WO2020259040A1

WO2020259040A1 - Data transmission method, system and device

Info

Publication number: WO2020259040A1
Application number: PCT/CN2020/086322
Authority: WO
Inventors: 刘威; 王知明
Original assignee: 西安万像电子科技有限公司
Priority date: 2019-06-28
Filing date: 2020-04-23
Publication date: 2020-12-30
Also published as: CN110392423B; CN110392423A

Abstract

The present disclosure relates to the field of electronic information technology, and provided thereby are a data transmission method, system and device, which are capable of solving the problems of large bandwidth pressure and picture inconsistency when a sending terminal device sends data to a plurality of terminal devices. The specific technical solution is: when a request for data acquisition of a target terminal device is received, a sending terminal device finding an alternative terminal device in the same local area network as the target terminal device according to the request, and when the target terminal device and the alternative terminal device are capable of communicating, obtaining a target delay time corresponding to the target terminal device and to the sending terminal device as well as an alternative delay time corresponding to the sending terminal device sending to the target terminal device by means of the alternative terminal device; by comparing a difference between the target delay time and the alternative delay time, when the target delay time is less than the alternative delay time, the sending terminal device then sending data to the target terminal device; and when the target delay time is greater than or equal to the alternative delay time, the alternative terminal device sending data to the target terminal device. The present disclosure is used for data transmission.

Description

Data transmission method, system and equipment

Technical field

The present disclosure relates to the field of electronic information technology, and in particular to data transmission methods, systems and equipment.

Background technique

In order to improve the efficiency of data transmission, the prior art will adopt one sending end to transmit data to multiple receiving ends, that is, the sending terminal device distributes the same data source to multiple connected receiving terminal devices. However, in the prior art, when one sending terminal device sends data to multiple terminal devices, the following problems will be encountered: 1. Because the sending terminal device needs to send data to multiple terminal devices, the network downlink bandwidth required for transmission is required Very high, it will cause high bandwidth pressure when transmitting data. For example: the output code stream of the transmitting terminal device is 10Mbits/s, and when 100 terminals are connected at the same time, the required bandwidth is: 100*10Mbits/s or 1Gbits/s; 2. , When the sending terminal device sends data, due to network delay, packet loss and retransmission, etc., the picture will be inconsistent when the data arrives at the receiving terminal device.

Summary of the invention

The embodiments of the present disclosure provide a data transmission method, system, and device, which can solve the problems of high bandwidth pressure and inconsistent images when transmitting data to multiple receiving devices. To address one of the above problems, the technical solution is as follows:

According to a first aspect of the embodiments of the present disclosure, a data transmission method is provided, which is applied to a sending terminal device, and the method includes:

Receiving a data transmission request sent by a target terminal device, where the data transmission request includes address information of the target terminal device, and the data transmission request is used to request data transmission to the target terminal device;

According to the data transmission request, a candidate terminal device in the same local area network as the target terminal device is found, and the candidate terminal device is connected to the sending terminal device;

When the target terminal device and the candidate terminal device can communicate, obtain the target delay time and the candidate delay time, where the target delay time is the delay time for data transmission between the sending terminal device and the target terminal device , The candidate delay time is the delay time for the sending terminal device to transmit data to the target terminal device through the candidate terminal device;

When the target delay time is greater than the candidate delay time, a data sending instruction is generated, and the data sending instruction is used to instruct the candidate terminal device to send data to the target terminal device.

In one embodiment, before finding the candidate terminal device in the same local area network as the target terminal device, the method further includes:

Acquiring the preset number of transmission links and the number of linked terminal devices corresponding to the terminal device, and the terminal device is connected to the sending terminal device;

When the preset number of transmission links is greater than the number of linked terminal devices, it is determined that the terminal device is the candidate terminal device.

In one embodiment, the method acquiring the candidate delay time includes:

Acquire the first delay time and the second delay time. The first delay time refers to the delay time of data transmission between the target sending terminal device and the candidate terminal device. The second delay time is Refers to the delay time of data transmission between the candidate terminal device and the target terminal device;

According to the first delay time and the second delay time, a candidate delay time is obtained.

In an embodiment, before acquiring the target delay time and the candidate delay time, the method further includes:

Sending confirmation request information to the target terminal device, where the confirmation request information is used to request confirmation whether the target terminal device can communicate with the candidate terminal device;

When the confirmation information sent by the target terminal device is received, it is determined that the target terminal device can communicate with the candidate terminal device.

In an embodiment, the candidate terminal device in the method includes N sub-candidate terminal devices, and if N>1, the method further includes:

When the target delay time is less than the candidate delay time corresponding to the M-th candidate terminal device, acquiring the candidate delay time corresponding to the next candidate terminal device corresponding to the M-th candidate terminal device, The M-th candidate terminal device belongs to the candidate terminal device, and the N>M;

Until it is determined that the candidate delay times corresponding to all sub-terminal devices in the candidate terminal device are greater than or equal to the target delay time, data is sent to the target terminal device.

According to the data transmission method provided by the embodiments of the present disclosure, when a sending terminal device receives a request from a target terminal device to obtain data, it finds a candidate terminal device in the same local area network as the target terminal device according to the request, and connects the target terminal device with When the candidate terminal device can communicate, obtain the target delay time corresponding to the target terminal device and the sending terminal device and the candidate delay time that the sending terminal device sends to the target terminal device through the candidate terminal device, and compare the target delay time The difference between the time and the candidate delay time. When the target delay time is less than the candidate delay time, the sending terminal device sends data to the target terminal device; when the target delay time is greater than or equal to the candidate delay time, Then the candidate terminal device sends the data to the target terminal device. When transmitting data to multiple terminal devices, the present disclosure determines the terminal device corresponding to sending the data to the target terminal device by calculating the transmission delay time between different devices, and sends the data through different terminal devices, thereby slowing down the network delay. This prevents the picture from being out of sync, and at the same time reduces the bandwidth pressure on the sending terminal device.

According to a second aspect of the embodiments of the present disclosure, there is provided a transmitting terminal device including: a processor, a receiver, and a transmitter.

The processor is connected to the receiver and the transmitter respectively,

The receiver is configured to receive a data transmission request sent by a target terminal device, the data transmission request includes address information of the target terminal device, and the data transmission request is used to request data transmission to the target terminal device;

The processor is configured to find a candidate terminal device in the same local area network as the target terminal device according to the data transmission request, and the candidate terminal device is connected to the sending terminal device;

It is used to obtain the target delay time and the candidate delay time when the target terminal device can communicate with the candidate terminal device, and the target delay time is the delay of data transmission between the sending terminal device and the target terminal device. Time, the candidate delay time is the delay time for the sending terminal device to transmit data to the target terminal device through the candidate terminal device;

The transmitter generates a data sending instruction when the target delay time is greater than the candidate delay time, and the data sending instruction is used to instruct the candidate terminal device to send data to the target terminal device.

In one embodiment, the processor in the device is also used for

In an embodiment, the candidate terminal devices in the device include N sub-candidate terminal devices, where N>1, and the transmitter is further used for:

Until it is determined that the candidate delay times corresponding to all sub-terminal devices in the candidate terminal device are greater than the target delay time, data is sent to the target terminal device.

According to a third aspect of the embodiments of the present disclosure, there is provided a data transmission system, including:

Sending terminal equipment, alternative terminal equipment and target terminal equipment;

The sending terminal device is connected to the candidate terminal device and the target terminal device respectively,

The candidate terminal device is used to connect with the sending terminal device;

And according to the data sending instruction, send data to the target terminal device;

The sending terminal device is used to receive a data transmission request sent by a target terminal device, the data transmission request includes address information of the target terminal device, and the data transmission request is used to request data transmission to the target terminal device;

The target terminal device is used to send a data transmission request to the sending terminal device and receive data.

It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure.

Description of the drawings

The drawings herein are incorporated into the specification and constitute a part of the specification, show embodiments in accordance with the disclosure, and together with the specification are used to explain the principle of the disclosure.

FIG. 1 is a flowchart of a data transmission method provided by an embodiment of the present disclosure;

FIG. 2 is an interaction diagram of a data transmission method provided by an embodiment of the present disclosure;

FIG. 3 is a structural diagram of a data transmission system provided by an embodiment of the present disclosure;

Fig. 4 is a structural diagram of a transmitting terminal device provided by an embodiment of the present disclosure.

Detailed ways

Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. Rather, they are only examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

The embodiments of the present disclosure provide a data transmission method. As shown in FIG. 1, the data transmission method applied to a sending terminal device includes the following steps:

101. Receive a data transmission request sent by a target terminal device.

The above data transmission request includes the address information of the target terminal device, and the data transmission request is used to request data transmission to the target terminal device.

In the embodiment provided by the present disclosure, before accepting the data transmission request sent by the target terminal device, the method further includes receiving the access session request sent by the target terminal device, and verifying according to the connection request.

The above authentication includes authentication of the user name and password of the target terminal device to be accessed; or, based on other information of the user, such as level, authority, etc., to determine whether the user has the right to access the current session; or The authentication is performed according to the address information of the target terminal device to be accessed. If the address information meets the preset requirements, the authentication is considered to be successful, otherwise, the authentication is unsuccessful. The address information can include IP address, MAC ( Media Access Control (Media Access Control) address and port address and other addresses.

Further, the method of the present disclosure can perform authentication operations on all terminal devices that establish a connection with a target terminal device and initiate an access session request, and determine corresponding operations according to related permissions, such as whether to establish a link, and the type of data to be transmitted.

102. According to the data transmission request, a candidate terminal device that is in the same local area network as the target terminal device is found, and the candidate terminal device is connected to the sending terminal device.

The method of the present disclosure, before finding a candidate terminal device in the same local area network as the target terminal device, further includes: determining whether the terminal device is a candidate terminal device, including:

Find other terminal devices connected to the sending terminal device.

If no other devices are found, the sending terminal device directly sends data to the target terminal device.

When other terminal devices are found, it is further determined whether the terminal device can be used as a candidate terminal device, including:

When the preset number of transmission links is greater than the number of linked terminal devices, it is determined that the terminal device is a candidate terminal device.

Further in view of the above operations, the preset number of transmission links can be obtained by dividing the downlink bandwidth of the local area network where the terminal device is located by the screen code stream and taking the integer quotient; the preset number of transmission links represents the number of transmission channels that the terminal device can support, that is, How many channels of data can be transmitted simultaneously by the terminal device.

Further to the foregoing operations, if there are multiple other devices, it is verified in turn whether the terminal device can be a candidate terminal device according to a preset rule. The preset rule may be that it is preferable to check the first terminal device that directly obtains the data source from the target sending terminal device, and if the terminal device connection is full, check the next-level terminal device of the terminal device. When there are many next-level terminal devices, they can be selected randomly, or they can be selected in a certain predefined order.

103. When the target terminal device and the candidate terminal device can communicate, acquire the target delay time and the candidate delay time.

The target delay time is the delay time for data transmission between the sending terminal device and the target terminal device, and the candidate delay time is the delay time for the sending terminal device to transmit data to the target terminal device through the candidate terminal device. Time.

When confirming that the target terminal device and the candidate terminal device can pass through, the method of the present disclosure includes:

Send confirmation request information to at least one of the target terminal device and the candidate terminal device, where the confirmation request information is used to instruct the target terminal device to determine that it can communicate with the candidate terminal device.

When the target terminal device and the confirmation information sent by at least one of the candidate terminal devices are received, it is determined that the target terminal device and the candidate terminal device can communicate.

In the above method, when the sending terminal device issues a confirmation request message and requires interoperability detection between the target terminal device and the candidate terminal device, it can specify which party to send the detection message to, for example, it can be specified by default according to preset rules The candidate terminal equipment currently required to access actively initiates interoperability detection, or randomly designates a party to initiate interoperability detection.

The above method can be implemented in the following two ways in specific implementation:

The first way: the network diagnostic tool can be used to determine whether the target terminal device and the candidate terminal device can communicate, for example, a Ping (Packet Internet Groper) command can be sent to the target terminal device.

The second method: The target terminal device sends a TCP/UDP packet to the candidate terminal device. If the candidate terminal device can receive and send a response message to the sender, it can confirm that the two terminal devices can communicate. On the contrary, If it exceeds the preset time and fails to receive the response message from the other party, it is confirmed that the two ends cannot be connected.

After confirming whether the target terminal device and the candidate terminal device can communicate, the terminal device that initiates the interoperability detection also needs to report confirmation information to the sending terminal device. The confirmation information is used to indicate whether the communication is possible.

In the method of the present disclosure, after measuring the bandwidth set network delay between the sending terminal device, the candidate terminal device, and the target terminal device, obtaining the candidate delay time includes:

Acquire the first delay time and the second delay time. The first delay time refers to the delay time for transmitting data between the sending terminal device and the candidate terminal device, and the second delay time refers to the standby time. Select the terminal equipment and the delay time of data transmission between the target terminal equipment;

Here are specific examples to illustrate: the above-mentioned first delay time is: T1=M/B1+t1,

Among them, T1 represents the total delay time from the sending terminal device to the candidate terminal device; M represents the real-time picture stream; B1 represents the bandwidth from the sending terminal device to the candidate terminal device; t1 represents the sending terminal device to the candidate terminal device Network round-trip delay;

The above second delay time is: T2=M/B2+t2;

Among them, T2 represents the total delay from the candidate terminal device to the target terminal device; M represents the real-time image stream from the selected terminal device to the target terminal device; B2 represents the bandwidth from the candidate terminal device to the target terminal device; t2 represents the candidate terminal The network round-trip delay between the device and the target terminal device.

Based on the above calculation, the candidate delay time is T1+T2.

In the specific implementation process, the candidate delay time also includes the preset delay time, that is, the candidate delay time is T1+T2+TD, and the preset time TD refers to the preset allowable candidate terminal equipment to the target For the picture delay between terminal devices, the value of the preset time TD can be set and adjusted according to actual needs, for example, it can be set to 2 milliseconds.

104. When the target delay time is greater than the candidate delay time, a data sending instruction is generated.

The data sending instruction is used to instruct the candidate terminal device to send data to the target terminal device.

While sending a data sending instruction to the candidate terminal device, it also sends a data receiving instruction to the target terminal device. The data receiving instruction is used to instruct the target terminal device to establish a transmission link with the candidate terminal device 302, and from the candidate terminal device Receive data.

When determining which terminal device sends data to the target terminal device, the method of the present disclosure is determined according to the difference between the target delay time and the candidate delay time, that is, the delay time for the sending terminal device to transmit data to the target terminal device alone The difference between the delay time that the sending terminal device sends to the candidate terminal device and the candidate terminal device sends to the target terminal device is determined by the difference.

Specifically, if the candidate delay time is greater than the target delay time, the sending terminal device sends the real-time picture;

If the candidate delay time is less than the target delay time, the candidate terminal device sends the data. In the prior art, the target delay time for the sending terminal device to send data to the target terminal device will cause the data screen to be out of sync. In the method of the present disclosure, when the candidate delay time is less than the target delay time, the candidate terminal The device sends data to the target terminal device, which not only reduces the delay time, thereby avoiding the data picture is not synchronized, but also shares the network bandwidth pressure of the sending terminal device.

If the candidate delay time is equal to the target delay time, it is preferable that the candidate terminal device sends the data; in this way, the bandwidth load of the sending terminal device can be reduced.

Further, if there is more than one candidate terminal device, for example, the terminal device includes N sub candidate terminal devices, N>1, and the candidate delay time also includes at least one backup device corresponding to the N sub candidate terminal devices. Selecting the delay time, the method of the present disclosure further includes: before the sending terminal device sends data to the second terminal device, sequentially determining whether the candidate delay time corresponding to each candidate terminal device in the candidate terminal devices is greater than the target Delay time:

When the target delay time is less than the candidate delay time corresponding to the Mth candidate terminal device, obtain the candidate delay time corresponding to the next candidate terminal device corresponding to the current candidate terminal device, and the Mth candidate terminal device Each candidate terminal device belongs to the candidate terminal device, and the N>M;

Until it is determined that the candidate delay times corresponding to all the sub-terminal devices in the candidate terminal device are greater than or equal to the target delay time, the sending terminal device sends data to the target terminal device.

If the candidate delay time of the current candidate terminal device is greater than the target delay time, continue to determine the candidate delay time corresponding to the next candidate terminal device corresponding to the current candidate terminal device. If the candidate delay time is greater than the target delay time, it is determined that the sending terminal device sends data to the target terminal device, and the process ends.

Here, the sending terminal device S, the terminal device A, the terminal device B, and the terminal device C list specific embodiments for explanation:

First, the terminal device A and the terminal device B send data transmission requests to the sending terminal device S in turn, and after the sending terminal device S is approved, the connection with the terminal device A and the terminal device B is established.

After the sending terminal device S receives the connection request of the terminal device C, it determines whether the terminal device A, the terminal device B, and the terminal device C are in the same local area network according to the data transmission request.

When the terminal device A, the terminal device B, and the terminal device C are in the same local area network, it is further determined whether the terminal device A and the terminal device B meet the rules of the candidate terminal device.

When terminal equipment A and terminal equipment B comply with the rules of candidate terminal equipment, that is, terminal equipment A and terminal equipment B are the candidate terminal equipment of the candidate terminal equipment, then it is further judged that terminal equipment A, terminal equipment B, terminal Whether device C can communicate.

When the terminal device A, the terminal device B, and the terminal device C cannot communicate, the sending terminal device S sends data to the terminal device C.

When the terminal device A, the terminal device B, and the terminal device C can communicate, the target delay time from the terminal device to the terminal device C is obtained in turn, the first candidate delay time corresponding to the terminal device A, and the first candidate delay time corresponding to the terminal device B Two alternative delay time; among them, the first alternative delay time is: the delay time for sending data from terminal device S to terminal device A, and then from terminal device A to target terminal device C; the second alternative delay time The time is: the delay time for sending data from the terminal device S to the terminal device A, and then from the terminal device A to the terminal device B, and then from the terminal device B to the target terminal device C.

When the target delay time is greater than or equal to the first candidate delay time, the terminal device A sends data to the terminal device C;

When the target delay time is less than the first candidate delay time, the second candidate delay time corresponding to the terminal device B is further determined. When the target delay time is greater than or equal to the second candidate delay time, the terminal device B sends data to terminal C.

When the target delay time is less than the second candidate delay time, the sending terminal device S sends the data to the terminal device C.

Example two

Based on the data transmission method provided by the embodiment corresponding to FIG. 1, another embodiment of the present disclosure provides a data transmission method. The method includes a sending terminal device, a first terminal device, and a target terminal device. For example, the sending terminal device may be A terminal device or network server used for data collection, encoding, and transmission. The first terminal device may also be a terminal device or network server used for receiving, decoding, and displaying. This embodiment takes the candidate terminal device as the first terminal device as an example for description. In a specific implementation process, the candidate terminal device may include at least one terminal device, which does not mean that the present disclosure is limited to this. As shown in FIG. 2, the data transmission method provided in this embodiment includes the following steps:

201. The first terminal device establishes a transmission link with the sending terminal device.

Before the first terminal device establishes a transmission link with the sending terminal device, the first terminal device

202. The target terminal device sends a data transmission request to the sending terminal device.

The sending terminal device performs authentication processing on the target terminal device, and after passing the authentication processing, obtains the address information of the target terminal device.

203. According to the foregoing data transmission request, when the first terminal device and the target terminal device are in the same local area network, send request confirmation information to the target terminal device and the first terminal device respectively.

When the first terminal device and the target terminal device are not in the same local area network, the sending terminal device sends data to the target terminal device.

Before judging whether the first terminal device and the target terminal device are in the same local area network, the method of the present disclosure further includes judging whether the first terminal device can serve as a candidate terminal device, including:

Acquiring the preset number of transmission links and the number of linked terminal devices corresponding to the first terminal device, where the terminal device is connected to the sending terminal device;

When the preset number of transmission links is greater than the number of linked terminal devices, it is determined that the first terminal device is a candidate terminal device.

204. When receiving confirmation information from the target terminal device and the first terminal device, acquire the target delay time and the first delay time.

When the confirmation information of the target terminal device and the first terminal device is not received, the sending terminal device sends data to the target terminal device.

The confirmation information is used to indicate that the target terminal device and the first terminal device can communicate.

The target delay time means that the target delay time is the delay time of data transmission between the sending terminal device and the target terminal device.

The first delay time refers to the delay time for the sending terminal device to transmit data to the target terminal device through the first terminal device.

205. When the target delay time is greater than the first delay time, the first terminal device sends data to the target terminal device.

When the target delay is less than or equal to the first delay time, the sending terminal device sends a data sending instruction to the first terminal device.

206. The first terminal device sends data to the target terminal device according to the foregoing data sending instruction.

This solution is mainly aimed at the situation where multiple receiving terminals are located in the same local area network. For this scenario, this solution first judges the interoperability between two receiving terminal devices. For two receiving terminals that can communicate, measure the bandwidth and network between the two receiving terminals and between the receiving terminal and the real-time data source. Delay (RTT, Round-Trip Time), under the premise of ensuring that the picture synchronization delay between two receiving terminals is within a predetermined difference, the former receiving terminal is used as the video source of the rear access terminal to provide video for it Picture. This solution not only saves the downlink bandwidth of the sending terminal equipment, but also ensures the picture synchronization between the receiving ends.

According to the data transmission method provided by the embodiments of the present disclosure, when a sending terminal device receives a request from a target terminal device to obtain data, it finds a candidate terminal device in the same local area network as the target terminal device according to the request, and connects the target terminal device with When the candidate terminal device can communicate, obtain the target delay time corresponding to the target terminal device and the sending terminal device and the candidate delay time that the sending terminal device sends to the target terminal device through the candidate terminal device, and compare the target delay time The difference between the time and the candidate delay time. When the target delay time is less than the candidate delay time, the sending terminal device sends data to the target terminal device; when the target delay time is greater than or equal to the candidate delay time, Then the candidate terminal device sends the data to the target terminal device. When transmitting data to multiple terminal devices, the present disclosure determines the terminal device corresponding to the sending data by calculating the transmission delay time between different devices, and sends the data through different terminal devices, thereby slowing down the network delay and avoiding the screen Asynchronization also reduces the bandwidth pressure on the sending terminal equipment.

Example three

Based on the data transmission method described in the embodiment corresponding to FIG. 1 and FIG. 2, the following are system embodiments of the disclosure, which can be used to implement the method embodiments of the disclosure.

The embodiment of the present disclosure provides a data transmission device. As shown in FIG. 3, the data transmission system 30 includes: a sending terminal device 301, an alternative terminal device 302, and a target terminal device 303;

The sending terminal device 301 is connected to the candidate terminal device 302 and the target terminal device 303 respectively,

The candidate terminal device 302 is used to connect with the sending terminal device 301;

And according to the data sending instruction, send data to the target terminal device 303;

The sending terminal device 301 is configured to receive a data transmission request sent by a target terminal device 303, the data transmission request includes address information of the target terminal device, and the data transmission request is used to request data transmission to the target terminal device;

According to the data transmission request, a candidate terminal device 302 in the same local area network as the target terminal device is found, and the candidate terminal device 302 is connected to the sending terminal device 301;

When the target terminal device 303 and the candidate terminal device 302 can communicate, the target delay time and the candidate delay time are acquired, and the target delay time is the data transmission between the sending terminal device 301 and the target terminal device 303 The candidate delay time is the delay time for the sending terminal device 301 to transmit data to the target terminal device 303 through the candidate terminal device 302;

When the target delay time is greater than the candidate delay time, a data sending instruction is generated, and the data sending instruction is used to instruct the candidate terminal device 302 to send data to the target terminal device 303.

The target terminal device 303 is used to send a data transmission request to the sending terminal device and receive data.

In an optional embodiment, when the target delay time is greater than or equal to the candidate delay time, the target terminal device 303 is also used to:

Acquire a data receiving instruction, which is used to instruct the target terminal device 303 to connect to the candidate terminal device 302 and receive data from the candidate terminal device 302.

In the data transmission system provided by the embodiments of the present disclosure, when the sending terminal device receives a request for the target terminal device to obtain data, it finds a candidate terminal device in the same local area network as the target terminal device according to the request, and the target terminal device and the target terminal device When the candidate terminal device can communicate, obtain the target delay time corresponding to the target terminal device and the sending terminal device and the candidate delay time that the sending terminal device sends to the target terminal device through the candidate terminal device, and compare the target delay time The difference between the time and the candidate delay time. When the target delay time is less than the candidate delay time, the sending terminal device sends data to the target terminal device; when the target delay time is greater than or equal to the candidate delay time, Then the candidate terminal device sends the data to the target terminal device. When transmitting data to multiple terminal devices, the present disclosure determines the terminal device corresponding to the sending data by calculating the transmission delay time between different devices, and sends the data through different terminal devices, thereby slowing down the network delay and avoiding the screen Asynchronization also reduces the bandwidth pressure on the sending terminal equipment.

Example four

Based on the data transmission method described in the embodiment corresponding to FIG. 1 and FIG. 2, the following are device embodiments of the disclosure, which can be used to implement the method embodiments of the disclosure.

An embodiment of the present disclosure provides a data transmission device. As shown in FIG. 4, the sending terminal device 40 includes a receiver 401, a processor 402, and a transmitter 403;

The processor 402 is respectively connected to the receiver 401 and the transmitter 403,

The receiver 401 is configured to receive a data transmission request sent by a target terminal device, the data transmission request includes address information of the target terminal device, and the data transmission request is used to request data transmission to the target terminal device;

The processor 402 is configured to find a candidate terminal device in the same local area network as the target terminal device according to the data transmission request, and the candidate terminal device is connected to the sending terminal device;

The transmitter 403 generates a data sending instruction when the target delay time is greater than the candidate delay time, and the data sending instruction is used to instruct the candidate terminal device to send data to the target terminal device.

In one embodiment, the processor 402 in the device is also used for

In an embodiment, the candidate terminal devices in the device include N sub-candidate terminal devices, where N>1, and the transmitter 403 in the device is further used for:

The embodiment of the present disclosure provides a sending terminal device. When receiving a request for a target terminal device to obtain data, it finds a candidate terminal device in the same local area network as the target terminal device according to the request, and connects the target terminal device with the backup device When the selected terminal device is able to communicate, obtain the target delay time corresponding to the target terminal device and the sending terminal device and the candidate delay time corresponding to the sending terminal device sent to the target terminal device through the candidate terminal device, and compare the target delay time When the target delay time is less than the candidate delay time, the sending terminal device sends data to the target terminal device; when the target delay time is greater than or equal to the candidate delay time, then The candidate terminal device sends data to the target terminal device. When transmitting data to multiple terminal devices, the present disclosure determines the terminal device corresponding to the sending data by calculating the transmission delay time between different devices, and sends the data through different terminal devices, thereby slowing down the network delay and avoiding the screen Asynchronization also reduces the bandwidth pressure on the sending terminal equipment.

Based on the data transmission method described in the embodiment corresponding to FIG. 1 and FIG. 2, the embodiment of the present disclosure also provides a computer-readable storage medium. For example, the non-transitory computer-readable storage medium may be a read-only memory (English : Read Only Memory, ROM), Random Access Memory (English: Random Access Memory, RAM), CD-ROM, magnetic tape, floppy disk and optical data storage device, etc. The storage medium stores computer instructions for executing the data transmission method described in the above-mentioned embodiment corresponding to FIG. 1 and FIG. 2, which will not be repeated here.

After considering the specification and practicing the disclosure disclosed herein, those skilled in the art will easily think of other embodiments of the present disclosure. This application is intended to cover any variations, uses, or adaptive changes of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field not disclosed in the present disclosure . The description and the embodiments are to be regarded as exemplary only, and the true scope and spirit of the present disclosure are pointed out by the following claims.

Claims

A data transmission method, characterized in that it is applied to a sending terminal device, and the method includes:

Receiving a data transmission request sent by a target terminal device, where the data transmission request includes address information of the target terminal device, and the data transmission request is used to request data transmission to the target terminal device;

According to the data transmission request, a candidate terminal device that is in the same local area network as the target terminal device is found, and the candidate terminal device is connected to the sending terminal device;

When the target terminal device and the candidate terminal device can communicate, obtain the target delay time and the candidate delay time, where the target delay time is the transmission between the sending terminal device and the target terminal device Data delay time, where the candidate delay time is the delay time for the sending terminal device to transmit data to the target terminal device through the candidate terminal device;

When the target delay time is greater than the candidate delay time, a data sending instruction is generated, and the data sending instruction is used to instruct the candidate terminal device to send data to the target terminal device.
The method according to claim 1, wherein before finding a candidate terminal device in the same local area network as the target terminal device, the method further comprises:

Acquiring the preset number of transmission links and the number of linked terminal devices corresponding to the terminal device, where the terminal device is connected to the sending terminal device;

When the preset number of transmission links is greater than the number of linked terminal devices, it is determined that the terminal device is the candidate terminal device.
The method according to claim 1, wherein said obtaining the candidate delay time comprises;

Acquire the first delay time and the second delay time. The first delay time refers to the delay time of data transmission between the target sending terminal device and the candidate terminal device. The second delay time Time refers to the delay time of data transmission between the candidate terminal device and the target terminal device;

According to the first delay time and the second delay time, a candidate delay time is obtained.
The method according to claim 1, wherein before acquiring the target delay time and the candidate delay time, the method further comprises:

Sending confirmation request information to the target terminal device, where the confirmation request information is used to request confirmation whether the target terminal device can communicate with the candidate terminal device;

When the confirmation information sent by the target terminal device is received, it is determined that the target terminal device and the candidate terminal device can communicate.
The method according to claim 1, wherein the candidate terminal device comprises N sub-candidate terminal devices, and if N>1, the method further comprises:

When the target delay time is less than the candidate delay time corresponding to the M-th candidate terminal device, obtain the candidate delay corresponding to the next candidate terminal device corresponding to the M-th candidate terminal device. At time, the M-th candidate terminal device belongs to the candidate terminal device, and the N>M;

Until it is determined that the candidate delay times corresponding to all sub-terminal devices in the candidate terminal devices are greater than or equal to the target delay time, data is sent to the target terminal device.
A data transmission system, which is characterized by comprising: a sending terminal device, an alternative terminal device and a target terminal device;

The sending terminal device is connected to the candidate terminal device and the target terminal device respectively,

The candidate terminal device is used to connect with the sending terminal device;

And according to the data sending instruction, sending data to the target terminal device;

The sending terminal device is configured to receive a data transmission request sent by the target terminal device, the data transmission request includes address information of the target terminal device, and the data transmission request is used to request a request to the target terminal device. transfer data;

According to the data transmission request, the candidate terminal device that is in the same local area network as the target terminal device is found, and the candidate terminal device is connected to the sending terminal device;

When the target terminal device and the candidate terminal device can communicate, obtain the target delay time and the candidate delay time, where the target delay time is the transmission between the sending terminal device and the target terminal device Data delay time, where the candidate delay time is the delay time for the sending terminal device to transmit data to the target terminal device through the candidate terminal device;

When the target delay time is greater than the candidate delay time, a data sending instruction is generated, and the data sending instruction is used to instruct the candidate terminal device to send data to the target terminal device.

The target terminal device is used to send a data transmission request to the sending terminal device and receive data.
A transmitting terminal device, which is characterized by comprising: a receiver, a processor and a transmitter,

The processor is respectively connected to the receiver and the transmitter,

The receiver is configured to receive a data transmission request sent by a target terminal device, the data transmission request includes address information of the target terminal device, and the data transmission request is used to request data transmission to the target terminal device;

The processor is configured to find, according to the data transmission request, a candidate terminal device in the same local area network as the target terminal device, and the candidate terminal device is connected to the sending terminal device;

It is used to obtain a target delay time and a candidate delay time when the target terminal device and the candidate terminal device can communicate, where the target delay time is between the sending terminal device and the target terminal device The delay time of data transmission between the two, where the candidate delay time is the delay time for the sending terminal device to transmit data to the target terminal device through the candidate terminal device;

The transmitter generates a data sending instruction when the target delay time is greater than the candidate delay time, where the data sending instruction is used to instruct the candidate terminal device to send data to the target terminal device.
The device according to claim 7, wherein the processor is further configured to

Acquiring the preset number of transmission links and the number of linked terminal devices corresponding to the terminal device, where the terminal device is connected to the sending terminal device;

When the preset number of transmission links is greater than the number of linked terminal devices, it is determined that the terminal device is the candidate terminal device.
The device according to claim 7, wherein the processor is further configured to

Acquire the first delay time and the second delay time. The first delay time refers to the delay time of data transmission between the target sending terminal device and the candidate terminal device. The second delay time Time refers to the delay time of data transmission between the candidate terminal device and the target terminal device;

According to the first delay time and the second delay time, a candidate delay time is obtained.
The device according to claim 7, wherein the candidate terminal device comprises N sub-candidate terminal devices, and if N>1, the transmitter is further configured to:

When the target delay time is less than the candidate delay time corresponding to the M-th candidate terminal device, obtain the candidate delay corresponding to the next candidate terminal device corresponding to the M-th candidate terminal device. At time, the M-th candidate terminal device belongs to the candidate terminal device, and the N>M;

Until it is determined that the candidate delay times corresponding to all sub-terminal devices in the candidate terminal devices are greater than the target delay time, data is sent to the target terminal device.