that, comprising: The monitoring module is used to monitor the transmission quality of the media stream used by the current user and obtain the monitoring result; An acquisition module, configured to acquire target QoS configuration parameters that match the transmission capabilities of the wireless network when the monitoring result is that the transmission capabilities of the wireless network do not match the actual transmission requirements of the media stream; A sending module, configured to send the target QoS configuration parameters to a media server, so that the media server can change the encoding format to a target encoding format according to the target QoS configuration parameters; The sending the target QoS configuration parameters to the media server for the media server to transmit media content according to the target QoS configuration parameters includes: Sending the target QoS configuration parameter to the session management function entity, so that the session management function entity determines the identifier of the media content being transmitted and the corresponding target entry sequence number based on the service quality flow identifier in the target QoS configuration parameter; The session management function entity sends the identifier of the media content and the corresponding target entry number to the media server through the network function opening entity, so that the media server can follow the target encoding format corresponding to the target entry number transmit media content; The receiving module is configured to receive the media stream transmitted by the media server according to the target encoding format.

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