CN106357330A - Wireless data downlink sending method and device - Google Patents
Wireless data downlink sending method and device Download PDFInfo
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- CN106357330A CN106357330A CN201510418705.XA CN201510418705A CN106357330A CN 106357330 A CN106357330 A CN 106357330A CN 201510418705 A CN201510418705 A CN 201510418705A CN 106357330 A CN106357330 A CN 106357330A
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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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Abstract
The invention discloses a wireless data downlink sending method and device. The method includes: judging whether a visible light communication channel is available or not; if yes, controlling a Wi-Fi communication channel and the visible light communication channel to parallelly perform downlink sending of data; if not, controlling the Wi-Fi communication channel to perform downlink sending of data. Compared with the prior art, the wireless data downlink sending method and device has the advantages that Wi-Fi communication and visible light communication are combined, and visible light communication is high in confidentiality, so that confidentiality of data transmission is improved; when the visible light communication channel is available, the Wi-Fi communication channel and the visible light communication channel are controlled to perform parallel downlink sending of data, so that channel and rate of data transmission are increased; when the visible light communication channel is not available, the Wi-Fi communication channel is controlled to perform downlink sending of data, so that stability of data transmission is guaranteed.
Description
Technical field
The invention belongs to wireless communication field, it is related to visible light communication (abbreviation vlc, English full name visible light
Communication, is also called light fidelity or li-fi) and wireless LAN communication mixed communication, particularly to one kind
Data downstream sending method and device.
Background technology
With the high speed development of the technology such as mobile terminal, network multimedia, Novel Internet application, people are to RFDC
Demand increase considerably, this brings huge challenge to wireless communication technology.Radio communication can be generally divided into interior and room
Outer two big class scenes, the data traffic of wherein about 70% radio communication occurs indoors.Currently, indoor radio communication system
System relies primarily on WLAN (abbreviation wlan, English full name wireless local area network) and mobile communication
System, and WLAN becomes the main load of indoor wireless communication due to possessing higher handling capacity and lower expenses standard
Body.
However, having the disadvantage that (1) confidentiality is low during wireless local area network technology is actually used indoors, data is trapped,
Network stolen and lead to data transfer risk larger；(2) increased the wireless radiation of interior, not environmentally.
And develop visible light communication faster in recent years, due to can organically combine with room lighting, possess environmental protection, secrecy
The advantages of property is good, is increasingly becoming important alternate ways of indoor wireless communication.Visible light communication is by for illumination
The flicker of light emitting diode (abbreviation led) carries out data transmission.Frequency due to flicker can be able to be felt far above human eye
The frequency obtaining, has undesirable effect thus without to human eye.Further, since telecommunication media is visible ray, there is not wireless spoke
The problem penetrated and be easy to carry out secrecy transmission.
However, the disadvantage of visible light communication is unstable: in order to carry out visible light communication, typically require tool between transceiver
Standby direct path, but this direct path in daily life easily by of short duration blocking so that visible light communication interrupts.Example
As when the LED lamp on ceiling transmits data to user terminal, if someone is from the side through being possible to obstruct the light
Direct path, so that data communication is interrupted.Therefore, rely on merely visible ray to carry out communication and cannot meet people to communication
The requirement of reliability.Another shortcoming of visible light communication be exactly transmitted in both directions to realize difficulty big.In uplink direction, by
Light source in user terminal is single and intensity of light is weak is unfavorable for data transfer, so how to allow the access point of visible light communication go to examine
The light that survey user terminal issues is then an extremely difficult problem.At present, the international standard of first visible light communication
Ieee802.15.7 (hereinafter referred to as 802.15.7 agreement) has been born.Because this standard is that be based on carrying out up-downgoing can
See that the premise of optic communication is designed, be therefore difficult to the house data transmission of reality.802.15.7 agreement uplink at present
Road is also using visible light communication, then user terminal also high-power LED to be installed, and guarantee access point ap receives terminal
The data sending；The light of uplink and downlink simultaneously irradiates simultaneously, and very big light source can be caused to pollute, and reduces the biography of visible light communication
Defeated speed, the therefore visible light communication difficulty in uplink is larger.And in downlink transmission direction it is seen that soft exchange point can lead to
The LED lamp crossing ceiling sends data to user terminal.This is easy realization: can pass through power line communication handle in transmitting terminal
Data transfer generates related optical signal to LED lamp；Only needing on user terminal to install a photodetector just can be from surrounding
Ceiling on obtain data.Led illuminating lamp on ceiling is generally more and luminous intensity is easy to greatly user's detection, therefore may be used
See that light feasibility in downlink transfer is high.
To sum up, how suitable to wireless LAN communication and visible light communication to be used in combination in indoor Radio Communication System, both may be used
Increase confidentiality can save resources, minimizing radiate to a greater extent again, become this area letter technical problem to be solved.
Content of the invention
For this reason, the technical problem to be solved is, provide one kind not only can increase confidentiality but also can save to a greater extent
Resource, the indoor Radio Communication System of minimizing radiation.
For solving above-mentioned technical problem, the invention provides a kind of wireless data downlink transmission method, comprising:
Judge whether visible light communication channel can use；
If described visible light communication channel can use, control and use wi-fi communication channel and described visible light communication channel parallel
Descending transmission data, if described visible light communication channel is unavailable, controls and uses wi-fi communication channel descending transmission data.
Further, controlling using the descending step sending data of wi-fi communication channel and described visible light communication channel parallel
Before, also include:
Judge whether the data transfer channel quality of eating dishes without rice or wine of described visible light communication channel reaches predetermined standard；
If not up to predetermined standard, the parameter of adjustment visible light communication module, make the data of described visible light communication channel
Transmit channel quality of eating dishes without rice or wine and reach described standard.
Further, control using the descending step bag sending data of wi-fi communication channel and described visible light communication channel parallel
Include:
The channel quality of reading wi-fi communication channel and visible light communication channel and communications status information；
Described wi-fi communication channel and the communication capacity of visible light communication channel are predicted according to described information；
Described wi-fi communication channel and visible light communication are distributed to according to the data cached queue that described communication capacity dispatches appropriate amount
Channel；
Control described wi-fi communication channel and visible light communication channel by the descending transmission parallel of described data queue.
Further, the data transfer of described wi-fi communication channel eats dishes without rice or wine at least two.
Accordingly, the invention provides a kind of wireless access point device, comprising:
Wi-fi communication module it is seen that optical communications module, and respectively with described wi-fi communication module and visible light communication module phase
Multichannel logical link control layer even；
Described multichannel logical link control layer, is used for:
Judge whether the visible light communication channel of described visible light communication module can use, if described visible light communication channel can use,
Then control wi-fi communication channel and the descending transmission data of described visible light communication channel parallel using described wi-fi communication module,
If described visible light communication channel is unavailable, controls and use the descending transmission data of described wi-fi communication channel.
Further, described equipment also includes device management unit；
Described multichannel logical link control layer is additionally operable to judge that the data transfer of described visible light communication channel channel quality of eating dishes without rice or wine is
No reach predetermined standard,
If not up to predetermined standard, control described device management unit to adjust the parameter of described visible light communication module, make institute
The data transfer channel quality of eating dishes without rice or wine stating visible light communication channel reaches described standard.
Further, described multichannel logical link control layer, is additionally operable to:
The channel quality of reading wi-fi communication channel and visible light communication channel and communications status information；
Described wi-fi communication channel and the communication capacity of visible light communication channel are predicted according to described information；
Data cached queue is dispatched according to described communication capacity and is distributed to described wi-fi communication channel and visible light communication channel；
Control described wi-fi communication channel and visible light communication channel by the descending transmission parallel of described data queue.
Further, the data transfer of described wi-fi communication channel eats dishes without rice or wine at least two.
Accordingly, present invention also offers a kind of interior fusion channel communication system, including user terminal and above-mentioned wirelessly connecing
Enter point device.
Accordingly, present invention also offers a kind of descending dispensing device of wireless data, comprising:
First judging unit, for judging whether visible light communication channel can use；
First control unit, if can use for described visible light communication channel, controls using wi-fi communication channel and described
Visible light communication channel parallel descending transmission data, and if described visible light communication channel is unavailable, then controls and use wi-fi
Communication channel descending transmission data.
Further, described device also includes the second judging unit, and the data transfer for judging described visible light communication unit is empty
Whether mouth channel quality reaches predetermined standard；And second control unit, if for not up to predetermined standard, adjusted
The parameter of visible light communication module, makes the data transfer of described visible light communication channel channel quality of eating dishes without rice or wine reach described standard.
Further, described device also includes:
Reading unit, for reading channel quality and the communications status of described wi-fi communication channel and described visible light communication channel
Information；
Predicting unit, for predicting the communication energy of described wi-fi communication channel and described visible light communication channel according to described information
Power；
Scheduling unit, is distributed to described wi-fi communication channel and visible for dispatching data cached queue according to described communication capacity
Optical communication channel；
3rd control unit, for controlling described wi-fi communication channel and described visible light communication channel by described data queue simultaneously
The descending transmission of row.
Further, the data transfer of described wi-fi communication channel eats dishes without rice or wine at least two.
Accordingly, present invention also offers a kind of interior fusion channel communication system, including user terminal and above-mentioned no line number
According to descending dispensing device.
The technique scheme of the present invention has the advantage that compared to existing technology
(1) during the descending transmission of wireless data, wi-fi communication is combined with visible light communication, due to visible light communication
Good confidentiality, increased the confidentiality of data transfer.Simultaneously as visible light communication make use of existing indoor light conduct
Data transmission medium, saves resource to a greater extent.Further, since visible light communication make use of existing indoor light conduct
Data transmission medium, decreases the radiation brought using wi-fi communication, environmental protection.
(2) when visible light communication channel can use, control using under wi-fi communication channel and described visible light communication channel parallel
Row sends data, increased channel and the speed of data transfer.
(3) when visible light communication channel is unavailable, control using the descending data that sends of wi-fi communication channel it is ensured that data
The stability of transmission.
Brief description
In order that present disclosure is more likely to be clearly understood, specific embodiment below according to the present invention simultaneously combines accompanying drawing,
The present invention is further detailed explanation, wherein
Fig. 1 is the flow chart of the wireless data downlink transmission method that the embodiment of the present invention one provides；
Fig. 2 is the flow chart of the wireless data downlink transmission method that the embodiment of the present invention two provides；
Fig. 3 is the flow chart of the wireless data downlink transmission method that the embodiment of the present invention three provides；
Fig. 4 is the frame diagram of the wireless access point device that the embodiment of the present invention four provides；
Fig. 5 is the frame diagram of the descending dispensing device of wireless data that the embodiment of the present invention five provides；
Fig. 6 is the frame diagram of the descending dispensing device of wireless data that the embodiment of the present invention six provides；
Fig. 7 is the frame diagram of the descending dispensing device of wireless data that the embodiment of the present invention seven provides；
Fig. 8 is the indoor fusion channel communication system frame diagram that the embodiment of the present invention eight provides；
Fig. 9 is the indoor fusion channel communication system frame diagram that the embodiment of the present invention nine provides.
Specific embodiment
Below with reference to accompanying drawing, using following examples, the present invention is further elaborated.
Refer to Fig. 1, the flow chart of the wireless data downlink transmission method providing for the embodiment of the present invention one, methods described includes:
Step s110, judges whether visible light communication channel can use.
Specifically, judge whether the light direct path between transmitting terminal and receiving terminal is unimpeded, if unimpeded, judgement is described can
See that optical communication channel can use；If subjected to barrier blocks, lead to light direct path not smooth, then judge that described visible ray leads to
Letter channel is unavailable.
Step s120, if described visible light communication channel can use, is controlled and is led to using wi-fi communication channel and described visible ray
Letter channel parallel descending transmission data.
Specifically, the data transfer of described wi-fi communication channel eats dishes without rice or wine at least two, and respectively 2.4g eats dishes without rice or wine to eat dishes without rice or wine with 5g.
The message capacity that 2.4g eats dishes without rice or wine is c1, and the message capacity that 5g eats dishes without rice or wine is c2, and the message capacity that vlc eats dishes without rice or wine is c3, then now
The message capacity c ≈ c1+c2+c3 of joint communication mode, when downlink data amount is larger, this scheme is due to having bigger data
Transfer rate and make downlink data transmitting efficiency higher.
In a preferred embodiment, because downlink communication is channel transmission, identical number may be sent in different channels
According to, after the multichannel link key-course of user terminal receives the data of repetition, delete repeat data, and by data according to
Sequence arranges.
Step s130, if described visible light communication channel is unavailable, controls and uses wi-fi communication channel descending transmission data.
Specifically, because now visible light communication channel is unavailable, so control using wi-fi communication channel descending transmission data,
And the data transfer of described wi-fi communication channel eats dishes without rice or wine at least two, respectively 2.4g eats dishes without rice or wine to eat dishes without rice or wine with 5g.2.4g eating dishes without rice or wine
Message capacity be c1, the message capacity that 5g eats dishes without rice or wine is c2, and message capacity now is c ≈ c1+c2.
The present embodiment has the advantage that
(1) during the descending transmission of wireless data, wi-fi communication is combined with visible light communication, due to visible light communication
Good confidentiality, increased the confidentiality of data transfer.Simultaneously as visible light communication make use of existing indoor light conduct
Data transmission medium, saves resource to a greater extent.Further, since visible light communication make use of existing indoor light conduct
Data transmission medium, decreases the radiation brought using wi-fi communication, environmental protection.
(2) when visible light communication channel can use, control using under wi-fi communication channel and described visible light communication channel parallel
Row sends data, increased channel and the speed of data transfer.
(3) when visible light communication channel is unavailable, control using the descending data that sends of wi-fi communication channel it is ensured that data
The stability of transmission.
Refer to Fig. 2, the flow chart of the wireless data downlink transmission method providing for the embodiment of the present invention two, methods described includes:
Step s210, judges whether visible light communication channel can use.
Specifically, identical with step s110 of embodiment one, here is omitted.
Step s211, if described visible light communication channel can use, judges that the data transfer of described visible light communication channel is eated dishes without rice or wine letter
Whether road quality reaches predetermined standard.
Specifically, the channel quality of eating dishes without rice or wine of the data transfer for visible light communication channel presets a standard, such as transmits speed
Rate standard, signal to noise ratio standard etc..
Step s212, if not up to predetermined standard, the parameter of adjustment visible light communication module, make described visible light communication
The data transfer of channel channel quality of eating dishes without rice or wine reaches described standard.
Specifically, if the data transfer of described visible light communication channel is eated dishes without rice or wine, channel quality is not up to predetermined standard, adjusts
The parameter of visible light communication module is the parameters such as the luminous intensity of led matrix in the present embodiment, color and Optical Clock speed, makes
The data transfer of described visible light communication channel channel quality of eating dishes without rice or wine reaches described standard.
Step s220, controls and uses wi-fi communication channel and the descending transmission data of described visible light communication channel parallel.
Specifically, identical with step s120 of embodiment one, here is omitted.
Step s230, if described visible light communication channel is unavailable, controls and uses wi-fi communication channel descending transmission data.
Specifically, identical with step s130 of embodiment one, here is omitted.
The present embodiment has the advantage that
(1) during the descending transmission of wireless data, wi-fi communication is combined with visible light communication, due to visible light communication
Good confidentiality, increased the confidentiality of data transfer.Simultaneously as visible light communication make use of existing indoor light conduct
Data transmission medium, saves resource to a greater extent.Further, since visible light communication make use of existing indoor light conduct
Data transmission medium, decreases the radiation brought using wi-fi communication, environmental protection.
(2) when visible light communication channel can use, control using under wi-fi communication channel and described visible light communication channel parallel
Row sends data, increased channel and the speed of data transfer.
(3) when visible light communication channel is unavailable, control using the descending data that sends of wi-fi communication channel it is ensured that data
The stability of transmission.
(4) anticipation and adjustment are carried out to visible light communication quality, further increase service efficiency and the reliability of visible light communication.
Refer to Fig. 3, the flow chart of the wireless data downlink transmission method providing for the embodiment of the present invention three, methods described includes:
Step s310, judges whether visible light communication channel can use.
Specifically, identical with step s110 of embodiment one, here is omitted.
Step s311, the channel quality of reading wi-fi communication channel and visible light communication channel and communications status information.
Specifically, read in upstream data feedback wi-fi communication channel and visible light communication channel eat dishes without rice or wine channel quality,
Communications status information, such as channel quality preferably, typically, difference Three Estate, communications status be unimpeded, general, congestion three
Grade.
Step s312, predicts described wi-fi communication channel and the communication capacity of visible light communication channel according to described information.
Specifically, the communication capacity grade of its channel is predicted according to described information.Such as this grade be divided into by force, relatively strong, weaker,
Weak four grades.If described channel quality is good, communications status are unimpeded, predict that its communication capacity is strong；If bad channel quality,
Communications status are congestion, then its communication capacity of anticipation is weak；Remaining state can belong to relatively strong, weaker grade according to emphasis difference:
As stressed channel quality, then will be stronger for unimpeded or general to general for channel quality, the communications status communication capacity that is all predicted as, will believe
Road is of poor quality, and it is weaker that what communications status were unimpeded or general is all predicted as communication capacity；As stressed communications status, then by communications status
Communication capacity that what typically, channel quality was good or general be all predicted as is stronger, will be good or general to communications status congestion, channel quality
All it is predicted as communication capacity weaker.
Step s313, according to described communication capacity dispatch appropriate amount data cached queue be distributed to described wi-fi communication channel and
Visible light communication channel.
Specifically, the communication capacity grade according to anticipation, scheduling appropriate amount data cached to corresponding channel.Usually, root
Strong, relatively strong, weaker, the weak buffer data size dispatched respectively according to communication capacity grade gradually decreases, and is fitted with communicating with ability
Should.
Step s314, controls described wi-fi communication channel and visible light communication channel by the descending transmission parallel of described data queue.
Specifically, identical with step s120 of embodiment one, here is omitted.
Step s330, if described visible light communication channel is unavailable, controls and uses wi-fi communication channel descending transmission data.
Specifically, identical with step s130 of embodiment one, here is omitted.
The present embodiment has the advantage that
(1) during the descending transmission of wireless data, wi-fi communication is combined with visible light communication, due to visible light communication
Good confidentiality, increased the confidentiality of data transfer.Simultaneously as visible light communication make use of existing indoor light conduct
Data transmission medium, saves resource to a greater extent.Further, since visible light communication make use of existing indoor light conduct
Data transmission medium, decreases the radiation brought using wi-fi communication, environmental protection.
(2) when visible light communication channel can use, control using under wi-fi communication channel and described visible light communication channel parallel
Row sends data, increased channel and the speed of data transfer.
(3) when visible light communication channel is unavailable, control using the descending data that sends of wi-fi communication channel it is ensured that data
The stability of transmission.
(4) channel quality according to each channel and communications status predict its communication capacity, suitable for different communication capacity scheduling
The data transfer task of equivalent, more effectively uses each communication channel, makes the in hgher efficiency of data transfer.
Accordingly, present invention also offers a kind of wireless access point device, refer to Fig. 4, provide for the embodiment of the present invention four
The frame diagram of wireless access point device.As shown in figure 4, the wireless access point device 1 of the embodiment of the present invention, comprising:
Wi-fi communication module 11 is led to it is seen that optical communications module 12, and respectively with described wi-fi communication module 11 and visible ray
The multichannel logical link control layer 13 that letter module 12 is connected.
Described multichannel logical link control layer 13, is used for: whether judges the visible light communication channel of described visible light communication module
Available, if described visible light communication channel can use, control using described wi-fi communication module wi-fi communication channel and
The descending transmission data of described visible light communication channel parallel, if described visible light communication channel is unavailable, controls using described
Wi-fi communication channel descending transmission data.
Specifically, wi-fi communication module 11 includes at least two data transfers and eats dishes without rice or wine, and one is 2.4g, and another is 5g,
It is respectively adopted 802.11ac agreement to be communicated with 802.11n agreement.Described visible light communication module 12 includes at least one and eats dishes without rice or wine,
Using 802.15.7 protocol communication.If the message capacity that 2.4g eats dishes without rice or wine is c1, the message capacity that 5g eats dishes without rice or wine is c2, and vlc is empty
Mouthful message capacity be c3, then the message capacity c ≈ c1+c2+c3 of now joint communication mode, when downlink data amount is larger,
This scheme makes downlink data transmitting efficiency higher due to having bigger message transmission rate.
Described wi-fi communication module includes connected physical layer and mac layer；Described visible light communication module includes connected physics
Layer and mac layer；The mac layer of described multichannel logical link control layer and described wi-fi communication module and described visible ray
The mac layer of communication module is respectively connected with.Described multichannel logical link control layer adopt fpga (field programmable gate array,
English full name is field-programmable gate array), general processor or mcu programming realize.
Preferably, in another embodiment, described wireless access point device also includes device management unit 14, in this embodiment,
Described multichannel logical link control layer is additionally operable to judge whether the data transfer of described visible light communication channel channel quality of eating dishes without rice or wine reaches
To predetermined standard, if not up to predetermined standard, described device management unit 14 is controlled to adjust described visible light communication module
12 parameter, makes the data transfer of described visible light communication channel channel quality of eating dishes without rice or wine reach described standard.
Specifically, described multichannel logical link control layer adopts fpga (field programmable gate array, English full name is
Field-programmable gate array), general processor or mcu programming realize.Described predetermined standard is for can
See that the data transfer of optical communication channel is eated dishes without rice or wine a channel quality standard set in advance, such as transfer rate standard, signal to noise ratio mark
Standard etc..The parameter of described visible light communication module 12 is luminous intensity, color and the Optical Clock of led matrix in the present embodiment
The parameters such as speed.
Preferably, in another embodiment, described multichannel logical link control layer, is additionally operable to: reads wi-fi communication channel
Channel quality and communications status information with visible light communication channel；Described wi-fi communication channel and can be predicted according to described information
See the communication capacity of optical communication channel；Data cached queue is dispatched according to described communication capacity and is distributed to described wi-fi communication channel
With visible light communication channel；Control described wi-fi communication channel and visible light communication channel by described data queue descending parallel
Send.
Specifically, described multichannel logical link control layer adopts fpga (field programmable gate array, English full name is
Field-programmable gate array), general processor or mcu programming realize.
Build indoor fusion channel communication system using wireless access point device of the present invention, have the advantage that
(1) during the descending transmission of wireless data, wi-fi communication is combined with visible light communication, due to visible light communication
Good confidentiality, increased the confidentiality of data transfer.Simultaneously as visible light communication make use of existing indoor light conduct
Data transmission medium, saves resource to a greater extent.Further, since visible light communication make use of existing indoor light conduct
Data transmission medium, decreases the radiation brought using wi-fi communication, environmental protection.
(2) when visible light communication channel can use, control using under wi-fi communication channel and described visible light communication channel parallel
Row sends data, increased channel and the speed of data transfer.
(3) when visible light communication channel is unavailable, control using the descending data that sends of wi-fi communication channel it is ensured that data
The stability of transmission.
(4) anticipation and adjustment are carried out to visible light communication quality, further increase service efficiency and the reliability of visible light communication.
(5) channel quality according to each channel and communications status predict its communication capacity, suitable for different communication capacity scheduling
The data transfer task of equivalent, more effectively uses each communication channel, makes the in hgher efficiency of data transfer.
Present invention also offers a kind of descending dispensing device of wireless data, below will be illustrated with three embodiments.
Refer to Fig. 5, be the frame diagram of the descending dispensing device of wireless data that the embodiment of the present invention five provides.Described wireless data
Descending dispensing device includes the first judging unit 110 and the first control unit 120.
Described first judging unit 110, for judging whether visible light communication channel can use.
Specifically, judge whether the light direct path between transmitting terminal and receiving terminal is unimpeded, if unimpeded, judgement is described can
See that optical communication channel can use；If subjected to barrier blocks, lead to light direct path not smooth, then judge that described visible ray leads to
Letter channel is unavailable.
Described first control unit 120, if can use for described visible light communication channel, controlling and using wi-fi communication channel
The descending transmission data with described visible light communication channel parallel, and if described visible light communication channel is unavailable, then controlling makes
With wi-fi communication channel descending transmission data.
Specifically, the data transfer of described wi-fi communication channel eats dishes without rice or wine at least two, and respectively 2.4g eats dishes without rice or wine to eat dishes without rice or wine with 5g.
The message capacity that 2.4g eats dishes without rice or wine is c1, and the message capacity that 5g eats dishes without rice or wine is c2, and the message capacity that vlc eats dishes without rice or wine is c3.If institute
State visible light communication channel can use, then the message capacity c ≈ c1+c2+c3 of now joint communication mode, larger in downlink data amount
When, this scheme makes downlink data transmitting efficiency higher due to having bigger message transmission rate.If described visible ray leads to
Letter channel is unavailable, then control and use wi-fi communication channel descending transmission data, and message capacity now is c ≈ c1+c2.
The present embodiment has the advantage that
(1) during the descending transmission of wireless data, wi-fi communication is combined with visible light communication, due to visible light communication
Good confidentiality, increased the confidentiality of data transfer.Simultaneously as visible light communication make use of existing indoor light conduct
Data transmission medium, saves resource to a greater extent.Further, since visible light communication make use of existing indoor light conduct
Data transmission medium, decreases the radiation brought using wi-fi communication, environmental protection.
(2) when visible light communication channel can use, control using under wi-fi communication channel and described visible light communication channel parallel
Row sends data, increased channel and the speed of data transfer.
(3) when visible light communication channel is unavailable, control using the descending data that sends of wi-fi communication channel it is ensured that data
The stability of transmission.
Refer to Fig. 6, be the frame diagram of the descending dispensing device of wireless data that the embodiment of the present invention six provides.Described wireless data
It is single that descending dispensing device includes the first judging unit 210, the first control unit 220, the second judging unit 211 and the second control
Unit 212.
Described first judging unit 210, for judging whether visible light communication channel can use.
Specifically, identical with the first judging unit 110 in embodiment one, here is omitted.
First control unit 220, if can use for described visible light communication channel, controlling and using wi-fi communication channel and institute
State visible light communication channel parallel descending transmission data, and if described visible light communication channel is unavailable, then controls and use
Wi-fi communication channel descending transmission data.
Specifically, identical with the first control unit 120 in embodiment one, here is omitted.
Described second judging unit 211, whether the channel quality of eating dishes without rice or wine of the data transfer for judging described visible light communication unit reaches
To predetermined standard.
Specifically, the channel quality of eating dishes without rice or wine of the data transfer for visible light communication channel presets a standard, such as transmits speed
Rate standard, signal to noise ratio standard etc..
Described second control unit 212, if for not up to predetermined standard, adjusting the parameter of visible light communication module,
The data transfer channel quality of eating dishes without rice or wine of described visible light communication channel is made to reach described standard.
Specifically, if the data transfer of described visible light communication channel is eated dishes without rice or wine, channel quality is not up to predetermined standard, adjusts
The parameter of visible light communication module is the parameters such as the luminous intensity of led matrix in the present embodiment, color and Optical Clock speed, makes
The data transfer of described visible light communication channel channel quality of eating dishes without rice or wine reaches described standard.
The present embodiment has the advantage that
(1)) during the descending transmission of wireless data, wi-fi communication is combined with visible light communication, because visible ray leads to
The good confidentiality of letter, increased the confidentiality of data transfer.Simultaneously as visible light communication make use of existing indoor light to make
For data transmission medium, save resource to a greater extent.Further, since visible light communication make use of existing indoor light to make
For data transmission medium, decrease the radiation brought using wi-fi communication, environmental protection.
(2) when visible light communication channel can use, control using under wi-fi communication channel and described visible light communication channel parallel
Row sends data, increased channel and the speed of data transfer.
(3) when visible light communication channel is unavailable, control using the descending data that sends of wi-fi communication channel it is ensured that data
The stability of transmission.
(4) anticipation and adjustment are carried out to visible light communication quality, further increase service efficiency and the reliability of visible light communication.
Refer to Fig. 7, be the frame diagram of the descending dispensing device of wireless data that the embodiment of the present invention seven provides.Described wireless data
Descending dispensing device includes the first judging unit 310, the first control unit 320, reading unit 311, predicting unit 312, adjusts
Degree unit 313 and the 3rd control unit 314.
Described first judging unit 310, for judging whether visible light communication channel can use.
Specifically, identical with the first judging unit 110 in embodiment one, here is omitted.
First control unit 320, if can use for described visible light communication channel, controlling and using wi-fi communication channel and institute
State visible light communication channel parallel descending transmission data, and if described visible light communication channel is unavailable, then controls and use
Wi-fi communication channel descending transmission data.
Specifically, identical with the first control unit 120 in embodiment one, here is omitted.
Described reading unit 311, for reading the channel quality of described wi-fi communication channel and described visible light communication channel and leading to
Letter status information.
Specifically, read the channel quality that the wi-fi communication channel of feedback and visible light communication channel in upstream data eat dishes without rice or wine, logical
Letter status information, such as channel quality preferably, typically, difference Three Estate, communications status are unimpeded, general, congestion three etc.
Level.
Described predicting unit 312, for predicting described wi-fi communication channel and described visible light communication channel according to described information
Communication capacity.
Specifically, the communication capacity grade of its channel is predicted according to described information.Such as this grade be divided into by force, relatively strong, weaker,
Weak four grades.If described channel quality is good, communications status are unimpeded, predict that its communication capacity is strong；If bad channel quality,
Communications status are congestion, then its communication capacity of anticipation is weak；Remaining state can belong to relatively strong, weaker grade according to emphasis difference:
As stressed channel quality, then will be stronger for unimpeded or general to general for channel quality, the communications status communication capacity that is all predicted as, will believe
Road is of poor quality, and it is weaker that what communications status were unimpeded or general is all predicted as communication capacity；As stressed communications status, then by communications status
Communication capacity that what typically, channel quality was good or general be all predicted as is stronger, will be good or general to communications status congestion, channel quality
All it is predicted as communication capacity weaker.
Described scheduling unit 313, is distributed to described wi-fi communication channel for dispatching data cached queue according to described communication capacity
With visible light communication channel.
Specifically, the communication capacity grade according to anticipation, scheduling appropriate amount data cached to corresponding channel.Usually, root
Strong, relatively strong, weaker, the weak buffer data size dispatched respectively according to communication capacity grade gradually decreases, and is fitted with communicating with ability
Should.
Described 3rd control unit 314, for controlling described wi-fi communication channel and described visible light communication channel by described data
The descending transmission of queue in parallel.
Specifically, the data transfer of described wi-fi communication channel eats dishes without rice or wine at least two, and respectively 2.4g eats dishes without rice or wine to eat dishes without rice or wine with 5g.2.4g
The message capacity eated dishes without rice or wine is c1, and the message capacity that 5g eats dishes without rice or wine is c2, and the message capacity that vlc eats dishes without rice or wine is c3.Now joint communication
The message capacity c ≈ c1+c2+c3 of mode, when downlink data amount is larger, this scheme is due to having bigger message transmission rate
And make downlink data transmitting efficiency higher.
The present embodiment has the advantage that
(1) during the descending transmission of wireless data, wi-fi communication is combined with visible light communication, due to visible light communication
Good confidentiality, increased the confidentiality of data transfer.Simultaneously as visible light communication make use of existing indoor light conduct
Data transmission medium, saves resource to a greater extent.Further, since visible light communication make use of existing indoor light conduct
Data transmission medium, decreases the radiation brought using wi-fi communication, environmental protection.
(2) when visible light communication channel can use, control using under wi-fi communication channel and described visible light communication channel parallel
Row sends data, increased channel and the speed of data transfer.
(3) when visible light communication channel is unavailable, control using the descending data that sends of wi-fi communication channel it is ensured that data
The stability of transmission.
(4) channel quality according to each channel and communications status predict its communication capacity, suitable for different communication capacity scheduling
The data transfer task of equivalent, more effectively uses each communication channel, makes the in hgher efficiency of data transfer.
Accordingly, present invention also offers a kind of user terminal and wireless access point device described in above-described embodiment four of including
Indoor fusion channel communication system.Refer to Fig. 8, the indoor fusion channel communication system that Fig. 8 provides for the embodiment of the present invention eight
Frame diagram.Described system includes wireless access point device 1 and user terminal 2.
Specifically, described wireless access point device 1 is identical with the wireless access point device 1 described in above-described embodiment four, herein not
Repeat again.
Described user terminal 2 include multichannel logical link control layer, upper layer application and with described radio reception device 1
The communications portion that wi-fi communication module 11 and visible light communication module 12 are communicated, for receiving described radio reception device 1
The data of descending transmission.
Accordingly, present invention also offers a kind of include user terminal and the wireless data described in above-described embodiment five, six, seven
The indoor fusion channel communication system of descending dispensing device.Refer to Fig. 9, the interior that Fig. 9 provides for the embodiment of the present invention nine is melted
Close channel communication system frame diagram.Described system includes the descending dispensing device of wireless data 1 and user terminal 2.
Specifically, the descending dispensing device of described wireless data 1 and descending of wireless data described in above-described embodiment five, six, seven
Send device identical, here is omitted.
Described user terminal 2 dispensing device 1 descending with described wireless data is connected, and receives the descending dispensing device of described wireless data
The data of 1 descending transmission.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.For institute
For the those of ordinary skill in genus field, can also make other changes in different forms on the basis of the above description.
There is no need to be exhaustive to all of embodiment.And the obvious change thus extended out or variation are still located
Among the protection domain of the invention.
Claims (14)
1. a kind of wireless data downlink transmission method is it is characterised in that include:
Judge whether visible light communication channel can use；
If described visible light communication channel can use, control and led to using wi-fi communication channel and described visible ray
Letter channel parallel descending transmission data,
If described visible light communication channel is unavailable, controls and use wi-fi communication channel descending transmission data.
2. method according to claim 1 it is characterised in that controlling using wi-fi communication channel and
Before the step of described visible light communication channel parallel descending transmission data, also include:
Judge whether the data transfer channel quality of eating dishes without rice or wine of described visible light communication channel reaches predetermined standard；
If not up to predetermined standard, the parameter of adjustment visible light communication module, so that described visible ray is led to
The data transfer channel quality of eating dishes without rice or wine of letter channel reaches described standard.
3. method according to claim 1 uses wi-fi communication channel and institute it is characterised in that controlling
State the descending step sending data of visible light communication channel parallel to include:
The channel quality of reading wi-fi communication channel and visible light communication channel and communications status information；
Described wi-fi communication channel and the communication capacity of visible light communication channel are predicted according to described information；
According to described communication capacity dispatch appropriate amount data cached queue be distributed to described wi-fi communication channel and
Visible light communication channel；
Control described wi-fi communication channel and visible light communication channel by the descending transmission parallel of described data queue.
4. method according to claim 1 it is characterised in that: the data of described wi-fi communication channel passes
Defeated eat dishes without rice or wine at least two.
5. a kind of wireless access point device is it is characterised in that include:
Wi-fi communication module it is seen that optical communications module, and respectively with described wi-fi communication module and visible
The multichannel logical link control layer that optical communications module is connected；
Described multichannel logical link control layer, is used for:
Judge whether the visible light communication channel of described visible light communication module can use, if described visible ray leads to
Letter channel can use, then control wi-fi communication channel and described visible light communication using described wi-fi communication module
Channel parallel descending transmission data, if described visible light communication channel is unavailable, controls and uses described wi-fi
Communication channel descending transmission data.
6. equipment according to claim 5 is it is characterised in that also include device management unit；
Described multichannel logical link control layer is additionally operable to judge that the data transfer of described visible light communication channel is empty
Whether mouth channel quality reaches predetermined standard,
If not up to predetermined standard, described device management unit is controlled to adjust described visible light communication module
Parameter, make the data transfer of described visible light communication channel channel quality of eating dishes without rice or wine reach described standard.
7. equipment according to claim 5 is it is characterised in that described multichannel logic link control
Layer, is additionally operable to:
The channel quality of reading wi-fi communication channel and visible light communication channel and communications status information；
Described wi-fi communication channel and the communication capacity of visible light communication channel are predicted according to described information；
Described wi-fi communication channel is distributed to according to the data cached queue of scheduling of described communication capacity and visible ray leads to
Letter channel；
Control described wi-fi communication channel and visible light communication channel by the descending transmission parallel of described data queue.
8. equipment according to claim 5 it is characterised in that: the data of described wi-fi communication channel passes
Defeated eat dishes without rice or wine at least two.
9. a kind of interior fusion channel communication system it is characterised in that: including user terminal and right will
Seek the arbitrary described wireless access point device of 5-8.
10. a kind of descending dispensing device of wireless data is it is characterised in that include:
First judging unit, for judging whether visible light communication channel can use；
First control unit, if can use for described visible light communication channel, being controlled and being communicated using wi-fi
Channel and the descending transmission data of described visible light communication channel parallel, and if described visible light communication channel
Unavailable, then control and use wi-fi communication channel descending transmission data.
11. devices according to claim 10, it is characterised in that also including the second judging unit, are used
Whether reach predetermined standard in the data transfer judging described visible light communication unit channel quality of eating dishes without rice or wine；With
And
Second control unit, if for not up to predetermined standard, adjust the ginseng of visible light communication module
Number, makes the data transfer of described visible light communication channel channel quality of eating dishes without rice or wine reach described standard.
12. devices according to claim 10 are it is characterised in that also include:
Reading unit, for reading the channel quality of described wi-fi communication channel and described visible light communication channel
With communications status information；
Predicting unit, for predicting described wi-fi communication channel and described visible light communication letter according to described information
The communication capacity in road；
Scheduling unit, is distributed to described wi-fi communication for dispatching data cached queue according to described communication capacity
Channel and visible light communication channel；
3rd control unit, for controlling the described wi-fi communication channel and described visible light communication channel will be described
Data queue's descending transmission parallel.
13. devices according to claim 10 it is characterised in that: the data of described wi-fi communication channel
Transmission eats dishes without rice or wine at least two.
A kind of 14. interior fusion channel communication systems it is characterised in that: including user terminal and right will
Seek the descending dispensing device of the arbitrary described wireless data of 10-13.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510418705.XA CN106357330A (en) | 2015-07-16 | 2015-07-16 | Wireless data downlink sending method and device |
| PCT/CN2015/086356 WO2017008361A1 (en) | 2015-07-16 | 2015-08-07 | Wireless data downlink transmission method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510418705.XA CN106357330A (en) | 2015-07-16 | 2015-07-16 | Wireless data downlink sending method and device |
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| WO (1) | WO2017008361A1 (en) |
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