CN114039931B - Method, device, equipment and medium for controlling data transmission - Google Patents

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

Info

Publication number
CN114039931B
CN114039931B CN202111254027.XA CN202111254027A CN114039931B CN 114039931 B CN114039931 B CN 114039931B CN 202111254027 A CN202111254027 A CN 202111254027A CN 114039931 B CN114039931 B CN 114039931B
Authority
CN
China
Prior art keywords
time
time period
control frame
rate
sending
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202111254027.XA
Other languages
Chinese (zh)
Other versions
CN114039931A (en
Inventor
张建新
马东星
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Dahua Technology Co Ltd
Original Assignee
Zhejiang Dahua Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Dahua Technology Co Ltd filed Critical Zhejiang Dahua Technology Co Ltd
Priority to CN202111254027.XA priority Critical patent/CN114039931B/en
Publication of CN114039931A publication Critical patent/CN114039931A/en
Application granted granted Critical
Publication of CN114039931B publication Critical patent/CN114039931B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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

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: the method comprises the steps of receiving a first class of flow control frame for the nth time, wherein N is an integer greater than or equal to 1, and the first class of flow control frame is sent after congestion occurs in video equipment; and determining a second sending rate in a second time period based on the first sending rate in the first time period, wherein the second time period is a time period from the nth time of receiving the first type of stream control frame to the (n+1) th time of receiving the first type of stream control frame, 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 smaller 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 image pickup device and the video recording device have important significance in the technical field of security monitoring, the image pickup device can collect data such as images or videos of a monitoring area in real time, the video recording device is in communication connection with the image pickup device, and high-resolution video monitoring pictures can be provided for clients according to the videos sent by the image pickup device. The video recording apparatus can access a plurality of image capturing apparatuses, and congestion occurs inside the video recording apparatus easily when the plurality of image capturing apparatuses simultaneously transmit data to the video recording apparatus.
In the prior art, when congestion occurs in the video recording device, the video recording device can send a flow control frame to the video recording device, instruct the video recording device to pause sending data, and when congestion in the video recording device is relieved, send the flow control frame to the video recording device, instruct the video recording device to continue sending data.
However, this manner of suspending transmission of data makes it impossible for the image pickup apparatus to transmit data to the video recording apparatus for a certain period of time, resulting in a decrease in the overall data transmission efficiency.
Disclosure of Invention
The embodiment of the application provides a control data transmission method, a control data transmission device, control data transmission equipment and a control data transmission medium, which are used for improving data transmission efficiency.
In a first aspect, an embodiment of the present application provides a method for controlling data transmission, including:
the method comprises the steps of receiving a first class of flow control frame for the nth time, wherein N is an integer greater than or equal to 1, and the first class of flow control frame is sent after congestion occurs in video equipment;
determining a second sending rate in a second time period based on the first sending rate in a first time period, wherein the second time period is a time period between the nth time of receiving the first type of flow control frame and the (n+1) th time of receiving the first type of flow control frame, 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 smaller than or equal to the second sending rate.
In the embodiment of the application, the 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, the second sending rate in the second time period is determined according to the first sending rate in the first time period before the second time period, the rate of sending target data to the video equipment is smaller than the second sending rate, the maximum sending rate in the later time period is limited, the video equipment can still send data to the video equipment, and compared with the mode of directly suspending sending data in the prior art, the data transmission efficiency can be improved.
In one possible embodiment, the method is applied to an image capturing apparatus, and the determining, based on the first transmission rate in the first period, the second transmission rate in the second period includes:
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 starting up of the image pickup device to the time when the first class of flow control frame is received for the 1 st time;
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 capturing device receives the first type of flow control frame for the first time, the time period from starting up to receiving the first type of flow control frame for the 1 st time is taken as a first time period, and based on the first sending rate and the preset weight, the second sending rate in the second time period is determined, which is equivalent to a way of providing an initialized sending rate.
In one possible embodiment, determining the second transmission rate for the second time period based on the first transmission rate for the first time period includes:
if N is greater than 1, obtaining a first sending rate in a first time period, wherein the first time period is a time period between the receiving of the first class of flow control frame for the N-1 time and the receiving of the first class of flow control frame for the N time;
obtaining a third sending rate in a third time period, wherein the third time period is a time period from the N-1 th time of receiving the first class of flow control frame to the N-1 th time of receiving the second class of flow control frame, and the second class 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 between the receiving of the second class of stream control frame for the N-1 time and the receiving of the first class of stream control frame for the N time;
a second transmission rate within a second time period is determined based on the first transmission rate, the third transmission rate, and the fourth transmission rate.
In the embodiment of the application, when the image capturing device does not receive the first-class stream 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 in combination with the sending rates in the multiple time periods.
In one possible embodiment, determining the second transmission rate for the second period of time based on the first transmission rate, the third transmission rate, and the fourth transmission rate includes:
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 carrying out weighted summation on the first transmission rate, the third transmission rate and the fourth transmission rate based on the respective corresponding weights, and determining a second transmission rate in a second time period.
In this embodiment of the present application, the image capturing apparatus may determine, according to the size of the device information and/or the target data, a weight corresponding to the transmission rate in each time period, and further perform weighted summation on the transmission rates in each time period, to determine a second transmission rate in the second time period, where the influence weight of the transmission rate in each time period on the second transmission rate is different, so that the second transmission rate gradually approaches to the optimal transmission rate.
In one possible embodiment, sending the 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 equipment.
In the embodiment of the application, the compensation value is determined based on the first sending rate and the second sending rate, and the initial congestion window value of the congestion window for sending the target data by the transmission layer is compensated, so that the congestion window value can be increased, the influence of the congestion window of other layers on the sending rate is reduced, the rate for sending the target data by other layers to the network layer is improved, the rate for sending the target data by the image pickup device to the video recording device is only determined by the data link layer, and therefore 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 class of flow control frame for the Nth time, wherein N is an integer greater than or equal to 1, and the first class of flow control frame is sent after congestion occurs in video equipment;
a determining module, configured to determine a second transmission rate in a second period based on a first transmission rate in a first period, where the second period is a period between when the first type of flow control frame is received for the nth time and when the first type of flow control frame is received for the n+1th time, and the first period is a period before the second period;
And the sending module is used for sending target data to the video recording equipment, wherein the rate of sending the target data is smaller 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 acquisition module;
the acquisition module is configured to acquire a first transmission rate in a first period of time if N is 1, where the first period of time is a period of time between when the image capturing device is started and when the first class of flow control frame is received for the 1 st time;
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 greater than 1, obtaining a first sending rate in a first time period, wherein the first time period is a time period between the receiving of the first class of flow control frame for the N-1 time and the receiving of the first class of flow control frame for the N time;
obtaining a third sending rate in a third time period, wherein the third time period is a time period from the N-1 th time of receiving the first class of flow control frame to the N-1 th time of receiving the second class of flow control frame, and the second class 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 between the receiving of the second class of stream control frame for the N-1 time and the receiving of the first class of stream control frame for the N time;
the determining module is specifically configured to determine a second sending rate in a second period of time 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 carrying out weighted summation on the first transmission rate, the third transmission rate and the fourth transmission rate based on the respective corresponding weights, and determining a second transmission 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 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 aspects 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 run on a computer, cause the computer to perform the method of any one of the first aspects.
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 an 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 application;
fig. 5 is a block diagram of an apparatus for controlling data transmission according to an embodiment of the present application.
Detailed Description
For the purpose of making 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 apparent that the described embodiments are only some embodiments of the present invention, not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. Embodiments of the invention and features of the embodiments may be combined with one another arbitrarily without conflict. Also, while a logical order of illustration is depicted in the flowchart, in some cases the steps shown or described may be performed in a different order than presented.
The terms first and second in the description and claims of the invention and in the above-mentioned figures are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the term "include" and any variations thereof is 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 listed steps or elements but may 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, the embodiment of the application provides a method for controlling data transmission. The method may be performed by an image capturing apparatus. The image capturing apparatus may be implemented by a terminal having a photographing function, such as a personal computer, a video camera, or an embedded apparatus, such as a video camera, or a server, such as a physical server or a virtual server.
An application scenario diagram of the method for controlling data transmission is described below. Fig. 1 is a schematic application scenario diagram of a method for controlling data transmission according to an embodiment of the present application. The application scene comprises: 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 video recording apparatus 120 can communicate with each other.
After the image capturing apparatus 110 collects data, the data is transmitted to the video recording apparatus 120, the video recording apparatus 120 processes the received data, and the image capturing apparatus 110 can control the rate at which the data is transmitted to the video recording apparatus 120. The data may be video, image, sound, etc., and a process of how the image capturing apparatus 110 controls the rate will be described below.
It should be noted that fig. 1 is an example of one image capturing apparatus 110, and the number of image capturing apparatuses 110 is not limited in practice. In other words, one video recording device 120 may access one or more image capturing devices 110, and the video recording device 120 has an exchange chip integrated therein, where the exchange chip includes a plurality of ports, and each port may be connected to one image capturing device 110.
After an application scenario diagram of a method of controlling data transmission is presented, wherein data transmission between the image capturing apparatus 110 and the video recording apparatus 120 is involved. Communication between the different devices is achieved through a network model, so that data transmission between the image capturing apparatus 110 and the video recording apparatus 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, a Physical (PHY) layer. Among other common protocols in the transport layer include the transmission control protocol TCP (Transmission Control Protocol) and the user datagram protocol UDP (User Datagram Protocol), so the transport layer may also be referred to as the 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 (Medium Access Control, MAC) layer and a logical link control (Logical Link Control, LLC) layer, for example, a network card of the image pickup apparatus operates in the MAC layer.
Based on the above-described network model and the application scenario discussed in fig. 1, a method of the image capturing apparatus performing control data transmission will be described below as an example. Referring to fig. 2, a flowchart of a method for controlling data transmission according to an embodiment of the present application is provided.
S201, the nth time receives the first class flow control frame.
When one video recording device accesses a plurality of video recording devices, the video recording device can simultaneously receive data sent by the plurality of video recording devices, and at the moment, congestion of a switching chip of the video recording device is easy to occur. The switch chips in different video devices may come from different manufacturers, and the ways in which the switch chips of different manufacturers determine congestion and congestion relief are different, as described in the following examples.
In the first way, congestion or congestion relief is determined according to the number of packets buffered inside the video recording device.
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 exchange chip of the video equipment is congested. After determining that congestion occurs in the switching chip of the video equipment, if the number of data packets cached in the video equipment is smaller than a preset threshold value, determining that congestion of the switching chip of the video equipment is relieved.
And in the second mode, judging congestion or congestion relief according to whether packet loss occurs in the video equipment.
If packet loss occurs in the video equipment, determining that congestion occurs in the switching chip of the video equipment. After determining that congestion occurs in the switching chip of the video equipment, if no packet loss occurs in the video equipment within a preset time period, determining that congestion of the switching chip of the video equipment is relieved.
When congestion or congestion relief occurs in the video recording device, the video recording device may send a stream control frame to the video recording device, where the stream control frame includes a first stream control frame and a second stream control frame, which are described in the following examples.
1. The first class of stream control frames.
The first type of stream control frame is sent after congestion occurs in the video equipment, for example, the first type of stream control frame is an XOFF stream control frame, and the pause time field of the stream control frame is greater than 0.
2. The second type of stream control frame.
The second type of stream control frame is sent after congestion in the video equipment is relieved, for example, the second type of stream control frame is an XON stream control frame, and the pause time field of the stream control frame is equal to 0.
As an embodiment, if the switching chip of the video recording device is only connected to one image capturing device, the video recording device may directly send the first-type stream control frame and the second-type stream control frame to the image capturing device.
As an embodiment, if the switch chip of the video device is connected to a plurality of image capturing devices, the switch chip of the video device may determine, according to its congestion condition, a port for transmitting a first type of flow control frame, and determine the port for transmitting the first type of flow control frame as a port for transmitting a second type of flow control frame. For example, when congestion occurs in the switching chip of the video recording device, the first port of the switching chip receives data at the moment, the first type of flow control frame is sent to the image capturing device corresponding to the first port, and when congestion of the switching chip of the video recording device is relieved, the second type of flow control frame is sent to the image capturing device corresponding to the first port.
After the nth time of the image pickup device receives the stream control frame sent by the video device, determining 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, determining the stream control frame as a first type stream control frame, and if the pause time field of the stream control frame is 0, determining the stream control frame as a second type stream control frame. Wherein N is an integer greater than or equal to 1, when N is equal to 1, it indicates that the image capturing apparatus receives the first type of stream control frame for the first time, and when N is greater than 1, it indicates that the image capturing apparatus does not receive the first type of stream control frame for the first time.
It should be noted that under normal conditions, the video recording device sends the first type of stream control frame and the second type of stream control frame to the image capturing device at intervals, for example, when the video recording device is congested, the first type of stream control frame is sent first, after congestion is relieved, the second type of stream control frame is sent, and when congestion occurs again, the first type of stream control frame is sent. However, there may be a case where the video recording device does not transmit the first type of stream control frame and the second type of stream control frame at intervals, for example, when the video recording device is congested, the first type of stream control frame is transmitted first, the video recording device may not receive the first type of stream control frame, and at this time, the video recording device may continuously transmit the first type of stream control frame to the video recording device multiple times.
Therefore, the nth, nth-1, nth-2 may be understood as that the image capturing device receives the adjacent first type of flow control frame or the adjacent second type of flow control frame, for example, the image capturing device sequentially receives the first type of flow control frame 1, the second type of flow control frame 1, the first type of flow control frame 2, the second type of flow control frame 2, the first type of flow control frame 3, that is, the image capturing device receives the adjacent first type of flow control frame 1, the first type of flow control frame 2, and the third first type of flow control frame 3, and the image capturing device receives the adjacent second type of flow control frame 1 and the second type of flow control frame 2. The nth, nth-1, nth-2 may also be understood as that the image capturing device receives the non-adjacent first-type flow control frame or the second-type flow control frame, for example, the first-type flow control frame 2 is lost, and the image capturing device receives the non-adjacent first-type flow control frame 1 and the first-type flow control frame 3.
S202, determining a second transmission rate in a second time period based on the first transmission rate in the first time period.
In the prior art, the video equipment and the image equipment both start the flow control function, the image equipment pauses to send data when receiving the first type flow control frame, and continues to send data when receiving the second type flow control frame. In order to avoid the image capturing device entering a simple stop mode, the physical layers of the image capturing device and the video recording device in the embodiment of the application both announce the flow control function, but close the flow control function of the image capturing device, and process the flow control frame in a software mode.
After the image capturing apparatus receives the first class of stream control frames, a second transmission rate in a second period of time may be determined based on the first transmission rate in the first period of time.
The second period of time is a period of time between when the first type of flow control frame is received for the nth time and when the first type of flow control frame is received for the n+1th time, and the first period of time is a period of time before the second period of time, specifically, the first period of time may be a period of time between when the image capturing device receives the first type of flow control frame from startup to the nth time, or may be a period of time between when the first type of flow control frame is received for the nth time and when the first type of flow control frame is received for the nth time, or may be a period of time within a preset duration, for example, a preset duration is 6s, when the first type of flow control frame is received for the nth time and a period of time is 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 period, may be an average transmission rate, a maximum transmission rate, or a minimum transmission rate in a preset period of the first period, and may be an average transmission rate, a maximum transmission rate, or a minimum transmission rate at a plurality of preset time points of the first period.
Specifically, the image capturing apparatus may acquire a rate of transmitting a data packet per second in the first period, or acquire a rate of transmitting a data packet per second in a preset period of the first period, or acquire a rate of transmitting a data packet per second at a plurality of preset time points of the first period, obtain a plurality of transmission rates, take an average transmission rate, that is, an average value of the plurality of transmission rates, as the first transmission rate, or take a maximum transmission rate, that is, a maximum value of the plurality of transmission rates, as the first transmission rate, or take a minimum transmission rate, that is, a minimum value of the plurality of transmission rates, as the first transmission rate.
For example, the first period is 0s to 5s, or the first period is 0s to 10s, and the preset period of the first period is 3s to 7s, or the first period is 0s to 10s, and the plurality of preset time points of the first period are 2, 4, 6, 8, 10s. In these three cases, the rates of transmitting the data packets within 5s are 1Mbps, 2Mbps, 3Mbps, 4Mbps, and 5Mbps, respectively, the average transmission rate is (1+2+3+4+5)/5=3 Mbps, the maximum transmission rate is 5Mbps, and the minimum transmission rate is 1Mbps.
The second transmission rate is the maximum transmission rate in the second period, in other words, the actual transmission rate in the second period cannot exceed the second transmission rate. It should be noted that the transmission rate in the embodiment of the present application may be understood as a bandwidth, that is, a transmission rate of 10Mbps may be understood as a bandwidth of 10M.
The manner of determining the second transmission rate based on the first transmission rate is different depending on whether the image capturing apparatus first receives the first class of stream control frame, and an example is described below.
In case one, N is equal to 1.
If N is equal to 1, which indicates that the image capturing device receives the first type of flow control frame for the first time, the first time period is a time period between when the image capturing device is started and when the image capturing device receives the first type of flow control frame for the 1 st time, and the image capturing device can determine the second sending rate in the second time period based on the first sending rate of the first time period and a preset weight.
The image capturing device may have a preset weight pre-stored, where the preset weight may be obtained by the image capturing device through multiple tests in advance, or may be obtained by other devices through multiple tests in advance and then sent to the image capturing device, where the other devices are devices other than the image capturing device, for example, a video recording device connected to the image capturing device.
Wherein it is related to how the image capturing apparatus determines the second transmission rate based on the first transmission rate and the preset weight, an example is described below, respectively.
In the first case, the image capturing apparatus takes the product of the first transmission rate and a preset weight value as the second transmission rate, and the value range of the preset weight value is (0, 1).
For example, the formula for determining the second transmission rate is as follows:
B＝α 1 ×B 0
wherein B represents a second transmission rate, B 0 Representing a first transmission rate, alpha 1 Representing a preset weight value of 0<α 1 ≤1。
In the second aspect, the image capturing apparatus uses, as the second transmission rate, a ratio of the first transmission rate to a preset weight, where the preset weight has a value greater than or equal to 1.
For example, the formula for determining the second transmission rate is as follows:
B＝B 0 /α 2
wherein B represents a second transmission rate, B 0 Representing a first transmission rate, alpha 2 Representing preset weight, alpha 2 ≥1。
It should be noted that when the preset weight is 1, it means that the image capturing apparatus directly uses the first transmission rate in the first period as the second transmission rate in the second period.
In case two, N is greater than 1.
If N is greater than 1, it indicates that the image capturing device receives the first type of flow control frame and the second type of flow control frame before the first type of flow control frame is received this time, where the first time period is a time period from when the first type of flow control frame is received for the nth time to when the first type of flow control frame is received for the nth time, and the image capturing device may also determine the second sending rate in the second time period based on the first sending rate and the preset weight in the first time period, specifically please refer to the mode in the first case discussed above, which is not repeated here.
Or the image capturing apparatus may divide the first period into a plurality of periods, and determine the second transmission rate in the second period from the plurality of transmission rates in the plurality of periods. It should be noted that, in this embodiment of the present application, in the case where the video recording device sends the first-type and second-type stream control frames to the image capturing device at intervals, and the image capturing device also receives the first-type and second-type stream control frames at intervals, in other words, the image capturing device receives the second-type stream control frames in the first period.
Specifically, the image capturing apparatus may acquire the first transmission rate in the first period, the third transmission rate in the third period, and the fourth transmission rate in the fourth period, respectively. The meaning of the first sending rate is referred to in the foregoing discussion, and will not be described herein.
The third time period is a time period from the receiving of the first class of stream control frame for the N-1 th time to the receiving of the second class of stream control frame for the N-1 th time, and the third sending rate can be an average sending rate, a maximum sending rate or a minimum sending rate in the third time period, can 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 can also be an average sending rate, a maximum sending rate or a minimum sending rate of a plurality of preset time points of the third time period.
The fourth time period is the time period between the receiving of the second class flow control frame for the N-1 time and the receiving of the first class flow control frame for the N time. The fourth transmission rate may be an average transmission rate, a maximum transmission rate, or a minimum transmission rate in the fourth period, may be an average transmission rate, a maximum transmission rate, or a minimum transmission rate in a preset period of the fourth period, or may be an average transmission rate, a maximum transmission rate, or a minimum transmission rate at a plurality of preset time points of the fourth period.
Further, after the image capturing apparatus acquires the first transmission rate, the third transmission rate, and the fourth transmission rate, the second transmission rate in the second period of time may be determined based on the first transmission rate, the third transmission rate, and the fourth transmission rate, and an example is described below.
In the first case of the second case, the image capturing apparatus determines the maximum 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:
B＝max(B 0 +B 1 +B 2 )
wherein B represents a second transmission rate, B 0 Representing a first transmission rate, B 1 Represents a third transmission rate, B 2 Indicating a fourth transmission rate, max () indicates taking the maximum value.
In the second case, the image capturing 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:
wherein B represents a second transmission rate, B 0 Representing a first transmission rate, B 1 Represents a third transmission rate, B 2 Indicating a fourth transmission rate.
In a third aspect of the second aspect, the image capturing apparatus performs weighted summation of the first transmission rate, the third transmission rate, and the fourth transmission rate, and determines a second transmission rate in a second period.
As one embodiment, the image capturing apparatus may determine weights corresponding to the first transmission rate, the third transmission rate, and the fourth transmission rate, respectively, based on the configuration information. The configuration information includes device information and/or size of target data, the device information includes information of an image capturing device and information of a video recording device, the information of the video recording device includes parameter information of an exchange chip, and the information of the image capturing device includes number of image capturing devices accessed by the video recording device. The size of the target data includes the size of the video transmitted by the image pickup apparatus, the size of the target data includes the frame rate of the video, for example, the video including 30 frames of pictures, and the resolution of the video, for example, the size of each frame of pictures is 100kB.
As an embodiment, after determining weights corresponding to the first sending rate, the third sending rate, and the fourth sending rate, 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 meaning of the other devices and the configuration information is referred to the foregoing discussion, which is not repeated herein.
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 weights corresponding to the respective transmission rates, the image capturing apparatus performs weighted summation on the first transmission rate, the third transmission rate, and the fourth transmission rate based on the weights corresponding to the respective transmission rates, and determines a second transmission rate in the second period.
For example, the formula for determining the second transmission rate is as follows:
B＝α×B 0 +β×B 1 +γ×B 2
wherein B represents a second transmission rate, B 0 Representing a first transmission rate, B 1 Represents a third transmission rate, B 2 The fourth transmission rate is represented, 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. Gamma may be the square of beta, i.e., gamma=beta 2 。
S203, sending target data to the video recording equipment.
After the image capturing apparatus determines the second transmission rate in the second period based on the first transmission rate in the first period, the image capturing apparatus may transmit target data to the image capturing apparatus, where the target data may be data such as an image or a video acquired by the image capturing apparatus, and the rate of transmitting the target data is less than or equal to the second transmission rate, that is, the second transmission rate is the maximum transmission rate in the second period, for example, the second transmission rate is 10Mbps, if the data packet actually able to be transmitted by the image capturing apparatus is 5Mb, the data is transmitted at 5Mbps, and if the data packet actually able to be transmitted by the image capturing apparatus is 11Mb, the data is only transmitted at 10 Mbps.
It should be noted that, in the embodiment of the present application, the maximum transmission rate in the first period is determined based on the fifth transmission rate in the fifth period, where the fifth period is a period between the N-2 th reception of the first type of stream control frame and the N-1 th reception of the first type of stream control frame. In order to more clearly illustrate the relationship between the time periods, please refer to fig. 3, which is a schematic diagram of the time periods according to an 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 period, may be an average transmission rate, a maximum transmission rate, or a minimum transmission rate in a preset period of the fifth period, and may be an average transmission rate, a maximum transmission rate, or a minimum transmission rate at a plurality of preset time points of the fifth period. The manner in which the image capturing apparatus determines the maximum transmission rate in the first period based on the fifth transmission rate is specifically referred to the foregoing manner in which the second transmission rate is determined based on the first transmission rate, that is, the content of S202, which is not described herein.
As an embodiment, considering that each layer of the network model has a certain flow control mechanism, in order to fully utilize the link bandwidth resource, in the embodiment of the present application, the image capturing device 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 video recording device, where the rate cannot exceed the second sending rate.
It should be noted that the first transmission rate, the third transmission rate, and the fourth transmission rate may specifically refer to rates at which the image capturing apparatus transmits data from the data link layer to the video 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 equipment by the video equipment is only determined by the MAC layer of the data link layer, so that the link bandwidth resource is fully utilized, and the data transmission efficiency is improved.
As an embodiment, when congestion occurs, the congestion window for sending the target data by other layers is reduced, so that the rate of sending the data by other layers to the network layer is reduced, and the rate of sending the data by the network layer to the data link layer is affected. Therefore, in the embodiment of the application, the image capturing device can compensate the initial congestion window value of the congestion window for sending the target data by other layers, and control the other layers to send the target data to the network layer according to the congestion window corresponding to the compensated congestion window value, so that the influence of the upper layer on the second sending rate is reduced.
Specifically, the other layers are application layers or transport layers above the network layer in the network model, after the image capturing device determines the second sending rate in the second time period based on the first sending rate in the first time period, the image capturing device 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 positively correlated with the compensation value, the compensation value is used to compensate an initial congestion window value of a congestion window in which other layers send target data, and the initial congestion window value is an initial window value in which each TCP link is slowly started and is specified by the IEEE802.3 protocol.
For example, the image capturing apparatus prestores a correspondence between the first transmission rate, the second transmission rate, and the compensation value, and determines the compensation value to which the first transmission rate and the second transmission rate commonly correspond from the correspondence.
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 device.
In the embodiment of the application, by compensating the congestion window of other layers, the sending rate between other layers and the network layer can be improved, the influence of the upper layer on the second sending rate is reduced, the congestion window fluctuation of other layers caused by congestion is reduced, and the overall transmission efficiency reduction caused by the congestion window fluctuation is further avoided.
As an example, the image pickup apparatus in the embodiment of fig. 2 is, for example, the image pickup apparatus 110 in fig. 1, and the video recording apparatus is, for example, the video 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 equivalent to being disposed in the image capturing apparatus 110 discussed above, referring to fig. 4, and includes:
A receiving module 401, configured to receive a first type of flow control frame for the nth time, where 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 recording device;
a determining module 402, configured to determine a second transmission rate in a second period based on the first transmission rate in the first period, where the second period is a period between when the first type of flow control frame is received for the nth time and when the first type of flow control frame is received for the n+1th time, and the first period is a period before the second period;
and a sending module 403, configured to send the target data to the video recording device, where 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 the apparatus further includes an acquisition module 404;
the obtaining module 404 is configured to obtain a first sending rate in a first period of time if N is 1, where the first period of time is a period of time between when the image capturing device is started up and when the first class of stream control frame is received for the 1 st time;
the determining module 402 is specifically configured to determine a second sending rate in a second period of time based on the first sending rate and a preset weight.
In one possible embodiment, the acquisition module 404 is further configured to:
If N is greater than 1, obtaining a first sending rate in a first time period, wherein the first time period is a time period from the time when the first class of flow control frame is received for the N-1 time to the time when the first class of flow control frame is received for the N time;
obtaining a third sending rate in a third time period, wherein the third time period is a time period from the time when the first class of stream control frame is received for the N-1 time to the time when the second class of stream control frame is received for the N-1 time, and the second class of stream control frame is sent after congestion in video equipment is relieved;
acquiring a fourth sending rate in a fourth time period, wherein the fourth time period is a time period from the time when the second class of flow control frame is received for the N-1 th time to the time when the first class of flow control frame is received for the N-th time;
the determining module is specifically configured to determine a second transmission rate in the second period of time based on the first transmission rate, the third transmission rate, and the fourth transmission rate.
In one 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 equipment information and/or the size of the target data;
and carrying out weighted summation on the first transmission rate, the third transmission rate and the fourth transmission rate based on the weight values corresponding to the first transmission rate, the third transmission rate and the fourth transmission rate, and determining a second transmission rate in a second time period.
In one possible embodiment, the determining module 402 is further configured to:
determining a compensation value based on the first transmission rate and the second transmission rate, wherein the compensation value is used for compensating an initial congestion window value of a congestion window of other layers for transmitting target data;
determining a 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 according to the data;
the control data link layer transmits target data to the video recording device.
As an embodiment, the apparatus for controlling data transmission discussed in fig. 4 may implement any of the methods for controlling data transmission discussed above, which are not described herein.
Based on the same inventive concept, an embodiment of the present application provides an apparatus for controlling data transmission, which may implement the functions of the image capturing apparatus discussed above, referring to fig. 5, 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 a method of controlling data transfer as any one of the preceding discussion by executing the instructions stored by the memory 502.
The processor 501 may be a central processing unit (central processing unit, CPU), or may be a digital processing unit, or may be a combination of one or more of image processors, etc. The memory 502 may be a volatile memory (RAM), such as a random-access memory (RAM); the memory 502 may also be a non-volatile memory (non-volatile memory), such as a read-only memory, a flash memory (flash memory), a Hard Disk Drive (HDD) or a Solid State Drive (SSD), or 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, but is not limited thereto. Memory 502 may be a combination of the above.
As an example, the processor 501 in fig. 5 may implement any of the methods of 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 run on a computer, cause the computer to perform a method of controlling data transmission as any one of the previous discussions.
It will be appreciated by those skilled in the art that 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 flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims (9)

1. A method of controlling data transmission, comprising:
the method comprises the steps of receiving a first class of flow control frame for the nth time, wherein N is an integer greater than or equal to 1, and the first class of flow control frame is sent after congestion occurs in video equipment;
determining a second sending rate in a second time period based on the first sending rate in a first time period, wherein the second time period is a time period between the nth time of receiving the first type of flow control frame and the (n+1) th time of receiving the first type of flow control frame, and the first time period is a time period before the second time period;
transmitting target data to the video recording device, wherein the rate of transmitting the target data is smaller than or equal to the second transmission rate;
wherein, the sending the 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 a 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 equipment.
2. The method of claim 1, wherein the method is applied in an image capturing apparatus, and wherein determining the second transmission rate in the second period of time based on the first transmission rate in the first period of time 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 starting up of the image pickup device to the time when the first class of flow control frame is received for the 1 st time;
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 the first transmission rate for the first time period comprises:
if N is greater than 1, obtaining a first sending rate in a first time period, wherein the first time period is a time period between the receiving of the first class of flow control frame for the N-1 time and the receiving of the first class of flow control frame for the N time;
obtaining a third sending rate in a third time period, wherein the third time period is a time period from the N-1 th time of receiving the first class of flow control frame to the N-1 th time of receiving the second class of flow control frame, and the second class 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 between the receiving of the second class of stream control frame for the N-1 time and the receiving of the first class of stream control frame for the N time;
a second transmission rate within a second time period is determined 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 period of time 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 carrying out weighted summation on the first transmission rate, the third transmission rate and the fourth transmission rate based on the respective corresponding weights, and determining a second transmission rate in a second time period.
5. An apparatus for controlling data transmission, the apparatus comprising:
the receiving module is used for receiving a first class of flow control frame for the Nth time, wherein N is an integer greater than or equal to 1, and the first class of flow control frame is sent after congestion occurs in video equipment;
A determining module, configured to determine a second transmission rate in a second period based on a first transmission rate in a first period, where the second period is a period between when the first type of flow control frame is received for the nth time and when the first type of flow control frame is received for the n+1th time, and the first period is a period before the second period;
the sending module is used for sending target data to the video recording equipment, wherein the rate of sending the target data is smaller than or equal to the second sending rate;
the sending module is further configured to, when sending target data to the video recording device: 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 a 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 equipment.
6. The apparatus of claim 5, wherein the apparatus is disposed in an image capturing device, the apparatus further comprising an acquisition module;
the acquiring module is configured to acquire a first sending rate in a first period of time if N is 1, where the first period of time is a period of time between when the image capturing device is started up and when the first class of flow control frame is received for the 1 st time;
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.
7. The apparatus of claim 5, further comprising an acquisition module to:
if N is greater than 1, obtaining a first sending rate in a first time period, wherein the first time period is a time period between the receiving of the first class of flow control frame for the N-1 time and the receiving of the first class of flow control frame for the N time;
obtaining a third sending rate in a third time period, wherein the third time period is a time period from the N-1 th time of receiving the first class of flow control frame to the N-1 th time of receiving the second class of flow control frame, and the second class 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 between the receiving of the second class of stream control frame for the N-1 time and the receiving of the first class of stream control frame for the N 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.
8. A control data transmission apparatus, characterized by 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 of claims 1-4 by executing the memory stored instructions.
9. A computer readable storage medium storing computer instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1-4.
CN202111254027.XA 2021-10-27 2021-10-27 Method, device, equipment and medium for controlling data transmission Active CN114039931B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111254027.XA CN114039931B (en) 2021-10-27 2021-10-27 Method, device, equipment and medium for controlling data transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111254027.XA CN114039931B (en) 2021-10-27 2021-10-27 Method, device, equipment and medium for controlling data transmission

Publications (2)

Publication Number Publication Date
CN114039931A CN114039931A (en) 2022-02-11
CN114039931B true CN114039931B (en) 2024-04-02

Family

ID=80142099

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111254027.XA Active CN114039931B (en) 2021-10-27 2021-10-27 Method, device, equipment and medium for controlling data transmission

Country Status (1)

Country Link
CN (1) CN114039931B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Citations (12)

* 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
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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102139378B1 (en) * 2018-11-20 2020-07-29 울산과학기술원 Method and apparatus for controlling congestion

Patent Citations (12)

* 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
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

Also Published As

Publication number Publication date
CN114039931A (en) 2022-02-11

Similar Documents

Publication Publication Date Title
US20180270285A1 (en) Methods and devices for efficient adaptive bitrate streaming
US10848433B2 (en) Method for distributing available bandwidth of a network amongst ongoing traffic sessions run by devices of the network, corresponding device
CN109600610B (en) Data encoding method, terminal and computer readable storage medium
US20120324123A1 (en) Method and apparatus for session bandwidth estimation and rate control
TWI517632B (en) Dynamic bandwidth re-allocation
US20140362864A1 (en) Transmitting apparatus, transmitting method, and storage medium
US20120230390A1 (en) Adaptive Control of Encoders for Continuous Data Streaming
US10862945B2 (en) Adaptive restful real-time live media streaming
EP3466001B1 (en) Media buffering
JP2001094625A (en) Data communication unit, data communication method and storage medium
EP3103220A1 (en) System and method for dynamic effective rate estimation for real-time video traffic
JP2022036307A (en) Client, server, reception method, and transmission method
CN114039931B (en) Method, device, equipment and medium for controlling data transmission
JPH11289350A (en) Data transmitter
KR101837637B1 (en) Streaming method based on Client-side ACK-regulation and apparatus thereof
WO2021219563A1 (en) Method and server for audio and/or video content delivery
WO2015044104A1 (en) Video traffic management
JP2009141565A (en) Reception terminal apparatus
JPH11215480A (en) Video communication system, video transmitter and video receiver, and their control methods and storage media
CN111953612B (en) Data transmission control method and device
CN111953613A (en) Data transmission control method and device
CN115037701B (en) Video processing method, device, server and medium
US8773991B2 (en) Bandwidth control method
WO2022183431A1 (en) Data processing method and device
EP3861757B1 (en) Method to be implemented at a device able to run one adaptive streaming session, and corresponding device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant