CN116669132A

CN116669132A - Data transmission method, network equipment and user equipment

Info

Publication number: CN116669132A
Application number: CN202210149086.9A
Authority: CN
Inventors: 丁开朝; 严宝亮; 郝红霞
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2023-08-29
Also published as: WO2023155739A1

Abstract

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

Description

Data transmission method, network equipment and user equipment

Technical Field

The present application relates to the field of communications, and in particular, to a method for transmitting data, a network device, and a user device.

Background

The real-time interactive channel technology of the data channel of the 5G network IP multimedia system (IP multimedia subsystem, IMS) supports the communication parties to simultaneously establish a plurality of data streams which are not interfered with each other to transmit a plurality of different types of data under the data channel under the scenes of voice communication, video communication and the like through a stream control transmission protocol (stream control transmission protocol, SCTP) transmission protocol, namely, one data stream only transmits one type of data, so that the communication parties can interact on the basis of the scenes of voice communication, video communication and the like. The existing user equipment traverses the data streams, determines that the data streams with specified data types can be transmitted to perform a data transmission process, and the process that the server performs route negotiation among a plurality of data streams is low in efficiency. Therefore, how to improve the efficiency of data transmission through the data stream is a problem to be solved in the present stage.

Disclosure of Invention

The application provides the data transmission, the network equipment and the user equipment, which simplify the process of route negotiation between a plurality of data streams by the second network equipment, improve the route matching efficiency of the second network equipment and further improve 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 the application data through the data stream is further improved.

In a first aspect, a method of data transmission is provided, the method comprising: the first network device receives first indication information from the second network device; the first indication information comprises at least one application data type identifier and at least one user equipment identifier, wherein the application data type identifier is used for identifying a data type; the method comprises the steps that a first network device establishes a one-to-one correspondence mapping relation between at least one data flow and at least one application data type identifier in a data channel according to first indication information, wherein the data channel is a channel used for transmitting application data between the first network device and user equipment; the first network device sends mapping relation information to the second network device and at least one user device, wherein the mapping relation information indicates the mapping relation.

The first indication information is determined by the second network device according to a service scenario of the user device, specifically, the second network device can determine all data types involved in the service scenario by the user device and identification information of all user devices in the service scenario according to the service scenario.

The service scenario may be a service initiated by the user equipment, or may be a service actively initiated by the second network equipment.

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

Based on the technical scheme, the first network device sends the mapping relation information to the second network device and the user device, so that when the second network device distributes the application data in a routing way, the data route of the application data can be determined according to the mapping relation information and the data type of the application data, namely, the data stream for transmitting the application data is determined, the process of route negotiation between a plurality of data streams by the second network device is simplified, the route matching efficiency of the second network device is improved, and the efficiency of transmitting the application data through the data stream is further improved. And the user equipment can avoid traversing the data stream when transmitting the application data, so that the efficiency of transmitting the application data through the data stream is further improved.

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

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

With reference to the first aspect, in certain implementations of the first aspect, 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 via a hypertext transfer protocol (hyper text transfer protocol, HTTP) data channel according to the server address.

With reference to the first aspect, in certain 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 indicated by the second indication information may be processed in such a manner that no application data is processed, i.e. the application data only needs to be transmitted transparently.

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

With reference to the first aspect, in some implementations 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, the third data is generated after the second network device performs data processing on application data, and the third indication information is determined by the second network device according to the mapping relationship information and a data type of the third data.

When the second network device performs route distribution on the application data according to the mapping relation, specifically, according to the data type of the application data and the identifier of the target user device, a unique data stream capable of transmitting the application data can be determined, and then third indication information is generated.

With reference to the first aspect, in certain implementation manners of the first aspect, the first network device determines a data stream for transmitting the third data according to the third indication information; the first network device transmits the third data to at least one target user device through the data stream.

Based on the technical scheme, when the second network device distributes the application data in a routing manner, the data route of the application data can be determined according to the mapping relation information and the data type of the application data, namely, the data stream for transmitting the application data is determined, so that the process of the second network device for carrying out route negotiation among a plurality of data streams is simplified, the route matching efficiency of the second network device is improved, and the efficiency of transmitting the application data through the data stream is further improved.

With reference to the first aspect, in certain implementations of the first aspect, the application data type identification is further used to identify an application name, the application name being used by the user equipment to determine a user equipment application that receives third data from the data stream.

For example, when the user equipment receives application data from the data stream, the application data type identifier corresponding to the data stream can be determined according to the mapping relation information, and since the application data type identifier is also used for identifying an application name, the user equipment can determine a specific user equipment application for receiving the application data.

Based on the technical scheme, when the user equipment receives the application data from the data stream, the specific user equipment application receiving the application data can be determined without analyzing the application data, so that the efficiency of transmitting the application data through the data stream is further improved. In addition, when multiple applications of the user equipment simultaneously send application data with the same data type, the situation that one data stream needs to simultaneously transmit the application data with the same data type of the multiple applications to cause data stream blocking can be avoided, and therefore the efficiency of transmitting the application data through the data stream is improved.

With reference to the first aspect, in certain implementations of the first aspect, a data channel is created by the first network device according to an indication of the second network device.

The data channel may be created by the first network device according to the first indication information, or may be created by other indication manners from the second network device.

In a second aspect, there is provided a method of data transmission, the method comprising: the second network equipment determines first indication information according to a service scene of the user equipment, wherein the first indication information comprises at least one application data type identifier and at least one user equipment identifier, and the application data type identifier is used for identifying a data type; the second network device sends first indication information to the first network device; the second network equipment receives mapping relation information from the first network equipment, wherein the mapping relation information indicates a mapping relation of one-to-one correspondence between at least one data stream and at least one application data type identifier; the second network device determines a data stream for transmitting application data from the at least one data stream 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 device.

For example, when the second network device performs route distribution on the application data, according to the mapping relation information and the data type of the application data, a data stream of the application data capable of transmitting the data type can be determined.

With reference to the second aspect, in certain implementations of the second aspect, the second network device receives first data from the first network device, the first data including application data and an identification of the at least one target user device.

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

With reference to the second aspect, in some implementations of the second 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 second aspect, in some implementations of the second aspect, the second network device sends second data to the first network device, where the second data includes third data and third indication information, the third data is generated after the second network device performs data processing on the application data, the third indication information is determined by the second network device according to the mapping relationship information and a data type of the third data, and 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 certain implementations of the second aspect, the application data type identification is further used to identify an application name, the application name being used by the user equipment to determine a user equipment application that receives third data from the data stream.

In a third aspect, a method of data transmission is provided, the method comprising: the user equipment receives mapping relation information from first network equipment, wherein the mapping relation information indicates a one-to-one mapping relation between at least one data stream and at least one application data type identifier, and the application data type identifier is used for identifying a data type; the user equipment determines a data stream for transmitting application data from the at least one data stream based on the mapping relation information.

For example, when the user equipment transmits application data to the first network equipment, the user equipment only needs to determine the data type of the application data again, because the mapping relation information is known, so that the data stream for transmitting the application data can be determined.

With reference to the third aspect, in certain implementations of the third aspect, the user equipment sends the first data including the application data and the identity of the at least one target user equipment through a data flow determined by the user equipment according to the mapping relation information and the data type of the application data.

With reference to the third aspect, in some implementations of the third aspect, the first data further includes second indication information, where the second indication information is used to instruct the second network device to perform data processing on the application data.

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

With reference to the third aspect, in certain implementations of the third aspect, the application data type identification is further used to identify an application name, the application name being used by the user equipment to determine a user equipment application that receives third data from the data stream.

For example, when the user equipment receives application data from the data stream, the application data type identifier corresponding to the data stream can be determined according to the mapping relation information, and since the application data type identifier is also used for identifying an application name, the user equipment can determine a specific user equipment application for receiving the application data, and transmit the application data to the user equipment application for receiving and processing.

In a fourth aspect, there is provided a network device comprising:

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

The processing unit is used for establishing a one-to-one mapping relation between at least one data flow and at least one application data type identifier in a data channel according to the first indication information, wherein the data channel is a channel used for transmitting application data between the first network equipment and the user equipment;

in addition, the transceiver unit is further configured to send mapping relationship information to the second network device and at least one user device, where the mapping relationship information indicates the mapping relationship.

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

With reference to the fourth aspect, in some implementations 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, and the data stream is determined by the user equipment according to mapping relationship information and a 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 a server address of the second network device; the transceiver unit is further configured to send the first data to the second network device through the HTTP data channel according to the server address.

With reference to the fourth aspect, in some implementations 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, the third data is generated after the second network device performs data processing on the application data, and the third indication information is determined by the second network device according to the mapping relationship information and a data type of the third data.

Based on the technical scheme, the process of route negotiation among a plurality of data streams by the second network equipment is simplified, the process of traversing the data streams when the second network equipment distributes the application data in a route is avoided, the route matching efficiency of the second network equipment is improved, and the efficiency of transmitting the application data through the data streams is further improved.

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

With reference to the fourth aspect, in certain implementations of the fourth aspect, the application data type identification is further used to identify an application name, the application name being used by the user equipment to determine a user equipment application that receives the third data from the data stream.

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

The data channel may be created by the processing unit according to the first indication information, or may be created by other indication methods from the second network device.

In a fifth aspect, there is provided a network device comprising:

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

the receiving and transmitting unit is used for transmitting the first indication information to the first network equipment; the mapping relation information is used for receiving mapping relation information from the first network equipment, and the mapping relation information indicates a one-to-one correspondence mapping relation between at least one data stream and at least one application data type identifier;

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

The first indication information is determined by the determining unit according to a service scenario of the user equipment, specifically, the determining unit can determine all data types related to the user equipment in the service scenario and identification information of all user equipment in the service scenario according to the service scenario.

The service scenario may be a service initiated by the ue, or may be a service actively initiated by the communication device.

For example, when the transceiver unit performs route distribution on the application data, according to the mapping relation information and the data type of the application data, a data stream of the application data capable of transmitting the data type can be determined.

Based on the technical scheme, when the receiving and transmitting unit distributes the route of the application data, the data route of the application data can be determined according to the mapping relation information and the data type of the application data, namely, the data stream for transmitting the application data is determined, the process of the receiving and transmitting unit for carrying out route negotiation among a plurality of data streams is simplified, the route matching efficiency of the receiving and transmitting unit is improved, and the efficiency of transmitting the application data through the data stream is further improved.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the transceiver unit is further configured to receive first data from the first network device, where the first data includes the application data and an identification of at least one target user device.

With reference to the fifth aspect, in certain implementation manners of the fifth aspect, the first indication information further includes a server address of the device; the receiving and transmitting unit is also used for receiving first data sent by the first network device through the HTTP data channel according to the server address.

With reference to the fifth aspect, in some implementations of the fifth aspect, the first data further includes second indication information, where the second indication information is used to instruct a device to perform a data processing on the application data.

With reference to the fifth aspect, in some implementations of the fifth aspect, the apparatus further includes a processing unit, configured to perform data processing on the application data according to the second instruction information, and generate third data.

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

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

The first network device may determine, for example, a data stream for transmitting the third data according to the third indication information, and send the third data to the target user device via the data stream.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the application data type identification is further used to identify an application name, the application name being used by the user equipment to determine a user equipment application that receives third data from the data stream.

In a sixth aspect, there is provided a user equipment comprising:

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

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

For example, when the communication unit transmits the application data to the first network device, the user device may select to designate a data stream to transmit the application data according to the data type of the application data because the mapping relationship information is known.

Based on the technical scheme, the process that the communication unit traverses the data stream when transmitting the application data is avoided, and the efficiency of transmitting the application data through the data stream is further improved.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the communication unit is further configured to send first data to the first network device via a data flow, where the first data includes application data and an identification of the at least one target user device, and the data flow is determined by the communication unit according to the mapping relation information and a data type of the application data.

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

With reference to the sixth aspect, in certain implementations of the sixth aspect, the application data type identification is further used to identify an application name for the user equipment application for which the communication unit determines to receive the third data from the data stream.

For example, when the communication unit receives application data from a data stream, the application data type identifier corresponding to the data stream may be determined according to the mapping relationship information, and since the application data type identifier is also used for identifying an application name, the communication unit can determine a specific user equipment application that receives the application data, and send the application data to the communication unit application for receiving and processing.

Based on the technical scheme, when the communication unit receives the application data from the data stream, the specific user equipment application receiving the application data can be determined without analyzing the application data, so that the efficiency of transmitting the application data through the data stream is further improved. In addition, when multiple applications of the communication unit send application data with the same data type at the same time, the situation that one data stream needs to transmit application data with the same data type of the multiple applications at the same time and the data stream is blocked can be avoided, so that the efficiency of transmitting application data through the data stream is improved.

In a seventh aspect, there is provided an apparatus for data transmission for implementing the method in any one of the possible implementations of the method design of the first aspect, or for implementing the method in any one of the possible implementations of the method design of the second aspect, or for implementing the method in any one of the possible implementations of the method design of the third aspect.

An eighth aspect provides an apparatus for data transmission, comprising a processor coupled to a memory for storing a computer program or instructions, the processor for executing the computer program or instructions in the memory to cause the method in any one of the possible implementations of the method design of the first aspect to be performed or to cause the method in any one of the possible implementations of the method design of the second aspect to be performed or to cause the method in any one of the possible implementations of the method design of the third aspect to be performed.

In a ninth aspect, a computer readable storage medium is provided, storing a computer program or instructions for implementing the method in any one of the possible implementations of the method design of the first aspect, or the method in any one of the possible implementations of the method design of the second aspect, or the method in any one of the possible implementations of the method design of the third aspect.

In a tenth aspect, there is provided a computer program product comprising a computer program or instructions which, when executed by a computer, cause an apparatus to perform the method of any one of the possible implementations of the method design of the first aspect, or the method of any one of the possible implementations of the method design of the second aspect, or the method of any one of the possible implementations of the method design of the third aspect.

In an eleventh aspect, there is provided a communication system for data transmission comprising one or more of the devices as referred to in the methods of the person aspects of the first to third aspects.

Drawings

Fig. 1 is a schematic diagram of a network architecture of a data transmission method according to an embodiment of the present application.

Fig. 2 is a schematic diagram of a method for creating a data channel by using a first network device and a user device according to 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 device according to an embodiment of the present application.

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

Fig. 5 is a further schematic diagram of a data channel created between a first network device and a user device according to an embodiment of the present application.

Fig. 6 is a schematic diagram of a data channel created by a first network device and a plurality of user devices respectively 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 flowchart of a user equipment according to an embodiment of the present application for transmitting application data through a data channel.

Fig. 9 is a schematic diagram of a user equipment receiving application data through a data channel according to an embodiment of the present application.

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

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 flowchart of data processing and route distribution of application data by the second network device according to the embodiment of the present application.

Fig. 13 is a flowchart of creating a data routing table by the second network device according to an embodiment of the present application.

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

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

Fig. 16 is a schematic block diagram of a data transmission apparatus 1600 provided in an embodiment of the present application.

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

Detailed Description

The technical scheme of the application will be described below with reference to the accompanying drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, such as: 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 telecommunication system, UMTS), fifth generation (5th generation,5G) mobile telecommunications system, or New Radio (NR), etc. The 5G mobile communication system may include a non-independent Networking (NSA) and/or an independent networking (SA), among others.

The technical scheme provided by the application can also be applied to future communication systems, such as a sixth generation mobile communication system. The communication system may also be a public land mobile network (public land mobile network, PLMN), a device-to-device (D2D) network, a machine-to-machine (machine to machine, M2M) network, an internet of things (internet of things, ioT) network, or other network. The IoT network may include, for example, an internet of vehicles. The communication modes in the internet of vehicles system are collectively called V2X (X represents anything), for example, the V2X communication includes: vehicle-to-vehicle (vehicle to vehicle, V2V), vehicle-to-roadside infrastructure (vehicle to infrastructure, V2I), vehicle-to-pedestrian communication (vehicle to pedestrian, V2P), or vehicle-to-network (vehicle to network, V2N), etc.

In addition, in the embodiment of the application, the user equipment can also be user equipment in an IoT system, and the IoT is an important component of the development of future information technology, and the main technical characteristics of the user equipment are that the article is connected with a network through a communication technology, so that the man-machine interconnection and the intelligent network of the article interconnection are realized. In the embodiment of the application, the IoT technology can achieve mass connection, deep coverage and terminal power saving through, for example, a narrowband NB technology.

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

In an embodiment of the present application, the user equipment or the network device includes a hardware layer, an operating system layer running above the hardware layer, and an application layer running above the operating system layer. The hardware layer includes hardware such as a central processing unit (central processing unit, CPU), a memory management unit (memory management unit, MMU), and a memory (also referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processes through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer comprises applications such as a browser, an address book, word processing software, instant messaging software and the like. Further, the embodiment of the present application is not particularly limited to the specific structure of the execution body of the method provided in the embodiment of the present application, as long as the communication can be performed by the method provided in the embodiment of the present application by running the program recorded with the code of the method provided in the embodiment of the present application, and for example, the execution body of the method provided in the embodiment of the present application may be a user device or a network device, or a functional module in the user device or the network device that can call the program and execute the program.

To facilitate an understanding of embodiments of the present application, terms and concepts related to embodiments of the present application are first explained.

1. Application data, which is data generated by a user equipment application, has a corresponding data type. It should be appreciated that after the user equipment application generates the application data, the data type of the application data can be determined. In addition, the application data may be sent by the user device to the network device, may be processed by the network device, or may be forwarded by the network device.

2. The SCTP protocol is a protocol that transmits multiple data streams simultaneously between two ends of a network connection. The SCTP protocol is capable of providing an association between a client and a server by which applications are provided with reliability, sequencing, flow control, and full duplex data transfer. One association refers to a communication between two systems. The SCTP protocol is message oriented, providing an in-order transport service of individual records, the length of each record written by the sender being transported with the data stream to the receiver application. The main feature of SCTP protocol is the transmission of multiple data streams. Based on SCTP protocol, application data is sent in different data streams, multiple data streams can exist from a sending end to a receiving end, the application data transmitted in the same data stream is ordered, and the application data transmitted between different data streams is unordered, so the data transmission between different data streams is relatively independent. Therefore, a blockage caused by a data transmission failure in one data stream does not affect data delivery of other data streams.

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

4. A data stream is a set of ordered, byte data sequences having a start point and an end point. One path of data flow is identified through the data flow ID based on SCTP, and the data transmission process of each data flow is independent.

5. The application control server is a network device of a server, and the existing application control server can be used for creating a data channel, processing application data from user equipment, and distributing the application data by a route.

6. The SDP protocol is mainly used for media negotiation between two session entities. It may use different transport protocols including session notification protocol (session announcement protocol, SAP), session initiation protocol (session initialization protocol, SIP), real-time streaming protocol (rapid spanning tree protocol, RTSP), email of multipurpose internet mail extension type (multipurpose internet mail extensions, MIME), and hypertext transfer protocol. The SDP protocol is mainly used for solving the problem of unequal capabilities among members participating in a session, and can be widely used in network environments and applications. The SDP protocol content comprises: session name and session purpose, connection information, bandwidth, time of session activation, media composition of the session, received information of the media (address, port, format, etc.), etc. The SDP protocol negotiates and utilizes two models of request and response, a main body corresponding to the request model is called a request party, a main body corresponding to the response model is called a response party, and the two entities are only logically distinguished and can be converted under certain conditions. The request sends a request message to the responder, the content of which includes the media stream type, the set of encodings used by each media stream, and the IP and port to be used for receiving the media stream. After receiving the request message, the responding party replies a response message to the requesting party, wherein the content of the response message comprises the media code to be used, whether the media stream is received or not, and the IP and the port for receiving the media stream are notified to the requesting party.

7. The HTTP protocol is an application layer protocol for distributed, collaborative, and hypermedia information systems. The HTTP protocol is the basis for data communication over the world wide web. The HTTP protocol is a standard for client-side and server-side requests and responses. Using a web browser, web crawler, or other tool, a client initiates an HTTP request to a designated port on the server (default port 80), in this scenario, the client is typically referred to as a user agent. The response server, which is often referred to as the origin server, stores resources such as HTML files and images. There may be multiple "middle layers" between the user agent and the origin server, such as proxy servers, gateways, or tunnels. In general, a client needs to request to acquire server resources or upload data such as files to a server through a designated access address, and the server communicates with the client through HTTP after receiving the request.

It should be understood that the data channel is also transmitted between the client terminal and the server terminal, but the data channel is created based on the HTTP protocol, and for convenience of description, the data channel created based on the HTTP protocol between the client terminal and the server terminal is collectively referred to as an HTTP data channel.

As described above, the SCTP protocol supports that, under the scenarios of voice call or video call, both parties of the call simultaneously establish a plurality of data streams with no interference with each other under the data channel to transmit a plurality of different types of data, i.e. one data stream transmits only one type of data.

However, after the existing calling and called user equipment establishes a call, the calling and called user equipment starts a terminal application, when the user equipment transmits application data to each other through data streams in a data channel based on an SCTP protocol, the user equipment cannot know the data type corresponding to the data streams, so that even if the user equipment knows the data type of the application data, the user equipment needs to traverse the data streams in the data channel to determine the data stream capable of transmitting the application data of the data type, and the data transmission efficiency of the method is lower; when the application control server distributes the application data in a routing way, because the application control server cannot acquire the data type corresponding to the data flow, even if the application control server knows the data type of the application data, the application control server needs to traverse the data flow in the data channel to determine a data route from the application control server to the user equipment, and the data transmission efficiency of the method is lower; in addition, after the user equipment receives the application data sent by the data stream, the application data needs to be analyzed to determine the specific user equipment application for receiving the application data, and the data transmission efficiency of the method is low.

In view of this, embodiments of the present application provide a method and an apparatus for data transmission, when a first network device creates a data channel, an application data type identifier is specified for each data stream, so as to establish a mapping relationship between the application data type identifier and a data stream in a one-to-one correspondence manner, where the application data type identifier is used to identify a data type, and the mapping relationship is used as a basis for a user device to select data stream transmission application data and a second network device to route distribution of the application data, thereby simplifying a process of data transmission of the user device and a process of route negotiation between multiple data streams by the second network device, and improving efficiency of transmitting the application data through the data stream.

To facilitate understanding of the embodiments of the present application, a network architecture of the embodiments of the present application will be described in detail with reference to fig. 1.

Fig. 1 is a schematic diagram of a network architecture suitable for a data transmission method according to an embodiment of the present application. The system comprises user equipment, first network equipment and second network equipment.

It should be appreciated that a user equipment may be referred to as a User Equipment (UE), a terminal, an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user device. The UE may also be a cellular telephone, a cordless telephone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a car-mounted device, a wearable device, a user device in a future 5G network or a user device in a future evolved public land mobile network (public land mobile network, PLMN), etc., as well as an end device, a logical entity, a smart device, a user device such as a cell phone, a smart terminal, etc. The system is required to support the function of establishing and maintaining the 5G IMS data channel, is provided with a multimedia application for establishing the data channel based on user equipment, and can provide various types of data such as audio, video, pictures, files, application interaction data and the like. For ease of understanding, in the embodiments of the present application that follow, description will be made using "user equipment" in a unified manner.

It should be understood that the first network device may be a data channel media server, and in this embodiment of the present application, the first network device is mainly configured to create a data channel between the first network device and the user device, and establish a one-to-one mapping relationship between application data type identifiers and data flows, and send, according to a routing indication of the second network device, application data processed by the second network device to the target user device through the specified data flow.

It should be understood that the second network device may be an application control server, and in this embodiment of the present application, the second network device is mainly configured to instruct the first network device to create a data channel, perform data processing on application data from the user device, and perform route distribution on 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, may also be applicable to a call scenario between a calling user equipment and a plurality of called user equipment, or may also be a service scenario in which a user equipment directly requests a server for a data resource, and the embodiment of the present application is not limited to a specific application scenario.

In one embodiment, the first network device and the second network device may be deployed in an operator's underlying network in which the first network device transmits application data and/or signaling data to the second network device via HTTP protocol, or receives processed application data and/or signaling data from the second network device.

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

It will be appreciated that prior to the first network device creating a data channel with the user device, the first network device receives first indication information from the second network device, the first indication information being determined by the second network device in dependence on a traffic scenario of the user device, the first indication information comprising at least one application data type identity and a user device identity.

And the first network equipment establishes a data channel with the appointed user equipment through the SDP according to the first indication information, and defines a label in the extended SDP as an application data type identifier.

It should be understood that in a data channel, at least one data stream is included, each data stream has a unique data stream ID, and one data stream ID corresponds to one application data type identifier, so that there is a one-to-one mapping relationship between the data stream IDs and the application data type identifiers, that is, there is a one-to-one mapping relationship between the data streams and the application data type identifiers.

Fig. 3 is a flowchart of a method for creating a data channel by using a first network device and a user device according to an embodiment of the present application.

S310, the first network device receives first indication information from the second network device, the first indication information comprising at least one application data type identifier and at least one user device identifier, the application data type identifier being used for identifying the data type.

It should be understood that the first indication information is determined by the second network device according to a service scenario of the user device, specifically, the second network device can obtain, through a signaling message of the user device in a service creation process, a user device identifier and all data types and user device identifiers related in the service scenario, and generate the first indication information.

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

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

It should be understood that, according to the first indication information, the first network device defines a label tag in the extended SDP protocol as an 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 by the first indication information, or may be created by other indication manners of the second indication information, which is not limited by the embodiment of the present application.

It should be understood that in a data channel, at least one data stream is included, each data stream has a unique data stream ID, and one data stream corresponds to one application data type identifier, so that there is a one-to-one mapping relationship between the data streams and the application data type identifiers, i.e. there is also a one-to-one mapping relationship between the data stream IDs and the application data type identifiers.

S330, the first network device sends mapping relation information to the second network device and at least one user device, wherein the mapping relation information indicates the mapping relation.

In one embodiment, when the first network device and the second network device belong to the base network of the operator, the first indication information may further include a server address of the second network device. The first network device sends the application data from the user device to the second network device based on the HTTP protocol according to the server address.

In one embodiment, the second network device may establish a data routing table according to the mapping relationship information, and when the application data is routed and distributed, the data routing table is compared with the data routing table to determine the data routing of the application data, so that a process of routing negotiation between a plurality of data flows by the second network device is simplified, and routing matching efficiency of the second network device is improved, and further efficiency of transmitting the application data through the data flows is improved. In addition, the process of traversing the data stream when the user equipment transmits the application data is avoided, and the efficiency of transmitting the application data through the data stream is further improved.

In one embodiment, the application data type identifier may further include an application name, and a format of the application data type identifier may be uniformly defined as: application name data type. Therefore, as can be seen from the above description, there may be a one-to-one mapping relationship among the data stream, the application name, and the data type.

In one embodiment, after receiving the mapping relationship information sent by the first network device, the second network device may create a data routing table containing the mapping relationship information, and perform route distribution on the application data according to the routing table.

The data routing table may be of the form:

application 1. Data type 1:

(user equipment 1, data stream 1)

(user equipment 2, data stream 1)

(user equipment 3, data stream 1)

Application 1. Data type 2:

(user equipment 1, data stream 2)

(user equipment 2, data stream 2)

(user equipment 3, data stream 2)

Therefore, when a plurality of applications of the user equipment simultaneously send application data of the same data type, the application data can be routed and distributed according to the routing table, so that the situation of data flow blocking caused when one data flow simultaneously transmits the application data of the same data type of a plurality of applications is avoided, the ordered transmission of the application data is ensured, and the efficiency of the application data transmission is improved.

In addition, the user equipment can start the appointed data stream in the data channel to monitor according to the application name in the application data type identifier, when the user equipment monitors the appointed data stream of the data channel to transmit the application data, the application data type identifier corresponding to the data stream can be determined according to the data stream ID without analyzing the application data, further, the user equipment application receiving the application data is determined, and the efficiency of the user equipment for processing the application data is improved.

It should be understood that, when the application data type identifier includes only data types, the above-described creation manner of the data routing table is equally 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 by a method other than the data routing table, which is not limited by the embodiment of the present application.

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

fig. 4 shows a schematic diagram of a data channel created between a first network device and a user device according to an embodiment of the present application. As can be seen from the example of fig. 4, the ue needs to use two applications in the present call: application 1 and application 2.

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

The application data type identifier corresponding to the 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 a further schematic diagram of a data channel created between a first network device and a user device according to an embodiment of the present application. As can be seen from the example of fig. 5, the ue needs to use two applications in the present call: application 1 and application 2.

Two data channels are created between the first network device and the user device: the data channel 1 and the data channel 2 each transmit application data generated by only one designated application, and a plurality of data streams are correspondingly distributed to transmit application data of different data types respectively.

It should be understood that, in a traffic scenario in which data interaction is performed between multiple user devices, as shown in the example of fig. 6, the scheme in which the first network device establishes data channels with the first user device and the second user device respectively generally takes a form of "back-to-back" creation, that is, the data stream IDs in the two data channels and the application data type identifiers corresponding to the data stream IDs are all the same.

Specifically, taking the example of the data stream 1 in which both the above two data channels exist, the data stream 1 in which both the data channel 1 and the data channel 2 exist, the two data streams 1 are only the same in data stream ID, and are essentially two data streams respectively belonging to different data channels.

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

The schematic drawing takes application data type identification as an example for identifying application names and data types.

The application 1 of the user equipment generates application data and the user equipment is able to determine the data type of the application data, i.e. data type 1. The user equipment determines a data stream (data stream 1) for transmitting the application data based on the application name (application 1) and the data type (data type 1) of the application data.

It should be appreciated that when the application data type identification is used only to identify the data type, the user equipment is still able to determine the data flow for transmitting the application data based on the application data type identification, which is not described in detail herein.

Fig. 8 shows a flowchart of a user equipment according to an embodiment of the present application for transmitting application data through a data channel.

S810, the application of the user equipment generates first data comprising application data and an identification of at least one target user equipment.

It should be understood that the above-mentioned user equipment is a user equipment as a transmitting end.

In one embodiment, the first data may further include second indication information, where the second indication information is used to indicate a manner of performing corresponding data processing on the application data after the second network device receives the application data.

It should be understood that the data processing may be performed without data processing, i.e. transparent transmission, and the data type of the application data after processing may be the original data type or a new data type.

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

It should be understood that the identifier of the at least one target ue may be used to indicate the ue serving as the receiving end, where the ue serving as the receiving end may be all ues except the ue serving as the transmitting end in a service scenario, or may be part of the ues except the ue serving as the transmitting end, or may be the ue serving as the transmitting end.

S820, the user equipment determines a data stream 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 equipment through the data stream.

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

Fig. 9 is a schematic diagram illustrating a user equipment receiving application data through a data channel according to an embodiment of the present application.

In one embodiment, when the application data type identification is used to identify an application name and a data type. As can be seen from the above description, the user equipment can start a corresponding application according to the application name and start listening to a corresponding data stream.

As can be seen from the example of fig. 9, the user equipment monitors that the application data is received from the data stream 3, the user equipment can determine the application name corresponding to the data stream, namely, the application 1, according to the data stream ID of the data stream 3 without analyzing the application data, so that the application data is directly handed to the application 1 for processing, and the efficiency of processing the application data by the user equipment is improved.

Fig. 10 shows a flowchart of a user equipment receiving application data through a data channel according to an embodiment of the present application.

It should be appreciated that the flow is applicable in the context of application data type identification for identifying application names and data types.

S1010, the user equipment receives application data through the data stream.

It should be appreciated that when the user equipment receives application data, a data stream transmitting the application data may be determined by a data stream listening method, and an ID of the data stream may be acquired.

S1020, the user equipment sends the application data to the appointed application for processing according to the application data type identifier corresponding to the data stream ID.

It should be understood that, before this, the first network device has established a one-to-one mapping relationship between the data stream IDs and the application data type identifiers, so that after determining the data stream IDs, the user device can determine the applications to which the data streams correspond.

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

In one embodiment, unlike the manner in which data is transmitted between the first network device and the user device through the data channel, the first network device and the second network device may be two network devices deployed in the basic network of the operator, and the two network devices interact data through the HTTP protocol. It should be understood that there is also one data channel between the first network device and the second network device, but the data channel may be established based on the HTTP protocol, and for convenience of description, the data channel is collectively referred to as an HTTP data channel in the embodiment of the present application.

In one embodiment, the second network device may send, to the first network device, first indication information through an HTTP data channel, where the information includes: the server address of the second network device, the user equipment identity and all data types involved in the traffic scenario. The server address of the second network device is used for enabling the first network device to send 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 enabling the first network device to send mapping relation information to the second network device through the HTTP data channel after the data channel is established, wherein the mapping relation information indicates a one-to-one mapping relation between at least one data stream and at least one application data type identifier.

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

S1210, the second network device receives first data, where the first data includes application data, second instruction information, and an identifier of at least one target user device, where the second instruction 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 a user equipment that is a 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 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 in the data processing process.

In one embodiment, the second network device may perform data processing on the first data in a manner that does not perform data processing, i.e., transparent transmission. The third data may be of the original data type or of a new data type.

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

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

target user equipment identity 1-data flow 1;

target user equipment identity 2-data stream 1;

s1240, the second network device transmits second data to the first network device, the second data including 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, the target user device that receives the third data and the designated data path that transmits the third data can be determined according to the third indication information, so that the third data can be sent to the target user device through the designated data stream.

The scheme of carrying out route distribution on the application data by the second network equipment avoids the process that the application control server traverses the data flow 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 mapping relationship information, a data routing table may be created according to the mapping relationship information, where the data routing table is used to record transmission routes of application data with different data types between the user device and the first network device, and the transmission route corresponding to the application data is determined through the data routing table.

It should be appreciated that the transmission route may be a specified data stream.

S1310, the second network device receives mapping relation information from the first network device, wherein the mapping relation information indicates a mapping relation of one-to-one correspondence between at least one data stream and at least one application data type identifier.

S1320, the second network device creates a data routing table according to the mapping relation information and the identification of at least one user device.

In particular, when the application data type identification is used to identify an application name and a data type, the data routing table may be in the following format:

application 1. Data type 1:

(user equipment 1, data stream 1)

(user equipment 2, data stream 1)

(user equipment 3, data stream 1)

Application 1. Data type 2:

(user equipment 1, data stream 2)

(user equipment 2, data stream 2)

(user equipment 3, data stream 2)

Application 1. Data type 3:

(user equipment 1, data stream 3)

(user equipment 2, data stream 3)

(user equipment 3, data stream 3)

In the following description, 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, a service scenario between user devices is specifically a video call scenario, and the user devices may use the AR application to perform interaction.

Fig. 14 shows a flow chart of data channel creation and data transmission provided by an 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 appreciated that in the first user device video interface, there are two pictures, one being the video picture of the first user device user as the first interface and the other being the video picture of the second user device user as the second interface. In the video interface of the second user equipment, two pictures are also existed, wherein one picture is the video picture of the user of the second user equipment and is used as a first interface, and the other picture is the video picture of the user of the first user equipment and is used as a second interface; the embodiment of the application does not limit the video interface.

After the AR application control server obtains the call event information, determining the identities of the user equipment of the two parties for establishing the call, and determining that the AR application in the service scene totally relates to the following three types of application data: video transmission data, video back display data and interaction control data.

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

A first user equipment identity (AR application. Video transmission data, AR application. Video playback data, AR application. Interaction control data), the AR application controlling the server address of the server;

a second user equipment identity (AR application. Video transmission data, AR application. Video playback data, AR application. Interaction control data), the AR application controlling the server address of the server;

s14020, the AR application control server sends the 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 information, the data channel media server establishes a first data channel with the first user equipment through an SDP protocol. When the data channel media server creates the data channel, the label 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 an application name and data type. Since the traffic scenario involves three types of application data, the first data channel comprises three data streams, in this embodiment simply referred to as: data stream 1, data stream 2, and data stream 3.

In this embodiment, the application data type identifier corresponding to the data stream1 is: AR application video transmission data;

the application data type identifier corresponding to data stream2 is: AR application video back display data;

the application data type identifier corresponding to the data stream3 is: AR application, interaction control data;

illustratively, the label tags in the extended SDP protocol dcmap are as follows:

video transport Stream1: a=dcmap 38754 max-time=150; label= "ar.vedio";

video playback data Stream2: a=dcmap 48754 max-time=150; label= "ar.echo";

interaction control data Stream3: a=dcmap 7216 max-retr=5; label= "ar.ia";

wherein dcmap is a first mapping table representing the correspondence between the attributes, and the number following the dcmap field is the data stream ID.

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

According to the dcmap, AR in the label is an AR application, vedio is a video transmission data type, echo is a video playback data type, and ia is an interactive control data type. It should be understood that the technical solution of the embodiment of the present application may be implemented according to the data stream ID and the content of the label in the dcmap.

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

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

Specifically, after the data channel media server determines the information, the data channel media server establishes a second data channel with the second user equipment through an SDP protocol. When creating the 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 embodied in the form of an application name and data type. Since the traffic scenario involves three types of application data, the second data channel also comprises three data streams, also referred to in this embodiment simply as: data stream1, data stream 2, and data stream 3.

the application data type identifier corresponding to data stream 2 is: AR application video back display data;

the application data type identifier corresponding to the data stream 3 is: AR application, interaction control data;

video transport Stream1: a=dcmap 38754 max-time=150; label= "ar.vedio";

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

interaction control data Stream3: a=dcmap 7216 max-retr=5; label= "ar.ia";

wherein dcmap is a second mapping table indicating correspondence between the attributes, and numbers after dcmap field are data stream IDs. According to the dcmap, AR in the label is an AR application, vedio is a video transmission data type, echo is a video playback data type, and ia is an interactive control data type. It should be understood that the technical solution of the embodiment of the present application may be implemented according to the data stream ID and the content of the label in the dcmap.

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

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

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

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

And 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, records the transmission route of the application data between the user equipment and the data channel media server, and the data routing table in this embodiment may be in the following form:

AR application video transmission data:

(first user equipment identification, data stream 1)

(second user equipment identification, data stream 1)

AR application video playback data:

(first user equipment identification, data stream 2)

(second user equipment identification, data stream 2)

AR application video transmission data:

(first user equipment identification, data stream 3)

(second user equipment identification, data stream 3)

Business scenario 1:

taking an example that the first user equipment needs to replace the background of the video call, and finally displaying the video transmission data after the background replacement to the service scenes of the first user equipment user and the second user equipment user respectively.

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

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

The first user equipment knows that the data type of the first data is video transmission data, thereby determining an application data type identifier: video transmission data, and further determining a data stream for transmitting the first data: data stream 1.

S14120, the first user device 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, according to the ID of the data stream 1, the content of the corresponding label tag in the extended SDP protocol: AR application video transmission data. And transmitting the first data to the AR application control server through an HTTP data channel according to the server address sent by the AR application control server.

S14140, after the AR application control server receives the first data, corresponding data processing is carried out on the application data included in the first data according to the second indication information included in the first data, namely, the video call background is replaced, and third data is generated.

In addition, the AR application control server determines, according to the target user equipment identifier included in the first data, the user equipment that receives the third data, in this embodiment, the target user equipment is the first user equipment and the second user equipment, and these two aspects will be described below:

for the first user equipment, the receiving end is as follows: the AR application control server determines that the third data is the AR application which needs to be transmitted back to the first user equipment, and realizes the video background replacement effect of the first interface of the first user equipment user, therefore, the data is of the type of video back display data, and the corresponding application data type is identified as follows: AR application video playback data.

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

For the second user equipment, the receiving end is: the AR application control server determines that the third data needs to be sent to the AR application of the second user equipment, and displays the video image after the user background of the first user equipment is replaced in the second interface of the user of the second user equipment, so that the data is of the type of video transmission data, and the corresponding application data type identifier is as follows: AR application video transmission data.

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

S14150, after confirming the above-mentioned route information, the AR application control server generates third indication information, which is used to instruct the data channel media server to transmit the processed application data to the target user equipment through the designated data channel and data stream. The third indication information may be in the form of:

AR application video playback data:

(first user equipment identification, data stream 2)

AR application video transmission data:

(second user equipment identification, data stream 1)

After the steps, the AR application control server combines the processed application data and the third indication information into 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 third data to the first user equipment through the data stream 2 of the first data channel according to 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 that the data stream 2 of the first data channel transmits application data, according to the data stream ID of the data stream 2, the corresponding application data type identifier is confirmed to be AR.echo, namely video echo data of AR application. Thus, the first user device receives and processes the video echo data to the AR application of the first user device.

And after the AR application of the first user equipment receives the video back display data, displaying a picture with the replaced video background on a first interface of the first user equipment.

S14170, the second user equipment monitors that the data stream 1 of the second data channel sends application data, and confirms that the corresponding application data type identifier is AR.vedio, namely video transmission data of the AR application, according to the data stream ID of the data stream 1. Thus, the second user device communicates the video transmission data to the AR application of the second user device for receipt and processing.

And after the AR application of the second user equipment receives the video transmission data, displaying a picture after the video background of the user of the first user equipment is replaced on a second interface of the second user equipment.

Business scenario 2:

by way of example, taking a service scenario in which a first user device needs to initiate an interactive operation to a second user device as an example, a praise operation.

It should be understood that the praise operation is performed by clicking the praise function button of the AR application terminal by the user of the first user equipment, and after this operation, the praise video effect will appear on the AR application interface of the second user equipment, which is not limited in the expression form of the praise effect in this embodiment.

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 indication information can instruct the AR application control server to generate a praise interaction effect image. The target user equipment identity is in this scenario the second user equipment identity.

The AR application of the first user equipment knows that the data type of the first data is interactive control data, thereby determining an application data type identifier: the AR application interacts the control data to determine a data stream for transmitting the first data: data stream 3.

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

S14200, after receiving the first data of the data stream 3, the data channel media server determines the content of the corresponding label tag in the extended SDP according to the ID number of the data stream 3: AR application. And transmitting the first data to the AR application control server through an HTTP data channel according to the server address sent by the AR application control server.

S14210, after receiving the first data, the AR application control server determines that corresponding processing needs to be performed on the application data according to the second instruction information included in the first data, that is, realizes praise interaction, and generates third data.

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

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

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

S14220, after confirming the above routing information, the AR application control server generates third indication information, which is used to instruct the data channel media server to transmit the second data to the target user equipment through the designated data channel and data stream. The third indication information may be in the form of:

AR application interaction control data:

(second user equipment identification, data stream 3)

S14230, after the steps, the AR application control server combines the processed application data and the third indication 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 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 ue monitors that the data stream 3 of the second data channel is transmitted as application data, it confirms that the corresponding application data type identifier is ar.ia, that is, the interactive control data of the AR application, according to the data stream ID of the data stream 3. Thus, the second user device communicates the interaction control data to the AR application of the second user device for receipt and processing.

And after the AR application of the second user equipment receives the video transmission data, displaying a praise interaction effect picture sent by the user of the first user equipment on an application interface of the second user equipment.

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

Fig. 15 shows a schematic block diagram of a data transmission apparatus 1500 according to an embodiment of the present application, where the apparatus 1500 may correspond to a first network device described in the foregoing method, or may correspond to a chip or a component of the first network device, and each module or unit in the apparatus 1500 may be used to perform each action or process performed by the first network device in the foregoing method, respectively, as shown in fig. 15, and the apparatus 1500 for data transmission during a call may include a receiving unit 1510 and a processing unit 1520.

The transceiver 1510 is configured to receive first indication information from the second network device, where the first indication information includes: an identification of at least one user equipment and at least one application data type identification.

Optionally, the first indication information may further include a server address of the second network device, and the transceiver unit 1510 may send the application data to the second network device through the HTTP data channel according to the server address after receiving the application data from the user device.

Alternatively, the application data type identifier may include a data type, and furthermore, 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 channel between the first network device and the user device for transmitting application data.

The transceiver unit 1510 is further configured to: and sending mapping relation information to the second network equipment and at least one user equipment, wherein the mapping relation information indicates the mapping relation.

Optionally, the transceiver unit 1510 is further configured to: first data from the user equipment is received via a data stream comprising application data and an identification of at least one target user equipment, the data stream being determined by the user equipment based on the mapping relation information and the data type of the application data.

Optionally, the first data received by the transceiver 1510 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.

Optionally, the transceiver unit 1510 is further configured to: and transmitting the first data to the second network equipment.

Optionally, the transceiver unit 1510 is further configured to: receiving second data from the second network device, where the second data includes third data and third indication information, the third data is generated by the second network device after data processing of the application data, 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 a data stream for transmitting the third data

Optionally, the transceiver unit 1510 is further configured to: and transmitting the third data through the data stream to the target user equipment.

Fig. 16 shows a schematic block diagram of a data transmission apparatus 1600 according to an embodiment of the present application, where the apparatus 100 may correspond to the second network device described in the foregoing method, or may correspond to a chip or a component of the second network device, and each module or unit in the apparatus 1600 may be used to perform each action or process performed by the second network device in the foregoing method, respectively, as shown in fig. 16, and the apparatus 1600 for data transmission may include a determining unit 1610, a transceiver unit 1620, and a processing unit 1630.

A determining unit 1610, configured to determine, according to a service scenario of a user equipment, first indication information, as an optional embodiment, where the first indication information includes: an identification of at least one user equipment and at least one application data type identification.

Optionally, the first indication information may further include a server address of the second network device, and after receiving the application data from the user device, the first network device may send the application data to the second network device through the HTTP data channel according to the server address.

A transceiver 1620 configured to send the first indication information to the first network device; and the data stream transmission unit is used for receiving mapping relation information from the first network equipment, wherein the mapping relation information indicates a one-to-one mapping relation between at least one data stream and at least one application data type identifier, and the mapping relation is used for determining the data stream for transmitting the application data by the determination unit.

Optionally, the transceiver unit 1620 is further configured to: first data is received from a first network device, the first data comprising application data and an identification of at least one target user device.

Optionally, the first data received by the transceiver 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, and generate third data.

Optionally, the determining unit 1610 is further configured to: and determining third indication information according to the mapping relation information and the data type of the third data, wherein the third indication information is used for indicating the first network equipment to select the data stream for transmitting the third data.

Optionally, the transceiver unit 1620 is further configured to: and transmitting second data to the first network device, wherein the second data comprises third data and third indication information.

Fig. 17 shows a schematic block diagram of an apparatus 1700 for data transmission according to an embodiment of the present application, where the apparatus 1700 may correspond to a user device described in the above method, or may correspond to a chip or a component of the user device, and each module or unit in the apparatus 1700 may be used to perform each action or process performed by the user device in the above method, respectively, as shown in fig. 17, and the apparatus 1700 for data transmission may include a communication unit 1710.

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

Optionally, the communication unit 1710 is further configured to: and transmitting first data through a data stream to the first network device, wherein the first data comprises application data and at least one identification of the target user device, and the data stream is determined by the communication unit according to the mapping relation information and 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 a manner in which the second network device performs data processing on the application data.

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

Optionally, the application data type identifier is further used to identify an application name, and the communication unit 1710 is further used to: when receiving application data from a data stream, according to the mapping relationship information, determining an application data type identifier corresponding to the data stream, and further determining an application name, so that the communication unit 1710 can determine a specific user equipment application for receiving the application data, and send the application data to the user equipment application for receiving and processing.

The apparatus 1500 of each of the above embodiments has a function of implementing the corresponding steps performed by the first network device in the above method; the apparatus 1600 of each of the above embodiments has a function of implementing the corresponding step performed by the second network device in the above method; the apparatus 1700 of each of the above embodiments has a function of implementing the corresponding steps performed by the user equipment in the above method; the functions may be implemented by hardware or software, or may be implemented by hardware executing corresponding software. The hardware or software comprises one or more modules corresponding to the functions; for example, the transceiver unit may be replaced by a communication interface, and other units, such as a determining unit, may be replaced by a processor, to perform the transceiver operations and related processing operations in the respective method embodiments, respectively. In an embodiment of the application, the communication interface of an apparatus is used for the apparatus to communicate with other devices. By way of example, the communication interface may be a transmitter, receiver, transceiver, circuit, bus, module, pin, or other type of communication interface, and embodiments of the application are not limited.

In particular implementations, a processor may be used to perform, for example and without limitation, baseband related processing, and a communication interface may be used to perform, for example and without limitation, information interaction. The above devices may be provided on separate chips, or may be provided at least partially or entirely on the same chip. For example, the processor may be further divided into an analog baseband processor, which may be integrated on the same chip as the communication interface, and a digital baseband processor, which may be provided on a separate chip. With the continued development of integrated circuit technology, more and more devices may be integrated on the same chip, for example, a digital baseband processor may be integrated on the same chip with a variety of application processors (e.g., without limitation, graphics processors, multimedia processors, etc.). Such a chip may be referred to as a System On Chip (SOC). Whether the individual devices are independently disposed on different chips or integrally disposed on one or more chips is often dependent on the specific needs of the product design. The embodiment of the application does not limit the specific implementation form of the device.

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

In the embodiments of the present application, the "first", "second" and various numerical numbers are merely for convenience of description and are not intended to limit the scope of the embodiments of the present application. For example, different lines, through holes, etc.

It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

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

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

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are contemplated within the scope of the present application. Within the scope of the application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of data transmission, the method comprising:

the method comprises the steps that first indication information from second network equipment is received by first network equipment, wherein the first indication information comprises at least one application data type identifier and at least one user equipment identifier, and the application data type identifier is used for identifying a data type;

the first network device establishes a one-to-one mapping relation 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, wherein the data channel is a channel used for transmitting application data between the first network device and user equipment;

the first network device sends mapping relation information to the second network device and the at least one user device, wherein the mapping relation information indicates the mapping relation.

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

the first network device receives first data from the user device through a data stream, wherein the first data comprises the application data and at least one identifier of a target user device, and the data stream is determined by the user device according to the mapping relation information and the data type of the application data;

The first network device sends the first data to the second network device.

3. The method of claim 2, wherein the first indication information further comprises a server address of the second network device;

and the first network equipment sends the first data to the second network equipment through a hypertext transfer protocol (HTTP) data channel according to the server address.

4. A method according to claim 2 or 3, wherein the first data further comprises second indication information for indicating a manner in which the second network device performs data processing on the application data.

5. The method according to any one of claims 1 to 4, further comprising:

the first network device receives second data from the second network device, wherein the second data comprises third data and third indication information, the third data is generated after the second network device performs data processing on the application data, and the third indication information is determined by the second network device according to the mapping relation information and the data type of the third data.

6. The method of claim 5, wherein the method further comprises:

the first network device determines the data stream 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 device via the data stream.

7. The method according to any of claims 1 to 6, wherein the application data type identification is further used to identify an application name for instructing the user equipment to determine a user equipment application receiving third data from the data stream.

8. The method according to any of claims 1 to 7, wherein the data channel is created by the first network device according to an indication of the second network device.

9. A method of data transmission, the method comprising:

the second network equipment determines first indication information according to a service scene of the user equipment, wherein the first indication information comprises at least one application data type identifier and at least one user equipment identifier, and the application data type identifier is used for identifying a data type;

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

the second network device receives mapping relation information from the first network device, wherein the mapping relation information indicates a mapping relation of one-to-one correspondence between at least one data stream and at least one application data type identifier;

the second network device determines a data stream for transmitting application data from the at least one data stream based on the mapping relationship information.

10. The method according to claim 9, wherein the method further comprises:

the second network device receives first data from the first network device, the first data comprising the application data and an identification of at least one target user device.

11. The method of claim 10, wherein the second network device receiving the first data from the first network device comprises:

the first indication information further comprises 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.

12. The method according to claim 10 or 11, wherein the first data further comprises second indication information, the second indication information being used to indicate a manner in which the second network device performs data processing on the application data.

13. 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 comprises third data and third indication information, the third data is generated after the second network device processes the application data, the third indication information is determined by the second network device according to the mapping relation information and the data type of the third data, and the third indication information is used for indicating the first network device to select the data stream for transmitting the third data.

14. The method according to any of claims 9 to 13, wherein the application data type identification is further used to identify an application name for instructing a user equipment to determine a user equipment application receiving third data from the data stream.

15. A method of data transmission, the method comprising:

the user equipment receives mapping relation information from first network equipment, wherein the mapping relation information indicates a one-to-one mapping relation between at least one data stream and at least one application data type identifier, and the application data type identifier is used for identifying a data type;

the user equipment determines a data stream for transmitting application data from the at least one data stream based on the mapping relation information.

16. The method of claim 15, wherein the method further comprises:

the user equipment sends first data to the first network equipment through the data flow, wherein the first data comprises the application data and at least one identification of target user equipment, and the data flow is determined by the user equipment according to the mapping relation information and the data type of the application data.

17. The method of claim 16, wherein the first data further comprises second indication information, the second indication information indicating a manner in which the second network device performs data processing on the application data.

18. The method according to any one of claims 15 to 17, further comprising:

the user equipment receives third data from the first network equipment through the data flow, wherein the data flow is determined by the first network equipment according to third indication information sent by the second network equipment, and the third indication information is determined by the second network equipment according to the mapping relation information and the data type of the third data.

19. The method according to any of claims 15 to 18, wherein the application data type identification is further used to identify an application name for instructing the user equipment to determine a user equipment application receiving third data from the data stream.

20. A network device, comprising:

the receiving and transmitting unit is used for receiving first indication information from the second network equipment; the first indication information comprises at least one application data type identifier and at least one user equipment identifier, wherein the application data type identifier is used for identifying a data type;

the processing unit is used for establishing a one-to-one mapping relation 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, wherein the data channel is a channel used for transmitting application data between the first network equipment and the user equipment;

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

21. The network device of claim 20, wherein the transceiver unit is further configured to:

receiving first data from the user equipment through a data stream, wherein the first data comprises the application data and at least one identification of target user equipment, and the data stream is determined by the user equipment according to the mapping relation information and the data type of the application data;

the transceiver unit is further configured to send the first data to the second network device.

22. The network device of claim 21, wherein the first indication information further comprises a server address of the second network device;

the receiving and transmitting unit is further configured to send the first data to the second network device through an HTTP data channel according to the server address.

23. The network device according to claim 21 or 22, wherein the first data further comprises second indication information, the second indication information being used to indicate a manner in which the second network device performs data processing on the application data.

24. The network device according to any of claims 20 to 23, wherein the transceiver unit is further configured to:

and receiving second data from the second network device, wherein the second data comprises third data and third indication information, the third data is generated after the second network device performs data processing on the application data, and the third indication information is determined by the second network device according to the mapping relation information and the data type of the third data.

25. The network device of claim 24, wherein the transceiver unit is further configured to:

and transmitting the third data through the data flow to the at least one target user equipment, wherein the data flow is determined by the first network equipment according to the third indication information.

26. The network device of any of claims 20 to 25, wherein the application data type identification is further used to identify an application name, the application name being used to instruct the user device to determine a user device application that receives third data from the data stream.

27. The network device of any one of claims 20 to 26, wherein the processing unit is further configured to:

And creating the data channel according to the instruction of the second network equipment.

28. A network device, comprising:

the receiving and transmitting unit is used for transmitting the first indication information to the first network equipment; the mapping relation information is used for indicating a mapping relation of one-to-one correspondence between at least one data stream and at least one application data type identifier, and the mapping relation is used for determining the data stream for transmitting the application data by the determining unit;

29. The network device of claim 28, wherein the transceiver unit is further configured to receive first data from the first network device, the first data including the application data and an identification of at least one target user device.

30. The network device of claim 29, wherein the first indication information further comprises a server address of the apparatus;

the receiving and transmitting 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.

31. The network device according to claim 29 or 30, wherein the first data further comprises second indication information for indicating a manner in which the apparatus performs data processing on the application data.

32. The network device of any one of claims 28 to 31, comprising:

and the processing unit is used for carrying out data processing on the application data according to the second indication information to generate third data.

33. The network device according to any of the claims 28 to 32, wherein the determining unit is further configured to determine third indication information according to the mapping relation information and the data type of third data, the third indication information being configured to indicate the first network device to select the data flow for transmitting the third data.

34. The network device of any of claims 28 to 33, wherein the transceiver unit is further configured to send second data to the first network device, the second data including third data and third indication information.

35. The network device of any of claims 28 to 34, wherein the application data type identification is further used to identify an application name for instructing a user device to determine a user device application that receives third data from the data stream.

36. A user device, comprising:

37. The user device of claim 36, wherein the communication unit is further configured to send first data to the first network device via the data stream, the first data including the application data and an identification of at least one target user device, the data stream being determined by the communication unit based on the mapping information and the data type of the application data.

38. The user device of claim 37, wherein the first data further comprises second indication information, the second indication information being used to indicate a manner in which the second network device performs data processing on the application data.

39. The user equipment according to any of the claims 36 to 38, wherein the communication unit is further configured to receive third data from the first network device via the data stream, the data stream being determined by the first network device according to third indication information sent by the second network device, the third indication information being determined by the second network device according to the mapping information and the data type of the third data.

40. The user equipment according to any of claims 36 to 39, wherein the application data type identification is further used to identify an application name for instructing the communication unit to determine a user equipment application receiving third data from the data stream.

41. Apparatus for data transmission, characterized by being adapted to carry out the method according to any one of claims 1 to 8, or to carry out the method according to any one of claims 9 to 14, or to carry out the method according to any one of claims 15 to 19.

42. An apparatus for data transmission, comprising a processor coupled to a memory for storing a computer program or instructions for executing the computer program or instructions in the memory, causing the method of any one of claims 1 to 8 to be performed, or causing the method of any one of claims 9 to 14 to be performed, or causing the method of any one of claims 15 to 19 to be performed.

43. A computer readable storage medium, characterized in that a computer program or instructions for implementing the method of 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 is stored.

44. A computer program product comprising computer programs or instructions which, when executed by a computer, cause an apparatus to perform the method of 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.

45. A communication system for data transmission, comprising:

a first network device for performing the method of any of claims 1 to 8;

a second network device for performing the method of any of claims 9 to 14;

user equipment for performing the method of any of claims 15 to 19.