CN106791668A - A kind of requesting terminal, transmission terminal, system and method shared based on DSRC videos - Google Patents
A kind of requesting terminal, transmission terminal, system and method shared based on DSRC videos Download PDFInfo
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- CN106791668A CN106791668A CN201611239129.3A CN201611239129A CN106791668A CN 106791668 A CN106791668 A CN 106791668A CN 201611239129 A CN201611239129 A CN 201611239129A CN 106791668 A CN106791668 A CN 106791668A
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- Prior art keywords
- terminal
- data
- data frame
- video
- video data
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Classifications
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
- H04N21/41422—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance located in transportation means, e.g. personal vehicle
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
- H04N21/43637—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11]
Abstract
The invention provides video sharing method between a kind of vehicle based on DSRC, car networking system is applied to, a requesting terminal and a transmission terminal of the vehicle net system at least including wireless connection, method include：Receive the request signal that the requesting terminal sends；Obtain the video data of the upper camera that same vehicle is arranged on the transmission terminal；The video data is sent to the requesting terminal by DRSC technologies, so that the display terminal being connected with the requesting terminal plays the video data.Using the present invention, driver can in advance see the various relevant informations (such as real-time road, road information, pedestrian information) with traffic trip, so as to improve the security of driving, reduce urban traffic blocking, lifting traffic trip quality.
Description
Technical field
The application is related to intelligent parking field, and more particularly to a kind of requesting terminal, transmission shared based on DSRC videos is eventually
End, system and method.
Background technology
Car networking is based on in-car net, car border net and vehicle-mounted mobile internet, according to the communication protocol sum of agreement
According to interactive standards, in car-X (X：Car, road, pedestrian and internet etc.) between, communicate wirelessly the big system exchanged with information
Network, is that by the integrated network of intelligent traffic management, Intelligent Dynamic information service and Vehicular intelligentization control.
In vehicle traveling way, especially in fixed fleet advances, the vehicle behind fleet has to be seen before it
The demand of Vehicular visual, facilitates rear car driver to make road conditions, emergency case and timely responds.
The content of the invention
In order to solve the above technical problems, the invention provides video sharing method between a kind of vehicle based on DSRC, application
In car networking system, a requesting terminal and a transmission terminal of the vehicle net system at least including wireless connection, method
Including：
Receiving step, receives the request signal that the requesting terminal sends；
Obtaining step, obtains the video data of the upper camera that same vehicle is arranged on the transmission terminal；
Forwarding step, the video data is sent to the requesting terminal by DRSC technologies so that with the request
The connected display terminal of terminal plays the video data.
Further, the vehicle net system also includes a plurality of forwarding terminals, then the forwarding step is specially：
The video data is split into the subdata of default size, and the subdata is assembled into data frame, wherein
The data frame includes the address of the requesting terminal, subdata label and hop count；
The data frame is sent to the vehicle net system by DRSC technologies；
After the requesting terminal or the forwarding terminal receive the data frame, the request end in the data frame is judged
Whether the address at end is identical with the address of itself；
If identical, the data frame is sent to the display terminal, so that the display terminal plays the video
Data；
If differing, judge whether the hop count in the data frame is 0,
If being not 0, after subtracting one by the hop count in the data frame, the vehicle is sent to by DRSC technologies
Net system；
If 0, then the data frame is abandoned.
Further, it is described, the data frame is sent to the display terminal, so that the display terminal plays institute
Video data step is stated to be specially：
The data frame is sent to the display terminal；
Judge saved number in the data queue in the subdata label and the display terminal in the data frame
Whether the subdata label according to entry is identical；
If identical, the data frame is abandoned；
If differing, the data frame is deposited and generates Data Entry into data queue by the display terminal；
When the quantity of the Data Entry is more than the first preset value, decodes the Data Entry and generate the video data
And play.Deleted after broadcasting, label is less than and does not play.
Further, the forwarding step also includes：
When the requesting terminal or the display terminal often receive the data frame of the second preset value quantity, to the transmission
One acknowledgement frame of terminal replies.
Further, the obtaining step is specially：
The camera is set used as RTSP server end, the transmission terminal is RTSP client；
The RTSP client sends query statement to the RTSP server end；
Reply the order that can be performed in the RTSP server end；
The RTSP client sends description instruction to the RTSP server end, and request RTSP server describes itself
Video data；
After being replied, the RTSP client obtains the video data.
Further, the transmission terminal includes first antenna and the second antenna, then also wrapped before the receiving step
Include：
The first antenna and second antenna are respectively provided with the both sides of installed vehicle.
On the other hand, terminal is sent the invention also discloses a kind of video based on DSRC, including：
Receiver module, the request signal for receiving requesting terminal transmission；
Acquisition module, the video data for obtaining the upper camera that same vehicle is arranged on the transmission terminal；
Transmitter module, for the video data to be sent to the requesting terminal by DRSC technologies so that with it is described
The connected display terminal in requesting terminal plays the video data.
Further, also including being separately positioned on the first antenna and the second antenna of vehicle both sides.
Further, a kind of video request terminal based on DSRC is also disclosed, including：
Order sending module, for obtaining request signal from display terminal and sending to transmission terminal；
Video forwarding module, for receiving video data from the transmission terminal by DRSC technologies, and is transmitted to display
Terminal is playing the video data.
On the other hand, the invention also discloses a kind of shared car networking system of video based on DSRC, including at least one
It is as described above to send terminal, at least one request end as described above being wirelessly connected by DSRC with the transmission terminal
End.
Compared with prior art, the application has the beneficial effect that：
Driver can see and the various relevant informations of traffic trip (such as real-time road, road information, Hang Renxin in advance
Breath etc.), so as to improve the security of driving, reduce urban traffic blocking, lifting traffic trip quality.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in the embodiment of the present application, below will be to make needed for embodiment description
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present application, for
For those of ordinary skill in the art, without having to pay creative labor, it can also be obtained according to these accompanying drawings
His accompanying drawing.
Fig. 1 be the application provide a kind of vehicle based on DSRC between video sharing method flow chart；
Fig. 2 be the application provide another be based on DSRC vehicle between video sharing method flow chart.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only some embodiments of the present application, rather than whole embodiments.It is based on
Embodiment in the application, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of the application protection.
Embodiment one, the invention discloses video sharing method between a kind of vehicle based on DSRC, is applied to car networking system
System, the vehicle net system at least including wireless connection a requesting terminal and one transmission terminal, wherein requesting terminal and
The display terminal being arranged on it on same vehicle is connected by wifi, is sent terminal and is arranged on taking the photograph on same vehicle with it
As head is connected.It should be understood that requesting terminal and send terminal and can be integrated into a V2X vehicle communication terminal, then vehicle net
Network system can include two wireless connected V2X vehicle communication terminals.
According to 802.11p standard combination actual conditions, the V2X vehicle communication terminals based on DSRC technology, that is, ask
The traffic rate of 3Mbps~27Mbps can be supported between terminal and transmission terminal, mainstream network monitoring camera on the market is chosen
Head obtains video, and frame per second is 25fps, the upper limit of code check is set to 2048kbps, i.e. 2Mbps, and the coding to video is used
H.264 encode.
As shown in figure 1, method includes：
Step S101:Receive the request signal that the requesting terminal sends；
Specifically, display terminal initiates request signal, the requesting terminal of this car, the request end of this car are sent to by wifi
After end receives the request signal, start parsing, then sent to the transmission terminal specified in request signal by DSRC passages and regarded
Frequency is asked.It should be understood that request signal includes specifying the MAC Address or device numbering for sending terminal, send terminal and receive
To after the request signal, wherein corresponding with itself MAC Address or device numbering comprising MAC Address or device numbering, ability is confirmed
The request signal is processed, the signal is otherwise abandoned.
Step S102:Obtain the video data of the upper camera that same vehicle is arranged on the transmission terminal；
Step S103:The video data is sent to the requesting terminal by DRSC technologies so that with the request
The connected display terminal of terminal plays the video data.
It should be understood that V2X vehicle communication terminals are by the way of control information and data message separating treatment.In DSRC
Same channel on, control information is received and dispatched using obu_lsn_control_fd, obu_snd_control_fd handle
Operation, data message is operated using the transmitting-receiving that obu_lsn_video_fd, obu_snd_video_fd handle carry out video data.
Obtaining the video data of camera includes sending instruction successively from RTSP client to RTSP server end and receiving replying, tool
Body is：
The camera is set used as RTSP server end, the transmission terminal is RTSP client；
The RTSP client sends query statement to the RTSP server end；
Reply the order that can be performed in the RTSP server end；The instruction that can be performed includes, OPTIONS,
DESCRIBE,PLAY,PAUSE,SETUP,TEARDOWN,SET_PARAMETER,GET_PARAMETER.Next step just can be to
RTSP server sends these orders, if it is not, RTSP server does not receive these orders.
The RTSP client sends description instruction to the RTSP server end, and request RTSP server describes itself
Video data；SETUP is sent after receiving reply, acquisition request video resource simultaneously informs that RTSP server can be toward RTSP client
Port sends video data, and obtains the video data.
After the completion of video data is obtained, RTSP client needs to send TEARDOWN to close data transfer, discharges RTSP
Server resource.
Using the present invention, driver can see and the various relevant informations of traffic trip (such as real-time road, road in advance
Information, pedestrian information etc.), so as to improve the security of driving, reduce urban traffic blocking, lifting traffic trip quality.
On the physical condition of transmission, to blocking sensitivity, if barrier, communication can be interrupted DSRC technology, it may appear that
A large amount of packet losses, are presented as that broadcasting is interrupted in the display of video, situations such as spending screen occur, to solve this problem.
As shown in Fig. 2 the invention also discloses embodiment two, the vehicle net system is also on the basis of a upper embodiment
Including a plurality of forwarding terminals, wherein forwarding terminal can also be integrated in V2X vehicle communication terminals, many in use
Closely located vehicle each car is provided with a V2X vehicle communication terminal, and each V2X vehicle communication terminal is dynamically by certainly
Networking technology constitutes the vehicle net system of wireless connection, and each V2X vehicle communication terminal is directly or by other V2X in the system
Vehicle-carrying communication end indirect wireless communication.
Then the step S103 is specially：
S201：The video data is split into the subdata of default size, and the subdata is assembled into data frame,
Wherein described data frame packet includes the address of the requesting terminal, subdata label and hop count；The wherein address of requesting terminal,
Subdata label constitutes a unique mark, and subdata label is incremented by successively.
S202：The data frame is sent to the vehicle net system by DRSC technologies；
S203：After the requesting terminal or the forwarding terminal receive the data frame, in judging the data frame
Whether the address of requesting terminal is identical with the address of itself；
If identical, step S204 is performed, if differing, perform step S205；
S204：The data frame is sent to the display terminal, so that the display terminal plays the video data；
S205：Judge whether the hop count in the data frame is 0,
If not being 0, step S207 is performed, if 0, then perform step S206；
S207:After subtracting one by the hop count in the data frame, the vehicle net system is sent to by DRSC technologies；
S206:If 0, then the data frame is abandoned.
Wherein step S204 is specially：
The data frame is sent to the display terminal；
Judge saved number in the data queue in the subdata label and the display terminal in the data frame
Whether the subdata label according to entry is identical；It is readily appreciated that, can is the shape of broadcast in vehicle net system due to data frame
What formula sent, therefore may be multiple by the data frame that forwarding terminal reaches requesting terminal, therefore identical data need to be deleted
Frame is saving space.Similarly, because subdata label is incremented by successively, therefore the subdata mark in the new data frame for receiving
Number if less than saved in data queue, then it is also required to delete.
If differing, the data frame is deposited and generates Data Entry into data queue by the display terminal；
When the quantity of the Data Entry is more than the first preset value, decodes the Data Entry and generate the video data
And play.Buffering can effectively strengthen the experience of broadcasting, prestored by queue and start to broadcast after a number of data frame
Put, broadcasting experience can be effectively strengthened on the premise of real-time is not influenceed.
It is the robustness of strengthening system, the requesting terminal or the display terminal often receive the second preset value quantity
During data frame, such as 500 data frames, to described transmission one acknowledgement frame of terminal replies.
Wherein, the transmission terminal includes first antenna and the second antenna, the first antenna and second antenna point
Not An Zhuan vehicle the left and right sides.
Using this method, in the case where blocking, video data can reach mesh requesting terminal by forwarding terminal, together
When by buffered video data, antenna is arranged on the means such as left and right vehicle wheel both sides and improves video playback experience.
Terminal, including be separately positioned on vehicle both sides first are sent present invention also offers a kind of video based on DSRC
Antenna and the second antenna,
Sending terminal also includes：
Receiver module, the request signal for receiving requesting terminal transmission；
Acquisition module, the video data for obtaining the upper camera that same vehicle is arranged on the transmission terminal；
Transmitter module, for the video data to be sent to the requesting terminal by DRSC technologies so that with it is described
The connected display terminal in requesting terminal plays the video data.
Wherein transmitter module includes：
Decomposer, the subdata for the video data to be split into default size, and the subdata is assembled
Into data frame, wherein the data frame packet includes the address of the requesting terminal, subdata label and hop count；
Broadcaster, for the data frame to be sent into the vehicle net system by DRSC technologies；
A kind of video request terminal based on DSRC is also disclosed, including：
Order sending module, for obtaining request signal from display terminal and sending to transmission terminal；
Video forwarding module, for receiving video data from the transmission terminal by DRSC technologies, and is transmitted to display
Terminal is playing the video data.
Video forwarding module, also includes：
Judgment means, after receiving the data frame, judge requesting terminal in the data frame address whether
Address with itself is identical,
If identical, the data frame is sent to the display terminal, so that the display terminal plays the video
Data；
If differing, judge whether the hop count in the data frame is 0,
If being not 0, after subtracting one by the hop count in the data frame, the vehicle is sent to by DRSC technologies
Net system；
If 0, then the data frame is abandoned.
The invention also discloses a kind of forwarding terminal, after receiving the data frame, in judging the data frame
Whether the address of requesting terminal is identical with the address of itself,
If identical, the data frame is sent to the display terminal, so that the display terminal plays the video
Data；
If differing, judge whether the hop count in the data frame is 0,
If being not 0, after subtracting one by the hop count in the data frame, the vehicle is sent to by DRSC technologies
Net system；
If 0, then the data frame is abandoned.
Wherein requesting terminal, transmission terminal and forwarding terminal can be integrated into a V2X vehicle communication terminal.
A kind of shared car networking system of video based on DSRC, including at least one transmission terminal as described above, at least one
The individual requesting terminal as described above being wirelessly connected by DSRC with the transmission terminal.It is readily appreciated that, one kind is based on DSRC
The shared car networking system of video be specially a plurality of wireless connected V2X vehicle communication terminals.
It should be noted that herein, term " including ", "comprising" or its any other variant be intended to non-row
His property is included, so that process, method, article or equipment including a series of key elements not only include those key elements, and
And also include other key elements being not expressly set out, or also include for this process, method, article or equipment institute are intrinsic
Key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including institute
Also there is other identical element in process, method, article or the equipment of stating key element.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or uses the present invention.
Various modifications to these embodiments are for those skilled in the art it will be apparent that as defined herein one
As principle can realize in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention will
Will not be intended to be limited to the embodiments shown herein, and be to fit to consistent with principles disclosed herein and features of novelty
Widest range.
Claims (10)
1. video sharing method between a kind of vehicle based on DSRC, is applied to car networking system, it is characterised in that the vehicle net
A requesting terminal and a transmission terminal of the system at least including wireless connection, method include：
Receiving step, receives the request signal that the requesting terminal sends；
Obtaining step, obtains the video data of the upper camera that same vehicle is arranged on the transmission terminal；
Forwarding step, the video data is sent to the requesting terminal by DRSC technologies so that with the requesting terminal
Connected display terminal plays the video data.
2. method according to claim 1, it is characterised in that the vehicle net system also includes a plurality of forwarding terminals,
Then the forwarding step is specially：
The video data is split into the subdata of default size, and the subdata is assembled into data frame, wherein described
Data frame includes the address of the requesting terminal, subdata label and hop count；
The data frame is sent to the vehicle net system by DRSC technologies；
After the requesting terminal or the forwarding terminal receive the data frame, requesting terminal in the data frame is judged
Whether address is identical with the address of itself；
If identical, the data frame is sent to the display terminal, so that the display terminal plays the video data；
If differing, judge whether the hop count in the data frame is 0,
If being not 0, after subtracting one by the hop count in the data frame, the vehicle net system is sent to by DRSC technologies
System；
If 0, then the data frame is abandoned.
3. method according to claim 2, it is characterised in that described, the display is sent to eventually by the data frame
End, so that the display terminal is played the video data step and is specially：
The data frame is sent to the display terminal；
Judge saved data strip in the data queue in the subdata label and the display terminal in the data frame
Whether purpose subdata label is identical；
If identical, the data frame is abandoned；
If differing, the data frame is deposited and generates Data Entry into data queue by the display terminal；
When the quantity of the Data Entry is more than the first preset value, decodes the Data Entry and generate the video data and broadcast
Put.
4. according to the method in claim 2 or 3, it is characterised in that the forwarding step also includes：
When the requesting terminal or the display terminal often receive the data frame of the second preset value quantity, to the transmission terminal
Reply an acknowledgement frame.
5. method according to claim 1, it is characterised in that the obtaining step is specially：
The camera is set used as RTSP server end, the transmission terminal is RTSP client；
The RTSP client sends query statement to the RTSP server end；
Reply the order that can be performed in the RTSP server end；
The RTSP client sends description instruction to the RTSP server end, and request RTSP server describes the video of itself
Data；
After being replied, the RTSP client obtains the video data.
6. the method according to any one of claim 1-3,5,6, it is characterised in that the transmission terminal includes first antenna
With the second antenna, then also included before the receiving step：
The first antenna and second antenna are respectively provided with the both sides of installed vehicle.
7. a kind of video based on DSRC sends terminal, it is characterised in that including：
Receiver module, the request signal for receiving requesting terminal transmission；
Acquisition module, the video data for obtaining the upper camera that same vehicle is arranged on the transmission terminal；
Transmitter module, for the video data to be sent to the requesting terminal by DRSC technologies so that with the request
The connected display terminal of terminal plays the video data.
8. transmission terminal according to claim 7, it is characterised in that also including being separately positioned on first day of vehicle both sides
Line and the second antenna.
9. a kind of video request terminal based on DSRC, it is characterised in that including：
Order sending module, for obtaining request signal from display terminal and sending to transmission terminal；
Video forwarding module, for receiving video data from the transmission terminal by DRSC technologies, and is transmitted to display terminal
To play the video data.
10. the shared car networking system of a kind of video based on DSRC, it is characterised in that including at least one such as claim 7 or 8
Described transmission terminal, at least one request as claimed in claim 9 being wirelessly connected by DSRC with the transmission terminal
Terminal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611239129.3A CN106791668A (en) | 2016-12-28 | 2016-12-28 | A kind of requesting terminal, transmission terminal, system and method shared based on DSRC videos |
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| CN201611239129.3A CN106791668A (en) | 2016-12-28 | 2016-12-28 | A kind of requesting terminal, transmission terminal, system and method shared based on DSRC videos |
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| CN113873199B (en) * | 2021-09-23 | 2023-11-21 | 上汽大众汽车有限公司 | Vehicle-mounted camera sharing system and method based on direct connection communication and cellular network communication |
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