CN106100732A - A kind of asymmetrical network based on visible light communication transmission system and transmission method - Google Patents
A kind of asymmetrical network based on visible light communication transmission system and transmission method Download PDFInfo
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- CN106100732A CN106100732A CN201610396716.7A CN201610396716A CN106100732A CN 106100732 A CN106100732 A CN 106100732A CN 201610396716 A CN201610396716 A CN 201610396716A CN 106100732 A CN106100732 A CN 106100732A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 59
- 238000004891 communication Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000005641 tunneling Effects 0.000 claims description 37
- 238000012937 correction Methods 0.000 claims description 7
- 238000005286 illumination Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/1143—Bidirectional transmission
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Abstract
The present invention relates to a kind of asymmetrical network based on visible light communication transmission system and transmission method, this system includes upper and lower row network transmission system；Described downstream network transmission system comprises the visible LED being connected by the LED communication controller of downstream network interface access IP network and the LED light receptor connecting user terminal with this controller；Described uplink network transmission system comprises the infrared transmitting tube that the infrared communication controller being connected with described user terminal is connected and the infrared light receptor being accessed IP network by uplink network interface with this infrared communication controller.It uses infrared and LED visible light communication technology to achieve dissymmetric network transmission, takes full advantage of the data asymmetric feature of upstream and downstream bandwidth demand generally existed in communications applications, it can be ensured that two-way communication transmission quality, saves the energy, safe and reliable.
Description
Technical field
Patent of the present invention relates to the network communications technology, in particular to a kind of asymmetric net based on visible light communication
Network transmission system and transmission method.
Background technology
LED, as one of 21st century most important technological invention, is entering into the life of the daily common people.LED illumination
The fast development of technology increasingly causes the concern of communication technology circle, and as lighting source of future generation, LED replacement the most extensively makes
Electric filament lamp and fluorescent lamp becoming irreversible trend.Utilize LED as carrier to realize the transmission of digital signal,
It is capable of illuminating communicating integral, electromagnetic pollution can be avoided, be efficient and the communication pattern of environmental protection.
The network transmission system being mostly based on visible light communication technology at present all uses in uplink and downlink both links
Visible ray mode, there are two problems in do so: mounted LED lamp on first user terminal, the light intensity sent is relatively big, holds
Easily allow user produce and dazzle the eyes sense, affect the experience of terminal；It two is that popular the brought battery of mobile subscriber terminal supplies
Electricity problem, the power consumption of LED can be further exacerbated by the most nervous battery electric power demand.Additionally, LED communication control module
Relatively costly, and there is significant difference, so objectively causing for the demand of bandwidth in actually used middle up-downgoing data
The waste of resource.
In order to solve the problems referred to above, we have proposed LED and transmit system with the infrared visible ray asymmetrical network combined.
This system uses the technical tactic of " descending LED, up infrared ", it will be seen that the superiority bandwidth of light and infrared technology maturation with
And cost advantage organically combines, take full advantage of the data upstream and downstream bandwidth demand generally existed in communications applications not
Symmetrical feature, it is possible to efficiently accomplish the transmitted in both directions of the big little band data such as band data and control instruction such as image, speech,
Guarantee communication transmission quality, and realize simple, save the energy, safe and reliable.
Summary of the invention
It is an object of the invention to provide a kind of asymmetrical network based on visible light communication transmission system and transmission method,
It uses the technical tactic of " descending LED, up infrared ", it can be ensured that the quality of two-way communication transmission, makes full use of as far as possible
The asymmetric feature of up-downgoing data payload, and realize simple, save the energy, safe and reliable.
The present invention provide asymmetrical network based on visible light communication transmission system include downstream network transmission system and
Uplink network transmission system.
Described downstream network transmission system includes:
Visible LED lamp, is used for sending visible light signal and illumination；
LED communication controller, by downstream network interface access IP network, simultaneously by data output interface with described can
See that light LED connects；Receive for network, resolve network packet and generate tunneling data bag, by described visible ray after modulation
LED sends with visible light signal；And
LED light receptor, it is connected by optical channel with described visible LED lamp, by its first network interface even
Connect user terminal；For receiving visible light signal, data demodulate, and resolve tunneling data bag and generate network packet, and network sends
To user terminal.
Described uplink network transmission system includes:
Infrared transmitting tube, is used for sending infrared signal；
Infrared communication controller, is connected with described user terminal by its second network interface (or other data-interfaces)
Connect, be connected with described infrared transmitting tube by its data-interface simultaneously；For receiving the net to be passed from described user terminal
Network data, are resolved network packet and generate tunneling data bag, sent with infrared signal by described infrared transmitting tube after modulation；
And
Infrared light receptor, it is connected by infrared channel with described infrared transmitting tube, is connect by uplink network simultaneously
Mouth accesses IP network；For receiving infrared signal, data demodulate, and resolve tunneling data bag and generate network packet, on network
Pass to IP network.
Present invention asymmetrical network based on visible light communication transmission method includes upper and lower network transfer method two parts.
The downstream network transmission method realized by above-mentioned downstream network transmission system, is comprised the steps:
LED communication controller by downstream network interface from IP network receiving network data, after network packet is disassembled
Obtain data payload, then regenerate tunneling data bag, sent with visible light signal by visible LED lamp after being modulated；
After LED light receptor receives visible light signal, demodulation, resolve tunneling data bag and recover data payload, again
Being packaged as ordinary network data bag and send via its first network interface, user terminal receives process by common network and obtains
Fetch data.
In described downstream network transmission, use the coded system that error correction is two-in-one with anti-flicker, to improve transmission error code
The flicker of LED and can be eliminated.
The uplink network transmission method realized by above-mentioned uplink network transmission system, is comprised the steps:
User terminal sends network data, and infrared communication controller receives net to be passed by its second network interface
Network data, obtain data payload after network packet being disassembled, then repack as tunneling data bag, pass through after being modulated
Infrared tube sends with infrared signal；
Infrared remote receiver demodulates after receiving infrared signal and terminates tunnel transmission, recovers data payload, again beats
Bag for ordinary network data bag and sends via uplink network interface, and user terminal receives Procedure Acquisition number by common network
According to.
A kind of uplink network transmission system, including:
User terminal；
Infrared transmitting tube, is used for sending infrared signal；
Infrared communication controller, is connected with described user terminal by its second network interface (or other data-interfaces),
It is connected with described infrared transmitting tube by its data-interface simultaneously；For receiving the network number to be passed from described user terminal
According to, resolve network packet and generate tunneling data bag, sent with infrared signal by described infrared transmitting tube after modulation；And
Infrared light receptor, it is connected by infrared channel with described infrared transmitting tube 32, passes through uplink network simultaneously
Interface accesses IP network；For receiving infrared signal, data demodulate, and resolve tunneling data bag and generate network packet, upload
To IP network.
In present system, the connected mode of user terminal and LED light receptor and infrared communication controller include but
It is not limited to network connect.If it is true that user terminal can carry out one with LED light receptor and infrared communication controller
Change design, being allowed to include LED light and receive and infrared emission function, then network need not being used, as long as using ordinary internal data
Connect.This kind of design still belongs to the covering scope of the carried system of the application.
The carried system of the present invention emphasizes that the purpose that network connects is to make existing network user need not make self software and hardware
Any change, only need to plug into and possess LED light reception and the hardware plug module of infrared emissing ability or depressed place, can realize two-way
Dissymmetric network is transmitted.
The present invention program network uplink and downlink (relative to user terminal) is respectively adopted infrared and LED visible light communication technology
Achieve dissymmetric network transmission, take full advantage of the data upstream and downstream bandwidth demand generally existed in communications applications asymmetric
Feature, it is ensured that two-way communication transmission quality, saves the energy, safe and reliable.
In native system, tunneling technique is used to complete the bidirectional information transmission of optical channel, either visible light channel or red
Outer channel, is all transparent for network transmits.User need not understand the physical channel experienced in data transmission procedure
Detail.System uses tunneling technique to complete the conversion of network packet automatically.Therefore, user is without to network self
Framework and network software make any adjustment.The carried system of the application need only be used to substitute common wired letter at transmission link
Road, can complete network design.
Its downstream network transmission uses the coded system that error correction is two-in-one with anti-flicker, is improving transmission error code performance
Eliminate the flicker of LED simultaneously, improve user's experience.
Accompanying drawing explanation
Fig. 1 is downstream network transmission system block diagram based on LED and tunneling technique；
Fig. 2 is downstream network transmission software flow pattern based on LED and tunneling technique；
Fig. 3 is the uplink network transmission system block diagram based on infrared and tunneling technique；
Fig. 4 is based on infrared and tunneling technique uplink network transmitting software flow chart.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and embodiment,
The present invention is described in more detail.Should understand, specific embodiment described herein is only used for explaining the present invention, and need not
In limiting the present invention.
Seeing Fig. 1, downstream network transmission system based on LED and tunneling technique comprises following hardware components:
Visible LED lamp 12, sends equipment as network visible light signal, possesses illumination, visible ray sending function.
LED communication controller 11, accesses IP network by downstream network interface, simultaneously by data output interface with described
Visible LED lamp 12 connects；Receiving for network, network data Packet analyzing, tunneling data bag generates, and signal is modulated, and signal is sent out
Send.
LED light receptor 13, is connected by optical channel with described visible LED lamp 12, by its first network interface
Connect user terminal；For receiving visible light signal, data demodulate, and resolve tunneling data bag and generate network packet, and network is sent out
Send, this user terminal receive.
Seeing Fig. 2, downstream network transmission process step based on LED and tunneling technique is as follows:
Step S201, LED communication controller 11 receives data by downstream network interface from public ip network, according to
The destination address of network packet decides whether to proceed to next step operation；
Step S202, network packet is disassembled by LED communication controller, obtains data load and destination address etc.
Key message；
Step S203, data load to be sent and destination address etc. are repacked by LED communication controller, form tunnel
Track data bag；
Step S204, LED communication controller wraps increase error correction and the two-in-one coding of anti-flicker at tunneling data；
Step S205, LED communication controller is converted into analog waveform after digital information being modulated, and and then by visible
Light LED 12 sends with visible light signal；
Step S206, LED light receptor connects 13 reception visible light signals, and completes demodulation and digitized；
Step S207, LED light receptor completes error correction and the two-in-one decoding of anti-flicker of signal；
Step S208, tunneling data bag is disassembled by LED light receptor, obtains data load and destination address；
Step S209, LED light receptor utilizes destination address data load to be sent to be repacked, and forms standard
Network packet；
Step S210, network packet is sent to user terminal by LED light receptor via its first network interface, user
Terminal is received by common network and obtains data.
Seeing Fig. 3, uplink network transmission system based on infrared and tunneling technique includes following hardware components:
Infrared transmitting tube 32, as network infra red light signal transmitting.
Infrared communication controller 31, by its second network interface (or other data-interfaces) and described user terminal phase
Connect, be connected with described infrared transmitting tube 32 by data-interface simultaneously.Possesses function: network receives, network packet solution
Analysis, tunneling data bag generates, and signal is modulated, and signal sends.
Infrared light receptor 33, is connected by infrared channel with infrared transmitting tube 32, simultaneously by uplink network interface
Access outside public ip network.Possessing function: infrared receiver, data demodulate, tunneling data Packet analyzing, and network packet generates,
Network sends.
Fig. 4 is that step is as follows based on infrared and tunneling technique uplink network transmitting software flow process:
Step S401, infrared communication controller 31 is received from user terminal by the second network interface or data-interface
Network data；
Step S402, network packet is disassembled by infrared communication controller, obtains data load and destination address
Deng key message；
Step S403, data load to be sent and destination address etc. are repacked by infrared communication controller, are formed
Tunneling data bag；
Step S404, infrared communication controller wraps increase Error Correction of Coding at tunneling data；
Step S405, infrared communication controller is converted into analog waveform after digital information being modulated, and and then by red
Emission pipe 32 completes to send；
Step S406, infrared remote receiver 33 receives infrared signal, and completes demodulation and digitized；
Step S407, infrared remote receiver completes the error correction decoding of signal；
Step S408, tunneling data bag is disassembled by infrared remote receiver, obtains data load and destination address；
Step S409, infrared remote receiver utilizes destination address data load to be sent to be repacked, and forms standard
Network packet；
Step S410, network packet is sent to IP network by infrared remote receiver by uplink network interface.
Claims (4)
1. an asymmetrical network based on visible light communication transmission system, it is characterised in that include downstream network transmission system and
Uplink network transmission system；
Described downstream network transmission system includes:
Visible LED lamp, is used for sending visible light signal and illumination；
LED communication controller, accesses IP network by downstream network interface, simultaneously by data output interface and described visible ray
LED connects；Receive for network, resolve network packet and generate tunneling data bag, by described visible LED lamp after modulation
Send with visible light signal；And
LED light receptor, it is connected by optical channel with described visible LED lamp, is connected by its first network interface and uses
Family terminal；For receiving visible light signal, data demodulate, and resolve tunneling data bag and generate network packet, and network is sent to use
Family terminal；
Described uplink network transmission system includes:
Infrared transmitting tube, is used for sending infrared signal；
Infrared communication controller, is connected with described user terminal by its second network interface, simultaneously by its data-interface
It is connected with described infrared transmitting tube；For receiving the network data to be passed from described user terminal, resolve network packet
Generate tunneling data bag, sent with infrared signal by described infrared transmitting tube after modulation；And
Infrared light receptor, it is connected by infrared channel with described infrared transmitting tube, is connect by uplink network interface simultaneously
Enter IP network；For receiving infrared signal, data demodulate, and resolve tunneling data bag and generate network packet, and network uploads to
IP network.
2. asymmetrical network transmission method based on visible light communication, it is characterised in that including:
1), downstream network transmission method, step is as follows:
LED communication controller, is obtained after network packet being disassembled from IP network receiving network data by downstream network interface
Data payload, then regenerates tunneling data bag, is sent with visible light signal by visible LED lamp after being modulated；
After LED light receptor receives visible light signal, demodulation, resolve tunneling data bag and recover data payload, repack
Send for ordinary network data bag and via its first network interface, user terminal receive Procedure Acquisition by common network
Data；
2), uplink network transmission method, step is as follows:
Described user terminal sends network data, and infrared controller receives network number to be passed by its second network interface
According to, obtain data payload after network packet being disassembled, then repack as tunneling data bag, after being modulated, pass through infrared tube
Send with infrared signal；
Infrared remote receiver demodulates after receiving infrared signal and terminates tunnel transmission, recovers data payload, repack into
Ordinary network data bag also sends via uplink network interface, and user terminal receives Procedure Acquisition data by common network.
3. transmission method as claimed in claim 2, it is characterised in that in described downstream network transmission, use error correction and anti-sudden strain of a muscle
Bright two-in-one coded system, to improve transmission error code performance and to eliminate the flicker of LED.
4. a uplink network transmission system, it is characterised in that including:
User terminal；
Infrared transmitting tube, is used for sending infrared signal；
Infrared communication controller, is connected with described user terminal by its second network interface, simultaneously by its data-interface with
Described infrared transmitting tube connects；For receiving the network data to be passed from described user terminal, resolve network packet raw
Become tunneling data bag, sent with infrared signal by described infrared transmitting tube after modulation；And
Infrared light receptor, it is connected by infrared channel with described infrared transmitting tube, is connect by uplink network interface simultaneously
Enter IP network；For receiving infrared signal, data demodulate, and resolve tunneling data bag and generate network packet, upload to IP network
Network.
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| CN110113099A (en) * | 2019-04-09 | 2019-08-09 | 南昌大学 | A kind of visible light multi-medium data download apparatus and method |
| CN110974169A (en) * | 2019-12-13 | 2020-04-10 | 泉州装备制造研究所 | Wearable smart medical system based on wireless optical sensor network technology |
| CN112019269A (en) * | 2020-09-09 | 2020-12-01 | 东莞信大融合创新研究院 | Data transmission and control method based on visible light communication |
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