WO2023169230A1

WO2023169230A1 - Service rate adjusting method and communication apparatus

Info

Publication number: WO2023169230A1
Application number: PCT/CN2023/078117
Authority: WO
Inventors: 胡少领; 李强; 窦凤辉
Original assignee: 华为技术有限公司
Priority date: 2022-03-11
Filing date: 2023-02-24
Publication date: 2023-09-14

Abstract

The present application relates to the technical field of wireless communications and provides a service rate adjusting method and a communication apparatus, which can adjust transmission rates of different media between a terminal device and a service server. The method comprises: a first network device determines a first physical layer bit rate of a first media running on a terminal device, wherein the terminal device is wirelessly connected to the first network device; and the first network device sends first information to the terminal device, wherein the first information indicates the first physical layer bit rate of the first media running on the terminal device, and the first physical layer bit rate is used for determining a transmission rate of the first media running on the terminal device between the terminal device and the service server.

Description

Service rate adjustment method and communication device

This application requires priority for the Chinese patent application submitted to the State Intellectual Property Office on March 11, 2022, with the application number 202210238251.8 and the invention title "A source-end rate adaptive adjustment method, network equipment, and terminal equipment for XR services" right, as well as the priority right of a Chinese patent application submitted to the State Intellectual Property Office on April 22, 2022, with application number 202210429762.8 and application name "Business Rate Adjustment Method and Communication Device", the entire content of which is incorporated into this application by reference. .

Technical field

Embodiments of the present application relate to the field of wireless communications, and in particular, to a service rate adjustment method and a communication device.

Background technique

Extended reality (XR) business includes at least two media. XR services can be transmitted through the adaptive media streaming (dynamic adaptive streaming over HTTP, DASH) technology of hypertext transfer protocol (HTTP). For example, the business server transfers the business data of the XR service based on the media type of the XR service. Split into different segments. Among them, different media fragments are transmitted between the terminal device and the service server using different application layer bit rates.

However, when the wireless channel status and/or network congestion status changes, how to adjust the transmission rate of different media in XR services between the terminal device and the service server is an issue that needs to be solved urgently.

Contents of the invention

This application provides a service rate adjustment method and a communication device, which can adjust the transmission rates of different media between terminal equipment and service servers. In order to achieve the above purpose, this application adopts the following technical solutions:

The first aspect is to provide a service rate adjustment method. The execution subject of the method may be the first network device, or may be a chip applied in the first network device. The following description takes the execution subject being the first network device as an example. The method includes: a first network device determining a first physical layer bit rate of a first media running on a terminal device. Wherein, the terminal device is wirelessly connected to the first network device. The first network device sends first information to the terminal device. Wherein, the first information indicates the first physical layer bit rate of the first media running on the terminal device, and the first physical layer bit rate is used to determine the transmission rate of the first media running on the terminal device between the terminal device and the service server. .

Since the first information not only indicates the first physical layer bit rate, but also indicates the first medium, even if at least two media are running simultaneously on the terminal device, it can be determined based on the first information that the medium whose transmission rate is to be adjusted is the first media, and further adjusts the transmission rate of the first media between the terminal device and the service server based on the first physical layer bit rate.

In a possible design, the method further includes: the first network device determines a second physical layer bit rate of the second media running on the terminal device. The first information also indicates the second physical layer bit rate of the second media running on the terminal device. The second physical layer bit rate is used to determine the transmission of the second media running on the terminal device between the terminal device and the service server. rate.

That is to say, in addition to indicating the first physical layer bit rate, the first information also indicates the second physical layer bit rate, so that the terminal device adjusts the transmission rate of the second medium based on the second physical layer bit rate.

In a possible design, the first information occupies N bits, and the values represented by the N bits are related to a rate set. Correspondingly, the rate combination includes a candidate rate for each of M media running on the terminal device, M is a positive integer greater than or equal to 2, and the M media includes the first media and the second media. For example, in the rate combination corresponding to N bits, the candidate rate of the first medium is the first physical layer bit rate, and the candidate rate of the second medium is the second physical layer bit rate.

That is to say, the first information indicates the first physical layer bit rate of the first media and the second physical layer bit rate of the second media by indicating a rate combination.

In a possible design, the first information includes first indication information and a first adjustment factor. The first indication information indicates the physical layer bit rate of the first medium and the physical layer bit rate of the second medium, and the first adjustment factor includes a first rate adjustment factor of the first medium and a second rate adjustment factor of the second medium. The physical layer bit rate of the first medium and the first rate adjustment factor are used to determine the first physical layer bit rate, and the physical layer bit rate and the second rate adjustment factor of the second medium are used to determine the second physical layer bit rate. That is to say, the first information indicates the first physical layer bit rate of the first media and the second physical layer bit rate of the second media by indicating the rate combination and the adjustment factor.

In a possible design, the first indication information occupies N bits in the first information, and the values represented by the N bits correspond to a rate set, and the rate set includes each of the M media running on the terminal device. A candidate rate, M is a positive integer greater than or equal to 2, and the M media include the first media and the second media.

In a possible design, the first adjustment factor occupies L bits in the first information, and L is a positive integer less than or equal to M.

In a possible design, the first information includes type information of the first media, so that the terminal device knows what kind of media the transmission rate to be adjusted is.

In a possible design, the first information includes a first physical layer bit rate, so that the terminal device reads the first physical layer bit rate from the first information.

In a possible design, the first information includes a differential rate of the first medium running on the terminal device. The differential rate is the difference between the bit rate of the first physical layer and the predetermined bit rate to reduce signaling overhead.

In a possible design, before the first network device sends the first information to the terminal device, the method further includes: the first network device receives the second information from the terminal device. The second information at least indicates the terminal device's expected rate for the first media, and the expected rate of the first media is used by the first network device to determine the first physical layer bit rate to meet the requirements of the terminal device.

In a possible design, before the first network device receives the second information from the terminal device, the method further includes: the first network device receives configuration information from the second network device. Wherein, the configuration information includes at least one of the following: type information of M types of media running on the terminal device, information of at least two rate combinations, each of the at least two rate combinations includes one of each of the M types of media. The candidate rate, M is a positive integer greater than or equal to 2, and the M media include the first media to configure parameters for the first network device.

In the second aspect, a service rate adjustment method is provided. The execution subject of this method may be a terminal device or a chip applied in the terminal device. The following description takes the execution subject being a terminal device as an example. The method includes: a terminal device receiving first information from a first network device. The first information indicates the first physical layer bit rate of the first media running on the terminal device, and the terminal device is wirelessly connected to the first network device. The terminal device sends the first media to the service server at the first transmission rate, and/or the terminal device receives the first media from the service server at the first transmission rate. Wherein, the first transmission rate is determined based on the first physical layer bit rate.

In a possible design, the method further includes: the terminal device sends the second media to the service server at the second transmission rate, and/or the terminal device receives the second media from the service server at the second transmission rate. Among them, the second transmission speed The rate is determined based on the second physical layer bit rate, and the first information also indicates the second physical layer bit rate of the second media running on the terminal device.

In one possible design, the first information occupies N bits, and the values represented by the N bits correspond to a rate set. The rate set includes a candidate rate for each of the M media running on the terminal device, M is a positive integer greater than or equal to 2, and the M media include the first media and the second media.

In a possible design, the first information includes first indication information and a first adjustment factor. The first indication information indicates the physical layer bit rate of the first medium and the physical layer bit rate of the second medium, and the first adjustment factor includes a first rate adjustment factor of the first medium and a second rate adjustment factor of the second medium. The physical layer bit rate of the first medium and the first rate adjustment factor are used to determine the first physical layer bit rate, and the physical layer bit rate and the second rate adjustment factor of the second medium are used to determine the second physical layer bit rate.

In a possible design, the first information includes type information of the first media.

In a possible design, the first information includes a first physical layer bit rate.

In a possible design, the first information includes a differential rate of the first medium running on the terminal device. Wherein, the differential rate is the difference between the first physical layer bit rate and the predetermined bit rate.

In a possible design, before the terminal device receives the first information from the first network device, the method further includes: the terminal device sends the second information to the first network device. The second information at least indicates the terminal device's expected rate for the first media, and the expected rate of the first media is used by the first network device to determine the first physical layer bit rate.

In a possible design, the terminal device sends the first media to the service server through the third information at the first transmission rate. Wherein, the third information also includes information of the first codec format, and the first codec format is at least used for decoding the first media in the service server. And/or, the terminal device receives the first media from the service server through the fourth information at the first transmission rate. The fourth information also includes information on a first codec format, and the first codec format is at least used for decoding the first media on the terminal device.

In a possible design, before the terminal device receives the first media from the service server through the fourth information at the first transmission rate, the method further includes: the terminal device sends the fifth information to the service server. The fifth information includes information for the service server to determine the first codec format, and the fifth information is determined by the terminal device based on the first physical layer bit rate, so that the service server uses the first codec format during downlink transmission. coding.

In a possible design, the fifth information indicates the first codec format. That is to say, the service server can perform encoding using the codec format reported by the terminal device (ie, the first codec format).

In a possible design, the fifth information indicates the second codec format. Wherein, the physical layer bit rate corresponding to the second codec format is greater than or equal to the physical layer bit rate corresponding to the first codec format.

That is to say, the service server can independently select a codec format, that is, the first codec format, for encoding based on the codec format reported by the terminal device (ie, the second codec format).

In a possible design, the fifth information includes a field in the real-time transmission protocol RTP message, and the field is used to indicate a codec format of a media, and the media includes the first media.

In the third aspect, a service rate adjustment method is provided. The execution subject of this method can be a business server or a chip applied in the business server. The following description takes the execution subject as a business server as an example. The method includes: the service server receives fifth information from the terminal device. The fifth information includes information used to determine the first codec format. The service server sends the first media to the terminal device at a first transmission rate. Wherein, the first media is a media running on the terminal device, and the first transmission rate is determined based on the first codec format.

That is to say, after the service server determines the first codec format based on the fifth information, it can also determine the first transmission rate, thereby adjusting the downlink transmission rate of the first media between the terminal device and the service server.

In a possible design, the fifth information indicates the first codec format.

In a possible design, the fifth information is carried in a field in the real-time transmission protocol RTP message, and the field is used to indicate a codec format of a media, and the media includes the first media.

In a possible design, the service server sends the first media to the terminal device through the fourth information at the first transmission rate. The fourth information also includes information on a first codec format, and the first codec format is at least used for decoding the first media on the terminal device.

The fourth aspect provides a service rate adjustment method. The execution subject of this method can be a business server or a chip applied in the business server. The following description takes the execution subject as a business server as an example. The method includes: the service server receives first media from the terminal device through third information at a first transmission rate. Wherein, the third information also includes information of the first codec format. The service server uses the first codec format to decode the first media.

The fifth aspect provides a service rate adjustment method. The execution subject of this method may be a terminal device or a chip applied in the terminal device. The following description takes the execution subject being a terminal device as an example. The method includes: a terminal device receiving first information from a first network device. Wherein, the first information indicates the change amount of the physical layer bit rate between the first network device and the terminal device. The terminal device sends the first media to the service server at a first transmission rate, and/or the terminal device receives the first media from the service server at a first transmission rate. Wherein, the first transmission rate is determined based on the variation of the physical layer bit rate.

Even if at least two media are running on the terminal device at the same time, the media whose transmission rate needs to be adjusted can be determined as the first media based on the first information, and then the first media can be adjusted between the terminal device and the service server based on the first physical layer bit rate. transmission rate between.

In a possible design, the method further includes: the terminal device sends the second media to the service server at the second transmission rate, and/or the terminal device receives the second media from the service server at the second transmission rate. Wherein, the second transmission rate is determined based on the physical layer bit rate variation.

That is to say, based on the change amount of the physical layer bit rate, the terminal device can not only determine the first physical layer bit rate, but also determine the second physical layer bit rate, so that the terminal device adjusts the third physical layer bit rate based on the second physical layer bit rate. 2. The transmission rate of the media.

In a possible design, before the terminal device receives the first media from the service server through the fourth information at the first transmission rate, the method further includes: the terminal device sends the fifth information to the service server. The fifth information includes information used by the service server to determine the first codec format, and the fifth information is determined by the terminal device based on the physical layer bit rate change.

In a possible design, the fifth information indicates the first codec format.

A sixth aspect provides a communication device, which may be the first network device in the above-mentioned first aspect or any possible design of the first aspect, or a chip that implements the function of the above-mentioned first network device; the communication device The device includes corresponding modules, units, or means (means) for implementing the above method. The modules, units, or means can be implemented by hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the above functions.

The communication device includes a processing unit, a sending unit and a receiving unit. Wherein, the processing unit is used to determine the first physical layer bit rate of the first media running on the terminal device. Wherein, the terminal equipment and the communication device are wirelessly connected. The sending unit is used to send the first information to the terminal device. Wherein, the first information indicates the first physical layer bit rate of the first media running on the terminal device, and the first physical layer bit rate is used to determine the transmission rate of the first media running on the terminal device between the terminal device and the service server. .

In a possible design, the processing unit is also used to determine the second physical layer bit rate of the second media running on the terminal device. The first information also indicates the second physical layer bit rate of the second media running on the terminal device. The second physical layer bit rate is used to determine the transmission of the second media running on the terminal device between the terminal device and the service server. rate.

In one possible design, the first information occupies N bits, and the values represented by the N bits correspond to a rate set. The rate set includes a candidate rate for each of the M media running on the terminal device, M is a positive integer greater than or equal to 2, and the M media include the first media and the second media. For example, in the rate combination corresponding to N bits, the candidate rate of the first medium is the first physical layer bit rate, and the candidate rate of the second medium is the second physical layer bit rate.

In a possible design, the receiving unit is also used to receive the second information from the terminal device before the sending unit sends the first information to the terminal device. The second information at least indicates the terminal device's expected rate for the first medium. The expected rate of the first medium is used by the communication device to determine the first physical layer bit rate to meet the requirements of the terminal device.

In a possible design, the receiving unit is further configured to receive configuration information from the second network device before receiving the second information from the terminal device. The configuration information includes at least one of the following: type information of M types of media running on the terminal device, information of at least two rate combinations, each of the at least two rate combinations includes one of the M types of media A candidate rate for each media, M is a positive integer greater than or equal to 2, and the M media include the first media.

A seventh aspect provides a communication device, which may be a terminal device in the above second aspect or any possible design of the second aspect, or a chip that implements the functions of the above terminal device; the communication device includes a device that implements the above The module, unit, or means (means) corresponding to the method can be implemented by hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the above functions.

The communication device includes a processing unit, a sending unit and a receiving unit. Wherein, the receiving unit is used to receive the first information from the first network device. Wherein, the first information indicates the first physical layer bit rate of the first medium running on the communication device, and the communication device is wirelessly connected to the first network device. The sending unit is used to send the first media to the service server at the first transmission rate, and/or the receiving unit is used to receive the first media from the service server at the first transmission rate. Wherein, the first transmission rate is determined based on the first physical layer bit rate. The processing unit is used to control the receiving unit to perform the above processing, or to control the receiving unit and the sending unit to perform the above processing.

In a possible design, the sending unit is also configured to send the second media to the business server at the second transmission rate, and/or the receiving unit is also configured to receive the second media from the business server at the second transmission rate. . Wherein, the second transmission rate is determined based on the second physical layer bit rate, and the first information also indicates the second physical layer bit rate of the second medium running on the communication device.

In a possible design, the first information occupies N bits, and the values represented by the N bits correspond to a rate set. The rate set includes a candidate rate for each of M media running on the communication device, M is a positive integer greater than or equal to 2, and the M media include the first media and the second media.

In a possible design, the first information includes a differential rate of the first medium running on the communication device. Wherein, the differential rate is the difference between the first physical layer bit rate and the predetermined bit rate.

In a possible design, the sending unit is also configured to send the second information to the first network device before the receiving unit receives the first information from the first network device. The second information at least indicates an expected rate of the first medium by the communication device, and the expected rate of the first medium is used by the first network device to determine the first physical layer bit rate.

In a possible design, the sending unit is configured to send the first media to the service server through the third information at a first transmission rate. Wherein, the third information also includes information of the first codec format, and the first codec format is at least used for decoding the first media in the service server. And/or, a receiving unit configured to receive the first media from the service server through the fourth information at the first transmission rate. Wherein, the fourth information also includes information of a first codec format, and the first codec format is at least used for decoding of the first media in the communication device.

In a possible design, the sending unit is also configured to send the fifth information to the business server before the receiving unit receives the first media from the business server through the fourth information at the first transmission rate. The fifth information includes information for the service server to determine the first codec format, and the fifth information is determined by the communication device based on the first physical layer bit rate, so that the service server uses the first codec format during downlink transmission. coding.

In a possible design, the fifth information indicates the first codec format.

In a possible design, the fifth information includes a field in the real-time transport protocol RTP message, and the field is used to indicate Indicates a codec format of a media, and the media includes the first media.

An eighth aspect provides a communication device, which may be a business server in the above third aspect or any possible design of the third aspect, or a chip that implements the above business server function; the communication device includes a device that implements the above The module, unit, or means (means) corresponding to the method can be implemented by hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the above functions.

The communication device includes a processing unit, a sending unit and a receiving unit. Wherein, the receiving unit is used to receive the fifth information from the terminal device. The fifth information includes information used to determine the first codec format. A sending unit, configured to send the first media to the terminal device at a first transmission rate. Wherein, the first media is a media running on the terminal device, and the first transmission rate is determined based on the first codec format. The control unit is used to control the receiving unit to perform the above processing, and to control the sending unit to perform the above processing.

In a possible design, the fifth information indicates the first codec format.

In a possible design, the sending unit is configured to send the first media to the terminal device through fourth information at a first transmission rate. The fourth information also includes information on a first codec format, and the first codec format is at least used for decoding the first media on the terminal device.

A ninth aspect provides a communication device, which may be a business server in the fourth aspect or any possible design of the fourth aspect, or a chip that implements the above business server function; the communication device includes a device that implements the above The module, unit, or means (means) corresponding to the method can be implemented by hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the above functions.

The communication device includes a processing unit and a receiving unit. Wherein, the receiving unit is configured to receive the first media from the terminal device through the third information at the first transmission rate. Wherein, the third information also includes information of the first codec format. A processing unit configured to decode the first media using the first codec format.

In a tenth aspect, a communication device is provided, which may be a terminal device in the fifth aspect or any of the possible designs of the fifth aspect, or a chip that implements the functions of the above terminal device; the communication device includes a device that implements the above The module, unit, or means (means) corresponding to the method can be implemented by hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the above functions.

The communication device includes a processing unit and a receiving unit. Wherein, the receiving unit is used to receive the first information from the first network device. Wherein, the first information indicates the physical layer bit rate variation between the first network device and the unit. A sending unit, configured to send the first media to the service server at a first transmission rate, and/or a receiving unit, configured to receive the first media from the service server at a first transmission rate. Wherein, the first transmission rate is determined based on the variation of the physical layer bit rate.

In a possible design, the sending unit is also configured to send the second media to the business server at the second transmission rate, and/or the receiving unit is also configured to receive the second media from the business server at the second transmission rate. . Among them, the second transmission The rate is determined based on the physical layer bit rate variation.

In a possible design, the sending unit is also configured to send the fifth information to the business server before the receiving unit receives the first media from the business server through the fourth information at the first transmission rate. The fifth information includes information used by the service server to determine the first codec format, and the fifth information is determined by the communication device based on the physical layer bit rate change.

In a possible design, the fifth information indicates the first codec format.

In an eleventh aspect, a communication device is provided. The communication device includes: a processor and a memory; the memory is used to store computer instructions, and when the processor executes the instructions, the communication device causes the communication device to execute any of the above aspects or the first network in any possible design of any aspect. The method performed by the device. The communication device may be the first network device in the above-mentioned first aspect or any possible design of the first aspect, or a chip that implements the function of the above-mentioned first network device.

In a twelfth aspect, a communication device is provided. The communication device includes: a processor; the processor is coupled to a memory, and is used to read instructions in the memory and execute them, so that the communication device performs any of the above aspects or any possible design of any aspect. The method performed by the first network device. The communication device may be the first network device in the above-mentioned first aspect or any possible design of the first aspect, or a chip that implements the function of the above-mentioned first network device.

In a thirteenth aspect, a chip is provided. The chip includes processing circuits and input and output interfaces. The input and output interface is used to communicate with a module outside the chip. For example, the chip may be a chip that implements the first network device function in the above-mentioned first aspect or any possible design of the first aspect. The processing circuit is used to run computer programs or instructions to implement the method in the above first aspect or any possible design of the first aspect.

In a fourteenth aspect, a communication device is provided. The communication device includes: a processor and a memory; the memory is used to store computer instructions. When the processor executes the instructions, the communication device causes the communication device to perform any of the above aspects or any aspect required by the terminal equipment in any possible design. method of execution. The communication device may be the terminal equipment in the above-mentioned second aspect or any possible design of the second aspect, or the communication device may be the terminal equipment in the above-mentioned fifth aspect or any possible design of the fifth aspect, or A chip that implements the above terminal equipment functions.

In a fifteenth aspect, a communication device is provided. The communication device includes: a processor; the processor is coupled to a memory, and is used to read instructions in the memory and execute them, so that the communication device performs any of the above aspects or any possible design of any aspect. The method executed by the terminal device. The communication device may be the terminal equipment in the above-mentioned second aspect or any possible design of the second aspect, or be the terminal equipment in the above-mentioned fifth aspect or any possible design of the fifth aspect, or implement the above-mentioned terminal equipment. Functional chip.

In a sixteenth aspect, a chip is provided. The chip includes processing circuits and input and output interfaces. The input and output interface is used to communicate with modules outside the chip. For example, the chip can be used to implement the second aspect or any one of the second aspects. A chip capable of designing terminal device functions. The processing circuit is used to run computer programs or instructions to implement the above second aspect or any method in the possible design of the second aspect. For another example, the chip may be a chip that implements the function of the terminal device in the fifth aspect or any possible design of the fifth aspect. The processing circuit is used to run computer programs or instructions to implement the above fifth aspect or any method in the possible design of the fifth aspect.

In a seventeenth aspect, a communication device is provided. The communication device includes: a processor and a memory; the memory is used to store computer instructions. When the processor executes the instructions, the communication device causes the communication device to perform any of the above aspects or any possible aspect of the business server in the design. method of execution. The communication device may be a service server in the above-mentioned third aspect or any possible design of the third aspect, or the communication device may be a service server in the above-mentioned fourth aspect or any possible design of the fourth aspect, or A chip that implements the above business server functions.

In an eighteenth aspect, a communication device is provided. The communication device includes: a processor; the processor is coupled to a memory, and is used to read instructions in the memory and execute them, so that the communication device performs any of the above aspects or any possible design of any aspect. The method executed by the business server. The communication device may be a business server in the above third aspect or any possible design of the third aspect, or the communication device may be a business server in the above third aspect or any possible design of the third aspect, or A chip that implements the above business server functions.

In a nineteenth aspect, a chip is provided. The chip includes processing circuits and input and output interfaces. The input and output interface is used to communicate with a module outside the chip. For example, the chip may be a chip that implements the business server function in the above third aspect or any possible design of the third aspect. The processing circuit is used to run computer programs or instructions to implement the method in the above third aspect or any possible design of the third aspect. For another example, the chip may be a chip that implements the business server function in the fourth aspect or any possible design of the fourth aspect. The processing circuit is used to run computer programs or instructions to implement the above fourth aspect or any method in the possible design of the fourth aspect.

In a twentieth aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores instructions, which when run on a computer, enable the computer to perform any of the methods in any of the above aspects.

A twenty-first aspect provides a computer program product containing instructions that, when run on a computer, enable the computer to perform any of the methods of any of the above aspects.

In a twenty-second aspect, a circuit system is provided. The circuitry includes processing circuitry configured to perform a method as in any one of the above aspects.

Among them, the technical effects brought by any one of the designs in the sixth to twentieth aspects can be referred to the beneficial effects in the corresponding methods provided above, and will not be described again here.

Description of the drawings

Figure 1a is a schematic architectural diagram of a communication system applied in an embodiment of the present application;

Figure 1b is an architectural schematic diagram of yet another communication system applied in an embodiment of the present application;

Figure 2 is a schematic flow chart of a service rate adjustment method provided by an embodiment of the present application;

Figure 3a is a schematic diagram of a signaling format provided by an embodiment of the present application;

Figure 3b is a schematic diagram of yet another signaling format provided by an embodiment of the present application;

Figure 4a is a schematic flow chart of yet another service rate adjustment method provided by an embodiment of the present application;

Figure 4b is a schematic flow chart of yet another service rate adjustment method provided by an embodiment of the present application;

Figure 4c is a schematic flow chart of yet another service rate adjustment method provided by an embodiment of the present application;

Figure 5a is a schematic diagram of another signaling format provided by an embodiment of the present application;

Figure 5b is a schematic diagram of another signaling format provided by an embodiment of the present application;

Figure 5c is a schematic diagram of another signaling format provided by an embodiment of the present application;

Figure 6a is a schematic diagram of another signaling format provided by an embodiment of the present application;

Figure 6b is a schematic diagram of another signaling format provided by an embodiment of the present application;

Figure 7a is a schematic flow chart of yet another service rate adjustment method provided by an embodiment of the present application;

Figure 7b is a schematic diagram of another signaling format provided by an embodiment of the present application;

Figure 7c is a schematic diagram of another signaling format provided by an embodiment of the present application;

Figure 7d is a schematic diagram of another signaling format provided by an embodiment of the present application;

Figure 7e is a schematic diagram of another signaling format provided by an embodiment of the present application;

Figure 7f is a schematic diagram of another signaling format provided by an embodiment of the present application;

Figure 8 is a schematic flow chart of yet another service rate adjustment method provided by an embodiment of the present application;

Figure 9 is a schematic flow chart of yet another service rate adjustment method provided by an embodiment of the present application;

Figure 10 is a schematic flow chart of yet another service rate adjustment method provided by an embodiment of the present application;

Figure 11 is a schematic flow chart of yet another service rate adjustment method provided by an embodiment of the present application;

Figure 12 is a schematic diagram of another signaling format provided by an embodiment of the present application;

Figure 13a is a schematic flow chart of yet another service rate adjustment method provided by an embodiment of the present application;

Figure 13b is a schematic diagram of another signaling format provided by an embodiment of the present application;

Figure 14 is a schematic flow chart of yet another service rate adjustment method provided by an embodiment of the present application;

Figure 15a is a schematic diagram of another signaling format provided by an embodiment of the present application;

Figure 15b is a schematic diagram of another signaling format provided by an embodiment of the present application;

Figure 16 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

Figure 17 is a schematic structural diagram of yet another communication device provided by an embodiment of the present application.

Detailed ways

The terms “first” and “second” in the description of this application and the drawings are used to distinguish different objects, or to distinguish different processes on the same object, rather than to describe a specific order of objects. Furthermore, references to the terms "including" and "having" and any variations thereof in the description of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes other unlisted steps or units, or optionally also Includes other steps or units that are inherent to such processes, methods, products, or devices. It should be noted that in the embodiments of this application, words such as "exemplary" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "such as" in the embodiments of the present application is not to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the words "exemplary" or "such as" is intended to present the concept in a concrete manner. In the embodiment of this application, "more than two" includes two itself. Multiple can include two, three, or more.

The technical solutions of the embodiments of this application can be applied to various communication systems, such as fifth generation (5th generation, 5G) systems or new radio (NR) or long term evolution (long term evolution, LTE) systems, etc. The technical solution provided by this application can also be applied to future communication systems, such as the sixth generation mobile communication system. The technical solutions of the embodiments of this application can also be applied to device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-to-machine (M2M) communication, and machine-to-machine (M2M) communication. Type communication (machine type communication, MTC), and Internet of things (Internet of things, IoT) communication system or other communication systems.

In order to facilitate understanding of the embodiments of the present application, the communication applicable to the embodiments of the present application is first briefly introduced in conjunction with Figure 1a and Figure 1b system.

As an exemplary illustration, Figure 1a shows a schematic architectural diagram of a 5G system to which embodiments of the present application are applicable. As shown in Figure 1a, the network architecture 1000 includes terminal equipment (terminal equipment) 110, access network (AN) equipment 120, user plane function (UPF) network element 130 and edge application server (edge application server, EAS)140.

Among them, the terminal equipment 110 can also be called user equipment (user equipment), terminal device, access terminal, user unit, user station, mobile station, mobile station (mobile station, MS), mobile terminal (mobile terminal, MT) , remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device, etc. The terminal device 110 may be a device that provides voice/data connectivity to a user, such as a handheld device, a vehicle-mounted device, etc. with wireless connection capabilities. Currently, some examples of terminal devices include: mobile phones, tablets (pads), computers with wireless transceiver functions (such as laptops, handheld computers, etc.), mobile Internet devices (mobile internet device, MID), virtual Reality (virtual reality, VR) equipment, augmented reality (AR) equipment, wireless terminals in industrial control (industrial control), wireless terminals in self-driving (self driving), remote medical (remote medical) Wireless terminals, wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, cellular phones, Cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communications capabilities, computing devices, or Other processing equipment, vehicle-mounted equipment, wearable equipment connected to the wireless modem, terminal equipment in the 5G network or terminal equipment in the future evolved public land mobile communication network (public land mobile network, PLMN), etc.

In addition, the terminal device 110 may also be a terminal device in an Internet of things (IoT) system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-computer interconnection and object interconnection. IoT technology can achieve massive connections, deep coverage, and power saving for terminal devices through narrowband (NB) technology, for example.

In addition, the terminal device 110 may also include a smart printer, a train detector, etc., and its main functions include collecting data, receiving control information and downlink data from the access network device 120, and sending electromagnetic waves to transmit uplink data to the access network device 120.

It should be understood that the terminal device 110 may be any device that can access the network. The terminal device 110 and the access network device 120 may communicate with each other using some air interface technology.

Optionally, the terminal device 110 may be used to act as an access network device. For example, terminal devices may act as a scheduling entity that provides sidelink signals between terminal devices in V2X or D2D, etc. For example, cell phones and cars use sidelink signals to communicate with each other. Communicate between cellular phones and smart home devices without the need to communicate between devices through an access network.

Among them, the access network device 120 may also be called a radio access network (radio access network, RAN) device. The access network device 120 is used to provide network access functions for authorized terminal devices 110 in a specific area, and can use transmission tunnels with different service qualities according to the level of the terminal device 110, business requirements, etc. The access network device 120 can manage wireless resources, provide access services to the terminal device 110, and complete the forwarding of control information and user data between the terminal device and the core network. The access network device 120 can also be understood as a traditional network device. Base station.

For example, the access network device 120 in the embodiment of the present application may be any communication device with a wireless transceiver function used to communicate with the terminal device 110 . The access network equipment includes but is not limited to evolved NodeB (evolved NodeB, eNB), or the next generation base station (next generation NodeB, gNB) in the NR system, or the transmission reception point (TRP), one or a group of base stations (including multiple antenna panels) in the 5G system Antenna panels, or network nodes that constitute gNB or TRP, such as baseband unit (BBU), or distributed unit (DU), etc.

In some deployments, gNB may include centralized units (CUs) and DUs. The gNB may also include an active antenna unit (AAU). CU implements some functions of gNB, and DU implements some functions of gNB. For example, CU is responsible for processing non-real-time protocols and services, implementing radio resource control (RRC), and packet data convergence protocol (PDCP) layer functions. DU is responsible for processing physical layer protocols and real-time services, and implementing the functions of the radio link control (RLC) layer, media access control (MAC) layer and physical (physical, PHY) layer. AAU implements some physical layer processing functions, radio frequency processing and active antenna related functions. Since RRC layer information will eventually become PHY layer information, or transformed from PHY layer information, in this architecture, high-level signaling, such as RRC layer signaling, can also be considered to be sent by DU of. It can be understood that the access network device 120 may be a device including one or more of CU, DU, and AAU. In addition, the CU can be divided into access network equipment in the access network, or the CU can be divided into access network equipment in the core network (core network, CN), which is not limited in this application.

Among them, UPF network element 130 mainly includes the following functions: data packet routing and transmission, packet detection, business usage reporting, quality of service (QoS) processing, legal interception, uplink packet detection, downlink data packet storage and other user interfaces related functions.

Among them, EAS140 is an application server deployed in edge data network (EDN). The applications running on the server can also be called "application instances", specifically referring to server applications, such as augmented reality (AR), virtual reality (VR) and other extended reality (XR) deployments Instances running on edge data networks. An application (or business) can deploy one or more EASs in EDN. EASs deployed and running in different EDNs can be considered as different EASs of one application. They can share a domain name or can be deployed with Applications on the cloud use different domain names. The domain name can be a fully qualified domain name (FQDN), an arbitrary Internet Protocol (IP) address, or a different IP address. .

It can be understood that EAS can also be called edge applications, application instances, edge application instances, multi-access edge computing (MEC) applications, EAS functions, etc.

Among them, EDN can be a local data center (local part of DN). EDN includes edge enabler server (EES) and multiple EAS. Each EDN has a specific service scope.

Optionally, as shown in Figure 1b, the network architecture can also include but is not limited to the following network elements: access and mobility management function (AMF) network element, session management function, SMF) network element, network exposure function (NEF) network element, edge application server discovery function (EASDF) network element, network repository function (NRF) network introduced in edge computing Elements, policy control function (PCF) network elements, unified data management (UDM) network elements, application function (AF) network elements, etc.

Among them, AMF network elements mainly include the following functions: connection management, mobility management, registration management, access authentication and authorization, reachability management, security context management and other access and mobility related functions.

Among them, the SMF network element is mainly used for session management, IP address allocation and management of terminal equipment, selection of endpoints for manageable user plane functions, policy control and charging function interfaces, and downlink data notification.

Among them, NEF network elements mainly include the following functions: services and capabilities provided by the secure and open 3rd generation partnership project (3GPP) network functions; transformation or translation of information interacting with AF network elements and internal network function interaction Information, such as the service identifier of the AF network element and internal 5G core network information such as data network name (DNN), single network slice selection assistance information (S-NSSAI), etc.

Among them, the EASDF network element is mainly responsible for discovering the EAS network element, processing domain name system (DNS) messages according to the instructions of the SMF network element, terminating DNS security, etc.

Among them, NRF network elements mainly include the following functions: service discovery function, maintaining NF text of available network function (network function, NF) instances and the services they support.

Among them, PCF network elements are used to guide network behavior in a unified policy framework, providing policy rule information for control plane functional network elements, such as AMF network elements, SMF network elements, etc.

Among them, the AF network element is used to provide application layer information for data routing of applications, and can interact with the policy framework through the NEF network element or directly interact with the policy framework to perform policy decision request control, etc.

Among them, UDM network elements mainly include the following functions: unified data management, support for authentication credential processing in 3GPP authentication and key negotiation mechanisms, user identity processing, access authorization, registration and mobility management, subscription management, short message management, etc. .

In the embodiment of this application, UPF network element, AMF network element, SMF network element, NEF network element, EASDF network element, NRF network element, PCF network element, UDM network element and AF network element all belong to the core network equipment. Core network equipment and access network equipment can be called network equipment.

In the network architecture shown in Figure 1b, network elements can communicate with each other through the interfaces shown in the figure, and some interfaces can be implemented using non-service interfaces. As shown in Figure 1b, the terminal device and the AMF network element can interact through the N1 interface, and the interaction message can be called an N1 message (N1 Message), for example. Access network equipment and AMF network elements can interact through the N2 interface, and the N2 interface can be used for sending non-access stratum (NAS) messages. Access network equipment and UPF network elements can interact through the N3 interface, and the N3 interface can be used to transmit user plane data, etc. SMF network elements and UPF network elements can interact through the N4 interface. The N4 interface can be used to transmit information such as tunnel identification information of the N3 connection, data cache indication information, and downlink data notification messages. UPF network elements and EAS can interact through the N6 interface, which can transmit user plane data, etc.

In addition, each network element of the control plane function in Figure 1b can also communicate through the service-oriented interface. For example, the AMF network element accesses the service-oriented architecture through the Namf interface to provide corresponding services; the SMF network element accesses the service-oriented architecture through the Nsmf interface. architecture to provide corresponding services; similarly, NEF network elements, EASDF network elements, NRF network elements, PCF network elements, UDM network elements and AF network elements are connected to the service-oriented architecture through their corresponding interfaces to provide corresponding services. Here No longer. The relationship between other interfaces and each network element is shown in Figure 1b. For the sake of simplicity, they will not be described in detail here.

It should be understood that the network architecture to which the embodiments of the present application can be applied are only illustrative. The network architecture applicable to the embodiments of the present application is not limited to this. Any network architecture that can realize the functions of each of the above network elements is applicable to this application. Application examples.

It should also be understood that the AMF network elements, SMF network elements, UPF network elements, PCF network elements, etc. shown in Figure 1b can be understood as network elements used to implement different functions, and can, for example, be combined into network slices as needed. These network elements can be independent devices, or It can be integrated into the same device to implement different functions, or it can be a network element in a hardware device, a software function running on dedicated hardware, or a virtualized function instantiated on a platform (for example, a cloud platform). This application does not limit the specific form of the above network elements.

It should also be understood that the above nomenclature is only defined to facilitate the differentiation of different functions and should not constitute any limitation on this application. This application does not rule out the possibility of using other naming in 5G networks and other future networks. For example, in a 6G network, some or all of the above network elements may use the terminology used in 5G, or may adopt other names.

It should also be understood that the interface name between each network element in Figure 1a and Figure 1b is just an example. In specific implementation, the name of the interface may be other names, and this application does not specifically limit this. In addition, the names of the messages (or signaling) transmitted between the various network elements are only examples and do not constitute any limitation on the function of the messages themselves.

In order to facilitate understanding of the embodiments of the present application, the relevant technologies involved in the present application are briefly introduced below.

1. XR

XR refers to a human-computer interaction environment that is a combination of real and virtual, generated through computer technology and wearable devices. XR is proposed based on augmented reality (AR), virtual reality (VR) and mixed reality (MR). In other words, to avoid conceptual confusion, XR is actually a general term that includes AR, VR and MR. The purpose of XR business is to use high-speed networks and 360-degree imaging and other technologies to achieve an interactive and immersive experience.

Among them, XR services need to transmit multiple media at the same time, such as different audio and video. XR services are transmitted through DASH technology. For example, the service server divides the business data of the XR service into different fragments based on the media type of the XR service. Among them, different media fragments are transmitted between the terminal device and the service server using different application layer bit rates.

It should be understood that the media may also have other descriptions, such as media data and media flow. In the embodiment of this application, the media is taken as an example for description.

2. Codec format

Codec format is a data compression/decompression technology. For the same codec format, it can be used by the sending device to encode the media to be sent, and it can also be used by the receiving device to decode the received media. The codec format may also have other descriptions, such as codec type. In the embodiment of this application, the codec format is taken as an example for introduction. Below, we take audio signals and video signals as examples to introduce the encoding and decoding formats:

For audio signals, the codec format includes at least one of the following: adaptive multi-rate-narrow band (AMR-NB), or adaptive multi-rate-wide band (adaptive multi-rate-wide band) ,AMR-WB).

For video signals, the codec format includes at least one of the following:

The first item is high efficiency video coding (HEVC).26x, such as H.263, H.264, or H.265.

The second item is the Moving Picture Experts Group (MPEG)x encoding format, such as MPEG1, MPEG2, or MPEG4.

Among them, video signals can be distinguished in different ways. For example, according to the position of the image of the video frame within the line of sight of the terminal device, the video frame can be divided into a field of view (FoV) area and a non-field of view area. The field of view area refers to the field of view area measured from the angle of the visual area on both sides starting from the focus of the field of view within the line of sight of the terminal device at a given moment. The non-viewing area refers to other areas in the video frame except the visual field area. In the XR business, the image quality requirements for the field of view area and the non-field of view area are different. The picture quality in the field of view area has high requirements, but the picture in the non-field of view area Pieces can become blurred and faded. In other words, the resolution requirements of the visual field area and the non-viewing area are different, and the corresponding encoding and decoding formats will also be different.

3. Access network bitrate recommendation (ANBR) signaling

ANBR signaling is signaling in the Internet protocol multimedia subsystem (IMS). It is used to indicate the physical layer bit rate recommended by the network device to the terminal device to adjust the XR service between the terminal device and the service server. Transmission rate. As an example, ANBR signaling is introduced in detail with reference to Figure 2 and Figure 3b:

Referring to Figure 2, IMS is connected to evolved packet core (evolved packet core, EPC) device 1 and EPC device 2 respectively. The EPC device 1 is also connected to the access network device 1, and the access network device 1 is also connected to the terminal device 1 for communication. The EPC device 2 is also connected to the access network device 2, and the access network device 2 is also connected to the terminal device 2 for communication. Correspondingly, the terminal device 1 and the terminal device 2 can communicate with each other via the EPC device through IMS. Among them, EPC equipment is the core network equipment in the 4G network. The steps performed by each device are as follows:

Step 1: Terminal device 2 sends message 1 to terminal device 1. Correspondingly, terminal device 1 receives message 1 from terminal device 2.

Among them, message 1 is used to request the maximum physical layer bit rate R0 (for example, it can be recorded as, Request max R0).

For terminal device 1, after receiving message 1, terminal device 1 executes step 2:

Step 2: Terminal device 1 sends message 2 to terminal device 2. Correspondingly, terminal device 2 receives message 2 from terminal device 1 .

Among them, message 2 is used to notify the maximum physical layer bit rate R0 (for example, it can be recorded as, Notify max R0).

Step 3: Terminal device 1 and terminal device 2 transmit media using the physical layer bit rate R0.

For example, terminal device 1 sends media to terminal device 2 at a physical layer bit rate R0, and accordingly, terminal device 2 receives media from terminal device 1 at a physical layer bit rate R0. And/or, the terminal device 2 sends the media to the terminal device 1 at the physical layer bit rate R0, and accordingly, the terminal device 1 receives the media from the terminal device 2 at the physical layer bit rate R0.

For example, the media transmitted in step 3 can be carried in a real-time transport protocol (RTP) message. During the transmission process shown in step 3, if terminal device 1 sends media to terminal device 2 at the physical layer bit rate R0, it can be recorded as, RTP media flow with UE-1 R0 send rate.

During the transmission process, the access network device 1 determines that the wireless channel status has deteriorated, and/or the network congestion status has deteriorated, and the access network device 1 determines a recommended physical layer bit rate R1 for the terminal device 1. Among them, R1<R0. Then, access network device 1 performs step 4:

Step 4: Access network device 1 sends ANBR signaling to terminal device 1. Correspondingly, the terminal device 1 receives the ANBR signaling from the access network device 1 .

Among them, ANBR signaling is used to indicate a physical layer bit rate R1 recommended by the access network device 1 to the terminal device 1, so that the terminal device 1 adjusts the physical layer bit rate during uplink (UL) transmission. For example, the signaling transmitted in step 4 can be recorded as UL ANBR R1.

Among them, the format of the media access control-control element (MAC CE) of ANBR signaling is shown in Figure 3a. ANBR signaling includes a logical channel identifier (LCID) field, a downlink (DL) indication field, a bit rate field, a multiplier (X) field and a reservation (reserve, R) field. Among them, the LCID field includes 6 bits to indicate the logical channel identification. It should be understood that the bit rate indicated by ANBR signaling is applicable to the media transmitted by the logical channel. The DL indication field includes 1 bit to indicate whether the uplink transmission It's downlink transmission. The bit rate field includes 6 bits to indicate a physical layer bit rate recommended by the access network device 1. The multiplier field consists of 1 bit. For example, if the value represented by the multiplier field is 0, the recommended multiplier is 1; if the value represented by the multiplier field is 1, the recommended multiplier is a specified multiple. The reserved field includes 2 bits, or is described as, the reserved field includes 2 reserved bits.

It should be understood that, corresponding to the terminal device 1, for each media, after the application layer is encoded through the codec format, it sequentially passes through the service data adaptation protocol (service data adaptation protocol, SDAP) layer, PDCP layer, RLC layer, and MAC layer. After the PHY layer and the PHY layer, the encoded media is sent to the terminal device 2 through the physical channel. For details, see the introduction of steps 3 and 6. Among them, the LCID in ANBR signaling is used to identify a certain logical channel. The media in step 6 is transmitted from the RLC layer to the MAC layer on the terminal device 1 side through the logical channel.

Optionally, if during the uplink transmission process, for the terminal device 1, before the terminal device 1 performs step 4, the terminal device 1 sends an access network bitrate recommendation query to the access network device 1. , ANBRQ) signaling. Correspondingly, the access network device 1 receives the ANBRQ signaling from the terminal device 1.

Among them, the ANBRQ signaling includes the physical layer bit rate expected and recommended by the terminal device 1.

Among them, the format of MAC CE for ANBRQ signaling is shown in Figure 3b. ANBRQ signaling includes an LCID field, an uplink (UL) indication field, a bit rate field, a multiplier (X) field and a reserved field. Among them, the LCID field, bit rate field, multiplier (X) field and reserved field can be found in the introduction of ANBR signaling and will not be described again here.

For access network device 1, access network device 1 determines a recommended physical layer bit rate based on the physical layer bit rate in ANBRQ, as well as real-time wireless channel status and network congestion status, and provides it to terminal device 1 through ANBR , which is the introduction of step 4, and will not be repeated here.

Optionally, if during downlink transmission, for terminal equipment 1, terminal equipment 1 does not need to send ANBRQ signaling. For the access network device 1, the access network device 1 only needs to perform step 4.

Step 5: Terminal device 1 makes a decision.

For example, the terminal device 1 uses the physical layer bit rate R1 indicated by the ANBR signaling as the physical layer bit rate for uplink transmission.

Step 6: Terminal device 1 and terminal device 2 transmit media using the physical layer bit rate R1.

For example, the implementation process of step 6 can be referred to the introduction of step 3, which will not be described again here.

For example, during the transmission process shown in step 6, if terminal device 1 sends media to terminal device 2 at the physical layer bit rate R1, it can be recorded as, RTP media flow with UE-1 R1 send rate.

Step 7: Terminal device 1 sends message 3 to terminal device 2. Correspondingly, terminal device 2 receives message 3 from terminal device 1 .

Among them, message 3 is used to notify the maximum physical layer bit rate R1 (for example, it can be recorded as, Notify max R0).

For example, when the XR service includes video signals, message 3 can be carried in the codec mode request (CMR) field in the real-time transport control protocol (real-time transport control protocol, RTCP) message.

In the above processing flow, the physical layer bit rate recommended in ANBR signaling is one, which is suitable for scenarios where a single media is transmitted through a logical channel. In XR services, the same logical channel supports the transmission of different media at the same time, so it is impossible to finely adjust the transmission speed of different media between the terminal device and the service server based on the physical layer bit rate indicated by ANBR signaling. rate, affecting media transmission performance.

In view of this, embodiments of the present application provide two service rate adjustment methods (the first service rate adjustment method and the second service rate adjustment method), which methods can be applied to the communication system shown in Figure 1a or Figure 1b. In the embodiment of this application, the physical layer bit rate refers to the transmission rate between the terminal device and the network device (such as a base station). The initial rate, candidate rate, and expected rate mentioned below all belong to the physical layer bit rate. The transmission rate refers to the application layer bit rate between the terminal device and the service server. The transmission rate 10, transmission rate 20, first transmission rate, and second transmission rate mentioned below all belong to the application layer bit rate. In the following embodiments of this application, the names of messages between network elements or the names of parameters in the messages are just examples, and other names may also be used in specific implementations. This is explained uniformly and will not be repeated below.

Embodiment 1

Embodiment 1 mainly introduces the first service rate adjustment method. In the first service rate adjustment method, the first network device determines the medium whose transmission rate is to be adjusted. The medium whose transmission rate needs to be adjusted may be one type. For details, please refer to the introduction of the service rate adjustment method 400. The media whose transmission rate needs to be adjusted may also be multiple types. For details, please refer to the introduction of the service rate adjustment method 1000. Next, the first service rate adjustment method proposed in the embodiment of the present application will be introduced in detail with reference to Figures 4a to 13b.

In the service rate adjustment method provided by the embodiment of the present application, the first network device determines the first physical layer bit rate of the first media running on the terminal device. Wherein, the terminal device is wirelessly connected to the first network device. Afterwards, the first network device sends the first information to the terminal device. Wherein, the first information indicates the first physical layer bit rate of the first media running on the terminal device, and the first physical layer bit rate is used to determine the transmission rate of the first media running on the terminal device between the terminal device and the service server. . In this way, since the first information not only indicates the first physical layer bit rate, but also indicates the first medium, even if at least two media are running simultaneously on the terminal device, the transmission to be adjusted can be determined based on the first information. The media of the first media rate is the first media, and the transmission rate of the first media between the terminal device and the service server is adjusted based on the first physical layer bit rate. For example, when the wireless channel state deteriorates and/or the network congestion condition deteriorates, the transmission rate of the first media between the terminal device and the service server is reduced, that is, the application layer bit rate of the first media is reduced to ensure that the media Transmission reliability. On the contrary, when the wireless channel state becomes better and/or the network congestion condition becomes better, the transmission rate of the first media between the terminal device and the service server increases, that is, the application layer bit rate of the first media increases, so as to Increase media transfer rates.

As shown in Figure 4a, the service rate adjustment method 400 proposed in this embodiment of the present application includes the following steps:

S401. The terminal device, the first network device and the service server execute the QoS flow establishment process.

Exemplarily, as shown in Figure 4b, the devices involved in the QoS flow establishment process include: a terminal device, a first network device, a second network device, a third network device, a fourth network device and a service server. Taking the 5G network architecture as an example, the first network device may be the access network device in Figure 1b, such as gNB. The fourth network device may be the PCF network element in Figure 1b, the third network device may be the SMF network element in Figure 1b, and the second network device may be the AMF network element in Figure 1b. The business server can be the EAS in Figure 1b. It should be understood that in the embodiment of this application, the 5G network architecture is taken as an example to introduce each device. With the evolution of communication technology, each device may also have other names. The embodiments of this application do not limit the device names.

Illustratively, as shown in Figure 4b, S401 includes the following steps (step 1 to step 4):

Step 1: The service server sends QoS parameters to the fourth network device. Correspondingly, the fourth network device receives the QoS parameters from the service server.

Among them, the QoS parameters include: information on at least two media supported by the terminal device and the service server (as shown in Table 1), candidate rates corresponding to each of the at least two media (as shown in Table 1), at least two The initial rate corresponding to each type of media (as shown in Table 1), the codec format information supported by the terminal device and the service server, and the service quality of media transmission, such as delay, packet loss rate, etc. It should be understood that in this embodiment of the present application, the initial rate corresponding to a medium refers to the physical layer bit rate when the media is first transmitted between the terminal device and the first network device after the QoS flow is established.

For example, Table 1 shows some parameters in the QoS parameters. Table 1 is introduced as follows:

Table 1

In Table 1, there are two candidate rates for media 1, which can be understood as two physical layer bit rates supported when transmitting media 1 between the terminal device and the first network device. There are two candidate rates for media 2, which can be understood as two physical layer bit rates supported when transmitting media 2 between the terminal device and the first network device. In Table 1, there are four rate combinations, numbered 1 to 4. For example, in rate combination 1, the candidate rate of media 1 is candidate rate a1, and the candidate rate of media 2 is candidate rate b1. Candidate rates for various media in other rate combinations can be found in Table 1 and will not be described again here.

It should be understood that Table 1 takes two media (such as the above-mentioned media 1 and media 2) and each media corresponds to two candidate rates as an example for introduction. In Table 1, for any two rate combinations, at least one media candidate rate is different. Of course, the number of media types in Table 1 can be more, and there can be one or more candidate rates for each media, which is not limited in the embodiment of the present application. If the number of media types in Table 1 changes, and/or the number of candidate rates for one or more media in Table 1 changes, the number of rate combinations will also be different. When there is one candidate rate for each media in Table 1, the number of rate combinations is one. The media in Table 1 may be part of the media among the multiple media supported by the terminal device and the service server, or may be all media among the multiple media supported by the terminal device and the service server. This is not the case in the embodiment of this application. limited.

For example, Table 1 is still used as an example. Table 1 also shows the initial rate of the media, as shown in rate combination 1, that is, the initial rate adopted by media 1 and media 2 when they are transmitted between the terminal device and the first network device. rate.

It should be understood that before step 1 of S401, the terminal device and the service server negotiate the following information through session initiation protocol (SIP) signaling: the media jointly supported by the terminal device and the service server, the terminal device and the service Codec formats commonly supported by the server.

For the fourth network device, the fourth network device generates a QoS profile (QoS profile) based on the QoS parameters. Among them, the QoS profile includes QoS parameters. For the QoS profile, please refer to the relevant protocol specifications of 3GPP, which will not be described again here.

Step 2: The fourth network device sends the QoS profile to the third network device. Correspondingly, the third network device receives the QoS profile from the fourth network device.

For the third network device, during downlink transmission, the third network device performs step 3. During uplink transmission, the third network device performs step 4. Among them, steps 3 and 4 are introduced as follows:

Step 3: The third network device sends the QoS profile to the first network device through the second network device. Correspondingly, the first network device receives the QoS profile from the third network device through the second network device.

Among them, the QoS profile in step 3 is consistent with the QoS profile in step 2, and will not be described again here.

Step 4: The third network device sends the QoS rule (QoS rule) to the terminal device through the second network device. Correspondingly, the terminal device receives the QoS rule from the third network device through the second network device.

The QoS rule in step 4 is determined by the third network device based on the QoS profile. Among them, the QoS rules can be found in the relevant protocol specifications of 3GPP, which will not be described again here.

It should be understood that the parameters in the QoS profile and the parameters in the QoS rules can also be described as configuration parameters.

After the above steps 1 to 4, the QoS flow is established. For the QoS flow establishment process, please refer to related technologies and will not be described again here.

After the QoS flow is established, media transmission is performed between the terminal device and the service server, that is, S402a and/or S402b are executed. Among them, S402a and S402b are introduced as follows:

S402a. The terminal device sends at least two media to the service server. Correspondingly, the service server receives at least two media from the terminal device.

Among them, at least two media are media running on the terminal device.

Among them, the initial rates corresponding to each of the at least two media may be the same or different. For details, see the introduction in Table 1, which will not be described again here.

For example, still taking Table 1 as an example, the number of media running on the terminal device is 2, namely media 1 and media 2. S402a includes: the terminal device sends media 1 to the service server at a transmission rate of 10. Correspondingly, the service server receives media 1 from the terminal device at a transmission rate of 10. The terminal device sends media 2 to the service server at a transmission rate of 20. Correspondingly, the service server receives media 2 from the terminal device at a transmission rate of 20. Among them, the transmission rate 10 is the application layer transmission rate of media 1 between the terminal device and the service server. The transmission rate 10 is determined based on the candidate rate a1 in Table 1. The physical layer bit rate corresponding to the transmission rate 10 is less than or equal to the candidate Rate a1. The transmission rate 20 is the application layer transmission rate of media 2 between the terminal device and the service server. The transmission rate 20 is determined based on the candidate rate b1 in Table 1. The physical layer bit rate corresponding to the transmission rate 20 is less than or equal to the candidate rate b1. .

It should be noted that in S402a, the terminal device first sends at least two types of media to the first network device, and the first network device then sends at least two types of media to the service server. Correspondingly, the service server receives at least two media from the terminal device through the first network device.

S402b. The service server sends at least two media to the terminal device. Correspondingly, the terminal device receives at least two media from the service server.

Among them, the media and the transmission rate of the media involved in S402b can be found in the introduction of S402a, and will not be described again here.

It should be noted that in S402b, the service server first sends at least two types of media to the first network device, and the first network device then sends at least two types of media to the terminal device. Correspondingly, the terminal device receives at least two media from the service server through the first network device.

It should be understood that during uplink transmission, the terminal device performs S402a. During downlink transmission, the terminal device executes S402b.

In the media transmission process (such as the above S402a and/or S402b is executed), the first network device executes S403:

S403. The first network device determines the first physical layer bit rate of the first media running on the terminal device.

The first media is one of M media running on the terminal device. M is a positive integer greater than or equal to 2.

The first physical layer bit rate refers to the physical data rate when the first media is transmitted between the terminal device and the first network device. Management layer bit rate.

Illustratively, the implementation process of S403 is introduced by taking wireless channel status change as an example. As shown in Figure 4c, S403 includes the following steps:

S4031. The first network device determines the total physical layer bit rate change between itself and the terminal device.

Exemplarily, the first network device monitors successfully transmitted data packets between itself and the terminal device within a preset time period (such as 2000ms). It should be understood that S402a and S402b can be executed once or multiple times. Within the preset time period, the terminal device may perform S402a one or more times, and/or within the preset time period, the terminal device may perform S402b one or more times. Different media are transmitted between the terminal device and the service server in the form of data packets. Based on the number of successfully transmitted data packets, the first network device determines the total physical layer bit rate change R _Δ between itself and the terminal device. Among them, the total physical layer bit rate change R _Δ satisfies the following formula:
r _Δ1 +r _Δ2 +...+r _Δi +...+r _ΔM ＝R _ΔFormula (1)

Among them, R _Δ represents the total physical layer bit rate change between itself and the terminal device determined by the first network device, r _Δ1 represents the physical layer bit rate change of media 1 between the terminal device and the first network device, r _Δ2 represents the physical layer bit rate change of media 2 between the terminal device and the first network device, r _Δi represents the physical layer bit rate change of media i between the terminal device and the first network device, 1≤i≤ M, r _ΔM represents the physical layer bit rate variation of media M between the terminal device and the first network device. The number of media running on the terminal device is M, which are respectively recorded as media 1, media 2, ..., and media M. M is a positive integer greater than or equal to 2.

It can be seen from formula (1) that R _Δ represents the sum of changes in the physical layer bit rates of M media between the terminal device and the first network device. It should be understood that for the first network device, the change amount of the physical layer bit rate that the first network device can perceive is R _Δ , and it does not sense the change amount of the physical layer bit rate of each of the M media.

S4032. The first network device determines that the media to be adjusted is the first media based on the total physical layer bit rate change between itself and the terminal device and the bit rate threshold.

For example, assuming that the number of media running on the terminal device is still M, the number of bit rate thresholds is M-1, and the M-1 bit rate thresholds are different from each other. The M-1 bit rate thresholds are denoted as K ₁ , K ₂ , K ₃ , ..., K _M-1 respectively. Among them, the M-1 bit rate thresholds are arranged in order from small to large, or in order from large to small. The first network device compares the total physical layer bit rate change R _Δ to the bit rate threshold:

When the total physical layer bit rate change _RΔ satisfies formula (2), the first network device determines that the medium to be adjusted is media 1. Among them, the introduction of formula (2) is as follows:
R _Δ ≤K _1Formula (2)

Wherein, R _Δ represents the total physical layer bit rate change between the first network device and the terminal device determined by the first network device, and K ₁ represents the first threshold among the M-1 bit rate thresholds.

When the total physical layer bit rate variation _RΔ satisfies formula (3), the first network device determines that the medium to be adjusted is media 2. Among them, the introduction of formula (3) is as follows:
K ₁ <R _Δ ≤K _2Formula (3)

Among them, R _Δ represents the total physical layer bit rate change between the first network device and the terminal device determined by the first network device, K ₁ represents the first threshold among M-1 bit rate thresholds, and K ₂ represents M-1 The second threshold among the bit rate thresholds.

When the total physical layer bit rate change _RΔ satisfies formula (4), the first network device determines that the medium to be adjusted is media x. Among them, the introduction of formula (4) is as follows:
K _x-1 <R _Δ ≤K _x formula (4)

Among them, R _Δ represents the total physical layer bit rate change between the first network device and the terminal device determined by the first network device, K _x-1 represents the x-1th threshold among the M-1 bit rate thresholds, K _x Represents the xth threshold among M-1 bit rate thresholds. x is a positive integer, 2≤x≤M-1.

S4033. The first network device determines the first physical layer bit rate based on the total physical layer bit rate change between itself and the terminal device and the predetermined bit rate.

As a possible implementation manner, the predetermined bit rate includes: the initial rate of the first medium between the terminal device and the first network device. Please refer to the introduction of QoS parameters in S401, which will not be described again here.

Taking the first media as media 1 as an example, the bit rate of the first physical layer satisfies the following formula:
R _1,0 +R _Δ =R _1,1Formula (5)

Among them, R _1,0 represents the initial rate of media 1 between the terminal device and the first network device, R _Δ represents the total change in the physical layer bit rate between itself and the terminal device determined by the first network device, R _{1 ,1} represents the first physical layer bit rate of media 1.

As another possible implementation manner, when the first network device performs S4033 for the y-th time, the predetermined bit rate includes: the physical layer bit rate determined when the first network device performs S4033 for the y-1th time. where y is a positive integer greater than or equal to 3.

Taking the first medium as media 1 as an example, the first physical layer bit rate determined by the first network device when executing S4033 for the yth time satisfies the following formula:
R _1,y-1 +R _Δ =R _1,y formula (6)

Among them, R _1,y-1 represents the physical layer bit rate of media 1 determined by the first network device when executing S4033 for the y-1th time, and R _Δ represents the bit rate between itself and the terminal device determined by the first network device. The total physical layer bit rate change, R _1,y, represents the first physical layer bit rate determined by the first network device when executing S4033 for the yth time.

It should be understood that the prerequisite for determining the first physical layer bit rate of the first media based on formula (6) is that the first network device stores the physical layer bit rate determined when S4033 is executed for the y-1th time. For the first network device, the first network device can record the physical layer bit rate of the first media. For details, please refer to the introduction of S404, which will not be described again here.

For the first network device, after the first network device determines the first physical layer bit rate, the first network device performs S404:

S404. The first network device sends the first information to the terminal device. Correspondingly, the terminal device receives the first information from the first network device.

The first information indicates the first physical layer bit rate of the first media running on the terminal device. For the first physical layer bit rate, please refer to the introduction of S403, which will not be described again here.

First, through Example 1 and Example 2, the first information is introduced:

Example 1, the first information includes the following two pieces of information:

The first item is the type information of the first media. For example, the first information indicates the type of the first media through the name of the media or the number of the media. Taking media 1 as an example, the first information may include the number of media 1.

The second item is the first physical layer bit rate. For example, still taking Media 1 as an example, the first information may include R _1,1 to indicate the first physical layer bit rate of Media 1 .

In Example 1, the format of the first information is modified through the first possible implementation method and the second possible implementation method. Line introduction:

As a first possible implementation manner, the type information of the first media may occupy 1 bit in the first information, and the first physical layer bit rate may occupy 6 bits in the first information. Taking ANBR signaling as an example, the type information of the first media occupies a reserved bit in the ANBR signaling, and the first physical layer bit rate occupies the bit rate field in the ANBR signaling, as shown in Figure 5a or Figure 5b.

It should be understood that Figure 5a (or Figure 5b) is applicable to a scenario where the number of media running on the terminal device is two. The first media may be one of the two media running on the terminal device. For example, two media are running on the terminal device, which are recorded as media 1 and media 2 respectively. If the type information of the first media has a value of 0, it indicates media 1; if the type information of the first media has a value of 1, it indicates media 2. Or, conversely, if the type information of the first media has a value of 0, it represents media 2, and if the type information of the first media has a value of 1, it represents media 1.

As a second possible implementation manner, the type information of the first media may occupy 2 bits in the first information, and the first physical layer bit rate may occupy 6 bits in the first information. Taking ANBR signaling as an example, the type information of the first media occupies two reserved bits in the ANBR signaling, and the first physical layer bit rate occupies the bit rate field in the ANBR signaling, as shown in Figure 5c.

It should be understood that Figure 5c is applicable to a scenario where the number of media running on the terminal device is four. The first media may be one of four media running on the terminal device. For example, four media are running on the terminal device, which are recorded as media 1, media 2, media 3 and media 4 respectively. If the type information of the first media has a value of 00, it represents media 1; if the type information of the first media has a value of 01, it represents media 2; if the type information of the first media has a value of 10, it represents media 3; The value of the media type information is 11, which means media 4.

It should be noted that in Figures 5a, 5b and 5c, the value represented by the multiplier field is 0, that is, X=0, indicating that the multiplier is 1. Alternatively, the first physical layer bit rate may occupy 7 bits in the first information. Taking ANBR signaling as an example, the first physical layer bit rate occupies the bit rate field and the multiplier field in the ANBR signaling. The value represented by the bit rate field and the value represented by the multiplier field jointly determine the first physical layer bit rate. , not shown in Figure 5a, Figure 5b and Figure 5c. In this case, the value represented by the multiplier field is not 0, that is, X=1, to indicate a certain multiple. In Figure 5a, Figure 5b and Figure 5c, the LCID field and the DL indication field can be referred to the introduction of Figure 3a and will not be described again here.

Example 2, the first information includes the following two pieces of information:

The first item is the type information of the first media. For details, please refer to the introduction of Example 1 in S404, and will not be described again here.

The second term, differential rate. The differential rate is an additional physical layer bit rate increased or decreased by the first network device for the terminal device. The differential rate is the differential rate for the first medium running on the terminal device. The differential rate is the difference between the first physical layer bit rate and a predetermined bit rate. For example, still taking Media 1 as an example, the first information may include R _Δ to indicate the differential rate of Media 1 . For the predetermined bit rate, please refer to the introduction of S4033, which will not be described again here.

In Example 2, the format of the first information is introduced:

The type information of the first media occupies 1 bit in the first information, and the differential rate occupies 1 bit in the first information. Taking ANBR signaling as an example, the type information of the first media occupies one reserved bit in ANBR signaling, and the differential rate can occupy 7 bits in ANBR signaling, such as 6 bits in the bit rate field and one reserved bit. , as shown in Figure 6a or Figure 6b. Among them, the value of the bit rate field is used to represent the absolute value of the differential rate, and the value of the reserved bit is used to represent positive/negative (+/-).

It should be noted that in Figures 6a and 6b, the value represented by the multiplier field is 0, that is, X=0, indicating that the multiplier is 1. Alternatively, the differential rate may occupy 8 bits in the first information. Taking ANBR signaling as an example, the differential rate is Let occupies one reserved bit in the reserved field, the bit rate field and the multiplier field. The value represented by the bit rate field and the value represented by the multiplier field jointly determine the absolute value of the differential rate, which is not shown in Figures 6a and 6b. In this case, the value represented by the multiplier field is not 0, that is, X=1, to indicate a certain multiple. In Figures 6a and 6b, the LCID field and the DL indication field can be referred to the introduction of Figure 3a, and will not be described again here. Figure 6a (or Figure 6b) is applicable to the scenario where the number of media running on the terminal device is two.

It should be understood that in the embodiment of the present application, the five diagrams (Figure 5a, Figure 5b, Figure 5c, Figure 6a and Figure 6b) are introduced with reference to ANBR signaling. Of course, the first information can also have other The format design is not limited in the embodiments of this application.

In some embodiments, for the first network device, after performing S404, the first network device may monitor the total amount of physical layer bit rate change between itself and the terminal device. When the first network device monitors The total physical layer bit rate change is the same as or close to R _Δ in S4031 (for example, the difference between the total physical layer bit rate change monitored by the first network device and R _Δ in S4031 is less than the threshold), then the first The network device does not need to execute S404 again. In this case, the first network device updates local information to store the physical layer bit rate between the terminal device and the first network device. In this way, the first network device can execute S4033 at the y+1th time to determine the first physical layer bit rate of the first media.

On the contrary, when the total amount of changes in the physical layer bit rate monitored by the first network device has a large deviation from R _Δ in S4031 (such as the difference between the total amount of changes in the physical layer bit rate monitored by the first network device and R _Δ in S4031 value is greater than or equal to the threshold), then the first network device executes S404 again until the number of repeated executions of S404 reaches the preset value, or the total amount of changes in the physical layer bit rate monitored by the first network device is the same as or close to R _Δ in S4031 .

It should be understood that in the case where S403 includes S4031, S4032 and S4033, the first information may be transmitted through Example 1 in S404. In the case where S403 includes S4031 and S4032, the first information may be transmitted through Example 2 in S404. Alternatively, when the total physical layer bit rate change R _Δ between the first network device and the terminal device is determined based on network congestion conditions, the first information may also be transmitted through Example 2 in S404. Among them, the process of determining the total physical layer bit rate change R _Δ based on network congestion conditions is as follows:

Step 1: The first network device determines the change amount of time-frequency resources allocated to the terminal device.

For example, for the first network device, when the first network device determines that the network congestion state becomes worse, the number of resource blocks (RBs) allocated by the first network device to the terminal device is reduced. On the contrary, when the first network device determines that the network congestion state has become better, the number of RBs allocated by the first network device to the terminal device increases.

Step 2: The first network device determines the total physical layer bit rate change R _Δ between itself and the terminal device based on the time-frequency resource change.

Illustratively, taking the time-frequency resource variation including the variation in the number of RBs as an example, the first network device determines the distance between itself and the terminal device based on the variation in the number of RBs and the modulation and coding scheme (MCS). The total physical layer bit rate change R _Δ .

For the terminal device, after receiving the first information, the terminal device executes S405a and/or S405b. Among them, S405a and S405b are introduced as follows:

S405a. The terminal device sends the first media to the service server at the first transmission rate. Correspondingly, the service server receives the first media from the terminal device at the first transmission rate.

Wherein, the first transmission rate is determined based on the first physical layer bit rate. The first transmission rate refers to the application layer bit rate when the first media is transmitted between the terminal device and the service server. The physical layer bit rate corresponding to the first transmission rate is less than or equal to the first physical layer bit rate.

S405b. The service server sends the first media to the terminal device at the first transmission rate. Correspondingly, the terminal device receives the first media from the service server at the first transmission rate.

For the first transmission rate, please refer to the introduction of S405a, which will not be described again here.

It should be understood that during the uplink transmission process, the terminal device performs S405a. During the downlink transmission process, the terminal device executes S405b.

In some embodiments, as shown in Figure 7a, the terminal device also performs S406:

S406. The terminal device sends the second information to the first network device. Correspondingly, the first network device receives the second information from the terminal device.

The second information indicates the terminal device's expected rate for the first media running on the terminal device. Taking media 1 as the first media as an example, the expected rate of the first media is recorded as The second information includes the expected rate of media 1

Illustratively, taking ANBRQ signaling as an example, the second information may be a part of the fields in the ANBRQ signaling. For details, see the introduction of Figures 7b to 7f. Compared with Figures 5a, 5b, 5c, 6a and 6b, the difference between Figures 7b to 7f is that the value of the bit rate field is used to represent the expected rate of the first medium by the terminal device, or, bit rate The value of the rate field and the value of the multiplier field jointly represent the expected rate of the first medium by the terminal device. Of course, the second information may also be a field in other signaling, which is not limited in the embodiment of the present application.

It should be understood that in this embodiment of the present application, when the second information is Figure 7b, Figure 7c or Figure 7d, the expected rate refers to the physical layer bits of the first medium between the terminal device and the first network device. Total rate. When the second information is shown in Figure 7e or Figure 7f, the expected rate refers to the physical layer bit rate adjustment amount of the first medium between the terminal device and the first network device expected by the terminal device.

For the first network device, after the first network device receives the second information, S403 includes S403a:

S403a. The first network device determines the first physical layer bit rate of the first media running on the terminal device with reference to the expected rate.

Illustratively, taking the case where the expected rate is greater than zero, the first network device can allocate more time-frequency resources to the terminal device. Based on the additional time-frequency resources and MCS allocated this time, the first network device determines itself and the terminal device. The total amount of physical layer bit rate variation R _Δ between devices. The first network device is based on the desired rate and the smaller value of the total physical layer bit rate change R _Δ to determine the first physical layer bit rate. For example, when then the first network device will expect the rate Replace the total physical layer bit rate change R _Δ in formula (5), and determine the first physical layer bit rate based on the replaced formula (5); alternatively, the first network device will expect the rate Replace the total physical layer bit rate variation R _Δ in formula (6), and determine the first physical layer bit rate based on the replaced formula (6). when Then the first network device determines the first physical layer bit rate based on formula (5) or formula (6).

It should be noted that S406 is an optional step. When the terminal device determines the expected rate of the first media based on actual service requirements, the terminal device executes S406. Correspondingly, the first network device determines the first physical layer bit rate in response to the second information. On the contrary, if the terminal device has not determined the expected rate of the first medium, the terminal device does not perform S406. In this case, the first network device may execute S403 periodically, for example, S403 may be executed at a certain interval to adjust the physical layer bit rate of the media in real time.

In some embodiments, as shown in Figure 8, the terminal device also performs S407:

S407. The terminal device determines the codec format according to the first physical layer bit rate.

For example, the terminal device selects one codec format from multiple codec formats it supports based on the physical layer bit rates corresponding to different codec formats. Wherein, the physical layer bit rate corresponding to the codec format determined in S407 is less than or equal to the first physical layer bit rate.

It should be understood that each codec format corresponds to a physical layer bit rate, as shown in Table 2:

Table 2

In Table 2, the physical layer bit rate corresponding to codec format 1 is x1, the physical layer bit rate corresponding to codec format 2 is y1, and the physical layer bit rate corresponding to codec format 3 is z1. Still taking media 1 as an example, the first physical layer bit rate of media 1 is R _1,1 . When x1＜R _1,1 , y1＞R _1,1 , z1＞R _1,1 , the terminal device determines codec format 1 as the selected codec format; when x1＞R _1,1 , y1＜R _{1 ,1} , when z1>R _1,1 , the terminal device determines the codec format 2 as the selected codec format; when x1>R _1,1 , y1>R _1,1 , z1<R _1,1 , the terminal The device determines that codec format 3 is the selected codec format; when x1>R _1,1 , y1<R _1,1 , z1<R _1,1 , y1<z1, the terminal device determines that codec format 3 is the selected codec format. The selected codec format.

For the terminal device, the codec format determined in S407 is recorded as the first codec format. After the terminal device determines the first codec format, during uplink transmission, the terminal device executes S408:

S408. The terminal device uses the first codec format to encode the media data of the first media to obtain encoded media data.

Illustratively, still taking Media 1 as an example, the terminal device uses the first codec format to encode the media data of Media 1 to obtain encoded media data. For the specific encoding process, please refer to related technologies, which will not be described again here. .

For the terminal device, the first media in S404a refers to the media data encoded in the first codec format. That is, after the terminal device executes S408, it then executes S405a to implement uplink transmission.

In some embodiments, as shown in Figure 9, during uplink transmission, S405a includes step a1:

Step a1: The terminal device sends the first media to the service server through the third information at the first transmission rate. Correspondingly, the service server receives the first media from the terminal device through the third information at the first transmission rate.

Wherein, the third information also includes information of the first codec format. It can be understood that the third information includes information of the first media and the first codec format. For example, the third information may include the name or identification of the first codec format.

For example, assuming that the first media is a video signal, the third information may include some fields in a real-time transport control protocol (RTCP) message. The first media occupies the payload field of the RTCP message. Information in a codec format occupies the temporary maximum media bitrate request (TMMBN) field of the RTCP message.

For another example, assuming that the first media is an audio signal, the third information may include some fields in the RTCP message. The first media occupies the payload field in the RTCP message, and the information in the first codec format occupies the CMR field.

For the business server, after receiving the third information, the business server executes S409:

S409. The service server decodes the first media using the first codec format.

Among them, the first codec format in S409 is consistent with the first codec format in step a1. For the decoding process of the first media, please refer to related technologies and will not be described again here.

For the terminal device, after the terminal device determines the codec format, as shown in Figure 8, during downlink transmission, the terminal device executes S410:

S410. The terminal device sends fifth information to the service server. Correspondingly, the service server receives the fifth information from the terminal device.

The fifth information includes information used to determine the first codec format. In the downlink transmission in this embodiment of the present application, the first codec format is the codec format used by the service server when encoding the first media.

For example, when the codec format determined in S407 is the first codec format, the fifth information indicates the first codec format. For example, the fifth information includes the name, identification, etc. of the first codec format. If the codec format determined in S407 is the second codec format, the fifth information indicates the second codec format. For example, the fifth information includes the name, identification, etc. of the second codec format.

It should be understood that in this embodiment of the present application, the fifth information is transmitted through the first transmission channel between the terminal device and the service server, and the transmission channel corresponds to the media one-to-one. The first transmission channel is used to transmit the first media. For the terminal device, based on the media type of the first media, the terminal device determines that the port of the first transmission channel on the terminal device side is the first port, and then sends the fifth information through the first port, so that the fifth information passes through the first port. The transmission channel transmits from the terminal device to the business server. For the business server, the business server receives the fifth information from the second port. Since the second port is the port of the first transmission channel on the business server side, the business server determines that the media corresponding to the fifth information is the first based on the second port. The media, that is, the codec format indicated by the fifth information is used for encoding the first media.

For the business server, after receiving the fifth information, the business server executes S411:

S411. The service server determines the first codec format according to the fifth information.

Illustratively, by combining Example 1 and Example 2, the implementation process of S411 is introduced:

Example 1: The service server uses the codec format indicated by the fifth information as the codec format of the first media. For example, in the case where the fifth information indicates the first codec format, the service server uses the first codec format as the codec format of the first media.

Example 2: The service server determines the codec format of the first media according to the codec format indicated by the fifth information. For example, when the fifth information indicates the second codec format, the service server uses the first codec format as the codec format of the first media based on certain reference factors. Wherein, the physical layer bit rate corresponding to the second codec format is greater than or equal to the physical layer bit rate corresponding to the first codec format.

S412. The service server uses the first codec format to encode the media data of the first media to obtain encoded media data.

Among them, the implementation process of S412 can be found in the introduction of S408, and will not be described again here.

For the service server, the first media in S405b refers to the media data encoded in the first codec format. That is, after the service server executes S412, it then executes S405b to implement downlink transmission.

In some embodiments, as shown in Figure 9, during downlink transmission, S405b includes step b1:

Step b1: The service server sends the first media to the service server through the fourth information at the first transmission rate. Correspondingly, the terminal device receives the first media from the service server through the fourth information at the first transmission rate.

The fourth information can be introduced as the third information in S405a, which will not be described again here.

For the terminal device, after receiving the fourth information, the terminal device executes S413:

S413. The terminal device decodes the first media using the first codec format.

Among them, the first codec format in S413 is consistent with the first codec format in step b1. For the decoding process of the first media, please refer to related technologies and will not be described again here.

Above, the service rate adjustment method 400 is introduced by taking a single medium, that is, the first medium, as an example.

Below, taking multiple media, that is, the first media and the second media, as an example, the service rate adjustment method 1000 is introduced in conjunction with Figures 10 to 13b:

S1001. The terminal device, the first network device and the service server execute the QoS flow establishment process.

Among them, the implementation process of S1001 can be found in the introduction of S401 and will not be described again here.

After the QoS flow is established, media transmission is performed between the terminal device and the service server, that is, S1002a and/or S1002b is executed. Among them, the introduction of S1002a and S1002b is as follows:

S1002a. The terminal device sends at least two media to the service server. Correspondingly, the service server receives at least two media from the terminal device.

For the implementation process of S1002a, please refer to the introduction of S402a and will not be described again here.

S1002b. The service server sends at least two media to the terminal device. Correspondingly, the terminal device receives at least two media from the service server.

Among them, the implementation process of S1002b can be found in the introduction of S402b, and will not be described again here.

In the media transmission process (such as the above S1002a and/or S1002b is executed), the first network device executes S1003:

S1003. The first network device determines the first physical layer bit rate of the first media running on the terminal device, and the second physical layer bit rate of the second media running on the terminal device.

The first media and the second media are different media among the M media running on the terminal device. For example, assuming that the number of media running on the terminal device is still M, the first media is Media 1, and the second media may be Media 2, Media 3, or Media M. Alternatively, the first media is Media 2 and the second media may be Media 3, Media 4, or Media M.

The first physical layer bit rate refers to the physical layer bit rate when the first media is transmitted between the terminal device and the first network device. The second physical layer bit rate refers to the physical layer bit rate when the second media is transmitted between the terminal device and the first network device.

For example, as shown in Figure 11, S1003 includes the following steps:

S10031. The first network device determines the total physical layer bit rate change between itself and the terminal device.

Among them, the implementation process of S1003 can be found in the introduction of S4031, and will not be described again here.

S10032. The first network device determines the first physical layer bit rate of the first media and the second physical layer bit rate of the second media based on the total physical layer bit rate change between itself and the terminal device and at least one rate combination. rate.

For the rate combination in S10032, please refer to the introduction of candidate rates in S401, which will not be described again here.

As an example, the implementation process of S10032 is introduced based on Table 1:

After the QoS flow is established, when the first network device adjusts the media rate for the first time, for the first network device, based on the QoS profile (see the introduction of step 3 in S401 for details), the first network device can determine the initial rate sum R ₀ , which is the sum of the initial rates of the media running on the terminal device. Illustratively, taking Table 1 as an example, the initial rate sum R ₀ satisfies the following formula:
R ₀ =a1+b1 Formula (7)

Among them, R ₀ represents the sum of the initial rates of media running on the terminal device after the QoS flow is established, a1 represents the initial rate of media 1 running on the terminal device after the QoS flow is established, and b1 represents the initial rate of media 1 running on the terminal device after the QoS flow is established. The initial rate of media 2 running on the end device.

When the sum of the candidate bit rates of all media in a certain rate combination satisfies formula (8), the first network device determines that the media in the group of rate combinations includes the first media and the second media. Among them, the introduction of formula (8) is as follows:
R ₀ <A+B<R ₀ +R _ΔFormula (8)

Among them, R ₀ represents the sum of the initial rates of media running on the terminal device after the QoS flow is established, A represents a candidate rate of media 2 running on the terminal device after the QoS flow is established, and B represents after the QoS flow is established. , a candidate rate of media 2 running on the terminal device, R _Δ represents the physical layer between itself and the terminal device determined by the first network device The total amount of bit rate change. Taking Table 1 as an example, when the rate combination is rate combination 2 in Table 1, A=a2, B=b1; when the rate combination is rate combination 3 in Table 1, A=a1, B=b2; when the rate combination is When the rate combination is 4 in Table 1, A=a2 and B=b2.

Combined with Table 1, after determining a set of rate combinations that satisfy formula (8), the first network device can also determine the first physical layer bit rate of the first media and the second physical layer bit rate of the second media.

It should be understood that formula (8) is introduced by taking two media running on the terminal device as an example. Of course, when more media are run on the terminal device, the first network device determines the sum of the candidate rates of the media running on the terminal device. When at least two rate combinations satisfy formula (8), the first network device selects a rate combination from the combinations that satisfy formula (8), for example, selects the rate combination with the largest sum of candidate rates, and then determines the first media rate combination. a physical layer bit rate, and a second physical layer bit rate of the second medium.

After the QoS flow is established, when the first network device adjusts the media rate for the zth time, for the first network device, the first network device records the total physical layer bit rate R _x when the media rate is adjusted for the z-1th time. , that is, the sum of the physical layer bit rates of the media running on the terminal device after the z-1th media rate adjustment. Among them, z represents a positive integer, z≥2.

When the sum of the candidate bit rates of all media in a certain rate combination satisfies formula (9), the first network device determines that the media in the group of rate combinations includes the first media and the second media. Among them, the introduction of formula (9) is as follows:
R _z <A+B<R _z +R _ΔFormula (9)

Among them, R _z represents the sum of the physical layer bit rates of the media running on the terminal device after the z-1th media rate adjustment after the QoS flow is established, and A represents the media running on the terminal device 1 after the QoS flow is established. A candidate rate of , B represents a candidate rate of media 2 running on the terminal device after the QoS flow is established, and R _Δ represents the total physical layer bit rate change between the first network device and the terminal device determined by the first network device.

In this way, for the first network device, the first network device can determine a rate combination that satisfies formula (9), thereby determining the first physical layer bit rate of the first media and the second physical layer bit rate of the second media. , which will not be described again here.

For the first network device, after the first network device determines the first physical layer bit rate and the second physical layer bit rate, the first network device performs S1004:

S1004. The first network device sends the first information to the terminal device. Correspondingly, the terminal device receives the first information from the first network device.

The first information indicates the first physical layer bit rate and the second physical layer bit rate. Please refer to the introduction of S1003 for the first physical layer bit rate and the second physical layer bit rate, which will not be described again here.

Next, the first information is introduced through the first possible implementation method and the second possible implementation method:

As a first possible implementation manner, the first information includes first indication information. The first indication information indicates the first physical layer bit rate of the first medium and the second physical layer bit rate of the second medium. For example, the value represented by the first indication information corresponds to a rate set. The rate combination includes a candidate rate for each of M media running on the terminal device, M is a positive integer greater than or equal to 2, and the M media includes the first media and the second media.

It should be understood that the rate combination corresponding to the value represented by the first indication information is the rate combination determined in S1003. Taking Table 1 as an example, the value of M is 2. If the rate combination determined in S1003 is rate combination 2 in Table 1, then the value represented by N bits corresponds to rate combination 2.

The first indication information occupies N bits in the first information, and the values represented by the N bits correspond to a rate set. For example, if the rate combination determined in S1003 is rate combination 2 in Table 1, then the values of M and N are both 2. Taking ANBR signaling as an example, the first indication information occupies N bits in the ANBR signaling, as shown in Figure 12.

It should be noted that the value of N is related to the number of rate combinations. For example, N satisfies the following formula:
2 ^N-1 <S≤2 ^N formula (10)

Wherein, N represents the number of bits occupied by the first indication information in the first information, and S represents the number of rate combinations initially configured by the first network device. For details, see the introduction of step 3 in S401. Taking Table 1 as an example, the value of S is 4 and the value of N is 2.

As the second possible implementation method, the first information includes the following two pieces of information:

The first item, the first instruction information. The first indication information indicates the physical layer bit rate of the first medium and the physical layer bit rate of the second medium. The first indication information can still use a rate combination to indicate the physical layer bit rate of the first medium and the physical layer bit rate of the second medium. Please refer to the introduction of the first possible implementation method in the first information, here No longer.

The second term is the first adjustment factor. Wherein, the first adjustment factor includes a first rate adjustment factor of the first medium and a second rate adjustment factor of the second medium. For example, if the rate combination determined in S1003 is rate combination 2 in Table 1, then the value of the bit where the first rate adjustment factor is located is 0, which means that the value of the first rate adjustment factor is 1 . The value of the bit where the second rate adjustment factor is located is 0, which means that the value of the second rate adjustment factor is 1.

It should be noted that, in the case where the first information includes the first indication information and the first adjustment factor, the physical layer bit rate and the first rate adjustment factor of the first medium are used to determine the first physical layer bit rate, and the second media The physical layer bit rate and the second rate adjustment factor are used to determine the second physical layer bit rate.

The first indication information occupies N bits in the first information, and the values represented by the N bits correspond to a rate set. The first adjustment factor occupies L bits in the first information, and L is a positive integer less than or equal to M. For example, if the rate combination determined in S1003 is rate combination 2 in Table 1, then the values of M, N and L are all 2. Taking ANBR signaling as an example, the first indication information occupies N bits in the ANBR signaling, and the first adjustment factor occupies L bits in the ANBR signaling, as shown in Figure 12.

It should be understood that Figure 12 is applicable to a scenario where the number of media running on the terminal device is at least two. In Figure 12, the LCID field and the DL indication field can be referred to the introduction in Figure 3a and will not be described again here. Figure 12 is an exemplary introduction with reference to ANBR signaling. Of course, the first information can also be designed in other formats, which is not limited in the embodiment of the present application.

For the terminal device, after receiving the first information, the terminal device executes S1005a and/or S1005b. Among them, the introduction of S1005a and S1005b is as follows:

S1005a. The terminal device sends the first media to the service server at the first transmission rate, and sends the second media to the service server at the second transmission rate. Correspondingly, the service server receives the first media from the terminal device at the first transmission rate, and receives the second media from the terminal device at the second transmission rate.

Wherein, the second transmission rate is determined based on the second physical layer bit rate. The second transmission rate refers to the application layer bit rate when the second media is transmitted between the terminal device and the service server. The physical layer bit rate corresponding to the second transmission rate is less than or equal to the second physical layer bit rate.

S1005b. The service server sends the first media to the terminal device at the first transmission rate, and sends the second media to the terminal device at the second transmission rate. Correspondingly, the terminal device receives the first media from the service server at the first transmission rate, and receives the second media from the service server at the second transmission rate.

For the first transmission rate and the second transmission rate, please refer to the introduction of S1005a, which will not be described again here.

It should be understood that during the uplink transmission process, the terminal device performs S1005a. During the downlink transmission process, the terminal device executes S1005b.

In some embodiments, as shown in Figure 13a, the terminal device also performs S1006:

S1006. The terminal device sends the second information to the first network device. Correspondingly, the first network device receives the second information from the terminal device.

The second information indicates the terminal device's expected rate for the first media running on the terminal device, and the terminal device's expected rate for the second media running on the terminal device.

Next, the second information is introduced through the first possible implementation method and the second possible implementation method:

As a first possible implementation manner, the second information includes second indication information. The second indication information indicates the terminal device's expected rate for the first media running on the terminal device, and the terminal device's expected rate for the second media running on the terminal device. For example, the value represented by the second indication information corresponds to a rate set. The second indication information indicates the expected rate of the first medium and the expected rate of the second medium by indicating a rate combination. The second indication information occupies N bits in the second information. For details, please refer to the introduction of the first indication information, which will not be described again here.

As the second possible implementation method, the second information includes the following two pieces of information:

The first item, the second instruction information. The second indication information indicates the physical layer bit rate of the first medium and the physical layer bit rate of the second medium. The second indication information can still use a rate combination to indicate the physical layer bit rate of the first medium and the physical layer bit rate of the second medium. Please refer to the introduction of the first possible implementation method in the second information, here No longer.

The second term is the first adjustment factor. Wherein, the second adjustment factor includes an expected rate adjustment factor of the first medium and an expected rate adjustment factor of the second medium.

It should be noted that, in the case where the second information includes the second indication information and the second adjustment factor, the physical layer bit rate of the first medium and the expected rate adjustment factor of the first medium are used to determine the expected rate of the first medium, The physical layer bit rate of the second medium and the desired rate adjustment factor of the second medium are used to determine the desired rate of the second medium.

The second indication information occupies N bits in the second information, and the values represented by the N bits correspond to a rate set. The second adjustment factor occupies L bits in the second information, and L is a positive integer less than or equal to M. For example, if the desired rate combination determined by the terminal device is rate combination 2 in Table 1, then the values of M, N, and L are all 2. Taking ANBR signaling as an example, the second indication information occupies N bits in the ANBR signaling, and the second adjustment factor occupies L bits in the ANBR signaling, as shown in Figure 13b.

It should be understood that Figure 13b is applicable to a scenario where the number of media running on the terminal device is at least two. In Figure 13b, the LCID field and the UL indication field can be found in the introduction of Figure 3b and will not be described again here. Figure 13b is an exemplary introduction with reference to ANBRQ signaling. Of course, the second information may also have other format designs, which is not limited in the embodiment of the present application.

For the first network device, after the first network device receives the second information, the first network device refers to the expected rate of the first media, determines the first physical layer bit rate of the first media running on the terminal device, and refers to the first physical layer bit rate of the first media. The expected rate of the second media determines the second physical layer bit rate of the second media running on the terminal device.

Illustratively, taking the case where the expected rate is greater than zero, the first network device can allocate more time-frequency resources to the terminal device. Based on the additional time-frequency resources and MCS allocated this time, the first network device determines itself and the terminal device. The total amount of physical layer bit rate variation R _Δ between devices. The first network device is based on the desired rate and the smaller value of the total physical layer bit rate variation R _Δ to obtain the first physical layer bit rate and the second physical layer bit rate. For example, when then the first network device will expect the rate Replace the total physical layer bit rate change R _Δ in formula (8), and determine the first a physical layer bit rate and a second physical layer bit rate; alternatively, the first network device will expect the rate Replace the total physical layer bit rate variation R _Δ in formula (9), and determine the first physical layer bit rate and the second physical layer bit rate based on the replaced formula (9). when Then the first network device determines the first physical layer bit rate and the second physical layer bit rate based on formula (8) or formula (9).

It should be understood that in the service rate adjustment method 1000 in this embodiment of the present application, the terminal device determines the codec format of the first media and the codec format of the second media. Please refer to the introduction in S407. The codec format of the first media and the codec format of the second media may be the same or different, and this is not limited in the embodiments of the present application.

In uplink transmission or downlink transmission, for the encoding, transmission and decoding process of each media (such as the first media or the second media), please refer to the introduction in the service rate adjustment method 400 in the embodiment of this application, which will not be repeated here. Repeat.

In addition, in downlink transmission, the terminal device can provide the media codec format to the service server. See the introduction of S410.

Embodiment 2

Embodiment 2 mainly introduces the second service rate adjustment method. In the second service rate adjustment method, the terminal device determines the medium whose transmission rate is to be adjusted. The medium whose transmission rate needs to be adjusted may be one type or multiple types. Next, with reference to Figures 14 to 15b, the second service rate adjustment method proposed in the embodiment of the present application will be introduced in detail.

In the service rate adjustment method provided by the embodiment of the present application, the terminal device receives the first information from the first network device. Wherein, the first information indicates the change amount of the physical layer bit rate between the first network device and the terminal device. The terminal device sends the first media to the service server at a first transmission rate, and/or the terminal device receives the first media from the service server at a first transmission rate. Wherein, the first transmission rate is determined based on the physical layer bit rate variation. In this way, even if at least two media are running on the terminal device at the same time, the media whose transmission rate needs to be adjusted can be determined to be the first media based on the first information, and then the first media can be adjusted on the terminal device based on the first physical layer bit rate. The transmission rate between the server and the business server. For example, when the wireless channel state deteriorates and/or the network congestion condition deteriorates, the transmission rate of the first media between the terminal device and the service server is reduced, that is, the application layer bit rate of the first media is reduced to ensure that the media Transmission reliability. On the contrary, when the wireless channel state becomes better and/or the network congestion condition becomes better, the transmission rate of the first media between the terminal device and the service server increases, that is, the application layer bit rate of the first media increases, so as to Increase media transfer rates.

As shown in Figure 14, the service rate adjustment method 1400 proposed by the embodiment of this application includes the following steps:

S1401. The terminal device, the first network device and the service server execute the QoS flow establishment process.

Among them, the implementation process of S1401 can be found in the introduction of S401 and will not be described again here.

After the QoS flow is established, media transmission is performed between the terminal device and the service server, that is, S1402a and/or S1402b is executed. Among them, S1402a and S1402b are introduced as follows:

S1402a. The terminal device sends at least two media to the service server. Correspondingly, the service server receives at least two media from the terminal device.

For the implementation process of S1402a, please refer to the introduction of S402a and will not be described again here.

S1402b. The service server sends at least two media to the terminal device. Correspondingly, the terminal device receives at least two media from the service server.

For the implementation process of S1402b, please refer to the introduction of S402b and will not be described again here.

In the media transmission process (such as S1402a and/or S1402b performed above), for the first network device, the first The network device executes S1403:

S1403. The first network device determines the total physical layer bit rate change between itself and the terminal device.

Among them, the implementation process of S1403 can be found in the introduction of S4031 and will not be described again here.

S1404. The first network device sends the first information to the terminal device. Correspondingly, the terminal device receives the first information from the first network device.

Wherein, the first information indicates the total amount of changes in the physical layer bit rate. For the total amount of changes in the physical layer bit rate, please refer to the introduction to the differential rate in Example 2 in S404, which will not be described again here.

For example, the format of the first information is as follows: the total physical layer bit rate change may occupy 7 bits in the first information. Taking ANBR signaling as an example, the total physical layer bit rate change occupies one reserved bit in ANBR signaling, such as 6 bits in the bit rate field and one bit in the reserved field, as shown in Figure 15a or Figure 15b. Among them, the value of the bit rate field is used to represent the absolute value of the total physical layer bit rate change, and the value of a reserved bit is used to indicate positive/negative.

It should be noted that in Figures 15a and 15b, the value represented by the multiplier field is 0, that is, X=0, indicating that the multiplier is 1. Alternatively, the total physical layer bit rate change may occupy 8 bits in the first information. For details, please refer to the introduction of differential rate, which will not be described again here. In Figures 15a and 15b, the LCID field and the DL indication field can be referred to the introduction of Figure 3a, and will not be described again here. Figure 15a and Figure 15b are applicable to the scenario where the number of media running on the terminal device is two.

For the terminal device, after receiving the first information, the terminal device executes S1405 or S1407. Among them, S1405 and S1407 are introduced as follows:

S1405. The terminal device determines the first physical layer bit rate of the first media based on the total change in the physical layer bit rate.

For example, for the implementation process of S1405, please refer to the introduction of S4032 and S4033 in S403, which will not be described again here.

For the terminal device, after the terminal device executes S1405, it executes S1406a and/or S1406b. Among them, S1406a and S1406b are introduced as follows:

S1406a. The terminal device sends the first media to the service server at the first transmission rate. Correspondingly, the service server receives the first media from the terminal device at the first transmission rate.

For example, for the implementation process of S1406a, please refer to the introduction of S405a, which will not be described again here.

S1406b. The service server sends the first media to the terminal device at the first transmission rate. Correspondingly, the terminal device receives the first media from the service server at the first transmission rate.

For example, for the implementation process of S1406b, please refer to the introduction of S405b, which will not be described again here.

S1407. The terminal device determines the first physical layer bit rate of the first media and the first physical layer bit rate of the second media based on the total change in the physical layer bit rate.

For example, for the implementation process of S1407, please refer to the introduction of S10032 and S10033 in S1003, which will not be described again here.

For the terminal device, after the terminal device executes S1407, it executes S1408a and/or S1408b. Among them, S1408a and S1408b are introduced as follows:

S1408a. The terminal device sends the first media to the service server at the first transmission rate, and sends the second media to the service server at the second transmission rate. Correspondingly, the service server receives the first media from the terminal device at the first transmission rate, and receives the second media from the terminal device at the second transmission rate.

For the exemplary implementation process of S1408a, please refer to the introduction of S1005a, which will not be described again here.

S1408b. The service server sends the first media to the terminal device at the first transmission rate, and sends the second media to the terminal device at the second transmission rate. Correspondingly, the terminal device receives the first media from the service server at the first transmission rate, and receives the second media from the service server at the second transmission rate.

For example, for the implementation process of S1408b, please refer to the introduction of S1005b, which will not be described again here.

It should be understood that in the service rate adjustment method 1400 in this embodiment of the present application, the terminal device determines the codec format of the first media and the codec format of the second media. Please refer to the introduction in S407. The codec format of the first media and the codec format of the second media may be the same or different, and this is not limited in the embodiments of the present application.

In uplink transmission or downlink transmission, for the encoding, transmission and decoding process of each media (such as the first media or the second media), please refer to the introduction in the service rate adjustment method 400 in the embodiment of this application, which will not be repeated here. Repeat. In addition, in downlink transmission, the terminal device can provide the media codec format to the service server. See the introduction of S410.

The above mainly introduces the solution provided by the embodiment of the present application from the perspective of interaction between various network elements. Correspondingly, embodiments of the present application also provide a communication device. The communication device may be the network element in the above method embodiment, or a device including the above network element, or a component that can be used for the network element. It can be understood that, in order to implement the above functions, the communication device includes corresponding hardware structures and/or software modules for performing each function. Persons skilled in the art should easily realize that, with the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving the hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.

For example, FIG. 16 shows a schematic structural diagram of a communication device 1600. The communication device 1600 includes a processing unit 1601, a sending unit 1602 and a receiving unit 1603.

In one possible example, taking the communication device 1600 as a terminal device, the processing unit 1601 is configured to support the terminal device to perform other processing operations that the terminal device needs to perform in Figure 4a. The sending unit 1602 is used to support the terminal device to perform S402a, S405a in Figure 4a, and/or other sending operations that the terminal device needs to perform in the embodiment of the present application. The receiving unit 1603 is used to support the terminal device to perform S402b, S404, S405b in Figure 4a, and/or other receiving operations that the terminal device needs to perform in the embodiment of the present application.

In another possible example, taking the communication device 1600 as a first network device, the processing unit 1601 is configured to support the first network device to perform S403 in Figure 4a, and/or the first network device needs to Other processing operations performed. The sending unit 1602 is configured to support the first network device to perform S404 in Figure 4a and/or other sending operations that the first network device needs to perform in the embodiment of the present application. The receiving unit 1603 is used to support other receiving operations that the first network device needs to perform.

In another possible example, taking the communication device 1600 as a business server, the processing unit 1601 is configured to support the business server to perform other processing operations that the business server needs to perform in Figure 4a. The sending unit 1602 is used to support the business server to perform S402b, S405b in Figure 4a, and/or other sending operations that the business server needs to perform in the embodiment of this application. The receiving unit 1603 is used to support the service server to perform S402a, S405a in Figure 4a, and/or other receiving operations that the service server needs to perform in the embodiment of this application.

In another possible example, taking the communication device 1600 as a terminal device, the processing unit 1601 is used to support the terminal device to perform other processing operations that the terminal device needs to perform in FIG. 10 . The sending unit 1602 is used to support the terminal device to perform S1002a, S1005a in Figure 10, and/or other sending operations that the terminal device needs to perform in the embodiment of the present application. The receiving unit 1603 is used to support the terminal device to perform S1002b, S1004, S1005b in Figure 10, and/or other receiving operations that the terminal device needs to perform in the embodiment of the present application.

In another possible example, taking the communication device 1600 as the first network device, the processing unit 1601 is configured to support The first network device performs S1003 in Figure 10, and/or other processing operations that the first network device needs to perform in the embodiment of the present application. The sending unit 1602 is used to support the first network device to perform S1004 in Figure 10 and/or other sending operations that the first network device needs to perform in the embodiment of the present application. The receiving unit 1603 is used to support other receiving operations that the first network device needs to perform.

In another possible example, taking the communication device 1600 as a business server, the processing unit 1601 is configured to support the business server in performing other processing operations that the business server needs to perform in FIG. 10 . The sending unit 1602 is used to support the business server to perform S1002b, S1005b in Figure 10, and/or other sending operations that the business server needs to perform in the embodiment of this application. The receiving unit 1603 is used to support the service server to perform S1002a, S1005a in Figure 10, and/or other receiving operations that the service server needs to perform in the embodiment of this application.

In another possible example, taking the communication device 1600 as a terminal device, the processing unit 1601 is configured to support the terminal device to perform S1405, S1407 in Figure 14, and/or other processing operations that the terminal device needs to perform according to the embodiment of the present application. . The sending unit 1602 is used to support the terminal device to perform S1402a, S1406a, S1408a in Figure 14, and/or other sending operations that the terminal device needs to perform in the embodiment of the present application. The receiving unit 1603 is used to support the terminal device to perform S1402b, S1404, S1406b, S1408b in Figure 14, and/or other receiving operations that the terminal device needs to perform in the embodiment of the present application.

In another possible example, taking the communication device 1600 as the first network device, the processing unit 1601 is configured to support the first network device to perform S1403 in Figure 14, and/or the first network device needs to Other processing operations performed. The sending unit 1602 is used to support the first network device to perform S1404 in Figure 14 and/or other sending operations that the first network device needs to perform in the embodiment of the present application. The receiving unit 1603 is used to support other receiving operations that the first network device needs to perform.

In another possible example, taking the communication device 1600 as a business server, the processing unit 1601 is configured to support the business server in performing other processing operations that the business server needs to perform in Figure 14 . The sending unit 1602 is used to support the business server to perform S1402b, S1406b, S1408b in Figure 14, and/or other sending operations that the business server needs to perform in the embodiment of this application. The receiving unit 1603 is used to support the business server to perform S1402a, S1406a, S1408a in Figure 14, and/or other receiving operations that the business server needs to perform in the embodiment of this application.

Optionally, the communication device 1600 may also include a storage unit 1604 for storing program codes and data of the communication device. The data may include but is not limited to original data or intermediate data.

The processing unit 1601 may be a processor or a controller, such as a CPU, a general-purpose processor, an application specific integrated circuit (ASIC), a field programmable gate array (field programmable gate array, FPGA), or other Programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute the various illustrative logical blocks, modules, and circuits described in connection with this disclosure. The processor can also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of DSP and microprocessors, and so on.

The sending unit 1602 may be a communication interface, a transmitter or a sending circuit, etc., where the communication interface is a general term, and in a specific implementation, the communication interface may include multiple interfaces.

The receiving unit 1603 may be a communication interface, a receiver or a receiving circuit, etc., where the communication interface is a general term, and in a specific implementation, the communication interface may include multiple interfaces.

The sending unit 1602 and the receiving unit 1603 may be physically or logically implemented as the same unit.

Storage unit 1604 may be a memory.

When the processing unit 1601 is a processor, the sending unit 1602 and the receiving unit 1603 are communication interfaces, and the storage unit 1604 When it is a memory, the communication device involved in the embodiment of the present application may be as shown in FIG. 17 .

Referring to FIG. 17 , the communication device 1700 includes: a processor 1701 , a communication interface 1702 , and a memory 1703 . Optionally, the communication device may also include a bus 1704. Among them, the communication interface 1702, the processor 1701 and the memory 1703 can be connected to each other through the bus 1704; the bus 1704 can be a peripheral component interconnect standard (peripheral component interconnect, PCI) bus or an extended industry standard architecture (EISA) bus etc. The bus 1704 can be divided into an address bus, a data bus, a control bus, etc. For ease of presentation, only one thick line is used in Figure 17, but it does not mean that there is only one bus or one type of bus.

Optionally, embodiments of the present application also provide a computer program product carrying computer instructions. When the computer instructions are run on a computer, they cause the computer to execute the method described in the above embodiments.

Optionally, embodiments of the present application also provide a computer-readable storage medium that stores computer instructions. When the computer instructions are run on a computer, they cause the computer to execute the method described in the above embodiments.

Optionally, the embodiment of the present application also provides a chip, including: a processing circuit and a transceiver circuit. The processing circuit and the transceiver circuit are used to implement the method introduced in the above embodiment. The processing circuit is used to perform the processing actions in the corresponding method, and the transceiver circuit is used to perform the receiving/transmitting actions in the corresponding method.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, tapes), optical media (e.g., digital video discs (DVD)), or semiconductor media (e.g., solid state drives (SSD)) wait.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple modules or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, indirect coupling or communication connection of devices or modules, and may be in electrical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple devices. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

Through the above description of the implementation, those skilled in the art can clearly understand that the present application can be implemented by means of software plus necessary general hardware. Of course, it can also be implemented by hardware, but in many cases the former is a better implementation. . Based on this understanding, the essence or the contribution part of the technical solution of the present application can be embodied in the form of a software product. The computer software product is stored in a readable storage medium, such as a computer floppy disk, a hard disk or an optical disk. etc., including a number of instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in various embodiments of the present application.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Changes or substitutions within the technical scope disclosed in the present application shall be covered by the protection scope of the present application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A service rate adjustment method, characterized by including:

The first network device determines the first physical layer bit rate of the first media running on the terminal device, wherein the terminal device is wirelessly connected to the first network device;

The first network device sends first information to the terminal device, wherein the first information indicates a first physical layer bit rate of the first media running on the terminal device, and the first physical layer The bit rate is used to determine the transmission rate of the first media running on the terminal device between the terminal device and the service server.
The method of claim 1, further comprising:

The first network device determines a second physical layer bit rate of the second media running on the terminal device;

Wherein, the first information also indicates a second physical layer bit rate of the second media running on the terminal device, and the second physical layer bit rate is used to determine the third media running on the terminal device. 2. The transmission rate of media between the terminal device and the service server.
The method according to claim 2, characterized in that the first information occupies N bits, and the values represented by the N bits correspond to a rate set, and the rate combination includes M types of rates running on the terminal device. A candidate rate for each type of media, M is a positive integer greater than or equal to 2, and the M types of media include the first media and the second media.
The method according to claim 1, characterized in that:

The first information includes type information of the first media.
The method according to claim 4, characterized in that:

The first information includes the first physical layer bit rate; or,

The first information includes a differential rate of the first media running on the terminal device, where the differential rate is a difference between the first physical layer bit rate and a predetermined bit rate.
The method according to any one of claims 1-5, characterized in that, before the first network device sends the first information to the terminal device, the method further includes:

The first network device receives second information from the terminal device, wherein the second information at least indicates the terminal device's expected rate for the first media running on the terminal device, and the third The expected rate of a medium is used by the first network device to determine the first physical layer bit rate.
The method according to claim 6, characterized in that, before the first network device receives the second information from the terminal device, the method further includes:

The first network device receives configuration information from the second network device;

Wherein, the configuration information includes at least one of the following: type information of M media running on the terminal device, information of at least two rate combinations, each of the at least two rate combinations includes the M A candidate rate for each type of media, M is a positive integer greater than or equal to 2, and the M types of media include the first media.
A service rate adjustment method, characterized by including:

The terminal device receives first information from a first network device, wherein the first information indicates a first physical layer bit rate of the first media running on the terminal device, and the terminal device communicates with the first Wireless connection of network equipment;

The terminal device sends the first media to the service server at a first transmission rate, and/or the terminal device receives the first media from the service server at the first transmission rate; wherein, The first transmission rate is based on Determined based on the first physical layer bit rate.
The method of claim 8, further comprising:

The terminal device sends the second media to the service server at a second transmission rate, and/or the terminal device receives the second media from the service server at the second transmission rate; wherein, The second transmission rate is determined based on a second physical layer bit rate, and the first information also indicates the second physical layer bit rate of the second media running on the terminal device.
The method according to claim 9, characterized in that the first information occupies N bits, and the values represented by the N bits correspond to a rate set, and the rate combination includes M types of data running on the terminal device. A candidate rate for each type of media, M is a positive integer greater than or equal to 2, and the M types of media include the first media and the second media.
The method according to claim 8, characterized in that:

The first information includes type information of the first media.
The method according to claim 11, characterized in that:

The first information includes the first physical layer bit rate; or,

The first information includes a differential rate of the first media running on the terminal device, where the differential rate is a difference between the first physical layer bit rate and a predetermined bit rate.
The method according to any one of claims 8-12, characterized in that, before the terminal device receives the first information from the first network device, the method further includes:

The terminal device sends second information to the first network device, wherein the second information at least indicates the terminal device's expected rate for the first media running on the terminal device, and the first The desired rate of the media is used by the first network device to determine the first physical layer bit rate.
The method according to any one of claims 8-13, characterized in that,

The terminal device sends the first media to the service server through third information at the first transmission rate, wherein the third information also includes information in a first codec format, and the first codec The format is at least used for decoding of the first media at the service server; and/or,

The terminal device receives the first media from the service server through fourth information at the first transmission rate, wherein the fourth information also includes information in the first codec format, and the third A codec format is used at least for decoding of the first media on the terminal device.
The method according to claim 14, characterized in that, before the terminal device receives the first media from the service server through fourth information at the first transmission rate, the method further includes:

The terminal device sends fifth information to the service server, where the fifth information includes information for the service server to determine the first codec format, and the fifth information is based on the The first physical layer bit rate is determined.
The method according to claim 15, characterized in that:

The fifth information indicates the first codec format.
The method according to claim 15, characterized in that:

The fifth information indicates a second codec format, wherein the physical layer bit rate corresponding to the second codec format is greater than or equal to the physical layer bit rate corresponding to the first codec format.
The method according to any one of claims 15-17, characterized in that the fifth information includes real-time A field in the transmission protocol RTP message, the field is used to indicate the codec format of a media, and the media includes the first media.
A communication device, characterized in that it includes: a processor and a memory, the processor is coupled to the memory, the memory stores program instructions, and when the program instructions stored in the memory are executed by the processor, The communication device is caused to perform the method as described in any one of claims 1-7, or as described in any one of claims 8-18.
A chip, characterized in that it includes a processor and an input-output interface. The input-output interface is used to receive signals from other devices other than the chip and transmit them to the processor or to transfer signals from the processor. The signal is sent to other devices outside the chip, and the processor is used to implement any one of claims 1-7, or as described in any one of claims 8-18 through logic circuits or execution of code instructions. Methods.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program. When the computer program is run on a communication device, the communication device causes the communication device to execute any of claims 1-7. The method described in any one of claims 8-18.