CN113783798B - Data transmission method and system and edge service equipment - Google Patents
Data transmission method and system and edge service equipment Download PDFInfo
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- CN113783798B CN113783798B CN202111118323.7A CN202111118323A CN113783798B CN 113783798 B CN113783798 B CN 113783798B CN 202111118323 A CN202111118323 A CN 202111118323A CN 113783798 B CN113783798 B CN 113783798B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 328
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000005457 optimization Methods 0.000 claims description 30
- 230000006870 function Effects 0.000 claims description 28
- 238000012549 training Methods 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 8
- 238000013439 planning Methods 0.000 abstract description 4
- 238000007726 management method Methods 0.000 description 3
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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
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
- H04L47/2425—Traffic characterised by specific attributes, e.g. priority or QoS for supporting services specification, e.g. SLA
- H04L47/2433—Allocation of priorities to traffic types
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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
- H04L47/50—Queue scheduling
- H04L47/52—Queue scheduling by attributing bandwidth to queues
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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
- H04L47/50—Queue scheduling
- H04L47/62—Queue scheduling characterised by scheduling criteria
- H04L47/622—Queue service order
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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
- H04L47/50—Queue scheduling
- H04L47/62—Queue scheduling characterised by scheduling criteria
- H04L47/625—Queue scheduling characterised by scheduling criteria for service slots or service orders
- H04L47/628—Queue scheduling characterised by scheduling criteria for service slots or service orders based on packet size, e.g. shortest packet first
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Abstract
The embodiment of the invention provides a data transmission method and system and edge service equipment, and relates to the technical field of data transmission. The data transmission method comprises the following steps: when receiving target data sent by data acquisition equipment, acquiring data packets corresponding to the target data; setting a current priority weight coefficient value of each data packet every time a preset time interval passes, selecting a plurality of target data packets from the plurality of data packets to be transmitted based on the current priority weight coefficient value and the data packet size of the plurality of data packets to be transmitted, and respectively distributing the plurality of target data packets to data transmission queues of corresponding data transmission interfaces; and controlling each data transmission interface to sequentially transmit the target data packet in the corresponding data transmission queue to the central service equipment. According to the invention, the risk of data loss in the data transmission interface is reduced, and the reasonable planning of data packet transmission in the edge service equipment is realized.
Description
Technical Field
The present invention relates to the field of data transmission technologies, and in particular, to a data transmission method and system, and an edge service device.
Background
With the development of edge computing technology, big data processing can be performed through a central server-edge server architecture system, so that the problem of insufficient cloud computing service capability is solved; in the architecture system, the edge server is a data transmission bridge between the terminal equipment and the central server, receives and processes data acquired by the terminal equipment, and sends the processed data to the central server for unified management through a network.
However, when the edge server performs data transmission, the edge server performs point-to-point transmission with the central server, the same data in the edge server can frequently request to be sent on the interface in real time, and when the number of times the interface is requested exceeds a set maximum limit number, the data in the interface can be lost. And when the resources of the edge server are limited, a large amount of data is accumulated in the edge server to cause data accumulation, meanwhile, the types of data received by the edge server are various, the transmission priorities of different data are different, and scheduling the data simply based on the priorities can cause that the data with low priority cannot be transmitted in a period of time, and even cause that the central server loses the data in a period of time.
Disclosure of Invention
The invention aims to provide a data transmission method, a data transmission system and edge service equipment, wherein a plurality of data packets in the edge service equipment can be sequentially transmitted to central service equipment through corresponding data transmission interfaces according to the sequence distributed to a data transmission queue, so that the condition that the same data packet is frequently requested to be transmitted for multiple times in one data transmission interface is avoided, the risk of data loss in the data transmission interface is reduced, and reasonable planning of data packet transmission in the edge service equipment is realized.
In order to achieve the above object, the present invention provides a data transmission method applied to an edge service device, where the edge service device includes a plurality of data transmission interfaces, the method includes: when target data sent by data acquisition equipment are received, acquiring data packets corresponding to the target data; setting a current priority weight coefficient value of each data packet every time a preset time interval passes, and selecting a plurality of target data packets from the plurality of data packets to be transmitted and respectively distributing the target data packets to data transmission queues of corresponding data transmission interfaces based on the current priority weight coefficient values of the plurality of data packets to be transmitted and the sizes of the data packets; and controlling each data transmission interface to sequentially transmit the target data packet in the corresponding data transmission queue to the central service equipment.
The invention also provides edge service equipment, 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 to enable the at least one processor to perform the data transmission method described above.
The invention also provides a data transmission system, which comprises: at least one edge service device, a plurality of data acquisition devices and a central service device; each edge service device corresponds to at least one data acquisition device, and each edge service device is in communication connection with the corresponding data acquisition device, each edge service device is provided with a plurality of data transmission interfaces, and each edge service device performs data transmission with the central service device through the plurality of data transmission interfaces.
In the embodiment of the invention, when the edge service equipment transmits the received target data sent by the data acquisition equipment to the central service equipment, the edge service equipment acquires the data packet corresponding to each target data; after a preset time interval, setting a current priority weight coefficient value of each data packet, selecting a plurality of target data packets from the plurality of data packets to be transmitted and respectively distributing the target data packets to data transmission queues of corresponding data transmission interfaces based on the current priority weight coefficient value and the data packet size of the plurality of data packets to be transmitted, wherein the setting of the data transmission interfaces corresponding to each target data packet as a data transmission path is equivalent, and then controlling each data transmission interface to sequentially transmit the target data packets in the corresponding data transmission queues to the central service equipment according to the sequence of the target data packets in the data transmission queues corresponding to each data transmission interface; the data packets in the edge service equipment can be sequentially transmitted to the central service equipment through the corresponding data transmission interfaces according to the sequence allocated to the data transmission queues, so that the same data packet is prevented from being frequently requested to be transmitted in one data transmission interface for multiple times, the risk of data loss in the data transmission interface is reduced, and reasonable planning of data packet transmission in the edge service equipment is realized.
In addition, in this embodiment, the current priority weight coefficient value and the data packet size of each data packet are combined to select a corresponding data transmission interface for each data packet to transmit, and the data packet size reflects the transmission time of the data packet, that is, the current priority weight coefficient value and the transmission time of each data packet are combined to select a corresponding data transmission interface for each data packet to transmit, so that the problem that low-priority data including data is possibly unable to be transmitted due to control of data transmission according to priority alone is avoided. Meanwhile, the current priority weight coefficient value of each data packet to be transmitted is set after each preset time interval, and the priority of each data packet can be adjusted as required so as to further optimize the transmission efficiency of the data packet.
In one embodiment, the setting the current priority weight coefficient value of each data packet every time a preset time interval passes includes:
setting the current priority weight coefficient value of each data packet to gradually increase to a preset weight threshold value from the initial priority weight coefficient value according to a preset mode every time a preset time interval passes.
In one embodiment, the selecting, based on the current priority weight coefficient values of the plurality of data packets to be transmitted and the data packet sizes, the plurality of target data packets from the plurality of data packets to be transmitted to be respectively allocated to the data transmission queues of the corresponding data transmission interfaces includes:
constructing a target optimization function taking data transmission time as an optimization target by utilizing the priority weight coefficient, the data packet size and the network bandwidth;
And obtaining the data packet selected to be transmitted by each data transmission interface when the data transmission time is shortest as a target data packet based on the current priority weight coefficient value, the data packet size and the target optimization function of each data packet, and distributing each target data packet to a data transmission queue of the corresponding data transmission interface.
In one embodiment, the expression of the objective optimization function is:
The constraint conditions of the target optimization function are as follows:
Wherein Time min represents a data transmission Time, n represents a total number of data packets to be transmitted, j represents a total number of data transmission interfaces, k xi represents whether an xth data transmission interface selects to transmit an ith data packet, k xi =0 represents that an xth data transmission interface does not select to transmit an ith data packet, k xi =1 represents that an xth data transmission interface selects to transmit an ith data packet, D i represents a data packet size of an ith data packet, f i represents a current priority weight coefficient value of an ith data packet, v x represents a network bandwidth of an xth data transmission interface, and x=1, 2, 3, … …, j.
In one embodiment, after setting the current priority weight coefficient value of each data packet at each preset time interval, and based on the current priority weight coefficient value and the data packet size of the plurality of data packets to be transmitted, selecting a plurality of target data packets from the plurality of data packets to be transmitted, and respectively distributing the target data packets to the data transmission queues of the corresponding data transmission interfaces, the method further includes:
judging whether target data transmission interfaces with the number of target data packets to be transmitted in a data transmission queue being greater than or equal to a preset number threshold exist in the plurality of data transmission interfaces;
If so, at least one target data packet in the data transmission queues of the target data transmission interfaces is distributed to the data transmission queues of the data transmission interfaces, wherein the number of the target data packets to be transmitted is smaller than a preset number threshold value.
In one embodiment, the preset number threshold is equal to the number of data transmission interfaces.
In one embodiment, the preset time interval is smaller than a minimum transmission time of the plurality of target data packets to be transmitted.
In one embodiment, obtaining the data packet corresponding to each target data includes:
respectively identifying the data type of each target data, and obtaining a data training model corresponding to each target data based on the data type of each target data;
and inputting each target data into the corresponding data training model to obtain a data packet corresponding to each target data.
Drawings
Fig. 1 is a schematic diagram of a data transmission system to which a data transmission method in a first embodiment of the present invention is applied;
fig. 2 is a specific flowchart of a data transmission method in the first embodiment of the present invention;
fig. 3 is a specific flowchart of a data transmission method in a second embodiment according to the present invention;
fig. 4 is a specific flowchart of a data transmission method in a third embodiment according to the present invention;
fig. 5 is a specific flowchart of a data transmission method in a fourth embodiment according to the present invention;
fig. 6 is a schematic diagram of an edge service apparatus in a fifth embodiment according to the present invention.
Detailed Description
The following detailed description of various embodiments of the present invention will be provided in connection with the accompanying drawings to provide a clearer understanding of the objects, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the invention, but rather are merely illustrative of the true spirit of the invention.
In the following description, for the purposes of explanation of various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that an embodiment may be practiced without one or more of the specific details. In other instances, well-known devices, structures, and techniques associated with the present application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.
Throughout the specification and claims, unless the context requires otherwise, the word "comprise" and variations such as "comprises" and "comprising" will be understood to be open-ended, meaning of inclusion, i.e. to be interpreted to mean "including, but not limited to.
Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "or/and" unless the context clearly dictates otherwise.
In the following description, for the purposes of clarity of presentation of the structure and manner of operation of the present invention, the description will be made with the aid of directional terms, but such terms as "forward," "rearward," "left," "right," "outward," "inner," "outward," "inward," "upper," "lower," etc. are to be construed as convenience, and are not to be limiting.
The first embodiment of the present invention relates to a data transmission method, which is applied to an edge service device, where the edge service device may adopt the data transmission method in this example to transmit target data sent by a received data acquisition device to a central service device, where the edge service device may be a single server or a server group; the data acquisition device may be a terminal device with temperature, speed, voice and image acquisition functions, for example, the data acquisition device is an image acquisition device (for example, a camera, a video recorder, etc.), and the target data acquired by the image acquisition device is image data; the central server device may then be a server group comprising a plurality of servers.
Referring to fig. 1, in a data transmission system, the data transmission system includes at least one edge service device 1 (one is taken as an example in the figure), a plurality of data acquisition devices 2 and a central service device 3, the edge service device 1 is respectively connected with the plurality of data acquisition devices 2 in a communication manner, the edge service device 1 is also connected with the central service device 3 in a communication manner, the edge service device 1 includes a plurality of data transmission interfaces 11, the central service device 3 is provided with a plurality of data service interfaces 31, the data transmission interfaces 11 are correspondingly connected with the data service interfaces 31 in a communication manner, and data transmission is performed between the edge service device 1 and the central service device 3 through a channel formed between the data transmission interfaces 11 and the data service interfaces 31; the edge service device 1 may be a single server or a server group, the data acquisition device 2 may be a terminal device having a shooting function such as a camera, a video recorder, or the like, and the central server device 3 may be a server group including a plurality of servers. The central server device 3 is further provided with an information transmission interface 32, and the edge service device 1 transmits the device information and the device state of the edge service device 1 and the device information and the device state of each data acquisition device 2 to the central server device 3 through the information transmission interface 32, and when the device information or the device state of the edge service device 1 or any data acquisition device 2 changes, the edge service device transmits the changed device information or the changed device state to the central service device 3 again through the information transmission interface 32. The device information comprises sn, ip, mac and model of the device, the device state comprises heartbeat information of the device, whether the device is online, whether the device is activated, and the like.
A specific flow of the data transmission method of the present embodiment is shown in fig. 2.
Step 101, when target data sent by a data acquisition device are received, obtaining a data packet corresponding to each target data.
Specifically, the data acquisition equipment has a data acquisition function, and can acquire data under a set application scene to obtain target data; the edge service equipment is in communication connection with at least one data acquisition equipment (generally a plurality of data acquisition equipment), each data acquisition equipment acquires target data according to preset frequency and sends the acquired target data to the edge service equipment, and after receiving a plurality of target data from each data acquisition equipment, the edge service equipment analyzes each target data and extracts a data packet which needs to be transmitted to the central service equipment from the target data.
Taking a data acquisition device as an example with an image acquisition device, a plurality of image acquisition devices are respectively in communication connection with an edge service device; each image acquisition device can acquire images under the set application scene, for example, in an intelligent catering scene, and the image acquisition devices can acquire images of foods which are automatically produced according to the set frequency, wherein the foods are such as dumplings, pizza, fried chicken and the like; in an express delivery transportation scene, the image acquisition equipment can acquire images of the transported express delivery according to a set frequency; after each image acquisition device acquires image data, the acquired image data is sent to the edge service device, the edge service device analyzes each image data after receiving a plurality of image data from each image acquisition device, and the characteristic data packets corresponding to each image data are respectively acquired, namely the data packets which need to be transmitted to the central service device.
Step 102, setting a current priority weight coefficient value of each data packet every time a preset time interval passes, and selecting a plurality of target data packets from the plurality of data packets to be transmitted and respectively distributing the target data packets to data transmission queues of corresponding data transmission interfaces based on the current priority weight coefficient values and the data packet sizes of the plurality of data packets to be transmitted.
Specifically, the number of data transmission interfaces is represented by M, and the number of data packets to be transmitted currently in the edge service equipment is represented by N; the edge service equipment is preset with a time interval for distributing the data packets, and updates the current priority weight coefficient values of N data packets to be transmitted currently after the preset time interval; and when the number N of the data packets to be transmitted is greater than the number M of the data transmission interfaces, selecting M data packets from the N data packets as target data packets according to the current priority weight coefficient values of the N data packets and the size of the data packets, wherein the M target data packets are in one-to-one correspondence with the M data transmission interfaces, and then the edge service equipment respectively distributes the selected target data packets into the data transmission queues of the corresponding data transmission interfaces, wherein the data transmission interfaces corresponding to the target data packets are the data transmission paths of the data transmission interfaces. When the number N of data packets to be transmitted is less than or equal to the number M of data transmission interfaces, the N data packets to be transmitted may be directly allocated to the data transmission queues of different data transmission interfaces.
After a set time interval again, repeating the above process, re-selecting M data packets from the multiple data packets to be transmitted currently as target data packets, wherein the M target data packets are in one-to-one correspondence with the M data transmission interfaces, and adding the M target data packets selected at this time into the data transmission queues of the corresponding data transmission interfaces respectively. The data packet to be transmitted currently by the edge service device may further include a data packet corresponding to the target data received in the time interval.
In this embodiment, after M target data packets are selected, the transmission time of each target data packet may be obtained based on the current network bandwidth, and the minimum transmission time of M transmission times corresponding to the M target data packets may be used as the next time interval; however, the present invention is not limited thereto, and the minimum transmission time among the N transmission times corresponding to the N data packets may be directly set as a fixed time interval.
Step 103, controlling each data transmission interface to sequentially transmit the target data packet in the corresponding data transmission queue to the central service equipment.
Specifically, for each data transmission interface of the edge service device, based on the sequence of target data packets in a data transmission queue of the data transmission interface, the data transmission interface is controlled to sequentially transmit the target data packets in the corresponding data transmission queue to the central service device, a plurality of target data packets in the data transmission queue are sequentially transmitted to the central service device according to the sequence of the target data packets distributed to the queue, after one target data packet in the data transmission queue of the data transmission interface is transmitted, the edge service device receives feedback information which is returned by the central service device and indicates that the receiving is completed, and then controls the data transmission interface to transmit the next target data packet in the data transmission queue to the central service device. The edge service equipment controls the plurality of data transmission interfaces to transmit the target data packet in parallel according to the mode.
The embodiment provides a data transmission method, wherein when an edge service device transmits target data sent by a received data acquisition device to a central service device, a data packet corresponding to each target data is acquired; after a preset time interval, setting a current priority weight coefficient value of each data packet, selecting a plurality of target data packets from the plurality of data packets to be transmitted and respectively distributing the target data packets to data transmission queues of corresponding data transmission interfaces based on the current priority weight coefficient value and the data packet size of the plurality of data packets to be transmitted, wherein the setting of the data transmission interfaces corresponding to each target data packet as a data transmission path is equivalent, and then controlling each data transmission interface to sequentially transmit the target data packets in the corresponding data transmission queues to the central service equipment according to the sequence of the target data packets in the data transmission queues corresponding to each data transmission interface; the data packets in the edge service equipment can be sequentially transmitted to the central service equipment through the corresponding data transmission interfaces according to the sequence allocated to the data transmission queues, so that the same data packet is prevented from being frequently requested to be transmitted in one data transmission interface for multiple times, the risk of data loss in the data transmission interface is reduced, and reasonable planning of data packet transmission in the edge service equipment is realized.
In addition, in this embodiment, the current priority weight coefficient value and the data packet size of each data packet are combined to select a corresponding data transmission interface for each data packet to transmit, and the data packet size reflects the transmission time of the data packet, that is, the current priority weight coefficient value and the transmission time of each data packet are combined to select a corresponding data transmission interface for each data packet to transmit, so that the problem that low-priority data including data is possibly unable to be transmitted due to control of data transmission according to priority alone is avoided. Meanwhile, the current priority weight coefficient value of each data packet to be transmitted is set after each preset time interval, and the priority of each data packet can be adjusted as required so as to further optimize the transmission efficiency of the data packet.
A second embodiment of the present invention relates to a data transmission method, and the main improvement of the present embodiment compared to the first embodiment is that: and constructing a target optimization function by taking the shortest data transmission time as an optimization target to realize the data transmission method.
The specific flow of the data transmission method of this embodiment is shown in fig. 3.
Step 201, when receiving target data sent by a data acquisition device, acquiring a data packet corresponding to each target data. Substantially the same as step 101 of the first embodiment, the description thereof will not be repeated here.
Step 202, comprising the sub-steps of:
Sub-step 2021 sets the current priority weight coefficient value of each packet every time a preset time interval elapses.
Sub-step 2022, using the priority weight coefficient, the packet size, and the network bandwidth, constructs a target optimization function that targets the data transfer time as an optimization target.
Sub-step 2023, obtaining, based on the current priority weight coefficient value, the packet size, and the target optimization function of each packet, the packet selected for transmission by each data transmission interface when the data transmission time is shortest as the target packet, and allocating each target packet to the data transmission queue of the corresponding data transmission interface.
Specifically, a time interval for distributing the data packets is preset in the edge service device, and after the set time interval passes, the edge service device updates the current priority weight coefficient value of each data packet to be transmitted currently.
The edge service equipment also utilizes three variables of priority weight coefficient, data packet size and network bandwidth, and uses data transmission time as an optimization target to construct a target optimization function for distributing data packets for each data transmission interface; then, after updating the current priority weight coefficient value of each data packet to be transmitted currently after a preset time interval, substituting the current priority weight coefficient value and the data packet size of each data packet to be transmitted currently into a target optimization function, and obtaining the data packet selected to be transmitted by each data transmission interface when the data transmission time is minimum, wherein the data packet selected to be transmitted by each data transmission interface is the target data packet corresponding to each data transmission interface, and then adding each target data packet into the data transmission queue of the corresponding data transmission interface.
The following takes a 0-1 dynamic programming method as an example to construct a target optimization function for detailed explanation, which is specifically as follows:
the edge service device uses the priority weight coefficient, the data packet size and the network bandwidth to construct an expression of a target optimization function taking the data transmission time as an optimization target, wherein the expression is as follows:
The constraint conditions of the target optimization function are as follows:
Wherein Time min represents a data transmission Time, n represents a total number of data packets to be transmitted, j represents a total number of data transmission interfaces, k xi represents whether the x-th data transmission interface selects to transmit the i-th data packet, k xi =0 represents that the x-th data transmission interface does not select to transmit the i-th data packet, k xi =1 represents that the x-th data transmission interface selects to transmit the i-th data packet, D i represents a data packet size of the i-th data packet, f i represents a current priority weight coefficient value of the i-th data packet, v x represents a network bandwidth of the x-th data transmission interface, and x=1, 2,3, … …, j. Wherein, the plurality of data transmission interfaces are generally in the same network environment, so that the network bandwidths of the data transmission interfaces are equal, and v x = a when the current network bandwidth is denoted by a; however, the present invention is not limited thereto, and different network bandwidths may be set for different data transmission interfaces.
When the target optimization function is utilized to select a data transmission interface corresponding to each target data packet from a plurality of data packets to be transmitted, the current priority weight coefficient value and the data packet size of each data packet are substituted into the target optimization function based on constraint conditions by taking the minimum data transmission Time min as an optimization target, when the data transmission Time is min is minimum, the target optimization function is solved, the k xi value of each data transmission interface is read, so that the data packet selected for transmission by each data transmission interface can be obtained, the data packet selected for transmission by each data transmission interface is the target data packet corresponding to the data transmission interface, and then each target data packet is added into a data transmission queue of the corresponding data transmission interface.
For example, taking the case that after a preset time interval, the number of data packets to be transmitted is 12 and the number of data transmission interfaces is 4, the expression of the objective optimization function is constructed as follows:
The number of the data packets is larger than that of the data transmission interfaces, at this Time, each data transmission interface must select one data packet to transmit, solve the objective optimization function, and when the data transmission Time Time min is minimum, respectively read the value of k 1i =1, i; k 2i = 1, the value of i; k 3i = 1, the value of i; k 4i = 1, the value of i; therefore, the data packets selected for transmission by each data transmission interface can be obtained, and then the data packets selected for transmission by each data transmission interface are added into the respective data transmission queues.
After a preset time interval again, if new target data is not received in the time interval, repeating the process, and selecting the data packet selected for transmission by each data transmission interface from the rest 8 data packets; if new target data are received in the period, taking 6 received target data as an example, 6 data packets can be obtained, the number of the data packets to be transmitted is 14 at the moment, and the data packets selected for transmission by each data transmission interface from the 14 data packets are selected at the present time. And then repeating the process until all the data packets are distributed to the data transmission queues of the corresponding data transmission interfaces.
And 203, controlling each data transmission interface to sequentially transmit the target data packets in the corresponding data transmission queues to the central service equipment. The steps are substantially the same as the step 103 of the first embodiment, and will not be described again.
In this embodiment, the shortest data transmission time is used as an optimization target, and a target optimization function is constructed by using a priority weight coefficient, a data packet size and a network bandwidth, so that each data packet can be more reasonably distributed to a data transmission interface for data transmission, the problem of data accumulation in edge service equipment is solved, the request of the edge service equipment to the same interface of central service equipment is reduced, bandwidth resources are maximally utilized, the resource utilization rate of the edge service equipment is improved, and the data transmission efficiency between the edge service equipment and the central service equipment is improved.
A third embodiment of the present invention relates to a data transmission method, and the main improvement of the present embodiment compared to the first embodiment is that: the priority weight coefficient value of each data packet is controlled to be gradually increased.
The specific flow of the data transmission method of this embodiment is shown in fig. 4.
Step 301 comprises the sub-steps of:
sub-step 3011, when receiving the image data sent by the data acquisition device, respectively identifying the data type of each target data, and obtaining a data training model corresponding to each target data based on the data type of each target data.
And step 3012, inputting each target data into the corresponding data training model to obtain a data packet corresponding to each target data.
Specifically, after receiving the target data sent by each data acquisition device, the edge service device respectively performs type recognition on each target data to obtain the data type of each target data, where the specific recognition mode is, for example: the corresponding relation between the data acquisition equipment and the data types is preset in the edge service equipment, and the data acquisition equipment can add corresponding data identification information for indicating the data acquisition equipment into the data name of the sent target data, so that the edge service equipment can obtain the data acquisition equipment from which the target data is obtained according to the data name of the target data, and the data types of the target data are identified based on the corresponding relation between the data acquisition equipment and the data types.
The edge service equipment presets a data training model corresponding to target data of each data type, for each target data, after the data type of the target data is identified, the target data is input into the corresponding data training model for training, and after training is finished, a data packet corresponding to the target data can be obtained.
Taking the data acquisition device as an image acquisition device as an example, the target data acquired by the image acquisition device is image data, and the edge service device respectively performs image recognition on each image data after receiving the image data sent by each image acquisition device to obtain the image type of each image data, wherein the specific recognition modes are as follows: the corresponding relation between the image acquisition devices and the image types is preset in the edge service device, each image acquisition device can add a pair of data identification information for indicating the image acquisition device in the data name of the sent image data, so that the edge service device can obtain the image acquisition device from which each image data originates according to the data name of each image data, and the image type of each image data is identified based on the corresponding relation between the image acquisition device and the image type.
The edge service equipment presets a data training model corresponding to the image data of each image type, for each image data, after the image type of the image data is identified, the image data is input into the corresponding data training model for training, and after training is finished, the data training model outputs a plurality of characteristic parameter values contained in the image data, and the characteristic parameter values form a data packet corresponding to the image data.
Step 302, comprising the sub-steps of:
In sub-step 3021, every time a preset time interval elapses, the current priority weight coefficient value of each data packet is set to be gradually increased from the initial priority weight coefficient value to a preset weight threshold value according to a preset manner.
Specifically, after obtaining a data packet corresponding to each target data, the edge service device sets an initial priority weight coefficient value of the data packet; after a preset time interval, updating the current priority weight coefficient of the data packet to be transmitted, and controlling the current priority weight coefficient of each data packet to be gradually increased to a preset weight threshold value from the initial priority weight coefficient value according to a preset mode; that is, for each data packet to be transmitted, when the data packet is not allocated to the data transmission queue of the data transmission interface, the priority weight coefficient value of the data packet is controlled to be gradually increased until the priority weight coefficient value is increased to a preset weight threshold value. The initial priority weight coefficient value of each data packet may be the same, or the corresponding initial priority weight coefficient value may be set according to the type of the data packet.
The manner in which the priority weight coefficient value of the edge service device controls the data packet to gradually increase from the initial priority weight coefficient value to the preset weight threshold is as follows: after a preset time interval, controlling the priority weight coefficient value of the data packet to increase a preset step value until the priority weight coefficient value is increased to a preset weight threshold value; or selecting a plurality of numerical points between the initial priority weight coefficient value and a preset weight threshold value, and after each preset time interval, increasing the priority weight coefficient value of the control data packet to the value of the next numerical point until the priority weight coefficient value is increased to the preset weight threshold value. The preset weight threshold is maximum 1, taking the preset weight threshold as 1, the time interval as two seconds, and the initial priority weight coefficient value as 0.167 as an example, selecting a plurality of numerical points between 0.167 and 1 including 0.333, 0.5, 0.667, and 0.833, and after setting the initial priority weight coefficient value of the data packet as 0.167, controlling the priority weight coefficient value to be increased to the next numerical point every two seconds, thereby being capable of being increased from 0.167 to 1 after 10 seconds.
It should be noted that, if any data packet is already allocated to the data transmission queue of the corresponding data transmission interface, the priority weight coefficient of the data packet may be controlled to stop increasing.
In sub-step 3022, a plurality of target data packets are selected from the plurality of data packets to be transmitted and respectively allocated to the corresponding data transmission interface based on the current priority weight coefficient value and the data packet size of the plurality of data packets to be transmitted. Substantially the same as step 102 in the first embodiment, the main difference is that: in the step 3021, each time a preset time interval elapses, a current priority weight coefficient value of each data packet is set, the initial priority weight coefficient value is gradually increased to a preset weight threshold value according to a preset manner, in this step, when a plurality of target data packets are selected from a plurality of data packets to be transmitted and are respectively allocated to a corresponding data transmission interface, the current priority weight coefficient value of each data packet is continuously increased, that is, the priority of each data packet is higher and higher, so that the probability that each data packet is selected for transmission is higher as time increases, and the problem that the data packet cannot be transmitted in a period of time due to too low priority is avoided.
Step 303, controlling each data transmission interface to sequentially transmit the target data packet in the corresponding data transmission queue to the central service device. The steps are substantially the same as the step 103 of the first embodiment, and will not be described again.
In this embodiment, each time a preset time interval passes, a current priority weight coefficient value of each data packet is set, and the initial priority weight coefficient value is gradually increased to a preset weight threshold value according to a preset mode, that is, the priority weight coefficient of each data packet is controlled to be dynamically increased along with time; when a plurality of target data packets are selected from a plurality of data packets to be transmitted for transmission, the higher the priority weight coefficient value of the data packets is, the higher the priority of the data packets is, the higher the probability that the data packets with higher priority are selected for transmission is, and the priority weight coefficient value of each data packet is continuously increased along with time, so that the probability that each data packet is selected for transmission is gradually increased along with the time, and the problem that the data packets with too low priority cannot be transmitted in a period of time is avoided.
A fourth embodiment of the present invention relates to a data transmission method, and the main improvement of the present embodiment compared to the first embodiment is that: the judgment of whether the target data transmission interfaces with the number of the target feature data to be transmitted being larger than the preset number threshold value in the allocated target feature data exist in the plurality of data transmission interfaces is increased.
The specific flow of the data transmission method of this embodiment is shown in fig. 5.
Step 401, when receiving target data sent by a data acquisition device, acquiring a data packet corresponding to each target data. Substantially the same as step 101 of the first embodiment, the description thereof will not be repeated here.
Step 402, setting a current priority weight coefficient value of each data packet every time a preset time interval passes, and selecting a plurality of target data packets from the plurality of data packets to be transmitted based on the current priority weight coefficient values and the data packet sizes of the plurality of data packets to be transmitted, and respectively distributing the plurality of target data packets to data transmission queues of corresponding data transmission interfaces. The steps are substantially the same as the step 102 of the first embodiment, and will not be described in detail herein.
Step 403, determining whether there are target data transmission interfaces with the number of target feature data to be transmitted being greater than or equal to a preset number threshold value among the allocated target feature data in the plurality of data transmission interfaces. If yes, go to step 404; if not, go to step 405.
Step 404, allocating at least one target data packet in the data transmission queues of the target data transmission interface to the data transmission queues of the data transmission interface, where the number of target data packets to be transmitted is smaller than the preset number threshold.
Specifically, after selecting a plurality of target data packets from a plurality of data packets to be transmitted each time and respectively distributing the target data packets to the data transmission queues of the corresponding data transmission interfaces, judging whether the number of the target data packets to be transmitted in the data transmission queues of each data transmission interface is larger than or equal to a preset number threshold value, if the number of the target data packets to be transmitted in the data transmission queues of a certain data transmission interface is larger than or equal to the preset number threshold value, indicating that the data transmission interface has data congestion phenomenon, and marking the data transmission interface as a target data transmission interface; the preset number threshold may be equal to the number of data transmission interfaces in the edge service device.
For each target data transmission interface, the number of target data packets to be transmitted in the data transmission queues of other data transmission interfaces outside the target data transmission interface is obtained, the data transmission interfaces with the number of the target data packets to be transmitted being smaller than a preset number threshold value in the data transmission queues are selected, then at least one target data packet to be transmitted in the data transmission queues of the target data transmission interface is distributed to the data transmission queues of the selected data transmission interface (namely, the data transmission interfaces with the number of the target data packets to be transmitted being smaller than the preset number threshold value in the data transmission queues) for transmission, so that the target data packets to be transmitted in the data transmission queues of the target data transmission interface can be transmitted as soon as possible, and the problem of data congestion in the target data transmission interface is solved. The target data packet reassigned by the data transmission queue of the target data transmission interface may be a portion exceeding a preset number threshold.
Step 405, control each data transmission interface to sequentially transmit the target data packet in the corresponding data transmission queue to the central service device. The steps are substantially the same as the step 103 of the first embodiment, and will not be described again.
In this embodiment, after each time a target data packet is allocated to a data transmission queue of a data transmission interface, it is determined whether the number of target data packets to be transmitted in the data transmission queues of the data transmission interfaces is greater than or equal to a preset number threshold, and for a target data transmission interface in which the number of target data packets to be transmitted in the data transmission queues is greater than or equal to the preset number threshold, at least one target data packet in the data transmission queues of the target data transmission interface may be allocated to a data transmission queue of the data transmission interface in which the number of target data packets to be transmitted is less than the preset number threshold, so as to ensure that the transmission of the target data packets to be transmitted in the data transmission queues of the target data transmission interface may be completed as soon as possible, thereby solving the problem of data congestion in the target data transmission interface.
A fifth embodiment of the present invention relates to an edge service device, which may be a single server or a server group, referring to fig. 6, and includes: at least one processor 10; and a memory 20 communicatively coupled to the at least one processor 10; wherein the memory 20 stores instructions executable by the at least one processor 10, the instructions being executable by the at least one processor 10 to enable the at least one processor 10 to perform the data transmission method of any one of the first to fourth embodiments.
Where the memory 20 and the processor 10 are connected by a bus, the bus may comprise any number of interconnected buses and bridges, the buses connecting the various circuits of the one or more processors 10 and the memory 20 together. The bus may also connect various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface between the bus and the transceiver. The transceiver may be one element or may be a plurality of elements, such as a plurality of receivers and transmitters, providing a means for communicating with various other apparatus over a transmission medium. The data processed by the processor 10 is transmitted over a wireless medium via an antenna, which further receives the data and transmits the data to the processor 10.
The processor 10 is responsible for managing the bus and general processing and may also provide various functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. And memory 20 may be used to store data used by processor 10 in performing operations.
A sixth embodiment of the present invention relates to a data transmission system, please refer to fig. 1, the data transmission system includes: at least one edge service device 1 (one in the figure as an example), a plurality of data collection devices 2, and a central service device 3 in the fifth embodiment; each edge service device 1 corresponds to at least one data acquisition device 2, and each edge service device 1 is in communication connection with the corresponding data acquisition device 2, each edge service device 1 has a plurality of data transmission interfaces 11, and each edge service device 1 performs data transmission with the central service device through the plurality of data transmission interfaces 11. Wherein the edge service device 1 may be a single server or a group of servers; the data acquisition device 2 may be a terminal device with temperature, speed, voice and image acquisition functions, for example, the data acquisition device is an image acquisition device (for example, a camera, a video recorder, etc.), and the target data acquired by the image acquisition device is image data; the central server device 3 may then be a server group comprising a plurality of servers.
In this embodiment, the edge service device 1 includes a plurality of data transmission interfaces 11, the central service device 3 is provided with a plurality of data service interfaces 31, the data transmission interfaces 11 are correspondingly connected and communicated with the data service interfaces 31, and data transmission is performed between the edge service device 1 and the central service device 3 through a channel formed between the data transmission interfaces 11 and the data service interfaces 31. The central server device 3 is further provided with an information transmission interface 32, and the edge service device 1 transmits the device information and the device state of the edge service device 1 and the device information and the device state of each data acquisition device 2 to the central server device 3 through the information transmission interface 32, and when the device information or the device state of the edge service device 1 or any data acquisition device 2 changes, the edge service device transmits the changed device information or the changed device state to the central service device 3 again through the information transmission interface 32. The device information comprises sn, ip, mac and model of the device, the device state comprises heartbeat information of the device, whether the device is online, whether the device is activated, and the like.
While the preferred embodiments of the present invention have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide yet further embodiments.
These and other changes can be made to the embodiments in light of the above detailed description. In general, in the claims, the terms used should not be construed to be limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.
Claims (9)
1. A data transmission method, which is characterized by being applied to edge service equipment, wherein the edge service equipment comprises a plurality of data transmission interfaces; the method comprises the following steps:
When target data sent by data acquisition equipment are received, acquiring data packets corresponding to the target data;
setting a current priority weight coefficient value of each data packet every time a preset time interval passes;
constructing a target optimization function taking data transmission time as an optimization target by utilizing the priority weight coefficient, the data packet size and the network bandwidth;
based on the current priority weight coefficient value, the data packet size and the target optimization function of each data packet, obtaining the data packet selected to be transmitted by each data transmission interface when the data transmission time is shortest as a target data packet, and distributing each target data packet to a data transmission queue of the corresponding data transmission interface;
And controlling each data transmission interface to sequentially transmit the target data packet in the corresponding data transmission queue to the central service equipment.
2. The method according to claim 1, wherein setting the current priority weight coefficient value of each of the data packets every predetermined time interval has elapsed comprises:
setting the current priority weight coefficient value of each data packet to gradually increase to a preset weight threshold value from the initial priority weight coefficient value according to a preset mode every time a preset time interval passes.
3. The data transmission method according to claim 1, wherein the expression of the objective optimization function is:
The constraint conditions of the target optimization function are as follows:
Wherein Time min represents a data transmission Time, n represents a total number of data packets to be transmitted, j represents a total number of data transmission interfaces, k xi represents whether an xth data transmission interface selects to transmit an ith data packet, k xi =0 represents that an xth data transmission interface does not select to transmit an ith data packet, k xi =1 represents that an xth data transmission interface selects to transmit an ith data packet, D i represents a data packet size of an ith data packet, f i represents a current priority weight coefficient value of an ith data packet, v x represents a network bandwidth of an xth data transmission interface, and x=1, 2, 3, … …, j.
4. The method according to claim 1, wherein after setting a current priority weight coefficient value of each of the data packets at each of the elapsed preset time intervals, and selecting a plurality of target data packets from the plurality of data packets to be transmitted to be respectively allocated to the data transmission queues of the corresponding data transmission interfaces based on the current priority weight coefficient values and the data packet sizes of the plurality of data packets to be transmitted, further comprising:
judging whether target data transmission interfaces with the number of target data packets to be transmitted in a data transmission queue being greater than or equal to a preset number threshold exist in the plurality of data transmission interfaces;
If so, at least one target data packet in the data transmission queues of the target data transmission interfaces is distributed to the data transmission queues of the data transmission interfaces, wherein the number of the target data packets to be transmitted is smaller than a preset number threshold value.
5. The data transmission method according to claim 4, wherein the preset number threshold is equal to the number of data transmission interfaces.
6. The data transmission method according to claim 1, wherein the preset time interval is smaller than a minimum transmission time of the plurality of target data packets to be transmitted.
7. The data transmission method according to claim 1, wherein obtaining the data packet corresponding to each of the target data includes:
respectively identifying the data type of each target data, and obtaining a data training model corresponding to each target data based on the data type of each target data;
and inputting each target data into the corresponding data training model to obtain a data packet corresponding to each target data.
8. An edge serving 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 to enable the at least one processor to perform the data transmission method of any one of claims 1 to 7.
9. A data transmission system, comprising: at least one edge service device, a plurality of data acquisition devices, and a central service device of claim 8; each edge service device corresponds to at least one data acquisition device, and each edge service device is in communication connection with the corresponding data acquisition device, each edge service device is provided with a plurality of data transmission interfaces, and each edge service device performs data transmission with the central service device through the plurality of data transmission interfaces.
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