CN113068005A - Video data transmission system, method and device - Google Patents
Video data transmission system, method and device Download PDFInfo
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- CN113068005A CN113068005A CN202110161932.4A CN202110161932A CN113068005A CN 113068005 A CN113068005 A CN 113068005A CN 202110161932 A CN202110161932 A CN 202110161932A CN 113068005 A CN113068005 A CN 113068005A
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- card
- account information
- mobile subscriber
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
- H04W8/20—Transfer of user or subscriber data
- H04W8/205—Transfer to or from user equipment or user record carrier
Abstract
The invention discloses a video data transmission system, a video data transmission method and a video data transmission device. The system comprises a server and at least one video terminal, wherein the server is provided with a plurality of mobile subscriber identification cards, and the video terminal is provided with an Internet of things card; the video terminal is used for sending a mobile subscriber identification card account information acquisition request to the server through the Internet of things card; the server is used for selecting the currently idle mobile subscriber identity module card according to the acquisition request and sending the account information of the mobile subscriber identity module card to the video terminal; and the video terminal is also used for receiving the account information through the Internet of things card, accessing the account information into a mobile communication network, and transmitting the acquired video data to the server through the mobile communication network. The video terminal can transmit data to the server by using the network flow of the mobile communication network without being physically connected with the mobile subscriber identity module, the mobile subscriber identity module is convenient and fast to maintain, replace and the like, and the local communication flow of the video terminal is saved.
Description
Technical Field
The present invention relates to the field of network communication technologies, and in particular, to a video data transmission system, method, and apparatus.
Background
Video data (including video stream and image data) shot by the camera needs to be sent to other equipment through a 4G or 5G mobile communication network, and a mobile user identification card is needed for accessing the mobile communication network.
Disclosure of Invention
In view of the above, the present invention has been made to provide a video data transmission system, method and apparatus that overcome or at least partially solve the above problems.
In a first aspect, an embodiment of the present invention provides a video data transmission system, including a server and at least one video terminal, where the server is provided with multiple mobile subscriber identity cards, and the video terminal is provided with an internet of things card;
the video terminal is used for sending a mobile subscriber identification card account information acquisition request to the server through the Internet of things card;
the server is used for selecting a mobile subscriber identity module card which is idle at present according to the acquisition request and sending account information of the mobile subscriber identity module card to the video terminal;
the video terminal is further used for receiving the account information through the Internet of things card, using the account information to access a mobile communication network, and transmitting the collected video data to the server through the mobile communication network.
In a second aspect, an embodiment of the present invention provides a video data transmission method, including:
the method comprises the steps that a server receives a mobile subscriber identity module card account information acquisition request sent by a video terminal through an Internet of things card;
and according to the acquisition request, selecting a currently idle mobile subscriber identity module card, and sending account information of the currently idle mobile subscriber identity module card to the video terminal, so that the video terminal receives the account information through an internet of things card, accesses a mobile communication network by using the account information, and transmits acquired video data to the server through the mobile communication network.
In a third aspect, an embodiment of the present invention provides another video data transmission method, including:
the video terminal receives account information of the mobile subscriber identity module card sent by the server through the Internet of things card, and accesses the mobile communication network by using the account information;
and transmitting the collected video data to the server through the mobile communication network.
In a fourth aspect, an embodiment of the present invention provides a video data transmission apparatus, including a communication module and a selection module;
the communication module is used for receiving a mobile subscriber identification card account information acquisition request sent by the video terminal through the Internet of things card;
the selection module is used for selecting the current idle mobile subscriber identity module according to the acquisition request received by the communication module;
the communication module is further configured to send the account information of the mobile subscriber identity module card selected by the selection module to the video terminal, so that the video terminal receives the account information through an internet of things card, accesses a mobile communication network using the account information, and transmits the acquired video data to the server through the mobile communication network.
In a fifth aspect, an embodiment of the present invention provides another video data transmission apparatus, including a first communication module and a second communication module;
the first communication module is used for receiving account information of the mobile subscriber identity module sent by the server through the Internet of things card and accessing the mobile communication network by using the account information;
and the second communication module is used for transmitting the collected video data to the server through a mobile communication network accessed by the first communication module.
In a sixth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which computer instructions are stored, and when the instructions are executed by a processor, the video data transmission method is implemented.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
(1) the server is provided with a plurality of mobile user identification cards, the mobile user identification cards are managed in a centralized mode, each video terminal is provided with an Internet of things card, the video terminals send mobile user identification card account information acquisition requests to the server through the Internet of things cards and receive mobile user identification card account information returned by the server through the Internet of things cards, the video terminals do not need to be physically connected with the mobile user identification cards, replacement and maintenance of the mobile user identification cards are facilitated, and management of the mobile user identification cards is facilitated; meanwhile, the setting position of the mobile subscriber identity module card is not limited by the position of the video terminal, and the setting position of the mobile subscriber identity module card, namely the setting position of the server, can be in any area within the coverage range of the Internet of things network and the mobile communication network.
(2) The video terminal accesses the mobile communication network by using the received account information sent by the server, and transmits the collected video data to the server through the mobile communication network, so that the communication flow of the local end of the video terminal is saved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a video data transmission system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another video data transmission system according to an embodiment of the present invention;
FIG. 3 is a flow chart of a video data transmission method according to an embodiment of the present invention;
FIG. 4 is a flow chart of another video data transmission method according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a video data transmission apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another video data transmission apparatus according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
In order to solve the problem that time and labor are wasted in replacing a mobile subscriber identity module card in a video terminal in the prior art, embodiments of the present invention provide a video data transmission system, method, and apparatus, where a video terminal can transmit data to a server using network traffic of a mobile communication network without being physically connected to the mobile subscriber identity module card, operations such as maintenance and replacement of the mobile subscriber identity module card are convenient, and local communication traffic of the video terminal is saved.
Examples
An embodiment of the present invention provides a video data transmission system, which has a structure as shown in fig. 1, and includes a server 11 and at least one video terminal 12, where the server 11 is provided with a plurality of mobile subscriber identity cards 111, and the video terminal 12 is provided with an internet of things card 121.
The video terminal 12 is used for sending a mobile subscriber identity module card account information acquisition request to the server 11 through the internet card 121; the server 11 is configured to select a currently idle mobile subscriber identity module card 111 according to the acquisition request, and send account information of the currently idle mobile subscriber identity module card to the video terminal 12; the video terminal 12 is further configured to receive the account information through the internet-of-things card 121, access the mobile communication network using the account information, and transmit the collected video data to the server 11 through the mobile communication network.
The Internet of Things (IOT) is to collect any object or process needing monitoring, connection and interaction in real time and collect various required information such as sound, light, heat, electricity, mechanics, chemistry, biology and location through various possible network accesses by various devices and technologies such as various information sensors, radio frequency identification technology, global positioning system, infrared sensor and laser scanner, so as to realize The ubiquitous connection of objects and processes and realize intelligent sensing, identification and management of objects and processes.
The Internet of things card is used for intelligent terminal equipment networking provided by an operator for Internet of things service enterprises, and is widely applied to the fields of sharing single vehicles, mobile payment, smart cities, vending machines and the like.
The disadvantages of the internet card are low network speed, high delay, low power consumption, and low cost (for example, 10 yuan/year, while the cost of the mobile communication network may be 50 yuan/month). Therefore, some small data can be transmitted or received using the internet card.
In the embodiment of the invention, the video terminal sends the account information acquisition request of the mobile subscriber identification card to the server through the Internet of things card, receives the account information through the Internet of things card, and accesses the mobile communication network by using the account information through the Internet of things card.
The server is provided with a plurality of mobile Subscriber Identity Modules (SIM) which can be 4G or 5G cards of each large operator, equivalently, the server is provided with a card pool, the server performs centralized management on all the SIM cards, the type of the memory card (which operator belongs to, 4G or 5G), the state (idle or occupied) of the card, the residual network flow, the network signal intensity and the like are monitored at set intervals. After receiving a mobile subscriber identity module card account information acquisition request sent by a video terminal, selecting a proper mobile subscriber identity module card according to the previously stored and real-time monitored information, and sending the account information to the requested video terminal.
The beneficial effects of the above technical scheme at least include:
(1) the server is provided with a plurality of mobile user identification cards, the mobile user identification cards are managed in a centralized mode, each video terminal is provided with an Internet of things card, the video terminals send mobile user identification card account information acquisition requests to the server through the Internet of things cards and receive mobile user identification card account information returned by the server through the Internet of things cards, the video terminals do not need to be physically connected with the mobile user identification cards, replacement and maintenance of the mobile user identification cards are facilitated, and management of the mobile user identification cards is facilitated; meanwhile, the setting position of the mobile subscriber identity module card is not limited by the position of the video terminal, and the setting position of the mobile subscriber identity module card, namely the setting position of the server, can be in any area within the coverage range of the Internet of things network and the mobile communication network.
(2) The video terminal accesses the mobile communication network by using the received account information sent by the server, and transmits the collected video data to the server through the mobile communication network, so that the communication flow of the local end of the video terminal is saved.
The server 11 selects a currently idle mobile subscriber identity card, and is specifically configured to select a mobile subscriber identity card from the currently idle mobile subscriber identity cards according to the network signal strength and/or the remaining network traffic of the mobile subscriber identity card.
The method can be characterized in that the mobile subscriber identity card with the strongest current network information intensity and the most residual network flow is selected from the current idle mobile subscriber identity cards; or selecting the mobile subscriber identity module card with the strongest current network information intensity and the residual network flow higher than the set flow threshold; or selecting the mobile subscriber identity card with the network signal strength and/or the residual network traffic meeting the set requirements according to other rules.
Optionally, the server 11 may also select an operator according to a historical signal intensity average and/or a unit traffic cost of the operator; a mobile subscriber identity card is selected from the currently idle mobile subscriber identity cards belonging to the selection operator.
The signal intensity of each operator in a set time can be counted in advance to obtain the historical signal intensity mean value of each operator, and one or more operators with strong historical signal intensity and low traffic cost are determined; the mobile subscriber identity card is then selected from the currently idle mobile subscriber identity cards belonging to the selection operator, for example according to the current network signal strength and/or the remaining network traffic.
In an embodiment, the server 11 is further configured to, when judging whether at least one of the following is negative according to a set interval, re-select a currently idle mobile subscriber identity card, and send the account information of the currently idle mobile subscriber identity card to the video terminal:
judging that the network signal intensity of a mobile subscriber identity module card corresponding to the account information currently used by the video terminal is lower than a set signal intensity threshold;
and judging that the residual network flow of the mobile subscriber identity module corresponding to the account information currently used by the video terminal is lower than a set flow threshold value.
When the signal intensity or the residual network flow of the mobile subscriber identity module card occupied by the video terminal does not meet the set conditions, the server reselects the currently idle mobile subscriber identity module card meeting the conditions and sends the account information of the currently idle mobile subscriber identity module card to the video terminal, so that the video terminal uses the newly received account information to re-access the mobile communication network, the communication speed is ensured, and the communication interruption and even the loss of transmission data caused by the fact that the mobile subscriber identity module card has no residual network flow are avoided.
The system also comprises a base station 13, wherein the specific base station 13 is a base station corresponding to an operator to which the mobile subscriber identity module card set by the server 11 belongs; the video terminal 12 is further configured to send the account information to the corresponding base station 13 through the internet-of-things card 121 before accessing the mobile communication network by using the account information sent by the server 11, so that the base station 13 performs validity check on the account information; when receiving the information that the validity check transmitted by the base station 13 passes through the internet-of-things card 121, the mobile communication network is accessed by using the account information.
The specific application scenario of the system can be that the video terminal is a shooting device which is arranged at each monitoring point and is provided with a camera, each shooting device transmits video data shot by the shooting device to the server through a mobile communication network, and the mobile communication network is accessed by the shooting device according to the account information of the mobile subscriber identity module card received from the server; the server can be arranged in different places, can be arranged in any area within the coverage range of the related network, is provided with a plurality of mobile subscriber identity cards and is managed in a unified way.
Based on the inventive concept of the present invention, an embodiment of the present invention further provides a video data transmission method, as shown in fig. 3, including the following steps:
step S31: and the server receives a mobile subscriber identification card account information acquisition request sent by the video terminal through the Internet of things card.
Step S32: and according to the acquisition request, selecting the currently idle mobile subscriber identity module card, and sending the account information of the currently idle mobile subscriber identity module card to the video terminal.
The server sends the account information of the selected mobile subscriber identity module card to the video terminal, so that the video terminal receives the account information through the Internet of things card, uses the account information to access the mobile communication network, and transmits the collected video data to the server through the mobile communication network.
In one embodiment, selecting a currently idle mobile subscriber identity card may include:
and selecting the mobile subscriber identity card from the currently idle mobile subscriber identity cards according to the network signal intensity and/or the residual network flow of the mobile subscriber identity card.
In one embodiment, the selecting the currently idle mobile subscriber identity card specifically includes:
selecting an operator according to the historical signal intensity average value and/or unit flow cost of the operator; a mobile subscriber identity card is selected from the currently idle mobile subscriber identity cards belonging to the selection operator.
In one embodiment, the method may further include:
when the server judges that at least one of the following is not in accordance with the set interval, the server re-executes the step of selecting the mobile subscriber identity card which is currently idle and sending the account information to the video terminal:
judging that the network signal intensity of a mobile subscriber identity module card corresponding to the account information currently used by the video terminal is lower than a set signal intensity threshold;
and judging that the residual network flow of the mobile subscriber identity module corresponding to the account information currently used by the video terminal is lower than a set flow threshold value.
Based on the inventive concept of the present invention, an embodiment of the present invention further provides another video data transmission method, as shown in fig. 4, including the following steps:
step S41: and the video terminal receives the account information of the mobile subscriber identification card sent by the server through the Internet of things card and accesses the mobile communication network by using the account information.
Step S42: and transmitting the collected video data to a server through a mobile communication network.
In one embodiment, the method may further include that before accessing the mobile communication network with the account information, the video terminal sends the account information to a corresponding base station through an internet card, so that the base station performs validity check on the account information; and if the information that the validity check sent by the base station passes is received through the Internet of things card, executing a step of accessing the mobile communication network by using the account information.
Based on the inventive concept of the present invention, an embodiment of the present invention further provides a video data transmission apparatus, which has a structure as shown in fig. 5, and includes a communication module 51 and a selection module 52;
the communication module 51 is used for receiving a mobile Subscriber Identity Module (SIM) card account information acquisition request sent by the video terminal through the IOT card;
a selection module 52, configured to select a currently idle mobile subscriber identity module according to the acquisition request received by the communication module 51;
the communication module 51 is further configured to send the account information of the mobile subscriber identity module card selected by the selection module 52 to the video terminal, so that the video terminal receives the account information through the internet of things card, accesses the mobile communication network using the account information, and transmits the acquired video data to the server through the mobile communication network.
Based on the inventive concept of the present invention, an embodiment of the present invention further provides a video data transmission apparatus, which has a structure as shown in fig. 6, and includes a first communication module 61 and a second communication module 62;
the first communication module 61 is configured to receive account information of the mobile subscriber identity module card sent by the server through the internet of things card, and access the mobile communication network by using the account information;
and the second communication module 62 is configured to transmit the acquired video data to the server through the mobile communication network accessed by the first communication module 61.
With regard to the method and apparatus of the above embodiments, the specific manner in which each step or module performs an operation has been described in detail in relation to the embodiments of the system, and will not be described in detail herein.
Based on the inventive concept of the present invention, an embodiment of the present invention also provides a computer-readable storage medium having stored thereon computer instructions, which when executed by a processor, implement the above-mentioned video data transmission method.
Unless specifically stated otherwise, terms such as processing, computing, calculating, determining, displaying, or the like, may refer to an action and/or process of one or more processing or computing systems or similar devices that manipulates and transforms data represented as physical (e.g., electronic) quantities within the processing system's registers and memories into other data similarly represented as physical quantities within the processing system's memories, registers or other such information storage, transmission or display devices. Information and signals may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
It should be understood that the specific order or hierarchy of steps in the processes disclosed is an example of exemplary approaches. Based upon design preferences, it is understood that the specific order or hierarchy of steps in the processes may be rearranged without departing from the scope of the present invention. The accompanying method claims present elements of the various steps in a sample order, and are not intended to be limited to the specific order or hierarchy presented.
In the foregoing detailed description, various features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the subject matter require more features than are expressly recited in each claim. Rather, as the following claims reflect, invention lies in less than all features of a single disclosed embodiment. Thus, the following claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. Of course, the processor and the storage medium may reside as discrete components in a user terminal.
For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in memory units and executed by processors. The memory unit may be implemented within the processor or external to the processor, in which case it can be communicatively coupled to the processor via various means as is known in the art.
What has been described above includes examples of one or more embodiments. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the aforementioned embodiments, but one of ordinary skill in the art may recognize that many further combinations and permutations of various embodiments are possible. Accordingly, the embodiments described herein are intended to embrace all such alterations, modifications and variations that fall within the scope of the appended claims. Furthermore, to the extent that the term "includes" is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term "comprising" as "comprising" is interpreted when employed as a transitional word in a claim. Furthermore, any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or". The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Claims (10)
1. A video data transmission system is characterized by comprising a server and at least one video terminal, wherein the server is provided with a plurality of mobile subscriber identification cards, and the video terminal is provided with an Internet of things card;
the video terminal is used for sending a mobile subscriber identification card account information acquisition request to the server through the Internet of things card;
the server is used for selecting a mobile subscriber identity module card which is idle at present according to the acquisition request and sending account information of the mobile subscriber identity module card to the video terminal;
the video terminal is further used for receiving the account information through the Internet of things card, using the account information to access a mobile communication network, and transmitting the collected video data to the server through the mobile communication network.
2. The system of claim 1, wherein the server selects a currently idle mobile subscriber identity card, and is configured to:
and selecting the mobile subscriber identity card from the currently idle mobile subscriber identity cards according to the network signal intensity and/or the residual network flow of the mobile subscriber identity card.
3. The system according to claim 1 or 2, wherein the server selects a currently idle mobile subscriber identity card, in particular for:
selecting an operator according to the historical signal intensity average value and/or unit flow cost of the operator;
a mobile subscriber identity card is selected from the currently idle mobile subscriber identity cards belonging to the selection operator.
4. The system of claim 1, wherein the server is further configured to:
and when judging that at least one of the following is not carried out according to a set interval, re-executing the selection of the mobile subscriber identity module card which is currently idle, and sending the account information of the mobile subscriber identity module card to the video terminal:
judging that the network signal intensity of a mobile subscriber identity module card corresponding to the account information currently used by the video terminal is lower than a set signal intensity threshold;
and judging that the residual network flow of the mobile subscriber identity module corresponding to the account information currently used by the video terminal is lower than a set flow threshold value.
5. The system of claim 1, wherein the system further comprises a base station;
the video terminal is used for sending the account information to a corresponding base station through an Internet of things card before the account information is accessed into a mobile communication network, so that the base station carries out validity check on the account information; and if the information that the legality check sent by the base station passes is received through the Internet of things card, executing the access to the mobile communication network by using the account information.
6. A method for video data transmission, comprising:
the method comprises the steps that a server receives a mobile subscriber identity module card account information acquisition request sent by a video terminal through an Internet of things card;
and according to the acquisition request, selecting a currently idle mobile subscriber identity module card, and sending account information of the currently idle mobile subscriber identity module card to the video terminal, so that the video terminal receives the account information through an internet of things card, accesses a mobile communication network by using the account information, and transmits acquired video data to the server through the mobile communication network.
7. A method for video data transmission, comprising:
the video terminal receives account information of the mobile subscriber identity module card sent by the server through the Internet of things card, and accesses the mobile communication network by using the account information;
and transmitting the collected video data to the server through the mobile communication network.
8. The video data transmission device is characterized by comprising a communication module and a selection module;
the communication module is used for receiving a mobile subscriber identification card account information acquisition request sent by the video terminal through the Internet of things card;
the selection module is used for selecting the current idle mobile subscriber identity module according to the acquisition request received by the communication module;
the communication module is further configured to send the account information of the mobile subscriber identity module card selected by the selection module to the video terminal, so that the video terminal receives the account information through an internet of things card, accesses a mobile communication network using the account information, and transmits the acquired video data to the server through the mobile communication network.
9. A video data transmission device is characterized by comprising a first communication module and a second communication module;
the first communication module is used for receiving account information of the mobile subscriber identity module sent by the server through the Internet of things card and accessing the mobile communication network by using the account information;
and the second communication module is used for transmitting the collected video data to the server through a mobile communication network accessed by the first communication module.
10. A computer-readable storage medium having stored thereon computer instructions, which when executed by a processor, implement the video data transmission method of claim 6 or 7.
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| CN202110161932.4A CN113068005A (en) | 2021-02-05 | 2021-02-05 | Video data transmission system, method and device |
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