CN114039931A - Method, device, equipment and medium for controlling data transmission - Google Patents

Method, device, equipment and medium for controlling data transmission Download PDF

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Publication number
CN114039931A
CN114039931A CN202111254027.XA CN202111254027A CN114039931A CN 114039931 A CN114039931 A CN 114039931A CN 202111254027 A CN202111254027 A CN 202111254027A CN 114039931 A CN114039931 A CN 114039931A
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China
Prior art keywords
time period
flow control
control frame
rate
sending
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CN202111254027.XA
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CN114039931B (en
Inventor
张建新
马东星
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Zhejiang Dahua Technology Co Ltd
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Zhejiang Dahua Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/26—Flow control; Congestion control using explicit feedback to the source, e.g. choke packets
    • H04L47/263—Rate modification at the source after receiving feedback
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H04N5/77—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television camera

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

The application relates to the technical field of security monitoring, in particular to a method, a device, equipment and a medium for controlling data transmission, which are used for improving the data transmission efficiency. The method comprises the following steps: receiving a first type of flow control frame for the Nth time, wherein N is an integer greater than or equal to 1, and the first type of flow control frame is sent after congestion occurs in the video equipment; determining a second sending rate in a second time period based on a first sending rate in a first time period, wherein the second time period is a time period from receiving the first type of flow control frame N times to receiving the first type of flow control frame N +1 times, the first time period is a time period before the second time period, and sending target data to the video recording device, and the rate of sending the target data is less than or equal to the second sending rate.

Description

Method, device, equipment and medium for controlling data transmission
Technical Field
The application relates to the technical field of security monitoring, in particular to a method, a device, equipment and a medium for controlling data transmission.
Background
The camera equipment and the video equipment have important significance in the technical field of security monitoring, the camera equipment can collect data such as images or videos in a monitoring area in real time, the video equipment is in communication connection with the camera equipment, and high-resolution video monitoring pictures can be provided for clients according to the videos sent by the camera equipment. The video recording equipment can be accessed to a plurality of camera equipment, and when the plurality of camera equipment simultaneously send data to the video recording equipment, congestion is easily caused in the video recording equipment.
In the prior art, when congestion occurs in the video recording device, the video recording device may send a flow control frame to the image pickup device to instruct the image pickup device to suspend sending data, and when the congestion in the video recording device is relieved, the video recording device may send the flow control frame to the image pickup device to instruct the image pickup device to continue sending data.
However, this method of suspending data transmission makes the image pickup apparatus unable to transmit data to the image recording apparatus for a while, resulting in a decrease in overall data transmission efficiency.
Disclosure of Invention
The embodiment of the application provides a method, a device, equipment and a medium for controlling data transmission, which are used for improving the data transmission efficiency.
In a first aspect, an embodiment of the present application provides a method for controlling data transmission, including:
receiving a first type of flow control frame for the Nth time, wherein N is an integer greater than or equal to 1, and the first type of flow control frame is sent after congestion occurs in the video equipment;
determining a second sending rate in a second time period based on a first sending rate in a first time period, wherein the second time period is a time period from receiving the first type of flow control frame for the Nth time to receiving the first type of flow control frame for the (N + 1) th time, and the first time period is a time period before the second time period;
and sending target data to the video recording equipment according to the second sending rate, wherein the rate of sending the target data is less than or equal to the second sending rate.
In the embodiment of the application, a first type of flow control frame sent after congestion occurs in the video equipment is received, the congestion condition of the video equipment can be timely and accurately obtained through the first type of flow control frame, a second sending rate in a second time period is determined according to a first sending rate in the first time period before the second time period, and the rate of sending target data to the video equipment is smaller than the second sending rate, which is equivalent to limiting the maximum sending rate in the second time period, and the video equipment can still send data to the video equipment.
In one possible embodiment, the method is applied to an image pickup apparatus, and determining a second transmission rate in a second period based on a first transmission rate in a first period comprises:
if N is equal to 1, acquiring a first sending rate in a first time period, wherein the first time period is a time period from the starting of the camera to the 1 st time of receiving the first class flow control frame;
and determining a second sending rate in a second time period based on the first sending rate and a preset weight.
In the embodiment of the application, when the image pickup apparatus receives the first-class flow control frame for the first time, a time period from the startup of the image pickup apparatus to the 1 st time of receiving the first-class flow control frame is taken as a first time period, and a second sending rate in a second time period is determined based on the first sending rate and a preset weight, which is equivalent to providing a way of initializing the sending rate.
In one possible embodiment, determining a second transmission rate for a second time period based on a first transmission rate for a first time period comprises:
if N is larger than 1, acquiring a first sending rate in a first time period, wherein the first time period is a time period from receiving the first class flow control frame for the N-1 th time to receiving the first class flow control frame for the N-th time;
acquiring a third sending rate in a third time period, wherein the third time period is a time period from receiving the first type of flow control frame for the N-1 st time to receiving a second type of flow control frame for the N-1 st time, and the second type of flow control frame is sent after congestion in the video equipment is relieved;
acquiring a fourth sending rate in a fourth time period, wherein the fourth time period is a time period from receiving the second type of flow control frame for the N-1 st time to receiving the first type of flow control frame for the N-th time;
determining a second transmission rate for a second time period based on the first transmission rate, the third transmission rate, and the fourth transmission rate.
In the embodiment of the application, when the image pickup apparatus does not receive the first-class flow control frame for the first time, the sending rates in the multiple time periods are respectively obtained, and the second sending rate in the second time period can be more accurately determined by combining the sending rates in the multiple time periods.
In one possible embodiment, determining a second transmission rate for a second time period based on the first transmission rate, the third transmission rate, and the fourth transmission rate comprises:
determining weights corresponding to the first sending rate, the third sending rate and the fourth sending rate respectively based on equipment information and/or the size of the target data;
and performing weighted summation on the first sending rate, the third sending rate and the fourth sending rate based on the respective corresponding weights to determine a second sending rate in a second time period.
In this embodiment of the application, the image capturing apparatus may determine, according to the size of the apparatus information and/or the target data, a weight corresponding to the transmission rate in each time period, further perform weighted summation on the transmission rate in each time period, and determine the second transmission rate in the second time period.
In a possible embodiment, sending target data to the video recording device includes:
determining a compensation value based on the first sending rate and the second sending rate, wherein the compensation value is used for compensating an initial congestion window value of a congestion window of other layers for sending the target data;
determining the sum of the compensation value and the initial congestion window value as a compensated congestion window value;
controlling the other layers to send the target data to the network layer according to the congestion window corresponding to the compensated congestion window value;
controlling the network layer to send the target data to a data link layer;
and controlling the data link layer to send the target data to the video recording equipment.
In the embodiment of the application, the compensation value is determined based on the first sending rate and the second sending rate, the initial congestion window value of the congestion window for sending the target data by the transmission layer is compensated, the congestion window value can be increased, the influence of the congestion windows of other layers on the sending rate is reduced, the rate for sending the target data to the network layer by the other layers is increased, the rate for sending the target data to the video recording device by the video recording device is only determined by the data link layer, so that the link bandwidth resource is fully utilized, and the overall data transmission efficiency is improved.
In a second aspect, an embodiment of the present application provides an apparatus for controlling data transmission, including:
the receiving module is used for receiving a first type of flow control frame for the Nth time, wherein N is an integer greater than or equal to 1, and the first type of flow control frame is sent after congestion occurs in the video equipment;
a determining module, configured to determine a second sending rate in a second time period based on a first sending rate in a first time period, where the second time period is a time period from receiving the first class flow control frame N times to receiving the first class flow control frame N +1 times, and the first time period is a time period before the second time period;
and the sending module is used for sending target data to the video equipment, wherein the rate of sending the target data is less than or equal to the second sending rate.
In a possible embodiment, the apparatus is disposed in an image capturing device, and further includes an obtaining module;
the acquisition module is configured to acquire a first sending rate within a first time period if N is 1, where the first time period is a time period from startup to 1 st time of receiving the first class flow control frame by the image pickup apparatus;
the determining module is specifically configured to determine a second sending rate in a second time period based on the first sending rate and a preset weight.
In a possible embodiment, the obtaining module is further configured to:
if N is larger than 1, acquiring a first sending rate in a first time period, wherein the first time period is a time period from receiving the first class flow control frame for the N-1 th time to receiving the first class flow control frame for the N-th time;
acquiring a third sending rate in a third time period, wherein the third time period is a time period from receiving the first type of flow control frame for the N-1 st time to receiving a second type of flow control frame for the N-1 st time, and the second type of flow control frame is sent after congestion in the video equipment is relieved;
acquiring a fourth sending rate in a fourth time period, wherein the fourth time period is a time period from receiving the second type of flow control frame for the N-1 st time to receiving the first type of flow control frame for the N-th time;
the determining module is specifically configured to determine a second sending rate in a second time period based on the first sending rate, the third sending rate, and the fourth sending rate.
In a possible embodiment, the determining module is specifically configured to:
determining weights corresponding to the first sending rate, the third sending rate and the fourth sending rate respectively based on equipment information and/or the size of the target data;
and performing weighted summation on the first sending rate, the third sending rate and the fourth sending rate based on the respective corresponding weights to determine a second sending rate in a second time period.
In a possible embodiment, the determining module is further configured to:
determining a compensation value based on the first sending rate and the second sending rate, wherein the compensation value is used for compensating an initial congestion window value of a congestion window of other layers for sending the target data;
determining the sum of the compensation value and the initial congestion window value as a compensated congestion window value;
the sending module is specifically configured to:
controlling the other layers to send the target data to the network layer according to the congestion window corresponding to the compensated congestion window value;
controlling the network layer to send the target data to a data link layer;
and controlling the data link layer to send the target data to the video recording equipment.
In a third aspect, an embodiment of the present application provides an apparatus for controlling data transmission, including:
at least one processor, and
a memory communicatively coupled to the at least one processor;
wherein the memory stores instructions executable by the at least one processor, the at least one processor implementing the method of any one of the first aspect by executing the instructions stored by the memory.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium storing computer instructions that, when executed on a computer, cause the computer to perform the method according to any one of the first aspect.
Drawings
Fig. 1 is an application scenario diagram of a method for controlling data transmission according to an embodiment of the present application;
fig. 2 is a flowchart of a method for controlling data transmission according to an embodiment of the present application;
fig. 3 is a schematic diagram of each time period in a second case provided in the embodiment of the present application;
fig. 4 is a block diagram of an apparatus for controlling data transmission according to an embodiment of the present disclosure;
fig. 5 is a block diagram of an apparatus for controlling data transmission according to an embodiment of the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The embodiments and features of the embodiments of the present invention may be arbitrarily combined with each other without conflict. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
The terms "first" and "second" in the description and claims of the present invention and the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the term "comprises" and any variations thereof, which are intended to cover non-exclusive protection. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
In the embodiment of the present invention, the "plurality" may mean at least two, for example, two, three, or more, and the embodiment of the present invention is not limited.
In order to improve data transmission efficiency, embodiments of the present application provide a method for controlling data transmission. The method may be performed by an image capture device. The image pickup apparatus may be implemented by a terminal having a photographing function such as a personal computer, a video camera, an embedded apparatus such as a camera, or the like, or a server such as a physical server or a virtual server, or the like.
An application scenario diagram of the method for controlling data transmission is described below. Fig. 1 is a schematic view of an application scenario of a method for controlling data transmission according to an embodiment of the present application. The application scenario includes: an image pickup apparatus 110 and a video recording apparatus 120. The recording device 120 may be a device having a recording function, such as a personal computer, a video recorder, or the like. The image pickup apparatus 110 and the image recording apparatus 120 can communicate with each other.
After the image capturing device 110 collects data, the data is sent to the video recording device 120, the video recording device 120 processes the received data, and the image capturing device 110 may control the rate of sending data to the video recording device 120. Where the data may be video, images, sound, etc., the process of how the camera device 110 specifically controls the rate will be described below.
It should be noted that fig. 1 exemplifies one image pickup apparatus 110, and does not actually limit the number of image pickup apparatuses 110. In other words, one video recording device 120 may access one or more image capturing devices 110, and a switching chip is integrated in the video recording device 120, where the switching chip includes a plurality of ports, and each port may be connected to one image capturing device 110.
After the application scenario diagram of the method for controlling data transmission is introduced, data transmission between the image capture device 110 and the video recording device 120 is involved. Communication between different devices is achieved through a network model, and therefore data transmission between the image capture device 110 and the image recording device 120 involves transmission of data between layers of the network model. The network model typically includes an application layer, a transport layer, a network layer, a data link layer, and a Physical (PHY) layer. Common protocols in the transport layer include a Transmission Control Protocol (TCP) (transmission Control protocol) and a User Datagram Protocol (UDP) (user Datagram protocol), and thus the transport layer may also be referred to as a TCP/UDP layer. The network layer may also be referred to as an Internet Protocol (IP) layer or a Protocol stack IP layer. The data Link layer includes a Medium Access Control (MAC) layer and a Logical Link Control (LLC) layer, and for example, a network card of the image pickup apparatus operates in the MAC layer.
Based on the network model introduced above and the application scenario discussed in fig. 1, a method for controlling data transmission performed by the image capturing apparatus is described below as an example. Fig. 2 is a flowchart of a method for controlling data transmission according to an embodiment of the present disclosure.
S201, receiving the first-class flow control frame for the Nth time.
When one video recording device is connected to a plurality of image pickup devices, the video recording device can receive data sent by the plurality of image pickup devices at the same time, which easily causes congestion in a switching chip of the video recording device. The switching chips in different video devices may come from different manufacturers, and the switching chips of different manufacturers determine congestion and a manner of congestion relief differently, which is described as an example below.
In the first mode, congestion or congestion relief is determined according to the number of packets buffered inside the video recording device.
And if the number of the data packets cached in the video equipment is greater than or equal to a preset threshold value, determining that the switching chip of the video equipment is congested. After the congestion of the switching chip of the video equipment is determined, if the number of the data packets cached in the video equipment is smaller than a preset threshold value, the congestion of the switching chip of the video equipment is determined to be relieved.
In the second mode, congestion or congestion relief is determined according to whether packet loss occurs inside the video recording device.
And if the packet loss occurs in the video equipment, determining that the switching chip of the video equipment is congested. After the congestion of the switching chip of the video equipment is determined, if the packet loss does not occur in the video equipment within the preset time period, the congestion of the switching chip of the video equipment is determined to be relieved.
When congestion occurs or congestion is relieved in the video recording device, the video recording device may send a flow control frame to the image pickup device, where the flow control frame includes a first type flow control frame and a second type flow control frame, which are described in the following examples.
1. A first type of flow control frame.
The first type of flow control frame is sent after congestion occurs in the video equipment, the first type of flow control frame is, for example, an XOFF flow control frame, and a pause time field of the flow control frame is greater than 0.
2. And a second type of flow control frame.
The second type of flow control frame is sent after congestion in the video equipment is relieved, the second type of flow control frame is, for example, an XON flow control frame, and a pause time field of the flow control frame is equal to 0.
As an embodiment, if the switching chip of the video recording device only accesses one camera device, the video recording device may directly send the first-type flow control frame and the second-type flow control frame to the camera device.
As an embodiment, if a switch chip of a video device is connected to multiple video capture devices, the switch chip of the video device may determine, according to a congestion condition of the switch chip, a port for sending a first-type flow control frame, and determine a port for sending the first-type flow control frame as a port for sending a second-type flow control frame. For example, when congestion occurs in a switch chip of a video recording device, and a first port of the switch chip is receiving data at this time, a first type of flow control frame is sent to the image pickup device corresponding to the first port, and when the congestion of the switch chip of the video recording device is relieved, a second type of flow control frame is sent to the image pickup device corresponding to the first port.
After receiving the stream control frame sent by the video recording device for the nth time, the camera device determines the type of the stream control frame according to the value of the pause time field of the stream control frame, for example, if the pause time field of the stream control frame is 1, the stream control frame is determined to be a first type stream control frame, and if the pause time field of the stream control frame is 0, the stream control frame is determined to be a second type stream control frame. And when the N is greater than 1, the camera device does not receive the first-class flow control frame for the first time.
It should be noted that, in a normal situation, the video recording apparatus sends the first type of flow control frame and the second type of flow control frame to the image pickup apparatus at intervals, for example, when congestion occurs in the video recording apparatus, the first type of flow control frame is sent first, after the congestion is relieved, the second type of flow control frame is sent, and when congestion occurs again, the first type of flow control frame is sent next. However, there may be a case that the video device does not send the first type of flow control frame and the second type of flow control frame at intervals, for example, when the video device is congested, the first type of flow control frame is sent first, the video device may not receive the first type of flow control frame, and at this time, the video device may continuously send the first type of flow control frame to the video device for multiple times.
Therefore, the nth time, the nth-1 time, and the nth-2 time in this embodiment may be understood as that the image capturing apparatus receives the adjacent first-type flow control frame or the second-type flow control frame, for example, the image capturing apparatus receives the first-type flow control frame 1, the second-type flow control frame 1, the first-type flow control frame 2, the second-type flow control frame 2, and the first-type flow control frame 3 sequentially, that is, the image capturing apparatus receives the adjacent first-type flow control frame 1, the first-type flow control frame 2, and the third first-type flow control frame 3, and the image capturing apparatus receives the adjacent second-type flow control frame 1 and the second-type flow control frame 2. The nth time, the nth-1 time, and the nth-2 time in this embodiment may also be understood as that the camera device receives a first-type flow control frame or a second-type flow control frame that is not adjacent, for example, the first-type flow control frame 2 is lost, and the camera device receives the first-type flow control frame 1 and the first-type flow control frame 3 that are not adjacent.
S202, determining a second sending rate in a second time period based on a first sending rate in a first time period.
In the prior art, both the video equipment and the camera equipment start a flow control function, the camera equipment stops sending data when receiving a first type of flow control frame, and continues sending data when receiving a second type of flow control frame. In order to avoid the camera device entering a simple stop mode, in the embodiment of the application, the physical layers of the video device and the camera device both notify the flow control function, but the flow control function of the camera device is closed, and a software mode is adopted to process the flow control frame.
After receiving the first class flow control frame, the image capturing apparatus may determine a second transmission rate in a second time period based on a first transmission rate in the first time period.
The second time period is a time period from the nth reception of the first-type flow control frame to the N +1 th reception of the first-type flow control frame, and the first time period is a time period before the second time period, specifically, the first time period may be a time period from the startup of the image pickup apparatus to the nth reception of the first-type flow control frame, or may be a time period from the N-1 st reception of the first-type flow control frame to the nth reception of the first-type flow control frame, or may be a time period within a preset time period before the nth reception of the first-type flow control frame, for example, the preset time period is 6s, the nth reception of the first-type flow control frame is 10s, and the first time period is a time period from 4s to 10 s.
The first transmission rate may be an average transmission rate, a maximum transmission rate, or a minimum transmission rate in the first time period, may also be an average transmission rate, a maximum transmission rate, or a minimum transmission rate in a preset time period of the first time period, and may also be an average transmission rate, a maximum transmission rate, or a minimum transmission rate at a plurality of preset time points of the first time period.
Specifically, the image capturing apparatus may acquire a rate at which a data packet is transmitted per second in a first time period, acquire a rate at which a data packet is transmitted per second in a preset time period of the first time period, acquire rates at which a plurality of preset time points of the first time period transmit a data packet per second, obtain a plurality of transmission rates, and use an average transmission rate, that is, an average value of the plurality of transmission rates, as the first transmission rate, or use a maximum transmission rate, that is, a maximum value of the plurality of transmission rates, as the first transmission rate, or use a minimum transmission rate, that is, a minimum value of the plurality of transmission rates, as the first transmission rate.
For example, the first time period is 0s to 5s, or the first time period is 0s to 10s, and the preset time period of the first time period is 3s to 7s, or the first time period is 0s to 10s, and the preset time points of the first time period are 2 nd, 4 th, 6 th, 8 th, and 10 th. In these three cases, the rate of transmitting a packet in 5s is 1Mbps, 2Mbps, 3Mbps, 4Mbps, and 5Mbps, the average transmission rate is (1+2+3+4+5)/5 — 3Mbps, the maximum transmission rate is 5Mbps, and the minimum transmission rate is 1 Mbps.
The second transmission rate is the maximum transmission rate in the second time period, in other words, the actual transmission rate in the second time period cannot exceed the second transmission rate. It should be noted that the transmission rate in the embodiment of the present application may also be understood as a bandwidth, that is, the transmission rate of 10Mbps may also be understood as a bandwidth of 10M.
The manner of determining the second transmission rate based on the first transmission rate is different according to whether the first-class flow control frame is received by the image capturing apparatus for the first time, and an example is described below.
Case one, N equals 1.
If N is equal to 1, it is determined that the image capturing apparatus receives the first-class flow control frame for the first time, the first time period is a time period from the startup of the image capturing apparatus to the 1 st reception of the first-class flow control frame, and the image capturing apparatus may determine a second sending rate in the second time period based on a first sending rate in the first time period and a preset weight.
The camera device may have a preset weight, where the preset weight may be obtained by the camera device through multiple tests in advance, or may be sent to the camera device after other devices are obtained through multiple tests in advance, and the other devices are devices other than the camera device, for example, a video device connected to the camera device.
It is referred to how the image capturing apparatus determines the second transmission rate based on the first transmission rate and a preset weight, and examples are described below.
In the first case, the image capturing apparatus takes a product of the first transmission rate and a preset weight as the second transmission rate, and a value range of the preset weight is (0, 1).
For example, the formula for determining the second transmission rate is as follows:
B＝α1×B0
wherein B represents a second transmission rate, B0Indicating a first transmission rate, alpha1Represents a predetermined weight value, 0<α1≤1。
In the second case of the first case, the camera device uses the ratio of the first sending rate to the preset weight as the second sending rate, and the value of the preset weight is greater than or equal to 1.
For example, the formula for determining the second transmission rate is as follows:
B＝B0/α2
wherein B represents a second transmission rate, B0Indicating a first transmission rate, alpha2Representing a predetermined weight, α2≥1。
It should be noted that, when the preset weight is 1, it indicates that the image capturing apparatus directly uses the first transmission rate in the first time period as the second transmission rate in the second time period.
In case two, N is greater than 1.
If N is greater than 1, it is described that the image capturing apparatus further receives a first-type flow control frame and a second-type flow control frame before receiving the first-type flow control frame this time, where the first time period is a time period from receiving the first-type flow control frame N-1 times to receiving the first-type flow control frame N times, and the image capturing apparatus may also determine a second sending rate in the second time period based on a first sending rate and a preset weight in the first time period.
Or the image pickup apparatus may divide the first period into a plurality of periods, and determine the second transmission rate in the second period from a plurality of transmission rates in the plurality of periods. It should be noted that in the embodiment of the present application, when the video recording apparatus sends the first-type flow control frame and the second-type flow control frame to the image pickup apparatus at intervals, and the image pickup apparatus also receives the first-type flow control frame and the second-type flow control frame at intervals, in other words, the image pickup apparatus receives the second-type flow control frame in the first time period.
Specifically, the image capturing apparatus may acquire a first transmission rate in a first period, a third transmission rate in a third period, and a fourth transmission rate in a fourth period, respectively. For the meaning of the first sending rate, please refer to the content discussed above, and the description is omitted here.
The third time period is a time period from the N-1 th time of receiving the first-type flow control frame to the N-1 th time of receiving the second-type flow control frame, and the third sending rate may be an average sending rate, a maximum sending rate, or a minimum sending rate in the third time period, may also be an average sending rate, a maximum sending rate, or a minimum sending rate in a preset time period of the third time period, and may also be an average sending rate, a maximum sending rate, or a minimum sending rate at a plurality of preset time points of the third time period.
The fourth time period is the time period from the receiving of the second type of flow control frame at the N-1 st time to the receiving of the first type of flow control frame at the N-th time. The fourth transmission rate may be an average transmission rate, a maximum transmission rate, or a minimum transmission rate in the fourth time period, an average transmission rate, a maximum transmission rate, or a minimum transmission rate in a preset time period in the fourth time period, or an average transmission rate, a maximum transmission rate, or a minimum transmission rate at a plurality of preset time points in the fourth time period.
Further, after the image capturing apparatus acquires the first transmission rate, the third transmission rate, and the fourth transmission rate, a second transmission rate in the second period may be determined based on the first transmission rate, the third transmission rate, and the fourth transmission rate, which will be described as an example below.
In the first case of the second case, the image pickup apparatus determines the maximum value among the first transmission rate, the third transmission rate, and the fourth transmission rate as the second transmission rate.
For example, the formula for determining the second transmission rate is as follows:
B＝max(B0+B1+B2)
wherein B represents a second transmission rate, B0Indicating a first transmission rate, B1Indicating a third transmission rate, B2Denotes a fourth transmission rate, and max () denotes taking the maximum value.
In the second case, the image pickup apparatus determines an average value of the first transmission rate, the third transmission rate, and the fourth transmission rate as the second transmission rate.
For example, the formula for determining the second transmission rate is as follows:
Figure BDA0003323423600000131
wherein B represents a second transmission rate, B0Represents the firstSending rate, B1Indicating a third transmission rate, B2Indicating the fourth transmission rate.
In the third case of the second case, the image pickup apparatus performs weighted summation of the first transmission rate, the third transmission rate, and the fourth transmission rate, and determines the second transmission rate in the second period.
As an embodiment, the image capturing apparatus may determine, based on the configuration information, weights to which the first transmission rate, the third transmission rate, and the fourth transmission rate correspond, respectively. The configuration information includes device information and/or size of target data, the device information includes information of the image pickup device and information of the video recording device, the information of the video recording device is, for example, parameter information of the exchange chip, and the information of the image pickup device is, for example, the number of image pickup devices accessed by the video recording device. The size of the target data includes the size of video transmitted by the image pickup apparatus, the size of the target data includes the frame rate of the video, for example, the video includes 30 frames of pictures, and the resolution of the video, for example, the size of each frame of pictures is 100 kB.
As an embodiment, after determining the weights corresponding to the first sending rate, the third sending rate, and the fourth sending rate based on the configuration information, the other devices may send the weights corresponding to the first sending rate, the third sending rate, and the fourth sending rate to the image capturing device, and the meanings of the other devices and the configuration information refer to the contents discussed above and are not described herein again.
It should be noted that the weights corresponding to the first transmission rate, the third transmission rate, and the fourth transmission rate may be the same or different.
Further, after acquiring the respective weights corresponding to the respective sending rates, the camera device performs weighted summation on the first sending rate, the third sending rate and the fourth sending rate based on the respective corresponding weights, and determines a second sending rate in a second time period.
For example, the formula for determining the second transmission rate is as follows:
B＝α×B0+β×B1+γ×B2
where B denotes a second transmission rate,B0indicating a first transmission rate, B1Indicating a third transmission rate, B2Represents the fourth transmission rate, α represents a weight corresponding to the first transmission rate, β represents a weight corresponding to the third transmission rate, and γ represents a weight corresponding to the fourth transmission rate. γ may be the square of β, i.e., γ ═ β2。
S203, sending the target data to the video recording equipment.
After the image capturing apparatus determines a second sending rate in a second time period based on a first sending rate in a first time period, the image capturing apparatus may send target data to the image capturing apparatus, where the target data may be data such as images and videos captured by the image capturing apparatus, and the sending rate of the target data is less than or equal to the second sending rate, that is, the second sending rate is the maximum sending rate in the second time period, for example, the second sending rate is 10Mbps, if a data packet that can be actually sent by the image capturing apparatus is 5Mb, the data is sent at 5Mbps, and if a data packet that can be actually sent by the image capturing apparatus is 11Mb, the data can only be sent at 10 Mbps.
It should be noted that, in this embodiment of the present application, the maximum sending rate in the first time period is determined based on a fifth sending rate in a fifth time period, where the fifth time period is a time period from the N-2 th time of receiving the first-type flow control frame to the N-1 th time of receiving the first-type flow control frame. To more clearly illustrate the relationship between the time periods, please refer to fig. 3, which is a schematic diagram of the time periods provided in the embodiment of the present application. Wherein the first time period includes a third time period and a fourth time period, the fifth time period precedes the first time period, and the first time period precedes the second time period.
The fifth transmission rate may be an average transmission rate, a maximum transmission rate, or a minimum transmission rate in the fifth time period, may also be an average transmission rate, a maximum transmission rate, or a minimum transmission rate in a preset time period of the fifth time period, and may also be an average transmission rate, a maximum transmission rate, or a minimum transmission rate at a plurality of preset time points of the fifth time period. For a manner in which the image capturing apparatus determines the maximum transmission rate in the first time period based on the fifth transmission rate, please refer to the content of the manner in which the second transmission rate is determined based on the first transmission rate, i.e., S202, which is discussed in the foregoing, and is not described herein again.
In this embodiment, the image capturing apparatus may control the network layer to send the target data to the data link layer, and control the data link layer to send the target data to the image recording apparatus at a rate that cannot exceed the second sending rate when the data link layer sends the target data to the image recording apparatus.
It should be noted that the first transmission rate, the third transmission rate, and the fourth transmission rate may specifically refer to a rate at which the image pickup apparatus transmits data from the data link layer to the image recording apparatus.
In the embodiment of the application, the rate of sending the target data to the network layer by the upper layer service is not influenced, only the rate of sending the target data to the data link layer by the network layer is limited, and the rate of sending the target data to the video recording device by the camera device is only determined by the MAC layer of the data link layer, so that link bandwidth resources are fully utilized, and the data transmission efficiency is improved.
As an embodiment, when congestion occurs, a congestion window for other layers to send target data is reduced, so as to reduce a rate of sending data to the network layer by other layers, thereby affecting a rate of sending data to the data link layer by the network layer. Therefore, in the embodiment of the present application, the image capturing apparatus may compensate the initial congestion window value of the congestion window for the other layer to send the target data, and control the other layer to send the target data to the network layer according to the congestion window corresponding to the compensated congestion window value, so as to reduce the influence of the upper layer on the second sending rate.
Specifically, the other layer is an application layer or a transport layer above a network layer in the network model, and after determining a second sending rate in a second time period based on a first sending rate in a first time period, the image capturing apparatus may determine a compensation value based on the first sending rate and the second sending rate, where the first sending rate is positively correlated with the compensation value, the second sending rate is also positively correlated with the compensation value, the compensation value is used to compensate an initial congestion window value of a congestion window for the other layer to send target data, and the initial congestion window value is an initial window value of slow start of each TCP link and is specified by an IEEE802.3 protocol.
For example, the image pickup apparatus prestores a correspondence relationship among a first transmission rate, a second transmission rate, and a compensation value, and determines a compensation value to which the first transmission rate and the second transmission rate correspond in common from the correspondence relationship.
Further, the camera device determines the sum of the compensation value and the initial congestion window value as a compensated congestion window value, controls other layers to send target data to the network layer according to the congestion window corresponding to the compensated congestion window value, controls the network layer to send the target data to the data link layer, and controls the data link layer to send the target data to the video recording device.
In the embodiment of the application, by compensating the congestion windows of other layers, the sending rate between the other layers and the network layer can be improved, the influence of the upper layer on the second sending rate is reduced, the fluctuation of the congestion windows of the other layers caused by congestion is reduced, and the reduction of the overall transmission efficiency caused by the fluctuation of the congestion windows is avoided.
As an example, the image capturing apparatus in the embodiment in fig. 2 is, for example, the image capturing apparatus 110 in fig. 1, and the image recording apparatus is, for example, the image recording apparatus 120 in fig. 1.
Based on the same inventive concept, an embodiment of the present application provides an apparatus for controlling data transmission, which is disposed in the image capturing device 110 discussed above, and with reference to fig. 4, the apparatus includes:
a receiving module 401, configured to receive a first type of flow control frame N times, where N is an integer greater than or equal to 1, and the first type of flow control frame is sent after congestion occurs inside the video apparatus;
a determining module 402, configured to determine a second sending rate in a second time period based on a first sending rate in a first time period, where the second time period is a time period from receiving the first class flow control frame N times to receiving the first class flow control frame N +1 times, and the first time period is a time period before the second time period;
a sending module 403, configured to send target data to the video recording device, where a rate of sending the target data is less than or equal to the second sending rate.
In a possible embodiment, the apparatus is provided in an image capturing device, and the apparatus further includes an obtaining module 404;
the obtaining module 404 is configured to obtain a first sending rate in a first time period if N is 1, where the first time period is a time period from startup to 1 st time of receiving the first class flow control frame by the image capturing apparatus;
the determining module 402 is specifically configured to determine a second sending rate in a second time period based on the first sending rate and a preset weight.
In a possible embodiment, the obtaining module 404 is further configured to:
if N is larger than 1, acquiring a first sending rate in a first time period, wherein the first time period is a time period from receiving the first class flow control frame for the Nth time after receiving the first class flow control frame for the N-1 th time;
acquiring a third sending rate in a third time period, wherein the third time period is a time period from receiving the first type of flow control frame for the N-1 th time to receiving the second type of flow control frame for the N-1 th time, and the second type of flow control frame is sent after congestion in the video equipment is relieved;
acquiring a fourth sending rate in a fourth time period, wherein the fourth time period is a time period from receiving the second type of flow control frame for the N-1 st time to receiving the first type of flow control frame for the N-th time;
the determining module is specifically configured to determine a second sending rate in a second time period based on the first sending rate, the third sending rate, and the fourth sending rate.
In a possible embodiment, the determining module 402 is specifically configured to:
determining weights corresponding to the first sending rate, the third sending rate and the fourth sending rate respectively based on the size of the equipment information and/or the target data;
and performing weighted summation on the first sending rate, the third sending rate and the fourth sending rate based on the respective corresponding weights, and determining a second sending rate in a second time period.
In a possible embodiment, the determining module 402 is further configured to:
determining a compensation value based on the first sending rate and the second sending rate, wherein the compensation value is used for compensating an initial congestion window value of a congestion window of other layers for sending target data;
determining the sum of the compensation value and the initial congestion window value as a compensated congestion window value;
the sending module 403 is specifically configured to:
controlling other layers to send target data to the network layer according to the congestion window corresponding to the compensated congestion window value;
the control network layer sends target data to the data link layer;
and controlling the data link layer to send the target data to the video recording equipment.
As an embodiment, the apparatus for controlling data transmission discussed in fig. 4 may implement any one of the methods for controlling data transmission discussed above, and is not described herein again.
Based on the same inventive concept, an embodiment of the present application provides an apparatus for controlling data transmission, which can implement the functions of the image capturing apparatus discussed above, with reference to fig. 5, and the apparatus includes:
at least one processor 501, and
a memory 502 communicatively coupled to the at least one processor 501;
wherein the memory 502 stores instructions executable by the at least one processor 501, the at least one processor 501 implementing any of the methods of controlling data transfer as previously discussed by executing the instructions stored by the memory 502.
The processor 501 may be a Central Processing Unit (CPU), or one or more combinations of a digital processing unit, an image processor, and the like. The memory 502 may be a volatile memory (volatile memory), such as a random-access memory (RAM); the memory 502 may also be a non-volatile memory (non-volatile memory) such as, but not limited to, a read-only memory (rom), a flash memory (flash memory), a Hard Disk Drive (HDD) or a solid-state drive (SSD), or the memory 502 may be any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 502 may be a combination of the above memories.
As an example, the processor 501 in fig. 5 may implement any one of the methods for controlling data transmission discussed above, and the processor 501 may also implement the functions of the apparatus for controlling data transmission discussed above in fig. 4.
Based on the same inventive concept, embodiments of the present application provide a computer-readable storage medium storing computer instructions that, when executed on a computer, cause the computer to perform any one of the methods of controlling data transmission as discussed above.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (10)

1. A method of controlling data transmission, comprising:
receiving a first type of flow control frame for the Nth time, wherein N is an integer greater than or equal to 1, and the first type of flow control frame is sent after congestion occurs in the video equipment;
determining a second sending rate in a second time period based on a first sending rate in a first time period, wherein the second time period is a time period from receiving the first class flow control frame N times to receiving the first class flow control frame N +1 times, and the first time period is a time period before the second time period;
and sending target data to the video recording equipment, wherein the rate of sending the target data is less than or equal to the second sending rate.
2. The method of claim 1, applied to an image pickup apparatus, wherein determining a second transmission rate in a second period based on a first transmission rate in a first period comprises:
if N is equal to 1, acquiring a first sending rate in a first time period, wherein the first time period is a time period from the starting of the camera to the 1 st time of receiving the first class flow control frame;
and determining a second sending rate in a second time period based on the first sending rate and a preset weight.
3. The method of claim 1, wherein determining a second transmission rate for a second time period based on a first transmission rate for a first time period comprises:
if N is larger than 1, acquiring a first sending rate in a first time period, wherein the first time period is a time period from receiving the first class flow control frame for the N-1 th time to receiving the first class flow control frame for the N-th time;
acquiring a third sending rate in a third time period, wherein the third time period is a time period from receiving the first type of flow control frame for the N-1 st time to receiving a second type of flow control frame for the N-1 st time, and the second type of flow control frame is sent after congestion in the video equipment is relieved;
acquiring a fourth sending rate in a fourth time period, wherein the fourth time period is a time period from receiving the second type of flow control frame for the N-1 st time to receiving the first type of flow control frame for the N-th time;
determining a second transmission rate for a second time period based on the first transmission rate, the third transmission rate, and the fourth transmission rate.
4. The method of claim 3, wherein determining a second transmission rate for a second time period based on the first transmission rate, the third transmission rate, and the fourth transmission rate comprises:
determining weights corresponding to the first sending rate, the third sending rate and the fourth sending rate respectively based on equipment information and/or the size of the target data;
and performing weighted summation on the first sending rate, the third sending rate and the fourth sending rate based on the respective corresponding weights to determine a second sending rate in a second time period.
5. The method of any of claims 1-4, wherein sending target data to the video recording device comprises:
determining a compensation value based on the first sending rate and the second sending rate, wherein the compensation value is used for compensating an initial congestion window value of a congestion window of other layers for sending the target data;
determining the sum of the compensation value and the initial congestion window value as a compensated congestion window value;
controlling the other layers to send the target data to the network layer according to the congestion window corresponding to the compensated congestion window value;
controlling the network layer to send the target data to a data link layer;
and controlling the data link layer to send the target data to the video recording equipment.
6. An apparatus for controlling data transmission, the apparatus comprising:
the receiving module is used for receiving a first type of flow control frame for the Nth time, wherein N is an integer greater than or equal to 1, and the first type of flow control frame is sent after congestion occurs in the video equipment;
a determining module, configured to determine a second sending rate in a second time period based on a first sending rate in a first time period, where the second time period is a time period from receiving the first class flow control frame N times to receiving the first class flow control frame N +1 times, and the first time period is a time period before the second time period;
and the sending module is used for sending target data to the video equipment, wherein the rate of sending the target data is less than or equal to the second sending rate.
7. The apparatus of claim 6, wherein the apparatus is disposed in an image capture device, the apparatus further comprising an acquisition module;
the acquiring module is configured to acquire a first sending rate in a first time period if N is 1, where the first time period is a time period from startup to 1 st time of receiving the first class flow control frame by the image pickup apparatus;
the determining module is specifically configured to determine a second sending rate in a second time period based on the first sending rate and a preset weight.
8. The apparatus of claim 6, further comprising an acquisition module to:
if N is larger than 1, acquiring a first sending rate in a first time period, wherein the first time period is a time period from receiving the first class flow control frame for the N-1 th time to receiving the first class flow control frame for the N-th time;
acquiring a third sending rate in a third time period, wherein the third time period is a time period from receiving the first type of flow control frame for the N-1 st time to receiving a second type of flow control frame for the N-1 st time, and the second type of flow control frame is sent after congestion in the video equipment is relieved;
acquiring a fourth sending rate in a fourth time period, wherein the fourth time period is a time period from receiving the second type of flow control frame for the N-1 st time to receiving the first type of flow control frame for the N-th time;
the determining module is specifically configured to determine a second sending rate in a second time period based on the first sending rate, the third sending rate, and the fourth sending rate.
9. A control data transmission device, comprising:
at least one processor, and
a memory communicatively coupled to the at least one processor;
wherein the memory stores instructions executable by the at least one processor, the at least one processor implementing the method of any one of claims 1-5 by executing the instructions stored by the memory.
10. A computer-readable storage medium having stored thereon computer instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1-5.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114513385A (en) * 2022-03-24 2022-05-17 深圳市元征科技股份有限公司 Data transmission method and device, electronic equipment and storage medium

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000073790A (en) * 1999-05-14 2000-12-05 이계철 Method for Transmission Control Protocol window size control in Asynchronous Transfer Mode
CN101621833A (en) * 2009-08-13 2010-01-06 中兴通讯股份有限公司 Message flux control method and base station controller
CN102694731A (en) * 2012-05-29 2012-09-26 北京星网锐捷网络技术有限公司 Speed rate adjustment method, device and network equipment
CN103200121A (en) * 2012-01-09 2013-07-10 中兴通讯股份有限公司 Ethernet flow control device and method based on microwave transmission
US8605605B1 (en) * 2008-11-05 2013-12-10 Juniper Networks, Inc. Setting initial data transmission size based on prior transmission
CN105323187A (en) * 2014-07-31 2016-02-10 北京网康科技有限公司 Congestion control method and device
CN106464598A (en) * 2014-04-23 2017-02-22 贝匡特有限公司 Method and apparatus for network congestion control based on transmission rate gradients
WO2018196504A1 (en) * 2017-04-27 2018-11-01 中兴通讯股份有限公司 Method for transmitting internet of things data, internet of things terminal, and computer readable storage medium
CN108989236A (en) * 2017-05-31 2018-12-11 华为技术有限公司 A kind of flow control methods, equipment and system
CN109698794A (en) * 2019-01-21 2019-04-30 北京达佳互联信息技术有限公司 A kind of jamming control method, device, electronic equipment and storage medium
US20200162389A1 (en) * 2018-11-20 2020-05-21 Ulsan National Institute Of Science And Technology Method and apparatus for controlling congestion
CN113098785A (en) * 2021-03-31 2021-07-09 新华三信息安全技术有限公司 Message processing method and device
CN113543208A (en) * 2021-05-26 2021-10-22 浙江大华技术股份有限公司 Wireless transmission control method, wireless communication system, and computer storage medium

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000073790A (en) * 1999-05-14 2000-12-05 이계철 Method for Transmission Control Protocol window size control in Asynchronous Transfer Mode
US8605605B1 (en) * 2008-11-05 2013-12-10 Juniper Networks, Inc. Setting initial data transmission size based on prior transmission
CN101621833A (en) * 2009-08-13 2010-01-06 中兴通讯股份有限公司 Message flux control method and base station controller
CN103200121A (en) * 2012-01-09 2013-07-10 中兴通讯股份有限公司 Ethernet flow control device and method based on microwave transmission
CN102694731A (en) * 2012-05-29 2012-09-26 北京星网锐捷网络技术有限公司 Speed rate adjustment method, device and network equipment
CN106464598A (en) * 2014-04-23 2017-02-22 贝匡特有限公司 Method and apparatus for network congestion control based on transmission rate gradients
CN105323187A (en) * 2014-07-31 2016-02-10 北京网康科技有限公司 Congestion control method and device
WO2018196504A1 (en) * 2017-04-27 2018-11-01 中兴通讯股份有限公司 Method for transmitting internet of things data, internet of things terminal, and computer readable storage medium
CN108989236A (en) * 2017-05-31 2018-12-11 华为技术有限公司 A kind of flow control methods, equipment and system
US20200162389A1 (en) * 2018-11-20 2020-05-21 Ulsan National Institute Of Science And Technology Method and apparatus for controlling congestion
CN109698794A (en) * 2019-01-21 2019-04-30 北京达佳互联信息技术有限公司 A kind of jamming control method, device, electronic equipment and storage medium
CN113098785A (en) * 2021-03-31 2021-07-09 新华三信息安全技术有限公司 Message processing method and device
CN113543208A (en) * 2021-05-26 2021-10-22 浙江大华技术股份有限公司 Wireless transmission control method, wireless communication system, and computer storage medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114513385A (en) * 2022-03-24 2022-05-17 深圳市元征科技股份有限公司 Data transmission method and device, electronic equipment and storage medium
CN114513385B (en) * 2022-03-24 2024-04-02 深圳市元征科技股份有限公司 Data transmission method, device, electronic equipment and storage medium

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