CN113783798A - 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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- 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
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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
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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 target data sent by data acquisition equipment are received, acquiring a data packet corresponding to each target data; setting a current priority weight coefficient value of each data packet every time interval is preset, and selecting a plurality of target data packets from the plurality of data packets to be transmitted to be respectively distributed to data transmission queues of corresponding data transmission interfaces on the basis of 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. 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 invention relates to the technical field of data transmission, in particular to a data transmission method and system and edge service equipment.
Background
With the development of the edge computing technology, big data processing can be performed through a central server-edge server architecture system, and the problem of insufficient cloud computing service capacity 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 collected by the terminal equipment, and sends the processed data to the central server through a network for unified management.
However, when data is transmitted by the edge server, the edge server generally transmits the data point to point with the central server, the same data in the edge server frequently requests to be sent on the interface in real time, and when the number of times of requesting the interface exceeds the set maximum limit number, the data in the interface is lost. Moreover, when the resources of the edge server are limited, a large amount of data may be 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 based on the priority alone may cause that the data with low priority cannot be transmitted within a period of time, and even may cause that the data of the central server is missing within a period of time.
Disclosure of Invention
The invention aims to provide a data transmission method and 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 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 interfaces is reduced, and the 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, and the method includes: when target data sent by data acquisition equipment are received, acquiring a data packet corresponding to each target data; setting a current priority weight coefficient value of each data packet every time interval is preset, and selecting a plurality of target data packets from the plurality of data packets to be transmitted to be respectively distributed to data transmission queues of corresponding data transmission interfaces on the basis of 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, which comprises 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 present invention also provides a data transmission system, comprising: 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, 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 a data packet corresponding to each target data; after each 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 to be respectively distributed 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, equivalently setting the data transmission interface corresponding to each target data packet as a data transmission path, 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; namely, a plurality of 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 distributed to the data transmission queue, 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 the reasonable planning of data packet transmission in the edge service equipment is realized.
In addition, in this embodiment, a corresponding data transmission interface is selected for each data packet to transmit by combining the current priority weight coefficient value of each data packet and the size of the data packet, where the size of the data packet 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 the corresponding data transmission interface for each data packet to transmit, so as to avoid the problem that low-priority data including data that may not be transmitted due to data transmission being controlled only according to priority. Meanwhile, the current priority weight coefficient value of each data packet to be transmitted can be set after a preset time interval, and the priority of each data packet can be adjusted as required, so that the transmission efficiency of the data packets can be further optimized.
In one embodiment, the setting the current priority weight coefficient value of each of the data packets every time the preset time interval elapses includes:
and setting the current priority weight coefficient value 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 every time when 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 sizes of the data packets, a plurality of target data packets from the plurality of data packets to be transmitted to be respectively allocated to data transmission queues of corresponding data transmission interfaces includes:
constructing a target optimization function taking data transmission time as an optimization target by using the priority weight coefficient, the size of the data packet 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 size of the data packet 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 objective optimization function are as follows:
wherein, TimeminRepresenting the data transmission time, n representing the total number of data packets to be transmitted, j representing the total number of data transmission interfaces, kxiIndicating whether the x-th data transmission interface selects to transmit the i-th data packet, kxi0 means that the x-th data transmission interface does not select to transmit the ith data packet, k xi1 indicates that the x-th data transmission interface selects to transmit the ith data packet, DiIndicating the packet size of the ith said packet, fiA current priority weight coefficient value, v, representing the ith said packetxThe network bandwidth of the xth data transmission interface is represented, where x is 1, 2, 3, … …, j.
In one embodiment, after setting the current priority weighting factor value of each data packet at each preset time interval, 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 weighting factor value of the plurality of data packets to be transmitted and the size of the data packet, the method further includes:
judging whether a target data transmission interface with the number of the target data packets to be transmitted in the data transmission queue being greater than or equal to a preset number threshold exists in the plurality of data transmission interfaces;
and if so, distributing at least one target data packet in the data transmission queue of the target data transmission interface to the data transmission queue of the data transmission interface of which 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 the minimum transmission time of a plurality of target data packets to be transmitted.
In one embodiment, obtaining a 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.
Drawings
Fig. 1 is a schematic diagram of a data transmission system to which a data transmission method according to a first embodiment of the present invention is applied;
fig. 2 is a detailed flowchart of a data transmission method according to a first embodiment of the present invention;
fig. 3 is a detailed flowchart of a data transmission method according to a second embodiment of the present invention;
fig. 4 is a detailed flowchart of a data transmission method according to a third embodiment of the present invention;
fig. 5 is a detailed flowchart of a data transmission method according to a fourth embodiment of the present invention;
fig. 6 is a schematic diagram of an edge service apparatus according to a fifth embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings in order to more clearly understand 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 present invention, but are merely intended to illustrate the spirit of the technical solution of the present invention.
In the following description, for the purposes of illustrating 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 the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.
Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising," are to be understood as an open, inclusive meaning, i.e., as being interpreted to mean "including, but not limited to," unless the context requires otherwise.
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, the 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 clearly illustrating the structure and operation of the present invention, directional terms will be used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be construed as words of convenience and should not be construed as limiting terms.
The first embodiment of the present invention relates to a data transmission method, which is applied to edge service equipment, where the edge service equipment may transmit received target data sent by data acquisition equipment to central service equipment by using the data transmission method in this example, where the edge service equipment may be a single server or a server group; the data acquisition device may be a terminal device having temperature, speed, voice, and image acquisition functions, for example, the data acquisition device is an image acquisition device (e.g., a camera, a video recorder, etc.), and the target data acquired by the image acquisition device is image data at this time; the central server device may then be a server group comprising a plurality of servers.
Referring to fig. 1, the data transmission system includes at least one edge service device 1 (taking one as an example in the figure), a plurality of data acquisition devices 2, and a central service device 3, where the edge service device 1 is respectively in communication connection with the plurality of data acquisition devices 2, the edge service device 1 is also in communication connection with the central service device 3, 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 and the data service interfaces 31 are correspondingly connected for communication, 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 or a video recorder, and the central server device 3 may be a server group including a plurality of servers. It should be noted that the central server device 3 is further provided with an information transmission interface 32, the edge service device 1 transmits the device information and the device status of itself and the device information and the device status 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 status of itself or any data acquisition device 2 changes, the edge service device 1 retransmits the changed device information or the changed device status to the central server device 3 through the information transmission interface 32. The device information includes sn number, ip address, mac address of the device, model of the device, and the like, and the device status includes heartbeat information of the device, whether the device is online, whether the device is activated, and the like.
Fig. 2 shows a specific flow of the data transmission method according to the present embodiment.
Specifically, the data acquisition device has a data acquisition function, and can acquire data to obtain target data in a set application scene; 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 a 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 the data acquisition equipment as the image acquisition equipment as an example, the plurality of image acquisition equipment are respectively in communication connection with the edge service equipment; each image acquisition device can acquire images in a set application scene, for example, in an intelligent catering scene, and can acquire images of automatically produced food such as dumplings, pizza and fried chicken according to a set frequency; in an express delivery transportation scene, the image acquisition equipment can acquire an express delivery image according to a set frequency; after the image data are collected by each image collecting device, the collected image data are sent to the edge service device, the edge service device analyzes each image data after receiving a plurality of image data from each image collecting device, characteristic data packets corresponding to each image data are respectively obtained, and the characteristic data packets corresponding to each image data are data packets needing to be transmitted to the central service device.
And 102, setting the 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 to be respectively distributed to the data transmission queues of the 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.
Specifically, M represents the number of data transmission interfaces, and N represents the number of data packets to be transmitted currently in the edge service device; the method comprises the steps that a time interval for distributing data packets is preset in edge service equipment, and after the set time interval, the edge service equipment updates current priority weight coefficient values of N data packets to be transmitted currently; 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 sizes of the data packets, wherein the M target data packets correspond to the M data transmission interfaces one by one, then respectively distributing the selected target data packets to data transmission queues of the corresponding data transmission interfaces by the edge service equipment, and the data transmission interfaces corresponding to the target data packets are data transmission paths of the target data packets. When the number N of the data packets to be transmitted is less than or equal to the number M of the data transmission interfaces, the N data packets to be transmitted can be directly allocated to the data transmission queues of different data transmission interfaces.
After the preset time interval again, repeating the process, reselecting M data packets from the plurality of data packets to be transmitted currently as target data packets, wherein the M target data packets correspond to the M data transmission interfaces one by one, and adding the M selected target data packets into data transmission queues of the corresponding data transmission interfaces respectively. The data packet to be transmitted 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 selected target data packets, 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 is used as the next time interval; however, the minimum transmission time of the N transmission times corresponding to the N packets may be directly set as the fixed time interval.
And 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 the target data packets in the 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 in which the target data packets are allocated to the queue, and after the transmission of one target data packet in the data transmission queue of the data transmission interface is completed, the edge service device controls the data transmission interface to transmit the next target data packet in the data transmission queue to the central service device after receiving feedback information indicating that the reception is completed, which is returned by the central service device. The edge service equipment controls a 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 transmitting received target data sent by data acquisition equipment to central service equipment, edge service equipment acquires a data packet corresponding to each target data; after each 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 to be respectively distributed 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, equivalently setting the data transmission interface corresponding to each target data packet as a data transmission path, 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; namely, a plurality of 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 distributed to the data transmission queue, 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 the reasonable planning of data packet transmission in the edge service equipment is realized.
In addition, in this embodiment, a corresponding data transmission interface is selected for each data packet to transmit by combining the current priority weight coefficient value of each data packet and the size of the data packet, where the size of the data packet 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 the corresponding data transmission interface for each data packet to transmit, so as to avoid the problem that low-priority data including data that may not be transmitted due to data transmission being controlled only according to priority. Meanwhile, the current priority weight coefficient value of each data packet to be transmitted can be set after a preset time interval, and the priority of each data packet can be adjusted as required, so that the transmission efficiency of the data packets can be further optimized.
A second embodiment of the present invention relates to a data transmission method, and compared with the first embodiment, the present embodiment is mainly improved in 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 the present embodiment is shown in fig. 3.
Specifically, a time interval for data packet allocation is preset in the edge service device, and after the set time interval elapses, the edge service device updates the current priority weight coefficient value of each data packet to be currently transmitted.
The edge service equipment also constructs a target optimization function for distributing data packets for each data transmission interface by using three variables of a priority weight coefficient, a data packet size and a network bandwidth and taking data transmission time as an optimization target; and then, after updating the current priority weight coefficient value of each data packet to be transmitted currently every preset time interval, substituting the current priority weight coefficient value of each data packet to be transmitted currently and the size of the data packet into a target optimization function, obtaining the data packet which is selected to be transmitted by each data transmission interface when the data transmission time is minimum, wherein the data packet which is 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 an example of constructing an objective optimization function by using a 0-1 dynamic programming method as an example, and details are as follows:
the edge service device utilizes the priority weight coefficient, the size of the data packet and the network bandwidth to construct an expression of an objective optimization function taking the data transmission time as an optimization target, wherein the expression is as follows:
the constraint conditions of the objective optimization function are as follows:
wherein, TimeminRepresenting the data transmission time, n representing the total number of data packets to be transmitted, j representing the total number of data transmission interfaces, kxiIndicates whether the x-th data transmission interface selects to transmit the i-th data packet, kxi0 means that the ith data packet, k, is not selected to be transmitted by the xth data transmission interface xi1 indicates that the xth data transmission interface selects to transmit the ith data packet, DiIndicating the packet size of the ith packet, fiIs shown asCurrent priority weight coefficient value, v, of i packetsxThe network bandwidth of the xth data transmission interface is represented, where x is 1, 2, 3, … …, j. Wherein, a plurality of data transmission interfaces are generally in the same network environment, so that the network bandwidth of each data transmission interface is equal, and a represents the current network bandwidth, then vxA; however, the present invention is not limited to this, and different network bandwidths may be set for different data transmission interfaces.
When the target optimization function is used for selecting the data transmission interface corresponding to each target data packet from a plurality of data packets to be transmitted, the data transmission Time is usedminThe minimum is an optimization target, based on constraint conditions, the current priority weight coefficient value of each data packet and the size of the data packet are substituted into a target optimization function, and the Time of data transmission isminWhen the minimum, the objective optimization function is solved, and k of each data transmission interface is readxiAnd the data packets selectively transmitted by each data transmission interface can be obtained, the data packets selectively transmitted by each data transmission interface are target data packets corresponding to the data transmission interface, and then the target data packets are added into the data transmission queues of the corresponding data transmission interfaces.
For example, taking 12 data packets to be transmitted and 4 data transmission interfaces as an example after a preset time interval, the expression of the constructed target optimization function is as follows:
the number of the data packets is larger than that of the data transmission interfaces, each data transmission interface needs to select one data packet for transmission at the moment, the objective optimization function is solved, and the data transmission Time isminAt minimum, read k separately1iWhen 1, the value of i; k is a radical of2iWhen 1, the value of i; k is a radical of3iWhen 1, the value of i; k is a radical of4iWhen 1, the value of i; thus, the data packets selectively transmitted by each data transmission interface can be obtained and then are transmittedThe data transmission interfaces select the transmitted data packets to be added into respective data transmission queues.
After the preset time interval again passes, if new target data are not received in the period, repeating the process, and selecting the data packets selected by each data transmission interface from the remaining 8 data packets; if new target data is received in this period, taking 6 received target data as an example, 6 data packets can be obtained, the number of the data packets to be transmitted at this time is 14, and the data packet selected for transmission by each data transmission interface is selected from the 14 data packets at this time. And then, repeating the process until all the data packets are distributed to the data transmission queue of the corresponding data transmission interface.
And step 203, controlling each data transmission interface to sequentially transmit the target data packet in the corresponding data transmission queue to the central service equipment. This step is substantially the same as step 103 of the first embodiment, and will not be described herein again.
In the embodiment, the shortest data transmission time is taken as an optimization target, and a target optimization function is constructed by using the priority weight coefficient, the data packet size and the 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 the edge service equipment is solved, the requests of the edge service equipment to the same interface of the central service equipment are reduced, bandwidth resources are utilized to the maximum extent, 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 compared with the first embodiment, the present embodiment is mainly improved in that: and controlling the priority weight coefficient value of each data packet to gradually increase.
The specific flow of the data transmission method of this embodiment is shown in fig. 4.
in sub-step 3011, when receiving image data sent by the data acquisition device, identifying data types of each target data, and obtaining a data training model corresponding to each target data based on the data types of each target data.
And a substep 3012, inputting each target data into the corresponding data training model to obtain a data packet corresponding to each target data.
Specifically, after receiving target data sent by each data acquisition device, the edge service device performs type identification on each target data, to obtain a data type of each target data, where the specific identification method is, for example: the corresponding relation between the data acquisition equipment and the data type 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 comes according to the data name of the target data, and identify the data type of the target data based on the corresponding relation between the data acquisition equipment and the data type.
The edge service device presets a data training model corresponding to the 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 the 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, at this time, the target data acquired by the image acquisition device is image data, and after receiving the image data sent by each image acquisition device, the edge service device performs image recognition on each image data to obtain the image type of each image data, where the specific recognition mode is, for example: the corresponding relation between the image acquisition equipment and the image type is preset in the edge service equipment, and the data identification information used for indicating the image acquisition equipment can be added into the data name of the sent image data by each image acquisition equipment, so that the edge service equipment can obtain the image acquisition equipment of the source according to the data name of each image data and identify the image type of each image data based on the corresponding relation between the image acquisition equipment and the image type.
The edge service equipment presets a data training model corresponding to 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, after the training is finished, the data training model outputs a plurality of characteristic parameter values contained in the image data, and the plurality of characteristic parameter values form a data packet corresponding to the image data.
in sub-step 3021, each time a predetermined time interval elapses, the current priority weight coefficient value of each packet is set to be gradually increased from the initial priority weight coefficient value to a predetermined weight threshold value in a predetermined manner.
Specifically, after acquiring a data packet corresponding to each target data, the edge service device sets an initial priority weight coefficient value of the data packet; after each 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 the preset weight threshold value. The initial priority weight coefficient value of each data packet may be the same, or a corresponding initial priority weight coefficient value may be set according to the type of the data packet.
The way of gradually increasing the value of the priority weight coefficient of the edge service device control packet from the initial value of the priority weight coefficient to the preset weight threshold is, for example: after each preset time interval, controlling the priority weight coefficient value of the data packet to increase by 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, controlling the priority weight coefficient value of the data packet to be increased to the next numerical point value until the priority weight coefficient value is increased to the preset weight threshold value. The preset weight threshold value is at most 1, taking the preset weight threshold value as 1, the time interval as two seconds and the initial priority weight coefficient value as 0.167 as an example, a plurality of value points including 0.333, 0.5, 0.667 and 0.833 are selected between 0.167 and 1, and after the initial priority weight coefficient value of the data packet is set as 0.167, the priority weight coefficient value is controlled to be increased to the next value point every two seconds, so that the priority weight coefficient value can be increased to 1 from 0.167 after 10 seconds.
It should be noted that, after any data packet is already allocated to the data transmission queue of the corresponding data transmission interface, the priority weighting factor of the data packet may be controlled to stop increasing.
And a substep 3022, selecting a plurality of target data packets from the plurality of data packets to be transmitted and respectively allocating the target data packets to 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. The same as step 102 in the first embodiment, the main difference is that: in the sub-step 3021, each time interval that is preset 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 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 corresponding data transmission interfaces, the current priority weight coefficient value of each used 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 and higher along with the increase of time, and the problem that the data packet cannot be transmitted within a period of time due to the fact that the priority of the data packet is too low is avoided.
And 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. This step is substantially the same as step 103 of the first embodiment, and will not be described herein again.
In this embodiment, each time a preset time interval elapses, the 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 in a preset manner, that is, the priority weight coefficient of each data packet is controlled to dynamically increase with time; when a plurality of target data packets are selected from a plurality of data packets to be transmitted for transmission, the larger the priority weight coefficient value of the data packet is, the higher the priority is, the higher the probability that the data packet with the higher priority is 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 packet with the 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 compared with the first embodiment, the present embodiment is mainly improved in that: the judgment of whether the target data transmission interfaces with the quantity of the target characteristic data to be transmitted in the distributed target characteristic data larger than the preset quantity threshold exist in the plurality of data transmission interfaces is added.
The specific flow of the data transmission method of the present embodiment is shown in fig. 5.
Specifically, after a plurality of target data packets are selected from a plurality of data packets to be transmitted each time and are respectively distributed to data transmission queues of corresponding data transmission interfaces, whether the number of the target data packets to be transmitted in the data transmission queues of each data transmission interface is greater than or equal to a preset number threshold value or not is respectively judged, if the number of the target data packets to be transmitted in the data transmission queues of a certain data transmission interface is greater than or equal to the preset number threshold value, a data congestion phenomenon occurs in the data transmission interface, and the data transmission interface is marked as the 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 in the data transmission queues smaller than a preset number threshold are selected, and then at least one target data packet to be transmitted in the data transmission queues of the target data transmission interfaces is distributed to the data transmission queues of the selected data transmission interfaces (namely the data transmission interfaces with the number of the target data packets to be transmitted in the data transmission queues smaller than the preset number threshold) for transmission, so that the target data packets to be transmitted in the data transmission queues of the target data transmission interfaces can be transmitted as soon as possible, and the problem of data congestion in the target data transmission interfaces is solved. The target data packet reallocated by the data transmission queue of the target data transmission interface may be a portion exceeding a preset number threshold.
And 405, controlling each data transmission interface to sequentially transmit the target data packet in the corresponding data transmission queue to the central service device. This step is substantially the same as step 103 of the first embodiment, and will not be described herein again.
In this embodiment, after allocating the target data packets to the data transmission queue of the data transmission interface each time, it is determined whether the number of the target data packets to be transmitted in the data transmission queue of each data transmission interface is greater than or equal to the preset number threshold, and for the target data transmission interface whose number of the target data packets to be transmitted in the data transmission queue is greater than or equal to the preset number threshold, at least one target data packet in the data transmission queue of the target data transmission interface may be allocated to the data transmission queue of the data transmission interface whose number of the target data packets to be transmitted is less than the preset number threshold, so as to ensure that the target data packets to be transmitted in the data transmission queue of the target data transmission interface can be transmitted 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, where the edge service device may be a single server or a server group, and referring to fig. 6, the edge service device includes: at least one processor 10; and a memory 20 communicatively coupled to the at least one processor 10; the memory 20 stores instructions executable by the at least one processor 10, and the instructions are executed by the at least one processor 10 to enable the at least one processor 10 to execute the data transmission method according to any one of the first to fourth embodiments.
Where memory 20 and processor 10 are coupled by a bus, the bus may comprise any number of interconnected buses and bridges that couple one or more of the various circuits of processor 10 and memory 20 together. The bus may also connect various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface provides an interface between the bus and the transceiver. The transceiver may be one element or 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, and referring to fig. 1, 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 in the fifth embodiment; each edge service device 1 corresponds to at least one data acquisition device 2, each edge service device 1 is in communication connection with the corresponding data acquisition device 2, each edge service device 1 is provided with a plurality of data transmission interfaces 11, and each edge service device 1 performs data transmission with a central service device through the plurality of data transmission interfaces 11. Wherein the edge service device 1 can be a single server or a server group; the data acquisition device 2 may be a terminal device having temperature, speed, voice and image acquisition functions, for example, the data acquisition device is an image acquisition device (such as a camera, a video recorder, etc.), and the target data acquired by the image acquisition device is image data at this time; the central server apparatus 3 may be a server group including 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 and the data service interfaces 31 are correspondingly connected and communicated, 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. It should be noted that the central server device 3 is further provided with an information transmission interface 32, the edge service device 1 transmits the device information and the device status of itself and the device information and the device status 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 status of itself or any data acquisition device 2 changes, the edge service device 1 retransmits the changed device information or the changed device status to the central server device 3 through the information transmission interface 32. The device information includes sn number, ip address, mac address of the device, model of the device, and the like, and the device status includes 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 (10)
1. A data transmission method is characterized in that the method is applied to edge service equipment, and 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 a data packet corresponding to each target data;
setting a current priority weight coefficient value of each data packet every time interval is preset, and selecting a plurality of target data packets from the plurality of data packets to be transmitted to be respectively distributed to data transmission queues of corresponding data transmission interfaces on the basis of 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.
2. The data transmission method according to claim 1, wherein the setting the current priority weight coefficient value of each data packet every predetermined time interval includes:
and setting the current priority weight coefficient value 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 every time when a preset time interval passes.
3. The data transmission method according to claim 1 or 2, wherein the selecting, based on the current priority weight coefficient values of the plurality of data packets to be transmitted and the sizes of the data packets, 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 comprises:
constructing a target optimization function taking data transmission time as an optimization target by using the priority weight coefficient, the size of the data packet 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 size of the data packet 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.
4. The data transmission method of claim 3, wherein the expression of the objective optimization function is:
the constraint conditions of the objective optimization function are as follows:
wherein, TimeminRepresenting the data transmission time, n representing the total number of data packets to be transmitted, j representing the total number of data transmission interfaces, kxiIndicating whether the x-th data transmission interface selects to transmit the i-th data packet, kxi0 means that the x-th data transmission interface does not select to transmit the ith data packet, kxi1 indicates that the x-th data transmission interface selects to transmit the ith data packet, DiIndicating the packet size of the ith said packet, fiA current priority weight coefficient value, v, representing the ith said packetxThe network bandwidth of the xth data transmission interface is represented, x ═ 1, 2, 3, and.
5. The data transmission method according to claim 1, wherein, after setting the current priority weight coefficient value of each data packet at each preset time interval, 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 of the plurality of data packets to be transmitted and the size of the data packets, the method further comprises:
judging whether a target data transmission interface with the number of the target data packets to be transmitted in the data transmission queue being greater than or equal to a preset number threshold exists in the plurality of data transmission interfaces;
and if so, distributing at least one target data packet in the data transmission queue of the target data transmission interface to the data transmission queue of the data transmission interface of which the number of the target data packets to be transmitted is smaller than a preset number threshold value.
6. The data transmission method according to claim 5, wherein the preset number threshold is equal to the number of data transmission interfaces.
7. 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.
8. 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.
9. An edge service apparatus, 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 transfer method of any one of claims 1 to 8.
10. A data transmission system, comprising: at least one of the edge service device, the plurality of data collection devices, and the central service device of claim 9; each edge service device corresponds to at least one data acquisition device, 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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