CN111935695A - Application system based on emergency communication individual soldier communication-in-motion - Google Patents
Application system based on emergency communication individual soldier communication-in-motion Download PDFInfo
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- CN111935695A CN111935695A CN202010684477.1A CN202010684477A CN111935695A CN 111935695 A CN111935695 A CN 111935695A CN 202010684477 A CN202010684477 A CN 202010684477A CN 111935695 A CN111935695 A CN 111935695A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
- H04W28/065—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
Abstract
The invention is suitable for the field of emergency communication, and provides an application system based on emergency communication individual communication-in-motion, wherein two individual communication-in-motion and an unmanned aerial vehicle are adopted for networking, one main communication-in-motion and one standby communication-in-motion are adopted, image data are forwarded by the main communication-in-motion under normal conditions, if network slowdown occurs between the main communication-in-motion and a communication base station, the main communication-in-motion splits images to the standby communication-in-motion according to a certain proportion, the standby communication-in-motion is sent to the communication base station, the communication base station combines the image data and then pushes the image data, so that the video stream is not interrupted and is not blocked, and the video playing effect of a far end is ensured.
Description
Technical Field
The invention belongs to the field of emergency communication, and particularly relates to an application system for communication in motion of individual soldiers based on emergency communication.
Background
The emergency communication system comprises a rear-end box, a front-end box, an individual soldier communication-in-motion platform, a visual command scheduling platform and the like, is suitable for command scheduling and occasions such as earthquake relief work, training exercise and the like which need emergency communication guarantee, supports various relay modes such as a public network 4G/private network 4G, IP wired network, a 2M/satellite link, optical fibers and the like, and can realize functions such as audio and video communication, audio and video conference, external line relay access, text and electricity interaction and the like.
The single soldier communication in motion adopts an ultrashort wave communication technology, supports 1080P HDMI and SDI high-definition signal transmission, and can realize real-time completely synchronous wireless transmission of video and audio in a complex environment; the system has high image quality, good voice quality, strong anti-interference capability, long communication distance, strong security and confidentiality and high frequency spectrum utilization rate; and can realize real-time image wireless transmission under the condition of high-speed movement.
The practical application scene is that an individual soldier communication-in-motion and unmanned aerial vehicle networking are carried out, in an emergency site, the unmanned aerial vehicle sends collected high-definition video data to the individual soldier communication-in-motion, and then the individual soldier communication-in-motion is remotely pushed to an emergency command center through a 4G network. For high-definition video transmission with high definition requirements, in some emergency sites, due to the reason of operator base station construction limitation, the speed of 4G network connection between the single soldier communication-in-motion device and the base station cannot be achieved, so that the single soldier communication-in-motion device easily causes video blockage when forwarding high-definition videos, and user experience of a remote emergency command center is affected.
Disclosure of Invention
In view of the above problems, the present invention aims to provide an application system for individual soldier communication-in-motion based on emergency communication, and aims to solve the above problems.
The invention adopts the following technical scheme:
the application system based on the emergency communication individual communication-in-motion comprises an unmanned aerial vehicle, a communication base station and two individual communication-in-motion devices, wherein the two individual communication-in-motion devices are a main communication-in-motion device and a standby communication-in-motion device respectively, and the working method of the application system comprises the following steps:
the unmanned aerial vehicle wirelessly transmits the high-definition video image shot in real time to the master communication-in-motion device;
the main communication-in-motion system receives high-definition video images in sequence and caches the high-definition video images to the local;
the master communication-in-motion slave cache reads high-definition video images frame by taking a frame as a unit and sends the high-definition video images to a communication base station;
the communication base station stores the received high-definition video image in a temporary storage area;
if the communication base station detects that the available space of the temporary storage area is gradually increased, feeding back prompt information to the master communication-in-motion device;
after receiving the prompt message, the master communication-in-motion receives the prompt message, and the high-definition video image cached locally is split according to the proportion and sent to the standby communication-in-motion;
the standby communication-in-motion sends the received split image to a communication base station, and the communication base station stores the split image in a temporary storage area;
and the communication base station combines the data corresponding to the temporary storage area into a complete image, continuously reads the high-definition video image from the temporary storage area in sequence and pushes the high-definition video image to an emergency command center.
Further, the method further comprises:
and if the communication base station detects that the available space of the temporary storage area is within the expected range, reading the high-definition video image from the temporary storage area and pushing the high-definition video image to an emergency command center.
Further, the size of the default available space of the temporary storage area is X0, the upper limit of the available space is X, the default pushing speed for the communication base station to push the high-definition video image to the emergency command center is S, the time for the available space to change from X0 to X is t, the prompt information fed back to the master communication in motion contains time t, the sending speed of the image to the communication base station in the current master communication is S' ═ S- (X-X0)/t, and after receiving the prompt information, the master communication in motion reads the high-definition video image from the last row of pixels in proportion
The data of the line is split and sent to the standby communication-in-motion along with the image frame number, the standby communication-in-motion is sent to the temporary storage area of the communication base station, and the main communication-in-motion is used for sending the rest data
The data communication image frame needs to be sent to the communication base station, and when the data communication image frame is pushed to the current image, the communication base station sends the corresponding imageAnd merging the data with the image frame sequence number, and pushing the data to an emergency command center.
The invention has the beneficial effects that: the invention adopts two individual communication-in-motion devices to be networked with an unmanned aerial vehicle, one main communication-in-motion device and one standby communication-in-motion device, image data is forwarded by the main communication-in-motion device under normal conditions, if network slowdown occurs between the main communication-in-motion device and a communication base station, the main communication-in-motion device splits images into the standby communication-in-motion devices according to a certain proportion, the standby communication-in-motion devices send the split images to the communication base station, the communication base station combines the image data and then pushes the combined image data, and therefore, the video streaming can be guaranteed not to be interrupted and blocked, and the video playing effect of.
Drawings
Fig. 1 is a flowchart of an application system working method based on emergency communication individual soldier communication-in-motion provided by an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
The embodiment provides an application system based on emergency communication for single soldier communication in motion, which includes an unmanned aerial vehicle, a communication base station and two single soldier communication in motion, where the two single soldier communication in motion are a main communication in motion and a standby communication in motion respectively, and as shown in fig. 1, the working method of the application system is as follows:
and step S1, the unmanned aerial vehicle wirelessly transmits the real-time shot high-definition video image to the master communication-in-motion device.
In this embodiment, the unmanned aerial vehicle is wirelessly connected with the active communication-in-motion device, and the active communication-in-motion device is wirelessly connected with the standby communication-in-motion device. Under normal conditions, the main communication-in-motion device finishes receiving the high-definition video images shot by the human-computer in real time.
And step S2, the main communication-in-motion system receives the high-definition video images in sequence and caches the high-definition video images to the local.
The main communication-in-motion communication has a cache for caching the received high-definition video images, and the video needs to be cached in consideration of the network problem of the main communication-in-motion communication and the communication base station.
And step S3, reading the high-definition video images frame by frame in the main communication-in-motion slave buffer by taking the frame as a unit, and sending the high-definition video images to the communication base station.
The main communication-in-motion device is connected with the communication base station through the 4G network, and due to the problems of position setting, density arrangement and the like of the communication base station, when network resources are in shortage, the 4G network has the problem of speed reduction, and further video data transmission is influenced.
And step S4, the communication base station stores the received high-definition video image in a temporary storage area.
The temporary storage area is used as video buffer, and stable transmission of image data can be guaranteed even if network fluctuation occurs.
Step S5, if the communication base station detects the available space of the temporary storage area is gradually increased, the communication base station feeds back the prompt information to the main mobile station.
The temporary storage area of the communication base station is divided into a space with a fixed size. For example, the size of the temporary storage area can be set to be 32M, and under normal and stable conditions, the sending speed of the data communicated to the main mobile station by the unmanned aerial vehicle is basically consistent with the pushing speed of the communication base station and the background emergency command center, so that the size of the image data stored in the temporary storage area is basically unchanged, that is, the size of the available space of the temporary storage area is basically unchanged.
If the available space of the temporary storage area is gradually increased, the data sending speed of the communication base station in the main use cannot keep up with the pushing speed of the communication base station and the background emergency command center, so that the image data of the temporary storage area is gradually reduced, and according to the existing scheme, when the data in the temporary storage area is reduced to 0, the emergency command center is blocked by video. When network tension occurs between the main communication-in-motion and the communication base station, the communication base station can reduce the network connection speed with the main communication-in-motion so as to ensure that all terminals within the range of the base station have connection authority. Similar to the existing mobile phone terminals, the network speed connection of each mobile phone terminal can be obviously reduced when the number of the mobile phone terminals served by one base station is increased or the network request data volume of the mobile phone terminals is increased.
Therefore, a backup mobile communication is needed to be added to increase a communication link.
And step S6, after the main communication-in-motion receives the prompt message, the high-definition video image cached locally is split according to the proportion and sent to the standby communication-in-motion.
And step S7, the standby mobile phone in motion sends the received split image to the communication base station, and the communication base station stores the split image in the temporary storage area.
After the main communication-in-motion receives the prompt message, the local high-definition video image is split into a part and sent to the standby communication-in-motion, the standby communication-in-motion also sends the split image data to the communication base station, the communication base station stores the data into the temporary storage area, and the split remaining data is sent to the communication base station by the main communication-in-motion and stored into the temporary storage area and is associated with the image data sent by the standby communication-in-motion.
And step S8, the communication base station combines the data corresponding to the temporary storage area into a complete image, and continuously reads the high-definition video image from the temporary storage area in sequence and pushes the image to an emergency command center.
And finally, the communication base station combines the associated data and pushes the image data to an emergency command center.
Of course, for step S5, if the communication base station detects that the available space of the temporary storage area is within the expected range, it indicates normal image data transceiving, and then directly reads the high definition video image from the temporary storage area and pushes the image to the emergency command center.
As a specific splitting example, it is assumed that the total size of the temporary storage area is 32M, and the default available space size is X0, such as 16M, that is, under normal transceiving conditions, half of the space of the temporary storage area stores buffered high-definition video image data, the upper limit of the available space is X, where X is 24M, that is, when only 8M image data exists in the temporary storage area, the communication base station needs to send a notification message back to the master station.
Communication baseThe default pushing speed of the station for pushing the high-definition video image to the emergency command center is S, under normal conditions, the sending speed of data leading to the communication base station in the main communication is S, for example, 1M per second, the communication base station can statistically indicate that the time taken for the available space to change from X0 to X is t, and then the prompt information fed back to the main communication in the main communication comprises the time t. The speed reduction situation caused by network tension between the current active communication-in-motion and the communication base station can be calculated through the data, the image sending speed of the current active communication-in-motion to the communication base station is S' ═ S- (X-X0)/t, and after the active communication-in-motion receives the prompt information, the high-definition video image is proportionally read from the last row of pixels
Dividing line data, sending the divided line data together with the image frame serial number to standby communication in motion, wherein the resolution of the high-definition video image is 1080 × 1980, the height is 1080 pixels, the embodiment divides the line data, and the last video image is divided into line data and image frame serial number
And splitting the data and sending the split data to a standby communication-in-motion device. Then the rest is
The data in the main communication-in-motion mode can be utilized to the maximum extent by the splitting mode of the row data, and the standby communication-in-motion mode can have resources and process other matters at the same time. The standby communication-in-motion is sent to the temporary storage area of the communication base station, and the main communication-in-motion is the rest
The data communication image frame needs to be sent to a communication base station.
When image data are split, the same image frame serial number is marked on split data and the rest data, so that the two parts of data are sent to a communication base station through two communication-in-motion devices, when the communication base station pushes data to a background, and when the current split image is pushed, the communication base station merges the data corresponding to the same image frame serial number and pushes the data to an emergency command center.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. An application system based on emergency communication individual communication-in-motion is characterized by comprising an unmanned aerial vehicle, a communication base station and two individual communication-in-motion devices, wherein the two individual communication-in-motion devices are a main communication-in-motion device and a standby communication-in-motion device respectively, and the working method of the application system comprises the following steps:
the unmanned aerial vehicle wirelessly transmits the high-definition video image shot in real time to the master communication-in-motion device;
the main communication-in-motion system receives high-definition video images in sequence and caches the high-definition video images to the local;
the master communication-in-motion slave cache reads high-definition video images frame by taking a frame as a unit and sends the high-definition video images to a communication base station;
the communication base station stores the received high-definition video image in a temporary storage area;
if the communication base station detects that the available space of the temporary storage area is gradually increased, feeding back prompt information to the master communication-in-motion device;
after receiving the prompt message, the master communication-in-motion receives the prompt message, and the high-definition video image cached locally is split according to the proportion and sent to the standby communication-in-motion;
the standby communication-in-motion sends the received split image to a communication base station, and the communication base station stores the split image in a temporary storage area;
and the communication base station combines the data corresponding to the temporary storage area into a complete image, continuously reads the high-definition video image from the temporary storage area in sequence and pushes the high-definition video image to an emergency command center.
2. The emergency communication-based individual soldier communication-in-motion application system of claim 1, wherein the method further comprises:
and if the communication base station detects that the available space of the temporary storage area is within the expected range, reading the high-definition video image from the temporary storage area and pushing the high-definition video image to an emergency command center.
3. The emergency communication individual soldier communication-in-motion application system as claimed in claim 2, wherein the default available space size of the temporary storage area is X0, the upper limit of the available space is X, the default push speed of the communication base station for pushing the high definition video image to the emergency command center is S, the time taken for the available space to change from X0 to X is t, the prompt information fed back to the master communication-in-motion device includes time t, the image transmission speed leading to the communication base station in the current master communication is S' ═ S- (X-X0)/t, and after receiving the prompt information, the master communication-in-motion device reads the high definition video image from the last row of pixels in proportion
The data of the line is split and sent to the standby communication-in-motion along with the image frame number, the standby communication-in-motion is sent to the temporary storage area of the communication base station, and the main communication-in-motion is used for sending the rest data
And the data communication image frame needs to be sent to the communication base station, and when the current image is pushed, the communication base station combines the data corresponding to the same image frame number and pushes the data to the emergency command center.
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Denomination of invention: An application system of mobile communication based on emergency communication Effective date of registration: 20220615 Granted publication date: 20210727 Pledgee: Guanggu Branch of Wuhan Rural Commercial Bank Co.,Ltd. Pledgor: Mingfei Weiye Technology Co.,Ltd. Registration number: Y2022420000160 |
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