CN110958068B - Video transmission method and device - Google Patents

Video transmission method and device Download PDF

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Publication number
CN110958068B
CN110958068B CN201811127648.XA CN201811127648A CN110958068B CN 110958068 B CN110958068 B CN 110958068B CN 201811127648 A CN201811127648 A CN 201811127648A CN 110958068 B CN110958068 B CN 110958068B
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Prior art keywords
wifi channel
video data
wifi
gateway
channel
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CN110958068A (en
Inventor
刘安
张利才
申喻
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201811127648.XA priority Critical patent/CN110958068B/en
Priority to PCT/CN2019/105268 priority patent/WO2020063341A1/en
Publication of CN110958068A publication Critical patent/CN110958068A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections

Abstract

The invention provides a video transmission method, which is applied to gateway equipment and comprises the following steps: receiving video data sent by a video server; forwarding the video data to the terminal equipment through a first WiFi channel; receiving a retransmission request of the terminal equipment through a second WiFi channel; and sending the video data requested to be retransmitted to the terminal equipment according to the retransmission request. Therefore, the transmission of the video data and the retransmission request can not be interfered with each other, and the transmission efficiency and the video quality are improved.

Description

Video transmission method and device
Technical Field
The present invention relates to the field of communications, and in particular, to a method and an apparatus for video transmission.
Background
Currently, there are two main types of video networks, namely iptv (internet television) network and ott (over The top) video network. The IPTV network adopts a general multicast protocol, the bandwidth load does not increase with the increase of the number of terminals, but the requirement on the network quality is high, and once data loss occurs, retransmission of the data cannot be performed. The OTT video network adopts a unicast protocol, and although the OTT video network has a retransmission protection function for data transmission, the bandwidth load continuously rises along with the increase of the number of terminals, so that the tide effect is easily generated, and the bandwidth waste is large.
In a home network scene, due to the continuous popularization of WiFi (wireless fidelity), WiFi terminals are continuously increased, various interferences are continuously generated, and an unstable phenomenon of a WiFi network is caused, so that a video data loss is easily caused when a live broadcast service of an IPTV is influenced by an environment in a home network environment, and then a video pause phenomenon is caused, thereby influencing the quality of a video service.
Disclosure of Invention
The embodiment of the invention provides a video transmission method and video transmission equipment, which ensure that video data transmission and retransmission requests cannot interfere with each other and improve transmission efficiency and video quality.
In a first aspect, an embodiment of the present invention provides a method for video transmission, which is applied to a gateway device, and includes: receiving video data sent by a video server; forwarding the received video data to terminal equipment through a first WiFi channel; receiving a retransmission request of the terminal equipment through a second WiFi channel; and sending the video data requested to be retransmitted to the terminal equipment according to the retransmission request.
The method ensures that the video data transmission and the retransmission request cannot interfere with each other, and improves the video data transmission efficiency and the video quality.
In one possible design, the gateway device receives the video data sent by the video server in a multicast mode and forwards the video data to the terminal device in the multicast mode. The multicast mode further improves the video data transmission efficiency.
In another possible design, the first WiFi channel is a 5G-WiFi channel and the second WiFi channel is a 2.4G-WiFi channel. The WiFi channels of different frequencies further improve video data transmission efficiency.
In another possible design, the video data requested for retransmission is sent to the terminal device over the first WiFi channel or the second WiFi channel. The gateway equipment sends the video data requested for retransmission to the terminal equipment through the first channel, namely the 5G-WiFi high-speed channel, so that the receiving and sending switching of the WiFi channel is avoided, and the video data transmission efficiency and the video quality are further improved.
In another possible design, prior to receiving the video data, the method further includes: and sending a Service Set Identifier (SSID) and a password of second WiFi to the terminal equipment through the first WiFi channel, and establishing a second WiFi channel with the terminal equipment according to the SSID and the password. Therefore, the gateway equipment can only externally present one WiFi, and the usability of the user is improved.
In a second aspect, an embodiment of the present invention provides a method for video transmission, which is applied to a terminal device, and includes: receiving video data sent by gateway equipment through a first WiFi channel; determining that there is lost video data; sending a retransmission request to the gateway equipment through a second WiFi channel; and receiving the video data which is returned by the gateway equipment and requests for retransmission.
In one possible design, the terminal device receives the video data forwarded by the gateway device in a multicast mode.
In another possible design, the first WiFi channel is a 5G-WiFi channel and the second WiFi channel is a 2.4G-WiFi channel.
In another possible design, the video data requested to be retransmitted, which is returned by the gateway device, is received through the first WiFi channel or the second WiFi channel.
In another possible design, prior to receiving the video data, the method further includes: and the terminal equipment receives a Service Set Identifier (SSID) and a password of second WiFi from the gateway equipment through the first WiFi channel, and establishes a second WiFi channel with the gateway equipment according to the SSID and the password.
In a third aspect, an embodiment of the present invention provides a gateway device, which has a function of implementing a behavior of the gateway device in the foregoing method. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units corresponding to the above functions, for example, a receiving unit, a transmitting unit, and a retransmitting unit.
In one possible design, the gateway device has a structure including a processor and a memory, the memory is used for storing program codes for executing the method, and the processor is configured to execute the program stored in the memory. The gateway device may further comprise a communication interface for communicating with other devices. The communication interface includes two WiFi interfaces.
In a fourth aspect, an embodiment of the present invention provides a terminal device, which has a function of implementing a behavior of the terminal device in the foregoing method. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units corresponding to the above functions, for example, a receiving unit, and a retransmitting unit.
In one possible design, the terminal device includes a processor and a memory, the memory is used for storing program codes for executing the method, and the processor is configured to execute the program stored in the memory. The terminal device may further comprise a communication interface for communicating with other devices. The communication interface includes two WiFi interfaces.
In a fifth aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions for the gateway device or the terminal device, which includes a program designed to execute the above aspects.
According to the technical scheme of the video transmission provided by the embodiment of the invention, the video forwarding and the video retransmission are carried out through different WiFi channels, so that the video data transmission and the retransmission request cannot interfere with each other, and the video data transmission efficiency and the video quality are improved.
Drawings
Fig. 1 is a schematic diagram of a system architecture for video transmission according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of video transmission according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of another video transmission method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a gateway device according to an embodiment of the present invention;
fig. 5 is another schematic structural diagram of a gateway device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;
fig. 7 is another schematic structural diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Before the embodiments of the present invention are explained in detail, an application scenario of the embodiments of the present invention is described as an example.
The video transmission method provided by the embodiment of the invention is applied to a video network system. Fig. 1 is a system architecture diagram of video transmission according to an embodiment of the present invention, which includes: video server 101, gateway device 102, terminal device 103. In a home network scenario, the gateway device may be connected to a plurality of terminal devices to serve the plurality of terminal devices.
And the video server 101 is connected with the gateway device through a network. The method is used for providing video data for users, and the video data can be issued to the gateway equipment in a unicast mode, a multicast mode and the like.
The gateway device 102, which may be a home gateway device or a wireless access gateway device in a commercial site, is configured to receive video data from a video server and forward the video data to a terminal device.
The gateway equipment comprises two WiFi interfaces, and two WiFi connections can be established between the gateway equipment and the terminal equipment and used for video data transmission and data retransmission. The two WiFi interfaces may be WiFi with different signal frequencies, for example one WiFi connection at frequency 5G and one WiFi connection at frequency 2.4G.
The terminal device 103, which may be a mobile phone, a set Top box stb (set Top box), or the like, is configured to receive video data and display the video data to a user for viewing.
The terminal equipment comprises two WiFi interfaces, and two WiFi connections can be established between the terminal equipment and the gateway equipment and are used for video data transmission and data retransmission.
Aiming at the half-duplex characteristic of a WiFi protocol, the embodiment of the invention adopts a dual-channel mode, two WIFI chips are arranged in both the gateway equipment and the terminal equipment, 5G and 2.4G can be supported to work simultaneously, video data can be sent to the terminal equipment through a high-speed channel of 5G-WiFi, and a retransmission request can be sent to the gateway equipment through a low-speed channel of 2.4G-WiFi. Therefore, the video data transmission and the retransmission request can not be interfered with each other, and the transmission efficiency and the video quality are improved.
As shown in fig. 2, the video transmission method provided in the embodiment of the present invention includes the following steps:
the gateway device receives video data sent by a video server 201.
For live video programs, network traffic can be saved by transmitting in a multicast manner.
202, the gateway device sends the received video data to the terminal device through the first WiFi channel.
As described above, two WiFi channels are provided between the gateway device and the terminal device, and after receiving the live video data sent by the video server, the gateway device can send the video data to the terminal device through the 5G-WiFi high-speed channel. For the video data transmitted in the multicast mode, the gateway device can also forward the video data to the terminal device in the multicast mode.
And 203, the terminal device sends a retransmission request to the gateway device through the second WiFi channel.
In the process of forwarding the video data to the terminal device by the gateway device, due to the influence of various environmental factors, such as electromagnetic interference, obstacles, and the like, the terminal device may have the phenomena of signal loss, error code, and the like when receiving the video data, thereby causing the video data to be lost. The video data loss can cause the phenomenon of mosaic, katton and the like of the video played by the video player. Thereby affecting video playback quality and user experience.
For lost video data, the terminal device requests the gateway device for retransmission. The terminal equipment can send a retransmission request to the gateway equipment through the 2.4G-WiFi low-speed channel to request the gateway equipment to retransmit video data lost by the terminal.
And 204, according to the retransmission request, the gateway equipment sends the video data requested to be retransmitted to the terminal equipment.
When the gateway device receives the video data in step 201, the received video data is buffered, for example, the video data may be buffered for 10 seconds. Therefore, after receiving the retransmission request of the terminal equipment, the gateway equipment searches the requested data from the cached video data and sends the requested data to the terminal equipment. The gateway device may send the video data requested to be retransmitted through the second WiFi channel, or may send the video data requested to be retransmitted through the first WiFi channel.
By the method, the video data transmission and the retransmission request are ensured not to interfere with each other, and the transmission efficiency and the video quality are improved. The gateway equipment sends the video data requested for retransmission to the terminal equipment through the first channel, namely the 5G-WiFi high-speed channel, so that the receiving and sending switching of the WiFi channel is avoided, and the video data transmission efficiency and the video quality are further improved.
The embodiment of the present invention provides another example of a video transmission method applied to the gateway device shown in fig. 1. In this example, the 5G-WiFi high speed channel is used for the gateway device to send video data to the terminal device, and the 2.4G-WiFi low speed channel is used for the terminal device to send a retransmission request to the gateway device. The gateway device may only externally present one WiFi, for example, the service Set identifier SSID (service Set identifier) and the password of the 5G-WiFi may be externally presented, and the SSID and the password of the 2.4G-WiFi may be configured on the gateway, may not be externally presented, and may be delivered to the terminal device through the 5G-WiFi. As shown in fig. 3, the method specifically includes the following steps:
301, the gateway device establishes a 5G-WiFi data connection with the terminal device. 5G-WiFi provides a high-speed channel for video transmission to terminal devices.
302, the gateway device sends the SSID and password of 2.4G-WiFi to the terminal device through the 5G-WiFi channel. The SSID and password of the 2.4G-WiFi may be configured in the gateway device.
303, establishing a 2.4G-WiFi data connection between the terminal device and the gateway device by using the received SSID and password.
Thus, two WiFi channels are established between the gateway and the terminal, and the video data can be transmitted, received and retransmitted through the two WiFi channels.
And 304, the gateway device receives the video data sent by the video server and caches the video data.
For live video programs, network traffic can be saved by transmitting in a multicast manner.
And 305, the gateway equipment transmits the received video data to the terminal equipment through the 5G-WiFi channel.
And after receiving the live video data sent by the video server, the gateway equipment forwards the video data to the terminal equipment through the 5G-WiFi high-speed channel. For the video data transmitted in the multicast mode, the gateway device can also forward the video data to the terminal device in the multicast mode.
And 306, the terminal device sends a retransmission request to the gateway device through the 2.4G-WiFi channel.
In the process of forwarding the video data to the terminal device by the gateway device, due to the influence of various environmental factors, such as electromagnetic interference, obstacles, and the like, the terminal device may have the phenomena of signal loss, error code, and the like when receiving the video data, thereby causing the video data to be lost. The video data loss can cause the phenomenon of mosaic, katton and the like of the video played by the video player. Thereby affecting video playback quality and user experience.
For lost video data, the terminal equipment sends a retransmission request to the gateway equipment through the 2.4G-WiFi low-speed channel to request the gateway equipment to retransmit the video data lost by the terminal.
307, according to the retransmission request, the gateway device sends the requested video data to the terminal device through the 5G-WiFi channel.
After receiving the retransmission request of the terminal equipment, the gateway equipment searches the requested data from the cached video data and sends the requested data to the terminal equipment.
The gateway equipment sends the video data to the terminal equipment through the 5G-WiFi high-speed channel, so that the receiving and sending switching of the WiFi channel is avoided, the bidirectional full-duplex communication is realized between the gateway and the terminal, and the video data transmission efficiency and the video quality are further improved.
The embodiment of the present invention further provides a schematic structural diagram of a gateway device, as shown in fig. 4, including a receiving unit 401, a sending unit 402, and a retransmitting unit 403; wherein:
the receiving unit is used for receiving video data sent by the video server;
the sending unit is used for forwarding the received video data to the terminal equipment through the first WiFi channel;
the retransmission unit is used for receiving a retransmission request of the terminal equipment through the second WiFi channel and sending video data requesting retransmission to the terminal equipment according to the retransmission request.
Further, these units implement the related functions in the foregoing method, and are not described again.
In this embodiment, the gateway device is presented in the form of a functional unit. An "element" may refer to an application-specific integrated circuit (ASIC), an electronic circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other devices that may provide the described functionality. In a simple embodiment, those skilled in the art will appreciate that the gateway device may be implemented using a processor, memory, and a communication interface.
The gateway device in the embodiment of the present invention may also be implemented in the form of a computer device (or system) in fig. 5. Fig. 5 is a schematic diagram of a computer device according to an embodiment of the present invention. The computer device comprises at least one processor 501, a communication bus 502, a memory 503 and at least one communication interface 504, and may further comprise an IO interface 505.
The processor may be a general purpose Central Processing Unit (CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits configured to control the execution of programs in accordance with the inventive arrangements.
The communication bus may include a path that transfers information between the aforementioned components.
A communication interface, using any transceiver or the like, for communicating with other devices or communication Networks, such as ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), etc. In the invention, the communication interface comprises two WiFi communication modules.
The Memory may be, but is not limited to, a Read-Only Memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical Disc storage, optical Disc storage (including Compact Disc, laser Disc, optical Disc, digital versatile Disc, blu-ray Disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory may be self-contained and coupled to the processor via a bus. The memory may also be integral to the processor.
Wherein the memory is used for storing application program codes for executing the scheme of the invention and is controlled by the processor to execute. The processor is configured to execute application program code stored in the memory.
In particular implementations, the processor may include one or more CPUs, each of which may be a single-Core (si — Core) processor or a multi-Core (multi-Core) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).
In particular implementations, the computer device may also include an input/output (I/O) interface, as one embodiment. For example, the output device may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display device, a Cathode Ray Tube (CRT) display device, a projector (projector), or the like. The input device may be a mouse, a keyboard, a touch screen device or a sensing device, etc.
The computer device may be a general purpose computer device or a special purpose computer device. In a specific implementation, the computer device may be a desktop computer, a laptop computer, a web server, a Personal Digital Assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, a communication device, an embedded device, or a device with a similar structure as in fig. 5. The embodiment of the invention does not limit the type of the computer equipment.
The gateway device as in fig. 1 may be the device shown in fig. 5, with one or more software modules stored in the memory. The gateway device may implement the software modules by means of a processor and program code in a memory to perform the above-described method.
Embodiments of the present invention also provide a computer storage medium for storing computer software instructions for the apparatus shown in fig. 4 or fig. 5, which includes a program designed to execute the above method embodiments. The above method can be implemented by executing a stored program.
The embodiment of the present invention further provides a schematic structural diagram of a terminal device, as shown in fig. 6, including a receiving unit 601 and a retransmitting unit 602; wherein:
the receiving unit is used for receiving the video data sent by the gateway equipment through the first WiFi channel;
and the retransmission unit is used for determining that the video data are lost, sending a retransmission request to the gateway equipment through the second WiFi channel, and receiving the video data which are returned by the gateway equipment and request to be retransmitted.
Further, these units implement the related functions in the foregoing method, and are not described again.
In this embodiment, the terminal device is presented in the form of a functional unit. An "element" may refer to an application-specific integrated circuit (ASIC), an electronic circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other devices that may provide the described functionality. In a simple embodiment, the terminal device may be implemented using a processor, a memory, and a communication interface, as will be appreciated by those skilled in the art.
The terminal device in the embodiment of the present invention may also be implemented in the form of a computer device (or system) in fig. 7. Fig. 7 is a schematic diagram of a computer device according to an embodiment of the present invention. The computer device comprises at least one processor 701, a communication bus 702, a memory 703 and at least one communication interface 704, and may further comprise an IO interface 705.
The processor may be a general purpose Central Processing Unit (CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits configured to control the execution of programs in accordance with the inventive arrangements.
The communication bus may include a path that transfers information between the aforementioned components.
A communication interface, using any transceiver or the like, for communicating with other devices or communication Networks, such as ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), etc. In the invention, the communication interface comprises two WiFi communication modules.
The Memory may be, but is not limited to, a Read-Only Memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical Disc storage, optical Disc storage (including Compact Disc, laser Disc, optical Disc, digital versatile Disc, blu-ray Disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory may be self-contained and coupled to the processor via a bus. The memory may also be integral to the processor.
Wherein the memory is used for storing application program codes for executing the scheme of the invention and is controlled by the processor to execute. The processor is configured to execute application program code stored in the memory.
In particular implementations, the processor may include one or more CPUs, each of which may be a single-Core (si — Core) processor or a multi-Core (multi-Core) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).
In particular implementations, the computer device may also include an input/output (I/O) interface, as one embodiment. For example, the output device may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display device, a Cathode Ray Tube (CRT) display device, a projector (projector), or the like. The input device may be a mouse, a keyboard, a touch screen device or a sensing device, etc.
The computer device may be a general purpose computer device or a special purpose computer device. In a specific implementation, the computer device may be a desktop computer, a laptop computer, a web server, a Personal Digital Assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, a communication device, an embedded device, or a device with a similar structure as in fig. 7. The embodiment of the invention does not limit the type of the computer equipment.
The terminal device as in fig. 1 may be the device shown in fig. 7, with one or more software modules stored in the memory. The terminal device may implement the software module by a processor and program code in a memory to perform the above method.
Embodiments of the present invention also provide a computer storage medium for storing computer software instructions for the apparatus shown in fig. 6 or fig. 7, which includes a program designed to execute the above method embodiments. The above method can be implemented by executing a stored program.
While the invention has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed invention, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus (device), 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. A computer program stored/distributed on a suitable medium supplied together with or as part of other hardware, may also take other distributed forms, such as via the Internet or other wired or wireless telecommunication systems.
The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (devices) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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 means 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 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 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.
While the invention has been described in conjunction with specific features and embodiments thereof, it will be apparent that various modifications and combinations thereof are possible. Accordingly, the specification and figures are merely exemplary of the invention as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the invention. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (20)

1. A video transmission method is applied to a gateway device, and is characterized by comprising the following steps:
receiving video data sent by a video server;
forwarding the received video data to terminal equipment through a first WiFi channel;
receiving a retransmission request of terminal equipment through a second WiFi channel, wherein the second WiFi channel and the first WiFi channel are WiFi channels with different signal frequencies;
and sending the video data requested to be retransmitted to the terminal equipment according to the retransmission request.
2. The method of claim 1, wherein the gateway device receives the video data sent by the video server in a multicast manner and forwards the video data to the terminal device in a multicast manner.
3. The method of claim 1 or 2, wherein the first WiFi channel is a 5G-WiFi channel and the second WiFi channel is a 2.4G-WiFi channel.
4. The method of claim 1 or 2, wherein the requested retransmission of video data is sent to the terminal device over the first WiFi channel or the second WiFi channel.
5. The method of claim 1 or 2, wherein prior to receiving the video data, the method further comprises:
and sending a Service Set Identifier (SSID) and a password of second WiFi to the terminal equipment through the first WiFi channel, and establishing a second WiFi channel with the terminal equipment according to the SSID and the password.
6. A video transmission method is applied to a terminal device, and is characterized by comprising the following steps:
receiving video data sent by gateway equipment through a first WiFi channel;
determining that there is lost video data;
sending a retransmission request to gateway equipment through a second WiFi channel, wherein the second WiFi channel and the first WiFi channel are WiFi channels with different signal frequencies;
and receiving the video data which is returned by the gateway equipment and requests for retransmission.
7. The method of claim 6, wherein the video data forwarded by the gateway device is received by the end device in a multicast manner.
8. The method of claim 6 or 7, wherein the first WiFi channel is a 5G-WiFi channel and the second WiFi channel is a 2.4G-WiFi channel.
9. The method of claim 6 or 7, wherein the requested retransmitted video data returned by a gateway device is received over the first WiFi channel or the second WiFi channel.
10. The method of claim 6 or 7, wherein prior to receiving the video data, the method further comprises:
and the terminal equipment receives a Service Set Identifier (SSID) and a password of second WiFi from the gateway equipment through the first WiFi channel, and establishes a second WiFi channel with the gateway equipment according to the SSID and the password.
11. A gateway device, comprising:
the receiving unit is used for receiving the video data sent by the video server;
the transmitting unit is used for transmitting the received video data to the terminal equipment through a first WiFi channel;
and the retransmission unit is used for receiving a retransmission request of the terminal equipment through a second WiFi channel and sending video data requesting retransmission to the terminal equipment according to the retransmission request, wherein the second WiFi channel and the first WiFi channel are WiFi channels with different signal frequencies.
12. The gateway device according to claim 11, wherein the receiving unit receives the video data transmitted by the video server in a multicast manner, and the transmitting unit forwards the video data to the terminal device in a multicast manner.
13. The gateway device of claim 11 or 12, wherein the first WiFi channel is a 5G-WiFi channel and the second WiFi channel is a 2.4G-WiFi channel.
14. The gateway device according to claim 11 or 12, wherein the retransmission unit transmits the retransmission-requested video data to the terminal device through the first WiFi channel or the second WiFi channel.
15. The gateway device according to claim 11 or 12, wherein the sending unit is further configured to send a service set identification, SSID, and password for the second WiFi to the terminal device through the first WiFi channel, and establish a second WiFi channel with the terminal device according to the SSID and password.
16. A terminal device, comprising:
the receiving unit is used for receiving the video data sent by the gateway equipment through the first WiFi channel;
and the retransmission unit is used for determining that lost video data exist, sending a retransmission request to the gateway equipment through a second WiFi channel, and receiving the video data which are returned by the gateway equipment and request to be retransmitted, wherein the second WiFi channel and the first WiFi channel are WiFi channels with different signal frequencies.
17. The terminal device according to claim 16, wherein the receiving unit receives the video data forwarded by the gateway device in a multicast manner.
18. The terminal device of claim 16 or 17, wherein the first WiFi channel is a 5G-WiFi channel and the second WiFi channel is a 2.4G-WiFi channel.
19. The terminal device according to claim 16 or 17, wherein the video retransmission unit receives the retransmission-requested video data returned by the gateway device through the first WiFi channel or the second WiFi channel.
20. The terminal device of claim 16 or 17, wherein the receiving unit is further configured to receive a service set identification, SSID, and a password for a second WiFi from the gateway device over the first WiFi channel, and to establish a second WiFi channel with the gateway device according to the SSID and the password.
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