WO2024074085A1 - Data transmission method, electronic device, screen transmitter and storage medium - Google Patents

Abstract

A data transmission method, an electronic device, a screen transmitter and a storage medium. The method is applied to a sending end, the sending end comprises a first wireless communication module and a first application program, and the first wireless communication module is set to be in a monitoring mode. The method comprises: a first application program acquiring first data to be sent, which is packaged with a user datagram protocol, and processing, according to a first preset link parameter, the first data to be sent to obtain first target data (S101); and a first wireless communication module parsing the first target data to determine first data to be broadcast and the first preset link parameter, and broadcasting, according to the first preset link parameter, the first data to be broadcast so that the first data to be broadcast is received by a target receiving end (S102).

Description

Data transmission method, electronic device, screen transmitter and storage medium

This application claims the priority of the Chinese patent application filed with the China Patent Office on October 8, 2022, with application number 202211222789.6. The entire contents of the above application are incorporated by reference into this application.

Technical Field

The present application relates to the field of communication technology, for example, to a data transmission method, an electronic device, a screen transmitter and a storage medium.

Background technique

User Datagram Protocol (UDP) is a connectionless transport layer protocol in the Open System Interconnection (OSI) reference model. UDP provides a simple, unreliable, transaction-oriented information transmission service.

The current standard UDP protocol uses a layered design. The underlying link performs actual data transmission through Ethernet or through a connection-based wireless communication network technology (Wireless Fidelity, WiFi) link. The standard UDP protocol cannot customize the underlying transmission link parameters and can only send data according to the parameters specified in the protocol. The transmission efficiency is low and cannot meet the needs of different scenarios.

Summary of the invention

The present application provides a data transmission method, an electronic device, a screen transmitter and a storage medium to solve the problem that data transmission can only be performed according to the standard UDP protocol during the data transmission process.

The present application provides a data transmission method, which is applied to a transmitting end, wherein the transmitting end includes a first wireless communication module and a first application program, wherein the first wireless communication module is set to a monitoring mode, including:

The first application obtains first data to be sent encapsulated in the user datagram protocol, and processes the first data to be sent according to a first preset link parameter to obtain first target data;

The first wireless communication module parses the first target data to determine first data to be broadcast and first preset link parameters, and broadcasts the first data to be broadcast according to the first preset link parameters, so that the first data to be broadcast is received by a target receiving end.

The present application provides a data transmission method, which is applied to a data transmission device, wherein the data transmission device includes a processor, a memory, a communication interface, and a second wireless communication module, wherein the memory, the communication interface, and the second wireless communication module are all electrically connected to the processor, the second wireless communication module is set to a listening mode, the memory stores a second application, and the second application stores a second preset link parameter;

The data transmission method comprises:

The communication interface establishes a connection with a source device;

The processor acquires the shared data generated by the source device through the communication interface;

The processor executes the second application based on the shared data, the second application being used to obtain second data to be sent encapsulated in a user datagram protocol based on the shared data, and processes the second data to be sent according to a second preset link parameter to obtain second target data;

The processor sends the second target data to the second wireless communication module;

The second wireless communication module parses the second target data to determine second data to be broadcast and second preset link parameters, and broadcasts the second data to be broadcast according to the second preset link parameters so that the second data to be broadcast is received by the target receiving end.

The present application provides a data transmission method, which is applied to a target receiving end, wherein the target receiving end includes a third wireless communication module, a third application program, and an upper layer application program, wherein the third wireless communication module is set to a monitoring mode, including:

The third wireless communication module receives the data to be broadcast, and the data to be broadcast is sent according to the data transmission method provided in any embodiment of the present application;

The third application obtains the data to be broadcast received by the third wireless communication module, and when it is determined that the processing conditions are met, sends the data to be broadcast to the port corresponding to the upper-layer application so that the upper-layer application obtains the data to be broadcast.

The present application provides an electronic device, the electronic device comprising:

at least one processor; and

a memory communicatively coupled to the at least one processor;

The memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the data transmission method described in any embodiment of the present application.

The present application provides a screen transmitter, comprising a processor, a memory, a communication interface and a second wireless communication module, wherein the memory, the communication interface and the second wireless communication module are all electrically connected to the processor;

The communication interface is configured to connect to a source device;

The memory is configured to store a second application program, wherein the second application program stores a second preset link parameter;

The processor is configured to obtain shared data generated by the source device through the communication interface, execute the second application based on the shared data to obtain an adopted second data to be sent encapsulated in a user datagram protocol, processing the second data to be sent according to a second preset link parameter to obtain second target data, and sending the second target data to the second wireless communication module;

The second wireless communication module is configured to parse the second target data to determine second data to be broadcast and second preset link parameters, and broadcast the second data to be broadcast according to the second preset link parameters so that the second data to be broadcast is received by the target receiving end.

The present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the data transmission method described in any embodiment of the present application when executed.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a flow chart of a data transmission method provided according to Embodiment 1 of the present application;

FIG1A is an example diagram of a data message format provided according to Embodiment 1 of the present application;

FIG2 is a flow chart of a data transmission method provided according to Embodiment 2 of the present application;

FIG3 is a timing diagram of data transmission applied to a transmitting end according to Embodiment 2 of the present application;

FIG4 is a flow chart of a data transmission method provided according to Embodiment 3 of the present application;

FIG5 is a flow chart of a data transmission method provided according to Embodiment 4 of the present application;

6 is a timing diagram of data transmission applied to a target receiving end according to a fourth embodiment of the present application;

7 is a diagram showing an implementation example of data transmission between a target receiving end and a transmitting end according to a fourth embodiment of the present application;

FIG8 is a schematic diagram of the structure of a screen transmitter provided according to Embodiment 5 of the present application;

FIG9 is a schematic diagram of the structure of an electronic device provided in accordance with the sixth embodiment of the present application.

Detailed ways

The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, but not necessarily to describe a specific order or sequence. It should be understood that the numbers used in this way are interchangeable where appropriate, so that the embodiments of the application described herein can be implemented in orders other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include steps or units that are not clearly listed or inherent to these processes, methods, products or apparatuses. Other steps or units.

Embodiment 1

FIG1 is a flowchart of a data transmission method provided in Embodiment 1 of the present application. This embodiment is applicable to the case of data transmission. The method can be executed by a transmitting end, which can be an electronic device such as a smart phone, a tablet, a desktop computer, a notebook, etc. The transmitting end includes a first wireless communication module and a first application. The first wireless communication module is set to a monitoring mode. As shown in FIG1, the method includes:

S101. A first application program obtains first data to be sent encapsulated in a user datagram protocol, and processes the first data to be sent according to a first preset link parameter to obtain first target data.

In this embodiment, the first application can be understood as an application used to process the first data to be sent that needs to be transmitted during the data transmission process; the first data to be sent can be understood as data that needs to be sent to an external device. The first data to be sent is generated by an application in the sending end, such as a video player, an audio player, etc. The same device can be used as both a sending end and a receiving end. The embodiment of the present application takes the device as a sending end and sends data to an external device as an example. The first preset link parameter can be understood as the parameter of the transmission link when transmitting the first data to be sent, such as the transmission speed, encoding method, etc. The first target data can be understood as the data obtained after processing the first data to be sent, which can be used to guide the first wireless communication module on how to send data.

When the application X in the device needs to send data to the outside world, it generates shared data, and the shared data is transmitted to the transport layer via the application layer, the presentation layer, and the session layer, and the first data to be sent encapsulated by the user datagram protocol (hereinafter referred to as the UDP protocol) is obtained. The first data to be sent is sent to the UDP port through the UDP protocol, and the first application obtains the first data to be sent by monitoring the UDP port. The first preset link parameters set in advance are stored in the first application, and the first preset link parameters can be customized in advance according to the use scenario, requirements, etc. For example, when the transmission speed is required to be high, a higher transmission speed is set when setting the first preset link parameters, and the user can flexibly adjust the first preset link parameters according to the requirements in different scenarios. The first target data is obtained by processing the first data to be sent according to the first preset link parameters, which can be directly added to the first data to be sent to obtain the first target data, or the first data to be sent can be processed and then the first preset link parameters are added to obtain the first target data. The first application sends the first target data to the first wireless communication module, and the first wireless communication module performs data transmission according to the first target data.

S102: The first wireless communication module parses the first target data to determine the first data to be broadcast and the first preset link parameter, and broadcasts the first data to be broadcast according to the first preset link parameter, so that the first data to be broadcast is received by the target receiving end.

In this embodiment, the first wireless communication module can be understood as a wireless transmission link in the transmitting end. A module for data transmission, such as a network card; the first data to be broadcast can be understood as data that needs to be broadcast to other devices, and the first data to be broadcast can be data obtained after processing the first data to be sent, or the first data to be sent can be directly used as the first data to be broadcast. The target receiving end can be understood as the final destination of the first data to be broadcast.

The first wireless communication module is set to the monitoring mode to monitor the data sent by the first application. By setting the first wireless communication module to the monitoring mode, data interception is avoided. After receiving the first target data, the first wireless communication module parses the first target data, and can parse it according to the field to obtain the first data to be broadcast that can be used for transmission, and the first preset link parameters for guiding the first wireless communication module on how to transmit data. The first data to be broadcast is packaged, encoded, and processed according to the first preset link parameters, and then broadcast and sent outward at a certain transmission speed. The first data to be broadcast can be sent according to the customized first preset link parameters to meet the needs of users. The first wireless communication module broadcasts the first data to be broadcast to the target receiving end.

When the first wireless communication module broadcasts the first data to be broadcast, it can send the first data to be broadcast to the target sending end through the networking strategy. In the same network, the communication between devices agrees on a unique address (bssid) as the unique identifier (ID) of the network. When the client communicates on the network, it must first obtain the bssid of the network as its third address (determines which network) to send data packets, and at the same time, it also filters the received data packets through the third address to see if they are from this network. When the devices communicate, the first address (i.e., the target address, which determines to whom it is sent) is specified to determine which specific device to send to. When the first address is all FF, it represents broadcast communication, and other devices can receive it. The second address is its own address, which represents who sent it, and generally takes the media access control (MAC) address of its own network card. Among them, the above-mentioned device refers to an electronic device including a wireless communication module. Exemplarily, Figure 1A is an example diagram of a data message format. The first data to be broadcast can be encapsulated and broadcasted in this format when broadcasting, and the other data in the figure can carry the specific data content sent.

An embodiment of the present application provides a data transmission method, which is applied to a transmitting end, wherein the transmitting end includes a first wireless communication module and a first application program, the first wireless communication module is set to a listening mode, and a first preset link parameter is predefined, the first preset link parameter is used to guide data transmission, the first data to be sent is processed according to the first preset link parameter to obtain first target data and send it to the first wireless communication module, the first wireless communication module determines first data to be broadcast and the first preset link parameter by parsing the first target data, and the first data to be broadcast is broadcasted through the first preset link parameter, the first preset link parameter can be flexibly set and adjusted according to demand, can meet the demand for data transmission in different scenarios, improve user experience, and at the same time improve data transmission efficiency.

Embodiment 2

FIG2 is a flow chart of a data transmission method provided in Embodiment 2 of the present application. This embodiment is a refinement of the above embodiment. As shown in FIG2 , the method includes:

S201. A first application program obtains first data to be sent encapsulated in a user datagram protocol.

Optionally, after the first application obtains the first data to be sent encapsulated using the User Datagram Protocol, the method further includes: the first application determines a first data length of the first data to be sent; and performs length verification on the first data length.

In this embodiment, the first data length can be understood as the data length of the first data to be sent. When sending the first data to be sent, there may be a data length requirement. For example, due to requirements such as transmission rate and transmission quality, it is impossible to process too large data. Therefore, after obtaining the first data to be sent, it is also necessary to verify the data length of the first data to be sent to determine whether the first data to be sent meets the requirements.

The first data length of the first data to be sent can be determined based on the first data to be sent after the first data to be sent is obtained, or it can be obtained from the data sender of the first data to be sent while the first data to be sent is obtained. After determining the data length of the first data to be sent, the first data length is verified. The verification method can be to pre-set a length threshold to determine whether the first data length is greater than the length threshold. If the first data length is greater than the length threshold, the length verification result of the first data to be sent is determined to be a verification failure; if the first data length is less than or equal to the length threshold, the length verification result of the first data to be sent is determined to be a verification success. If the verification fails, the first data to be sent is not processed or sent. If the verification is successful, continue to perform the following operations to process and send the first data to be sent.

S202. The first application divides first data to be sent into k first data packets, where k is a grouping parameter.

In this embodiment, the first data packet can be understood as a data packet formed by dividing the first data to be sent into blocks. The grouping parameter k is predetermined, and the first application divides the first data to be sent into k parts, each of which forms a first data packet, which can be divided into k first data packets evenly or into k first data packets with uneven data amounts.

Optionally, the value of k is calculated by the sending end according to the adjustment information fed back by the target receiving end.

The target receiving end determines the adjustment information according to the received data and feeds it back to the sending end, and the sending end determines the k value according to the adjustment information to adjust the k value. The k value can be set to an initial value, and the initial k value is used to process the first data to be sent when the first data to be sent is sent for the first time.

S203: The first application program adds redundant data to each first data packet and then encodes the data packet to obtain n first encoded data packets.

In this embodiment, the first encoded data packet can be understood as the data obtained after the first data packet is encoded. Packet, n is an integer greater than k. The first application adds redundant data to each first data packet, and then encodes it according to a preset encoding rule to generate n first encoded data packets.

S204: The first application program adds the first preset link parameter to each first encoded data packet to obtain first target data.

The first application program adds the first preset link parameter to each first coded data packet, and can directly add it to the header, tail or other fields of the first coded data packet to obtain the first target data containing the first preset link parameter. When adding the first preset link parameter to the first coded data packet, the first preset link parameter can be added to a fixed field of the first coded data packet, or can be added to a non-fixed field. Adding to fixed fields such as the header and tail can facilitate subsequent data parsing.

When the first data to be sent is sent directly, there is a packet loss situation. By performing data redundancy processing on the first data to be sent, redundant data is added so that the receiving end can correctly parse the received data. The present application can use a forward error correction algorithm (Forward Error Correction, FEC) to perform data redundancy processing on the data to be sent. When sending data, the sender adds some overhead (redundant information) to each data packet; the receiving end can recover the complete valid data based on the valid data and overhead even if a certain number of data packets are lost according to the received valid data and overhead.

This application can directly perform data redundancy processing on the underlying link, optimize transmission packet loss, reduce the complexity of application data processing, and thus reduce the burden on the application.

S205. The first wireless communication module parses the first target data to determine the first data to be broadcast and the first preset link parameter, and broadcasts the first data to be broadcast according to the first preset link parameter, so that the first data to be broadcast is received by the target receiving end.

The first wireless communication module can parse the first target data according to fields. For example, the header data in the first target data is the first preset link parameter. The first target data is parsed by directly parsing the header data to obtain the first preset link parameter, and the remaining data after removing the header data is used as the first data to be broadcast, that is, each first encoded data packet can be directly used as the first data to be broadcast.

Optionally, the first preset link parameter includes at least one of the following: single-packet encoding mode, single-packet sending data size, data packet sending speed and modulation mode.

In this embodiment, the single-packet encoding method can be understood as the encoding method of each data packet; the single-packet sending data size can be understood as the size of the data included in each data packet; the modulation method can be phase shift keying (PSK), binary phase shift keying (BPSK), frequency shift keying (FSK), amplitude shift keying (ASK), etc.

When the first preset link parameters are determined, the single packet encoding method, the single packet transmission data size, the data packet transmission speed and the modulation method are determined accordingly, that is, the method used to transmit the first coded data packet is determined. The first wireless communication module sends the first data to be broadcast according to the single-packet encoding mode, the single-packet transmission data size, the data packet transmission speed and the modulation mode.

The first wireless communication module broadcasts data through a wireless network communication broadcast link (i.e., a wifibroadcast link), and the processed first data to be broadcasted is broadcasted through the wireless network communication broadcast link and can be broadcasted to nearby devices. When the first data to be broadcasted is broadcasted through the wireless network communication broadcast link, it is sent at a data packet sending speed.

Exemplarily, FIG3 is a timing diagram of a data transmission applied to a sending end provided in an embodiment of the present application, wherein the sending end includes a first application 31, a first upper layer application 32, and a first wireless communication module 33. Among them, the first upper layer application 32 is an application in the sending end that has the need to transmit UDP data, the first application 31 is used to obtain the first data to be sent formed by the first upper layer application 32, the first application 31 includes a UDP listening module 311 and a data redundancy processing module 312, and the first wireless communication module 33 is configured to broadcast the first data to be broadcasted. The first upper layer application 32 is an upper layer application relative to the first application 31.

The first wireless communication module 33 is set in monitor mode. The first upper layer application 32 generates the first data to be sent encapsulated by the UDP protocol, and transmits the first data to be sent to the UDP port. The first application 31 monitors the UDP port through the UDP monitoring module 311, verifies the acquired first data to be sent, for example, verifies the length of the first data to be sent, and when the verification is passed, sends the first data to be sent to the data redundancy processing module 312 through a redundancy processing request. The data redundancy processing module 312 performs data redundancy processing on the first data to be sent, and injects the processed first target data into the first wireless communication module 33 through the data interface in the Packet Capture library (libpcap). The first wireless communication module 33 determines the first preset link parameter and the first data to be broadcast by parsing the first target data, and the first wireless communication module 33 sends the first data to be broadcast according to the first preset link parameter.

The embodiment of the present application provides a data transmission method, which is applied to the transmitting end. The embodiment includes verifying the first data length of the first data to be sent, performing data redundancy processing on the first data to be sent, and adding the first preset link parameter to obtain the first target data. The first preset link parameter is predefined, and the data is broadcast according to the first preset link parameter, which improves the data transmission efficiency; the present application adopts the wifibroadcast link as the transmission link, and flexibly adjusts the link parameters to meet the needs of data transmission in different scenarios, and improves the user experience while improving the transmission efficiency. In addition, the present application performs data redundancy processing on the underlying link, optimizes the situation of transmission packet loss, reduces the probability of transmission packet loss, and improves the accuracy of data transmission.

Embodiment 3

FIG4 is a flow chart of a data transmission method provided in Embodiment 3 of the present application, which is applied to a data transmission device, wherein the data transmission device includes a processor, a memory, a communication interface, and a second wireless communication module, wherein the memory, the communication interface, and the second wireless communication module are all electrically connected to the processor, the second wireless communication module is set to a monitoring mode, the memory stores a second application program, and the second application program stores a second preset link parameter. As shown in FIG4 , the method includes:

S401: A communication interface establishes a connection with a source device.

In this embodiment, the communication interface may be a Type-A interface, a Type-C interface, or other types of USB interfaces. The source device may be an electronic device such as a laptop, a desktop computer, a smart phone, a smart tablet, etc. The communication interface of the data transmission device may be connected to the source device via a data cable, and after the connection, the video, audio, and other data sent by the source device may be received.

Exemplarily, the application scenario of this embodiment may be: the source device projects the screen to the target receiving end through the data transmission device. After the data transmission device is connected to the source device through the communication interface, the data of the source device can be shared to the target receiving end.

S402: The processor obtains shared data generated by the source device through the communication interface.

In this embodiment, shared data can be understood as data shared by the source device to the target receiving end, which can be audio data, video data or other types of data. When the application Y in the source device needs to send data to the outside world, it generates shared data. After the source device generates the shared data, it sends it to the communication interface of the data transmission device, and the processor of the data transmission device obtains the shared data through the communication interface.

S403. The processor executes a second application based on the shared data, where the second application is used to obtain second data to be sent encapsulated using a user datagram protocol based on the shared data, and processes the second data to be sent according to a second preset link parameter to obtain second target data.

In this embodiment, the second application can be understood as an application used to process the second data to be transmitted during the data transmission process; the second data to be transmitted can be understood as data to be sent to an external device. The second preset link parameters can be understood as parameters of the transmission link when transmitting the second data to be transmitted, such as transmission speed, encoding method, etc. The second preset link parameters can be used to guide the second wireless communication module on how to send data. The second target data can be understood as data obtained after processing the second data to be transmitted.

The processor processes the shared data into second data to be sent encapsulated by the user datagram protocol, and the second data to be sent is sent to the UDP port through the UDP protocol. The second application obtains the second data to be sent by monitoring the UDP port. The second application stores the pre-set second preset link parameters, which can be customized in advance according to the usage scenario, requirements, etc. The second preset link parameters are of the same parameter type as the first preset link parameters. The second data to be sent is processed according to the second preset link parameters to obtain the second target data, which can be directly added to the second preset link parameters. The second target data can be obtained from the transmitted data, or the second data to be transmitted can be processed and then the second preset link parameter can be added to obtain the second target data.

S404: The processor sends the second target data to the second wireless communication module.

In this embodiment, the second wireless communication module can be understood as a module in a data transmission device that performs data transmission via a wireless transmission link, such as a network card. The processor receives the second target data sent by the second application and sends it to the second wireless communication module.

S405. The second wireless communication module parses the second target data to determine second data to be broadcast and second preset link parameters, and broadcasts the second data to be broadcast according to the second preset link parameters, so that the second data to be broadcast is received by the target receiving end.

In this embodiment, the second data to be broadcast can be understood as data that needs to be broadcast to other devices. The second data to be broadcast can be data obtained by processing the second data to be sent, or the second data to be sent can be directly used as the second data to be broadcast.

The second wireless communication module is set to monitoring mode to monitor the data sent by the second application. By setting the second wireless communication module to monitoring mode, data interception is avoided. After receiving the second target data, the second wireless communication module parses the second target data, and can parse according to the field to obtain the second data to be broadcast that can be used for transmission, and the second preset link parameters for guiding the second wireless communication module on how to transmit data. The second data to be broadcast is packaged, encoded, and processed according to the second preset link parameters, and then broadcast and sent outward at a certain transmission speed. The second data to be broadcast can be sent according to the customized second preset link parameters to meet the needs of users. The second wireless communication module broadcasts the second data to be broadcast to the target receiving end.

The second wireless communication module broadcasts data via a wireless network communication broadcast link (ie, a wifibroadcast link).

An embodiment of the present application provides a data transmission method, which is applied to a data transmission device. The data transmission device includes a processor, a memory, a communication interface, and a second wireless communication module. The second wireless communication module is set to a listening mode. The second preset link parameters are predefined. The second preset link parameters are used to guide data transmission. The second wireless communication module broadcasts the second data to be broadcast through the second preset link parameters. The second preset link parameters can be flexibly set and adjusted according to needs, which can meet the needs of data transmission in different scenarios, improve user experience, and improve data transmission efficiency.

As an optional embodiment of this embodiment, the data transmission method also includes after the second application obtains the second data to be sent encapsulated by the user datagram protocol based on the shared data, the second application determines the second data length of the second data to be sent and verifies the length of the second data.

In this embodiment, the second data length can be understood as the data length of the second data to be sent. When sending the second data to be sent, there may also be a data length requirement, so the data length of the second data to be sent needs to be verified.

The second data length of the second data to be sent can be determined based on the second data to be sent after the second data to be sent is obtained, or it can be obtained from the data sender of the second data to be sent while the second data to be sent is obtained. After determining the data length of the second data to be sent, the second data length is verified. The verification method can be to pre-set a length threshold to determine whether the second data length is greater than the length threshold. If the second data length is greater than the length threshold, the length verification result of the second data to be sent is determined to be a verification failure; if the second data length is less than or equal to the length threshold, the length verification result of the second data to be sent is determined to be a verification success. If the verification fails, the second data to be sent is not processed or sent. If the verification is successful, continue to perform the following operations to process and send the second data to be sent.

As an optional embodiment of the present embodiment, the second application processes the second data to be sent according to the second preset link parameters to obtain second target data, including: the second application divides the second data to be sent into m second data packets, where m is the grouping parameter; the second application adds redundant data to each second data packet and encodes it to obtain i second encoded data packets; the second application adds the second preset link parameters to each second encoded data packet to obtain the second target data.

In this embodiment, the second data packet can be understood as a data packet formed by the second data blocks to be sent. The second encoded data packet can be understood as a data packet obtained after the second data packet is encoded.

The grouping parameter m is predetermined, and the second application divides the second data to be sent into m parts, each of which forms a second data packet. The second application can be divided into m second data packets evenly or into m second data packets with uneven data amounts. The second application adds redundant data to each second data packet, and then encodes it according to a preset encoding rule to generate i second encoded data packets. The second application adds the second preset link parameter to the header, tail or other field of each second encoded data packet to obtain the second target data containing the second preset link parameter.

Optionally, the value of m is calculated by the data transmission device according to adjustment information fed back by the target receiving end.

The target receiving end determines adjustment information according to the received data and feeds it back to the data transmission device, and the data transmission device determines the m value according to the adjustment information to adjust the m value. The m value can be set to an initial value, and the initial m value is used to process the second data to be sent when the second data to be sent is sent for the first time.

The second preset link parameter includes at least one of the following: a single-packet encoding mode, a single-packet transmission data size, a data packet transmission speed, and a modulation mode.

The present application embodiment provides a data transmission method, which is applied to a data transmission device. The invention includes verifying the second data length of the second data to be sent, performing data redundancy processing on the second data to be sent, and adding a second preset link parameter to obtain the second target data. The second preset link parameter is predefined, and data is broadcast according to the second preset link parameter, thereby improving data transmission efficiency. The present application adopts a wifi broadcast link as a transmission link, and flexibly adjusts the link parameters to meet the needs of data transmission in different scenarios, thereby improving the transmission efficiency and user experience. In addition, the present application performs data redundancy processing on the underlying link, optimizes the situation of transmission packet loss, reduces the probability of transmission packet loss, and improves the accuracy of data transmission.

Embodiment 4

FIG5 is a flow chart of a data transmission method provided in Embodiment 4 of the present application, which is applied to a target receiving end, wherein the target receiving end includes a third wireless communication module, a third application program, and an upper layer application program, and the third wireless communication module is set to a monitoring mode. As shown in FIG5 , the method includes:

S501. The third wireless communication module receives data to be broadcast, and the data to be broadcast is sent according to the data transmission method in any embodiment.

In this embodiment, the data to be broadcast can be understood as data received by the target receiving end, and the data to be broadcast can be the first data to be broadcast or the second data to be broadcast. The target receiving end establishes a communication link with an external device that is a transmitting end or a data transmission device, and receives the data sent by the external device through the communication link. The number of external devices can be one or more.

The target receiving end can be an electronic device such as an interactive tablet. The target receiving end in this application can receive the first data to be broadcasted sent by the sending end, and can also receive the second data to be broadcasted sent by the data transmission device. Taking screen transmission as an example, both the target receiving end and the sending end can directly transmit the screen through the screen transmission software; or, the data transmission device acts as a screen transmitter, and the source device is connected to the target receiving end through the data transmission device to realize screen transmission.

Optionally, the data to be broadcast is received via a wireless network communication broadcast link.

The target receiving end establishes a wireless network communication broadcast link (wifibroadcast link) with the sending end, transmits data through the wifibroadcast link, and the target receiving end receives the data to be broadcast through the wifibroadcast link.

S502: The third application obtains the data to be broadcast received by the third wireless communication module, and when it is determined that the processing conditions are met, sends the data to be broadcast to the port corresponding to the upper-layer application so that the upper-layer application obtains the data to be broadcast.

In this embodiment, the third application can be understood as an application used to process data obtained from other devices during data transmission; the processing condition can be understood as a condition for determining whether the target receiving end processes the received data to be broadcast. When the processing condition is met, the target receiving end processes the received data to be broadcast. The third application program at the end performs operations such as processing and forwarding on the broadcast data. The upper layer application program can be understood as an application at the target receiving end that has a need to obtain the broadcast data.

The third application calls the pcap (libpcap) library to capture the data to be broadcast received by the third wireless communication module. The processing conditions are set in advance, and the target receiving end is judged whether the processing conditions are met according to the information and parameters of the target receiving end. When the target receiving end meets the processing conditions, the upper-layer application that receives the data to be broadcast is determined. The upper-layer application can be set in advance, for example, one or more applications in the target receiving end are used as the upper-layer application; it can also be determined according to the data to be broadcast. When determining the upper-layer application according to the data to be broadcast, it can be determined according to the data type of the data to be broadcast, or the information of the upper-layer application corresponding to the indication data can be carried in the data to be broadcast. After determining the upper-layer application, the data to be broadcast is sent to the UDP port monitored by the upper-layer application, and the upper-layer application obtains the data to be broadcast through the UDP port. Data from the sender to the target receiving end is a one-way transmission of data. For the same device, it can act as a sender to send data outward, and it can also act as a target receiving end to receive data.

Optionally, the processing condition is that the target address corresponding to the data to be broadcast matches the address of the target receiving end, and the networking address corresponding to the data to be broadcast matches the networking address of the target receiving end.

In this embodiment, the target address can be understood as the destination where the broadcast data is transmitted, such as the first address in Figure 1A; the networking address can be understood as the address agreed upon by the devices when networking, and the networking address corresponding to the broadcast data is such as the third address in Figure 1A.

Parse the data to be broadcasted and determine the target address and networking address of the data to be broadcasted. Compare the target address of the data to be broadcasted with the address of the target receiving end to determine whether they match. At the same time, compare the networking address corresponding to the data to be broadcasted with the networking address of the target receiving end to determine whether they match. If both the target address and the networking address match, it is determined that the processing conditions are met.

The embodiment of the present application provides a data transmission method, which is applied to a target receiving end, and receives the data to be broadcast. When it is determined that the processing conditions are met, the data to be broadcast is sent to the port corresponding to the third application so that the third application can obtain the data to be broadcast. The data to be broadcast is sent by the sending end or the data transmission device according to the first preset link parameter or the second preset link parameter. The first preset link parameter and the second preset link parameter can be flexibly adjusted, which improves the data transmission efficiency, can meet the needs of data transmission in different scenarios, and improves the user experience.

As an optional embodiment of the present embodiment, the method also includes, before the third application sends the data to be broadcast to the port corresponding to the upper-layer application, the third application performs redundancy recovery based on the data to be broadcast, and calculates the current packet loss rate of the data to be broadcast based on the redundantly recovered data; the third application determines the grouping parameter k or m based on the current packet loss rate, and feeds back the grouping parameter as adjustment information to the sending end or data transmission device.

In this embodiment, the current packet loss rate may be understood as the packet loss rate of the currently received data to be broadcasted.

Since the sender performs redundant processing on the data when sending the data, the target receiving end performs redundant recovery on the data to be broadcast before sending the data to be broadcast to the port corresponding to the upper-layer application, and restores the data according to the data to be broadcast and the decoding rules to obtain the original data, that is, the first data to be sent or the second data to be sent. Redundant recovery and data redundancy processing use the same algorithm. The data obtained by redundantly recovering the data to be broadcast is sent to the port corresponding to the upper-layer application. At the same time, the current packet loss rate of the data to be broadcast is calculated based on the redundantly recovered data, and the grouping parameter k or m is calculated based on the current packet loss rate. When the received data to be broadcast is the first data to be broadcast, the calculated grouping parameter k is fed back to the sender as adjustment information; when the received data to be broadcast is the second data to be broadcast, the calculated grouping parameter m is fed back to the data transmission device as adjustment information.

This application performs data redundancy processing on the underlying link to optimize the situation of transmission packet loss. After data redundancy processing is performed on the sending end, corresponding redundancy recovery is performed on the receiving end, effectively reducing the probability of transmission packet loss and improving data transmission accuracy.

Exemplarily, FIG6 is a timing diagram of data transmission applied to a target receiving end provided by an embodiment of the present application, wherein the target receiving end includes a third wireless communication module 51, a third application 52, a UDP port 53, and a second upper layer application 54. Among them, the third wireless communication module 51 is configured to receive data to be broadcasted sent by an external device, the third application 52 is used to execute the data transmission method of the present application, and the second upper layer application 54 is an upper layer application of the target receiving end. The third application 52 includes a redundancy recovery module 521. The second upper layer application 54 is an upper layer application relative to the third application 52.

The third wireless communication module 51 is set in the monitor mode, and the third wireless communication module 51 receives the data to be broadcast sent by the transmitter or the data transmission device. The redundancy recovery module 521 in the third application 52 obtains the data to be broadcast from the third wireless communication module 51, for example, by calling the pcap library to capture the data to be broadcast received by the third wireless communication module 51, and when the data to be broadcast is subjected to data redundancy processing, the data to be broadcast is redundancy recovered, and the data obtained after redundancy recovery is forwarded to the UDP port 53. The second upper layer application 54 obtains the data to be broadcast by monitoring the UDP port 53. If the data to be broadcast is not subjected to data redundancy processing, there is no need to perform redundancy recovery, and the data to be broadcast is directly forwarded to the UDP port 53. FIG5 takes the data to be broadcast subjected to data redundancy processing as an example.

Exemplarily, FIG7 is an implementation example diagram of data transmission between a target receiving end and a sending end provided in an embodiment of the present application. Among them, the upper layer application corresponding to the sending end is used as the first upper layer application 61, and the upper layer application corresponding to the target receiving end is used as the second upper layer application 66. The sending end includes the first upper layer application 61, the first application 62 and the first wireless communication module 63, and the target receiving end includes the third wireless communication module 64, the third application 65 and the second upper layer application 66. The first upper layer application 61 generates shared data, and encapsulates it using the UDP protocol to obtain the first data to be sent, and sends the first data to be sent to the first application 62 through the UDP protocol. The first application 62 processes the first data to be sent to obtain the first target data, and injects the first target data into the first wireless communication module 63. The first wireless communication module 63 determines the first preset link parameter and the first data to be broadcast according to the first target data, and processes and sends the first data to be broadcast according to the first preset link parameter. The first wireless communication module 63 sends the first data to be broadcast to the third wireless communication module 64 of the target receiving end through the wifibroadcast link. The third application 65 captures the data to be broadcast received by the third wireless communication module 64, processes the data to be broadcast, and sends the data to be broadcast to the second upper layer application 66 through the UDP protocol.

The implementation principle of data transmission between the data transmission device and the target receiving end is the same as the implementation principle of data transmission between the transmitting end and the target receiving end, which will not be repeated here and can be known by those skilled in the art.

Embodiment 5

FIG8 is a schematic diagram of the structure of a screen transmitter provided in Embodiment 5 of the present application. The screen transmitter includes a communication interface 71, a processor 72, a second wireless communication module 73 and a memory 74. The processor 72 is electrically connected to the communication interface 71, the second wireless communication module 73 and the memory 74 respectively. The communication interface 71 may be a Type-A interface, a Type-C interface or other types of Universal Serial Bus (USB) interfaces, and the communication interface 71 is configured to connect to a source device to receive shared data sent by the source device and send the shared data to the processor 72. The source device has a first processor, a memory and a first display, and the first processor is installed with a first operating system, which is pre-installed with a general driver protocol for audio and video communication between the communication interface 71 and the peripheral device, and the media content corresponding to the audio and video data is the same as the media content displayed on the first display. The communication interface 71 is connected to the processor 72 to send the received shared data to the processor 72.

The memory 74 is configured to store a second application program, wherein the second application program stores a second preset link parameter.

The processor 72 is the control center of the screen transmitter, and uses multiple interfaces and lines to connect multiple parts of the entire screen transmitter. By running or executing software programs and/or modules, it performs multiple functions of the screen transmitter and processes data, thereby monitoring the screen transmitter as a whole. The processor 72 obtains the shared data generated by the source device through the communication interface 71, executes the second application based on the shared data to obtain the second data to be sent encapsulated by the user datagram protocol based on the shared data, processes the second data to be sent according to the second preset link parameters to obtain the second target data, and sends the second target data to the second wireless communication module 73.

The second wireless communication module 73 is a modular product realized by wireless communication technology, which can send the received signal to the wireless communication network in a wireless form, so that the signal can be received by the network in the wireless communication network. Node capture. For example, WiFi modules, Bluetooth modules or ZigBee modules that are widely used in short-range local area network communications. The second wireless communication module 73 is connected to the processor 72. The second wireless communication module 73 provided in this embodiment can parse the second target data obtained from the processor 72, determine the second data to be broadcast and the second preset link parameters, and broadcast the second data to be broadcast according to the second preset link parameters, so as to send the second data to be broadcast to other network nodes in the wireless communication network, and then send the second data to be broadcast to the screen receiving end through the network node to display the video picture.

The screen transmitter provided in the embodiment of the present application can execute the data transmission method provided in the third embodiment of the present application, and has the corresponding functional modules and effects of the execution method.

Example

FIG9 shows a block diagram of an electronic device 80 that can be used to implement an embodiment of the present application. The electronic device can represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present application described and/or required herein.

As shown in FIG9 , the electronic device 80 includes at least one processor 81, and a memory connected to the at least one processor 81, such as a read-only memory (ROM) 82, a random access memory (RAM) 83, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 81 can perform a variety of appropriate actions and processes according to the computer program stored in the ROM 82 or the computer program loaded from the storage unit 88 to the RAM 83. In the RAM 83, a variety of programs and data required for the operation of the electronic device 80 can also be stored. The processor 81, the ROM 82, and the RAM 83 are connected to each other through a bus 84. The input/output (I/O) interface 85 is also connected to the bus 84.

A number of components in the electronic device 80 are connected to the I/O interface 85, including: an input unit 86, such as a keyboard, a mouse, etc.; an output unit 87, such as various types of displays, speakers, etc.; a storage unit 88, such as a disk, an optical disk, etc.; and a communication unit 89, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 89 allows the electronic device 80 to exchange information/data with other devices through a computer network such as the Internet and/or various telecommunication networks.

The processor 81 may be a variety of general and/or special processing components with processing and computing capabilities. Some examples of the processor 81 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), a variety of special artificial intelligence (AI), and a variety of other processors. The processor 81 may include a processor for performing artificial intelligence (AI) computing, a plurality of processors for running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The processor 81 performs the methods and processes described above, such as the data transmission method.

In some embodiments, the data transmission method may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 88. In some embodiments, part or all of the computer program may be loaded and/or installed on the electronic device 80 via the ROM 82 and/or the communication unit 88. When the computer program is loaded into the RAM 83 and executed by the processor 81, one or more steps of the data transmission method described above may be performed. Alternatively, in other embodiments, the processor 81 may be configured to perform the data transmission method in any other suitable manner (e.g., by means of firmware).

Implementations of the systems and techniques described above herein may be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), system on chips (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These implementations may include: being implemented in one or more computer programs that are executable and/or interpreted on a programmable system that includes at least one programmable processor that may be a special purpose or general purpose programmable processor that may receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

The computer programs for implementing the methods of the present application may be written in one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer programs are executed by the processor, the functions/operations specified in the flow charts and/or block diagrams are implemented. The computer programs may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

In the context of the present application, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. Computer-readable storage media may include, but are not limited to, electronic, magnetic, optical, electromagnetic, infrared semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A machine-readable storage medium may include an electrical connection based on one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, EPROM), or a flash memory. device, an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a cathode ray tube (CRT) or a liquid crystal display (LCD) monitor) configured to display information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be configured to provide interaction with a user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: Local Area Network (LAN), Wide Area Network (WAN), blockchain network, and the Internet.

A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client-server relationship is generated by running computer programs on the computers that have a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and virtual private servers (VPS) services.

Claims (17)

1. A data transmission method is applied to a transmitting end, wherein the transmitting end includes a first wireless communication module and a first application program, and the first wireless communication module is set to a monitoring mode, comprising:

   The first application obtains first data to be sent encapsulated in the user datagram protocol, and processes the first data to be sent according to a first preset link parameter to obtain first target data;

   The first wireless communication module parses the first target data to determine first data to be broadcast and first preset link parameters, and broadcasts the first data to be broadcast according to the first preset link parameters, so that the first data to be broadcast is received by a target receiving end.
2. The method according to claim 1, after the first application obtains the first data to be sent encapsulated in the user datagram protocol, further comprises:

   The first application determines a first data length of the first data to be sent, and performs length verification on the first data length.
3. The method according to claim 1, wherein the first application processes the first data to be sent according to the first preset link parameter to obtain the first target data, comprising:

   The first application divides the first data to be sent into k first data packets, where k is a grouping parameter;

   The first application program adds redundant data to each first data packet and then encodes the data packet to obtain n first encoded data packets;

   The first application program adds the first preset link parameter to each first encoded data packet to obtain first target data.
4. The method according to claim 3, wherein the value of k is calculated by the transmitting end based on the adjustment information fed back by the target receiving end.
5. The method according to any one of claims 1 to 4, wherein the first preset link parameter includes at least one of the following: a single packet encoding mode, a single packet sending data size, a data packet sending speed, and a modulation mode.
6. A data transmission method is applied to a data transmission device, wherein the data transmission device comprises a processor, a memory, a communication interface and a second wireless communication module, wherein the memory, the communication interface and the second wireless communication module are all electrically connected to the processor, the second wireless communication module is set to a monitoring mode, the memory stores a second application program, and the second application program stores a second preset link parameter;

   The data transmission method comprises:

   The communication interface establishes a connection with a source device;

   The processor acquires the shared data generated by the source device through the communication interface;

   The processor executes the second application based on the shared data, the second application being used to obtain second data to be sent encapsulated in a user datagram protocol based on the shared data, and processes the second data to be sent according to a second preset link parameter to obtain second target data;

   The processor sends the second target data to the second wireless communication module;

   The second wireless communication module parses the second target data to determine second data to be broadcast and second preset link parameters, and broadcasts the second data to be broadcast according to the second preset link parameters so that the second data to be broadcast is received by the target receiving end.
7. The method according to claim 6, after the second application obtains the second data to be sent encapsulated in the user datagram protocol based on the shared data, further comprising:

   The second application determines a second data length of the second data to be sent, and performs length verification on the second data length.
8. The method according to claim 6, wherein the second application processes the second data to be sent according to the second preset link parameter to obtain the second target data, comprising:

   The second application program divides the second data to be sent into m second data packets, where m is a grouping parameter;

   The second application program adds redundant data to each second data packet and then encodes the data packet to obtain i second encoded data packets;

   The second application program adds the second preset link parameter to each second encoded data packet to obtain second target data.
9. The method according to claim 8, wherein the value of m is calculated by the data transmission device based on the adjustment information fed back by the target receiving end.
10. The method according to any one of claims 6 to 9, wherein the second preset link parameter includes at least one of the following: single packet encoding mode, single packet transmission data size, data packet transmission speed and modulation mode.
11. A data transmission method is applied to a target receiving end, wherein the target receiving end includes a third wireless communication module, a third application program, and an upper layer application program, wherein the third wireless communication module is set to a monitoring mode, including:

    The third wireless communication module receives the data to be broadcast, wherein the data to be broadcast is sent according to the data transmission method according to any one of claims 1 to 10;

    The third application obtains the data to be broadcast received by the third wireless communication module, and sends the data to be broadcast to the upper layer application when it is determined that the processing condition is met. The corresponding port is used so that the upper layer application can obtain the data to be broadcast.
12. The method according to claim 11, wherein the data to be broadcast is received via a wireless network communication broadcast link.
13. The method according to claim 11, wherein the processing condition is: the target address corresponding to the data to be broadcast matches the address of the target receiving end, and the networking address corresponding to the data to be broadcast matches the networking address of the target receiving end.
14. The method according to any one of claims 11 to 13, before the third application sends the data to be broadcast to the port corresponding to the upper layer application, further comprising:

    The third application performs redundancy recovery according to the data to be broadcast, and calculates the current packet loss rate of the data to be broadcast according to the data after redundancy recovery;

    The third application determines a grouping parameter k or m according to the current packet loss rate, and feeds back the grouping parameter as adjustment information to the sending end or the data transmission device.
15. An electronic device, comprising:

    at least one processor; and

    a memory communicatively coupled to the at least one processor;

    The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the data transmission method described in any one of claims 1-5 and 11-14.
16. A screen transmitter comprises a processor, a memory, a communication interface and a second wireless communication module, wherein the memory, the communication interface and the second wireless communication module are all electrically connected to the processor;

    The communication interface is configured to connect to a source device;

    The memory is configured to store a second application program, wherein the second application program stores a second preset link parameter;

    The processor is configured to obtain the shared data generated by the source device through the communication interface, execute the second application based on the shared data to obtain second data to be sent encapsulated in a user datagram protocol based on the shared data, process the second data to be sent according to a second preset link parameter to obtain second target data, and send the second target data to the second wireless communication module;

    The second wireless communication module is configured to parse the second target data to determine second data to be broadcast and second preset link parameters, and broadcast the second data to be broadcast according to the second preset link parameters so that the second data to be broadcast is received by the target receiving end.
17. A computer-readable storage medium stores computer instructions, wherein the computer instructions are used to enable a processor to implement the data transmission method according to any one of claims 1 to 14 when executed.