CN116782307A

CN116782307A - Service rate adjusting method and communication device

Info

Publication number: CN116782307A
Application number: CN202210429762.8A
Authority: CN
Inventors: 胡少领; 李强; 窦凤辉
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-03-11
Filing date: 2022-04-22
Publication date: 2023-09-19

Abstract

The application provides a service rate adjusting method and a communication device, relates to the technical field of wireless communication, and can adjust transmission rates of different media between terminal equipment and a service server. The method comprises the following steps: the first network device determines a first physical layer bit rate of a first medium running on the terminal device. The terminal device is connected with the first network device in a wireless mode. The first network device sends first information to the terminal device. Wherein the first information indicates a first physical layer bit rate of a first medium running on the terminal device, the first physical layer bit rate being used to determine a transmission rate of the first medium running on the terminal device between the terminal device and the service server.

Description

Service rate adjusting method and communication device

The application claims priority of China patent application filed by 11/03/2022 with the application number of 202210238251.8 and the application name of 'an XR service source end speed self-adaptive adjustment method, network equipment and terminal equipment', which are all incorporated by reference.

Technical Field

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

Background

An extended reality (XR) service includes at least two media. XR traffic can be transmitted via adaptive media streaming (dynamic adaptive streaming over HTTP, DASH) technology of hypertext transfer protocol (hyper text transfer protocol, HTTP), e.g. a service server segments the traffic data of the XR traffic into different segments based on the media type of the XR traffic. Wherein segments of different media are transmitted between the terminal device and the service server using different application layer bit rates (bitrates).

However, how to adjust the transmission rate of different media in XR service between the terminal device and the service server when the wireless channel status and/or the network congestion status change is a problem to be solved.

Disclosure of Invention

The application provides a service rate adjusting method and a communication device, which can adjust the transmission rate of different media between terminal equipment and a service server. In order to achieve the above purpose, the application adopts the following technical scheme:

in a first aspect, a traffic rate adjustment method is provided. The execution subject of the method may be the first network device or a chip applied in the first network device. The following describes an example in which the execution subject is the first network device. The method comprises the following steps: the first network device determines a first physical layer bit rate of a first medium running on the terminal device. The terminal device is connected with the first network device in a wireless mode. The first network device sends first information to the terminal device. Wherein the first information indicates a first physical layer bit rate of a first medium running on the terminal device, the first physical layer bit rate being used to determine a transmission rate of the first medium running on the terminal device between the terminal device and the service server.

Since the first information indicates the first media in addition to the first physical layer bit rate, even if at least two media are simultaneously operated on the terminal device, it is possible to determine that the media to be adjusted in transmission rate is the first media based on the first information, and further adjust the transmission rate of the first media between the terminal device and the service server based on the first physical layer bit rate.

In one possible design, the method further comprises: the first network device determines a second physical layer bit rate of the second media running on the terminal device. Wherein the first information further indicates a second physical layer bit rate of a second medium running on the terminal device, the second physical layer bit rate being used to determine a transmission rate of the second medium running on the terminal device between the terminal device and the service server.

That is, the first information indicates a second physical layer bit rate in addition to the first 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 one possible design, the first information occupies N bits, where the N bits represent values corresponding to a set of rates, the combination of rates including a candidate rate for each of M media running on the terminal device, M being a positive integer greater than or equal to 2, the M media including the first media and the second media. For example, in the rate combination corresponding to the 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, the first information indicates a first physical layer bit rate of the first medium and a second physical layer bit rate of the second medium by indicating a rate combination.

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

In one possible design, the first indication information occupies N bits in the first information, where the N bits represent values corresponding to a rate set, the rate set 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 include the first media and the second media.

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

In one possible design, the first information includes type information of the first medium so that the terminal device knows which medium the transmission rate to adjust is.

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

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

In one possible design, 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 indicates at least a desired rate of the terminal device for the first medium, the desired rate of the first medium being used by the first network device to determine a first physical layer bit rate to meet a requirement of the terminal device.

In one possible design, the method further comprises, before the first network device receives the second information from the terminal device: the first network device receives configuration information from the second network device. Wherein the configuration information includes at least one of: the method comprises the steps of enabling M media running on a terminal device to be in type information and information of at least two rate combinations, wherein each rate combination in the at least two rate combinations comprises a candidate rate of each media in the M media, M is a positive integer greater than or equal to 2, and the M media comprise a first media so as to carry out parameter configuration for the first network device.

In a second aspect, a traffic rate adjustment method is provided. The execution subject of the method can be a terminal device or a chip applied to the terminal device. The following describes an example in which the execution subject is a terminal device. The method comprises the following steps: the terminal device receives first information from the first network device. Wherein the first information indicates a first physical layer bit rate of a first medium running on the terminal device, the terminal device being wirelessly connected to the first network 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 the first transmission rate. Wherein the first transmission rate is determined based on the first physical layer bit rate.

In one possible design, the method further comprises: 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 a second physical layer bit rate, the first information further indicating a second physical layer bit rate of a second medium running on the terminal device.

In one possible design, the first information occupies N bits, where the N bits represent values corresponding to a set of rates, the combination of rates including a candidate rate for each of M media running on the terminal device, M being a positive integer greater than or equal to 2, the M media including the first media and the second media.

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

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

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

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

In one possible design, before the terminal device receives the first information from the first network device, the method further comprises: the terminal device sends the second information to the first network device. Wherein the second information indicates at least a desired rate of the terminal device for the first medium, the desired rate of the first medium being used by the first network device to determine the first physical layer bit rate.

In one possible design, the terminal device sends the first media to the service server via the third information at the first transmission rate. The third information further includes information in a first codec format, where the first codec format is at least used for decoding the first media at the service server. And/or the terminal equipment receives the first media from the service server through the fourth information at the first transmission rate. The fourth information further includes information in a first codec format, where the first codec format is at least used for decoding the first media at the terminal device.

In one 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 comprises: the terminal device sends fifth information to the service server. Wherein 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 encodes using the first codec format at the time of downlink transmission.

In one possible design, the fifth information indicates the first codec format. That is, the service server may encode using a codec format (i.e., a first codec format) reported by the terminal device.

In one 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, the service server may autonomously select one codec format, i.e. the first codec format, for encoding based on the codec format (i.e. the second codec format) reported by the terminal device.

In one possible design, the fifth information includes a field in a real-time transport protocol RTP message indicating a codec format for a medium including the first medium.

In a third aspect, a traffic rate adjustment method is provided. The execution subject of the method can be a service server or a chip applied to the service server. The following describes an example in which the execution subject is a service server. The method comprises the following steps: the service server receives fifth information from the terminal device. Wherein the fifth information includes information for determining the first codec format. The service server transmits the first media to the terminal device at a first transmission rate. Wherein the first medium is a medium running on the terminal device and the first transmission rate is determined based on the first codec format.

That is, after determining the first codec format based on the fifth information, the service server can determine the first transmission rate, thereby adjusting the downlink transmission rate of the first medium between the terminal device and the service server.

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

In one possible design, the fifth information is carried in a field in a RTP message that indicates a codec format for a medium including the first medium.

In one possible design, the service server transmits the first media to the terminal device via the fourth information at the first transmission rate. The fourth information further includes information in a first codec format, where the first codec format is at least used for decoding the first media at the terminal device.

In a fourth aspect, a traffic rate adjustment method is provided. The execution subject of the method can be a service server or a chip applied to the service server. The following describes an example in which the execution subject is a service server. The method comprises the following steps: the service server receives the first media from the terminal device through the third information at the first transmission rate. Wherein the third information further comprises information of the first codec format. The service server decodes the first media using the first codec format.

In a fifth aspect, a traffic rate adjustment method is provided. The execution subject of the method can be a terminal device or a chip applied to the terminal device. The following describes an example in which the execution subject is a terminal device. The method comprises the following steps: the terminal device receives first information from the first network device. Wherein the first information indicates an amount of physical layer bit rate change 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 said first media from the service server at the first transmission rate. Wherein the first transmission rate is determined based on the physical layer bit rate variation.

Even if at least two media are simultaneously operated on the terminal equipment, the media with the transmission rate to be adjusted can be determined to be the first media based on the first information, and the transmission rate of the first media between the terminal equipment and the service server can be adjusted based on the first physical layer bit rate.

In one possible design, the method further comprises: 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, the terminal device can determine the second physical layer bit rate in addition to the first physical layer bit rate based on the physical layer bit rate variation, so that the terminal device adjusts the transmission rate of the second medium based on the second physical layer bit rate.

In one 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 comprises: the terminal device sends fifth information to the service server. Wherein the fifth information includes information for the service server to determine the first codec format, the fifth information being determined by the terminal device based on the physical layer bit rate variation.

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

A sixth aspect provides a communication device, which may be the first network apparatus in the first aspect or any one of the possible designs of the first aspect, or a chip implementing the function of the first network apparatus; the communication device comprises corresponding modules, units or means (means) for realizing the method, and the modules, units or means can be realized by hardware, software or realized by executing corresponding software by hardware. The hardware or software includes one or more modules or units corresponding to the functions described above.

The communication device includes a processing unit, a transmitting unit, and a receiving unit. Wherein the processing unit is configured to determine a first physical layer bit rate of a first medium running on the terminal device. Wherein the terminal device is wirelessly connected with the communication device. And the sending unit is used for sending the first information to the terminal equipment. Wherein the first information indicates a first physical layer bit rate of a first medium running on the terminal device, the first physical layer bit rate being used to determine a transmission rate of the first medium running on the terminal device between the terminal device and the service server.

In one possible design, the processing unit is further configured to determine a second physical layer bit rate of the second medium running on the terminal device. Wherein the first information further indicates a second physical layer bit rate of a second medium running on the terminal device, the second physical layer bit rate being used to determine a transmission rate of the second medium running on the terminal device between the terminal device and the service server.

In one possible design, the receiving unit is further configured to receive the second information from the terminal device before the transmitting unit transmits the first information to the terminal device. Wherein the second information indicates at least a desired rate of the terminal device for the first medium, the desired rate of the first medium being used by the communication device to determine the first physical layer bit rate to meet the requirements of the terminal device.

In one 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. Wherein the configuration information includes at least one of: the method comprises the steps of enabling M media running on a terminal device to be in type information and information of at least two rate combinations, wherein each rate combination in the at least two rate combinations comprises a candidate rate of each media in the M media, M is a positive integer greater than or equal to 2, and the M media comprise a first media.

A seventh aspect provides a communication device, which may be a terminal device in the second aspect or any one of the possible designs of the second aspect, or a chip implementing the functions of the terminal device; the communication device comprises corresponding modules, units or means (means) for realizing the method, and the modules, units or means can be realized by hardware, software or realized by executing corresponding software by hardware. The hardware or software includes one or more modules or units corresponding to the functions described above.

The communication device includes a processing unit, a transmitting unit, and a receiving unit. The receiving unit is configured to receive first information from a first network device. Wherein the first information indicates a first physical layer bit rate of a first medium running on the communication device, the communication device being wirelessly connected with the first network device. A transmitting unit for transmitting the first media to the service server at a first transmission rate, and/or a receiving unit for receiving 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. And the processing unit is used for controlling the receiving unit to execute the processing or controlling the receiving unit and the sending unit to execute the processing.

In one possible design, the sending unit is further configured to send the second media to the service server at the second transmission rate, and/or the receiving unit is further configured to receive 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, the first information further indicating a second physical layer bit rate of a second medium running on the communication device.

In one possible design, the first information occupies N bits, the N bits representing values corresponding to a set of rates, the combination of rates comprising a candidate rate for each of M media running on the communication device, M being a positive integer greater than or equal to 2, the M media comprising the first media and the second media.

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

In one possible design, the sending unit is further configured to send the second information to the first network device before the receiving unit receives the first information from the first network device. Wherein the second information indicates at least a desired rate of the communication device for the first medium, the desired rate of the first medium being used by the first network device to determine the first physical layer bit rate.

In one possible design, the sending unit is configured to send the first media to the service server through the third information at the first transmission rate. The third information further includes information in a first codec format, where the first codec format is at least used for decoding the first media at 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. The fourth information further includes information in a first codec format for at least decoding of the first media at the communication device.

In one possible design, the sending unit is further configured to send the fifth information to the service server before the receiving unit receives the first media from the service server via the fourth information at the first transmission rate. Wherein the fifth information includes information for the service server to determine the first codec format, the fifth information being determined by the communication device based on the first physical layer bit rate to enable the service server to encode using the first codec format at the time of downstream transmission.

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

An eighth aspect provides a communication device, which may be a service server in any one of the above-mentioned third aspect or the possible designs of the third aspect, or a chip implementing the function of the service server; the communication device comprises corresponding modules, units or means (means) for realizing the method, and the modules, units or means can be realized by hardware, software or realized by executing corresponding software by hardware. The hardware or software includes one or more modules or units corresponding to the functions described above.

The communication device includes a processing unit, a transmitting unit, and a receiving unit. Wherein, the receiving unit is used for receiving the fifth information from the terminal equipment. Wherein the fifth information includes information for determining the first codec format. And the sending unit is used for sending the first media to the terminal equipment at a first transmission rate. Wherein the first medium is a medium running on the terminal device and the first transmission rate is determined based on the first codec format. The control unit is configured to control the receiving unit to perform the above-described processing, and to control the transmitting unit to perform the above-described processing.

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

In one possible design, the transmitting unit is configured to transmit the first medium to the terminal device via the fourth information at the first transmission rate. The fourth information further includes information in a first codec format, where the first codec format is at least used for decoding the first media at the terminal device.

A ninth aspect provides a communication device, which may be a service server in any one of the possible designs of the fourth aspect or the fourth aspect, or a chip implementing the function of the service server; the communication device comprises corresponding modules, units or means (means) for realizing the method, and the modules, units or means can be realized by hardware, software or realized by executing corresponding software by hardware. The hardware or software includes one or more modules or units corresponding to the functions described above.

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 further comprises information of the first codec format. And the processing unit is used for decoding the first media by adopting the first coding and decoding format.

A tenth aspect provides a communication device, which may be a terminal device in any one of the above fifth aspect or the possible designs of the fifth aspect, or a chip implementing the functions of the above terminal device; the communication device comprises corresponding modules, units or means (means) for realizing the method, and the modules, units or means can be realized by hardware, software or realized by executing corresponding software by hardware. The hardware or software includes one or more modules or units corresponding to the functions described above.

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

In one possible design, the sending unit is further configured to send the second media to the service server at the second transmission rate, and/or the receiving unit is further configured to receive 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.

In one possible design, the sending unit is further configured to send the fifth information to the service server before the receiving unit receives the first media from the service server via the fourth information at the first transmission rate. Wherein the fifth information includes information for the service server to determine the first codec format, the fifth information being determined by the communication device based on the physical layer bit rate variation.

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

In an eleventh aspect, a communication apparatus is provided. The communication device includes: a processor and a memory; the memory is configured to store computer instructions that, when executed by the processor, cause the communication apparatus to perform the method performed by the first network device in any one of the above aspects or any one of the possible designs of any one of the above aspects. The communication means may be the first network device of the first aspect or any of the possible designs of the first aspect, or a chip implementing the functionality of the first network device.

In a twelfth aspect, a communication device is provided. The communication device includes: a processor; the processor is coupled to the memory for reading the instructions in the memory and executing to cause the communication device to perform the method performed by the first network device as in any one of the above aspects or any one of the possible designs of any one of the aspects. The communication means may be the first network device of the first aspect or any of the possible designs of the first aspect, or a chip implementing the functionality of the first network device.

In a thirteenth aspect, a chip is provided. The chip includes a processing circuit and an input-output interface. Wherein the input-output interface is for communication with a module outside the chip, which may be, for example, a chip implementing the functionality of the first network device in the first aspect or any of the possible designs of the first aspect. The processing circuitry is arranged to run a computer program or instructions to implement the method of the first aspect above or any of the possible designs 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 for storing computer instructions which, when executed by the processor, cause the communications apparatus to perform the method performed by the terminal device in any one of the above aspects or any one of the possible designs of any one of the aspects. The communication means may be a terminal device in the second aspect or any one of the possible designs of the second aspect, or the communication means may be a terminal device in the fifth aspect or any one of the possible designs of the fifth aspect, or a chip implementing the functions of the terminal device.

In a fifteenth aspect, a communication device is provided. The communication device includes: a processor; the processor is coupled to the memory for reading the instructions in the memory and executing the instructions to cause the communication device to perform the method performed by the terminal device as in any one of the above aspects or any one of the possible designs of the aspect. The communication device may be the terminal device in the second aspect or any of the possible designs of the second aspect, or the terminal device in the fifth aspect or any of the possible designs of the fifth aspect, or a chip implementing the functions of the terminal device.

In a sixteenth aspect, a chip is provided. The chip includes a processing circuit and an input-output interface. Wherein the input-output interface is for communication with a module outside the chip, which may be, for example, a chip implementing the functionality of the terminal device in the second aspect or any of the possible designs of the second aspect. The processing circuitry is configured to run a computer program or instructions to implement the method of the second aspect above or any of the possible designs of the second aspect. As another example, the chip may be a chip implementing the functions of the terminal device in any of the above fifth aspect or any of the possible designs of the fifth aspect. The processing circuitry is configured to run a computer program or instructions to implement the method of the fifth aspect or any one of the possible designs of the fifth aspect above.

In a seventeenth aspect, a communication device is provided. The communication device includes: a processor and a memory; the memory is for storing computer instructions that, when executed by the processor, cause the communications device to perform the method performed by the service server in any one of the above aspects or any one of the possible designs of any one of the aspects. The communication device may be a service server in any one of the possible designs of the third aspect or the third aspect, or the communication device may be a service server in any one of the possible designs of the fourth aspect or the fourth aspect, or a chip implementing the functions of the service server.

In an eighteenth aspect, a communication device is provided. The communication device includes: a processor; the processor is coupled to the memory for reading the instructions in the memory and executing to cause the communication device to perform the method performed by the service server in any one of the above aspects or any one of the possible designs of the above aspect. The communication device may be a service server in any of the possible designs of the third aspect or the third aspect, or a chip implementing the functions of the service server.

In a nineteenth aspect, a chip is provided. The chip includes a processing circuit and an input-output interface. Wherein the input-output interface is for communication with a module outside the chip, which may be, for example, a chip implementing the service server function in any of the above-mentioned third aspect or any of the possible designs of the third aspect. The processing circuitry is arranged to run a computer program or instructions to implement the method of any one of the above third aspects or any one of the possible designs of the third aspect. As another example, the chip may be a chip implementing the service server function in any of the possible designs of the fourth aspect or the fourth aspect. The processing circuitry is arranged to run a computer program or instructions to implement the method in any of the above fourth or any of the possible designs of the fourth aspect.

In a twentieth aspect, a computer-readable storage medium is provided. The computer readable storage medium having instructions stored therein which, when run on a computer, cause the computer to perform the method of any of the above aspects.

In a twenty-first aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any of the above aspects.

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

The technical effects of any one of the designs of the sixth aspect to the twentieth aspect may refer to the advantages of the corresponding methods provided above, and will not be repeated here.

Drawings

FIG. 1a is a schematic diagram of a communication system according to an embodiment of the present application;

FIG. 1b is a schematic diagram of a communication system according to an embodiment of the present application;

fig. 2 is a flow chart of a service rate adjustment method according to an embodiment of the present application;

fig. 3a is a schematic diagram of a signaling format according to an embodiment of the present application;

Fig. 3b is a schematic diagram of yet another signaling format according to an embodiment of the present application;

fig. 4a is a flow chart of another service rate adjustment method according to an embodiment of the present application;

fig. 4b is a flowchart of another service rate adjustment method according to an embodiment of the present application;

fig. 4c is a flowchart illustrating another service rate adjustment method according to an embodiment of the present application;

fig. 5a is a schematic diagram of yet another signaling format provided in an embodiment of the present application;

fig. 5b is a schematic diagram of another signaling format according to an embodiment of the present application;

fig. 5c is a schematic diagram of another signaling format according to an embodiment of the present application;

fig. 6a is a schematic diagram of yet another signaling format provided in an embodiment of the present application;

fig. 6b is a schematic diagram of another signaling format according to an embodiment of the present application;

fig. 7a is a flowchart of another service rate adjustment method according to an embodiment of the present application;

fig. 7b is a schematic diagram of another signaling format according to an embodiment of the present application;

fig. 7c is a schematic diagram of another signaling format according to an embodiment of the present application;

fig. 7d is a schematic diagram of another signaling format according to an embodiment of the present application;

fig. 7e is a schematic diagram of another signaling format according to an embodiment of the present application;

Fig. 7f is a schematic diagram of another signaling format according to an embodiment of the present application;

fig. 8 is a flow chart of another service rate adjustment method according to an embodiment of the present application;

fig. 9 is a flowchart of another service rate adjustment method according to an embodiment of the present application;

fig. 10 is a flowchart of another service rate adjustment method according to an embodiment of the present application;

fig. 11 is a flowchart of another service rate adjustment method according to an embodiment of the present application;

fig. 12 is a schematic diagram of yet another signaling format provided in an embodiment of the present application;

fig. 13a is a flowchart of another service rate adjustment method according to an embodiment of the present application;

fig. 13b is a schematic diagram of yet another signaling format provided in an embodiment of the present application;

fig. 14 is a flowchart of another service rate adjustment method according to an embodiment of the present application;

fig. 15a is a schematic diagram of yet another signaling format provided in an embodiment of the present application;

fig. 15b is a schematic diagram of yet another signaling format provided in an embodiment of the present application;

fig. 16 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 17 is a schematic structural diagram of still another communication device according to an embodiment of the present application.

Detailed Description

The terms "first" and "second" and the like in the description and in the drawings are used for distinguishing between different objects or between different processes of the same object and not for describing a particular order of objects. Furthermore, references to the terms "comprising" and "having" and any variations thereof in the description of the present application are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed but may optionally include other steps or elements not listed or inherent to such process, method, article, or apparatus. It should be noted that, in the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion. In the embodiment of the present application, "two or more" includes two itself. The plurality may include two, three, or more.

The technical scheme of the embodiment of the application can be applied to various communication systems, such as a fifth generation (5th generation,5G) system, a New Radio (NR) system, a long term evolution (long term evolution, LTE) system and the like. The technical scheme provided by the application can also be applied to future communication systems, such as a sixth generation mobile communication system. The technical solution of the embodiment of the present application may also be applied to a device-to-device (D2D) communication, a vehicle-to-device (V2X) communication, a machine-to-machine (machine to machine, M2M) communication, a machine type communication (machine type communication, MTC), and an internet of things (internet of things, ioT) communication system or other communication systems.

To facilitate understanding of the embodiments of the present application, a communication system to which the embodiments of the present application are applicable will be briefly described with reference to fig. 1a and 1 b.

As an exemplary illustration, fig. 1a shows a schematic architecture of a 5G system to which an embodiment of the present application is applicable. As shown in fig. 1a, the network architecture 1000 includes a terminal device (terminal equipment) 110, AN Access Network (AN) device 120, a user plane function (user plane function, UPF) network element 130, and AN edge application server (edge application server, EAS) 140.

The terminal device 110 may also be referred to as a user equipment (ue), a terminal device, an access terminal, a subscriber unit, a subscriber station, a Mobile Station (MS), a Mobile Terminal (MT), a remote station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, a user device, or the like. The terminal device 110 may be a device that provides voice/data connectivity to a user, e.g., a handheld device with wireless connectivity, an in-vehicle device, etc. Currently, some examples of terminal devices may include: a mobile phone (mobile phone), a tablet (pad), a computer with wireless transceiver function (e.g., a notebook, a palm, etc.), a mobile internet device (mobile internet device, MID), a Virtual Reality (VR) device, an augmented reality (augmented reality, AR) device, a wireless terminal in an industrial control (industrial control), a wireless terminal in an unmanned (self-drive), a wireless terminal in a telemedicine (remote medical), a wireless terminal in a smart grid (smart grid), a wireless terminal in a transportation security (transportation safety), a wireless terminal in a smart city (smart city), a wireless terminal in a smart home (smart home), a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a wireless terminal in a wearable device, a land-based device, a future-mobile terminal in a smart city (smart city), a public network (35G) or a future mobile communication device, etc.

Furthermore, the terminal device 110 may also be a terminal device in an internet of things (internet of things, ioT) system. IoT is an important component of future information technology development, and its main technical feature is to connect an item with a network through a communication technology, so as to implement man-machine interconnection and an intelligent network for object interconnection. IoT technology may enable massive connectivity, deep coverage, and terminal device power saving through, for example, narrowband (NB) technology.

In addition, terminal device 110 may also include an intelligent printer, a train detector, etc., and the main functions include collecting data, receiving control information and downstream data from access network device 120, and transmitting electromagnetic waves to access network device 120 for transmitting upstream data.

It should be appreciated that terminal device 110 may be any device that may access a network. Terminal device 110 and access network device 120 may communicate with each other using some air interface technology.

Alternatively, the terminal device 110 may be used to act as an access network device. For example, the terminal device may act as a scheduling entity that provides side-uplink signals between terminal devices in V2X or D2D, etc. For example, a cellular telephone and a car communicate with each other using side-link signals. Communication between the cellular telephone and the smart home device is not required through communication between access network devices.

Among other things, access network device 120, which may also be referred to as a radio access network (radio access network, RAN) device. The access network device 120 is configured to provide a network access function for the authorized terminal device 110 in a specific area, and can use transmission tunnels with different service qualities according to the level of the terminal device 110, the service requirement, and the like. The access network device 120 can manage radio resources, provide access services for the terminal device 110, and further complete forwarding of control information and user data between the terminal device and the core network, and the access network device 120 can also be understood as a base station (base station) in a conventional network.

The access network device 120 in the embodiment of the present application may be any communication device having a wireless transceiving function for communicating with the terminal device 110. The access network device includes, but is not limited to, an evolved NodeB (eNB), or a next generation NodeB (gNB) in an NR system, or a transmission receiving point (transmission reception point, TRP), one or a group of base stations (including multiple antenna panels) in a 5G system, or a network node constituting the gNB or TRP, such as a baseband unit (BBU), or a Distributed Unit (DU), etc.

In some deployments, the gNB may include a Centralized Unit (CU) and DUs. The gNB may also include an active antenna unit (active antenna unit, AAU). The CU implements part of the functionality of the gNB and the DU implements part of the functionality of the gNB. For example, the CU is responsible for handling non-real time protocols and services, implementing the functions of the radio resource control (radio resource control, RRC), packet data convergence layer protocol (packet data convergence protocol, PDCP) layer. The DUs are responsible for handling physical layer protocols and real-time services, implementing the functions of the radio link control (radio link control, RLC), medium access control (media access control, MAC) and Physical (PHY) layers. The AAU realizes part of physical layer processing function, radio frequency processing and related functions of the active antenna. Under this architecture, higher layer signaling, such as RRC layer signaling, may also be considered as being sent by DUs, since the information of the RRC layer eventually becomes or is converted from the information of the PHY layer. It is to be appreciated that access network device 120 may be a device that includes one or more of CU, DU, AAU. In addition, the CU may be divided into access network devices in the access network, or may be divided into access network devices in a Core Network (CN), which is not limited by the present application.

The UPF network element 130 mainly includes the following functions: data packet routing and transmission, packet detection, traffic reporting, quality of service (quality of service, qoS) handling, lawful interception, uplink packet detection, downlink data packet storage, and other user plane related functions.

Wherein EAS140 is an application server deployed in an edge data network (edge data network, EDN). The application running on the server may also be referred to as an "application instance", and specifically refers to an instance (instance) of a server application program, such as augmented reality (augmented reality, AR), virtual Reality (VR), or the like, deployed to run on an edge data network. An application (or service as well) may deploy one or more EAS in the EDN, deploying EAS running in different EDNs may be considered as different EAS of an application, they may share a domain name, or may use different domain names with applications deployed on the cloud, where the domain name may be a fully qualified domain name (fully qualified domain name, FQDN), may use an anycast internet protocol (internet protocol, IP) address, or may use different IP addresses.

It is to be appreciated that EAS may also be referred to as edge applications, application instances, edge application instances, multiple access edge computing (MEC) applications, EAS functions, and the like.

The EDN may be a local part of DN (local data center), and the EDN includes an edge enabled server (edge enabler server, EES) and a plurality of EAS, each EDN having a specific service area.

Optionally, as shown in fig. 1b, the network architecture may further include, but is not limited to, the following network elements: an access and mobility management function (access and mobility management function, AMF) network element, a session management function (session management function, SMF) network element, a network opening function (network exposure function, NEF) network element, an edge computing incorporating an edge application server discovery function (edge application server discovery function, EASDF) network element, a network storage function (network repository function, NRF) network element, a policy control function (policy control function, PCF) network element, a unified data management (unified data management, UDM) network element, an application function (application function, AF) network element, and the like.

The AMF network element mainly comprises the following functions: access and mobility related functions such as connection management, mobility management, registration management, access authentication and authorization, reachability management, security context management, etc.

The SMF network element is mainly used for session management, IP address allocation and management of terminal equipment, terminal node for selecting manageable user plane function, strategy control and charging function interface, downlink data notification and the like.

Wherein, NEF network element mainly includes following function: secure open third generation partnership project (3rd generation partnership project,3GPP) network functions provide services and capabilities; information interacting with the AF network element and information interacting with internal network functions, such as service identification of the AF network element and internal 5G core network information such as data network names (data network name, DNN), single network slice selection auxiliary information (single network slice selection assistance information, S-NSSAI), etc., are converted or translated.

The EASDF network element is mainly responsible for discovering the EAS network element, processing domain name system (domain name system, DNS) messages, terminating DNS security, and the like according to the indication of the SMF network element.

Wherein, NRF network element mainly includes following functions: service discovery function, maintaining NF text of available Network Function (NF) instances and services they support.

The PCF network element is used for guiding a unified policy framework of network behavior, and provides policy rule information for control plane function network elements, such as AMF network elements, SMF network elements, and the like.

The AF network element is used for providing application layer information for data routing of application, and can interact with the strategy framework or directly interact with the strategy framework through the NEF network element to perform strategy decision request control and the like.

Wherein, the UDM network element mainly comprises the following functions: unified data management, authentication credentials handling in 3GPP authentication and key agreement mechanisms, user identity handling, access authorization, registration and mobility management, subscription management, short message management, etc.

In the embodiment of the 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 core network equipment. The core network device and the access network device may be referred to as network devices.

In the network architecture shown in fig. 1b, the network elements may communicate through interfaces shown in the figure, and part of the interfaces may be implemented by adopting a non-service interface. As shown in fig. 1b, the terminal device and the AMF network element may interact through an N1 interface, and the interaction Message may be called, for example, an N1 Message (N1 Message). The interaction between the access network device and the AMF network element may be performed through an N2 interface, where the N2 interface may be used for sending non-access stratum (NAS) messages, etc. The interaction between the access network device and the UPF network element can be performed through an N3 interface, and the N3 interface can be used for transmitting data of a user plane and the like. The SMF network element and the UPF network element may interact through an N4 interface, where the N4 interface may be used to transmit information such as tunnel identification information of the N3 connection, data buffer indication information, and downlink data notification messages. The UPF network element and the EAS can interact through an N6 interface, and the N6 interface can transmit data of a user plane and the like.

In addition, each network element of the control plane function in fig. 1b may also communicate through a service interface, for example, the AMF network element accesses the service architecture through the Namf interface to provide a corresponding service; the SMF network element accesses the service architecture through the Nsmf interface to provide corresponding service; similarly, the NEF network element, the EASDF network element, the NRF network element, the PCF network element, the UDM network element and the AF network element access the service architecture through respective corresponding interfaces to provide corresponding services, which are not described herein. The relationship between the other interfaces and the network elements is shown in fig. 1b and is not described in detail here for the sake of brevity.

It should be understood that the network architecture to which the above embodiments of the present application can be applied is only an exemplary illustration, and the network architecture to which the embodiments of the present application are applicable is not limited to this, and any network architecture including the functions capable of implementing the respective network elements described above is applicable to the embodiments of the present application.

It should also be understood that the AMF network element, SMF network element, UPF network element, PCF network element, etc. shown in fig. 1b may be understood as network elements for implementing different functions, e.g. may be combined into network slices as required. The network elements may be independent devices, may be integrated in the same device to implement different functions, or may be network elements in hardware devices, or may be software functions running on dedicated hardware, or may be virtualized functions instantiated on a platform (for example, a cloud platform), where the specific form of the network elements is not limited by the present application.

It should also be understood that the above designations are merely intended to facilitate distinguishing between different functions and should not be construed as limiting the application in any way. The application does not exclude the possibility of using other designations in 5G networks as well as in other networks in the future. For example, in a 6G network, some or all of the individual network elements may follow the terminology in 5G, possibly by other names, etc.

It should also be understood that the names of interfaces between the network elements in fig. 1a and 1b are only an example, and the names of interfaces in the specific implementation may be other names, which are not limited in detail by the present application. Furthermore, the names of the transmitted messages (or signaling) between the various network elements described above are also merely an example, and do not constitute any limitation on the function of the message itself.

In order to facilitate understanding of the embodiments of the present application, the following description will simply explain related art to which the present application relates.

1、XR

XR refers to a real and virtual combined, man-machine interactive environment created by computer technology and wearable devices. XR is proposed on the basis of augmented reality (augmented reality, AR), virtual Reality (VR) and Mixed Reality (MR). In other words, XR is actually a generic term, including AR, VR and MR, in order to avoid confusion of concepts. The XR service aims to achieve the interactive immersion experience effect by utilizing a high-speed network, adding 360-degree imaging and other technologies.

Among other things, XR services require the simultaneous transmission of multiple media, such as different audio and video. The XR service is transmitted by DASH technology, for example, the service server divides the service data of the XR service into different segments based on the media type of the XR service. Wherein segments of different media 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, media flow (media flow), and in the embodiment of the present application, the description is given by taking the media as an example.

2. Coding and decoding format

The encoding and decoding format belongs to the data compression/decompression technology. For the same coding and decoding format, the method can be used for coding media to be transmitted by the transmitting device and decoding received media by the receiving device. The codec format may also have other descriptions, such as codec type (codec type), and in the embodiment of the present application, the codec format is described as an example. The following describes a codec format using an audio signal and a video signal as an example:

for audio signals, the codec format includes at least one of: adaptive multi-rate narrowband coding (AMR-NB), or adaptive multi-rate wideband coding (AMR-WB).

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

first, high efficiency video coding (high efficiency video coding, HEVC) 26x, such as h.263, h.264, or h.265.

Second, moving picture experts group (moving picture experts group, MPEG) x coding format, such as MPEG1, MPEG2, or MPEG4.

Wherein the video signals can be distinguished in different ways. For example, a video frame may be divided into a field of view (FoV) and a non-field of view (not shown) depending on the position of the image of the video frame within the line of sight of the terminal device. The visual field area is a visual field area obtained by measuring angles of visual areas on two sides from a visual field focus in a visual field range of the terminal equipment at a given moment. The non-field of view region refers to a region other than the field of view region in the video frame. In XR traffic, the image quality requirements for the field of view and the non-field of view are different. The quality of the pictures in the field of view is required to be high, whereas the pictures in the non-field of view can become blurred and desalted. That is, the resolution requirements of the field of view and the non-field of view are different, and the corresponding codec formats are different.

3. Access network bit rate recommendation (access network bitrate recommendation, ANBR) signaling

ANBR signaling is signaling in the internet protocol multimedia subsystem (internet protocol multimedia subsystem, IMS) for instructing the network device to recommend a physical layer bit rate to the terminal device to adjust the transmission rate of XR traffic between the terminal device and the traffic server. Exemplary, in connection with fig. 2 and 3b, the ANBR signaling is described in detail:

referring to fig. 2, ims is connected to an evolved packet core (evolved packet core, EPC) device 1 and EPC device 2, respectively. The EPC device 1 is also connected to an access network device 1, and the access network device 1 is also communicatively connected to the terminal device 1. The EPC device 2 is also connected to an access network device 2, and the access network device 2 is also communicatively connected to the terminal device 2. Accordingly, the terminal device 1 and the terminal device 2 can communicate with each other via the EPC device through IMS. Wherein the EPC device is a core network device in a 4G network. The steps executed by each device are as follows:

step 1, the terminal device 2 sends a message 1 to the terminal device 1. Correspondingly, the terminal device 1 receives the message 1 from the terminal device 2.

Wherein message 1 is used to Request a maximum physical layer bit rate R0 (e.g., may be denoted as Request max R0).

For terminal device 1, after terminal device 1 receives message 1, step 2 is performed:

Step 2, the terminal device 1 sends a message 2 to the terminal device 2. Correspondingly, the terminal device 2 receives the message 2 from the terminal device 1.

Wherein message 2 is used to inform the maximum physical layer bit rate R0 (e.g., may be denoted as Notify max R0).

Step 3, the terminal device 1 and the terminal device 2 transmit media at the physical layer bit rate R0.

Illustratively, terminal device 1 transmits media to terminal device 2 at physical layer bit rate R0, and, correspondingly, terminal device 2 receives media from terminal device 1 at physical layer bit rate R0. And/or the terminal device 2 transmits media to the terminal device 1 at the physical layer bit rate R0, and the terminal device 1 receives media from the terminal device 2 at the physical layer bit rate R0, accordingly.

The media transmitted in step 3 may be carried in real-time transport protocol (real-time transport protocol, RTP) messages, for example. In the transmission process shown in step 3, if the terminal device 1 transmits media to the terminal device 2 at the physical layer bit rate R0, the transmission process may be denoted as RTP media flow with UE-1R0 send rate.

During the transmission, the access network device 1 determines that the radio channel state is degraded and/or that the network congestion state is degraded, and the access network device 1 determines a recommended physical layer bit rate R1 for the terminal device 1. Wherein R1 is less than R0. Then, the access network device 1 performs step 4:

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

Wherein the ANBR signaling is used to instruct the access network device 1 to recommend a physical layer bit rate R1 to the terminal device 1, so that the terminal device 1 adjusts the physical layer bit rate in the Uplink (UL) transmission process. The signaling transmitted in step 4 may be referred to as UL ANBR R1, for example.

The format of a medium access control element (MAC CE) of ANBR signaling is shown in fig. 3 a. The ANBR signaling includes a logical channel identification (logical channel identifier, LCID) field, a Downlink (DL) indication field, a bit rate field, a multiplier (X) field, and a reserved (R) field. Wherein the LCID field includes 6 bits to indicate a logical channel identification. It should be appreciated that the bit rate indicated by the ANBR signaling is applicable to the media transmitted by the logical channel. The DL indication field includes 1 bit to indicate whether to transmit uplink or downlink. The bit rate field comprises 6 bits to indicate a physical layer bit rate recommended by the access network device 1. The multiplier subfield includes 1 bit. For example, if the value represented by the multiplier subfield is 0, the recommended multiplier is 1, and if the value represented by the multiplier subfield is 1, the recommended multiplier is a specified multiple. The reserved field includes 2 bits, or is described as including 2 reserved bits.

It should be understood that, for each media, after the application layer encodes via the codec format, the application layer sequentially passes through the service data adaptation protocol (service data adaptation protocol, SDAP) layer, PDCP layer, RLC layer, MAC layer and PHY layer, and the encoded media is transmitted to the terminal device 2 via the physical channel, which is described in detail in step 3 and step 6. The LCID in the ANBR signaling is used to identify a certain logical channel. Wherein the medium in step 6 is transferred from the RLC layer to the MAC layer by the logical channel on the side of the terminal device 1.

Alternatively, if in the uplink transmission procedure, for the terminal device 1, the terminal device 1 sends an access network bit rate recommendation query (access network bitrate recommendation query, ANBRQ) signaling to the access network device 1 before the terminal device 1 performs step 4. Correspondingly, the access network device 1 receives ANBRQ signaling from the terminal device 1.

Wherein the ANBRQ signaling comprises the physical layer bit rate that the terminal device 1 expects to recommend.

The format of the MAC CE for ANBRQ signaling is shown in fig. 3 b. The ANBRQ signaling includes an LCID field, an Uplink (UL) indication field, a bit rate field, a multiplier (X) field, and a reserved field. The LCID field, the bit rate field, the multiplier (X) field, and the reserved field may be referred to in the description of ANBR signaling, and are not described herein.

For the access network device 1, the access network device 1 determines a recommended physical layer bit rate based on the physical layer bit rate in the ANBRQ, and the real-time wireless channel state and the network congestion state, and provides the recommended physical layer bit rate to the terminal device 1 through the ANBR, that is, the description of step 4 is not repeated herein.

Alternatively, if in the downlink transmission process, the terminal device 1 does not need to send ANBRQ signaling for the terminal device 1. For the access network device 1, the access network device 1 may perform step 4.

And 5, the terminal equipment 1 makes a decision.

Illustratively, the terminal device 1 uses the physical layer bit rate R1 indicated by the ANBR signaling as the physical layer bit rate of the uplink transmission.

In step 6, the terminal device 1 and the terminal device 2 transmit media at the physical layer bit rate R1.

For example, the implementation process of step 6 may refer to the description of step 3, which is not repeated herein.

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

Step 7, the terminal device 1 sends a message 3 to the terminal device 2. Correspondingly, the terminal device 2 receives the message 3 from the terminal device 1.

Wherein message 3 is used to inform the maximum physical layer bit rate R1 (e.g., may be denoted as Notify max R0).

For example, where the XR service comprises a video signal, message 3 may be carried in a transcoding mode request (codec mode request, CMR) field in a real-time transport control protocol (real-time transport control protocol, RTCP) message.

In the above process flow, the recommended physical layer bit rate in the ANBR signaling is one, which is suitable for a scenario in which a logical channel transmits a single medium. In XR service, the same logical channel supports transmission of different media at the same time, that is, the transmission rate of different media between the terminal device and the service server cannot be finely adjusted based on the physical layer bit rate indicated by the ANBR signaling, so as to affect the transmission performance of the media.

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

Example 1

The first embodiment mainly describes a first traffic rate adjustment method. In a first traffic rate adjustment method, a medium for which a transmission rate is to be adjusted is determined by a first network device. The medium to be used for adjusting the transmission rate may be a kind of medium, which is described in detail in the service rate adjustment method 400; the media to be used for adjusting the transmission rate may also be various, and details of the service rate adjustment method 1000 will be described. Next, a first service rate adjustment method according to an embodiment of the present application is described in detail with reference to fig. 4a to fig. 13 b.

In the service rate adjustment method provided by the embodiment of the application, the first network device determines the first physical layer bit rate of the first media running on the terminal device. The terminal device is connected with the first network device in a wireless mode. The first network device then sends the first information to the terminal device. Wherein the first information indicates a first physical layer bit rate of a first medium running on the terminal device, the first physical layer bit rate being used to determine a transmission rate of the first medium running on the terminal device between the terminal device and the service server. In this way, since the first information indicates the first media in addition to the first physical layer bit rate, even if at least two media are simultaneously operated on the terminal device, it is possible to determine that the media to be adjusted in transmission rate is the first media based on the first information, and further adjust the transmission rate of the first media between the terminal device and the service server based on the first physical layer bit rate. For example, when the wireless channel state is poor and/or the network congestion condition is poor, the transmission rate of the first medium between the terminal device and the service server is reduced, that is, the application layer bit rate of the first medium is reduced, so as to ensure the reliability of the medium transmission. Conversely, when the wireless channel state is better and/or the network congestion condition is better, the transmission rate of the first media between the terminal equipment and the service server is increased, namely the bit rate of the application layer of the first media is increased, so as to increase the media transmission rate.

As shown in fig. 4a, the service rate adjustment method 400 according to the embodiment of the present application includes the following steps:

s401, the terminal equipment, the first network equipment and the service server execute QoS flow establishment process.

As shown in fig. 4b, the QoS flow setup procedure involves the apparatus comprising: terminal equipment, first network equipment, second network equipment, third network equipment, fourth network equipment and service server. Taking the 5G network architecture as an example, the first network device may be the access network device in fig. 1b, such as a gNB. The fourth network device may be the PCF network element in fig. 1b, the third network device may be the SMF network element in fig. 1b, and the second network device may be the AMF network element in fig. 1 b. The service server may be the EAS of fig. 1 b. It should be understood that in the embodiment of the present application, the description of each device is given by taking a 5G network architecture as an example. Along with the evolution of the communication technology, each device may also have other names, and the device names are not limited in the embodiment of the present application.

Illustratively, as shown in FIG. 4b, S401 includes the following steps (step 1-step 4):

and step 1, the service server sends QoS parameters to the fourth network equipment. Accordingly, the fourth network device receives the QoS parameters from the traffic server.

Wherein the QoS parameters include: information of at least two media supported by the terminal equipment and the service server together (shown in table 1), candidate rates corresponding to each of the at least two media (shown in table 1), initial rates corresponding to each of the at least two media (shown in table 1), coding and decoding format information supported by the terminal equipment and the service server together, service quality of media transmission such as time delay, packet loss rate and the like. It should be understood that in the embodiment of the present application, an initial rate corresponding to a medium refers to a physical layer bit rate when the medium is first transmitted between the terminal device and the first network device after the QoS flow is established.

Illustratively, table 1 shows some of the QoS parameters, and the description of table 1 is as follows:

TABLE 1

In table 1, there are two candidate rates for medium 1, and it is understood that there are two physical layer bit rates supported when medium 1 is transmitted between the terminal device and the first network device. Two candidate rates for medium 2 are understood to be two physical layer bit rates supported in transmitting medium 2 between the terminal device and the first network device. In table 1, the number of rate combinations is 4, numbered 1 to 4. For example, in rate combination 1, the candidate rate for media 1 is candidate rate a1, and the candidate rate for media 2 is candidate rate b1. The candidate rates for the various media in the other rate combinations may be found in table 1 and are not described here.

It should be appreciated that table 1 is presented with two types of media (e.g., media 1, media 2 above), each corresponding to two candidate rates. In table 1, for any two rate combinations, there is at least one media candidate rate that is different. Of course, the number of media categories in table 1 may be greater, and there may be one or more candidate rates for each media, which is not limited by the embodiment of the present application. If the number of media categories in table 1 changes and/or the number of candidate rates for one or more of the media in table 1 changes, the number of rate combinations will also be different. Where there is one candidate rate for each medium in table 1, the number of rate combinations is one. The media in table 1 may be a part of the multiple media supported by the terminal device and the service server, or may be all of the multiple media supported by the terminal device and the service server, which is not limited in the embodiment of the present application.

Illustratively, still taking table 1 as an example, table 1 also shows the initial rate of the media, as shown by rate combination 1, i.e. the initial rates that are employed by media 1 and media 2 when transmitted between the terminal device and the first network device.

It should be understood that before step 1 of S401, the following information is negotiated between the terminal device and the service server through session initiation protocol (session initiation protocol, SIP) signaling: media supported by the terminal equipment and the service server together, and encoding and decoding formats supported by the terminal equipment and the service server together.

For the fourth network device, the fourth network device generates a QoS profile (QoS profile) based on the QoS parameters. Wherein the QoS profile includes QoS parameters, the QoS profile may be referred to the relevant protocol specification of 3GPP, and will not be described herein.

And step 2, the fourth network equipment transmits the QoS profile to the third network equipment. Accordingly, the third network device receives the QoS profile from the fourth network device.

For the third network device, the third network device performs step 3 during downlink transmission. In the uplink transmission, the third network device performs step 4. The description of step 3 and step 4 is as follows:

and 3, the third network equipment transmits the QoS profile to the first network equipment through the second network equipment. Accordingly, the first network device receives the QoS profile from the third network device through the second network device.

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

And 4, the third network equipment sends QoS rules (QoS rule) to the terminal equipment through the second network equipment. Correspondingly, the terminal device receives the QoS rule from the third network device through the second network device.

Wherein the QoS rules in step 4 are determined by the third network device based on the QoS profile. The QoS rules may be referred to related protocol specifications of 3GPP, and will not be described herein.

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

After the above steps 1 to 4, qoS flow establishment is completed. The QoS flow establishment procedure may refer to related art, and is not described herein.

After the QoS flow establishment is completed, media transmission is performed between the terminal device and the service server, i.e., S402a and/or S402b are performed. The descriptions of S402a and S402b are as follows:

s402a, the terminal equipment sends at least two media to the service server. Accordingly, the service server receives at least two media from the terminal device.

Wherein the at least two media are media running on the terminal device.

The initial rate corresponding to each of the at least two media may be the same or different, and is specifically referred to in table 1 and will not be described herein.

Illustratively, 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 the medium 1 to the service server at a transmission rate 10. Accordingly, the service server receives the media 1 from the terminal device at a transmission rate 10. The terminal device sends the medium 2 to the service server at a transmission rate 20. Accordingly, the service server receives media 2 from the terminal device at a transmission rate 20. The transmission rate 10 is an application layer transmission rate of the medium 1 between the terminal device and the service server, the transmission rate 10 is determined based on the candidate rate a1 in table 1, and a 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 an application layer transmission rate of the medium 2 between the terminal device and the service server, the transmission rate 20 is determined based on the candidate rate b1 in table 1, and a physical layer bit rate corresponding to the transmission rate 20 is less than or equal to the candidate rate b1.

In S402a, the terminal device sends at least two media to the first network device, and the first network device sends the at least two media to the service server. Accordingly, 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 equipment. Correspondingly, the terminal device receives at least two media from the service server.

The media and the transmission rate of the media referred to in S402b may be referred to the description of S402a, and will not be described herein.

In S402b, the service server sends at least two media to the first network device, and the first network device sends the at least two media to the terminal device. Correspondingly, the terminal equipment receives at least two media from the service server through the first network equipment.

It should be understood that the terminal device performs S402a at the time of uplink transmission. At the time of downlink transmission, the terminal device performs S402b.

In the media transmission procedure (as S402a and/or S402b are performed as described above), the first network device performs S403:

s403, the first network device determines a first physical layer bit rate of the first media running on the terminal device.

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

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

Illustratively, taking a wireless channel state change as an example, the implementation procedure of S403 will be described. As shown in fig. 4c, S403 includes the steps of:

s4031, the first network device determines the total amount of physical layer bit rate change between itself and the terminal device.

Illustratively, the first network device monitors for a predetermined period of time (e.g., 2000 ms) for a successfully transmitted data packet between itself and the terminal device. It should be appreciated that S402a and S402b may be performed one or more times. The terminal device may perform one or more times S402a within a preset time period, and/or the terminal device may perform one or more times S402b within a preset time period. The different media are transmitted in data packets between the terminal device and the service server. The first network device determines the total amount of physical layer bit rate change R between itself and the terminal device based on the number of successfully transmitted data packets _Δ . Wherein the total amount of physical layer bit rate change R _Δ The following formula is satisfied:

r _Δ1 +r _Δ2 +…+r _Δi +…+r _ΔM ＝R _Δ formula (1)

Wherein R is _Δ Representing the total amount of physical layer bit rate change, r, between itself and the terminal device as determined by the first network device _Δ1 Representing the physical layer bit rate variation, r, of the medium 1 between the terminal device and the first network device _Δ2 Representing the physical layer bit rate variation, r, of the medium 2 between the terminal device and the first network device _Δi Representing mediaPhysical layer bit rate variation of bulk i between terminal equipment and first network equipment is 1-i-M, r _ΔM Representing the amount of physical layer bit rate change of the medium M between the terminal device and the first network device. The number of media running on the terminal device is M, which are respectively denoted as media 1, media 2, … and media M. M is a positive integer greater than or equal to 2.

From the formula (1), R _Δ Characterized by the sum of the physical layer bit rate variations of the M media between the terminal device and the first network device. It should be appreciated that for the first network device, the physical layer bit rate change that the first network device is able to perceive is R _Δ The amount of physical layer bit rate change for each of the M media is not perceived.

S4032, the first network device determines the media to be rate-adjusted as the first media according to the total amount of physical layer bit rate change between itself and the terminal device and the bit rate threshold.

Illustratively, the number of bit rate thresholds is M-1, and the M-1 bit rate thresholds are different from each other, still with the number of media running on the terminal device being M. M-1 bit rate thresholds are respectively denoted as K ₁ 、K ₂ 、K ₃ 、…、K _M-1 . Wherein 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 changes the physical layer bit rate by the total amount R _Δ Comparing to a bit rate threshold:

when the bit rate of the physical layer changes by the total amount R _Δ When the formula (2) is satisfied, the first network device determines that the medium to be rate-adjusted is medium 1. Wherein, the description of the formula (2) is as follows:

R _Δ ≤K ₁ formula (2)

Wherein R is _Δ Representing the total amount of physical layer bit rate change, K, between itself and the terminal device as determined by the first network device ₁ Representing the 1 st of the M-1 bit rate thresholds.

When the bit rate of the physical layer changes by the total amount R _Δ When the formula (3) is satisfied, the first network device determines to be adjustedThe full rate media is media 2. Wherein, the description of formula (3) is as follows:

K ₁ <R _Δ ≤K ₂ formula (3)

Wherein R is _Δ Representing the total amount of physical layer bit rate change, K, between itself and the terminal device as determined by the first network device ₁ Represents the 1 st threshold, K, of the M-1 bit rate thresholds ₂ Representing the 2 nd of the M-1 bit rate thresholds.

When the bit rate of the physical layer changes by the total amount R _Δ And (3) when the formula (4) is satisfied, the first network equipment determines that the media with the rate to be adjusted is media x. Wherein, the description of the formula (4) is as follows:

K _x-1 <R _Δ ≤K _x Formula (4)

Wherein R is _Δ Representing the total amount of physical layer bit rate change, K, between itself and the terminal device as determined by the first network device _x-1 Represents the x-1 th threshold, K, of the M-1 bit rate thresholds _x Represents the xth threshold of the M-1 bit rate thresholds. x is a positive integer, and x is more than or equal to 2 and less than or equal to M-1.

S4033, the first network device determines the first physical layer bit rate according to the total amount of physical layer bit rate change between itself and the terminal device, and a predetermined bit rate.

As one possible implementation, the predetermined bit rate includes: the initial rate of the first medium between the terminal device and the first network device may be referred to the description of QoS parameters in S401, and will not be described here again.

Taking the example that the first medium is medium 1, the first physical layer bit rate satisfies the following formula:

R _1,0 +R _Δ ＝R _1,1 formula (5)

Wherein R is _1,0 Representing the initial rate of media 1 between the terminal device and the first network device, R _Δ Representing the total amount of physical layer bit rate change between itself and the terminal device as determined by the first network device, R _1,1 Representing a first object of media 1Layer-wise bit rate.

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

Taking the example that the first medium is medium 1, the first physical layer bit rate determined by the first network device at the y-th execution of S4033 satisfies the following formula:

R _1,y-1 +R _Δ ＝R _1,y formula (6)

Wherein R is _1,y-1 Representing the physical layer bit rate, R, of media 1 determined by the first network device at the y-1 st execution of S4033 _Δ Representing the total amount of physical layer bit rate change between itself and the terminal device as determined by the first network device, R _1,y Representing the first physical layer bit rate determined by the first network device at the y-th execution of S4033.

It should be appreciated that the precondition for determining the first physical layer bit rate of the first medium based on equation (6) is that the first network device stores the physical layer bit rate determined when S4033 is performed the y-1 th time. For the first network device, the first network device can record the physical layer bit rate of the first medium, and the description of S404 may be referred to herein for brevity.

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 first information to the terminal device. Accordingly, the terminal device receives the first information from the first network device.

The first information indicates a first physical layer bit rate of the first medium running on the terminal device, and the first physical layer bit rate may be referred to as description of S403, which is not repeated herein.

First, by example 1 and example 2, description is made of first information:

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

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

Second, 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 described by way of a first possible implementation and a second possible implementation:

as a first possible implementation, the type information of the first medium occupies 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 medium occupies a reserved bit in the ANBR signaling, and the first physical layer bit rate occupies a bit rate field in the ANBR signaling, as shown in fig. 5a or fig. 5 b.

It should be appreciated that fig. 5a (or fig. 5 b) is applicable to a scenario where the number of media running on the terminal device is two. The first medium may be one of two media running on the terminal device. For example, two media, denoted media 1 and media 2, respectively, are running on the terminal device. The type information of the first media has a value of 0, which represents media 1, and the type information of the first media has a value of 1, which represents media 2. Or otherwise, the type information of the first media is 0, which represents media 2, and the type information of the first media is 1, which represents media 1.

As a second possible implementation, the type information of the first medium occupies 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 medium occupies two reserved bits in the ANBR signaling, and the first physical layer bit rate occupies a bit rate field in the ANBR signaling, as shown in fig. 5 c.

It should be appreciated that fig. 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, denoted media 1, media 2, media 3, and media 4, respectively, are running on the terminal device. The type information of the first media takes a value of 00, and then media 1 is represented; the type information of the first media takes a value of 01, and then media 2 is represented; the type information of the first media takes a value of 10, and represents media 3; the type information of the first medium takes a value of 11, representing medium 4.

In fig. 5a, 5b and 5c, the multiplier field indicates a value of 0, i.e., x=0, to indicate 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 a bit rate field and a multiplier subfield in the ANBR signaling, and a value represented by the bit rate field and a value represented by the multiplier subfield together determine the first physical layer bit rate, which is not shown in fig. 5a, 5b, and 5 c. In this case, the value represented by the multiplier subfield is not 0, i.e., x=1, to indicate a certain multiple. In fig. 5a, 5b and 5c, the LCID field and DL indication field may be referred to the description of fig. 3a, and will not be repeated here.

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

the first item, the type information of the first media, may be specifically referred to the description of example 1 in S404, which is not described herein.

Second, differential rate. Wherein the differential rate is a physical layer bit rate that the first network device additionally increases or decreases for the terminal device. The differential rate is a differential rate for a 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 medium 1. The predetermined bit rate may be referred to as S4033, and will not be described herein.

In example 2, the format of the first information is described:

the type information of the first medium 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 medium occupies one reserved bit in the ANBR signaling, and the differential rate may occupy 7 bits in the ANBR signaling, such as 6 bits of the bit rate field and one reserved bit, as shown in fig. 6a or fig. 6 b. Wherein the bit rate field is used to characterize the absolute value of the differential rate, and the reserved bits are used to represent positive/negative (+/-).

Note that, in fig. 6a and 6b, the multiplier subfield indicates a value of 0, i.e., x=0, to indicate 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 occupies one reserved bit, bit rate field and multiplier subfield in the reserved field in the ANBR signaling. Wherein the value represented by the bit rate field together with the value represented by the multiplier subfield determine the absolute value of the differential rate, not shown in fig. 6a and 6 b. In this case, the value represented by the multiplier subfield is not 0, i.e., x=1, to indicate a certain multiple. In fig. 6a and 6b, the LCID field and the DL indication field may be referred to the description of fig. 3a, and will not be repeated here. Fig. 6a (or fig. 6 b) is applicable to a 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, 5 illustrations (such as fig. 5a, 5b, 5c, 6a, and 6 b) are exemplary descriptions with reference to ANBR signaling, and of course, the first information may have other format designs, which is not limited in this embodiment of the present application.

In some embodiments, for the first network device, the first network device may monitor the total amount of physical layer bit rate change between itself and the terminal device based on performing S404, when the total amount of physical layer bit rate change monitored by the first network device is equal to R in S4031 _Δ The same or close (the total amount of physical layer bit rate change as monitored by the first network device is equal to R in S4031 _Δ The difference between them is less than the threshold value), the first network device does not need to perform S404 again. In this case, the first network device updates the local information to store the physical layer bit rate between the terminal device and the first network deviceThe rate. Thus, the first network device may perform S4033 at the y+1st time to determine the first physical layer bit rate of the first medium.

Conversely, when the total amount of physical layer bit rate change monitored by the first network device is equal to R in S4031 _Δ The deviation is larger (the total amount of physical layer bit rate change monitored by the first network device is equal to R in S4031 _Δ The difference between the two is greater than or equal to the threshold), the first network device executes S404 again until the number of times of S404 repeated execution reaches the preset value, or the total amount of physical layer bit rate change monitored by the first network device and R in S4031 _Δ The same or close.

It is to 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, the total amount of physical layer bit rate change R between the first network device and the terminal device _Δ In the case of determining based on the network congestion condition, the first information may also be transmitted through example 2 in S404. Wherein the total amount of physical layer bit rate change R is determined based on network congestion conditions _Δ The process of (2) is as follows:

step 1, a first network device determines a time-frequency resource variation amount to which a terminal device is allocated.

For example, when the first network device determines that the network congestion state is worse, the number of Resource Blocks (RBs) allocated by the first network device to the terminal device is reduced. Otherwise, when the first network device determines that the network congestion state becomes 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 quantity R of physical layer bit rate change between itself and the terminal device according to the time-frequency resource change quantity _Δ 。

Illustratively, taking the example that the time-frequency resource variation includes a variation of the number of RBs, the first network device determines itself and the MCS based on the variation of the number of RBs and the modulation and coding strategy (modulation and coding scheme, MCS)Total amount of physical layer bit rate change R between terminal devices _Δ 。

For the terminal device, after the terminal device receives the first information, S405a and/or S405b are performed. The descriptions of S405a and S405b are as follows:

and S405a, the terminal equipment sends the first media to the service server at a first transmission rate. Accordingly, 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 an application layer bit rate at which 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.

The first transmission rate may be referred to as S405a, and will not be described herein.

It should be understood that in the uplink transmission, the terminal device performs S405a. In the downlink transmission process, the terminal device performs S405b.

In some embodiments, as shown in fig. 7a, the terminal device further performs S406:

s406, the terminal equipment sends second information to the first network equipment. Accordingly, the first network device receives the second information from the terminal device.

Wherein the second information indicates a desired rate of the terminal device for the first media running on the terminal device. Taking medium 1 as the first medium as an example, the desired rate of the first medium is noted asThe second information comprises the desired rate of the medium 1 +.>

Illustratively, taking ANBRQ signaling as an example, the second information may be a part of fields in the ANBRQ signaling, and in particular, reference may be made to the descriptions of fig. 7b to 7 f. In comparison with fig. 5a, 5b, 5c, 6a and 6b, the difference between fig. 7b and 7f is that the value of the bit rate field is used to indicate the desired rate of the terminal device for the first medium, or the value of the bit rate field and the value of the multiplier field together indicate the desired rate of the terminal device for the first medium. Of course, the second information may also be a field in other signaling, which is not limited by the embodiment of the present application.

It should be understood that, in the embodiment of the present application, when the second information is fig. 7b, fig. 7c or fig. 7d, the desired rate refers to the total amount of physical layer bit rate of the first medium between itself and the first network device desired by the terminal device. When the second information is fig. 7e or fig. 7f, the desired rate refers to the physical layer bit rate adjustment amount of the first medium between itself and the first network device desired 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 a first physical layer bit rate of the first media running on the terminal device with reference to the desired rate.

For example, taking a case that the expected rate is greater than zero as an example, the first network device may allocate more time-frequency resources to the terminal device, and the first network device determines the total amount of physical layer bit rate change R between itself and the terminal device based on the additionally allocated time-frequency resources and MCS _Δ . The first network device is based on the desired rateAnd total amount of physical layer bit rate change R _Δ To the first physical layer bit rate. For example, when->The first network device will expect the rate +. >Replacing the total amount of physical layer bit rate change R in equation (5) _Δ Determining a first physical layer bit rate based on the replaced formula (5); alternatively, the first network device will expect the rate +.>Replacing the total amount of physical layer bit rate change R in equation (6) _Δ The first physical layer bit rate is determined based on the replaced equation (6). When->The first network device determines the first physical layer bit rate based on equation (5) or equation (6).

It should be noted that S406 is an optional step. In case the terminal device determines the desired rate of the first medium based on the actual traffic demand, the terminal device performs S406. Accordingly, the first network device determines a first physical layer bit rate in response to the second information. Otherwise, in case the terminal device does not determine the desired rate of the first medium, the terminal device does not perform S406. In this case, the first network device may periodically perform S403, such as once every certain period of time, S403 to adjust the physical layer bit rate of the medium in real time.

In some embodiments, as shown in fig. 8, the terminal device further performs S407:

s407, the terminal equipment determines the encoding and decoding format according to the first physical layer bit rate.

The terminal device selects one codec format from a plurality of codec formats supported by itself according to 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 appreciated that each codec format corresponds to one physical layer bit rate, as shown in table 2:

TABLE 2

Coding and decoding format	Physical layer bit rate corresponding to codec format
		Codec format 1	x1
Codec format 2	y1
		Codec format 3	z1

In table 2, the physical layer bit rate corresponding to the codec format 1 is x1, the physical layer bit rate corresponding to the codec format 2 is y1, and the physical layer bit rate corresponding to the 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 When the terminal equipment determines that the coding and decoding format 1 is the selected coding and decoding format; when x1 > R _1,1 ，y1＜R _1,1 ，z1＞R _1,1 When the terminal equipment determines that the coding and decoding format 2 is the selected coding and decoding format; when x1 > R _1,1 ，y1＞R _1,1 ，z1＜R _1,1 When the terminal equipment determines that the coding and decoding format 3 is the selected coding and decoding format; when x1 > R _1,1 ，y1＜R _1,1 ，z1＜R _1,1 When y1 < z1, the terminal device determines that codec format 3 is the selected codec format.

For the terminal device, the codec format determined in S407 is recorded as a first codec format, and after the terminal device determines the first codec format, the terminal device performs S408:

s408, the terminal equipment adopts a first encoding and decoding format to encode the media data of the first media so as to obtain encoded media data.

For example, taking media 1 as an example, the terminal device encodes media data of media 1 in the first encoding/decoding format to obtain encoded media data, and the specific encoding process may refer to the related art, which is not described herein again.

For the terminal device, the first media in S404a refers to media data encoded in the first codec format, that is, after the terminal device performs S408, S405a is performed to implement uplink transmission.

In some embodiments, as shown in fig. 9, in the uplink transmission, S405a includes step a1:

and a step a1, the terminal equipment sends a first media to the service server through the third information at a first transmission rate. Accordingly, the service server receives the first media from the terminal device through the third information at the first transmission rate.

Wherein the third information further comprises information of the first codec format. It is understood that the third information includes information of the first media and the first codec format. The third information may include, for example, a name, an identification, or the like of the first codec format.

For example, taking the example that the first medium is a video signal, the third information may include a part of fields in a real-time transport control protocol (real-time transport control protocol, RTCP) message, the first medium occupies a payload field of the RTCP message, and the information in the first codec format occupies a temporary maximum code rate request (temporal max media bitrate request, TMMBN) field of the RTCP message.

For another example, taking the first media as an audio signal, the third information may include a part of fields in an RTCP packet, the first media occupies a payload field in the RTCP packet, and the information in the first codec format occupies a CMR field.

For the service server, after receiving the third information, the service server performs S409:

s409, the service server adopts the first encoding and decoding format to decode the first media.

The first codec format in S409 is identical to the first codec format in step a 1. The decoding process of the first medium may be referred to in the related art, and will not be described herein.

After determining the codec format, as shown in fig. 8, the terminal device performs S410 when transmitting downlink:

s410, the terminal equipment sends fifth information to the service server. Accordingly, the service server receives fifth information from the terminal device.

Wherein the fifth information includes information for determining the first codec format. In the downlink transmission according to the embodiment of the present application, the first codec format is a codec format used when the service server encodes the first media.

Illustratively, in the case where 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 a name, an identification, etc. of the first codec format. In the case where the determined codec format of S407 is the second codec format, the fifth information indicates the second codec format. For example, the fifth information includes a name, an identification, etc. of the second codec format.

It should be understood that, in the embodiment of the present application, the fifth information is transmitted through a first transmission channel between the terminal device and the service server, where the transmission channels are in one-to-one correspondence with the media. The first transmission channel is used for transmitting the first media. For the terminal equipment, the terminal equipment determines that a port of the first transmission channel at the terminal equipment side is a first port based on the media type of the first media, and then sends fifth information through the first port so that the fifth information is transmitted from the terminal equipment to the service server through the first transmission channel. For the service server, the service server receives the fifth information from the second port, and because the second port is a port of the first transmission channel on the service server side, the service server determines, based on the second port, that the media corresponding to the fifth information is the first media, that is, the codec format indicated by the fifth information is used for encoding the first media.

For the service server, after the service server receives the fifth information, S411 is executed:

s411, the service server determines a first encoding and decoding format according to the fifth information.

Illustratively, the implementation procedure of S411 will be described in conjunction with example 1 and example 2:

example 1, the service server uses the codec format indicated by the fifth information as the codec format of the first medium. For example, in case the fifth information indicates the first codec format, the service server takes the first codec format as the codec format of the first medium.

Example 2, the service server determines the codec format of the first medium according to the codec format indicated by the fifth information. For example, in case the fifth information indicates the second codec format, the service server takes the first codec format as the codec format of the first medium based on a certain reference factor. 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.

And S412, the service server adopts a first encoding and decoding format to encode the media data of the first media so as to obtain encoded media data.

The implementation process of S412 may refer to the description of S408, which is not described herein.

For the service server, the first media in S405b refers to media data encoded in the first codec format, that is, after the service server performs S412, S405b is performed to implement downlink transmission.

In some embodiments, as shown in fig. 9, in downlink transmission, S405b includes step b1:

and b1, the service server transmits 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 may be described as the third information in S405a, which is not described herein.

For the terminal device, after the terminal device receives the fourth information, S413 is executed:

s413, the terminal equipment adopts the first encoding and decoding format to decode the first media.

The first codec format in S413 is identical to the first codec format in step b 1. The decoding process of the first medium may be referred to in the related art, and will not be described herein.

In the above, the traffic rate adjustment method 400 is described using a single media, i.e., the first media.

The following describes a traffic rate adjustment method 1000 with reference to fig. 10 to 13b by taking a plurality of media, namely a first media and a second media as examples:

s1001, the terminal device, the first network device, and the service server execute a QoS flow establishment procedure.

The implementation process of S1001 may refer to the description of S401, which is not repeated herein.

After the QoS flow establishment is completed, media transmission is performed between the terminal device and the service server, i.e., S1002a and/or S1002b are performed. The descriptions of S1002a and S1002b are as follows:

s1002a, terminal equipment sends at least two media to a service server. Accordingly, the service server receives at least two media from the terminal device.

The implementation process of S1002a may refer to the description of S402a, which is not repeated herein.

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

The implementation process of S1002b may refer to the description of S402b, which is not repeated herein.

In the media transmission procedure (S1002 a and/or S1002b are/is performed as described above), the first network device performs S1003:

s1003, the first network device determines a first physical layer bit rate of a first medium running on the terminal device and a second physical layer bit rate of a second medium running on the terminal device.

Wherein the first media and the second media are different media of the M media running on the terminal device. Illustratively, the first media is media 1, the second media may be media 2, media 3, or media M, still in the number M of media running on the terminal device. Alternatively, the first media is media 2 and the second media may be media 3, media 4, or media M.

Wherein the first physical layer bit rate refers to a 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 a physical layer bit rate at which the second media is transmitted between the terminal device and the first network device.

Illustratively, as shown in fig. 11, S1003 includes the steps of:

s10031, the first network device determines the total amount of physical layer bit rate change between itself and the terminal device.

The implementation process of S1003 may refer to the description of S4031, which is not repeated herein.

S10032, the first network device determines a first physical layer bit rate of the first medium and a second physical layer bit rate of the second medium according to the total amount of physical layer bit rate change between itself and the terminal device and at least one rate combination.

The rate combination in S10032 may refer to the description of the candidate rate in S401, which is not repeated herein.

Illustratively, the implementation procedure of S10032 is described in conjunction with table 1:

in case the first network device adjusts the media rate for the first time after QoS flow establishment, the first network device is able to determine the initial rate sum R based on the QoS profile (see step 3 in S401 for details) ₀ I.e. the sum of the initial rates of the media being run on the terminal device. Exemplary, initial speed, for example, table 1Sum of rates R ₀ The following formula is satisfied:

R ₀ =a1+b1 equation (7)

Wherein R is ₀ Represents the sum of the initial rates of the media run on the terminal device after the QoS flow is established, a1 represents the initial rate of the media 1 run on the terminal device after the QoS flow is established, b1 represents the initial rate of the media 2 run on the terminal device after the QoS flow is established.

When the sum of candidate bit rates for all media in a certain rate combination satisfies equation (8), the first network device determines that the media in the set of rate combinations includes the first media and the second media. Wherein, the description of formula (8) is as follows:

R ₀ <A+B<R ₀ +R _Δ formula (8)

Wherein R is ₀ Representing the sum of the initial rates of the media being run on the terminal device after the QoS flow is established, a representing one candidate rate of the media 2 being run on the terminal device after the QoS flow is established, B representing one candidate rate of the media 2 being run on the terminal device after the QoS flow is established, R _Δ Representing the total amount of physical layer bit rate change between itself and the terminal device as determined by the first network device. Taking table 1 as an example, when the rate combination is the rate combination 2 in table 1, a=a2, b=b1; when the rate combination is the rate combination 3 in table 1, a=a1, b=b2; when the rate combination is the rate combination 4 in table 1, a=a2, b=b2.

In connection with table 1, after determining a set of rate combinations that satisfy equation (8), the first network device is also able to determine a first physical layer bit rate for the first medium and a second physical layer bit rate for the second medium.

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

In case the first network device adjusts the media rate z-th time after the QoS flow is established, for the first network device, the first network device records the sum R of the physical layer bit rates at the z-1-th time of adjusting the media rate _x I.e. the sum of the physical layer bit rates of the media being run on the terminal device after the z-1 st media rate adjustment. Wherein z represents a positive integer, and z is not less than 2.

When the sum of candidate bit rates for all media in a certain rate combination satisfies equation (9), the first network device determines that the media in the set of rate combinations includes the first media and the second media. Wherein, the description of the formula (9) is as follows:

R _z <A+B<R _z +R _Δ formula (9)

Wherein R is _z Representing the sum of the physical layer bit rates of the media operated on the terminal device after the z-1 th media rate adjustment after the QoS flow is established, A representing a candidate rate of the media 1 operated on the terminal device after the QoS flow is established, B representing a candidate rate of the media 2 operated on the terminal device after the QoS flow is established, R _Δ Representing the total amount of physical layer bit rate change between itself and the terminal device as determined by the first network device.

Thus, for the first network device, the first network device may determine the rate combination satisfying equation (9), thereby determining the first physical layer bit rate of the first medium and the second physical layer bit rate of the second medium, which are not described herein.

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 equipment sends first information to the terminal equipment. Accordingly, the terminal device receives the first information from the first network device.

The first information indicates a first physical layer bit rate and a second physical layer bit rate, and the first physical layer bit rate and the second physical layer bit rate may be referred to as S1003, which is not described herein.

The first information is described below by means of a first possible implementation and a second possible implementation:

as a first possible implementation, the first information includes first indication information. Wherein the first indication information indicates a first physical layer bit rate of the first medium and a second physical layer bit rate of the second medium. Illustratively, the first indication information indicates a value corresponding to a set of rates. The rate combination includes a candidate rate for each of M media running on the terminal device, M being a positive integer greater than or equal to 2, the M media including a first media and a second media.

It is to be understood that the rate combination corresponding to the value indicated 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 the rate combination 2 in table 1, the value represented by N bits corresponds to the rate combination 2.

The first indication information occupies N bits in the first information, and a numerical value represented by the N bits corresponds to one rate set. For example, if the rate combination determined in S1003 is the rate combination 2 in table 1, 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 fig. 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, S represents the number of rate combinations initially configured by the first network device, and details of the description of step 3 in S401 are described. Taking table 1 as an example, the value of S is 4 and the value of n is 2.

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

first item, first indication information. Wherein the first indication information indicates a physical layer bit rate of the first medium and a physical layer bit rate of the second medium. The first indication information may still be used in a rate combination manner to indicate the physical layer bit rate of the first medium and the physical layer bit rate of the second medium, and may refer to a description of a first possible implementation manner in the first information, which is not repeated herein.

The second term, the first adjustment factor. Wherein the first adjustment factor includes a first rate adjustment factor for the first medium and a second rate adjustment factor for the second medium. For example, if the rate combination determined in S1003 is the rate combination 2 in table 1, 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 that 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 physical layer bit rate and the second rate adjustment factor of the second medium are used to determine the second physical layer bit rate.

The first indication information occupies N bits in the first information, and a numerical value represented by the N bits corresponds to one rate set. The first adjustment factor occupies L bits in the first information, L being a positive integer less than or equal to M. For example, if the rate combination determined in S1003 is the rate combination 2 in table 1, the values of M, N and L are both 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 fig. 12.

It should be appreciated that fig. 12 applies to a scenario in which the number of media is at least two running on the terminal device. In fig. 12, the LCID field and the DL indication field may be referred to the description of fig. 3a, and will not be repeated here. Fig. 12 is an exemplary description with reference to ANBR signaling, however, the first information may have other format designs, which is not limited in this embodiment of the present application.

For the terminal device, after the terminal device receives the first information, S1005a and/or S1005b are performed. The descriptions of S1005a and S1005b are 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. Accordingly, the service server receives the first media from the terminal device at a first transmission rate and receives the second media from the terminal device at a second transmission rate.

Wherein the second transmission rate is determined based on the second physical layer bit rate. The second transmission rate refers to an application layer bit rate at which 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 transmits the first media to the terminal device at the first transmission rate, and transmits 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 a first transmission rate and receives the second media from the service server at a second transmission rate.

The first transmission rate and the second transmission rate may be described in S1005a, and will not be described herein.

It should be understood that in the uplink transmission, the terminal device performs S1005a. In the downlink transmission, the terminal device performs S1005b.

In some embodiments, as shown in fig. 13a, the terminal device further performs S1006:

s1006, the terminal equipment sends second information to the first network equipment. Accordingly, the first network device receives the second information from the terminal device.

Wherein the second information indicates a desired rate of the terminal device for the first media running on the terminal device and a desired rate of the terminal device for the second media running on the terminal device.

The second information is described below by way of a first possible implementation and a second possible implementation:

as a first possible implementation, the second information includes second indication information. Wherein the second indication information indicates a desired rate of the terminal device for the first media running on the terminal device and a desired rate of the terminal device for the second media running on the terminal device. Illustratively, the second indication information indicates a value corresponding to a set of rates. The second indication information indicates a desired rate of the first medium and a desired rate of the second medium by indicating a rate combination. The second indication information occupies N bits in the second information, and specifically, reference may be made to description of the first indication information, which is not repeated herein.

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

the first item, the second instruction information. Wherein the second indication information indicates a physical layer bit rate of the first medium and a physical layer bit rate of the second medium. The second indication information may still be used in a rate combination manner to indicate the physical layer bit rate of the first medium and the physical layer bit rate of the second medium, and may be referred to as a description of a first possible implementation manner in the second information, which is not repeated herein.

The second term, the first adjustment factor. Wherein the second adjustment factor comprises a desired rate adjustment factor for the first medium and a desired rate adjustment factor for the second medium.

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 desired rate adjustment factor of the first medium are used to determine the desired rate of the first medium, and 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 numerical value represented by the N bits corresponds to one rate set. The second adjustment factor occupies L bits in the second information, L being a positive integer less than or equal to M. For example, if the desired rate combination determined by the terminal device is the rate combination 2 in table 1, the values of M, N and L are both 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 fig. 13 b.

It should be appreciated that fig. 13b is applicable to a scenario in which the number of media running on the terminal device is at least two. In fig. 13b, the LCID field and the UL indication field may be referred to the description of fig. 3b, and will not be repeated here. Fig. 13b is an exemplary description with reference to ANBRQ signaling, however, the second information may have other formats, which are not limited by the embodiment of the present application.

For the first network device, after the first network device receives the second information, the first network device determines a first physical layer bit rate of the first medium running on the terminal device with reference to a desired rate of the first medium, and determines a second physical layer bit rate of the second medium running on the terminal device with reference to the desired rate of the second medium.

For example, taking a case that the expected rate is greater than zero as an example, the first network device may allocate more time-frequency resources to the terminal device, and the first network device determines the total amount of physical layer bit rate change R between itself and the terminal device based on the additionally allocated time-frequency resources and MCS _Δ . The first network device is based on the desired rateAnd total amount of physical layer bit rate change R _Δ To the first physical layer bit rate and the second physical layer bit rate. For example, when->The first network device will expect the rate/>Replacing the total amount of physical layer bit rate change R in equation (8) _Δ Determining a first physical layer bit rate and a second physical layer bit rate based on the replaced formula (8); alternatively, the first network device will expect the rate +.>Replacing the total amount of physical layer bit rate change R in equation (9) _Δ The first physical layer bit rate and the second physical layer bit rate are determined based on the replaced equation (9). When->The first network device determines a first physical layer bit rate and a second physical layer bit rate based on equation (8) or equation (9).

It should be understood that, in the service rate adjustment method 1000 according to the embodiment of the present application, the terminal device determines the codec format of the first medium and the codec format of the second medium, which may be described in S407. The encoding and decoding formats of the first medium and the second medium may be the same or different, which is not limited in the embodiment of the present application.

In uplink transmission or downlink transmission, for the encoding, transmission and decoding process of each medium (such as the first medium or the second medium), reference may be made to the description in the service rate adjustment method 400 in the embodiment of the present application, which is not repeated here.

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

Example two

The second embodiment mainly describes a second method for adjusting a service rate. In a second traffic rate adjustment method, the medium for which the transmission rate is to be adjusted is determined by the terminal device. The media to be adjusted in transmission rate may be one or more. Next, a second service rate adjustment method according to an embodiment of the present application will be described in detail with reference to fig. 14 to 15 b.

In the service rate adjustment method provided by the embodiment of the application, the terminal equipment receives the first information from the first network equipment. Wherein the first information indicates an amount of physical layer bit rate change 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 said first media from the service server at the 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 simultaneously operated on the terminal device, it is possible to determine, based on the first information, the media to be adjusted in transmission rate as the first media, and further adjust the transmission rate of the first media between the terminal device and the service server based on the first physical layer bit rate. For example, when the wireless channel state is poor and/or the network congestion condition is poor, the transmission rate of the first medium between the terminal device and the service server is reduced, that is, the application layer bit rate of the first medium is reduced, so as to ensure the reliability of the medium transmission. Conversely, when the wireless channel state is better and/or the network congestion condition is better, the transmission rate of the first media between the terminal equipment and the service server is increased, namely the bit rate of the application layer of the first media is increased, so as to increase the media transmission rate.

As shown in fig. 14, a traffic rate adjustment method 1400 according to an embodiment of the present application includes the following steps:

s1401, the terminal device, the first network device, and the service server perform a QoS flow establishment procedure.

The implementation process of S1401 may refer to the description of S401, and will not be described herein.

After the QoS flow establishment is completed, media transmission is performed between the terminal device and the service server, i.e., S1402a and/or S1402b are performed. The descriptions of S1402a and S1402b are as follows:

and 1402a, the terminal device sends at least two media to the service server. Accordingly, the service server receives at least two media from the terminal device.

The implementation process of S1402a may refer to the description of S402a, which is not repeated herein.

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.

The implementation process of S1402b may refer to the description of S402b, which is not repeated herein.

In the media transmission procedure (S1402 a and/or S1402b are/is performed as described above), for the first network device, the first network device performs S1403:

s1403, the first network device determines the total amount of physical layer bit rate change between itself and the terminal device.

The implementation process of S1403 may be referred to the description of S4031, which is not repeated here.

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

Wherein the first information indicates a total amount of physical layer bit rate change. The total amount of physical layer bit rate change can be referred to as the description of the differential rate in example 2 in S404, and will not be repeated here.

Illustratively, the format of the first information is as follows: the total amount of physical layer bit rate change may occupy 7 bits in the first information. Taking ANBR signaling as an example, the total amount of physical layer bit rate change occupies one reserved bit in the ANBR signaling, e.g., 6 bits of the bit rate field and one bit in the reserved field, as shown in fig. 15a or 15 b. Wherein the bit rate field is used to characterize the absolute value of the total amount of physical layer bit rate change, and the reserved bit is used to indicate positive/negative.

In fig. 15a and 15b, the multiplier field indicates a value of 0, i.e., x=0, to indicate a multiplier of 1. Alternatively, the total amount of physical layer bit rate change may occupy 8 bits in the first information, and specifically, reference may be made to description of differential rate, which is not repeated herein. In fig. 15a and 15b, the LCID field and the DL indication field may be referred to the description of fig. 3a, and will not be repeated here. Fig. 15a and 15b are applicable to a scenario in which the number of media is two running on the terminal device.

For the terminal device, after the terminal device receives the first information, S1405 or S1407 is performed. The descriptions of S1405 and S1407 are as follows:

s1405, the terminal equipment determines a first physical layer bit rate of the first media according to the total physical layer bit rate change amount.

For an example, the implementation procedure of S1405 may be referred to the description of S4032 and S4033 in S403, which are not described herein.

For the terminal device, after the terminal device performs S1405, S1406a and/or S1406b are performed. The descriptions of S1406a and S1406b are as follows:

s1406a, the terminal device sends the first media to the service server at the first transmission rate. Accordingly, the service server receives the first media from the terminal device at the first transmission rate.

For an example, the implementation process of S1406a may refer to the description of S405a, which is not repeated herein.

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 an example, the implementation process of S1406b may refer to the description of S405b, which is not repeated herein.

S1407, the terminal equipment determines the first physical layer bit rate of the first media and the first physical layer bit rate of the second media according to the total physical layer bit rate change amount.

For example, the implementation process of S1407 may refer to the descriptions of S10032 and S10033 in S1003, which are not described herein.

For the terminal device, after the terminal device performs S1407, S1408a and/or S1408b are performed. The descriptions of S1408a and S1408b are 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. Accordingly, the service server receives the first media from the terminal device at a first transmission rate and receives the second media from the terminal device at a second transmission rate.

For an example, the implementation process of S1408a may refer to the description of S1005a, which is not repeated herein.

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 a first transmission rate and receives the second media from the service server at a second transmission rate.

For an example, the implementation process of S1408b may refer to the description of S1005b, which is not repeated herein.

It should be understood that, in the service rate adjustment method 1400 according to the embodiment of the present application, the terminal device determines the codec format of the first medium and the codec format of the second medium, which can be referred to as description in S407. The encoding and decoding formats of the first medium and the second medium may be the same or different, which is not limited in the embodiment of the present application.

In uplink transmission or downlink transmission, for the encoding, transmission and decoding process of each medium (such as the first medium or the second medium), reference may be made to the description in the service rate adjustment method 400 in the embodiment of the present application, which is not repeated here. In addition, in the downlink transmission, the terminal device may provide the codec format of the media to the service server, see introduction of S410.

The scheme provided by the embodiment of the application is mainly introduced from the interaction angle among the network elements. Correspondingly, the embodiment of the application also provides a communication device, which can be the network element in the embodiment of the method, or a device containing the network element, or a component applicable to the network element. It will be appreciated that the communication device, in order to achieve the above-described functions, comprises corresponding hardware structures and/or software modules performing the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

By way of example, fig. 16 illustrates a schematic structural diagram of a communication device 1600. The communication apparatus 1600 includes a processing unit 1601, a transmitting unit 1602, and a receiving unit 1603.

In a possible example, taking the communication apparatus 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 in fig. 4a needs to perform. The sending unit 1602 is configured to support the terminal device to perform S402a and S405a in fig. 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 configured to support the terminal device to perform S402b, S404, S405b in fig. 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 apparatus 1600 as the first network device as an example, the processing unit 1601 is configured to support the first network device to perform S403 in fig. 4a and/or other processing operations that the first network device needs to perform in an embodiment of the present application. The sending unit 1602 is configured to support the first network device to perform S404 in fig. 4a, and/or other sending operations that the first network device needs to perform in an 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 yet another possible example, taking the communication device 1600 as a service server, the processing unit 1601 is configured to support the service server to perform other processing operations that the service server needs to perform in fig. 4 a. The sending unit 1602 is configured to support the service server to perform S402b and S405b in fig. 4a, and/or other sending operations that the service server needs to perform in the embodiment of the present application. The receiving unit 1603 is configured to support the service server to perform S402a and S405a in fig. 4a, and/or other receiving operations that the service server needs to perform in the embodiment of the present application.

In yet another possible example, taking the communication apparatus 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 in fig. 10 needs to perform. The sending unit 1602 is configured to support the terminal device to perform S1002a and S1005a in fig. 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 configured to support the terminal device to perform S1002b, S1004, S1005b in fig. 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 apparatus 1600 as the first network device as an example, the processing unit 1601 is configured to support the first network device to perform S1003 in fig. 10, and/or other processing operations that the first network device needs to perform in an embodiment of the present application. The sending unit 1602 is configured to support the first network device to perform S1004 in fig. 10, and/or other sending operations that the first network device needs to perform in an 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 yet another possible example, taking the communication device 1600 as a service server, the processing unit 1601 is configured to support the service server to perform other processing operations that the service server needs to perform in fig. 10. The sending unit 1602 is configured to support the service server to perform S1002b and S1005b in fig. 10, and/or other sending operations that the service server needs to perform in the embodiment of the present application. The receiving unit 1603 is configured to support the service server to perform S1002a and S1005a in fig. 10, and/or other receiving operations that the service server needs to perform in the embodiment of the present application.

In yet another possible example, taking the communication apparatus 1600 as a terminal device, the processing unit 1601 is configured to support the terminal device to perform S1405 and S1407 in fig. 14, and/or other processing operations that the terminal device needs to perform in an embodiment of the present application. The sending unit 1602 is configured to support the terminal device to perform S1402a, S1406a, S1408a in fig. 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 configured to support the terminal device to perform S1402b, S1404, S1406b, S1408b in fig. 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 apparatus 1600 as the first network device as an example, the processing unit 1601 is configured to support the first network device to perform S1403 in fig. 14 and/or other processing operations that the first network device needs to perform in an embodiment of the present application. The sending unit 1602 is configured to support the first network device to perform S1404 in fig. 14, and/or other sending operations that the first network device needs to perform in an 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 yet another possible example, taking the communication device 1600 as a service server, the processing unit 1601 is configured to support the service server to perform other processing operations that the service server needs to perform in fig. 14. The sending unit 1602 is configured to support the service server to perform S1402b, S1406b, S1408b in fig. 14, and/or other sending operations that the service server needs to perform in the embodiment of the present application. The receiving unit 1603 is configured to support the service server to perform S1402a, S1406a, S1408a in fig. 14, and/or other receiving operations that the service server needs to perform in the embodiment of the present application.

Optionally, the communication device 1600 may further include a storage unit 1604 for storing program code and data of the communication device, where the data may include, but is not limited to, raw data or intermediate data.

The processing unit 1601 may be a processor or controller, for example, a CPU, general purpose processor, application specific integrated circuit (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic device, transistor logic device, hardware components, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules and circuits described in connection with this disclosure. A processor may also be a combination that performs computing functions, e.g., including one or more microprocessors, a combination of a DSP and a microprocessor, and so forth.

The transmitting unit 1602 may be a communication interface, which is a generic term, a transmitter, or a transmitting circuit, etc., which may include multiple interfaces in a particular implementation.

The receiving unit 1603 may be a communication interface, which is a generic term, a receiver, or a receiving circuit, etc., which may include multiple interfaces in a particular implementation.

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

The storage 1604 may be a memory.

When the processing unit 1601 is a processor, the transmitting unit 1602 and the receiving unit 1603 are communication interfaces, and the storage unit 1604 is a memory, the communication apparatus according to the embodiment of the present application may be as shown in fig. 17.

Referring to fig. 17, the communication apparatus 1700 includes: a processor 1701, a communication interface 1702, and a memory 1703. Optionally, the communication device may also include a bus 1704. Wherein the communication interface 1702, the processor 1701 and the memory 1703 may be interconnected via a bus 1704; the bus 1704 may be a peripheral component interconnect standard (peripheral component interconnect, PCI) bus or an extended industry standard architecture (extended industry standard architecture, EISA) bus, or the like. The bus 1704 may be classified as an address bus, a data bus, a control bus, or the like. For ease of illustration, only one thick line is shown in fig. 17, but not only one bus or one type of bus.

Optionally, an embodiment of the present application further provides a computer program product carrying computer instructions that, when run on a computer, cause the computer to perform the method described in the above embodiment.

Optionally, an embodiment of the present application further provides a computer readable storage medium, where computer instructions are stored, which when run on a computer, cause the computer to perform the method described in the above embodiment.

Optionally, an embodiment of the present application further provides a chip, including: processing circuitry and transceiver circuitry for implementing the methods described in the above embodiments. Wherein the processing circuit is used for executing the processing actions in the corresponding method, and the transceiver circuit is used for executing 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 in software, 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 loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device including one or more servers, data centers, etc. that can be integrated with the available medium. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., solid state disk (solid state drive, SSD)), etc.

In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the modules is merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or modules, which may be in electrical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of devices. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

From the above description of embodiments, it will be clear to a person skilled in the art that the present application may be implemented by means of software plus necessary general purpose hardware, but of course also by means of hardware, the former being in many cases a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or contributing part in the form of a software product stored in a readable storage medium, such as a floppy disk, a hard disk, or an optical disk of a computer, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments of the present application.

The foregoing is merely illustrative of specific embodiments of the present application, and the present application is not limited to these embodiments, but is intended to cover modifications and alternatives within the technical scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A traffic rate adjustment method, comprising:

the method comprises the steps that first network equipment determines a first physical layer bit rate of first media running on terminal equipment, wherein the terminal equipment is in wireless connection with the first network equipment;

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 bit rate is used for determining a transmission rate of the first media running on the terminal device between the terminal device and a service server.

2. The method according to claim 1, wherein the method further comprises:

the first network device determining a second physical layer bit rate of a second medium running on the terminal device;

Wherein the first information further indicates a second physical layer bit rate of the second media running on the terminal device, the second physical layer bit rate being used to determine a transmission rate of the second media running on the terminal device between the terminal device and the traffic server.

3. The method of claim 2, wherein the first information occupies N bits, the N bits representing values corresponding to a set of rates, the set of rates comprising a candidate rate for each of M media running on the terminal device, M being a positive integer greater than or equal to 2, the M media comprising the first media and the second media.

4. The method of claim 1, wherein the step of determining the position of the substrate comprises,

the first information includes type information of the first media.

5. The method of claim 4, wherein the step of determining the position of the first electrode is performed,

the first information includes the first physical layer bit rate; or alternatively, the process may be performed,

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

6. The method according to any of claims 1-5, wherein before the first network device sends the first information to the terminal device, the method further comprises:

the first network device receives second information from the terminal device, wherein the second information indicates at least a desired rate of the terminal device for the first media running on the terminal device, the desired rate of the first media being used by the first network device to determine the first physical layer bit rate.

7. The method of claim 6, wherein prior to the first network device receiving the second information from the terminal device, the method further comprises:

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

wherein the configuration information includes at least one of: the method comprises the steps of enabling M media running on the terminal equipment to be in type information and information of at least two rate combinations, wherein each rate combination in the at least two rate combinations comprises a candidate rate of each media in the M media, M is a positive integer greater than or equal to 2, and the M media comprise the first media.

8. A traffic rate adjustment method, comprising:

the method comprises the steps that a terminal device receives first information from a first network device, wherein the first information indicates a first physical layer bit rate of first media running on the terminal device, and the terminal device is connected with the first network device in a wireless mode;

the terminal equipment sends the first media to a service server at a first transmission rate, and/or the terminal equipment 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.

9. The method of claim 8, wherein the method further comprises:

the terminal equipment sends second media to the service server at a second transmission rate, and/or the terminal equipment 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, the first information further indicating the second physical layer bit rate of the second media running on the terminal device.

10. The method of claim 9, wherein the first information occupies N bits, the N bits representing values corresponding to a set of rates, the set of rates comprising a candidate rate for each of M media running on the terminal device, M being a positive integer greater than or equal to 2, the M media comprising the first media and the second media.

11. The method of claim 8, wherein the step of determining the position of the first electrode is performed,

the first information includes type information of the first media.

12. The method of claim 11, wherein the step of determining the position of the probe is performed,

13. The method according to any of claims 8-12, wherein before the terminal device receives the first information from the first network device, the method further comprises:

the terminal device sends second information to the first network device, wherein the second information at least indicates a desired rate of the terminal device for the first media running on the terminal device, and the desired rate of the first media is used for the first network device to determine the first physical layer bit rate.

14. The method according to any one of claims 8-13, wherein,

the terminal equipment sends the first media to the service server through third information at the first transmission rate, wherein the third information further comprises information in a first coding and decoding format, and the first coding and decoding format is at least used for decoding the first media at the service server; and/or the number of the groups of groups,

the terminal equipment receives the first media from the service server through fourth information at the first transmission rate, wherein the fourth information further comprises information of the first coding and decoding format, and the first coding and decoding format is at least used for decoding the first media at the terminal equipment.

15. The method of claim 14, wherein prior to the terminal device receiving the first media from the service server via fourth information at the first transmission rate, the method further comprises:

the terminal device sends fifth information to the service server, wherein the fifth information comprises 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.

16. The method of claim 15, wherein the step of determining the position of the probe is performed,

the fifth information indicates the first codec format.

17. The method of claim 15, wherein the step of determining the position of the probe is performed,

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

18. The method according to any of claims 15-17, wherein the fifth information comprises a field in a real time transport protocol RTP message, the field indicating a codec format of a medium comprising the first medium.

19. A communication device, comprising: a processor and a memory, the processor and the memory being coupled, the memory storing program instructions that, when executed by the processor, cause the communication device to perform the method of any one of claims 1-7 or any one of claims 8-18.

20. A chip comprising a processor and an input-output interface for receiving signals from other devices than the chip and transmitting signals from the processor to the processor or sending signals from the processor to other devices than the chip, the processor being configured to implement the method of any one of claims 1-7 or any one of claims 8-18 by logic circuitry or execution of code instructions.

21. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program which, when run on a communication device, causes the communication device to perform the method of any one of claims 1-7 or the method of any one of claims 8-18.