CN102868448A - Visible light communication data transmission method and device, and visible light communication data receiving method and device - Google Patents
Visible light communication data transmission method and device, and visible light communication data receiving method and device Download PDFInfo
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- CN102868448A CN102868448A CN2012103055153A CN201210305515A CN102868448A CN 102868448 A CN102868448 A CN 102868448A CN 2012103055153 A CN2012103055153 A CN 2012103055153A CN 201210305515 A CN201210305515 A CN 201210305515A CN 102868448 A CN102868448 A CN 102868448A
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Abstract
The invention provides a visible light communication data transmission method, a visible light communication data transmission device, a visible light communication data receiving method and a visible light communication data receiving device. The transmission method comprises the following steps of: distributing all data of each data stream to be transmitted to a plurality of emitting light sources, wherein a plurality of emitting light sources are arranged in the same plane in a matrix form; and at the same time, transmitting all data by using light signals which are simultaneously emitted by a plurality of emitting light sources. By the invention, the technical problem that a multi-input multi-output visible light communication transmission scheme cannot be accomplished in related technologies is solved, so the same data stream can be simultaneously transmitted by a plurality of emitting light sources, and the data throughput of a system is greatly improved.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of transfer of data, method of reseptance and device of visible light communication.
Background technology
The wireless communication technology of use visible light receives the concern of academia and industrial circle in recent years.Especially, along with light-emitting diode (Light Emitting Diode, referred to as LED) and so on the lighting apparatus of light-emitting component promptly be used widely, utilize semiconductor LED when realizing illumination, realize that the feasibility study that cordless communication network covers just carries out at many relevant enterprises, visible light communication is also explored with the suitable pathways that radio sensing network, WLAN (WLAN (wireless local area network)) and electric line communication system combine.Can confirm that this communication mode will be one of following optional short distance ultra-wideband communications mode.
As the luminous component that is used for the high-speed light data communication, consider the impact on human body or medicine equipment, LED is the most strong candidate.Simultaneously, have the semiconductor light-emitting equipment of the response performance of more speed, be proposed as the candidate such as laser diode (Laser Diode is referred to as LD) or super-radiance light emitting diode (Super Luminescent Diode is referred to as SLED).Data rate in optical communication depends on the response speed of luminaire.Owing to this reason, this luminaire with response performance of more speed receives publicity.
The basic principle that realizes visible LED communication is to transmit data to carry out certain modulation to institute is luminous, such as pulse width modulation (Pulse Width Modulation, referred to as PWM), pulse position modulation (Pulse Position Modulation, referred to as PPM), perhaps pulse amplitude modulation (Pulse Amplitude Modulation is referred to as PAM).The light energy of this modulation receives by the space channel transmission and by the photodetector on the destination apparatus (transducer), and photodetector demodulates the data that send again through subsequent treatment after light signal is converted to the signal of telecommunication.Can be the common portable equipment that is attached with in design this function, such as mobile phone, digital camera, notebook computer etc.
Application scenarios and characteristics according to following visible light, multiple-input and multiple-output (Multiple Input Multiple Output, referred to as MIMO) might become the mainstream applications mode of each occasion, the various portable equipments that have been equipped with camera also can get more and more simultaneously.Utilize various visible light sources as information issuing system, various portable/portable terminal is as receiving system, is a kind of easy communication mode.The formation of similar WLAN (wireless local area network), and portable terminal device consists of the node in the network, that is to say that the visible light communication technology can be used as the Floor layer Technology of local area network technology or Access Network application.But, there is no at present the transmission plan of the visible light communication of realizing multiple-input and multiple-output.
For the problems referred to above in the correlation technique, effective solution is proposed not yet at present.
Summary of the invention
In correlation technique, there is no the technical problems such as transmission plan of the visible light communication of realizing multiple-input and multiple-output, the invention provides a kind of transfer of data, method of reseptance and device of visible light communication, to address the above problem at least.
According to an aspect of the present invention, a kind of data transmission method of visible light communication is provided, has comprised: for each data to be transmitted stream, with each data allocations of data to be transmitted stream to a plurality of transmitting illuminants, wherein, a plurality of transmitting illuminants are in same plane and be matrix form and arrange; At synchronization, each data of optical signal transmission of utilizing a plurality of transmitting illuminants to launch simultaneously.
Utilize before each data of optical signal transmission that a plurality of transmitting illuminants launch simultaneously, also comprise: at receiving terminal the designated light source in a plurality of transmitting illuminants is carried out pre-determined bit, wherein, pre-determined bit is used for making the light signal of receiving terminal identification designated light source emission.
At receiving terminal the designated light source in a plurality of transmitting illuminants is carried out pre-determined bit, comprising: open simultaneously each designated light source, and record the position of each designated light source at receiving terminal.
A plurality of transmitting illuminants are the transmitting illuminant that works alone.
According to another aspect of the present invention, a kind of data receive method of visible light communication is provided, comprise: receiving device receives each data come from the optical signal transmission that a plurality of transmitting illuminants send simultaneously, wherein, each data are the data that same data to be transmitted flow point is assigned to a plurality of transmitting illuminants, and a plurality of transmitting illuminants are in same plane and be matrix form and arrange; Receiving device is resolved each data that receive.
Above-mentioned receiving device is one.
According to a further aspect of the invention, a kind of data transmission device of visible light communication is provided, has comprised: distribution module, each data allocations that is used for each data to be transmitted is flowed is to a plurality of transmitting illuminants, wherein, a plurality of transmitting illuminants are in same plane and be matrix form and arrange; Transport module is used at synchronization each data of optical signal transmission of utilizing a plurality of transmitting illuminants to launch simultaneously.
Said apparatus also comprises: locating module, be used at receiving terminal the designated light source of a plurality of transmitting illuminants being carried out pre-determined bit, and wherein, pre-determined bit is used for making the light signal of receiving terminal identification designated light source emission.
Above-mentioned locating module comprises: open the unit, be used for opening simultaneously each designated light source; Record cell is used in position that receiving terminal records each designated light source.
According to a further aspect of the invention, a kind of data sink of visible light communication is provided, comprise: receiver module, be used for to receive each data that come from the optical signal transmission that a plurality of transmitting illuminants send simultaneously, wherein, each data are the data that same data to be transmitted flow point is assigned to a plurality of transmitting illuminants, and a plurality of transmitting illuminants are in same plane and be matrix form and arrange; Parsing module is used for resolving each data that receive
By the present invention, employing with each data allocations of a data flow to a plurality of transmitting illuminants, and transmit simultaneously the technical scheme of above-mentioned each data at a plurality of transmitting illuminants, the technical problems such as transmission plan that there is no the visible light communication of realizing multiple-input and multiple-output in the correlation technique have been solved, thereby realized that a plurality of transmitting illuminants transmit same data flow simultaneously, have promoted the data throughout of system greatly.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the data transmission method of the visible light communication of the embodiment of the invention 1;
Fig. 2 is the structured flowchart according to the data transmission device of the visible light communication of the embodiment of the invention 1;
Fig. 3 is another structured flowchart according to the data transmission device of the visible light communication of the embodiment of the invention 1;
Fig. 4 is the flow chart according to the data receive method of the visible light communication of the embodiment of the invention 2;
Fig. 5 is the structured flowchart according to the data sink of the visible light communication of the embodiment of the invention 2;
The light source putting position schematic diagram of Fig. 6 for arranging according to the matrix of the embodiment of the invention 3;
Fig. 7 is for according to the time chart that shines upon between the data flow of the embodiment of the invention 3 and n the light source point;
Fig. 8 is the structural representation according to the visible light communication transmission system of the embodiment of the invention 3.
Embodiment
Hereinafter also describe in conjunction with the embodiments the present invention in detail with reference to accompanying drawing.Need to prove, in the situation that do not conflict, embodiment and the feature among the embodiment among the application can make up mutually.
Consider in the correlation technique, there is no at present the transmission plan of the visible light communication of realizing multiple-input and multiple-output and the technical problem such as the visible light communication transmission rate that causes is low, provide relevant solution below in conjunction with embodiment, the existing detailed description in detail.
Fig. 1 is the flow chart according to the data transmission method of the visible light communication of the embodiment of the invention 1.As shown in Figure 1, the method comprises:
Step S102, for each data to be transmitted stream, to a plurality of transmitting illuminants, wherein, a plurality of transmitting illuminants are in same plane and be matrix form and arrange with each data allocations of data to be transmitted stream;
Step S104, at synchronization, above-mentioned each data of the optical signal transmission of utilizing a plurality of transmitting illuminants to launch simultaneously.
Above-mentioned treatment step, since adopted by with each data allocations of a data flow to a plurality of transmitting illuminants, and transmit simultaneously the technical scheme of above-mentioned each data at a plurality of transmitting illuminants, promoted data throughout, and then improved message transmission rate, simultaneously, because transmitting illuminant adopts matrix form to arrange, make things convenient for receiving terminal (camera) location, receive demodulation.
In the present embodiment, because transmitting illuminant is a plurality of, therefore need to effectively distinguish at receiving terminal the data of each transmitting illuminant transmission, based on this, before step S104, before each data that the optical signal transmission of namely utilizing a plurality of transmitting illuminants to launch is simultaneously distributed, also need to carry out pre-determined bit to the designated light source in a plurality of transmitting illuminants at receiving terminal, wherein, pre-determined bit is used for making the light signal of receiving terminal identification designated light source emission.
In the present embodiment, the process of above-mentioned pre-determined bit can adopt following form to realize: open simultaneously each above-mentioned designated light source, and the position of recording each above-mentioned designated light source at receiving terminal.
In order further to improve data throughout, the transmitting illuminant that above-mentioned each transmitting illuminant can be set to work alone.
Above-described embodiment in the specific implementation, can show as following form: a plurality of visible light sources are carried out matrix form arrangement placement in the plane, each light source works alone, the data of a data flow are mapped on each light source successively, each is n signal of n light source transmission constantly, n is total number of light sources, is the I row products capable with J, and n is the natural number greater than 1.
A kind of data transmission device of visible light communication also is provided in the present embodiment, has been used for realizing above-described embodiment and preferred implementation, carried out repeating no more of explanation, the below describes the module that relates in this device.As used below, the combination of software and/or the hardware of predetermined function can be realized in term " module ".Although the described device of following examples is preferably realized with software, hardware, perhaps the realization of the combination of software and hardware also may and be conceived.Fig. 2 is the structured flowchart according to the data transmission device of the visible light communication of the embodiment of the invention 1.As shown in Figure 2, this device comprises:
Function by above-mentioned each processing module realizes can promote data throughout equally, and then improves the message transmission rate of visible light communication, simultaneously, because transmitting illuminant adopts matrix form to arrange, makes things convenient for receiving terminal (camera) location, receives demodulation.
In the present embodiment, embodiment is corresponding with said method, as shown in Figure 3, said apparatus also comprises: locating module 24, be connected to transport module 22, be used at receiving terminal the designated light source of a plurality of transmitting illuminants being carried out pre-determined bit, wherein, this pre-determined bit is used for making the light signal of receiving terminal identification designated light source emission.
In the present embodiment, as shown in Figure 3, above-mentioned locating module can comprise following processing unit: open unit 240, be connected to record cell 242, be used for opening simultaneously each designated light source; Record cell 242 is used in position that receiving terminal records each designated light source.
The present embodiment is corresponding with embodiment 1, and emphasis is distolateral, specific as follows in reception:
Fig. 4 is the flow chart according to the data receive method of the visible light communication of the embodiment of the invention 2.As shown in Figure 4, the method comprises:
Step S402, receiving device receives each data come from the optical signal transmission that a plurality of transmitting illuminants send simultaneously, wherein, each data are the data that same data to be transmitted flow point is assigned to a plurality of transmitting illuminants, and a plurality of transmitting illuminants are in same plane and be matrix form and arrange;
Step S404, receiving device is resolved above-mentioned each data that receive.
Corresponding with the scheme among the embodiment 1, by above-mentioned treatment step, can promote data throughout equally, and then the message transmission rate of raising visible light communication, simultaneously, because transmitting illuminant adopts matrix form to arrange, make things convenient for receiving terminal (camera) location, receive demodulation.
In the present embodiment, above-mentioned receiving device is one, can effectively save system cost like this.
In the present embodiment, also provide a kind of data sink of visible light communication, this device is used for the realization said method, and as shown in Figure 5, this device comprises:
In order to understand better above-described embodiment 1 and embodiment 2, describe in detail below in conjunction with embodiment 3.
Embodiment 3
The principle of the present embodiment is: a plurality of VISIBLE LIGHT EMISSION light sources are used for carrying out the electric light conversion as the transmitter unit of light signal emission system.Visible light source is placed in the same plane, and visible light source carries out in the plane matrix form to be arranged and place, putting position as shown in Figure 6, total I row and capable altogether n the light source of J, wherein n is the capable products of I row and J, I and J are natural number.Each light source can be independent, also can be the luminous point that can independently open in the luminescent panel.Spacing between the luminous point need to satisfy the needs of receiver side identification.A plurality of light sources like this work alone, and data throughout are increased to n times of single emitting source, have greatly promoted data rate.
The purpose of the present embodiment is, the visible light communication transmission plan of the multi-emitting light source that a kind of matrix form arranges is provided, and for achieving the above object, the technical scheme that the present embodiment adopts is as follows:
As shown in Figure 7, single distribution of flows is during to a plurality of arbitrary source, and each constantly can transmit n bit byte n arbitrary source, and n the interior mapping of light source sequentially can be with any regularly arranged.Shown in Figure 7 is exactly the relation of changing between data and the transmitting time.
In the present embodiment, only use a visible light to receive original paper as the receiving element of light signal receiving system, be used for carrying out opto-electronic conversion.Receiving original paper at first needs to carry out pre-determined bit, and before communication, a plurality of light sources that matrix is arranged are opened (or the part specific light source is opened) simultaneously, and receiving terminal carries out each light source position record, finishes pre-determined bit.When communicating each constantly each transmitting illuminant (or designated light source) all open, adjudicate each light source according to the bright-dark degree of the position of each transmitting illuminant and whether open, thereby obtain the corresponding transmission information of each light source, finish communication.
As shown in Figure 8, the visible light communication transmission system of the present embodiment comprises:
Information source module 800: flow for generation of data to be transmitted.
Coding module 802: for data stream being encoded and exporting modulation module 804 to.
Modulation module 804: be used for data stream is modulated, and export mapping block 806 to.
Mapping block 806: n the luminous point that is used for every n data message is mapped to according to mapping ruler corresponding respectively n light source or luminescent panel correspondence.N light source works alone simultaneously like this, and the throughput of transmitting data stream is not for carrying out the multiplexing n of multiple-input, multiple-output doubly.Cost is n the luminous point that needs n light source or luminescent panel.
Light drive circuit module 808: the signal of the n after the mapping drives by light drive circuit module 808 respectively simultaneously, exports respectively n corresponding photo-emission source module 810 to.
Photo-emission source module 810: be used for the signal of telecommunication is converted to light signal, finish the function of electric light conversion, send.
Light-receiving original paper module 812: be used for light signal is converted to the signal of telecommunication, finish the function of opto-electronic conversion.Only has a light-receiving original paper module in the present embodiment.
Filtering shaping circuit module 814: the signal of telecommunication that receives is carried out filtering, extract useful signal, remove the noise light source, export location and judging module 816 to.
Location and judging module 816: at first carry out pre-determined bit, in the communication process light source that receives is analyzed, for the judgement whether each location point is all independently opened, demodulate the corresponding data of each location point.
Demodulation module 818: be the contrary module of modulation module, be used for the data flow that receives is carried out demodulation.
Decoder module 820: be the contrary module of coding module, be used for the decoding data to receiving.
Stay of two nights module 822: data flow is finished reception.
Can find out by above-described embodiment, based on the scheme in the above embodiment of the present invention, a plurality of visible light sources are carried out matrix form arrangement placement in the plane, each light source works alone, the data of a data flow are mapped on each light source successively, each is n signal of n light source transmission constantly, and n is total number of light sources, is the I row products capable with J.Like this throughput hoisting be single source n doubly, improved message transmission rate
In another embodiment, also provide a kind of software, this software be used for to be carried out the technical scheme that above-described embodiment and preferred implementation are described.
In another embodiment, also provide a kind of storage medium, stored above-mentioned software in this storage medium, this storage medium includes but not limited to: CD, floppy disk, hard disk, scratch pad memory etc.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and be carried out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
Be the preferred embodiments of the present invention only below, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the data transmission method of a visible light communication is characterized in that, comprising:
For each data to be transmitted stream, to a plurality of transmitting illuminants, wherein, described a plurality of transmitting illuminants are in same plane and be matrix form and arrange with each data allocations of described data to be transmitted stream;
At synchronization, described each data of the optical signal transmission of utilizing described a plurality of transmitting illuminant to launch simultaneously.
2. method according to claim 1 is characterized in that, before described each data of the optical signal transmission of utilizing described a plurality of transmitting illuminant to launch simultaneously, also comprises:
At receiving terminal the designated light source in described a plurality of transmitting illuminants is carried out pre-determined bit, wherein, described pre-determined bit is used for making receiving terminal to identify the light signal of described designated light source emission.
3. method according to claim 2 is characterized in that, at receiving terminal the designated light source in described a plurality of transmitting illuminants is carried out pre-determined bit, comprising:
Open simultaneously each described designated light source, and the position of recording each described designated light source at receiving terminal.
4. according to claim 1 to 3 each described methods, it is characterized in that, described a plurality of transmitting illuminants are the transmitting illuminant that works alone.
5. the data receive method of a visible light communication is characterized in that, comprising:
Receiving device receives each data come from the optical signal transmission that a plurality of transmitting illuminants send simultaneously, wherein, described each data are the data that same data to be transmitted flow point is assigned to described a plurality of transmitting illuminants, and described a plurality of transmitting illuminants are in same plane and be matrix form and arrange;
Described receiving device is resolved described each data that receive.
6. method according to claim 5 is characterized in that, described receiving device is one.
7. the data transmission device of a visible light communication is characterized in that, comprising:
Distribution module is used for each data allocations with each data to be transmitted stream to a plurality of transmitting illuminants, and wherein, described a plurality of transmitting illuminants are in same plane and be matrix form and arrange;
Transport module is used at synchronization described each data of the optical signal transmission of utilizing described a plurality of transmitting illuminant to launch simultaneously.
8. device according to claim 7 is characterized in that, also comprises:
Locating module is used at receiving terminal the designated light source of described a plurality of transmitting illuminants being carried out pre-determined bit, and wherein, described pre-determined bit is used for making receiving terminal to identify the light signal of described designated light source emission.
9. device according to claim 8 is characterized in that, described locating module comprises:
Open the unit, be used for opening simultaneously each described designated light source;
Record cell is used in position that receiving terminal records each described designated light source.
10. the data sink of a visible light communication is characterized in that, comprising:
Receiver module, be used for to receive each data that come from the optical signal transmission that a plurality of transmitting illuminants send simultaneously, wherein, described each data are the data that same data to be transmitted flow point is assigned to described a plurality of transmitting illuminants, and described a plurality of transmitting illuminants are in same plane and be matrix form and arrange;
Parsing module is used for resolving described each data that receive.
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| WO2013174308A1 (en) * | 2012-12-10 | 2013-11-28 | 中兴通讯股份有限公司 | Data sending and receiving method and device and transmission system for visible light communications |
| CN104156179A (en) * | 2014-08-13 | 2014-11-19 | 福建星网视易信息系统有限公司 | Device and method for visible light communication |
| CN105471503A (en) * | 2015-12-21 | 2016-04-06 | 桂林理工大学 | Visible illuminance pre-equalization communication channel encoding/decoding method |
| CN105515657A (en) * | 2015-11-19 | 2016-04-20 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Visible camera communication system employing LED lamp MIMO array configuration |
| CN107819521A (en) * | 2017-11-03 | 2018-03-20 | 广州通导信息技术服务有限公司 | Can auxiliary positioning be highly sensitive and the visible laser equipment of jamproof multi-to-multi communication |
| CN109361457A (en) * | 2018-11-08 | 2019-02-19 | 京东方科技集团股份有限公司 | Signal receiving/transmission device and implementation method based on visible light communication, system |
| CN110365410A (en) * | 2019-08-07 | 2019-10-22 | Oppo（重庆）智能科技有限公司 | Data transmission method and device based on visible light communication, system |
| CN111866411A (en) * | 2019-04-30 | 2020-10-30 | 上海诺基亚贝尔股份有限公司 | Content display device, method, apparatus, and computer-readable storage medium |
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| WO2013174308A1 (en) * | 2012-12-10 | 2013-11-28 | 中兴通讯股份有限公司 | Data sending and receiving method and device and transmission system for visible light communications |
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| CN105515657A (en) * | 2015-11-19 | 2016-04-20 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Visible camera communication system employing LED lamp MIMO array configuration |
| CN105515657B (en) * | 2015-11-19 | 2018-01-02 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | A kind of visible light camera communication system using LED lamp MIMO array framework |
| CN105471503A (en) * | 2015-12-21 | 2016-04-06 | 桂林理工大学 | Visible illuminance pre-equalization communication channel encoding/decoding method |
| CN107819521A (en) * | 2017-11-03 | 2018-03-20 | 广州通导信息技术服务有限公司 | Can auxiliary positioning be highly sensitive and the visible laser equipment of jamproof multi-to-multi communication |
| CN109361457A (en) * | 2018-11-08 | 2019-02-19 | 京东方科技集团股份有限公司 | Signal receiving/transmission device and implementation method based on visible light communication, system |
| US10659158B1 (en) | 2018-11-08 | 2020-05-19 | Beijing Boe Technology Development Co., Ltd. | Signal transmitting and receiving devices, method and system based on visible light communication |
| CN111866411A (en) * | 2019-04-30 | 2020-10-30 | 上海诺基亚贝尔股份有限公司 | Content display device, method, apparatus, and computer-readable storage medium |
| CN110365410A (en) * | 2019-08-07 | 2019-10-22 | Oppo（重庆）智能科技有限公司 | Data transmission method and device based on visible light communication, system |
| CN110365410B (en) * | 2019-08-07 | 2021-06-08 | Oppo（重庆）智能科技有限公司 | Data transmission method, device and system based on visible light communication |
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Application publication date: 20130109 |