CN104539738A - Vehicle self-organization network for LED communication - Google Patents
Vehicle self-organization network for LED communication Download PDFInfo
- Publication number
- CN104539738A CN104539738A CN201510033106.6A CN201510033106A CN104539738A CN 104539738 A CN104539738 A CN 104539738A CN 201510033106 A CN201510033106 A CN 201510033106A CN 104539738 A CN104539738 A CN 104539738A
- Authority
- CN
- China
- Prior art keywords
- vehicle
- self
- led communication
- led
- communication unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Abstract
The invention relates to a vehicle self-organization network for LED communication and belongs to the technical field of automobiles. The vehicle self-organization network consists of nodes containing vehicle-mounted LED communication units, wherein the nodes comprise a vehicle terminal node and a mobile relay node; the vehicle terminal node communicates with the mobile relay node in the self-organization network by virtue of the vehicle-mounted LED communication units; the mobile relay node communicates with mobile relay nodes in other self-organization networks by virtue of the vehicle-mounted LED communication units; and the vehicle self-organization network also comprises a fixed access point, the vehicle terminal node can communicate with the fixed access point by virtue of the LED communication units, and all the LED communication units in the network perform communication by adopting a phase shift MIMO-OFDM (Multiple Input Multiple Output-Orthogonal Frequency Division Multiplexing) LED communication system. The vehicle self-organization network for LED communication, provided by the invention, ensures that each vehicle is in a 'car in the net' state, and has a function of resisting a multipath effect and intersymbol interference, so that the LED communication among vehicles is realized reliably.
Description
Technical field
The invention belongs to automobile technical field, relate to a kind of vehicle self-organizing network of LED communication.
Background technology
LED have low in energy consumption, the life-span is long, size is little, the advantage such as pollution-free is regarded as the energy saving and environment friendly product of forth generation.Have that traffic rate is high, capacity is large based on LED visible light communication, highly sensitive, without advantages such as electromagnetic interference, be a kind of new wireless light communication technology.The region to electromagnetic interference sensitivity such as hospital, aircraft, high ferro can be applied to, also as wireless broadband Internet access, the problem of " last one kilometer " can be solved.
Vehicle self-organizing network (VANET, Vehicular Ad Hoc Network) be traditional mobile ad-hoc network (MANET, Mobile Ad Hoc Network) application on traffic route is a kind of special mobile ad-hoc network.The major reason that its quality of wireless channel is unstable, network topology change becomes the development of restriction vehicle self-organizing network soon.VANET is at intelligent transportation system (ITS, Intelligent Transportation System) in play very important role, primarily of inter-vehicle communication (V2V, Vehicle-to-Vehicle Communication) communicate with bus or train route (V2R, Vehicle-to-Road Communication) two parts composition.Headlight in vehicle and tail-light are made up of LED, and the existing function only for throwing light on, the function of not communication, based on LED visible light communication LED not only as lighting apparatus, and has the function of communication.
Multiple-input and multiple-output (MIMO, Multiple input Multiple output) system can improve capacity and the availability of frequency spectrum of communication system exponentially under the prerequisite not increasing bandwidth, increases the reliability of communication link simultaneously.OFDM modulation technology (OFDM; Orthogonal Frequency Division Multiple) high-speed data of serial is modulated on multiple orthogonal subcarrier concurrently; reduce chip rate; decrease intersymbol interference; serious channel is affected for multipath effect; between each OFDM symbol, add protection interval, eliminate the intersymbol interference that multipath effect causes further.Therefore utilize vehicle to form MIMO-OFDM communication system, realize inter-vehicular communication.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of vehicle self-organizing network of LED communication, this vehicle self-organizing network can realize making each vehicle be in " car is at net (Vehicle in Network) " state.
For achieving the above object, the invention provides following technical scheme:
A vehicle self-organizing network for LED communication, this vehicle self-organizing network is made up of the node containing vehicle LED communication unit; Described node comprises vehicle termination node, mobile relay node; Described vehicle termination node is communicated with the mobile relay node in self-organizing network by vehicle LED communication unit; Mobile relay node is communicated with the mobile relay node of other self-organizing networks by vehicle LED communication unit.
Further, described vehicle LED communication unit comprises transmitter and receiver and other communications processor elements, and vehicle LED communication unit has duplex communication mode; The LED angle of departure of described vehicle LED communication unit is greater than the angle of visual field of receiver; LED direct current channel gain is as shown by the following formula:
Wherein, m is lambert's index, and A is the surface area of receiver, and d is the distance of transmitted from transmitter to receiver, and φ is the angle of departure,
for acceptance angle,
maximum field of view of receiver angle, n is index of refraction.
Further, described vehicle LED communication unit is provided with the interface with other devices communicatings, when not realizing LED visible light communication, can realize communication interconnected by other communication modes.
Further, described vehicle LED communication unit comprises headlight LED communication unit and tail-light LED communication unit; When vehicle termination node is positioned at before mobile relay node, the tail-light LED communication unit of vehicle termination node communicates with the headlight LED communication unit of mobile relay node; When vehicle termination node is positioned at after mobile relay node, the headlight LED communication unit of vehicle termination node communicates with the tail-light LED communication unit of mobile relay node; Double bounce and multi-hop communication is realized by mobile relay node.
Further, described vehicle self-organizing network also comprises fixed access point, and described fixed access point contains the LED communication unit with duplex communication mode; Vehicle termination node is communicated with fixed access point by LED communication unit, and fixed access point can communicate with other networks.
Further, when communicating between vehicle with fixed access point, direct current channel impulse response as shown by the following formula:
Wherein, φ is the angle of departure,
for acceptance angle, initial distance is set to d, and v is current vehicle speed.
Further, described LED communication unit adopts phase shift MIMO-OFDM LED communication system to communicate, and data are carried out phase shift T/N time delay and sent after MIMO-OFDM serioparallel exchange, receiver is sampled with T/N sampling rate, T is the OFDM symbol cycle, and N is LED communication unit number, N=2.
Further, when described vehicle termination node communicates with mobile relay node, two vehicles travel in the same way, and between two vehicles, direct current channel impulse response is as shown by the following formula:
Wherein, φ is the angle of departure,
for acceptance angle, initial distance is set to d, and vehicle speed is respectively v
1, v
2.
Further, described mobile relay node is the distance sum D in self-organizing network between this vehicle to other vehicles
iminimum vehicle;
Wherein,
(x
i, y
i) and (x
j, y
j) be the coordinate of vehicle, M is the number of vehicle in current self-organizing network.
Further, mobile relay node in described vehicle termination node and self-organizing network or fixed access point hypertelorism, can not proper communication time, vehicle termination node disconnects and mobile relay node link automatically, and transmit into net request data package, join other self-organizing networks; After adjacent mobile relay node or fixed access point receive the request of networking, first judge whether the distance of this vehicle meets communication condition, not meeting then does not allow it to add network, satisfied then continuation judges in this self-organization network, whether total nodes reaches the upper limit, if do not reach the upper limit, it is then allowed to add, otherwise, do not allow it to add network.
Beneficial effect of the present invention is: the vehicle self-organizing network of a kind of LED communication provided by the invention, adopts LED communication technology, have that traffic rate is high, capacity is large, highly sensitive, without advantages such as electromagnetic interference; LED communication unit adopts phase shift MIMO-OFDM LED communication system to communicate, improve the ability of anti-multipath effect and subcarrier interference, reduce the error rate, make inter-vehicular communication more reliable, more at a high speed, safer, and then LED communication between vehicle is reliably realized, make each vehicle be in " car is at net " state.
Accompanying drawing explanation
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, wherein:
Fig. 1 is the vehicle self-organizing network of LED communication of the present invention;
Fig. 2 is vehicle LED communication unit launching and receiving flow chart of data processing;
Fig. 3 is phase shift 2 × 2 MIMO-OFDM LED communication system data handling process;
Fig. 4 is running automobile schematic diagram in the same way;
Fig. 5 is that vehicle adds self-organizing network flow chart;
Fig. 6 is that vehicle self-organizing network is communicated by mobile relay node.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
The vehicle self-organizing network of a kind of LED communication proposed by the invention, this self-organizing network is made up of the node containing vehicle LED communication unit, as shown in Figure 1, utilize the duplex communication that headlight and tail-light composition vehicle LED communication unit realize between vehicle, described node comprises vehicle termination node, mobile relay node; Described vehicle termination node is communicated with the mobile relay node in self-organizing network by vehicle LED communication unit; Mobile relay node is communicated with the mobile relay node of other self-organizing networks by vehicle LED communication unit.
Vehicle self-organizing network also comprises fixed access point, when vehicle travels on remote road, vehicle is not had very on a large scale, do not realize the condition of inter-vehicular communication, only has the street lamp that highway is other, vehicle can only realize information interaction with fixed access point (as street lamp), and described fixed access point contains the LED communication unit with duplex communication mode; Vehicle termination node is communicated with fixed access point by LED communication unit.Fixed access point can realize communicating with existing cordless communication network with mobile relay node, can expand the scope of vehicle self-organizing network communication to a greater extent.Vehicle self-organizing network communication comprises inter-vehicle communication, vehicle and communicates with fixed access point and vehicle group-net communication.
The design of vehicle LED communication unit is as follows:
Each vehicle should as LED light source transmitter, again must as receiver (receiver type has photodiode, imageing sensor etc.); Add that receiver forms vehicle LED communication unit at the headlight of vehicle and tail-light, this element has duplex communication mode; Vehicle LED communication unit flow chart of data processing as shown in Figure 2.
LED direct current channel gain is as shown in formula (1):
Wherein, m is lambert's index, and A is the surface area of receiver, and d is the distance of transmitted from transmitter to receiver, and φ is the angle of departure,
for acceptance angle,
maximum field of view of receiver angle, n is index of refraction.
Vehicle LED communication unit meets following designing requirement:
1. the middle LED angle of departure of transmitting data handling process Fig. 2 (a) of vehicle LED communication unit should be greater than the angle of visual field of receiver in reception flow chart of data processing Fig. 2 (b) of vehicle LED communication unit;
2. vehicle LED communications unit design has the interface with other devices communicatings, as bluetooth, and WiFi, vehicle GPS, BEI-DOU position system etc.;
3. vehicle LED communication unit can not affect other functions of vehicle.
LED communication unit of the present invention adopts phase shift MIMO-OFDM LED communication system to communicate, and data carry out a phase shift T/N time delay after MIMO-OFDM serioparallel exchange, and receiver is sampled with T/N sampling rate.
The complexity of road environment causes communication link unstable, multipath effect causes intersymbol interference serious, make communication performance extreme difference, therefore in order to improve the ability of anti-multipath effect and subcarrier interference, the present invention proposes after MIMO-OFDM serioparallel exchange, carry out a phase shift T/N time delay, T is the OFDM symbol cycle, and N is LED communication unit number.Headlight has two LED vehicle-carrying communication unit, i.e. N=2, and become binary code stream to the data sent through over-sampling, quantification, coding, headlight A-LED communication unit compares headlight B-LED communication unit data phase shift T/2 phase place.Sample with T/2 sampling period at receiving terminal, the date restoring obtained is become initial data.Phase shift 2 × 2 MIMO-OFDM LED communication system is applicable to road inter-vehicle communication, suppresses intersymbol and inter-sub-carrier interference to a greater extent, greatly reduces the error rate, make inter-vehicular communication more reliable, more at a high speed, safer, Fig. 3 is phase shift 2 × 2 MIMO-OFDM LED communication system data handling process.
Data flow is at a high speed divided into the data flow of low speed through serioparallel exchange, and phase shift T/N, the signal after phase shift is V
it () is as shown in formula (2):
Through chnnel coding, IFFT, add CP, driving LED chip, when the electric current of driving LED chip is not greater than saturation current, then Y
i(t)=RV
it (), R is the photoelectric conversion efficiency of LED.Receiver is sampled with T/N sampling rate, receiver signal r
it () is as shown in formula (3):
Wherein, n (t) is interchannel noise, h
ifor channel impulse response.Signal obtains initial data through past CP, FFT, channel decoding, realizes the information exchange between vehicle.
On the basis of above-mentioned phase shift 2 × 2 MIMO-OFDM LED communication system, achieve vehicle and communicate with inter-vehicular communication with between vehicle with fixed access point.
Communicate between vehicle with vehicle:
Between vehicle, the direction of movement is divided in the same way and backward going, because LED-based visible light communication system is limited to communication distance, along with the increase of communication distance, receiving terminal accept luminous power rapid decay, the error rate increase.Therefore LED-based visible light communication is applicable to situation about travelling in the same way, and the vehicle communication link life period travelled in the same way is relatively long.Fig. 4 is the schematic diagram of the vehicle inter-vehicle communication travelled in the same way.In order to better realize inter-vehicular communication, the channel impulse response of linear time-variant channel must provide, just can calculate the data of receiving terminal.Between the vehicle of two movements, direct current channel impulse response is as shown in formula (4).
Wherein, initial distance is set to d, and vehicle speed is respectively v
1, v
2, 2 × 2 phase shift MIMO-OFDM LED communication systems of employing realize inter-vehicular communication.
Vehicle communicates with fixed access point:
When communicating between vehicle with fixed access point, direct current channel impulse response is as shown in formula (5):
Wherein, v is current vehicle speed.
Vehicle group-net communication:
Communication between vehicle self-organizing network is realized by the mobile relay node interactive information of mobile relay node by vehicle LED communication unit and other self-organizing networks.
Vehicle in vehicle self-organizing network of the present invention comprises three characterising parameter I
i, L
i, D
i.L
irepresent and the coordinate that vehicle is current obtained, also can adopt and position based on LED visible light communication system by vehicle GPS; D
ifor the distance sum between this vehicle in self-organizing network to other vehicles; I
ifor state information (the removing position L of vehicle
i, distance D
ioutside other state informations), as the information such as maximum-norm of the license plate number of vehicle, the speed of a motor vehicle, traveling destination, Current vehicle self-organizing network, wherein, i is subscript, represents vehicle sequence number in ad hoc networks.
LED-based outdoor visible light communication, because the transmitting power of LED limits communication distance, the vehicle need chosen as mobile relay node realizes vehicle self-organizing network communication.To other vehicle distances (calculating beeline as adopted Euclidean distance) the shortest vehicle of sum as mobile relay node in self-organizing network.
Distance sum between this vehicle to other vehicles, is obtained by formula (6) and formula (7).
Wherein, (x
i, y
i) and (x
j, y
j) be the coordinate of vehicle, M is the number of vehicle in current self-organizing network.
Choose D in network
iminimum node is as the mobile relay node in present networks, and each car can only communicate with mobile relay node, to the automobile travelled in the same way, mobile relay node is generally positioned at the centre position of network, be in vehicle below, communicated with its tail-light by headlight, the vehicle be in before mobile relay node is communicated with its headlight by tail-light, therefore can realize double bounce and multi-hop communication by mobile relay node.
Vehicle add self-organizing network and leave self-organizing network all with the distance dependent of vehicle and mobile relay node.LED visible light communication system is limited to inter-vehicular communication distance, certain distance is exceeded between vehicle, communication quality declines and is not suitable for inter-vehicular communication, therefore when vehicle can not meet certain condition in this network, just from then on network exits automatically, joins in another vehicle self-organizing network until satisfy condition.When vehicle leaves from a network, self-organizing network can calculate in real time the beeline of each vehicle, choose have beeline in current self-organizing network vehicle as mobile relay node.And upgrade parameter information and the self information of each vehicle in current self-organizing network; When vehicle leaves a self-organizing network, can join in the middle of another self-organizing network, it must meet some requirements and could allow to add.Mobile relay node first judges whether the distance of this vehicle meets communication condition, not meeting then does not allow it to add network, satisfied then continuation judges in this self-organization network, whether total nodes reaches the upper limit, if do not reach the upper limit, it is then allowed to add, otherwise do not allow it to add network, a vehicle adds the flow chart of vehicle self-organizing network as shown in Figure 5.
When the spacing of two self-organizing network vehicles is apart from each other, can not using and realize based on LED visible light communication, in order to realize wider vehicle communication, between mobile relay node vehicle, having used other modes (as WiFi, bluetooth etc.) realize communication, as shown in Figure 6.By communicating between via node, each vehicle is made to be in " car is at net " state.
Specific embodiment:
Law enfrocement official will trace the vehicle that the number-plate number is 12345, information uploads on the net by law enfrocement official, mobile relay node in vehicle self-organizing network has the state information (comprising license plate number) of all vehicles in present networks, therefore carries out information matches to license plate number.If any the vehicle matching the number-plate number 12345, its position coordinates uploads on the net by via node, and law enfrocement official obtains this coordinate by internet and searches.A kind of technological means is provided for search special car.
What finally illustrate is, above preferred embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.
Claims (10)
1. a vehicle self-organizing network for LED communication, is characterized in that: this vehicle self-organizing network is made up of the node containing vehicle LED communication unit; Described node comprises vehicle termination node, mobile relay node; Described vehicle termination node is communicated with the mobile relay node in self-organizing network by vehicle LED communication unit; Mobile relay node is communicated with the mobile relay node of other self-organizing networks by vehicle LED communication unit.
2. the vehicle self-organizing network of a kind of LED communication according to claim 1, is characterized in that: described vehicle LED communication unit comprises transmitter and receiver and other communications processor elements, and vehicle LED communication unit has duplex communication mode; The LED angle of departure of described vehicle LED communication unit is greater than the angle of visual field of receiver.
3. the vehicle self-organizing network of a kind of LED communication according to claim 2, it is characterized in that: described vehicle LED communication unit is provided with the interface with other devices communicatings, when LED visible light communication can not be realized, communication can be realized by other communication modes interconnected.
4. the vehicle self-organizing network of a kind of LED communication according to claim 2, is characterized in that: described vehicle LED communication unit comprises headlight LED communication unit and tail-light LED communication unit; When vehicle termination node is positioned at before mobile relay node, the tail-light LED communication unit of vehicle termination node communicates with the headlight LED communication unit of mobile relay node; When vehicle termination node is positioned at after mobile relay node, the headlight LED communication unit of vehicle termination node communicates with the tail-light LED communication unit of mobile relay node; Double bounce and multi-hop communication is realized by mobile relay node.
5. the vehicle self-organizing network of a kind of LED communication according to claim 1, is characterized in that: described vehicle self-organizing network also comprises fixed access point, described fixed access point contains the LED communication unit with duplex communication mode; Vehicle termination node is communicated with fixed access point by LED communication unit, and fixed access point can communicate with other networks.
6. the vehicle self-organizing network of a kind of LED communication according to claim 5, is characterized in that: when communicating between vehicle with fixed access point, direct current channel impulse response as shown by the following formula:
Wherein, m is lambert's index, and A is the surface area of receiver, and φ is the angle of departure,
for acceptance angle,
n is index of refraction,
maximum field of view of receiver angle, initial distance is set to d, and v is current vehicle speed.
7. the vehicle self-organizing network of a kind of LED communication according to claim 1, it is characterized in that: described LED communication unit adopts phase shift MIMO-OFDM LED communication system to communicate, data are carried out phase shift T/N time delay and are sent after MIMO-OFDM serioparallel exchange, receiver is sampled with T/N sampling rate, wherein, T is the OFDM symbol cycle, and N is LED communication unit number.
8. the vehicle self-organizing network of a kind of LED communication according to claim 1, it is characterized in that: when described vehicle termination node communicates with mobile relay node, two vehicles travel in the same way, and between two vehicles, direct current channel impulse response is as shown by the following formula:
Wherein, φ is the angle of departure,
for acceptance angle, initial distance is set to d, and vehicle speed is respectively v
1, v
2.
9. the vehicle self-organizing network of a kind of LED communication according to claim 1, is characterized in that: described mobile relay node is the distance sum D in self-organizing network between this vehicle to other vehicles
iminimum vehicle;
wherein,
(x
i, y
i) and (x
j, y
j) be the coordinate of vehicle, M is the number of vehicle in current self-organizing network.
10. the vehicle self-organizing network of a kind of LED communication according to claim 1, it is characterized in that: the mobile relay node in described vehicle termination node and self-organizing network or fixed access point hypertelorism, can not proper communication time, vehicle termination node disconnects and mobile relay node link automatically, and transmit into net request data package, join other self-organizing networks; After adjacent mobile relay node or fixed access point receive the request of networking, first judge whether the distance of this vehicle meets communication condition, not meeting then does not allow it to add network, satisfied then continuation judges in this self-organization network, whether total nodes reaches the upper limit, if do not reach the upper limit, it is then allowed to add, otherwise, do not allow it to add network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510033106.6A CN104539738B (en) | 2015-01-22 | 2015-01-22 | A kind of vehicle self-organizing network of LED communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510033106.6A CN104539738B (en) | 2015-01-22 | 2015-01-22 | A kind of vehicle self-organizing network of LED communication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104539738A true CN104539738A (en) | 2015-04-22 |
| CN104539738B CN104539738B (en) | 2018-04-27 |
Family
ID=52855205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510033106.6A Active CN104539738B (en) | 2015-01-22 | 2015-01-22 | A kind of vehicle self-organizing network of LED communication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104539738B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105786177A (en) * | 2016-01-27 | 2016-07-20 | 中国人民解放军信息工程大学 | Gesture recognition device and method |
| CN105992131A (en) * | 2015-03-19 | 2016-10-05 | 现代自动车株式会社 | Vehicle, communication method, and wireless communication apparatus included therein |
| CN106485947A (en) * | 2015-08-25 | 2017-03-08 | 中兴通讯股份有限公司 | A kind of control method for vehicle, device and car networking system |
| CN106656326A (en) * | 2016-10-27 | 2017-05-10 | 南方科技大学 | Control method and control apparatus for assisting relay selection by use of visible light, and wireless local area network |
| CN108322256A (en) * | 2017-01-16 | 2018-07-24 | 通用汽车环球科技运作有限责任公司 | The communication system based on auto lamp for user equipment |
| CN110087968A (en) * | 2017-05-23 | 2019-08-02 | 株式会社东芝 | Vehicular communication system |
| CN110601758A (en) * | 2019-07-12 | 2019-12-20 | 重庆邮电大学 | Internet of vehicles multi-attribute switching method of visible light communication system |
| WO2020062231A1 (en) * | 2018-09-30 | 2020-04-02 | 深圳市大疆创新科技有限公司 | Information processing method and apparatus, carrier, and storage medium |
| CN111226270A (en) * | 2017-10-20 | 2020-06-02 | 国际商业机器公司 | Transfer of image data captured by an onboard camera |
| CN111711647A (en) * | 2019-03-18 | 2020-09-25 | 矢崎总业株式会社 | Vehicle communication system |
| CN112788565A (en) * | 2021-01-20 | 2021-05-11 | 温州大学 | Vehicle-mounted cooperative communication system and communication method based on VLC + WiFi |
| CN112803999A (en) * | 2020-12-29 | 2021-05-14 | 宝能(广州)汽车研究院有限公司 | Vehicle and communication system thereof |
| US11245469B2 (en) | 2017-07-27 | 2022-02-08 | The Regents Of The University Of Michigan | Line-of-sight optical communication for vehicle-to-vehicle (v2v) and vehicle-to-infrastructure (v2i) mobile communication networks |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2026086A2 (en) * | 2007-07-31 | 2009-02-18 | Kabushiki Kaisha Toshiba | Method and apparatus for determining the position of a moving object, by using visible light communication |
| CN101419069A (en) * | 2008-12-09 | 2009-04-29 | 华东理工大学 | Vehicle distance measurement method based on visible light communication |
| CN101814955A (en) * | 2009-02-23 | 2010-08-25 | 株式会社东芝 | Device used for transmitting and receiving signal in visible light communication system |
| CN102013174A (en) * | 2010-11-18 | 2011-04-13 | 华东理工大学 | Vehicle collision warning system based on optical communication |
| KR101068671B1 (en) * | 2008-06-30 | 2011-09-28 | 경희대학교 산학협력단 | Communication apparatus for vehicles using visible light communication and method thereof, and intelligent transport system using the same |
| CN102546014A (en) * | 2010-12-21 | 2012-07-04 | 郭丰亮 | Wireless network system |
| CN102624452A (en) * | 2011-02-01 | 2012-08-01 | 樱桃树管理顾问有限公司 | Optical signal and relay method, apparatus, system and application of luminous energy transmission |
| CN202677621U (en) * | 2012-03-09 | 2013-01-16 | 郭丰亮 | LED (light emitting diode) visible light intelligent traffic network system |
| CN103475409A (en) * | 2013-09-05 | 2013-12-25 | 江苏大学 | Method and device for switching visible light wireless communication reception of moving vehicles |
| CN103560986A (en) * | 2013-11-08 | 2014-02-05 | 武汉邮电科学研究院 | Visible light communication system based on MIMO-OFDM modulation and channel estimation method |
-
2015
- 2015-01-22 CN CN201510033106.6A patent/CN104539738B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2026086A2 (en) * | 2007-07-31 | 2009-02-18 | Kabushiki Kaisha Toshiba | Method and apparatus for determining the position of a moving object, by using visible light communication |
| KR101068671B1 (en) * | 2008-06-30 | 2011-09-28 | 경희대학교 산학협력단 | Communication apparatus for vehicles using visible light communication and method thereof, and intelligent transport system using the same |
| CN101419069A (en) * | 2008-12-09 | 2009-04-29 | 华东理工大学 | Vehicle distance measurement method based on visible light communication |
| CN101814955A (en) * | 2009-02-23 | 2010-08-25 | 株式会社东芝 | Device used for transmitting and receiving signal in visible light communication system |
| CN102013174A (en) * | 2010-11-18 | 2011-04-13 | 华东理工大学 | Vehicle collision warning system based on optical communication |
| CN102546014A (en) * | 2010-12-21 | 2012-07-04 | 郭丰亮 | Wireless network system |
| CN102624452A (en) * | 2011-02-01 | 2012-08-01 | 樱桃树管理顾问有限公司 | Optical signal and relay method, apparatus, system and application of luminous energy transmission |
| CN202677621U (en) * | 2012-03-09 | 2013-01-16 | 郭丰亮 | LED (light emitting diode) visible light intelligent traffic network system |
| CN103475409A (en) * | 2013-09-05 | 2013-12-25 | 江苏大学 | Method and device for switching visible light wireless communication reception of moving vehicles |
| CN103560986A (en) * | 2013-11-08 | 2014-02-05 | 武汉邮电科学研究院 | Visible light communication system based on MIMO-OFDM modulation and channel estimation method |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105992131B (en) * | 2015-03-19 | 2021-01-26 | 现代自动车株式会社 | Vehicle, communication method of vehicle, and wireless communication device for vehicle |
| CN105992131A (en) * | 2015-03-19 | 2016-10-05 | 现代自动车株式会社 | Vehicle, communication method, and wireless communication apparatus included therein |
| CN106485947A (en) * | 2015-08-25 | 2017-03-08 | 中兴通讯股份有限公司 | A kind of control method for vehicle, device and car networking system |
| CN105786177A (en) * | 2016-01-27 | 2016-07-20 | 中国人民解放军信息工程大学 | Gesture recognition device and method |
| CN106656326A (en) * | 2016-10-27 | 2017-05-10 | 南方科技大学 | Control method and control apparatus for assisting relay selection by use of visible light, and wireless local area network |
| CN106656326B (en) * | 2016-10-27 | 2019-03-29 | 南方科技大学 | Control method, control device and the WLAN of visible light alternative routing selection |
| CN108322256A (en) * | 2017-01-16 | 2018-07-24 | 通用汽车环球科技运作有限责任公司 | The communication system based on auto lamp for user equipment |
| CN110087968A (en) * | 2017-05-23 | 2019-08-02 | 株式会社东芝 | Vehicular communication system |
| US11245469B2 (en) | 2017-07-27 | 2022-02-08 | The Regents Of The University Of Michigan | Line-of-sight optical communication for vehicle-to-vehicle (v2v) and vehicle-to-infrastructure (v2i) mobile communication networks |
| CN111226270B (en) * | 2017-10-20 | 2022-10-11 | 国际商业机器公司 | Transfer of image data captured by an onboard camera |
| CN111226270A (en) * | 2017-10-20 | 2020-06-02 | 国际商业机器公司 | Transfer of image data captured by an onboard camera |
| WO2020062231A1 (en) * | 2018-09-30 | 2020-04-02 | 深圳市大疆创新科技有限公司 | Information processing method and apparatus, carrier, and storage medium |
| CN111711647A (en) * | 2019-03-18 | 2020-09-25 | 矢崎总业株式会社 | Vehicle communication system |
| CN111711647B (en) * | 2019-03-18 | 2023-04-18 | 矢崎总业株式会社 | Vehicle communication system |
| CN110601758A (en) * | 2019-07-12 | 2019-12-20 | 重庆邮电大学 | Internet of vehicles multi-attribute switching method of visible light communication system |
| CN112803999A (en) * | 2020-12-29 | 2021-05-14 | 宝能(广州)汽车研究院有限公司 | Vehicle and communication system thereof |
| CN112788565A (en) * | 2021-01-20 | 2021-05-11 | 温州大学 | Vehicle-mounted cooperative communication system and communication method based on VLC + WiFi |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104539738B (en) | 2018-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104539738A (en) | Vehicle self-organization network for LED communication | |
| Wang et al. | Networking and communications in autonomous driving: A survey | |
| Zhang et al. | Breaking the blockage for big data transmission: Gigabit road communication in autonomous vehicles | |
| CN103781198B (en) | A kind of car networking message propagating method based on 802.11p and LTE/LTE A | |
| CN102625237B (en) | Method for selecting optimum relay in communication between wayside device and vehicle | |
| Masini et al. | Radio access for future 5G vehicular networks | |
| Li et al. | Vehicle-mounted base station for connected and autonomous vehicles: Opportunities and challenges | |
| CN111132075B (en) | Air-ground integrated vehicle networking relay selection method based on state transition probability | |
| CN106210152B (en) | Vehicle-mounted cloud system based on Internet of things and resource acquisition method | |
| CN109005524A (en) | Based on throughput ratio compared with car networking RSU switching method | |
| CN102917372A (en) | Internet of vehicles hierarchical model design method orienting to multi-scene data exchange | |
| Liu et al. | Hybrid visible light communications in intelligent transportation systems with position based services | |
| CN105101086A (en) | Data transmission path selection method based on vehicle density distribution | |
| CN105448115B (en) | Passive cluster inter-vehicular communication method in high-speed transit network | |
| Abid et al. | Pedestrian collision avoidance in vehicular networks | |
| Al-Absi et al. | Performance analysis for city, highway, and rural area in vehicle-to-vehicle network | |
| Yadav et al. | Secure and reliable routing protocols for VANETs | |
| Zeng et al. | A bus-oriented mobile FCNs infrastructure and intra-cluster BSM transmission mechanism | |
| Liang et al. | Distributed information exchange with low latency for decision making in vehicular fog computing | |
| CN106900026B (en) | Method for selecting route backbone path based on network communication | |
| Ishihara et al. | Congestion control algorithms for collective perception in vehicular networks | |
| Chen et al. | Data cooperative distribution mechanism of internet of vehicles using D2D technology | |
| Nakamura et al. | A method for improving data delivery efficiency in delay tolerant vanet with scheduled routes of cars | |
| CN110519682B (en) | V2V routing method combining position and communication range prediction | |
| Li et al. | ASTSMAC: Application suitable time-slot sharing MAC protocol for vehicular ad hoc networks |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |