CN103812560A - Hybrid communication system based on visible lights and radio frequency - Google Patents
Hybrid communication system based on visible lights and radio frequency Download PDFInfo
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- CN103812560A CN103812560A CN201410063498.6A CN201410063498A CN103812560A CN 103812560 A CN103812560 A CN 103812560A CN 201410063498 A CN201410063498 A CN 201410063498A CN 103812560 A CN103812560 A CN 103812560A
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Abstract
The invention relates to a hybrid communication system based on visible lights and radio frequency, which system implements communication of the Internet with a local area network by using the visible lights and the radio frequency as a carrier. The hybrid communication system comprises an Internet interface, a router, an LED illumination lamp, a visible light receiving end, a radio frequency receiving end, a radio frequency transmitting end and a controller, wherein the controller is used for downloading data by the visible light receiving end or the radio frequency receiving end when a downlink is switched. The hybrid communication system disclosed by the invention solves the problems of downlink visible lights in sight and an uplink light source in the angle of view, is capable of effectively providing reliable and seamless communication service for user terminals even in a mobile condition.
Description
Technical field
The present invention relates to the technical field of wireless telecommunications, more particularly, the present invention relates to a kind of mixed type communication system based on visible ray and radio frequency line.
Background technology
In recent years, along with increasing of wireless device, frequency resource becomes epitonos, extension frequency resource important in inhibiting, and the optical communication technique in visible-range also more and more receives publicity for this reason, becomes the new study hotspot in the communications field.Especially, along with the lighting apparatus that uses light-emitting component such as LED (light-emitting diode) is promptly used widely, carry out for by utilizing infrastructure such as inner/outer lighting apparatus to realize the exploitation of the technology of the data communication of the more speed with high convenience.Visible ray communication (VLC) is the wireless communication technology that uses the light in visible wavelength band to communicate, and it is the replacement to the communication plan based on radio frequency line and supplements, and VLC system of the prior art generally includes LED light source and mobile terminal.The color of LED light source and luminous intensity can be controlled and be reconciled, to make illuminating lamp that illumination functions is provided and to send by use visible ray the data that receive from access point.Mobile terminal comprises for the VLC transceiver with LED light source executing data sending and receiving.Access point is connected with LED light source, to provide data, services via LED light source to user.The frequency band having at LED light source allows transfer of data at a high speed, at mobile terminal, uses for example photodiode to process visible ray, carries out thus VLC.But in the prior art, due to the straightline propagation feature of light, for the optical communication user of mobile terminal, there is the region at the weak and dead angle of sight line in its photo-detector, be therefore difficult to guarantee reliable and time reality visible ray communication; When this external laying, the upper line light source of LED easily produces and disturbs or stimulate human eye.
Summary of the invention
In order to solve above-mentioned technical problem of the prior art, the object of the present invention is to provide a kind of mixed type communication system based on visible ray and radio frequency line.Mixed type communication system of the present invention has solved the problem at descending visible ray sight line and upper line light source visual angle, even if user terminal also can provide reliable and seamless Communications service under mobile condition effectively.
In order to solve the described technical problem of invention and to realize goal of the invention, the present invention has adopted following technical scheme:
Mixed type communication system based on visible ray and radio frequency line of the present invention, it utilizes visible ray and radio frequency line to realize the communication of the Internet and local area network (LAN) as carrier wave; It is characterized in that: described mixed type communication system comprises internet interface, router, LED lighting, visible ray receiving terminal, radio frequency line receiving terminal, radio frequency line transmitting terminal, and controller; When being used for switching down link, passes through by described controller visible ray receiving terminal or radio frequency line receiving terminal down-transmitting data.
Wherein, described controller receives successfully or failed response signal for receiving the designation data sending from described visible ray receiving terminal, if described controller receives the response signal that designation data takes defeat, excite described radio frequency line receiving terminal from described router down-transmitting data; If described controller receives designation data and receives successful response signal, close described radio frequency line receiving terminal and cut off it from described router down-transmitting data, and only utilize described visible ray receiving terminal to receive the visible light signal down-transmitting data that described LED lighting sends.
Wherein, described LED lighting is realized data down transmission and/or is met lighting demand for user.
Wherein, described LED lighting comprises modulator, visible ray driver and LED light source; Wherein said modulator is for being modulated into modulation signal by the baseband signal of the source coding and channel coding from described router transmission; Described visible ray driver is used for driving described LED light source to send visible ray, to the modulation signal of described modulator output is converted into visible light signal.
Wherein, described visible ray receiving terminal comprises photoelectric detector, analog to digital converter and demodulator; Described photoelectric detector is used for receiving visible light signal and is converted into the signal of telecommunication; Described analog to digital converter is sampled for the signal of telecommunication that described photoelectric detector is changed, and provides sampled data to demodulator; Described demodulator carries out demodulation for the sampled data that described analog to digital converter is provided.
As preferably, the general and condenser of described photoelectric detector group and optical filtering together use; And described photoelectric detector can be made up of PIN, APD, CCD and/or CMOS inductor.
Wherein, described radio frequency line transmitting terminal is for being uploaded to internet interface by data-signal.
Compared with immediate prior art, the mixed type communication system based on visible ray and radio frequency line of the present invention has following beneficial effect:
(1) the mixed type communication system based on visible ray and radio frequency line of the present invention expands to visible light spectrum radio frequency line communication, has improved communication channel bandwidth; For down link, mixed type communication system of the present invention can greatly improve message transmission rate.
(2) the electromagnetic wavelength of visible ray sending due to LED light source is shorter, has good anti-interference, communication security and Electro Magnetic Compatibility for the transmission of data.
(3) mixed type communication system of the present invention has solved the problem at descending visible ray sight line and upper line light source visual angle, even if user terminal also can provide reliable and seamless Communications service under mobile condition effectively.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the mixed type communication system based on visible ray and radio frequency line described in embodiment 1.
Embodiment
Below with reference to specific embodiment, the mixed type communication system frame structure based on visible ray and radio frequency line of the present invention is further elaborated, to help those skilled in the art to have more complete, accurate and deep understanding to inventive concept of the present invention, technical scheme.
Embodiment 1
As shown in Figure 1, the mixed type communication system based on visible ray and radio frequency line described in the present embodiment, it utilizes visible ray and radio frequency line to realize the communication of the Internet and local area network (LAN) as carrier wave; Described mixed type communication system comprises internet interface 10, router two 0, LED lighting 30, visible ray receiving terminal 40, radio frequency line receiving terminal 50, radio frequency line transmitting terminal 70 and controller 60; Described LED lighting is realized data down transmission and/or is met lighting demand for user; When being used for switching down link, passes through by described controller visible ray receiving terminal or radio frequency line receiving terminal down-transmitting data; Described radio frequency line transmitting terminal is for being uploaded to internet interface by data-signal.Described controller receives successfully or failed response signal for receiving the designation data sending from described visible ray receiving terminal, if described controller receives the response signal that designation data takes defeat, excite described radio frequency line receiving terminal from described router down-transmitting data; If described controller receives designation data and receives successful response signal, close described radio frequency line receiving terminal and cut off it from described router down-transmitting data, and only utilize described visible ray receiving terminal to receive the visible light signal down-transmitting data that described LED lighting sends.Described LED lighting comprises modulator, visible ray driver and LED light source; Wherein said modulator is for being modulated into modulation signal by the baseband signal of the source coding and channel coding from described router transmission; Described visible ray driver is used for driving described LED light source to send visible ray, to the modulation signal of described modulator output is converted into visible light signal.Described visible ray receiving terminal comprises photoelectric detector, analog to digital converter and demodulator; Described photoelectric detector is used for receiving visible light signal and is converted into the signal of telecommunication; Described analog to digital converter is sampled for the signal of telecommunication that described photoelectric detector is changed, and provides sampled data to demodulator; Described demodulator carries out demodulation for the sampled data that described analog to digital converter is provided.As preferably, the general and condenser of described photoelectric detector group and optical filtering together use; And described photoelectric detector can be made up of PIN, APD, CCD and/or CMOS inductor.
Current, visible ray communication system of the prior art can reach 10GBps.But the visible ray in this system or invisible light do not benefit human eye health, therefore should not use.In the mixed type communication system described in the present embodiment, use radio frequency line communication to ensure the fail safe of user side human eye.And the optical communication equipment using in down link is similarly normal daily life or work provides illumination.Therefore the method for hybrid wireless electricity communication has ensured safety, also provides illumination in high speed data transfers.Electricity communication frequently can be used for down link and upper wired link, has thoroughly ensured that user does not have the puzzlement of sight line problem.And, because the electromagnetic wavelength of visible ray that LED light source sends is shorter, for the transmission of data, there is good anti-interference, communication security and Electro Magnetic Compatibility, and for the subscriber equipment under mobile condition, such as mobile phone, PAD etc. also can provide reliable and seamless Communications service.
For the ordinary skill in the art; specific embodiment is just exemplarily described the present invention by reference to the accompanying drawings; obviously specific implementation of the present invention is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; or without improving, design of the present invention and technical scheme are directly applied to other occasion, all within protection scope of the present invention.
Claims (8)
1. the mixed type communication system based on visible ray and radio frequency line, it utilizes visible ray and radio frequency line to realize the communication of the Internet and local area network (LAN) as carrier wave; It is characterized in that: described mixed type communication system comprises internet interface, router, LED lighting, visible ray receiving terminal, radio frequency line receiving terminal, radio frequency line transmitting terminal, and controller; When being used for switching down link, passes through by described controller visible ray receiving terminal or radio frequency line receiving terminal down-transmitting data.
2. mixed type communication system according to claim 1, it is characterized in that: described controller receives successfully or failed response signal for receiving the designation data sending from described visible ray receiving terminal, if described controller receives the response signal that designation data takes defeat, excite described radio frequency line receiving terminal from described router down-transmitting data; If described controller receives designation data and receives successful response signal, close described radio frequency line receiving terminal and cut off it from described router down-transmitting data, and only utilize described visible ray receiving terminal to receive the visible light signal down-transmitting data that described LED lighting sends.
3. mixed type communication system according to claim 1 and 2, is characterized in that: described LED lighting is realized data down transmission and/or met lighting demand for user.
4. mixed type communication system according to claim 3, is characterized in that: described LED lighting comprises modulator, visible ray driver and LED light source; Wherein said modulator is for being modulated into modulation signal by the baseband signal of the source coding and channel coding from described router transmission; Described visible ray driver is used for driving described LED light source to send visible ray, to the modulation signal of described modulator output is converted into visible light signal.
5. mixed type communication system according to claim 3, is characterized in that: described visible ray receiving terminal comprises photoelectric detector, analog to digital converter and demodulator; Described photoelectric detector is used for receiving visible light signal and is converted into the signal of telecommunication; Described analog to digital converter is sampled for the signal of telecommunication that described photoelectric detector is changed, and provides sampled data to demodulator; Described demodulator carries out demodulation for the sampled data that described analog to digital converter is provided.
6. mixed type communication system according to claim 5, is characterized in that: the general and condenser of described photoelectric detector group and optical filtering together use.
7. mixed type communication system according to claim 5, is characterized in that: described photoelectric detector is made up of PIN, APD, CCD and/or CMOS inductor.
8. mixed type communication system according to claim 3, is characterized in that: described radio frequency line transmitting terminal is for being uploaded to internet interface by data-signal.
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| CN201410063498.6A CN103812560A (en) | 2014-02-25 | 2014-02-25 | Hybrid communication system based on visible lights and radio frequency |
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| CN105406916A (en) * | 2015-12-31 | 2016-03-16 | 中广核工程有限公司 | Communication terminal, visible light communication user external connection device and communication method thereof |
| CN105553553A (en) * | 2015-12-24 | 2016-05-04 | 南京邮电大学 | Network transmission scheme based on joint of VLC (Visible Light Communication) and WiFi |
| CN106027148A (en) * | 2016-05-20 | 2016-10-12 | 中国人民解放军信息工程大学 | Visible light communication system and method |
| CN113114359A (en) * | 2020-01-10 | 2021-07-13 | 大唐移动通信设备有限公司 | Communication method, network equipment and communication system |
| CN113259003A (en) * | 2020-02-12 | 2021-08-13 | 大唐移动通信设备有限公司 | Data transmission method, relay equipment and sensor node |
| CN114978305A (en) * | 2018-02-13 | 2022-08-30 | 瞻博网络公司 | Method and apparatus for consistency check in a decomposed DWDM system |
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| CN114978305A (en) * | 2018-02-13 | 2022-08-30 | 瞻博网络公司 | Method and apparatus for consistency check in a decomposed DWDM system |
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Application publication date: 20140521 |