CN116156592A

CN116156592A - Low-delay wireless transmission method, device, communication management equipment and storage medium

Info

Publication number: CN116156592A
Application number: CN202211683026.1A
Authority: CN
Inventors: 周雪强; 卢波; 黄章勤
Original assignee: Shenzhen Yutong Lianfa Technology Co ltd
Current assignee: Shenzhen Yutong Lianfa Technology Co ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-05-23
Anticipated expiration: 2042-12-27
Also published as: CN116156592B

Abstract

The invention discloses a low-delay wireless transmission method, a device, communication management equipment and a storage medium, belonging to the technical field of communication; the method comprises the following steps: transmitting preset resolution video test data to first network access routing equipment; forwarding the video test data among the routing devices through the first network access routing device to obtain each forwarding time length; inputting each forwarding time length to a preset transmission path optimization algorithm model to obtain a plurality of target transmission time lengths; determining the priority and the target data transmission path corresponding to each target transmission time length respectively; and determining the current data transmission path according to the priority order and the running condition of each target data transmission path, and transmitting the real-time video data based on the current data transmission path. By the method and the device, the transmission delay of the high-resolution video data is greatly reduced.

Description

Low-delay wireless transmission method, device, communication management equipment and storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a low latency wireless transmission method, a device, a communication management apparatus, and a computer readable storage medium.

Background

With the development of communication technologies such as 4G, 5G and the like, people put forward higher requirements on data transmission, and the data transmission also has wider application scenes. The wireless image transmission system is mainly based on unidirectional analog television broadcasting service, and is mainly applied to the fields of monitoring, video shooting, television live broadcasting, unmanned aerial vehicle aerial photography and the like, and the wireless image transmission system is mainly used for transmitting various acquired video data to a corresponding data receiving system in real time, so that on-site pictures can be remotely and real-time checked, the requirements of users on-site pictures can be met, such as the requirements of family users on-site sports events, traffic managers on road monitoring, command personnel on-site emergency operation in a remote guiding manner and the like.

Although the present communication technology has been developed and the wireless image transmission using the wireless communication technology has been mature, the transmission requirement of medium image quality can be basically met in the process of video transmission, for some situations where the resolution is high, that is, the time delay still occurs during the transmission of video data with high image quality, that is, the field image received by the user remotely is not an actual field image but a historical image before a period of time, the reasons for generating the high time delay mainly include two points: the bandwidth is insufficient, the data transmission path planning is unreasonable, and the bandwidth problem is severely limited by economic cost, so the data transmission path is mainly improved at present, and the data transmission path planning is mainly performed manually based on own experience of a communication arrangement scheme or based on QOS (Quality of Service ), but the planned data transmission link is difficult to meet real-time high-resolution video transmission due to the increasing complexity of a communication network topology structure, and has higher time delay in the high-resolution video transmission process.

Disclosure of Invention

The invention mainly aims to provide a low-delay wireless transmission method, a device, communication management equipment and a computer readable storage medium, and aims to solve the technical problem that the time delay is high in the high-resolution video transmission process of the conventional data transmission link planning scheme.

In order to achieve the above object, the present invention provides a low-latency wireless transmission method, which is applied to a low-latency wireless transmission system including a video data transmitting device, a video data receiving device, and a plurality of routing devices between the video data transmitting device and the video data receiving device; the video data transmitting device and the video data receiving device are in wireless connection through a plurality of routing devices;

the method comprises the following steps:

acquiring video test data with preset resolution, and transmitting the video test data to a first network access routing device in the routing devices; the first network access routing device is spaced from the video data transmitting device by less than a preset distance and is directly connected with the video data transmitting device;

The video test data received by the first network access routing equipment are not repeatedly forwarded among the routing equipment until the video test data are sent to second network access routing equipment in the routing equipment, so that forwarding duration among the routing equipment is obtained; wherein the second network access routing device is directly connected with the video data receiving device;

inputting each forwarding time length to a preset transmission path optimization algorithm model so as to determine a plurality of target transmission time lengths of the video test data from the video data transmitting equipment to the video data receiving equipment; the target transmission time length is smaller than or equal to a preset time length threshold value;

determining a priority and a target data transmission path corresponding to each target transmission duration respectively, and associating the priority with the target data transmission path;

and determining a current data transmission path between the video data sending equipment and the video data receiving equipment according to the order of the priorities and the running condition of the target data transmission path, and carrying out real-time video data transmission based on the current data transmission path.

Optionally, the step of sending the video test data to a first network access routing device of the routing devices includes:

acquiring each alternative network access routing device which is smaller than a preset distance from the video data sending device in the routing device;

determining a first network access routing device with the largest average signal intensity and the smallest signal intensity change value in a preset period in the alternative network access routing device;

and sending the video test data to the first network access routing equipment.

Optionally, the transmission path optimization algorithm model is a genetic algorithm model; the step of inputting each forwarding duration to a preset transmission path optimization algorithm model to determine a plurality of target transmission durations of the video test data from the video data transmitting device to the video data receiving device, includes:

coding each forwarding time length and routing equipment information corresponding to each forwarding time length, and then randomly generating a first generation population; wherein the primary population comprises a plurality of primary individuals; the primary individual characterizes a data transmission path;

inputting the first generation population into a preset genetic algorithm model for iterative optimization to obtain a plurality of offspring populations;

Determining a preset number of target offspring populations with algebra back in each offspring population;

respectively determining the minimum transmission time length in each target sub population;

and taking each minimum transmission duration as a plurality of target transmission durations of the video test data from the video data transmitting device to the video data receiving device.

Optionally, the step of inputting the primary population into a preset genetic algorithm model for iterative optimization to obtain a plurality of offspring populations includes:

inputting the primary population into a preset genetic algorithm model, and intersecting and mutating the primary individuals based on the current mutation probability and the current intersection probability in the genetic algorithm model so as to obtain a child population corresponding to the primary population through iterative optimization;

determining a first-generation average transmission time length in the first-generation population and a child average transmission time length in the child population;

and if the average transmission time length of the offspring is smaller than the average transmission time length of the first generation, taking the offspring population as the first generation population, and circularly executing the steps of intersecting and mutating between the first generation individuals based on the preset mutation probability and the preset intersection probability in the genetic algorithm model to obtain the offspring population corresponding to the first generation population through iterative optimization so as to obtain a plurality of offspring populations.

Optionally, after the step of determining the average transmission time period for the first generation in the first generation population and the average transmission time period for the children in the child population, the method further includes:

if the child average transmission time length is greater than or equal to the primary average transmission time length, determining a time length difference value between the child average transmission time length and the primary average transmission time length;

according to the time length difference value, determining a target variation probability corresponding to the current variation probability and/or determining a target crossover probability corresponding to the current crossover probability;

adjusting the current variation probability to the target variation probability and/or adjusting the current crossover probability to the target crossover probability;

and taking the offspring population as the primary population, and circularly executing the steps of intersecting and mutating between the primary individuals based on the preset mutation probability and the preset intersection probability in the genetic algorithm model to obtain offspring populations corresponding to the primary population through iterative optimization so as to obtain a plurality of offspring populations.

Optionally, the operating condition comprises a network load; the step of determining the current data transmission path between the video data transmitting apparatus and the video data receiving apparatus according to the order of the priorities and the operation condition of the target data transmission path includes:

Acquiring the network load of each target data transmission path, and determining the network average load of each network load;

determining an idle data transmission path of which the network load is smaller than the average network load in the target data transmission path;

determining the data transmission path with the highest priority in all idle data transmission paths according to the priority sequence;

and taking the data transmission path with the highest priority as the current data transmission path between the video data sending equipment and the video data receiving equipment.

Optionally, the operating condition further includes routing equipment failure information; the step of determining the current data transmission path between the video data transmitting apparatus and the video data receiving apparatus according to the order of the priorities and the operation condition of the target data transmission path, further includes:

acquiring the fault information of the routing equipment of each target data transmission path;

determining a normal transmission path in which the routing equipment fault information is null in the target transmission path, and determining an abnormal transmission path in which the routing equipment fault information is not null;

Taking the data transmission path with the smallest transmission duration in the normal transmission paths as the current data transmission path between the video data sending equipment and the video data receiving equipment, and determining an abnormal routing equipment and/or an abnormal path area in the abnormal transmission path;

restarting the abnormal routing equipment and outputting the abnormal routing equipment and/or the abnormal path area as transmission abnormal prompt information.

In addition, in order to achieve the above object, the present invention further provides a low-latency wireless transmission device, which is disposed in the low-latency wireless transmission system, and includes:

the data acquisition module is used for acquiring video test data with preset resolution and sending the video test data to first network access routing equipment in the routing equipment; the first network access routing device is spaced from the video data transmitting device by less than a preset distance and is directly connected with the video data transmitting device;

the transmission test module is used for carrying out non-repeated forwarding on the video test data received by the first network access routing equipment among the routing equipment until the video test data are sent to a second network access routing equipment in the routing equipment, so as to obtain forwarding duration among the routing equipment; the second network access routing equipment is directly connected with the video data receiving equipment;

The transmission planning module is used for inputting each forwarding time length into a preset transmission path optimization algorithm model so as to determine a plurality of target transmission time lengths of the video test data from the video data sending equipment to the video data receiving equipment; the target transmission time length is smaller than or equal to a preset time length threshold value; determining a priority and a target data transmission path corresponding to each target transmission duration respectively, and associating the priority with the target data transmission path; and determining a current data transmission path between the video data sending equipment and the video data receiving equipment according to the order of the priorities and the running condition of the target data transmission path, and carrying out real-time video data transmission based on the current data transmission path.

In addition, to achieve the above object, the present invention also provides a communication management device, including a processor, a storage unit, and a low-latency wireless transmission program stored on the storage unit and executable by the processor, wherein the low-latency wireless transmission program, when executed by the processor, implements the steps of the low-latency wireless transmission method as described above.

The invention also provides a computer readable storage medium, wherein the computer readable storage medium stores a low-delay wireless transmission program, and the low-delay wireless transmission program realizes the steps of the low-delay wireless transmission method when being executed by a processor.

According to the low-delay wireless line transmission method in the technical scheme, video test data with preset resolution is obtained, and the video test data is sent to first network access routing equipment in the routing equipment; the step that the first network access routing equipment is less than a preset distance from the video data sending equipment and is directly connected with the video data sending equipment can determine the first network access routing equipment with higher signal strength according to the distance between the video data sending equipment and each routing equipment, and further video test data can be quickly transferred from the video data sending equipment to a data transmission link; the video test data received by the first network access routing equipment are not repeatedly forwarded among the routing equipment until the video test data are sent to second network access routing equipment in the routing equipment, so that forwarding time length among the routing equipment is obtained; the step of directly connecting the second network access routing equipment with the video data receiving equipment can obtain the forwarding time length of each routing equipment when video test data are mutually transmitted; the forwarding time lengths are input into a preset transmission path optimization algorithm model to determine a plurality of target transmission time lengths of the video test data from the video data transmitting equipment to the video data receiving equipment; the target transmission time length is smaller than or equal to a preset time length threshold value, iteration optimization can be carried out on the data transmission link based on a plurality of forwarding time lengths and two routing devices corresponding to each forwarding time length, and planning of the data transmission link is carried out by replacing manpower in an artificial intelligence mode, so that a plurality of alternative data transmission paths (target data transmission paths) meeting the expectations of users are obtained in a short time; and finally, determining the current data transmission paths between the video data sending equipment and the video data receiving equipment according to the sequence of the priorities and the running condition of the target data transmission paths, and carrying out real-time video data transmission based on the current data transmission paths, wherein the running condition of each target data transmission path can be combined, and the current data transmission path with the shortest transmission duration and the most stable and reliable transmission can be determined from a plurality of alternative data transmission paths.

Drawings

Fig. 1 is a schematic structural diagram of a hardware running environment of a communication management device according to an embodiment of the present invention;

FIG. 2 is a flow chart of a first embodiment of the low-latency wireless transmission method of the present invention;

FIG. 3 is a detailed flowchart of step S10 according to an embodiment of the present invention;

FIG. 4 is a detailed flowchart of step S30 according to an embodiment of the present invention;

FIG. 5 is a detailed flowchart of step S32 according to an embodiment of the present invention;

FIG. 6 is a detailed flowchart of step S321 according to an embodiment of the low-latency wireless transmission method of the present invention;

FIG. 7 is a detailed flowchart of step S50 according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of data forwarding according to the low latency wireless transmission method of the present invention;

fig. 9 is a schematic diagram of a frame structure of the low-latency wireless transmission system of the present invention.

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

The embodiment of the invention provides communication management equipment. The communication management device may include any type of communication device such as a personal computer, a server, etc., without limitation.

As shown in fig. 1, fig. 1 is a schematic structural diagram of a hardware running environment of a communication management device according to an embodiment of the present invention.

As shown in fig. 1, the communication management apparatus may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory unit 1005, and a communication bus 1002. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display (Display), an input unit such as a control panel, and the optional user interface 1003 may also include a standard wired interface, a wireless interface. Network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., a WIFI interface). The storage unit 1005 may be a high-speed RAM storage unit or a stable storage unit (non-volatile memory), such as a disk storage unit. The storage unit 1005 may alternatively be a storage system independent of the aforementioned processor 1001. A low-latency wireless transmission program may be included in the storage unit 1005 as a computer storage medium.

Those skilled in the art will appreciate that the hardware configuration shown in fig. 1 does not constitute a limitation of the apparatus, and may include more or fewer components than shown, or may combine certain components, or may be arranged in different components.

With continued reference to fig. 1, the storage unit 1005 in fig. 1, which is a computer readable storage medium, may include an operating system, a user interface module, a network communication module, and a low latency wireless transmission program.

In fig. 1, the network communication module is mainly used for connecting with a server and performing data communication with the server; and the processor 1001 may call the low-latency wireless transmission program stored in the storage unit 1005 and perform the steps in the following respective embodiments.

Based on the hardware structure of the communication management device, various embodiments of the low-delay wireless image transmission method are provided.

The embodiment of the invention provides a low-delay wireless image transmission method.

Referring to fig. 2, fig. 2 is a flow chart of a first embodiment of the low-delay wireless transmission method according to the present invention; in a first embodiment of the present invention, the low-latency wireless transmission method includes the steps of:

step S10, obtaining video test data with preset resolution, and sending the video test data to a first network access routing device in the routing devices; the first network access routing device is spaced from the video data transmitting device by less than a preset distance and is directly connected with the video data transmitting device;

The low-delay wireless transmission method is applied to a low-delay wireless transmission system, and the low-delay wireless transmission system comprises video data sending equipment, video data receiving equipment and a plurality of routing equipment between the video data sending equipment and the video data receiving equipment; the video data transmitting device and the video data receiving device are in wireless connection through a plurality of routing devices; the plurality of routing devices comprise a first network access routing device and a second network access routing device. The first network access routing device is used for being directly connected with the video data sending device; the second network access routing device is configured to connect directly with the video data receiving device.

It should be further noted that the video data transmitting device may have a function of collecting video data at the same time, for example, a monitoring camera, a live video camera, an outdoor infrared video camera, a smart phone, a tablet computer, etc. for collecting and transmitting video data (including video test data and real-time video data); the video data receiving device may be various display devices, such as a display screen of a command center, a smart television, a smart phone, a personal computer, etc., for receiving video data transmitted from the video data transmitting device through various routing devices (relay devices). The plurality of routing devices between the video data transmitting device and the video data receiving device form a network and a network topology structure for video data transmission, and the routing devices should be understood in a broad sense, including various commercial routers and base stations, because the routers are "small base stations" in a general sense, and wifi6, that is, a sixth generation wireless network technology, or 5G technology, that is, a fifth generation mobile communication technology, can be adopted for the various routing devices, so as to satisfy faster and more stable data transmission. For a clearer understanding of the plurality of routing devices herein, and for ease of understanding the forwarding process between the various routing devices, reference may be made to fig. 8, which illustrates the inclusion of a routing device between a video data transmitting device and a video data receiving device: 1. 2, 3, 4, 5, 6, 7, 8, of course, the figures are merely examples, and the actual data transmission is much more complex than shown in the figures, the invention only needs to consider the forwarding of video data between routes.

The first network access routing device refers to a routing device directly connected with the video data sending device, namely, a routing device for providing network access for the video data sending device. Similarly, the second network access routing device provides network access for the video data receiving device.

In this embodiment, the preset resolution refers to video test data with resolutions of 1080P and above 2K, and preferably, low-latency data transmission of video test data with resolutions of 2K, 4K and 8K and subsequent formal real-time video data can be realized. The low time delay of the invention means that the video data transmission with the resolution of 2K and above in China can be within 3s, the video data transmission with the resolution of 2K and above in the world can be within 10s or within 20s, and the time delay of rebroadcasting NBA with 1080P resolution of the current vacation video is 10-15s, and the time delay of rebroadcasting some on-site sports events with 2K resolution of the central television station is generally about 30 s. The video test data refers to a part of field pictures with preset resolution collected by a camera on the spot or video test data with preset resolution which is specially used for testing the transmission duration before the formal real-time video data transmission, for example, a section of video test data with 4k resolution, video coding standard of H.265 and playing time of 20s is transmitted under a certain bandwidth.

After the video test data is acquired, a first network access routing device directly connected to the video data sending device needs to be selected, in this embodiment, in order to improve connection quality and stability of data transmission, for a wireless connection mode, a router within a preset distance from the video data sending device can be determined from a plurality of routing devices to be used as the first network access routing device, where the preset distance can be set according to actual needs, or can be set according to specifications of the routing device, for example, a home router 10m, a base station 2km, and the like, and the method is not limited herein. In addition, it should be noted that the distance between the video data transmitting device and the routing device may be determined according to the signal strength, or may be determined according to a pre-made position coordinate plan for the fixed placement of each device. For the wired connection manner, the video data transmitting apparatus may be wired connected to a plurality of first network access routing apparatuses.

Referring to fig. 3, in an embodiment, the step S10 of sending the video test data to a first network access routing device of the routing devices includes:

Step S11, obtaining each alternative network access routing device which is less than a preset distance from the video data sending device in the routing device;

for the video data transmission device to access the router in a wireless manner, each alternative network access routing device, which is spaced from the video data transmission device by less than a preset distance, in the routing devices needs to be acquired first, for example, the preset distance is 15m, and the routing device 1, the routing device 2 and the routing device 3 exist within 15m, and these 3 routing devices are used as alternative network access routing devices.

Step S12, determining a first network access routing device with the largest average signal intensity and the smallest signal intensity change value in a preset period in the alternative network access routing device;

and determining average signal intensity and signal intensity change values of each alternative network access routing device in a preset period respectively. The preset period can be set according to actual needs, for example, 3s, that is, a plurality of signal intensities are obtained within 3s according to a certain signal acquisition frequency, so as to obtain average signal intensity. The signal strength variation value is the basis for judging the stability of the routing device, and particularly, the first network access routing device which needs to provide network access for the video data transmitting device must have higher signal strength and higher signal stability. The signal strength change value refers to a numerical change of the signal strength in a preset period, for example, the signal strength is-67 dBm at 0s and the signal strength is-70 dBm at 3s in a preset period, and then the signal strength change value is considered to be 3dBm.

After the average signal strength and the signal strength change value of each alternative network access routing device are determined, the average signal strength and the signal strength change value of each alternative network access routing device are compared with each other, so that the first network access routing device with the largest average signal strength and the smallest signal strength change value in a preset period is determined, that is, the first network access routing device with the fastest transmission speed and the most stable transmission in the plurality of alternative network access routing devices is determined.

And step S13, the video test data is sent to the first network access routing equipment.

When the first network access routing device is determined, the video test data can be transmitted to the first network access routing device more timely and reliably, namely, the video test data is transferred from the local place to the network link.

Step S20, the video test data received by the first network access routing equipment are not repeatedly forwarded among the routing equipment until the video test data are sent to a second network access routing equipment in the routing equipment, so that forwarding time length among the routing equipment is obtained; wherein the second network access routing device is directly connected with the video data receiving device;

When the first network access routing device receives the video test data, the video test data already enters the network link, and referring to fig. 8, with the first network access routing device as a starting point, no repeated forwarding between the routing devices refers to that the video test data only passes through a certain routing device once, for example: the routing device is shown in the figure: 1. 2, 3, 4, 5, 6, 7, 8, wherein 1 and 8 are a first network access routing device and a second network access routing device, respectively, and the order of forwarding between the respective routing devices is 1, 3, 2, 4, 7, 5, 6, 8, thereby transmitting the video test data to the video data receiving device. The forwarding duration of forwarding the video test data between the routing devices can be obtained multiple times by performing a process of forwarding the video test data between the routing devices without repeating the forwarding between the routing devices until the video test data is sent to the second network access routing device, or the routing device does not repeatedly forward the video test data to each other routing device when the video test data arrives at any routing device, for example, when the video test data arrives at the routing device 3 from the routing device 1, the routing device 3 can forward the video test data to the routing device 2, the routing device 4, the routing device 5, the routing device 6, the routing device 7 and the routing device 8 respectively, and according to such a forwarding rule, the forwarding duration between the routing devices can also be obtained.

Step S30, inputting each forwarding time length to a preset transmission path optimization algorithm model to determine a plurality of target transmission time lengths of the video test data from the video data transmitting device to the video data receiving device; the target transmission time length is smaller than or equal to a preset time length threshold value;

the forwarding duration and the information of the routing device (such as the identifier of the routing device) may be input to a preset transmission path optimization algorithm model, so that iterative optimization is performed to obtain a result of multiple target transmission durations after iterative optimization, where the target transmission duration may be a certain number of shorter transmission durations, and the transmission duration that is smaller than or equal to the preset duration threshold may be used as the target transmission duration by comparing with the preset duration threshold, where the preset duration threshold may be set as required, that is, the longest duration for forwarding video test data between two routing devices desired by a user.

Specifically, the transmission path optimization algorithm model is a genetic algorithm model;

referring to fig. 4, the step S30 includes:

step S31, coding each forwarding time length and the routing equipment information corresponding to each forwarding time length, and then randomly generating a first generation population; wherein the primary population comprises a plurality of primary individuals; the primary individual characterizes a data transmission path;

The core of the genetic algorithm model is a genetic algorithm. Genetic algorithms, as their name implies, are algorithms derived from the ideas of inheritance in analog biology. The offspring is generated by gene communication of excellent parents in the population and a certain probability of gene mutation, and the offspring is iterated in a circulating way to generate a new population of the first generation, and finally, the most excellent individuals in all the populations are obtained after a certain number of iterations, so that the optimal solution of the problem can be approximately considered.

In this embodiment, the forwarding time periods and the routing device information corresponding to the forwarding time periods are encoded and then a first generation population is randomly generated, where the encoding mode may select binary encoding, that is, 0 and 1, and a specific generation population process may be: the method comprises the steps of encoding information of each routing device and randomly generating a plurality of data transmission paths according to each routing device, wherein the data transmission paths not only comprise connection information of a plurality of routing devices, namely who is connected with whom, how many routing devices are connected and how, but also comprise total data transmission time obtained by adding a plurality of forwarding time lengths corresponding to the connection information and a plurality of forwarding time lengths, the plurality of data transmission paths are respectively used as first individuals of a first generation group, and it is required to say that the initial individuals at least comprise encoding information of a first network access routing device and encoding information of a second network access routing device, namely, any routing devices exist in the randomly generated data transmission paths and how the routing devices are connected with each other, and the data transmission paths must have a first network access routing device and a second network access routing device, for example, the first network access routing device and the second network access routing device are respectively numbered 1 and 8, and the randomly generated data transmission paths have two: the first 1, 2, 3, 6, 7, 8 and the second 1, 3, 2, 6, 7, 8 may be used as individuals of the primary population, and furthermore, the primary population must include all routing devices (encoded information), i.e. no matter what random data transmission path the primary individuals are, but the entire primary population should cover all routing devices, like the above examples, two individuals, data transmission paths: 1. 2, 3, 6, 7, 8 and

data transmission paths

1, 3, 2, 6, 7, 8 cannot be all individuals of the primary population, because the routing devices with the numbers 4 and 5 are not covered, and other individuals comprising the routing devices 4 and 5 are needed, so that the whole primary population is complete, the connection of any routing device and any two routing devices can be omitted in the iterative process, and the final result after iterative optimization is ensured to be reliable.

Step S32, inputting the primary population into a preset genetic algorithm model for iterative optimization to obtain a plurality of offspring populations;

inputting the primary population into a preset genetic algorithm model, and performing iterative optimization based on iteration limit times, convergence conditions, the number of individuals, mutation probability and crossover probability input by a user in the genetic algorithm model so as to perform crossover and mutation on the basis of each individual of the primary population to obtain a plurality of offspring populations, wherein the number or algebra of the offspring populations is limited by the iteration limit times input by the user so as to avoid infinite iteration.

Step S33, determining a preset number of target offspring populations with algebra back in each offspring population;

in the iterative process, due to the limitation of the convergence condition, the convergence condition is: comparing the respective optimal individuals (shortest transmission time length) in the populations of two adjacent algebra (which can be called as former generation population and latter generation population), if the shortest transmission time length of the latter generation population is longer than the shortest transmission time length of the former generation population, the iteration is stopped when the latter generation is not as good as the former generation. And if not, continuing iteration until the iteration limit times are reached or convergence conditions are met.

Therefore, the offspring population with the algebraic more posterior in each offspring population often has better individuals, namely shorter data transmission duration, and a target offspring population with the algebraic more posterior of the preset number is obtained, wherein the preset number can be set according to actual needs, for example, 20 offspring populations, and the preset number is not limited.

Step S34, determining the minimum transmission time length in each target sub population respectively;

and step S35, taking each minimum transmission duration as a plurality of target transmission durations of the video test data from the video data transmitting device to the video data receiving device.

Determining the minimum transmission time length in each target sub-population, namely, how many target sub-populations have the minimum transmission time length. In short, the transmission duration corresponding to each optimal individual, that is, the minimum transmission duration, can be selected from each target sub-population, and each minimum transmission duration is used as a plurality of target transmission durations of the video test data from the video data transmitting device to the video data receiving device.

By combining the genetic algorithm with the programming of the data transmission path (link) through the embodiment, the programming of the data transmission path can be realized instead of manual work, the programming is more efficient and reliable than the programming which is made based on experience manually, the whole duration of data transmission is shorter, namely the speed of data transmission is faster, and the time delay is greatly reduced.

Step S40, determining a priority and a target data transmission path corresponding to each target transmission duration respectively, and associating the priority with the target data transmission path;

when a plurality of target transmission durations are obtained, the target transmission durations are all values smaller than or equal to a preset duration threshold, namely the transmission duration actually expected by a user combining hardware and bandwidth is met. For example, the transmission duration of the expected foreign sports event of the user under the gigabandwidth is 10s, that is, the picture observed by the user is different from the field actual picture by 10s, so that under the condition of hardware permission, the genetic algorithm model can iterate a plurality of population individuals with the transmission duration less than or equal to 10s, thereby meeting the actual requirement of the user on low time delay.

And determining the priority corresponding to each target transmission time according to the comparison of the sizes of the target transmission time, namely, the shorter the transmission time is, the higher the priority is. And associating the priority with each target transmission time length corresponding to the target data transmission path, so that the optimal target data transmission path can be automatically selected for data transmission when the real-time video data is transmitted.

And step S50, determining a current data transmission path between the video data sending equipment and the video data receiving equipment according to the order of the priorities and the running condition of the target data transmission path, and carrying out real-time video data transmission based on the current data transmission path.

The order of the priorities is to arrange the target data transmission paths from high to low, that is, the arrangement order of the target data transmission paths is determined according to the target transmission duration of the target data transmission paths, and the running condition of the target data transmission paths may include two aspects: the network load and/or the routing equipment fault information can screen the target data transmission paths according to the network load or the routing equipment fault information, namely, the target data transmission paths with higher network load or the routing equipment fault are eliminated, and then the current data transmission path with the highest priority is determined from the rest target data transmission paths capable of normally transmitting. And when the real-time video data transmission is formally carried out, namely, the on-site pictures are formally transmitted remotely through the wireless transmission system, the data transmission is carried out based on the current data transmission path which is the fastest and stable in combination, the requirement of a user on low time delay is met, and meanwhile, the situation that the transmission effect such as blocking is poor is prevented based on the quick line.

Referring to fig. 5, based on the above embodiments, in one embodiment, step S32, the step of inputting the first generation population into a preset genetic algorithm model for iterative optimization to obtain a plurality of offspring populations includes:

step S320, inputting the primary population into a preset genetic algorithm model, and intersecting and mutating the primary individuals based on the current mutation probability and the current crossover probability in the genetic algorithm model to obtain a child population corresponding to the primary population through iterative optimization;

when iteration is just started on the primary population in the genetic algorithm model, the current variation probability and the current crossover probability can be respectively used as the current variation probability and the current crossover probability which are input by a user, whether crossover is carried out between chromosomes of the primary individuals or not is determined based on the current crossover probability, for example, the current crossover probability is 0.5, half of the probabilities of crossing between the chromosomes of the primary individuals occur, namely genes of each other are exchanged, and the crossover is essential to exchange data in a computer. Based on the current mutation probability, determining whether the genetic mutation occurs in the process of chromosome crossing between the primary individuals, wherein the genetic mutation probability in the process of the offspring individuals generated through iteration is carried out according to the current mutation probability, for example, the current mutation probability is 0.1, and about 1% of the genes of the offspring individuals are mutated. In this embodiment, the gene is understood to be the code of each routing device in the data transmission path, and the chromosome is understood to be the code of the data transmission path formed by combining each routing device according to a certain connection sequence, which also represents substantially the whole content of the individual, but the individual may include the transmission duration corresponding to the data transmission path in addition to the data transmission path.

Based on the current genetic algorithm, the primary population, the current variation probability and the current crossover probability, crossover and variation can be carried out among the primary individuals so as to obtain a child population corresponding to the primary population through iterative optimization, and further the child population can be obtained through continuous iteration.

Step S321, determining a primary average transmission time length in the primary population and a child average transmission time length in the child population;

each primary individual in the primary population has a corresponding transmission time length, and then the average transmission time length of the primary in the primary population can be obtained by dividing the total transmission time length in the primary population by the number of primary individuals.

And step S322, if the average transmission time length of the offspring is smaller than the average transmission time length of the first generation, taking the offspring population as the first generation population, and circularly executing the steps of intersecting and mutating among the first generation individuals based on the preset mutation probability and the preset intersection probability in the genetic algorithm model to obtain the offspring population corresponding to the first generation population through iterative optimization so as to obtain a plurality of offspring populations.

Comparing the average transmission duration of the child with the average transmission duration of the first generation, if the average transmission duration of the child is smaller than the average transmission duration of the first generation, the child population is better than the first generation population, that is, the transmission duration of the data transmission path is shorter than the first generation population from the whole of the child population, and a better solution (shorter transmission duration) is generated, so that iteration can be continued without changing the current variation probability and the current crossover probability, the child population corresponding to the first generation population is taken as the first generation population, and step S320 is executed in a circulating manner, so that a plurality of child populations are obtained through iteration.

By the embodiment, blind iteration in the process of carrying out iterative optimization on a genetic algorithm can be avoided to obtain a large number of offspring populations inferior to the offspring populations of the previous generation populations, the need of continuing iteration only exists when the offspring populations generated by iteration are continuously superior to the offspring populations generated by the offspring populations, further, the better offspring populations are continuously obtained, correspondingly, the transmission time length of the obtained data transmission path is shorter and shorter, and the final time delay is also lower and shorter.

Referring to fig. 6, based on the foregoing embodiments, in one embodiment, in step S321, a first-generation average transmission duration in the first-generation population and a child average transmission duration in the child population are determined, and the method further includes:

Step S3211, if the average transmission time length of the child is greater than or equal to the average transmission time length of the first generation, determining a time length difference between the average transmission time length of the child and the average transmission time length of the first generation;

if the average transmission time length of the offspring is longer than or equal to the average transmission time length of the first generation, which means that the offspring population is not as good as the first generation population, that is, iteration is not optimized, in order to further obtain a better offspring population, the current variation probability and/or the current crossover probability need to be adjusted, so that the iterative optimization continues to obtain a shorter transmission time length.

Step S3212, determining a target variation probability corresponding to the current variation probability and/or determining a target crossover probability corresponding to the current crossover probability according to the duration difference;

when the time length difference value is determined, a preset time length difference value-probability mapping table in the wireless transmission system can be queried, so that the target variation probability and the target crossover probability corresponding to the current time length difference value are determined. It should be noted that, the relationship between the time length difference and the target mutation probability and the target crossover probability is: the larger the time length difference value is, the larger the corresponding target variation probability is, and the larger the target crossover probability is, because the larger the time length difference value is, the lower the offspring population is than the primary population, the corresponding variation probability and crossover probability in iteration can be increased, and therefore the better offspring population is obtained as much as possible. The target variation probability and the target crossover probability are respectively larger than the current variation probability and the current crossover probability, so that the variation probability and the crossover probability are increased. However, the target mutation probability and the target crossover probability need to be set to a certain limit to prevent damage to the individual, for example, the target mutation probability is less than 0.3, and the target crossover probability is less than 0.8.

Step S3213, adjusting the current variation probability to the target variation probability and/or adjusting the current crossover probability to the target crossover probability;

the current variation probability is adjusted to the target variation probability and/or the current crossover probability is adjusted to the target crossover probability to increase variation probability and/or crossover probability.

Step S3214, taking the offspring population as the primary population, and circularly executing the steps of intersecting and mutating between the primary individuals based on the preset mutation probability and the preset intersection probability in the genetic algorithm model to obtain offspring populations corresponding to the primary population through iterative optimization so as to obtain a plurality of offspring populations.

And taking the offspring population as a first generation population, and further circularly executing the step S320, so as to iteratively obtain a plurality of offspring populations.

Through the embodiment, when the offspring population is inferior to the offspring population generated directly, in order to further find better individuals, namely shorter transmission time, the characteristics of iterative optimization can be kept by properly increasing mutation probability and/or crossover probability, iterative optimization is continued as far as possible to obtain better populations and better individuals, and finally the shortest transmission time of the whole iterative process can be obtained at the end of iteration, so that the time delay in data transmission is greatly reduced.

Referring to fig. 7, in an embodiment, based on the above embodiments, the operation condition includes a network load; the step S50, according to the order of the priorities and the operation status of the target data transmission path, determines a current data transmission path between the video data transmitting apparatus and the video data receiving apparatus, includes:

step S51, obtaining the network load of each target data transmission path, and determining the network average load of each network load;

the network load, namely network load balancing, mainly refers to traffic borne by a network relay, and the network load of a target data transmission path refers to the total network load of all routing devices in a certain target data transmission path, namely the network load of an entire link consisting of a plurality of routing devices. Further, after determining a plurality of network loads, a network average load between the network loads can be obtained, wherein the network average load is obtained by accumulating all the network loads and dividing the network loads by the number of the target data transmission paths.

Step S52, determining an idle data transmission path with the network load smaller than the network average load in the target data transmission path;

Comparing the network load in each target data transmission path with the network average load, thereby determining that an idle data transmission path with the network load smaller than the network average load in the target data transmission paths is used as an idle data transmission path, wherein the idle data transmission path refers to a data transmission path with larger flow bearing capacity compared with other target data transmission paths.

Step S53, determining the data transmission path with the highest priority in the idle data transmission paths according to the priority sequence;

and step S54, taking the data transmission path with the highest priority as the current data transmission path between the video data sending device and the video data receiving device.

According to the priority order, determining the idle data transmission path with the highest priority, and taking the idle data transmission path with the highest priority as the current data transmission path between the video data sending device and the video data receiving device, the idle data transmission path with the highest priority can avoid high delay caused by the overload of the network load of the network link based on the idle data transmission path with the highest priority, and the idle data transmission path with the highest priority has shorter transmission duration, so that the transmission with lower delay in video data transmission is ensured to the greatest extent possible.

In an embodiment, based on the above embodiments, the operating condition further includes routing device failure information; the step S50, according to the order of the priorities and the operation status of the target data transmission path, determines a current data transmission path between the video data transmitting apparatus and the video data receiving apparatus, includes:

step a, obtaining the fault information of the routing equipment of each target data transmission path;

when the target data transmission path is determined, each routing device in the target data transmission path can report the fault information of the routing device, so that in order to ensure the on-site picture, that is, the real-time video data can have lower time delay, the real-time video data is prevented from being abnormally interrupted due to the fault of the routing device, and the faulty target data transmission path needs to be removed.

Step b, determining a normal transmission path with the routing equipment fault information being empty in the target transmission path, and determining an abnormal transmission path with the routing equipment fault information not being empty;

in this embodiment, as long as there is a routing device with a routing failure in a certain target transmission path, that is, when the routing device failure information is not null, the target transmission path is marked as an abnormal transmission path, and when the routing device failure information in the target transmission path is null, that is, when there is no routing failure, the corresponding target transmission path is marked as a normal transmission path.

Step c, taking the data transmission path with the smallest transmission duration in the normal transmission paths as the current data transmission path between the video data sending equipment and the video data receiving equipment, and determining an abnormal routing equipment and/or an abnormal path area in the abnormal transmission path;

and the data transmission path with the minimum transmission time length in the normal transmission path is determined to be used as the current data transmission path between the video data sending equipment and the video data receiving equipment by excluding the abnormal transmission path, so that the normal transmission of the real-time video data is ensured, and the real-time video data is transmitted in the corresponding normal transmission path with low time delay. At the same time, an abnormal routing device and/or an abnormal path area in the abnormal transmission path are determined, namely, which routing device or devices and which specific path area in the abnormal transmission path generate the abnormality are determined.

And d, restarting the abnormal routing equipment and outputting the abnormal routing equipment and/or the abnormal path area as transmission abnormal prompt information.

Restarting the abnormal routing equipment, specifically, closing the abnormal routing equipment, and performing starting-up to finish restarting after a preset starting-up time length is longer, wherein the preset starting-up time length can be 5 minutes, and is not limited, so that the problem of simple and answering faults is solved in a restarting mode, the abnormal routing equipment can be normally used in the follow-up process, and meanwhile, transmission abnormal prompt information about the abnormal routing equipment and/or the abnormal path area is generated and output to related network maintenance personnel, so that the related network maintenance personnel can conveniently and accurately perform fault elimination in time, and transmission communication of an abnormal transmission path can be recovered in time.

In addition, referring to fig. 9, fig. 9 is a schematic diagram of a frame structure of the low-latency wireless transmission device of the present invention. The invention also provides a low-delay wireless line transmission device, which comprises:

the data acquisition module A10 is used for acquiring video test data with preset resolution and sending the video test data to a first network access routing device in the routing device; the first network access routing device is spaced from the video data transmitting device by less than a preset distance and is directly connected with the video data transmitting device;

the transmission test module a20 is configured to perform non-repeated forwarding on the video test data received by the first network access routing device between the routing devices until the video test data is sent to a second network access routing device in the routing devices, so as to obtain forwarding duration between the routing devices; the second network access routing equipment is directly connected with the video data receiving equipment;

a transmission planning module a30, configured to input each of the forwarding durations to a preset transmission path optimization algorithm model, so as to determine a plurality of target transmission durations of the video test data from the video data transmitting device to the video data receiving device; the target transmission time length is smaller than or equal to a preset time length threshold value; determining a priority and a target data transmission path corresponding to each target transmission duration respectively, and associating the priority with the target data transmission path; and determining a current data transmission path between the video data sending equipment and the video data receiving equipment according to the order of the priorities and the running condition of the target data transmission path, and carrying out real-time video data transmission based on the current data transmission path.

The specific implementation of the low-delay wireless transmission device is basically the same as the embodiments of the low-delay wireless transmission method, and is not repeated here.

Furthermore, the invention also provides a computer readable storage medium. The computer readable storage medium of the invention stores a low-delay wireless transmission program, wherein when the low-delay wireless transmission program is executed by a processor, the steps of the low-delay wireless transmission method are realized.

The method implemented when the low-latency wireless transmission procedure is executed may refer to various embodiments of the low-latency wireless transmission method of the present invention, and will not be described herein.

It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a system for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory location that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory location produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as

Causing limitations to the claims. The word "comprising" does not exclude the presence of elements or steps 5 not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can

To be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order.

These words may be interpreted as names.

0 while preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

The foregoing description of the preferred embodiments of the invention is merely exemplary in nature and is in no way intended to limit the invention,

all the changes of the equivalent structure 5 made by the content of the specification and the drawings of the invention or the direct/indirect application in other related technical fields are included in the protection scope of the invention.

Claims

1. The low-delay wireless transmission method is characterized in that the low-delay wireless transmission method is applied to a low-delay wireless transmission system, and the low-delay wireless transmission system comprises a video data sending device, a video data receiving device and a plurality of routing devices between the video data sending device and the video data receiving device; the video data transmitting device and the video data receiving device are in wireless connection through a plurality of routing devices;

The method comprises the following steps:

2. The low latency wireless routing method of claim 1, wherein the step of transmitting the video test data to a first network access routing device of the routing devices comprises:

and sending the video test data to the first network access routing equipment.

3. The low-latency wireless transmission method according to claim 2, wherein the transmission path optimization algorithm model is a genetic algorithm model; the step of inputting each forwarding duration to a preset transmission path optimization algorithm model to determine a plurality of target transmission durations of the video test data from the video data transmitting device to the video data receiving device, includes:

4. The low-latency wireless transmission method according to claim 3, wherein said step of inputting said first generation population into a predetermined genetic algorithm model for iterative optimization to obtain a plurality of offspring populations comprises:

5. The low latency wireless transmission method according to claim 4, wherein after the step of determining a first generation average transmission time period in the first generation population and a child generation average transmission time period in the child generation population, the method further comprises:

6. The low latency wireless transmission method according to claim 5, wherein the operating condition comprises a network load; the step of determining the current data transmission path between the video data transmitting apparatus and the video data receiving apparatus according to the order of the priorities and the operation condition of the target data transmission path includes:

7. The low latency wireless transmission method according to claim 6, wherein the operating condition further comprises routing equipment failure information; the step of determining the current data transmission path between the video data transmitting apparatus and the video data receiving apparatus according to the order of the priorities and the operation condition of the target data transmission path, further includes:

8. A low-latency wireless transmission device, wherein the low-latency wireless transmission device is disposed in the low-latency wireless transmission system of claim 1, comprising:

9. A communication management device comprising a processor, a memory unit, and a low-latency wireless transmission program stored on the memory unit that is executable by the processor, wherein the low-latency wireless transmission program, when executed by the processor, implements the steps of the low-latency wireless transmission method according to any of claims 1 to 7.

10. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a low-latency wireless transmission program, wherein the low-latency wireless transmission program, when executed by a processor, implements the steps of the low-latency wireless transmission method according to any of claims 1 to 7.