WO2022062799A1

WO2022062799A1 - Data transmission method and related apparatus

Info

Publication number: WO2022062799A1
Application number: PCT/CN2021/114112
Authority: WO
Inventors: 孙伟
Original assignee: 华为技术有限公司
Priority date: 2020-09-25
Filing date: 2021-08-23
Publication date: 2022-03-31
Also published as: CN114257820A

Abstract

Embodiments of the present application disclose a data transmission method, comprising: a remote device acquiring camera data and determining a priority order for the acquired camera data; and the remote device sending the camera data to a local device according to the priority order. In parallel transmission of multiple camera streams, the camera streams are sent in sequence on the basis of respective real-time requirements thereof, such that high-priority data is sent first, thereby ensuring that camera streams having high real-time requirements are transmitted with priority, and camera streams having low real-time requirements are delayed. In this way, the invention reduces inter-device delays for camera streams having high real-time requirements, thereby improving user experience.

Description

Data transmission method and related device

This application claims the priority of the Chinese patent application with the application number 202011027401.8 and the invention titled "Data Transmission Method and Related Apparatus" filed with the China Patent Office on September 25, 2020, the entire contents of which are incorporated into this application by reference.

technical field

The embodiments of the present application relate to the field of communications, and in particular, to a data transmission method and a related device.

Background technique

With the rapid development of multi-device interconnection technology and strong consumer demand, more and more consumer electronic devices have distributed access capabilities. Distributed camera refers to the local device accessing or controlling the camera on the remote device through the network to achieve the purpose of using the camera across devices.

A camera is a scene that collects data and consumes data in real time. It has very high real-time requirements, but the business real-time requirements of each camera data stream are different. For example, the preview is presented to the user in real time, and the real-time requirements are very high. The preview data should be presented to the user as quickly as possible, and the data frame should be stable to reduce the probability of stalling; while the large picture is generally directly stored in the file, the user Without direct perception, the real-time requirements are relatively low.

Therefore, a transmission mechanism that adapts to the network bandwidth is required, which not only ensures the smooth and stable output of camera stream data, reduces the probability of stalling, but also meets the real-time requirements of each service stream of distributed cameras and achieves a good user experience.

SUMMARY OF THE INVENTION

A first aspect of the embodiments of the present application provides a data transmission method, including:

The remote device collects the shooting data, the shooting data is the data obtained by the camera of the remote device, and the camera of the remote device can be one or more. The remote device determines the priority of the shooting data, and based on the above priority Sorting sends the shooting data to the local device, and the remote device can determine the priority in various ways. For example, the remote device identifies the data type of the shooting data and determines the priority sorting Prioritization is determined.

When multiple camera streams are transmitted concurrently, they are sent in sequence based on the real-time requirements of the camera streams, and the data with higher priority is sent first, so as to ensure that the camera streams with high real-time requirements are transmitted first, and the camera streams with low real-time requirements are sent with a delay and lag. , to reduce the cross-device latency of high-real-time camera streams and improve user experience.

Based on the first aspect of the embodiments of the present application, in the first implementation of the first aspect of the embodiments of the present application, the priority ordering rule is that the smaller the delay threshold of the shooting data, the higher the priority of the shooting data.

In the embodiment of the present application, a priority sorting solution is provided for determining priorities according to a delay threshold of shooting data.

Based on the first aspect of the embodiment of the present application, in the second implementation of the first aspect of the embodiment of the present application, the priority sorting rule is that the priority is based on the preview data, photographing thumbnail data, video call data, video recording data, photographing data The big picture data decreases sequentially.

Based on any one of the first aspect to the second implementation manner of the first aspect of the embodiments of the present application, in the third implementation manner of the first aspect of the embodiments of the present application, the remote device calculates the distance from the remote device to the local device. The transmission code rate required for sending the shooting data, so that the local device configures the bandwidth resources of the remote device according to the transmission code rate.

A second aspect of the embodiments of the present application provides a data transmission method, including:

The local device receives the transmission bit rate sent by the remote device, and the transmission bit rate is the bit rate required by the remote device to send shooting data to the local device, where the shooting data is the data obtained by the camera of the remote device, and the The camera may include one or more local devices connected to two or more remote devices; the local device configures bandwidth resources for each remote device according to the above-mentioned transmission code rate.

Through this embodiment, the local device can dynamically allocate the network transmission bandwidth of each remote device and the data stream of each remote device, ensure the smooth and stable output of the data frame of the camera stream of the remote device, and achieve the distributed camera stream of each camera. business real-time requirements.

Based on the second aspect of the embodiments of the present application, in the first implementation manner of the second aspect of the embodiments of the present application, the configuration method for the local device to configure the bandwidth resources for each remote device according to the transmission bit rate includes:

BW _x =BW _total *(B _x /B _total );

BW _x is the bandwidth quota of the xth remote device, the xth remote device belongs to any of the remote devices connected to the local device, BW _total is the total bandwidth that can be allocated by the local device, and Bx is the _xth remote device Transmission code rate of the remote device, B _total is the total transmission code rate required by all remote devices.

A third aspect of the embodiments of the present application provides a remote device, where the remote device executes the foregoing first aspect and the method of any implementation manner of the first aspect.

A fourth aspect of the embodiments of the present application provides a local device, where the local device executes the foregoing second aspect and the method of any implementation manner of the second aspect.

A fifth aspect of the embodiments of the present application provides a computer storage medium, where instructions are stored in the computer storage medium, and when the instructions are executed on a computer, the instructions cause the computer to execute the foregoing first aspect and any implementation manner of the first aspect or the foregoing first aspect. The method of the second aspect and any embodiment of the second aspect.

A sixth aspect of the embodiments of the present application provides a computer software product, which, when executed on a computer, enables the computer to execute the first aspect and any implementation manner of the first aspect or the second aspect and any of the second aspect. The method of one embodiment.

Description of drawings

1 is a schematic diagram of a network architecture in an embodiment of the present application;

2 is a schematic flowchart of a data transmission method in an embodiment of the present application;

3 is a schematic diagram of a logic diagram of a local device dynamically allocating network bandwidth resources in an embodiment of the present application;

4 is a schematic diagram of data transmission based on priority sorting in an embodiment of the present application;

5 is a schematic diagram of a dynamic control data transmission in an embodiment of the application;

6 is a schematic structural diagram of a local device in an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a remote device in an embodiment of the present application;

8 is another schematic structural diagram of a local device in an embodiment of the present application;

FIG. 9 is another schematic structural diagram of a remote device in an embodiment of the present application;

10 is another schematic structural diagram of a local device in an embodiment of the application;

FIG. 11 is another schematic structural diagram of a remote device in an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. In this application, "at least one" means one or more, and "plurality" means two or more. "And/or", which describes the association relationship of the associated objects, indicates that there can be three kinds of relationships, for example, A and/or B, which can indicate: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A, B can be singular or plural. The character "/" generally indicates that the associated objects are an "or" relationship. "At least one item(s) below" or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (a) of a, b or c, can represent: a, b, c, a and b, a and c, b and c or a and b and c, where a, b and c can be It can be single or multiple. It is worth noting that "at least one item(s)" can also be interpreted as "one item(s) or more(s)".

It should be noted that, in this application, words such as "exemplary" or "for example" are used to represent examples, illustrations or illustrations. Any embodiment or design described in this application as "exemplary" or "such as" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present the related concepts in a specific manner.

The descriptions of the first, second, etc. appearing in the embodiments of the present application are only used for illustration and distinguishing the description objects, and have no order. any limitations of the examples.

Referring to FIG. 1, a network architecture according to an embodiment of the present application includes:

For the local device and the remote device, the number of the remote devices is not limited in this embodiment of the application, and this embodiment only takes two remote devices as an example for description (remote device 1 and remote device 2).

The multi-camera bandwidth cooperative allocation module of the local device can dynamically allocate the network bandwidth quota of each remote device based on the real-time data flow service and real-time transmission code rate of each cross-device camera; the multi-camera stream dynamic sending module of the remote device can , based on the bandwidth quota and the real-time requirements of each camera stream, dynamically control the data transmission of each camera stream, smooth the transmission bit rate and meet the real-time requirements.

Both the local device and the remote device in the embodiments of the present application may be terminal devices, which are referred to as cameras in the embodiments of the present application, and are also referred to as user equipment (user equipment, UE), mobile station (mobile station, MS), A mobile terminal (mobile terminal, MT), etc., is a device that provides voice and/or data connectivity to a user. For example, handheld devices, in-vehicle devices, etc. with wireless connectivity. At present, some examples of terminals are: mobile phone (mobile phone), tablet computer, notebook computer, PDA, mobile internet device (MID), wearable device, virtual reality (virtual reality, VR) device, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, and smart grids wireless terminals, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc.

The embodiment of the present application provides a data transmission method for a distributed camera usage scenario, that is, a local device controls one or more remote devices through a network, and camera data collected by the remote device needs to be transmitted back to the local device for use. For example, the mobile phone uses the large-screen camera to make video calls, and the local mobile phone controls the remote mobile phone camera/remote drone camera to achieve multi-device collaborative video recording (Vlog), live broadcast, etc. The specific application scenarios are not limited here.

The technical solutions provided in the embodiments of the present application can be applied to various communication systems, such as: long term evolution (LTE) system, fifth generation (5th generation, 5G) mobile communication system, wireless-fidelity (wireless-fidelity, WiFi) system, future communication system, or a system integrating multiple communication systems, etc., are not limited in the embodiments of the present application. Among them, 5G can also be called new radio (NR).

The technical solutions provided in the embodiments of the present application can be applied to various communication scenarios, for example, can be applied to one or more of the following communication scenarios: enhanced mobile broadband (eMBB), ultra-reliable and low-latency communication (ultra-reliable and low-latency communication) -reliable low-latency communication (URLLC), machine type communication (MTC), massive machine type communication (mMTC), device-to-device (D2D), off-vehicle Vehicle to everything (V2X), vehicle to vehicle (V2V), and Internet of things (IoT), etc.

Referring to FIG. 2, a data transmission method according to an embodiment of the present application includes:

201. Each remote device collects shooting data;

The number of remote devices in this embodiment of the present application is not limited, and this embodiment only takes two remote devices as an example for description, that is, a first remote device and a second remote device.

The first remote device and the second remote device collect shooting data, the shooting data of the first remote device is the data obtained by the camera of the first remote device, and the shooting data of the second remote device is the data of the second remote device. The data acquired by the camera, the data acquired by the camera may be image data, video data, etc., which are not specifically limited here. The cameras of each remote device may include one or more cameras. For example, the camera of the first remote device may include two cameras, a wide-angle camera and a telephoto camera. The specific camera type and number are determined according to the actual application scenario, which is not described here. limited.

202. Each remote device calculates the transmission code rate;

The first remote device and the second remote device calculate their respective transmission bit rates, where the transmission bit rates are the bit rates required by the remote device to send the shooting data to the local device.

There are two types of data streams for shooting data, Stream type and Image type. The Stream type is a continuous stream of camera data, such as a preview stream or a video stream. The Image type is a data stream collected on demand, such as a large image and a thumbnail image when taking a photo. The corresponding data is generated only when the user triggers a photo-taking operation.

1. Stream type bit rate calculation:

Taking into account bandwidth constraints, the captured data can be compressed before being transmitted across devices. In order to ensure the quality of the compressed image, the dynamic bit rate (VBR) is generally used for compression, that is, the bit rate is dynamically adjusted according to the complexity of the image, so as to ensure that the quality of each frame of the compressed camera stream is within the same relatively high level. Therefore, it is necessary to dynamically estimate the stream bit rate of the Stream type camera in real time.

The calculation method of the stream bit rate B of a single-channel Stream type camera can be as follows:

When t<T: B=B _size ;

When t≥T:

That is, when it is less than one unit of calculation time, B takes the default code rate, and when it is greater than one unit of calculation time, the code rate is calculated by the actual data amount in 1 to n units of calculation time.

Among them, t is the duration of the camera stream data that has been output by the data compression module of the remote device; T is the unit calculation time, that is, the I-frame interval time for an integer number of video streams compressed, generally taking an I-frame interval; B is a single-channel Stream. Type camera stream bit rate; B _size is the default transmission bit rate configured in xml, which is related to the resolution of the camera stream (size); D _n is the nth unit of calculation time, the data compression module of the remote device output The amount of data; W _n is the weight occupied by D _n when calculating the code rate, generally W _n-1 ≥ W _n , and n is a positive integer greater than or equal to 1.

2. The calculation method of the stream bit rate B of the Image type camera can be as follows:

Image type camera stream is not a continuous data stream, single frame compression is performed during transmission, and its code stream is calculated as follows:

Among them, B is the bit rate of a single-channel Image type camera stream; D _size is the data volume of the default single-frame image compression configured in xml, which is related to the resolution of the camera stream, that is, size; T _latency is the delay threshold of the camera stream, That is, the maximum delay of the camera stream data acceptable to the service.

For common camera streams, see Table 1. An example of a delay threshold configuration is as follows:

Table 1

流flow	流类型stream type	时延阈值Delay threshold
预览、分析流Preview, analyze flow	STREAMSTREAM	0ms0ms
缩略图Thumbnail	IMAGEIMAGE	0ms0ms
视频通话流video call stream	STREAMSTREAM	100ms100ms
视频录像流video recording stream	STREAMSTREAM	300ms300ms
拍照大图big picture	IMAGEIMAGE	3000ms3000ms

The camera stream delay threshold supports active configuration of business applications to meet different business requirements for real-time performance.

The calculation method of the transmission bit rate of the xth remote device can be:

B _x =∑B _i

Among them, B _x is the transmission code rate of the xth remote device. It can be understood that the value range of x is equal to the number of remote devices; B _i is the transmission code of the i-th stream of the xth remote device. rate, i is a positive integer not less than 1.

203. The local device receives the transmission bit rate of each remote device;

Referring to FIG. 3 , a schematic diagram of the implementation logic is as follows. Data transmission between the local device and the remote device may be in a wired manner or a wireless manner, which is not specifically limited here.

204. The local device configures bandwidth resources for each remote device according to the transmission bit rate;

The local device dynamically allocates the network bandwidth quota of each remote device according to the transmission bit rate of each remote device. The configuration is as follows:

BW _x =BW _total *(B _x /B _total );

Among them, BW _x is the bandwidth quota of the xth remote device; BW _total is the total bandwidth that can be allocated by the local device; Bx is the transmission bit rate of the _xth remote device; B _total is the required amount of all remote devices The total transmission bit rate.

The conditions for triggering the local device to update the bandwidth quota may be: a camera stream stops or a new camera stream starts, or the local device configures the bandwidth resources of each remote device according to a fixed preset period T, and the specific number of times is not required. limit.

It can be understood that steps 202 to 204 may not be executed. For example, when there is only one remote device, the data transmission between the remote device and the local device may occupy all available bandwidth in the network, that is, the local device does not need to configure bandwidth.

205. Each remote device determines the priority ordering of the shooting data;

When multiple camera streams are transmitted concurrently, they are sent in sequence based on the real-time requirements of the camera streams. The priority ordering rule is that the smaller the delay threshold of the captured data, the higher the priority of the captured data, and the higher priority data is sent first. Ensure that camera streams with high real-time requirements are transmitted first, and camera streams with low real-time requirements are sent with a delay, reducing the cross-device delay of camera streams with high real-time requirements, and improving user experience.

A common priority sorting rule may be as follows: the priority is in descending order according to preview data, photo thumbnail data, video call data, video recording data, and photo large image data. It can be understood that this rule is not the only rule, and the specific sorting rule can also be obtained through user settings and other methods.

206. Each remote device sends the shooting data to the local device, and the sending order is sorted based on the priority.

Referring to FIG. 4 , which is an example of data transmission based on priority sorting, preview data is preferentially sent to ensure a user-visible delay experience. The remaining bandwidth is used to send thumbnail data and video data preferentially. It can be seen that the large image data of the photo is divided into small pieces and sent multiple times, so as not to affect the real-time performance of preview, thumbnail and video.

5 is a schematic diagram of dynamic control data transmission in the embodiment of the application, and the specific implementation of dynamic transmission of camera streams of multiple data types (such as including preview data and video recording data) is as follows:

1. Determine the real-time stream (the Stream stream with the smallest delay, generally a preview), and take its frame rate interval T _send as the unit sending time. There can be multiple real-time streams, and the T _send with the largest frame rate interval is taken as the unit sending time, which is generally a preview.

2. The data transmission is controlled according to the unit transmission time T _send , and the amount of data that can be sent within the time T _send does not exceed D _send :

D _send =BW _x *T _send ;

Among them, D _send is the amount of data that can be sent within the unit sending time T _send ; BW _x is the bandwidth quota of the xth remote device; T _send is the unit sending time, generally the preview frame interval (eg 33.3ms).

3. After the shooting data is collected, it is first sent to the respective buffers to be sent. The data sending module fetches and sends data from the corresponding buffers according to the real-time priority of the camera stream. Only when the high-priority camera stream pending buffer is empty, the next-priority camera stream data is sent.

The amount of data that the remote device can send within the time T _send does not exceed D _send . If there is no data in all buffers, it will wait for the next sending time of T _send . The remote device sends data according to the unit sending time T _send . For oversized camera data frames, it will be grouped into small blocks and sent multiple times.

The frame reassembly module of the local device reassembles the camera data into complete camera frames. The stable frame rate module of the local device only controls the stable frame rate of the real-time stream, because the real-time stream is generally sent directly to the display and needs smooth and stable output. The data of other camera streams, after frame reorganization, is directly sent to the consumer end of the camera stream.

Through this embodiment, based on the real-time requirements of camera streams and real-time network bandwidth of different service attributes, the network transmission bandwidth of each cross-device camera and its data streams is dynamically allocated, so as to ensure smooth and stable output of data frames of camera streams, and achieve distribution. The business real-time requirements of each camera stream of the type camera.

The data transmission method in the embodiment of the present application is described above, and the apparatus in the embodiment of the present application is described below. Referring to FIG. 6, the local device may include a processor, a display unit, a transceiver unit (such as a wireless bandwidth (WiFi) unit, one or more of a wired transmission unit), a power supply, a storage unit, a video decoder, etc.; referring to FIG. 7, the remote device may include a processor, a camera unit, a transceiver unit (such as a wireless bandwidth (WiFi) unit, a wired transmission unit) , power supply, video encoder, picture encoder, etc. one or more.

Referring to FIG. 8, an embodiment of the local device in the embodiment of the present application includes:

The receiving unit 801 is used for receiving the transmission code rate sent by the remote device, the transmission code rate is the code rate required by the remote device to send the shooting data to the local device, the shooting data is the data obtained by the camera of the remote device, the remote device The camera consists of one or more local devices and two or more remote devices connected.

The configuration unit 802 is configured to configure bandwidth resources for each remote device according to the transmission code rate.

In this embodiment, the operations performed by each unit are similar to the operations performed by the local device in the previous embodiment shown in FIG. 2 , and are not repeated here.

Referring to FIG. 9, an embodiment of the remote device in the embodiment of the present application includes:

The collection unit 901 is configured to collect shooting data, where the shooting data is data acquired by a camera of a remote device, and the camera of the remote device includes one or more cameras.

The calculation unit 902 is configured to calculate the transmission code rate, so that the local device configures the bandwidth resources of the remote device according to the transmission code rate, and the transmission code rate is the code rate required by the sending unit to send the shooting data to the local device.

The determining unit 903 is configured to determine the priority ordering of the shooting data.

The sending unit 904 is configured to send the shooting data to the local device, and the sending order of the shooting data is sorted based on the priority.

In this embodiment, the operations performed by each unit are similar to the operations performed by the remote device in the previous embodiment shown in FIG. 2 , which are not repeated here.

10 is a schematic structural diagram of a local device provided by an embodiment of the present application. The local device 1000 may include one or more processors 1001 and a memory 1005, and the memory 1005 stores one or more application programs or data.

Among them, the memory 1005 may be volatile storage or persistent storage. A program stored in memory 1005 may include one or more modules, each of which may include a series of instructions to operate on local device 1000 . Furthermore, the processor 1001 may be configured to communicate with the memory 1005 to execute a series of instruction operations in the memory 1005 on the local device 1000 .

The local device 1000 may also include one or more power supplies 1002, one or more wired or wireless network interfaces 1003, one or more input and output interfaces 1004, and/or, one or more operating systems, such as: Microsoft operating system ( Any of Windows), Android operating system (Android), Apple operating system (Mac OS), Yonex operating system (Unix), and Linax operating system (Linux).

The processor 1001 may perform the operations performed by the local device in any of the foregoing embodiments, and details are not described herein again.

11 is a schematic structural diagram of a remote device provided by an embodiment of the present application. The remote device 1100 may include one or more processors 1101 and a memory 1105, and one or more application programs or data are stored in the memory 1105.

Among them, the memory 1105 may be volatile storage or persistent storage. The programs stored in the memory 1105 may include one or more modules, each of which may include a series of instructions to operate on the remote device 1100 . Further, the processor 1101 may be configured to communicate with the memory 1105 to execute a series of instruction operations in the memory 1105 on the remote device 1100 .

The remote device 1100 may also include one or more power supplies 1102, one or more wired or wireless network interfaces 1103, one or more input and output interfaces 1104, and/or, one or more operating systems, such as Microsoft operating systems (Windows), Android operating system (Android), Apple operating system (Mac OS), Yonex operating system (Unix), any of Linax operating system (Linux).

The processor 1101 may perform the operations performed by the remote device in any of the foregoing embodiments, and details are not described herein again.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above may refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

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

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

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.

The integrated unit, if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, and the computer software products are stored in a storage medium , including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, read-only memory), random access memory (RAM, random access memory), magnetic disk or optical disk and other media that can store program codes .

Claims

A data transmission method, comprising:

The remote device collects shooting data, and the shooting data is data obtained by a camera of the remote device, and the camera of the remote device includes one or more cameras;

the remote device determines the priority ordering of the shooting data;

The remote device sends the shooting data to the local device, and the sending order of the shooting data is sorted based on the priority.
The method according to claim 1, wherein the priority ordering rule is that the smaller the delay threshold of the shooting data is, the higher the priority of the shooting data is.
The method according to claim 1, wherein the priority ordering rule is that the priority is sequentially decreased according to preview data, photographing thumbnail data, video call data, video recording data, and photographing large image data.
The method according to any one of claims 1 to 3, wherein the method further comprises:

The remote device calculates a transmission code rate, so that the local device configures bandwidth resources for the remote device according to the transmission code rate, which is the transmission code rate for the remote device to send a picture to the local device. The bit rate required for the data.
A data transmission method, comprising:

The local device receives the transmission bit rate sent by the remote device, and the transmission bit rate is the bit rate required by the remote device to send shooting data to the local device, and the shooting data is obtained by the camera of the remote device The data of the remote device includes one or more cameras, and the local device is connected to two or more remote devices;

The local device configures bandwidth resources for each remote device according to the transmission bit rate.
The method according to claim 5, wherein the configuration method of the local device configuring bandwidth resources for each remote device according to the transmission code rate comprises:

BW x =BW total *(B x /B total );

The BW x is the bandwidth quota of the xth remote device, the xth remote device belongs to any one of the remote devices connected to the local device, and the BW total is allocable to the local device The total bandwidth of , the B x is the transmission code rate of the xth remote device, and the B total is the total transmission code rate required by all remote devices.
A remote device, characterized in that it includes:

a collection unit, configured to collect shooting data, where the shooting data is data obtained by a camera of the remote device, and the camera of the remote device includes one or more cameras;

a determining unit, configured to determine the priority ordering of the shooting data;

A sending unit, configured to send the shooting data to the local device, where the sending order of the shooting data is sorted based on the priority.
The device according to claim 7, wherein the priority ordering rule is that the smaller the delay threshold of the shooting data, the higher the priority of the shooting data.
The device according to claim 7, wherein the priority ordering rule is that the priority is sequentially decreased according to preview data, photographing thumbnail data, video call data, video recording data, and photographing large image data.
The device according to any one of claims 7 to 9, wherein the remote device further comprises:

a calculation unit, configured to calculate a transmission code rate, so that the local device configures bandwidth resources for the remote device according to the transmission code rate, and the transmission code rate is to send the shooting data to the local device by the sending unit the required bit rate.
A local device, characterized in that it includes:

A receiving unit, configured to receive a transmission bit rate sent by a remote device, where the transmission bit rate is a bit rate required by the remote device to send shooting data to the local device, and the shooting data is the remote device The data obtained by the camera, the camera of the remote device includes one or more, and the local device is connected to two or more remote devices;

A configuration unit, configured to configure bandwidth resources for each remote device according to the transmission code rate.
The device according to claim 11, wherein the configuration mode of the configuration unit comprises:

BW x =BW total *(B x /B total );

The BW x is the bandwidth quota of the xth remote device, the xth remote device belongs to any one of the remote devices connected to the local device, and the BW total is allocable to the local device The total bandwidth of , the B x is the transmission code rate of the xth remote device, and the B total is the total transmission code rate required by all remote devices.
A computer storage medium, characterized in that the computer storage medium stores instructions, and when executed on a computer, the instructions cause the computer to execute the method according to any one of claims 1 to 6.
A computer program product, characterized in that, when executed on a computer, the computer program product causes the computer to execute the method according to any one of claims 1 to 6.