WO2023155739A1

WO2023155739A1 - Data transmission method, network device, and user equipment

Info

Publication number: WO2023155739A1
Application number: PCT/CN2023/075463
Authority: WO
Inventors: 丁开朝; 严宝亮; 郝红霞
Original assignee: 华为技术有限公司
Priority date: 2022-02-18
Filing date: 2023-02-10
Publication date: 2023-08-24
Also published as: CN116669132A

Abstract

The present application provides a data transmission method and apparatus. The method comprises: a first network device receives first indication information from a second network device, the first indication information comprising at least one application data type identifier and an identifier of at least one user equipment, wherein the application data type identifier is used for identifying a data type; the first network device establishes a one-to-one correspondence mapping relationship between at least one data stream in a data channel and the at least one application data type identifier according to the first indication information, wherein the data channel is a channel between the first network device and the user equipment for transmitting application data; and the first network device sends mapping relationship information to the second network device and the at least one user equipment, the mapping relationship information indicating the mapping relationship, and the mapping relationship information being used for the second network device and the user equipment to determine the data stream transmitting the application data. The data transmission method and apparatus of the present application can improve the application data transmission efficiency.

Description

Method of data transmission, network equipment and user equipment

Cross References to Related Applications

This application claims the priority of the Chinese patent application with the application number 202210149086.9 and the application title "data transmission method, network equipment and user equipment" filed with the China Patent Office on February 18, 2022, the entire contents of which are incorporated herein by reference In this application.

technical field

The present application relates to the communication field, and more specifically, to a data transmission method, network equipment and user equipment.

Background technique

The 5G network IP multimedia system (ip multimedia subsystem, IMS) data channel real-time interactive channel technology supports the two parties in the voice call or video call and other scenarios through the stream control transmission protocol (stream control transmission protocol, SCTP) transmission protocol. At the same time, multiple non-interfering data streams are established to transmit various types of data, that is, one data stream only transmits one type of data, so that the two parties in the call can also interact on the basis of voice calls or video calls. It is inefficient for the existing user equipment to traverse the data streams, determine the data streams capable of transmitting the specified data type for data transmission, and for the server to perform route negotiation among multiple data streams. Therefore, how to improve the efficiency of data transmission through data streams has become an urgent problem to be solved at this stage.

Contents of the invention

The present application provides a data transmission device, network device, and user equipment, which simplifies the process of routing negotiation between multiple data streams by the second network device, improves the route matching efficiency of the second network device, and further improves the efficiency of passing data. Efficiency in streaming application data. In addition, the process of traversing the data stream when the user equipment transmits the application data is avoided, and the efficiency of transmitting application data through the data stream is further improved.

In a first aspect, a data transmission method is provided, the method comprising: a first network device receiving first indication information from a second network device; the first indication information includes at least one application data type identifier and at least one user equipment The identification of the application data type, wherein the application data type identification is used to identify the data type; the first network device establishes a one-to-one mapping relationship between at least one data flow in the data channel and at least one application data type identification according to the first indication information, wherein , the data channel is a channel for transmitting application data between the first network device and the user equipment; the first network device sends mapping relationship information to the second network device and at least one user equipment, and the mapping relationship information indicates the above mapping relationship.

For example, the first indication information is determined by the second network device according to the service scenario of the user equipment. Specifically, according to the service scenario, the second network device can determine all data types involved in the service scenario of the user equipment and the Identification information of all user equipment in a business scenario.

Exemplarily, the foregoing service scenario may be a service initiated by the user equipment, or may be a service initiated by the second network device.

Exemplarily, the first network device defines a label tag in an extended session description protocol (session description protocol, SDP) as an application data type identifier according to the first indication information and the specified user equipment.

Based on the above technical solution, the first network device sends the mapping relationship information to the second network device and the user equipment, When routing and distributing application data, the second network device can determine the data route of the application data according to the mapping relationship information and the data type of the application data, that is, determine the data flow for transmitting the application data, which simplifies the second The process in which the network device performs route negotiation among multiple data streams improves the route matching efficiency of the second network device, thereby improving the efficiency of transmitting application data through the data streams. It can also avoid the process of traversing the data stream when the user equipment transmits the application data, further improving the efficiency of transmitting the application data through the data stream.

With reference to the first aspect, in some implementation manners of the first aspect, the first network device receives first data from the user equipment through a data stream, where the first data includes application data and an identifier of at least one target user equipment, and the data The flow is determined by the user equipment according to the mapping relationship information and the data type of the application data; the first network equipment sends the first data to the second network equipment.

Based on the above technical solution, the process of traversing the data stream when the user equipment transmits the application data is avoided, and the efficiency of transmitting application data through the data stream is further improved.

In combination with the first aspect, in some implementations of the first aspect, the first indication information further includes the server address of the second network device; the first network device uses the hypertext transfer protocol (hyper text transfer protocol, HTTP) according to the server address. ) data channel to send the first data to the second network device.

With reference to the first aspect, in some implementation manners of the first aspect, the first data further includes second indication information, where the second indication information is used to indicate a manner in which the second network device performs data processing on the application data.

For example, the data processing manner indicated by the second indication information may be that application data is not processed, that is, application data only needs to be transparently transmitted.

For example, when the first data does not include the second indication information, it also indicates that the application data only needs to be transmitted transparently.

With reference to the first aspect, in some implementation manners of the first aspect, the first network device receives second data from the second network device, where the second data includes third data and third indication information, and the third data is The second network device generates the application data after data processing, and the third indication information is determined by the second network device according to the mapping relationship information and the data type of the third data.

When the second network device routes and distributes the application data according to the above mapping relationship, specifically, according to the data type of the application data and the identifier of the target user equipment, it can determine the unique data flow that can transmit the application data, and then generate the second 3. Instructions.

With reference to the first aspect, in some implementation manners of the first aspect, the first network device determines a data flow for transmitting the third data according to the third indication information; the first network device sends the data flow to at least one target user equipment through the data flow The above third data.

Based on the above technical solution, when the second network device routes and distributes the application data, it can determine the data route of the application data according to the mapping relationship information and the data type of the application data, that is, determine the data flow for transmitting the application data, simplifying The process of the second network device performing route negotiation between multiple data streams is improved, the route matching efficiency of the second network device is improved, and the efficiency of transmitting application data through the data streams is further improved.

With reference to the first aspect, in some implementation manners of the first aspect, the application data type identifier is further used to identify an application name, and the application name is used by the user equipment to determine the user equipment application that receives the third data from the data stream.

For example, when the user equipment receives application data from the data stream, it can determine the application data type identifier corresponding to the data stream according to the above mapping relationship information. Since the application data type identifier is also used to identify the application name, the user equipment can determine to receive the application data. The specific user device application of application data.

Based on the above technical solution, when the user equipment receives application data from the data stream, the specific user equipment application that receives the application data can be determined without parsing the application data, thereby further improving the number of applications transmitted through the data stream. According to the efficiency. In addition, when multiple applications of the user equipment send application data of the same data type at the same time, it can also avoid the situation that a data flow needs to transmit the application data of the same data type of the above-mentioned multiple applications at the same time, resulting in data flow blocking, thereby improving It improves the efficiency of transferring application data through the data stream.

With reference to the first aspect, in some implementation manners of the first aspect, the data channel is created by the first network device according to an instruction of the second network device.

For example, the data channel may be created by the first network device according to the first instruction information, or may be created by other instructions from the second network device.

In a second aspect, a data transmission method is provided, the method includes: a second network device determines first indication information according to a service scenario of a user equipment, and the first indication information includes at least one application data type identifier and at least one user equipment The identification of the application data type is used to identify the data type; the second network device sends the first indication information to the first network device; the second network device receives the mapping relationship information from the first network device, and the mapping relationship information indicates A one-to-one mapping relationship between at least one data flow and at least one application data type identifier; the second network device determines a data flow for transmitting application data from the at least one data flow based on the mapping relationship information.

For example, the first network device defines the label tag in the extended SDP as the application data type identifier according to the first indication information and the specified user equipment.

For example, when the second network device routes and distributes the application data, it can determine the data flow capable of transmitting the application data of the data type according to the above mapping relationship information and the data type of the application data.

With reference to the second aspect, in some implementation manners of the second aspect, the second network device receives first data from the first network device, where the first data includes application data and an identifier of at least one target user equipment.

With reference to the second aspect, in some implementations of the second aspect, the above-mentioned first indication information further includes the server address of the second network device; the second network device receives the HTTP data channel sent by the first network device according to the server address. first data.

With reference to the second aspect, in some implementation manners of the second aspect, the above-mentioned first data further includes second indication information, where the second indication information is used to indicate a manner in which the second network device performs data processing on the application data.

With reference to the second aspect, in some implementation manners of the second aspect, the second network device sends the second data to the first network device, where the second data includes third data and third indication information, where the third data is It is generated by the second network device after processing the application data, and the third indication information is generated by the second network device according to the above mapping relationship information Determined by the data type of the third data, the third indication information is used to instruct the first network device to select a data stream for transmitting the third data.

With reference to the second aspect, in some implementation manners of the second aspect, the application data type identifier is further used to identify an application name, and the application name is used by the user equipment to determine the user equipment application that receives the third data from the data stream.

Based on the above technical solution, when the user equipment receives application data from the data stream, the specific user equipment application receiving the application data can be determined without parsing the application data, thereby further improving the efficiency of transmitting application data through the data stream. In addition, when multiple applications of the user equipment send application data of the same data type at the same time, it can also avoid the situation that a data flow needs to transmit the application data of the same data type of the above-mentioned multiple applications at the same time, resulting in data flow blocking, thereby improving It improves the efficiency of transferring application data through the data stream.

In a third aspect, a data transmission method is provided, the method includes: a user equipment receives mapping relationship information from a first network device, the mapping relationship information indicates that at least one data flow and at least one application data type identifier are one by one A corresponding mapping relationship, wherein the application data type identifier is used to identify the data type; the user equipment determines a data flow for transmitting application data from the at least one data flow based on the mapping relationship information.

For example, when the user equipment sends application data to the first network device, because the above mapping relationship information is known, the user equipment only needs to determine the data type of the application data, and then determine the data flow for transmitting the application data.

With reference to the third aspect, in some implementation manners of the third aspect, the user equipment sends first data to the first network device through a data stream, where the first data includes application data and an identifier of at least one target user equipment, and the data stream is It is determined by the user equipment according to the mapping relationship information and the data type of the application data.

With reference to the third aspect, in some implementation manners of the third aspect, the above-mentioned first data further includes second indication information, where the second indication information is used to indicate a manner in which the second network device performs data processing on the application data.

With reference to the third aspect, in some implementation manners of the third aspect, the user equipment receives the third data from the first network device through a data stream, where the data stream is sent by the first network device according to the third data sent by the second network device. Determined by the indication information, the third indication information is determined by the second network device according to the above mapping relationship information and the data type of the third data.

With reference to the third aspect, in some implementation manners of the third aspect, the application data type identifier is also used to identify an application name, and the application name is used by the user equipment to determine the user equipment application that receives the third data from the data stream.

For example, when the user equipment receives application data from the data stream, it can determine the application data type identifier corresponding to the data stream according to the above mapping relationship information. Since the application data type identifier is also used to identify the application name, the user equipment can determine to receive the application data. The specific user equipment application of the application data, and the application data is received and processed by the user equipment application.

In a fourth aspect, a network device is provided, and the network device includes:

A transceiver unit, configured to receive first indication information from the second network device, where the first indication information includes at least one application data type identifier and at least one user equipment identifier, where the application data type identifier is used to identify the data type;

A processing unit, configured to establish a one-to-one mapping relationship between at least one data flow in the data channel and at least one application data type identifier according to the above-mentioned first indication information, where the data channel is a link between the first network device and the user equipment A channel for transferring application data;

In addition, the above-mentioned transceiving unit is further configured to send mapping relationship information to the second network device and at least one user equipment, where the mapping relationship information indicates the mapping relationship.

For example, the first network device defines the label tag in the extended SDP protocol as the application data type identifier according to the first indication information.

Based on the above technical solution, the first network device sends the mapping relationship information to the second network device and the user equipment, enabling the second network device to route and distribute the application data according to the mapping relationship information and the data type of the application data, namely The data route of the application data can be determined, that is, the data flow for transmitting the application data can be determined, which simplifies the process of routing negotiation between multiple data flows by the second network device, improves the route matching efficiency of the second network device, and further Improves the efficiency of streaming application data. It can also avoid the process of traversing the data stream when the user equipment transmits the application data, further improving the efficiency of transmitting the application data through the data stream.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the transceiver unit is further configured to receive first data from the user equipment through a data stream, where the first data includes application data and an identifier of at least one target user equipment, the The data flow is determined by the user equipment according to the mapping relationship information and the data type of the application data; in addition, the transceiver unit is further configured to send the first data to the second network device.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first indication information further includes the server address of the second network device; the transceiver unit is also configured to send the server address to the second network device through the HTTP data channel according to the server address. first data.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the first data further includes second indication information, where the second indication information is used to indicate a manner in which the second network device performs data processing on the application data.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiver unit is further configured to receive second data from the second network device, where the second data includes third data and third indication information, and the third data The third indication information is generated by the second network device after processing the application data, and the third indication information is determined by the second network device according to the above mapping relationship information and the data type of the third data.

Based on the above technical solution, the process of routing negotiation between multiple data streams by the second network device is simplified, avoiding the process of traversing data streams when the second network device distributes the application data, and improving the performance of the second network device. Route matching efficiency, thereby improving the efficiency of transmitting application data through data streams.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the transceiver unit is further configured to send the third data to at least one target user equipment through a data flow, where the data flow is determined by the first network device according to the third indication information.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the application data type identifier is also used to identify an application name, and the application name is used by the user equipment to determine the user equipment application that receives the third data from the data stream.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the processing unit is further configured to create the data channel according to an instruction of the second network device.

For example, the foregoing data channel may be created by the processing unit according to the foregoing first instruction information, or may be created according to other instructions from the second network device.

In a fifth aspect, a network device is provided, and the network device includes:

A determining unit, configured to determine first indication information according to a service scenario of the user equipment, where the first indication information includes at least one application data type identifier and at least one user equipment identifier, where the application data type identifier is used to identify a data type;

The transceiver unit is configured to send the first indication information to the first network device; and is also configured to receive mapping relationship information from the first network device, where the mapping relationship information indicates a relationship between at least one data stream and at least one application data type identifier One-to-one mapping relationship;

The determining unit is further configured to determine a data flow for transmitting application data from the at least one data flow based on the mapping relationship information.

For example, the first indication information is determined by the determining unit according to the service scenario of the user equipment. Specifically, according to the service scenario, the determining unit can determine all data types involved in the service scenario of the user equipment and all data types involved in the service scenario. Identification information for all user devices.

Exemplarily, the above service scenario may be a service initiated by the user equipment, or may be a service initiated by the communication device.

For example, when the transceiver unit routes and distributes the application data, it can determine the data stream capable of transmitting the application data of the data type according to the above mapping relationship information and the data type of the application data.

Based on the above technical solution, when the sending and receiving unit routes and distributes the application data, it can determine the data routing of the application data according to the mapping relationship information and the data type of the application data, that is, determine the data flow for transmitting the application data, which simplifies the sending and receiving The process in which the unit performs route negotiation between multiple data streams improves the routing matching efficiency of the transceiver unit, thereby improving the efficiency of transmitting application data through data streams.

With reference to the fifth aspect, in some implementation manners of the fifth aspect, the transceiving unit is further configured to receive first data from the first network device, where the first data includes the application data and an identifier of at least one target user equipment.

With reference to the fifth aspect, in some implementations of the fifth aspect, the above-mentioned first indication information also includes the server address of the device; a data.

With reference to the fifth aspect, in some implementation manners of the fifth aspect, the above-mentioned first data further includes second indication information, where the second indication information is used to indicate a manner in which the device performs data processing on the application data.

With reference to the fifth aspect, in some implementation manners of the fifth aspect, the device further includes a processing unit, configured to perform data processing on the above application data according to the second indication information, to generate third data.

With reference to the fifth aspect, in some implementation manners of the fifth aspect, the determining unit is further configured to determine third indication information according to the mapping relationship information and the data type of the third data, where the third indication information is used to indicate that the first network device A data stream for transmitting the third data is selected.

With reference to the fifth aspect, in some implementation manners of the fifth aspect, the transceiving unit is further configured to send second data to the first network device, where the second data includes third data and third indication information.

For example, the first network device can determine a data flow for transmitting the third data according to the third indication information, and send the third data to the target user equipment through the data flow.

With reference to the fifth aspect, in some implementation manners of the fifth aspect, the application data type identifier is further used to identify an application name, and the application name is used by the user equipment to determine the user equipment application that receives the third data from the data stream.

Based on the above technical solution, when the user equipment receives application data from the data stream, the specific user equipment application receiving the application data can be determined without parsing the application data, thereby further improving the efficiency of transmitting application data through the data stream. In addition, when multiple applications of the user equipment send application data of the same data type at the same time, it is also possible to avoid a data stream that needs to transmit application data of the same data type of the above-mentioned multiple applications at the same time, resulting in data flow blocking situation, thereby improving the efficiency of transferring application data through data streams.

In a sixth aspect, a user equipment is provided, and the user equipment includes:

A communication unit, configured to receive mapping relationship information from the first network device, where the mapping relationship information indicates a one-to-one mapping relationship between at least one data flow and at least one application data type identifier, wherein the application data type identifier is used to identify type of data;

The communication unit is further configured to determine a data flow for transmitting application data from the at least one data flow based on the mapping relationship information.

For example, when the above-mentioned communication unit sends application data to the first network device, since the above-mentioned mapping relationship information is known, the user equipment can select a specified data stream to transmit the application data according to the data type of the application data.

Based on the above technical solution, the process of traversing the data stream when the above communication unit transmits the application data is avoided, and the efficiency of transmitting application data through the data stream is further improved.

With reference to the sixth aspect, in some implementation manners of the sixth aspect, the communication unit is further configured to send first data to the first network device through a data flow, where the first data includes application data and an identifier of at least one target user equipment, the The data flow is determined by the communication unit according to the mapping relationship information and the data type of the application data.

With reference to the sixth aspect, in some implementation manners of the sixth aspect, the above-mentioned first data further includes second indication information, and the second indication information is used to instruct the second network device to perform data processing on the application data. Way.

With reference to the sixth aspect, in some implementation manners of the sixth aspect, the communication unit is further configured to receive the third data from the first network device through a data stream, where the data stream is sent by the first network device according to the second network device The third indication information is determined by the second network device according to the above mapping relationship information and the data type of the third data.

With reference to the sixth aspect, in some implementation manners of the sixth aspect, the application data type identifier is also used to identify an application name, and the application name is used by the communication unit to determine the user equipment application that receives the third data from the data stream.

For example, when the above-mentioned communication unit receives application data from the data stream, it can determine the application data type identifier corresponding to the data stream according to the above-mentioned mapping relationship information. Since the application data type identifier is also used to identify the application name, the communication unit can determine the received The application data is specific to the user equipment application, and the application data is received and processed by the communication unit application.

Based on the above technical solution, when the communication unit receives application data from the data stream, it can determine the specific user equipment application receiving the application data without parsing the application data, thereby further improving the efficiency of transmitting application data through the data stream. In addition, when multiple applications of the communication unit send application data of the same data type at the same time, it can also avoid the situation that a data flow needs to transmit the application data of the same data type of the above-mentioned multiple applications at the same time, resulting in data flow blocking, thereby improving It improves the efficiency of transferring application data through the data stream.

In the seventh aspect, there is provided a device for data transmission, the device is used to implement the method in any possible implementation manner in the method design of the first aspect, or is used to implement any of the method designs in the second aspect The method in one possible implementation manner, or the method in any one possible implementation manner in the method design for realizing the third aspect.

In an eighth aspect, a device for data transmission is provided, which is characterized in that it includes a processor, and the processor and storage The memory is used to store computer programs or instructions, and the processor is used to execute the computer programs or instructions in the memory, so that the method in any possible implementation manner in the method design of the first aspect is executed, or, so that The method in any possible implementation manner in the method design of the second aspect is executed, or the method in any possible implementation manner in the method design of the third aspect is executed.

In the ninth aspect, there is provided a computer-readable storage medium storing computer programs or instructions, and the computer programs or instructions are used to implement the method in any possible implementation manner in the method design of the first aspect, or, the first aspect The method in any possible implementation manner in the method design of the second aspect, or the method in any possible implementation manner in the method design of the third aspect.

In a tenth aspect, a computer program product is provided. The computer program product includes a computer program or an instruction. When the computer program or instruction is executed by a computer, the device executes the method in any possible implementation manner of the first aspect. The method, or, the method in any possible implementation manner in the method design of the second aspect, or, the method in any possible implementation manner in the method design in the third aspect.

In an eleventh aspect, a communication system for data transmission is provided, including one or more of the devices involved in the methods of the first aspect to the third aspect.

Description of drawings

FIG. 1 is a schematic diagram of a network architecture of a data transmission method provided by an embodiment of the present application.

Fig. 2 is a schematic diagram of a method for creating a data channel between a first network device and a user equipment provided in an embodiment of the present application.

Fig. 3 is a flowchart of a method for creating a data channel between a first network device and a user equipment provided in an embodiment of the present application.

Fig. 4 is a schematic diagram of a data channel established between a first network device and a user equipment according to an embodiment of the present application.

Fig. 5 is another schematic diagram of the data channel established between the first network device and the user equipment provided by the embodiment of the present application.

FIG. 6 is a schematic diagram of data channels respectively established between a first network device and multiple user equipments according to an embodiment of the present application.

Fig. 7 is a schematic diagram of a user equipment sending application data through a data channel according to an embodiment of the present application.

Fig. 8 is a flow chart of sending application data by a user equipment through a data channel provided by an embodiment of the present application.

FIG. 9 is a schematic diagram of user equipment receiving application data through a data channel provided by an embodiment of the present application.

Fig. 10 is a flowchart of user equipment receiving application data through a data channel provided by an embodiment of the present application.

FIG. 11 is a schematic diagram of data transmission between a first network device and a second network device according to an embodiment of the present application.

FIG. 12 is a flow chart of data processing and routing distribution of application data by the second network device provided in the embodiment of the present application.

FIG. 13 is a flow chart of creating a data routing table by a second network device provided in an embodiment of the present application.

Fig. 14 is a flow chart of data channel creation and data transmission provided by the embodiment of the present application.

Fig. 15 is a schematic block diagram of a data transmission device 1500 provided by an embodiment of the present application.

FIG. 16 is a schematic block diagram of a data transmission device 1600 provided by an embodiment of the present application.

FIG. 17 is a schematic block diagram of a data transmission device 1700 provided by an embodiment of the present application.

Detailed ways

The technical solution in this application will be described below with reference to the accompanying drawings.

The technical solution of the embodiment of the present application can be applied to various communication systems, for example: long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex) , TDD), universal mobile telecommunications system (universal mobile telecommunications system, UMTS), fifth generation (5th generation, 5G) mobile telecommunications system or new radio (new radio, NR), etc. Wherein, the 5G mobile communication system may include non-standalone networking (non-standalone, NSA) and/or standalone networking (standalone, SA).

The technical solution provided by this application can also be applied to future communication systems, such as the sixth generation mobile communication system. The communication system can also be a public land mobile network (PLMN), a device-to-device (D2D) network, a machine-to-machine (M2M) network, or an Internet of Things (Internet of Things). things, IoT) network or other networks. Wherein, the IoT network may include, for example, the Internet of Vehicles. Among them, the communication methods in the Internet of Vehicles system are collectively referred to as V2X (X stands for anything). For example, the V2X communication includes: vehicle to vehicle (vehicle to vehicle, V2V) communication, vehicle to roadside infrastructure (vehicle to infrastructure, V2I ) communication, vehicle to pedestrian (V2P) or vehicle to network (V2N) communication, etc.

In addition, in this embodiment of the application, the user equipment can also be the user equipment in the IoT system. IoT is an important part of the development of information technology in the future. Its main technical feature is to connect items to the network through communication technology, so as to realize Interconnection, an intelligent network that interconnects things. In the embodiment of this application, the IoT technology can achieve massive connections, deep coverage, and terminal power saving through, for example, narrow band NB technology.

In addition, the network device in the embodiment of the present application may be a device for communicating with user equipment, and the network device may be a global system for mobile communications (GSM) system or a code division multiple access (code division multiple access, The base transceiver station (BTS) in CDMA) can also be the base station (NodeB, NB) in the wideband code division multiple access (wideband code division multiple access, WCDMA) system, and it can also be the evolved base station in the LTE system (evolved NodeB, eNB or eNodeB), it can also be a wireless controller in the cloud radio access network (cloud radio access network, CRAN) scenario, or the network device can be a relay station, access point, vehicle-mounted device, wearable device As well as the network equipment in the 5G network or the network equipment in the evolved PLMN network, etc., this embodiment of the present application is not limited.

In the embodiment of the present application, the user equipment or network equipment includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also called main memory). The operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating system, Unix operating system, Android operating system, iOS operating system, or windows operating system. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. Moreover, the embodiment of the present application does not specifically limit the specific structure of the execution subject of the method provided by the embodiment of the present application, as long as the program that records the code of the method provided by the embodiment of the present application can be run to provide the method according to the embodiment of the present application. For example, the execution body of the method provided by the embodiment of the present application may be a user device or a network device, or a functional module in the user device or network device that can call a program and execute the program.

In order to facilitate understanding of the embodiments of the present application, terms and concepts involved in the embodiments of the present application are explained first.

1. Application data is data generated by the user equipment application, and the data has a corresponding data type. It should be understood that after the application data is generated by the user equipment application, the data type of the application data can be determined. Additionally, application data can be generated by The user equipment sends to the network equipment, may also be processed by the network equipment, and may also be forwarded by the network equipment.

2. The SCTP protocol is a protocol for simultaneously transmitting multiple data streams between two ends of a network connection. The SCTP protocol can provide an association between a client and a server, and through this association, applications can be provided with reliability, sequencing, flow control, and full-duplex data transmission. An association refers to a communication between two systems. The SCTP protocol is message-oriented. It provides sequential transmission services for each record. The length of each record written by the sender is transmitted to the receiver application along with the data stream. The main feature of the SCTP protocol is the transmission of multiple data streams. Based on the SCTP protocol, application data is sent in different data streams. There can be multiple data streams from the sender to the receiver. The application data transmitted in the same data stream is ordered, and the application data transmitted between different data streams Data is out of order, so data transfer between different data streams is relatively independent. Therefore, the blockage caused by data transmission failure in a certain data stream will not affect the data delivery of other data streams.

3. The data channel is a 5G network IMS real-time interactive data channel defined by the 3rd generation partnership project (3GPP). The data channel is created by the network device based on the SDP protocol, and a data channel should contain at least one data channel. flow. In addition, the data channel is based on the SCTP protocol to transmit application data through data streams.

4. The data stream is a data sequence of a set of ordered bytes with a starting point and an ending point. Based on SCTP, a data flow is identified by a data flow ID, and the data transmission process of each data flow is independent of each other.

5. The application control server is a server-side network device. The existing application control server can be used to create a data channel, and can also be used to process the application data from the user equipment, and can also be used to process the application data. Routing distribution.

6. The SDP protocol is mainly used for media negotiation between two session entities. It can use different transport protocols, including session announcement protocol (session announcement protocol, SAP), session initiation protocol (session initialization protocol, SIP), real-time streaming protocol (rapid spanning tree protocol, RTSP), multipurpose Internet mail extension type ( multipurpose internet mail extensions (MIME) and hypertext transfer protocol. The SDP protocol is mainly to solve the problem of unequal capabilities among members participating in the session, and can be widely used in network environments and applications. The content of the SDP protocol includes: session name and session purpose, connection information, bandwidth, session activation time, session media composition, media receiving information (address, port, format, etc.), etc. The SDP protocol negotiation uses two models: request and response. The subject corresponding to the request model is called the requester, and the subject corresponding to the response model is called the responder. The two entities are only logically distinguished and can be converted under certain conditions. The requester sends a request message to the responder, and the content of the request message includes the media stream type, the encoding set used by each media stream, and the IP and port to be used to receive the media stream. After the responder receives the request message, it replies a response message to the requester. The content of the response message includes the media encoding to be used, whether to receive the media stream, and notifies the requester of the IP and port used to receive the media stream.

7. The HTTP protocol is an application layer protocol for distributed, collaborative and hypermedia information systems. The HTTP protocol is the basis of data communication for the World Wide Web. The HTTP protocol is a standard for client-side and server-side requests and responses. By using a web browser, web crawler or other tools, the client initiates an HTTP request to a specified port (the default port is 80) on the server. In this scenario, the client is usually called a user agent. Some resources, such as HTML files and images, are stored on the answering server, and the answering server is usually called the source server. There may be multiple "middle layers" between the user agent and the origin server, such as proxy servers, gateways, or tunnels. Usually, the client needs to request server resources or upload data such as files to the server through the specified access address, and the server communicates with the client through the HTTP protocol after receiving the request.

It should be understood that the data channel is also used for transmission between the client terminal and the server, but the data channel is created based on the HTTP protocol. Data channels are collectively referred to as HTTP data channels.

As mentioned above, the SCTP protocol supports both parties in a voice call or video call to simultaneously establish multiple non-interfering data streams to transmit various types of data under the data channel, that is, one data stream only transmits one type of data. type of data.

However, after the existing calling and called user equipments establish a call, both the calling and called user equipments start terminal applications. When the user equipments transmit application data to each other through the data stream in the data channel based on the SCTP protocol, since the user equipments cannot know The data type corresponding to the data stream, so even if the user equipment knows the data type of the application data, it needs to traverse the data stream in the data channel to determine the data stream that can transmit the application data of this data type. This method has low data transmission efficiency; When the control server routes and distributes application data, since the application control server cannot know the data type corresponding to the data flow, even if the application control server knows the data type of the application data, it needs to traverse the data flow in the data channel to determine a path from the application control server. The data routing between the server and the user equipment that can transmit the application data of this data type, the data transmission efficiency of this method is low; in addition, after the user equipment receives the application data sent through the data stream, it needs to analyze the application data, In order to determine the specific user equipment application receiving the application data, the data transmission efficiency of this method is low.

In view of this, the embodiment of the present application provides a method and device for data transmission. When the first network device creates a data channel, an application data type identifier is specified for each data flow, thereby establishing a connection between the application data type identifier and the data flow. One-to-one mapping relationship, the application data type identifier is used to identify the data type, and the above mapping relationship is used as the basis for the user equipment to select data stream transmission application data and the second network device to route and distribute the application data, thus simplifying the user's The process of device data transmission and the process of routing negotiation between multiple data streams by the second network device improve the efficiency of transmitting application data through data streams.

To facilitate understanding of the embodiment of the present application, a network architecture of the embodiment of the present application is described in detail first with reference to FIG. 1 .

FIG. 1 is a schematic diagram of a network architecture applicable to a data transmission method provided by an embodiment of the present application. The system includes user equipment, first network equipment and second network equipment.

It should be understood that user equipment may be referred to as user equipment (user equipment, UE), terminal, access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device , User Agent, or User Device. The UE can also be 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), having a wireless communication function Handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, user equipment in future 5G networks or users in future evolved public land mobile networks (PLMN) Devices, etc., can also be terminal devices, logical entities, smart devices, such as mobile phones, smart terminals and other user equipment. It needs to support the establishment and maintenance of 5G IMS data channels, and install multimedia applications based on user equipment to establish data channels, which can provide audio, video, pictures, files, application interaction data and other types of data. For the convenience of understanding, in the following embodiments of the present application, "user equipment" is used uniformly for description.

It should be understood that the first network device may be a data channel media server. In the embodiment of the present application, the first network device is mainly used to create a data channel between itself and the user equipment, and to establish a connection between the application data type identifier and the data stream. One-to-one mapping relationship, and according to the routing instruction of the second network device, the application data processed by the second network device is sent to the target user equipment through the specified data stream.

It should be understood that the second network device may be an application control server. In the embodiment of the present application, the second network device is mainly used to instruct the above-mentioned first network device to create a data channel and perform data processing on the application data from the user equipment, and Route and distribute the processed application data.

It should be understood that the technical solution of the embodiment of the present application may be applicable to a call scenario between a calling user equipment and a called user equipment, and may also be applicable to a call between a calling user equipment and multiple called user equipment The scenario may also be a service scenario in which a user equipment directly requests data resources from a server, and this embodiment of the present application does not limit specific applicable scenarios.

In an embodiment, the first network device and the second network device may be deployed in the carrier's basic network, and in the basic network, the first network device transmits application data and/or signaling data to the second network device through the HTTP protocol. The second network device, or receive the processed application data and/or signaling data sent by the second network device.

In one embodiment, the first network device and the second network device can be deployed as unit modules in the same network device, for example, an application control server, but data can still be exchanged between the first network device and the second network device. Interaction, that is, the deployment manner of the first network device and the second network device, does not affect the process of data interaction between the two, which is not limited in this embodiment of the present application.

FIG. 2 shows a schematic diagram of a method for creating a data channel between a first network device and a user equipment provided in an embodiment of the present application.

It should be understood that before the first network device establishes a data channel with the user equipment, the first network device receives the first indication information from the second network device, and the first indication information is determined by the second network device according to the user equipment's Determined by the business scenario, the first indication information includes at least one application data type identifier and user equipment identifier.

The first network device establishes a data channel with the specified user equipment through the SDP protocol according to the above first indication information, and defines the label tag in the extended SDP protocol as an application data type identifier.

It should be understood that a data channel includes at least one data stream, and each data stream has a unique data stream ID, and a data stream ID corresponds to an application data type identifier. Therefore, the relationship between the data stream ID and the application data type identifier There is a one-to-one mapping relationship between them, that is, there is also a one-to-one mapping relationship between data streams and application data type identifiers.

FIG. 3 shows a flowchart of a method for creating a data channel between a first network device and a user equipment provided in an embodiment of the present application.

S310. The first network device receives first indication information from the second network device, where the first indication information includes at least one application data type identifier and at least one user equipment identifier, where the application data type identifier is used to identify a data type.

It should be understood that the above-mentioned first indication information is determined by the second network device according to the service scenario of the user equipment. Specifically, the second network device can obtain the user equipment identifier and the All data types and user equipment identifiers involved in the business scenario, and generate the above-mentioned first indication information.

In addition, there may be one or more user equipment identifiers included in the first indication information, which is not limited in this embodiment of the present application.

S320, the first network device establishes a one-to-one mapping relationship between at least one data flow in the data channel and at least one application data type identifier according to the first indication information, and the data channel is used between the first network device and the user equipment A channel for transferring application data.

It should be understood that, according to the above first indication information, the first network device defines the label tag in the extended SDP protocol as the application data type identifier.

It should be understood that the data channel may be created by the first network device according to the information carried in the first indication information, or may be created through other indication manners in the second indication information, which is not limited in this embodiment of the present application.

It should be understood that a data channel includes at least one data stream, each data stream has a unique data stream ID, and a data stream corresponds to an application data type identifier, therefore, there is an There is a one-to-one mapping relationship, that is, there is also a one-to-one mapping relationship between the data stream ID and the application data type identifier.

S330. The first network device sends mapping relationship information to the second network device and at least one user equipment, where the mapping relationship information indicates the mapping relationship.

In an embodiment, when the first network device and the second network device belong to the basic network of the operator, the above-mentioned first indication information may further include the server address of the second network device. The first network device sends the application data from the user equipment to the second network device based on the HTTP protocol according to the server address.

In one embodiment, the second network device can create a data routing table according to the mapping relationship information, and when routing and distributing the application data, the data routing of the application data can be determined by referring to the above data routing table, which simplifies the process of the second network device. The process of routing negotiation between multiple data streams improves the route matching efficiency of the second network device, thereby improving the efficiency of transmitting application data through the data streams. In addition, the process of traversing the data stream when the user equipment transmits the application data is avoided, and the efficiency of transmitting application data through the data stream is further improved.

In an embodiment, the above-mentioned application data type identifier may also include an application name, and the format of the application data type identifier may be uniformly defined as: application name.data type. Therefore, it can be seen from the above description that there may also be a one-to-one mapping relationship among data streams, application names, and data types.

In an embodiment, after receiving the mapping relation information sent by the first network device, the second network device may create a data routing table containing the above mapping relation information, and route and distribute the application data according to the routing table.

The data routing table can be in the following form:

Application 1. Data Type 1:

(User Device 1, Data Stream 1)

(User Device 2, Data Stream 1)

(User Device 3, Data Stream 1)

Application 1. Data Type 2:

(User Device 1, Data Stream 2)

(User Device 2, Data Stream 2)

(User Device 3, Data Stream 2)

Therefore, when multiple applications of the user equipment send application data of the same data type at the same time, the application data can be routed and distributed according to the above routing table, so as to avoid The resulting data flow congestion ensures the orderly transmission of application data and improves the efficiency of application data transmission.

In addition, the user equipment can also start monitoring the specified data stream in the data channel according to the application name in the application data type identifier. When the user equipment monitors the application data sent by the data stream specified in the data channel, it does not need to analyze the application data. According to the data stream ID, the application data type identifier corresponding to the data stream can be determined, and then the user equipment application receiving the application data can be determined, which improves the efficiency of the user equipment in processing application data.

It should be understood that when the application data type identifier only includes the data type, the foregoing method of creating the data routing table is also applicable, which is not limited in this embodiment of the present application.

It should be understood that the second network device may implement route distribution of the application data according to the mapping relationship information and the data type of the application data in a manner other than the data routing table, which is not limited in this embodiment of the present application.

When the application data type identifier is used to identify the application name and data type, the data channel created between the first network device and the user equipment may be in the following two forms:

Fig. 4 shows a schematic diagram of a data channel established between a first network device and a user equipment provided in an embodiment of the present application. It can be seen from the example in FIG. 4 that the user equipment needs to use two applications in this call: application 1 and application 2.

A data channel is created between the first network device and the user equipment, and the data channel includes three data streams: data stream 1 , data stream 2 and data stream 3 .

Wherein, the application data type identifier corresponding to data stream 1 is: application 1. data type 1;

The application data type identifier corresponding to data stream 2 is: application 1. data type 2;

The application data type identifier corresponding to the data stream 3 is: application 2. data type 1 .

Fig. 5 shows another schematic diagram of the data channel established between the first network device and the user equipment provided by the embodiment of the present application. It can be seen from the example in FIG. 5 that the user equipment needs to use two applications in this call: application 1 and application 2.

Two data channels are created between the first network device and the user device: data channel 1 and data channel 2, each data channel only transmits application data generated by a specified application, and correspondingly allocates multiple data streams to transmit different data respectively type of application data.

FIG. 6 shows a schematic diagram of data channels respectively established between a first network device and multiple user equipments according to an embodiment of the present application.

It should be understood that in the business scenario of data interaction between multiple user equipments, it can be seen from the example in FIG. Back-to-back" creation mode, that is, the data flow IDs in the two data channels and the application data type identifiers corresponding to the data flow IDs are the same.

Specifically, taking the data stream 1 that exists in the above two data channels as an example, although data stream 1 exists in both data channel 1 and data channel 2, the two data streams 1 only have the same data stream ID, essentially are two data streams belonging to different data channels.

FIG. 7 shows a schematic diagram of a user equipment sending application data through a data channel provided by an embodiment of the present application.

The schematic diagram uses the application data type identifier to identify the application name and data type as an example.

Application 1 of the user equipment generates application data, and the user equipment can determine the data type of the application data, that is, data type 1 . The user equipment determines the data flow (data flow 1) for transmitting the application data according to the application name (application 1) and the data type (data type 1) of the application data.

It should be understood that when the application data type identifier is only used to identify the data type, the user equipment can still determine the data flow for transmitting the application data according to the application data type identifier, which will not be elaborated here.

FIG. 8 shows a flow chart of sending application data by a user equipment through a data channel provided by an embodiment of the present application.

S810, the application of the user equipment generates first data, where the first data includes application data and an identifier of at least one target user equipment.

It should be understood that the foregoing user equipment is a user equipment serving as a sending end.

In an embodiment, the first data may further include second indication information, where the second indication information is used to indicate how the second network device performs corresponding data processing on the application data after receiving the application data.

It should be understood that the data processing method may also be no data processing, that is, transparent transmission, and the data type of the processed application data may be the original data type or a new data type.

It should be understood that when the first data does not include the second indication information, it also indicates that the application data only needs to be transparently transmitted.

It should be understood that the identifier of at least one target user equipment may be used to indicate the user equipment as the receiving end, and the user equipment as the receiving end may be all user equipments except the user equipment Part of the user equipment other than the user equipment at the sending end may also be the user equipment at the sending end, which is not limited in this embodiment of the present application.

S820. The user equipment determines a data flow for transmitting the first data in the data channel according to the application data type identifier corresponding to the application data, and sends the application data to the first network device through the data flow.

It should be understood that based on the above method for the user equipment to send application data through the data channel, the process of traversing the data stream when the user equipment sends the application data is avoided, and the efficiency of transmitting application data through the data stream is further improved.

FIG. 9 shows a schematic diagram of user equipment receiving application data through a data channel provided by an embodiment of the present application.

In one embodiment, when the application data type identifier is used to identify the application name and data type. It can be seen from the above description that the user equipment can start the corresponding application according to the application name and enable monitoring of the corresponding data stream.

It can be seen from the example in FIG. 9 that the user equipment monitors that the application data is received from the data stream 3, and the user equipment does not need to analyze the application data, and can determine the application name corresponding to the data stream according to the data stream ID of the data stream 3, that is, Application 1, so that the application data is directly handed over to Application 1 for processing, thereby improving the efficiency of the user equipment in processing application data.

FIG. 10 shows a flow chart of a user equipment receiving application data through a data channel provided by an embodiment of the present application.

It should be understood that this process is applicable to the scenario where the application data type identifier is used to identify the application name and data type.

S1010. The user equipment receives application data through a data stream.

It should be understood that, when the user equipment receives the application data, the data flow transmitting the application data may be determined through a data flow monitoring method, and the ID of the data flow may be obtained.

S1020. The user equipment delivers the application data to a designated application for processing according to the application data type identifier corresponding to the data flow ID.

It should be understood that before this, the first network device has established a one-to-one mapping relationship between the data flow ID and the application data type identifier, so the user equipment can determine the application corresponding to the data flow after determining the data flow ID .

FIG. 11 shows a schematic diagram of data transmission between a first network device and a second network device according to an embodiment of the present application.

In an embodiment, unlike the method of data transmission between the first network device and the user equipment through a data channel, the first network device and the second network device may be two network devices deployed in the operator's basic network, The two exchange data through the HTTP protocol. It should be understood that there is also a data channel between the first network device and the second network device, but the data channel can be established based on the HTTP protocol. For the convenience of description, the data channel is collectively referred to as HTTP in this embodiment. data channel.

In one embodiment, the second network device can send the first indication information to the first network device through the HTTP data channel, and the information includes: the server address of the second network device, the user device identifier and all data types involved in the business scenario . Wherein, the server address of the second network device is used to enable the first network device to send the application data to the second network device through the HTTP data channel after receiving the application data of the user device, and is also used for the first network device to send the application data to the second network device through the data channel After the establishment, the mapping relationship information is sent to the second network device through the HTTP data channel, and the mapping relationship information indicates a one-to-one mapping relationship between at least one data stream and at least one application data type identifier.

In an embodiment, the second network device sends the processed application data and the third indication information for routing control to the first network device through the HTTP data channel.

FIG. 12 shows a flow chart of data processing and routing distribution of application data by the second network device provided by the embodiment of the present application.

S1210. The second network device receives first data, where the first data includes application data, second indication information, and an identifier of at least one target user equipment, and the second indication information is used to instruct the second network device to perform data processing on the application data .

It should be understood that the target user equipment is the user equipment serving as the receiving end.

S1220. The second network device performs data processing on the application data according to the second indication information to generate third data.

It should be understood that the above third data is application data processed by the second network device, and the second network device can determine the application data type identifier corresponding to the third data during data processing.

In an embodiment, the manner in which the second network device performs data processing on the first data may be no data processing, that is, transparent transmission. The third data may be an original data type, or a new data type.

S1230. The second network device generates third indication information according to the mapping relationship information and the application data type identifier corresponding to the third data, where the third indication information is used to instruct the first network device to send a data stream of the third data to the target user equipment.

Specifically, the third indication information may be in the following form:

target user equipment identification 1-data flow 1;

target user equipment identification 2-data stream 1;

S1240. The second network device sends second data to the first network device, where the second data includes third data and third indication information.

It should be understood that, after the first network device receives the second data from the second network device, it can determine the target user equipment receiving the third data and the designated data path for transmitting the third data according to the third indication information, and then can transfer the third data The data is sent to the target user equipment through the specified data stream.

The above solution of the second network device routing and distributing the application data avoids the process of the application control server traversing the data stream capable of transmitting the third data in the data channel, and improves the efficiency of route matching of the application control server.

In one embodiment, after the second network device receives the above mapping relationship information, it can create a data routing table according to the mapping relationship information, and the data routing table is used to record the application data of different data types between the user equipment and the first network device. The transmission route between them, the transmission route corresponding to the application data is determined through the data routing table.

It should be understood that the transmission route may be a specified data flow.

FIG. 13 shows a flow chart of creating a data routing table by the second network device provided by the embodiment of the present application.

S1310. The second network device receives mapping relationship information from the first network device, where the mapping relationship information indicates a one-to-one mapping relationship between at least one data flow and at least one application data type identifier.

S1320. The second network device creates a data routing table according to the foregoing mapping relationship information and the identifier of at least one user equipment.

Specifically, when the application data type identifier is used to identify the application name and data type, the data routing table can be in the following format:

Application 1. Data Type 1:

(User Device 1, Data Stream 1)

(User Device 2, Data Stream 1)

(User Device 3, Data Stream 1)

Application 1. Data Type 2:

(User Device 1, Data Stream 2)

(User Device 2, Data Stream 2)

(User Device 3, Data Stream 2)

Application 1. Data Type 3:

(User Equipment 1, Data Stream 3)

(User Device 2, Data Stream 3)

(User Equipment 3, Data Stream 3)

The following describes the example where the first network device is a data channel media server and the second network device is an application control server. In this embodiment, the application control server is specifically an AR application control server, and the business scenario between user equipment is specifically A video call scenario, and user equipment can use AR applications to interact.

FIG. 14 shows a flow chart of data channel creation and data transmission provided by the embodiment of the present application.

The first user equipment initiates a video call to the second user equipment, the two parties establish a call connection, and the AR application control server can obtain the call event information.

It should be understood that in the video interface of the first user equipment, there are two pictures, one picture is the video picture of the user of the first user equipment as the first interface, and the other picture is the video picture of the user of the second user equipment as the second interface. interface. In the video interface of the second user equipment, there are also two pictures, one picture is the video picture of the user of the second user equipment as the first interface, and the other picture is the video picture of the user of the first user equipment as the second interface; The embodiment of the present application does not make any limitation on the foregoing video interface.

After the AR application control server obtains the above call event information, it determines the IDs of the user equipments of the two parties establishing the call, and determines that the AR application in this business scenario involves the following three types of application data in total: video transmission data, video echo data, and interaction control data.

S14010, the AR application control server generates first indication information, which includes: the server address of the AR application control server, the first user equipment identifier, the second user equipment identifier, the AR application name, and the above three application data types. The first indication information may be determined by the AR application control value server according to the above call event information, and the information may be in the following form:

The first user equipment identifier (AR application. video transmission data, AR application. video echo data, AR application. interactive control data), the server address of the AR application control server;

The second user equipment identifier (AR application. video transmission data, AR application. video echo data, AR application. interactive control data), the server address of the AR application control server;

S14020. The AR application control server sends first indication information to the data channel media server.

S14030. After receiving the first indication information, the data channel media server creates a first data channel with the first user equipment.

Specifically, after the data channel media server determines the above information, it establishes the first data channel with the first user equipment through the SDP protocol. When the data channel media server creates a data channel, the label tag in the extended SDP protocol is defined as an application data type identifier, and the application data type identifier is specifically in the form of "application name.data type". Since the business scenario involves three types of application data, the first data channel includes three data streams, which are simply referred to as: data stream 1 , data stream 2 and data stream 3 in this embodiment.

In this embodiment, the application data type identifier corresponding to data stream 1 is: AR application. Video transmission data;

The application data type identifier corresponding to data stream 2 is: AR application. Video echo data;

The application data type identifier corresponding to data stream 3 is: AR application. interactive control data;

Exemplarily, the label tag in the extended SDP protocol dcmap is as follows:

Video transmission data stream Stream1: a=dcmap:38754max-time=150; label="AR.vedio";

Video echo data stream Stream2: a=dcmap:48754max-time=150; label="AR.echo";

Interactive control data stream Stream3: a=dcmap:7216max-retr=5; label="AR.ia";

Wherein, dcmap is the first mapping table representing the corresponding relationship between the above attributes, and the number after the dcmap field is the data stream ID.

It should be understood that the mapping table is only an expression form of the mapping relationship information, and the mapping relationship information may also be expressed in other ways, which is not limited in this embodiment of the present application.

According to the above dcmap, AR in the label tag is an AR application, vedio is a video transmission data type, echo is a video echo data type, and ia is an interactive control data type. It should be understood that the technical solutions of the embodiments of the present application can be implemented according to the contents of the data stream ID and the label in the above dcmap.

S14040. The data channel media server sends the first mapping table to the first user equipment.

Similarly, at S14050, the AR application control server creates a second data channel through a session negotiation protocol.

Specifically, after the data channel media server determines the above information, it establishes the second data channel with the second user equipment through the SDP protocol. When creating a data channel, define the label tag in the extended SDP protocol as an application data type identifier, and the application data type identifier is specifically expressed in the form of "application name.data type". Since the service scenario involves three types of application data, the second data channel also includes three data streams, which are also referred to as: data stream 1 , data stream 2 and data stream 3 for short in this embodiment.

Exemplarily, the label tag in the extended SDP protocol dcmap is as follows:

Video echo data stream Stream2: a=dcmap:48754max-time=150; label="AR.echo";

Interactive control data stream Stream3: a=dcmap:7216max-retr=5; label="AR.ia";

Wherein, dcmap is a second mapping table representing the corresponding relationship between the above attributes, and the numbers after the dcmap field are data stream IDs. According to the above dcmap, AR in the label tag is an AR application, vedio is a video transmission data type, echo is a video echo data type, and ia is an interactive control data type. It should be understood that the technical solutions of the embodiments of the present application can be implemented according to the contents of the data stream ID and the label in the above dcmap.

It should be understood that both the first data channel and the second data channel have data stream 1, and only transmit the video transmission data of the AR application, but these two data streams 1 are not one data stream, but are distributed in two data channels The two data streams of , only the data streams with the same data stream ID.

Similarly, at S14060, the data channel media server sends the second mapping table to the second user equipment.

Similarly, at S14070, the data channel media server sends the first mapping table and the second mapping table to the AR application control server.

S14080. The first user equipment starts the AR application according to the first mapping table, and monitors the corresponding data flow.

S14090. The second user equipment starts the AR application according to the second mapping table, and monitors the corresponding data flow.

S14100. After receiving the first mapping table and the second mapping table, the AR application control server creates a data routing table according to the application data type identifier, and records the transmission route of the application data between the user equipment and the data channel media server. In this embodiment The data routing table can be in the following form:

AR application. Video transmission data:

(first user equipment identification, data stream 1)

(Second user equipment identification, data flow 1)

AR application. Video echo data:

(first user equipment identification, data stream 2)

(Second User Equipment Identification, Data Flow 2)

AR application. Video transmission data:

(first user equipment identification, data flow 3)

(Second user equipment identification, data flow 3)

Business scenario 1:

As an example, take a business scenario in which the first user equipment needs to replace the background of the video call, and finally display the video transmission data after the background replacement to the first user equipment user and the second user equipment user respectively.

S14110 The AR application of the first user equipment generates first data.

The first data includes video transmission data, second indication information, and a target user equipment identifier. It should be understood that the second instruction information should be background material replacement information in this business scenario, which can instruct the AR application control server to process the video transmission data, that is, replace the background picture in the video transmission data with the background material picture. In this scenario, the target user equipment identity includes not only the first user equipment identity, but also the second user equipment identity.

Knowing that the data type of the first data is video transmission data, the first user equipment determines the application data type identifier: AR application.video transmission data, and then determines the data stream for transmitting the first data: data stream 1 .

S14120. The first user equipment sends the first data to the data channel media server through the data stream 1.

S14130. After receiving the first data of the data stream 1, the data channel media server determines the content corresponding to the label tag in the extended SDP protocol according to the ID of the data stream 1: AR application.Video transmission data. According to the server address sent by the AR application control server, the first data is transmitted to the AR application control server through the HTTP data channel.

S14140. After receiving the first data, the AR application control server performs corresponding data processing on the application data included in the first data according to the second indication information included in the first data, that is, replaces the background of the video call, and generates third data. .

In addition, the AR application control server determines the user equipment receiving the third data according to the target user equipment identifier included in the first data. In this embodiment, the target user equipment is the first user equipment and the second user equipment. These two aspects are explained:

For the first user equipment as the receiving end: the AR application control server determines that the above third data is an AR application that needs to be sent back to the first user equipment to realize the video background replacement effect of the first user interface of the first user equipment. Therefore, the data The type of is video echo data, and the corresponding application data type is identified as: AR application.Video echo data.

Through confirmation of the above information, the AR application control server can determine that the third data should be sent to the first user equipment through the data stream 2 of the first data channel according to the created data routing table.

For the second user equipment as the receiving end: the AR application control server determines that the above-mentioned third data needs to be sent to the AR application of the second user equipment, so that the second user equipment user interface displays the video with the user background replaced by the first user equipment Image, therefore, the data type is video transmission data, and the corresponding application data type is identified as: AR application.Video transmission data.

Through confirmation of the above information, the AR application control server can determine that the third data should be sent to the first user equipment through the data stream 1 of the second data channel according to the created data routing table.

S14150. After confirming the above routing information, the AR application control server generates third instruction information, which is used for Instruct the data channel media server to transmit the processed application data to the target user equipment through the specified data channel and data stream. Exemplarily, the third indication information may be in the following form:

AR application. Video echo data:

(first user equipment identification, data flow 2)

AR application. Video transmission data:

(Second user equipment identification, data flow 1)

After the above steps, the AR application control server combines the processed application data and the third instruction information into the second data, and sends the second data to the data channel media server through the HTTP data channel.

S14140. After receiving the second data, the data channel media server transmits the third data to the first user equipment through the data stream 2 of the first data channel according to the third indication information included in the second data;

S14150. The data channel media server transmits the third data to the second user equipment through the data stream 1 of the second data channel.

S14160. When the first user equipment monitors the application data sent by the data stream 2 of the first data channel, according to the data stream ID of the data stream 2, confirm that the corresponding application data type is identified as AR.echo, that is, the video echo of the AR application. display data. Therefore, the first user equipment sends the video echo data to the AR application of the first user equipment to receive and process it.

After the AR application of the first user equipment receives the video echo data, the first interface of the first user equipment displays a picture after replacing the video background.

S14170, the second user equipment listens to the application data sent by the data stream 1 of the second data channel, and confirms that the corresponding application data type is identified as AR.vedio according to the data stream ID of the data stream 1, that is, the video transmission of the AR application data. Therefore, the second user equipment sends the video transmission data to the AR application of the second user equipment to receive and process it.

After the AR application of the second user equipment receives the video transmission data, the second interface of the second user equipment displays a picture of the user equipment of the first user equipment after replacing the video background.

Business scenario 2:

As an example, take a business scenario where the first user equipment needs to initiate an interactive operation to the second user equipment, for example, a like operation.

It should be understood that the like operation is performed by the user of the first user device clicking the like button on the end of the AR application. After this operation, the AR application interface of the second user device will have a video effect of like. The expression form of the effect is not limited.

S14180. The AR application of the first user equipment generates first data, where the first data includes interaction control data, indication information, and a target user equipment identifier. It should be understood that the instruction information can instruct the AR application control server to generate a like interaction effect image. The target user equipment identifier is the second user equipment identifier in this scenario.

The AR application of the first user equipment knows that the data type of the first data is interaction control data, thereby determining the application data type identifier: AR application.interaction control data, and then determining the data flow for transmitting the first data: data flow 3 .

S14190. The AR application of the first user equipment sends the first data to the data channel media server through the data stream 3.

S14200. After the data channel media server receives the first data of the data stream 3, according to the ID number of the data stream 3, determine the content corresponding to the label tag in the extended SDP protocol: AR application. interactive control data. According to the server address sent by the AR application control server, the first data is transmitted to the AR application control server through the HTTP data channel.

S14210. After receiving the first data, the AR application control server, according to the second instruction included in the first data, According to the displayed information, it is determined that the application data needs to be processed accordingly, that is, the like interaction is realized, and the third data is generated.

In addition, the AR application control server determines the user equipment receiving the third data according to the target user equipment identifier included in the first data. In this embodiment, the target user equipment is the second user equipment.

The AR application control server determines that the third data needs to be sent to the second user equipment, and the data type of the third data is interaction control data, and the corresponding application data type identifier is: AR application.interaction control data.

Through confirmation of the above information, the AR application control server can determine that the third data should be sent to the second user equipment through the data stream 3 of the second data channel according to the created data routing table.

S14220. After confirming the routing information, the AR application control server generates third instruction information, which is used to instruct the data channel media server to transmit the second data to the target user equipment through the specified data channel and data stream. Exemplarily, the third indication information may be in the following form:

AR application. Interactive control data:

(Second user equipment identification, data stream 3)

S14230, after the above steps, the AR application control server combines the processed application data and the third instruction information into second data, and sends the second data to the data channel media server through the HTTP data channel.

S14240. After receiving the second data, the data channel media server transmits the third data included in the second data to the second user equipment through the data stream 3 of the second data channel according to the third indication information included in the second data.

S14250, when the second user equipment monitors the application data sent by the data stream 3 of the second data channel, according to the data stream ID of the data stream 3, confirm that the corresponding application data type is identified as AR.ia, that is, the interactive control of the AR application data. Therefore, the second user equipment allows the interaction control data to be received and processed by the AR application of the second user equipment.

After the AR application of the second user equipment receives the video transmission data, the application interface of the second user equipment displays the like interaction effect picture sent by the user of the first user equipment.

The data transmission method provided by the embodiment of the present application is described in detail above with reference to FIG. 1 to FIG. 14 , and the data transmission device provided by the embodiment of the present application is described in detail below in conjunction with FIG. 15 to FIG. 17 .

FIG. 15 shows a schematic block diagram of a data transmission device 1500 provided by an embodiment of the present application. The device 1500 may correspond to the first network device described in the above method, or may correspond to a chip or component of the first network device. Moreover, the device 1500 Each module or unit in the apparatus 1500 can be used to execute the actions or processing procedures performed by the first network device in the above method. As shown in FIG. 15 , the apparatus 1500 for data transmission during a call can include a receiving and sending unit 1510 and processing unit 1520.

The transceiving unit 1510 is configured to receive first indication information from the second network device. As an optional embodiment, the first indication information includes: at least one user equipment identifier and at least one application data type identifier.

Optionally, the first indication information may also include the server address of the second network device. After receiving the application data from the user equipment, the transceiver unit 1510 can send the application data to the second network device through the HTTP data channel according to the server address. Internet equipment.

Optionally, the application data type identifier may include a data type. In addition, the application data type identifier may also include a data type and an application name.

The processing unit 1520 is configured to establish a one-to-one mapping relationship between at least one data flow in the data channel and at least one application data type identifier according to the first indication information, where the data channel is a link between the first network device and the user equipment. The channel used to transfer application data.

The transceiving unit 1510 is further configured to: send mapping relationship information to the second network device and at least one user equipment, where the mapping relationship information indicates the mapping relationship.

Optionally, the transceiver unit 1510 is further configured to: receive first data from the user equipment through a data stream, where the first data includes application data and an identifier of at least one target user equipment, and the data stream is generated by the user equipment according to the mapping relationship information It is determined by the data type of the application data.

Optionally, the first data received by the transceiving unit 1510 further includes second indication information, where the second indication information is used to indicate the manner in which the second network device performs data processing on the application data.

Optionally, the transceiving unit 1510 is further configured to: send the above-mentioned first data to the second network device.

Optionally, the transceiving unit 1510 is further configured to: receive second data from the second network device, the second data includes third data and third indication information, where the third data is the application data generated by the second network device Generated after data processing, the third indication information is determined by the second network device according to the mapping relationship information and the data type of the third data, and the third indication information is used to instruct the transceiver unit to select the data stream for transmitting the third data

Optionally, the transceiving unit 1510 is further configured to: send the third data to the target user equipment through the data stream.

FIG. 16 shows a schematic block diagram of a data transmission device 1600 provided by an embodiment of the present application. The device 100 may correspond to the second network device described in the above method, or may correspond to a chip or component of the second network device. Each module or unit in the apparatus 1600 can be used to execute the actions or processing procedures performed by the second network device in the above method. As shown in FIG. 16, the apparatus 1600 for data transmission can include a determination unit 1610, a transceiver unit 1620 and processing unit 1630.

The determining unit 1610 is configured to determine first indication information according to a service scenario of the user equipment. As an optional embodiment, the first indication information includes: at least one user equipment identifier and at least one application data type identifier.

Optionally, the first indication information may also include the server address of the second network device. After the first network device receives the application data from the user equipment, according to the server address, the application data can be sent to the second network device through the HTTP data channel. 2. Network equipment.

The transceiver unit 1620 is configured to send first indication information to the first network device; and is also configured to receive mapping relationship information from the first network device, where the mapping relationship information indicates a relationship between at least one data stream and at least one application data type identifier A corresponding mapping relationship, the mapping relationship is used by the determination unit to determine the data flow for transmitting the application data.

Optionally, the transceiving unit 1620 is further configured to: receive first data from the first network device, where the first data includes application data and an identifier of at least one target user equipment.

Optionally, the first data received by the transceiving unit 1620 further includes second indication information.

The processing unit 1630 is configured to perform data processing on the application data according to the second instruction information to generate third data.

Optionally, the determining unit 1610 is further configured to: determine third indication information according to the above mapping relationship information and the data type of the third data, where the third indication information is used to instruct the first network device to select a data stream for transmitting the third data.

Optionally, the transceiving unit 1620 is further configured to: send second data to the first network device, where the second data includes third data and third indication information.

FIG. 17 shows a schematic block diagram of a data transmission device 1700 provided by an embodiment of the present application. The device 1700 may correspond to the user equipment described in the above method, or may correspond to a chip or component of the user equipment. Moreover, the device 1700 Each module or unit in the above method may be used to execute each action or processing performed by the user equipment. As shown in FIG. 17 , the apparatus 1700 for data transmission may include a communication unit 1710 .

The communication unit 1710 is configured to receive mapping relationship information from the first network device, where the mapping relationship information indicates at least one A one-to-one mapping relationship between data streams and at least one application data type identifier, wherein the application data type identifier is used to identify the data type, and the mapping relationship is used for the communication unit to determine the data stream for transmitting application data.

Optionally, the communication unit 1710 is further configured to: send first data to the first network device through a data stream, where the first data includes application data and an identifier of at least one target user equipment, and the data stream is generated by the communication unit according to the mapping relationship information It is determined by the data type of the application data.

Optionally, the first data sent by the communication unit 1710 further includes second indication information, where the second indication information is used to indicate the manner in which the second network device performs data processing on the application data.

Optionally, the communication unit 1710 is further configured to: receive third data from the first network device through a data stream, the data stream is determined by the first network device according to third indication information sent by the second network device, wherein, The third indication information is determined by the second network device according to the mapping relationship information and the data type of the third data.

Optionally, the application data type identifier is also used to identify the application name, and the communication unit 1710 is further configured to: when receiving application data from the data stream, determine the application data type identifier corresponding to the data stream according to the above mapping relationship information, and then determine the application data type identifier. Name, so the communication unit 1710 can determine the specific user equipment application that receives the application data, and hand over the application data to the user equipment application to receive and process.

The apparatus 1500 of each of the above schemes has the function of implementing the corresponding steps performed by the first network device in the above method; the apparatus 1600 of the above various schemes has the function of implementing the corresponding steps of the second network equipment in the above method; the apparatus 1700 of the above various schemes It has the function of realizing the corresponding steps executed by the user equipment in the above method; the function can be realized by hardware or software, and can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the transceiver unit can be replaced by a communication interface, and other units, such as a determination unit, can be replaced by a processor to perform the transceiver operations and related functions in each method embodiment. processing operations. In this embodiment of the present application, the communication interface of a device is used for the device to communicate with other devices. Exemplarily, the communication interface may be a transmitter, a receiver, a transceiver, a circuit, a bus, a module, a pin, or other types of communication interfaces, which are not limited in this embodiment of the present application.

In a specific implementation process, the processor may be used to perform, for example but not limited to, baseband-related processing, and the communication interface may be used to perform, for example but not limited to, information exchange. The above-mentioned devices may be respectively arranged on independent chips, or at least partly or all of them may be arranged on the same chip. For example, the processor can be further divided into an analog baseband processor and a digital baseband processor, wherein the analog baseband processor and the communication interface can be integrated on the same chip, and the digital baseband processor can be set on an independent chip. With the continuous development of integrated circuit technology, more and more devices can be integrated on the same chip. For example, a digital baseband processor can be combined with a variety of application processors (such as but not limited to graphics processors, multimedia processors, etc.) integrated on the same chip. Such a chip can be called a system on chip (SOC). Whether each device is independently arranged on different chips or integrated and arranged on one or more chips often depends on the specific needs of product design. The embodiments of the present application do not limit the specific implementation forms of the foregoing devices.

In addition, the present application also provides a communication system for data transmission, including one or more of the first network device, the second network device, and the user equipment in the embodiment of the present application.

In the embodiment of the present application, "first", "second" and various numbers are only for convenience of description, and are not used to limit the scope of the embodiment of the present application. For example, differentiating between different lines, vias, etc.

It should be understood that the term "and/or" in this article is only an association relationship describing associated objects, indicating that there may be three relationships, for example, A and/or B may mean: A exists alone, and A and B exist at the same time , there are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

It should be understood that, in various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present application. The implementation process constitutes any limitation.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

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

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

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. should be covered. Within the protection scope of this application. Therefore, the protection scope of the present application should be determined by the protection scope of the claims.

Claims

A method for data transmission, characterized in that the method comprises:

The first network device receives first indication information from the second network device, where the first indication information includes at least one application data type identifier and at least one user equipment identifier, where the application data type identifier is used to identify a data type;

The first network device establishes a one-to-one mapping relationship between at least one data flow in the data channel and the at least one application data type identifier according to the first indication information, where the data channel is the first A channel for transmitting application data between network equipment and user equipment;

The first network device sends mapping relationship information to the second network device and the at least one user equipment, where the mapping relationship information indicates the mapping relationship.
The method according to claim 1, further comprising:

The first network device receives first data from the user equipment through a data stream, the first data includes the application data and at least one target user equipment identifier, and the data stream is generated by the user equipment according to The mapping relationship information and the data type of the application data are determined;

The first network device sends the first data to the second network device.
The method according to claim 2, wherein the first indication information further includes a server address of the second network device;

The first network device sends the first data to the second network device through a hypertext transfer protocol HTTP data channel according to the server address.
The method according to claim 2 or 3, wherein the first data further includes second instruction information, and the second instruction information is used to instruct the second network device to perform data processing on the application data The way.
The method according to any one of claims 1 to 4, wherein the method further comprises:

The first network device receives second data from the second network device, the second data includes third data and third indication information, and the third data is provided by the second network device to the The application data is generated after data processing, and the third indication information is determined by the second network device according to the mapping relationship information and the data type of the third data.
The method according to claim 5, wherein the method further comprises:

determining, by the first network device, the data flow for transmitting the third data according to the third indication information;

The first network device sends the third data to the at least one target user equipment through the data stream.
The method according to any one of claims 1 to 6, wherein the application data type identifier is also used to identify an application name, and the application name is used to instruct the user equipment to determine to receive from the data stream A user equipment application of the third data.
The method according to any one of claims 1 to 7, wherein the data channel is created by the first network device according to an instruction of the second network device.
A method for data transmission, characterized in that the method comprises:

The second network device determines first indication information according to a service scenario of the user equipment, where the first indication information includes at least one application data type identifier and at least one user equipment identifier, where the application data type identifier is used to identify a data type;

The second network device sends the first indication information to the first network device;

The second network device receives mapping relationship information from the first network device, where the mapping relationship information indicates a one-to-one mapping relationship between at least one data flow and the at least one application data type identifier;

The second network device determines a data flow for transmitting application data from the at least one data flow based on the mapping relationship information.
The method according to claim 9, characterized in that the method further comprises:

The second network device receives first data from the first network device, the first data including the application data and an identification of at least one target user equipment.
The method according to claim 10, wherein the second network device receiving the first data from the first network device comprises:

The first indication information also includes a server address of the second network device;

The second network device receives the first data sent by the first network device through an HTTP data channel according to the server address.
The method according to claim 10 or 11, wherein the first data further includes second instruction information, and the second instruction information is used to instruct the second network device to perform data processing on the application data The way.
The method according to any one of claims 9 to 12, further comprising:

The second network device sends second data to the first network device, the second data includes third data and third indication information, and the third data is provided by the second network device to the application The data is generated after data processing, the third indication information is determined by the second network device according to the mapping relationship information and the data type of the third data, and the third indication information is used for Instructing the first network device to select the data flow for transmitting the third data.
The method according to any one of claims 9 to 13, wherein the application data type identifier is also used to identify an application name, and the application name is used to instruct the user equipment to determine to receive a third data for user device applications.
A method for data transmission, characterized in that the method comprises:

The user equipment receives mapping relationship information from the first network device, where the mapping relationship information indicates a one-to-one mapping relationship between at least one data flow and at least one application data type identifier, where the application data type identifier is used to identify the data type ;

The user equipment determines a data flow for transmitting application data from the at least one data flow based on the mapping relationship information.
The method according to claim 15, further comprising:

The user equipment sends first data to the first network device through the data flow, the first data includes the application data and at least one target user equipment identifier, and the data flow is generated by the user equipment according to The mapping relationship information and the data type of the application data are determined.
The method according to claim 16, wherein the first data further includes second indication information, and the second indication information is used to instruct the second network device to perform data processing on the application data .
The method according to any one of claims 15 to 17, further comprising:

receiving, by the user equipment, third data from the first network device through the data stream, where the data stream is determined by the first network device according to third indication information sent by the second network device, The third indication information is determined by the second network device according to the mapping relationship information and the data type of the third data.
The method according to any one of claims 15 to 18, wherein the application data type label The identification is further used to identify an application name, and the application name is used to indicate that the user equipment determines to receive the third data from the data stream.
A method for data transmission, characterized in that the method comprises:

The second network device determines the first indication information according to the service scenario of the user equipment, where the first indication information includes at least one application data type identifier and at least one user equipment identifier, wherein the application data type identifier is used to identify the data type ;

The second network device sends the first indication information to the first network device;

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

The first network device establishes a one-to-one mapping relationship between at least one data flow in the data channel and the at least one application data type identifier according to the first indication information, where the data channel is the first A channel for transmitting application data between a network device and the user equipment;

The first network device sends mapping relationship information to the second network device and the at least one user equipment, where the mapping relationship information indicates the mapping relationship;

The second network device and the user equipment receive mapping relationship information from the first network device;

The user equipment determines a data flow for transmitting application data from the at least one data flow based on the mapping relationship information.
The method according to claim 20, further comprising:

The user equipment sends first data to the first network device through the data flow, the first data includes the application data and at least one target user equipment identifier, and the data flow is generated by the user equipment according to The mapping relationship information and the data type of the application data are determined;

The first network device receives the first data through the data stream;

sending the first data to the second network device by the first network device;

The second network device receives first data from the first network device.
The method according to claim 21, wherein the second network device receiving the first data from the first network device comprises:

The first indication information also includes a server address of the second network device;

The second network device receives the first data sent by the first network device through an HTTP data channel according to the server address.
The method according to claim 21 or 22, wherein the first data further includes second instruction information, and the second instruction information is used to instruct the second network device to perform data processing on the application data The way.
The method according to any one of claims 20 to 23, further comprising:

The second network device sends second data to the first network device, the second data includes third data and third indication information, and the third data is provided by the second network device to the application The data is generated after data processing, the third indication information is determined by the second network device according to the mapping relationship information and the data type of the third data, and the third indication information is used for instructing the first network device to select the data flow for transmitting the third data;

The first network device receives the second data.
The method according to claim 24, further comprising:

determining, by the first network device, the data flow for transmitting the third data according to the third indication information;

sending, by the first network device, the third data to the at least one target user equipment through the data stream;

The at least one target user equipment receives the third data.
The method according to any one of claims 20 to 25, wherein the application data type identifier is also used to identify an application name, and the application name is used to instruct the user equipment to determine to receive from the data stream A user equipment application of the third data.
The method according to any one of claims 20 to 26, wherein the data channel is created by the first network device according to an instruction of the second network device.
A network device, characterized in that it includes:

A transceiver unit, configured to receive first indication information from the second network device; the first indication information includes at least one application data type identifier and at least one user equipment identifier, where the application data type identifier is used to identify the data type;

A processing unit, configured to establish a one-to-one mapping relationship between at least one data flow in a data channel and the at least one application data type identifier according to the first indication information, where the data channel is the first The channel used to transmit application data between network equipment and user equipment;

The transceiving unit is further configured to send mapping relationship information to the second network device and the at least one user equipment, where the mapping relationship information indicates the mapping relationship.
The network device according to claim 28, wherein the transceiver unit is also used for:

Receive first data from the user equipment through a data stream, where the first data includes the application data and at least one target user equipment identifier, and the data stream is generated by the user equipment according to the mapping relationship information and The data type of the application data is determined;

The transceiving unit is further configured to send the first data to the second network device.
The network device according to claim 29, wherein the first indication information further includes a server address of the second network device;

The transceiving unit is further configured to send the first data to the second network device through an HTTP data channel according to the server address.
The network device according to claim 29 or 30, wherein the first data further includes second indication information, and the second indication information is used to instruct the second network device to perform data processing on the application data. The way it is handled.
The network device according to any one of claims 28 to 31, wherein the transceiver unit is further configured to:

receiving second data from the second network device, the second data includes third data and third indication information, and the third data is processed by the second network device on the application data generated, the third indication information is determined by the second network device according to the mapping relationship information and the data type of the third data.
The network device according to claim 32, wherein the transceiver unit is also used for:

Sending the third data to the at least one target user equipment through the data flow, where the data flow is determined by the first network device according to the third indication information.
The network device according to any one of claims 28 to 33, wherein the application data type identifier is also used to identify an application name, and the application name is used to instruct the user equipment to determine from the data stream A user equipment application receiving the third data.
The network device according to any one of claims 28 to 34, wherein the processing unit further Used for:

Create the data channel according to an instruction of the second network device.
A network device, characterized in that it includes:

A determining unit, configured to determine first indication information according to a service scenario of the user equipment, where the first indication information includes at least one application data type identifier and at least one user equipment identifier, wherein the application data type identifier is used to identify data type;

A transceiver unit, configured to send the first indication information to the first network device; and to receive mapping relationship information from the first network device, the mapping relationship information indicating at least one data flow and the at least one application data type A one-to-one mapping relationship between identifiers, the mapping relationship is used by the determination unit to determine the data flow for transmitting application data;

The determining unit is further configured to determine a data flow for transmitting application data from the at least one data flow based on the mapping relationship information.
The network device according to claim 36, wherein the transceiver unit is further configured to receive first data from the first network device, the first data including the application data and at least one target user equipment logo.
The network device according to claim 37, wherein the first indication information further includes a server address of the device;

The transceiving unit is further configured to receive the first data sent by the first network device through an HTTP data channel according to the server address.
The network device according to claim 37 or 38, wherein the first data further includes second indication information, and the second indication information is used to instruct the device to process the application data. .
The network device according to any one of claims 36 to 39, comprising:

A processing unit, configured to perform data processing on the application data according to the second instruction information to generate third data.
The network device according to any one of claims 36 to 40, wherein the determining unit is further configured to determine third indication information according to the mapping relationship information and the data type of the third data, the The third indication information is used to instruct the first network device to select the data stream for transmitting the third data.
The network device according to any one of claims 36 to 41, wherein the transceiver unit is further configured to send second data to the first network device, and the second data includes the third data and the first 3. Instructions.
The network device according to any one of claims 36 to 42, wherein the application data type identifier is also used to identify an application name, and the application name is used to instruct the user equipment to determine to receive the first Three data user equipment applications.
A user equipment, characterized by comprising:

A communication unit, configured to receive mapping relationship information from the first network device, where the mapping relationship information indicates a one-to-one mapping relationship between at least one data flow and at least one application data type identifier, wherein the application data type identifier Used to identify data types;

The communication unit is further configured to determine a data flow for transmitting application data from the at least one data flow based on the mapping relationship information.
The user equipment according to claim 44, wherein the communication unit is further configured to send first data to the first network device through the data flow, and the first data includes the application data and at least one An identifier of the target user equipment, the data stream is generated by the communication unit according to the mapping relationship information and the application data The data type is determined.
The user equipment according to claim 45, wherein the first data further includes second indication information, and the second indication information is used to instruct the second network equipment to perform data processing on the application data. Way.
The user equipment according to any one of claims 44 to 46, wherein the communication unit is further configured to receive third data from the first network device through the data stream, the data stream being determined by the first network device according to the third indication information sent by the second network device, where the third indication information is determined by the second network device according to the mapping relationship information and the third data The data type is determined.
The user equipment according to any one of claims 44 to 47, wherein the application data type identifier is also used to identify an application name, and the application name is used to instruct the communication unit to determine the A user equipment application receiving the third data.
A device for data transmission, characterized in that it is used to implement the method according to any one of claims 1 to 8, or used to implement the method according to any one of claims 9 to 14, or , for implementing the method as described in any one of claims 15-19.
A device for data transmission, characterized in that it includes a processor, the processor is coupled to a memory, the memory is used to store computer programs or instructions, and the processor is used to execute the computer programs or instructions in the memory, causing the method described in any one of claims 1 to 8 to be performed, or causing the method described in any one of claims 9 to 14 to be performed, or causing the method described in any one of claims 15 to 19 to be performed method is executed.
A computer-readable storage medium, characterized in that computer programs or instructions are stored, and the computer programs or instructions are used to implement the method described in any one of claims 1 to 8, or, in claims 9 to 14 The method of any one, or, the method of any one of claims 15-19.
A computer program product, characterized in that the computer program product includes a computer program or instruction, and when the computer program or instruction is executed by a computer, the device executes the method described in any one of claims 1 to 8, or , the method of any one of claims 9 to 14, or, the method of any one of claims 15 to 19.
A communication system for data transmission, characterized in that it includes:

A first network device, configured to perform the method according to any one of claims 1 to 8;

A second network device, configured to perform the method according to any one of claims 9 to 14;

A user equipment, configured to execute the method according to any one of claims 15-19.